Compression Molding

by | Dec 12, 2019

This is a SlideShare presentation covering the basic tenets of compression molding by Scott Miller, CEO Dragon Innovation.

It’s always a good thing to have a professional provide their knowledge and experience to hit home what is compression molding and when should I use it in manufacturing/product development.

Scott Miller is one of those experts.

Whether you’re trying to figure out which method makes sense for your product development or you need a quick refresher course, this is the perfect article for you.

Below you find the quick points made by Miller in his classroom presentation lecture covering Compression Molding as part of the Design for Manufacturing Course.

Compression molded parts are typically associated with the following:
  • Gaskets and Seals
  • Couples
  • Remote Button Pads
  • Hoses and Fittings
These are considered the advantages to compression molding:
  • Can use variable wall thickness
  • No flow lines or knitting (O-Rings)
  • Low cost
  • Suitable for high-volume manufacturing
  • Flexible materials/can use thermosets
  • Good surface finish
  • Low residual stress
These are considered the disadvantages to compression molding:
  • Slow cycle time requires multiple cavities (configuration issues and cost)
  • Cannot regrind excess material
  • Simpler parts
  • Requires workers to place resin and remove flash
  • Typically planar parts (limited mold depth)

Generally, the compression molding process starts with 1) a thermoset charge placed in the open mold cavity, 2) mold is closed with both heat and pressure, cross-linking, 3) then manual extraction and flash trimming.

Noteworthy design guidelines
  • Typically planar / flat parts
  • Can have non-uniform wall thickness
  • Flexible components

Common Materials used would be different types of alloy and resins, like silicone, natural rubber, neoprene, melamine formaldehyde, phenolic.

Watch the video in Scott Miller’s SlideShare, Slide 1 to learn more about specific use cases and nuances involved in the compression molding.
Continue to original Article >

Ioterra – Where you go for IoT Development

Find the right solutions and services for your needs from the most comprehensive marketplace for IoT projects.