When it comes to compression molding and transfer molding, the type of plastic typically used is rubber. This is clearly indicated by the references provided, which primarily discuss these molding processes in the context of rubber materials.
2 Methods Explained
1. Compression Molding
Compression molding involves placing well-shaped, unbranched stock, usually rubber, into each cavity of the mold.
The rubber is then subjected to heat and compression, causing it to conform to the shape of the mold cavity.
This method is perfect for a wide range of interior applications and trim covers in automotive manufacturing.
Using a hydraulic press to heat and compress the rubber makes the process fast, efficient, and reduces material waste and labor costs.
2. Transfer Molding
Unlike compression molding, transfer molding involves the transfer of the stock, typically rubber, through holes in the mold cavity.
The process starts with a piece of unvulcanized stock placed in a pot and covered by a piston.
The piston then pressurizes the rubber with additional heat, forcing it through a hole into the mold cavity.
This method is especially useful for creating complex shapes and requires precise control over the flow of the rubber material.
Both compression molding and transfer molding are effective methods for processing rubber, allowing for the creation of complex shapes and products with minimal waste and efficient use of labor.
These processes highlight the versatility and adaptability of rubber as a material in various manufacturing applications.
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