Keywords: stretch wrap film, polyethylene
The quality of the stretch film is related to the purity and quality of polyethylene. It can be said that the quality of polyethylene raw materials determines the quality of the winding film. Compared with other types of winding film, the winding film has stronger toughness and mechanical properties, which makes its formulation unique.
General stretch film formula is pure polyethylene, polyethylene plus masterbatch, polyethylene plus renewable materials, polyethylene plus renewable materials, Masterbatch. Different formulas have different properties. The quality of the winding film is related to the purity of the polyethylene, the good winding film is completely transparent, the film is even, the hand feeling is good, there is no noise during the pulling process, the retraction stress is relatively uniform, showing regular increase and decrease, it’s consistent with the physical properties of polyethylene.
The other is made of recycled material and talcum powder (calcium carbonate). This wrap film is completely opaque, the cheapest, and from a distance looks like cardboard. But the wrap is soft, has no stretch, and breaks when pulled, leaving it not strong at all (mainly because the regenerated polyethylene and calcium carbonate molecules have not bonded, resulting in excessive intermolecular spacing). But the appearance of the wrap film can be confusing, so it’s worth testing its performance before purchasing it.
Generally, the quality of winding film depends on the purity of polyethylene. The higher the content of polyethylene, the better the quality. Pure polyethylene price is more expensive, belongs to the futures, the fluctuation is bigger, this also is the thin film price high reason.
Sinyar packing film uses pure imported polyethylene to guarantee the purity and quality of the stretch film from the first step, Dow, SAB, and ExxonMobil are among our raw material suppliers.
