Research into gas injection in plastic moulding (GAIM)
Pekago is currently investigating the possibilities of using hybrid gas-assisted processes to improve the design advantages of SFM and to eliminate the coating or reduce the required pre-processing.
Structural foam moulding (SFM)
Structural foam moulding (SFM) is a special type of injection moulding. An additive, in the form of a foaming agent, is added to the plastic granulate. The additive gasifies during injection into the mould. The expanding gas creates 'pressure from the inside' that fills the entire mould and therefore makes far greater wall thicknesses and wall thickness differences possible than conventional injection moulding.
SFM products are usually coated (lacquered) to cover the silver streaks on the surface of the products.
Improve design advantages SFM
Pekago sees opportunities in the further development of the SFM technique using hybrid processes to improve the design advantages of SFM and to eliminate the coating or reduce the required pre-processing. Expansion of the freedom of design increases the possibilities for integration of design and stiffness in a single component without the need to incorporate reinforcements (added expense) in the design.
Our 1500 tonne injection moulding machine has two injection units with which various raw materials can be used simultaneously in a production cycle. The machine is also equipped for control of localised gas injection in the mould, thus allowing gas assisted injection moulding (GAIM) to take place.
Actual moulding tests have been performed in which foaming agents and localised gasinjection have been used simultaneously. Initial conclusions drawnfrom the results indicate potential for achieving considerable costand design benefits.
Interested in Gas Injection?
If you are interested in participating in the further development of this technology or have specific applications in which stiffness, design and cost-reduction play a role, you can let us know via the contact form.