Stock material or miscellaneous articles – Pile or nap type surface or component – Particular backing structure or composition
Patent
1988-06-06
1990-07-17
Ball, Michael W.
Stock material or miscellaneous articles
Pile or nap type surface or component
Particular backing structure or composition
428 96, 428290, 428291, 156247, B32B 116, B32B 3100
Patent
active
049420747
ABSTRACT:
A method of backing carpeting material 19 with hot-melt compositions such as atactic polypropylene (APP or bitumen (with or without additives) comprises carefully doctoring selected thicknesses of the composition to the undersurface of the material 19 with the wear surface of the material uppermost. In one arrangement (FIG. 3) this is achieved using a lick roll arrangement 20 incorporating a doctor blade, cooling the backed product at cooling zones 28, 29 and applying the material to a nip formed by rollers 21. In another arrangement (FIG. 1) this is achieved by doctor box 16 applying the composition to a carrier 13, the carpeting material 19 then being laminated at roll 21 to the layer of composition, the laminate then being cooled before being stripped from the carrier 13. In a further arrangement (FIG. 2) the carrier is in the form of sheet material 15 which is supported by endless belt 13 and which is bonded into the hot-melt composition to become an integral part thereof.
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Bell Peter W.
Queen David S.
Smith John B.
Ball Michael W.
Crowley Richard P.
Falasco Louis
Sanquhar Tile Services Limited
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