Methods for manufacturing a paint roller and component parts thereof with adhesive of compounded material

摘要

Described are methods of making a paint roller using preformed strips or core material made from a compound of polypropylene and calcium carbonate having between 5% and 66% calcium carbonate by weight. One or various compounds may be used to form portions of one or multiple components that make up the paint roller, including, for example, the thermoplastic strips, adhesives and/or the backing of a composite cover material. The materials can be assembled in a continuous manufacturing process.

主权项

1. A method of making a paint roller comprising:
helically winding a strip of material around a mandrel so as to form a helically wound strip; advancing the wound strip along the mandrel; extruding a polypropylene-based compound to form a smoothly flowing layer of adhesive, the polypropylene-based compound comprising
(i) at least 5% but not more than 66% calcium carbonate by weight, and(ii) polypropylene; applying the smoothly flowing layer of adhesive onto an outer surface of the wound strip; wrapping a strip of composite cover material about the wound strip and over the layer of adhesive, the composite cover material having a compound backing, the compound backing comprising between 25% and 66% calcium carbonate by weight; and, allowing the adhesive to cool, thereby bonding the strip of composite cover material to the wound strip.