Food packaging plastics made of special materials

Wood flour plastic This is a kind of wood flour plastic packaging material researched and developed by Japanese scientists recently from pine wood. Polyurethane is produced by making polyhydric alcohol from wood flour and reacting with isocyanate. This wood powdered plastic is extremely heat resistant and can be biodegraded and can be used to make temperature-resistant packaging bags.

Not long before maize plastics, American researchers developed a corn plastic packaging material that was easily decomposed. It is made of corn starch mixed with polyethylene. This plastic is suitable for making food packaging integrated bags. The package can be quickly dissolved in water, which can avoid contact with contamination sources and bacteria.

Rapeseed Plastic A rapeseed plastic packaging material was recently developed by the United Kingdom. It extracts three genes that produce plastics from the bacteria that make biopolymers and then transfers them to the rapeseed plants. After a period of time, a plastic polymer liquid is produced, and a rapeseed plastic can be obtained by refining and processing. The packaging material or snack food packaging material made of this plastic can be decomposed on its own without any contaminated residue.

Wheat plastic This is the use of wheat flour added glycerol, glycol, polysilicone, etc. mixed dry, and then heated by 150 kg per square meter pressure hot plastic plastic film translucent. The advantage of packaging foods with wheat plastics is that they can be decomposed by microorganisms.

Soybean Plastics U.S. uses soybean-derived proteins to make plastic-like food packaging materials that can replace plastics synthesized from petroleum. This technique is to soak soybeans, grind them, separate proteins, and dry the protein solution to remove the water. This protein powder is then mixed with other ingredients and additives to make an edible film or coating for food packaging. This material has good strength, elasticity and moisture resistance.

Fresh plastic film American researchers put a plastic film containing a chemical substance called AMmosorb in the food packaging bag to remove oxygen from the package, ensure the freshness and quality of the food, and ensure that the packaged food can be preserved. No deterioration for a long time. The chemical substance is in a dormant state until it is irradiated with special light waves. Chemical effects begin to appear when exposed to special light waves. This means that there is no need for complex oxygen treatment when packaging foods. As long as the final process of food packaging, special light waves can be.

Bacterial plastic British researchers recently developed a PHB bacterial plastic. It uses sugar to grow a kind of bacteria, and then it is processed to make it similar to polypropylene. This material is non-toxic and easy to biodegrade. It is an ideal material for processing food packaging bags. At the same time, there is no pollution to the environment after abandonment.

Testable Toxic Plastic Film A plastic film made by Canadian Toxin Plastic Board that can determine whether food is toxic or not. This kind of plastic cling film coated with a non-toxic, non-polluting packaged food and harmless to the human body is deformed when it encounters certain toxins (it can be changed from round to flat). It was determined that this cling film can detect Salmonella, Trichoderma, Escherichia and Listeria and other pathogens.

Smart Fresh Plastic Film In food packaging, smart plastic fresh plastic films made from truly efficient materials have recently been developed. It can not only prevent pollution, but also has good functions such as preventing the sun from shining and preventing oxidation. This smart package can even send a warning signal when the package is damaged or the storage temperature is too high.

Source of information: pack.cn