Low-temperature heat sealing aluminium-plated polyethylene blown film and vacuum aluminium-plated film

A low-temperature heat-sealing and blown film technology, which is applied to layered products, metal layered products, synthetic resin layered products, etc., can solve problems such as poor fastness of the aluminum plating layer, high sealing temperature, and difficult stiffness. , to achieve good stiffness and water vapor barrier properties, high dart impact strength, and good drafting properties

Active Publication Date: 2013-12-11
GLODSTONE PACKAGING JIAXING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the stiffness of the existing polyethylene blown film is not enough and difficult to process during the vacuum aluminum plating process, the fastness of the aluminum plating layer is not good after compounding, and if cast polypropylene is used for aluminum plating to make To solve the problem of high sealing temperature of the heat-sealing layer, thus providing an aluminized low-temperature heat-sealed polyethylene blown film and a vacuum aluminized film

Method used

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  • Low-temperature heat sealing aluminium-plated polyethylene blown film and vacuum aluminium-plated film
  • Low-temperature heat sealing aluminium-plated polyethylene blown film and vacuum aluminium-plated film

Examples

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Embodiment 1

[0020] An aluminized low-temperature heat-sealed polyethylene blown film, the composite layer includes the following components by weight: bimodal linear medium density polyethylene 35%, high density polyethylene 35%, ethylene-acrylic acid copolymer resin 30% , the base layer includes the following components by weight: bimodal linear medium-density polyethylene 45%, high-density polyethylene 55%, and the heat-sealing layer includes the following components by weight: bimodal linear medium-density polyethylene 30% %, high-density polyethylene 35%, low-density polyethylene 35%.

Embodiment 2

[0022] An aluminized low-temperature heat-sealed polyethylene blown film, the composite layer includes the following components in parts by weight: bimodal linear medium density polyethylene 30%, high density polyethylene 30%, ethylene-acrylic acid copolymer resin 40% , the base layer includes the following components by weight: bimodal linear medium-density polyethylene 40%, high-density polyethylene 60%, and the heat-sealing layer includes the following components by weight: bimodal linear medium-density polyethylene 27 %, high-density polyethylene 28%, low-density polyethylene 45%.

Embodiment 3

[0024] An aluminized low-temperature heat-sealed polyethylene blown film, the composite layer includes the following components in parts by weight: bimodal linear medium-density polyethylene 33%, high-density polyethylene 33%, ethylene-acrylic acid copolymer resin 34% , the base layer includes the following components by weight: bimodal linear medium-density polyethylene 48%, high-density polyethylene 52%, and the heat-sealing layer includes the following components by weight: bimodal linear medium-density polyethylene 32% %, high-density polyethylene 32%, low-density polyethylene 36%.

[0025] At a temperature of 190°C and a load of 2.16kg, the melt index of the ethylene-acrylic acid copolymer resin is 6.5-7.5 g per ten minutes, and the melt index of the bimodal linear medium density polyethylene is 0.1-7.5 g per ten minutes. 0.3g, the melt index of the high-density polyethylene is 1.5-2.5g per ten minutes, the melt index of the low-density polyethylene is 0.7-1.2g per ten mi...

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Abstract

The invention relates to a low-temperature heat sealing aluminium-plated polyethylene blown film. The blown film comprises a body, wherein the body is provided with a composite layer, a base layer and a heat sealing layer from outside to inside in sequence; the ratio of the thickness of the composite layer to the thickness difference between the body and the heat sealing layer is (2:5)-(3:5); the surface tension of the outer side wall of the composite layer is 36-40 dynes. The blown film has the advantages that the film prepared by mixing double-peak linear medium density polyethylene with high density polyethylene has high sealing strength and heat viscosity; the low temperature heat sealability of the film is improved via low density polyethylene; the film has good bonding fastness via ethylene-acrylic acid copolymer resins.

Description

technical field [0001] The invention relates to an aluminized low-temperature heat-sealed polyethylene blown film and a vacuum aluminized film. Background technique [0002] Composite films for flexible packaging are generally divided into three layers: printing layer, barrier layer and heat-sealing layer. film, PVDC coating film, etc.). Because the production process of aluminum foil is produced by rolling method, its thinnest thickness can only reach 0.0065mm, so the cost of aluminum foil is higher because the price of aluminum material is relatively expensive; aluminized film is coated with a thin layer of Aluminum, which significantly improves the barrier performance of the film and consumes very little aluminum, is very economical; other types of barrier materials are generally used in specific occasions, and most of them are expensive due to materials and processing. It is not widely used on ordinary composite films. [0003] At present, the commonly used aluminized...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B33/00B32B15/20
Inventor 赵国途卿前仲
Owner GLODSTONE PACKAGING JIAXING
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