Metallized multi layer coating

A metal layer, multi-layer structure technology, applied in the field of packaging, can solve problems such as not being able to be opened cleanly

Inactive Publication Date: 2004-09-29
ATOFINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Document WO 01 / 34389 discloses a package using a multilayer film with oxygen and water vapor barrier properties, but this package has the disadvantage that when it is desired to open it, it cannot be opened cleanly

Method used

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Examples

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Embodiment Construction

[0033] The present invention will be described more specifically below. The packaging, the article of the invention - comprises a film made of metallized cast polypropylene (abbreviated MCPP). The film can be formed into the following structure type: BOPP or BOPET layer / ink layer / adhesive layer / MCPP film.

[0034] MCPP film has such as figure 1 The multilayer structure shown is in the following form: layer (1) / layer (2 / layer (3 / layer (4), the composition of which will be given below.

[0035] In the MCPP film, there are the following layers, which are arranged in the following order: BOPP or BOPET layer / ink layer / adhesive layer / layer (1) / layer (2) / layer (3) / layer (4).

[0036] Layer (1) is a metal layer applied on top of layer (2). For example, it may be a metal sheet or film, such as: aluminum, iron, copper, tin, nickel, silver, chromium, gold or an alloy mainly comprising at least one of the above metals.

[0037] Layer (3) is a polypropylene layer. The polypropylene of...

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Abstract

The invention relates to a metallised film, produced by means of a multilayer structure with a binder layer comprising 5 to 50 wt. % of a mixture (A) with: 5 to 100 % of a mixture of co-grafted polymers (C1) and (C2) comprising 90 to 20 wt. % of a polyethylene metallocene (C1) with a density of between 0.865 and 0.915, 10 to 80 wt. % of a polymer (C2) which is either a non-metallocene LLDPE or a homo- or co-polymerised polypropylene and 95 to 0 wt. % of a polyethylene (D) selected from the homo- or co-polymerised polyethylenes and the elastomers. The mixture (A) is such that the content of graft monomer grafted is between 30 and 10<5> ppm, the MFI or flow index in the molten state (standard ASTM D 1238, at 190 DEG C with 2.16kg) is between 0.1 and 30g / 10min and 50 to 95 wt. % of a polypropylene (B) homo- or co-polymer.

Description

technical field [0001] The invention relates to the field of packaging, in particular to biaxially oriented or unoriented multilayer films using metallization (metallisation, métallisée) laminated with printed or unprinted biaxially oriented polypropylene (abbreviated as BOPP) film or biaxially oriented polyethylene terephthalate (abbreviated as BOPET) film, and this film shows very good adhesion between layers, even when it is welded Also exhibited very good adhesion. The invention applies in particular to packages made of welded films, such as pouches, bags, bags or wraps, which are constructed so that the packages can be easily opened by hand. Non-limiting examples may be exemplified by packaging for preservation, biscuits, sugar or meat. Background technique [0002] Document WO 01 / 34389 discloses a package using a multilayer film with oxygen and water vapor barrier properties, but this package has the disadvantage that when it is desired to open it, it does not open c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/08B32B15/085B32B27/32C08L23/08C08L23/10B65D65/40C08L51/06C09J123/10
CPCC08L23/0815C09J123/10C08L51/06Y10T428/31678Y10T428/24917C08L2314/06C08L2205/02C08L2666/24E06B1/363
Inventor S·特克桑Y·勒杜P·罗伯特
Owner ATOFINA
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