JPWO2018202905A5 - - Google Patents

Description

According to the disclosure, the first elastic and conductive fibers and the second lower elastic fibers are commingled together under tension and disposed within the yarn core to form the second fibers. is stretched, thereby acting on the first fiber as it is stretched to help it return to the original length it had before it was stretched by the fabric. There are also known different methods for obtaining such an effect. U.S. Patent Application Publication No. 20080318485 discloses blending elastic (elastane) and low modulus (polyester) fibers and twisting them, possibly with cotton sliver, to provide an elastic yarn. is disclosed. See in particular paragraphs 24, 28 and 29 of US Patent Application Publication No. 20080318485 thereof. Further disclosure of how to combine elastic fibers with low modulus fibers can be found in US Patent Application Publication No. 20100281842, eg, paragraphs 22-25 and 35, where they are blended with elastic fibers. Low modulus fibers are called "control filaments". Applicant's WO2012/062480 discloses that a first and a second fiber are commingled together during the tensioning and relaxation steps (i.e. during the loading-unloading process), A method is disclosed for combining fibers so that they function as a single filament. The bonding methods disclosed in this WO2012/062480 are entangling , twisting with high twist/m and co-extrusion.

The fibers forming the core, i.e. the first fibers 4, the second fibers 5 and the third fibers 6, are bonded together, for example by twisting, entangling or co-extrusion, as already discussed. be. In some embodiments in which the fibers are intertwined, they are intertwined to varying degrees. Each fiber is bonded together to varying degrees and in many ways. In various embodiments, multiple conductive elastic fibers are coextruded with man-made fibers, entangled with man-made fibers, single-ply or two-ply twisted with man-made fibers, or air-jet textured with man-made fibers. (AJT).

FIG. 1b shows a first fiber 4, a second fiber 5 and a third fiber 6 entangled . As in the embodiment of FIG. 1a, only two types of fibers are required, two of the three fibers (5 and 6) are preferably side-by-side multicomponent fibers, e.g. T400 fibers is of the form Fiber entanglement (ie, fiber bundles) is performed according to various known and developing techniques in the art, such as open or closed entanglement jets. Confounding provides a number of bonding points within the range of about 50-200 points/m, or about 80-120 points/m, or in some embodiments about 95-105 points/m. Confounding is performed according to known or developing methods and according to the methods described in International Publication No. WO 2012/062480 of the present applicant. The entangled fibers are joined at a plurality of points P, and the entanglement is performed according to known techniques or according to the methods described below.

Load the T-400 yarn package onto a creel (not shown). Guide the T-400 thread to the feed roller and wrap 5 times around the roller. An elastomer, eg, elastane yarn package is mounted on draft rollers such that a draft is provided, and the elastane yarn is guided past the sensor and combined with the T-400 yarn at the feed rollers. The combined fibers are guided from feed rollers to an entangling air jet 18, for example a Sincro Jet entangling device (Fadis, Italy).

The entangled fibers are then guided to a lubrication station and finally a composite yarn package 206 (shown in FIGS. 5 and 6) after the entangled fibers are attached to the inventive apparatus of FIGS. ). The system is arranged to provide a large number of bond points (in the range of 50-200 points/m) to the entangled yarn, as described above.

In step 106, the conductive elastomeric fibers formed in step 104 are combined with second fibers to form the elastomeric conductive core 2, for example, by twisting, entangling , or coextrusion. According to embodiments in which the elastomeric conductive core comprises multiple fibers, these are combined in various ways, as described above. Step 106 also includes other materials (such as various common and other natural and man-made fibers, as described above) to form an insulating sheath that covers the elastomeric conductive core. To provide a ring spinning or core spinning of an elastic conductive core with. The elastic conductive core includes one or multiple core fibers, as described above. Various methods of forming yarns having stretchable cores comprising one or more fibers having elastic properties and covered by an insulating sheath are provided, for example, in the aforementioned US Patent Application Publication No. 20130260129. , shown in FIGS.

T-400 and elastane or other arrangement of the elastomeric conductive core 2 two tension bars 210 used to apply low pre-tension to the thread to align and straighten the conductive core 2 be guided between This is particularly useful in view of the nature of the elastomeric composite core "yarn" 2, when the composite yarn is obtained by entangling two fibers, namely T-400 and Elastane. From a pretension bar 210, the elastomeric conductive core yarn 2 is fed to two drive rollers 211 on which weights 212 are placed. An elastomeric conductive core 2 is guided between drive rollers and weights 212 to prevent movement of the core yarn with respect to rollers 211 . However, in other embodiments, instead of the roller 211 and weight 212 combination, other suitable means of imparting a controlled velocity to the elastomeric conductive core yarn 2, such as draft rollers known in the art. Such means can also be used.

Claims (27)

An elastic conductive yarn (1) comprising a core (2) having conductive and elastic properties and a non-conductive sheath (3) covering said core, said core (2) comprising: comprising first electrically conductive elastic fibers (4) and second low modulus fibers (5, 6), said first and second fibers being commingled and/or bonded together in a yarn core. and wherein said first and second fibers are entangled or twisted together or mechanically co-extruded in a yarn core (2) . 4. The core (2) comprises fibers (4) of an electrically conductive elastic material having dispersed electrically conductive particles, said elastic material being one of thermoplastic elastomers and thermoplastic polyurethanes. 2. The stretchable conductive yarn (1) according to 1. 3. Stretchable electrically conductive yarn (1) according to claim 1 or 2, wherein at least one of the first fibers (4) and the second fibers (5) comprises dispersed electrically conductive particles. Stretchable conductive yarn (1) according to any of the preceding claims, wherein the first fibers (4) comprise a thermoplastic polyurethane having a conductive coating and conductive particles. 5. Any one of claims 1 to 4, wherein the conductive particles comprise at least one of ZnS particles, metal nanoparticles, metal oxide nanoparticles, or carbon nanoparticles and are present in the range of 25 to 50% by weight. Stretchable conductive yarn (1) as described. The non-conductive sheath (3) is made of regenerated cellulose, hemp, flax, jute, kenaf, sisal, banana, agave, bamboo, poly(ethylene terephthalate), poly(butylene terephthalate), poly(vinylidene fluoride), polyamide 6, The elastic conductive yarn (1) according to any one of claims 1 to 5, comprising staple fibers selected from at least one of polyamide 66, polypropylene, polyethylene, poly(acrylonitrile), and poly(lactide). . Stretchable, electrically conductive yarn (1) according to any of the preceding claims, wherein the core (2) comprises one of the fibers (4, 5, 6) comprising an electrically conductive coating . A core (2) comprises first and second fibers (4, 5, 6), said first fibers (4) being elastomeric and said second fibers (5) being textured The elastic conductive yarn (1) according to any one of claims 1 to 7, which is a polyester copolymer. A fabric comprising a stretchable conductive yarn (1) according to any one of claims 1-8. A denim garment comprising the stretchable conductive yarn (1) according to any one of claims 1-8. A fabric (72) comprising a stretchable conductive portion (74) comprising stretchable conductive yarns according to any of claims 1 to 8, wherein said yarns are electrically conductive and elastic. and a non-conductive sheath (3) covering said core, said core comprising first conductive elastic fibers (4) and second low elasticity fibers (5) wherein said stretchable conductive portion (74) is shaped by a change in length or width of said stretchable conductive portion (74) due to stretching or bending of said stretchable conductive portion (74) of said fabric A fabric (72) characterized by having varying electrical properties. A core (2) comprises a plurality of said fibers (4, 5, 6) comprising a first fiber having a first elasticity and a second fiber having a second elasticity lower than said first elasticity. The fabric (72) of claim 11. 12. The fabric (72) of claim 11, wherein the first fibers (4) and the second fibers (5) are entangled or twisted together. 12. The fabric (72) of claim 11, wherein the first fibers (4) and the second fibers (5) are co-extruded. A fabric (72) according to any of claims 11 to 14, wherein the fabric is a denim fabric. A garment (70) comprising a fabric (72) according to any of claims 11-15. A fabric (72) according to any one of claims 11 to 15 comprising a stretchable conductive yarn (1) according to any one of claims 1 to 8, and a stretchable conductive portion of said fabric. (76) in combination with (74), wherein the processor is adapted to control the movement of the body of a user wearing the garment comprising the fabric by stretching or stretching the stretchable conductive portion; A system characterized by detecting changes in the length or width of a stretchable conductive portion (74) of said fabric as a function of bending. 18. The system of claim 17, wherein the fabric is part of a garment (eg jeans). 19. The system of claim 17 or 18, wherein the processor monitors the number of steps taken by the wearer or the speed at which the wearer walks or runs based on detected body movements. A method of forming a stretchable conductive yarn (1) according to any one of claims 1 to 8, the method comprising:
forming (100, 102) a solvent solution of the elastomeric material and the conductive material by adding the conductive material to the initial solution of the elastomeric material (wherein the elastomeric material comprises thermoplastic elastomers and thermoplastic polyurethanes); 1);
spinning or extruding (104) said elastomeric material of said solution (22) to form electrically conductive elastomeric fibers (4, 38, 54);
The electrically conductive elastomeric fibers (4, 38, 54) are commingled with at least a second low modulus fiber (4, 5) to make the at least two fibers (4, 5, 6) electrically conductive and Step (106) of forming an elastic core (2) (said blending said first conductive elastomeric fiber fibers (4, 38, 54) with at least second fibers (5, 6); Step (106) includes entangling or twisting said electrically conductive elastomeric fibers (4, 38, 54) with said second fibers (4, 5); Said step of blending (106) the elastomeric fiber fibers (4, 38, 54) with at least a second fiber (5, 6) comprises combining said fibers (4, 5, 6) with said fibers together coextrusion by passing through a compressed space); and
forming a yarn by combining said at least two fiber cores with at least one non-conductive material (3), wherein said non-conductive material surrounds said core to form a sheath.
A method comprising: 21. The method of claim 20, further comprising drawing the electrically conductive elastomeric fibers (38, 54) and the second fibers (5, 6) prior to the commingling (106). 21. The method of claim 20, further comprising forming a fabric (72) using yarn. The solvent is one of dimethylformamide, dimethylacetamide, and N-methyl-2-pyrrolidone, and forming a solution (100, 102) comprises preparing an initial solution (100) of the elastomeric material in said solvent. and the conductive material comprises at least one of Ag particles, metal oxide particles, metal nanoparticles, carbon nanoparticles, and ZnS particles. Further, the electrically conductive elastomeric fibers (38, 54) are drawn prior to the commingling (106) such that the electrically conductive elastomeric fibers (38, 54) are drawn during the commingling (106). said composite fiber (106) comprising co-extrusion for bonding said electrically conductive elastomeric fibers (38, 54) to at least other elastic fibers. Item 21. The method of Item 20. 25. A method according to claim 24, wherein at least one of the electrically conductive elastomeric fibers (38, 54) and the at least second low modulus fibers (5, 6) are provided with an adhesive thereon prior to commingling. the method of. 20. The spinning (104) forms a plurality of fine fibers (28), said fine fibers being combined prior to the combining (106) to form the electrically conductive elastomeric fibers (38, 54). or the method according to 21. Spinning comprises wet spinning through a solution (46) formed from a water-dimethylformamide mixture, a non-hydrolyzable siloxane-oxyalkylene block copolymer, and an emulsified mineral oil lubricant. 22. A method according to claim 20 or 21, comprising removing the solvent from the conductive elastomeric fibers (54) by treating the conductive fibers.