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Thermoplastic resin compression molding

Compression molding is a manufacturing process used to process thermoplastic materials.
We use this technique to mold parts made from natural plant-based reinforcements such as flax, hemp, and cotton. The use of bio-based biomaterials allows us to produce technical parts in an eco-friendly and environmentally responsible manner.
The main advantage of this process is that it produces perfect geometry and appearance on both sides, which is essential for assembly.
We are able to produce plugs, protective covers, panels, and hatches.

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We manage the entire manufacturing process: draping tools, blank cutting, machining or trimming jigs, and assembly jigs.
This enables us to produce composite shutters and panels using bio-based natural fibers in any shape and size.
Compression molding of thermoplastic matrix composites relies on the transition between physical states: melting and solidification.
The raw material comes in the form of rigid sheets, which we must process by following these steps:

  • Heating thermoplastic sheets to make them malleable.
  • Cold compression molding.
  • The workpiece is cooled by contact with the tooling, which is cooled by the press platen. The drop in temperature causes the material to transition from a malleable state to a rigid state. Pressure must be maintained for several tens of seconds to prevent any shrinkage or deformation of the material.
  • Ejection and finishing of the part by trimming.