Patent ID: 7383668

Claim:
A co-extruded plastic mud-on drywall accessory for drywall construction, comprising: an elongated plastic core strip of rigid plastic, having a thickness and inward and outward faces, longitudinal first and second edges, and a longitudinal arcuate channel forming a nose portion extending from edge to edge and a length from a first end to a second end, at least said first edge of said core strip being formed with an inward step along the length thereof; a first hinge portion of flexible plastic integral with the nose portion and extending outwardly along the length of the step; and a first integral plastic wing portion having a thickness less than the thickness of the nose portion and in the range of about 0.008-0.015 inch and extending from end to end of the strip and outwardly from the hinge portion; said first hinge portion tapered from a thickness of the nose portion to the thickness of the first wing portion.