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Easy-to-degrade antioxidation multilayer composite preservation film

A multi-layer composite and plastic wrap technology, which is applied in the field of packaging films, can solve the problems of white pollution, unavoidable food oxidative deterioration, and low natural degradation rate of plastic wrap, so as to reduce food oxidative deterioration, excellent sealing effect, and improve The effect of preservation effect

Inactive Publication Date: 2018-10-16
HEFEI JINTONGWEI LOW TEMPERATURE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above three kinds of films mainly carry out fresh-keeping treatment by isolating the air. When wrapping food, harmful substances are isolated by sealing, but this kind of preservative film cannot avoid the oxidative deterioration of food by natural light; The natural degradation rate is low, and a large amount of white pollution will be generated during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An easily degradable anti-oxidation multilayer composite fresh-keeping film, the fresh-keeping film has a three-layer structure from top to bottom, the upper layer is a structural layer, the middle layer is a light-shielding layer, and the inner layer is a sealing layer, wherein the sealing layer is made of polyethylene.

[0026] The structural layer is made of easily degradable biofilm material. According to the mass parts, the composition of the biofilm includes: 70 parts of PHA resin, 10 parts of polyvinyl alcohol, 4 parts of acetyl triethyl citrate, 1 part of n-butyl stearate, shell 4 parts of polysaccharide, 2 parts of nano silicon dioxide, 2 parts of monoalkoxy titanate coupling agent, 1 part of plasticizer, 2 parts of film-forming aid.

[0027] The shading layer is made of black polyvinyl chloride. According to the mass parts, the composition of black polyvinyl chloride includes: 15 parts of superfine carbon black, 40 parts of polyvinyl chloride, 2 parts of coupli...

Embodiment 2

[0035] An easily degradable anti-oxidation multilayer composite fresh-keeping film, the fresh-keeping film has a three-layer structure from top to bottom, the upper layer is a structural layer, the middle layer is a light-shielding layer, and the inner layer is a sealing layer, wherein the sealing layer is polyvinylidene chloride Vinyl material.

[0036] The structural layer is made of easily degradable biofilm material. According to the mass parts, the composition of the biofilm includes: 80 parts of PHA resin, 13 parts of polyvinyl alcohol, 7 parts of acetyl triethyl citrate, 2 parts of n-butyl stearate, shell 6 parts of polysaccharide, 4 parts of nano-silica, 3 parts of monoalkoxy titanate coupling agent, 3 parts of plasticizer, and 5 parts of film-forming aid.

[0037] The shading layer is made of black polyvinyl chloride. According to the parts by mass, the composition of black polyvinyl chloride includes: 20 parts of superfine carbon black, 45 parts of polyvinyl chloride...

Embodiment 3

[0045] An easily degradable anti-oxidation multi-layer composite fresh-keeping film, the fresh-keeping film has a three-layer structure from top to bottom, the upper layer is a structural layer, the middle layer is a light-shielding layer, and the inner layer is a sealing layer, wherein the sealing layer is made of polyethylene or Polyvinylidene chloride material.

[0046] The structural layer is made of easily degradable biofilm material. According to the mass parts, the composition of the biofilm includes: 75 parts of PHA resin, 12 parts of polyvinyl alcohol, 5 parts of acetyl triethyl citrate, 1.5 parts of n-butyl stearate, shell 5 parts of polysaccharide, 3 parts of nano silicon dioxide, 2.5 parts of monoalkoxy titanate coupling agent, 2 parts of plasticizer, 3 parts of film-forming aid.

[0047] The light-shielding layer is made of black polyvinyl chloride. According to the parts by mass, the composition of black polyvinyl chloride includes: 18 parts of superfine carbon b...

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PUM

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Abstract

The invention relates to the technical field of packaging films, in particular to an easy-to-degrade antioxidation multilayer composite preservation film which comprises a structural layer, a light shading layer and a sealing layer. The sealing layer is made of polyethylene or polyvinylidene chloride, the structural layer is made of an easy-to-degrade biofilm and composed of PHA resin, polyvinyl alcohol, acetyl triethyl citrate, n-butyl stearate, chitosan, nano silicon dioxide, monoalkoxy titanate coupling agent, plasticizer and film forming aid, the light shading layer is made of black polyvinyl chloride, and a thickness ratio of the structural layer, the light shading layer and the sealing layer is 4:1:1. The preservation film can preserve food through sealing and shading, so that food preservation effect is improved; the preservation film is higher in degradability and more environment-friendly.

Description

technical field [0001] The invention relates to the technical field of packaging films, in particular to an easily degradable anti-oxidation multilayer composite fresh-keeping film. Background technique [0002] Plastic wrap is a kind of kitchen utensil, mainly used for cooking and holding food in the kitchen, or for making some materials that can be cleaned easily. Conventional plastic wrap is divided into three types: polyethylene film, polyvinyl chloride film and polyvinylidene chloride film. Among them, the production cost of polyvinyl chloride film is relatively low, but plasticizers or other toxic and harmful substances may appear at high temperatures. The leakage of ingredients will cause harm to human health; PVC film is safer to use at low temperature. Relatively, polyethylene film and polyvinylidene chloride film are safer and can be used at high and low temperatures without causing harm to the human body. At the same time, the production cost is relatively high. ...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/20B32B27/30B32B27/32B32B27/36B32B33/00B29D7/01
Inventor 武行峰
Owner HEFEI JINTONGWEI LOW TEMPERATURE TECH CO LTD
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