WO2016006966A1 - Cut product producing method and producing system - Google Patents

Abstract

The present invention relates to a cut product producing method and a cut product producing system. Provided is the cut product producing method comprising: an area yield calculating step of calculating the number of strips and the width of the strip enabling an area yield to be a predetermined value or higher when a raw sheet is cut; and a cutting step of obtaining the plurality of strips by slitting the raw sheet in the longitudinal direction according to the number of strips and the width of the strip, which are calculated in the area yield calculating step.

Description

Production method and production system of foundation products

The present invention relates to a method and a production system for cutting products.

This application is subject to Korean Patent Application No. 10-2014-0087413 filed on July 11, 2014, and Korean Patent Application No. 10-2014-0092627 filed on July 22, 2014, and Korean Patent Application No. 10-2015 filed on July 10, 2015. Claiming the benefit of priority based on -0098146, all contents disclosed in the documents of the relevant Korean patent application are incorporated as part of this specification.

Generally, the product on the film (or sheet) is made in the form of a fabric of size larger than the size of the product to be actually used. For example, optical members, such as a polarizing plate, retardation plate, etc. used for a display apparatus etc. are like this. For example, the polarizer supplier (manufacturer) is a fabric having a length and width larger than the actual product used in manufacturing the polarizer in consideration of various factors such as the efficiency of the manufacturing process and fluctuations in demand for the product. Manufacture.

In addition, in most cases, the fabric is manufactured in a band shape through a continuous process, and the fabric is fabricated and stored in a roll. Thereafter, the fabric wound on the roll is taken out and cut into unit products of a predetermined size.

In general, in cutting the fabric, a method of cutting so that a plurality of unit products can be obtained at the same time in one cutting process is used a lot. For example, a cutting frame equipped with a plurality of cutters is used. In this case, the yield of the cut unit product varies depending on how the cutting is performed. Low cutting efficiency increases the amount of scrap that is discarded after cutting, ie waste, which ultimately increases the manufacturing cost of the product.

Also, depending on the type of fabric, there may be undesirable defects in the product. In this case, defects are considered for the quality (quality) of the fabric when cutting. Generally, a fault is formed in a manufacturing process of a raw material, a winding process, etc.

For example, the polarizing plate used for display apparatuses, such as a TV, is manufactured through the process of (1) obtaining a polarizer, (2) laminating a polarizer protective layer, and (3) laminating a protective film or a release film. do. In the process of obtaining a polarizer, a polyvinyl alcohol (PVA) film is mainly dyed and stretched and a polarizer is obtained. In the process of laminating the polarizer protective layer, a triacetyl cellulose (TAC) film is attached to both surfaces of the polarizer through an adhesive to laminate the polarizer protective layer. At this time, the polarizing plate may be wound on a roll in the process of proceeding each process, at least the product having the above (3) process is wound on the roll and stored. Thus, when winding up to a roll, handling property etc. are advantageous in the ease of storage, cutting process, etc. as well as the transportability to each process.

The defect of the original fabric is mainly generated in the stretching or winding process. For example, in the stretching process, both ends of the fabric are fixed to the stretching apparatus, where defects may occur in the fixing portion. In the case of a winding process, a fault may arise in the edge part fixed to a roll. In addition, in the case of the winding process, when scratches are present on the roll, periodic defects may occur at the site of contact with the roll due to the characteristics of the rotating roll. If defects are found in the cut unit product, the loss of the product is high.

Accordingly, in cutting the fabric having a defect, a defect inspection is made prior to cutting, and the cutting is avoided so as not to include the defect in the cut unit product. In addition, the yield of the unit product cut as described above is considered.

In general, the cutting of the fabric, during the inspection process for inspecting the location (distribution) of the defect, the yield calculation process for calculating the yield of the unit product when the virtual cutting based on the inspected defect information, the yield calculation process On the basis of the calculated value, it is progressing through a cutting process for cutting to have a yield higher than a predetermined value (highest yield).

For example, the Republic of Korea Patent Publication No. 10-2008-0033863, Republic of Korea Patent No. 10-1179071, Republic of Korea Patent No. 10-1315102, etc. discloses a technology related to the above.

When cutting the fabric as described above to avoid the defects, but in consideration of the best yield. In this case, the yield is an area yield, which is calculated by dividing the total area of the unit product obtained after cutting by the total area of the fabric before cutting, and is usually expressed as a percentage (%).

However, the cutting method according to the prior art, for example, the following problems are pointed out.

Recently, most fabrics have been manufactured in very large widths. This also considers factors such as the efficiency of the fabric manufacturing process and fluctuations in demand for products. For a fabric having such a large width, slitting cutting to cut in the longitudinal direction of the fabric may be required. However, the cutting method according to the prior art is limited to the cutting of the unit product for the maximum area yield, the slitting cutting is not considered. Therefore, it is difficult to see the method considering the maximum cutting efficiency.

On the other hand, the business purpose of a product supplier (manufacturer) can be viewed as revenue. However, the cutting method according to the prior art does not consider the profit. Specifically, the cutting method according to the prior art is simply cutting in consideration of only the area yield of the unit product in order to minimize the amount of scrap (waste) discarded. However, there is a problem in that profitability is lower in some cases.

An object of the present invention is to provide a method for producing a cut product and a production system for cut products that can maximize the area yield of the fabric.

In addition, an object of the present invention is to provide a method for producing a cutting product and a system for producing a cutting product that can cut a fabric based on at least one of area yield and profitability.

In addition, the present invention is to solve the problem to provide a production method and a production system of the cutting product that can calculate a highly profitable cutting method.

In order to solve the above problems, according to an aspect of the present invention, when cutting the fabric, the area yield calculation step of calculating the number of strips and the width of the strip so that the area yield is a predetermined value or more; And a cutting step of slitting and cutting the fabric in the longitudinal direction by the number of strips and the width of the strip calculated in the area yield step to obtain a plurality of strips.

In addition, according to another aspect of the invention, the area yield calculation step of calculating the area yield of the fabric is changed according to the cutting method of the fabric; A profit calculation step of calculating a profit of a product that changes according to the cutting method of the fabric; And a cutting step of cutting the fabric with a cutting method based on at least one of the calculated area yield and the calculated profit of the product.

In addition, according to another aspect of the present invention, when cutting the fabric, the area yield calculation unit for calculating the number of strips and the width of the strip so that the area yield is more than a predetermined value of the strip calculated by the area yield calculation unit A production system for cutting products is provided that includes a cut that slits and cuts the fabric in a lengthwise direction in number and width of strips to obtain a plurality of strips.

As described above, according to the present invention, it is possible to provide an improved method for producing a cutting product and a production system for cutting products.

In addition, the slitting cutting can be performed by calculating the number of strips and the width of the strips that can maximize the area yield.

In addition, the profitability of the product supplier (manufacturer) can be improved.

1 is a plan view showing a fabric.

2 is a plan view for explaining a cutting method of the original fabric according to an embodiment of the present invention.

3 to 5 are plan views illustrating a cutting method of a fabric according to another embodiment of the present invention.

It is a top view for demonstrating the manufacturing method of the cut product which concerns on embodiment of this invention.

It is a top view for demonstrating the manufacturing method of the cut product which concerns on other embodiment of this invention.

8 to 10 are plan views for explaining a method for producing a cut product according to another embodiment of the present invention.

Figure 11 is a block diagram showing a production system for cutting products according to an embodiment of the present invention.

It is a block diagram which shows the production system of the cutting product which concerns on other embodiment of this invention.

Hereinafter, a method of manufacturing a cut product and a production system of a cut product according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In addition, irrespective of the reference numerals, the same or corresponding components will be given the same or similar reference numerals, and redundant description thereof will be omitted. For convenience of description, the size and shape of each component member may be exaggerated or reduced. Can be.

In this document, the "fabric" to be cut is a base material on a film (or sheet), which is included here as long as it has a relatively larger size than before cutting. In addition, in this document, the kind and laminated structure of the original fabric 10 are not specifically limited. The fabric 10 may be selected from, for example, an optical member, a protective member, or the like on a film (or sheet) applied to an electric or electronic product. The far end 10 may be selected from, for example, an optical member applied to a display device such as a TV or a monitor. In addition, the fabric 10 includes a monolayer and / or a laminate.

In one example, the far end 10 may be selected from a polarizer. In this case, the polarizing plate may have a laminated structure including a polarizer and a polarizer protective layer formed on the polarizer. The polarizer may be selected from, for example, dyed and stretched polyvinyl alcohol (PVA) films and the like. The polarizer protective layer may be selected from, for example, a triacetyl cellulose (TAC) film and the like, and may be attached to both surfaces of the polarizer through an adhesive. In addition, the polarizing plate may have a laminated structure further including a protective film and / or a release film formed on the polarizer protective layer.

The fabric 10 may be taken out in a state of being wound on a roll, for example, in a strip shape. The width X and the length Y of the fabric 10 are not limited. The fabric 10 may have, for example, a width X of 40 mm to 2,500 mm and a length Y of 1,000 cm to 3,000 m.

In addition, in this document, the fabric 10 to be cut includes those in which defects (d, defects) exist and / or defects (d) do not exist. Defect (d) is an undesirable defect as a product, which may be formed in the manufacturing process and / or winding process of the fabric (10). The drawbacks include, for example, foreign matter, contamination, torsion, scratches and / or bubbles.

In the accompanying drawings, "*" indicates a defect d. In the fabric 10, one or two or more kinds of the above-described defects (d) may be present. However, the fabric 10 is represented by "*" without considering the kind of the defects (d).

On the other hand, in this document, "foundation" may be used to mean one or more selected from "slitting foundation" and "unit cutting". In addition, in this document, the "slitting cutting" means cutting the fabric 10 in the length (Y) direction to cut the strip-shaped semi-finished product, the "unit cutting" is the length of the fabric 10 It means cutting to the unit product by cutting in the (Y) direction and the width (X) direction. At this time, in this document, the strip-shaped semifinished product obtained through the slitting cutting is referred to as 'strip', and the cutting product obtained through the unit cutting is referred to as 'single item'.

In addition, the single piece is a single piece of final product having a length and width smaller than that of the fabric 10, which may have, for example, a rectangular shape. Also, referring to Figure 2, in this document, the strips 11, 12, 13 are strip-shaped semi-finished products having a width smaller than that of the fabric 10, which can be cut into single pieces through unit cutting. have. For reference, FIG. 2 illustrates a state in which the fabric 10 is slitted and cut into the first strip 11, the second strip 12, and the third strip 13.

In addition, in this document, the cutting method is not particularly limited. The cutting method may be any one capable of dividing the original fabric 10 into at least one piece of article and / or strips 11, 12, 13. Cutting may be carried out, for example, through a metal knife, a jet water knife and / or a light source, and the like, for example, a laser beam or the like.

On the other hand, in this document, "area yield" means calculated by dividing the total area of the cut product obtained after cutting by the total area of the fabric 10 before cutting. Area yield can be expressed as a percentage, as usual. The cut product is then selected from a single piece and / or strip 11, 12, 13. The total area of the foundation product is calculated as the area of one foundation product x the number of foundation products produced.

In this document, “size” means one or more selected from the width, length, area, and diagonal length of the fabric 10 or the cut product (single and / or strip). In this document, "size" is used in the same sense as above, unless specifically stated otherwise in the following embodiments. Further, “inch” representing length may mean diagonal length, as is well known. Inch may refer to a diagonal length when the product is a rectangular unit such as a polarizing plate or the like.

In describing the embodiments of the present invention, detailed descriptions of related well-known general functions or configurations are omitted. In the embodiments illustrated below, the same terms and reference numerals denote the same functions. In addition, since the part described in one embodiment is applicable to another embodiment, description of the overlapping part as much as possible is abbreviate | omitted. For example, when the part described in the first embodiment is not described in the second embodiment, the second embodiment includes the part described in the first embodiment. In addition, if there is a part which is not described in 1st Embodiment, the part described in 2nd Embodiment is included.

The method for producing a cut product according to an embodiment of the present invention includes an area yield calculation step of calculating the number of strips and the width of the strips so that the area yield becomes a predetermined value or more when cutting the fabric. In addition, the production method of the cutting product includes a cutting step of slitting the fabric in the longitudinal direction by the number of strips and the width of the strip calculated in the area yield step to obtain a plurality of strips.

In addition, the area yield step may be performed by calculating the number of strips and the width of the strips such that the S value according to the following general formula (1) has a minimum value.

[Formula 1]

In Formula 1, X is the width of the fabric, n is the number of strips, W is the width of each strip. Further, the S value may be calculated while changing at least one of the number of strips and the width of the strips. In addition, the width of the strip may be set equal to the width or length of the unit product produced in each strip.

The cutting step may further comprise arranging the position of each strip based on the defect distribution of the far end.

In addition, the area yield may be selected according to various criteria such as 80% or more or 90% or more or 95% or more, for example. In addition, the area yield calculation step may be performed by calculating the number of strips and the width of the strips, respectively, which maximize the area yield.

Hereinafter, with reference to the accompanying drawings will be described in detail a production method of the cut product.

1 and 2, one fabric 10 is shown. The original fabric 10 has a band shape and is wound on a roll, for example. The fabric 10 may have a large width X. The fabric 10 may have a long width X of, for example, 1,000 mm or more, specifically 1,200 mm to 2,500 mm. The length Y of the fabric 10 is not limited, but may have, for example, a length Y of 1,000 cm to 3,000 m. However, the width X and the length Y of the fabric 10 are not limited to the above range. The fabric 10 shown in FIGS. 1 and 2 is an unfolded shape, which shows a part of the total length Y. FIG.

For the fabric 10 having a long width (X) as described above it may be advantageous in the process to proceed the slitting cutting and unit cutting sequentially than the case of proceeding only the unit cutting. That is, a plurality of strips 11 and 12 having a width W of a size smaller than the width X of the fabric 10 by slitting the fabric 10 in the length (Y) direction prior to the unit cutting. It is good to divide into (13). Thereafter, each strip 11, 12, 13 is cut into a single piece through a unit cutting. Further, after each of the divided strips 11, 12, 13 is wound on a roll, it can be cut into pieces separately at the request of the consumer. At this time, the width W of each strip 11, 12, 13 may be equal to or greater than the size (width and / or length) of the final product, i.e.

In the fabric 10, the area S1 that can be commercialized can be represented, for example, by the following general formula (5).

[Formula 5]

S1 = (X-Z) Y

In Formula 5, X is the total width of the fabric 10, Y is the length of the fabric 10, Z is the width (loss) during the cutting.

In slitting the original fabric 10, the area yield can be maximized if the value S1 of the general formula (5) can be made to the maximum {Max [(X-Z) Y]}. At this time, according to the present embodiment, as a factor capable of maximizing the area yield, a combination of the number of slitting strings and the product size (width) is considered.

Specifically, the fabric cutting method of the present invention calculates the number of strips 11, 12, 13 and the widths of the strips 11, 12, 13 that maximize the area yield according to the first embodiment. An area yield calculation step; And a plurality of strips 11 by slitting the fabric 10 by the number of strips 11, 12, 13 and the widths of the strips 11, 12, 13 calculated in the area yield calculation step. (12) (13) to obtain a cutting step. In this case, the widths of the strips 11, 12 and 13 may be the same as the size (width and / or length) of a single product produced from each strip 11, 12 and 13.

In addition, the fabric cutting method of the present invention, the area yield calculation step of selecting a cutting method in which the S value according to the following general formula (1) shows a minimum value; And a cutting step of slitting the fabric in the longitudinal direction according to the selected cutting method to obtain a plurality of strips.

[Formula 1]

In Formula 1, X is the width of the fabric 10, n is the number of strips 11, 12, 13, W is the width of each strip (11) 12 (13). In formula (1), n is an integer of 2 or more, and the maximum value of n is not limited. n may be arbitrarily assumed, for example, or may be arbitrarily determined according to the type of product (or fabric) and / or the request of the consumer, etc., which may be 2 to 50, or 2 to 20 in one example.

In the area yield calculation step, the S value of the general formula 1 may be calculated by changing the number of strips 11, 12, 13 and / or the width of the strips 11, 12, 13. At this time, the width of the strips 11, 12, 13 is, as described above, the width of the strips 11, 12, 13 is a unit produced from each of the strips 11, 12, 13 It may be equal to the size (width and / or length) of. Calculate the number of strips 11, 12, 13 and the width of the strips 11, 12, 13 to minimize the S value according to the general formula 1, Cutting can maximize the area yield. For the purpose of explanation, the following assumptions are made and illustrated.

For the fabric 10 shown in FIG. 1, it is assumed, for example, that the slitting is cut into five strips having different widths. Specifically, assume that the fabric 10 is slitting and cut into five strip products, A product, B product, C product, D product and E product. In addition, it is assumed that the width of each strip is A product> B product> C product> D product> E product. In addition, the width of each strip may be equal to the size (width and / or length) of the piece produced from the strip.

Various combinations are possible in slitting the fabric 10 into five strips. The number of cases of all possible combinations can be represented by the following general formula (6).

[Formula 6]

S2 = X-(W _A N _A + W _B N _B + W _C N _C + W _D N _D + W _E N _E )

Table 1 below illustrates some of all possible combinations. In addition, in Table 1 below, the area yield for each case is shown as an example. In the "Foundation form" item of the following [Table 1], "A x 1 + B x 2" means a case where a line A product and two lines B product, the rest is the same. As assumed in Table 1 below, in all combinations, the best area yield can be obtained when cutting into one row of A product and two rows of B product (case 1).

<Result of Area Yield Calculation by Foundation Method>

division	Foundation method	Area yield (%)	ranking
case 1	A x 1 + B x 2	96	One
case 2	A x 2 + D x 2	94	2
case 3	A x 1 + B x 1 + C x 1	92	3
case 4	A x 1 + E x 2	90	4
case 5	A x 1 + B x 1 + D x 1	89	5
case 6	A x 1 + C x 2	97	6
case 7	A x 1 + C x 1 + D x 1	86	7
case 8	A x 1 + B x 1 + E x 1	84	8

The cutting form (case 1) having the highest area yield may be calculated through the general formula (6). Therefore, in cutting the fabric 10, based on the result calculated through the general formula (6), when cutting in the form of a minimum S2 value, it is possible to have the maximum area yield in the number of all cases.

Figure 2 shows the optimal cutting shape as above. In FIG. 2, W _A is the width of A product and W _B is the width of B product. That is, FIG. 2 is a cutting form for maximizing the area yield when cutting slitting in the length (Y) direction with respect to the fabric 10 having the total width X and the total length Y according to the result calculated through the general formula (6) As in (case 1), this shows cutting to 1 line of product A and 2 lines of product B.

In addition, the general formula 6 as described above may be represented by the general formula (1). In this case, the general formula 1 may be applied at the time of cutting to any n products in the width of each strip 11, 12, 13 is the same or different. In Formula 1, X is the width of the fabric 10, which may be predetermined.

Therefore, by calculating the cutting shape to minimize the S value according to the general formula (1) it is possible to maximize the area yield. Specifically, the S value of the general formula (1) is calculated while varying the number of strips (11) (12) 13 and / or the number of strips (11) (12) 13. Among the calculated S values, the maximum area yield may be obtained by cutting the number of strips 11, 12 and 13 and / or the number of strips 11 and 12 to minimize the S value. .

Hereinafter, the embodiment which can maximize the quality (quantization) of the high quality is considered in consideration of the fault d of the fabric 10a.

As illustrated above, it is assumed that the cutting shape for maximizing the area yield with respect to the fabric 10 is one line of A product and two lines of B product. At this time, if the defect (d) is present in the fabric 10, in consideration of the distribution (position) of the defect (d) for quantification is cut. Specifically, when the cutting method (cutting form) for maximizing the area yield is determined according to the above method, the cutting method is cut in the cutting form, but the positions of the strips 11, 12, 13 according to the defect (d) distribution. Arrange and then cut to obtain the best area yield and yield.

Referring to Figures 3 to 5, the production rate may vary depending on where the first line A product and the second line B product. In the present invention, "quantization rate" means the area yield in consideration of quantification.

As shown in Figures 3 to 5, since the distribution of defects (d) may be different for each line, one line of A product and two lines of B product are cut and set to have the highest yield ratio. More specifically, in the present embodiment, when the cutting shape for maximizing the area yield is determined as described above, the strips 11, 12, 13 are considered in consideration of the area yield (quantization rate) according to the defect (d) distribution. Trim by arranging the position of. Thereby, the highest yield can be achieved with the highest area yield.

3 to 5 illustrate assuming a quantitative rate according to the arrangement of one line A product and two lines B product. 3 to 5, the optimum cutting shape may be the arrangement of FIG. 3. That is, when the cutting is arranged in the order of one line of A product, one line of B product and one line of B product from the left side, the best area yield and yield ratio can be obtained.

In addition, the defect d may be inspected by an inspector or a defect inspection apparatus before cutting. In the present invention, the inspection method of the defect (d), the data of the defect information, the utilization thereof, and the like are not particularly limited, and this can be performed by, for example, a conventional method.

As mentioned above, in order to minimize the amount of scrap discarded, the area yield of the unit product obtained after cutting may be considered. However, a high yield does not necessarily mean a high profit. For example, product area and price are not necessarily proportional.

For example, when cutting into "Product A" having an area of "A" for a certain fabric, "Product 2A" having an area yield of 95% and having twice the area of the "Product A" for the same fabric. In the case of cutting, the yield is assumed to be 93%. In this case, when the price of the "product A" is 1 won, the price of the "product 2A" is not necessarily 2 won, in most cases is more expensive than 2 won. In this case, it is advantageous in profitability for the product supplier to cut and sell to the size of "Product 2A" rather than "Product A". That is, in order to select a cutting method (method), it may be desirable to consider both area yield and profitability.

According to another embodiment of the present invention, a method of manufacturing a cutting product includes calculating an area yield calculation step of calculating an area yield of a fabric changing according to a cutting method of a fabric, and calculating a profit of a product changing according to a cutting method of a fabric. Revenue calculation step. In addition, the production method of the cut product includes a method of producing a cut product comprising a cutting step of cutting the fabric in a cutting method based on at least one of the calculated area yield and the calculated product revenue.

Here, in the cutting step, even if the area yield calculated by the first cutting method is lower than the area yield by the second cutting method, the profit of the product calculated by the first cutting method is higher than the profit of the product calculated by the second cutting method. If large, it can be carried out by cutting the fabric with the first cutting method.

In addition, the cutting step may be performed by cutting the fabric in a cutting method in which the profit of the product calculated in the profit calculation step indicates the maximum value.

In addition, the product to be cut may be a single piece obtained by cutting the fabric in the longitudinal direction and the width direction, respectively, or a strip-shaped strip obtained by cutting the fabric in the longitudinal direction.

In addition, the profit of the product can be calculated through the following general formula (2).

[Formula 2]

In Formula 2, n is the number of products to be cut, P is the price of each product to be cut.

Alternatively, the revenue calculation step may be performed based on the following general formula (3). In addition, the cutting step may include the steps of slitting and cutting the fabric in the longitudinal direction to obtain a plurality of strips and cutting the plurality of cut strips in the width direction according to a cutting method in which the value of M represents a maximum value to obtain a single piece. It may include.

 [Formula 3]

In Formula 3, n is the number of strips, T is the number of units produced in each strip, and P is the price of the units produced in each strip. The M value can also be calculated while varying the width of the strip and / or the number of strips. In addition, the width of the strip may be set equal to the width or length of the unit. In addition, the step of obtaining a plurality of strips may further comprise arranging the position of each strip in accordance with the defect distribution of the far-end.

Meanwhile, the revenue calculation step may be performed based on the following general formula (4).

[Formula 4]

Where m is the number of fabrics, n is the number of strips produced in each fabric, T is the number of units produced in each strip, and P is the price of the unit produced in each strip.

Here, the cutting step, the fabric selection step of selecting the fabric according to the cutting method in which the value of R represents the maximum value; Slitting the selected fabric in the longitudinal direction to obtain a plurality of strips, and each of the obtained plurality of strips in the width direction to obtain a single unit.

Also, the R value can be calculated while varying the width of the strip and / or the number of strips. In addition, the width of the strip may be set equal to the width or length of the unit. In addition, the step of obtaining a plurality of strips may further comprise arranging the position of each strip in accordance with the defect distribution of the far-end.

On the other hand, the area yield calculation step may be performed by calculating the number of strips and the width of the strip so that the area yield is more than a predetermined value, the area yield calculation step may be performed in the same manner as described with reference to FIGS. Can be.

According to the first embodiment, a method for producing a cut product for improving profitability includes: a profit calculating step of calculating a profit of a product that changes according to a cutting method of the fabric 10; And a cutting step of cutting the fabric 10 in a cutting method in which the profit of the product calculated in the profit calculation step indicates a maximum value.

In the revenue calculation step, when cutting the fabric 10, it is possible to calculate the profit of the product that changes according to the cutting method. In the present invention, "profit of a product that changes according to the cutting method" may mean, for example, a profit that may vary depending on the selection of the cutting product and / or the selection of the fabric 10. The selection of the cutting product may include, for example, selection of the size and / or number of products to be cut (produced by the foundation), and the selection of the fabric 10 may include, for example, roll selection. In general, considering that the fabric 10 is wound and stored in a roll, the roll selection may include the size of the fabric 10, the number of fabrics 10, the quality of the fabric 10, and / or the fabric 10. It may be selected in consideration of the stock removal period (or production date). Also, in the present invention, the profit calculation may calculate the profit of the product based on the price (sale price) for the product to be cut.

In one example, the revenue of the product can be calculated through the following general formula (2).

[Formula 2]

In Formula 2, n is the number of products to be cut, P is the price of each product to be cut.

Further, in the revenue calculation step, for example, when the fabric 10 is cut into n products (n ≥ 2), it can be obtained from the fabric 10 on the basis of the price for each of the n products to be cut. To calculate the total return. Here, the "n products" are two or more products, and may be products having the same size or different products. Further, in the " n products ", n may vary depending on the size of the fabric 10 and / or the size of each product produced from the fabric 10, so the upper limit of n is not limited. Although not specifically limited, n may be 5 million or less, or 1 million or less, for example. In addition, the product in the "n products" may be selected from the single piece 10a and / or the strips 11, 12, 13, as mentioned above.

Hereinafter, with reference to FIG. 6, the embodiments of the present embodiment will be described by taking the case where the original fabric 10 is cut into a plurality of single products 10a as an example. Specifically, the present embodiment exemplifies a case where a plurality of single products 10a are obtained by unit cutting in the width X direction and the length Y direction of the original fabric 10.

6, one fabric 10 is shown.

Assume that a single piece 10a having a different size (area or inch) with respect to the fabric 10 is, for example, a case of A product, B product, or C product. In addition, it is assumed that the size of each unit 10a is A product <B product <C product. In addition, the price of each unit 10a is different.

For the fabric 10, the area yield for each product can be calculated. For example, the area yield may be calculated by dividing the total area of the cut piece 10a by cutting the total area of the fabric 10 before cutting, when virtually cutting as usual. As a result of calculating the area yield for each product in this manner, it is assumed that the area yield is as shown in the following [Table 2], for example. That is, as shown in the following [Table 2], A product has the highest area yield as the yield of 96% at the time of cutting, the specific ranking of each product (A product (area yield 96%), B product ( Area yield 93%) and C product (area yield 89%).

<Result of Area Yield Calculation According to Foundation Type>

division	Single unit x number	Area yield (%)	ranking
case 1	A x 30	96	One
case 2	B x 25	93	2
case 3	C x 12	89	3

In cutting the fabric 10, considering the area yield, the case of cutting to the smallest size A product as described above (case 1) may be optimal. However, if you consider revenue, the ranking may vary. Specifically, if the profit is calculated in consideration of the price (sale price) for each product after the foundation, for example, it can show the results as shown in Table 3 below.

<Profitability calculation result by foundation type>

division	Single unit x number	Revenue (Unit: KRW 10,000)	ranking
case 1	A x 30	1842	2
case 2	B x 25	1968	One
case 3	C x 12	1820	3

Considering revenue as above, the ranking will be different. That is, as shown in Table 3 above, considering the profit, the case of cutting to a medium size B product (case 2) is optimal. This is because, as mentioned earlier, the size (area or inch) of the product and the price are not necessarily proportional.

In this embodiment, it cuts in consideration of the above profits by each product (size). Specifically, in the present embodiment, when the original fabric 10 is cut virtually, the profit according to the size of the product to be cut is calculated. For example, when the fabric 10 is virtually cut into any n products, the profit for each product is calculated based on the price for each of the n products to be cut. Here, the n products are products having different sizes (areas or inches), which may be arbitrarily assumed, or may be arbitrarily determined according to the type of the product (or fabric) and / or the request of the consumer. In the examples shown in Tables 2 and 3 above, n products are 30 for the A product.

For example, polarizers vary in price (sale price) depending on size (area or inch). In addition, when a polarizing plate has twice the size (area or inch), a price exceeds 2 times. For example, in the case of polarizers having sizes of 55 inches, 47 inches, and 42 inches, the price (sale price) is different for each inch, and the 55-inch polarizer may be, for example, more than twice the price of the 42-inch polarizer. Based on this price (sale price), a profit for each product is calculated.

In this embodiment, the revenue may mean a value obtained by subtracting the production cost of the product from the price of the product obtained after cutting. In addition, the price is a price at the time of cutting, which may be a selling price when supplying the product to be cut to the consumer. In addition, the production cost may mean a cost including at least the manufacturing cost of the fabric (10). The production cost may further include, for example, a cutting cost (estimated cost) required in the cutting process to the manufacturing cost of the fabric 10. The revenue may be calculated through, for example, the following Formula 7 or 8.

[Formula 7]

Revenue = P x N-Q

[Formula 8]

Revenue = P x N-(Q + R)

In Formulas 7 and 8, P represents the price (sale price) of one cut product, N represents the number of cutting products produced by the cutting, Q represents the manufacturing cost (manufacturing cost) of the fabric, R is Represents cutting costs incurred in the cutting process.

In addition, the revenue may be calculated, for example, through a profit calculator. In this case, the profit calculator may input price information according to the size of each product and a manufacturing cost (manufacturing cost) of the fabric 10. In some cases, the profit calculator may further input the cutting costs incurred in the cutting process.

As described above, after calculating the profit for each product, it is cut into the product (size) having the highest profit from the calculated profit. For example, among the A, B, and C products shown in Table 3 above, the product is cut into the B product (medium size) having the highest profit. Accordingly, it can meet the business purpose of the product supplier (manufacturer) for the purpose of profitability.

On the other hand, if the defect (d) is present in the fabric 10, to avoid the defect (d) for the quality (quality) of quality cut. Specifically, when the product (size) for maximizing the profit is determined according to the above method, the fabric 10 is cut to the product (size) of the maximum profitability, but cut to avoid the defect (d). For example, in Table 3, product B showed the highest profit. Thus, the fabric 10 is cut into B products, but cut to avoid defects (d), to achieve the best profitability and mass production.

In addition, the defect d may be inspected by an inspector or a defect inspection apparatus before cutting. In the present embodiment, the inspection method of the defect (d), the data formation of the defect information, the utilization thereof, and the like are not particularly limited, and these can be performed by, for example, a conventional method.

In addition, in cutting the original fabric 10 into the single piece 10a, it can cut at a predetermined inclination angle, for example. Figure 6 shows such a cutting form. Specifically, as shown in FIG. 6, the cutting frame F may be cut into a plurality of pieces 10a, and may be cut to have a length (Y) direction and a predetermined inclination angle of the fabric 10. For example, the length direction of the unit 10a may have an acute angle of 45 degrees with the length Y direction of the fabric 10.

In the said 1st Embodiment, the case where the original fabric 10 is cut | disconnected by the some single piece 10a was demonstrated as an example. In this embodiment, the case where the original fabric 10 is cut | disconnected by several strip 11, 12, 13 is demonstrated as an example. Specifically, the present embodiment exemplifies a case where the original fabric 10 is cut in the length (Y) direction to obtain a strip-shaped strip 11, 12, 13. Moreover, in this embodiment, the method which can maximize the area yield is also provided.

2 and 7 illustrate two cases in which the cutting shape is different. 2 is a cutting form to maximize the area yield, Figure 7 illustrates a cutting form to maximize the profitability.

2 and 7, in the present embodiment, the fabric 10 may have a band shape, but may have a wide long width X.

For the fabric 10 having a long width (X) as described above it may be advantageous in the process to proceed the slitting cutting and unit cutting sequentially than the case of proceeding only the unit cutting. That is, a plurality of strips 11 and 12 having a width W of a size smaller than the width X of the fabric 10 by slitting the fabric 10 in the length (Y) direction prior to the unit cutting. It is good to divide into (13). Thereafter, each strip 11, 12, 13 is cut into a single piece 10a through a unit cut. Further, after each of the divided strips 11, 12, 13 is wound on a roll, it can be cut into pieces 10a at the request of the consumer. In this case, the width W of each strip 11, 12, 13 may be equal to or greater than the size (width and / or length) of the final product, ie, the unit 10a.

According to the second embodiment, a profit calculation step of selecting a cutting method in which the M value of the following general formula (3) shows the maximum value; A first cutting step of slitting the fabric 10 in the longitudinal direction according to the selected cutting method to obtain a plurality of strips 11, 12, 13; And a second cutting step of cutting the plurality of strips 11, 12 and 13 obtained in the width direction to obtain a single product 10a.

[Formula 3]

In Equation 3, n is the number of strips 11, 12, 13, T is the number of pieces 10a produced in each strip, and P is the price of the pieces 10a produced in each strip. to be.

According to this embodiment, it is possible to implement the cutting form having the highest profitability through the general formula (3). To illustrate this, the following is illustrated.

In the fabric 10 shown in FIGS. 2 and 7, the area that can be commercialized can be represented, for example, by the general formula (5) described above.

In slitting the original fabric 10, the area yield can be maximized if the value S1 of the general formula (5) can be made to the maximum {Max [(X-Z) Y]}. At this time, according to the present embodiment, as a factor capable of maximizing the area yield, a combination of the number of slittings (number of lines) and the size of the unit 10a is considered. More specifically, according to one embodiment of the invention, the number of strips 11, 12, 13 (number of lines produced after slitting cutting) and the strips 11, 12, 13 are When it is specified what size single piece 10a is comprised, the area yield can be maximized. For the purpose of explanation, the following assumptions are made and illustrated.

With respect to the fabric 10 shown in Fig. 2, it is assumed that the slitting cut to A product, B product, C product, D product and E product. In addition, it is assumed that the width of each strip is A product> B product> C product> D product> E product. And each strip has a different price. In this case, the price of each strip may be calculated as the price (sale price) of the unit 10a produced from the strip, in which case the width of each strip is the size (width and // of the unit 10a produced from the strip). Or length).

In slitting the fabric 10, various combinations are possible.

As discussed above, Table 1 illustrates some of all possible combinations. In addition, Table 1 shows by way of example the area yield for each case. In addition, as assumed in Table 1, in all combinations, the best area yield can be obtained when cutting into one row of A product and two rows of B product (case 1).

The cutting form (case 1) having the best area yield can be easily calculated through the general formula (1). Therefore, in cutting the fabric 10, if the cutting based on the result calculated by the general formula (1), it is possible to have the maximum area yield in the number of all cases.

Figure 2 shows the optimal cutting shape as above. In FIG. 2, W _A is the width of A product, W _B is the width of B product, and Z is the width to be lost. That is, FIG. 2 is a cutting shape for maximizing the area yield when cutting slitting in the length (Y) direction with respect to the fabric 10 having a total width X and a total length Y according to the result calculated through the general formula (1) As in (case 1), this shows cutting to 1 line of product A and 2 lines of product B.

When considering the area yield as described above, it may be optimal to cut with one line of A product and two lines of B product (case 1). However, if you consider revenue, the ranking may vary. Specifically, when the profit is calculated in consideration of the price (sale price) for each product, [Table 1] can show the result as shown in [Table 4], for example.

<Profitability calculation result by foundation type>

division	Foundation form	Revenue (Unit: KRW 10,000)	ranking
case 1	A x 1 + B x 2	2163	3
case 2	A x 2 + D x 1	2265	One
case 3	A x 1 + B x 1 + C x 1	2255	2
case 4	A x 2 + E x 1	2132	4
case 5	A x 1 + B x 1 + D x 1	2150	5
case 6	A x 1 + C x 2	2117	6
case 7	A x 1 + C x 1 + D x 1	2059	7
case 8	A x 1 + B x 1 + E x 1	2037	8

Considering revenue as above, the ranking will be different. In other words, considering profit, it is optimal to cut with 2 lines of A product and 1 line of D product (case 2). And the highest case yield in the area yield (case 1) may be ranked third.

Figure 7 shows the cutting form as described above. In Figure 7, W _A is the width of A product and W _D is the width of D product. That is, Figure 3 is a form of cutting to maximize the profitability, when cutting the slitting in the longitudinal direction with respect to the fabric 10 having a full width X and full length Y, the case of cutting with two lines of A product and one line of D product It is seen. Therefore, it is good to cut in the form of cutting of Figure 7 in consideration of the profit.

Equation 3 may be applied at the time of cutting into any n strips in which the widths of each strip 11, 12, 13 are the same or different from each other. In Formula 3, P representing the price of the unit 10a may be obtained through product price information at the time of cutting. In addition, n is an arbitrary value and may be determined depending on the width of the fabric 10 and the width of the strips 11, 12, 13. In addition, T representing the number of production of the unit 10a can also be predetermined. For example, in the case of a polarizing plate, since the width and length are standardized in inches, when the widths of the strips 11, 12, 13 are determined, T is determined according to the standard, in which case the strips 11, 12 The width of 13) is the same as the size (width and / or length) of the unit 10a.

Therefore, it is possible to maximize the profitability by calculating the cutting shape to maximize the M value according to the general formula (3). Specifically, M value of the general formula 3 is calculated while changing the width of the strip and / or the number of strips. Among the calculated M values, cutting the width of the strips 11, 12, 13 and / or the number of strips 11, 12, 13 to maximize the M value may have the highest profitability. .

In the second embodiment, the case where one fabric 10 is cut into a plurality of strips 11, 12, 13 has been described as an example. In general, the fabric 10 is wound on a roll and stored in a clean room. In addition, the plurality of fabrics 10 having different sizes, qualities, and removal periods (or production dates) are stored in the clean room. This embodiment exemplifies the slitting cutting method that has the highest profitability for the plurality of fabrics 10 as described above.

According to a third embodiment, a production method of a cut product of the present invention comprises: a profit calculation step of selecting a cutting method in which an R value of the following general formula (4) represents a maximum value; A fabric selection step of selecting the fabric 10 according to the selected cutting method from a plurality of fabrics 10; Slitting and cutting the selected fabric (10) in the longitudinal direction to obtain a plurality of strips (11) (12) (13); And cutting the plurality of strips (11) (12) (13) obtained in the width direction to obtain a single product (10a).

[Formula 4]

In Formula 4, m is the number of fabrics 10 (m ≥ 2), n is the number of strips 11, 12, 13 produced in each fabric 10 (n ≥ 2), T is the number of units 10a produced in each strip 11, 12, 13, and P is the price of the units 10a produced in each strip 11, 12, 13.

Specifically, first, a cutting method for maximizing the R value of the general formula (4) is selected. Selection of the cutting method is as described in the above first and second embodiments. In one example, based on the size of each fabric 10, the fabric 10 that maximizes the R value of the general formula (4) is selected.

For example, suppose there are three fabrics (fabric R1, fabric R2 and fabric R3) and produce A, B, C, D, and E products for these fabrics. For each fabric R1 to R3, the R value is calculated while varying the width of the strip and / or the number of strips. At this time, for example, in the case of maximizing the R value of the general formula (3), the fabric R1 is a strip of two products A and one B strip, the fabric R2 is a strip of one C product and four strips of D product , If the fabric R3 is three strips of B products and two strips of E products, one of the fabrics R1 to R3 is selected in consideration of the production schedule. If the selected fabric is fabric R1, fabric R1 is cut into two strips of A product and one strip of B product. Fabric 2 may then be selected and cut into one strip of C and four strips of D.

As mentioned above, in general, since the fabric 10 is wound on a roll, the selection of the fabric 10 in this embodiment may mean a roll selection.

In this embodiment, the case where the defect (d) is considered and the quality (quality) can be maximized is demonstrated. According to the present embodiment, in the cutting process, the fabric is slit cut to the calculated number of strips, and the cutting is performed by arranging the positions of the strips according to the defect distribution.

As in the second embodiment, it is assumed that the cutting shapes for maximizing profitability with respect to the fabric 10 of FIG. 7 are two lines of A product and one line of D product. At this time, when the defect (d) is present in the fabric 10, the distribution (position) of the defect (d) may be considered for the quality.

8 to 10, the quantization rate may vary depending on where two lines of product A and one line of product D are located. In the present invention, "quantization rate" means the area yield in consideration of quantification.

As shown in Figures 8 to 10, since the distribution of defects (d) may be different for each row, two rows of A product and one row of D product are cut and set to have the highest yield ratio. More specifically, in the present embodiment, when the cutting shape for maximizing profitability is determined as in the second embodiment, each strip 11 and 12 is considered in consideration of the area yield (quantization rate) according to the defect (d) distribution. Arrange and cut the position of (13). As a result, it is possible to achieve the highest yield rate with the highest profitability. It is also in the form of cutting to maximize profitability, the calculated number of strips 11, 12, 13 is a plurality of at least two (two lines) or more, and the plurality (number of lines) is different in width from each other. It may be useful in the case of including two or more kinds of strips 11, 12, 13. 8 to 10 illustrate this case.

8 to 10 illustrate the quantization rate according to the arrangement of two lines of A product and one line of D product. 8 to 10, the optimal cutting shape may be the arrangement of FIG. 8. In other words, if the product is arranged in the order of one line of A product, one line of A product, and one line of D product from the left side, the highest profitability / quantization rate can be obtained.

Referring to FIGS. 11 and 12, the production system for cutting products includes an area yield calculation unit 210 and the area for calculating the number of strips and the width of the strips so that the area yield becomes a predetermined value or more when cutting the fabric. It may include a cutting unit 300 to obtain a plurality of strips by slitting the fabric in the longitudinal direction by the number of strips and the width of the strip calculated by the yield calculation unit 210.

In addition, the production system of the cutting product is a profit calculation unit for calculating the revenue according to the product, based on the product information input unit 110 and the product-specific price input to the product information input unit 110 is input the price for each product to be cut And may further include 220.

Referring to FIG. 6, the production system for cutting products may include a far-end information input unit 120.

Product information is input to the product information input unit 110 and stored. At this time, the information of the product includes the size of each product. For example, when the fabric 10 is cut into any n products, sizes of the n products to be cut are input to the product information input unit 110. Here, n products (n ≧ 2) are as described above. For example, as the product to be cut, when there are five strip products having different sizes (areas or inches), the product information input unit 110 stores and stores sizes for each of the five strip products.

The fabric information input unit 120 is input to the fabric information for the fabric (10). The fabric information input unit 120 includes, as fabric information, for example, a production cost of the fabric 10, a price of the fabric 10, and / or an up date (and / or a production date, etc.) of the fabric 10. Can be stored. In this case, the production cost, as mentioned above includes at least the manufacturing cost of the fabric (10). Specifically, at least the fabrication cost of the fabric 10 may be input and stored in the fabric information input unit 120. In some cases, the cutting information input unit 120 may be input to the cutting cost expected to be generated in the cutting of the fabric (10). The fabric information input unit 120 may input, for example, the fabric size of the fabric 10 as fabric information. In detail, at least one selected from the width X and the length Y of the fabric 10 may be input to the fabric information input unit 120. In addition, the stock information input unit 120 may be additionally inputted the date and the production date of the fabric 10 and / or the like.

The area yield calculator 210 calculates the number of strips 11, 12, 13 and the widths of the strips 11, 12, 13 to maximize the area yield when the fabric 10 is virtually cut. Calculate. In one example, the area yield calculator 210 calculates the number of strips and the width of the strips maximizing the area yield based on the information of the product information input unit 110 and / or the far end information input unit 120. . In addition, the area yield calculation unit 210 is based on the general formula 1 described above, the number (number of lines) and / or strips 11 of the strips 11, 12, 13 having the maximum area yield ( 12) 13 can calculate the width.

The cutting unit 300 may cut the fabric 10 in a cutting form having a maximum area yield based on the result calculated by the area yield calculating unit 210. For example, the cutting part 300 is the number (stripes) of the strips 11, 12, 13 and / or strips 11, 12, 13 calculated by the area yield calculator 210. The fabric 10 can be cut to a width of.

The cutting unit 300 includes a cutting device. The cutting device may include, for example, support means for supporting the fabric 10 and cutting means for cutting the fabric 10. The support means may comprise one or more selected from, for example, a transfer conveyor, a roll, a support plate, and the like. The cutting means may have a structure including one or more selected from, for example, a metal knife, a jet water knife and a light source (laser beam irradiator, etc.). In addition, the cutting part 300 includes a first cutting part which slits the fabric 10 in the longitudinal direction to obtain a plurality of strips 11, 12, 13. In addition, the cutting part 300 may include a second cutting part which cuts the obtained strips 11, 12, 13 in the width direction to obtain a single product.

On the other hand, the production system of the cutting product may further include a defect information storage unit 400 and the good value calculation unit 500.

The defect information storage unit 400 is inputted and stored the defect information of the far-end (10). The defect information may include, for example, a distribution (position) of the defect (d) and / or the kind of the defect (d) existing in the far-end 10. For example, the defect information may be inspected by a defect inspection apparatus (not shown) and input to the defect information storage unit 400. In addition, the defect information may be displayed on the x-y coordinates through a monitor (not shown).

The yield calculation unit 500 calculates an area yield according to the yield ratio, that is, the distribution of the defects d, based on the distribution of defects d stored in the defect information storage unit 400. This is as described in the above embodiment. The yield calculation unit 500 calculates a yield ratio in consideration of the distribution of the cutting shape and the defect (d) when the cutting shape having the maximum area yield is calculated by the area yield calculation unit 200. For example, as illustrated in the above embodiment, it is assumed that the cutting form having the maximum area yield is 1 row of A products and 2 rows of B products. In this case, the yield calculation unit 500 calculates the yield ratio according to the arrangement order of one line of A product and two lines of B product on the fabric 10. Specifically, as shown in Figures 3 to 5, the yield ratio according to the arrangement of each product is calculated. And the cutting unit 300 can cut the fabric 10 in an array having the highest yield rate.

The profit calculator 220 calculates a profit based on the information of the product information input unit 110 and / or the far-end information input unit 120. In one example, the revenue calculation unit 220 includes at least a revenue calculator for calculating and calculating the revenue for each product, for example, it can calculate the revenue through the general formula (2). For example, when there are A, B, and C products, the price (sale price) of each product and the manufacturing cost of the fabric 10 are calculated to calculate the profit for each product.

In addition, the profit calculation unit 220, based on the above-described formula (3) or formula (4), the number of strips 11 (12 (13) having the highest profit (number of lines), strips 11 ( It is possible to calculate the number of production of the unit 10a produced in 12), the width of the strips 11, 12, 13 and / or the fabric 10.

The cutting unit 300 may be cut to a size (product) having the highest profit based on the result calculated by the profit calculating unit 220. In detail, the cutting unit 300 cuts the fabric 10 to a size (product) having the highest profit among the profits of each product calculated by the profit calculating unit 220. In addition, when the cutting unit 300 calculates the cutting form having the highest profit based on the general formula 3 or the general formula 3, the cutting unit 300 may cut the fabric 10 in such a cutting form. have.

In addition, when the foundation form having the highest profit is calculated by the revenue calculator 220, the yield calculator 500 may calculate a yield ratio in consideration of the distribution of the foundation form and defects (d). For example, in the third embodiment, it is assumed that the cutting form having the highest profit is two lines of A product and one line of D product. In this case, the yield calculator 500 calculates the yield rate according to the arrangement order of two lines of A product and one line of D product on the fabric 10. Specifically, as shown in Figures 8 to 10, the yield ratio according to the arrangement of each product is calculated. And the cutting unit 300 can cut the fabric 10 in an array having the highest yield rate.

Further, in another embodiment of the present invention, the fabric 10 is slitting and cut to have the highest profitability and / or yield rate as described above, and then separately to the slitting and cut strips 11, 12 and 13 Unit cutting can be performed by (10a).

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art having various ordinary knowledge of the present invention may make various modifications, changes, and additions within the spirit and scope of the present invention. And additions should be considered to be within the scope of the following claims.

According to the present invention, it is possible to provide an improved method for producing a cut product and a production system for a cut product.

Claims (20)

1. An area yield calculation step of calculating the number of strips and the width of the strips so that the area yield is equal to or greater than a predetermined value when cutting the fabric; And

   And a cutting step of slitting and cutting the fabric in the longitudinal direction by the number of strips and the width of the strip calculated in the area yield step to obtain a plurality of strips.
2. The method of claim 1,

   The area yield step is performed by calculating the number of strips and the width of the strip so that the S value according to the following general formula (1) has a minimum value:

   [Formula 1]

   

   Where X is the width of the fabric, n is the number of strips, and W is the width of each strip.
3. The method of claim 2,

   The S value is calculated by varying at least one of the number of strips and the width of the strip.
4. The method of claim 1,

   A method of producing a cut product in which the width of the strip is set equal to the width or length of the unit product produced in each strip.
5. The method of claim 1,

   The cutting step further comprises the step of arranging the position of each strip based on the defect distribution of the fabric.
6. An area yield calculation step of calculating an area yield of the fabric, which varies according to the cutting method of the fabric;

   A profit calculation step of calculating a profit of a product that changes according to the cutting method of the fabric; And

   A method of producing a cutting product, comprising a cutting step of cutting the fabric with a cutting method based on at least one of the calculated area yield and the calculated product yield.
7. The method of claim 6,

   In the cutting step, the profit of the product calculated by the first cutting method is greater than the profit of the product calculated by the second cutting method even if the area yield calculated by the first cutting method is lower than the area yield by the second cutting method. If the production method of the cut product is carried out by cutting the fabric in a first cutting method.
8. The method of claim 6,

   The cutting stage is a production method of cutting products, which is performed by cutting the fabric with a cutting method in which the profit of the product calculated in the profit calculation step shows the maximum value.
9. The method of claim 8,

   The product to be cut is a single product obtained by cutting the fabric in the longitudinal direction and the width direction, respectively, or a strip-shaped strip produced by cutting the fabric in the longitudinal direction.
10. The method of claim 6,

    The method of producing a foundation product, characterized in that the revenue of the product is calculated through the following general formula 2:

    [Formula 2]

    

    Where n is the number of products to be cut and P is the price of each product to be cut.
11. The method of claim 6,

    Revenue calculation step is performed based on the following general formula (3),

    The cutting step includes the steps of slitting and cutting the fabric in the longitudinal direction to obtain a plurality of strips according to a cutting method in which the value of M represents a maximum value, and cutting the plurality of cut strips in the width direction to obtain a single piece. Production method of foundation products:

    [Formula 3]

    

    Where n is the number of strips, T is the number of units produced in each strip, and P is the price of the units produced in each strip.
12. The method of claim 11,

    M value is calculated while varying the width of the strip and / or the number of strips.
13. The method of claim 11,

    A method of producing a cut product in which the width of the strip is set equal to the width or length of the unit.
14. The method of claim 11,

    Obtaining the plurality of strips further comprises arranging the position of each strip according to the defect distribution of the fabric.
15. The method of claim 6,

    Revenue calculation step is performed based on the following general formula (4),

    The cutting step includes a fabric selection step of selecting a fabric according to a cutting method in which a value of R indicates a maximum value; Slitting the selected fabric in the longitudinal direction to obtain a plurality of strips; And cutting each of the obtained strips in the width direction to obtain a single product.

    [Formula 4]

    

    Where m is the number of fabrics, n is the number of strips produced in each fabric, T is the number of units produced in each strip, and P is the price of the unit produced in each strip.
16. The method of claim 15,

    R value is calculated by varying the width of the strip and / or the number of strips.
17. The method of claim 15,

    A method of producing a cut product in which the width of the strip is set equal to the width or length of the unit.
18. The method of claim 6,

    The area yield calculating step is performed by calculating the number of strips and the width of the strip so that the area yield is equal to or greater than a predetermined value.
19. An area yield calculation unit for calculating the number of strips and the width of the strips so that the area yield is equal to or greater than a predetermined value when cutting the fabric; And

    And a cutting part which slits and cuts the fabric in the longitudinal direction by the number of strips and the width of the strip calculated by the area yield calculation part to obtain a plurality of strips.
20. The method of claim 19,

    A product information input unit for inputting a price for each product to be cut; And

    And a profit calculator configured to calculate a profit according to a product based on a price for each product input to the product information input unit.

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