Wallboard corner finishing strip

摘要

A corner bead strip is provided for finishing a wallboard corner joint, includes a flexible plastic body having a first flange and a second flange, each flange with a corner edge and an opposite free edge. The corner edges are joined by a central flex zone formed by a plastic composition distinct from a plastic composition used for forming the flanges. A web of paper covers a surface of the body.

主权项

1. A corner bead strip for finishing a wallboard corner joint, comprising:
a flexible plastic body including a first flange and a second flange, each said flange having a corner edge and an opposite free edge, said corner edges being directly joined by a central flex zone encompassing a longitudinal axis of said strip, said flex zone being formed by a first plastic composition in a first region distinct from and more flexible that a second plastic composition in a second region used for forming said flanges, said first region provided with a “V”-shaped recess between said corner edges, said second region tapering toward each of said free edges, said flexible body being configured for being bendable about said axis to a 90-degree angle, and retaining said bent angle without relaxing back to an initial flat position; said first and second plastic compositions are taken from the group consisting of polystyrene, PVC, PET, and polycarbonate, and at least one of said compositions including a flexibility modifier; and a web of paper covering a surface of said body.