[go: up one dir, main page]

GB1337331A - Heat-sealable film - Google Patents

Heat-sealable film

Info

Publication number
GB1337331A
GB1337331A GB2027471A GB2027471A GB1337331A GB 1337331 A GB1337331 A GB 1337331A GB 2027471 A GB2027471 A GB 2027471A GB 2027471 A GB2027471 A GB 2027471A GB 1337331 A GB1337331 A GB 1337331A
Authority
GB
United Kingdom
Prior art keywords
film
heat
biaxially oriented
face
sealable film
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.)
Expired
Application number
GB2027471A
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB1337331A publication Critical patent/GB1337331A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91—Heating, e.g. for cross linking
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/027—Thermal properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/35—Heat-activated
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/31—Heat sealable
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • 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
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers
    • B32B2439/46—Bags
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)

Abstract

1337331 Multilayer films MINNESOTA MINING & MFG CO 19 April 1971 [26 Jan 1970] 20274/71 Headings B5B and B5N A composite heat-sealable film comprises a support film of biaxially oriented polyethyleneterephthalate to which is bonded, e.g. by simultaneous co-extrusion of both layers, a sealing film of at least 0-2 mils thickness which has a lower m.p. and is thinner than the support film and which comprises a copolymer in the molar proportions 70/30 to 90/10 of ethyleneterephthalate with ethylenehexahydroterephthalate. The film is able to form a face-to-face heat-seal of peel strength #1¢ lb/in and can be creased without cracking after being heated for 15 min. at 220‹ C. The overall film thickness may be about 1 mil. and is suitable for packaging "cookin-the-bag" foodstuffs. The sealing layer may also be biaxially oriented.
GB2027471A 1970-01-26 1971-04-19 Heat-sealable film Expired GB1337331A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US557370A 1970-01-26 1970-01-26

Publications (1)

Publication Number Publication Date
GB1337331A true GB1337331A (en) 1973-11-14

Family

ID=21716552

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2027471A Expired GB1337331A (en) 1970-01-26 1971-04-19 Heat-sealable film

Country Status (8)

Country Link
JP (1) JPS5023078B1 (en)
BE (1) BE761984A (en)
CA (1) CA929455A (en)
DE (1) DE2105833B2 (en)
FR (1) FR2080927B1 (en)
GB (1) GB1337331A (en)
LU (1) LU62487A1 (en)
NL (1) NL7100564A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2810065A1 (en) * 1977-03-08 1978-09-21 Ucb Sa PLASTIC CONTAINER FOR PRESSURIZED, GAS-DRINKING BEVERAGES
US4375494A (en) 1980-03-12 1983-03-01 Imperial Chemical Industries Plc Polyester film composites
EP0109305A2 (en) * 1982-11-15 1984-05-23 Mitsui Petrochemical Industries, Ltd. Laminates and their use in making containers
EP0289162A2 (en) * 1987-04-24 1988-11-02 Imperial Chemical Industries Plc Receiver sheet
EP0379190A2 (en) * 1989-01-19 1990-07-25 Toyo Boseki Kabushiki Kaisha A polyester laminated film
WO2006002263A1 (en) * 2004-06-21 2006-01-05 E.I. Dupont De Nemours And Company Article comprising polyester multilayer film
WO2020240584A1 (en) 2019-05-29 2020-12-03 Flex Films (Usa) Inc Formable films, laminate structures, and related methods

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871947A (en) * 1973-01-15 1975-03-18 Minnesota Mining & Mfg Biaxially oriented polyethylene terephthalate film having a surface suitable for writing thereon
US4011358A (en) 1974-07-23 1977-03-08 Minnesota Mining And Manufacturing Company Article having a coextruded polyester support film
JPS5812153B2 (en) * 1974-10-31 1983-03-07 東レ株式会社 Redflower polyester film
GB1517205A (en) * 1975-10-17 1978-07-12 Ici Ltd Thermosetting-thermoplastic polyester composites
DE2935631A1 (en) * 1979-09-04 1981-04-16 Plate Bonn Gmbh, 5300 Bonn MULTILAYER PLASTIC FILM, METHOD FOR THE PRODUCTION AND USE THEREOF
US4456164A (en) * 1982-05-18 1984-06-26 Keyes Fibre Company Deliddable ovenable container
JPS59143616A (en) * 1983-02-08 1984-08-17 Toyo Seikan Kaisha Ltd How to stretch plastic laminates
DE3408159A1 (en) * 1984-03-06 1985-09-12 Hoechst Ag, 6230 Frankfurt TUBULAR PACKING SLEEVE BASED ON A POLYESTER FILM

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1044068A (en) * 1962-10-24 1966-09-28 Union Carbide Corp Production of coated biaxially oriented linear highly crystalline polyolefin films
FR1441508A (en) * 1965-02-26 1966-06-10 Cipso Soc Improved heat sealing of biaxially oriented thermoplastic films by stretching
US3386476A (en) * 1965-07-12 1968-06-04 Du Pont Laminates of polyethylene terephthalate

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2810065A1 (en) * 1977-03-08 1978-09-21 Ucb Sa PLASTIC CONTAINER FOR PRESSURIZED, GAS-DRINKING BEVERAGES
US4375494A (en) 1980-03-12 1983-03-01 Imperial Chemical Industries Plc Polyester film composites
EP0109305A2 (en) * 1982-11-15 1984-05-23 Mitsui Petrochemical Industries, Ltd. Laminates and their use in making containers
EP0109305A3 (en) * 1982-11-15 1985-04-10 Mitsui Petrochemical Industries, Ltd. Laminates and their use in making containers
EP0289162A2 (en) * 1987-04-24 1988-11-02 Imperial Chemical Industries Plc Receiver sheet
EP0289162A3 (en) * 1987-04-24 1990-07-04 Imperial Chemical Industries Plc Receiver sheet
EP0379190A2 (en) * 1989-01-19 1990-07-25 Toyo Boseki Kabushiki Kaisha A polyester laminated film
EP0379190A3 (en) * 1989-01-19 1991-03-20 Toyo Boseki Kabushiki Kaisha A polyester laminated film
US5458965A (en) * 1989-01-19 1995-10-17 Toyo Boseki Kabushiki Kaisha Polyester laminated film
EP0712719A1 (en) * 1989-01-19 1996-05-22 Toyo Boseki Kabushiki Kaisha A polyester laminated film
WO2006002263A1 (en) * 2004-06-21 2006-01-05 E.I. Dupont De Nemours And Company Article comprising polyester multilayer film
US9126389B2 (en) 2004-06-21 2015-09-08 Dupont Teijin Films U.S. Limited Partnership Article comprising polyester multilayer film
WO2020240584A1 (en) 2019-05-29 2020-12-03 Flex Films (Usa) Inc Formable films, laminate structures, and related methods
EP3976721A4 (en) * 2019-05-29 2022-07-06 Flex Films (USA) Inc. MOLDABLE FILM, LAMINATE STRUCTURES AND RELATED PROCESSES
US12168340B2 (en) 2019-05-29 2024-12-17 Flex Films (Usa), Inc. Formable films, laminate structures, and related methods

Also Published As

Publication number Publication date
CA929455A (en) 1973-07-03
DE2105833B2 (en) 1977-06-08
FR2080927A1 (en) 1971-11-26
JPS5023078B1 (en) 1975-08-05
FR2080927B1 (en) 1975-01-17
NL7100564A (en) 1971-07-28
LU62487A1 (en) 1971-08-11
DE2105833A1 (en) 1971-08-12
BE761984A (en) 1971-07-26

Similar Documents

Publication Publication Date Title
GB1337331A (en) Heat-sealable film
EP0364301A3 (en) Nonoriented polyester films with modified heat seal layer
NO854731L (en) MULTILAYER MOVIES CONTAINING ORIENTED LAYERS OF NYLON AND ETHYLENE VINYL ALCOHOL.
ES8609407A1 (en) A plural-layer packaging film, a method of making said film and a bag made therefrom.
ES8900112A1 (en) Heat-sealable multilayer foils with a low gas permeability, and their use as packaging materials.
MY103422A (en) Laminated metal sheet
US3616190A (en) Laminated heat-sealable sheet having aluminum adhered to a vinyl-chloridecoated regenerated cellulose sheet
JPS60260334A (en) Laminate
KR940006878A (en) Manufacturing method of dust-free filler air, dust-free container and spore clean film
FR2503101B1 (en)
EP0291065A3 (en) Nonoriented polyester films for lidding stock
JPS6043304B2 (en) Multilayer laminate structure for retort food
JPH0116606Y2 (en)
JP2747290B2 (en) Packaging materials for long-term storage of preservative foods
JP2017193120A (en) Laminate and stick-shaped packaging bag using the same
JPS591794Y2 (en) Film
GB841015A (en) Container for packing and cooking food
JPH01110953A (en) High moistureproof laminated film
FR2369177A1 (en) Laminated polyolefin packaging material - with two oriented polyethylene or polypropylene layers at an angle to each other, bonded to a stiffer layer e.g. of aluminium foil
GB1301787A (en)
IL42217A (en) Flexible laminate
JPH0143225Y2 (en)
JPS6047107B2 (en) Laminated film for packaging
ES272622U (en) Multilayered system for the closure of plastics packages.
JPH0121798Y2 (en)

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee