Traverse wound double-sided pressure sensitive adhesive tape
AssigneeRayven, Inc.
InventorJoseph S. Heinemann
Life of this patent
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Abstract
A spool of traverse wound double-sided PSA tape and method of making same. The PSA tape includes an adhesive body with an upper adhesive surface releasably adhered to a bottom side of a release liner having a release value. At least one reinforcing strand is disposed longitudinally through the adhesive body. The PSA tape is traverse wound onto a core in successive winding layers with each successive winding layer producing an outer winding layer with the bottom side of its adhesive body crossing at an angle over the top side of the release liner of a preceding inner winding layer. The tensile strength of the at least one reinforcing strand is greater than a Resistance Bond of the outer winding layer to the preceding inner winding layer.
Claims26
A spool of traverse wound double-sided pressure sensitive adhesive (PSA) tape, comprising:
- a) a core;
- b) a length of double-sided PSA tape, the tape comprising:
- (i) an adhesive body having a lower adhesive surface, an upper adhesive surface, a thickness and a width;
- (ii) a release liner having a top side, a bottom side, and a width, the top side of the release liner having a release coating with a first release value, the bottom side of the release liner having a release coating with a second release value, wherein the second release value is greater than the first release value, the width of the release liner having a width at least as wide as the width of the adhesive body, the bottom side of the release liner being adhered to the upper adhesive surface of the adhesive body along the length of the tape;
- (iii) at least one longitudinal reinforcing strand disposed longitudinally through the adhesive body along the length of the tape, the at least one longitudinal reinforcing strand having a strand tensile strength;
- (c) wherein the length of the tape is traverse wound onto the spool in successive winding layers with each successive winding layer producing an outer winding layer with the bottom side of its adhesive body crossing at an angle over the top side of the release liner of a preceding inner winding layer;
- (d) wherein the strand tensile strength is greater than a Resistance Bond of the outer winding layer to the preceding inner winding layer;
- and
- (e) wherein the spool includes a portion which is spiral wound, and wherein said spiral wound portion includes a length of the release liner and the at least one longitudinal strand without the adhesive body.
A method of producing a double-sided pressure sensitive adhesive (PSA) tape, comprising:
- (a) drawing a release liner under an adhesive head, the release liner having a top side, a bottom side, and a width, the top side of the release liner having a release coating with a first release value, the bottom side of the release liner having a release coating with a second release value, wherein the second release value is greater than the first release value, and wherein the release liner is drawn under the adhesive head with the bottom side having the second release value facing the adhesive head;
- (b) drawing at least one reinforcing strand under the adhesive head, the reinforcing strand aligned with and disposed above the release liner, the at least one reinforcing strand having a strand tensile strength;
- (c) dispensing pressure sensitive adhesive (PSA) through the adhesive head over the at least one reinforcing strand and onto the release liner, thereby producing a PSA tape with an adhesive body having the at least one reinforcing strand extending longitudinally through the adhesive body;
- (d) traverse winding the PSA tape onto a core in successive winding layers with the adhesive body of the traverse wound PSA tape disposed inwardly toward the core, wherein each successive winding layer produces an outer winding layer with the bottom side of its adhesive body crossing at an angle over the top side of the release liner of a preceding inner winding layer;
- (e) wherein a tensile strength of the at least one reinforcing strand is greater than a Resistance Bond of the outer winding layer to the preceding inner winding layer;
- (f) spiral winding a length of the release liner and the at least one strand without the adhesive body, prior to traverse winding the PSA tape.
Dependencies are inferred from the claim text.