Stock material or miscellaneous articles – Structurally defined web or sheet – Physical dimension specified
Patent
1985-04-08
1989-07-11
Cannon, James C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Physical dimension specified
191455, 28112, 156148, 181290, 181294, 428284, 428285, 428286, 428287, 428288, 428300, 428920, B32B 506, B32B 1712, E04B 176, E04B 188
Patent
active
048471402
ABSTRACT:
A nonwoven composite fibrous material adaptable as an insulation medium is formed by a loose layer of inorganic fibers, such as rock wool, glass, ceramic, carbon-graphite or the like, bonded together by at least one carrier web layer positioned on a surface of the inorganic fibrous layer. The carrier web layer is a blend of inorganic fibers and organic fibers with the organic fibers comprising about 1% or less by weight of the total nonwoven composite fibrous material. Both organic and inorganic fibers of the carrier web are advanced into interlocking relation with the fibers of the inorganic layer by needle punching the carrier web. The carrier web organic and inorganic fibers have a length greater than the thickness of the inorganic layer in the composite fibrous material so that the needle punching advances organic and inorganic fibers from the carrier web completely through the inorganic layer to mechanically bind together the fibers of the inorganic layer to resist separation of the fibers and delamination of the inorganic layer upon handling and installation.
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Cannon James C.
Helmic, Inc.
Price, Jr,. Stanley J.
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