Abstract: A paint roller grid includes a wiping surface surrounded by a frame member having a pair of spaced apart hooks connected to the upper edge of the frame member for releasably attaching the grid to a container rim. The hooks may be spaced laterally outwardly from opposite ends of the upper edge of the frame member to provide spaces therebetween for receipt of portions of the upper rim and upper side wall of the container in the spaces. A plurality of spaced apart tabs may be provided along the side edges of the grids for connecting two or more such grids together along their respective side edges to form a paint roller grid assembly comprising two or more such grids.

Abstract: A paint roller grid includes a wiping surface surrounded by a frame member having a pair of spaced apart hooks connected to the upper edge of the frame member for releasably attaching the grid to a container rim. The hooks may be spaced laterally outwardly from opposite ends of the upper edge of the frame member to provide spaces therebetween for receipt of portions of the upper rim and upper side wall of the container in the spaces. A plurality of spaced apart tabs may be provided along the side edges of the grids for connecting two or more such grids together along their respective side edges to form a paint roller grid assembly comprising two or more such grids.

Abstract: A method and apparatus for making paint roller covers by spirally advancing a thermoplastic tubular form past a plurality of electronic corona discharge heads arranged in a helical path around the tubular form to subject substantially the entire exterior surface of the tubular form to high frequency, high voltage sparks as the tubular form spirally advances past the heads to make substantially the entire exterior surface more receptive to adhesion when a uniform layer of epoxy adhesive is subsequently applied to the treated exterior surface of the tubular form. Next a fabric strip is spirally wrapped over the epoxy adhesive to bond the fabric strip to the tubular form. To make the exterior surface of the tubular form still more receptive to adhesion, the exterior surface may be preheated immediately prior to treating the exterior surface with high voltage sparks.