Problems with rotational molding products
Analysis of defects of rotational molding Product defect:
The rotational molding process is also known as rotational molding or rotational molding. This forming method involves continuously rotating the mold along two vertical axes and heating it, and the mold in the mold cavity is subjected to heat under the action of gravity, gradually melting and adhering to the surface of the mold cavity. Plastic products are made after cooling and molding.
The rotational molding process is usually used to produce hollow seamless plastic products with complex shapes. It is widely used in chemical, mechanical, electronic, light industry, and military industries, such as roll forming fuel tanks, fuel storage tanks, and large vehicles, such as motorcycles and automobiles. Medium sized hollow containers, automotive parts, and corrosion-resistant containers are only waiting. In recent years, they have also gradually been used to produce various civilian or military product packaging boxes, transportation boxes, and other products.
At present, most orders for rotational molding products from abroad directly indicate the use of special linear low density polyethylene (LLDPE) rotational molding materials for rotational molding. Most of the products are cleaning machine shells of different specifications that require high rotational molding technology, mower shells, cargo transport boxes, storage boxes, various electromechanical packaging boxes, double-layer insulation boxes with foam layers inside, auto parts, etc. China's rotational molding technology and mold processing technology have developed rapidly, but compared to Europe and America, there is still a gap in the design of rotational molding products.
The rotational molding process plays a very important role in product quality. After the completion of product design and mold design and manufacturing, the mold structure that is easy to cause Product defect is usually not easy to change. It is more important to try to solve the defects of the rotational molding product during the molding process. At present, there is little information about the design and technology of rotational molding products in China. Most product designers or engineering manufacturers rely on practical experience for design and production, which often brings unnecessary trouble to design and production. The research and analysis on the causes and solutions of rotational Product defect defects is of great significance for improving the technical design level of rotational products and rotational molds.