1. Structural features
Functional co -extruded film is a composite film with multi -layer and co -squeezing technology to combine multiple substrate substrates with different properties. It is formed at one time. Different functional needs of soft packaging. The common structures of functional co -squeezing membranes are: PE/TIE/PA/TIE/PE (PA), which is moderate and moderate in strength; PE/TIE/EVOH/TIE/PE, high blockability, moderate strength; PA/EVOH; PA/EVOH; PA/EVOH; PA/EVOH; /PA/TIE/EVA, high blockability and high strength.
2. Prominent advantage
121 ° C), low temperature resistance (-40 ° C), oil resistance; non-toxic and odorless, meet the sanitary standards of food and pharmaceutical packaging; good thermal sealing, good flexibility, good transparency, etc.
From the perspective of processing technology and cost, the advantages of functional co -squeezing films mainly include: not limited by product specifications, which can effectively meet the needs of different packaging occasions; the more levels, the more flexible the structure design, the lower the cost, such as it will be, as the cost, as the cost, as the cost, as the cost, as the cost, the lower the cost, as the cost, the lower the cost, as the cost, the lower the cost, as the cost, the lower the cost, as the cost, the lower the cost, as the cost, the lower the cost, as the cost, the lower the cost, as the cost, the lower the cost, as the cost, the lower the cost, as the cost, the lower the cost, as the cost, the lower the cost, as the cost, the lower the cost, as the cost, the lower the cost, as the cost, the lower the cost, as the cost, the lower the cost, as the cost, the lower the cost, as the cost, the lower the cost. The required resin ingredients are reduced to minimum thickness, and the thinnest thickness of the single layer can reach 2 to 3 μm, which can greatly reduce the expensive resin usage; only the use of a blowing process can effectively reduce production costs.
