Gas assisted injection moulding
AssigneeHuntsman International LLC
InventorsAlan Nigel McClelland, Ajay Devidas Padsalgikar
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Abstract
Manufacture of molded polyurethane or molded polyurethane containing products, especially thermoplastic products, such as elastomers, flexible foam, and rigid foam using gas assisted injection molding. Preferred polyurethane products are thermoplastic polyurethanes.
Claims9
A process for making moulded thermoplastic polyurethane products having a density of at most 800 k/m3 characterized by using gas assisted injection moulding, whereby gas counter pressure is being used together with the gas assisted injection moulding and whereby polymer for making the moulded thermoplastic polyurethane products contains expandable microspheres.
Dependencies are inferred from the claim text.