Nylon characteristics and application of the vacuum bag

Nylon vacuum bag materials PA/PE five layers co-extrusion nylon membrane, is to all kinds of single material ( PA、PE） Through the multi-layer co-extrusion equipments manufacturing and become a kind of excellent high barrier film. Advantages: improve the quality of thin film, give special performance five layers co-extrusion nylon vacuum bag with gas barrier property of nylon film, PE film of water vapor barrier property, good heat sealing, high mechanical properties, durability, good low temperature resistance. Improve the film processing after the performance of the nylon vacuum bag for heat sealing bag making and adaptability of automatic packaging. Environmental protection, non-toxic traditional dry composite production of high barrier film need adhesive and solvent, for people and atmospheric pollution, and high barrier film produced a total of extrusion way there are no this kind of situation. Application: nylon vacuum bag is a very tough vacuum bag, good transparency, and has good gloss, high tensile strength, tensile strength, but also has good heat resistance, cold resistance, oil resistance and organic solvent resistance, abrasion resistance, durable sex good, and is soft, good resistance of oxygen resistance, but for poor water vapor barrier property, moisture absorption and moisture permeability is bigger, poor heat sealing property, nylon vacuum bag is suitable for packing rigid objects, such as sex fat food, meat, Fried food, vacuum packing food, cooking food, etc. Product composition: the basic structure of the five layers co-extrusion nylon membrane for PE/glue layer/PA/PE/adhesive layer, because of the nylon ( PA） To join, has greatly increased the oxygen, carbon dioxide, water vapor and the blocking of odour, which has played a role in keeping fresh, with good quality products. PA film is divided into two printing and compound, printing, composite can be used in the printing process, composite level is only recommended for composite process without printing. 12 microns thickness is general, and 15 microns, 25 microns several kinds of specifications. For the middle layer composite, and for water cooking purposes, be sure to use double corona films. PA membrane key quality requirements: a. High flatness requirement should choose arch effect of the small synchronous stretch film. b。 The surface tension of the film & ge; 50 mn/m, to ensure that the ink attachment fastness. Value is not the bigger the better. c。 Choose good film relative humidity adaptability, and guarantee the accuracy. d。 Choose smaller shrinkage film varieties ( Wet and heat shrinkage) 。 And polyester vacuum bag difference: polyester vacuum bag is a polyethylene terephthalate as raw material, adopting legal system into thick slices, then through two-way stretch vacuum bag material. It is a colorless, transparent, glossy vacuum bag, good mechanical properties, high rigidity, hardness and toughness, durability, friction resistance, high temperature and low temperature resistance, chemical resistance, oil resistance, good air tightness and sweet, is a common one of the permeability resistance of composite vacuum bag base material. But polyester vacuum bag price is higher, the general thickness of 12 microns, the outer layer of the commonly used for cooking and packaging materials, printing is better.