Ultralow temperature heat-sealing tape-casting polypropylene aluminum plating film

A technology for casting polypropylene and aluminized films, used in the fields of lamination, rapid packaging, packaging, and printing, it can solve the problems of film delamination, film adhesion, and low heat sealing temperature, achieve good aluminization adaptability, reduce heat The effect of sealing temperature and reducing production cost

Inactive Publication Date: 2014-05-21
安徽双津实业有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

Since the ordinary polypropylene aluminized film uses copolymerized polypropylene as the heat-sealing layer, although the types of copolymerized polypropylene are different, the heat-sealing temperature of the film is also different, but the heat-sealing temperature of the film is far lower than that of polyethylene.
If polyethylene is simply selected as the heat-sealing layer, the produced film will have crystal points and delamination due to the incompatibility of polyethylene and polypropylene, and the interlayer strength will not meet the requirements.
Moreover, as the heat-sealing temperature decreases, the adhesion of the film during aluminum plating is also more serious, which brings serious adverse effects to the film aluminum plating.

Method used

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  • Ultralow temperature heat-sealing tape-casting polypropylene aluminum plating film

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Embodiment 1

[0012] An ultra-low temperature heat-sealed cast polypropylene aluminum-coated film. The base film is produced by a three-layer co-extrusion casting method. The three-layer structure is: a corona layer, an intermediate layer and a heat-sealing layer. The corona layer of the base film is vacuum-plated aluminized, and the layer thickness ratios of the corona layer, the intermediate layer and the heat-sealing layer structure are respectively 20% of the corona layer, 70% of the intermediate layer, and 10% of the heat-sealing layer. The corona layer is composed of polypropylene and maleic anhydride graft-modified polypropylene, the weight ratio of the polypropylene and maleic anhydride graft-modified polypropylene is 10:4; the middle layer is composed of identical Composed of stereotactic polypropylene; the heat-sealing layer is composed of polypropylene copolymer, anti-sticking agent and octamethylcyclotetrasiloxane in a weight ratio of 98:7:1.

[0013] The invention relates to an...

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Abstract

The invention discloses an ultralow temperature heat-sealing tape-casting polypropylene aluminum plating film, wherein a base film of the aluminum plating film is produced by adopting a three-layer co-extrusion tape-casting method, the three layers are a corona layer, an intermediate layer and a heat-sealing layer respectively; through performing vacuum aluminum plating on the surface of the corona layer of the base film, the ultralow temperature heat-sealing tape-casting polypropylene aluminum plating film is obtained; due to the adoption of the ultralow temperature heat-sealing tape-casting polypropylene aluminum plating film, the heat-sealing temperature can be effectively reduced, the aluminum plating adaptability is preferable, the crystal point and the stratification are avoided, the production efficiency is improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to an ultra-low temperature heat-sealed cast polypropylene aluminized film used in the fields of printing, compounding, and packaging, and is suitable for the fields of rapid packaging of food, medicine, and daily chemical products. Background technique [0002] With the advancement of technology, it is the general trend for flexible packaging machinery to develop towards high speed, automation and integration. As a flexible packaging material - ordinary copolymerized polypropylene, its heat sealing temperature is difficult to meet the high-speed instantaneous heat sealing of the new generation of packaging machinery need. Therefore, reducing the heat-sealing temperature has become an urgent requirement for upstream film suppliers in the printing and packaging industry. Since the ordinary polypropylene aluminized film uses copolymerized polypropylene as the heat-sealing layer, although the types of copolymerized polypropylene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/085B65D65/40
Inventor 唐新国王帮新唐健张治国
Owner 安徽双津实业有限公司
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