EP0348823B1 - Verfahren und Vorrichtung zum Herstellen von Beuteln mit Zugbändern aus thermoplastischer Kunststoffolie - Google Patents

Verfahren und Vorrichtung zum Herstellen von Beuteln mit Zugbändern aus thermoplastischer Kunststoffolie Download PDF

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Publication number
EP0348823B1
EP0348823B1 EP89111383A EP89111383A EP0348823B1 EP 0348823 B1 EP0348823 B1 EP 0348823B1 EP 89111383 A EP89111383 A EP 89111383A EP 89111383 A EP89111383 A EP 89111383A EP 0348823 B1 EP0348823 B1 EP 0348823B1
Authority
EP
European Patent Office
Prior art keywords
web
drawstrings
welding
folding
foil
Prior art date
Legal status (The legal status 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 status listed.)
Revoked
Application number
EP89111383A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0348823A2 (de
EP0348823A3 (de
Inventor
Robert Wagner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STIEGLER GmbH MASCHINENFABRIK
Original Assignee
STIEGLER GmbH MASCHINENFABRIK
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
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Application filed by STIEGLER GmbH MASCHINENFABRIK filed Critical STIEGLER GmbH MASCHINENFABRIK
Publication of EP0348823A2 publication Critical patent/EP0348823A2/de
Publication of EP0348823A3 publication Critical patent/EP0348823A3/de
Application granted granted Critical
Publication of EP0348823B1 publication Critical patent/EP0348823B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/813—Applying closures
    • B31B70/8134—Applying strings; Making string-closed bags
    • B31B70/8135—Applying strings; Making string-closed bags the strings being applied in the machine direction
    • 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
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/001—Flexible containers made from webs by folding webs longitudinally
    • 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
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/001—Flexible containers made from webs by folding webs longitudinally
    • B31B2155/0014—Flexible containers made from webs by folding webs longitudinally having their openings facing transversally to the direction of movement
    • 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
    • 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
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/813—Applying closures
    • B31B70/8134—Applying strings; Making string-closed bags
    • B31B70/8137—Applying strings; Making string-closed bags the ends of the strings being attached to the side edges of the 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
    • B31B70/94—Delivering singly or in succession
    • B31B70/946—Delivering singly or in succession the bags being interconnected

Definitions

  • the invention relates to a method for producing bags with drawstrings, in which, in the case of a flat sheet of thermoplastic plastic film, one access hole is punched at intervals corresponding to the width of the bag, and the film edges run approximately centrally through the access hole to form a hem envelope inwards or outwards are folded over, at least one drawstring made of a material that can be welded to the plastic film is continuously inserted into each hem envelope, the hem envelopes are continuously welded to the adjacent web side to form a cavity for the drawstring and the side weld seams of the bags transversely to the longitudinal extent of the web by means of separating welding or Double-seam welding with an intermittent cutting line in between, the access hole being arranged in particular in the center,
  • the invention also relates to a machine for producing bags with drawstrings.
  • Bags with drawstrings are known for example from DE-A-15 32 846. Such bags are not only suitable as carrier bags but, with the appropriate dimensions and size, also for example as garbage bags, the drawstrings not only being used for carrying but also for closing after filling by knotting.
  • a tote bag with a drawstring with a high load capacity is known, in which the drawstring was made in two or more layers by folding a flat film, the superimposed film layers being welded to one another at the overlapping edges.
  • the invention is based on the task of further developing generic methods for producing bags with drawstrings in order to enable continuous production with high production speed, as far as possible, whereby it should be assumed that the tubular or single-layer web is laid flat. Tension straps with a high load capacity are also to be manufactured economically.
  • the object for producing bags with drawstrings is achieved by developing the generic method with the characterizing features of claim 1.
  • a relatively thin film By folding the film strip into a double-layer drawstring, a relatively thin film can be used which, by folding to twice the thickness, is given increased load-bearing capacity and tensile strength and resilience as a drawstring.
  • two double-layer drawstrings are made continuously from a foil strip by C-shaped folding in the longitudinal extent and then cut open in the middle and are inserted during or after the folding of the hem envelopes.
  • the invention enables the use of a relatively wide roll of film tape for the production and feeding of the drawstrings, and due to the width of the film tape, the unwinding roll can be made so large that it has a running meter number corresponding to the large roll for the wound web (tubular web) or . can have, so that a simultaneous roll change for the web and the film strip is possible.
  • the unwinding roll can be made so large that it has a running meter number corresponding to the large roll for the wound web (tubular web) or . can have, so that a simultaneous roll change for the web and the film strip is possible.
  • the final widths of the double-layer drawstrings of approximately 2 to 3 cm are achieved. It is not necessary to weld or glue the folded drawstrings together, because due to their width they lie perfectly in the hemstitch and are further welded and fixed in the area of the side weld seams with the bag film.
  • the film strips for the drawstrings can have a thickness of 20 to 50 ⁇ . They are
  • Single-layer or multilayer films made of, in particular, weldable thermoplastic materials can be used for both the drawstrings and the bag film. Another possibility of producing folded drawstrings in a simple, economical manner and processing them into bags with drawstrings can be gathered from the features of claim 2.
  • the drawstrings are made in-line from the films for the bags and their strength and resilience are increased by doubling.
  • This method is suitable for multilayer films of small thickness, e.g. 30 ⁇ , which then result in double tension bands of 60 ⁇ .
  • the method is preferably used as a starting material when the single-layer web is laid flat.
  • the variants of the method according to the invention can also be used to lay a flat tubular web which is cut open on one side and in which the access holes and ventilation holes are likewise punched before the film edges are folded over.
  • the access holes are preferably provided in the middle of a bag width, and with such a distance from the edge of the tube sheet that the folded edge passes through the middle of the hole when the hem envelope is folded over.
  • the ventilation opening is arranged in such a way that it remains inside or outside when the hem is turned inwards or outwards and is welded inside the cavity, in the vicinity of the side edge of the bag, which means the end of the bag in the transport direction.
  • the ventilation opening known per se (DE-U-8 716 803) has the sense that when bag chains are being manufactured, the air that is present when winding up in the hem envelope with the drawstring and penetrating through the access hole can escape before the final side weld seam of the respective bag.
  • a machine for producing bags with drawstrings from thermoplastic film has the features of claim 4.
  • the starting material is either a single-ply or double-ply web.
  • a tubular web which may already have been cut open on one side, or by folding a flat film over to form the semi-tubular web or tubular web with an opening edge on one side, can be provided.
  • the machine according to the invention enables both the production of individual bags with drawstrings, which can subsequently be collected and packaged into stacks, or the production of bag chains, which can then be wound up into small rolls of bags.
  • An advantageous device for producing bag chains in connection with the machine according to the invention can be gathered from the features of claim 5.
  • An advantageous embodiment for the production and supply of tension tape is characterized by a continuous tape unwinding device with an unwinding roll for the tape, a folding device for C-shaped folding of the tape and a slicing knife for the continuous cutting of the folded tape into two double-layer tension tapes and a compensation device for the tape tension .
  • This drawstring feed device enables the use of a wide foil strip as the starting material for the drawstrings, i.e. four times as wide as a finished drawstring.
  • the method for producing bags from thermoplastic plastic film is based on a web material H, which is generally present on an unwinding roll 1.
  • the web material H can be in the form of a tube, then, after being pulled off the unwinding roll 1, it is cut open at the edge forming the bag opening in order to form the film edges 33.
  • a bottom fold can optionally be inserted along the bottom folding edge 27 of the web material H.
  • the access hole 25 and the ventilation opening 35 are then continuously punched into the flat-lying double-lane web material H which has been cut open on one side, which is preferably done continuously, ie when the web material runs through Arrow direction.
  • the access holes are provided in the middle of each bag over a width of the bag, and at such a distance from the film edges 33 that when the hem envelope is later folded over, the folded edge runs centrally through the access hole.
  • the shape and size of the access hole can be varied, with hem envelopes of a width of about 4 to 6 cm, access holes with a diameter of 3 to 6 cm are practical.
  • the vent hole 35 which may be relatively small, is to be arranged so that it remains on the outside or inside of the bag when the hem envelope is folded within the hem.
  • the ventilation opening is to be provided at the lateral end of the bag directly in front of the final side weld seam, so that the air enclosed in the hemstitch can escape from it during winding.
  • Access hole 25 and vent opening 35 are punched out simultaneously through both layers of the web material.
  • the film strip 41 is folded in a C-shape after being pulled off the roll 40, so that it is doubled by the two envelopes 43 and then separated by the cut 42 in the middle between the two envelope edges.
  • the two double-ply tapes that have now formed form the drawstrings 26a and 26b for the two hem envelopes 24.
  • the hem envelopes are then folded over the drawstrings, the fold edge of the drawstrings being close to the fold edge 37 of the hem envelopes.
  • the drawstrings are preferably wider than half the access hole, so that they close it and contribute to the stabilization of the film layers during manufacture at high production speeds.
  • the hem envelopes 24 are continuously welded in a linear manner to the respective film layer of the web material H, see longitudinal weld seam 34, for example by heating by means of IR radiators, However, other welding methods can also be used.
  • the weld seam 34 is arranged in such a way that a envelope is formed by the envelopes 24, in which the inserted drawstrings can move freely.
  • the desired bags 20 are then formed by cross-welding the web material H.
  • Endless bag chains 200 can be produced by producing double seams 21, 22 with an intermittent cutting line 23 (row of perforations) therebetween.
  • the bag chains 200 can then be reduced in length by double folding in a C shape, see envelopes U1, 2 and U3, 4, and wound up into handy bag rolls 12.
  • the folding of the bag chains 200 can take place in such a way that the envelopes are non-uniform, so that the edge of the bag opening with the inserted drawstrings is not covered by the second C-fold in order to achieve a certain material compensation in the thickness.
  • FIGS. 9 and 10 is a view of the manufactured Bag 20 and in Figure 10, the sectional view AA shown in Figure 9.
  • the bag 20 can be designed with or without a bottom fold 28.
  • a preferred area of use for the bags 20 is garbage bags or garment bags, in large format, in which the drawstrings 26 can be used not only for carrying but also for binding.
  • Such bags can have widths from 40 to 100 cm and lengths up to 120 cm and more.
  • the method can be carried out fully continuously even without intermittent operation with a corresponding design of the required device parts.
  • 24 double-layer drawstrings 26a, 26b are arranged in the welded-on hem envelopes, the folded edges being on the top, ie on the side of the bag opening.
  • These folded drawstrings 26a, b are welded and fixed to the bag with the side weld seams 21, 22; due to their size, they lie wrinkle-free in the hem envelopes and do not require any additional fixing of their layers to one another.
  • bag chains 200 with bag rolls 12 according to FIG. 1 it is also possible to produce individual bags 20 directly by cross-cut welding, with only one cut-off weld seam, i.e. Cross welding and separating cutting is carried out in place of the double seam with perforation, and the divided individual bags 20 can subsequently be collected into packs, folded and packaged.
  • the machine according to Figures 3 and 4 allows the continuous production of bag chains with bags with drawstrings.
  • the machine On the input side, the machine has the unwinding roll 1 with the web material H, which is continuously drawn off.
  • the unwinding roll 1 is additionally equipped with the pneumatically or electrically operating brake 13.
  • the entire system is stored in an unspecified machine stand or frame.
  • the drawn off hose web H is guided over deflection rollers through an intermediate store 2 with dancer rollers and a web edge control.
  • the tubular web H is horizontally attached to the deflection rollers
  • Cutting device 8 is guided past where tubular webs are cut open on one side to form the bag opening.
  • the perforating device 6 is provided, with punches which can be actuated in cycles for the access hole and the ventilation opening and suction devices for the punched-out parts.
  • the web material is fed to the folding device 3 for the hem envelopes, which is arranged in the stand 300.
  • the device 4 for feeding the drawstrings interacts with the folding device 3.
  • the web material is brought together with the drawstrings now in the hem envelopes via take-off rollers and moved horizontally and fed to the longitudinal welding device 9. To weld the hem envelopes, the two layers of the web must be spread apart again.
  • the longitudinal welding device 9 there is an intermediate layer on the input side of the longitudinal welding device 9, which is arranged between the two layers of the web material and a guide rod 91 is provided on the outside.
  • An analogous arrangement is again provided behind the longitudinal welding stations 92, 93.
  • the web material spread with these rollers is now guided past the longitudinal welding stations 92 and 93, with a seam being welded on in each welding station. This can be done, for example, by heating by means of IR emitters and pressing the hem envelope onto the film layer of the web material by means of welding wheels and counter bearings.
  • the longitudinal welding device 9 is followed by a film web take-off device 7 with take-off rollers.
  • a continuously operating welding device is provided as the welding device 10 for producing the side weld seams of the bags and compartments thereof from the tubular web H.
  • the welding strips are provided for welding double seams, between which an intermittent cutting line is formed as a tear-off perforation by means of a perforation knife or perforation strip.
  • the perforation line is first punched, when the web is guided over a hard roller, and then welded on both sides.
  • bag chains are produced so that the still coherent web leaving the welding device can subsequently be wound up.
  • a removal device 17 for the bag chain is in turn arranged downstream of the welding device, the bag chain being equipped with folding plates 111 and 112 for folding twice C-shaped, one after the other, following deflection rollers.
  • the film length which is reduced in this way in its width, that is to say the bag length, to approximately a quarter is subsequently fed to the intermediate store 15 with a plurality of dancer rolls, which is followed by the winding device 16 for the bag rolls 12.
  • the bag roll is gripped with clamping jaws and pulled away, the tear-off perforation at the end of the wound-up bag chain being severed and the winding can be carried out by retracting the winding roll a new roll of bags.
  • the intermediate store 15 takes action to collect the continuously fed bag chain.
  • the film take-off device 7 can also be followed by an intermittently cyclical welding and separating device, with which the bags with drawstrings are individually separated from the tubular web H by cross-cut welding.
  • the bags can then be transported further by means of a belt transport and folding devices and Packaging devices are supplied or transported to a stacking system by means of a rotor with wing arms.
  • FIGS. 5 to 8 show further details of the folding device 3 for the hem envelopes and feed device 4 for the drawstrings.
  • the feed device 4 according to FIG. 5 is provided for the production and feeding of the drawstrings for the bags according to FIG.
  • the wide film strip 41 is drawn off from the unwinding roll 40 arranged on the machine foundation in the direction of the arrow via deflecting rolls 50, 53 and an edge control 51, 52 and fed to the C-shaped folding device 47.
  • the folded-in band 41a leaving the C-shaped folding device 47 is then guided over deflection rollers 54 to 62, which, however, also have a tensioning and regulating function for the band feed.
  • the cutting device 46 with a knife is arranged on the roller 55 for central continuous cutting of the folded band 41a.
  • the film strip or the pulling strips 26a, 26b, which are guided to the side next to the tubular web H up to this point, are now fed to the inner folding device 3, which is accommodated in the stand 300, by means of a right-angled deflection.
  • the web H which comes from the punch, is guided upwards to the stand 300 via deflection rollers and is deflected vertically downwards via the pair of rollers 66, 67.
  • the rollers 39, 36 are arranged at the same height, but at a distance, over which the two layers H1, H2 of the web are guided separately outwards with spreading, so that at the lower end of the stand by the pair of rollers 68, 69 formed gap are brought together again and pulled off via further deflecting rollers.
  • the two deflection devices 44, 45 for the shoulder-like displacement of the tension belts 26a, b are arranged above the rollers 36, 39 in or before the spreading space formed by spreading the web layers, see also FIG. 6, which shows a schematic representation of the guidance of the drawstrings.
  • the pulling belts 26a, 26b which are now led out in opposite directions from the second deflection device 45, are fed to the individual spread layers H1, H2 of the web in the region in front of the rollers 39, 36, so that they move in the direction from the web layers H1 or H2 with the roller 39 or 36 enter the gap formed and be placed on the sheets.
  • the guide plates and guide rods 38 are arranged on the stand 300, which fold the hem envelopes over the drawstrings as the web layers pass.
  • FIG. 7 schematically shows the double deflection according to FIG. 6 for the drawstrings in a side view.
  • the tension bands 26a, 26b which are fed in parallel one above the other from the outside transversely to the transport direction of the tubular web, are introduced into the folding device 45 and, after being folded over by 90 degrees, are brought out again in opposite directions.
  • FIG. 8 schematically shows a detail of the feed of the film strip, which is designed as a tensioning device for regulating the strip take-off and the speed.
  • This is an oscillating frame 63 which is adjustably attached to the foundation frame via the bearing shaft or bearing axis 64.
  • the frame has on one side two rollers 61, 60 over which the folded band is guided and an adjustable weight 66 in its central region. This allows the tension and controlled feeding of the film band or the tension bands by adjusting the frame and the like the weight can be adjusted.
  • FIG. 11 shows an excerpt of a variant of the method according to FIG. 1.
  • a web H which is a flat film, is assumed here.
  • the holes 35 and 25 are first created with appropriately arranged punching tools (punching).
  • a film strip which is folded in a C-shape as described above and cut into two drawstrings 26a, b, can be fed from one side and along the Foil edges 33 are placed on the web H.
  • the hem envelopes 24 are then folded over the drawstrings as described and welded with longitudinal weld seams 34.
  • the web H is then folded together along the folding edge 27, and then the bags are divided off by cross-welding or cross-cut welding.
  • FIG. 12 shows a further variant for producing the bags with a drawstring starting from a web H as a flat film.
  • One edge fold 80, 81 is first wrapped and then cut off along the film edges 33, see interface 82.
  • the drawstrings 26a, b created in this way are double-layered, C-shaped with folded edge 83 and can be directly in the transport direction of the web H, if necessary can be fed to the bank edges via the buffer and belt control.
  • the edge envelopes 80, 81 have been torn off, the holes 35 and 25 are punched, then the drawstrings 26a, b are placed and the procedure is continued as described in FIG. 11.

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  • Making Paper Articles (AREA)
EP89111383A 1988-06-29 1989-06-22 Verfahren und Vorrichtung zum Herstellen von Beuteln mit Zugbändern aus thermoplastischer Kunststoffolie Revoked EP0348823B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3821905A DE3821905C1 (nl) 1988-06-29 1988-06-29
DE3821905 1988-06-29

Publications (3)

Publication Number Publication Date
EP0348823A2 EP0348823A2 (de) 1990-01-03
EP0348823A3 EP0348823A3 (de) 1991-05-02
EP0348823B1 true EP0348823B1 (de) 1993-12-15

Family

ID=6357505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89111383A Revoked EP0348823B1 (de) 1988-06-29 1989-06-22 Verfahren und Vorrichtung zum Herstellen von Beuteln mit Zugbändern aus thermoplastischer Kunststoffolie

Country Status (3)

Country Link
EP (1) EP0348823B1 (nl)
DE (1) DE3821905C1 (nl)
ES (1) ES2047610T3 (nl)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0700835B1 (de) * 1994-09-08 1998-06-10 LEMO Maschinenbau GmbH Beutel aus thermoplastischer Kunststoffolie
DE4433582A1 (de) * 1994-09-08 1996-03-14 Lemo Maschb Gmbh Beutel aus thermoplastischer Kunststoffolie
DE10151843A1 (de) 2001-10-24 2003-05-08 Lemo Maschb Gmbh Beutel aus thermoplastischer Kunststofffolie
DE10218720B3 (de) * 2002-04-26 2004-02-05 Lemo Maschinenbau Gmbh Zugbandbeutel mit Klebestreifen
DE102004022845A1 (de) * 2004-05-08 2005-12-01 Lemo Maschinenbau Gmbh Verfahren zur Herstellung von Zugbandbeuteln mit dehnbarem Zugband
EP1767462A1 (de) * 2005-09-26 2007-03-28 Valeska Werner Beutelanordnung und Verfahren zur Herstellung einer Beutelanordnung
EP2275356A1 (en) 2009-07-15 2011-01-19 Ulfoss Company Group A/S Method for manufacturing draw string bags
EP3616895A1 (de) * 2018-08-28 2020-03-04 pely-plastic GmbH & Co. KG Verfahren zum herstellen von zugband-müllbeuteln aus folienmaterial und zugband-müllbeutel aus folienmaterial
CN109703104A (zh) * 2019-02-22 2019-05-03 陈爱平 一种用于塑料编织集装袋料口结带的加工装置

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Publication number Priority date Publication date Assignee Title
DE1255469B (de) * 1962-07-31 1967-11-30 Colodense Ltd Verfahren zum kontinuierlichen Herstellen von Zugschnurbeuteln
FR1520961A (fr) * 1967-04-24 1968-04-12 Holweg Const Mec Sac-cabas en matière plastique et son procédé de fabrication
US3568576A (en) * 1967-07-01 1971-03-09 Michael Lehmacher Method of producing carrier bags
NL145814B (nl) * 1970-02-16 1975-05-15 Windmoeller & Hoelscher Inrichting voor het voortbewegen en bewerken van een in langsrichting gevouwen strook materiaal, in het bijzonder voor de vervaardiging van zakken.
NL167926C (nl) * 1970-06-09 1982-02-16 Heijmeijer L J Ver Fab Werkwijze en inrichting voor het vervaardigen van wikkels.
US3871269A (en) * 1970-12-22 1975-03-18 Canadian Ind Bag severing machine
DE2215675B2 (de) * 1972-03-30 1974-04-11 Hans 5216 Niederkassel Lehmacher Tragetasche aus thermoplastischer Kunststoffolie
US4624654A (en) * 1984-09-20 1986-11-25 Mobil Oil Corporation Method and apparatus for manufacturing draw tape bags
US4597750A (en) * 1984-09-20 1986-07-01 Mobil Oil Corporation Insertion of draw tape strips in draw tape bag manufacture
DE8434032U1 (de) * 1984-11-20 1985-03-07 Krauss Kaminwerke München-Geiselbullach GmbH & Co KG, 8037 Olching Isolationskamin mit einer konsole oberhalb der lufteintrittsoeffnung
US4714455A (en) * 1986-06-06 1987-12-22 Mobil Oil Corporation Hem folder with integral tape inserter for making draw tape bags
DE8716803U1 (de) * 1987-12-22 1988-02-18 Stiegler GmbH Maschinenfabrik, 7062 Rudersberg Beutelrolle mit Beuteln aus thermoplastischer Kunststoffolie

Also Published As

Publication number Publication date
DE3821905C1 (nl) 1990-02-08
ES2047610T3 (es) 1994-03-01
EP0348823A2 (de) 1990-01-03
EP0348823A3 (de) 1991-05-02

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