WO2010007848A1 - Procédé de fabrication d'un contenant en forme de sac - Google Patents

Procédé de fabrication d'un contenant en forme de sac Download PDF

Info

Publication number
WO2010007848A1
WO2010007848A1 PCT/JP2009/060846 JP2009060846W WO2010007848A1 WO 2010007848 A1 WO2010007848 A1 WO 2010007848A1 JP 2009060846 W JP2009060846 W JP 2009060846W WO 2010007848 A1 WO2010007848 A1 WO 2010007848A1
Authority
WO
WIPO (PCT)
Prior art keywords
bag
film
protective layer
container
making
Prior art date
Application number
PCT/JP2009/060846
Other languages
English (en)
Japanese (ja)
Inventor
藤田　紫
俊文 棚橋
石坂　公一
Original Assignee
東洋製罐株式会社
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 東洋製罐株式会社 filed Critical 東洋製罐株式会社
Publication of WO2010007848A1 publication Critical patent/WO2010007848A1/fr

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/22—Forming shoulders; Tube formers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/28—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving assembly of non-flat intermediate products which are flattened at a later step, e.g. tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0063—Cutting longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/23—Articles comprising two or more components, e.g. co-extruded layers the components being layers with means for avoiding adhesion of the layers, e.g. for forming peelable layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0625—LLDPE, i.e. linear low density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0633—LDPE, i.e. low density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0641—MDPE, i.e. medium density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/065—HDPE, i.e. high density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/10—Removing layers, or parts of layers, mechanically or chemically
    • B32B38/105—Removing layers, or parts of layers, mechanically or chemically on edges

Definitions

  • the present invention relates to a method for manufacturing a bag-like container formed by bag-making a flexible material such as a resin film.
  • a bag-like container manufactured by bag-making a flexible material such as a resin film is known.
  • This type of bag-like container is widely used for storing various articles in various fields. Some of these are used for applications that require a high level of cleanliness, such as pharmaceuticals and precision electronic components. In this case, the content of foreign matter such as dust It is desirable to prevent contamination of things.
  • Patent Document 1 proposes that a molded synthetic resin blown film is used as a base film, and the inside of the blown film is made into a bag shape with the blown films in close contact with each other. . Manufacturing a bag-like container in this way is said to be effective in preventing foreign matter from adhering or mixing during film forming or container manufacturing.
  • the present invention has been made on the basis of the above-described knowledge, and in manufacturing a bag-like container using a tube-shaped film formed by inflation, it is wound into a roll during the manufacturing process. However, it aims at providing the manufacturing method of the bag-shaped container which does not have trouble in winding.
  • the manufacturing method of the bag-like container according to the present invention is a long shape in which both inner surfaces are in close contact by crushing a resin film formed into a tube shape by inflation molding flatly and then cutting off both end edges along the feeding direction. After winding up into a roll as a base material consisting of two film materials, while rolling out the base material, one film material is used as a protective layer, and an outer layer material is laminated on the other film material side. It is a method for making a bag-making raw fabric, with the surface from which the protective layer is peeled facing inward, while peeling off the protective layer.
  • the base material made by flatly crushing a resin film formed into a tube shape is cut off at both end edges whose thickness has been increased. It can be done without hindrance. And when making a bag-making original made by laminating an outer layer material on such a base material, foreign matter such as dust, bacteria, and mold do not adhere to the protective layer until just before bag making. Thus, a bag-like container having a high cleanliness on the inner surface of the container can be produced industrially and stably.
  • Drawing 1 is an explanatory view showing one process of a manufacturing method of a bag-like container concerning this embodiment.
  • the resin material melt-kneaded by the extruder 10 is extruded in an annular shape from a circular die 11 attached to the tip of the extruder 10.
  • a material having heat sealability is used because it forms the inner surface layer 2b of the bag-like container 4 produced by the method as described later.
  • polyolefin resins such as low density polyethylene, linear low density polyethylene, medium density polyethylene, high density polyethylene, polypropylene, propylene-ethylene copolymer, and ethylene-vinyl acetate copolymer can be suitably used.
  • these resin materials preferably do not contain additives so that the additives will not bleed out and contaminate the contents.
  • a nozzle 12 is provided in the center of the circular die 11, and high pressure air is blown from the nozzle 12 to expand the molten material that has been pushed out from the circular die 11 in an annular shape.
  • the high-pressure air blown at this time is cleaned by passing it through an air filter so that foreign matter such as dust, bacteria, and mold do not adhere to the inner surface of the film 1.
  • the film 1 is cooled on its inner surface side by high-pressure air, while its outer surface side is cooled by being in contact with the cooling ring 13.
  • the film 1 is sandwiched between the pinch rollers 15 while being flattened while being guided by the guide plate 14, and is sent to the cutting unit 20 through the guide rollers 16 and the like.
  • both end edges 1a and 1a are cut off along the feeding direction (see FIG. 2A), and both end edges 1a are cut off.
  • 1a are wound around the winding roll 21, respectively.
  • 2A is a schematic cross-sectional view showing a cross section orthogonal to the feeding direction before cutting off both end edges 1a from the film 1, and both end edges 1a are cut off along the chain line shown in FIG. 2A. It is.
  • the specific means for laminating the outer layer material 2c on the inner layer 2b side of the base material 2 is not particularly limited.
  • these may be sandwiched between the cooling roll and the nip roll and bonded together.
  • you may make it adhere
  • the outer layer material 2c can be used as the outer layer material 2c depending on the performance required for the bag-like container 4 as the final product.
  • a cyclic olefin resin film a polyester resin film, a polyamide resin (nylon) film, an aluminum foil, a silica-deposited polyester film, an alumina-deposited polyester film, and ethylene-vinyl alcohol
  • EVOH polymer
  • a polyvinylidene chloride film vinylidene chloride
  • acrylic acid resin can be suitably used.
  • Such an outer layer material 2c may be a single layer, or may have a multilayer structure by combining a plurality of materials.
  • the adhesive polyurethane adhesive, vinyl acetate adhesive, acid-modified olefin resin, acid anhydride-modified polyolefin resin, and the like can be used.
  • the bag-shaped container 4 is manufactured by bag-making the bag-making raw fabric 3 prepared as described above.
  • the roll 3a that has wound up the bag-making raw fabric 3 is set in a bag-making machine, and while the raw material for bag-making 3 is fed out, the contents are filled and bag-making is performed simultaneously.
  • the bag forming raw material 3 prepared by laminating the outer layer material 2c on the base material 2 is supplied to the bag making machine as it is, and the lamination process and the bag making process are continuously performed. Also good.
  • FIG. 3 is explanatory drawing which shows an example which manufactures a bag, drawing
  • the bag-making raw fabric 3 from which the protective layer 2 a has been peeled is wrapped around the content filling cylinder 30 with the surface from which the protective layer 2 a has been peeled inward, and the back sticking seal device 31 is The sticker seal is heat sealed. Then, the contents are supplied from the contents filling cylinder 30, and the bag-like container 4 filled with the contents is made by cutting a predetermined position while being heat-sealed and sealed by the seal cutting device 32. It has become so.
  • the bag-making raw fabric 3 fed out from the roll 3a is bag-made while peeling the protective layer 2a, with the surface from which the protective layer 2a has been peeled facing inward.
  • the inner surface layer 2b is protected by the protective layer 2a until just before the bag is made, and foreign matter such as dust, bacteria, and mold can be prevented from adhering to the inner surface layer 2b.
  • the bag-making raw fabric 3 is made with the surface from which the protective layer 2a is peeled off as the inside.
  • the bag-like container 4 having a high cleanliness on the inner surface of the container can be produced industrially and stably.
  • the peeled protective layer 2 a can be reused as a raw material for the film 1.
  • both end edges 1a and 1a cut off from the film 1 can be reused as raw materials for the film 1 as well.
  • the above-described bag-making process can be performed, for example, in a class 100 clean room.
  • the entire bag making process is performed in a clean room having a medium cleanliness (for example, about class 1000), and after the protective layer 2a is peeled off, Only the section until the heat sealing is performed may be performed in a booth with higher cleanliness.
  • the bag-like container 4 is made while filling the contents in the bag-making process, but the bag-like container 4 is made in a state where a part is opened.
  • the opening may be sealed by heat sealing.
  • the bag-like container 4 may be made while attaching an extraction member called a spout used for this type of bag-like container, and the contents may be filled from the extraction member.
  • the specific form of the bag-like container 4 can be various forms such as a gusset type provided with a town on the side surface and a bottom formed with a self-supporting bottom. Furthermore, according to the specific form of the bag-like container 4, a plurality of bag-making raw fabrics 3 may be bonded together to form a bag, and these are pasted while cutting the bag-making raw fabric 3. You may make it make a bag together.
  • the above-described method for manufacturing a bag-like container according to the present invention can be used as a method for manufacturing a bag-like container that is widely used for storing various articles in various fields.

Abstract

L'invention porte sur un film (1), formé en une forme tubulaire par moulage par gonflage, qui est plié à plat et dont les bords opposés (1a, 1a) sont coupés le long de la direction d'avance pour obtenir un tissu d'origine en matériau de base (2) consistant en deux longs matériaux de film qui sont fermement liés sur les surfaces internes. Le tissu d'origine est enroulé pour ensuite utiliser un matériau de film en tant que couche protectrice (2a), et l'autre matériau de film en tant que couche de surface interne (2b), et un tissu d'origine (3) pour la fabrication de sac est produit par la stratification d'un matériau de couche externe (2c) sur la couche de surface interne (2b). Un sac est ensuite fabriqué à partir du tissu d'origine (3) pour la fabrication de sac alors que la couche protectrice (2a) est pelée de telle sorte que la surface à partir de laquelle la couche protectrice (2a) est pelée est retenue à l'intérieur. Lorsqu'un contenant en forme de sac est fabriqué à l'aide d'un film tubulaire produit par moulage par gonflage, le film peut être enroulé sans problème, même au milieu du processus de fabrication.
PCT/JP2009/060846 2008-07-17 2009-06-15 Procédé de fabrication d'un contenant en forme de sac WO2010007848A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-185937 2008-07-17
JP2008185937A JP2010023309A (ja) 2008-07-17 2008-07-17 袋状容器の製造方法

Publications (1)

Publication Number Publication Date
WO2010007848A1 true WO2010007848A1 (fr) 2010-01-21

Family

ID=41550256

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/060846 WO2010007848A1 (fr) 2008-07-17 2009-06-15 Procédé de fabrication d'un contenant en forme de sac

Country Status (2)

Country Link
JP (1) JP2010023309A (fr)
WO (1) WO2010007848A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210339450A1 (en) * 2018-10-31 2021-11-04 Tokuyama Corporation Antifouling Method for Polysilicon

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012056607A (ja) * 2010-09-10 2012-03-22 Asahi Kasei Pax Corp 飲料水用包装材料及びその製造方法
FR3025450B1 (fr) 2014-09-08 2016-12-23 Thales Sa Unite de reparation pour nacelle
JP6965966B2 (ja) * 2019-04-26 2021-11-10 大日本印刷株式会社 液体収納容器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002029563A (ja) * 2000-05-12 2002-01-29 Sumikei Aluminium Foil Co Ltd 包装用袋材および包装用袋
JP2002211580A (ja) * 2001-01-23 2002-07-31 Toppan Printing Co Ltd クリーンな包装材料及び包装袋

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002029563A (ja) * 2000-05-12 2002-01-29 Sumikei Aluminium Foil Co Ltd 包装用袋材および包装用袋
JP2002211580A (ja) * 2001-01-23 2002-07-31 Toppan Printing Co Ltd クリーンな包装材料及び包装袋

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210339450A1 (en) * 2018-10-31 2021-11-04 Tokuyama Corporation Antifouling Method for Polysilicon
EP3875431A4 (fr) * 2018-10-31 2022-08-03 Tokuyama Corporation Procédé antisalissure destiné à du polysilicium

Also Published As

Publication number Publication date
JP2010023309A (ja) 2010-02-04

Similar Documents

Publication Publication Date Title
US9315319B2 (en) Continuous process for trash bag with inner bag
US8356459B1 (en) Thermal laminates and laminating method for food packaging films
US9387957B2 (en) Trash bag with inner bag
WO2021049385A1 (fr) Contenant en matériau en feuille
JPS6344447A (ja) 熱可塑性樹脂輸送袋
WO2010007848A1 (fr) Procédé de fabrication d'un contenant en forme de sac
RU2016144502A (ru) Способ и устройство для экструдирования и этикетирования упаковочной тубы
CN108973287A (zh) 一种包装用易揭复合膜及其制造方法
JP2020062786A (ja) 袋用ラミネートフィルム及びその製造方法
FR2561575A1 (fr) Procede de fabrication de recipients tubulaires thermoplastiques ayant des proprietes barriere
EP3154781A1 (fr) Stratifié formant barrière au toucher doux et velouté
US20140134370A1 (en) Polypropylene homo-polymer based layered film and laminate thereof
JP2009154929A (ja) 包装袋、その製造装置、および包装袋の製造方法
US10167165B2 (en) Stock rolls containing a first folded film within a second folded film and methods of making the same
US20180072463A1 (en) Inner laminated packaging bag and automated methods of making and using the same
JP3744222B2 (ja) クリーン包装袋の製造装置
US20050153085A1 (en) Low cost film composite can liner
JP4240992B2 (ja) 積層体の製造方法
JP2019104501A (ja) 包装用積層体
JP2007203536A (ja) 積層体およびそれを用いた包装袋
JP5763511B2 (ja) 積層気泡シート、積層気泡シートの製造方法及び積層気泡シートによって形成される巾着袋
JP2019108131A (ja) 包装袋およびその製造方法
EP3219489B1 (fr) Film à couches minces à support séparable et procédé de la fabrication
JP2007126216A (ja) 折込部を有する密封袋及びその製造方法
WO2024029619A1 (fr) Poche

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09797776

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09797776

Country of ref document: EP

Kind code of ref document: A1