Polyester-based woven hook-and-loop fastener and production method therefor

A method for producing a polyester-based woven hook-and-loop fastener, the polyester-based woven hook-and-loop fastener comprising:

• a woven-fabric and engaging elements,
• wherein the woven-fabric in which a polyethylene terephthalate-based multifilament yarn is a warp yarn and a polyester-based beat-fusible multifilament yarn is a weft yarn is a woven base fabric,
• a yarn for the engaging elements made of at least one kind selected from the group consisting of a polyethylene terephthalate-based monofilament yarn and a polyester-based multifilament yarn is woven in parallel to the warp yarn into the woven base fabric,
• the engaging elements that are formed of the yarn for the engaging elements, that are made of at least one kind selected from the group consisting of a large number of hook shapes and loop shapes, and that rise up from a front face of the woven base fabric exist on the front face of the woven base fabric, and
• step A, step B, and step D described below are performed in this order, and the multifilament yarn made of a copolymerized polyethylene terephthalate containing, as copolymerization components, 1.0 to 2.0 mol % of isophthalic acid with respect to a total amount of dicarboxylic acids and 2.0 to 3.5 mol % of diethylene glycol with respect to a total amount of diols is used as the warp yarn;
• [step A] a step of weaving a loop woven-fabric by, at a time of weaving the woven base fabric from the warp yarn and the weft yarn, weaving the yarn for the engaging elements parallel into the warp yarn, and at the same time, regularly raising the yarn for the engaging elements in a loop shape from the front face of the woven base fabric;
• [step B] a step of guiding the loop woven-fabric to a heating region, heating at a temperature equal to or higher than a temperature at which a heat-fusible component of the polyester-based heat-fusible multifilament yarn is melted, and fixing a rising part of a loop to the woven base fabric by a melt from the polyester-based heat-fusible multifilament yam;
• [step D] a step of cutting one leg of the loop to form loops into hook-shaped engaging elements when the loop is made of a monofilament yarn.