The Process of Moulding Rubber Parts

Using rubber to produce parts is a cost effective method of manufacturing parts with a high degree of precision. The production process involves several steps that require a combination of physical and chemical processes to create a finished part. Injection moulding, compression moulding, and transfer moulding are some of the main methods for producing moulded parts. Each type of method has its advantages and disadvantages. Find out more about Rubber Moulding by visiting

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Injection moulding is used for products that have tight tolerances and complex geometries. For this reason, it is usually equipped with an intricate runner system and heating sources. It is also known for the high process control costs involved. In contrast, compression moulding is less costly and has relatively inexpensive moulds. It is most commonly used between heated platens in a press, and is particularly efficient for producing low-volume prototype and production parts.

Another method is called transfer moulding. It is a more complex process than the other methods mentioned above, but it has the advantage of being highly efficient, and being suitable for producing precision moulded rubber products. This process is typically used to produce rubber bonded to metal surfaces. It involves loading components into a heated mould, a process that can be repeated several times to produce parts of different sizes.

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Transfer moulding is a similar process to compression moulding. Both processes involve the use of sprues and a transfer system on top of the mould to facilitate the insertion of raw rubber into the mould cavities. The sprue is a small section of the mould that is forced into the cavity by a heated plunger. It is then held in place until the desired cure time has been reached. The preform material is then forced through the sprues, and the material spills out of overflow grooves into the cavity below.

The vulcanization process changes the thermoplastic properties of the rubber and creates a strong, durable part. The parts produced through this process have a much higher strength than cured rubber. It is also a good way to produce high volume parts. It is ideal for a wide range of applications, including gaskets, seals, and other types of parts.

Compression moulding is the original production method for rubber. It involves the use of a heated plunger that forces the rubber compound into the cavity of the mould. The resulting vulcanization process gives the part a hardened appearance. However, this process can be expensive and does not provide as large a part volume as other methods.

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