The Difference Between The Rolling Process And The Blowing Process

The rolling process, also known as rotary molding or rotary injection molding, is to place a section of hot soft plastic material in the center of the mold and distribute it evenly throughout the surface of the mold by rotating the mold to eventually form the desired product. It is often used to make large, complex shapes, such as oil storage tanks, trash cans, etc.

Blow molding process, is the use of high pressure air to heat polyethylene (PE) and other resins into the mold, in a certain period of time, natural cooling to form the required product. Often used to make small and medium-sized hollow items, such as plastic bottles, toys, etc.

Therefore, the main difference between the rolling process and the blowing process is that the scope of application is different. Rolling process is suitable for large and complex shape product manufacturing; The blow molding process is suitable for small and medium-sized hollow goods production.