What is Rubber Moulding?

Rubber moulding is a process that allows us to use a raw form of rubber and mould it in such a way that we can create a product or component, to our desired specifications.

Rubber mouldings are valued in industry for their high tensile strength and ability to return to their original shape after being subjected to stress and pressure.

If you are in need of precision rubber mouldings in Johannesburg, be sure to contact Specialized Moulding today for more information and a quotation.

Types of Rubber Mouldings

There are three common types of rubber mouldings, namely injection moulding, compression moulding, and transfer moulding. Below is a general overview of the nature and characteristics of each, but for further expert advice and assistance with all your mouldings in Johannesburg, contact Specialized Moulding today.

Injection moulding is a technique where a heated liquid rubber is injected into a closed mould to create the desired formation of the mould. The rubber will be injected into the mould using high

pressure and will fill every cavity of the mould. Once the rubber has cooled, the mould can be removed, and used again for the next injection process. This process is highly efficient, being able to produce perfect moulds at a steady and fast rate, with minimal wastage. Injection moulding is well suited for complex geometric shapes, and will typically not require any further finishing processes.

Compression moulding is one of the original moulding methods. This process too makes use of the combination of pressure and heat to create the mould. The mould itself is made up of two halves, as opposed to one enclosed cavity. The raw rubber is inserted into one half of the mould where after the other half will be lowered to close the mould. The pressure created by sealing the mould forces the raw rubber to fill the full cavity and create the whole mould. Its simple design makes it one of the most cost-effective moulding methods.

Transfer moulding is similar to injection moulding in that the raw rubber is inserted into the cavity of the mould too with heat and pressure. Using a plunger, the raw rubber is transferred from an open-ended cavity called a pot, into the mould cavity itself. This approach is excellent for moulds that require precise geometry and produce a mould with high dimensional tolerance.

Specialized Mouldings provide expert mouldings in Johannesburg to suit your application. To find out more about the best type of moulding for you, contact Specialized Moulding today.