Process for preparing multihardness foam articles

Details Process for preparing multihardness foam articles Process for preparing multihardness foam articles

B - Operations, Transporting

32

B

18/646

B32B 5/18 (2006.01) B29C 44/04 (2006.01)

Patent

CA 2016361

ABSTRACT PROCESS FOR PREPARING MULTIHARDNESS FOAM ARTICLES A multihardness foamed seat having side rolls comprising one or more zones of a second polyurethane foam encapsulated in a first polyurethane foam is prepared by arranging the seat mould so that the side roll well is inclined in a direction parallel to its length, introducing a liquid first foam formulation into the side roll well, and then intoducing a liquid second foam formualtion within a time interval corresponding to between 0.01t to 1.5t where t is the cream time of the first foam formulation. The process is particularly useful for the preparation of automobile seats having side rolls. C-38,804-F

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