Rubber molding is an industrial process that uses heat and pressure to shape rubber into products. It's a versatile manufacturing method that can produce a wide range of products, from seals to automotive parts.
During the process, rubber is heated until it's pliable, then placed in a mold cavity.
The mold is closed and pressure and heat are applied to the rubber, which starts to cure and take the shape of the mold. After certain time, the mold is opened and the rubber parts come out.
Rubber molding is a cost-effective method that offers high precision and accuracy. It's used in many industries, including automotive.
There are 3 types of rubber molding:
1. Compression molding
A simple, original molding process that uses a heated mold tool and a clamping press
2. Transfer molding
Involves placing preformed rubber into a mold cavity and forcing the material into shape
3. Injection molding
Involves heating raw rubber until it's liquid, then injecting it into a mold under high pressure
The key difference between rubber molding and plastic molding is the material used: rubber molding shapes uncured rubber into a desired form, while plastic molding melts and solidifies plastic polymers to create a part, with the main distinction being that rubber offers superior elasticity and flexibility compared to most plastics, making it ideal for applications requiring seals and vibration dampening, while plastic is more versatile for a wider range of products due to its diverse material properties and ability to create complex shapes.
Key points about rubber molding:
Material: Uses uncured rubber (elastomer).
Properties: Excellent elasticity, resilience, and ability to absorb shock.
Applications: Seals, gaskets, O-rings, bumpers, vibration dampeners.