How long does it take to perform over-molding?

Question: How long does it take to perform the over-molding? What are the typical curing durations inside the mold?

Answer: Curing time of over-molding process depends on two major factors:

  1. Although an increase in temperature will reduce the cycle time, it can deflect the secondary over-molded piece such as plastics. Temperature should be adjusted according to both materials’ processing specifications.
  2. Larger part dimensions require longer cycle time. An increase in wall thickness of the part geometry will consume more curing time.

The majority of molding time in each cycle is spent during a curing process. Once the part is cured, it can be immediately ejected. Similarly to silicone curing time, thermoplastics cooling time is also the longest phase in the molding cycle.

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About Veasna

After interning for more than a year at Albright Technologies, Veasna gained experience in many aspects of silicone manufacturing including understanding of materials, mold making, and silicone molding. Veasna received a Bachelors of Science in Plastics Engineering from University of Massachusetts in Lowell in 2010, shortly after he accepted a full time position at Albright Technologies. In the spring of 2011, he received a Graduate Certificate in Plastics Design from UML. Veasna is mainly responsible for managing customer’s projects which begin from signed purchase orders to accepted and on-time part deliveries, he is also actively involved in research work on silicone bonding.