WO2019021984A1 - Fibres antibactériennes et produit textile antibactérien - Google Patents

Fibres antibactériennes et produit textile antibactérien Download PDF

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Publication number
WO2019021984A1
WO2019021984A1 PCT/JP2018/027435 JP2018027435W WO2019021984A1 WO 2019021984 A1 WO2019021984 A1 WO 2019021984A1 JP 2018027435 W JP2018027435 W JP 2018027435W WO 2019021984 A1 WO2019021984 A1 WO 2019021984A1
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Prior art keywords
fiber
antibacterial
antimicrobial
yarn
piezoelectric
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PCT/JP2018/027435
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English (en)
Japanese (ja)
Inventor
正道 安藤
聡 竹嶋
貴文 井上
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株式会社村田製作所
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Priority to JP2019532583A priority Critical patent/JP6784334B2/ja
Publication of WO2019021984A1 publication Critical patent/WO2019021984A1/fr

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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist

Definitions

  • One embodiment of the present invention relates to an antibacterial fiber and an antibacterial fiber product having antibacterial properties.
  • Patent No. 3281640 Japanese Patent Application Laid-Open No. 7-310284 Patent No. 3165992 Patent No. 1805853 Japanese Patent Application Laid-Open No. 8-226078 Unexamined-Japanese-Patent No. 9-194304 Japanese Patent Laid-Open No. 2004-300650
  • the material which has an antimicrobial property may produce the allergic reaction by a chemical
  • the object of the present invention is to provide an antimicrobial fiber and an antimicrobial fiber product having longer lasting effects than conventional materials having antimicrobial properties and having higher safety than drugs and the like.
  • the antimicrobial fiber product according to one embodiment of the present invention includes at least one swirling yarn twisted and twisted with a piezoelectric fiber made of a functional polymer that generates a charge by external energy. It is characterized in that the number of twists of the swirling yarn is within a predetermined range.
  • the antimicrobial fiber according to an embodiment of the present invention includes a plurality of charge generating fibers that generate charges by external energy, and therefore, a predetermined electric potential (including a ground potential) between fibers and the human body or the like An electric field is generated when in proximity to an object having.
  • the antimicrobial fiber of one embodiment of the present invention is close to an object having a predetermined potential (including a ground potential), such as between a fiber and a fiber, or a human body, through moisture such as sweat. , Pass the current.
  • the antimicrobial fiber product according to one embodiment of the present invention exerts an antimicrobial effect for the following reasons.
  • Cell membranes and bacteria of bacteria by direct action of an electric field or current generated when applied to an object (garments, footwear, or medical supplies such as a mask) used in proximity to an object having a predetermined potential such as the human body
  • an object garments, footwear, or medical supplies such as a mask
  • oxygen contained in water may be changed to reactive oxygen species by an electric field or current, or oxygen radicals may be generated in the cells of the bacteria by stress environment due to the presence of the electric field or current, Bacteria are killed or weakened by the action of reactive oxygen species including radicals.
  • the above-mentioned reasons may be combined to produce an antimicrobial effect.
  • the "antibacterial” said by one Embodiment of this invention is the concept containing both the effect which suppresses generation
  • the charge generation fiber that generates a charge by external energy may be, for example, a fiber using a substance having a photoelectric effect, a substance having a pyroelectric effect, or a piezoelectric material.
  • a configuration in which a conductor is used for the core yarn, an insulator is wound around the conductor, and a voltage is applied to the conductor to generate a charge is also a charge generation fiber.
  • an antimicrobial fiber and an antimicrobial fiber product having a longer lasting effect than conventional materials having antimicrobial properties, and having higher safety than drugs and the like.
  • FIG. 1 (A) is a view showing the structure of the antibacterial fiber 31
  • FIG. 1 (B) is a cross-sectional view taken along the line AA of FIG. 1 (A)
  • FIG. 1 (C) is an antibacterial fiber
  • FIG. 1 (D) is a cross-sectional view taken along the line BB in FIG. 1 (C).
  • FIGS. 2A and 2B are diagrams showing the relationship between the uniaxial stretching direction of polylactic acid, the electric field direction, and the deformation of the piezoelectric fiber 100.
  • FIG. FIG. 3A to FIG. 3C are schematic views showing the relationship between the number of twists in the antibacterial fiber 33 and the number of twists.
  • FIG. 4 (A) illustrates the shear stress (shear stress) generated in each piezoelectric fiber when tension is applied to the antibacterial fiber 31, and FIG. 4 (B) illustrates when tension is applied to the antibacterial fiber 32. It illustrates the shear stress (shear stress) generated in each piezoelectric fiber.
  • FIG. 5 (A) is a cross section of the antibacterial fiber 34, and FIG. 5 (B) schematically shows a state before and after applying a tension to the antibacterial fiber 34.
  • FIG. 6 (A) is a diagram showing an electric potential in the antimicrobial fiber 31 and the antimicrobial fiber 32
  • FIG. 6 (B) is a diagram showing an electric field.
  • FIG. 7 (A) is a partially enlarged view of the structure of the antimicrobial fiber product 101 according to the first embodiment
  • FIG. 7 (B) is a partially enlarged schematic view for illustrating the same.
  • FIG. 8 is a graph showing the relationship between the number of times of twisting of the twisted yarn and the antibacterial activity value.
  • FIG. 9 is a partially enlarged schematic view for explaining the structure of the antibacterial fiber product 102 according to the modification.
  • FIG. 1 (A) is a view showing the structure of the antibacterial fiber 31
  • FIG. 1 (B) is a cross-sectional view taken along the line AA of FIG. 1 (A)
  • FIG. 1 (C) is an antibacterial fiber
  • FIG. 1 (D) is a cross-sectional view taken along the line BB in FIG. 1 (C).
  • the antimicrobial fiber which seven piezoelectric fibers 100 are twisted is shown as an example in FIG. 1 (A)-FIG. 1 (D)
  • the number of piezoelectric fibers 100 is not restricted to this, Actually Is appropriately set in view of the application and the like.
  • the antibacterial fiber product will be described.
  • the piezoelectric fiber 100 is an example of a charge generation fiber (charge generation yarn) that generates a charge by external energy.
  • the piezoelectric fiber 100 is made of a functional polymer, for example, a piezoelectric polymer.
  • a piezoelectric polymer poly lactic acid (PLA) is mentioned, for example.
  • polylactic acid (PLA) is a non-pyroelectric piezoelectric polymer.
  • Polylactic acid is uniaxially stretched to generate piezoelectricity.
  • the polylactic acid includes PLLA in which L monomer is polymerized and PDLA in which D monomer is polymerized.
  • the piezoelectric fiber 100 may further include ones other than the functional polymer as long as the function of the functional polymer is not inhibited.
  • Polylactic acid is a chiral polymer, and the main chain has a helical structure. Polylactic acid develops piezoelectricity when uniaxially stretched and molecules are oriented. When the degree of crystallization is further increased by heat treatment, the piezoelectric constant is increased.
  • the piezoelectric fiber 100 made of uniaxially stretched polylactic acid is defined as the first axis in the thickness direction, the third axis as the stretching direction 900, and the second axis in the direction orthogonal to both the first axis and the third axis, It has tensor components of d 14 and d 25 as piezoelectric distortion constants. Therefore, polylactic acid most efficiently generates charge when strain occurs in the direction of 45 degrees with respect to the uniaxially stretched direction.
  • FIGS. 2A and 2B are diagrams showing the relationship between the uniaxial stretching direction of polylactic acid, the electric field direction, and the deformation of the piezoelectric fiber 100.
  • FIG. 2A the piezoelectric fiber 100 shrinks in the direction of the first diagonal 910A, and extends in the direction of the second diagonal 910B orthogonal to the first diagonal 910A. It generates an electric field. That is, the piezoelectric fiber 100 generates a negative charge on the front side of the sheet.
  • the piezoelectric fiber 100 extends in the direction of the first diagonal 910A and contracts in the direction of the second diagonal 910B as shown in FIG. 2B, charges are generated but the polarity is reversed and the surface of the paper surface An electric field is generated in the direction from the That is, the piezoelectric fiber 100 generates positive charge on the front side of the sheet.
  • Polylactic acid does not need to be subjected to poling treatment like other piezoelectric polymers such as PVDF or piezoelectric ceramics, because the piezoelectricity is generated in orientation processing of molecules by stretching.
  • the piezoelectric constant of uniaxially stretched polylactic acid is about 5 to 30 pC / N, and has a very high piezoelectric constant among polymers. Furthermore, the piezoelectric constant of polylactic acid does not change with time and is extremely stable.
  • the piezoelectric fiber 100 is a fiber having a circular cross section.
  • a method of extruding and forming a piezoelectric polymer for fiberization a method of melt-spinning a piezoelectric polymer for fiberization (for example, a spinning / drawing method in which a spinning process and a drawing process are performed separately) Direct stretching method in which spinning process and stretching process are connected, POY-DTY method capable of simultaneously performing false twisting process, or super high speed prevention method for speeding up), piezoelectric polymer in dry or wet process Spinning (for example, phase separation or dry-wet spinning in which a polymer serving as a raw material is dissolved in a solvent and extruded from a nozzle to form fibers, gel spinning in which fibers are uniformly fiberized while containing a solvent;
  • it is manufactured by a method of forming fibers by a liquid crystal spinning method or the like including a liquid crystal spinning method of forming fibers by using a liquid crystal solution or a melt
  • the antibacterial fiber 31 and the antibacterial fiber 32 constitute such a yarn (multifilament yarn) formed by twisting a plurality of the piezoelectric fibers 100 of PLLA.
  • the antibacterial fiber 31 is a right-turning yarn (hereinafter, referred to as S yarn) twisted by turning the piezoelectric fiber 100 to the right.
  • the antibacterial fiber 32 is a left-turning yarn (hereinafter referred to as Z-line) twisted by turning the piezoelectric fiber 100 to the left.
  • the stretching direction 900 of each piezoelectric fiber 100 coincides with the axial direction of each piezoelectric fiber 100.
  • the stretching direction 900 of the piezoelectric fiber 100 is inclined to the left with respect to the axial direction of the antimicrobial fiber 31.
  • the stretching direction 900 of the piezoelectric fiber 100 is inclined to the right with respect to the axial direction of the antibacterial fiber 32.
  • the angle of inclination of the drawing direction 900 with respect to the axial direction of the antimicrobial fiber 31 or the antimicrobial fiber 32 depends on the number of twists of the antimicrobial fiber 31 or the antimicrobial fiber 32.
  • FIG. 3A to FIG. 3C are schematic views showing the relationship between the number of twists in the antibacterial fiber 33 and the number of twists.
  • the number of twists represents how many turns per meter of yarn, and the unit is represented by T / m.
  • the antimicrobial fiber 33 the antimicrobial fiber in which 24 piezoelectric fibers 100 are twisted is mentioned as an example.
  • the angle of the piezoelectric fiber 100 at the outer peripheral portion of the antibacterial fiber 33 with respect to the axial direction of the antibacterial fiber 33 is approximately 13 degrees.
  • the antibacterial fiber 33 can adjust the angle of inclination of the piezoelectric fiber 100 at the outer peripheral portion of the antibacterial fiber 33 with respect to the axial direction of the antibacterial fiber 33 by adjusting the number of twists.
  • FIG. 4 (A) illustrates the shear stress (shear stress) generated in each piezoelectric fiber when tension is applied to the antibacterial fiber 31, and FIG. 4 (B) illustrates when tension is applied to the antibacterial fiber 32. It illustrates the shear stress (shear stress) generated in each piezoelectric fiber.
  • FIG. 4 (A) when tension is applied to the antibacterial fiber 31 of the S yarn, the surface of the antibacterial fiber 31 is in the state as shown in FIG. 2 (A). Therefore, a negative charge is generated on the surface of the antimicrobial fiber 31, and a positive charge is generated on the inner side.
  • FIG. 4B when tension is applied to the antibacterial fiber 32 of the Z yarn, the surface of the antibacterial fiber 32 is in the state as shown in FIG. 2B. As a result, a positive charge is generated on the surface of the antimicrobial fiber 32, and a negative charge is generated on the inside.
  • the antimicrobial fiber 31 and the antimicrobial fiber 32 generate an electric field by the potential difference generated by this charge. This electric field also leaks to the nearby space and forms a coupled electric field with the other parts. Further, the potentials generated in the antimicrobial fiber 31 and the antimicrobial fiber 32 are the antimicrobial fiber 31 and the antimicrobial fiber 32 in the case of proximity to an object having a predetermined potential such as a human body having a predetermined potential (including a ground potential). An electric field is generated between the
  • bacteria and fungi can be suppressed by an electric field (see, for example, Tetsuaki Tudo, Hiroki Korei, Hideaki Matsuoka, Koichi Koizumi, Kodansha: Microbiology-Science and Engineering. Also, for example, Koichi Takagi, Application of high voltage plasma technology to agriculture and food fields, see J. HTSJ, Vol. 51, No. 216). Further, due to the potential generating the electric field, a current may flow through a current path formed of moisture or the like or a circuit formed by a local micro discharge phenomenon or the like. It is conceivable that the current weakens the bacteria and suppresses the growth of the bacteria.
  • bacteria referred to in the present embodiment include bacteria, fungi, or microorganisms such as ticks and fleas.
  • the antibacterial fiber 31 exerts the antibacterial effect directly by the electric field formed in the vicinity of the antibacterial fiber 31, or by the electric field generated when it approaches an object having a predetermined potential such as a human body.
  • the antimicrobial fiber 31 causes an electric current to flow when it approaches an object having a predetermined potential, such as a nearby other fiber or a human body, through moisture such as sweat. Also by this current, an antimicrobial effect may be exhibited directly.
  • reactive oxygen species in which oxygen contained in water is changed by the action of current or voltage, radical species produced by interaction or catalysis with additives contained in the fiber, or other antibacterial chemical species (amine Depending on the derivative etc.) the antibacterial effect may be exhibited indirectly.
  • oxygen radicals may be generated in the cells of bacteria due to a stress environment due to the presence of an electric field or current, whereby the antibacterial fiber 31 may indirectly exert an antibacterial effect.
  • the antimicrobial fiber 32 can also exhibit an antimicrobial effect directly or indirectly like the antimicrobial fiber 31.
  • the radical generation of superoxide anion radical (active oxygen) or hydroxy radical is considered.
  • the "antibacterial" said by this embodiment is the concept containing both the effect which suppresses generation
  • FIG. 5 (A) is a cross section of the multifilament antibacterial fiber 34
  • FIG. 5 (B) schematically shows a state before and after applying tension to the antibacterial fiber 34.
  • FIG. 5 (A) and 5 (B) show, as an example, an antibacterial fiber 34 in which nineteen piezoelectric fibers 100 (filaments 1 to 19) are twisted. For convenience of explanation, this will be defined as an inner layer centering on the filament 1, filaments 2 to 7 surrounding it will be defined as a middle layer, and further filaments 8 to 19 outside will be defined as an outer layer.
  • the middle layer (filaments 2 to 7) is wound around the inner layer (filament 1).
  • the outer layer (filaments 8 to 19) is wound around the middle layer (filaments 2 to 7).
  • the filament of any layer is demonstrated on the assumption that it does not move to another layer.
  • the filaments 1 to 7 inside the antibacterial fiber 34 have a shallow angle with respect to the axis of the antibacterial fiber 34 as compared with the filaments 8 to 19 on the outer peripheral portion. Therefore, the middle layer (filaments 2 to 7) needs to be longer than the inner layer (filament 1), and the outer layer (filaments 8 to 19) needs to be longer than the middle layer (filaments 2 to 7).
  • the filaments of the inner layer, the middle layer, and the outer layer constitute the antibacterial fiber 34 while sequentially replacing their positions.
  • the internal shallow filaments 1 to 7 are first tensioned.
  • the filaments 8 to 19 on the outer peripheral part are slightly spaced apart. For example, as shown in filaments A to D in FIG. 5B, gaps are formed between the filaments.
  • the filaments 8 to 19 in the outer peripheral portion do not receive a large shear stress (shear stress).
  • the tension applied to the antibacterial fiber 34 increases, and when the predetermined tension is exceeded, the shear stress on the filaments 8 to 19 in the outer peripheral portion gradually increases. Such a phenomenon is more remarkable as the number of times of twisting of the yarn is larger. Therefore, when the number of twists is too large, the shear stress on the filaments 8 to 19 in the outer peripheral portion is small and the voltage by the piezoelectric is small if the predetermined tension is not exceeded.
  • FIGS. 4A and 4B when PLLA is used as the antimicrobial fiber 31 and the antimicrobial fiber 32, the shear piezoelectricity of PLLA is 45 degrees with respect to the uniaxially stretched direction. The largest voltage is generated when shear stress is applied.
  • the antibacterial fiber 34 has a low efficiency for generating piezoelectricity even if the number of twists is too large or too small. From this, it is an important factor in efficiently generating piezoelectricity that the number of twists in the antibacterial fiber 34 is in a predetermined range.
  • FIG. 6 (A) is a diagram showing an electric potential in the antimicrobial fiber 31 and the antimicrobial fiber 32
  • FIG. 6 (B) is a diagram showing an electric field.
  • the antimicrobial fiber in which seven piezoelectric fibers 100 are twisted is shown as an example.
  • the surface of the antibacterial fiber 31 alone has a negative potential and the inside has a positive potential when tension is applied.
  • the antimicrobial fiber 32 alone, when tension is applied, the surface is at a positive potential and the inside is at a negative potential.
  • the antibacterial fiber 31 which is S yarn and the antibacterial fiber 32 which is Z yarn are brought close to each other, an electric field can be generated between the antibacterial fiber 31 and the antibacterial fiber 32.
  • the central portion of the Z yarn has a negative potential
  • the central portion of the S yarn has a positive potential so that adjacent portions (surfaces) have the same potential.
  • the proximity portion between the antimicrobial fiber 31 and the antimicrobial fiber 32 becomes 0 V
  • the positive potential inside the antimicrobial fiber 31 becomes higher so as to maintain the original potential difference.
  • the negative potential inside the antimicrobial fiber 32 is further lowered.
  • an electric field mainly from the center to the outside is formed, and in the cross section of the antimicrobial fiber 32, an electric field mainly from the outside to the center is formed.
  • these electric fields leak and couple to the air, and an electric field circuit is formed between the antimicrobial fiber 31 and the antimicrobial fiber 32. That is, the potential difference at various places is defined by an electric field coupling circuit formed by intertwining fibers in a complex manner, or a circuit formed by a current path accidentally formed in the yarn by moisture or the like.
  • the potential is the highest at the center of the antibacterial fiber 31, and the potential is the lowest at the center of the antibacterial fiber 32.
  • the electric field formed between the antibacterial fiber 31 and the antibacterial fiber 32 is maximum in the space where the antibacterial fiber 31 and the antibacterial fiber 32 are in proximity as shown in FIG. 6 (B).
  • FIG. 7 (A) is a partially enlarged view of the structure of the antimicrobial fiber product 101 according to the first embodiment
  • FIG. 7 (B) is a partially enlarged schematic view for illustrating the same.
  • the antimicrobial fiber product 101 comprises an antimicrobial fiber 31 and an antimicrobial fiber 32.
  • the antibacterial fiber product 101 is a knitted fabric knitted using the antibacterial fiber 31 and the antibacterial fiber 32 as a knitting yarn.
  • the yarn constituting the antimicrobial fiber product 101 may be provided with a yarn other than the S yarn that generates a negative charge on the surface and a Z yarn that generates a positive charge on the surface.
  • a yarn other than the S yarn that generates a negative charge on the surface and a Z yarn that generates a positive charge on the surface By adjusting the use amount of the Z yarn and the S yarn, it is possible to adjust the ratio of the polarity of the generated charge and the like according to the application. In addition, even when the Z yarn or the S yarn is used alone, the antibacterial property is exhibited.
  • the yarn constituting the charge generating portion may be provided with a yarn (cotton yarn or the like) which does not generate an electric charge other than the Z yarn and the S yarn.
  • the piezoelectric yarn is not as soft as cotton yarn etc., so when worn by the user, the skin may be stimulated. For this reason, by using in part the thread (cotton thread etc.) which does not generate electric charge to antimicrobial textiles 101, the
  • the antimicrobial fiber product 101 as described above is applicable to various types of clothing or products such as medical members.
  • the antibacterial fiber product 101 is an underwear (especially socks), a towel, an insole such as shoes and boots, sportswear in general, a hat, bedding (including a futon, mattress, sheets, pillow, pillow cover, etc.), toothbrush, floss , Various filters (filters of water purifier, air conditioner or air purifier, etc.), stuffed animals, pet related products (mats for pets, pet clothes, pet clothes inners), various mats (feet, hands, toilet seat etc.) ), Screen doors, curtains, kitchenware (sponge or cloth, etc.), sheets (seats of cars, trains, airplanes, etc.), cushioning materials and exterior materials of motorcycle helmets, sofas, bandages, gauze, masks, sutures, doctors And patient's clothes, supporters, sanitary goods, sporting goods (wear and gloves innerwear, or gowns used in martial arts, etc.), or packaging materials, etc. It is possible to apply.
  • the antimicrobial fiber product 101 generates electric charge with high frequency.
  • socks absorb moisture such as sweat and become a hotbed for bacterial growth, but the antibacterial fiber product 101 can suppress bacterial growth, so it is remarkably effective as a fungus control use for deodorization.
  • the antimicrobial fiber product 101 can also be used as a method for controlling bacteria on the surface of animals except humans, and is disposed so that a cloth containing a piezoelectric body is opposed to at least a part of the skin of the animal.
  • the charges generated when an external force is applied to the piezoelectric body may suppress the growth of bacteria on the body surface of the animal facing the cloth. This makes it possible to suppress the growth of bacteria on the surface of the animal body and to treat Trichophyton on the body surface of the animal in a simple manner, which is more safe than the use of drugs and the like.
  • WO 2015/159832 discloses a transducer that is made into a knitted fabric or a woven fabric using a plurality of piezoelectric yarns and conductive yarns and that a displacement is added to this. In this case, all the conductive yarns are connected to the detection circuit, and there is always a pair of conductive yarns for one piezoelectric yarn.
  • WO2015 / 159832 when a charge is generated in the piezoelectric yarn, electrons move in the conductive yarn to immediately neutralize the charge generated in the piezoelectric yarn.
  • a detection circuit captures the current due to the movement of electrons and outputs it as a signal.
  • Examples 1 to 6 and Comparative Example 1 will be described below.
  • the relationship between the number of twists and the antimicrobial activity value was examined using the antimicrobial fiber 31 and the antimicrobial fiber 32 of the above-described embodiment.
  • FIG. 8 is a graph showing the relationship between the number of times of twisting of the antibacterial fiber 31 and the antibacterial fiber 32 in the antibacterial fiber product 101 and the antibacterial activity value.
  • the antimicrobial fiber 31 and the antimicrobial fiber 32 used as Examples 1 to 6 and Comparative Example 1 are 84 dtex-24 filaments.
  • Example 1 the antibacterial fiber 31 and the antibacterial fiber 32 having a twisting frequency of 300 T / m were used.
  • the number of twists used the antimicrobial fiber 31 and the antimicrobial fiber 32 of 500 T / m.
  • Example 3 the antibacterial fiber 31 and the antibacterial fiber 32 having a twist number of 700 T / m were used.
  • the number of twists used the antimicrobial fiber 31 and the antimicrobial fiber 32 of 1000 T / m.
  • Example 5 the number of twists used the antimicrobial fiber 31 and the antimicrobial fiber 32 of 2000 T / m.
  • Example 6 the number of twists used the antimicrobial fiber 31 and the antimicrobial fiber 32 of 3000 T / m.
  • Comparative Example 1 the antibacterial fiber 31 and the antibacterial fiber 32 having a twisting frequency of 100 T / m were used.
  • Example 1 when the number of twists in Example 1 was 300 T / m, the antibacterial activity was 2.3 to 5.2.
  • the antibacterial activity was 5.71 to 5.75.
  • the antibacterial activity When the number of twists of Example 3 was 700 T / m, the antibacterial activity was 4.5.
  • the antibacterial activity was 4.1 to 4.4.
  • the antibacterial activity When the number of twists in Example 5 was 2000 T / m, the antibacterial activity was 4.0.
  • the number of twists of Example 6 was 3000 T / m, the antibacterial activity was 3.9.
  • Twisted yarns generally have a sweet-twisted yarn of 500 T / m or less, a medium-twisted yarn of greater than 500 T / m and 1000 T / m, a strong-twisted yarn of more than 1000 T / m and a maximum of 2500 T / m, and a very strong yarn of 2500 T / m. It is said that it is m or more.
  • Sweet twist yarn has a soft texture and is easy to contain air, so it is excellent in moisture retention and heat retention. Moreover, since the time which manufacture requires can be shortened, so that there are few twisting times, cost can be held down low. From the data obtained in FIG.
  • the antibacterial activity value is 2.2 or more. From this, by using the antibacterial fiber 31 and the antibacterial fiber 32 of 300 T / m to 1000 T / m, the antibacterial fiber product 101 having good texture, low cost and antibacterial property can be obtained. In addition, it was confirmed that by using the antibacterial fiber 31 and the antibacterial fiber 32 of 500 T / m to 1000 T / m, the antibacterial activity value has sufficient antibacterial activity larger than 4.0.
  • FIG. 9 is a partially enlarged schematic view for explaining the structure of the antibacterial fiber product 102 according to the modification.
  • the same components as those of the embodiment are denoted by the same reference numerals and the description thereof will be omitted.
  • the antimicrobial fiber product 102 includes the antimicrobial fiber 31 and the antimicrobial fiber 32 in the same manner as the antimicrobial fiber product 101.
  • the woven fabric is formed with the antibacterial fiber 31 and the antibacterial fiber 32 as the warp and the normal yarn 20 as the weft.
  • the antimicrobial fiber 31 which is an S yarn and the antimicrobial fiber 32 which is a Z yarn are arranged side by side in parallel.
  • the fabric may be formed with the antibacterial fiber 31 and the antibacterial fiber 32 as wefts, with the normal yarn 20 as the warp.
  • the normal yarn 20 for example, cotton or hemp is adopted.
  • the antibacterial fiber 31 and the antibacterial fiber 32 are woven as warps and the normal yarn 20 is woven as wefts.
  • the antimicrobial fiber product 102 when the antimicrobial fiber product 102 is longitudinally stretched, it is possible to efficiently generate a charge.
  • Both the warp and the weft may be composed of the antibacterial fiber 31 and the antibacterial fiber 32.
  • charges can be generated efficiently even when stretched in either the longitudinal or transverse direction.
  • it is preferable that the antimicrobial fiber 31 and the antimicrobial fiber 32 are alternately arrange
  • the antibacterial fiber 31 When an external force is applied to the antibacterial fiber product 102, the antibacterial fiber 31 generates a negative charge, and the antibacterial fiber 32 generates a positive charge. Thereby, a large potential difference can be generated between the antibacterial fiber 31 and the antibacterial fiber 32 adjacent to each other.
  • an example of plain weave is shown as the antimicrobial fiber product 102, but the shape of the weave is not limited to this.
  • a non-woven fabric can also be adopted.
  • the antimicrobial fiber product 102 is not limited to a cloth, and may be one in which the antimicrobial fiber 31 or the antimicrobial fiber 32 is not intertwined.
  • the antibacterial fiber product of this embodiment has the following applications other than a microbe-control application.
  • Bioactive Piezoelectric Fiber Product There are many types of tissue that constitute a living body having piezoelectricity.
  • collagen that constitutes the human body is a type of protein, and is abundantly contained in blood vessels, dermis, ligaments, health, bones, cartilage, and the like.
  • Collagen is a piezoelectric body, and tissue in which collagen is oriented may exhibit very large piezoelectricity.
  • Many reports have already been made on the piezoelectricity of bones (see, for example, Eiichi Fukada, Piezoelectricity of biopolymers, Polymer Vol. 16 (1967) No. 9 p795-800, etc.).
  • the antimicrobial fiber 31 or the antimicrobial fiber product including the antimicrobial fiber 32 when the antimicrobial fiber 31 or the antimicrobial fiber product including the antimicrobial fiber 32 generates an electric field and the electric field is alternating or the strength of the electric field is changed, the piezoelectric body of the living body vibrates by the inverse piezoelectric effect.
  • a minute vibration is applied to a part of the living body, for example, a capillary or a dermis by the change in the alternating electric field or the electric field strength generated by the antibacterial fiber 31 and / or the antibacterial fiber 32, thereby promoting the improvement of the blood flow in that part. it can. This may accelerate the healing of skin diseases and wounds.
  • the antimicrobial fiber product 101 functions as a bio-active piezoelectric fiber product.
  • the antimicrobial fiber 31 generates a negative charge when an external force is applied.
  • the antimicrobial fiber 32 produces a positive charge when an external force is applied. Therefore, the antibacterial fiber 31 has a property of adsorbing a substance having positive charge (for example, particles such as pollen), and the antibacterial fiber 32 adsorbs a substance having negative charge (for example, harmful substance such as yellow sand) Do. Therefore, the antimicrobial fiber product 101 provided with the antimicrobial fiber 31 and the antimicrobial fiber 32 can adsorb fine particles such as pollen and yellow sand when applied to a medical product such as a mask.
  • a structure in which a conductor is used for the core yarn, an insulator is wound around the conductor, and electricity is supplied to the conductor to generate an electric charge is also a fiber that generates an electric charge.
  • the piezoelectric body since the piezoelectric body generates an electric field by means of piezoelectricity, no power source is required and there is no risk of electric shock.
  • the life of the piezoelectric body lasts longer than the antibacterial effect of a drug or the like. Also, there is less risk of allergic reactions than drugs.
  • expression of resistant bacteria by drugs, in particular antibiotics, etc. has become a serious problem in recent years, it is not possible to cause resistant bacteria in terms of mechanism in the sterilization method according to one embodiment of the present invention.
  • a Z yarn using PDLA is also conceivable as a fiber generating a negative charge on the surface.
  • S yarn using PDLA is also conceivable as a fiber which produces a positive charge on the surface.
  • Antibacterial fiber (right turning yarn: S yarn) 32 ... Antibacterial fiber (left turning yarn: Z yarn) 34: Antibacterial fiber 100: Piezoelectric fiber 101, 102: Antibacterial fiber product

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  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

La présente invention est caractérisée en ce qu'elle est pourvue d'au moins un fil tourné (31, 32) torsadé par rotation de fibres piézoélectriques (100) comprenant un polymère fonctionnel qui génère des charges électriques par une énergie en provenance de l'extérieur, le nombre de fois où le fil tourné (31, 32) est torsadé se situant dans une plage prescrite.
PCT/JP2018/027435 2017-07-28 2018-07-23 Fibres antibactériennes et produit textile antibactérien WO2019021984A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2020241432A1 (ja) * 2019-05-28 2021-10-21 帝人フロンティア株式会社 糸および布
FR3112270A1 (fr) * 2020-07-10 2022-01-14 Wuhan Junxu Industrial Co., Ltd. Masque ayant des fonctions antibacteriennes et antivirales et son procédé de fabrication

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000144545A (ja) * 1998-08-31 2000-05-26 Gunze Ltd 圧電材およびその製造法
JP2000234235A (ja) * 1999-02-10 2000-08-29 Toray Ind Inc 撚物布帛
JP2006348392A (ja) * 2005-06-13 2006-12-28 Unitica Fibers Ltd ポリ乳酸系織物

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4099282B2 (ja) * 1999-02-23 2008-06-11 ユニチカ株式会社 抗菌性成形品
JP2011256476A (ja) * 2010-06-08 2011-12-22 Teijin Ltd ポリ乳酸繊維構造体および繊維製品
JP2015198154A (ja) * 2014-04-01 2015-11-09 帝人株式会社 圧電素子

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000144545A (ja) * 1998-08-31 2000-05-26 Gunze Ltd 圧電材およびその製造法
JP2000234235A (ja) * 1999-02-10 2000-08-29 Toray Ind Inc 撚物布帛
JP2006348392A (ja) * 2005-06-13 2006-12-28 Unitica Fibers Ltd ポリ乳酸系織物

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2020241432A1 (ja) * 2019-05-28 2021-10-21 帝人フロンティア株式会社 糸および布
CN113891963A (zh) * 2019-05-28 2022-01-04 帝人富瑞特株式会社 纱线及布
EP3960919A4 (fr) * 2019-05-28 2022-12-28 Teijin Frontier Co., Ltd. Fil et tissu
FR3112270A1 (fr) * 2020-07-10 2022-01-14 Wuhan Junxu Industrial Co., Ltd. Masque ayant des fonctions antibacteriennes et antivirales et son procédé de fabrication

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