re:The characteristics of the bag material

The characteristics of the bag material
 
Nylon: To seal the packaging, because the nylon met the air will absorb moisture, the main features of nylon is resistant to penetration is relatively strong, suitable for bone products. But nylon bags easy to wrinkle, easy to shrink. Nylon thickness is generally 15um.
OPP: partial brittle, breathable and moisture permeability is better, stretch and barrier is relatively poor, feel more brittle OPP thickness is generally 30um.
PE: Tensile performance is better, pull the power is better. There are two kinds of milky white PE (extinction) and transparent PE. Feel soft.
PET: very good, good printing effect, suitable for doing bags. Feel particularly brittle, get the sound of rustling in the hands of the special ring. PET thickness is generally 12um.
ive glue on the composite film after curing, curing effect is mainly to glue can firmly stick, curing generally cured at 50 ℃ for 24 hours. In fact, is a good composite film placed in 50 ℃ environment for 24 hours. If the time and temperature does not meet the requirements of the membrane will appear non-tight phenomenon.