WO2019239867A1 - 圧電性繊維複合体、及び圧電性衣料 - Google Patents
圧電性繊維複合体、及び圧電性衣料 Download PDFInfo
- Publication number
- WO2019239867A1 WO2019239867A1 PCT/JP2019/020849 JP2019020849W WO2019239867A1 WO 2019239867 A1 WO2019239867 A1 WO 2019239867A1 JP 2019020849 W JP2019020849 W JP 2019020849W WO 2019239867 A1 WO2019239867 A1 WO 2019239867A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piezoelectric fiber
- piezoelectric
- fiber assembly
- base material
- fiber composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/702—Piezoelectric or electrostrictive devices based on piezoelectric or electrostrictive fibres
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
- A41B11/00—Hosiery; Panti-hose
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/30—Antimicrobial, e.g. antibacterial
- A41D31/305—Antimicrobial, e.g. antibacterial using layered materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/025—Electric or magnetic properties
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
- D03D1/0088—Fabrics having an electronic function
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/30—Piezoelectric or electrostrictive devices with mechanical input and electrical output, e.g. functioning as generators or sensors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/85—Piezoelectric or electrostrictive active materials
- H10N30/857—Macromolecular compositions
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/13—Physical properties anti-allergenic or anti-bacterial
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/16—Physical properties antistatic; conductive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/42—Piezoelectric device making
Definitions
- the present invention relates to a piezoelectric fiber composite that exhibits antibacterial properties and piezoelectric clothing.
- Patent Document 1 a piezoelectric fabric formed by a yarn including a piezoelectric base material has been proposed.
- the piezoelectric fabric described in Patent Document 1 is a fabric in which a piezoelectric effect is expressed by an external stimulus (for example, physical force).
- an external stimulus for example, physical force
- Patent Document 2 a cloth that exhibits antibacterial properties by external energy has been proposed.
- an object of one embodiment of the present invention is to provide a piezoelectric fiber composite that exhibits antibacterial properties with small energy.
- a piezoelectric fiber composite according to an embodiment of the present invention is composed of a base material portion and a piezoelectric fiber that generates a charge by energy from the outside, and a piezoelectric fiber assembly having a different expansion ratio from the base material portion, A joining portion that joins the base material portion and the piezoelectric fiber assembly.
- a piezoelectric fiber composite includes a base material portion, a piezoelectric fiber assembly including a piezoelectric fiber that generates a charge by external energy, the base material portion, and the piezoelectric fiber assembly. And a plurality of joints for joining together.
- the piezoelectric fiber assembly is extensible between at least two of the joints in use.
- the piezoelectric fiber composite When receiving energy from the outside, the piezoelectric fiber composite according to an embodiment of the present invention generates an electric field between at least two piezoelectric fibers that have different potentials when a charge is generated, or a predetermined potential of a human body or the like. When close to an object having a ground potential (including ground potential), an electric field is generated between the piezoelectric fiber and the object having the predetermined potential.
- the piezoelectric fiber composite when receiving energy from the outside, causes a current to flow between moisture or the like between at least two piezoelectric fibers that have different potentials when charges are generated, Alternatively, when close to an object having a predetermined potential (including a ground potential) such as a human body, an electric current is passed between the piezoelectric fiber and the object having the predetermined potential via moisture such as sweat.
- a predetermined potential including a ground potential
- the piezoelectric fiber composite of one embodiment of the present invention exhibits antibacterial properties for the following reasons.
- a piezoelectric fiber composite is an electric field generated when applied to an object (such as clothing, a medical product such as a mask, or a filter used in an electrical product) used in the vicinity of an object having a predetermined potential such as a human body.
- the direct action of electric current produces an effect that the cell membrane of the fungus and the electron transfer system for sustaining the life of the fungus are disturbed, and the fungus is killed or the fungus is weakened.
- oxygen contained in moisture may be changed to active oxygen species by an electric field or current.
- oxygen radicals may be generated in the bacterial cells due to a stress environment due to the presence of an electric field or current.
- bacteria are killed or weakened by the action of reactive oxygen species containing these radicals.
- the above-mentioned reasons may be combined to exhibit an antibacterial effect.
- the “antibacterial” referred to in the present invention is a concept including both an effect of weakening bacteria and an effect of killing bacteria.
- the piezoelectric fiber assembly is bonded to the base material portion in a state where the piezoelectric fiber assembly is stretched beyond its natural length or natural length. For this reason, even when a small load is applied to the piezoelectric fiber composite, the load is efficiently transmitted to the piezoelectric fiber assembly, so that antibacterial properties can be expressed with a small amount of energy.
- a piezoelectric fiber composite that exhibits antibacterial properties with small energy can be realized.
- FIG. 1 is a configuration diagram illustrating an example of a configuration of a piezoelectric fiber composite.
- FIG. 2A is a schematic diagram showing an example of a piezoelectric fiber assembly (a state in which the piezoelectric fiber is not stretched), and FIG. 2B is another example of the piezoelectric fiber assembly (a piezoelectric fiber is stretched).
- FIG. 3A is a partially exploded view showing an example of the configuration of the piezoelectric fiber
- FIG. 3B is a cross-sectional view taken along the line AA in FIG. 3A
- FIG. 3D is a partially exploded view showing another example of the configuration of the piezoelectric fiber
- FIG. 3D is a cross-sectional view taken along the line BB in FIG. 3C.
- FIG. 3A is a partially exploded view showing an example of the configuration of the piezoelectric fiber assembly (a state in which the piezoelectric fiber is not stretched)
- FIG. 2B is another example of the piezoelectric fiber assembly (a
- FIG. 4 (A) is a diagram illustrating an example of the relationship between the uniaxial stretching direction of polylactic acid, the electric field direction, and the deformation of the piezoelectric fiber
- FIG. 4 (B) is a uniaxial stretching direction of polylactic acid; It is a figure which shows another example of the relationship between an electric field direction and a deformation
- FIG. 5A is a diagram illustrating an example of shear stress (shear stress) generated in each filament when tension is applied to the piezoelectric fiber
- FIG. 5B is a diagram illustrating each filament when tension is applied to the piezoelectric fiber. It is a figure which shows another example of the shear stress (shear stress) which arises in a.
- FIG. 6 is a diagram illustrating an example of an electric field in the piezoelectric fiber assembly.
- FIG. 7 is an explanatory diagram showing an example of a change in stress over time in a state where a load is applied to the piezoelectric fiber assembly.
- FIG. 8 is a schematic view showing a sock to which the piezoelectric fiber composite is applied.
- FIG. 9 is a configuration diagram illustrating an example of the piezoelectric fiber composite according to the first modification.
- FIG. 10 is a schematic diagram showing a sanitary article to which the piezoelectric fiber composite according to the first modification is applied.
- FIG. 11 is a configuration diagram illustrating an example of a piezoelectric fiber composite according to Modification 2.
- FIG. 12 is a configuration diagram illustrating an example of a piezoelectric fiber composite according to Modification 3.
- FIG. 1 is a configuration diagram illustrating an example of a piezoelectric fiber composite 1.
- the piezoelectric fiber composite 1 includes a base material portion 2, a piezoelectric fiber assembly 3, and a plurality (two in FIG. 1) of joint portions 4.
- the piezoelectric fiber composite 1 has, for example, a two-layer structure in which the piezoelectric fiber assembly 3 is disposed on the main surface (one surface) of the base material portion 2.
- the base material portion 2 is, for example, a fabric (for example, a knitted fabric, a woven fabric, or a non-woven fabric) composed of fibers (filaments).
- the expansion / contraction rate of the base material portion 2 is lower than the expansion / contraction rate of the piezoelectric fiber assembly 3.
- the base material portion 2 is less likely to expand (deform) than the piezoelectric fiber assembly 3 even when external energy (for example, tension P1) is applied. Since the base material portion 2 is less likely to expand and contract, the piezoelectric fiber composite 1 can reduce damage such as tearing due to external energy being applied.
- the piezoelectric fiber composite 1 can be applied to thin materials such as clothing and cover sheets.
- the base material part 2 may be comprised with the fiber (filament) formed with the raw material with a low expansion-contraction rate. Moreover, the base material part 2 may be formed so that an expansion / contraction rate may become low with the structure, such as a nonwoven fabric. Moreover, the base material part 2 may be formed of a monofilament or a multifilament. Furthermore, the base material part 2 is not limited to the example of the fabric comprised by the fiber, Resin and metal formed in paper or a sheet form may be sufficient. Moreover, the base material part 2 is not limited to sheet shape like a fabric, You may form in shapes other than a sheet shape, for example, a thick plate shape. Moreover, the base material part 2 may be formed in strip shape or frame shape, for example.
- the plurality of joints 4 join the base member 2 and the piezoelectric fiber assembly 3 together.
- the plurality of joining portions 4 join (fix) the piezoelectric fiber assembly 3 to the base material portion 2 by sewing or the like.
- the plurality of joining portions 4 join the piezoelectric fiber assembly 3 to the base material portion 2 at both ends in one direction (extension direction) E1 of the piezoelectric fiber assembly 3.
- the plurality of joint portions 4 are preferably arranged so as to face each other in the extending direction E1 of the piezoelectric fiber assembly 3.
- FIG. 2A is a schematic diagram showing an example of the piezoelectric fiber assembly 3 according to the present embodiment (a state in which the piezoelectric fiber 31 and the piezoelectric fiber 32 are not stretched).
- FIG. 2B is a schematic diagram illustrating another example of the piezoelectric fiber assembly 3 (a state in which the piezoelectric fiber 31 and the piezoelectric fiber 32 are stretched).
- FIG. 3A is a partially exploded view showing an example of the configuration of the piezoelectric fiber 31 constituting the piezoelectric fiber assembly 3.
- FIG. 3B is a cross-sectional view taken along line AA in FIG.
- FIG. 3C is a partially exploded view showing an example of the configuration of the piezoelectric fiber 32.
- FIG. 3D is a cross-sectional view taken along line BB in FIG.
- the piezoelectric fiber assembly 3 is stretchable, and expands and contracts (stretches) between the joint portions 4 facing each other in the stretch direction E1 among the plurality of joint portions 4.
- the piezoelectric fiber assembly 3 includes a piezoelectric fiber 31 and a piezoelectric fiber 32, as shown in FIGS. 2 (A) and 2 (B).
- the piezoelectric fiber assembly 3 is a knitted fabric knitted using the piezoelectric fibers 31 and the piezoelectric fibers 32 as knitting yarns.
- the piezoelectric fiber assembly 3 expands and contracts by external energy. For example, when the tension P1 is applied, the piezoelectric fiber assembly 3 expands from the state shown in FIG. 2 (A) to the state shown in FIG. 2 (B).
- the piezoelectric fiber assembly 3 is configured to easily extend in the extension direction E1 when the tension P1 is applied.
- each of the piezoelectric fiber 31 and the piezoelectric fiber 32 includes a plurality of filaments 300 having piezoelectricity (FIG. 3).
- FIG. 3 A
- FIG. 3 (B), FIG. 3 (C) and FIG. 3 (D) form a twisted yarn (multifilament yarn).
- the piezoelectric fiber 31 is a right turning yarn (hereinafter referred to as S yarn) twisted by turning the filament 300 to the right.
- the piezoelectric fiber 32 is a left-handed yarn (hereinafter referred to as a Z yarn) twisted by turning the filament 300 to the left.
- the piezoelectric fiber 31 and the piezoelectric fiber 32 have shown the piezoelectric fiber aggregate
- the filament 300 is a fiber having a circular cross section as shown in FIGS. 3 (B) and 3 (D).
- the filament 300 is a charge generation fiber (charge generation yarn) that generates charges when external energy is applied. For example, when the tension P1 is applied to the piezoelectric fiber 31 or the piezoelectric fiber 32, the filament 300 generates an electric charge.
- the filament 300 is made of a functional polymer (for example, a piezoelectric polymer).
- An example of the piezoelectric polymer is polylactic acid (PLA).
- Polylactic acid (PLA) is a piezoelectric polymer that does not have pyroelectricity. Polylactic acid has piezoelectricity by being uniaxially stretched.
- Polylactic acid includes PLLA in which an L monomer is polymerized and PDLA in which a D monomer is polymerized.
- the filament 300 may further contain a material other than the functional polymer as long as it does not inhibit the function of the functional polymer. Further, the filament 300 is not limited to a circular cross section.
- Polylactic acid is a chiral polymer, and the main chain has a helical structure.
- Polylactic acid has piezoelectricity when uniaxially stretched and its molecules are oriented. If the crystallinity is increased by further applying heat treatment, the piezoelectric constant increases. Since polylactic acid has piezoelectricity due to molecular orientation by stretching, it is not necessary to perform poling treatment unlike other piezoelectric polymers or piezoelectric ceramics such as PVDF (polyvinylidene fluoride).
- 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 vary with time and is extremely stable.
- FIG. 4A is a diagram illustrating an example of the relationship between the uniaxial stretching direction 900 of the L-form polylactic acid (PLLA), the electric field direction, and the deformation of the filament 300.
- FIG. 4B is a diagram showing another example of the relationship between the uniaxial stretching direction 900 of the L-form polylactic acid, the electric field direction, and the deformation of the filament 300.
- 4A and 4B are diagrams when the filament 300 is assumed to be a film shape as a model case.
- the filament 300 made of uniaxially stretched polylactic acid defines the thickness direction as the first axis, the uniaxial stretch direction 900 as the third axis, and the direction perpendicular to both the first axis and the third axis as the second axis, having a tensor components of d 14 and d 25 as the piezoelectric strain constant. Therefore, the filament 300 made of uniaxially stretched polylactic acid generates charges most efficiently when strain occurs in a direction of 45 degrees with respect to the uniaxial stretch direction 900.
- the filament 300 When the filament 300 is PLLA and contracts in the direction of the first diagonal line 910A and extends in the direction of the second diagonal line 910B orthogonal to the first diagonal line 910A as shown in FIG. An electric field is generated in the direction facing That is, the filament 300 generates a negative charge on the front side of the sheet.
- FIG. 4B when the filament 300 extends in the direction of the first diagonal line 910A and contracts in the direction of the second diagonal line 910B, charge is generated, but the polarity is reversed, and the surface of the paper surface An electric field is generated in the direction facing the back side. That is, the filament 300 generates a positive charge on the front side of the sheet.
- the uniaxial stretching direction 900 of the filament 300 is coincident with or parallel to the axial direction of the filament 300. As shown in FIG. 3A, the uniaxial stretching direction 900 of the filament 300 in the piezoelectric fiber 31 is inclined to the left on the paper surface with respect to the axial direction 30A of the piezoelectric fiber 31. In addition, the uniaxial stretching direction 900 of the filament 300 in the piezoelectric fiber 32 is inclined to the right on the paper surface with respect to the axial direction 30B of the piezoelectric fiber 32 as shown in FIG.
- the inclination of the uniaxial stretching direction 900 of the filament 300 with respect to the axial directions 30A and 30B of the piezoelectric fiber 31 and the piezoelectric fiber 32 depends on the number of twists of the piezoelectric fiber 31 or the piezoelectric fiber 32. That is, the inclination of the uniaxial stretching direction 900 with respect to the respective axial directions of the piezoelectric fiber 31 and the piezoelectric fiber 32 is not limited to the angle shown in FIGS. 3 (A) and 3 (C).
- the inclination of the uniaxial stretching direction 900 with respect to the axial direction 30 ⁇ / b> A of the piezoelectric fiber 31 only needs to intersect at least the axial direction 30 ⁇ / b> A of the piezoelectric fiber 31.
- the inclination of the uniaxial stretching direction 900 with respect to the axial direction 30B of the piezoelectric fiber 32 only needs to intersect at least the axial direction 30B of the piezoelectric fiber 32.
- FIG. 5 (A) is a diagram showing shear stress (shear stress) S1 generated in each filament 300 when tension P1 is applied to the piezoelectric fiber 31.
- FIG. FIG. 5B is a diagram showing a shear stress (shear stress) S ⁇ b> 1 generated in each filament 300 when a tension P ⁇ b> 1 is applied to the piezoelectric fiber 32.
- the tension P1 shown in FIG. 5A is a force that pulls the piezoelectric fiber 31 toward the axial direction 30A of the piezoelectric fiber 31 and the opposite direction.
- the tension P1 shown in FIG. 5B is a force that pulls the piezoelectric fiber 32 in the axial direction 30B of the piezoelectric fiber 32 and in the opposite direction.
- the angle A1 is an angle of distortion generated with respect to the uniaxial stretching direction 900 of each filament 300 when the tension P1 is applied to the piezoelectric fiber 31.
- the angle A ⁇ b> 2 is an angle of strain generated with respect to the uniaxial stretching direction 900 of each filament 300 when the tension P ⁇ b> 1 is applied to the piezoelectric fiber 32.
- the direction corresponding to the second diagonal line 910B is a direction parallel to the direction in which the tension P1 is applied.
- the shear stress S1 is a force that works in a direction parallel to the tension P1.
- each filament 300 when the tension P1 is applied to the piezoelectric fiber assembly 3, in the piezoelectric fiber 31 and the piezoelectric fiber 32, each filament 300 generates an electric charge due to shear stress, and an electric field is generated.
- FIG. 6 is a diagram illustrating an example of an electric field in the piezoelectric fiber 31 and the piezoelectric fiber 32.
- the arrows shown in FIG. 6 indicate the direction of the electric field.
- the piezoelectric fiber assembly 3 is a knitted fabric using the piezoelectric fiber 31 and the piezoelectric fiber 32 formed of the piezoelectric filament 300 as a knitting yarn, the piezoelectric fiber assembly 3 is piezoelectric compared to the case where the piezoelectric fiber 31 or the piezoelectric fiber 32 is used alone. A larger electric field can be generated between the fiber 31 and the piezoelectric fiber 32.
- the growth of bacteria and fungi can be suppressed by an electric field. Further, a current may flow through a current path formed by moisture or the like, or a circuit formed by a micro discharge phenomenon or the like, due to a potential generating this electric field. It is considered that this current weakens the bacteria and suppresses the growth of the bacteria.
- the bacterium referred to in the present embodiment includes bacteria, fungi, archaea, or microorganisms such as mites and fleas.
- an electric field is generated in the piezoelectric fiber assembly 3 when the piezoelectric fiber 31 and the piezoelectric fiber 32 are extended by external energy (tension P1). That is, the piezoelectric fiber assembly 3 composed of the piezoelectric fibers 31 and the piezoelectric fibers 32 exhibits antibacterial properties by expanding and contracting with external energy.
- the piezoelectric fiber assembly 3 is fixed to the base material part 2 by at least two joining parts 4. Then, as shown in FIG. 2B, the piezoelectric fiber assembly 3 maintains a state of being stretched in the stretching direction E1 by the tension P2. While the piezoelectric fiber assembly 3 maintains the stretched state by the tension P2 (hereinafter simply referred to as the stretched state), the piezoelectric fiber 31 and the piezoelectric fiber 32 expand and contract by a small external energy.
- the piezoelectric fiber assembly 3 is in a state of being stretched with a tension P2 of 0.5 N or more, for example. That is, it is assumed that the piezoelectric fiber assembly 3 is bonded to the base member 2 in a state where a desired external energy (for example, load (tension) P2) is applied as shown in FIG.
- the piezoelectric fiber assembly 3 is stretched by the tension P2 and further pulled by the tension P1 to increase the elongation, so that the piezoelectric fiber 31 and the piezoelectric fiber 32 are further stretched in the stretching direction E1.
- the piezoelectric fiber assembly 3 may be joined to the base material part 2 so that tension
- the piezoelectric fiber 31 and the piezoelectric fiber 32 expand and contract with a small external energy compared to the state where the piezoelectric fiber 31 and the piezoelectric fiber 32 are not stretched by the tension P2.
- the piezoelectric fiber composite 1 the piezoelectric fiber 31 and the piezoelectric fiber 32 expand and contract with a small external energy in a state where the piezoelectric fiber assembly 3 is expanded.
- the piezoelectric fiber composite 1 has antibacterial properties when the piezoelectric fiber assembly 3 is stretched, and the piezoelectric fiber 31 and the piezoelectric fiber 32 generate an electric charge by stretching with a small external energy, and an electric field is generated.
- the piezoelectric fiber assembly 3 is stretched by a tension P2 of 0.5 N or more.
- the piezoelectric garments to which the piezoelectric fiber composite 1 is applied exhibit antibacterial properties with energy such as minute movements of the wearer.
- the piezoelectric fiber composite 1 is applied to a mask, when the wearer wears the piezoelectric mask, the piezoelectric fiber assembly 3 is stretched by a tension P2 of 0.5 N or more.
- the piezoelectric mask expands and contracts with small energy due to the wearer's breathing and the like. Piezoelectric masks generate electric charges by stretching with a small amount of energy generated by the wearer's breathing and the like, and exhibit antibacterial properties by generating an electric field.
- FIG. 7 is an explanatory diagram showing an example of a change in stress with the lapse of time by fixing both ends of the piezoelectric fiber assembly 3 in the extension direction with a predetermined load applied for 18 hours.
- the vertical axis of the graph in FIG. 7 is stress (unit is MPa), and the horizontal axis is elapsed time (unit is time).
- the piezoelectric fiber assembly 3 generates stress against the load when a load is applied.
- the stress generated in the piezoelectric fiber assembly 3 gradually decreases with time.
- the stress applied to the piezoelectric fiber assembly 3 gradually increases and decreases while gradually decreasing.
- the piezoelectric fiber assembly 3 when the piezoelectric fiber assembly 3 is stretched, the piezoelectric fiber 31 and the piezoelectric fiber 32 repeat microscopic expansion and contraction as shown by the change in stress. Thus, since the piezoelectric fiber assembly 3 expands and contracts in the stretched state, the piezoelectric fiber assembly 3 generates an electric field in the piezoelectric fiber assembly 3 and exhibits antibacterial properties.
- the “antibacterial” referred to in the present embodiment is a concept including both an effect of weakening bacteria and an effect of killing bacteria.
- the piezoelectric fiber assembly 3 in an expanded state generates an electric field due to a small deformation of the piezoelectric fiber assembly 3 due to a minute movement of the wearer. Further, the piezoelectric fiber assembly 3 generates an electric field in a stretched state by applying a small external force energy in the environment at the time of use due to, for example, vibration. As described above, the piezoelectric fiber composite 1 exhibits antibacterial properties with small energy in the stretched state.
- the piezoelectric fiber assembly 3 is not stretched when the user (wearer) is not using (wearing), and is fixed to the base material portion 2 by the joint portion 4 so as to stretch during use (wearing). May be. Thereby, since the piezoelectric fiber composite body 1 expand
- the piezoelectric fiber assembly 3 may be fixed to the base material part 2 by the joint part 4 in an expanded state. That is, the piezoelectric fiber assembly 3 may be fixed to the base material portion 2 by the joint portion 4 in a state where the piezoelectric fiber assembly 3 is previously stretched from the natural length. Thereby, the user can use the piezoelectric clothing, the piezoelectric sheet, or the piezoelectric filter to which the piezoelectric fiber composite 1 is applied without worrying about the external energy in use, for example, the tension.
- the natural length of the piezoelectric fiber assembly 3 is a length in a state where no load is applied to the piezoelectric fiber assembly 3.
- the piezoelectric fiber 31 and the piezoelectric fiber 32 cause an electric current to flow through moisture such as sweat when approaching an object having a predetermined potential such as a human body, the antibacterial effect may be directly exhibited. Furthermore, radical species in which oxygen contained in moisture is changed by the action of electric current and voltage, radical species generated by interaction with and additives in fibers, and other antibacterial chemical species (amine derivatives, etc.) ) May indirectly exert antibacterial effects. As the radical species, generation of a superoxide anion radical (active oxygen) or a hydroxy radical can be considered.
- the piezoelectric fiber 31 and the piezoelectric fiber 32 generate an electric field due to a potential difference caused by the generated charges. This electric field leaks to the nearby space and forms a combined electric field with other parts.
- the potential generated in the piezoelectric fiber 31 and the piezoelectric fiber 32 is close to an object having a predetermined potential that is close, for example, a predetermined potential (including a ground potential) such as a human body. An electric field is generated between the object and the object.
- FIG. 8 is a schematic diagram showing a sock 5 to which the piezoelectric fiber composite 1 is applied.
- the sock 5 is a piezoelectric garment in which the piezoelectric fiber composite 1 is applied to the heel portion 50 as shown in FIG.
- the heel portion 50 of the sock 5 is formed such that the piezoelectric fiber assembly 3 is on the wearer's body side and the base material portion 2 is on the outside. That is, the piezoelectric fiber composite 1 applied to the heel portion 50 of the sock 5 has a two-layer structure including the inner piezoelectric fiber assembly 3 and the outer base material portion 2. It is assumed that a portion (non-piezoelectric portion) 51 other than the heel of the sock 5 is formed of the same material as the base material portion 2.
- the piezoelectric fiber assembly 3 is fixed to the base member 2 by sewing or the like at both ends in the front-rear direction.
- the piezoelectric fiber assembly 3 is joined to the base member 2 so that when the wearer wears the socks 5, the piezoelectric fiber assembly 3 is stretched in the stretching direction E1 by a desired tension (for example, 0.5 N or more).
- the piezoelectric fiber assembly 3 generates an electric field in response to a minute movement of the wearer's heel in a state of being stretched by a desired tension.
- the sock 5 which applied the piezoelectric fiber composite 1 to the heel part 50 expresses antibacterial property by small external energy.
- the base material portion 2 is a fabric that is hard to stretch (deform) and is sturdy. In this case, the presence of the base material portion 2 in the heel portion 50 of the sock 5 can further reduce damage due to rubbing or the like as compared to the case where the heel portion 50 does not have the base material portion 2.
- the sock 5 exhibits antibacterial properties with small external energy while reducing damage to the heel portion 50.
- the material of the non-piezoelectric portion 51 may be a material different from that of the base material portion 2. Moreover, the non-piezoelectric part 51 and the base material part 2 may be integrally formed.
- the piezoelectric fiber composite 1 can be applied to various clothing, medical members, electrical products, and the like.
- the piezoelectric fiber composite 1 includes socks, underwear, gauze, masks, sanitary goods (sanitary shorts, disposable paper diapers, cloth diapers, diaper covers, etc.), various filters (filters for water purifiers, air conditioners or air purifiers, etc.) ), Seats (seats for cars, trains, airplanes, etc.), and the like.
- FIG. 9 is a configuration diagram illustrating an example of the piezoelectric fiber composite 1A according to the first modification.
- the piezoelectric fiber composite 1 ⁇ / b> A is different from the above-described piezoelectric fiber composite 1 in that it includes an extension region 301 and a normal region 302.
- the extension region 301 is, for example, a region that is extended by a desired load (for example, a tension P2 of 0.5 N) when the wearer wears (in use).
- the normal region 302 is a region other than the stretch region 301 and is a region that expands and contracts depending on the movement of the wearer's body or the shape of the body.
- the joining portion 4 joins the piezoelectric fiber assembly 3 to the base material portion 2 by stitching or the like at both ends of the stretching region 301 in the stretching direction E1.
- FIG. 10 is a schematic diagram showing a sanitary article (sanitary shorts) 6 to which the piezoelectric fiber composite 1A according to the first modification is applied.
- the piezoelectric fiber assembly 3 includes an extension region 301 and a normal region 302.
- the extension region 301 is disposed in the lower part of the sanitary shorts 6.
- the joining portion 4 joins the piezoelectric fiber assembly 3 to the base material portion 2 at both ends in the front-rear direction of the extension region 301. That is, the extension region 301 extends in the front-rear direction between the two joints 4 in the front-rear direction while the wearer wears the region.
- the normal region 302 expands and contracts appropriately according to the wearer's movement and the like.
- the stretched region 301 is stretched while the wearer wears the sanitary shorts 6, so that the electric field is generated by a small external energy compared to the normal region 302.
- the normal region 302 expands and contracts according to the movement of the wearer's body to generate an electric field and develop antibacterial properties.
- the extension region 301 expands and contracts with a small amount of external energy that is not noticed by the wearer, so that an electric field is generated and exhibits antibacterial properties.
- the piezoelectric fiber composite body 1A according to the modified example 1 exhibits the antibacterial effect more effectively because the piezoelectric fiber assembly 3 includes the stretch region 301 and the normal region 302.
- FIG. 11 is a configuration diagram illustrating an example of the piezoelectric fiber composite 1B according to the second modification.
- the piezoelectric fiber composite 1 ⁇ / b> B according to Modification 2 has the above-described piezoelectric fiber composite in which a plurality of joint portions 4 are arranged in the form of dots in the plane direction of the extension region 301. 1 and the piezoelectric fiber composite 1A.
- the plurality of joint portions 4 may be arranged on one to a plurality of straight lines.
- the some junction part 4 may be arrange
- the piezoelectric fiber composite 1B according to Modification 2 has the plurality of joints 4, small external energy is easily transmitted to the piezoelectric fiber 31 and the piezoelectric fiber 32.
- the piezoelectric fiber composite 1 ⁇ / b> B according to the modified example 2 has a plurality of joints 4, and exhibits antibacterial properties by expansion and contraction by a small external energy in a state where the piezoelectric fiber assembly 3 is stretched between the joints 4. To do.
- FIG. 12 is a configuration diagram illustrating an example of the piezoelectric fiber composite 1 ⁇ / b> C according to the third modification.
- one joint 4 is arranged so as to surround the piezoelectric fiber assembly 3 with two pairs of portions 41 and 42 facing each other, as shown in FIG. Is different from the above-described piezoelectric fiber composite 1, piezoelectric fiber composite 1A, and piezoelectric fiber composite 1B.
- the piezoelectric fiber 31 and the piezoelectric fiber 32 include Small external energy is easily transmitted.
- the periphery of the piezoelectric fiber assembly 3 is fixed, for example, in a state where the piezoelectric fiber assembly 3 extends between a pair of facing portions 41, Antibacterial properties are manifested by expansion and contraction with small external energy.
- the piezoelectric fiber assembly 3 may include yarns other than the S yarn that generates a negative charge on the surface and the Z yarn that generates a positive charge on the surface. By adjusting the usage amount of the Z yarn and the S yarn, the proportion of the polarity of the charge generated according to the application can be adjusted. Further, the piezoelectric fiber 31 may include a yarn (such as cotton yarn) that does not generate electric charge other than the Z yarn and the S yarn. Usually, piezoelectric yarns have a poor touch compared to cotton yarns and the like, so that the skin may be stimulated when worn by the wearer.
- the touch of the piezoelectric fiber assembly 3 is improved, and the piezoelectric fiber composites 1, 1A, 1B, and 1C are , Relieve irritation to the skin.
- the piezoelectric fiber composites 1, 1A, 1B, and 1C may be used alone with Z yarn or S yarn. Even when the Z yarn or S yarn is used alone, the piezoelectric fiber composites 1, 1A, 1B and 1C exhibit antibacterial properties.
- the joint 4 may be U-shaped.
- the piezoelectric fiber composites 1, 1A, 1B, and 1C can also be used as a method for suppressing bacteria on the body surface of animals other than humans.
- Piezoelectric fiber composites 1, 1 ⁇ / b> A, 1 ⁇ / b> B are arranged on at least a part of the skin of an animal so that the piezoelectric fiber aggregates 3 face each other and electric charges generated when an external force is applied to the piezoelectric fiber aggregates 3.
- 1C can suppress the growth of bacteria on the surface of the animal body.
- the filament 300 may be formed by, for example, a method in which a piezoelectric polymer is extruded to form a fiber, a method in which a piezoelectric polymer is melt-spun and converted into a fiber (for example, spinning / stretching performed separately in a spinning process and a stretching process).
- Wet spinning for example, a phase separation method or dry-wet spinning method in which a polymer as a raw material is dissolved in a solvent and extruded from a nozzle to make a fiber, or a gel spinning method in which a fiber is uniformly made into a fiber while containing a solvent.
- a liquid crystal spinning method in which a fiber is formed using a liquid crystal solution or a melt
- a method in which a piezoelectric polymer is fiberized by electrostatic spinning.
- the bonding portion 4 may bond the piezoelectric fiber assembly 3 to the base material portion 2 using an adhesive or the like. Furthermore, the joining part 4 may join the piezoelectric fiber assembly 3 to the base material part 2 by thermocompression bonding.
- the piezoelectric fiber 31 or the piezoelectric fiber 32 is not limited to a knitted fabric using the filament 300, and may be a woven fabric or a nonwoven fabric using the filament 300.
- the piezoelectric fiber 31 or the piezoelectric fiber 32 may be a yarn using PDLA.
- the positive and negative charges generated on the surfaces of the piezoelectric fiber 31 and the piezoelectric fiber 32 are different from those when using a yarn using PLLA.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Woven Fabrics (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
2…基材部
3…圧電繊維集合体
4…接合部
5…靴下(圧電性衣料)
6…サニタリーショーツ(サニタリー用品)
30A、30B…軸方向
31、32…圧電繊維
41、42…部分
50…かかと部分
51…非圧電部分
300…フィラメント
301…伸張領域
302…通常領域
900…一軸延伸方向
910A…第1対角線
910B…第2対角線
A1、A2…角度
E1…一方向(伸張方向)
P1、P2…張力(外部エネルギー)
S1…応力
Claims (10)
- 基材部と、
外部からのエネルギーにより電荷を発生する圧電繊維で構成され、前記基材部と伸縮率の異なる圧電繊維集合体と、
前記基材部と前記圧電繊維集合体とを接合する接合部と、
を備える、
圧電性繊維複合体。 - 前記接合部は、向かい合う部分を有し、
前記圧電繊維集合体は、前記向かい合う部分の間で伸張可能である、
請求項1に記載の圧電性繊維複合体。 - 前記基材部の伸縮率は、前記圧電繊維集合体の伸縮率よりも低い、
請求項1又は2に記載の圧電性繊維複合体。 - 基材部と、
外部からのエネルギーにより電荷を発生する圧電繊維で構成された圧電繊維集合体と、
前記基材部と前記圧電繊維集合体とを接合する複数の接合部と、を備え、
前記圧電繊維集合体は、使用時に少なくとも2つの前記接合部との間で伸張可能である、
圧電性繊維複合体。 - 前記圧電繊維集合体は、自然長よりも伸張させた状態で前記基材部に接合される、
請求項1乃至4の何れか一項に記載の圧電性繊維複合体。 - 前記基材部は、シート状に形成され、
前記圧電繊維集合体は、前記基材部の一方の面に配置されている、
請求項1乃至5の何れか一項に記載の圧電性繊維複合体。 - 前記圧電繊維集合体は、外部からのエネルギーによって抗菌性を発現する、
請求項1乃至5の何れか一項に記載の圧電性繊維複合体。 - 前記圧電繊維集合体は、ポリ乳酸を含む、
請求項1乃至請求項6の何れか一項に記載の圧電性繊維複合体。 - 請求項1乃至8の何れか一項に記載の前記圧電性繊維複合体を含み、
前記圧電繊維が伸張した状態で使用される、
圧電性衣料。 - 前記圧電繊維集合体が身体側に配置されている、
請求項9に記載の圧電性衣料。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020525402A JP7082664B2 (ja) | 2018-06-12 | 2019-05-27 | 圧電性繊維複合体、及び圧電性衣料 |
| CN201980038774.4A CN112262484B (zh) | 2018-06-12 | 2019-05-27 | 压电性纤维复合体和压电性衣料 |
| US17/094,357 US12063862B2 (en) | 2018-06-12 | 2020-11-10 | Piezoelectric fiber composite having separate joint portions and piezoelectric clothing containing the same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-112230 | 2018-06-12 | ||
| JP2018112230 | 2018-06-12 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US17/094,357 Continuation US12063862B2 (en) | 2018-06-12 | 2020-11-10 | Piezoelectric fiber composite having separate joint portions and piezoelectric clothing containing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019239867A1 true WO2019239867A1 (ja) | 2019-12-19 |
Family
ID=68843025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2019/020849 Ceased WO2019239867A1 (ja) | 2018-06-12 | 2019-05-27 | 圧電性繊維複合体、及び圧電性衣料 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US12063862B2 (ja) |
| JP (1) | JP7082664B2 (ja) |
| CN (1) | CN112262484B (ja) |
| WO (1) | WO2019239867A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021125194A1 (ja) * | 2019-12-20 | 2021-06-24 | 株式会社村田製作所 | 抗菌布 |
| CN116145304A (zh) * | 2023-02-28 | 2023-05-23 | 东华大学 | 一种无极化棉纤维素/pvdf复合压电织物及其制备方法和应用 |
| WO2024070739A1 (ja) * | 2022-09-30 | 2024-04-04 | 株式会社村田製作所 | 布および繊維製品 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021029401A1 (ja) * | 2019-08-14 | 2021-02-18 | テイクティ有限会社 | 振動発生装置 |
| CN113445152B (zh) * | 2021-04-23 | 2022-02-01 | 成都产品质量检验研究院有限责任公司 | 一种基于定岛超纤改性制备压电抗菌口罩滤材的方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016175321A1 (ja) * | 2015-04-30 | 2016-11-03 | 帝人株式会社 | 圧電素子およびそれを用いたデバイス |
| JP2016209149A (ja) * | 2015-04-30 | 2016-12-15 | 帝人株式会社 | 抗菌性の布帛状トランスデューサーおよびこれを使用した靴のインソール |
| WO2018084054A1 (ja) * | 2016-06-06 | 2018-05-11 | 株式会社村田製作所 | 発電体、発電装置およびセンサ |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6292368A (ja) | 1985-10-17 | 1987-04-27 | Nec Corp | 半導体装置 |
| JP2015109431A (ja) * | 2013-10-23 | 2015-06-11 | 株式会社Kri | 圧電ポリマー膜、アクチュエータ、感圧センサ及びそれを用いたデバイス |
| JP6593869B2 (ja) * | 2014-08-19 | 2019-10-23 | 国立大学法人信州大学 | 伸縮ファイバー、この伸縮ファイバーを用いた伸縮シート及びこの伸縮シートを用いたアシスト装置 |
| EP3376549B1 (en) | 2015-12-25 | 2021-01-27 | Mitsui Chemicals, Inc. | Piezoelectric substrate, piezoelectric woven fabric, piezoelectric knitted fabric, piezoelectric device, force sensor, actuator, and biological information acquisition device |
| US10667904B2 (en) * | 2016-03-08 | 2020-06-02 | Edwards Lifesciences Corporation | Valve implant with integrated sensor and transmitter |
| JP6950287B2 (ja) * | 2016-06-06 | 2021-10-13 | 株式会社村田製作所 | 動物の体表面の菌抑制方法、人間を除いた動物の白癬菌治療方法、および動物用の衣類 |
| JP6919343B2 (ja) * | 2016-06-06 | 2021-08-18 | 株式会社村田製作所 | 布、衣料、および医療部材 |
| CN108495961B (zh) * | 2016-11-01 | 2021-03-26 | 株式会社村田制作所 | 抗菌性非织造部件、抗菌性无纺布、和抗菌性缓冲材料 |
-
2019
- 2019-05-27 CN CN201980038774.4A patent/CN112262484B/zh active Active
- 2019-05-27 WO PCT/JP2019/020849 patent/WO2019239867A1/ja not_active Ceased
- 2019-05-27 JP JP2020525402A patent/JP7082664B2/ja active Active
-
2020
- 2020-11-10 US US17/094,357 patent/US12063862B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016175321A1 (ja) * | 2015-04-30 | 2016-11-03 | 帝人株式会社 | 圧電素子およびそれを用いたデバイス |
| JP2016209149A (ja) * | 2015-04-30 | 2016-12-15 | 帝人株式会社 | 抗菌性の布帛状トランスデューサーおよびこれを使用した靴のインソール |
| WO2018084054A1 (ja) * | 2016-06-06 | 2018-05-11 | 株式会社村田製作所 | 発電体、発電装置およびセンサ |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021125194A1 (ja) * | 2019-12-20 | 2021-06-24 | 株式会社村田製作所 | 抗菌布 |
| WO2024070739A1 (ja) * | 2022-09-30 | 2024-04-04 | 株式会社村田製作所 | 布および繊維製品 |
| CN116145304A (zh) * | 2023-02-28 | 2023-05-23 | 东华大学 | 一种无极化棉纤维素/pvdf复合压电织物及其制备方法和应用 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112262484B (zh) | 2025-02-18 |
| CN112262484A (zh) | 2021-01-22 |
| US20210057633A1 (en) | 2021-02-25 |
| JPWO2019239867A1 (ja) | 2021-02-25 |
| JP7082664B2 (ja) | 2022-06-08 |
| US12063862B2 (en) | 2024-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7082664B2 (ja) | 圧電性繊維複合体、及び圧電性衣料 | |
| US20240001269A1 (en) | Filter and air-conditioning device | |
| US11326279B2 (en) | Antibacterial yarn and antibacterial fabric | |
| JP6428979B1 (ja) | 抗菌糸、シート、およびシートカバー | |
| US20190281820A1 (en) | Antibacterial fiber | |
| WO2017212523A1 (ja) | 菌対策用圧電糸、菌対策用布、布、衣料、医療部材、生体作用圧電糸、および物質吸着用圧電糸 | |
| US11946172B2 (en) | Antibacterial twisted yarn, and antibacterial yarn and antibacterial cloth including antibacterial twisted yarns | |
| US20220074086A1 (en) | Yarn and fabric | |
| WO2019069660A1 (ja) | 圧電繊維 | |
| WO2021246461A1 (ja) | マスク | |
| US20220228300A1 (en) | Cylindrical structure | |
| JP6784334B2 (ja) | 抗菌糸及び抗菌繊維製品 | |
| WO2020111049A1 (ja) | 抗菌撚糸、並びに抗菌撚糸を備える抗菌糸及び抗菌布 | |
| US20220267934A1 (en) | Spun yarn, and yarn and cloth including spun yarn | |
| WO2019239866A1 (ja) | 抗菌繊維および衣料 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19819702 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2020525402 Country of ref document: JP Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 19819702 Country of ref document: EP Kind code of ref document: A1 |
|
| WWG | Wipo information: grant in national office |
Ref document number: 201980038774.4 Country of ref document: CN |