Coating processes – Coating remains adhesive or is intended to be made adhesive – Pressure sensitive adhesive
Patent
1982-07-06
1984-09-18
Pianalto, Bernard D.
Coating processes
Coating remains adhesive or is intended to be made adhesive
Pressure sensitive adhesive
4272071, 427348, B05D 510
Patent
active
044724616
ABSTRACT:
An apparatus and method is disclosed herein for producing controlled perforations in an adhesive-coated porous web. A porous, woven or nonwoven web backing material has an adhesive, or the like, coated onto a surface thereof, and prior to drying of the adhesive thereon, a gas, or the like, is directed through a gas perforating means, which incorporates a plurality of apertures therein. While said gas perforating means is variably positioned in contiguous proximity to the moving adhesive-coated porous web, the gas stream impinges on the adhesive-coated porous web, resulting in a plurality of discontinuties or perforations being formed in the adhesive-coated porous web. Various predetermined patterns of perforations in the adhesive-coated web may be obtained by oscillating the gas perforating means in different directions, altering the physical dimensions of the apertures located in the gas perforating means, altering the spatial pattern of said openings, rotating the gas perforating means during the operation, and the like.
Cantor Frederick R.
Pianalto Bernard D.
The Kendall Company
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