Popular outdoors equipment manufacturer crafted to enhance every adventure - Raystreak-We have two production sites, one in China and one in Thailand

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What is rotational molding?

May 17, 2024

Rotomolding is a 4 step process which involves, mold loading, heating, cooling and mold unloading. The process occurs at atmospheric pressure using gravitational forces.

A mold charged with plastic polymer powder is loaded onto an arm of the machine which rotates in a biaxial rotation on two perpendicular axis. The biaxial rotation creates a centrifugal force which pushes the powder to inside surface of the mold cavity. As the mold reaches peak temperature the plastic powder begins to melt and uniformly coat the inside surface of the mold cavity creating a uniform layer of plastic. Once the mold has completed the heat cycle, the cooling cycle begins where the plastic cures and solidifies. Once the cooling cycle is complete, the molded part is unloaded from the mold cavity.


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