Nozzle bag with what material the most safe?

　　Used for packing of milk, wine and other liquid nozzle bag printing, is the development of a packing method, especially to speed the development of high temperature cooking liquid packaging bags and faster, for example PE film packaging bags of milk. So, how to judge the quality of liquid packaging film is good or bad?

　　（1） nozzle bag packaging film of the static and dynamic friction coefficient is low, usually between 0.2 -- 0.4, filling and packaging machine so that we can in a short period of time sensitive filled in high-speed filling; high friction coefficient, low filling speed packaging planning, lack of will fill in a short period of time.

　　（2） surface printing fastness is better milk packaging film, heat resistant to pasteurization was filled, but also to ensure that the ink does not occur in the fall and 20 C storage environment. Because of （1） and （2） are the two functions of hostile to, the accurate selection of ink and color masterbatch.

　　（3） have good heat sealing printability, able to successfully fuse bag. If the formula is too sticky resin, heat sealing resin melt to stick on the heat sealing knife edge; formula used in slipping agent too much, then the heat sealing strength is not high, easy to open. Overall satisfaction three need is a good liquid packing bag.

　　（4） to acid and alkali resistance, impact resistance and other.

　　（5） and high temperature resistant film is necessary to have 121 degrees, 30 minutes sterilization.

　　（6） drink nozzle bag to have satisfactory strength, will not be out in force under the high speed automatic filling machine.

　　Function: use non-toxic material, has the characteristics of acid and alkali resistance, abrasion resistance, good transparency, good gloss, anti pollution and strong, do not fade, not easy to split, forming under the high temperature and radiation sterilization, sterile, non-toxic, no smell it. Alternative bottle use, cost savings, the commodity market competitiveness. Suction mouth, can be repeated use, sealing strong, easy to preserve, suitable for manual and automatic filling and sealing.