JP2006116337A - Washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing machine which can apply antistatic properties to clothes without discoloring clothes by an easy method. <P>SOLUTION: This washing machine is used for enhancing antistatic characteristic for clothes and equipped with a washing and dehydrating tub 3 and an electrolytic part 20 which is placed in a water feeding passage to the washing and dehydrating tub 3 and has silver plates as electrodes 24, 25. After completion of a washing process, water containing silver ions is fed to laundry in the washing and dehydrating tub 3 through the electrolytic part 20, water is discharged after rinsing for a predetermined time, silver ion containing water is supplied to the laundry in the washing and dehydrating tub 3 through the electrolytic part 20 prior to doing a dehydrating process so as to relatively increase silver ions existing on the surface of clothes. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention generally relates to a washing machine, and more particularly to a washing machine for improving the antistatic performance of clothing.

  In winter, the air dries and you may feel static electricity just by touching the door knob or car. In addition, static electricity is generated by friction each time the skirt lining (polyester fiber structure), which is a fiber structure containing chemical fibers, and the stocking (nylon fiber structure) walk. Due to the generation of static electricity, the skirt clings to the feet, and the wearer may feel difficult to walk. There is also a problem that the dust in the atmosphere is attracted to the clothes due to the generation of static electricity, and the clothes gradually become dirty.

  Conventionally, antistatic sprays and the like have been marketed in order to eliminate these phenomena. However, spraying the entire clothes you wear is a lot of work, and spraying every time you change clothes is not only costly, but also cumbersome.

  Under such circumstances, it is routinely prevented from generating static electricity in the garment by adding a softening finish mainly composed of a cationic surfactant during washing. This softener aims to prevent the generation of static electricity by increasing the electrical conductivity of the clothing surface by attracting moisture in the atmosphere to the fibers. For this reason, there has been a problem that almost no effect can be obtained in a dry environment in winter where generation of static electricity is particularly problematic.

  Measures for clothing itself include ultra-fine metal threads that are elongated silver and copper to prevent the generation of static electricity, plated threads that are formed by plating silver or copper on the surface of the threads, conductive fibers, or carbon fibers. Attempts have been made to construct fiber structures by combining them.

  For example, Japanese Patent Laid-Open No. 10-140439 (Patent Document 1) discloses a wide range of ears of cloth as a cloth for kimono that can be worn without worrying about static electricity and has a good appearance and texture. In particular, a material in which silver-plated nylon is woven as a conductive fiber has been proposed.

  Japanese Patent Laid-Open No. 2000-34640 (Patent Document 2) describes that a yarn made of silver fibers is woven in an arbitrary ratio in a woven fabric knitted in an arbitrary weaving method in order to suppress the amount of static electricity charged during use. A silver fiber encased body knitted in is proposed.

  Further, JP-A-2001-49541 (Patent Document 3) describes a synthetic resin film as an antibacterial metal such as silver, copper, or zinc as an antistatic metal even after repeated washing, by vacuum deposition or ion Vapor deposition is performed to form a vapor-deposited film, and the formed synthetic resin films are bonded together so that the vapor-deposited film is on the inside. A laminated yarn formed in this manner has been proposed.

In addition, edited by the Japan Society of Home Economics, “Resources and Materials for Clothing,” Asakura Shoten Co., Ltd., issued December 10, 1989, pages 163 to 164 (Non-patent Document 1), pages 163 to 164 4. “Adding added value to clothing materials d. Principle of imparting antistatic properties” includes “wool, cotton” so that static electricity is not generated as much as possible, or it is immediately released to others when it occurs. Further, it is described that a hygroscopic fiber such as rayon is mixed, a metal fiber such as copper, aluminum or stainless steel, or a conductive fiber such as carbon is mixed.
Japanese Patent Laid-Open No. 10-140439 JP 2000-34640 A JP 2001-49541 A Edited by Japan Society of Home Economics “Clothing Resources and Clothing Materials”, Asakura Shoten Co., Ltd., issued December 10, 1989, pp. 163-164

  According to the methods proposed in JP-A-10-140439, JP-A-2000-34640, and JP-A-2001-49541, silver contained in silver-plated nylon, silver fiber, or vapor-deposited film is among metals. It has the highest conductivity and can suppress the amount of static electricity that is charged during use. However, the laminated yarn including the metal-plated fiber, the metal yarn, or the metal vapor-deposited film has a problem that the appearance of the fiber structure is deteriorated because the surface is oxidized and blackened by the bleaching agent.

  In addition, as described in “Clothing Resources and Clothing Materials”, when conductive fibers such as carbon are mixed, the carbon fibers are black, so that products such as clothes that can be used as a fiber structure are limited. There is a problem.

  Further, commodities such as clothes as a fiber structure using metal-plated fibers, metal yarns, or laminated yarns including a metal-deposited film as proposed in the above publication are sold at a higher price than conventional ones. Therefore, it is very difficult to make all the clothes that can be usually worn using such special fibers or yarns to make antistatic processed products.

  Accordingly, an object of the present invention is to provide a washing machine capable of imparting antistatic properties to clothing by a simple method without causing discoloration of the clothing.

  A washing machine according to the present invention is a washing machine used for improving the antistatic performance of clothing, and is disposed in a washing / dehydrating tub and a water supply path to the washing / dehydrating tub. After the washing process is completed, supply water containing silver ions to the laundry in the washing and dehydrating tub through the electrolytic part, and after performing a rinsing process for a predetermined time, drain the water, Before carrying out the dehydration step, water containing silver ions is supplied to the laundry in the washing and dehydrating tub through the electrolysis unit, and the amount of silver deposited on the surface of the clothing is relatively increased. To do.

  In the washing machine according to the present invention, after water containing silver ions is present on the surface of the clothing, the antistatic property can be imparted to the clothing simply by drying, and the adhesion amount of silver present on the surface of the clothing Therefore, the antistatic performance of the garment can be improved by a simpler method than the conventional method. In the washing machine of the present invention, an antistatic function can be imparted to the surface of clothing by attaching a small amount of silver or a silver compound to the surface of the fiber structure. For this reason, antistaticity can be imparted to the surface of the garment without causing discoloration of the garment.

  In the washing machine according to the present invention, water containing silver ions is applied to the surface of the clothing so that the water containing silver ions is adsorbed on the surface of the clothing due to surface tension. Preferably, the silver or silver compound is deposited on the surface of the garment by drying. In this case, the liquid can be allowed to remain on the surface of the garment without getting into the garment, so that an antistatic function can be achieved by attaching a smaller amount of metal or metal compound to the garment surface. Can be applied to the surface.

  In the washing machine of the present invention, the water containing silver ions is sprayed onto the surface of the clothing to make the water containing silver ions exist on the surface of the clothing due to surface tension and adsorbed. The silver or silver compound is preferably adhered to the surface of the garment by drying with. In this case, the liquid can be allowed to remain on the surface of the garment without getting into the garment, so that an antistatic function can be achieved by attaching a smaller amount of metal or metal compound to the garment surface. Can be applied to the surface.

  In the washing machine of the present invention, it is preferable that 0.5 mg or more and 50 mg or less of silver or silver compound is adhered to 1 kg of clothing as a ratio of the adhesion amount of silver or silver compound. In this case, an antistatic function that prevents static electricity generated on the surface of the clothing can be imparted, and the possibility of causing discoloration of the clothing due to adhesion of silver or a silver compound can be reduced.

  In the washing machine of the present invention, the garment preferably contains chemical fibers. In this case, since the chemical fiber has a relatively low water absorption rate and is likely to generate static electricity, the antistatic function can be more effectively imparted to the surface of the clothing.

  As described above, by using the washing machine of the present invention, the antistatic performance of the garment by a simpler method and by attaching a small amount of silver or a silver compound to the surface of the garment compared to the conventional method. Can be increased.

  A method for imparting antistaticity to a fiber structure using the washing machine of the present invention is a method of drying silver on the surface of a fiber structure by drying water containing silver ions on the surface of the fiber structure. Alternatively, a silver compound is attached. Here, the state in which water containing silver ions is present on the surface of the fiber structure is a state in which silver ions in water are electrically attached to the surface of the fiber structure that is negatively charged, Or the state etc. which the water containing silver ion exists and adsorb | sucks by the surface tension on the surface of a fiber structure can be considered.

  The reason why silver is used as a metal in a liquid containing a metal or a metal compound is that silver has the highest electrical conductivity, so that the necessary amount for imparting antistatic properties can be minimized. And less impact on metal allergies. Examples of other metals include platinum, palladium, gold, copper, zinc, iron, nickel, and chromium. As the metal compound, any type of compound having electrical conductivity can impart antistatic properties to the fiber structure.

  Moreover, the reason why ions are employed as the presence form of the metal in the liquid is that a liquid containing a metal or a metal compound can be easily produced.

  As one embodiment of the method for improving the antistatic performance of clothing using the washing machine of the present invention, water as a liquid containing a metal such as silver ions or a metal compound is present on the surface of the fiber structure. After drying, conductive metal particles and the like adhere to the surface of the fiber by drying, so that the charges generated by the offset are neutralized, and the charges are absorbed in the fiber structure by canceling the plus and minus. No longer occurs. It is considered that the surface potential of the fiber structure becomes relatively small due to this.

  Moreover, it is conceivable that the charges accumulated in the fibers are likely to leak due to the action of electricity such as metal particles attached to the surface. This is considered to cause a relatively large amount of charge leakage.

  Generally, the charge amount is obtained by subtracting the leakage amount from the charge generation amount. Therefore, the charge amount is reduced by decreasing the charge generation amount and increasing the leakage amount. In the method for improving the antistatic performance of clothing using the washing machine of the present invention, the amount of electric charge generated in the fiber structure is suppressed by attaching conductive metal particles or the like to the fiber surface using a liquid as a medium. As a result, the charges accumulated in the fibers are likely to leak, and the amount of charge is reduced. As a result, an antistatic function, that is, an antistatic property can be imparted to the fiber structure.

  The method for improving the antistatic performance of clothing using the washing machine of the present invention can be applied to a fiber structure composed of all kinds of fibers such as cloth, woven fabric and non-woven fabric. Fibers are broadly divided into chemical fibers and natural fibers. Examples of the chemical fiber include polyester, nylon, acrylic, polyethylene, polyurethane, acetate, rayon, and cupra. Examples of natural fibers include cotton, hemp, wool (wool) and the like.

  Next, as one embodiment of a method for improving the antistatic performance of clothing using the washing machine of the present invention, the fiber structure is clothing, and water containing silver ions as a liquid containing a metal or a metal compound is used. A method for leaving the hair on the clothing surface after the washing step will be described.

  FIG. 1 is a diagram schematically showing the configuration of the washing machine of the present invention.

  As shown in FIG. 1, a water tub 2 is provided inside an outer tub 1 constituting the washing machine main body in a state of being suspended by four support mechanisms arranged around the water tub 2. A washing / dehydrating tub 3 is provided inside the water tub 2, and a mechanism portion 5 is provided in the outer tub 1 at a position further below the bottom of the water tub 2. The mechanism unit 5 includes a motor 6 and is configured to transmit the drive of the motor 6 to the washing and dewatering tub 3.

  A washing / dehydrating tub 3 is rotatably disposed inside the water tub 2. The washing / dehydrating tub 3 is provided with an agitating portion comprising a pulsator 4 at the inner bottom thereof, and the washing / dehydrating tub 3 and the clutch mechanism are linked to each other or can be rotated independently. Yes. The washing and dewatering tank 3 is configured as a so-called holeless tank having no small holes on the wall surface. Moreover, the side wall surface of the washing and dewatering tub 3 is formed in a tapered shape. Draining at the time of dehydration is performed by water flowing into the water tank 2 from a small hole disposed above the washing and dewatering tank 3.

  The upper surface plate portion 7 is mounted around the upper end opening of the outer tub 1, and an operation panel (not shown) is provided on the upper surface plate portion 7. An exterior part of the upper part of the washing machine is constituted by the operation panel. A laundry input port 8 is formed at the center of the top plate 7. In the outer tub 1, a water level sensor (not shown) for detecting the amount of water in the washing and dewatering tub 3 and a control unit 9 for detecting the input load amount of the laundry are provided.

  When the laundry is put into the washing / dehydrating tub 3 to start the operation and the motor 6 is driven, the rotation drive of the motor 6 is transmitted to the washing / dehydrating tub 3 via the mechanism unit 5 and the washing / dehydrating tub 3 is started. The laundry in the aquarium 3 is stirred. At the time of initial stirring, the load amount in the washing and dewatering tub 3 is determined according to a program preset in the control unit 9, and the water level is determined with respect to the load amount. Then, water supply starts from the water supply port 10 connected to the washing machine, and washing starts. The motor 6 can be dehydrated by continuously rotating the washing and dewatering tub 3 at a high speed via the mechanism unit 5.

  In the washing machine configured and operated as described above, the washing machine is provided with an electrolysis unit 20 using a silver plate as a metal plate as an electrode in a water supply path.

  FIG. 2 is a plan view (A) and a side sectional view (B) showing the electrolysis unit 20 provided in the washing machine 1. The electrolysis unit 20 includes a container 21 made of an insulating material such as synthetic resin and rubber, a liquid inlet 22 at one end of the container 21, a liquid outlet 23 at the other end of the container 21, Two plate-like electrodes 24 and 25 arranged substantially parallel to each other inside, and terminal portions 26 and 27 connected to the electrodes 24 and 25, respectively, are provided. The electrodes 24 and 25 are made of silver. The electrode and the terminal portion may be integrated. In the case where the electrode and the terminal portion are not integrated, it is preferable that the joint portion between the electrode and the terminal portion and the terminal portion are coated with a resin so as not to contact water in order to prevent electrical contact. The metal forming the electrode may be copper, a mixture of silver and copper, or the like instead of silver.

Since the electrolysis unit 20 is configured as described above, for example, water is supplied from the inlet 22 into the container 21 during the water supply in the washing rinse step, and the terminal unit 26 and the terminal unit 27 of the electrolysis unit 20 are supplied. When a voltage is applied between the two, silver ions (Ag ⁺ ) are eluted from the anode into the water in the container 21. Water containing silver ions flows out from the outlet 23 and is supplied into the washing and dewatering tub 3. By performing a rinsing step in the washing and dehydrating tub 3 using water containing silver ions, it is possible to impart antistaticity to clothing or the like that is a fiber structure as a laundry.

  FIG. 2B shows a cross-sectional view when the electrolysis unit 20 in FIG. 2A is cut along a vertical plane. In this example, terminal portions 26 and 27 are provided at the edge portions of the upper surfaces of the electrodes 24 and 25. After supplying water into the washing and dewatering tub 3, it is preferable to incline so that the downstream side becomes lower on the bottom surface of the container 21 so that water does not accumulate in the container 21.

  Tap water is sent to the container 21 of the electrolysis unit 20 in the water supply path by the opening operation of the water supply electromagnetic valve 11, and when the electrolysis unit 20 starts application, electrolysis starts near the electrodes 24 and 25. Water supply is performed by tap water pressure. The electrolysis time is adjusted according to the load of the laundry. Silver ions are added to the water that has passed through the electrolysis unit 20, and water containing silver ions is sent to the washing and dewatering tub 3.

  The operation of the washing machine will be described. The user puts the laundry into the washing and dewatering tub 3, turns on the power switch, selects the processing level to adjust the amount of silver deposited, and then presses the start button. The washing machine detects the load amount of the clothes by the rotation of the pulsator 4 and controls to supply water into the washing and dewatering tub 3 up to the indicated value of the water level sensor with the amount of water corresponding to the amount. After detecting the load of clothing, the water supply solenoid valve 11 is opened by a built-in microcomputer. The tap water is supplied from the water tap through the water supply electromagnetic valve 11 into the washing and dewatering tub 3. Then, the pulsator 4 provided at the bottom of the washing and dewatering tub 3 is reversed in the forward and reverse directions to start washing.

  After completion of the washing process, water added with metal ions by electrolysis is supplied to the laundry subjected to intermediate dehydration. The amount of silver ions at this time is an amount commensurate with the load amount and the processing level determined at the start of washing. For example, when a required amount of silver ions is added so that the silver ion concentration in water becomes 300 ppb with a specified amount of water, application to the electrodes 24 and 25 is stopped, and water supply is continued to the specified amount of water. When the specified amount of water is reached, the laundry distributed in the V shape is loosened from the washing and dewatering tub 3 by the rotating operation of the pulsator 4 provided in the lower part of the washing and dewatering tub 3. After stirring for a certain period of time by the rotational operation of the pulsator 4, the operation of the pulsator 4 is stopped. Then, the state immersed for a fixed time in order to make silver ion act is maintained. At this time, the operation of the washing machine may be stopped completely, but sometimes the washing and dewatering tub 3 may be slowly rotated to notify the user that the washing is in progress.

  After performing the rinsing process for a predetermined time, for example, 10 minutes as described above, draining is performed, and the process proceeds to the final dehydration process. The above processing level is set to a high level, and silver ion water is added before the low-speed rotation dehydration process is performed, so that the amount of silver present on the surface of the clothing is relatively increased. For example, silver ion water having a silver ion concentration of 600 ppb in water is applied to the clothes twice for 40 seconds, and then silver is attached to the clothes at a low speed of 100 rpm for 5 minutes.

  When the clothes after being washed in this manner are dried, 0.5 mg / kg or more of a silver or silver compound per kg is attached to the clothes, so that the silver or silver compound is particularly formed on the surface of the clothes. By being attached, an antistatic function is imparted and static electricity is hardly generated.

  In addition, the garment to which antistaticity is imparted using the washing machine of the present invention reduces the discomfort of the wearer due to static electricity.

  FIG. 3 shows the relationship between the amount of silver or a silver compound adhering to clothing and the surface potential of clothing as one example for confirming the effect of improving the antistatic performance of clothing using the washing machine of the present invention. It is a graph which shows.

  After spraying silver ion water having a silver ion concentration of 600 ppb on the surface of the clothing, the surface potential of the dried clothing was measured.

As clothing, an attached white cloth for dyeing fastness test defined in JIS L0803 was used. Specifically, a white fabric (polyester) in which polyester filament yarns are plain weave, the yarn thickness is 8.3 TEX in both length and width, the yarn density is 210 warp yarns, 191 weft yarns / 5 cm, and the mass is 70 g / m ^2. Cloth) was used.

  The adhesion amount of silver or a silver compound was changed by repeatedly spraying silver ion water onto clothing and drying the clothing.

  The adhesion amount was calculated according to the following formula from the measured spray amount of silver ion water and the weight of the dry cloth.

Adhesion amount (mg / kg) = (Amount of sprayed silver ion water (liter) × 0.6 mg / liter) / weight of dry cloth (kg)
In the measurement test of the surface potential of clothing, the above-mentioned polyester cloth processed on a rubber base is placed, and the surface of the polyester cloth is rubbed with a white cloth (wool cloth) for dyeing fastness test specified in JIS L0803. The surface potential when the polyester cloth was pulled up from the rubber base was measured with a portable surface potential meter. The temperature at the time of measurement was 30 ° C., and the humidity was 60%.

  As a result, as shown in FIG. 3, the surface potential of clothing is increased by spraying silver ion water onto the surface of the cloth and then drying, thereby increasing the adhesion amount of silver and silver compounds to the surface of the polyester cloth. It can be seen that it is possible to lower the value. In general, if the absolute value of the surface potential of the garment is 5 kV or less, the garment will be difficult to cling to the wearer. Therefore, the result shown in FIG. I understand. It is considered that a sufficient antistatic effect can be obtained if the adhesion amount is 0.5 mg / kg or more. However, if a large amount of silver particles or the like adheres, the fiber may be discolored. It is desirable to do.

  Further, after the above-mentioned polyester cloth sprayed with silver ion water having a silver ion concentration of 600 ppb and the above-mentioned polyester cloth sprayed with tap water are respectively rubbed with a wool cloth in the same manner as described above. The surface potential of was measured. As a result, the surface potential of the polyester cloth sprayed with tap water is −15.3 kV, whereas the surface potential of the polyester cloth sprayed with silver ion water is −2.5 kV, and the absolute value of the surface potential is considerably small. The effect of improving the antistatic performance of clothing using the washing machine of the present invention could be confirmed.

  Furthermore, according to the half-life measurement method specified in JIS L1094: 1997, the polyester cloth sprayed with silver ion water having a silver ion concentration of 600 ppb and the polyester cloth sprayed with tap water are halved. The period was measured. As a result, the half-life of the polyester cloth sprayed with tap water is 120 seconds or more, whereas the half-life of the charge amount of the polyester cloth sprayed with silver ion water is 48 seconds. As a result of using it to improve the antistatic performance of clothes, it was possible to confirm a significant leakage effect of charges.

  In addition, after drying the polyester cloth sprayed with the above-mentioned silver ion water and the polyester cloth sprayed with tap water, the pollen (cedar) is uniformly adhered to these cloths, and then these cloths are subjected to a pollen release test. The pollen was released from the cloth by attaching it to the apparatus and applying a predetermined vibration (to the extent that it was lightly removed by hand). By counting the number of pollen before and after the release, the amount (ratio) of pollen falling on the clothing, that is, the decreasing rate of pollen was evaluated. As a result, the decrease rate of pollen in the polyester fabric sprayed with tap water is about 30%, while the decrease rate of pollen is about 60% in the polyester fabric sprayed with silver ion water. The effect of removing pollen was confirmed as an effect of improving the antistatic performance of clothing using a machine. As a result, even if pollen adheres to the surface of the clothes outside the house, the surface of the clothes can be used as long as it has antistatic properties by the method for enhancing the antistatic performance of the clothes using the washing machine of the present invention. As a result, pollen can be easily removed from the house and it is possible to expect the accompanying effect that it is possible to prevent pollen from being brought into the house as much as possible.

  As shown in JP 2001-49541 A, as an effect of improving the antistatic performance of clothing using the washing machine of the present invention, compared with a laminated yarn including a deposited film in which silver ions are deposited by an ion deposition method. Thus, a surface potential having a smaller absolute value can be given to the fiber structure, and a shorter half life of the charge amount can be obtained. As a result, a greater charge leakage effect can be given to the clothing.

  From the results of the above examples, the specific advantages of the method for improving the antistatic performance of clothing using the washing machine as one embodiment of the present invention are summarized as follows.

  1) Since the method for improving the antistatic performance of clothing using the washing machine of the present invention is performed by immersing clothing in silver ion water or spraying silver ion water on clothing, The amount of silver used to give a predetermined antistatic property, that is, the amount of silver or a silver compound necessary to give a predetermined antistatic property can be uniformly deposited. Can be minimized. On the other hand, in the method proposed in the above publication, the conductor can be attached only to the cross section or a part of the surface of the yarn, but the conductor cannot be attached to the entire surface of the yarn. The amount of the conductor necessary for imparting the antistatic property increases.

  2) In the method for improving the antistatic performance of clothing using the washing machine of the present invention, it is only necessary to produce water containing silver ions in order to impart antistatic properties to the clothing, and the water containing silver ions is silver. It can be obtained simply by electrolyzing the plate in water. On the other hand, in the method proposed in the above publication, it is necessary to perform processing in a high vacuum in order to deposit a metal on the surface of the synthetic resin film, and it is difficult to perform the processing in household equipment.

  3) In the method for improving the antistatic performance of the garment using the washing machine of the present invention, the fabric structure is made to be antistatic with respect to the state of the cloth, for example, the state of the woven cloth or the state of the sewn garment. Processing for granting can be performed. On the other hand, in the method proposed in the above publication, it is necessary to perform a treatment for imparting antistatic properties to the yarn state, and the antistatic property to the fabric state as a fiber structure is required. The process for granting cannot be performed.

  In addition, although the said experiment used the polyester fiber which is a chemical fiber as a fiber structure, it is the above even if it uses a chemical fiber other than a polyester fiber, a natural fiber, or a mixed fiber structure of a chemical fiber and a natural fiber. Similar effects can be achieved.

  FIG. 4 is a graph showing the relationship between the number of washings and the amount of silver deposited when the method for enhancing the antistatic performance of clothing using the washing machine described in the above embodiment is implemented.

  As the clothes to be washed, polyester cloth and cotton cloth of the attached white cloth for dyeing fastness test specified in JIS L0803 were used.

  In FIG. 4, “high load” means that a polyester cloth and cotton cloth are washed together (total load weight: about 2 kg), and “low load” means that only a polyester cloth is washed (total load weight: about 2 kg). 200 g). The “silver adhesion amount” that changes with the number of washings is a state in which silver ion water is supplied using the washing machine described in the above embodiment, and is dried after performing a rinsing step and a dehydrating step. The amount of silver adhering to the polyester cloth at the time is shown. Condition “90” means that 28 liters of silver ion water having a silver ion concentration of 90 ppb is supplied to a total load weight of about 2 kg, stirred for 10 minutes, and then dried polyester fabric is dried. Indicates the amount of silver adhesion. Condition "600" is that 28 liters of silver ion water having a silver ion concentration of 300 ppb is supplied to a total load weight of about 2 kg, stirred for 10 minutes, dehydrated, and again the washing and dehydration tank 3 is set to 100 rpm. Polyester dehydrated after supplying silver ion water with a silver ion concentration of 600 ppb for 1 minute (about 3 liters) while rotating at 100 rpm, and continuing rotation at 100 rpm for 5 minutes to spread the silver ion water over the entire load. The amount of silver deposited when the cloth is dried is shown.

  From the results shown in FIG. 4, it can be seen that the amount of adhered silver increases when repeated washing is performed by applying the method for improving the antistatic performance of clothing using the washing machine of the present invention. Moreover, it turns out that the amount of silver adhesion per wash increases by immersing clothing in a relatively high concentration of silver ion water or by stirring in the immersed state. Thereby, the silver adhesion amount to the surface of cloth can also be increased.

  In the experimental results shown in FIG. 4, since a cloth made of 100% chemical fiber, for example, 100% polyester, was used, the amount of silver deposited was about 2.5 mg / kg at the maximum after 5 washings. However, when a garment made of a blended fiber structure, for example, 65% cotton and 35% polyester is rinsed and dehydrated under the above condition “600” and then dried, the number of washings is 5 times. About 9.0 mg / kg, 10 times was about 10.7 mg / kg. Therefore, by changing the silver ion concentration, the load weight of the washing, the condition of the rinsing process, the condition of the dehydration process, or the number of washings, etc., depending on the type of fiber constituting the fiber structure as the laundry object The amount of silver attached can be changed, whereby the amount of silver attached to the surface of the cloth can be changed, and as a result, the antistatic performance imparted to the clothing can be varied.

  Moreover, even if the adhesion amount of silver to the cloth is substantially the same, the antistatic performance imparted to the clothes can be varied as a result by varying the method of applying silver ion water to the cloth.

  Table 1 shows the results of examining whether or not the charging potential (kV) on the surface of the cloth changes by changing the method and time of applying silver ion water to the cloth. Polyester cloth was used as the kind of cloth. As a condition to hang silver ion water on the cloth, bring the clothes directly close to the place where silver ion water is being showered from the water supply port of the washing machine and wet the surface of the clothes with silver ion water. And “when applied for 20 seconds in a shower”, “when applied using a spray (mist)” and “when applied using a spray (liquid)”. The adhesion amount (mg / kg) of silver indicates a calculated value based on the above formula. The charging potential on the surface of the polyester cloth was measured after rubbing with the wool cloth three times. The “mist spray (liquid)” refers to a condition in which the spray nozzle is opened and silver ion water is sprayed onto the surface of the polyester cloth like a water gun.

  From the results shown in Table 1, it is possible to reduce the absolute value of the charged potential on the surface of the polyester cloth and to improve the antistatic performance by applying the silver ion water on the cloth for a long time rather than using a shower for a long time. You can see that In addition, it is understood that the absolute value of the charging potential on the surface of the polyester cloth can be reduced and the antistatic performance can be improved by applying the water in a mist rather than in the liquid state as the condition for applying silver ion water to the cloth. Therefore, even if the adhesion amount of silver to the cloth is almost the same, in a state where a relatively large amount of silver ion water is present on the surface of the cloth, in other words, without allowing silver ion water to enter the cloth, The antistatic performance can be improved by adhering a relatively large amount of silver or a silver compound to the surface of the cloth by drying in a state where a large amount of silver ion water remains on the surface of the cloth. I understand.

  In order to verify the above, the silver or silver compound adhered to the polyester cloth is made to be the same by attaching silver ion water into the cloth and then drying. The adhesion form of the silver or silver compound was examined using the sample A and the sample B to which silver or silver compound was adhered by drying in a state where silver ion water was present on the surface of the cloth.

  For sample A, the pre-washed polyester cloth was washed with a detergent, stirred in silver ion water at a concentration of 300 ppb, dehydrated and rotated at 100 rpm for 6 minutes while applying silver ion water at a concentration of 600 ppb, and finally centrifuged. Dehydrated by force. Sample B was obtained by repeating 7 times drying of a pre-washed polyester cloth by spraying silver ion water having a concentration of 600 ppb with a sprayer. In Samples A and B thus obtained, the adhesion amount of silver or a silver compound was 1.8 mg / kg. The charging potential (kV) on the surface of Sample A was −7.6 to −10.6 kV, and the charging potential (kV) on the surface of Sample B was −2 kV. The charged potential was measured using a handy type static electricity meter (FMX-002, manufactured by Simco) after rubbing the polyester cloth and wool cloth of each sample.

  The surfaces of Sample A and Sample B were evaluated by XPS (X-ray photoelectron spectrometer). Microlab 300-A (manufactured by VG) was used as a measuring apparatus, the light source was Mg-Kα, 1 keV, 20 mA, and the incident angle to the sample was 60 °.

FIG. 5 is a diagram showing an elemental analysis result of silver as a result of evaluating the adhesion form of silver or a silver compound on the surface of a polyester cloth with XPS (X-ray photoelectron spectrometer). 5A shows the XPS analysis result of Sample A, and FIG. 5B shows the XPS analysis result of Sample B. FIG. 5 shows that the presence of silver was not detected in sample A, and the presence of silver was detected in sample B. That is, according to literature data, binding energy values of silver (Ag): to 368.2EV, binding energy value _Ag 2 O oxide of silver: 367.8eV, AgO: since it is 367.4eV, Ag ₂ It has been reported that a peak shift of -0.4 eV occurs in the case of O and -0.8 eV occurs in the case of AgO. In FIG. 5B, the 3d7 peak of silver (Ag), which indicates the binding energy of Ag, is shifted by about −0.4 eV, so that it can be seen that the presence of oxidized silver is detected. On the other hand, in FIG. 5A, it can be seen that no peak indicating the binding energy of Ag was observed. From these, it can be seen that the presence of silver on the surface is not detected in the sample A, and silver or a silver compound is present on the surface in the sample B. By correlating this result with the measured value of the charged potential, it is more likely that the silver or silver compound is deposited by drying with silver ion water present on the surface of the cloth. It can be seen that it can be adhered to the surface of the fabric and the antistatic performance can be enhanced.

  In addition, when applying anti-static properties to clothing that may damage the form and the like when subjected to a washing process (for example, delicate clothing or easily deformed hats), or clothing with higher anti-static properties When the water is applied to the clothes, the clothes are brought close to the place where water having a relatively high silver ion concentration, for example, 600 ppb of silver ion water is supplied from the water supply port of the washing machine, and the surface of the clothes is covered with silver ion water. It is also possible to impart antistatic properties to clothing by wetting. In this case, it is desirable that the wet clothing is lightly dehydrated and then immediately dried.

  It should be considered that the embodiments and examples disclosed above are illustrative and non-restrictive in every respect. The scope of the present invention is shown not by the above embodiments and examples but by the scope of claims, and includes all modifications and variations within the scope and meaning equivalent to the scope of claims.

  According to this invention, the washing machine which can reduce the discomfort of the wearer by static electricity by improving the antistatic performance of clothes can be provided.

It is a figure which shows schematically the structure of the washing machine of this invention. It is the top view (A) and side sectional view (B) which show the electrolysis part with which the washing machine shown in FIG. 1 was equipped. It is a figure which shows the relationship between the adhesion amount of the silver or silver compound to clothing, and the surface potential of clothing as one Example of the method of improving the antistatic performance of clothing using the washing machine of this invention. It is a figure which shows the relationship between the frequency | count of washing and the amount of silver adhesion at the time of implementing the method of improving the antistatic performance of clothing using the washing machine shown in FIG. It is a figure which shows the elemental-analysis result about silver as a result of evaluating the adhesion form of the silver or silver compound to the surface of a polyester cloth by XPS (X-ray photoelectron spectrometer).

Explanation of symbols

  3: Washing and dewatering layer, 20: electrolysis part, 21: container, 24, 25: electrode.

Claims (5)

A washing machine used to increase the antistatic performance of clothing,
Washing and dewatering tank,
Arranged in the water supply path to the washing and dewatering tank, and equipped with an electrolysis part using a silver plate as an electrode,
After the washing process is completed, water containing silver ions is supplied to the laundry in the washing and dehydrating tub through the electrolytic unit, and after rinsing for a predetermined time, draining and before performing the dehydrating process A washing machine characterized in that water containing silver ions is supplied to the laundry in the washing / dehydrating tub through the electrolysis unit to relatively increase the adhesion amount of silver present on the surface of clothing. .   By applying water containing silver ions on the surface of the clothing, the water containing silver ions is made to exist on the surface of the clothing due to surface tension and is adsorbed, and then dried in this state. The washing machine according to claim 1, wherein silver or a silver compound is adhered to the surface.   By spraying water containing silver ions onto the surface of the clothing, the water containing silver ions is made to exist on the surface of the clothing by surface tension and is adsorbed, and then dried in this state. The washing machine according to claim 1, wherein silver or a silver compound is adhered to the surface of the washing machine.   4. The silver or silver compound of any one of claims 1 to 3, wherein 0.5 mg or more and 50 mg or less of silver or a silver compound is attached to 1 kg of the clothing as a ratio of the amount of the silver or silver compound attached. The washing machine described.   The washing machine according to any one of claims 1 to 4, wherein the garment includes chemical fibers.

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