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WO2017037624A1 - Contenant à éléments porteurs perfectionnés - Google Patents

Contenant à éléments porteurs perfectionnés Download PDF

Info

Publication number
WO2017037624A1
WO2017037624A1 PCT/IB2016/055185 IB2016055185W WO2017037624A1 WO 2017037624 A1 WO2017037624 A1 WO 2017037624A1 IB 2016055185 W IB2016055185 W IB 2016055185W WO 2017037624 A1 WO2017037624 A1 WO 2017037624A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
feature
sidewall
previous
crease
Prior art date
Application number
PCT/IB2016/055185
Other languages
English (en)
Inventor
David John Mead
Original Assignee
Oji Fibre Solutions (Nz) Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oji Fibre Solutions (Nz) Limited filed Critical Oji Fibre Solutions (Nz) Limited
Publication of WO2017037624A1 publication Critical patent/WO2017037624A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/54—Lines of weakness to facilitate opening of container or dividing it into separate parts by cutting or tearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form

Definitions

  • the present invention relates to a container and methods of making containers with features providing enhanced load bearing characteristics.
  • Containers made from corrugated paperboard usually come in a rectangular box shape. These containers may contain material or items to be shipped. They can be heavy when containing material or items.
  • the containers may be stacked ontop of each other during storage and/or distribution. Accordingly, the containers are designed to be able to take a certain degree of top loading.
  • Such top loading may be static top loading or in the case of the containers being stacked in a vehicle, during transportation, the top loading may be dynamic.
  • High static or dynamic top loading can cause the sidewalls of a container to fail. This failure usually occurs in the form of buckling that results in a curved sidewall crease 11 as shown by way of the dotted line in figure 1 and 2. If it is intended that a container will be subject to greater top loading, the container usually requires greater sidewall thickness in order to improve performance and resist buckling and/or failure.
  • the invention broadly comprises a container comprising : a rectangular base and upstanding side walls projecting from the base to define a containment region,
  • At least one sidewall having a feature extending across the would be line of creasing of the sidewall where a failure crease would form due to an excessive top load placed on the sidewall, to isolate the vertical sidewall edge adjacent said feature from said failure crease.
  • the invention broadly comprises a container comprising : a rectangular base and upstanding side walls projecting from the base to define a containment region,
  • At least one sidewall having a feature extending across the would be line of creasing of the sidewall where a failure crease would form due to an excessive top load placed on the sidewall, to isolate at least one or both of the distal ends of the vertical sidewall edge adjacent said feature from said failure crease.
  • the feature is a linear feature.
  • said feature is elongate and extends in a direction not parallel to said failure crease.
  • said feature is a line of weakness.
  • the feature is a crease or score-line.
  • the sidewall has at least two features.
  • each feature is discrete from the others.
  • the feature is an extra layer of material on said side wall.
  • said extra layer is a line of adhesive, or paperboard, or plastic, or a thicker cross sectional thickness.
  • the feature is a line of perforation of as least part of the sidewall.
  • the feature is formed on the inside of the sidewall. According to another aspect the feature extends from near the sidewall edge and projects upwardly toward the top edge of said sidewall.
  • the container is an erectable container.
  • the container is formed from planar material.
  • planar material of said container is a paperboard including a laminate structure.
  • said laminate structure has a corrugated core.
  • the said corrugate core is sandwiched between two sandwiching layers of paper or paperboard.
  • the feature is defined at one side of said sidewall, preferably at one sandwiching layer.
  • the corrugation flute direction is vertical.
  • the sidewalls are a corrugated paperboard.
  • the sidewalls are rectangular.
  • the feature extends in a direction that is perpendicular to a direction that a would be failure crease extends at a point where it would encounter the feature.
  • the feature extends at between 20 to 70 degrees to the top edge of the sidewall panel.
  • the container is flap closeable.
  • the vertical sidewall edge and/or distal end thereof is at least partially isolated as a result of the feature deflecting the crease line away, preferably to the top edge of the sidewall.
  • the invention broadly comprises in a container comprising : a rectangular base and upstanding side walls projecting from the base to define a containment region,
  • At least one side wall having a feature located in a position to intercept a side wall failure crease that can form due to an excessive top load placed on the sidewall to isolate the vertical sidewall edge adjacent said feature from the side wall failure crease.
  • the invention broadly comprises a container comprising : a rectangular base and upstanding sidewalls projecting from the base to define a containment region,
  • the invention broadly comprises a method of reinforcing a container of a kind comprising a rectangular base and upstanding sidewalls, to increase the container's resistance to top load sidewall failure, said method comprising :
  • the feature is a linear feature.
  • said feature is elongate and extends in a direction not parallel to said failure crease.
  • said feature is a line of weakness.
  • the feature is a crease or score-line.
  • the sidewall has at least two features.
  • each feature is discrete from the others.
  • the feature is an extra layer of material on said side wall.
  • said extra layer is a line of adhesive, or paperboard, or plastic, or a thicker cross sectional thickness of the sidewall.
  • the feature is a line of perforation of as least part of the sidewall.
  • the feature is formed on the inside of the sidewall.
  • the feature extends from near the sidewall edge and projects upwardly toward the top edge of said sidewall.
  • the container is an erectable container.
  • the container is formed from planar material.
  • planar material of said container is a paperboard including a laminate structure.
  • said laminate structure has a corrugated core.
  • the said corrugate core is sandwiched between two sandwiching layers of paper or paperboard.
  • the feature is defined at one side of said sidewall, preferably at one sandwiching layer.
  • the corrugation flute direction is vertical.
  • the feature extends in a direction that is perpendicular to a direction that a would be failure crease extends at a point where it would encounter the feature.
  • the feature extends at between 20 to 70 degrees to the top edge of the sidewall panel.
  • the invention broadly comprises a container as herein described and with reference to any one or more of the drawings. According to another aspect the invention broadly comprises a method as herein described and with reference to any one or more of the drawi ngs.
  • the invention broadly comprises a blank erectable into a container as herein described and with reference to any one or more of the drawings.
  • Figure 1 is an illustration of the prior art container undergoing buckling of the sidewalls approximately along the broken line illustrated due to top loading .
  • Figure 2 is an illustration of a stack of prior art containers of figure 1.
  • Figure 3 shows a view of a container sidewall, including loadbearing improvement features.
  • Figure 4 is a perspective view of a container showing the loadbearing improvement feature that helps isolate the vertical corners from a top load caused sidewall failure crease.
  • Figure 5 is a perspective view of an open topped container showing the loadbearing improvement features.
  • Figure 6 is a side view of a sidewall showing a plura lity of features.
  • Figure 7 shows the features in a slightly different location, and also shows how the features may deflect the crease away from the top corner of a container.
  • Figure 8 is a perspective view of part of a contai ner sidewall showing a loadbearing improvement feature.
  • Figure 9 is a sectional view through section AA of Figure 6, showing a loadbea ring improvement feature in cross-section .
  • Figure 10 is a sectional view of an alternative loadbearing improvement feature in cross- section.
  • the container may be an open topped container, as shown in Figure 5, or alternatively a flap closeable (or otherwise topped) container as shown in Figure 4.
  • the container comprises of a base 2 upwardly from which project a plurality of sidewalls 3.
  • the sidewalls 3 may be made of a corrugated paperboard construction of which Figures 8 and 9 provide more detail.
  • the entire container may be made from a corrugated paperboard construction, and it is anticipated that the paperboard may comprise a number of laminated layers, and may further comprise layers of different materials as is known in the art. For example, it is common to coat paperboard containers with liquid and/or gas impervious membranes in order to improve
  • the plurality of sidewalls 3 extend upwardly from the base 2 and are each joined at sides 4 and 5 to respective adjacent sidewalls.
  • the join may be by virtue of a fold of a blank and or other join such as an adhesive join etc.
  • Each sidewall extends to a top opening of the container 1 whether such opening is flap closeable or other.
  • the top edge 6 of each sidewall may hence be a free edge or may be an edge from which a flap is dependent.
  • a vertical corner zone 9 Adjacent each vertical edge 8 and positioned at the junction of two adjacent sidewalls, is a vertical corner zone 9 as shown in hatching in Figure 5.
  • the corner zone 9 is only shown on one corner of the container 1 in figure 5.
  • the vertical 8 edge has distal ends 15 and 16.
  • This zone is a zone of strength of the container in that it creates an effective pillar to help support vertical load through the container (for example, from multiple Containers 1 stacked on top of each other) .
  • the strength is partly achieved due to the adjacent walls extending at an angle to each other, creating a high second moment of area, that resists bending and/or buckling in that zone.
  • This loadbearing zone 9 can, by way of the feature 10 as will herein further be described, be isolated from the sidewall failure crease 11 that may form in at least one (and perhaps more than one, or all) sidewalls of the container when the container is subject to top loading, and begins to buckle.
  • the feature 10 may for example be a crease, or score line, or other form of weakness as more clearly shown in Figures 8 and 9.
  • the feature 10 May be an area of relative strength, as illustrated
  • the feature 10 may be a strip of additional material such as an adhesive, or extra layer of board (or other material), or may be an area that is locally thicker than the remaining sidewall.
  • the feature 10 is preferably located on or at the sidewall, at a location where such a sidewall failure crease 11 would otherwise naturally pass through, or across as it propagates under loading to the sidewall edge 8.
  • Such natural propagation during buckling failure may be to the edge 8, between the ends 15 and 16 of the edge 8, or to the distal end 15 and/or 16 (i.e. the corners of the container).
  • a sidewall failure crease 11 that is created due to any undesirable and/or excessive top loading, does not cross the feature 10, and/or is deflected away from the sidewall edge 8.
  • the failure crease 11 is deflected away from the distal ends 15 and/or 16 of the edge 8, where such a feature is located in the path of such a failure crease.
  • failure crease 11 propagation encroaches the area adjacent the vertical corner of a container, and the ultimate top load strength of the container can be significantly compromised . This is because normally, the vertical corners provide a significant portion of the resistance to container failure (such as crushing, or partial crushing, or vertical collapse, or partial collapse, of the container).
  • the loadbearing enhancing feature 10 acts to isolate at least one vertical corner region of a container from sidewall failure creasing to reduce the incidence of a significant top load failure of the container.
  • the feature 10 may be in the form of a straight line, and may be for example a short straight line that is preferably located at substantially 90 degrees to the path of a n expected sidewall failure crease 11.
  • the geometry and/or size of the container will to some degree dictate the likely or expected path of buckling failure crease 11.
  • the angle of alignment between crease 11 and feature 10 may not necessarily be at 90 degrees, but is preferably presented to be at an approximately perpendicular, or at a non-parallel angle to the sidewall failure crease 11.
  • the position of the feature 10 is preferably close to a corner 8 and preferably also close to at least the top edge 6 of the container.
  • a feature 10A may also additionally be provided near the base 2 of the container at the sidewall 3.
  • each of the sidewalls 3 may include a plurality of such features 10 appropriately positioned to help isolate the zone 9 adjacent each of the edge 8 (preferably each corner 15,16) of the container from the progression of a sidewall failure crease 11, to or towards each edge 8.
  • the feature 10 is formed on the inside face 12 of a sidewall. This is for example shown in Figure 5 and in Figure 9.
  • the inside face 12 is on the inside of the containment region of the container whereas the outside face 13 faces outwardly from the container.
  • the feature 10 may be a scored line or other formation in a sidewall of the container.
  • the feature 10 may terminate the progression of a sidewall failure crease 11 or it may deflect such a sidewall failure crease away from the edge 8 and/or zone 9 and/or the distal ends 15/16 of the edge 8. This therefore ensures that the sidewall failure crease 11 does not progress into or towards the vertical pillar structure of the container at a location or locations to help ensure that the container still has at least some, and preferably substantially all of its top load carrying strength intact, and/or to prevent the corners of the container from crumpling. It is preferred that the feature 10 is provided on the inside face of the container because usual failure of a sidewall is outwards. A sidewall bowing out results in a compression failure at the inside face of the corrugated assembly and tension failure on the outside face. Therefore placing a feature 10 on the inside face of the sidewall will have a better outcome for the performance of the container, and additionally means that the feature 10 is not visible from the outside of the container.
  • a feature 10 may come preferably close to the corner 8 of a container and may for example sit in the range of 30-40mm from the corner depending on the container size.
  • It may extend as a linear (straight or curved) feature of between 20-70 degrees to the horizontal edge of a sidewall panel.
  • each side wall preferably has 4 such features, one each located in a respective quadrant (Ql-4) of the side wall, as illustrated in Figure 3.
  • the location of feature 10 is proximate more the corner of the quadrant near the corners of the container, than near the middle of the side wall.
  • the features 10 may only be present in quadrants Q2 and Q3.
  • feature 10 can have a significant effect of the overall performance of the container's load bearing performance. For example, if the feature (e.g. crease or other area of weakness) is too large/deep, it can weaken the entire container and have an adverse overall impact. Therefore, it is preferred that the feature only provides a small local weakening of the cardboard sidewalls, sufficient to influence the pathway of failure without significantly weakening the wall. When designed properly, the feature sacrifices a small amount of wall strength, but overall increases the containers ability to resist bucking and improves the ultimate load required for crushing failure. In total it has been found that an increase of around 10% in load bearing capability before failure may be achieved.
  • the feature e.g. crease or other area of weakness
  • a shallow and narrow crease is preferred as the form of feature 10.
  • a shallow and narrow crease provides an excellent balance between providing a line of weakness for failure to follow, without weakening the wall too much.
  • a crease depth of around 1mm is most effective.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)

Abstract

La présente invention concerne un contenant en carton ondulé ayant des éléments porteurs perfectionnés. Habituellement les contenants en carton ondulé se composent d'une base rectangulaire et de parois latérales montantes faisant saillie à partir de la base pour délimiter une boîte, qui peut être fermée par un rabat. De tels contenants sont bien connus et utilisés pour transporter et/ou stocker des marchandises, auquel moment ils sont empilés les uns sur les autres. Dans certains cas, la pile peut être surchargée et un ou plusieurs contenants peuvent gondoler, ce qui peut entraîner une réduction de la capacité porteuse de la pile et peut endommager les marchandises contenues à l'intérieur. Afin d'améliorer la capacité porteuse du contenant, au moins une paroi latérale comprend un élément s'étendant à travers "ce qui serait" la ligne de plissement de la paroi latérale afin d'empêcher le bord de paroi latérale verticale adjacent audit élément de lâcher.
PCT/IB2016/055185 2015-08-31 2016-08-31 Contenant à éléments porteurs perfectionnés WO2017037624A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ711665 2015-08-31
NZ71166515 2015-08-31

Publications (1)

Publication Number Publication Date
WO2017037624A1 true WO2017037624A1 (fr) 2017-03-09

Family

ID=58186969

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2016/055185 WO2017037624A1 (fr) 2015-08-31 2016-08-31 Contenant à éléments porteurs perfectionnés

Country Status (1)

Country Link
WO (1) WO2017037624A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10696444B2 (en) 2017-12-01 2020-06-30 Georgia-Pacific Corrugated Llc Container with window display panel

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB286495A (fr) * 1927-03-25 1928-03-08 Jan Van Gemert, Junior
GB391557A (en) * 1932-01-28 1933-05-04 Mansfields Norwich Ltd Improvements in and relating to collapsible boxes
US3100072A (en) * 1961-07-31 1963-08-06 James J Mason Corrugated paper container
US3704824A (en) * 1971-03-05 1972-12-05 Corco Inc Fiberboard flat with joined strengthened corners for setting up into an angular tray and the set-up tray
WO2010128874A1 (fr) * 2009-05-05 2010-11-11 Bessand A.I. Ltd Emballage à faces renforcées
DE202012007445U1 (de) * 2012-08-04 2013-08-05 Baypack Gmbh Transportsteige, insbesondere für Obst oder Gemüse
WO2014110070A1 (fr) * 2013-01-09 2014-07-17 Georgia-Pacific Corrugated Llc Carton renforcé

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB286495A (fr) * 1927-03-25 1928-03-08 Jan Van Gemert, Junior
GB391557A (en) * 1932-01-28 1933-05-04 Mansfields Norwich Ltd Improvements in and relating to collapsible boxes
US3100072A (en) * 1961-07-31 1963-08-06 James J Mason Corrugated paper container
US3704824A (en) * 1971-03-05 1972-12-05 Corco Inc Fiberboard flat with joined strengthened corners for setting up into an angular tray and the set-up tray
WO2010128874A1 (fr) * 2009-05-05 2010-11-11 Bessand A.I. Ltd Emballage à faces renforcées
DE202012007445U1 (de) * 2012-08-04 2013-08-05 Baypack Gmbh Transportsteige, insbesondere für Obst oder Gemüse
WO2014110070A1 (fr) * 2013-01-09 2014-07-17 Georgia-Pacific Corrugated Llc Carton renforcé

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10696444B2 (en) 2017-12-01 2020-06-30 Georgia-Pacific Corrugated Llc Container with window display panel

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