EP2454163B1 - Procédé de fabrication de sacs à cordon de fermeture ainsi que sac à cordon de fermeture - Google Patents

Procédé de fabrication de sacs à cordon de fermeture ainsi que sac à cordon de fermeture Download PDF

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Publication number
EP2454163B1
EP2454163B1 EP10734024.2A EP10734024A EP2454163B1 EP 2454163 B1 EP2454163 B1 EP 2454163B1 EP 10734024 A EP10734024 A EP 10734024A EP 2454163 B1 EP2454163 B1 EP 2454163B1
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EP
European Patent Office
Prior art keywords
foil
draw string
strips
draw
tubular
Prior art date
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Active
Application number
EP10734024.2A
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German (de)
English (en)
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EP2454163A1 (fr
Inventor
Hans Erik Knudsen
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.)
Ulfoss Co Group AS
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Ulfoss Co Group AS
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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Priority to EP10734024.2A priority Critical patent/EP2454163B1/fr
Priority to PL10734024T priority patent/PL2454163T3/pl
Publication of EP2454163A1 publication Critical patent/EP2454163A1/fr
Application granted granted Critical
Publication of EP2454163B1 publication Critical patent/EP2454163B1/fr
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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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/28—Strings or strip-like closures, i.e. draw closures
    • 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
    • B31B2155/00—Flexible containers made from webs
    • 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
    • B31B2155/003—Flexible containers made from webs starting from tubular webs
    • 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
    • B31B70/8135—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
    • 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

Definitions

  • the present invention relates to a method for manufacturing draw string bags, particularly draw string garbage bags, with reinforced draw strings.
  • the present invention also relates to such a draw string bag.
  • Such a method is known from US 3,196,757 in which hems with draw string access means are formed at bag mouth forming margins, the hems being sealed to the body of the bag to form tubular channels enclosing continuous draw strings, generally in the form of ribbons of a suitable material.
  • the draw strings may be formed by cutting thin ribbons of the web material from the bag mouth.
  • a tubular foil with a W-shaped pleat is slit to form a folded web with a hem at each edge by cutting away a bottom portion of the W-shaped pleat, and a draw string with a U-shaped profile is formed from said bottom portion.
  • the object of the present invention is to provide a method for manufacturing draw string bags which method provides a draw string being more robust towards breakage and deformation while using a minimum of material.
  • This object is according to the invention achieved by a method of the abovementioned type, which method comprises the steps of providing a plastic material and extruding the plastic material to a longitudinal tubular foil, cutting longitudinally at least two strips from said tubular foil, thereby providing a U-profiled foil having two legs with an inner side, an outer side and a free cut edge, leading the at least two strips to one of said sides of said legs adjacent the free cut edge, folding the foil adjacent the free cut edges over said strips to form hems and sealing the hems to form tubular channels in which the strips extend, thus forming draw strings, sealing transversely the U-profiled foil to provide a plurality of bags and subjecting a part of the foil to a reinforcing treatment to provide reinforced strips and thus form reinforced draw strings wherein the reinforcing treatment comprises any one or more of longitudinally sealing said strips to form tubular draw strings and providing a part of the tubular foil and/or the strips with one or more substantially longitudinal, transversal and/or inclined welds to provide for
  • Such a method provides for draw string bags comprising stronger draw strings that are considerably less prone to breakage or deformation and are thus considerably easier to manipulate. Also, such a method provides for achieving such draw strings without the addition of any extra material to the foil, thus keeping the amount of material used on a minimum.
  • the method according to the invention is mass-conserving in that it provides reinforced draw strings while keeping the mass of the draw strings substantially constant.
  • a reinforcing treatment comprising any one or more of sealing said strips to form tubular draw strings and providing a part of the tubular foil and/or the strips with one or more substantially longitudinal, transversal and/or inclined welds to provide for strengthening of the draw strings the draw strings thus formed are provided with additional strength, and thus perform better when closing a bag.
  • the sealing of the strips is performed by cutting the strips with a sealing knife, whereby the cutting and the sealing of the strips may be performed simultaneously.
  • the welds are provided by leading a heated wheel across a part of the tubular foil and/or across the whole or a part of the strips, thereby providing said welds in a particularly simple and straight-forward manner.
  • the method further comprises the step of punching at least one hole or at least one perforation in the material of the foil, to provide for pulling the draw string when closing a bag, which provides for easy access to the draw string when it is desired to close a bag.
  • the plastic material is a polyolefin, such as a polypropylene or a polyethylene, this material being particularly convenient and easy to manipulate in a method according to the invention.
  • a continuous line of draw string bags are produced, each two bags being separated by a weakened line, thereby providing a method resulting in a row of bags that may be rolled up to form rolls of bags each containing a desired number of bags and being ready for shipping.
  • the method is performed as an in-line method, thereby providing a particularly convenient and time saving method for producing draw string bags.
  • the method further comprises the step of applying a colouring agent of a different colour than that of the foil to the draw string.
  • a colouring agent of a different colour than that of the foil to the draw string.
  • the draw string is made immediately visible to the user, and a draw string bag being easier to use is thus provided.
  • the colouring agent and the colour of the foil may be of mutually contrasting colours.
  • a draw string bag comprising a U-shaped plastic foil providing a closed bottom, an open end and two sealed sides, a hem formed by folding and sealing the foil at the open end onto itself, and a draw string placed in the hem, the draw string being formed by at least two strips of the material of the U-shaped plastic foil, wherein the foil of the draw string has been subjected to a reinforcing treatment, and wherein the reinforcing treatment is one or more of that the draw string is a tubular draw string formed by longitudinally sealing said strips and that the draw string comprises one or more substantially longitudinal, transversal and/or inclined welds extending over the whole or a part of the draw string.
  • draw string bag which comprises stronger draw strings that are considerably less prone to breakage or deformation and are thus considerably easier to manipulate, the bag being produced using a minimum of material.
  • the result of the reinforcing treatment is one or more of that the draw string is a tubular draw string and that the draw string comprises one or more substantially longitudinal, transversal and/or inclined welds extending over the whole or a part of the draw string.
  • the draw string is provided with additional strength and thus performs better when closing the bag.
  • the bag further comprises at least one hole or at least one perforation in the material of the foil, the hole or the perforation being adapted for pulling the draw string when closing a bag, thereby providing a bag with easy access to the draw string when it is desired to close it, the bag thus being more convenient to use for the end user.
  • tubular plastic foil is a polyolefin, such as a polypropylene or a polyethylene, this material providing for particularly well functioning bags.
  • the draw string comprises a colouring agent of a different colour than that of the foil, thereby providing for an immediately visible draw string.
  • FIG. 1 With reference to fig. 1 an embodiment of a method for manufacturing draw string bags, and particularly draw string garbage bags, according to the invention is shown. The illustration features the main steps of the method according to the invention.
  • a plastic material is provided, generally in the form of granulate. This step is not shown in the figures.
  • any suitable plastic material being suitable for processing into a thin, flexible and strong foil may be used.
  • the plastic material may be heat welded.
  • the plastic material is a polyolefin, such as a polypropylene or a polyethylene, where suitable polyethylenes comprise high density (HD) polyethylene, low density (LD) polyethylene and linear low density (LLD) polyethylene.
  • the material may be a biologically degradable plastic or a bioplastic.
  • the plastic material is extruded into a thin tubular plastic foil 2 by the use of a suitable extrusion process.
  • FIG. 2A An exemplary cross section of an extruded tubular foil is shown in fig. 2A showing the tubular foil as flattened as would likewise be the case during the manufacturing process.
  • step 104 cf. fig. 2B , at least two strips 10, 11 are cut longitudinally, i.e. parallel with the direction of feed indicated by arrow 15 in fig. 1 of the foil, from the tubular foil 2, whereby a U-profiled foil 3 having two legs each comprising an inner side 16 an outer side 17 and a free cut edge 18 is provided - cf. fig. 2C .
  • the cutting process of step 104 is preferably performed using a sealing knife, such as for instance a so called slit sealer, which is a knife that may be heated on one or both sides to perform simultaneous cutting and sealing of a plastic foil.
  • a sealing knife such as for instance a so called slit sealer, which is a knife that may be heated on one or both sides to perform simultaneous cutting and sealing of a plastic foil.
  • the first sealing knife 20 is insulated on the side facing towards strip 11 and heated on the side facing towards strip 10, while the second sealing knife 21 is insulated on both sides (hence the second sealing knife 21 might in this method in principle be substituted with a suitable ordinary knife), thus providing the draw string 9 shown in fig. 2C and 2D having a U-shaped cross section.
  • the first sealing knife 20 is heated on both sides, while the second sealing knife 21 is heated on the side facing towards strip 10 and insulated on the side facing opposite strip 10.
  • This configuration provides a draw string 9 with a tubular cross section as shown in fig. 3A .
  • Such a draw string has the benefit of increased strength as compared to the previously described draw string with a U-shaped cross section.
  • any combination of heated and insulated sides of the two sealing knifes 20, 21 is feasible as long as one condition is fulfilled, namely that the side of the second sealing knife 21 facing opposite string 10 should always be insulated to ensure that the opening formed between the free cut edges 18 of the bag is not sealed.
  • the draw string 9 may comprise one or more substantially longitudinal, reinforcing welds (not shown) that are preferably placed in a distance form the edge of the draw string.
  • a reinforcing weld may e.g. be punctual, linear with interruptions or continuous, and is preferably provided by means of a heated wheel that is lead across the strips 10, 11 or a longitudinal section of the tubular foil 2 subsequently being cut in step 104 to form the strips 10, 11.
  • a wheel that may be heated, may also be used as an alternative to the above mentioned sealing knifes, particularly when the wheel additionally is adapted to be able to cut.
  • the reinforcing welds may be transversal or extend inclined or diagonally across the strips 10, 11 or a longitudinal section of the tubular foil 2 subsequently being cut in step 104 to form the strips 10, 11.
  • the reinforcing welds may join together the legs of the U-shaped draw string, thereby providing the draw string with areas having substantially twice the thickness of material of the tubular foil.
  • step 106 the two strips 10, 11 are lead on one of the sides, e.g. either outer side 17 or either inner side, of the legs of the U-profiled foil 3 adjacent the free cut edges 18 (cf. fig. 2C ).
  • FIG. 3B Another draw string configuration, which, however, is not an embodiment of the present invention, is shown in fig. 3B featuring a twisted draw string 9.
  • the twisting of the draw string 9 may with advantage, whether the draw string 9 be tubular or U-shaped in cross section, be performed by twisting the two strips 10, 11 during step 106 as a part of the step of leading the strips 10, 11 on one of the sides, e.g. either outer side 17 or either inner side, of the legs of the U-shaped foil 3.
  • Such a twisting is another way of increasing the strength of the draw string 9.
  • step 106 the foil adjacent the free cut edges 18 is in step 108, cf. also fig. 2D , folded over the strips 10, 11 to form hems 8.
  • step 110 cf. also fig. 2E , sealed to form tubular channels 19 in which the strips 10, 11 extend, the strips thus forming draw strings 9.
  • the tubular foil 2 is as shown in fig. 1 provided with holes 12 for, during use of the final bag, pulling the draw string when it is desired to close the bag.
  • Such holes 12 are generally punched in the foil along its longitudinal axis, i.e. the direction indicated by arrow 15 of fig. 1 , of the foil in regular intervals, thus providing at least one hole for each final draw string bag.
  • the foil 2 may be provided with perforations (not shown) serving the same general purpose by facilitating access to the draw string.
  • perforations may in principle be provided to the plastic foil at any point in the manufacturing process, but are preferably provided prior to or during step 104 or alternatively at some point during or after step 110.
  • the U-profiled foil 3 is in an un-illustrated step sealed transversely, i.e. substantially perpendicular to the direction of feed indicated by arrow 15 in fig. 1 , in suitable intervals to provide a plurality of bags of a desired width.
  • the depth of the bags is consequently determined by the diameter of the initially extruded tubular plastic foil 2.
  • the transverse sealing may be provided with a weakened line, such as for instance a row of perforations, separating each two bags, such that a continuous line of draw string bags may be produced.
  • the method according to the invention may be performed as an off-line method, i.e. performing the initial extrusion and the subsequent profiling of the extruded foil (steps 104 - 110 plus abovementioned final steps) separately, for instance by winding the extruded foil on a roll and providing a profiling machine with the thus produced roll of foil.
  • the method is performed as an in-line method, thus performing the whole manufacture from extrusion to final bags on one production line.
  • Each of the bags 1 comprises a U-shaped plastic foil 3 with a closed bottom 4, an open end 5 and two sealed sides 6, 7.
  • Each bag 1 furthermore comprises a hem 8 being formed by folding and sealing the foil 3 onto itself at the open end 5.
  • a draw string 9 is placed in the hem 8 of each bag 1.
  • the hem 8 is placed externally on the U-shaped plastic foil 3, and the draw string 9 is formed by at least two strips of the material of said U-shaped plastic foil 3.
  • the draw string 9 may, as described above, in preferred embodiments be tubular and/or comprise one or more reinforcing welds.
  • each bag comprises at least one hole 12 adjacent the open end 5 intended for pulling the draw string 9 when the end user desires to close the bag 1.
  • the hem 8 may be placed internally on the U-shaped plastic foil 3.
  • the difference between the bags 1 shown in figs. 4, 5 and 6 lies in the positioning of the holes 12.
  • the bag 1 shown in fig. 4 comprises one hole 12 positioned substantially midways between the sealed sides 6, 7. This embodiment is the least preferred of the embodiments shown.
  • the bag 1 shown in fig. 5 also comprises one hole 12, but in this embodiment the hole is positioned adjacent the sealed side 7 such that the hole 12 is intended to extend with one part, preferably half, of its cross section on the bag 1 shown in fig. 5 and the other part, preferably other half, on a bag adjacent the bag 1 at the sealed side 7. Obviously the hole 12 might as well have been placed adjacent the opposite sealed side 6.
  • the hole 12 in the bag 1 is placed similar to that in fig. 5 , only there is provided a hole 12 at each sealed side 6, 7.
  • the hole 12 may be placed in a distance form the open end 5, such that a piece, e.g. of 0,5 to 1,5 cm, of the sealed side 6 or 7 separate the hole 12 and the open end 5. Thereby is provided an improved guidance of the draw string 9 through the hole 12 when pulling the draw string 9.
  • the hole or holes 12 may be substituted for perforations serving the same purpose as the hole(s) 12 by allowing the area delimited by the perforations to be torn off to provide access to the draw string 9 for closing the bag 1.
  • perforations may for instance be a straight or curved row of perforations.
  • the draw string 9 may be perforated along the same lines as the perforations substituting the holes 12, thus enabling provision of the perforations during or after the abovementioned step 110 (for instance simultaneously with providing the abovementioned transverse sealing with a weakened line) of the method according to the invention.
  • the part of the draw string 9 extending within the area delimited by the row of perforations may also be torn off when tearing off said area delimited by the perforations. This latter possibility is mostly usable in the embodiments shown in fig. 5 and 6 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
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Claims (12)

  1. Procédé pour fabriquer des sacs à cordon comportant les étapes consistant :
    à fournir une matière plastique,
    à extruder la matière plastique sous la forme d'une feuille tubulaire longitudinale (2),
    à couper (104) longitudinalement au moins deux bandes (10, 11) à partir de ladite feuille tubulaire (2), ce qui permet de produire une feuille profilée en U (3) comportant deux pattes ayant un côté interne (16), un côté externe (17) et un bord de coupe libre (18),
    à amener (106) les deux, ou plus, deux bandes (10, 11) sur l'un desdits côtés (16, 17) desdites pattes à proximité du bord de coupe libre (18),
    à plier (108) la feuille à proximité des bords de coupe libre sur lesdites bandes de façon à former des ourlets (8) et à sceller les ourlets de façon à former des canaux tubulaires (19) dans lesquels s'étendent les bandes, ce qui permet de former des cordons (9),
    à sceller (110) transversalement la feuille profilée en U de façon à produire une pluralité de sacs, et
    à soumettre une partie de ladite feuille tubulaire (2) à un traitement de renforcement afin de produire des bandes renforcées (10, 11) et à former ainsi des cordons renforcés (9), dans lequel ledit traitement de renforcement comprend une quelconque ou plusieurs étapes consistant à sceller longitudinalement lesdites bandes (10, 11) de façon à former des cordons tubulaires (9) et à fournir une partie de ladite feuille tubulaire (2) et/ou les bandes (10, 11) ayant une ou plusieurs soudures sensiblement longitudinales, transversales et/ou inclinées de façon à prévoir un renforcement des cordons (9).
  2. Procédé selon la revendication 1, caractérisé en ce que ledit scellement desdites bandes (10, 11) est effectué en découpant lesdites bandes avec un couteau de scellement (20, 21).
  3. Procédé selon la revendication 1, caractérisé en ce que lesdites soudures sont réalisées en amenant une roue chauffée d'un côté à l'autre de ladite partie de ladite feuille tubulaire (2) et/ou d'un coté à l'autre de la totalité ou d'une partie desdites bandes (10, 11).
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend en outre l'étape consistant à faire au moins un trou (12) ou au moins une perforation dans le matériau de ladite feuille de façon à prévoir la traction dudit cordon (9) lors de la fermeture d'un sac.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite matière plastique est une polyoléfine, telle qu'un polypropylène ou un polyéthylène.
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une ligne continue de sacs à cordon est produite, chaque paire de sacs étant séparée par une ligne affaiblie.
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il est réalisé sous la forme d'un procédé en ligne.
  8. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend en outre l'étape consistant à appliquer un agent colorant d'une couleur différente de celle de la feuille (2 ou 3) audit cordon (9).
  9. Sac à cordon (1) comprenant une feuille plastique en forme de U (3) fournissant un fond fermé (4), une extrémité ouverte (5) et deux côtés scellés (6, 7), un ourlet (8) formé en pliant et en scellant la feuille au niveau de ladite extrémité ouverte sur elle-même, et un cordon (9) placé dans ledit ourlet, ledit cordon (9) étant formé par au moins deux bandes (10, 11) du matériau de ladite feuille plastique en forme de U (3), dans lequel la feuille dudit cordon (9) a été soumise à un traitement de renforcement, caractérisé en ce que le résultat du traitement de renforcement est que le cordon (9) est un cordon tubulaire formé en scellant longitudinalement lesdites bandes (10, 11) et/ou que le cordon (9) comprend une ou plusieurs soudures sensiblement longitudinales, transversales et/ou inclinées s'étendant sur la totalité ou une partie du cordon (9).
  10. Sac selon la revendication 9, caractérisé en ce qu'il comprend en outre au moins un trou (12) ou au moins une perforation dans le matériau de ladite feuille, ledit trou étant conçu, ou ladite perforation étant conçue, pour tirer ledit cordon (9) lors de la fermeture du sac (1).
  11. Sac selon l'une quelconque des revendications 9 à 10, caractérisé en ce que la feuille plastique tubulaire (2) est une polyoléfine, telle qu'un polypropylène ou un polyéthylène.
  12. Sac selon l'une quelconque des revendications 9 à 11, caractérisé en ce que ledit cordon (9) comprend un agent colorant d'une couleur différente de celle de la feuille (3).
EP10734024.2A 2009-07-15 2010-07-13 Procédé de fabrication de sacs à cordon de fermeture ainsi que sac à cordon de fermeture Active EP2454163B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10734024.2A EP2454163B1 (fr) 2009-07-15 2010-07-13 Procédé de fabrication de sacs à cordon de fermeture ainsi que sac à cordon de fermeture
PL10734024T PL2454163T3 (pl) 2009-07-15 2010-07-13 Sposób wytwarzania worków ze sznurkiem do ciągnięcia, a także worek ze sznurkiem do ciągnięcia

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09165531A EP2275356A1 (fr) 2009-07-15 2009-07-15 Procédé de fabrication de sacs à cordon de fermeture
EP10734024.2A EP2454163B1 (fr) 2009-07-15 2010-07-13 Procédé de fabrication de sacs à cordon de fermeture ainsi que sac à cordon de fermeture
PCT/DK2010/050185 WO2011006505A1 (fr) 2009-07-15 2010-07-13 Procédé de fabrication de sacs à cordon

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EP2454163A1 EP2454163A1 (fr) 2012-05-23
EP2454163B1 true EP2454163B1 (fr) 2018-01-24

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EP09165531A Withdrawn EP2275356A1 (fr) 2009-07-15 2009-07-15 Procédé de fabrication de sacs à cordon de fermeture
EP10734024.2A Active EP2454163B1 (fr) 2009-07-15 2010-07-13 Procédé de fabrication de sacs à cordon de fermeture ainsi que sac à cordon de fermeture

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EP09165531A Withdrawn EP2275356A1 (fr) 2009-07-15 2009-07-15 Procédé de fabrication de sacs à cordon de fermeture

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EP (2) EP2275356A1 (fr)
DK (1) DK2454163T3 (fr)
ES (1) ES2667023T3 (fr)
PL (1) PL2454163T3 (fr)
WO (1) WO2011006505A1 (fr)

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EP2818499B1 (fr) 2012-02-20 2022-01-12 Mitsubishi Chemical Corporation Composition de résine et corps moulé de ladite composition
CN104170235B (zh) 2012-03-12 2016-12-07 三菱电机株式会社 功率转换装置
FR3021034B1 (fr) * 2014-05-15 2017-05-12 S2F Flexico Machine de formage-remplissage-scellage pour sachet a ruban
WO2016060203A2 (fr) * 2014-10-17 2016-04-21 株式会社ワンワールド Procédé de fabrication de sac, et sac portable
JP2016078359A (ja) * 2014-10-17 2016-05-16 株式会社ワンワールド 袋体の製造方法
CN109822973B (zh) * 2019-04-10 2020-05-12 杭州富阳华美五金塑料厂 一种用于垃圾袋生产的点断式切口设备
CN110126350A (zh) * 2019-06-19 2019-08-16 蔡明� 束口垃圾袋成型装置及其生产工艺
EP3967486A1 (fr) * 2020-09-14 2022-03-16 Schur Flexibles Poland Sp. z o.o Procédé de fabrication d'un sac pour des produits d'hygiène
CN117698202B (zh) * 2023-12-19 2024-07-02 浙江正信机械有限公司 一种穿绳无纺布袋制作方法

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DE1704398A1 (de) * 1967-07-31 1971-09-02 Gottlieb Wiedmann Kg Verfahren und Vorrichtung zum Herstellen von Kunststoffbeuteln mit Schliesszeug
US3772968A (en) * 1972-07-21 1973-11-20 Bagcraft Corp Method of making draw band closure bags
DE3821905C1 (fr) * 1988-06-29 1990-02-08 Stiegler Gmbh Maschinenfabrik, 7062 Rudersberg, De
US5057065A (en) * 1989-12-08 1991-10-15 Reynolds Metals Company Process for making draw tape bags with integrally formed draw tapes

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ES2667023T3 (es) 2018-05-09
PL2454163T3 (pl) 2018-09-28
EP2454163A1 (fr) 2012-05-23
DK2454163T3 (en) 2018-05-14
WO2011006505A1 (fr) 2011-01-20

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