Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1987-02-13
1988-05-10
Dawson, Robert A.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
118245, 156 72, 156578, 4272071, 427428, 428 95, 428 96, B32B 3108, B32B 3112
Patent
active
047433302
ABSTRACT:
An improved method and apparatus for applying adhesive to a backing fabric, such as for adhesively laminating a secondary fabric backing to a carpet. The adhesive is formed into a layer of predetermined thickness on the surface of a rotating casting roller, and the backing fabric is conveyed along a path adjacent to the casting roller in a direction opposite to the direction of rotation of the casting roller. A press blade brings sucessive portions of the backing fabric into contact with a portion of the casting roller, and the adhesive layer on the casting roller is transferred to the backing fabric at an adhesive contact point. The backing fabric is then conveyed abruptly away from the casting roller at the adhesive contact point in a substantially radial direction. This abrupt lateral disengagement of the backing fabric from the casting roller prevents the backing fabric from being dragged through the oncoming layer of adhesive on the casting roller, and further prevents the cohesive interaction between the layer of adhesive on the casting roller and the deposited layer of adhesive on the back of the backing fabric which can pull adhesive off the backing fabric back onto the casting roller or vice-verse.
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patent: 4267215 (1981-05-01), Riggs
patent: 4379730 (1983-04-01), Anderson et al.
patent: 4632850 (1986-12-01), Tillotson
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