Food Packaging Film Classification

- Feb 11, 2018 -

1. Photocatalytic inorganic antibacterial film

Antibacterial mechanism: photocatalytic antimicrobial agent is mainly TiO2, under the action of light on the surface can produce a large number of hydroxyl free radicals and oxygen free radicals, these two free radicals have a strong chemical activity, can make a variety of microorganisms Organic decomposition, which has antibacterial properties.

Application of photocatalytic inorganic antibacterial film. Since 1995, the first photocatalyst is available in Japan, food packaging.

2. Natural and polymeric antimicrobial film

Other antibacterial film also natural antibacterial film and antimicrobial polymer film. Their antibacterial mechanism is through the molecular chain charge and the role of microorganisms, thereby inhibiting the reproduction of microorganisms, play an antibacterial effect. For food packaging mainly chitosan, sorbic acid, curcumol.

3. Composite antimicrobial film

The effectiveness of the composite antimicrobial film is mainly reflected in the following aspects: prolonging the antibacterial cycle; producing antimicrobial properties at low concentrations; broadening the antimicrobial spectrum and inhibiting more microorganisms than any single antimicrobial film.

4. Inorganic antibacterial thin

Inorganic antibacterial agent is the use of silver, copper, zinc, titanium and other metals and their ions, bactericidal and antibacterial capacity of antibacterial agents. In the early 1980s, Japanese scientists began to add silver compounds directly to the resin, the first antimicrobial plastic film made of inorganic antimicrobial agents.

Antibacterial mechanism: As the inorganic antibacterial agents are dissolution-contact antibacterial agents, the antibacterial effect of inorganic antibacterial film is passive. There are two explanations for the antibacterial mechanism of metal ions.

One is the contact reaction mechanism. Inorganic antibacterial film metal ions in contact with microorganisms, the destruction of microbial protein structure, resulting in microbial death or dysfunction.

One is the reactive oxygen species mechanism. Micro-metal ions distributed on the surface of inorganic antibacterial film can absorb the energy in the environment, activate the oxygen in the air and water adsorbed on the surface of the packaging film to produce hydroxyl groups and reactive oxygen ions, which have strong redox ability Destroy the reproductive capacity of bacterial cells, inhibit or kill bacteria, resulting in antibacterial effect.

5. Organic antibacterial film

Antibacterial mechanism: The main mechanism of action of organic antibacterial agents is to gradually enter the cell by binding with the anion of the cell surface of the microorganism, or react with groups such as sulfhydryl on the cell surface to destroy the synthesis system of protein and cell membrane and inhibit the multiplication of microorganisms.

Zhongsu New Materials Technology(Hangzhou) Co.,Ltd is one of the best stretch film, vacuum packing, corona treatment, retort packaging, food packing manufacturers and suppliers in China, providing with stretch film free sample and with competitive price, welcome to buy customized products in stock from our factory.

Contact:Jerry Ma
Mob.(WhatsApp): +0086 13989490670 
Tel: +0086 571-86355968
Fax: +0086 571-86355977
Email:
jerry@sinoplast-pack.com

Web site:www.sinoplast-pack.com;  



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