Patent ID: 7238235
Filing Date: 2007-07-03
Classification: B05B,B05D

Abstract:
1. An adhesion promoter application system for coating thermoplastic polyolefin elements with a layer of adhesion promoter having minimal defects, comprising: a plurality of carriers for moving said thermoplastic polyolefin elements through said system with each polyolefin element angled from vertical toward the direction of travel of said carrier; a device for mixing an adhesion promoter with de-ionized water to form a mixture; a storage device for storing a supply of said mixture; an enclosure for providing a protected environment during application of said mixture to thermoplastic polyolefin elements located therein; an adhesion promoter application device within said enclosure for flowing said mixture with minimum agitation over said thermoplastic polyolefin elements, said adhesion promoter application device further comprising: a pump for supplying said mixture from said storage device to said gravity tank; an atmosphere controller for regulating the atmosphere within said enclosure; and a drying device for drying said mixture after application to said thermoplastic polyolefin elements; wherein agitation of said mixture during application thereof to said thermoplastic polyolefin elements is minimized by use of said adhesion promoter application device, thereby reducing or eliminating defects in a dried layer of adhesion promoter that remains on said thermoplastic polyolefin elements after said thermoplastic polyolefin elements pass through said drying device.