Food is closely related to people's health, and the health and safety of food is also the most concerned, so the requirements of food packaging are particularly strict. In the field of food packaging, plastic composite flexible packaging accounts for a considerable proportion. Experts from red wine bag manufacturers have clearly pointed out the new development direction of food flexible packaging in the future: improving the existing plastic properties, developing new varieties, improving strength and barrier property, reducing consumption (thick wall), reusing, sorting and recycling, and protecting the environment.
New high barrier plastics have been widely used
This kind of packaging material can not only enhance the protection function of food, but also reduce the amount of plastic, and even can be reused. For the processing food with high barrier protection, vacuum packaging and inflatable packaging, composite materials are generally used for packaging, and there must be more than one layer of high barrier materials in multi-layer composite materials. Commonly used high barrier materials are aluminum foil, nylon, polyester, etc. With the improvement of food protection requirements, ethylene vinyl alcohol copolymer and polyvinyl alcohol with better barrier properties are also applied. At present, pen (poly (ethylene naphthalene dicarboxylate) has been developed and applied in developed countries, which brings many advantages to food packaging. The chemical structure of pen is similar to that of pet (polyethylene terephthalate), but its rigidity is greatly improved. The oxygen resistance and water resistance of pen are several times higher than that of pet. Moreover, it has good ultraviolet absorption and low gas adsorption. The filled food has no taste and can be reused.
Inorganic high barrier microwave food packaging materials will become a new favorite
With the accelerated pace of life, food packaging which can be directly used for microwave heating has become a new hot spot in the field of packaging. As the packaging made of aluminum foil and some plastic composite materials is opaque, not easy to recycle, and can not be used for microwave processing, the SiOx coated material developed by red wine bag manufacturers in recent years can be used as a substitute. SiOx is a kind of thin-layer silicon oxide coated on pet, PA, PP and other substrates. It not only has better barrier property, but also has excellent adaptability to atmospheric environment. Its barrier property is hardly affected by the changes of ambient humidity and temperature. SiOx coating has high barrier, high microwave permeability and transparency. It can be used in soft packaging of food processed by microwave, and can also be made into packaging container of beverage and edible oil. The cost of SiOx coating is high and the mass production technology is not perfect. However, due to its special properties, SiOx will become an important packaging material in this century.
The application of active packaging technology will become a trend
Active packaging technology includes the interaction between the packaging and the gas and food inside the packaging. Active packaging can effectively maintain the nutrition and flavor of food. Due to the progress of material science, biological science and gas packaging, the active packaging technology has developed rapidly in recent years. Such as deoxidization active packaging, sterilization active packaging, etc. Among them, the sterilization active packaging is a system combining active sterilization materials and packaging materials. Sorbitol, sorbate, sodium benzoate, silver zeolite and other substances are added to the materials for manufacturing packaging containers, and then they are manufactured and processed into containers to slowly release the sterilization active ingredients. Active packaging is mainly used in food packaging. Compared with the past physical methods to block gas, water vapor and light, it plays an active and active role in extending the shelf life of food and can provide better protection. Therefore, active packaging as an intelligent technology is widely developed and applied.
In order to control the specific gases in the active packaging materials, red wine bag manufacturers use chemicals that can absorb or release specific gases. Its functional system includes the use of fungicides, deoxidizers, odor absorbents or releasers, light blocking agents, antifogging agents, anti adhesion agents, stabilizers and enzyme inhibitors. Other active packaging systems that have been realized or will be realized include: antioxidant film, odor absorption and release system, anti adhesion film, antifogging film, light blocking and light regulating components, etc. Active packaging is regarded as a revolutionary change in the packaging industry. http://www.ycritai.cn/
Dongguan Beite packaging materials Co., Ltd
Aluminum foil packaging bags, mask bags, self-supporting zipper bags, eight side sealing bags, red wine bags, dog food bags, beverage bags, bags in boxes, wrapped films, perforated fruit bags.