Publish Time: 2022-03-30 Origin: Site
OEM roto moulding is a thermoplastic hollow molding method, in our daily life, there are many times will use OEM roto moulding, then OEM roto moulding what is a brief introduction? Let's take a look at it together.
l Brief introduction of OEM roto moulding
l The principle of OEM roto moulding
OEM roto moulding is a molding method in plastic molding processing. OEM roto moulding is mainly used for manufacturing and processing medium, large, or super large hollow products of hollow seamless products, such as handling boxes, tipping hulls, sailboat hulls, clothing models, industrial storage tanks and storage tanks, etc. The largest container processed can be up to 100,000 liters. This is difficult to achieve by injection molding and blow molding, and OEM roto moulding is an economic and effective molding method because of its uniform wall thickness, stable dimensions, no molding seams, and no edge waste. Traditionally, OEM roto moulding is mainly used on thermoplastic materials, but rotational molding of thermoset materials such as cross-linkable polyethylene is also developing rapidly. Since OEM roto moulding does not require high injection pressures, high shear rates, or precise compound metering, the molds and machines are relatively inexpensive. Therefore, OEM roto moulding molds and machines are relatively inexpensive and have a long service life.
First, a certain amount of plastic powder is placed in the lower half of the molding OEM roto moulding mold (the molding OEM roto moulding mold is generally made of steel or cast aluminum with thin walls), the upper half of the mold is closed, the whole OEM roto moulding mold is moved to the heating furnace for heating, and the OEM roto moulding mold is made to The tumbling powder comes into contact with the inner surface of the hot OEM roto moulding mold and gradually melts into a uniform melt. With the continuous rotation of the OEM roto moulding mold, the material continuously absorbs heat and melts, and the melted material melt is uniformly coated on the whole inner surface of the mold. Then the OEM roto moulding mold is moved from the heating oven to the cooling chamber for cooling and curing. At this time, the OEM roto moulding mold is still in a biaxial rotating state until the material is completely cured. Finally, the OEM roto moulding mold is opened and the product is removed.
The basic principle of OEM roto moulding can be understood as the theory of liquid pull-off, OEM roto moulding mold cavity wall is equivalent to the surface of the object immersed in liquid, with the lifting speed and liquid viscosity of different, the formation of the corresponding liquid cover layer. The liquid in OEM roto moulding here means the molten resin powder.
Shanghai Jingyao Industrial Co., Ltd. is a modern high-tech enterprise, for OEM roto moulding technology development deep, research and development of products by the consumer's favorite, if you are interested in OEM roto moulding technology products, you can contact us, our website is www. shanghai-rotomolding. com.