Rubber Injection Molding is the process in which precision silicone rubber parts are created by injecting the liquid silicone rubber into a heated mold. The liquid silicone takes the shape of the mold, cooled and then removed from the mold.
Rubber Injection Molding can be broken down into two general steps:
Step 1: The liquid silicone rubber is mixed with a coloring paste (to achieve the desired final color of the injected molded part) along with a catalyst which starts the curing process.
Step 2: The mixed silicone rubber material is then pushed into a heated cavity (or mold) where the vulcanization of the mixture takes place. The liquid silicone rubber is injected at high pressures into the mold. Depending on the duromter (hardness of the material) of the silicone the pressures can range from 500 to 5,000 PSI.
The general thought is that Silicone Rubber Injection Molding is used to create silicone rubber parts that require a greater precision than parts created using Silicone Rubber Compression Molding however with the proper machinery and skill you can produce precision silicone rubber parts using compression molding as well.
Silicone Dynamics primarily creates silicone rubber keypads using a Silicone Rubber Compression Molding. When you send your drawing and requirements to us for a free quote we will accurately determine which method would be the most cost effective for you while meeting your specifications and maintaining high quality parts.
Please contact us today for a free sample silicone rubber keypad for your evaluation of our products and quality.