Back to results
US 2026/0201612 A1Published application
Polyethylene terephthalate-based fabric hook-and-loop fastener and method for manufacturing same
AssigneeKuraray Fastening Co., Ltd.
InventorsYoshikatsu Fujisawa, Makoto Sagara
Life of this patent
Estimating the term…
Abstract
Provided is a hook-and-loop fastener woven from polyethylene terephthalate-based yarns. A resin layer (6) made of a polyethylene terephthalate-based resin copolymerized with isophthalic acid and having a melting point of 160 to 210° C. is directly stacked on a second surface of a base fabric (5) that is a woven fabric obtained using yarns made of a polyethylene terephthalate-based resin as a warp yarn (2), a weft yarn (3), and a yarn (3) for engaging elements.
Claims15
1:
- A polyethylene terephthalate-based woven fabric hook-and-loop fastener comprising a base fabric which is a woven fabric woven from a warp yarn, a weft yarn, and a yarn for engaging elements, wherein a first surface of the base fabric is a front side, a second surface of the base fabric is a back side, the yarn for engaging elements is woven into the base fabric in parallel to the warp yarn, a number of hook-shaped and/or loop-shaped engaging elements formed from the yarn for engaging elements and rising from the first surface of the base fabric exist on the first surface of the base fabric, each of the warp yarn, the weft yarn, and the yarn for engaging elements comprises a yarn made of a polyethylene terephthalate-based resin, and the woven fabric hook-and-loop fastener satisfies the following configurations 1) and 2):
- 1) a binder layer made of a polyethylene terephthalate-based resin copolymerized with isophthalic acid and having a melting point of 160 to 210° C. is provided on the second surface of the base fabric, and the yarn for engaging elements is directly bonded and fixed by the resin of the binder layer;
- and
- 2) the resin of the binder layer does not exist on the first surface of the base fabric.
1 more element
2:
- A polyethylene terephthalate-based woven fabric hook-and-loop fastener comprising a base fabric which is a woven fabric woven from a warp yarn, a weft yarn, and a yarn for engaging elements, wherein a first surface of the base fabric is a front side, a second surface of the base fabric is a back side, the yarn for engaging elements is woven into the base fabric in parallel to the warp yarn, a number of hook-shaped and/or loop-shaped engaging elements formed from the yarn for engaging elements and rising from the first surface of the base fabric exist on the first surface of the base fabric, each of the warp yarn, the weft yarn, and the yarn for engaging elements comprises a yarn made of a polyethylene terephthalate-based resin, and the woven fabric hook-and-loop fastener satisfies the following configurations 1) and 2):
- 1) a binder layer made of a polyethylene terephthalate-based resin copolymerized with isophthalic acid and having a melting point of 160 to 210° C. is provided on the second surface of the base fabric, a part of the resin of the binder layer enters an interior of the base fabric, and at a location where the yarn for engaging elements is tucked under the weft yarn on the second surface of the base fabric, the yarn for engaging elements is bonded by the resin forming the binder layer, in substantially an entire area;
- and
- 2) at a location where the warp yarn and the yarn for engaging elements cross over the weft yarn on the first surface of the base fabric, the warp yarn and the yarn for engaging elements are not bonded to the weft yarn.
1 more element
3:
- The polyethylene terephthalate-based woven fabric hook-and-loop fastener as claimed in claim 1, wherein at least one of the warp yarn or the weft yarn is a yarn made of a polyethylene terephthalate-based resin copolymerized with isophthalic acid and having a melting point of 250 to 257° C.
4:
- The polyethylene terephthalate-based woven fabric hook-and-loop fastener as claimed in claim 1, wherein the yarn for engaging elements is a yarn made of a polyethylene terephthalate-based resin copolymerized with isophthalic acid and having a melting point of 250 to 265° C.
5:
- The polyethylene terephthalate-based woven fabric hook-and-loop fastener as claimed in claim 1, wherein each of the warp yarn, the weft yarn, and the yarn for engaging elements is made of a copolymerized polyethylene terephthalate resin comprising 1.0 to 2.0 mol % of isophthalic acid with respect to a total amount of dicarboxylic acid and 2.0 to 3.5 mol % of diethylene glycol with respect to a total amount of diol as copolymerization components.
6:
- The polyethylene terephthalate-based woven fabric hook-and-loop fastener as claimed in claim 1, wherein the binder layer bonded to the second surface of the base fabric comprises a number of holes which penetrate the layer in a thickness direction.
7:
- A textile product comprising the polyethylene terephthalate-based woven fabric hook-and-loop fastener as claimed in claim 3, wherein the textile product is made of a polyethylene terephthalate-based resin, and the polyethylene terephthalate-based woven fabric hook-and-loop fastener is attached to the textile product and is dyed in the same color with the same disperse dye as the textile product.
8:
- A method for producing a polyethylene terephthalate-based woven fabric hook-and-loop fastener, the woven fabric hook-and-loop fastener comprising a base fabric which is a woven fabric comprising a warp yarn made of a polyethylene terephthalate-based resin copolymerized with isophthalic acid, and a weft yarn and a yarn for engaging elements each of which comprises a yarn made of a polyethylene terephthalate-based resin, wherein a first surface of the base fabric is a front side, a second surface of the base fabric is a back side, the yarn for engaging elements is woven into the base fabric in parallel to the warp yarn, a number of hook-shaped and/or loop-shaped engaging elements formed from the yarn for engaging elements and rising from the first surface of the base fabric exist on the first surface of the base fabric, and a binder layer made of a polyethylene terephthalate-based resin copolymerized with isophthalic acid and having a melting point of 160 to 210° C. is provided on the second surface of the base fabric, the method comprising the following A, B, and C which are performed in this order:
- [A] weaving a woven fabric from the warp yarn and the weft yarn by weaving the yarn for engaging elements in parallel to the warp yarn, and at the same time, causing the yarn for engaging elements to regularly rise into a loop shape from the first surface of the base fabric in a loop shape at a location where the yarn for engaging elements crossover the weft yarn, to weave a loop woven fabric;
- [B] applying the resin for the binder layer to the second surface of the base fabric to bond and fix the yarn for engaging elements by the resin for the binder layer;
- and
- [C] heating the first surface side of the loop woven fabric and then cooling the first surface side of the loop woven fabric to fix the loop shape, and cutting one leg of each loop to make the loop into a hook-shaped engaging element, if each loop is made of a monofilament yarn.
2 more elements
9:
- The method as claimed in claim 8, wherein the [B] is applying the resin for the binder layer in a melted state and in a form of a film-like material to the second surface of the loop woven fabric, directly pressing the resin onto the second surface of the loop woven fabric and densifying the loop woven fabric to cause a part of the film-like material to enter an interior of the second surface of the base fabric, and then cooling and solidifying a molten resin to bond the resin to the yarn for engaging elements.
10:
- The method as claimed in claim 8, wherein the film-like material made of the resin for the binder layer is obtained by heating and melting a fiber sheet.
11:
- The method as claimed in claim 8, wherein at least one yarn selected from the group consisting of the warp yarn, the weft yarn, and the yarn for engaging elements is a yarn made of a polyethylene terephthalate-based resin copolymerized with isophthalic acid and having a melting point of 250 to 265° C.
12:
- The method as claimed in claim 8, wherein each of the warp yarn, the weft yarn, and the yarn for engaging elements is a yarn made of a copolymerized polyethylene terephthalate resin comprising 1.0 to 2.0 mol % of isophthalic acid with respect to a total amount of dicarboxylic acid and 2.0 to 3.5 mol % of diethylene glycol with respect to a total amount of diol as copolymerization components.
13:
- The method as claimed in claim 8, wherein the yarns] used as the warp yarn, the weft yarn, and the yarn for engaging elements and made of the polyethylene terephthalate-based resin have a dry heat shrinkage rate in a range of 10 to 35% at 200° C.
14:
- The method as claimed in claim 8, comprising forming a through hole in the binder layer.
15:
- A method for producing a textile product with a polyethylene terephthalate-based woven fabric hook-and-loop fastener, the method comprising:
- attaching the polyethylene terephthalate-based woven fabric hook-and-loop fastener as claimed in claim 3 to a textile product made of a polyethylene terephthalate-based resin;
- and dyeing the textile product and the polyethylene terephthalate-based woven fabric hook-and-loop fastener attached thereto simultaneously to the same color with a disperse dye.