The vacuum casting is a prototype process for the production of plastic parts. To prepare the silicone forms of reproduction, the original models with liquid polyurethane casting resin poured. By this method, a flexible silicone form of reproduction is gained.
In a mixer, the final components are thoroughly mixed and then given as a reaction mass in the vacuum chamber in the silicone forms of reproduction. The curing takes place in the form itself and the vacuum is used to prevent the formation from air bubbles.
It is a very quick and inexpensive copying method for functional prototypes and is preferred for the production of moulded polyurethane for example the automotive industry.
Vacuum Casting - Benefits at a glance:
- cheaply and quickly (within 5-8 working days)
- Cost-effective form of production
- Production from one to several hundred pieces
- Prototypes and small series
- High reproduction accuracy
- Current vacuum casting materials cover a wide range of commercial plastics and deliver functional parts that can be compared for some properties with subsequent injection moulded high volume parts
- The extensive range of resins allows the reproduction of virtually any plastic used for the production stage
- The materials can be transparent glass filled, dyed or rubbery, and should achieve the production of very-series models, especially in combination with a surface finishing