DEVELOPMENT OF ROTOMOULDING
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.
RAW MATERIALS OF ROTOMOULDING
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.