JPH1193388A - Heat-generating floor board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize a dimensional change due to the moisture of a heat- generating floor board and the permeation of moisture into the heat-generating floor board further, and to prevent the dimensional change and permeation surely without damaging adhesive properties with the general-purpose adhesives of a rear material as a part of the contour member of the heat-generating floor board. SOLUTION: A rear material 4 is formed in a laminated sheet having structure, in which thin sheet layers 7, 7 consisting of a vegetable fiber material are heated and bonded with both surfaces of a core material 5 composed of fibers having hydrophobic properties through resin layers 6, 6 respectively. A dimensional change due to the moisture absorption and water absorption of the thin sheet layers 7 is inhibited by the fibers of the core material 5 and the resin layers 6 while infiltration into the heat-generating floor board through the rear material 4 of moisture is prevented by the resin layers 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-generating floor panel which is excellent in waterproofness and moisture-proof property and has good adhesiveness to a floor base panel using a general-purpose adhesive, and particularly to a technical field relating to a backing material thereof.

[0002]

2. Description of the Related Art Conventionally, as this type of heat generating floor plate, there is known a structure in which a heating element and a heat insulating material are housed in an outer shell member as described in, for example, Japanese Utility Model Application Laid-Open No. 62-59991. Have been. In other words, the heat generating floorboard fixes the wooden crosspieces between the opposing side ends of the backing material made of the wooden material, and fixes the wooden surface materials between the upper surfaces of the crosspieces to form the outer shell member. A heat insulating material and a heating element are stacked and filled in the space between the wooden crosspieces, and the upper surface of the heating element is brought into contact with the wooden surface material.

However, in this conventional heating floor plate,
Since a wood material such as a plywood or a particle board is used for a back material constituting a part of the outer member, there are the following problems.

(A) Moisture from under the floor causes the back surface material to absorb moisture and change its dimensions, thereby causing deformation such as warpage on the floor surface. In addition, since moisture permeates into the inside of the heat generating floor plate, deterioration of electric components including the heat generating element is likely to occur.

(B) If there are minute irregularities or bends on the upper surface of the floor base panel, it becomes difficult for the back surface material to come into close contact with the floor base panel, and poor adhesion occurs between them. For this reason, floor noise is likely to occur in such places.

In order to solve these problems, there is a method of using a flexible thin plate made of metal or resin as a back surface material. However, these materials are not practical because of poor adhesion to general-purpose adhesives such as vinyl acetate. In order to prevent poor bonding, a special adhesive is required, and furthermore, there is a problem that the bonding operation is troublesome.

[0007] In order to obtain the same adhesiveness as conventional wood materials with a general-purpose adhesive, the applicant of the present invention has applied a resin-impregnated sheet obtained by impregnating paper or cloth with a resin and integrating the resin with the back surface. Heat-producing floorboards used for materials (Japanese Unexamined Patent Publication No.
264604).

[0008]

However, the above-mentioned proposal is not without its problems at all, and there is room for further improvement. That is, since the resin-impregnated sheet in the heating floor plate of the proposed example uses paper or cloth, etc., although it is slightly smaller than the conventional backing material, it changes in size due to water absorption or moisture absorption and the penetration of moisture into the heating floor plate. Is inevitable. For this reason, the above-mentioned problem (a) may be caused depending on the environment where the device is installed in a highly humid place or depending on the use environment for many years. Then, even in the case where even a slight deformation is conspicuous, it is regarded as a problem in appearance.

[0009] The present invention has been made in view of the above, and an object of the present invention is to further improve the structure of the above-mentioned backing material so as not to impair the adhesiveness with a general-purpose adhesive and to produce a heat-generating floor plate. It is another object of the present invention to further stably and surely prevent the dimensional change due to moisture and the penetration of moisture into the heat generating floor panel.

[0010]

In order to achieve the above-mentioned object, according to the present invention, as a back surface material of a heat generating floor plate, both surfaces of a core material made of a fiber whose dimensional change is small due to moisture or heat such as heating are respectively provided. A laminated sheet having a structure in which a thin sheet layer made of a vegetable fiber material was heated and bonded via a resin layer was used.

More specifically, according to the first aspect of the present invention, a plurality of crosspieces arranged in parallel with each other in a horizontal direction, a surface material joined between upper surfaces of the crosspieces, It is assumed that a heating floor plate is formed by stacking and filling a heating element and a heat insulating material in an outer member including a back material joined between lower surfaces of materials.

The back surface material is heat-bonded to the core material made of a fiber whose dimensional change is small due to moisture absorption, heat absorption, or the like, and to the front and back surfaces of the core material through a resin layer covering the entire core material. And a thin sheet layer made of the plant fiber material thus obtained.

According to the above configuration, the back material of the heat generating floor plate is
Consists of a core material made of fibers whose dimensional change is small due to moisture absorption and water absorption, and a thin sheet layer made of a vegetable fiber material which is heated and bonded to the front and back surfaces of the core material through resin layers over the entire core material. The thin sheet layers on the front and back sides are likely to undergo dimensional changes due to moisture absorption or water absorption, but this is suppressed by the fiber and resin layers of the core material and the dimensional stability of the back surface material against moisture Is improved. In addition, since the resin layer is interposed between the core material and the thin sheet layer without any gap, it is possible to prevent moisture from penetrating into the heat generating floor plate via the back surface material. As a result, even if the heat generating floor plate is installed in a place with strong moisture, or there is a long-term use environment, deformation of the heat generating floor plate and deterioration of electric components inside the heat generating floor plate can be stably and reliably prevented.

Further, since the thin sheet layers on the front and back surfaces of the back material are made of a vegetable fiber material, they are well compatible with general-purpose adhesives such as vinyl acetate. Can be used with good workability. In addition, since the adhesiveness is good, it is possible to prevent poor adhesion to the floor base panel and floor noise caused by the poor adhesion.

According to the second aspect of the present invention, the core material of the back material is formed by laminating an upper fiber layer made of fibers extending in one direction and a lower fiber layer made of fibers extending in a direction orthogonal to the upper fiber layer. Assume that they are integrated. Thereby, a dimensional change in either direction can be suppressed.

In the third aspect of the present invention, the core material of the back surface material is made of any one of glass fiber, aramid fiber, carbon fiber and polyethylene terephthalate fiber. Such a fiber is particularly preferable because it hardly undergoes a dimensional change such as expansion and contraction due to moisture or heat such as heating, and is toughened by being combined with a resin layer.

Further, in the invention of claim 4, the resin layer of the back material is made of either a polypropylene resin or a polyethylene terephthalate resin. These resins are also preferable because they have high waterproofness and are stable against moisture and heat.

Further, in the invention of claim 5, the thin sheet layer of the back material is made of any of kraft paper, nonwoven fabric and woven fabric. A thin sheet layer made of a paper-like material or a cloth-like material made of vegetable fibers such as wood fibers can be made to adhere to a floor base panel in a good and reliable manner, as well as being combined with a resin layer. It is.

Therefore, in the inventions of claims 3 to 5,
A core material, a resin layer or a thin sheet layer of the back material can be easily obtained.

[0020]

2 and 3 show a heat generating floor plate A according to an embodiment of the present invention.
Having. The outer shell member 1 includes a pair of square bar-shaped bars 2, 2 horizontally extending in the width direction of the heat generating floor panel A and extending in parallel with each other in the longitudinal direction, and between the upper surfaces of both the bars 2, 2. A long rectangular plate-shaped surface material 3 having a constant width is arranged and joined over the same, and a similarly shaped back material 4 is arranged and joined between the lower surfaces of both the crosspieces 2. A heating element 9 and a heat insulating material 10 are filled up and down in the space between the crosspieces 2 and 2 in the outer shell member 1.

When assembling the heat generating floor plate A, the surface material 3 is turned upside down and the beam members 2 are fixed to the upper surfaces at both ends in the width direction by an adhesive or the like, respectively.
The heating element 9 and the heat insulating material 10 are sequentially arranged in a stacked state in the space on the upper surface of the surface material 3 between them, and the back material 4 is further superimposed thereon. It is integrally fixed to the upper surfaces of the crosspieces 2 and 2 with an adhesive or the like.

Each of the crosspieces 2 is made of a wood material such as plywood, particle board, MDF, solid material, or a metal plate.

The heat insulating material 10 is made of a single plate such as an insulation board, glass wool, rock wool, urethane foam, foamed phenol, or a composite of two or more of them. The one reinforced by the object is used. In addition, this heat insulating material 10
May be adhered on the back surface member 4, but is preferably simply placed so as not to generate internal stress due to expansion and contraction.

As the heating element 9, a sheet heating element, a linear heater, or a carbon-based heater can be used, and an appropriate metal plate or the like is placed on the heating element 9 so as to be in contact with the surface material 3. A hot plate or a resin plate for preventing electric leakage may be integrally laminated. The heating element 9 includes a thermostat, a sensor,
Wiring cords and the like are provided, and these constitute an electric component. Note that the heat insulating material 10 and the heating element 9 may not be bonded.

Further, the surface material 3 is made of a synthetic resin-injected wood veneer obtained by injecting and solidifying a synthetic resin solution of unsaturated polyester, acrylic, styrene, phenol or the like into a veneer of wood or a veneer of wood, or a plywood, WPC decoration. In the case of wood veneer or synthetic resin-injected wood veneer made of plywood or metal plate, a wood substrate made of a single or composite material such as plywood, MDF, particle board, etc. having an appropriate thickness is attached to the back surface. Together, they are formed on a surface plate having a thickness of 2 to 15 mm. The heating element 9 may be integrally bonded to the lower surface of the surface material 3 via the above-described heat equalizing plate.

The feature of the present invention lies in the structure of the back material 4. That is, as shown in detail in FIG. 1, the back material 4 includes a core material 5 made of a fiber having hydrophobicity and a small dimensional change, and a core material 5 on the front and back surfaces of the core material 5. The laminated sheet has a five-layer structure composed of thin sheet layers 7 and 7 made of a vegetable fiber material which are heat-bonded via resin layers 6 and 6 throughout.

The core material 5 is made of a fiber having high dimensional stability against physical forces such as tension and compression and heat such as heating, and high dimensional stability against moisture due to hydrophobicity. As the fibers, for example, glass fibers, aramid fibers, carbon fibers, and polyethylene terephthalate fibers are preferable. The core member 5 has an upper fiber layer 5a made of fibers extending in one direction (for example, the longitudinal direction of the heating floor panel A) and a direction orthogonal to the upper fiber layer 5a (the same width direction).
And a lower fiber layer 5b made of fibers extending in the same direction. The fiber diameter of the core material 5 is preferably 5 to 30 μm, and the basis weight is preferably 100 to 250 g / m ² .

The resin constituting the resin layer 6 is preferably, for example, a polypropylene resin or a polyethylene terephthalate resin, and is interposed in the entire back surface member 4 without gaps. The coating amount is preferably 50 to 150 g / m ² .

The thin sheet layer 7 is made of, for example, kraft paper, nonwoven fabric, or woven fabric, and has a basis weight of 25 to
150 g / m ² is preferred.

The thickness of the back material 4 is set in the range of 0.2 to 2 mm. If the thickness of the backing material 4 is 2 mm or more, the entire heat generating floor plate A is difficult to bend, and it is difficult to cope with steps or unevenness generated in the floor base material, which is not preferable. The thickness of the back material 4 is set by adjusting the basis weight of the fibers of the core member 5, the application amount of each resin layer 6, and the basis weight of each thin sheet layer 7.

The exothermic floor plate A thus constructed is a plywood,
On the floor base panel B of particle board, MDF, etc.
It is constructed by bonding the back material 4 of the heating floor panel A with a normal adhesive such as vinyl acetate or epoxy. At this time, since the backing member 4 is formed of a thin laminate sheet having a thickness of 0.2 to 2 mm, even if the entire heat generating floor plate A becomes thin and the floor base panel B has a step or a minute uneven surface, etc. Good close contact.

The back surface member 4 of the heat generating floor plate A is provided with a core member 5 made of a fiber having a small dimensional change, and resin layers 6 and 6 extending over the entire core member 5 on the front and back surfaces of the core member 5 respectively. Sheet layer 7 made of vegetable fiber material bonded and heated
Since it is a five-layer laminate sheet composed of
Even if the thin sheet layer 7 on the surface attempts to change its size due to moisture absorption or water absorption, the change is suppressed by the fibers of the core material 5 and the resin layer 6, and the dimensional stability of the back material 4 against moisture is improved. For this reason, the heat-generating floor panel A is installed in a place with strong humidity, or even if there is a long-term use environment, the heat-generating floor panel A
Deformation can be stably and reliably prevented.

Incidentally, the present inventors specifically mentioned that the back material (conventional example) composed of the conventional resin-impregnated sheet and the laminated sheet of the present embodiment (the fiber of the core material is glass fiber and the resin layer is polypropylene) (Resin, thin sheet layer is kraft paper)
When the respective dimensional change rates of the back material (Example of the present invention) constituted by the above were measured under the same conditions, the dimensional change rate of the conventional example was about 0.
In contrast to 6%, the dimensional change of the example of the present invention was about 0.3%.
It was 1%, and it was found that the dimensional stability of the back surface material of the present invention with respect to moisture and the like was significantly improved.

Further, since the resin layer 6 is interposed between the core material 5 and the thin sheet layer 7 in the back material 4 without any gap, the resin layer 6 serves as a barrier layer against moisture, and the moisture is removed from the back material 4. Through the heat generating floor plate A. For this reason, it is possible to stably prevent the deterioration and the like of the electric components in the heat generating floor plate A, and to improve the durability thereof.

Further, since the thin sheet layer 7 on the surface of the back material 4 is made of a vegetable fiber material, the sheet layer 7 and the cross members 2, 2
A general-purpose adhesive, such as vinyl acetate, can be used for bonding the heat-generating floor panel A and the floor base panel B, respectively. In addition, since the adhesiveness is good, poor adhesion between the heat generating floor panel A and the floor base panel B and the floor noise associated therewith can be suppressed.

[0036]

As described above, according to the first or second aspect of the present invention, the back material forming a part of the outer member of the heat generating floor plate is provided on both surfaces of the core material made of the fiber having a small dimensional change. A laminated sheet having a structure in which a thin sheet layer of vegetable fiber is heated and adhered to the backing material, the dimensional change due to moisture absorption and water absorption of the vegetable fiber sheet layer is suppressed by the core fiber or resin layer, The surface of the heating floor plate is less likely to deform due to dimensional changes due to moisture in
The moisture can be prevented from penetrating into the heat generating floorboard through the back material,
Therefore, it is possible to stably and surely prevent deformation of the heat generating floor plate and deterioration of electric components inside the heat generating floor plate. In addition, a general-purpose adhesive can be used to bond the thin sheet layer made of the vegetable fiber material on the surface of the backing material to the crosspiece of the heating floor panel and the floor base panel, and the adhesiveness can be improved, and the floor base panel can be improved. This can effectively prevent poor adhesion to the floor and the accompanying floor noise.

According to the third aspect of the present invention, the core material of the back material is any one of glass fiber, aramid fiber, carbon fiber and polyethylene terephthalate fiber.
It is possible to form a tougher back material that is more resistant to moisture and heat.

According to the fourth aspect of the present invention, since the resin layer of the backing material is made of either polypropylene resin or polyethylene terephthalate resin, the backing material has a high moisture-proof effect and is more stable against moisture and heat. can do.

Further, according to the fifth aspect of the present invention, the thin sheet layer of the back material is made of kraft paper, non-woven fabric or woven fabric, so that the adhesion to the floor base panel can be further improved.

[Brief description of the drawings]

FIG. 1 is an enlarged cross-sectional view of a back material of a heat generating floor panel according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a heating floor panel.

FIG. 3 is an exploded perspective view of a heating floor panel.

[Explanation of symbols]

 Reference Signs List A heat-generating floor panel 1 shell member 2 bar material 3 surface material 4 back material 5 core material 5a upper fiber layer 5b lower fiber layer 6 resin layer 7 thin sheet layer 9 heating element 10 heat insulating material

Claims (5)

[Claims] 1. A plurality of crosspieces arranged in parallel with each other in a horizontal direction, a surface material joined between upper surfaces of the crosspieces, and a joint between lower surfaces of the crosspieces In a heat generating floor plate in which a heating element and a heat insulating material are stacked and filled in an outer member including a back material, the back material includes a core material made of a fiber having a small dimensional change,
It is characterized in that the core material has a sheet-like structure composed of a thin sheet layer made of a vegetable fiber material which is heated and bonded to the front and back surfaces of the core material via a resin layer over the entire core material. Heating floorboard. 2. The heat-producing floor panel according to claim 1, wherein the core material of the back material comprises an upper fiber layer made of fibers extending in one direction and a lower fiber layer made of fibers extending in a direction orthogonal to the upper fiber layer. Is a heat-generating floor panel characterized by being laminated and integrated. 3. The heat-producing floor plate according to claim 1, wherein the core material of the back surface material is made of one of glass fiber, aramid fiber, carbon fiber, and polyethylene terephthalate fiber. 4. The heat-producing floor panel according to claim 1, wherein the resin layer of the back surface material is made of either polypropylene resin or polyethylene terephthalate resin. 5. The heat-producing floor panel according to claim 1, wherein the thin sheet layer of the back material is made of any one of kraft paper, nonwoven fabric and woven fabric.