What is the raw material of plastic paper for candy packaging? What kind of fiber fillers and sizing materials are used?

From the packaging point of view, the film includes (1) polyethylene (1) LDPE: low density polyethylene and high pressure polyethylene.

(2) LLDPE: linear low density polyethylene; (3) MDPE: medium density polyethylene and bimodal resin.

(4) HDPE: high density polyethylene, low pressure polyethylene 5) UHMWPE: ultra-high molecular weight polyethylene 2) PET 3) PVC 4) opp I think the answer upstairs is wrong. The weight of medicine cardboard is generally below 250G/M2, and 450G/M2 is already a very thick cardboard. How can it be?

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