Double-face elastic fabric with hook-and-loop properties

Abstract

A double-face fabric having elastic properties in its warp direction and provided with hook-and-loop properties, formed by the weaving of warp yarns and of weft yarns. The warp yarns are of four different types worked in different weaves with respect to the weft yarns, respectively: elastic yarns (A) worked in a taffeta weave; core yarns (B), formed of synthetic yarns texturized by false twist on the face, worked in a plain weave alternating with surface floats and having a linear strand density in the range from 10 to 25 dtex; core yarns (C) on the back side, formed of multifilament synthetic yarns, having a linear strand density in the range from 0.3 to 1.7 dtex, worked in a rep weave, alternating floats of great length on the back side and short binding areas on the face side, binding yarns, exclusively formed of thermo-adhesive synthetic yarns, having a melting point in the range from 80° C. to 160° C., worked in a plain weave.

Claims

1. A double-face fabric having elastic properties in its warp direction and provided with hook-and-loop properties, formed by weaving of warp yarns and of weft yarns, and wherein the warp yarns are of four different types worked in different weaves with respect to the weft yarns, respectively: elastic yarns (A) worked in a taffeta weave; core yarns (B), formed of synthetic yarns texturized by false twist on the face, intended to form the female element of the hook-and-loop structure, worked in a plain weave alternating with surface floats and having a linear strand density in the range from 10 to 25 dtex, in addition to a hot air shrinkage rate of at least 5%; a crimp contraction greater than 35%, a crimp modulus greater than 20% and a crimp stability greater than 65%; core yarns (C) on the back side, formed of multifilament synthetic yarns on the back, having a linear strand density in the range from 0.3 to 1.7 dtex worked in a rep weave, alternating floats of great length on the back side and short binding areas on the face side, and intended to ensure the comfort and the soft hand of this side of the fabric, yarns used as binding yarns, exclusively formed of thermo-adhesive synthetic yarns, having a melting point in the range from 80° C. to 160° C., worked in a plain weave, ensuring the maintaining of the extensible yarns in the central portion of the fabric and ensuring, after the finishing treatment, the blocking of the core yarns (B) (face yarns), forming the female element of the hook-and-loop system, and the blocking of the core yarns (C) (back yarns).

2. The double-face fabric having elastic properties in its warp direction and provided with hook-and-loop properties according to claim 1, wherein the elastic yarns (A) are formed by covered yarns having a 1240-decitex elastane core covered with a double cover of 2/78 decitex 23 strand texturized polyamide yarns.

3. The double-face fabric having elastic properties in its warp direction and provided with hook-and-loop properties according to claim 1, wherein the face core yarns (B) are formed by 220 dtex 10 strand texturized polyamide yarns having a hot air shrinkage is in the order of 8%.

4. The double-face fabric having elastic properties in its warp direction and provided with hook-and-loop properties according to claim 1, wherein the back core yarns (C) are formed by 2/78 dtex 68 strand texturized polyamide yarns.

5. The double-face fabric having elastic properties in its warp direction and provided with hook-and-loop properties according to claim 1, wherein the yarns used for binding (D) are formed of a thermo-adhesive copolymer, having a linear density in the range from 80 to 180 dtex and a melting point in the range from 80° C. to 160° C.

6. The double-face fabric having elastic properties in its warp direction and provided with hook-and-loop properties according to claim 5, wherein thermo-adhesive copolymer is selected from the group comprising thermo-adhesive copolyamide having a linear density close to 167 dtex and a melting point of 110° C. and thermo-adhesive copolyester, having a linear density close to 167 dtex and a melting point of 145° C.

7. The double-face fabric having elastic properties in its warp direction and provided with hook-and-loop properties according to claim 1, wherein the weft yarns (T) are formed by 4/78 dtex 23 strand texturized polyamide yarns, the take-up of the finished fabric being 64 picks per inch.

8. The double-face fabric having elastic properties in its warp direction and provided with hook-and-loop properties according to claim 1, wherein part (C1) of the core yarns (back yarns) takes at the selvedge of the fabric a rep weave with a weave repeat of 2, tending to improve the resistance of the edges of said fabric while preserving the comfort.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The foregoing features and advantages of the present invention will now be discussed in the following non-limiting description of a specific embodiment, in relation with the accompanying drawings.

(2) FIG. 1 schematically illustrates the working and the positioning of the warp yarns used in the manufacturing of fabrics according to the invention.

(3) FIG. 2 is a simplified perspective view of the structure of the fabric of FIG. 1.

(4) FIG. 3 is the conventional simplified representation of the weave repeat corresponding to the structure described in relation with FIGS. 1 and 2.

(5) FIG. 4 schematically illustrates the loom threading draft for the forming of the fabric of FIGS. 1 to 3.

DETAILED DESCRIPTION

(6) The following description is an embodiment of the invention, which is not meant to be limiting. In the case in point, it corresponds to a fabric obtained by means of a loom provided with a comb with 8.5 teeth per centimeter.

(7) The warp of yarns of the fabric is formed of the following types of yarns:

(8) elastic yarns (A) of covered yarns type formed of a 1240-decitex elastane core covered with a double cover of 2/78 decitex 23 strand texturized polyamide;

(9) face yarns (B) each formed of a 220 decitex 10 strand texturized polyamide;

(10) these yarns have (according to the DIN EN 14621 standard) a hot air shrinkage rate of at least 5% (according to the DIN EN ISO 53 840-T1 standard); a crimp contraction greater than 35%, a crimp modulus greater than 20% and a crimp stability greater than 65%;

(11) back yarns (C), each formed of a 2/78 decitex 68 strand texturized polyamide yarn;

(12) binding yarns (D), each formed of a thermo-adhesive copolyamide yarn of approximately 167 decitex, having a melting point of 110° C.

(13) The weft (T) is formed by a 4/78 decitex 23 strand texturized polyamide yarn and the take-up of the finished fabric is 64 picks per inch.

(14) The weaving is performed according to FIGS. 1 to 4, which show that the elastic yarns (A) are worked in a taffeta weave while the face yarns (B) are worked in a weave alternating 7-pick float areas and 5-pick taffeta areas, the back yarns (C) are worked in a 6/2 rep weave, and finally the yarns ensuring the binding (D) are worked in a plain weave.

(15) By doing so, an elastic fabric of very small thickness (˜1.8 mm), having a flat, compact and regular face side enabling this side of the fabric to form the female element of a hook-and-loop fastening system, and developing a flexibility, an appearance, and a durability greatly improved with respect to prior art hook-and-loop elastic fabrics, and having an even back side with a soft hand which provides a remarkable comfort, quite appreciable when it is intended, which is most often the case, to be in contact with the user's skin, is obtained.

(16) The above-described elastic fabric may be dyed by the various polyamide dyeing methods and the fusing temperature should be close to 120° C.

(17) According to an advantageous feature, part (C1) of the back yarns takes at the selvedge of the fabric a rep weave with a weave repeat of 2, tending to improve the resistance of the edges of said fabric while preserving the comfort.

(18) It is further important to note that the nature of the yarns used, as well as the design of the hook-and-loop elastic fabric of the invention, enables to cut it in all directions with the different techniques, including ultrasounds and laser, as well as to weld it by an ultrasound or high-frequency method or to glue it, which is a real advantage for all clothes making operations.

(19) Further, it very small thickness (typically close to 1.8 mm) enables to use such a fabric for articles where, to date, the relative thickness and the lack of flexibility of existing systems did not allow it; such as for example the manufacturing of underwear, the manufacturing of finger orthoses, . . . , and generally uses which simultaneously require the qualities exhibited by this fabric.