B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
117/161, 18/644
B32B 5/18 (2006.01) D06N 7/00 (2006.01)
Patent
CA 1191311
Abstract A mixture of vinyl plastisol, suspension grade resin and expanded perlite is prepared in a manner such that the particles of perlite are not significantly damaged. The mixture is placed on a substrate and fused, thereby producing a foam-like material which is usable as a decorative covering. Alternatively, the mixture can be cast on a release surface and allowed to stand until the majority of the perlite particles have migrated to the top surface, thus leaving a layer of material containing substantially no perlite along the lower surface which interfaces with the release surface. Upon fusing this stratified mixture and separating the release surface, the fused material is inverted. The layer of material which contains substantially no perlite becomes the protective surface and the remaining portion of the fused material, which is foam-like in nature, becomes the resilient support. Such syntactic foams may be used as replacements or substitutes for mechanically frothed of chemically blown foams.
415886
Armstrong World Industries Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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