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Aluminized non-stretching polypropylene film with enhanced aluminium layer peeling strength and preparation method thereof

A technology of peeling strength and polypropylene film, which is applied in the direction of chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve problems such as difficult peeling, food hygiene and safety impact, and achieve enhanced adsorption capacity and good adhesion Intensity, dramatic effect

Inactive Publication Date: 2009-03-11
南京金中达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestically, dry compounding is basically adopted, that is, glue compounding is used. This compounding process has the advantages of strong compounding fastness and not easy to peel off, but it needs to use polyurethane coating, which has certain organic residual molecules, which has a certain impact on food hygiene and safety.

Method used

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  • Aluminized non-stretching polypropylene film with enhanced aluminium layer peeling strength and preparation method thereof
  • Aluminized non-stretching polypropylene film with enhanced aluminium layer peeling strength and preparation method thereof

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] As shown in the figure, the aluminized grade unstretched polypropylene film with enhanced aluminum layer peel strength of the present invention is composed of a heat-sealing layer (1), a core layer (2) and a corona layer (3). Among them, the heat-sealing layer is made of ternary copolymerized polypropylene, the core layer is made of homopolypropylene, and the corona layer is made of a blend material of terpolymerized polypropylene and ethylene-methyl methacrylate copolymer in a weight ratio of 3:1. The layer height ratio of the heat-sealing layer, the core layer and the corona layer is 1:3:1.

[0022] The production method is as follows:

[0023] 1. Put terpolymerized polypropylene into extruder A, put homopolymerized polypropylene into extruder B, and mix terpolymerized polypropylene and ethylene-methyl methacrylate copolymer at a weight ratio of 3:1 evenly A...

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Abstract

The invention discloses an aluminum plating non-stretching polypropylene film with aluminum layer peeling intensity enhancement type, which is composited by a heat sealing layer, a sandwich layer and a corona layer; wherein, the heat sealing layer uses ternary polymerization polypropylene; the sandwich layer uses HOPP; the corona layer uses the blended materials of the ternary polymerization polypropylene and ethylene / methylmethacrylate. The invention also discloses a preparation method of the aluminum plating non-stretching polypropylene film with the aluminum layer peeling intensity enhancement type. The aluminum plating non-stretching polypropylene film of aluminum layer peeling intensity enhancement type draws into a surface active material ethylene / methylmethacrylate in the corona layer, thus increasing the adsorption capability of the corona layer on the aluminum layer and having high aluminum layer peeling intensity performance which can not be exceeded by the common aluminum plating non-stretching polypropylene film.

Description

Technical field: [0001] The invention relates to a polypropylene film and a preparation method thereof, in particular to an unstretched polypropylene film and a preparation method thereof. Background technique: [0002] With the birth of unstretched polypropylene film (CPP), the rigidity, high transparency, high heat-sealing strength and wide processing range of CPP film products have increasingly replaced polyethylene film (PE) in heat-sealing bags. aspect position. [0003] At present, some products on the market are polyethylene film / melted polyethylene film / biaxially oriented polypropylene film (biaxially oriented polyester film), that is, PE / melted PE / BOPP (BOPET) for compounding and color printing. In China, dry compounding is basically adopted, that is, glue compounding is used. This compounding process has the advantages of strong compounding fastness and not easy to peel off, but it needs to use polyurethane coating, which has certain organic residual molecules, wh...

Claims

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Application Information

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IPC IPC(8): B32B27/32B32B27/30B29C47/06B29C47/78B29K23/00B29C48/08
CPCB29C48/08
Inventor 刘俊萍李芬香陆有金雷钢王宏霞
Owner 南京金中达新材料有限公司
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