Differences in blow molding and injection molding processes, raw materials, and applications
Published time:
2021-11-12
Blow molding: Blow molding uses gas pressure to enclose a heated preform in a mold to form a hollow product, or to blow a tube blank into a moldless tube film.
A. Different Processes
Blow Molding: Blow molding uses gas pressure to enclose a heated preform in a mold to create a hollow product, or to blow a tube into a moldless tube film.
Injection Molding: Injection molding melts plastic material, shapes it, and then injects it into a mold cavity.
Second, different raw materials
Blow Molding: The raw materials for blow molding are typically polyethylene (PE), polyvinyl chloride (PVC), polypropylene (PP), polystyrene (PS), thermoplastic polyester (PBT, PET), polycarbonate (PC), polyamide (PA), cellulose acetate (CA), etc.
Injection Molding: The raw materials for injection molding are typically thermoplastic or thermosetting materials.
Third, different applications
Blow Molding: Widely used in the bottle, can, baby products, and sporting goods industries.
Injection Molding: Injection molding is widely used in the mobile phone, laptop computer, various plastic casings, communications, micro-motors, computers, electrical appliances, electronics, toys, clocks and watches, lighting, and machinery industries.
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