Method of making adhesive tape with adhesive free zones

Coating processes – Coating remains adhesive or is intended to be made adhesive – Pressure sensitive adhesive

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427211, 427286, 427358, 427359, 4273855, 427428, B05D 512

Patent

active

059224029

ABSTRACT:
A method of manufacturing adhesive tape by applying a coating of liquid adhesive to a surface of a continuous web substrate moving in a longitudinal direction to create an adhesive-free zone on the web substrate that extends in a longitudinal direction between areas of adhesive coating on the web substrate and by contacting the surface of the moving continuous web substrate carrying the applied liquid adhesive coating with a rotating metering rod to obtain an adhesive coating with a predetermined specific thickness, wherein the metering rod has an elastomeric wiper contacting the rod and wiping the rod at a location along the length of the rod that corresponds to the transition between the adhesive-free zone and the adhesivecontaining zone on the coated web substrate, to prevent edge buildup of applied adhesive at the transition on the coated web substrate. Adhesive tape made by this method is characterized by having an adhesive coating of uniform thickness, being free of adhesive edge buildup in the coating adjacent to an adhesive-free zone on the tape.

REFERENCES:
patent: 2054448 (1936-09-01), Russell
patent: 2684316 (1954-07-01), Warshaw
patent: 2819180 (1958-01-01), Koenig
patent: 4647485 (1987-03-01), Nelson
patent: 5366775 (1994-11-01), Kao
D.M. MacLeod, "An Introduction to Wire-Wound Rod Coating," Industry Tech, Oldsmar, Florida, pp. 103-111 (undated);
"Why Choose Carton Sealing Tapes Made with Acrylic Adhesives?", Brochure RRA-1, Rohm and Haas Co., Philadelphia, PA, pp. 1-7 (undated).

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