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Vacuum aluminium plating film with high adhesion to aluminium and its production method

A technology of vacuum aluminum plating and high adhesion, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc. and the effect of improving adhesion, enhancing adhesion

Inactive Publication Date: 2008-03-19
安徽双津实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adhesion of the aluminum layer is not very high after the corona layer of the ordinary vacuum aluminum-coated cast film is coated with aluminum, which will affect the subsequent composite effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] 1. The production method of the vacuum aluminized film with high adhesion to aluminum is to use the tape casting co-extrusion method to produce the vacuum aluminized film composed of a corona treatment layer, an intermediate layer and a heat-sealing layer. A polar polymer material is added to the halo treatment layer material for blending. The corona treatment layer is made of homopolymerized or copolymerized polypropylene, the middle layer is made of homopolymerized polypropylene, and the heat sealing layer is made of copolymerized polypropylene, which is produced by casting method. After the film is formed, the corona layer is plated with aluminum. The corona treatment layer, intermediate layer and heat sealing layer can also use the components in the following 2 (except for the polyolefin elastomer with good melt-mixability in the corona treatment layer, because this component has been added in this process) .

[0014] 2. Vacuum aluminized film with high adhesion to...

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PUM

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Abstract

The invention discloses a vacuum aluminum film, which has a high adhesion to an aluminum as well as its production method. A corona layer is blended up with an isotactic polypropylene and / or a copolymer polypropylene, and a polyolefin elastomer which can be melted with the polypropylene and an anti-adherent. A middle layer group comprises the isotactic polypropylene. A heat layer group consists of polypropylene or isotactic polypropylene. The invention enhances the adhesion of the aluminum layer through adding polar polymer material into the film corona layer. The testing result of the aluminum layer adhesion of the vacuum aluminum flow extension film provided by the invention is larger than 1.0 Newton, while the testing result of the aluminum layer adhesion of a general vacuum aluminum flow extension film is only 0.6 Newton at most. The invention can be widely used for printing, compositing and packaging areas, and has an excellent barrier property for water vapor and oxygen.

Description

technical field [0001] The invention relates to a vacuum aluminized casting film with high adhesion and a production method used in the fields of printing, compounding and packaging. Background technique [0002] Due to its excellent barrier properties to water vapor and oxygen, the vacuum aluminized film has been widely used in the food packaging industry. However, after the ordinary vacuum aluminized cast film is compounded with other films (such as BOPP film), there will be a phenomenon of aluminum layer transfer or a small peeling force, resulting in easy delamination of the composite film, which seriously affects the shelf life of the product. Ordinary vacuum aluminized cast film generally adopts a three-layer structure: corona layer, intermediate layer, and heat-sealing layer. The corona layer is made of homopolymerized or copolymerized polypropylene, the middle layer is made of homopolymerized polypropylene, and the heat-sealing layer is made of copolymerized polyprop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/18
Inventor 唐新国
Owner 安徽双津实业有限公司
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