The rotational molding die is suitable for molding large and extra large parts. Because the rotary molding process only requires the strength of the frame to be sufficient to support the weight of materials, molds and the frame itself and the mold closing force to prevent material leakage, it is not necessary to use very bulky equipment and molds even for processing large and super large plastic parts.
Whether a plastic product is suitable for manufacturing with rotational molding, or whether rotational molding is the best choice for this product, must be comprehensively judged according to the shape, size, material, cost, quantity and other factors of the product. If there are several plastic molding methods that can be considered to make this plastic product, you can refer to the advantages and disadvantages of the rotational molding process and apply the exclusion method to select the best molding method.
Rotational molding products belong to hollow plastic products. Therefore, hollow products with double walls have become a common form. For example, the roll plastic incubator is a typical double-layer wall hollow product. Usually, the incubator will be filled and foamed between the double-layer walls to play the role of heat preservation and enhancement. So, when designing rotational plastic products, how much distance should be left between the two walls, especially between the parallel walls? This involves the problem of rotational molding process and raw materials.
For the rotational molding die that has been in production and use, whether the daily maintenance of the die is in place directly affects the quality of rotational molding products and the service life of the die. However, in the production of rotational molding, many operators ignore the protection of rotational molding molds due to the lack of relevant maintenance knowledge, resulting in the damage of product quality and molds and unnecessary losses to enterprises. Therefore, full attention should be paid to the daily maintenance of the mold, and the following matters should be done carefully:
Rotational molding is a branch of plastic processing industry. Therefore, rotational molding mold is also a kind of plastic mold. The basic requirements of plastic mold design and manufacturing are also applicable to rotational molding mold. At the same time, due to some characteristics of rotational molding process, there are still many differences in the design and manufacture of rotational molding die compared with other plastic processing methods. Whether the design and manufacture of a pair of rotational mold is successful depends not only on whether it meets the design and manufacture requirements of plastic mold, but also on whether it meets the following design and manufacture requirements of rotational mold.