Rotomoulding is the technique for producing hollow plastic products.The first step is to put plastic powder into molders,then heat the molder to make the powder revolve around two vertical axes.The resin within the molder starts to pave the surface evenly due to the weight and heat followed by meltingon the inner surfface of molder.the second step is to cool down the molders and remove from the molder to get the products. Compared with what the plastic forming always take such as extrusion,injection,and blowing,the rotomoulding enjoys the advantage of small investment,excellent application for medium-and-super sized plastic products in complicated structures,and no stress,etc.
LLDPE(Low Linear Density Polyethylene)is the ideal raw materials for rotomoulding.LLDPE is the copolymer of polythene,butylenes and so on with the linear molecule and the density of 0.93g/cm3.The advantage of LLDPE is it is better in liquidity,thermal stabilization and ESCR<impact, and hardness.
Rotational molding of raw materials used in general are imported, we use Le Tian, Mobil. Besides the common color your own color, the best use special pigment suppliers of raw materials, such as the Malaysia ICO and Nanjing Julong, special material blending resistant to ultraviolet, anti oxidation, and flame retardant.