Food Packaging Film Requirements

- Feb 11, 2018 -

There are many ways to prepare food antimicrobial packaging films. One is the antibacterial agent made of antibacterial masterbatch, through the antibacterial agent or antibacterial masterbatch and resin monolayer extrusion or salivation prepared, but also by the surface layer and other layers coextruded to form an antibacterial composite membrane. Another is obtained by coating or vapor-depositing an antibacterial agent on a resin film.

For antibacterial masterbatch antibacterial film obtained, due to the thin film itself, thus requiring smaller particle size antibacterial particles, and by the relatively narrow particle size distribution or can be dissolved in the organic resin antibacterial agent. General antibacterial agent or antibacterial masterbatch added mechanical properties of the film is not obvious, nor the printing performance of the film has no adverse effects. However, some of the membrane barrier properties have a certain impact, so the choice of antibacterial agent and antibacterial masterbatch should pay attention to the antibacterial agent and antibacterial masterbatch on the performance of the film, select the appropriate antibacterial agent, to ensure the performance of the package Meet the use requirements. The general choice of packaging materials are LDPE, LLDPE, EVA, cellulose film, edible film.

Different methods of applying or vapor-depositing antibacterial agents to the film can vary widely in their barrier properties and can affect the quality of the final product if the substrate is damaged during coating and coating. Surface properties of plastic film surface, the performance of the polarity, surface roughness, surface oxygen, the percentage of nitrogen atoms will affect the film and the antibacterial agent bond strength, thus affecting the antibacterial properties. In addition, before the antibacterial agent is applied or deposited on the film, the surface of the film substrate should be pre-treated to improve the surface land potential and improve the bonding strength. Packaging film substrates for coating or evaporation are generally PET, PA, PVC, BOPP, LDPE and so on.

In addition to satisfying the mechanical properties, printing properties, display properties and other properties of packaging materials, the antimicrobial packaging film has high requirements for the hygienic performance of packaging materials for foodstuffs. China's national standard GB-9687 provides for the health requirements of food packaging materials, materials require normal color, odorless, odorless, no foreign body, and in the evaporation residue, potassium permanganate consumption, heavy metal content, decolorization experiments In line with the corresponding requirements. The FDA also made specific provisions on the composition of food packaging materials, specifications of additives, conditions of use, requirements for dissolution, chronic toxicity test for dissolution of food packaging materials, and requirements for sub-chronic toxicity tests.

Composite antimicrobial agent for food packaging, organic antimicrobial triazine antifungal agent and pyridine antimicrobial agent in the Japanese market Composite antimicrobial triazine antimicrobial agent, the antibacterial effect of 3- 4 times. The national anti-microbial agent and inorganic antibacterial agent developed by National Engineering Research Center of National Engineering Plastics Engineering Co., Ltd. overcome the problem of single function of KFHS series antibacterial agent. In addition, the nano-TiO2 can be added to the inorganic silver antibacterial agent in the food packaging film to solve the problem of the antibacterial effect of the silver antibacterial agent slowly.

         Hangzhou City, Zhejiang Province, China
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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