JPH0316542Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Application Field] The present invention relates to a floor covering for underfloor heating. More specifically, the present invention relates to a rug that can be used on floors heated under floor heating, has good heat permeability, and does not inhibit the effect of floor heating. [Prior art] Recently, for indoor heating, hot water circulation pipes or heating wires are buried near the floor, or the floor layer is made of energized heat generating material to raise the temperature of the entire floor. Underfloor heating is becoming popular. On the other hand, it is widely practiced to lay rugs on the floor to keep the room warm, and rugs with good insulation, cushioning properties, and appearance are preferred, and rugs with a pile layer are generally used. ing. However, when a conventional rug is placed on a floor with underfloor heating, the rug absorbs and insulates the heat radiated from the floor, which reduces the indoor heating effect. Usually, no rug was used on the floor. However, in order to improve the aesthetics of the room, or when the floor surface is required to provide cushioning and comfort, there is a growing demand for the use of rugs even on floors with underfloor heating. However, a rug suitable for floors with underfloor heating has not yet been developed. [Problems to be solved by the invention] The present invention aims to provide a rug that does not absorb heat or provide heat insulation and does not reduce the room heating effect when used on a floor that is heated. It is. [Means for Solving the Problems and Their Effects] The floor covering for underfloor heating of the present invention comprises a breathable fiber base fabric, adhered to the back surface of the base fabric, and made of an elastic polymer material. wherein the backing layer-forming polymer material includes at least one highly thermally conductive material, and the backing layer has a thermal conductivity of 0.5 kcal/m・h・℃ or more,
Moreover, it is formed by a large number of island-like polymers separated from each other, and between these many island-like polymers,
Ventilation grooves are formed that communicate with each other, and the total area of the ventilation grooves is 20% to 70% of the total area of the back surface of the base fabric.
%. In the floor covering of the present invention, the backing layer-forming polymeric material includes at least one highly thermally conductive material, so that the backing layer has 0.5 kcal/m.
It has an excellent thermal conductivity layer of h.degree. C. or higher. The fiber base fabric of the rug of the present invention is formed using a fiber material, and there are no particular limitations on its composition, shape, or dimensions.As long as it has sufficient air permeability, it can be fabricated from woven or knitted materials. , a nonwoven fabric (for example, needle punched fabric), or a composite of two or more of these. There are no particular restrictions on the type of fiber that forms the base fabric, and it may be made of natural fibers such as cotton, linen, or wool, or synthetic polymers such as polyester, polyethylene, polypropylene, nylon 6, nylon 66, and acrylic polymer. It may be formed using one or more types of synthetic fibers or semi-synthetic fibers such as cellulose acetate. Moreover, glass fiber, carbon fiber, or metal fiber may be used in combination. These fibers are cotton-like, yarn (spun yarn, multifilament yarn), tape yarn,
It may be of any shape, such as a split yarn, and its cross-sectional shape may be circular or irregular, or it may be a flat filament. The fiber base fabric is preferably one that is not electrostatically charged, that is, has conductivity, and for this purpose, conductive fibers, such as carbon fiber, and metal fibers, such as stainless steel fiber, may be mixed. Alternatively, conductive fibers obtained by mixing a fiber-forming polymer with a conductive substance, such as carbon black, conductive metal powder, or conductive compound powder, such as copper halide powder, may be used, or the above-mentioned The fiber base fabric may be impregnated or coated with a conductive paint containing a conductive substance, or the conductive substance may be plated onto the fibers. The surface layer of the fiber base fabric may form a fiber pile layer. This pile layer may be comprised of either loop pile or cut pile. It is preferable that the pile layer also has conductivity and has little or no electrostatic chargeability. Therefore, it is preferable that the pile layer is composed of the above-mentioned conductive fibers or that they are used in combination. It is preferable that the conductive fibers are in contact with or continuous with other conductive fibers at the base portion of the base fabric, so that the entire base fabric is conductive. A backing layer is adhered to the back side of the base fabric. When the base fabric has a pile layer, the back side of the base fabric, that is, the root portion of the pile fibers, may be precoated with an adhesive polymer in order to prevent the pile fibers from falling off. At this time, the base fabric and the backing layer are bonded together via the precoat layer. The precoat layer generally needs to be breathable, preferably having a polymerization of 100 to 1000 g/ ^m2 , and it may be porous. Preferably, the precoat layer is also conductive, and examples of polymers for forming such a conductive precoat include polyvinyl chloride (PVC), ethylene-vinyl acetate copolymer (EVA), polyurethane, polyacrylic, and polyester. , synthetic resins such as polyamide, or rubbery polymers such as chlorosulfonated polyethylene, urethane rubber, butyl rubber, styrene-butadiene rubber, isoprene rubber, etc., and conductive substances (in liquid, powder, or fibrous form). ), for example, carbon black, graphite,
Alternatively, adhesives mixed with various conductive metals or conductive compounds can be used. When the base fabric has a pile layer and a precoat layer as described above, a pile layer and a non-pile layer,
Preferably, at least one of the precoat layer and the precoat layer is electrically conductive. In the rug of the present invention, a special backing layer is adhered to the back side of the base fabric for the purpose of ensuring the dimensional stability, shape stability, and air permeability of the rug, and improving ease of construction and handling. This backing layer is formed from natural or synthetic rubber or synthetic resin, but
Fibers or fabrics may be included for dimensional and shape stabilization. In the rug of this invention,
The backing layer, like the base fabric and precoat layer, needs to be breathable, so the backing layer is made up of multiple polymer layers that are separated from each other. Ventilation grooves that communicate with each other are formed between the layers, and these ventilation grooves open toward the floor surface and communicate with the breathable base fabric, directing heated air from the heated floor surface above the rug. It is something that can be transmitted and dissipated into space. Within such a backing layer, the polymer layer is distributed in the form of numerous islands within a sea of interconnected ventilation grooves. The ventilation grooves are distributed almost uniformly over the entire surface of the backing layer, and there are no particular limitations on their shape or dimensions, but their total area is approximately
It is necessary to be within the range of 20% to 70%. When this area ratio is smaller than 20%, the convection promoting effect of the ventilation grooves becomes insufficient. Also, the area ratio is 70%
If it exceeds , the backing effect of the backing layer on the base fabric will be insufficient. Further, on the back side of the rug of the present invention illustrated in FIGS. 1 to 4, a large number of independent island-shaped polymer layers 4 are formed in the backing layer 1, and a large number of air vents communicate with each other between them. A groove 5 is formed. There is no particular limitation on the shape of this island-shaped polymer layer 4, and it may be an oblong shape, a diamond shape, a long hexagonal shape, or a circle as shown in the figure, but is not limited to these shapes. In addition to the ventilation grooves as described above, ventilation holes may be mixed in the backing layer, and in this case, the ventilation holes may be formed in the island-like polymer layer 4. The shape and size of the ventilation grooves in the backing layer can be determined by considering the ventilation effect of the backing layer, the cushioning effect, weight, and aesthetics of the rug. The integrally communicating ventilation grooves are effective in promoting convection of heated air and making the ventilation (permeation) uniform. In addition, the thickness of the backing layer is 0.5 to 15 mm, especially 1 to 10 mm.
This is preferable because it promotes convection of heated air within the ventilation grooves and facilitates passage through the base fabric. The polymer forming the backing layer must be stable at floor heating temperatures;
For example, natural rubber, synthetic rubber, styrene-
butadiene rubber, chlorosulfonated polyethylene rubber, polyurethane rubber, butyl rubber, polyisoprene rubber, etc., and synthetic resins such as polyvinyl chloride, polyurethane, ethylene-vinyl acetate copolymer, isotactic polypropylene,
You can choose from polyethylene, polyacrylic resin, polyester, polyamide, etc. These backing layer-forming polymers contain plasticizers,
Fillers, colorants, stabilizers and/or other additives may be included, but these must not deteriorate or evaporate at temperatures below 40°C. The backing layer-forming polymer material is preferably one that does not undergo permanent deformation due to thermoplasticity at temperatures below 40°C, and more preferably has heat deformation resistance at temperatures above 45°C. Among the above polymers, those more preferable for forming the backing layer of the rug of the present invention are polyvinyl chloride resin, polyurethane resin, ethylene-vinyl acetate copolymer resin, polypropylene resin, polyethylene resin, polystyrene resin, These include polyamide resin, natural rubber, and the aforementioned synthetic rubber. especially,
A polyvinyl chloride resin containing a plasticizer with a molecular weight of 400 or more and excellent heat resistance is effectively used in the rug of the present invention. The backing layer has a good thermal conductivity, i.e. preferably 0.5 kcal/m·h·°C or more,
It has a thermal conductivity of 10kcal/m・h・℃ or more. For example, the following polymers have the following thermal conductivities:

[Effect of idea]

When the rug of the present invention is placed on a floor with underfloor heating, the temperature of both the rug and the room rises at a satisfactory rate, the heat resistance of the rug itself is satisfactory, and the temperature of the room is almost uniform. You can comfortably use underfloor heating.

[Brief explanation of the drawing]

1 to 4 are explanatory views showing examples of the shapes and arrangement of the polymer layer and ventilation grooves in the backing layer of the rug of the present invention, respectively. 1... Bucking layer, 4... Island polymer layer, 5
...Vent groove.

Claims (1)

[Claims for Utility Model Registration] 1. A backing layer having an air-permeable fiber base fabric and a backing layer formed of an elastic polymer material and bonded to the back surface of the base fabric, the backing layer forming polymer material contains at least one highly thermally conductive material, and the backing layer has a thermal conductivity of 0.5 Kcal/m・h・℃ or more and is formed of a large number of mutually separated island-shaped polymers. , ventilation grooves communicating with each other are formed between these many island-shaped polymers, and the total area of the ventilation grooves is within the range of 20% to 70% of the total area of the back surface of the base fabric. A floor covering with underfloor heating characterized by: 2. The rug according to claim 1, wherein the base fabric and the backing layer are bonded through an air permeable precoat layer made of an adhesive polymer. 3. The rug according to claim 2, wherein the precoat layer is porous. 4. The rug according to claim 1, wherein the island-like polymer layer is porous. 5 The backing layer forming polymer is natural rubber,
The rug according to claim 1, which is selected from synthetic rubber, polyvinyl chloride, polyurethane, ethylene-vinyl acetate copolymer, polypropylene, polyethylene, polyacrylic resin, polyester, and polyamide. 6. The rug according to claim 1, wherein the highly thermally conductive material is selected from metal powder, graphite, and carbon black. 7. The rug according to claim 1, wherein the rug has the shape of a tile carpet. 8. The rug according to claim 1, wherein the surface layer of the base fabric forms a fiber pile layer. 9. The rug according to claim 1, wherein the backing layer forming polymer is a plasticizer-containing polyvinyl chloride resin having a molecular weight of 400 or more.