Rotational molding is a versatile process for manufacturing various hollow plastic parts. This molding process utilizes heating and rotation along two axes to produce individual hollow parts. Melted plastic is injected into a rotating mold, and centrifugal force causes the melted plastic to adhere to the inner wall of the mold. By adding plastic (such as LLDPE) to the closed mold, the mold is heated while rotating, and the plastic melts and evenly adheres to the surface of the mold cavity. After the mold cools, a plastic hollow product with the shape of the mold cavity can be obtained, such as boxes, barrels, basins, cans, etc. Generally, it consists of basic steps such as feeding, sealing the mold, heating, cooling, demolding, and mold cleaning.
But All holes need to be completed by subsequent secondary processing.
