The difference between pp aluminum film and pet aluminum film
(1)Polypropylene is referred to as PP, commonly known as Baizhe glue. It is a non-toxic, odorless, milky white thin transparent polymer. Polyethylene terephthalate is abbreviated as PET or PETP, commonly known as polyester resin. Milky white highly crystalline polymer, collectively referred to as thermoplastic polyester together with PBT.
(2)The product characteristics of PP and PET are different: PP products can be heat-resistant to 120 degrees, and PET can only be heat-resistant to about 60 degrees. Both of them will deform and emit toxicity when they exceed their respective heat-resistant ranges.
(3) The hardness of PP and PET is different: PP is soft and tough, PET is hard and rigid, and for products of the same size and thickness, PET is much harder than PP. PP has good heat resistance, the melting point is 164-170 degrees, and the products can be sterilized at temperatures above 100 degrees; the embrittlement temperature is -35 degrees.
PET has creep resistance, fatigue resistance, friction resistance, good dimensional stability, low abrasion and the best toughness among thermoplastics. The long-term use temperature of the product can reach 120 degrees, the short-term use can reach 150 degrees, and the embrittlement temperature is -70 degrees.