How are rubber products molded?

The clearest detailed explanation of the rubber molding process. Including text and pictures. Step by step.

Stage 1:

Heat and warm up the mold into certain temperature.

Stage 2:

Open the mold and put small piece of conditioned rubber into the cavity.

rubber molding process

Stage 3:

The upper and lower mold plate are combined, and the rubber pieces are vulcanized and formed under high temperature and pressure.

rubber molding process

Stage 4:

Demoulding, the molded rubber products are sent to the trimming workshop.

rubber molding process

Example: Compression molded rubber button

Step 1: Prepare quantitative small dice of rubber.

rubber molding process

Step 2: Put the small dice of rubber into the cavities one by one.

rubber molding process

Step 3: After heating the molds to 180°, combine the upper and lower molds plates. The rubber pieces are formed against the inner wall of the mold under high temperature and pressure, and completed the molding process after 10 minutes.

rubber molding process

Stage 4: Inject air into the cavities to demold the products.

rubber molding process

Stage 5: Trimming and packing

rubber molding process