Touch fasteners and their manufacture

摘要

This invention relates to a method of fabricating a touch fastener comprising a substrate having an array of fastener elements extending integrally therefrom and a loop material attached to the substrate, the method comprising:
continuously introducing molten resin to a rotating mold roll defining a multiplicity of molding cavities extending inward from its periphery under conditions which cause the resin to fill the cavities to at least partially form the fastener elements and to form the substrate; and
attaching a continuous strip of the loop material to resin of the substrate in a nip defined between the mold roll and a pressure roll,
characterized in that attaching the loop material to the substrate comprises forming one or more regions of relatively high penetration of substrate resin into the loop material and one or more regions of relatively low penetration of substrate resin into the loop material.