JP6930735B2 - Twisted yarn and fiber structure using it - Google Patents

Description

The present invention relates to a metal filament including twisted Riitooyobi fiber structure using the same.

In so-called wearable clothing, etc., which incorporates a device for measuring blood pressure, pulse, etc., conductivity is used to conduct a device for measuring blood pressure, pulse, etc. and a communication means for sending data extracted from this device to the outside. Threads or conductive materials are used. Patent Document 1 proposes carbon-based conductive yarns, metal or alloy plating yarns, conductive resin fiber yarns, metal fiber yarns, and the like as conductive yarns. Patent Document 2 proposes a nylon yarn kneaded with conductive carbon fine yarn. Patent Document 3 proposes a thread obtained by slitting a metal-deposited film in which a metal such as gold or silver is vapor-deposited on the surface of a polyester film. Patent Document 4 proposes a flexible electrode as an electrode used for wearable clothing.

Japanese Unexamined Patent Publication No. 2016-129115 JP-A-2017-201063 Japanese Unexamined Patent Publication No. 2009-044439 JP-A-2015-139506

However, the conventional conductive yarn has a problem that it is thick and hard, cannot be dyed, and easily collects sweat.

In order to solve the above-mentioned conventional problems, the present invention has a twist in which the fiber yarn itself has a soft texture equivalent to that of ordinary clothing fiber yarn, has good conductivity, is breathable, and can be washed at home. A yarn and a fiber structure using the same are provided.

Twisted yarn of the present invention is a yarn of at least two yarns of covering yarn with other yarns, at least one thread forming the twisted yarn is seen containing a metal filament and the organic fiber yarn, the metal filaments is disposed on the core, the organic fiber yarns are arranged in the sheath, a straight shape as a whole, the metal filaments is less diameter 22 .mu.m, covering yarn der conductive is, other yarns in organic fiber yarns characterized in that there.

The fiber structure of the present invention is characterized by containing the above-mentioned twisted yarn.

The covering yarn, the twisted yarn, and the fiber structure using the covering yarn of the present invention have a soft texture equivalent to that of a normal fiber yarn for clothing even though the fiber yarn itself is a metal wire by reducing the diameter of the metal filament. It is possible to provide a covering yarn and a twisted yarn which have good conductivity, breathability, and can be washed at home, and a fiber structure using the same. These properties are useful for so-called wearable clothing that can measure blood pressure, heart rate, body temperature, and the like. Further, the covering yarn and the twisted yarn of the present invention are also useful for fishing lines and the like because of their high strength.

FIG. 1A is a plan explanatory view of the single covering yarn according to the embodiment of the present invention, FIG. 1B is the same, a plan explanatory view of the double covering yarn, and FIG. It is a plane explanatory view which made it a single covering yarn. FIG. 2 is a plan explanatory view of the same design twisted yarn. FIG. 3 is a photograph showing a conductivity test of the yarn of Example 1 of the present invention. FIG. 4 is a photograph showing a conductivity test of the yarn of Example 2 of the present invention. FIG. 5 is a photograph showing a conductivity test of the yarn of Example 3 of the present invention. FIG. 6 is a photograph showing a conductivity test of the yarn of Example 4 of the present invention. FIG. 7 is a photograph showing a conductivity test of the yarn of Example 5 of the present invention. FIG. 8 is a photograph showing a conductivity test of the yarn of Example 6 of the present invention.

The present invention is a covering yarn containing a metal filament and an organic fiber yarn, in which the metal filament is arranged in a core and the organic fiber yarn is arranged in a sheath, and is straight as a whole. It is difficult to make fiber structures such as twisted yarns, woven fabrics, knitted fabrics, and braided yarns by using metal filaments alone, but when organic fiber yarns are wound, they can be supplied to twisted yarns, looms, knitting machines, and braided cord manufacturing equipment, and are sheet-like fibers. Structures can be manufactured. In the present invention, the organic fiber is, for example, a natural fiber such as cotton, hemp, wool, silk, a synthetic fiber such as polyester, nylon, acrylic, vinylon, polyolefin, para-aramid, meta-aramid, polyarylate, polybenzoxazole, etc. Contains recycled fibers such as rayon. When the water-soluble fiber thread is covered, the water-soluble fiber thread can be removed after forming the fiber structure, and the metal filament can be exposed to the outside to form an electric terminal. Useful for febrile clothing. It is also possible to make a fiber structure of a metal filament alone.

The metal filament is preferably at least one filament selected from tungsten (W), molybdenum (Mo) and stainless steel (SUS). Tungsten (W) is used in the light emitting parts of incandescent lamps and discharge lamps. The melting point is 3380 ° C., but the melting point of the filament is lower than this because it contains a small amount of dope. The melting point of molybdenum (Mo) is 1620 ° C. It is said that stainless steel (SUS) wire can be used in the annealing temperature range of 1150 ° C. or lower. For example, Nippon Seisen Co., Ltd. sells stainless steel wire having a diameter of 11 μm. The wire diameter of the metal filament is preferably 5 to 22 μm, more preferably 5 to 15 μm, and particularly preferably 8 to 12 μm. With the above diameter, it is difficult to feel a rough feeling even when touching the skin. Further, when the organic fiber yarn is covered and / or twisted, the metal filament is thin and difficult to see, which does not hinder the dyeability and color of the organic fiber yarn. The metal filament may be monofilament or multifilament, but monofilament is easier to handle. Filaments (long fiber yarns) can be used to conduct electrical conduction at any portion of the fiber structure, including both ends.

The water-soluble fiber yarn includes, for example, water-soluble vinylon, and can be dissolved in warm water or boiling water. The covering yarn in which the water-soluble fiber yarn is wound around the surface of the metal filament is straight as a whole. This is because the shape of the metal filament remains. The water-soluble vinylon may be a filament yarn or a spun yarn.

The covering yarn is preferably a single covering yarn or a double covering yarn. Of these, the single covering yarn is preferable because it is easy to manufacture and the cost is low. It is preferable that a water-soluble fiber yarn is further arranged as a companion yarn on the metal filament of the core yarn. When such a splicing thread is arranged, the integrity of the metal filament and the covering thread is improved.

The first twisted yarn of the present invention is a twisted yarn of at least two yarns, at least one yarn constituting the twisted yarn is the covering yarn described above, and the other yarn is an organic fiber yarn.

The second twisted yarn of the present invention is composed of a core yarn, a flower yarn and a pressing yarn, and the flower yarn is a twisted yarn having a loop or slack, and at least one yarn selected from the core yarn, the flower yarn and the pressing yarn. Is the covering yarn mentioned above, and is actually twisted as a whole. This plyed yarn is also called a design plyed yarn. As a result, the process passability of the loom, the knitting machine, and the non-woven fabric manufacturing apparatus can be improved. Since the filaments have loops or slack, a covering yarn containing a metal filament in the yarn can be used to expose the metal fibers to the outside after removing the water-soluble fiber yarns. The design twisted yarn is preferably composed of one core yarn, a plurality of flower yarns (preferably 2 to 6 yarns), and one pressing yarn. In order to improve the handleability of the design twisted yarn, it is preferable to apply actual twisting of about 100 to 1000 times / m as a whole.

The third twisted yarn of the present invention is a twisted yarn containing a metal filament and an organic fiber yarn, the metal filament is at least one filament selected from tungsten, molybdenum and stainless steel, and the organic fiber yarn is a synthetic fiber, natural. It is at least one fiber yarn selected from fibers and regenerated fibers, the metal filament has a diameter of 22 μm or less, and the twisted yarn is conductive. This twisted yarn does not require a water-soluble fiber yarn. For example, it can be composed of a two-component yarn of a tungsten filament and a cotton spun yarn. Since this twisted yarn does not use a water-soluble fiber yarn, the cost can be reduced, heat setting is possible, and workability is good when making a fiber structure such as a woven fabric, a knitted fabric, a braided yarn, or a sewing yarn. The twisted yarn and the obtained fiber structure also have a portion where the metal filament is exposed to the outside of the yarn, and this exposed portion can be used as an electrical terminal. Further, the twisted yarn and the obtained fiber structure are conductive and have heat generation by power supply. In this twisted yarn, an organic fiber yarn may be further arranged on the metal filament as a supplementary yarn. Further, this thread has high strength when combined with high-strength fibers such as high-strength polyethylene fiber and aramid fiber, and is also useful for fishing line and the like.

The fiber structure of the present invention is preferably at least one selected from woven fabrics, knitted fabrics, braids and sewing threads. In this way, it is useful for clothing, electrodes, conductive wires, heating wires, and the like. For example, in the case of wearable clothing, it may be used as a part of clothing, and may also be used as an electrode or a conductive wire. When it is a conductive wire, it may be used as it is, or it may be shielded or covered with an electric insulator so as not to leak electricity due to sweat or water. In addition, since it shields the pacemaker of the heart from electromagnetic waves, it can also be used as clothing for the part that protects the pacemaker.

The covering yarn and the twisted yarn of the present invention can be manufactured by using a twisting machine such as a ring twisting machine, a double twister, and a tri-twister. In particular, ring twisters and double twisters can be tensioned and can be mass-produced, which is preferable in terms of cost.

An example of the advantages of the present invention is as follows.
(1) Since it is a metal wire, it does not peel off and has excellent washability.
(2) It is less likely to wear than kneaded yarn made of conductive material such as carbon black.
(3) Since the metal wire is almost invisible, it does not interfere with the color of the thread that is composed together.
(4) Even if the metal wire is broken, it does not easily stick to the skin, and because of its thinness, it feels good on the skin.
(5) When combined with fibers that easily generate static electricity, static electricity can be removed. This is useful for static electricity removal clothes, work clothes, fire fighting clothes, acrylic sweaters and the like.
(6) Especially in the shape of the loop yarn, the electrode that comes into contact with the human body during exercise is less tightened and has good followability to the skin surface.
(7) It functions as a conductive wire or as a heating wire that has heat generation by power supply.
(8) Wearable clothing uses metal cords, metal plates, and metal snap buttons on the connection surface with the power supply and measuring equipment, but there are problems such as restrictions on the shape of the equipment to be connected and the connection surface being hard. However, when the covering yarn of the present invention, particularly the metal loop yarn in which the melted yarn is melted, is used, the connecting surface becomes like a conductive surface fastener, which is effective in solving the above problem.

Hereinafter, it will be described with reference to the drawings. In the drawings below, the same reference numerals indicate the same thing. FIG. 1A is a plan explanatory view of a single covering yarn 1 according to an embodiment of the present invention. The single covering yarn 1 is a yarn in which an organic fiber yarn or a water-soluble fiber yarn 3 is wound around the surface of a metal filament 2 of a core yarn. FIG. 1B is a plan explanatory view of the double covering yarn 4 of the same. The single covering yarn 4 is a yarn in which an organic fiber yarn or a water-soluble fiber yarn 3 is wound on the surface of a metal filament 2 of a core yarn, and a water-soluble fiber yarn 5 is wound around the surface in the direction opposite to that of the water-soluble fiber yarn 3. be. FIG. 1C is a plan explanatory view of the same, in which the splicing yarn 7 is arranged on the metal filament 2 of the core yarn to form a single covering yarn 6.

FIG. 2 is a plan explanatory view of the design twisted yarn 8. The design twisted yarn 8 is manufactured by using the single covering yarn or the double covering yarn described above, and the flower yarn 10 is slackly arranged on the surface of the core yarn 9 in a floating yarn state, and the pressing yarn 11 is slackened from above. It is fixed with. The design twisted yarn 8 is actually twisted about 100 to 1000 times / m as a whole.

Hereinafter, the present invention will be described in detail with reference to Examples. The present invention is not construed as being limited to the following examples.

(Example 1)
This example is an example of a two-component straight yarn of tungsten and cotton. Cotton has a metric count, and 80/1 indicates that one of the 80 count yarns is used (the same applies hereinafter).
<Composition>
Cotton 30/1 x 1 Cotton 80/1 x 1 Tungsten 11 μm x 1 <Plying method>
Covering twisted yarn (core yarn)
Cotton (cotton) 30/1 x 1 Tungsten 11 μm x 1 (pressing thread)
Cotton 80/1 x 1 (number of twists)
280 times / m (S twist)

(Example 2)
This example is an example of a three-component design twisted yarn of tungsten / cotton and polyester. Polyester D stands for denier (the same applies hereinafter).
<Composition, 3 straight threads of Example 1 are used for flower threads>
Polyester 150D x 2 cotton (cotton) 30/1 x 3 cotton (cotton) 80/1 x 3 tungsten 11 μm x 3 polyester 75D x 1 <Plying method>
Loop yarn (3.5 times more filament overfeed)
(Core thread)
Polyester 150D x 2 (flower thread)
Cotton 30/1 x 3 Cotton 80/1 x 3 Tungsten 11 μm x 3 (pressing thread)
Polyester 75D x 1 (number of twists)
600 times / m (S twist)

(Example 3)
This example is an example of a straight yarn having three components of tungsten, polyester, and melted yarn.
<Composition>
Polyester 150D x 1 Water-soluble vinylon 28D x 1 Tungsten 11 μm x 1 <Plying method>
Covering twisted yarn (core yarn)
Polyester 150D x 1 Tungsten 11 μm x 1 (pressing thread)
Water-soluble vinylon 28D x 1 (number of twists)
280 times / m (S twist)

(Example 4)
This example is an example of a design yarn having three components of tungsten, polyester, and melted yarn.
<Composition, 3 straight threads of Example 3 are used for flower threads>
Polyester 150D x 5 Water-soluble vinylon 28D x 3 Tungsten 11 μm x 3 Polyester 75D x 1 <Plying method>
Loop yarn (thread overfeed 3.26 times)
(Core thread)
Polyester 150D x 2 (flower thread)
Polyester 150D x 3 Tungsten 11 μm x 3 Water-soluble vinylon 28D x 3 (pressing thread)
Polyester 75D x 1 (number of twists)
600 times / m (S twist)

(Example 5)
This example is an example of a tungsten / dissolved yarn and a two-component straight yarn. In the evaluation test, all water-soluble vinylon was dissolved.
<Composition>
Water-soluble vinylon 100D x 1 Water-soluble vinylon 28D x 1 Tungsten 11 μm x 1 <Plying method>
Covering twisted yarn (core yarn)
Water-soluble vinylon 100D x 1 Tungsten 11 μm x 1 (pressing thread)
Water-soluble vinylon 28D x 1 (number of twists)
280 times / m (S twist)

(Example 6)
This example is an example of a tungsten / dissolved yarn and a two-component design yarn. In the evaluation test, all water-soluble vinylon was dissolved.
<Composition>
(Two of the above straight threads are used for the core thread)
(Use 5 of the above straight threads for flower threads)
(Use one of the above straight threads for the presser thread)
Water-soluble vinylon 100D x 8 Water-soluble vinylon 28D x 8 Tungsten 11 μm x 8 <Plying method>
Loop yarn (flower thread overfeed 2.8 times)
(Core thread)
Water-soluble vinylon 100D x 2 Water-soluble vinylon 28D x 2 Tungsten 11 μm x 2 (flower thread)
Water-soluble vinylon 100D x 5 Water-soluble vinylon 28D x 5 Tungsten 11 μm x 5 (pressing thread)
Water-soluble vinylon 100D x 1 Water-soluble vinylon 28D x 1 Tungsten 11 μm x 1 (number of twists)
600 times / m (S twist)

The conductivity test of the yarns obtained in Examples 1 to 6 above was carried out.
<LED lighting experiment>
(Experimental content)
A 10 cm test piece was energized to emit a red LED.
(Instrument used)
LED: Rated voltage 2V Rated current 20mA
Resistance: 6V resistance (180Ω)
Power supply: Two 1.5V alkaline batteries were connected in series.
As shown in Table 1, all were conductive. In addition, photographs showing the conductivity tests of Examples 1 to 6 are shown in FIGS. 3 to 8, respectively. The thread of FIG. 7 (Example 5) is thin and cannot be seen in the photograph, but it can be confirmed that the thread is continuous because the LED lamp is lit.

Next, the molten yarn is melted with a fiber yarn obtained by bundling four design twisted yarns of Example 2 (tungsten / cotton / polyester design twisted yarn) and a design twisted yarn of Example 6 (tungsten / polyester / molten yarn design twisted yarn). A heat generation experiment was conducted on a fiber yarn in which four fibers were bundled.
(Experimental content)
At an atmospheric temperature of 16 ° C., the temperature of a test piece having a current-carrying portion of 10 cm was measured.
(Instrument used)
Power supply: Two 1.5V alkaline batteries were connected in series.
Temperature measuring instrument: Non-contact thermometer HORIBA IT-540NH
As shown in Table 2, heat generation was observed in the energized portion.

Next, the electric resistance values of the design twisted yarns of Examples 2, 4 and 6 were measured.
(Experimental content)
Measure the electrical resistance value at the energized part 10 cm.
(Instrument used)
Measuring instrument: TRUSCO NAKAYAMA Digital Multitester TDE-200A

The fiber structure of the present invention is useful for clothing, electrodes, conductive wires, heating wires, and the like. For example, when making wearable clothing, it may be used as a part of clothing, or it can also be used as electrodes and conductive wires. When used as a heating wire, it can be applied to heating clothing by the power from the battery. In addition, since the pacemaker of the heart is shielded from electromagnetic waves, it can also be used as clothing for the part that protects the pacemaker. Furthermore, it is also useful for fishing lines and ropes.

1,6 Single covering yarn 2 Metal filament 3,5 Organic fiber yarn or water-soluble fiber yarn 4 Double covering yarn 7 Addition yarn 8 Design twisted yarn 9 Core yarn 10 Flower yarn 11 Pressing yarn

Claims (11)

A twisted yarn of at least two yarns, a covering yarn and another yarn.
At least one yarn constituting the twisted yarn includes a metal filament and an organic fiber yarn, the metal filament is arranged in a core, the organic fiber yarn is arranged in a sheath, and is straight as a whole, and the metal filament is formed. Is a conductive covering yarn with a diameter of 22 μm or less.
The other yarn is a twisted yarn characterized by being an organic fiber yarn. The twisted yarn according to claim 1, wherein the metal filament is a monofilament having a diameter of 15 μm or less. The twisted yarn according to claim 1 or 2, wherein the metal filament is at least one filament selected from tungsten, molybdenum, and stainless steel. The twisted yarn according to any one of claims 1 to 3, wherein the covering yarn is a single covering yarn or a double covering yarn. The twisted yarn according to any one of claims 1 to 4, wherein an organic fiber yarn is further arranged as a splicing yarn on the metal filament of the core of the covering yarn. It is composed of a core yarn, a flower yarn and a holding yarn, and the flower yarn is a twisted yarn having a loop or slack.
The twisted yarn according to any one of claims 1 to 5 is at least one yarn selected from the core yarn, the flower yarn and the pressing yarn.
A twisted yarn characterized by being actually twisted as a whole. The twisted yarn according to claim 6, wherein the core yarn is one, the flower yarn is a plurality, and the pressing yarn is one. The twisted yarn according to any one of claims 1 to 7, wherein the organic fiber yarn is at least one fiber yarn selected from synthetic fibers, natural fibers and regenerated fibers. The twisted yarn according to any one of claims 1 to 8, wherein the metal filament is exposed on the surface of the twisted yarn. A fiber structure containing the twisted yarn according to any one of claims 1 to 9. The fiber structure according to claim 10, wherein the fiber structure is at least one selected from a woven fabric, a knitted fabric, a braid, and a sewing thread.

Images