WO2010041289A1 - Multi-layer laminate plastic - Google Patents

Multi-layer laminate plastic Download PDF

Info

Publication number
WO2010041289A1
WO2010041289A1 PCT/IT2009/000455 IT2009000455W WO2010041289A1 WO 2010041289 A1 WO2010041289 A1 WO 2010041289A1 IT 2009000455 W IT2009000455 W IT 2009000455W WO 2010041289 A1 WO2010041289 A1 WO 2010041289A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
microns
weight
per
square meter
Prior art date
Application number
PCT/IT2009/000455
Other languages
French (fr)
Inventor
Fabrizio Fattori
Original Assignee
Tecnopack S.R.L.
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 Tecnopack S.R.L. filed Critical Tecnopack S.R.L.
Priority to CN200980139271.2A priority Critical patent/CN102171031B/en
Publication of WO2010041289A1 publication Critical patent/WO2010041289A1/en

Links

Classifications

    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • 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
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding 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
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/4023—Coloured on the layer surface, e.g. ink
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/406—Bright, glossy, shiny surface
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • 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
    • B32B2307/54—Yield strength; Tensile strength
    • 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
    • B32B2307/546—Flexural strength; Flexion stiffness
    • 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
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • 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
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2307/75—Printability
    • 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
    • B32B2437/00—Clothing
    • 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
    • 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
    • B32B2439/02—Open containers
    • B32B2439/06—Bags, sacks, sachets
    • 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
    • B32B2479/00—Furniture

Definitions

  • the present invention belongs to the field of producing flexible materials - which are different among them - consisting of a plastic film sandwich for the production of bags, suitcases, sofas and chairs covering, furniture and clothing.
  • LDPE Low Density Polyethylene
  • the purpose of the present invention is to obtain a multilayer laminate plastic characterized by the merging of different materials, PET and polyethylene, as well as to obtain a particularly lightness and at the same time high tensile strength, torsion and tear so that it can be easily- used in the production of purses and bags, covers for furniture and common clothing accessories, replacing the classic leather, skin and fabric.
  • Another aim of the present invention in accordance with the previous one is to obtain a multi-layer laminate plastic having a strong resistance to perforation, which guarantees the stability and maintenance of the seam point over time.
  • Another aim of the present invention in accordance with the previous ones is to obtain a multi-layer laminate plastic that produces a particular aesthetic effect in the field of saddlery, harness and travel bags, while assuming a particular brightness, transparency and strong water resistance combined to a low production cost.
  • the multi-layer laminate plastic - object of the present invention - is produced, as a first preferred embodiment, through merging by hot rolling the three pre-peprared and custom-made overlapping components, in which:
  • the first component is made of a polyester film (PET) having a thickness matching 12 microns and a weight of 16.6 grams per square meter. This film is coloured on one side by the layout of a ink film of PVB having a weight of 2 grams per square meter.
  • a film of a bi-component polyurethane adhesive having a weight of 2 grams per square meter is spread so that it can adhere to a film of LDPE (Low Density Polyethylene) , having a thickness of 35 microns and weighing 32.2 grams per square meter;
  • LDPE Low Density Polyethylene
  • the second layer component set between the first and third layer, which is realized with an overall thickness of 276 microns and a weight of 300 grams per square meter, it is produced by extruding two LDPE (Low Density Polyethylene) films and heat-sealed with a form-roller by forming circular bubbles having a 30 mm diameter.
  • LDPE Low Density Polyethylene
  • the third layer component is made of a polyester film (PET) with a thickness equal to 12 microns and a weight of 16.6 grams per square meter.
  • PET polyester film
  • This film is coloured on one side by the layout of a ink film of PVB having a weight of 2 grams per square meter.
  • a film of a bi-component polyurethane adhesive having a weight of 2 grams per square meter is spread so that it can adhere to a film of LDPE (Low Density Polyethylene) having a thickness of 35 microns and weighing 32.2 grams per square meter;
  • LDPE Low Density Polyethylene
  • the second layer component of a multi-layer laminated plastic can be realized with air bubbles having geometric shapes different from the circular ones, for example the air bubbles can be realized elliptically, triangularly, quadrangularly or mixed, or with an irregular geometry and a size different from thirty millimetres.
  • the intermediate layer component of the multi-layer laminate plastic with circular bubbles and a diameter size smaller than thirty millimetres, in practice over ten millimetres, or bubble sizes greater than thirty millimetres, but less than fifty millimetres.
  • the ink film of PVB has a weight of 2 gr/sqm and can have different colours, shades and patterns, or can be overlaid with other layers of PVB ink having a weight 2 gr/sqm., or it can be coupled with prints.

Landscapes

  • Laminated Bodies (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)

Abstract

The present invention belongs to the field of producing flexible materials consisting of a plastic film sandwich for the production of bags, suitcases, sofas and chairs covering, furniture and clothing. Multi-layer laminated plastic is realized by the combination of three overlapping components: a first and third layer component consists of a polyester film coloured on one side and glued by laying a bi-component polyurethane adhesive film having a weight of 2 grams per square meter, and a LDPE film (Low Density Polyethylene) having a thickness of 35 microns and a weight of 32.2 grams per square meter; a second layer component, placed between the first and the third component, is made by extruding two LDPE films (Low Density Polyethylene) and heat-sealed with a form-roller, by forming air bubbles inside;

Description

Multi-layer laminate plastic Description
Technical The present invention belongs to the field of producing flexible materials - which are different among them - consisting of a plastic film sandwich for the production of bags, suitcases, sofas and chairs covering, furniture and clothing.
State of the art t
A packaging material originating from the extrusion of two LDPE (Low Density Polyethylene) films, which are then heat- welded by forming circular air bubbles, is universally known; it is also known that the polyester film (PET) and polyethylene LD film cannot be easily coupled through rolling. Therefore, a material formed by coupling through overlapping and subsequent lamination of layers of PET films and LD polyethylene is not known to the applicant.
Aims and advantages of the invention
The purpose of the present invention is to obtain a multilayer laminate plastic characterized by the merging of different materials, PET and polyethylene, as well as to obtain a particularly lightness and at the same time high tensile strength, torsion and tear so that it can be easily- used in the production of purses and bags, covers for furniture and common clothing accessories, replacing the classic leather, skin and fabric. Another aim of the present invention in accordance with the previous one is to obtain a multi-layer laminate plastic having a strong resistance to perforation, which guarantees the stability and maintenance of the seam point over time. Another aim of the present invention in accordance with the previous ones is to obtain a multi-layer laminate plastic that produces a particular aesthetic effect in the field of saddlery, harness and travel bags, while assuming a particular brightness, transparency and strong water resistance combined to a low production cost.
How to produce the invention
The multi-layer laminate plastic - object of the present invention -, is produced, as a first preferred embodiment, through merging by hot rolling the three pre-peprared and custom-made overlapping components, in which: The first component is made of a polyester film (PET) having a thickness matching 12 microns and a weight of 16.6 grams per square meter. This film is coloured on one side by the layout of a ink film of PVB having a weight of 2 grams per square meter. Then, a film of a bi-component polyurethane adhesive having a weight of 2 grams per square meter is spread so that it can adhere to a film of LDPE (Low Density Polyethylene) , having a thickness of 35 microns and weighing 32.2 grams per square meter;
The second layer component, set between the first and third layer, which is realized with an overall thickness of 276 microns and a weight of 300 grams per square meter, it is produced by extruding two LDPE (Low Density Polyethylene) films and heat-sealed with a form-roller by forming circular bubbles having a 30 mm diameter.
The third layer component is made of a polyester film (PET) with a thickness equal to 12 microns and a weight of 16.6 grams per square meter. This film is coloured on one side by the layout of a ink film of PVB having a weight of 2 grams per square meter. Then, a film of a bi-component polyurethane adhesive having a weight of 2 grams per square meter is spread so that it can adhere to a film of LDPE (Low Density Polyethylene) having a thickness of 35 microns and weighing 32.2 grams per square meter;
To increase the rigidity of the multi-layer laminate plastic, depending on the type of usage, a polyester film
(PET) is used having a thickness greater than 12 microns and a weight proportionately higher. Conversely, for greater flexibility, the thickness of the polyester film can be decreased. The second layer component of a multi-layer laminated plastic can be realized with air bubbles having geometric shapes different from the circular ones, for example the air bubbles can be realized elliptically, triangularly, quadrangularly or mixed, or with an irregular geometry and a size different from thirty millimetres. We have realized the intermediate layer component of the multi-layer laminate plastic with circular bubbles and a diameter size smaller than thirty millimetres, in practice over ten millimetres, or bubble sizes greater than thirty millimetres, but less than fifty millimetres. The ink film of PVB has a weight of 2 gr/sqm and can have different colours, shades and patterns, or can be overlaid with other layers of PVB ink having a weight 2 gr/sqm., or it can be coupled with prints.

Claims

Claims
1) Multi-layer laminated plastic realized by the combination of three overlapping components: a) a first layer component consists of a polyester film coloured on one side and glued by laying a bi-component polyurethane adhesive film having a weight of 2 grams per square meter, and a LDPE film (Low Density Polyethylene) having a thickness of 35 microns and a weight of 32.2 grams per square meter; b) a second layer component, placed between the first and the third component, is made by extruding t(wo LDPE films (Low Density Polyethylene) and heat-sealed with a form-roller, by forming air bubbles inside; c) The third layer component consists of a polyester film coloured on one side and glued by laying a bi-component polyurethane adhesive film having a weight of 2 grams per square meter, and a LDPE film (Low Density Polyethylene) having a thickness of 35 microns and a weight of 32.2 grams per square meter. 2) A multi-layer laminated plastic as per claim 1) characterized by the fact that the coloured, polythene PET film having a thickness of 12 micron and a weight of 16.6 grams per square meter, on which a PVB ink is spread having a weight of 2 per sqm . 3) Multi-layer laminated plastic as per claim 1) characterized by the fact that the polyethylene LD film presents circular bubbles having a diameter of 30 mm and an overall thickness of 276 microns, as well as a weight of 300 grams per square meter. 4) Multi-layer laminated plastic as per claim 1) characterized by the fact that the colour coated PET film consists of a thickness greater than 12 microns, but not greater than 30 microns and not less than 6 microns. 5) Multi-layer laminated plastic as per claim 1) characterized by the fact that the coated PET film with coloured PVB ink consists of a 2 g / sqm. of different colours, shades, patterns or coupled to other layers of PVB ink having 2 gr/ sqm or matching prints.
6) Multi-layer laminated plastic as per claim 1) characterized by the fact that the polyethylene LD film includes circular bubbles having a diameter of less than 30 mm but greater than 10 mm, or greater than 30 mm. but less than 50 mm.
7) Multi-layer laminated plastic as per claim 1) characterized by the fact that the polyethylene LD film includes geometric, elliptical, triangular, polygonal or irregular shapes of bubbles. 8) Multi-layer laminated plastic as per claim 1) characterized by the fact that the Polyethylene LD film consists of bubbles totalling a thickness greater than 276 microns but not greater than 400 microns and not less than 100 microns; with a weight exceeding 300 per mq. but not exceeding 400 per sqm. and not less than 100 per sqm.
PCT/IT2009/000455 2008-10-09 2009-10-08 Multi-layer laminate plastic WO2010041289A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200980139271.2A CN102171031B (en) 2008-10-09 2009-10-08 Multi-layer laminate plastic

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITNA2008A000057 2008-10-09
ITNA2008A000057A IT1392096B1 (en) 2008-10-09 2008-10-09 MULTILAYER PLASTIC LAMINATE

Publications (1)

Publication Number Publication Date
WO2010041289A1 true WO2010041289A1 (en) 2010-04-15

Family

ID=41057622

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2009/000455 WO2010041289A1 (en) 2008-10-09 2009-10-08 Multi-layer laminate plastic

Country Status (3)

Country Link
CN (1) CN102171031B (en)
IT (1) IT1392096B1 (en)
WO (1) WO2010041289A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102644473A (en) * 2012-04-06 2012-08-22 贵州开磷（集团）有限责任公司 Light plastic-woven inner sticking film air duct
WO2017029221A1 (en) * 2015-08-14 2017-02-23 Sig Technology Ag Sheetlike composite, especially for dimensionally stable containers, with an outer thermoplastic sealing layer applied over part of the surface
WO2017029218A1 (en) * 2015-08-14 2017-02-23 Sig Technology Ag Sheetlike composite, especially for dimensionally stable containers, with an outer thermoplastic sealing layer applied over part of the surface, especially for sealing a longitudinal seam

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102423929B (en) * 2011-09-01 2014-07-23 江阴新奇特塑胶制品有限公司 Solvent-free composite plastic film and composite technology thereof
CN108407419A (en) * 2018-05-09 2018-08-17 海宁市天祥包装机械厂 A kind of enhanced blister package film

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1105482A (en) * 1964-02-27 1968-03-06 Dunlop Co Ltd Improvements relating to flexible sheet materials
DE1654451A1 (en) * 1965-02-15 1971-04-01 Koeba Ausruestungs Gmbh Process for the production of a multi-layer foam synthetic leather
GB2274085A (en) * 1993-01-07 1994-07-13 Mandarin Bubblepak Limited Laminated bubble sheet for use as packaging material
GB2316652A (en) * 1996-08-29 1998-03-04 Jiffy Packaging Co Ltd Cushioning material for protective bags
JP2003165190A (en) * 2001-11-30 2003-06-10 Mitsubishi Polyester Film Copp Fine air bubble-containing laminated stretched polyester film
US20040000581A1 (en) * 2002-06-20 2004-01-01 Sealed Air Corporation (Us) Polypropylene/cushioned envelope

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE523861C2 (en) * 2002-05-07 2004-05-25 Tetra Laval Holdings & Finance Packaging laminate, method of manufacture thereof, and packaging container made of packaging laminate

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1105482A (en) * 1964-02-27 1968-03-06 Dunlop Co Ltd Improvements relating to flexible sheet materials
DE1654451A1 (en) * 1965-02-15 1971-04-01 Koeba Ausruestungs Gmbh Process for the production of a multi-layer foam synthetic leather
GB2274085A (en) * 1993-01-07 1994-07-13 Mandarin Bubblepak Limited Laminated bubble sheet for use as packaging material
GB2316652A (en) * 1996-08-29 1998-03-04 Jiffy Packaging Co Ltd Cushioning material for protective bags
JP2003165190A (en) * 2001-11-30 2003-06-10 Mitsubishi Polyester Film Copp Fine air bubble-containing laminated stretched polyester film
US20040000581A1 (en) * 2002-06-20 2004-01-01 Sealed Air Corporation (Us) Polypropylene/cushioned envelope

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102644473A (en) * 2012-04-06 2012-08-22 贵州开磷（集团）有限责任公司 Light plastic-woven inner sticking film air duct
WO2017029221A1 (en) * 2015-08-14 2017-02-23 Sig Technology Ag Sheetlike composite, especially for dimensionally stable containers, with an outer thermoplastic sealing layer applied over part of the surface
WO2017029218A1 (en) * 2015-08-14 2017-02-23 Sig Technology Ag Sheetlike composite, especially for dimensionally stable containers, with an outer thermoplastic sealing layer applied over part of the surface, especially for sealing a longitudinal seam
US10759208B2 (en) 2015-08-14 2020-09-01 Sig Technology Ag Sheetlike composite, especially for dimensionally stable containers, with an outer thermoplastic sealing layer applied over part of the surface
US11046056B2 (en) 2015-08-14 2021-06-29 Sig Technology Ag Sheetlike composite, especially for dimensionally stable containers, with an outer thermoplastic sealing layer applied over part of the surface, especially for sealing a longitudinal seam

Also Published As

Publication number Publication date
IT1392096B1 (en) 2012-02-09
ITNA20080057A1 (en) 2010-04-10
CN102171031B (en) 2014-08-20
CN102171031A (en) 2011-08-31

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