What kinds of plastics are suitable for stretch and blow molding?How to choose raw materials according to production method?
Polypropylene is the earliest plastic used for stretch blow molding, polyethylene terephthalate is the most used and the fastest growing plastic for stretch blow molding.With the development of modern plastic blow molding technology, available materials for stretch blow molding include PET, PP, PVC, PC, POM, PAN, etc.
Different production methods have different materials.
One- step extrusion, stretch, blow molding, mainly PVC, PET, PAN and other plastics.
Two-step extrusion, stretch, blow molding, mainly PP, PVC and other plastics.
One - step injection molding, mainly PET, PC, PP, PVC, PA, PS and other plastics.
Two - step injection molding, mainly PET, PP, PVC and other plastics.