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.

Stage 3:

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

Stage 4:

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

Example: Compression molded rubber button

Step 1: Prepare quantitative small dice of rubber.

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

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.

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

Stage 5: Trimming and packing