Pile weatherstripping (20) having an integral fin is made by wrapping a fin material around a traveling mandrel or band (14), winding pile material around the fin material and the band (14), attaching a pair of backer elements to the pile material along opposite edges of the band, and then cutting the...http://www.google.ca/patents/US7419555?utm_source=gb-gplus-sharePatent US7419555 - Pile weatherstripping manufacturing apparatus and method
