JP2018203636A - Antibacterial member - Google Patents

Abstract

To provide an antibacterial member of which effect is maintained for longer time than conventional materials having antibacterial property, and safety is higher than agents or the same.SOLUTION: An antibacterial member has a first fiber, and a second fiber. The first fiber generates an electric charge by energy from outside. The second fiber generates an electric charge with reversed polarity of the first fiber by energy from outside. Further the antibacterial member generates a positive electric charge and a negative electric charge by fitting each other.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an antibacterial member having antibacterial properties.

  Conventionally, many proposals have been made on fiber materials having antibacterial properties (see Patent Documents 1 to 7).

Japanese Patent No. 3281640 JP 7-310284 A Japanese Patent No. 3165992 Japanese Patent No. 1805853 JP-A-8-2226078 JP-A-9-194304 JP 2004-300650 A

  However, none of the materials having antibacterial properties lasted for a long time.

  In addition, an antibacterial material may cause an allergic reaction due to drugs or the like.

  Accordingly, an object of the present invention is to provide an antibacterial fiber that lasts longer than conventional antibacterial materials and is safer than drugs.

  The antibacterial member of the present invention includes a first fiber and a second fiber. The first fiber generates a charge by external energy. The second fiber generates a charge having a polarity opposite to that of the first fiber by external energy. Further, the antibacterial member generates a positive charge and a negative charge by rubbing the first fiber and the second fiber with each other.

  Conventionally, it has been known that generation of bacteria can be suppressed by an electric field (for example, Koichi Takagi, Application of High Voltage / Plasma Technology to Agriculture / Food Field, J.HTSJ, Vol.51, No. 216). In addition, a current may flow through a current path formed by moisture or the like, or a circuit formed by a local micro discharge phenomenon or the like, due to a potential generating the electric field. It is considered that this current weakens the bacteria and suppresses the growth of the bacteria. Since the antibacterial member of the present invention includes a first fiber that generates a positive charge by external energy and a second fiber that generates a negative charge by external energy, both are rubbed together. An electric field is generated between the first fiber and the second fiber. Or the antibacterial member of this invention flows an electric current between a 1st fiber and a 2nd fiber via a water | moisture content.

  The antibacterial member of the present invention is considered to exhibit an antibacterial effect for the following reasons. Cell membranes and fungi of bacteria due to the direct action of electric field or current generated when applied to items (medical items such as clothing, footwear, or masks) used in close proximity to items having a predetermined potential such as the human body This causes trouble in the electron transfer system for maintaining the life of the bacterium, killing the bacterium, or weakening the bacterium itself. Furthermore, oxygen contained in moisture may be changed to reactive oxygen species by an electric field or current, or oxygen radicals may be generated in 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 that step on radicals. In addition, the above reasons may be combined to produce an antibacterial effect. In addition, the antibacterial in this invention is a concept including both the effect which suppresses generation | occurrence | production of a microbe, or the effect which kills a microbe.

  In addition, the charge generation fiber which generates an electric charge with the energy from the outside can consider the fiber which used the substance which has a photoelectric effect, the substance which has a pyroelectric effect, or a piezoelectric material, for example. In addition, a structure in which an electric conductor is used as the core yarn, an insulator is wound around the electric conductor, and electricity is caused to flow through the electric conductor to generate electric charge is also a charge generating fiber.

  When a piezoelectric body is used, since an electric field is generated by piezoelectricity, a power source is unnecessary and there is no fear of electric shock. In addition, the lifetime of the piezoelectric body lasts longer than the antibacterial effect of drugs and the like. In addition, the risk of an allergic reaction is lower than that of drugs.

  According to this invention, it is possible to realize an antibacterial fiber that lasts longer than conventional antibacterial materials and is safer than drugs.

FIG. 1A is a diagram showing the configuration of the piezoelectric yarn 1, and FIG. 1B is a plan view of the piezoelectric film 10. 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 film 10. It is a figure which shows the piezoelectric yarn 1 when external force is engaged. FIG. 3 is a diagram illustrating a configuration of a piezoelectric yarn 2. FIG. 5A is a transparent perspective view illustrating an example of an antibacterial member including the sponge 100 and the foundation 200, and FIG. 5B is a cross-sectional view. It is the schematic which shows the example contained in the foundation 200 in the state by which the piezoelectric yarn 2 was crushed finely. It is sectional drawing which shows the aspect by which the elastic member 51 is arrange | positioned between the container 50 which accommodates the foundation 200, and the foundation 200. FIG. 4 is a cross-sectional view showing an example in which the first member is a brush 101. FIG. FIG. 9A is a cross-sectional view showing an example in which the second member is a liquid cosmetic 201 stored in the container, and FIG. 9B shows an inner wall in which the container storing the cosmetic includes the piezoelectric yarn 2. FIG. It is a figure which shows the specific aspect of the cosmetics which exhibit an antibacterial effect. It is the schematic which shows the brush 151 which has antimicrobial property. It is a figure which shows the brush 151 further provided with the normal thread | yarn 30 which is an example of a 3rd fiber. FIG. 3 is a schematic view showing a configuration of a towel hanger 70. It is a figure which shows the electric field produced between each thread | yarn. 15A is a schematic view of the sock 60 (viewed from the upper surface), and FIG. 15B is a view of the sock 60 viewed from the lower surface (the sole side). FIG. 16A is a view showing another example of the high-strength member, and FIG. 16B is a view showing a mode in which the sock 60 is brought into contact with the finger crotch by fitting the cap 80 to the finger crotch. is there. FIG. 17A is a schematic view showing an integrated cap 73 formed by combining a plurality of caps, and FIG. 17B is a diagram in which the socks 60 are brought into contact with the finger crotch by simultaneously fitting the plurality of finger crotches. It is a figure which shows an aspect.

  FIG. 1A is a partially exploded view showing the configuration of the piezoelectric yarn 1, and FIG. 1B is a plan view of the piezoelectric film 10. The piezoelectric yarn 1 is an example of a charge generation fiber (charge generation yarn) that generates a charge by external energy.

  The piezoelectric yarn 1 is an example of a first fiber or a second fiber in the present invention. The piezoelectric yarn 1 is formed by winding a piezoelectric film 10 around a core yarn 11. The core yarn 11 is appropriately selected from natural fibers or chemical fibers. Natural fibers include plant fibers, animal fibers, or polylactic acid. The plant fiber is, for example, cotton or hemp. Plant fiber absorbs moisture because it is soft to the touch and has a high affinity with water. When plant fiber is used, an electric current is likely to be generated due to the electric charge generated in the piezoelectric yarn 1 and the absorbed moisture. The animal fiber is, for example, silk or wool. When animal fibers are used, even if microorganisms such as insects are present in the animal fibers, the microorganisms can be killed by the charge generated by the piezoelectric yarn 1. When polylactic acid is used for the core yarn 11, it is preferable that the core yarn 11 is not uniaxially stretched so as not to generate an electric charge. As will be described later, when polylactic acid is used for the piezoelectric film 10, it becomes the same material as the core yarn 11, so that the affinity is increased. Examples of the chemical fiber include synthetic fiber, glass fiber, and carbon fiber. Chemical fibers are more robust than natural fibers.

  Further, the core yarn 11 may be a conductive yarn having conductivity. When the core yarn 11 is a conductive yarn, when the piezoelectricity of the piezoelectric yarn 1 is inspected, the charge formed in the piezoelectric yarn 1 using the electrode formed on a part of the outer periphery of the piezoelectric yarn 1 and the core yarn 11 is generated. It can be measured. Thereby, the piezoelectric performance of the piezoelectric film 10 used for the piezoelectric yarn 1 can be inspected. Further, when a conductor is used for the core yarn 11, if an electric current is passed through the core yarn 11, even if the insulator other than the piezoelectric film 10 is wound around the core yarn 11, it is charged by the energy from the outside. Can be realized.

  The core yarn 11 is not an essential configuration. Even without the core yarn 11, it is possible to turn the piezoelectric film 10 in a spiral shape to obtain a piezoelectric yarn (swivel yarn). When the core yarn 11 is not present, the swirl yarn becomes a hollow fiber, and the heat retaining ability is improved. Further, when the swirl yarn itself is impregnated with an adhesive, the strength can be increased.

  The piezoelectric film 10 is made of, for example, a piezoelectric polymer. Some piezoelectric films have pyroelectric properties and others do not have pyroelectric properties. For example, PVDF (polyvinylidene fluoride) has pyroelectricity, and charges are generated even when the temperature changes. A piezoelectric material having pyroelectric properties such as PVDF generates charges on the surface also by the thermal energy of the human body.

  Polylactic acid (PLA) is a piezoelectric film that does not have pyroelectricity. Polylactic acid produces 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.

  A chiral polymer such as polylactic acid has a helical structure in the main chain. A chiral polymer has piezoelectricity when uniaxially stretched and the molecules are oriented. Piezoelectric film 10 made of uniaxially stretched polylactic acid has a thickness direction defined as a first axis, stretch direction 900 defined as a third axis, and a direction perpendicular to both the first axis and the third axis as a second axis. The piezoelectric strain constant has t14 components of d14 and d25. Therefore, polylactic acid generates an electric charge when distortion occurs in a 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 film 10. As shown in FIG. 2A, when the piezoelectric film 10 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, the piezoelectric film 10 extends in the direction from the back side to the front side. Generates an electric field. That is, the piezoelectric film 10 generates a negative charge on the front side of the sheet. As shown in FIG. 2B, the piezoelectric film 10 generates electric charge when it extends in the direction of the first diagonal line 910A and contracts in the direction of the second diagonal line 910B, but the polarity is reversed and the surface of the paper surface An electric field is generated in the direction from the back to the back. That is, the piezoelectric film 10 generates a positive charge on the front side of the sheet.

  Since polylactic acid generates piezoelectricity by molecular orientation treatment by stretching, it is not necessary to perform poling treatment unlike other piezoelectric polymers such as PVDF or piezoelectric ceramics. 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.

  The piezoelectric film 10 is produced by cutting the uniaxially stretched polylactic acid sheet as described above to a width of about 0.5 to 2 mm, for example. As shown in FIG. 1B, the major axis direction and the stretching direction 900 of the piezoelectric film 10 coincide with each other. As shown in FIG. 1A, the piezoelectric film 10 becomes a piezoelectric yarn 1 of a left turning yarn (hereinafter referred to as S yarn) twisted by turning left with respect to the core yarn 11. The drawing direction 900 is inclined 45 degrees to the left with respect to the axial direction of the piezoelectric yarn 1.

  Therefore, as shown in FIG. 3, when an external force is applied to the piezoelectric yarn 1, the piezoelectric film 10 is in the state shown in FIG. 2A and generates a negative charge on the surface.

  As a result, the piezoelectric yarn 1 generates a negative charge on the surface when an external force is applied. Therefore, the piezoelectric yarn 1 generates a negative charge due to external energy.

  FIG. 4 is a diagram illustrating a configuration of the piezoelectric yarn 2 of a right turning yarn (hereinafter referred to as a Z yarn). Since the piezoelectric yarn 2 is a Z yarn, the stretching direction 900 is inclined 45 degrees to the right with respect to the axial direction of the piezoelectric yarn 1. Therefore, when an external force is applied to the piezoelectric yarn 2, the piezoelectric film 10 is in the state shown in FIG. 2B, and generates a positive charge on the surface. Therefore, the piezoelectric yarn 2 generates a positive charge by external energy. That is, the piezoelectric yarn 1 and the piezoelectric yarn 2 generate charges having opposite polarities due to external energy.

  The piezoelectric yarn is manufactured by any known method. For example, a method of extruding a piezoelectric polymer into a fiber, a method of melt-spinning the piezoelectric polymer to make a fiber, a method of fiberizing the piezoelectric polymer by dry or wet spinning, or a piezoelectric polymer It is possible to adopt a technique for forming a fiber by electrostatic spinning.

  In addition to the S yarn using PLLA, a Z yarn using PDLA is also conceivable as a yarn that generates a negative charge on the surface. In addition to the Z yarn using PLLA, S yarn using PDLA is also conceivable as a yarn that generates a positive charge on the surface.

  In the present embodiment, a piezoelectric yarn formed by winding a piezoelectric film is shown. However, the piezoelectric yarn may be, for example, a piezoelectric material that is ejected from a nozzle and stretched (piezoelectric yarn having a circular cross section). Even when such a yarn (covering yarn) formed by twisting a piezoelectric yarn having a circular cross section is formed, the S yarn generates a negative charge on the surface, and the Z yarn generates a positive charge on the surface. Let In such a yarn, the core yarn is not used, and it may be simply a twisted yarn. Such yarns can be made at low cost.

  Conventionally, it has been known that generation of bacteria can be suppressed by an electric field (for example, Koichi Takagi, Application of High Voltage / Plasma Technology to Agriculture / Food Field, J.HTSJ, Vol.51, No. 216). In addition, bacteria referred to in the present embodiment include bacteria or fungi.

  Therefore, the piezoelectric yarn 1 or the piezoelectric yarn 2 is generated by an electric field generated when approaching an object having a predetermined potential such as a human body or by an electric field generated when approaching an object having a predetermined potential such as a human body. Directly exhibits antibacterial effect. In addition, the antibacterial said by this embodiment is the concept containing both the effect which suppresses generation | occurrence | production of microbe, or the effect which kills microbe.

  In addition, the piezoelectric yarn 1 or the piezoelectric yarn 2 may cause a current to flow when it is in proximity to an object having a predetermined potential, such as another adjacent fiber or a human body, through moisture such as sweat. Even with this current, the antibacterial effect may be directly exhibited. Or, reactive oxygen species whose oxygen contained in moisture has been changed by the action of electric current or voltage, and radical species and other antibacterial chemical species (amine derivatives) caused by interaction with and / or catalyzing additives contained in the fiber. Etc.) may indirectly exert antibacterial effects. Alternatively, oxygen radicals may be generated in bacterial cells due to a stress environment due to the presence of an electric field or current, which may indirectly exert an antibacterial effect. As radicals, superoxide anion radicals (active oxygen) or hydroxy radicals can be generated.

  The charge generation yarn including the charge generation fiber that generates a charge by external energy as described above can be applied to products such as various clothes and medical members. For example, charge generation yarns include underwear (especially socks), towels, shoes and boots, sportswear, hats, bedding (including futons, mattresses, sheets, pillows, pillow covers, etc.), toothbrushes, floss, Various filters (filters for water purifiers, air conditioners or air purifiers), plush toys, pet-related products (pet mats, pet clothes, pet clothes inners), various mat products (feet, hands, toilet seats, etc.) , Curtains, kitchenware (sponge or cloth), sheets (cars, trains, airplanes, etc.), sofas, bandages, gauze, masks, sutures, doctor and patient clothes, supporters, sanitary goods, sports equipment (wear) In addition, the present invention can be applied to an inner of a glove, a sword used in a martial art, or a packaging material.

  Among the garments, in particular, socks (or supporters) always expand and contract along the joints due to movements such as walking, so that the piezoelectric yarn 1 or the piezoelectric yarn 2 generates a charge at a high frequency. The sock absorbs moisture such as sweat and becomes a hotbed for bacterial growth. However, since the piezoelectric yarn 1 or the piezoelectric yarn 2 can suppress the bacterial growth, it has a remarkable effect as a bacterial countermeasure application. Arise.

  Many bacteria have a negative charge. Therefore, the cloth provided with the piezoelectric yarn 2 can adsorb many bacteria due to the generated positive charges. Moreover, the cloth provided with the piezoelectric yarn 2 can inactivate bacteria having a negative charge by the generated positive charge. As described above, the cloth using the piezoelectric yarn that generates a positive charge on the surface has a high effect as a microbe-controlling piezoelectric yarn.

  A transducer that senses that a displacement has been applied to a knitted or woven fabric using a plurality of piezoelectric yarns and conductive yarns is disclosed in WO2015 / 159832. 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. In WO2015 / 159832, when an electric charge is generated in the piezoelectric yarn, electrons move through the conductive yarn, and the electric charge generated in the piezoelectric yarn is immediately neutralized. In WO2015 / 159832, a current detected by the movement of electrons is detected by a detection circuit and output as a signal. Therefore, in this case, since the generated potential is canceled immediately, a strong electric field is not formed between the piezoelectric yarn and the conductive yarn and between the piezoelectric yarn and the piezoelectric yarn, and the antibacterial effect is not exhibited.

  In addition, the piezoelectric yarn 1 or the piezoelectric yarn 2 (or a cloth including at least one) has the following uses in addition to the anti-bacterial measures.

(1) Biologically acting piezoelectric yarn Many tissues constituting a living body have piezoelectricity. For example, collagen constituting the human body is a kind of protein, and is contained in a large amount in blood vessels, dermis, ligaments, healthy, bone, cartilage and the like. Collagen is a piezoelectric body, and a tissue in which collagen is oriented may exhibit very large piezoelectricity. Many reports have already been made on the piezoelectricity of bone (see, for example, Polymer Vol. 16 (1967) No. 9 p795-200). Therefore, when an electric field is generated by the cloth including the piezoelectric yarn 1 or the piezoelectric yarn 2 and the electric field alternates or the intensity of the electric field changes, the piezoelectric body of the living body vibrates due to the inverse piezoelectric effect. Changes in the alternating electric field generated by the piezoelectric yarn 1 and / or the piezoelectric yarn 2 or the change in the electric field strength may cause minute vibrations to be applied to a part of the living body, for example, a capillary blood vessel or dermis, thereby promoting improvement of blood flow in that part. it can. This may promote healing of skin diseases and wounds. Accordingly, the piezoelectric yarn functions as a biologically acting piezoelectric yarn. A transducer that senses that displacement has been applied to a knitted fabric or woven fabric using a plurality of piezoelectric yarns and conductive yarns is disclosed in WO2015 / 159832. 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. In WO2015 / 159832, when charges are generated in the piezoelectric yarn, electrons move through the conductive yarn, and the generated charge is immediately neutralized. In WO2015 / 159832, a current detected by the movement of electrons is detected by a detection circuit and output as a signal. Therefore, in this case, since the generated potential is canceled immediately, a strong electric field is not formed between the piezoelectric yarn and the conductive yarn and between the piezoelectric yarn and the piezoelectric yarn, and the healing effect is not exhibited.

(2) Piezoelectric yarn for substance adsorption As described above, the piezoelectric yarn 1 generates a negative charge when an external force is applied. The piezoelectric yarn 2 generates a positive charge when an external force is applied. Therefore, the piezoelectric yarn 1 has a property of adsorbing a substance having a positive charge (for example, particles such as pollen), and the piezoelectric thread 2 adsorbs a substance having a negative charge (for example, a harmful substance such as yellow sand). To do. Therefore, the cloth provided with the piezoelectric yarn 1 or the piezoelectric yarn 2 can adsorb fine particles such as pollen or yellow sand when applied to medical supplies such as a mask. A transducer that senses that displacement has been applied to a knitted fabric or woven fabric using a plurality of piezoelectric yarns and conductive yarns is disclosed in WO2015 / 159832. 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. In WO2015 / 159832, when charges are generated in the piezoelectric yarn, electrons move through the conductive yarn, and the generated charge is immediately neutralized. In WO2015 / 159832, a current detected by the movement of electrons is detected by a detection circuit and output as a signal. Therefore, in this case, since the generated potential is canceled immediately, a strong electric field is not formed between the piezoelectric yarn and the conductive yarn and between the piezoelectric yarn and the piezoelectric yarn, and the adsorption effect is not exhibited.

  Next, in this embodiment, some examples of the antibacterial member using the piezoelectric yarn 1 or the piezoelectric yarn 2 as described above are shown.

(First example)
Sponges or foundations absorb skin sebum and oil, so that bacteria can easily propagate. Moreover, the bacteria propagated by the sponge or the foundation may adhere to the container for storing the foundation, and the bacteria may propagate in the container.

  Therefore, for example, it is conceivable that the sponge is periodically cleaned with a cleaning liquid such as water, or an antibacterial metal foil is disposed inside the container as disclosed in JP-A-11-75932.

  However, it is cumbersome for the user to clean the sponge regularly. In addition, when the cleaning solution is not completely dried, fungi may be generated. When placing an antibacterial metal foil inside the container, for example, if the user uses a sponge with a slightly peeled metal foil, the metal foil adheres to the skin, causing a metal allergic reaction. It may occur.

  FIG. 5A is a transparent perspective view illustrating an example of an antibacterial member including the sponge 100 and the foundation 200. The sponge 100 is an example of a first member, and the foundation 200 is an example of a second member.

  In the example of FIG. 5A, the piezoelectric yarn 1 is included in the sponge 100. In addition, the foundation 200 includes the piezoelectric yarn 2. The piezoelectric yarn 1 is formed in a mesh shape. The piezoelectric yarn 1 may be disposed inside the sponge 100 or may be formed in a net shape so as to cover the sponge 100.

  The piezoelectric yarn 2 is also formed in a mesh shape. The piezoelectric yarn 2 is disposed inside the foundation 200 and is disposed on the surface of the foundation 200. The piezoelectric yarn 2 may also be formed in a net shape so as to cover the foundation 200.

  According to this configuration, when the user grips and moves the sponge 100 and rubs the sponge 100 and the foundation 200 as shown in FIG. 5B, the piezoelectric yarn 1 and the piezoelectric yarn 2 are deformed, respectively. Therefore, a negative charge is generated in the piezoelectric yarn 1, and a positive charge is generated in the piezoelectric yarn 2.

  Further, simply pressing the foundation 200 against the sponge 100 deforms the piezoelectric yarn 1 and the piezoelectric yarn 2, so that a negative charge is generated in the piezoelectric yarn 1 and a positive charge is generated in the piezoelectric yarn 2.

  Therefore, when the user grips the sponge 100 and tries to attach the foundation 200 to the sponge 100, an electric field is generated between the piezoelectric yarn 1 and the piezoelectric yarn 2. Alternatively, a current flows between the piezoelectric yarn 1 and the piezoelectric yarn 2. These electric fields or currents exhibit an antibacterial effect.

  Note that the piezoelectric yarn 1 and the piezoelectric yarn 2 do not need to be in direct contact with each other. When the sponge 100 and the foundation 200 are rubbed together, the sponge 100 and the foundation 200 are deformed, so that the piezoelectric yarn 1 and the piezoelectric yarn 2 are also deformed. Also in this case, the piezoelectric yarn 1 that is an example of the first fiber and the piezoelectric yarn 2 that is an example of the second fiber are rubbed against each other, thereby generating a positive charge and a negative charge.

  In this case, since the piezoelectric yarn 1 and the piezoelectric yarn 2 are respectively provided on separate members (sponge and foundation), a strong electric field or current is not used when the piezoelectric yarn 1 and the piezoelectric yarn 2 are brought close to each other at the time of manufacture. Since it can be generated, the manufacturing process can be simplified. When the piezoelectric yarn 1 and the piezoelectric yarn 2 are rubbed together, a strong electric field or current is generated not only in the thickness direction but also in the surface direction, whereas in this structure, a strong electric field or current is always generated in the thickness direction. Therefore, for example, even if the foundation to be attached to the sponge has some thickness, the antibacterial effect can be surely exhibited.

  Note that even if the polylactic acid in the piezoelectric yarn 1 or a part of the piezoelectric yarn 2 is peeled off and adheres to the skin, or even if the piezoelectric yarn 2 itself adheres, the polylactic acid is biodegradable, so There is no influence.

  Further, the piezoelectric yarn 1 or the piezoelectric yarn 2 does not need to be formed in a mesh shape. For example, as shown in FIG. 6, the piezoelectric yarn 2 may be included in the foundation 200 in a finely crushed state.

  Also in this case, since the piezoelectric yarn 2 is deformed when the foundation 200 is deformed, a positive charge is generated on the surface of the piezoelectric yarn 2. Even if the polylactic acid in a part of the piezoelectric yarn 2 peels off and adheres to the skin, or the piezoelectric yarn 2 itself adheres, the polylactic acid is biodegradable and thus has no effect on the skin.

  Further, as shown in FIG. 7, an elastic member 51 may be disposed between the container 50 that houses the foundation 200 and the foundation 200. In this case, when the sponge 100 is pressed against the foundation 200 and the sponge 100 is stored in the container 50, the sponge 100 and the foundation 200 are rubbed together by shaking when the user carries it. Therefore, the piezoelectric yarn 1 and the piezoelectric yarn 2 are deformed to generate a positive charge and a negative charge.

  In the above description, the sponge 100 is shown as an example of the first member. However, the first member is not limited to the sponge. For example, as shown in FIG. 8, the brush 101 is also an example of the first member. In this case, the same effect is exhibited by using the bristles of the brush 101 as the piezoelectric yarn 1.

  In the above description, the foundation 200 is shown as an example of the second member. However, the second member is not limited to the foundation. For example, as shown in FIG. 9A, a liquid cosmetic 201 stored in a container is an example of the second member. In this case, the cosmetic 201 includes the piezoelectric yarn 2 in a finely crushed state. When the user pulls out the brush including the piezoelectric yarn 1 from the container, the piezoelectric yarn 1 and the piezoelectric yarn 2 are deformed, so that a positive charge and a negative charge are generated.

  Further, as shown in FIG. 9B, a container for storing cosmetics may include an inner wall 202 including the piezoelectric yarn 2. In this case, the inner wall 202 is the second member. Also in this case, when the user pulls out the brush provided with the piezoelectric yarn 1, the piezoelectric yarn 1 and the piezoelectric yarn 2 are deformed, so that a positive charge and a negative charge are generated. The inner wall 202 including the piezoelectric yarn 2 may be one in which the finely crushed piezoelectric yarn is attached to the container, or may be one in which a net-like piezoelectric fiber is attached to the inner periphery of the case. In these structures, since the inner wall surface has irregularities, the piezoelectric yarn 1 and the piezoelectric yarn 2 are easily caught (easy to deform) when the brush is pulled out. Therefore, a stronger electric field or current can be generated.

(Second example)
Cosmetics such as facial cleansers contain components that eliminate bacteria contained in sebum (for example, chemically synthesized surfactants made from petroleum or alcohol).

  However, since these components are highly irritating to the skin and eliminate the sebum necessary for protecting the skin together with the bacteria, they cause a reduction in the condition of the skin such as dry skin.

  Therefore, in the second example, a cosmetic that can exhibit an antibacterial effect without using the above-described components is provided.

  FIG. 10 is a diagram showing a specific embodiment of a cosmetic product that exhibits an antibacterial effect. In FIG. 10, the face wash 205 is stored in a container 50. The face wash 205 includes the piezoelectric yarn 1 and the piezoelectric yarn 2.

  The piezoelectric yarn 1 and the piezoelectric yarn 2 are included in the cosmetic product 201 in a finely crushed state. The cosmetic product 201 is a gel-like or cream-like liquid. The piezoelectric yarn 1 and the piezoelectric yarn 2 have a length of 1 mm or less and are powdery in appearance. However, the piezoelectric yarn 1 and the piezoelectric yarn 2 have such a length that a positive charge or a negative charge is generated by deformation. The piezoelectric yarn 1 and the piezoelectric yarn 2 are preferably about 20 μm long. Since the pores are approximately 80 μm to 150 μm in size, the piezoelectric yarn 1 and the piezoelectric yarn 2 can penetrate into the pores as long as the length is about 20 μm.

  When the user attaches the cosmetic product 201 to the skin, the piezoelectric yarn 1 and the piezoelectric yarn 2 adhere to the skin together with the cosmetic product 201 and exhibit an antibacterial effect. In addition, the piezoelectric yarn 1 and the piezoelectric yarn 2 invade skin diseases or pores and eliminate bacteria of skin diseases or pores. Since the piezoelectric yarn 1 and the piezoelectric yarn 2 are made of polylactic acid, there is no adverse effect on the skin. Since the piezoelectric yarn 1 and the piezoelectric yarn 2 are included in the cosmetic product 201 which is an example of an insulator, an electric field may be generated through the insulator, and an electric current may be passed through the moisture of the skin. .

  In this example, in order to exert an antibacterial effect by the piezoelectric yarn 1 and the piezoelectric yarn 2, the amount of components that eliminate bacteria contained in sebum (for example, a chemically synthesized surfactant made from petroleum or alcohol) is reduced. However, the antibacterial effect is not greatly reduced. Therefore, the irritation | stimulation to skin can be suppressed and the fall of the condition of skin can be suppressed.

  Note that the piezoelectric yarn 1 and the piezoelectric yarn 2 do not need to be included in the cosmetic 201 in advance. The user can also purchase a powder body composed of the piezoelectric yarn 1 and the piezoelectric yarn 2 and mix it with a favorite cosmetic (or a cosmetic with reduced sebum-removing ingredients). In this case, the user can adjust the amount of the powder body to a desired amount depending on the state of the skin.

  JP-A-2014-043566 and JP-A-2007-197602 disclose that polylactic acid is formed in a powder form. However, in the second example of the present embodiment, the antibacterial effect is exhibited by the negative charge and the positive charge generated by the piezoelectric yarn 1 and the piezoelectric yarn 2, and has a new technical idea.

The technical idea according to the second example is as follows.
1. A first fiber that generates a charge by external energy;
A second fiber that generates a charge opposite in polarity to the first fiber by external energy;
A powder body mixed.

  2. In the powder body, the first fiber and the second fiber are the same amount.

  3. Both said powder body 1st fiber and 2nd fiber shall be 1 mm or less in length.

  4). An insulator including the powder body.

  5. The insulator includes a gel-like or cream-like liquid.

(Third example)
Conventionally, as a brush having antibacterial properties, for example, Japanese Patent Application Laid-Open No. 2009-261751 describes that an inorganic antibacterial agent having an average particle diameter of 10 μm or less is fixed to the hair surface.

  However, since the antibacterial agent is peeled off by rubbing while using the brush, the antibacterial property is lowered. In addition, an antibacterial material may cause an allergic reaction due to drugs or the like.

  Therefore, a third example aims to provide a brush that lasts longer than conventional antibacterial materials and is safer than drugs and the like.

  FIG. 11 is a schematic view showing an antibacterial brush 151. The hair in the brush 151 is formed by alternately arranging the piezoelectric yarns 1 and the piezoelectric yarns 2. When the user rubs the brush 151, the hair of the brush 151 is deformed, so that a positive charge and a negative charge are generated in the piezoelectric yarn 1 and the piezoelectric yarn 2. Therefore, it exhibits an antibacterial effect. In addition, the antibacterial effect is generated not only on the brush 151 itself, but also on an object that contacts the brush 151.

  In the example of FIG. 11, the bristles of the brush 151 are formed by alternately arranging the piezoelectric yarns 1 and the piezoelectric yarns 2. However, the bristles of the brush 151 need only have at least one piezoelectric yarn 1 and one piezoelectric yarn 2 arranged, and need not be arranged alternately.

  Moreover, as shown in FIG. 12, the brush 151 may further include a normal thread 30 which is an example of a third fiber. Also in this case, when the user rubs the brush 151, the hair of the brush 151 is deformed, so that a positive charge and a negative charge are generated in the piezoelectric yarn 1 and the piezoelectric yarn 2. In particular, in this case, the normal yarn 30 is longer than the piezoelectric yarn 1 and the piezoelectric yarn 2. Since the normal yarn 30 uses a material that has a relatively good touch compared to the piezoelectric yarn 1 and the piezoelectric yarn 2, only the hair that has a good touch touches the skin.

  The bristles of the brush 151 need not be the piezoelectric yarn itself. For example, when the piezoelectric yarn 1 or the piezoelectric yarn 2 is wound around normal hair made of a material such as nylon, the first hair is wound with the first fiber, and the second hair is wound with the second fiber. It is also possible to realize hair. Further, the piezoelectric yarn 1 or the piezoelectric yarn 2 can be configured by winding the piezoelectric film 10 around a normal hair made of a material such as nylon.

  The technical idea according to the above third example is as follows.

1. A first fiber that generates a charge by external energy;
A second fiber that generates a charge opposite in polarity to the first fiber by external energy;
A fixing portion that fixes one end of the first fiber and the second fiber such that the longitudinal direction of the first fiber and the longitudinal direction of the second fiber are parallel to each other;
A brush comprising:

2. In the brush, the first hair is wound around the first fiber, and the second hair is wound around the second fiber,
The fixing unit fixes one end of the first fiber and the second fiber by fixing one end of the first hair and the second hair.

  3. The brush includes a third fiber, and the length of the third fiber in the longitudinal direction is longer than the lengths of the first fiber and the second fiber in the longitudinal direction.

(Fourth example)
Japanese Patent Application Laid-Open No. 2011-1779143 discloses a polylactic acid ultrafine fiber that exhibits antibacterial properties by a polylactic acid fiber. However, the antibacterial property of polylactic acid itself is low, and the antibacterial activity value A ≧ 2.0 to 2.2.

  Therefore, a fourth example aims to provide an antibacterial fiber that is more effective than a conventional antibacterial fiber having antibacterial properties but lasts longer and is safer than drugs and the like.

  FIG. 13 is a schematic view showing the configuration of the towel hanger 70. The towel hanger 70 includes a first holding member 71 and a second holding member 72. The cloth 75 is hung on the first holding member 71 and the second holding member 72.

  The cloth 75 has the first piezoelectric yarn 1 or the second piezoelectric yarn. The cloth 75 is formed by weaving or knitting each fiber including the first piezoelectric yarn 1 or the second piezoelectric yarn.

  FIG. 14 is a diagram showing an electric field generated between the yarns. The cloth 75 is formed by weaving, for example, the piezoelectric yarn 1, the piezoelectric yarn 2, and the ordinary yarn 3. The ordinary yarn 3 is a yarn not provided with a piezoelectric body and corresponds to a dielectric. The ordinary yarn 3 is made of natural fiber or chemical fiber.

  The piezoelectric yarn 1 and the piezoelectric yarn 2 are arranged apart from each other by a predetermined distance via a normal yarn 3 corresponding to a dielectric. Therefore, when an external force is applied to these yarns, an electric field indicated by a white arrow in the figure is generated between the piezoelectric yarn 2 that generates a positive charge and the piezoelectric yarn 1 that generates a negative charge. However, the normal yarn 3 is not an essential configuration. Even if the ordinary yarn 3 is not present, an electric field is generated between the piezoelectric yarn 1 and the piezoelectric yarn 2.

  Therefore, the cloth 75 functions as a cloth that generates an electric field. In addition, the cloth 75 may cause a current to flow between the piezoelectric yarn 1 and the piezoelectric yarn 2 through moisture. This current may also exert an antibacterial effect.

  However, the antibacterial effect cannot be exhibited only by hanging the cloth 75 on the towel hanger because the piezoelectric fiber of the cloth 75 does not expand and contract.

  Therefore, in the fourth example, the holding member is provided with a tension mechanism for applying tension to the antibacterial fiber. In the example of FIG. 13, the first holding member 71 includes an actuator (for example, a vibration motor) and vibrates up and down. When the first holding member 71 vibrates up and down, tension is applied to the cloth 75 and the piezoelectric fiber expands and contracts.

  In the example of FIG. 13, the first holding member 71 vibrates and tension is applied to the cloth 75 by the first holding member 71 and the second holding member 72. However, for example, even if the first holding member 71 is a single body and the cloth 75 is hung on the first holding member 71 and the first holding member 71 vibrates, the piezoelectric fibers of the cloth 75 can be expanded and contracted.

  In addition, although the towel hanger was shown in the example of FIG. 13, a clothes hanger, a roll towel, a sheet | seat, a belt conveyor, etc. also correspond to a 4th example.

  The technical idea according to the fourth example is as follows.

1. An antibacterial fiber that generates charge by external energy,
A holding member for holding the antibacterial fiber;
With
The holding member includes a tension mechanism for applying tension to the antimicrobial fiber.
Retaining tool.

  2. The antibacterial fiber includes a first thread and a second thread.

  3. The holding member includes a first holding member and a second holding member that are in contact with the antibacterial fiber, and the tension mechanism is configured by the first holding member or the second holding member vibrating.

(Fifth example)
As antibacterial socks, those using a thread to which a drug is attached, or those using a thread containing a metal having antibacterial properties have been proposed (see, for example, Japanese Patent Publication No. 6-84561).

  However, yarns using drugs or metals may cause allergic reactions.

  Therefore, in the fifth example, an antibacterial fiber that lasts longer than a conventional antibacterial material and has higher safety than drugs or the like is provided. In addition, if the yarn uses a charge generating member that generates charges by external energy such as a piezoelectric material, high antibacterial properties can be exhibited. However, in order to exert stronger antibacterial properties, it is preferable to physically contact the antibacterial member with the target portion. For example, in order to exert an effect against ringworm fungus, it is preferable to contact an antibacterial fiber with the toe crotch. Therefore, the fifth example is an aspect in which an antibacterial member is physically brought into contact with a target portion in order to exert stronger antibacterial properties.

  FIG. 15A is a schematic view of the sock 60 (viewed from above). FIG. 15B is a view of the sock 60 as viewed from the lower surface (the sole side). The sock 60 has five toes and can be worn on each finger.

  The sock 60 includes the piezoelectric yarn 1 or the piezoelectric yarn 2. Although all the fibers constituting the sock 60 may be the piezoelectric yarn 1 or the piezoelectric yarn 2, the piezoelectric yarn 1 or the piezoelectric yarn 2 may be partially included. For example, the piezoelectric yarn 1 or the piezoelectric yarn 2 is disposed on the toe portion. In particular, in the fifth example, the piezoelectric yarn 1 or the piezoelectric yarn 2 only needs to be disposed at least on the finger crotch.

  When the user walks while wearing socks 60, the piezoelectric yarn 1 or the piezoelectric yarn 2 expands and contracts. Therefore, the sock 60 exhibits an antibacterial effect.

  The sock 60 has a high-strength portion 65 that is relatively stronger than other portions. The high-strength portion 65 is disposed on the front surface side and the sole side of the sock 60 from the finger crotch to the heel portion. However, the high strength portion 65 may be arranged on either the front surface side or the sole side of the sock 60.

  The high strength portion 65 is made of, for example, an aramid fiber. Aramid fibers have higher strength and lower stretchability than common fibers such as cotton. Alternatively, the high-strength portion 65 has a smaller mesh than other portions. Since the mesh is small, the strength is higher than other portions and the stretchability is low. That is, in this example, even when the same piezoelectric fiber is used, the stretchability can be changed by partially changing the knitting method.

  When the user puts on socks, the fiber of the finger crotch is pulled by the high-strength portion 65, and the fiber comes into contact with the finger crotch. Therefore, the piezoelectric yarn 1 or the piezoelectric yarn 2 contacts the finger crotch. Therefore, the sock 60 exhibits stronger antibacterial properties at the finger crotch. In addition, a piezoelectric yarn using polylactic acid is less likely to cause an allergic reaction than a drug.

  FIG. 16A is a diagram illustrating another example of a high-strength member. The cap 80 is made of a metal such as titanium or silicon resin. The cap 80 has a shape along the finger crotch. As shown in FIG. 16B, the user can bring the sock 60 into contact with the finger crotch by fitting the cap 80 to the finger crotch.

  In addition, the user uses the integrated cap 73 formed by combining a plurality of caps as shown in FIG. 17 (A), and simultaneously fits the plurality of finger crotches as shown in FIG. 60 can be brought into contact with the finger crotch.

  The technical idea according to the fifth example is as follows.

1. An antibacterial fiber that generates charge by external energy,
A fabric containing the antimicrobial fiber;
A high-strength member having higher strength than the dough,
With
The antibacterial fiber is urged toward the target portion by the high strength member.
Antibacterial member.

  2. In the antibacterial member, the high-strength member is made of a fiber having lower elasticity than the fabric.

  3. In the antibacterial member, the high-strength member is formed by a knitting method that is less stretchable than the fabric.

4). An antibacterial fiber that generates charge by external energy,
A fabric containing the antimicrobial fiber;
An urging member for urging the antibacterial fiber to the object;
Antibacterial member with

  In the above embodiment, the piezoelectric yarn is shown as a fiber that generates a charge by external energy. However, the fiber that generates a charge by external energy is, for example, a substance having a photoelectric effect or a pyroelectric effect. There are substances having a property (for example, PVDF), substances that generate electric charges by chemical change, and the like. In addition, a structure in which a conductor is used for the core yarn, an insulator is wound around the conductor, and electricity is generated by flowing electricity through the conductor is also a fiber that generates charges. However, since the piezoelectric body generates an electric field due to piezoelectricity, a power source is unnecessary and there is no fear of electric shock. In addition, the lifetime of the piezoelectric body lasts longer than the antibacterial effect of drugs and the like. In addition, the risk of an allergic reaction is lower than that of drugs.

  Finally, the description of the present embodiment should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the claims. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

DESCRIPTION OF SYMBOLS 1 ... 1st piezoelectric thread 2 ... 2nd piezoelectric thread 3 ... Normal thread 10 ... Piezoelectric film 11 ... Core thread 30 ... Normal thread 50 ... Container 51 ... Elastic member 60 ... Socks 65 ... High-strength part 70 ... Towel hanger 71 ... 1st DESCRIPTION OF SYMBOLS 1 Holding member 72 ... 2nd holding member 75 ... Integrated cap 100 ... Sponge 101 ... Brush 151 ... Brush 200 ... Foundation 201 ... Cosmetic 205 ... Face wash 202 ... Inner wall 900 ... Stretching direction 910A ... 1st diagonal 910B ... 2nd diagonal

Claims (7)

A first fiber that generates a charge by external energy;
A second fiber that generates a charge opposite in polarity to the first fiber by external energy;
With
The first fiber and the second fiber are rubbed together to produce a positive charge and a negative charge,
Antibacterial member. A first member gripped by a user;
The first fiber or the second fiber is included in the first member.
The antibacterial member according to claim 1. The first member is moved by a user and rubbed with the second fiber,
The antibacterial member according to claim 2. A container for storing the first fiber or the second fiber;
An elastic member is disposed between the container and the first fiber or the second fiber.
The antibacterial member according to claim 1 or 2. A container for storing the first fiber or the second fiber;
The antibacterial member according to any one of claims 1 to 3. The first fiber or the second fiber is disposed on the inner wall of the container,
The antibacterial member according to claim 5. A second member housed in the container;
The first fiber or the second fiber is included in the second member.
The antibacterial member according to claim 5.

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