What are the production steps of rotomolding mould?

First install the machinery and equipment, that is, the rotomolding mould of the finished product you want to make, then heat and melt the raw materials (polypropylene, etc.), and the melted material enters the mold and is then cold-treated and shaped, so that the finished product is produced. The rotomolding mould is opened according to the parameters such as the size and radian strength of the product design. The plastic products in daily life are produced through the production line.

• What should be paid attention to in the production of rotomolding mould?

• What is rotomolding with rotomolding mould?

• What is the history of using rotomolding mould?

What should be paid attention to in the production of rotomolding mould?

Casting moulds tend to have additional costs associated with the manufacture of rotomolding moulds due to the need to develop the model prior to casting, while making steel or aluminium moulds, especially when used for less complex parts, is less expensive. However, some molds contain both aluminum and steel. This allows for variable thicknesses in the product walls. While the process is not as precise as injection molding, it does give designers more options. The added aluminum in the steel provides more heat capacity, allowing the melt flow to remain fluid for longer.

What is rotomolding with rotomolding mould?

Rotational molding (rotation molding) is a manufacturing technique. The technology has improved a lot over the past 20 years and more and more companies are using this versatile process every day. Plastic powder is added to the rotomolding mould, which is simultaneously rotated and heated to make hollow parts. During this process, the powder fuses into a bubble-free liquid layer that forms the inner surface of the mold. The object is then cooled and the hollow part is removed. This process is often used to make containers, but can also be used to make complex medical products, toys, recreational crafts, and more.

What is the history of using rotomolding mould?

Rotational molding involves a heated mold that is filled with a charge or injection weight of material. It is then rotated slowly (usually around two vertical axes) to disperse and stick the softened material to the walls of the mold, creating a hollow part. In order to create a uniform thickness over the entire part, the rotomolding mould is always rotated during the heating phase and then continued during the cooling phase to avoid sagging or deformation. The process was applied to plastics in the 1950s, but was rarely used in the early days because it was a slow process and limited to a small number of plastics. Improvements in process control and the development of plastic powders have led to increased usage over time.

In contrast, self-curing or UV-curing resins (as opposed to thermoplastics) are used in unheated rotomolding moulds, but with lower rotational speeds like rotomolding. This spin casting should not be confused with centrifugal casting.

SNOWBALL Hangzhou Snowball I/E Co.,Ltd., which has been around for more than several years, focuses on manufacturing rotomolding moulds. Here you will find the rotomolding mould you need.