Ziplock bag materials
PE: the material is relatively soft, but other high transparency, contrast cover, pull a good, easily burst opening;
PP material: material is hard, but high contrast transparency, clearer, tension is not very good, explosive;
PO: the material more brittle, transparency is not high enough, cast than the PE material, a little red, tension is not very good;
OPP: crisp, transparent, pull enough, but the most explosive, and printing the most easily discolored.
PVC material: material has both soft and hard, according to the owner required to order materials, transparency or according to need. Super transparent material, ordinary and scrub materials. Pull a good, not easily tearing, not easily open seam, because between the two layers of material is made of machine with beer.