Drywall corner trim material with adhesive

摘要

A re-moistenable adhesive-coated drywall corner trim piece having an elongated semi-rigid core piece with a right and left flange, where the semi-rigid core piece has a centerline along which the flanges meet forming a hinge that can be bent and re-bent to any angle any number of times. The piece can also include a step running longitudinally along each of the flanges that can be located between the centerline and the flange edges so that the flanges change from a thicker portion toward the centerline to a thinner portion toward the edges making the piece boxable (capable of being wet mudded simultaneously on both sides without an intermediate drying step). Flanges can be curved slightly inward for perfect bonding.

主权项

1. A drywall corner piece comprising:
a continuously extruded, laminated, three-layer construction with an elongated semi-rigid member having two flanges extending from a centerline to flange edges, said flanges forming an acute angle about said centerline and having a room-facing side and a wall-facing side; each of said flanges having an arcuate portion with a radius of curvature facing toward the wall-facing side, each flange comprises a flat portion that extends between the centerline and a respective one of the arcuate portions, and the radius of curvature of each flange extends from the flat portion to a respective one of the flange edges; the three-layer construction comprising an outer, room-facing fibrous material continuously laminated to the elongated semi-rigid member, and an inner, wall-facing fibrous material also continuously laminated to the elongated semi-rigid member; and the inner, wall-facing fibrous material being continuously coated with a water-activated adhesive.