Publish Time: 2021-09-16 Origin: Site
Rotational Moulding is a thermoplastic hollow molding method in which the plastic material is first added to the mold, then the mold is continuously rotated and heated along two vertical axes, and the plastic material inside the mold is gradually and evenly coated and melted, and adhered to the entire surface of the mold cavity under the action of gravity and heat. The plastic material in the mold is gradually and evenly coated with gravity and heat, and then melted and adhered to the entire surface of the mold cavity, Rotational Moulding is molded into the desired shape, and then cooled and shaped into Rotational Moulding products. What is the content of Rotational Moulding? Let's take a look at it.
This is the content list:
l Rotational Moulding Principle
l Rotational Moulding mold rotation and rotation speed ratio
The basic process of Rotational Moulding is simple: a powdered or liquid polymer is placed in a Rotational Moulding mold and heated while the Rotational Moulding mold rotates around a vertical axis in both rotation and revolution, and then cools to form the mold. At the beginning of the heating phase of Rotational Moulding, if the material is in powder form, a porous layer is formed on the surface of the Rotational Moulding mold, which then gradually melts as it circulates to form a homogeneous layer of uniform thickness. If the Rotational Moulding is made of liquid material, it first flows and coats the surface of the Rotational Moulding mold and stops flowing completely when it reaches the gel point. the Rotational Moulding mold is then transferred to the cooling zone, where it is cooled by forced ventilation or water jets, and then placed in the working area, where The Rotational Moulding mold is opened and the finished part is removed, followed by the next cycle.
The Rotational Moulding speed and the Rotational Moulding speed ratio are very important factors to achieve a uniform wall thickness of the Rotational Moulding product. The appropriate Rotational Moulding rotation speed should ensure that a layer of material sticks to the mold wall every week of rotation. The rotation speed of the mold depends on the viscosity of the resin, the higher the viscosity, the slower the rotation speed. In general, the rotation speed of Rotational Moulding is a few revolutions per minute to a few tens of revolutions per minute, and the rotation speed of Rotational Moulding is lower than the rotation speed, and the ratio of rotation speed is not equal to 1 (because when the ratio of rotation speed to rotation speed is 1, some parts of the mold cavity may not be coated with the material).
Shanghai Jingyao Industrial Co., Ltd. is a modern high-tech enterprise, which is well established in the field of Rotational Moulding research and development, and produces excellent Rotational Moulding products if you are interested in Rotational Moulding, you can contact us, our website is www. shanghai- rotomolding.com.
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