Composite polyvinyl alcohol preservative film, preparation method and application thereof

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United States of America Patent

PATENT NO 12116470
APP PUB NO 20230374272A1
SERIAL NO

18126297

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Abstract

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A composite polyvinyl alcohol (PVA) preservative film, a preparation method and an application thereof are provided. The film includes PVA of 9-12 parts, modified silicon dioxide nanoparticles of 2-5 parts, antimicrobial of 0.3-2 parts and deionized water of 100 parts. Fruits and vegetables sensitive to sunlight have lower requirements for illumination while preserving. With PVA as matrix and silicon dioxide (SiO2) nanoparticles as modified materials, composite PVA is obtained by controlling a particle size of SiO2 and modifying its surface. The composite PVA preservative film takes advantages of different refractive indexes between PVA and SiO2 and controlling the particle size of SiO2, thereby having a low luminous transmittance. The preservative film has an effect of light-proof on fruits and vegetables suitable for light-proof storage, and improves its gas transmission and water resistance because of adding SiO2, thereby facilitating packaging preservation of the fruits and vegetables.

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Patent Owner(s)

Patent OwnerAddress
GUIZHOU MATERIAL INDUSTRIAL TECHNOLOGY INSTITUTENO 3491 BAIJIN AVENUE BAIYUN DISTRICT GUIYANG CITY GUIZHOU PROVINCE 550000 GUIYANG CITY GUIZHOU PROVINCE 550000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gao, Chengtao Guiyang, CN 1 0
Li, Juan Guiyang, CN 166 904
Luo, Shanshan Guiyang, CN 4 4
Qin, Shuhao Guiyang, CN 2 0
Song, Lu Guiyang, CN 10 9
Wang, Yanwen Tongren, CN 13 47
Zhang, Li Bijie, CN 2775 40019

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