Food flexible packaging new materials development trend

food is closely related to people's health, food, clean * is * for attention, and the demand for food packaging is the extraordinarily strict. In food packaging category, plastic composite flexible packaging accounts for a large share of. The professor has made clear that the future of food flexible packaging: to carry out the new direction is to improve the existing plastic function, develop new varieties, intensity and insulated, cutting dosage, Thick wall) , repeated use, classification maintenance environment.

new high insulated plastic has been widely used in the

this kind of packing material for food not only can strengthen the maintenance function, and can reduce the amount of plastic, and can be repeated use. On demand high insulated maintenance of processed foods and vacuum packaging, inflatable packaging, usually to be packed in composite materials, in multi-storey complex joint guess must be more than a layer of high insulated material. The commonly used high insulated materials with aluminum foil, nylon, polyester, etc. With food demand for maintainability, insulated ethylene - very good Vinyl alcohol copolymer and polyvinyl alcohol also start to use. The development and the use of a few developed countries PEN ( Polyethylene naphthalate formic acid glycol ester) , bring many advantages to the food packaging. Chemical layout and PET PEN ( Polyethylene terephthalate) Similar, but the rigid forward greatly, oxygen resistance, water resistance than PET forward several times, and good uv absorbent, low gas adsorption, dressed food no taste, can be repeated use.

inorganic high isolation microwave food packaging materials will ChengXinChong

with the acceleration of the pace of life, can be directly used in microwave heating food to carry out the new hot bags into packaging category. Because the current made from aluminum foil and some plastic composite material of packaging is opaque, not easy to recover, and cannot be used in microwave processing defects, developed in recent years, SiOx data can be used as a substitute for plating. SiOx is plating on PET, PA, PP, such as base material of a thin layer of silicon oxide, it is not only very good insulated, and has excellent atmospheric environment adaptability. It insulated it from the influence of environmental humidity and temperature changes. SiOx coating with high isolation, high microwave permeability, transparency, and can be used in microwave processing of food flexible packaging, packaging container can be made into beverage and cooking oil, China has begun using. SiOx coating capital is higher, the mass production skill is not perfect, but because of its special function, capital will become the important packaging material.

the use of active packaging skills will become a trend

skills include packaging and active packaging packaging within the mutual effect between gas and food. Active packaging can effectively adhere to food nutrients and flavor. Because of information science, biological science and gas packaging, active packaging skills over the years to develop quickly. Such as oxygen, active packaging sterilization active packaging, etc. Sterilization is active active packaging sterilization, meanwhile, the combination of material and packing material system, is to sorbitol, sorbic acid salt, sodium benzoate, silver zeolite material added to the production of packaging container. Guess that then make forming into a container, make its slow release of active ingredients sterilization. Primary use in food packaging, active packaging related to bag yesterday with the physical way to cut off gas, water vapor and light, it plays an active in expanding food shelf life, automatic effect, can supply very good maintenance. Therefore, as a kind of intelligent active packaging development skills are being widely used.

in active packaging. Guess that in order to control a specific gas in packaging, use of chemicals can absorb or release specific gases. Its function system includes use of fungicides, deoxidizer, odor absorbent or release agent, light isolation agent, antifoggant, anti-sticking agent, stabilizer and enzyme inhibitors, etc. Now finish maybe will complete other active packaging system are: contain antioxidant film, odor absorption and release system, bond film, anti-fog film resistance, resistance and light tones ricoh components, etc. Active packaging is considered revolutionary change of packaging industry.