Antibacterial high barrier food wrapping film and preparation method thereof

Abstract

The invention discloses antibacterial high barrier food wrapping film and a preparation method thereof. The film is prepared from ethylene vinyl alcohol copolymer, polyurethane, polyvinyl acetal, a compound silicate mineral additive and a silane coupling agent KH-550. The antibacterial high barrier food wrapping film takes the ethylene vinyl alcohol copolymer, the polyurethane, the polyvinyl acetal and the compound silicate mineral additive as materials of the wrapping film, based on the ethylene vinyl alcohol copolymer, the polyurethane, the polyvinyl acetal, the compound silicate mineral additive and other materials are added, the blending technology is adopted, and the wrapping film is obtained through an extrusion mechanism, so that the antibacterial performance, barrier performance and other performance of the wrapping film are greatly improved.

Description

technical field [0001] The invention relates to the technical field of food packaging films, in particular to an antibacterial high-barrier food packaging film and a preparation method thereof. Background technique [0002] Food packaging film refers to a film container that is in direct contact with food and is used to hold and protect food. It is a very common packaging film, which is divided into paper packaging film, polymer packaging film, aluminum foil packaging film and the above composite Packaging film, in recent years, food quality and quality safety have attracted more and more attention from the society along with the increasing development of science and technology. Food packaging film is an important material to ensure food safety and extend the shelf life of food. Its properties and functions have also attracted much attention. , with the improvement of the economic level, the food packaging industry has developed rapidly, and the use of packaging materials ha...

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Problems solved by technology

[0003] In the prior art, the high barrier property of food packaging film is poor, it is difficult to completely prevent the invasion of moisture and oxygen, and at the same time, the antibacterial property is poor, resulting in easy corruption of food. Chinese patent document (publication number: CN103448336B) discloses an antibacterial packaging film, including The nano antibacterial layer, the barrier layer, the outer layer and the bonding layer connecting the nano antibacterial layer, the barrier layer and the outer layer, wherein the nano antibacterial layer includes 70 to 150 parts of LDPE and 20 to 60 parts of LLDPE by weight components, 30-50 parts of silver ion antibacterial agent, 4-8 parts of polyethylene wax, 3-7 parts of stearic acid, the barrier layer of this invention is ethylene-vinyl alcohol copolymer, and ethylene-vinyl alcohol copolymer is used as the raw material of the barrier layer , the barrier performance is not very good, and the antibacterial property of this invention is mainly provided by the silver ion antibacterial agent, and the antibacterial performance needs to be further improved

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