JP2014183868A - Light absorption and heat generation carpet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carpet: comprising a surface layer where pile yarn is formed, and a backing layer; and generating heat and providing more warmth by irradiation of light such as visible ray or infrared ray because a light absorption and heat generation agent adheres to the pile yarn with binder resin.SOLUTION: In a carpet comprising a surface layer where pile yarn is formed and a backing layer, a light absorption and heat generation agent adheres to the pile yarn with binder resin.

Description

  The present invention relates to a rug that generates heat when irradiated with light so as to feel warmer.

  As a method of using a rug, for example, a method of using a carpet in Japan is often used while sitting on a carpet or lying down, unlike Europe and America. Therefore, the feel when the carpet is touched by hand is an important factor when purchasing the carpet. In particular, those that are soft and have a feeling of touch like fur with long bristle feet are preferred. On the other hand, from the viewpoint of energy saving, carpets that are superior in heat insulating properties and heat retaining properties compared to other flooring materials have been reviewed, and carpets that are further functionalized are required.

  In patent document 1, the textile product for interiors using the fiber which adhered the water molecule adsorption heat generating material and the heat storage agent is proposed, and the heat generated by using two of the water molecule adsorption heat generating material and the heat storage agent is proposed. A technique is disclosed in which the temperature rise of the fiber is controlled to make a person feel warm and comfortable, and such a time is continued for a long time.

  Patent Document 2 proposes an interior material to which highly hygroscopic fine particles are attached as an interior material that absorbs moisture in the living room and moisture emitted from the human body to generate heat and develop an auxiliary heating effect. doing. As the highly hygroscopic fine particles, for example, any one of polystyrene-based, polyacrylonitrile-based, polyacrylic acid ester-based, polymethacrylic acid ester-based vinyl polymers, sulfonic acid groups, carboxylic acid groups, phosphoric acid groups, or Disclosed are crosslinked polymer fine particles having at least one hydrophilic group of those metal salts and crosslinked with either divinylbenzene, triallyl isocyanate or hydrazine.

  Patent Document 3 has the same configuration as Patent Document 2, and is suitable for cold clothing, cold-proof living materials, bedding interior materials, etc., and heat generation rate, heat generation temperature, heat generation retention, condensation during moisture absorption or water absorption. A hygroscopic / water-absorbing exothermic structure excellent in prevention is provided.

  However, the techniques of Patent Documents 1 to 3 are unsuitable for processing a carpet where a soft touch feeling is preferred, and improvement is required because the texture becomes hard even when processed into a pile yarn of carpet.

Therefore, the applicant has proposed a carpet having a soft texture and a warm tactile sensation in Patent Document 4 by fixing the moisture-absorbing exothermic resin to the fiber of the pile yarn by crosslinking with a crosslinking agent having an epoxy group. Furthermore, there is a demand for improved warmth of touch.
JP 2003-193371 A JP 2003-96672 A Japanese Patent Application No. 2003-147680 Japanese Patent Application No. 2009-263804

  This invention is made | formed in view of this technical background, Comprising: It aims at providing the rug which made it feel further warm by generating heat | fever by irradiation of light.

  As a result of intensive studies to solve such problems, the inventors of the present invention have found that a light absorption heat generating agent is added to the pile yarn by a binder resin in a rug including a skin layer on which a pile yarn is formed and a backing layer. As a result of the fixing, the present inventors found that a rug that feels warmer can be obtained by generating heat by light irradiation. In order to achieve the above object, the present invention provides the following means.

  [1] A light-generating rug characterized in that a light-absorbing heat generating agent is fixed to the pile yarn by a binder resin in a rug including a skin layer on which a pile yarn is formed and a backing layer.

  [2] The light-generating rug according to item 1 above, wherein the light-absorbing heat-generating agent is at least one selected from stannic oxide doped with antimony oxide, antimony oxide, and stannic oxide.

[3] The photothermal rug according to item 1 or 2, wherein the light absorbing exothermic agent is fixed to the pile yarn in an amount of 0.1 to 30 g / m ² .

  In the invention of [1], in the rug including the skin layer on which the pile yarn is formed and the backing layer, the light absorbing heat generating agent is fixed to the pile yarn by the binder resin, so that the rug is irradiated with light. It can generate heat and feel warmer.

  In the invention of [2], the light-absorbing heat generating agent is at least one selected from stannic oxide doped with antimony oxide, antimony oxide, and stannic oxide. Since it absorbs and emits far-infrared rays, it can be made into a rug that can generate heat and feel warmer.

In the invention of [3], since the amount of the light absorbing exothermic agent fixed to the pile yarn is 0.1 to 30 g / m ² , a rug having sufficient heat generation performance can be obtained.

  Next, although one Embodiment of the light heating rug concerning this invention is described, it is not limited to this form. Examples of the light heating rug of this embodiment include a Mayer fabric and a tufted carpet as a skin layer on which a pile yarn is formed. The present invention includes a skin layer on which a pile yarn is formed and a backing layer, and a light absorbing heat generating agent is fixed to the pile yarn.

  The light-absorbing exothermic agent only needs to generate heat when irradiated with light, that is, a substance that absorbs light energy of visible light or infrared light and converts it into heat energy. Zirconium carbide, anthoraquinone compounds, naphthalocyanine compounds, stannic oxide doped with antimony oxide, antimony oxide, stannic oxide, and the like. In particular, since there is no light absorption in the visible light region, there is little change in the apparent hue even when it is fixed to the pile yarn, and the absorption of light energy in the infrared light region is high. Stannic acid, antimony oxide and stannic oxide are preferred.

  As the binder resin, it is only necessary that the light-absorbing heat generating agent can be firmly fixed to the pile yarn, but in general, for example, urethane resin, self-crosslinking acrylic resin, methacrylic resin, silicone resin, glyoxal resin, polyester resin, Vinyl acetate resin, vinyl chloride resin, vinylidene chloride resin, butadiene resin, melamine resin, epoxy resin, acrylic-silicon resin, styrene-butadiene copolymer resin (SBR), ethylene-vinyl acetate copolymer resin (EVA), isobutylene Mention may be made of maleic anhydride copolymer resin, ethylene-styrene-acrylate-methacrylate copolymer resin, and the like.

  The method for attaching the light absorbing exothermic agent to the pile yarn is not particularly limited, and examples thereof include a dipping method and a spraying method.

  The heat treatment method is not particularly limited, and examples thereof include dry heat treatment, heating with normal pressure steam, and heat treatment with high pressure steam at about 170 ° C.

0.1-30 g / m < ² > is suitable for the fixed amount with respect to the pile yarn of a light absorption exothermic agent. If the fixing amount of the light absorbing exothermic agent to the pile yarn is less than 0.1 g / m ² , the heat generation effect due to light absorption is small, and even if it exceeds 30 g / m ² , an effect commensurate with the increase in the fixing amount is not obtained, This is not preferable because the texture of the pile yarn may be impaired.

Although there is no restriction | limiting in particular in the adhesion amount with respect to the pile yarn of binder resin, 0.5-20.0 g / m < ² > is suitable. If the adhesion amount of the binder is less than 0.5 g / m ² , the fixation to the pile yarn becomes weak and the washing durability may be impaired, and if it exceeds 20 g / m ² , the texture of the pile yarn may be impaired. This is not preferable.

  The skin layer only needs to be provided with pile yarn, and examples thereof include Mayer fabric and tufted carpet. There are no particular restrictions on the fibers used for the skin layer, but examples include synthetic fibers such as polyester, acrylic, nylon, and polypropylene, semi-synthetic fibers such as rayon, and natural fibers such as cotton, silk, wool, and hemp. Can do. The pile may be a cut pile or a loop pile, but the cut pile is more warm. The basis weight of the pile yarn is not particularly limited as long as it forms a rug. The Mayer fabric is a fabric obtained by knitting pile yarn with a known double raschel knitting machine, and the tufted carpet is formed by planting pile yarn on a base fabric with a known tuft loom.

  The fibers used for the base fabric of the tufted carpet are not particularly limited, and are usually used base fabrics such as polyester fibers, polypropylene fibers, woven base fabrics such as linen and cotton, knitted base fabrics and non-woven fabrics. Good.

  Next, the backing layer is not particularly limited as long as it is a resin composition or a rubber composition that can fix pile yarn. For example, the resin component of the resin composition may be acrylic, urethane, polyvinyl chloride, polyethylene, polypropylene, and the like. And resins such as ethylene-vinyl acetate copolymer (EVA). Examples of the rubber component of the rubber composition include SBR (styrene-butadiene), NBR (acrylonitrile-butadiene rubber), MBR (methyl methacrylate-butadiene rubber), and natural rubber. In general, calcium carbonate, aluminum hydroxide, magnesium hydroxide, fly ash or the like is added as a filler and used as a backing layer.

Further, a second base fabric made of a non-woven fabric may be provided under the backing layer to provide cushioning performance and backing layer protection performance. It does not specifically limit as a 2nd base fabric, A needle punch nonwoven fabric, a spun bond nonwoven fabric, etc. can be illustrated. The basis weight of the second base fabric is preferably 50 to 1000 g / m ² , the thickness is set to 0.5 to 15 mm, and the fineness of the constituent fibers is preferably set to a range of 0.1 to 30 dtex. When the basis weight of the second base fabric is less than 50 g / m ² , the function and quality of the rug are inferior, which is not preferable. If it exceeds 1000 g / m ² , the cost will increase unnecessarily. The material is not particularly limited like the pile yarn. Further, an anti-slip layer may be formed on the lowermost surface of the second base fabric with a resin composition or a rubber composition.

  Next, the material, structure, processing method, hygroscopic heat generation performance measurement test and judgment method used as an example of the present invention are as follows.

<Materials used>
Base fabric: 100 g / m ² polypropylene tape yarn woven fabric (14 × 13) and 80 g / m ² polyester non-woven fabric laminated and integrated by needling Pile yarn: Pile yarn made of polyester fiber Cut into a base fabric with a tufting machine (1 / 8G) in a cut shape (pile length 10.0 mm, basis weight 750 g / m ² )
Backing layer: SBR latex (calcium carbonate as filler)
Second base fabric: Needle punched nonwoven fabric made of 5 dtex polyester fiber (300 g / m ² basis weight, thickness 6 mm)
Binder resin ... Polyurethane binder Light absorption exothermic agent ... Antimonic oxide doped stannic oxide dispersion

<Thermograph evaluation>
The light absorption heat generation effect was achieved by irradiating a 20cm x 30cm rug with a 500W reflex lamp (PRF100V500WD manufactured by Iwasaki Electric Co., Ltd.) at a distance of 30cm for 15 minutes in a room air-conditioned at a temperature of 20 ° C and a humidity of 65% RH. The average surface temperature of the entire rug after 15 minutes of irradiation was measured by a graph and used as the photoexothermic temperature.

<Sensory evaluation>
In a room air-conditioned at a temperature of 20 ° C. and a humidity of 65% RH, the comparative sample 1 having a size of 20 cm × 30 cm and the measurement sample are arranged and irradiated for 15 minutes so that the reflex lamps are simultaneously halved. Whether the number of test subjects was 10 or not and 80% or more of them felt warm was determined to be acceptable.

<Example 1>
After 40 parts by weight of a stannic oxide dispersion (solid content 2%) doped with antimony oxide in 100 parts by weight of water is dispersed, an aqueous solution in which 10 parts by weight of binder resin is dispersed is sprayed on the pile. 250 g / m ^{2 was} applied to the yarn and dried at 120 ° C. for 10 minutes to obtain a light-generating rug with 1.3 g / m ^{2 of} stannic oxide doped with antimony oxide fixed on the rug. In the thermograph evaluation, the photothermal temperature was 41.2 ° C. In sensory evaluation, 10 people felt warm. In addition, the touch was soft as in Comparative Example 1.

<Example 2>
In Example 1, 96 g / m ² of the aqueous solution was applied to the pile yarn of the rug by spraying, dried at 120 ° C. for 10 minutes, and stannic oxide doped with antimony oxide on the rug was 0.5 g / m. Except that ^{2 were} fixed, a light-generating rug was obtained in the same manner as in Example 1. In thermograph evaluation, the photothermal temperature was 38.3 ° C. In the sensory evaluation, 8 people felt warm. In addition, the touch was soft as in Comparative Example 1.

<Example 3>
In Example 1, in place of the 2% solids, 20% solids antimony oxide and stannic oxide dispersion 250 g / m ² was applied to the pile yarn rug a spray doped, 120 ° C., 10 minutes A photothermal rug was obtained in the same manner as in Example 1 except that stannic oxide doped with antimony oxide was fixed to 13 g / m ² on the rug. In thermograph evaluation, the photothermal temperature was 45.2 ° C. In sensory evaluation, 10 people felt that it was quite warm. Further, the texture was slightly hard as compared with Comparative Example 1.

<Comparative Example 1>
In Example 1, a rug was prepared without spraying an aqueous solution, that is, a light absorbing exothermic agent not fixed on the rug. In the thermographic evaluation, the photothermal temperature was 35.1 ° C. In the sensory evaluation, a standard rug was used.

  As can be seen from Table 1, the light-generating rugs described in Examples 1 to 3 of the present invention became rugs that generate heat and feel warmer when irradiated with light.

  In contrast, the rug of Comparative Example 1 had a low light heat generation temperature and was inferior in warmth.

  The light-generating rug of the present invention is preferably used for a rug that is laid under a household fence, for example, but is not limited to such an application.

Claims (3)

  A light-generating rug characterized in that a light-absorbing heat generating agent is fixed to the pile yarn by a binder resin in a rug comprising a skin layer on which a pile yarn is formed and a backing layer.   2. The photothermal rug according to claim 1, wherein the light absorbing exothermic agent is at least one selected from stannic oxide doped with antimony oxide, antimony oxide, and stannic oxide. The light heating rug according to claim 1 or 2, wherein an amount of the light absorbing heat generating agent fixed to the pile yarn is 0.1 to 30 g / m ² .