Patent ID: 8551377

Claim:
A method of making a touch fastener product, the method comprising: feeding flowable resin and a preformed, sheet-form substrate into a nip between two rotating rolls, the rolls including a mold roll defining an array of cavities extending inward from a peripheral roll surface; forming a base layer of the resin laminated to a first side of the substrate under pressure while molding an array of discrete projections of the resin in the cavities, such that the projections and the base layer form a seamless mass of the resin; forming engageable heads of the resin on the projections, thereby forming an array of fastener elements extending from the base layer; and forming an array of discrete regions of the resin on a second side of the substrate opposite the projections, by pressing resin through apertures defined in the substrate by pressure in the nip, each discrete region comprising exposed resin surrounded by exposed substrate; wherein the flowable resin is fed into the nip so as to form the base layer of resin between exposed longitudinal edge regions of the sheet-form substrate on the first side of the substrate, and wherein the array of discrete regions is spaced from the longitudinal edges of the sheet-form substrate on the second side of the substrate.