Injection Molding Silicone

Available from Da/Pro Rubber, Inc.
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Da/Pro Rubber offers Liquid Silicone Injection Molding ( LIM ) services in addition to our compression / transfer molding services. Da/Pro is known for high precision, close tolerance molding services and manufactures silicone injection molding parts to these same demanding standards.

Liquid silicone injection molding ( LIM ) is similar to transfer molding but the silicone rubber material is supplied through an injection nozzle and is injected into the mold cavity. Under heat and pressure, the silicone rubber cures. The part is then ejected from the cavity and the LIM molding cycle restarts.

Liquid silicone has a low viscosity. If tooling is not precise, flash occurs and the parts do not come out of the mold clean. Da/Pro Rubber builds LIM tooling that molds precision parts with virtually no flash; decreasing the need for secondary operations.

Injection molding silicone requires creative demolding procedures. For low runs, demolding parts can be accomplished manually. With high run production, manual demolding LIM parts would not be cost effective. Da/Pro's LIM department utilizes automation to demold high run jobs. Injection molding automation includes robotic, brush, mechanical, air and custom techniques. The automation increases the cost effectiveness of injection molding and may decrease the run time of the job.

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