JP2001146610A - Thermal insulation supporter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject supporter excellent in thermal insulation and flexibility, and also having soft touch, relief at sight, and such functions as water repellency, bacteriostaticity and deodorizing capability. SOLUTION: This thermal insulation supporter comprises a thermistor of positive resistance-temperature characteristic having a planar exothermic element, and is characterized by that a fibrous structure or film is used as a substrate constituting the exothermic element, and also the periphery of the exothermic element is coated with a coating material of electrical insulation, and furthermore the periphery of the coating material is covered with a textile fabric.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention has a heat generating function,
It mainly relates to supporters used for keeping hands and feet warm. More specifically, the present invention relates to a heat retention supporter that promotes the floating of blood vessels and facilitates the insertion of a needle in an injection or infusion performed at a medical or nursing care site.

[0002]

2. Description of the Related Art As a passive heat retaining method, there is a method using a thick knitted fabric generally called a supporter.
Insufficient heat retention to float blood vessels in a short time. On the other hand, as an aggressive heat retaining method, a real opening 61-39528
It is known to use a disposable body warmer in a storage bag made of a band, as shown in Japanese Utility Model Application Publication No. 62-129008. This requires no prior preparation,
Although it is considered highly effective because there are no restrictions on facilities,
However, the disposable body warmer has an effective temperature from room temperature to 40.
It takes a long time to raise the temperature to ５０50 ° C., which is not suitable for a medical site where responsiveness is required, and also cannot control the effective temperature. In addition, it has a considerable hardness and feel is hard, and the feeling of wearing by the patient is not good. As other active heat retention methods, there are hot water bottles, red pepper, kotatsu, electric blankets and the like, but hot water bottles, red pepper, and kotatsu are less responsive than disposable warmers and are not preferred. Also,
Although the electric blanket has a quick response to temperature rise, it is not preferable because the wire heating element and the temperature control sensor and the wiring thereof are hard on the texture side. In addition, no consideration is given to measures for electric shock when a liquid such as an injection liquid adheres, which is further undesirable in terms of safety. As described above, the conventional technology satisfies the responsiveness of temperature rise, good wearing feeling, and safety, and also has functions of facilitating storage and care such as water repellency, bacteriostatic properties and deodorant properties. Nothing was found.

[0003]

SUMMARY OF THE INVENTION In view of the background of the prior art, the present invention is not only excellent in responsiveness to temperature rise, safety and good wearing feeling, but also in water repellency, antibacterial property and deodorant property. It is intended to provide a heat retention supporter having a function of facilitating storage and maintenance of the product.

[0004]

The present invention employs the following means in order to solve the above-mentioned problems. That is, in the heat retaining supporter of the present invention, the heating element is formed of a planar positive temperature coefficient thermistor, and a fiber structure or a film is used as a substrate constituting the heating element,
In addition, the periphery thereof is covered with an electrically insulating coating, and the periphery of the electrically insulating coating is further covered with a fiber cloth.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has been made to solve the above-mentioned problems, that is, it is excellent in responsiveness of temperature rise, safety and good feeling of wearing, and is easy to store and maintain such as water repellency, antibacterial property and deodorant property. Eagerly consider a heat retention supporter that also has the function of
The sheet heating element is made of a positive temperature coefficient thermistor, and a fibrous structure fabric or a film is used as a base cloth of the sheet heating element, and further covered with an electrically insulating material, and further, water repellency, antifouling, bacteria control and deodorization. As a result, it has been found that such a problem can be solved all at once as a coated structure formed by coating with a fiber cloth.

Here, the positive characteristic means a positive resistance-temperature characteristic,
In other words, the electrical resistance of the heating element increases as the temperature of the heating element increases, and the electrical resistance of the heating element decreases as the temperature of the heating element decreases. This is referred to as positive characteristic or PTC characteristic. This property is defined as a self-temperature control function and a synonym.

FIGS. 1 and 2 show an embodiment of the heat retaining supporter of the present invention.

In general, the structure of the heating element (heater) of the sheet heating element includes a heating section, a temperature control section, and a safety device section. Furthermore, when the heater portion of the sheet heating element is roughly classified, it can be classified as follows.

1) A sheet or wire formed by uniformly dispersing conductive particles such as carbon black in a thermoplastic resin such as polyester, polyethylene, or polyolefin. Since the particles are in physical contact, conduction is obtained with a small resistance value. The body thermal expansion coefficient of carbon and thermoplastic resin, which are conductive particles, is extremely large for the resin, and the resin has a larger thermal expansion coefficient at or above the glass transition point. It spreads with increasing temperature, and its spread is accelerated above the glass transition point, so that the resistance value increases and a remarkable PTC characteristic (positive resistance −
Temperature characteristic), the current stops flowing around the heating element around that temperature, and it has a self-temperature control characteristic. Products that make use of this include electric blankets and hot carpets.

2) By adding the special semiconductor fine particles and the carbon particles to the thermoplastic resin described in the above item 1, a heating element having a higher PTC characteristic than the above-mentioned carbon particles alone can be obtained. It can have temperature control characteristics. Utilizing this, it is used for floor heating, road snow melting heaters, and anti-freezing heaters for tanks and piping.

3) A mixture of conductive particles mixed with a silicone resin or frit glass, mixed with an organic vehicle, applied on a heat-resistant insulating substrate, and baked. For example, Japanese Patent Publication No. 58-159
No. 13 discloses the contents of the publication,
Graphite powder, organic solvent, silicone resin varnish
A method is described in which a fluidity modifier is mixed, coated on a heat-resistant insulating substrate, and baked at 250 to 450 ° C. for 3 hours to produce a sheet-like heating element having a surface temperature of 200 to 360 ° C. It is shown that it can be made, and it is specified that the stability of the resistance value is good.

4) The fired body itself is a heating element, and P
Barium titanate-based devices having TC temperature characteristics (positive resistance-temperature characteristics) have a unique temperature resistance characteristic in which the resistance value rises extremely at temperatures above the Curie point of the device (rapid temperature change). And its Curie point can be controlled from room temperature to about 300 ° C. by partially replacing barium in barium titanate with strontium, calcium or lead. For this reason, it is widely used for various heat sources such as a washing dryer, a futon dryer, and a hot air heater.

5) A thin stainless steel or aluminum thin film formed on an insulated aluminum plate or enameled substrate by etching or mechanical pressing to form a thin line-width pattern, and then formed of silicone resin or inorganic adhesive. The one that was attached with is used as an auxiliary heater for digging kotatsu.

6) A sheet heater having no PTC characteristics obtained by coating a polyester film or the like with a resin such as polyurethane to which conductive carbon particles are added and drying the same is used for an electric blanket or the like. I was

7) There is also a heater in which a conventionally used nichrome wire is sewn to a fabric.

8) A PT in which the core yarn is made of a spun yarn of polyester and the circumferential portion (sheath) is made of a resin containing conductive carbon particles.
There is a sheet heating element woven by using a thread heating element having no C characteristic as a weft yarn at the time of weaving, and has been used for an electric blanket, a health insulation mat, a car seat insulation mat and the like.

As described above, the mechanism of the heater can be classified.

In the present invention, the heat generating section described in the above item 1 or 2 is preferably used in view of flexibility and soft touch, and furthermore, simplification of a temperature control section and a safety device section is easy. Among such planar heating elements, those using a fibrous structure such as a flexible woven or knitted fabric or a nonwoven fabric or a film as a substrate are preferably used as the supporter of the present invention.

Since the heat retaining supporter of the present invention is used while being wrapped around the legs and arms of the body, the heating element has a basis weight of 150 to 500 g / m ² and a size of 100 to 2000 c.
Those having a range of m ² are preferably used. As the shape,
The rectangle is good, and the ratio of vertical / horizontal is 1: 1.5 ~
A range of 1: 5 is preferred.

When a fibrous structure is used as the heating element base fabric, it is preferable to use a material which is impregnated with a substance serving as a heating element or coated on one or both sides. As an example, what is shown in FIG. 3 is a schematic cross-sectional view of a woven fabric impregnated with a heating element.

When a film is used as the heating element base fabric, one obtained by coating a substance to be a heating element on one side is preferably used. As an example, FIG. 4 shows a schematic cross-sectional view in the lateral direction.

Among such planar heating elements, a planar heating element obtained by impregnation or coating generates less eddy current due to alternating current than a linear heating element, so that almost no electromagnetic waves are generated. It does not occur and has less adverse effects of electromagnetic waves on humans, which is extremely advantageous, especially for use in medical settings.

As the fiber structure used for the substrate in the present invention, any of ordinary natural fibers, semi-synthetic fibers and synthetic fibers can be used, or a mixture of natural fibers and synthetic fibers may be used. Among these, the single fiber fineness is particularly 0.1 to
A woven or knitted fabric or a nonwoven fabric mainly composed of synthetic fibers in the range of 6.6 dtex is preferably used. Among them, those composed of at least one selected from polyester fibers and polyamide fibers are more preferably used.

As such polyester fibers, polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, polyhexamethylene terephthalate and the like are preferably used. As the third component, isophthalic acid, 5-sulfoisophthalic acid and the like are copolymerized. Can also be used. Further, as the polyamide fiber, nylon 6, nylon 66, nylon 610, nylon 12, and the like are preferably used.

The fiber fabric used for coating in the present invention is:
From the viewpoint of improving the wiping property of dirt such as an injection solution or blood and reducing the adhesion of dust, a surface form with little unevenness is preferable, but is not limited thereto. From the viewpoint of a feeling of wearing, a fabric having nap is preferable, but nap having long hair is not preferable because dirt is less likely to be wiped off, dust tends to adhere, and it is difficult to remove.

Since such a fiber cloth easily penetrates water, a cloth having water repellency is preferably used from the viewpoint of preventing penetration of water-based dirt and preventing leakage of electricity. The term "a fiber fabric having water repellency" refers to a fabric having a performance of a water repellency of 70 points or more measured according to JIS L-1092.
A known process may be used as the water repellent process for imparting such water repellency. In order to provide durable water repellency, processing using a fluorine-based water repellent in combination with a melamine compound, an isocyanate compound or the like is preferably employed.

As the fiber fabric of the present invention, a woven or knitted fabric having antibacterial properties is preferably used. Here, that the fiber cloth has antibacterial properties means one having a certain level or more of antibacterial properties in the antibacterial evaluation method described later. As such antibacterial processing, normal antibacterial processing may be used. As an example,
A method in which an inorganic antibacterial agent such as silver, copper or zinc is kneaded during the spinning of synthetic fibers, and a post-processing method in which an organic antibacterial agent represented by a quaternary ammonium salt is applied by spraying or padding. Is preferably employed. On the other hand, a method in which a pyridine-based antibacterial agent having a specific molecular weight is exhausted into fibers by dry heat treatment or wet heat treatment is also preferably employed. The unified test method was adopted for the evaluation method of antibacterial properties, and MRSA clinical isolates were used as test cells.

As the fiber cloth of the present invention, a cloth having a deodorizing property is preferably used. The fact that the fiber cloth has a deodorizing property refers to a processed cloth having a deodorizing effect on undeodorized unprocessed products, and the term "deodorizing" refers to a state in which the odor does not easily adhere to the woven or knitted fabric itself (the effect of preventing odor). And / or means that the odor of the atmosphere is reduced.

As the deodorizing process, specifically, for example, a deodorant is kneaded into a yarn, applied in a spinning process, and applied at the time of dyeing and after dyeing. As a deodorant, an inorganic deodorant such as activated carbon, silica, zeolite, and calcium phosphate. An amine compound, an organic deodorant having a carboxylic acid group or a sulfonic acid group, an anatase type titanium oxide having a photocatalytic function, or the like can be used.

As the fiber cloth of the present invention, a cloth having antifouling properties is preferably used. Here, the term “fiber cloth having antifouling properties” refers to a processed cloth in which dirt hardly adheres to an antifouling unprocessed product and dirt is easily removed during washing. As a specific antifouling method, for example, a method of treating a fiber cloth with a water and oil repellent comprising a fluorine compound or a silicone compound, or a method of treating the fiber cloth with a hydrophilic resin such as polyethylene glycol is preferably used. A method of treating a dark stain in the atmosphere with a processing agent having a strong inorganic property such as a modified organosilicate is preferably used. These means can select and use the most suitable processing agent and processing method according to the type of dirt.

It is preferable that the fiber fabric of the present invention is removably attached. Here, that the fiber cloth is detachably attached means that it can be easily separated from the heating element. Specifically, the release portion is provided so as to be closed with a fastener, a hook-and-loop fastener, a button, a hook, or the like. By such means, the fiber fabric (cover) can be easily removed by hand, and washing can be easily performed.

[0032]

Next, the present invention will be described in more detail with reference to examples. First, the following methods were used for performance and quality evaluation in the examples. (Washing) Automatic reversing spiral electric washing machine VH-3410
(Manufactured by Toshiba Corporation) and a weak alkaline synthetic detergent (JI
S K 3371; weakly alkaline, 1 type) 0.2%, temperature 40 ± 2 ° C., bath ratio 1:50, washing by strong inversion for 5 minutes,
Thereafter, the operation of rinsing for 2 minutes while draining and overflowing was repeated twice, and this was defined as one washing. (Evaluation of deodorizing property by detection tube method) 50 containing 10 g of sample
Initial concentration 200ppm in 0ml polyethylene container
And sealed after leaving for 1 hour, and the residual ammonia concentration was measured with a gas detector tube.

In the same manner, acetaldehyde 200 pp
After m-1 hour. The residual gas concentration after 60 ppm of methyl mercaptan for 3 hours was measured. (Antibacterial evaluation method) The evaluation method employed a unified test method, and the test cells used were clinical isolates of Staphylococcus aureus. The test method was as follows. The test bacteria were poured into a sterilized test cloth, the number of viable bacteria after culturing for 18 hours was counted, and the number of bacteria relative to the number of cultured bacteria was obtained.

Under the condition of log (B / A)> 1.5,
g (B / C) was defined as the difference in the increase / decrease in the number of bacteria, and 2.2 or more was regarded as a pass.

Here, A is the number of bacteria recovered and dispersed immediately after inoculation of the unprocessed product, B is the number of bacteria recovered and recovered after 18 hours of cultivation of the unprocessed product, and C is the number of bacteria recovered and recovered after culturing the processed product for 18 hours. Indicates the number of bacteria. (Evaluation of antifouling property / removal of heavy oil) A test piece of 10 × 10 cm was placed on a glass plate with its surface facing up, 0.1 ml of heavy fuel oil B was dropped on the center of the test piece, and a glass plate was further placed thereon. Is placed, and a load of 200 g is further applied and left for 1 minute.
Remove the load and the glass plate, transfer the test piece onto the filter paper, cover it with tissue paper, apply a roller with an address printing roller from above, repeat until the filter paper and tissue paper are clean. The test piece is left for 12 hours, and then washed for 5 minutes under the above-mentioned washing conditions. Transfer the test piece and additional cloth to the centrifugal dehydrator attached to the washing machine,
After spin-drying for about 30 seconds, it is again transferred to a washing tub filled with normal-temperature water and washed for 2 minutes while overflowing the water. This operation is repeated twice. Take out the test piece without squeezing, gently press it with filter paper, drain the water, and air dry horizontally. The lightness (L value) of the contaminant-adhered portion of the test piece after washing was measured using a multi-source spectrophotometer (CM-3700d) manufactured by Minolta Co., Ltd. The larger the L value, the higher the cleaning property and the better the antifouling property. Example 1 Both a warp yarn and a weft yarn were made of polyethylene terephthalate yarn of 110 decitex and 48 filaments, and copper wires were simultaneously woven on both sides (ears) as electrodes and woven with a plain weave. The basis weight at this time was 150 g / m2. ^{Was 2} . Next, a conductive carbon black having an average particle size of 15 μm was added to an ethylene vinyl acetate copolymer as a planar heating element resin,
A barium titanate-based element having a Curie temperature of 62 ° C. having characteristics was kneaded, and coating was performed on both surfaces of the above-described woven fabric. The obtained heating element had a basis weight of 260 g / m ² and a size of 14 × 39 cm. Thereafter, a polyethylene film having a thickness of 70 μm as an insulating coating was formed in a bag shape and completely sealed by fusion to obtain a waterproof process. FIG. 5 shows a lateral cross section in this state. Next, a voltage controller was installed for temperature control, and the plug was used for 100 V (AC).
A three-stage double-sided circular knitted fabric was knitted using a polyethylene terephthalate false-twisted yarn of 110 decitex and 48 filaments as the covering fiber woven or knitted fabric. The basis weight of this knitted fabric was 230 g / m ² . Next, refining, drying and intermediate setting were carried out by a conventional method to dye a pale pink color. The knitted fabric was sewn into a bag having a size of 14 × 39 cm, and one side of 40 cm was zippered so as to be detachable, thereby producing a heat retaining supporter.

As a result of a temperature rise test of this heat retaining supporter, the temperature was raised to 60 ° C. in about 3 minutes and stabilized. Further, as a result of a temperature rise test in a completely adiabatic state, the temperature was not raised by 60 ° C. or more, and the temperature was stable, and PTC characteristics were obtained. When actually used, it felt warm immediately because of the rapid heating rate, and had a good far-infrared effect and warmed from the core of the body as if using a rubber hot water bottle. Example 2 As a substrate, a 70 μm-thick polyester film was coated with the planar heating element resin used in Example 1 and dried.
Matured. Further, sandwiching was performed with a polyester film having a thickness of 70 μm. At this time, electrodes were used on both sides. FIG. 6 shows a transverse cross section in this state. The basis weight of this heating element is 270 g / m ² and the size is 14 × 39 cm.
I made it. Next, a voltage controller was installed for temperature control in the same manner as in Example 1, and the plug was used for 100 V (AC).

As the fiber woven or knitted fabric for covering, one having a surface made of nap fibers was used. As a production method, a single-nap knitted knitting was used, in which the pile yarn was composed of polyethylene terephthalate yarn having 110 dtex and 48 filaments, and the ground yarn was composed of polyethylene terephthalate yarn having 84 dtex and 36 filaments. Next, the pile length was cut to 1.5 mm using a shearing machine, brushed with a needle cloth, and heat-set for greige. Next, after dyeing in pale blue with a liquid jet dyeing machine, hair raising was performed with a lazing machine. The resulting product was a velor-like standing knitted fabric having a basis weight of 380 g / m ² . Using this cloth, the same 15 × 40 c as in Example 1 was used.
sewn into a bag of size m.
A heat retaining supporter was prepared using one side of the cm as a fastener. This warm supporter has a very soft feel,
There was a sense of depth in the color, and it was a peace of mind that I could not imagine as a medical device. Example 3 Using the sheet heating element and the insulating coating used in Example 1,
Further, as the covering fiber cloth, a cloth made of nap fibers having an extremely fine surface was used. As a production method, a sea-island type polymer array fiber having an island / sea component ratio of 50/50, a single-fiber fineness of 10 decitex, and 36 islands composed of polyethylene terephthalate as an island component and polystyrene as a sea component, and having 36 islands is melt-spun and then plied. Thus, an undrawn tow was produced. The unstretched tow is stretched 3.0 times in a liquid bath at 80 ° C., passed through a crimper to give a crimp of 13 peaks / inch, applied with a silicone-based oil agent, cut into a cut length of 51 mm, and cut into raw cotton. Was made. The raw cotton was passed through a card and a cross wrapper to form a web, and then a needle punch of 3500 / cm ² was performed to form a nonwoven fabric sheet. The basis weight of this nonwoven fabric sheet is 604 g / cm ² and the apparent density is 0.422 g / cm ² .
It was cm ^3. Next, this nonwoven fabric sheet was heated at 90 ° C. with a 12% aqueous solution of a 15% partially saponified polyvinyl alcohol.
For 3 minutes to perform heat shrinkage and gluing at the same time, followed by drying. Next, polystyrene as a sea component was extracted and removed in a trichlene bath and dried.

Next, 25% of the polyether polyurethane
The nonwoven fabric sheet is impregnated with an impregnating liquid composed of 52% by weight of a DMF solution and 48% by weight of DMF, and then immersed in a 20% aqueous solution of DMF, coagulated, washed in hot water to completely extract DMF, and then dried. .

After that, the obtained sheet was sliced into two sheets, and naps were formed on both the non-sliced surface and the sliced surface by a buffing machine using a sandpaper.

Next, the napped sheet is prepared using a disperse dye,
Liquid dyeing at 125 ° C. for 60 minutes, basis weight 220 g / m ² ,
A pale gray suede artificial leather having an apparent density of 0.251 g / cm ³ was obtained. At that time, the single-fiber fineness was 0.04 dtex, and the amount of the attached polyurethane was 35% by weight. This fabric is sewn into a bag of the same size of 15 × 40 cm as in Example 1 and is 40 cm so as to be detachable.
Was used as a zipper to produce a heat-retaining supporter. This heat retaining supporter had a very soft suede touch feel, a deep color and a sense of calm, and had a low slippage and high fit when worn. Example 4 Using the sheet heating element and the insulating coating used in Example 1,
Further, as the coating fiber cloth, a cloth having water repellency was used.
As a production method, a polyethylene terephthalate false twisted yarn of 84 decitex 36 filaments was used as a warp yarn, and
Polyethylene terephthalate false twisted yarn having 67 decitex and 48 filaments was used for the weft yarn and woven with plain weave. Next, refining, drying, and intermediate setting were performed by a conventional method, and the product was dyed a pale pink. At this time, the basis weight was 190 g.
/ M ² . 20 g of this woven fabric was Asahigard AG-740 (Meisei Chemical Industry Co., Ltd.) which is a fluorine-based water repellent.
/ L aqueous solution and squeezed with a mangle. The pickup rate at this time was 90%. Next, drying was performed at 130 ° C. for 3 minutes, and then heat treatment was performed at 180 ° C. for 1 minute. As a result of evaluating the water repellency of this cloth by the test method (spray method) specified in JIS L-1079 after no washing and after 20 times of washing,
The score was 100 without washing and 80 after 20 washes.
This fabric was sewn into a bag having the same size of 15 × 40 cm as in Example 1 and one side of 40 cm was zippered so as to be detachable, thereby producing a heat retaining supporter.

The obtained heat retaining supporter has a very high water repellency in practical use, so that when water is spilled, it can be easily treated and convenient. The temperature characteristics of this heat retaining supporter were comfortable to the body as in Example 1. Example 5 Using the sheet heating element and the insulating coating used in Example 1,
Further, an antibacterial fabric was used as the covering fiber cloth. As the production method, the intermediate set finished fabric before dyeing used in Example 4 was used, and in order to impart antibacterial properties, a high pressure liquid jet dyeing machine was used, the bath ratio was 1:15, and the colloidal antibacterial agent 2 was used. 1-pyridylthiol-1-oxide zinc
% Omf, 0% and 5% omf of a gray disperse dye and a dyeing aid were added thereto, adjusted to pH 5, and treated at 130 ° C. for 45 minutes according to a conventional method of dyeing. After treatment,
After washing with water and drying, a gray antibacterial fabric was obtained. As a result of evaluating the antibacterial properties, the difference in the number of bacteria increased / decreased without washing was 4.8, and the washing was 20.
After the test, it was 4.5, which was a pass level. This fabric was sewn into a bag having the same size of 15 × 40 cm as in Example 2, and one side of 40 cm was zippered so as to be detachable, thereby producing a heat retaining supporter. The temperature characteristics of the obtained heat retaining supporter were comfortable to the body as in Example 1. Example 6 Using the sheet heating element and the insulating coating used in Example 1,
Further, a fiber fabric having a deodorizing function was used as the covering fiber cloth. As the production method, using the dyed fabric used in Example 4, an aqueous dispersion slurry of a composite oxide of titanium and silicon (SX-T1: manufactured by Nippon Shokubai Co., Ltd.) having a photocatalytic function (solid content: 20 %) 1 part, silicone resin BY
22-826 (manufactured by Toray Dow Corning Silicone Co., Ltd.), using a working liquid consisting of 2 parts of methyl silicate and 96 parts of water, immersing the dough in the working liquid and squeezing it with a mangle, Was 90%. Next, drying was performed at 130 ° C. for 3 minutes, and then heat treatment was performed at 170 ° C. for 1 minute. The same 15 × 40c as in Example 1 using this cloth
sewn into a bag of size m.
A heat retaining supporter was prepared using one side of the cm as a fastener.

As a result of measuring the deodorizing property of this heat retaining supporter, the ammonia-deodorizing rate was 55% for the dyed fabric (without processing). Acetaldehyde 38%. Ammonia deodorization rate of the photocatalyzed fabric was 30% with methyl mercaptan 30%.
00%. Acetaldehyde 82%. Methyl mercaptan was 85%. The deodorizing properties of tobacco were also evaluated. 2. Dyed fabric (no processing), atmosphere deodorization is 3.
Five points and odor were 4.0 points. The atmosphere of the photocatalyst-treated fabric was 1.8 points and the odor was 1.6 points, which clearly showed the deodorizing effect. The antibacterial properties were also evaluated. As a result, it was 0.6 for the dyed fabric (no processing) and 4.0 for the photocatalyzed fabric, which clearly showed an antibacterial effect. Using this dough, the same 15 × as in Example 1
A 40 cm-sized bag was sewn together, and one side of the 40 cm was zippered so as to be detachable, thereby producing a heat retaining supporter. The temperature characteristics of the obtained heat retaining supporter were comfortable to the body as in Example 1. Example 7 Using the planar heating element and the insulating coating used in Example 1,
Further, a fiber fabric having antifouling properties was used as the covering fiber cloth. As a manufacturing method, using the cloth after dyeing used in Example 4, a working fluid (water-soluble) was prepared according to the following formulation,
The dough was immersed therein and squeezed with a mangle. The pickup rate at this time was 90%. Next, drying was performed at 130 ° C. for 3 minutes, and then heat treatment was performed at 180 ° C. for 1 minute.

Water-repellent and antifouling agent: Asahigard AG-930 50 g / l (manufactured by Meisei Chemical Industry Co., Ltd.) Crosslinking agent: Sumitex Resin M-3 3 g / l (manufactured by Sumitomo Chemical Co., Ltd.) Catalyst: Sumitex Accelerator ACX 2 g / l (manufactured by Sumitomo Chemical Co., Ltd.) Using this fabric, the same bag as in Example 1 having a size of 15 × 40 cm was sewn, and one side of 40 cm was zippered so as to be detachable, and used for a heat retaining supporter. The dough was made. As a result of measuring the antifouling property of this cloth, it was 63 for the dyed cloth (no processing) and 83 for the cloth subjected to the antifouling processing, and it was found that the cloth had a clear antifouling effect. This fabric was sewn into a bag having the same size of 15 × 40 cm as in Example 1 and one side of 40 cm was zippered so as to be detachable, thereby producing a heat retaining supporter. The temperature characteristics of the obtained heat retaining supporter were comfortable to the body as in Example 1. Comparative Example 1 A linear heating element having no PTC characteristics was prepared using a polyester spun yarn # 20 double yarn as the core yarn and a urethane resin containing conductive carbon particles in the circumferential portion (sheath). Next, weaving was performed with a plain weave. At this time, a polyester spun yarn No. 10 single yarn was used for the warp yarn, and a polyester spun yarn No. 20 twin yarn and the above-mentioned filamentous heating element were used for the weft yarn. The copper wire was woven at the same time. The basis weight of this heating element was 280 g / m ² and the size was 15 × 40 cm. Thereafter, a polyethylene film having a thickness of 70 μm as an insulating coating was formed in a bag shape and completely sealed by fusion to obtain a waterproof process. FIG. 7 shows a vertical cross section in this state. Next, add 6 normal thermostats
A controller was installed for temperature control, the temperature was set to 60 ° C., and the plug was for 100 V (AC). The knitted fabric used in Example 1 as the fiber woven knitted fabric for covering was sewn in the same bag shape of 15 × 40 cm as in Example 1 and one side of 40 cm was zippered so as to be detachable. As a result of a temperature rise test of this heat retaining arm band, the temperature was raised to 60 ° C. in about 6 minutes, and although it was stable, the responsiveness was poor. In addition, as a result of a temperature rise test in a completely insulated state, 6
Since the temperature rose from 0 ° C. to 75 ° C., actual wearing became impossible. When actually used, the feeling of warming after heating was higher than that of Example 1. However, the wiring for the thermostat hit the skin in a rough manner, giving a strong sense of incongruity, and it was hard to say that it was a soft touch.

[0044]

According to the present invention, in addition to having an unprecedented responsiveness to temperature rise, it is excellent in safety and good feeling of wearing, and furthermore, it has excellent storage and storage properties such as water repellency, antibacterial property and deodorant property. It is possible to provide a heat retention supporter having a function of facilitating care.

[Brief description of the drawings]

FIG. 1 is an example of a heat retaining supporter.

FIG. 2 is an example of a heat retaining supporter.

FIG. 3 is a schematic cross-sectional view of a woven fabric impregnated with a heating element.

FIG. 4 is a schematic cross-sectional view of a film in which a heating element is coated.

FIG. 5 is a schematic lateral cross-sectional view of the heat retaining body for the heat retaining supporter used in Example 1.

FIG. 6 is a schematic cross-sectional view of a heating element for a heat retaining supporter used in Example 2;

FIG. 7 is a schematic vertical cross-sectional view of a heating element for a heat retaining supporter used in Comparative Example 1.

[Explanation of symbols]

 1: Planar heating element 2: Woven knitted fabric for coating 3: Fabric 4: Planar heating element resin 5: Film 6: Electrode 7: Thread heating element

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A41D 31/00 501 A41D 31/00 501Z 502 502B 502C 502F 502N 502Q 503 503E 31/02 31/02 J

Claims (11)

[Claims] 1. A heating element comprising a planar positive temperature coefficient thermistor, wherein a fibrous structure or a film is used as a substrate constituting said heating element, and its periphery is covered with an electrically insulating coating. A heat insulating supporter, wherein the periphery of the electrically insulating coating is covered with a fiber cloth. 2. The sheet-like heating element has a basis weight of 150 to 500.
insulation supporter according to claim 1, wherein a g / m ^2. 3. The planar heating element has a size of 100-2.
3. The heat retaining supporter according to claim 1, wherein the thickness of the heat retaining supporter is 000 cm ² . 4. The fiber structure has a single yarn fineness of 0.1 to 6.
The heat retaining supporter according to any one of claims 1 to 3, wherein the heat retaining supporter is made of synthetic fibers in a range of 6 dtex. 5. The heat retention supporter according to claim 1, wherein said fiber cloth is made of a woven or knitted fabric. 6. The heat retention supporter according to claim 1, wherein the fiber cloth has water repellency. 7. The heat retention supporter according to claim 1, wherein the fiber fabric has antibacterial properties. 8. The heat retention supporter according to claim 1, wherein the fiber fabric has a deodorizing property. 9. The heat retention supporter according to claim 1, wherein the fiber cloth has an antifouling property. 10. The heat retention supporter according to claim 1, wherein the fiber cloth is detachably attached. 11. The heat retaining supporter according to claim 1, wherein the heat retaining arm band is in a temperature range of 40 to 70 ° C. when used.