Preparation method of multi-layer composite cling film

A multi-layer composite, fresh-keeping film technology, used in coatings, flexible coverings, packaging, etc., can solve the problems of weak antibacterial ability and short action time, reduce the preparation cost, improve the adsorption capacity, and reduce the impurity group. the effect of points

Active Publication Date: 2018-06-22
中国水产舟山海洋渔业制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, edible fresh-keeping film has become a new development direction of fresh-keeping film technolo

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of preparation method of multi-layer composite plastic wrap, is characterized in that, comprises the following steps:

[0029] (1) Dissolve chitosan in 1% acetic acid solution, prepare a chitosan solution with a concentration of 1%, stir magnetically until it is completely dissolved and transparent, and obtain solution A;

[0030] (2) Dissolve food-grade gelatin in deionized water to prepare a 2% aqueous solution to obtain solution B.

[0031] (3) Mix A and B according to the volume ratio of 1:1, and stir until the mixture is uniform to obtain solution C.

[0032] (4) Add squid active peptide to solution B and stir evenly to obtain solution D, the mass fraction of squid active peptide in solution D is 0.1%.

[0033] (5) After solution C and solution D are centrifugally degassed, first spread solution C evenly on the acrylic plate, after drying, then spread solution D evenly on the film formed by solution C, and continue drying , and then evenly spread solution ...

Embodiment 2

[0043] A kind of preparation method of multi-layer composite plastic wrap, is characterized in that, comprises the following steps:

[0044] (1) Dissolve chitosan in 1% acetic acid solution, prepare a chitosan solution with a concentration of 1%, stir magnetically until it is completely dissolved and transparent, and obtain solution A;

[0045] (2) Dissolve food-grade gelatin in deionized water to prepare a 5% aqueous solution to obtain solution B.

[0046] (3) Mix A and B according to the volume ratio of 1:1, and stir until the mixture is uniform to obtain solution C.

[0047] (4) Add squid active peptide to solution B and stir evenly to obtain solution D, the mass fraction of squid active peptide in solution D is 0.2%.

[0048] (5) After solution C and solution D are centrifugally degassed, first spread solution C evenly on the acrylic plate, after drying, then spread solution D evenly on the film formed by solution C, and continue drying , and then evenly spread solution C ...

Embodiment 3

[0058] A kind of preparation method of multi-layer composite plastic wrap, is characterized in that, comprises the following steps:

[0059] (1) Dissolve chitosan in 1% acetic acid solution, prepare a chitosan solution with a concentration of 1%, stir magnetically until it is completely dissolved and transparent, and obtain solution A;

[0060] (2) Dissolve food-grade gelatin in deionized water to prepare a 3% aqueous solution to obtain solution B.

[0061] (3) Mix A and B according to the volume ratio of 1:1, and stir until the mixture is uniform to obtain solution C.

[0062] (4) Add squid active peptide to solution B, and stir evenly to obtain solution D, the mass fraction of squid active peptide in solution D is 0.3%.

[0063] (5) After solution C and solution D are centrifugally degassed, first spread solution C evenly on the acrylic plate, after drying, then spread solution D evenly on the film formed by solution C, and continue drying , and then evenly spread solution...

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Abstract

The invention relates to the technical field of cling films, and particularly relates to a preparation method of a multi-layer composite cling film. The preparation method of the multi-layer compositecling film comprises the following steps: (1) dissolving chitosan in a 1% acetic acid solution to obtain a solution A; (2) dissolving food-grade gelatin in deionized water to obtain a solution B; (3)mixing A with B to obtain a solution C; (4) adding a water solution of a squid active peptide into the solution B to obtain a solution D; and (5) carrying out centrifugal degassing on the solution Cand the solution D, then uniformly coating an acrylic plate with the solution C, carrying out drying, uniformly coating the film formed with the solution C with the solution D, carrying out drying, then uniformly coating the film formed by the solution D with the solution C, carrying out drying to form a film, carrying out balancing at room temperature for a certain time, and then removing a filmto obtain the composite cling film. The composite cling film provided by the invention has the advantages of strong mechanical property, difficult breakage, long service life and low cost.

Description

technical field [0001] The invention relates to the technical field of plastic wrap, in particular to a method for preparing a multilayer composite plastic wrap. Background technique [0002] Cling film is a kind of plastic packaging product, usually made of ethylene as the masterbatch through polymerization reaction, in the occasions of microwave oven food heating, refrigerator food preservation, fresh and cooked food packaging, etc., in family life, supermarket stores, hotels and restaurants and industrial production It is widely used in the field of food packaging. [0003] At present, edible fresh-keeping film has become a new development direction of fresh-keeping film technology, but the current edible fresh-keeping film has the problems of short action time and weak antibacterial ability. In order to solve the above problems, the present invention provides a preparation method of a multi-layer composite plastic wrap with long action time and strong antibacterial abil...

Claims

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Application Information

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IPC IPC(8): C08J7/04C08L89/00C08L5/08B65D65/42C08B37/08
CPCB65D65/42C08B37/0003C08B37/003C08J7/04C08J2389/00C08J2405/08
Inventor 刘宇姜维胡世伟李世杰
Owner 中国水产舟山海洋渔业制品有限公司
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