B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1014
B29C 70/00 (2006.01) B29C 67/24 (2006.01) D04H 1/00 (2006.01) D04H 1/72 (2006.01)
Patent
CA 1107930
APPARATUS AND PROCESS FOR FORMING A MINERAL WOOL FIBERBOARD PRODUCT Abstract of the Disclosure An apparatus for forming a mineral wool fiberboard product is described which includes means for separating mineral wool fibers and means for intimately mixing said fibers with a thermosetting powdered binder, means for entraining said mixture of fibers and binder in an air stream including means for directing said air stream into a mat-forming zone formed by converging upper and lower forming wires, means for exhausting air through said forming wires whereby the fiber and binder mixture is collected as two layers on the forming wires with the two layers becoming consolidated at the nip opening formed between the con- verging screens, and compacting and heating means whereby the mat of fibers and resins is compacted and cured to form a mineral fiberboard product, said exhaust system behind said screens being adjustable whereby the upper and lower outer layers of fibers and resins initially formed on said screens is comprised of an enriched layer of predominantly fine fibers. A preferred embodiment is disclosed wherein additional means are provided for positioning an open mesh glass fabric between the lower forming wire and the layer of fibers and resins being formed thereover, said fabric acting as a carrier for the board-forming mat. The process utilizing this apparatus is also described.
289463
Garrick John R.
Kottmeyer Richard E.
Armstrong World Industries Inc.
Gowling Lafleur Henderson Llp
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