Patent ID: 7981173

Claim:
A process of making an abrasive laminate, which includes the steps of: (a) providing a first flexible abrasive sheet having a first side and a second side, said second side coated with abrasive particles; (b) applying active foaming material in a pre-mixed form to said first side; (c) providing a second flexible sheet in a manner to contact said active foaming material to form an uncured laminate; and (d) forcibly maintaining said first sheet and said second sheet at a predetermined spaced parallel distance relative to one another, wherein said sheets are not in contact with another and form only a partially confined predetermined fillable region during a curing period to form a predetermined thickness of said foaming material such that said foaming material bonds to said first sheet and said second sheet and by virtue of said forcibly maintained sheets, wherein said foaming material expands outward therebetween toward an unconfined area and upon curing forms a laminate.