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Structural Rigid Foams
15-05-2023
Structural foam moulding is a process that allows huge flexibility with the size and weight of structural parts. Though similar to injection moulding, this method uses much less pressure allowing components to have differing wall sections and characteristics. The end product tends to be lightweight and rigid with a relatively hard surface.
The structural foam moulding process requires a gas to be mixed with the selected material. This mixture is injected into a mould where the gas expands, filling the mould cavity. Alternatively, the same results are achieved by chemical reaction within the polyurethane material creating a foaming action. When the foaming plastic touches the cold mould wall it solidifies, producing a tough outer skin.
Advantages
Tough outer skin with a lightweight rigid core
Can be finished or Painted to a high standard
Significantly lower tooling costs
Excellent chemical and heat resistant qualities
Other metal, wood or plastic sub components can be moulded in
Acoustic properties
Flame retardant
Antibacterial and antimicrobial properties can be achieved
Parts can be RFI shielded
For more information on Structural Rigid Foams talk to Mewett Polyurethane
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