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Process principle

Ningbo Wanma Plastics Co.,Ltd | Updated: Mar 14, 2016
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Rotational molding process is very simple is powdered or liquid polymers in die heated molds rotate around a vertical axis rotation and revolution, then cool. During the heating phase at first, if you are using powdered materials, porous layer formed on the surface in the mold, then cycle began to melt, eventually forming the homogeneous layer of uniform thickness; if you are using liquid materials, and coated on the surface first flows, when the gel point is reached and it is entirely stopped flowing. Mold and then transferred to the cooling area, by forced ventilation or cooling water before being placed in the work zone, where stencil is open, finished workpiece is taken away, then proceed to the next round of the cycle.


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