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A kind of high thermal adhesive strength high barrier aluminized film and production method thereof

A high-strength, aluminized film technology, applied in the direction of chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problem of barrier performance, heat sealing performance reduction, unsafe use, and reduced shelf life of contents and other issues, to achieve the effects of enhanced tensile properties, uniform and dense aluminum plating process, and minimum cost

Active Publication Date: 2020-08-25
HUANGSHAN NOVEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for composite products with aluminized film (especially composited with PET), the aluminum layer will have transfer problems, the peel strength will decrease, and the barrier performance and heat sealing performance will decrease accordingly; at the same time, false seals and heat seals will easily occur during automatic high-speed packaging. Poor heat-sealing phenomena such as layer-by-layer delamination will reduce the shelf life of the contents and fail to meet safe use

Method used

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  • A kind of high thermal adhesive strength high barrier aluminized film and production method thereof
  • A kind of high thermal adhesive strength high barrier aluminized film and production method thereof
  • A kind of high thermal adhesive strength high barrier aluminized film and production method thereof

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Effect test

Embodiment 1

[0035] In the heat-sealing layer, the mass ratio of the ternary copolymerized PP and the blocking agent is 95:2, the second core layer includes homopolymerized PP, the first core layer includes random copolymerized PP, and the corona layer includes: The mass ratio of binary copolymerized PP, cycloolefin copolymer, and high viscoelastic body is 68:16:12, and the melt index of the high viscoelastic body is 6.5g / 10min; the thickness of the heat-sealing layer is 15 μm, and the The thickness of the second core layer is 50 μm, the thickness of the first core layer is 10 μm, and the thickness of the corona layer is 25 μm.

Embodiment 2

[0037] In the heat-sealing layer, the mass ratio of the ternary copolymerized PP and the blocking agent is 97:3, the second core layer includes homopolymerized PP, the first core layer includes random copolymerized PP, and the corona layer includes: The mass ratio of binary copolymerized PP, cycloolefin copolymer, and high viscoelastic body is 70:17:13, and the melt index of the high viscoelastic body is 7g / 10min; the thickness of the heat-sealing layer is 16 μm, and the first The thickness of the second core layer is 51 μm, the thickness of the first core layer is 9 μm, and the thickness of the corona layer is 24 μm.

Embodiment 3

[0039] In the heat-sealing layer, the mass ratio of the ternary copolymerized PP and the blocking agent is 99:4, the second core layer includes homopolymerized PP, the first core layer includes random copolymerized PP, and the corona layer includes: The mass ratio of binary copolymerized PP, cycloolefin copolymer and high viscoelastic body is 72:18:14, and the melt index of the high viscoelastic body is 7.5g / 10min; the thickness of the heat-sealing layer is 17 μm, and the The thickness of the second core layer is 52 μm, the thickness of the first core layer is 8 μm, and the thickness of the corona layer is 23 μm.

[0040] The following table 2 is the physical and mechanical properties and barrier performance test comparison results of the barrier properties of the high thermal adhesive strength and high barrier aluminized film base material obtained in the present invention and the traditional barrier film base material and the high barrier VMCPP film disclosed in Patent No. CN...

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Abstract

The invention relates to a high thermal adhesive strength and high barrier aluminum laminated film and a production method thereof. The film successively consists of a heat seal layer, a second core layer, a first core layer, a corona layer and an aluminum plated layer. The heat seal layer includes ternary copolymerized PP and an anti-block agent in a mass ratio of (95-99):(2-4), the second core layer includes homopolymerized PP, the first core layer includes random copolymerized PP, and the corona layer includes binary copolymerized PP, a cycloalkene copolymer and a high viscosity elastomer in a mass ratio of (68-72):(16-18):(12-14), and the melt flow rate of the high viscosity elastomer is 6.5-7.5g / 10min. The thicknesses of the heat seal layer, the second core layer, the first core layerand the corona layer are 15-17micron, 50-52micron, 8-10micron and 23-25micron respectively. The aluminum laminated film provided by the invention has high laminated aluminum adhesion, and oxygen barrier, moisture barrier and odor barrier performance obviously superior to traditional aluminum laminated films, and is suitable for use as different high-speed automatic packaging composite membrane base materials.

Description

technical field [0001] The invention belongs to the technical field of film production, and in particular relates to an aluminized film with high thermal adhesive strength and high barrier and a production method thereof. Background technique [0002] As a barrier heat-sealable film, aluminized film not only has excellent properties such as gas barrier, moisture barrier, light resistance and odor retention, but also has a good metallic luster visual effect. Therefore, aluminized film is widely used in composite packaging, and is currently mainly used in puffed food packaging such as biscuits, pharmaceutical packaging, and the outer packaging of some cosmetics. However, for composite products with aluminized film (especially composited with PET), the aluminum layer will have transfer problems, the peel strength will decrease, and the barrier performance and heat sealing performance will decrease accordingly; at the same time, false seals and heat seals will easily occur durin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/06B32B33/00B65D65/40B65D65/42B29C48/21
CPCB32B27/08B32B27/32B32B33/00B32B2255/10B32B2255/205B32B2307/7244B32B2307/7265B65D65/40B65D65/42
Inventor 胡国利汪学文叶青松童成刚汪洋
Owner HUANGSHAN NOVEL
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