Rubber injection molding

In the latter part of the 20th century, experts introduced techniques for rubber injection molding that were similar to plastic molding. In almost all rubber injection molding procedures, rubber is heated at extremely high temperatures and injected into molds. Given below is a detailed description of how rubber is molded.

Preparation of materials

Synthetic or natural rubber is mixed with appropriate additives to satisfy the specifications mentioned for future design use. The synthetic rubber is called elastomer and the rubber obtained after mixing is called thermoset elastomer. This thermoset elastomer is now fed in the form of strips into the screws and barrels where the rubber is heated at temperatures that are slightly lower than that of the considered rubber mold.

Injection of the rubber

Now the compounded material is injected via the channels of the tool to finally reach the cavities of the hot mold that is closed. In this stage, the compounded material is subjected to a combination of pressure, temperature, and time that brings about the crosslinking of the chemical bonds. This crosslinking process is technically called vulcanization. Process parameters are integrated and programmed into the molding press to exert control over the volume, temperature, and speed at which the compounded material is injected into the cavities of the mold.

Removal of the final product

The engineer in charge of the molding process programs the required specifications into the press to offer adequate time for the completion of cross-linking. The press is then opened and the finished products are removed and permitted to cool to room temperature before subjecting them to a process called Deflashing. However, Deflashing is done only when it is completely necessary. The finished products are then inspected and prepared for dispatching.

Contact Alfa Rubber to receive professional assistance for rubber injection molding. The company ensures that the procedures that they follow are time-saving and leave behind less waste.         

For More Details:

ALFA RUBBER & SPRINGS PRIVATE LIMITED

A-13/A, SIPCOT INDUSTRIAL COMPLEX,

GUMMIDIPOONDI. TAMILNADU 601 201, INDIA

TELEPHONE – +91-44-27922057

EMAIL – info@alfarubber.com

WEBSITE: https://alfarubber.com/

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