Process for making foam-in-foam polyurethane foam buns,...

Details Process for making foam-in-foam polyurethane foam buns,... Process for making foam-in-foam polyurethane foam buns,...

B - Operations, Transporting

29

C

403/42, 18/644

B29C 67/20 (2006.01) B29B 17/00 (2006.01) B29C 44/04 (2006.01)

Patent

CA 1269198

ABSTRACT OF DISCLOSURE An improved method for manufacturing a foam-filled polyurethane foam bun from foam particles having uniformly dispersed therewith large amounts of solid material bonded together with new polyurethane foam is described. The method comprises uniformly applying a liquid flexible polyurethane foam-forming material to a dispersion of foam particles and solid material to provide a blend, distributing the blend within a mold, and foaming and curing the foam-forming material by a plurality of steaming steps wherein the mold is flipped from a first to second position between steaming steps. The foam buns have a uniform density gradient. Foam buns are disclosed having a variation in density across the foam bun. There is also disclosed an improved char-forming foam obtained as a result of using boric acid in the foam- forming formulation.

500175

Affiliated with

Also associated with

Rating

Process for making foam-in-foam polyurethane foam buns,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for making foam-in-foam polyurethane foam buns,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making foam-in-foam polyurethane foam buns,... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1167672