The suction nozzle bag custom - Food packaging manufacturer suction nozzle bag manufacturers

A, option 1 of composite material, outer outer substrates, on the market at present commonly used upright substrate in addition to the ordinary OPP bag cutting, and PET, PA high strength, high barrier property of the material, can undertake choosing according to situation. If used for solid packaging of dried fruit products, can use ordinary materials such as BOPP, extinction BOPP. If the packaging of liquid products, generally choose the PET or PA material. 2, an intermediary intermediary generally choose high strength, high barrier property of materials, such as PET, PA, VMPET, aluminum foil, etc. And RFID, which requires the middle tier to meet the requirements of composite, the surface tension of the material must be adhesive and good affinity. 3, the inner lining or layer heat sealing, generally choose PE and CPE, CPP has strong heat sealing performance of the material at low temperature. Ask its to meet the requirements of compound on the surface of the composite surface tension, thermal cover surface tension must be less than 34 mn/m, and have good ability of antipollution and antistatic ability and heat sealing. 2, 1 bag making process requirements, heat sealing temperature that needs to be considered in setting heat sealing temperature factors, one is one of the characteristics of heat sealing materials; 2 it is to film thickness; 3 is the number of hot heat sealing pressure and the size of the heat sealing area. In general, the same parts of the hot pressure is large, the number of heat sealing temperature can be appropriately set lower. 2, heat sealing pressure when heat sealing must be properly could promote the thermal cover adhesive materials. But if the pressure is too big, can make molten material extrusion, not only affect the flatness fault analysis and ruled out of the bag, can also affect the effect of heat sealing bag, reduce the heat sealing strength. 3, heat sealing time heat sealing time in addition to the associated with heat sealing temperature and heat sealing pressure, and the performance of heat sealing materials, heating mode and other related factors. Specific operation should be according to the different equipment and materials, adjusted during the actual trial. 4, heating mode, heat sealing knife when making a bag heat-sealing heating mode can be divided into two categories: unilateral heating and heating on both sides. Obviously, both sides heating mode than unilateral heating method is efficient and practical. Vertical bag problems in practical production is more, but there are mainly two problems: one is holding commodity leakage or leakage; The second is in the process of bag making bag type asymmetric uneven and bottom sealing. Therefore, how to do a good job in the choice of materials, and adopt the best operation way, rises to the overall quality of vertical bag plays a decisive role.