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Foamed packaging material

A packaging material, foaming technology, applied in the field of packaging materials, can solve the problems of human body and the environment, and harmful substances exceeding the standard.

Active Publication Date: 2013-10-30
SHANGHAI YIZHUO PACKAGE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing formula is 64% of EVA (ethylene vinyl acetate copolymer) particles, 9% of azodicarbonamide foaming agent, 18% of 140 mesh talc powder, 4.5% of zinc oxide powder, 4.5% of PL40 bridging agent, a total of 11kg, Formamide, polycyclic aromatic hydrocarbons, paraffin and other harmful substances contained in foam packaging materials using this formula exceed the standard, of which formamide 5090mg / kg (allowable value ≤ 30mg / kg), polycyclic aromatic hydrocarbons 200mg / kg ( Allowable value 10mg / kg), paraffin 0.973 (allowable value ≤ 0.1%), harmful to human body and environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A foam packaging material, characterized in that by weight, the formula of the material is: 82 parts of EVA particles, 15 parts of EVA master batches, 3 parts of oxybisphenylhydrazide, wherein in the EVA master batches, 8 parts of EVA particles Parts, 5 parts of azodicarbonamide blowing agent, 1 part of dicumyl peroxide, 1 part of zinc oxide powder. (The weight of each serving is 100g)

[0021] Mix the above materials into a glued solid state, and knead them into blocks with a size of 500*200*20mm, heat them on a vulcanizer to 160 degrees for 60 minutes, so that the chemical substances contained in them can be activated After chemical reaction, the weight remains unchanged after vulcanization, and the volume increases to 12.5 times of the original; put the vulcanized semi-finished product into the foaming machine for heating and foaming to form a plate, the heating temperature is 175 degrees, and the heating temperature is 60 Minutes, so that the chemical substances co...

Embodiment 2

[0023] A foam packaging material, characterized in that by weight, the formula of the material is: 78 parts of EVA particles, 20 parts of EVA master batches, 2 parts of oxybisphenylhydrazide, wherein in the EVA master batches, 10 parts of EVA particles Parts, 7 parts of azodicarbonamide blowing agent, 1.5 parts of dicumyl peroxide, 1.5 parts of zinc oxide powder. (The weight of each serving is 100g)

[0024] Mix the above materials into a glued solid state, and knead them into blocks with a size of 500*200*20mm, heat them on a vulcanizer to 160 degrees for 60 minutes, so that the chemical substances contained in them can be activated After the chemical reaction, the weight remains unchanged after vulcanization, and the size becomes 13 times the original volume; put the vulcanized semi-finished product into the foaming machine for heating and foaming to form a plate, and the heating temperature is 170 degrees. Heat for 60 minutes to make the chemical substances contained in it...

Embodiment 3

[0026] A foam packaging material, characterized in that by weight, the formula of the material is: 86 parts of EVA particles, 10 parts of EVA master batches, 4 parts of oxybisphenylhydrazide, wherein in the EVA master batches, 5 parts of EVA particles 4 parts, 4 parts of azodicarbonamide blowing agent, 0.5 part of dicumyl peroxide, 0.5 part of zinc oxide powder. (The weight of each serving is 100g)

[0027] Mix the above materials into a glued solid state, and knead them into blocks with a size of 500*200*20mm, heat them on a vulcanizer to 160 degrees for 60 minutes, so that the chemical substances contained in them can be activated After the chemical reaction, the weight remains unchanged after vulcanization, and the size becomes 11 times the original volume; the vulcanized semi-finished product is heated and foamed in a foaming machine to form a plate, and the heating temperature is 170 degrees. Heat for 60 minutes to make the chemical substances contained in it react again...

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PUM

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Abstract

The invention discloses a foamed packaging material which is characterized by comprising the following components in percentage by weight: 77-87% of EVA (ethylene-vinyl acetate) granule, 10-20% of EVA master batch and 2-4% of amine remover. The raw materials in the formula are banburied, vulcanized, subjected to die pressing, cooled and cut into a proper shape, thereby preparing the foamed packaging material. The invention is smellless and environment-friendly, is harmless to both the human body and environment, and can conform to multiple detection standards.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a foam packaging material. Background technique [0002] Foam packaging materials can usually be used for electronic and electrical products, hardware tools, automobile and motorcycle accessories, sports equipment, home accessories, children's toys, cosmetics, accessories, food and gift packaging. The existing formula is 64% of EVA (ethylene vinyl acetate copolymer) particles, 9% of azodicarbonamide foaming agent, 18% of 140 mesh talc powder, 4.5% of zinc oxide powder, 4.5% of PL40 bridging agent, a total of 11kg, Formamide, polycyclic aromatic hydrocarbons, paraffin and other harmful substances contained in foam packaging materials using this formula exceed the standard, of which formamide 5090mg / kg (allowable value ≤ 30mg / kg), polycyclic aromatic hydrocarbons 200mg / kg ( Allowable value 10mg / kg), paraffin 0.973 (allowable value ≤ 0.1%), harmful to human body and environment. ...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L31/04C08J9/10C08K13/02C08K3/22
Inventor 陈强
Owner SHANGHAI YIZHUO PACKAGE MATERIAL
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