B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/646
B29C 44/04 (2006.01) B32B 5/14 (2006.01) B32B 5/20 (2006.01)
Patent
CA 1124971
Abstract of the Disclosure A multidensity polyurethane foam article suitable for use as a seat cushion includes a supportive layer of firm foam and a comfortable layer of softer foam. The multidensiiy article has a sag factor of about 3.0 to about 4.5, and the two foam layers are bonded together without employing adhesives. The multidensity foam article is pre- pared by placing a first formulation capable of yielding a firm foam into a mold and permitting said formulation to start creaming, rising and foaming; introducing a second liquid formulation capable of forming a soft foam into the mold after the first formulation has completed 10 to 80% of its potential rise so that the second formulation passes through the rising first formulation and the first formula- tion floats upon the second formulation; and then permitting the two formulations to cream, foam, rise and cure into a single multidensity article having a firm supportive foam layer and a soft foam layer, which layers are bonded and knitted together at their common boundary during the curing process.
335995
Milsco Manufacturing Company
Smart & Biggar
LandOfFree
Multidensity foam article and method of preparation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multidensity foam article and method of preparation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multidensity foam article and method of preparation will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-91921