Positive-ion gas release type double-effect composite fresh-keeping film

A composite preservation and gas release technology, applied in film/sheet release coatings, film/sheet adhesives, coatings, etc. and other problems, to achieve the effect of improving the humid environment and inhibiting the damage

Inactive Publication Date: 2020-01-17
青岛富强电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention proposes a positive ion gas release type double-effect fresh-keeping film, which solves the problems in the prior art that it does not have broad spectrum, does not have controllability, and has a short cycle

Method used

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  • Positive-ion gas release type double-effect composite fresh-keeping film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A positive ion gas release type double-effect composite fresh-keeping film, such as figure 1 As shown, it includes the main body of the film and the self-adhesive layer. The self-adhesive layer is set on the main body of the film; the main body of the film is a layer structure, which includes anti-fog layer 1, composite fresh-keeping coating 2, and polymer water-absorbing layer 3 from bottom to top. , slow release layer 4, isolation layer 5;

[0035] The anti-fog layer 1 is coated paper, and the coated film is set outward; the composite fresh-keeping coating 2 includes 10g ethylene-vinyl acetate copolymer, 1g C 4 h 6 and 1g polyhexamethylene biguanide hydrochloride and 0.2g citric acid; the polymer water-absorbing layer 3 is 10g polymer water-absorbing resin; the slow-release layer 4 is composed of 20g pyrosulfite, 1g polyethylene glycol, 5g paraffin, Composed of cyclodextrin and 1g of gum arabic; the isolation layer 5 is a polyester film with a thickness of 0.09-0.1 ...

Embodiment 2

[0042] The structure of a positive ion gas release type double-effect composite fresh-keeping film is the same as that of Example 1, and the formula of this example is:

[0043] The anti-fog layer 1 is coated paper, and the coating is set outward; the composite fresh-keeping coating 2 includes 10g natural rubber, 2gC 4 h 6and 1g polyhexamethylene biguanide propionate and 0.5g citric acid; the polymer water-absorbing layer 3 is 10g polymer water-absorbing resin; the slow-release layer 4 is made of 20g pyrosulfite, 20g bisulfite, 5g modified corn Starch, 5g glycerin, 15g paraffin, 20g ethyl cellulose and 5g polyvinyl acetate; the isolation layer 5 is a polypropylene film with a thickness of 0.09-0.1mm; the self-adhesive coating 6 is a solvent-free acrylic pressure-sensitive Glue is arranged on the isolation layer 5, and the self-adhesive coating 6 is also pasted with a self-adhesive film 7.

[0044] The preparation method and usage method are the same as in Example 1.

Embodiment 3

[0046] The structure of a positive ion gas release type double-effect composite fresh-keeping film is the same as that of Example 1, and the formula of this example is:

[0047] The anti-fog layer 1 is coated paper, and the coating is set outward; the composite fresh-keeping coating 2 includes 10g polyurethane binder, 3g C 4 h 6 And 2g polyhexamethylene guanidine nitrate and 1g citric acid; The polymer water-absorbing layer 3 is 10g polymer water-absorbing resin; PE, 30g of carboxymethylated corn modified starch, 5g of gum arabic, and 5g of polyvinyl acetate; the isolation layer 5 is a polypropylene film with a thickness of 0.09-0.1mm; the self-adhesive coating 6 is a solvent-free acrylic pressure-sensitive Glue is arranged on the isolation layer 5, and the self-adhesive coating 6 is also pasted with a self-adhesive film 7.

[0048] The preparation method is the same as in Example 1.

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Abstract

The invention provides a positive-ion gas release type double-effect composite fresh-keeping film, and aims to solve the problems of no broad spectrum or controllability and a short cycle in the priorart. The film includes a film main body and a self-adhesive layer, and the self-adhesive layer is arranged on the film main body; the film main body has a layer structure, and includes an anti-fog layer, a composite fresh-keeping coating, a polymer water-absorbing layer, a slow-release layer and an isolation layer in sequence from the bottom to the top; the composite fresh-keeping coating includes a binder, a bactericidal pre-substance and an activator; the slow-release layer is composed of pyrosulfite and / or bisulfite, a water retaining agent, a water blocking agent, an embedding agent and an adhesive; and the self-adhesive layer includes a self-adhesive coating, and the self-adhesive coating is arranged on the isolation layer. Sterilization gas can be released by a reaction of the composite fresh-keeping coating and the polymer water-absorbing layer, and since the polymer water-absorbing layer can control the absorption or release of water according to the environmental humidity, the purpose of the adjustable amount of the sterilization gas can be realized.

Description

technical field [0001] The invention relates to the technical field of fresh-keeping of fruits and vegetables, in particular to a positive-ion gas-releasing double-effect fresh-keeping film. Background technique [0002] In recent years, the output of vegetables and fruits in my country has increased rapidly, and the output of fruits ranks first in the world. Generally, it takes 2-5 days for these fruits and vegetables to go from the field to the hands of consumers. Due to the backwardness of fresh-keeping technology, a large number of fruits and vegetables will rot during this period, causing huge economic losses. [0003] It is mainly microorganisms that cause the rot of vegetables and fruits. As the maturity increases, the respiration intensity gradually increases. After reaching a certain peak, the respiration intensity decreases, and there is an obvious peak period. When the respiratory peak arrives, fruits and vegetables enter the aging stage, which is the turning poi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/21C09J7/50C09D123/08C09D5/14C09D7/63C09D105/16C09D7/61C09D7/65
CPCC08L2205/035C09D5/14C09D7/61C09D7/63C09D7/65C09D105/16C09D123/0853C09J7/21C09J7/50C09J2301/122C08L79/00C08K5/092C08L71/02C08K3/30
Inventor 李磊
Owner 青岛富强电子有限公司
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