Way of five kinds of composite flexible packaging industry, two pictures

What process characteristics of flexible packaging composite way each? What are the strengths and weaknesses of the various different composite way? Why the proportion of the use of dry type composite in the flexible packaging industry than other composite way? Why now widely admired solvent-free composite way? Read the following two forms, and perhaps you will understand. 1. Technological characteristics of various composite forming film solids more complex legal adhesives solvent characteristics of composite object advantages disadvantages wet composite emulsion poly vinyl acetate, polyvinyl alcohol, vinyl acetate butyl phthalate water is cheap, oil is not water resistant and heat resistant foil and paper, composite paper acrylate emulsion, acrylic copolymer emulsifier water flexible, water resistant acrylic ester stink PVC, polyester, polystyrene and paper EVA emulsion EVA emulsifier water flexible, smell less not heat-resisting PVC, resin, polystyrene and paper dry type composite poly vinyl acetate acetic acid ethylene vinyl acetate solution, alcohol oil is not water resistant and heat resistant polyethylene foil, cellophane, cellulose acetate, polyvinyl chloride solution - Acetic acid ethylene vinyl acetate copolymer, methyl ethyl ketone, oil resistance, resistance to water heating foil, PVC, well protected against dampness cellophane polyester polyurethane solution, polyisocyanate, methylene chloride, vinyl acetate resistance to boiling water of the high cost of foil, polyethylene, polypropylene, polyester hot melt composite paraffin wax, wax & ndash; — Health is not heat-resisting, composite fastness to foil, paper, general film EVAEVA, wax, resin & ndash; — Health is not hot foil, paper, film extrusion coating (commonly Polyethylene, polypropylene) — — — — — — Health, cheap is limited to film foil, polyethylene, polypropylene and ammonia water, water-soluble primer alcohol for health, not cheap water resistant stretch polypropylene vinyl acetate phthalate, toluene solvent primer gm, low price is not water resistant foil, general membrane ammonia ester compound high fastness, high price of heat-resistant foil, generally low film coextrusion composite forming, at the same time of limited polyethylene, polypropylene, nylon, polyester, EVA, EVA saponification, polyvinylidene chloride 2. Mainly the production of composite composite membrane characteristics of composite technology coating weight/( g/㎡） Heat oil resistant water transparency crimpness solvent-free composite zero residual solvents. 8 ~ 2. 0 best best best best best dry compound 1. 8 ~ 5. 0 poor excellent quality good hot melt composite 0 ~ 4 poor poor poor yo-yo composite extrusion 0. 01 ~ 0. 1 LiangLiang good poor good wet compound 2 ~ 6 LiangLiang poor poor