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Preparation method of antibacterial wrapping film for low-temperature storage

A technology for low-temperature storage and wrapping film, applied in the field of preparation of antibacterial wrapping film for low-temperature storage, can solve the problem of less emphasis on anti-microbial cross-contamination, etc., and achieve the effects of strong tolerance, broad antibacterial spectrum and stable chemical properties

Pending Publication Date: 2021-11-02
开贝科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing stretch films pay little attention to anti-microbial cross-contamination

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1, a kind of preparation method of antibacterial stretch film for low temperature storage, comprises the steps:

[0022] S1. Put 0.8% by weight sodium carboxymethylcellulose into deionized water, let it stand for 12 hours to make it fully swell, obtain sodium carboxymethylcellulose sol, and store it at room temperature for later use;

[0023] S2, adding 1.5% chitosan by weight and 0.5% nano-platinum chelate into the emulsification tank, stirring evenly, and emulsifying for 20 minutes;

[0024] S3, adding polyethylene with a weight percentage of 8% into the emulsification tank, heating to 60°C, and stirring evenly;

[0025] S4, adding the prepared sodium carboxymethyl cellulose sol into an emulsification tank, adding 1% propylene glycol by weight, adding deionized water to 100%, adjusting the pH to 2 with hydrochloric acid, so that the mixed solution is uniform without clots, Heating in a water bath at 65°C to fully mix the components, cooling to room tempera...

Embodiment 2

[0028] Embodiment 2, a kind of preparation method of antibacterial stretch film for low temperature storage, comprises the steps:

[0029] S1. Put 1.2% by weight sodium carboxymethyl cellulose into deionized water, let it stand for 12 hours to make it fully swell, obtain sodium carboxymethyl cellulose sol, and store it at room temperature for later use;

[0030] S2, adding 2% chitosan and 0.8% nano-platinum chelate in the emulsification tank by weight percentage, stirring evenly, and emulsifying for 20min;

[0031] S3, adding 10% polyethylene by weight into the emulsification tank, heating to 60°C, and stirring evenly;

[0032] S4, adding the prepared sodium carboxymethylcellulose sol into an emulsification tank, adding 1.6% propylene glycol by weight, adding deionized water to 100%, adjusting the pH to 1.5 with hydrochloric acid, so that the mixed solution is uniform without clots, Heating in a water bath at 65°C to fully mix the components, cooling to room temperature, and ...

Embodiment 3

[0035] Embodiment 3, a kind of preparation method of antibacterial stretch film for low temperature storage, comprises the steps:

[0036] S1. Put 1.5% by weight sodium carboxymethylcellulose into deionized water, let it stand for 12 hours to make it fully swell, obtain sodium carboxymethylcellulose sol, and store it at room temperature for later use;

[0037] S2, adding 3% chitosan and 1% nano-platinum chelate into the emulsification tank, stirring evenly, and emulsifying for 20 minutes;

[0038] S3, adding 12% polyethylene by weight into the emulsification tank, heating to 60°C, and stirring evenly;

[0039] S4, adding the prepared sodium carboxymethyl cellulose sol into an emulsification tank, adding 2% propylene glycol by weight, adding deionized water to 100%, adjusting the pH to 1 with hydrochloric acid, so that the mixed solution is uniform without clots, Heating in a water bath at 65°C to fully mix the components, cooling to room temperature, and vacuum degassing for ...

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PUM

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Abstract

The invention discloses a preparation method of an antibacterial wrapping film for low-temperature storage. The antibacterial wrapping film is prepared from effective components of chitosan, nano platinum chelate, sodium carboxymethyl cellulose, polyethylene and propylene glycol through a special production process. The antibacterial wrapping film not only retains the inherent properties of a common wrapping film, such as good tensile strength, tearing strength, transparency, self-adhesion and the like, but also has the characteristics of wide antibacterial spectrum, high temperature tolerance, no toxicity, no harm, good biodegradability, corrosion resistance, deodorization, safety, no peculiar smell and stable chemical properties, is suitable for freezing preservation and is also suitable for cold storage, thereby being a novel food outer packaging product with ecological health-care performance.

Description

technical field [0001] The invention relates to the technical field of antimicrobial films for inhibiting the growth of microorganisms, in particular to a preparation method of an antibacterial stretch film for low-temperature storage. Background technique [0002] In the food industry, especially fruits, vegetables, meat, soy products, and seafood need to be refrigerated or frozen. The above-mentioned food containers usually need to be covered with a stretch film for pallet packaging or bundle packaging, but ordinary Stretch film has no antibacterial function, and it is difficult to ensure that people in contact with it during transportation, storage and sales are free from bacterial contamination. [0003] At present, the stretch film products commonly used in the market are all made of vinyl masterbatch, and according to the different types of vinyl masterbatch, they are divided into the following three categories, namely PE stretch film, PVC stretch film and PVDC stretch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L23/06C08L1/28C08L5/08C08K5/053
CPCC08J5/18C08J2323/06C08J2401/28C08J2405/08C08K5/053
Inventor 谈翼辰刘洪伟李晓晶荆赟
Owner 开贝科技(苏州)有限公司
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