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Testing Method and Film Material Five Common Film Materials 1.PA (Nylon) PA has good barrier performance, transparency, puncture resistance and other mechanical properties; easy to absorb moisture and deform, and the barrier performance of PA after moisture absorption is also greatly reduced. Application It is widely used in food packaging, mostly for the barrier layer of three-layer or multi-layer composite materials; Commonly used in composite material inner layer (middle layer of ham packaging) 2.EVOH (Ethylene/Vinyl Alcohol Copolymer) EVOH has high gas barrier property, fragrance retention, moisture absorption and gas barrier effect after moisture is attached, oil resistance, good thermal stability; high mechanical strength, elasticity, surface hardness, wear resistance High gloss, …

Common Film Material and Their 9 Most Important Testing Items 続きを読む "