What is the function of rotational molding

  The common processing and molding processes for plastics and composite materials include extrusion, blow molding, injection molding, etc. In addition, rotational molding is also a processing method for plastic products. The rotational molding industry has developed rapidly abroad, but in China, due to various factors such as slower processing cycles and limitations on the materials used, the development speed of the rotational molding industry is far lower than other plastic molding and processing industries. Fangda Roll Molding is a professional manufacturer of fully automatic roll molding machines and provides automotive urea tanks. Today, we will explain the role of roll molding.

  The rotational molding process emerged in the 1930s, and after 60 years of development, its equipment and technology have matured. Toys nowadays are manufactured using rotational molding, ranging from small children's toys to common automotive plastic parts to large engineering plastic products, especially oversized and non-standard hollow plastic products. Due to the inherent limitations of its plastic processing technology, it can only be completed through rotational molding technology. In general, rotational molding is mainly applied to thermoplastic materials, and the rotational molding of thermosetting materials such as cross-linked polyethylene has also developed rapidly. Because rotational molding does not require high injection pressure, high shear rate, or precise polymer gauges, molds and machines are relatively inexpensive and have a long service life.
 
  At present, the rotational molding process has become an important branch of plastic processing technology, and its level of attention and development cannot be underestimated.