Китайский поставщик литой алюминиевой формы для манекена

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Customized mould for rotomolding

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All mold have to design according to your sample or drawing. we have engieer to service for you.

Rotational molding is an atmospheric pressure process that produces nearly stress-free parts. The fact that there are no stresses on the melt as it is shaped is a major advantage that rotational molding has over all other manufacturing methods for plastics parts. Also, as there are no forces on the plastic melt during forming, rotational molds can have thin walls and are relatively inexpensive to fabricate. For simple parts, mold delivery times can be a few days or weeks. Modern, multi-armed machines allow multiple molds of different sizes and shapes to be run at the same time. With proper mold design, complex parts, such as double-walled containers, that are difficult or impossible to mold by any other method, can be rotationally molded. With correct process control, the wall thickness of rotationally molded parts is quite uniform, unlike structural blow molding or twin-sheet thermoforming. And unlike these competitive processes, rotational molding has no pinch-off seams or weld lines that must be post-mold trimmed or otherwise finished.

The main attractions of rotational molding are:

• A hollow part can be made in one piece with no weld lines or joints


• The molded part is essentially stress-free


• The molds are relatively inexpensive


• The lead time for the manufacturer of a mold is relatively short


• Wall thickness can be quite uniform (compared with other free surface molding methods such as blow molding)


• Wall thickness distribution can be altered without modifying the mold


• Short production runs can be economically viable


• There is no material waste in that the full charge of material is normally consumed making the part


• It is possible to make multi-layer moldings, including foamed parts


• Different types of products can be molded together on the one machine


• Inserts are relatively easy to mold in


• High quality graphics can be molded in