FOAM MOULDING POLY(METH)ACRYLIMIDE PARTICLES IN CLOSED MOULDS FOR PRODUCING RIGID FOAM CORES
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United States of America Patent
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Mar 30, 2017
app pub date -
May 13, 2015
filing date -
May 19, 2014
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Abstract
The invention relates to a process for the production of mould-foamed poly(meth)acrylimide (P(M)I) cores, in particular of polymethacrylimide (PMI) cores, which can be used by way of example in automobile construction or aircraft construction. A feature of this process is that polymer granules or polymer powder are charged to a compression mould where they are foamed. A particular feature of the process is that said two-shell compression mould has, respectively on both sides, a cavity that conforms to the shape and which serves for both the heating and the cooling of the granules and, respectively, of the rigid foam core produced therefrom.
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