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Gas phase anticorrosive thin film of thermal contraction

A heat-shrinkable film and gas-phase anti-rust technology, which is applied in the field of improved gas-phase anti-rust film, can solve problems such as poor anti-rust performance, and achieve the effects of reducing space occupation, good anti-rust, and good packaging effect

Inactive Publication Date: 2006-07-05
李延明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing vapor-phase anti-rust packaging film can only achieve simple sealing packaging, and the vapor-phase anti-rust agent only slowly volatilizes in the packaging bag, and the anti-rust performance is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The gas-phase antirust heat-shrinkable film of the present invention is composed of an inner layer and an outer layer compounded together, and the weight percentage of the inner layer ingredients is composed of: 75% of low-pressure polyethylene, 13.6% of linear low-pressure polyethylene, metallocene polyethylene 8%, gas-phase antirust agent 3%, phthalocyanine blue pigment 0.4%;

[0017] The composition weight percentage of the outer layer is: 80% of low-pressure polyethylene and 20% of high-density polyethylene.

[0018] The inner layer and the outer layer are formed by co-extruding compound blow molding of the inner and outer layer ingredients through an extruder, the film thickness is 12 μm, and the inner layer thickness accounts for 60% of the film thickness.

Embodiment 2

[0020] The gas-phase antirust heat-shrinkable film of the present invention is composed of an inner layer and an outer layer compounded together, and the weight percentage of the inner layer ingredients is composed of: 68.5% of low-pressure polyethylene, 10% of linear low-pressure polyethylene, and metallocene polyethylene. 15%, gas phase antirust agent 6%, phthalocyanine green pigment 0.5%;

[0021] The composition weight percentage of the outer layer is as follows: 90% of low-pressure polyethylene and 10% of high-density polyethylene.

[0022] The inner layer and the outer layer are formed by co-extruding compound blow molding of the inner and outer layer ingredients through an extruder, the film thickness is 10 μm, and the inner layer thickness accounts for 70% of the film thickness.

Embodiment 3

[0024] The gas-phase antirust heat-shrinkable film of the present invention is composed of an inner layer and an outer layer compounded together, and the weight percentage of the inner layer ingredients is composed of: 71.2% of low-pressure polyethylene, 7% of linear low-pressure polyethylene, metallocene polyethylene 13%, gas phase antirust agent 8%, phthalocyanine blue pigment 0.8%;

[0025] The composition weight percentage of the outer layer is: 85% of low-pressure polyethylene and 15% of high-density polyethylene.

[0026] The inner layer and the outer layer are formed by co-extruding compound blow molding of the inner and outer layer ingredients through an extruder, the film thickness is 14 μm, and the inner layer thickness accounts for 50% of the film thickness.

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Abstract

A gaseous rust resistant thermo shrinkable membrane consists of coupled inner and outer layer, within which the inner layer by weight comprises 60~80% low-density polyethylene, 5~20% linear low-density polyethylene, 5~15% metallocene polyethylene, 5~10% gaseous rust resistant agents and 0.2~1% organic pigments while the outer layer by weight comprises 75~95% low-density polyethylene and 5~25% high-density polyethylene. The gaseous rust resistant membrane in this invention is thermo shrinkable. When made into packages for packaging metallic products and components, the volume in the packages is greatly reduced by heating, which saves the spaces taken by packages, and meanwhile the rust resistant agents quickly spread to the whole space due to the heat and thus perform good rust resistant effects. The packages from the membrane in this invention are applicable in packaging precision instruments, metal tools, automobile components and electric and electronic devices.

Description

technical field [0001] The invention relates to an improved vapor phase antirust film, which is used for the packaging of metal products and parts, and has antirust effect. Background technique [0002] Vapor-phase anti-rust packaging film is made into packaging bags, and the gas-phase anti-rust agent will slowly volatilize in the packaging bags, which can protect the metal products and components in the packaging bags against rust. The existing vapor-phase anti-rust packaging film can only realize simple sealing packaging, and the vapor-phase anti-rust agent only slowly volatilizes in the packaging bag, and the anti-rust performance is not good. It is the goal that people are constantly pursuing to improve the ingredients, realize the adjustment of different properties, and improve the anti-rust performance. Contents of the invention [0003] The purpose of the present invention is to provide a new gas-phase anti-rust heat-shrinkable film, which can shrink-pack products,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06B29C49/04B32B27/32
Inventor 李延明
Owner 李延明
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