In life, food safety is the first priority, so the requirements for packaging are getting higher and higher. A good packaging bag can not only bring a healthier life, but also greatly enhance a product and let customers More favored, then let us introduce the basic common sense about food packaging bags:
Food packaging bags generally refer to sheet-like plastics having a thickness of less than 0.25 mm as a film, and flexible packaging made of plastic film is widely used in the food industry. Food packaging bags are various, they are transparent, flexible, have good water resistance, moisture resistance and gas barrier properties, good mechanical strength, chemical stability, grease resistance, easy to print, and can be heat sealed. Moreover, the commonly used food soft package is usually made up of two or more layers of different films, and can be generally divided into an outer layer, an intermediate layer and an inner layer according to the position.
What are the requirements for the performance of each layer of the commonly used food flexible packaging film? First, the outer film is generally printable, scratch-resistant, and resistant to media. Commonly used materials are OPA, PET, OPP, and coated film. The middle layer film generally has the functions of barrier, shading, physical protection, etc. Commonly used materials are BOPA, PVDC, EVOH, PVA, PEN, MXD6, VMPET, AL, and the like. Then the inner layer film generally has the functions of blocking, sealing, and anti-media. The commonly used materials are CPP, PE, and the like. In addition, some materials have the interaction of the outer layer and the intermediate layer. For example, BOPA can be used as an outer layer printing, and can also serve as an intermediate layer to provide a certain barrier effect and physical protection.
Commonly used food soft packaging film characteristics, in general, the outer material should have scratch resistance, puncture resistance, UV resistance, light resistance, oil resistance, organic resistance, heat resistance, stress crack resistance, printability, heat stability, low taste, low Stinky, non-toxic, glossy, transparent, shading, etc.; intermediate layer materials generally have impact resistance, compression resistance, puncture resistance, moisture resistance, gas barrier, fragrance retention, light resistance, oil resistance, organic resistance, heat resistance , resistance to stress cracking, double-sided composite strength, low odor, low odor, non-toxic, transparent, light-proof and other properties; then the inner layer material, in addition to some of the common properties of the outer layer and its own unique performance, must have Perfuming, low adsorption and anti-seepage properties. The current development of food packaging bags is:
1. Food packaging bags for environmentally friendly materials.
2. In order to reduce costs and save resources, food packaging bags are becoming thinner.
3. Food packaging bags are developing in the direction of special functionalization. The high barrier composite material will continue to increase the market capacity, and the high-barrier film which is easy to process in the future, has strong oxygen and water vapor resistance, and improves shelf life is the mainstream of supermarket food soft packaging in the future.
Dongguan Bite Packaging Materials Co., Ltd. is a large-scale company specializing in the production of food-grade composite packaging. It is a professional composite packaging bag manufacturer that uses new equipment to produce packaging bags and film rolls to provide comprehensive, environmentally friendly and safe packaging services for the market.