6 Ways To Tell Whether Plastic Products Should Be Made By Rotational Molding
There is a saying in the rotational molding industry that rotational molding can be done wherever injection molding and blow molding can be done, but injection blow molding cannot necessarily be done if rotational molding can be done. Whether plastic products are suitable for rotational molding must be comprehensively judged based on the shape, size, material, cost, quantity and other factors of the product. Today, the editor will teach you how to tell whether plastic products should be made by rotational molding through the following 6 methods.
Method 1: First confirm whether the product is a hollow product. If it is not a hollow product or a foamed solid product, then it can basically be ruled out using rotational molding.
Method 2: Look at the product size. The injection molding process does not have such a large mold. If the plastic product to be made is very large and at least one of the dimensions of length, width and height exceeds the capacity of the current blow molding machine, or the width of the thermoformed sheet available in industry, then this kind of Products can only be produced by rotational molding.
Floor washing machine shell
Method 3: Look at efficiency and cost. If the demand for a plastic product is small, the production cost of blow molding will be very high. At this time, the low-cost advantage of rotational molding will be highlighted.
Method 4: Look at the material composition. The raw material of this plastic product is polypropylene, which is difficult to manufacture by thermoforming. If liquid polyvinyl chloride plastisol is used, it needs to be produced by rotational molding.
Method 5: Look at the product structure. If a plastic article contains a closed parallel double-walled structure, rotational molding is the molding method, since thermoforming requires more complex and expensive multifunctional molds. Rotational molding is also the best choice when the wall thickness of the product is required to be uniform or the outer corners need to be strong.
Insulation box
Method 6: Look at the shape. If a plastic product has a complex shape, such as a filter residue container, it is impossible to produce an integral product using blow molding or thermoforming. In this case, it can only be manufactured by rotational molding.