Patent ID: 8142599
Filing Date: 2012-03-27
Classification: B29C,B29L,B32B,Y10T

Abstract:
1. A method of making a composite cover material having an outer surface comprising pile and a smooth non-porous inner surface, the cover material for use in a method of making a laminated paint roller comprising the steps of, helically winding a strip of polypropylene material around a mandrel so as to form a helically wound strip, the strip having an outer surface, advancing the wound strip along the mandrel, applying a layer of polypropylene adhesive onto an outer surface of the wound strip, wrapping a strip of cover material about the wound strip and over the layer of adhesive and applying compression from without the cover material to urge the cover material, the layer of adhesive and strip of polypropylene material together thereby laminating the cover material to the strip, the method of making a cover material comprising the steps of: advancing a width of pile material having an underside and a pile side, underside up and pile side down, beneath a rotating roller; depositing a layer of molten material, the molten material predominantly comprising polypropylene, on the rotating roller such that the layer of molten material comes in contact with and is compressed against the underside of the advancing width of pile material as the pile material passes beneath the rotating roller and before the layer of molten material has a chance to harden and set; permitting the molten material to harden and set while in contact with the advancing width of pile material thereby forming a non-porous backed pile material; and cutting the non-porous backed pile material into strips of cover material.