US 2025/0169578 A1 · FLAME-RETARDANT HOOK-AND-LOOP FASTENER

Abstract

A flame-retardant hook-and-loop fastener including: a base fabric woven from a warp yarn formed of a polyphenylene sulfide-based multifilament yarn, a weft yarn formed of a polyphenylene sulfide-based multifilament yarn and a multifilament yarn formed of a heat-fusible filament, and a yarn for an engaging element formed of at least one selected from the group consisting of a polyphenylene sulfide-based multifilament yarn and monofilament yarn; and the engaging element formed of the yarn for the engaging element and being present in a front face of the base fabric, in which a thickness of the warp yarn in a base fabric thickness direction at a position at which the warp yarn, which alternately runs over and under the weft yarn with the weft yarn interposed therebetween, subducts most toward a rear face side is 0.94 times or less of a thickness of the warp yarn in the base fabric thickness direction at a position at which the warp yarn floats most toward a front face side.

Claims14

Dependent claims

A flame-retardant hook-and-loop fastener comprising:

a base fabric woven from a warp yarn formed of a polyphenylene sulfide-based multifilament yarn, a weft yarn formed of a polyphenylene sulfide-based multifilament yarn and a multifilament yarn formed of a heat-fusible filament, and a yarn for an engaging element formed of at least one selected from the group consisting of a polyphenylene sulfide-based multifilament yarn and monofilament yarn, and
the engaging element formed of the yarn for the engaging element and being present on a front face of the base fabric.
wherein a thickness of the warp yarn in a base fabric thickness direction at a position at which the warp yarn, which alternately runs over and under the weft yarn with the weft yarn interposed therebetween, subducts most toward a rear face side is 0.94 times or less of a thickness of the warp yarn in the base fabric thickness direction at a position at which the warp yarn floats most toward a front face side.

A method for producing a flame-retardant hook-and-loop fastener, the flame-retardant hook-and-loop fastener comprising:

a base fabric woven from a warp yarn formed of a polyphenylene sulfide-based multifilament yarn, a weft yarn formed of a polyphenylene sulfide-based multifilament yarn and a multifilament yarn formed of a heat-fusible and heat-shrinkable filament, and a yarn for an engaging element formed of at least one selected from the group consisting of a polyphenylene sulfide-based multifilament yarn and monofilament yarn, and
at least one selected from the group consisting of a large number of hook-shaped engaging elements and a large number of loop-shaped engaging elements, formed of the yarn for the engaging element and present on the front face of the base fabric,
wherein step A, step B, step C, and step D as described below are performed in this order:
[step A] a step of, at a time of weaving the base fabric from the warp yarn and the weft yarn, weaving the yarn for the engaging element into the warp yarn in parallel, and at the same time, allowing the yarn for the engaging element to regularly run over the warp yarn, and raising the yarn for the engaging element in a loop shape from the front face of the base fabric at a running-over position to weave a loop woven-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 multifilament yarn made of the heat-fusible and heat-shrinkable filament is melted, heat-shrinking the multifilament yarn made of the heat-fusible and heat-shrinkable filament, and fixing the yarn for the engaging element to the base fabric by a melt from the multifilament yarn made of the heat-fusible and heat-shrinkable filament;
[step C] a step of taking out the loop woven-fabric from the heating region of the step B and sliding a rear face of the base fabric on a fixed surface or a roll surface while pressing the rear face against the fixed surface or the roll surface in a state in which the heat-fusible component of the multifilament yarn made of the heat-fusible and heat-shrinkable filament is melted;
[step D] a step of taking out the loop woven-fabric from the step C, cooling the loop woven-fabric, and then cutting one leg of the loop to form a hook-shaped engaging element from the loop when the yarn for the engaging element is a monofilament yarn.

4 more elements

Dependencies are inferred from the claim text.

Flame-retardant hook-and-loop fastener

Life of this patent

Flame-retardant hook-and-loop fastener

Life of this patent

Abstract

Claims14