JP4256325B2 - Thermal storage fabric - Google Patents

Description

  The present invention relates to a fabric having heat storage properties.

  Conventionally, in order to improve the heat retention of clothing, the fabric has a multi-layer structure, and cotton or feathers are sandwiched inside, but recently, by adding a heat storage material to the fiber A technique for obtaining a relatively thin and warm fabric has been proposed (see, for example, Patent Document 1).

The above heat storage material has a melting point near room temperature, and when it changes from a temperature range above the melting point to a temperature range below the melting point, it changes from a liquid phase to a solid phase and generates heat of solidification to generate `` cooling ''. In the above-mentioned Patent Document 1, n-paraffin or the like is given as such a heat storage material, and a microcapsule encapsulated with a wall material such as polyurethane is attached to the fiber. To hold.
JP-A-5-156570

  However, as described in the above-mentioned Patent Document 1, the heat storage microcapsules are adhered to and held on a fiber structure such as a woven fabric or a knitted fabric through a resin binder, thereby obtaining a heat storage effect of a certain level or more. If it tries to do so, the fiber structure must be thickened to increase the amount of heat-storable microcapsules, and there is a problem in that the original feel and moisture permeability of the fabric are impaired. In addition, since the temperature distribution differs depending on the part of the fiber structure, there is a problem that a uniform heat generation effect cannot be obtained at any part, and bias tends to occur.

  The present invention has been made in view of such circumstances, and in fabrics such as woven fabrics and knitted fabrics, heat storage properties are imparted without impairing the original feel and moisture permeability of the fabric, and has excellent heat retaining properties. Another object is to provide a heat storage fabric.

To achieve the above object, the present invention is, basis weight 30 to 100 g / m ^2, Ri Do from the set fibrous structure thickness 0.05 to 0.5 mm, a fabric that is used as a clothing lining In addition, heat-storing microcapsules containing a conductive conjugate fiber and encapsulating a paraffinic material having a phase transition point of 10 to 35 ° C. with a resin material are dispersed and attached via a resin binder, and the surface resistance is , you heat storage resistant fabric that is set to ^{10 5} ~10 10 Ω / sq and the first aspect.

Further, the present invention is its inter alia, in particular, heat storage of the total deposition amount of the heat storage microcapsules and resin binder, the dry weight of the fiber structure to be set to 0.3 to 12.0 wt% the fabric was a second aspect, among them, in particular, paraffin-based material of the heat storage microcapsules Le is, octadecane, heptadecane, a third aspect of the heat storage fabric is either a polytetramethylene ether glycol To do.

In the present invention, among them, in particular, the fiber structure uses multifilament yarns mainly composed of non-conductive fibers as warps and wefts, and a multi-layer composed of conductive composite fibers in the meantime between them. fabric der Ru heat storage fabrics woven filament yarn to a fourth aspect.

That is, the heat storage fabric of the present invention is composed of a fiber structure containing conductive composite fibers and given specific conductivity, and has appropriate heat conduction characteristics. The temperature rises and the heat storage is demonstrated. On the other hand, in an environment changes from high temperature to low temperature, to wear by applying fabric garment lining, because heat from the human body is transmitted to the entire garment, the more when the temperature rise is not performed rapidly the temperature lowered, A certain heat retention effect can be obtained. And since the basis weight is set to 30 to 100 g / m ² and the thickness is set to 0.05 to 0.5 mm , it has a light and supple texture, and has an excellent heat retaining effect, so it has very excellent characteristics as a lining. It has.

In particular, the heat storage resistant fabrics of the present invention, the fibrous structure, and paraffinic material phase transition point 10 to 35 ° C. The heat storage microcapsules formed by sealing a resin material is dispersed attached via a resin binder Therefore, especially, in the environmental change from a high temperature to a low temperature, Ki out to delay the temperature lowered by the generation of heat of solidification of the heat storage microcapsules, it is possible to obtain a more excellent thermal effect.

  Further, among the heat storage fabrics of the present invention, in particular, the total adhesion amount of the heat storage microcapsules and the resin binder is set to 0.3 to 12.0% by weight with respect to the dry weight of the fiber structure. In spite of the heat insulation effect due to the heat storage due to the synergistic effect with the conductive conjugate fiber, the amount of the heat storage microcapsules per se is relatively small, and the fabric texture is not impaired. Have.

Among the heat storage fabrics of the present invention, those using any one of octadecane, heptadecane, and polytetramethylene ether glycol are particularly preferable as the paraffinic material of the heat storage microcapsules.

In particular, the fiber structure is a woven fabric in which multifilament yarns mainly made of non-conductive fibers are used as warps and wefts, and multifilament yarns made of conductive composite fibers are woven at a predetermined interval therebetween. Has moderate heat conduction characteristics and heat storage properties, and when heat is applied to the fabric, the temperature rises rapidly and exhibits heat storage properties. On the other hand, in the environmental change from a high temperature to a low temperature, it is possible to delay the temperature lowered by the generation of heat of solidification of the heat storage microcapsules, it is possible to obtain a very good insulating effect.

  Next, the best mode for carrying out the present invention will be described.

  FIG. 1 shows a heat storage fabric according to an embodiment of the present invention. This heat storage fabric is made of plain woven fabric, and heat storage microcapsules (not shown) are dispersedly attached to the entire fabric via a resin binder.

  As the warp and weft of the woven fabric, a multifilament yarn (hereinafter referred to as “non-conductive yarn”) 1 mainly composed of non-conductive fibers is used. A multifilament yarn (hereinafter referred to as “conductive yarn”) 2 made of a composite fiber is woven.

  The non-conductive fibers constituting the non-conductive yarn 1 are not particularly limited, and polyamides such as 6 nylon, 12 nylon, and 66 nylon and copolymers thereof, polyolefins such as polypropylene and polyethylene, and co-polymers thereof. Synthetic fibers made of fiber-forming polymers such as polyester, polyethylene terephthalate, polybutylene terephthalate, polytetramethylene terephthalate and copolymers thereof, recycled fibers such as viscose rayon, semi-synthetic fibers such as cellulose acetate, etc. An appropriate one can be used. These may be used alone or in combination of two or more. In that case, it may be used as a blended yarn or the like, or may be a woven fabric of two or more types of yarn. However, it is preferable to use a synthetic fiber in view of balance with the conductive yarn 2 and handleability, and it is particularly preferable to use a polyester fiber from the viewpoint of weather fastness and dimensional stability.

  The fineness of the non-conductive yarn 1 composed of the non-conductive fibers is usually set to 11 to 330 dtex in consideration of the adhesiveness of the heat storage microcapsules described later, although depending on the application and the form of the fabric. When applied to thin fabric such as a lining, it is preferably 11 to 110 dtex.

  On the other hand, the conductive conjugate fiber constituting the conductive yarn 2 is a conjugate fiber in which a conductive layer made of a polymer containing conductive particles and a non-conductive layer made of a fiber-forming polymer are joined.

  The conductive particles may be any of those conventionally used as a conductivity imparting agent. For example, furnace-based carbon black, carbon nanotube, ketjen black, graphite, silver, copper, tin Conductive metal powders such as nickel and aluminum, fine powders of conductive metal oxides such as tin oxide, zinc oxide, ITO and ATO, and ceramic fine powders such as titanium oxide and conductive metals such as ITO and ATO White conductive powder coated with a conductive metal oxide. These may be used alone or in combination of two or more. Of these, white conductive powder obtained by coating ceramic fine powder such as titanium oxide with conductive metal oxide such as ITO or ATO is preferable from the viewpoint of design.

  The size of the conductive particles is preferably set so that the average particle diameter is 3 μm or less, especially 1 μm or less when the shape is granular. Moreover, when the shape is elongate, the thing whose long axis is 3 micrometers or less and whose aspect-ratio is in the range of 10-200 is suitable. That is, if the conductive particles are larger than the above range, yarn breakage is likely to occur when the composite fiber is spun, and even if the yarn is not broken, voids may be generated in the fiber and the physical properties of the fiber may be impaired. Because.

  And as a polymer which contains the said electroconductive particle, all well-known thermoplastic polymers are mention | raise | lifted. For example, polyamides such as 6 nylon, 12 nylon and 66 nylon and copolymers thereof, polyolefins such as polypropylene and polyethylene and copolymers thereof, polyesters such as polyethylene terephthalate, polybutylene terephthalate, polytetramethylene terephthalate and the like Examples thereof include a copolymer, polyvinyl, polyether, and polycarbonate. These polymers are preferably fiber-forming from the viewpoint of spinnability, but even if the fiber-forming property is somewhat inferior, if it is possible to perform composite spinning in a state bonded to the non-conductive layer, There is no particular problem.

Note that the electrical conductivity of the conductive layer is preferably 10 ⁴ Ω · cm or less, more preferably 10 ² Ω · cm or less.

  On the other hand, the fiber-forming polymer constituting the non-conductive layer bonded to the conductive layer is the same as the fiber-forming polymer described as the description of the synthetic fiber among the fibers constituting the non-conductive yarn 1 described above. Things can be given. And the polyester-type thing is suitable from the point of a weather fastness and dimensional stability similarly to the said fiber-forming polymer.

  And the conductive composite fiber of this invention uses the conductive chip which consists of a conductive particle containing polymer which comprises the said conductive layer, and the nonconductive chip which consists of the nonconductive fiber-forming polymer which comprises the said nonconductive layer. It can be obtained by applying to a melt spinning apparatus equipped with a predetermined die for producing a conjugate fiber, extruding both concentrically from the die at a predetermined extrusion speed, cooling and then drawing and winding.

  In addition, in the said conductive composite fiber, although the joining form of a conductive layer and a nonelectroconductive layer can be set suitably, the example is shown to Fig.2 (a)-(i). 3 is a conductive layer and 4 is a non-conductive layer. Among these, in particular, the conductive layer 3 exposed on the fiber surface and the conductive particles exposed on the fiber surface is preferable in increasing the thermal conductivity.

  In the woven fabric of FIG. 1, the conductive yarn 2 may be composed only of the conductive conjugate fiber, or a combination of multifilament yarn made of conductive conjugate fiber and multifilament yarn made of non-conductive fiber. It may be a twisted yarn or the like. The fineness of these conductive yarns 2 is preferably 11 to 330 dtex, and particularly preferably 20 to 100 dtex. And when applying to thin fabrics, such as a lining, it is preferable that it is 11-56 dtex.

The fabric composed of the non-conductive yarn 1 and the conductive yarn 2 must have a surface resistance of 10 ⁵ to 10 ¹⁰ Ω / sq. That is, when the surface resistance is less than 10 ⁵ Ω / sq, the thermal conductivity is too high, the temperature decrease rate is large, and the heat retention is poor. On the contrary, if the surface resistance exceeds 10 ¹⁰ Ω / sq, the thermal conductivity is poor and the heat storage effect cannot be obtained.

The thermal conductivity of the woven fabric is preferably 0.5 × 10 ^{−4 to} 5.0 × 10 ⁻⁴ W / cm · K (measured by Thermolab II, manufactured by Kato Tech Co., Ltd.). That is, within this range, the heat released from the body can be efficiently stored and kept warm appropriately.

  In order to set the surface resistance within the above range in the woven fabric, it is usually performed by weaving the conductive yarn 2 imparted with appropriate conductivity at an appropriate ratio. The ratio varies depending on the woven density of the woven fabric, the thickness of the yarn, and the like. For example, it is preferable that the conductive yarn 2 is woven into at least one of the backgrounds of the woven fabric at intervals of 2 to 10 mm.

  On the other hand, the heat-storing microcapsules dispersed and attached to the woven fabric are obtained by enclosing a predetermined heat-storing substance with an appropriate wall material.

  The heat storage substance is a substance that has a phase transition point (phase transition temperature) such as a melting point and a freezing point in the vicinity of normal temperature and can delay “cooling”. Examples of the heat storage material include paraffinic hydrocarbons such as octadecane, heptadecane, and hexadecane, petroleum waxes, polytetramethylene ether glycol, polypentamethylene ether glycol, polyhexamethylene ether glycol, epoxy polyol, and other polymer skeletons. Polyols having ether groups, polyols having a carbonate group in a polymer skeleton such as polycarbonate polyols, copolymers thereof, polyether polyols, modified polyols obtained by variously modifying polycarbonate polyols, polydocosyl methacrylate, polyhene Examples include polymers such as long-chain alkyl hydrocarbon esters of methacrylic acid or acrylic acid such as eicosyl methacrylate and polyeicosyl acrylate.

The phase transition point of the heat storage material must include a region in the range of 10 to 35 ° C. The above “including a region in the range of 10 to 35 ° C.” means that the melting point may be in this range or the freezing point may be in this range. That is, a material having a phase transition point in a region where it feels “cold” or “cold” is suitable, and if it is 10 ° C. or higher, it is easy to experience a sufficient heat storage effect. Moreover, if it is 35 degrees C or less, it will be felt that it is "hot", and since the skin surface starts sweating, heat storage property cannot be experienced. In particular, it is preferable that the freezing point associated with the phase transition from the liquid phase to the solid phase is 23 to 27 ° C. because a heat storage effect that makes people feel comfortable is obtained.

  Moreover, in the said heat storage substance, it is suitable that the latent heat which generate | occur | produces by the melt | dissolution and solidification accompanying a phase transition is about 10-250J (joule) / g. That is, if the latent heat is less than 10 J / g, there is a risk that it may be insufficient to develop and experience heat storage, and conversely, if it exceeds 250 J / g, the energy amount and time until phase transition is required. In the meantime, a large amount of heat generated from the human body is taken away, and conversely, it may feel “cold” and cannot contribute to heat storage. Of these, those having a latent heat of 100 to 230 J / g are particularly preferred because they are particularly easy to experience heat storage.

  In view of these points, particularly preferable heat storage materials include octadecane, heptadecane, polytetramethylene ether glycol and the like having a melting point of less than 35 ° C. and a freezing point of 10 ° C. or more.

  Further, the wall material used for encapsulating the heat storage substance is preferably one having a certain mechanical strength from the viewpoint of handleability, for example, polyurethane, urea-formalin resin, melamine-formalin resin. Resin materials such as cyclodextrin, and the like. In particular, a urea-formalin resin or a melamine-formalin resin is preferable, and a low formalin type is particularly preferable.

  And the size of the heat storage microcapsule formed by encapsulating the heat storage material with the wall material is usually an average particle size of 1 to 50 μm, preferably 5 to 25 μm, and particularly 90% or more of the particle size distribution. Is within the range of 5 to 25 μm. Moreover, although the thickness of a wall material is based also on the kind of wall material, a thing of 0.1-30 micrometers is preferable normally, and the thing of about 0.5-6 micrometers is especially more preferable.

  Further, as the resin binder for dispersing and attaching the heat storage microcapsules to the fiber structure, any resin binder conventionally used for dispersing and attaching the microcapsules to the fiber structure may be used. For example, a silicon-based resin binder or a water-soluble urethane-based resin binder is preferable. Among these, a silicon-based aqueous emulsion binder that has excellent dispersibility in water and can be easily diluted with water is particularly preferable.

  As a method of dispersing and adhering the heat storage microcapsules to the fiber structure with the resin binder, an aqueous treatment liquid containing a resin binder and the heat storage microcapsules in a predetermined ratio is usually used for padding, spraying, dipping and removing. Examples thereof include a method of drying after supplying the fiber structure by a liquid method, a coating method or the like.

  The amount of the resin binder to be used is preferably set to 0.1 to 20 times, preferably 0.1 to 15 times that of the heat-storing microcapsules by weight ratio. The amount of the microcapsule and the resin binder attached to the fiber structure is such that the amount of both attached to the fiber structure is 0.3 to 12.0% by weight (hereinafter abbreviated as “%”), preferably 0.5. It is preferable to set it to ˜9.0%. That is, if it is less than 0.3%, the heat storage effect and durability of the resulting heat storage fabric may be insufficient, and conversely if it exceeds 12.0%, the texture of the heat storage fabric may deteriorate. Because there is.

  In addition, when supplying the resin binder and the heat storage microcapsule to the fiber structure, a finishing agent such as a softening agent, a texture adjusting agent, a dye fixing agent, a reactive resin, a condensation resin, a catalyst, It can mix | blend suitably as needed.

  The heat storage fabric obtained in this manner has appropriate heat conduction characteristics and heat storage properties because the heat storage microcapsules are dispersed and attached to the woven fabric including conductive composite fibers and having a specific surface resistance. In addition, when heat is applied to the fabric, the temperature rises quickly and exhibits heat storage. On the other hand, in an environmental change from high temperature to low temperature, the temperature decrease can be delayed by the generation of heat of solidification of the heat-storing microcapsules, and a very excellent heat retaining effect can be obtained.

In the above example, the fabric having a specific surface resistance include a conductive composite fiber (fibrous structure), a heat storage microcapsules but are dispersed attached, only the heat storage effect by the heat storage microcapsules In addition, a certain heat retaining effect can be obtained by including the conductive composite fiber itself. That is, since the fiber structure to which the conductivity of the surface resistance is 10 ⁵ to 10 ¹⁰ Ω / sq is provided with appropriate heat conduction characteristics, the temperature is rapidly increased when heat is applied to the fabric. Demonstrate heat storage. On the other hand, in an environment changes from high temperature to low temperature, to wear by applying fabric garment lining, because heat from the human body is transmitted to the entire garment, the more when the temperature rise is not performed rapidly the temperature lowered, A certain heat retention effect can be obtained.

  And in the heat storage cloth of the present invention, the fiber structure is not limited to the above example, and may take any form of woven fabric and knitted fabric. Examples of the woven fabric include a plain woven fabric, a twill woven fabric, a satin woven fabric, and the like. Examples of the knitted fabric include knitted fabrics such as a single tricot and a double tricot. And as a fiber material, natural fibers, such as cotton, wool, hemp, and silk, can also be mixed suitably and used.

Further, heat storage resistant fabrics of the present invention is made of a fibrous structure to impart a specific surface resistance, it is possible to suppress the amount of heat storage microcapsules Le, with thin, soft texture It is preferred to apply to the dough. Such fabrics, Ru it is best der used in the back ground.

Heat storage resistant fabrics of the present invention, for application to the backing, the basis weight of the fabric 30 to 100 g / m ^2, thickness is required to be set to 0.05 to 0.5 mm. That is, the lining is required to be lightweight and flexible.

  In order to realize the characteristics required for the lining, it is preferable that the content ratio of the conductive conjugate fiber in the fiber structure is set to 0.5 to 4%. For example, in the case of a woven fabric, it is preferable that at least one of the backgrounds is woven with conductive yarns 2 (see FIG. 1) including conductive composite fibers at intervals of 2 to 8 mm.

  The fineness of the conductive yarn 2 is preferably 10 to 50 dtex, and the fineness of the non-conductive yarn 1 is preferably 11 to 110 dtex.

  Furthermore, in the case of woven fabrics, weaving so that the sum of the respective CF (cover factors) in the warp direction and the weft direction is about 1500 to 2500 is preferable in terms of comfort and heat storage when used as clothing. is there. That is, if the sum of the CFs of the background is less than 1500, the fabric weight per unit area is insufficient, and it is difficult to obtain heat retention, and if it exceeds 2500, the softness of the fabric may be impaired and the comfort may be poor. It is. The CF can be obtained from the following equation.

Next, examples of the present invention will be described together with reference examples and comparative examples.

[ Reference Example 1]
Polyester yarn A (56 dtex / 48f) is used for the warp, polyester yarn B (84 dtex / 72f) is used for the weft, 112 warps and 80 wefts are arranged per inch (2.54 cm), respectively. Polyester yarn A and yarn C made of white conductive composite fiber having an electrical resistance value of 3.4 × 10 ⁸ Ω / cm per unit length (22 dtex / 3f: manufactured by Kanebo Gosei Co., Ltd., 22T / 3 · B68) A twisted yarn (A + C) combined with the above was arranged at intervals of 5 mm to produce a plain fabric. The fabric weight was 62 g / m ² , the surface resistance was 6.0 × 10 ⁸ Ω / sq, and the thermal conductivity was 2.0 × 10 ⁻⁴ W / cm · K.

[Example 1 ]
A plain fabric similar to that obtained in Reference Example 1 was prepared. An emulsion solution containing 10% heat-storing microcapsules (average particle size 20 μm, encapsulation rate 80%) encapsulating heptadecane (melting point 22 ° C.) with melamine-formalin resin, and 40% emulsion polymer containing acrylic acid as a main component. A coating solution having a composition of 4% binder, 1.5% nonionic surfactant and 84.5% water was prepared, and this solution was applied to the plain fabric using a knife coater. The coating amount was 30 g / m ² . And it heat-processed at 120 degreeC x 2 minutes, 150 degreeC x 1 minute, and dried, and the plain fabric with a thermal storage microcapsule was obtained. This fabric had a basis weight of 67 g / m ² , a surface resistance of 8.2 × 10 ⁸ Ω / sq, and a thermal conductivity of 1.8 × 10 ⁻⁴ W / cm · K. And the total adhesion amount of the said thermal storage microcapsule and resin binder was 5% with respect to the textile dry weight.

[Comparative Example 1]
Polyester yarn A (56 dtex / 48f) is used for the warp, polyester yarn B (84 dtex / 72f) is used for the weft, and 112 warps and 80 wefts are arranged per inch (2.54 cm), respectively. A plain woven fabric containing no composite yarn Y was produced. This fabric had a basis weight of 60 g / m ² and a thermal conductivity of 1.5 × 10 ⁻⁴ W / cm · K. The surface resistance could not be measured.

[Comparative Example 2]
In the same manner as in Comparative Example 1, a plain fabric without white yarn C made of a white conductive composite fiber was produced. Then, in the same manner as in Example 1 , heat-storing microcapsules were dispersed and attached to the plain woven fabric to obtain a plain woven fabric with heat-storing microcapsules. The basis weight of this product was 63 g / m ² , and the thermal conductivity was 1.2 × 10 ⁻⁴ W / cm · K. The surface resistance could not be measured.

The conductivity (surface resistance), heat retention, flexibility, and wearing feeling of these reference example products, example products and comparative example products were evaluated according to the following methods. The results are also shown in Table 1 below.

[Surface resistance]
The fabric (plain fabric) was allowed to stand for 24 hours in an atmosphere at a temperature of 25 ° C. and a humidity of 60%, and then the surface resistance of the fabric was measured using a Megahmeter MODEL 800 manufactured by ACL-Statide.

[Heat retention]
Each plain woven fabric is cut into a 12 cm square square to form a lining A, which is also cut into a 12 cm square square. 84T / 72SWD, weave density: warp 120 / 2.54 cm, weft 89 / 2.54 cm). As shown in FIG. 3, this is attached to an adhesive mount 11 having a 10 cm square square cutout 10 formed in the center, and a recess having a depth of 3 cm × 15 cm × 15 cm is formed in the center as shown in FIG. Is mounted on a sample support table 13 made of polystyrene foam (not shown), and the surface of the surface B is irradiated with a photographic reflex lamp (National, PRF-500WB) 14 from a position 50 cm away. did. The temperature of the lining A after 1 minute, 5 minutes, 10 minutes after irradiation, 1 minute after extinguishing, 5 minutes later, and 10 minutes later was measured with a temperature sensor 15 composed of a K-type thermocouple. The higher the temperature rise during irradiation and the slower the temperature drop after turning off, the higher the heat retention.

[Flexibility]
Measurement of JIS L 1096 stiffness / softness 6.19.4 Measured by D method (heart loop method) and evaluated in the following three stages.
○: 65 or more (soft)
(Triangle | delta): 60 or more and less than 65 (it is firm and is somewhat hard)
X: Less than 60 (hard)

[A feeling of wearing]
Each plain woven fabric was used as a lining, and a skirt for ladies was prepared together with the same outer material as the outer material B used in the above [Heat retention], and allowed to be worn by 10 monitors and allowed to spend 1 hour in a room at 25 ° C. Next, it was moved to a room at 15 ° C. for 1 hour. And the wearing feeling of the skirt was sensory-evaluated in the following three steps.
○: The temperature did not change, and it was felt that there was heat retention. Δ: A slight temperature change was felt, but it was felt that there was some heat retention.
X: Thermal insulation was not felt.

[ Reference Examples 2 and 3 and Comparative Examples 3 and 4]
Using the same non-conductive yarn 1 and conductive yarn 2 as in Reference Example 1 and changing the weaving ratio of the conductive yarn 2, the resulting surface resistance was changed as shown in Table 2 below. Otherwise, a plain fabric was obtained in the same manner as in Reference Example 1. About these, heat retention etc. were evaluated similarly to the above, and it showed together in following Table 2.

[Examples 2 to 5 ]
The total adhesion amount of the heat storage microcapsules and the resin binder (ratio to the dry weight of the fiber structure) was changed as shown in Table 3 below. Other than that was carried out similarly to Example 1, and obtained the plain fabric. About these, heat retention etc. were evaluated similarly to the above, and it showed together in following Table 3.

It is typical explanatory drawing which shows one Example of this invention. (A)-(i) has shown the example of the cross-sectional shape of the electroconductive composite fiber in which all are used for this invention. It is explanatory drawing of the evaluation method of the heat retention in this invention. It is explanatory drawing of the evaluation method of the heat retention in this invention.

Explanation of symbols

1 Non-conductive yarn 2 Conductive yarn

Claims (4)

Basis weight 30 to 100 g / m ^2, Ri Do from the set fibrous structure thickness 0.05 to 0.5 mm, a fabric that is used as a clothing lining, as well as containing an electrically conductive composite fibers, phase Thermal storage microcapsules formed by encapsulating a paraffinic material having a transition point of 10 to 35 ° C. with a resin material are dispersed and attached via a resin binder, and the surface resistance is set to 10 ⁵ to 10 ¹⁰ Ω / sq. A heat storage fabric characterized in that The total coating weight of the heat storage microcapsules and resin binder, heat accumulation resistant fabric of claim 1, wherein it is set to 0.3 to 12.0 wt% relative to the dry weight of the fiber structure. The heat storage fabric according to claim 1 or 2, wherein the paraffinic substance of the heat storage microcapsule is octadecane, heptadecane, or polytetramethylene ether glycol. The fiber structure is a woven fabric in which multifilament yarns composed mainly of non-conductive fibers are used as warps and wefts, and multifilament yarns composed of conductive composite fibers are woven between them at predetermined intervals. The heat storage fabric according to any one of the above .

Images