Mildewproof preservative film and preparation method thereof

A fresh-keeping film and anti-mildew technology, applied in coatings, starch derivative coatings, chitin polysaccharide coatings, etc., can solve the problems of insignificant anti-mildew effect, difficult recycling, loss of original value, etc., and achieve less pores. , The effect of preventing growth and reproduction and preventing mildew

Inactive Publication Date: 2018-02-09
CHANGDE JINDE NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the food is in an environment with suitable oxygen and moisture, microorganisms will multiply in the food, causing the food to go moldy and lose its original value.
[0003] Traditional cling film is made of PE (polyethylene), PVC (polyvinyl chloride) and PVDC (polyvinylidene chloride), PET (polyester) or PP (polypropylene) as the main material. Although the traditional cling film It has a certain barrier effect on oxygen and water vapor, and can inhibit the circulation of oxygen and water vapor inside and outside the package to a certain extent, forming a local airtight environment and playing a certain role in freshness preservation, but the anti-mold effect is not obvious
Moreover, it is difficult to recycle the plastic wrap after use, and it is all disposable, which is very easy to cause serious pollution to the environment.

Method used

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  • Mildewproof preservative film and preparation method thereof
  • Mildewproof preservative film and preparation method thereof
  • Mildewproof preservative film and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0040] Please refer to image 3 , the present application also provides a method for preparing an anti-mold plastic wrap in an embodiment, including the following steps S110-S130.

[0041] S110: Provide raw materials for the anti-mold and fresh-keeping coating, including: 30%-60% of the main component, 0.1%-10% of the natural extract anti-fungal agent and 30%-65% of the solvent.

[0042] Specifically, the main component is selected from at least one of modified starch, water-soluble chitosan, modified agar, modified rosin and rosin derivatives, and the solvent is water or / and ethanol.

[0043] S120: uniformly mix the main component and the solvent to obtain a mixed liquid, and then uniformly mix the mixed liquid with a natural extract antifungal agent to obtain an antifungal and fresh-keeping coating.

[0044] It can be understood that in order to accelerate the dissolution, heating, stirring or ultrasonic treatment can be used during the mixing process.

[0045] Specificall...

Embodiment 1

[0054] The raw materials are provided, and the content by weight percentage includes: 30% of water-soluble chitosan, 9% of capsaicin, 0.5% of catechin, 0.3% of allicin, 0.2% of xanthanin and 60% of water.

[0055] Add the water-soluble chitosan and water into the reaction kettle, stir and mix evenly to obtain the mixed solution.

[0056] At a stirring speed of 800r / min, add capsaicin, catechin, allicin and xanthoxylin into the mixture successively dropwise. After the dropwise addition, continue to stir for 6 hours and mix evenly to obtain the anti-mildew and fresh-keeping coating.

[0057] After the anti-mildew fresh-keeping coating is ultrasonically oscillated for 20 minutes, press 6g / m 2 The amount is coated on one side of the PLA film by coating, and then treated at 85°C, 95°C, 120°C, 100°C, and 80°C for 1.5s respectively to obtain a mildew-resistant plastic wrap.

Embodiment 2

[0059] The raw materials are provided, and the content by weight percentage includes: 40% of water-soluble chitosan, 3% of capsaicin, 0.4% of catechin, 0.3% of gingerol, 0.2% of xanthanin, 0.1% of allicin and 56% of water.

[0060] Add the water-soluble chitosan and water into the reaction kettle, stir and mix evenly to obtain the mixed solution.

[0061] At a stirring speed of 1000r / min, add capsaicin, catechin, gingerol, allicin and xanthoxylin into the mixture successively. After the addition, continue to stir for 4 hours and mix evenly to obtain the anti-mold Preservative coating.

[0062] After the anti-mildew fresh-keeping coating is ultrasonically oscillated for 30 minutes, press 3g / m 2 The amount is coated on the upper surface of the PLA film by coating, and treated at 80°C, 90°C, 110°C, 95°C, and 80°C for 1s respectively; then press 3g / m 2 The amount is coated on the lower surface of the PLA film in the form of coating, and treated at 80°C, 90°C, 110°C, 95°C, and 80...

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Abstract

The invention relates to a mildewproof preservative film. The mildewproof preservative film comprises a base layer and a mildewproof preservative coating arranged on the base layer, wherein the base layer is a biodegradable plastic thin film; the raw materials of the mildewproof preservative coating comprise the following components in percentages by weight: 30% to 60% of main ingredients, 0.1% to10% of a natural extract mold inhibitor and 30% to 65% of a solvent; the main ingredients comprise at least one of modified starch, water-soluble chitosan, an agar modifier, modified rosin and rosinderivatives; and the solvent comprises water and/or ethyl alcohol. The mildewproof preservative film has preferable effects of water and oxygen blocking performance and mildewproof effect, and can bedegraded under a microbial action in nature, so that the mildewproof preservative film is free of pollution to the environment.

Description

technical field [0001] The invention relates to the technical field of food storage and preservation, in particular to an anti-mold preservation film and a preparation method thereof. Background technique [0002] As we all know, microorganisms widely exist in nature, and the growth and reproduction of microorganisms are very strong in an environment with sufficient nutrients, water and oxygen. Food itself contains protein, sugar and other components, which provide good nutritional conditions for the growth and reproduction of microorganisms. Therefore, when the food is in an environment with suitable oxygen and moisture, microorganisms will multiply in the food, causing the food to go moldy and lose its original value. [0003] Traditional cling film is made of PE (polyethylene), PVC (polyvinyl chloride) and PVDC (polyvinylidene chloride), PET (polyester) or PP (polypropylene) as the main material. Although the traditional cling film It has a certain barrier effect on oxyg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C09D105/08C09D103/04C09D105/12C09D193/04C09D7/63C08L67/04C08L67/02
CPCC08J7/0427C08J2367/02C08J2367/04C08J2403/04C08J2405/08C08J2405/12C08J2493/04C08K5/0058C08K2201/014C09D103/04C09D105/08C09D105/12C09D193/04
Inventor 田璐钟文罗臻张勇军韦雪雪
Owner CHANGDE JINDE NEW MATERIAL TECH CO LTD
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