Roto-molding Manufacturers Briefly Talk About The Difference Between Roto-molding And Blow Molding
Roto-molding and blow-molding are two common plastic processing technologies, each with its own characteristics and application scenarios. Here are their differences:
1. Process principle
Roto-molding: Add plastic powder into the mold, heat and rotate the powder to make it melt evenly and adhere to the inner wall of the mold, and demold it after cooling to obtain the finished product.
Blow-molding: Place the molten plastic preform in the mold, expand it to fit the inner wall of the mold through compressed air, and demold it after cooling to obtain the finished product.
2. Applicable materials
Roto-molding: Commonly used powder materials such as polyethylene (PE), polypropylene (PP).
Blow-molding: Commonly used granular materials such as polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET).
3. Product features
Roto-molding: Suitable for the production of hollow, large, and complex-shaped products, such as water tanks, toys, containers, etc., with uniform wall thickness and high strength.
Blow-molding: Suitable for the production of hollow products such as bottles, cans, and barrels, with thin walls, suitable for mass production.
4. Production efficiency and cost
Rotational molding: long production cycle, suitable for small batch and customized production, low mold cost.
Blow molding: high production efficiency, suitable for large batch production, high mold cost.
5. Application areas
Rotational molding: used in large containers, amusement equipment, medical equipment, etc.
Blow molding: widely used in the packaging industry, such as beverage bottles, cosmetic bottles, etc.
Summary
Rotational molding: suitable for large, complex, small batch products, uniform wall thickness, high strength.
Blow molding: suitable for large batch, thin-walled products, high production efficiency.
The selection process should be determined according to product requirements, material characteristics and production scale.