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WO1993013936A1 - Procede et appareil permettant de fabriquer des sachets a deux languettes pour le commerce - Google Patents

Procede et appareil permettant de fabriquer des sachets a deux languettes pour le commerce Download PDF

Info

Publication number
WO1993013936A1
WO1993013936A1 PCT/US1992/002920 US9202920W WO9313936A1 WO 1993013936 A1 WO1993013936 A1 WO 1993013936A1 US 9202920 W US9202920 W US 9202920W WO 9313936 A1 WO9313936 A1 WO 9313936A1
Authority
WO
WIPO (PCT)
Prior art keywords
bag
bags
stacking
packet
pins
Prior art date
Application number
PCT/US1992/002920
Other languages
English (en)
Inventor
Robert Benjamin Dematteis
Original Assignee
Polytec Packaging
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 Polytec Packaging filed Critical Polytec Packaging
Publication of WO1993013936A1 publication Critical patent/WO1993013936A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/92—Delivering
    • B31B70/98—Delivering in stacks or bundles
    • B31B70/984—Stacking bags on wicket pins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents

Definitions

  • This invention relates to so-called dual tab merchandising bags.
  • an apparatus and process for the manufacture of such bags is improved downstream of the so-call bagging machine enabling parallel streams of cut and severed manufactured bags to be stacked, drawn in parallel to a cutting die, simultaneously cut for formation of the handles and tabs.
  • Such bags include a front panel, and a rear panel, these panels occupying the full dimension and width of the bag.
  • the front and rear panels are joined by folded and "W"-shaped front and rear gusset sides therebetween (hereinafter referred to as
  • gussets The bags are sealed at the bottom and open at the top. Before the bag is opened, the front and rear gussets are folded at a central gusset fold upon themselves and collapsed under and between the bag front and rear panels in a " " fold. When the bag is in the collapsed position, the folded gussets only extend partially the width of the front and rear panels of the bag. Thus if the bag in the collapsed position is observed near the side edge, the bag will be found to have four overlying layers. These layers will include: the front panel, the front gusset, the rear gusset, and finally the rear panel. If however, the bag in the collapsed position is observed in the center, the bag will be found to have two overlying layers. These layers will only be the front and rear panels.
  • handle holes are provided centrally of the front and rear panels adjacent the top of the bag. Typically the holes are round, registered over one another, and enable support from the front and rear panels to permit merchandise to be carried in the bag when the bag is grasped and held at the handles.
  • the tabs at each bag corner usually define a common hole through the center of the tabs from which the bag packet can be mounted and suspended on stanchions.
  • perforations are used between the body of the bags and the tabs as the separation point between the bag and its associated tabs.
  • a tube of plastic is formed by "blowing" the tube upwardly into apparatus which holds the tube in a cylindrical upwardly progressing tube.
  • the upwardly blown tube is a co-extruded tube.
  • This co-extruded tube includes a high coefficient of friction surface on the outside of the tube and a low coefficient of fraction surface on the inside of the tube.
  • the bags manufactured will have the same characteristic. The bags will have a high coefficient of friction surface on the outside of the bag and a low coefficient of friction surface on the inside of the bag.
  • the tube is collapsed and thereafter gathered to a cylindrical roll.
  • Such rolls typically accumulate considerable material — it is not uncommon for a collapsed tube of bag material to form a roll about five feet in width weighing 2000 pounds.
  • the roll is thereafter placed at the beginning of a so-called "bag machine line” and serially unwound in the manufacture of bags.
  • the tube of material first passes through a printing station where it is imprinted with the desired bag logo on the exterior of both sides of the tube. Thereafter, the collapsed and printed tube is passed through dryers — where the ink on the freshly printed bag is dried on both sides.
  • slit sealers both cut and seal the bag longitudinally at the sides.
  • slit sealers will cut and seal intermediately of the tube the necessary three additional tubular boundaries.
  • the next step is the placement of so-called "gussets" in the bag sides.
  • each one of these tubes is flooded with a small amount of air, this air being trapped in each of the moving tubes between upstream and downstream opposed roller pairs.
  • the bag making machine is immediately preceded by "dancing rollers.” These dancing rollers have the function of turning the continuously and constantly advancing side-by-side tubes into intermittently advancing tubes.
  • This intermittent advance is directly related to the length of the bag. Specifically, the dancing rollers intermittently advance a length of bag material sufficient to make one bag as measured from the top of the bag to the bottom of the bag. Once this advance has occurred, the bag machine severs and seals the tubes — with the severing and sealing occurring substantially simultaneously. Thereafter, the intermittent advance resumes, and the next in order bag is sealed and severed. The sealed and severed bags are then serially stacked one upon another, this process continuing until a number of bags sufficient to form a bag "packet" is counted out.
  • these stacks vary in number in accordance with the thickness of the bags, with thinner bags having a high number of fabricated bags in the packet and thicker bags having a lower number of bags in the fabricated packet.
  • the preferred embodiment of the bag here utilized where the bags are 1 mil thick, stacks of 25 such bags are formed. Once a stack of the requisite number is gathered, the bags as a group are passed to a conveyor for passage to a worker downstream. This worker is commonly referred to as a "packer.”
  • the first task is to align the bags at their respective edges — this alignment usually including the top of the bag, the bottom of the bag, and the side edges (adjacent the gusset folds) of the bag.
  • This alignment is required in the normal bag making operation because the stacking operation is not perfect.
  • the individual bags are stacked, it is a common occurrence that the bags come out of alignment at all their respective edges.
  • the respective tab areas of the packet are fused together. This effectively binds and holds the registered bag packets together.
  • the fused packet is registered to a "clicker press.”
  • This machine cuts the bag tops of the packet with a die. In the cutting, the tabs and the handle hole are defined in the top of the bag. This completes the bag manufacturing process.
  • packets of bags are dispensed from each line at the rate of about 80 to 110 bags per minute depending on length — smaller bags move faster.
  • this invention relates to an improvement to the manufacturing process at the so-called "bag making machine.”
  • a dual tab merchandising bag is disclosed in the above incorporated patent application which is capable of being serially dispensed and opened with a single grasping movement of a clerk's arm at the handle opening of the bag front wall.
  • the function of the bag to effect the serial opening can be best understood by first understanding the improved construction of the bag tabs and thereafter reviewing the serial dispensing of the bags from a bundle of commonly manufactured bags and the interaction of the improved tabs in assisting bag opening.
  • the tabs here utilized are connected to the body of the bag by two so-called projections or "tits.” These projections are each formed by paired cuts separating the body of the bag from tabs. The cuts are arcuate and spaced apart one from another at their respective ends. The arcuate cuts form between the tabs and the body of the bag severed borders that point away from the body of the bag and to or toward the material of the tab.
  • Each tab has a border defined from the bag body by three arcuate cuts.
  • the first arcuate cut is from the bag side to the tip of the tab side projection.
  • the second arcuate cut begins the tab side projection and extends to the tab central projection.
  • the third arcuate cut begins at the central arcuate projection and terminates at the bag top.
  • the arcuate cuts end at the projections so as to define two upwardly concave borders that almost meet, these upwardly concave borders being disposed towards the material of the tab to define on the material of the bag the "tit" or projection.
  • a centrally disposed projection overlies the more central portion of the bag. It is placed at a location where it does not conflict with the gusset sides of the bag. Thus this centrally disposed projection connects two layers at the center portion of the bag.
  • the layers of the bag connected by the central gusset projection are the front panel and the rear panel.
  • the tabs of overlying and similar bags are fused together. They define a common central aperture. This aperture forms the point of suspension of the bags.
  • the tab on one side of the bag is symmetrical with the tab on the opposite side of the bag.
  • the description of one tab at one side of the bag likewise serves to describe the other tab at the other side of the bag.
  • the discussion of the operation of one tab at one side of the bag will set forth the symmetrical and simultaneously occurring operation of the tab at the other side of the bag.
  • the packet of bags are usually disposed at their upper open end on a flat surface, although this is not required.
  • the flat surface includes two upwardly disposed stanchions.
  • stanchions are threaded through the common aperture of one bag tab of the packet; the other stanchion is threaded through the common aperture of the remaining bag tab of the packet.
  • the stanchions are spaced apart so that the material of the bags in the packet lies flat between the stanchions.
  • the bag packet is disposed so that the opening of the bags is to and towards the clerk. This enables grasping of the bag at its open top to occur. The bag is pulled away from the packet of bags outwardly so that the sealed bottom of the bag being dispensed eventually moves over the top of the remaining bags in the bag packet.
  • the front bag panel will begin to be pulled forward.
  • the front panel of the bag being dispensed will slide forward and over the rear panel of the bag being dispensed.
  • the sliding of the front panel over the rear panel and gussets will be assisted by the relative low coefficients of friction of the inside surfaces of the bag.
  • the central projection connecting the front panel to the bag tab will come under tension.
  • the central projection will tear. Severing of the central projection will occur.
  • the projections tear — one at a time at each tab. Further as the projections serially tear, they dynamically interact to dispose the bag to the open position. Specifically, the projections tear in sequence about the circumference.
  • the gusset panels and the rear panels are out of registry with the panels of the underlying bag packet.
  • the only portion remaining in registry with the bag packet is the rear panel adjacent the inside gusset. Stated in other terms, the entire bag is being moved away from the rear panel adjacent the open end of the bag. The bag is thus being opened by the natural dispensing action.
  • a bag making machine is modified at the discharge side to include upwardly protruding stacking pins at the stacking area of the severed bags adjacent the open and fused ends of the bag.
  • the sealed and severed bags are impressed downward over the stacking pins after severing to immediately impale just made bags at their upstream, open, and trailing end so that severed bags are aligned at their open end in precise registry one stacked on another.
  • the bag is fused in the gusset area at the upper open corners of the bag to bags immediately below.
  • This fusing continues with each stacked individual bag until the total number of bags required for the bag packet is counted.
  • spaced apart paired gripping fingers grasp the bag packet at the sealed and stacked bottom ends of the bags constituting the packet.
  • the respective locator or stacking pins retract from the stacking area at the fused open end of the stacked bag packet, and the bag packet is free to move.
  • the gripper fingers for all of the common bag lines are commonly mounted to a gripper finger bar.
  • This gripper finger bar extends across the width of the four bag packets and moves parallel to the direction of bag packet conveyance.
  • Movement of the bag packets from each of the parallel streams of bags occurs in parallel.
  • the gripper fingers grasping the fused bag packets at the bottom, simultaneous move the bags down stream to a universal cutting table.
  • Each bag packet is grasped by two such fingers so that the fused open ends follow in precise alignment from their point of stacking on and impalement to the stacking pins.
  • These aligned and parallel bags are thereafter dragged and stopped at their open end under a cutting die mounted on the universal cutting table.
  • the cutting die is configured to cut each of the registered open and fused ends of the bag packets.
  • One portion of the cut defines in each bag packet the required handle hole in the front and rear panels of the stacked bags.
  • the other portion of the cut defines in each bag packet the required cuts around the fused portion of the bag to define the bag tabs. It will be understood that the bag tab of the bag construction incorporated by reference is preferred.
  • Each bag packet from each serial stream is cut simultaneously. Once cutting has occurred, the gripper fingers continue rearward, further dragging the bag packet. Final deposit of the bag packet occurs to an underlying conveyor.
  • the bag packets are thereafter deposited on the conveyor and conveyed to product inspectors.
  • FIG. 1 is a schematic of a bag line from a cylindrically wound and collapsed tube to the entrance to a bag machine, this much of the supplied view schematically illustrating the prior art;
  • Fig. 2 is a perspective taken at the bag machine illustrating the machine from a point of view down stream of the bag knife and bottom sealing apparatus, showing bags previously stacked and fused at the stacking area impaled on the stacking pins with the bag stock being fed through the bag knife/bottom sealing apparatus for stacking of the next sequential bag, the view here illustrating the four side-by- side packs;
  • Fig. 3A - 3D are a side elevation section of the bag packets showing in cartoon series:
  • FIG. 3A illustrating the next in order bag being advanced
  • Fig. 3B illustrates the same next in order bag of Fig. 3A being impaled and fused to the bag packet;
  • Fig. 3C illustrates the complete bag packet with the preferred 25 bags have been accumulated with the bottom of each bag packet disposed for grasping by gripper fingers and stacking pins being retracted from the top end of the bag so that the stacked, fused and aligned top end of the bag is free to move;
  • Fig. 3D illustrates the complete bag packet being pulled away by the gripper fingers from the stacking area with the sealed bottom ends of the bags of the bag packet being dragged first and the trailing open ends of the bags of the bag packet following;
  • Fig. 4 is a perspective view of the parallel stream of bags registered to the cutting die on the universal cutting table with the cutting die about to perform the tab and handle forming cuts on all bag packets simultaneously;
  • Fig. 5 is a perspective view of the parallel stream of bags pulled away from the cutting dies at the universal cutting table with the gripper fingers releasing the completed bag packets to an underlying conveyor for transport to inspection and packing stations.
  • Fig. 1 a schematic of bag production is offered for the understanding of the viewer.
  • Blown film extruder B extrudes at least plastic bag material having a relatively high exterior coefficient of friction and a relatively low interior coefficient of friction in cylindrical chimney C.
  • extruded plastic film P is collapsed, passes through driving roller pairs 14, 16, and 18 with the material being accumulated to cylindrically wound roll 20.
  • Roll 20 can be quite large — in the order of five feet wide and 2,000 pounds. It is typically transferred to and unwound at the beginning of a bag line as partially illustrated at the remaining portions of Fig. 1.
  • Roll 20' unwinds through printers R, and R 2 and passes the freshly printed bag stock through dryers D l and D 2 .
  • the material is routed via rollers 26, 28, 30, 32 to three slit/sealers L,, j, and L 3 . It is the function of these respective slit/sealers L Iq, and L 3 to cut a seam in the advancing plastic tube and at the same time to seal the seam in the passing plastic tubes. Therefore, the reader will understand that where one tube P had existed before slit/sealers L,, 1 ⁇ , and L 3 , after the slit/sealer four continuously conveyed plastic tubes P,, P 2 , P 3 , and P 4 will exist.
  • the respective continuously conveyed plastic tubes P,, P 2 , P 3 , and P 4 will be adjacent one to another.
  • the continuously conveyed plastic tubes P,, P 2 , P 3 , and P 4 pass above the respective slit/sealers Lj, I ⁇ , and Lj and roller pair 50 and 52, they are inflated with constantly displaced bubbles of air.
  • One bubble of air is in each of the continuously conveyed plastic tubes P,, P 2 , P 3 , and P 4 .
  • roller pair 57 reciprocated upwardly and downward and roller pair 58 intermittently advance, the continuous advance through roller pair 56 is buffered by the motion of roller pair 57 enabling drive rollers 58 to intermittently advance conveyed plastic tubes P P 2 , P 3 , and P 4 .
  • drive rollers 58 are shown intermittently advancing conveyed plastic tubes P t , P 2 , P 3 , and P 4 .
  • Such intermittent advance occurs under control of optical heads 0,, 0 2 , 0 3 and 0 4 .
  • the respective intermittently conveyed plastic tubes Pj, P 2 , P 3 , and P 4 are passed in controlled lengths under sealing and severing assembly 80.
  • partial packets of bags K,, K 2 , K 3 , and K 4 are being assembled against a barrier 90 (only partially shown in Fig. 2) .
  • Respective bags 61 - 64 are shown being advanced under rotation flapper/drivers 71 - 74 to add another bag to the respective partial packet of bags K,, K 2 , K 3 , and K 4 . This addition occurs at each partial packets of bags K,, K 2 , K 3 , and K 4 .
  • Such sealing and severing occurs at knife assembly 80 and can more fully be understood with respect to the cartoon series of Figs. 3A - 3D.
  • bag 64 is being intermittently advanced. Such an intermittent advance occurs until the end of bag 64 registers adjacent to wall 90 and roller 58 stops driving bags 61 - 64 responsive to the optical head 0. It will be observed in the view of Fig. 3A, that knife assembly K is retracted upwardly so that bag 64 (and remaining bags 61 - 63) pass under the assembly K.
  • sealing bar 94 descends and fuses the bag front wall, rear wall and gussets into a single unitary bag bottom. This bag bottom will eventually be registered adjacent to wall 90 when the next in order bag 64 is advanced. Preferably, no part of bag 64 actually contacts wall 90; instead, movement of bag 64 ceases short of the wall.
  • pin 102 is a retractable pin mounted in a bore 100. Normally pin 102 is in the up position. A bar 96 registers down and over pin 102 as each bag is stacked. Such pin registry occurs at the outside upper corners of bag 64 where the so-called dual tab of the bag will be ultimately made. Further, pins can be intermittently place across the opening of the bag.
  • Fusing plugs 98 are here shown supplied to bar 96. As each bag is separately stacked, fusing plug 98 fuses the bag in the vicinity of the future tabs. Thus, the bag packets — as they are formed — are fused in immediate alignment immediately after they are deposited on their respective packet K. Stopping here, a word may be mentioned about the alignment at this juncture. It is critical that the open tops of bags 64 be correctly aligned. This is required so that bag packets K l r K 2 , K 3 , and K 4 can be simultaneously moved together and cut at their registered upper and open ends. While some misalignment may occur at the bag bottoms, the reader will understand that correct registry of the bag packets at the open top of the bags is critical.
  • Finger assembly F 4 has respective fingers 93, 94 in the open position. Fingers 94 advance in a trough 92 so that grasping of packet K 4 can occur under the packet at the respective registered bag bottoms.

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  • Making Paper Articles (AREA)

Abstract

Machine modifiée utilisée pour fabriquer des sachets, comprenant des broches (102) d'empilement rétractibles adjacentes aux extrémités ouvertes et soudées des sachets (64). Un sachet s'avance sous des systèmes de déviation (74) et s'empile sur les sacs situés juste au-dessous. Lorsque le nombre de sachets prévu pour un paquet (K4) est atteint, des doigts préhenseurs (93, 94) enlèvent le paquet de la zone d'empilement pour le transporter vers d'autres opérations.
PCT/US1992/002920 1992-01-09 1992-04-08 Procede et appareil permettant de fabriquer des sachets a deux languettes pour le commerce WO1993013936A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US81577192A 1992-01-09 1992-01-09
US815,771 1992-01-09

Publications (1)

Publication Number Publication Date
WO1993013936A1 true WO1993013936A1 (fr) 1993-07-22

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ID=25218779

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/002920 WO1993013936A1 (fr) 1992-01-09 1992-04-08 Procede et appareil permettant de fabriquer des sachets a deux languettes pour le commerce

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CA (1) CA2061854A1 (fr)
WO (1) WO1993013936A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1008447C2 (nl) * 1998-03-02 1999-09-03 Patchville Corp N V Inrichting voor het vervaardigen en verpakken van polyethyleenzakken, in het bijzonder voor gebruik bij het invriezen van voedsel.
EP1036741A3 (fr) * 1999-03-17 2000-12-06 LEMO Maschinenbau GmbH Pile de sacs ainsi que son procédé et dispostif de fabrication et de remplissage
US6793613B2 (en) 2001-02-16 2004-09-21 Hudson-Sharp Machine Co. Bag blocks
NL1029173C2 (nl) * 2005-06-02 2006-12-05 Smq Group B V Vouwbare voering voor gebruik in een houder.
US7980410B2 (en) 2002-09-05 2011-07-19 Smq Group B.V. Foldable bag and combination of a container and a bag and method for the use of this combination
US10377549B2 (en) 2009-04-29 2019-08-13 Scholle Ipn Corporation Foldable bag and a method of manufacturing a foldable bag

Citations (10)

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US4181069A (en) * 1978-04-28 1980-01-01 Chase Bag Company Method for producing double streams of side-welded bags in heat-welded pad form
US4195960A (en) * 1977-10-18 1980-04-01 Karl-Heinz Stiegler Conveyor with downward step for stacked sheets of film material
US4342564A (en) * 1979-06-15 1982-08-03 Hans Lehmacher Apparatus for the stacking and connection of synthetic-resin foil bags
US4512757A (en) * 1982-01-16 1985-04-23 M. Lehmacher & Sohn Gmbh Maschinenfabrik Double-seam bag-making method and apparatus with offset stacking
US4516895A (en) * 1982-04-05 1985-05-14 Alpine Plastics Machinery Limited Bag forming machines of the top stacking type with stack clamp
US4526565A (en) * 1983-02-23 1985-07-02 Linear Films, Inc. Method of making flat bottom plastic bag
US4699607A (en) * 1985-11-06 1987-10-13 Fmc Corporation Method and apparatus for producing bags
US4790803A (en) * 1987-06-30 1988-12-13 T. C. Manufacturing Company, Inc. Method of making bottom gusset bag pad arrangement for liquid containers
US4995860A (en) * 1990-01-31 1991-02-26 Sonoco Products Company Easy opening bag pack and supporting rack system and fabricating method
US5030191A (en) * 1987-02-14 1991-07-09 Hans Reifenhauser Device for depositing and stacking bags produced from synthetic resin films and having a bottom seam

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195960A (en) * 1977-10-18 1980-04-01 Karl-Heinz Stiegler Conveyor with downward step for stacked sheets of film material
US4181069A (en) * 1978-04-28 1980-01-01 Chase Bag Company Method for producing double streams of side-welded bags in heat-welded pad form
US4342564A (en) * 1979-06-15 1982-08-03 Hans Lehmacher Apparatus for the stacking and connection of synthetic-resin foil bags
US4512757A (en) * 1982-01-16 1985-04-23 M. Lehmacher & Sohn Gmbh Maschinenfabrik Double-seam bag-making method and apparatus with offset stacking
US4516895A (en) * 1982-04-05 1985-05-14 Alpine Plastics Machinery Limited Bag forming machines of the top stacking type with stack clamp
US4526565A (en) * 1983-02-23 1985-07-02 Linear Films, Inc. Method of making flat bottom plastic bag
US4526565B1 (fr) * 1983-02-23 1989-02-14 Linear Films Inc
US4699607A (en) * 1985-11-06 1987-10-13 Fmc Corporation Method and apparatus for producing bags
US5030191A (en) * 1987-02-14 1991-07-09 Hans Reifenhauser Device for depositing and stacking bags produced from synthetic resin films and having a bottom seam
US4790803A (en) * 1987-06-30 1988-12-13 T. C. Manufacturing Company, Inc. Method of making bottom gusset bag pad arrangement for liquid containers
US4995860A (en) * 1990-01-31 1991-02-26 Sonoco Products Company Easy opening bag pack and supporting rack system and fabricating method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1008447C2 (nl) * 1998-03-02 1999-09-03 Patchville Corp N V Inrichting voor het vervaardigen en verpakken van polyethyleenzakken, in het bijzonder voor gebruik bij het invriezen van voedsel.
EP1036741A3 (fr) * 1999-03-17 2000-12-06 LEMO Maschinenbau GmbH Pile de sacs ainsi que son procédé et dispostif de fabrication et de remplissage
US6793613B2 (en) 2001-02-16 2004-09-21 Hudson-Sharp Machine Co. Bag blocks
US7980410B2 (en) 2002-09-05 2011-07-19 Smq Group B.V. Foldable bag and combination of a container and a bag and method for the use of this combination
NL1029173C2 (nl) * 2005-06-02 2006-12-05 Smq Group B V Vouwbare voering voor gebruik in een houder.
WO2006130008A3 (fr) * 2005-06-02 2007-04-05 Smq Group B V Procede de fabrication d'un sac pliable et sac pliable ainsi fabrique
US9278496B2 (en) 2005-06-02 2016-03-08 Scholle Corporation Method of manufacturing a foldable bag and a foldable bag
US10377549B2 (en) 2009-04-29 2019-08-13 Scholle Ipn Corporation Foldable bag and a method of manufacturing a foldable bag

Also Published As

Publication number Publication date
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