Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1987-04-15
1988-04-12
Czaja, Donald E.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156246, 156250, 156298, 428 95, B29B 116, B32B 106, C09J 318
Patent
active
047372214
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.
Compo Scotland Limited
Crowley Richard P.
Czaja Donald E.
Falasco Louis
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