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Lucifugal preservative film

A technology of cling film and film layer, applied in the direction of flexible covering, packaging, layered products, etc., can solve the problem of not being able to avoid light and other problems

Inactive Publication Date: 2015-07-08
ANHUI SHUNTONG PACKAGING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PE cling film plays a role in tightly packing the package. After the product is packaged, it blocks the entry of oxygen. The spontaneous viscosity of the cling film is also used in scientific experiments to isolate oxygen and dust, but it cannot solve the timely and convenient problem. Darkness problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: a light-proof fresh-keeping film, the fresh-keeping film is an inner and outer double-layer structure, the fresh-keeping film is composed of 90% inner film layer and 10% outer film layer, and the inner film layer is composed of 90% inner film layer and 10% outer film layer by weight percentage 50% LLDPE, 45% MLLDPE, 3.9% polyisobutylene, 0.1% antistatic agent SWJU-1, 0.5% antioxidant VC and 0.5% plasticizer acetyl tributyl citrate; the outer film layer is made of 40 %LLDPE, 33.5% MLLDPE, 5% polyisobutylene, 20% mixed solution of carbon black and chitosan, 0.5% antioxidant VC and 1% plasticizer acetyl tributyl citrate;

[0013] Wherein, the preparation method of the mixed solution of carbon black and chitosan is to add 3 g of carbon black to 100 ml of chitosan solution, and ultrasonically disperse it uniformly.

[0014] A method for preparing a light-proof fresh-keeping film is to weigh the ingredients according to the stated proportion, and after the inner...

Embodiment 2

[0015] Embodiment 2: a light-proof fresh-keeping film, the fresh-keeping film is an inner and outer double-layer structure, the fresh-keeping film is composed of 90% inner film layer and 10% outer film layer, and the inner film layer is composed of 90% inner film layer and 10% outer film layer by weight percentage 49% LLDPE, 45% MLLDPE, 5% polyisobutylene, 0.5% antistatic agent SWJU-1, 0.3% antioxidant VC and 0.2% plasticizer acetyl tributyl citrate; the outer film layer is composed of 89.6 %LLDPE, 0.2% polyisobutylene, 10% mixed solution of carbon black and chitosan, 0.1% antioxidant VC and 0.1% plasticizer acetyl tributyl citrate;

[0016] Wherein, the preparation method of the mixed solution of carbon black and chitosan is to add 5 g of carbon black to 100 ml of chitosan solution, and ultrasonically disperse it uniformly.

[0017] A method for preparing a light-proof cling film is to weigh the ingredients according to the stated ratio, and then mix the inner film layer mate...

Embodiment 3

[0018] Embodiment 3: a light-proof fresh-keeping film, the fresh-keeping film has an inner and outer double-layer structure, the fresh-keeping film is composed of 90% inner film layer and 10% outer film layer, and the inner film layer is composed of 90% inner film layer and 10% outer film layer by weight percentage 99.5% LLDPE, 0.2% polyisobutylene, 0.1% antistatic agent SWJU-1, 0.1% antioxidant VC and 0.1% plasticizer acetyl tributyl citrate; the outer film layer is composed of 43.1% LLDPE, 35 %MLLDPE, 3% polyisobutylene, 18% mixed solution of carbon black and chitosan, 0.1% antioxidant VC and 0.8% plasticizer acetyl tributyl citrate;

[0019] Wherein, the preparation method of the mixed solution of carbon black and chitosan is to add 1 g of carbon black to 100 ml of chitosan solution, and ultrasonically disperse it uniformly.

[0020] A method for preparing a light-proof cling film is to weigh the ingredients according to the stated ratio, mix the inner film layer material a...

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PUM

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Abstract

The invention discloses a lucifugal preservative film, which belongs to the field of film processing. The preservative film is of an internal-and-external double-layer structure and is composed of 90% of an internal film layer and 10% of an external film layer, wherein the internal film layer is prepared from, by weight, 40 to 99.6% of LLDPE, 0 to 50% of MLLDPE and 0.2 to 5% of polyisobutylene through mixing, and the external film layer is composed of 40 to 99.6% of LLDPE, 0 to 50% of MLLDPE, 0.2 to 5% of polyisobutylene and 10 to 20% of a mixed solution of carbon black and chitosan. The preservative film provided by the invention adopts a two-layer film structure, has a wide application scope, can be used for preserving food and can wrap the outer layer of glassware in virtue of the adhesion of the preservative film to exert a light source isolating effect; meanwhile, in scientific experiments, the preservative film can wrap a transparent glass bottle and the wrapped transparent glass bottle can replace a brown bottle in use, so the disadvantage that actual conditions in a brown bottle cannot be observed when the brown bottle is filled with a substance is overcome.

Description

technical field [0001] The invention relates to the field of film processing, in particular to a light-proof fresh-keeping film. Background technique [0002] PE cling film is a food-grade packaging material, which is almost always a household consumable. PE plastic wrap is mostly made of LLDPE (Linear Low Density Polyethylene). PE plastic wrap has a tight packaging effect on the package. After the product is packaged, it blocks the entry of oxygen. The spontaneous viscosity of the plastic wrap is also used in scientific experiments to isolate oxygen and dust, but it cannot solve the problem in a timely and convenient manner. Avoid light problems. SUMMARY OF THE INVENTION [0003] In order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a light-proof fresh-keeping film. [0004] For realizing the purpose of the present invention, technical scheme of the present invention is as follows: [0005] A light-proof fresh-keepi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/18B32B27/32C08L23/08C08L23/20C08L5/08C08K3/04C08K5/11B29C69/02B65D65/38
Inventor 李东霖
Owner ANHUI SHUNTONG PACKAGING MATERIAL
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