JP2003213918A - Soundproof flooring with heating function - Google Patents

Abstract

(57) [Summary] [Problem] The total thickness of the floor, the dimension of the surface material at the end of the planar heater block during the floor heating operation without substantially changing the heating efficiency from the planar heater block to the floor surface. The temperature distribution on the floor surface is made uniform while reliably preventing changes. SOLUTION: A heat equalizing sheet 8 and a protection sheet 9 are laminated above and below a planar PTC heater 7 arranged between a surface layer material 2 and a mat member 3, and sub heaters 10 are provided at both ends of the planar PTC heater 7. The heat equalizing sheet 8 and the protective sheet 9 are sealed at both ends of the sub-heater 10, and at least the heat equalizing sheet 8 is extended outward from the seal portion 11 to the vicinity of the side end 3 a of the mat member 3. An extended portion 8a having a length M is formed. The length M of the extension portion 8a is equal to the width N of the sub-heater 10.
It has been shortened by minutes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof flooring material having a heating function, and more specifically, an electric soundproofing material for heating a floor by arranging a planar PTC heater for heating between a surface material and a mat material. It relates to the structure of the floor heating mat.

[0002]

2. Description of the Related Art In general, a direct soundproof floor is constructed by a method of directly sticking a soundproof floor material onto a building board,
The main purpose is to reduce the impact noise on the floor, to reduce the impact force applied to the floor surface and reduce the impact noise transmitted downstairs.

The conventional wooden soundproof floor material used for the construction of this kind of direct-attached soundproof floor is (1) the bending rigidity is reduced by providing the groove portion in the plate material portion, and (2) the cushion material is laminated. Improve the soundproofing performance by reducing the overall spring constant per unit area of the entire floor, and (3) damping vibrations generated by impact by laminating damping materials to provide a shock absorbing effect. ing.

Regarding floor heating, a floor heating panel in which heating means is embedded on the back side of the surface material is well known.

By the way, since the conventional floor heating panel does not consider soundproofing performance, in order to obtain soundproofing performance, it is necessary to stick the existing direct soundproofing floor material onto the panel having the floor heating function. For this reason, the total thickness of the floor is thicker than the surrounding soundproof floor material that does not have a floor heating function, so in condominiums, etc., it was necessary to adjust the floor level by downslabs in the heating section. .

In order to solve such a problem, conventionally,
As shown in FIG. 9, a sheet-like P having electrodes 6 arranged at both ends of a sheet-shaped resistor 5 having a positive temperature coefficient of electric resistance.
The TC heater 7 is formed, the heat equalizing sheet 8 is laminated on the upper surface side of the planar PTC heater 7, and the protective sheets 9 are laminated on the lower surface side of the planar PTC heater 7. The sheet 9 is sealed and the seal portion 1
The planar heater block 4 is constructed by forming a continuous portion 8a having a length M extending from 1 to at least the heat equalizing sheet 8 toward the outer side H and reaching the vicinity of the side end 3a of the mat member 3. There is known a soundproof flooring material 1 ′ configured by laminating a block 4 on a mat material 3 and further laminating and adhering a surface layer material 2 thereon. 46 in the figure is a cushion material. When the above-mentioned sheet-like PTC heater 7 is used as the electric floor heating means, the sheet-like PTC heater 7 serving as a heat source has a sufficiently small thickness with respect to the thickness of the mat member 3. The PTC heater 7 rarely has a great influence on the spring constant of the mat member 3, and by providing the continuous portion 8a composed of the heat equalizing sheet 8, the surface layer member 2
Since the soaking sheet 8 is present on the entire lower surface of the above, the temperature can be prevented from becoming non-uniform.

[0007]

However, in the prior art example of FIG. 9 described above, when the surface layer material 2 made of a wood material is laminated and adhered onto the planar heater block 4, aluminum or the like is used as the heat equalizing sheet 8. Since the metal material is used, the linear expansion of the continuous portion 8a made of the heat equalizing sheet 8 occurs due to the heating during the floor heating operation, while the surface layer material 2 does not change in dimension until the water content decreases. However, there is a problem that the soundproof flooring material 1 exhibits bimetal behavior. That is, the portion of the soaking sheet 8 that is laminated with the planar PTC heater 7 (the portion where the sheet-shaped resistor 5 is present) is bonded to the resin layer that molds the planar PTC heater 7. In the portion, the thermal expansion / contraction of the heat equalizing sheet 8 is small, whereas the length M of the continuous portion 8a (the portion where the sheet-shaped resistor 5 does not exist) formed of the heat equalizing sheet 8 that is not laminated with the planar PTC heater 7 is long. Moreover, the mat member 3 contacting the continuous portion 8a
The rigidity of the portion is low, and the linear expansion due to the heat of the soaking sheet 8 becomes dominant. That is, the linear expansion coefficient of the continuous portion 8a made of the heat equalizing sheet 8 is directly reflected at the end portion of the planar heater block 4, and thus the surface layer material 2 which does not cause dimensional change until the water content decreases. In between, the so-called bimetal behavior is exhibited, and the planar heater block 4
There is a problem that the dimensional change of the surface layer material 2 at the end portion becomes large.

The present invention has been made in view of the above-mentioned problems of the prior art, and the object thereof is to improve the total thickness of the floor and the heating efficiency from the planar heater block to the floor surface. Provide a soundproof floor material with a heating function that can make the temperature distribution on the floor surface uniform without changing the size of the floor heater block while reliably preventing dimensional changes of the surface layer material during floor heating operation. To do.

[0009]

In order to solve the above problems, according to the present invention, a planar heater block 4 is arranged between a surface layer material 2 and a mat member 3, and the planar heater block 4 is , A sheet PTC heater 7 in which electrodes 6 are arranged at both ends of the sheet-like resistor 5, a heat equalizing sheet 8 is laminated on the upper surface side, and a protective sheet 9 is laminated on the lower surface side of the sheet PTC heater 7.
A length of the C heater 7 that seals the heat equalizing sheet 8 and the protective sheet 9 at both ends, and extends at least the heat equalizing sheet 8 outward from the seal portion 11 to the vicinity of the side end 3a of the mat member 3. In a soundproof flooring material with a heating function formed by forming the continuous portion 8a of M, the auxiliary heaters 10 are provided on the outer sides H of the electrodes 6 at both ends of the planar heater block 4, and at both ends of the auxiliary heater 10. The length M of the continuous portion 8a that seals the heat equalizing sheet 8 and the protective sheet 9 and extends at least the heat equalizing sheet 8 outward from the sealing portion 11 is shortened by the width N of the auxiliary heater 10. With this configuration, the length M of at least the continuous portion 8a made of the heat equalizing sheet 8 can be set to the width N of the sub-heater 10 without changing the width of the entire planar heater block 4. Make it shorter Since it is possible to reduce the linear expansion amount of the continuous portion 8a composed of the soaking sheet 8 by heating during floor heating operation, the bimetal behavior exerted on the surface material 2 (soaking sheet due to heating during floor heating operation The linear expansion occurs in the continuous portion 8a composed of 8 while the surface layer material 2 does not undergo a dimensional change until the water content decreases, and as a result, the phenomenon in which the surface layer material 2 is distorted) is reduced. As a result, it is possible to reduce the dimensional change of the surface layer material 2 at the end of the planar heater block 4 with almost no change in the heating efficiency from the planar heater block 4 to the floor surface.
It is not necessary to change the width of the existing planar heater block 4 by attaching, and the heating efficiency of the end of the soundproof flooring 1 can be improved easily and inexpensively, and the temperature distribution on the entire floor surface can be made more uniform. can do.

Further, it is preferable to provide a flexible buffer layer 12 between the surface layer material 2 and the planar heater block 4. In this case, a soaking sheet in which the sheet-shaped resistor 5 does not exist during floor heating operation. Even if the thermal expansion and contraction of the continuous portion 8a composed of 8 becomes large, this thermal expansion and contraction has the flexibility of the buffer layer 12
Will be absorbed by. Therefore, the auxiliary heater 1
By combining 0 with the buffer layer 12 having flexibility, the temperature distribution on the floor surface can be further homogenized while reliably preventing the dimensional change of the surface layer material 2 at the end of the planar heater block 4. .

The flexible buffer layer 12 is preferably an adhesive layer 12C, and in this case, the adhesive layer 12C.
Since the linear expansion behavior of the continuous portion 8a made of the heat equalizing sheet 8 is absorbed by the combination of the auxiliary heater 10 and the adhesive layer 12C, the dimensional change of the surface layer material 2 at the end of the planar heater block 4 can be reliably prevented. However, the temperature distribution on the floor surface can be made more uniform.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the embodiments shown in the accompanying drawings.

As shown in FIG. 1, a soundproof flooring material 1 with a heating function (hereinafter referred to as "soundproofing floor material 1") of the present embodiment includes a surface layer material 2, a mat material 3, and a planar PTC heater 7. The main body is composed of the planar heater block 4 composed of the sub-heaters 10 arranged on both the left and right sides.
2 shows a cutaway perspective view of the soundproof flooring 1, and FIG.
FIG. 3A is a partially cutaway plan view of the soundproof flooring 1.
(B) has shown the GG line sectional view of (a).

The surface layer material 2 is a surface decorative veneer 1 from the front side.
4, a cloth veneer 15 and a plywood 16 are sequentially laminated.
Urethane coating finish is applied to the surface of the surface-coated veneer 14, and concave grooves 13 for reducing bending rigidity are formed at a predetermined pitch at a plurality of positions on the back surface of the plywood 16.

Examples of the mat material 3 include natural fibers such as hemp, cotton and palm, synthetic fibers such as PET, or a fiber mat composed of a mixed fiber thereof and a binder. The thickness of this fiber mat is at least 7
mm or more, and the density is preferably 100 to 300 kg / m ³ . A planar heater block 4 is provided at the center of the surface of the mat member 3.
Is provided with a concave portion 45 for fitting. Further, in this example, a cushion member 46 for damping vibration generated by impact is laminated under the mat member 3. The base material 47 of the soundproof floor material 1 by the mat material 3 and the cushion material 46
Is configured. The cushion material 46 is preferably formed of at least one of a non-woven fabric and a resin foam (closed cell or open cell). For example, the non-woven fabric is made of PET or rayon, or the closed cell resin foam is foamed PE. As the open-cell resin foam, urethane foam or the like is desirable. It is desirable that the cushion material 46 has a thickness of at least 1 mm and a density of 20 to 50 kg / m ³ .

The planar heater block 4 includes a planar PTC heater 7 having electrodes 6 at both ends of a sheet resistor 5 having a positive temperature coefficient of electric resistance, and a planar PT heater 7.
Sub-heaters 10 and 10 respectively arranged on the outer sides H of the electrodes 6 at both ends of the C heater 7 are provided. A soaking sheet 8 is laminated on the upper surface side of the planar PTC heater 7 and the sub-heater 10, and a protective sheet 9 is formed on the lower surface side.
Are stacked. The sub-heater 10 is made of a sheet-shaped resistor, and the soaking sheet 8 and the protective sheet 9 are sealed outside the sub-heater 10, respectively.
1 is provided with a continuous portion 8a that extends at least the heat equalizing sheet 8 toward the outer side H to the vicinity of the side end 3a of the mat member 3, and the length M of the continuous portion 8a is set to the auxiliary heater 10. The width is shortened by N. That is, the length M of the continuous portion 8a made of the heat equalizing sheet 8 is determined by the auxiliary heater 1
It is set shorter according to the width N of zero.

Here, the continuous portion 8a is a soaking sheet 8
It does not need to be a portion where the sheet-like resistor 5 overlaps with the protective sheet 9, and at least the soaking sheet 8 may be provided continuously. It is possible to prevent the occurrence of temperature non-uniformity. Further, in this example, the width dimension of the entire heat equalizing sheet 8 including the continuous portion 8a is substantially the same as the width dimension of the entire soundproof flooring 1, and the planar heater block 4
The wire transmission from the surface layer material 2 to the surface layer material 2 is performed uniformly. Further, the planar heater block 4 including the planar PTC heater 7 and the sub heater 10 is, as shown in FIG.
It is fitted in a concave portion 45 provided on the surface of the mat member 3, and the entire upper surface of the planar heater block 4 is configured to be a flat surface including the continuous portion 8a.

Therefore, the sub-heaters 10 each made of the sheet-shaped resistor 5 are provided on the outer sides H of the electrodes 6 at both ends of the planar heater block 4, and the width N of the sub-heater 10 makes the continuous sheet 8 uniform. Since the length M of the projecting portion 8a is reduced, the length of the continuous projecting portion 8a formed of the heat equalizing sheet 8 does not change the width of the entire planar heater block 4 (that is, the width of the entire heat equalizing sheet 8). Only M can be shortened. Therefore, since the linear expansion amount of the continuous portion 8a made of the soaking sheet 8 due to heating is reduced by the amount that the length M is shortened, the bimetal behavior exerted on the surface material 2 ((heating during floor heating operation is By the soaking sheet 8 the continuous portion 8a
Linear expansion occurs on the other hand, while the surface layer material 2 does not undergo dimensional change until the water content decreases, the phenomenon in which the surface layer material 2 is distorted) is reduced. It is possible to reduce the dimensional change of the surface layer material 2 at the end portion of the planar heater block 4 without substantially changing the heating efficiency from the heater block 4 to the floor surface. Further, since the electrodes 6 provided at both ends of the planar heater block 4 can be shared as the electrodes of the secondary heater 10 made of a sheet-shaped resistor, the structure is simplified, and the secondary heater 10 is located outside the planar heater block 4. The temperature distribution in the entire planar heater block 4 can be made more uniform without changing the width of the planar heater block 4 itself.
If the size of the planar heater block 4 is increased without providing the sub-heater 10, it is necessary to increase the required number of the soundproof flooring materials 1 per unit area. By providing the auxiliary heater 10 without changing the size, it is not necessary to increase the required number of the soundproof flooring materials 1 per unit area, which is simple and inexpensive. When arranged side by side, the auxiliary heater 10 is arranged between the planar heater blocks 4 and 4, so that the heat uniformity of the entire floor surface is not impaired.

Further, in this embodiment, the planar heater block 4 having the planar PTC heater 7 and the sub-heater 10 is fitted in the concave portion 45 of the mat member 3 in a state of being laminated on the mat member 3, The entire upper surface of the heater block 4 including the continuous portion 8a becomes a flat surface, and the surface layer material 2 and the buffer layer 1 are formed.
2 and the planar heater block 4 can be in close contact with each other without a gap, which has an advantage that the temperature distribution can be made more uniform, and further, a floor squeal can be prevented from being generated due to the gap. When the load is applied, the load is not concentrated on one place of the planar heater block 4, and the planar heater block 4 can be prevented from being damaged.

When a fibrous mat is used as the mat member 3, adjustment of the thickness and specific gravity of the base material 47,
Since the degree of freedom in processing on the surface is increased, it is possible to easily obtain the vibration damping effect by reducing the spring constant per unit area of the base material 47 itself and the vibration damping effect by the fiber material. The soundproof performance can be improved while allowing the planar heater block 4 to be housed, and at the same time, the walking feeling and the effect of preventing dents against a load can be improved. Further, since such a fibrous mat also has excellent heat insulating properties, it is possible to efficiently heat the surface layer material 2 and provide floor heating performance even when directly attached to a building board such as a concrete slab. In addition, by stacking the cushion material 46 under the mat material 3, it is possible to further improve the soundproofing performance, secure stable walking performance, and also stable performance against heating by floor heating. Can be maintained.

By the way, a cushioning material 46 (urethane cushioning material in this example) used for direct-adhesion sound insulation floor heating.
Is an open-cell resin foam, and considering the adhesion to the concrete slab at the time of construction, it is necessary to attach a backer material such as polyester non-woven fabric from the viewpoint of adhesiveness and workability such as shifting the position. is there. In this embodiment, a polyester nonwoven fabric with poly-laminate is used as the backer material. This polyester non-woven fabric with poly-laminate is a polyester non-woven fabric with a basis weight of 30 g / m ² and a thickness of 15
It has a two-layer structure in which a resin film of μm is laminated. The following two points can be mentioned for the purpose of laminating this resin film. That is, (a) the urethane cushion material and the polyester non-woven fabric are both permeable to air, and the urethane cushion material cannot be sucked up and conveyed by vacuum at the time of manufacturing. However, the resin film is laminated so that the resin film acts as an air barrier layer, The urethane cushion material can be sucked up by vacuum and transported. (B) Both the urethane cushion material and the polyester non-woven fabric are easily penetrated by the adhesive, so that the construction adhesive permeates at the time of construction and the cushioning property is impaired, so that the soundproofing performance is deteriorated, but the resin film is laminated. As a result, the resin film acts as an adhesive permeation preventive layer and can prevent deterioration of the soundproofing performance of the construction adhesive.

4 and 5 show another embodiment of the present invention. In this example, in addition to the structure in which the length M of the continuous portion 8a made of the heat equalizing sheet 8 in FIG. 1 is shortened by the width N of the sub-heater 10, the length between the surface layer material 2 and the planar heater block 4 is increased. A buffer layer 12 having flexibility is provided. This flexible buffer layer 12 has a thickness of 2 mm or less and a density of 20 to 100 in consideration of heating efficiency from the planar heater block 4 to the surface of the surface layer material 2 and the total thickness of the floor.
kg / m ³ is desirable. Further, the material of the buffer layer 12 is preferably a resin foam (closed cell or open cell) such as urethane foam or calp, or non-woven fabric. Here, in the example of FIG. 4, a case where a calp 12A having a thickness of 1 mm and a density of 100 kg / m ³ is used as the buffer layer 12, and in the example of FIG. 5, a urethane 12B having a thickness of 2 mm and a density of 22 kg / m ³ is used. It shows the case where it is used. The width dimension of the buffer layer 12 may be any size as long as it can cover at least the upper surface of the continuous portion 8a composed of the heat equalizing sheet 8, and in short, the heat equalizing sheet 8
Any structure may be used as long as the buffer layer 12 can absorb the thermal expansion and contraction of the continuous portion 8a.

By interposing the flexible buffer layer 12 such as calp or urethane foam between the surface layer material 2 and the planar heater block 4, uniform heating by heating during floor heating operation is performed. The linear expansion behavior of the continuous portion 8a made of the heat sheet 8 is absorbed by the buffer layer 12, the bimetal behavior exerted on the surface layer material 2 is relaxed, and the dimensional change of the surface layer material 2 can be reduced, and the buffer layer 12 is also provided. The effect of making the temperature distribution of the sub-heater 10 more uniform and the effect of reliably preventing the dimensional change of the surface layer material 2 at the end portion of the planar heater block 4 can be further improved by the combination of the sub-heater 10 and the sub-heater 10. it can. Furthermore, the planar heater block 4
By providing a flexible buffer layer 12 on top,
The buffer layer 12 serves as a peeling layer when the bonded surface layer material 2 is peeled off during repair or replacement, and the force for peeling off the surface layer material 2 is small, which is advantageous in that the peeling work is facilitated. Since the layer 12 has a flexibility of 2 mm or less in thickness, the heating efficiency from the planar heater block 4 to the floor surface and the total thickness of the floor are not significantly impaired, and a down slab or the like is required. There is also an advantage that floor heating of condominiums etc. becomes possible by directly attaching to the concrete slab and eliminating it.

As another example of the buffer layer 12 having flexibility, an adhesive layer 12C shown in FIGS. 6 and 7 may be provided. As the adhesive layer 12C, a configuration in which an acrylic adhesive double-sided tape 40 is attached and laminated as shown in FIG. 6, or a sheet body 42 is attached and laminated on an acrylic adhesive material 41 as shown in FIG. Is mentioned.
Here, the acrylic thickness is preferably 0.1 to 0.5 mm, and when the sheet 42 to be bonded to the acrylic is considered in terms of adhesiveness of the adhesive, prevention of permeation into the adhesive layer 12C, etc., the basis weight 20 A polyester non-woven fabric of -100 g / m ² is preferable. In any case, due to the presence of the adhesive layer 12C between the surface layer material 2 and the planar heater block 4, the linear expansion behavior of the continuous portion 8a composed of the heat equalizing sheet 8 due to heating during floor heating operation. Absorbed by the adhesive layer 12C,
By relaxing the bimetal behavior exerted on the surface material 2,
The total thickness of the floor, the planar heater block 4 without changing the heating efficiency from the planar heater block 4 to the floor surface
It is possible to reduce the dimensional change of the surface layer material 2 at the end portion, and further, by the combination of the adhesive layer 12C and the sub-heater 10, the effect of further homogenizing the temperature distribution by the sub-heater 10 and the planar heater block. The effect of surely preventing the dimensional change of the surface layer material 2 at the four ends can be further improved. Moreover, the adhesive layer 12
By reducing C to a thickness of about 0.1 to 0.5 mm, heating efficiency from the planar heater block 4 to the floor surface, the total thickness of the floor, etc. are not significantly impaired, and down slabs, etc. There is an advantage that floor heating of condominiums etc. becomes possible by directly applying it to the concrete slab.
Since the surface layer material 2 and the planar heater block 4 can be laminated and bonded by using C, there is also an advantage that the productivity of the soundproof floor material 1 is further improved.

[0025]

EXAMPLES Hereinafter, the continuous portion 8 made of the heat equalizing sheet of the present invention
An example of a structure in which the length M of a is shortened by the width N of the auxiliary heater 10 will be described in detail.

The soundproof flooring material 1 of the present embodiment has a thickness of 7 mm and a density of 110 kg / m ³ shown in FIG.
A cushion material 46 made of urethane having a thickness of 2 mm with a polyester non-woven fabric with a poly-laminate having a basis weight of 30 g / m ² is laminated, and the concave portion 45 on the surface of the mat material 3 has a thickness of 1 mm.
The planar heater block 4 is bonded by UV curable hot melt. The cushion material 46 itself is fixed to the floor base with a one-component urethane adhesive (wet weight 500 g / m ² ). Surface layer material 2 has a thickness of 0.23 mm from the front side.
Surface decorative veneer 14 and cloth veneer 1 with a thickness of 0.25 mm
5, plywood 16 having a thickness of 5.5 mm is sequentially laminated,
The surface is coated with urethane similar to the existing soundproof flooring. Here, since the cloth veneer 15 is provided on the back surface of the surface decorative veneer 14 so that the fiber directions are orthogonal to each other, even if the surface layer portion of the plywood 16 is cracked due to changes in temperature and humidity, the surface decorative veneer 14 is unlikely to break. Therefore, it can be suitably used as a finishing material for floor heating and the like. Further, the back surface of the plywood 16 has concave grooves 13 cut in the width direction with a depth of 4 mm and a width of 1.8 mm at a pitch of 15 mm in the longitudinal direction. When providing the buffer layer 12 between the surface layer material 2 and the planar heater block 4, a buffer sheet made of Calpe was bonded to the back surface of the surface layer material 2 using an aqueous vinyl urethane adhesive. The interface between the plywood 16 or the buffer layer 12 and the planar heater block 4 is a one-component urethane adhesive (We).
The weight was fixed at 250 g / m ² ).

The planar heater block 4 has a thickness of 0.7 m at both ends of a sheet-shaped resistor 5 having a thickness of 0.5 mm.
On the upper surface of the planar PTC heater 7 on which the m electrode 6 is arranged,
An insulating PET film having a thickness of 50 μm, an aluminum foil having a thickness of 100 μm, and a heat equalizing sheet 8 made of an insulating PET film having a thickness of 38 μm are laminated, and an aluminum foil having a thickness of 100 μm and a thickness of 100 μm are provided on the lower surface of the planar PTC heater 7. 38 μm insulation P
Each of the protective sheets 9 made of ET film has a thickness of 50
A low melting point resin of μm was fused and laminated. Further, on the outer sides H of the electrodes 6 at both ends of the planar heater block 4, auxiliary heaters 10 each made of a sheet-shaped resistor having a thickness of 0.5 mm and a width of 17.5 mm are provided. While sealing the soaking sheet 8 and the protective sheet 9,
The width N of the sub-heater 10 is equal to the maturing sheet and the protective sheet 9
Of the mat member 3 to the vicinity of the side end 3a of the mat member 3
I tried to reduce the length M. Here, the length M of the continuous portion 8a is set to 1 each as compared with the case where the auxiliary heater 10 is not provided on the outer side H of the electrodes 6 at both ends of the planar heater block 4.
It was shortened by 7.5 mm. The interface between the surface layer material 2 and the planar heater block 4 was fixed using a one-component urethane adhesive (wet weight 250 g / m ² ). Also, mat material 3
Is a material in which PET fiber is the main fiber and PP fiber is the binder in 40% (weight%), and the raw material obtained in the card and heat treatment process is 1 with a clearance of 7.8 mm.
What was hot pressed at 5 ° C. for 90 seconds was used. To form a concave portion 45 for accommodating the planar heater block 4 on the surface of the mat member 3 at the time of the original hot pressing, and to apply an adhesive material for adhering the planar heater block 4 on the surface of the mat member 3. A PET film having a thickness of 12 μm was adhered to the back surface of the mat member 3 at the same time via a LDPE hot melt film having a thickness of 30 μm, and a cushioning member 46 made of urethane having a thickness of 2 mm was simultaneously adhered via an LDPE hot melt film having a thickness of 50 μm.

The evaluation results of the soundproof floor heating of this embodiment are shown in Table 1 below in comparison with the conventional example, and the evaluation of the embodiment is shown in line B of FIG. Line A in FIG. 8 shows a conventional example.

[0029]

[Table 1]

In the present embodiment, the auxiliary heaters 10 made of sheet resistors are provided on the outer sides H of the electrodes 6 at both ends of the sheet heater block 4 without changing the width of the sheet heater block 4 as a whole. By shortening the length M of the continuous portion 8a made of the heat equalizing sheet 8, the linear expansion amount of the continuous portion 8a made of the uniform heat sheet 8 due to heating during floor heating operation is reduced, and the surface layer material 2 is formed. As a result of the reduced bimetal behavior, the dimensional change of the surface layer material 2 was reduced. Further, the heating efficiency from the planar heater block 4 to the floor surface, the total thickness of the floor, etc. were not impaired. Furthermore, without changing the width of the entire planar heater block 4, without increasing the number of floor heating mats required per unit area,
The uniform heating property of the entire planar heater block 4 could be improved.

[0031]

As described above, according to the first aspect of the invention, the sheet heater block is arranged between the surface layer material and the mat member, and the sheet heater block is provided at both ends of the sheet resistor. A heat spreader sheet is laminated on the upper surface side of the sheet-like PTC heater having electrodes arranged on its lower part, and a protective sheet is stacked on the lower surface side thereof, and the sheet sheet PTC heater is sealed at both ends thereof with the sheet sheet. In a soundproof flooring material with a heating function, in which at least a soaking sheet is outwardly extended from the seal portion to form a continuous portion extending to the vicinity of a side end of the mat member, and both end portions of the planar heater block are provided. A sub-heater is provided on the outer side of each of the electrodes, and the soaking sheet and the protective sheet are sealed at both ends of the sub-heater, and at least the soaking sheet is extended outward from the sealing portion. Long Since the shortened by the width of the sub-heater, it is possible to shorten the length of the continuous output portion consisting of soaking the sheet without changing the planar heater block total width,
Since the amount of linear expansion of the continuous part consisting of a soaking sheet due to heating during floor heating operation can be reduced, the bimetal behavior on the surface layer material is reduced, resulting in the total thickness of the floor, from the planar heater block to the floor surface. It is possible to reduce the dimensional change of the surface layer material at the end of the planar heater block with almost no change in heating efficiency to the heater, and it is not necessary to change the width of the existing planar heater block by attaching a sub-heater.
The heating efficiency of the end of the soundproof floor material can be improved easily and inexpensively, the temperature distribution on the entire floor surface can be made more uniform, and the heat uniformity between adjacent planar heater blocks is impaired. There is no such thing.

According to the invention of claim 2, in addition to the effect of claim 1, since a buffer layer having flexibility is provided between the surface layer material and the planar heater block, during floor heating operation. Even if the thermal expansion and contraction of the continuous portion made of the heat-uniforming sheet without the sheet-shaped resistor becomes large, this thermal expansion and contraction will be absorbed by the flexible buffer layer. As a result, the dimensional change of the surface layer material at the end of the planar heater block is surely prevented by the combination of the auxiliary heater and the buffer layer having flexibility, and the temperature distribution on the floor surface is further homogenized. be able to.

In addition to the effect of claim 1, the invention according to claim 3 is characterized in that the buffer layer having flexibility is an adhesive layer, so that the adhesive layer forms a continuous portion of the heat equalizing sheet. The linear expansion behavior is absorbed by the adhesive layer, the bimetal behavior exerted on the surface layer material is relaxed, and the dimensional change of the surface layer material at the end of the planar heater block is reduced.As a result, the surface area is improved by combining the auxiliary heater and the adhesive layer. The temperature distribution on the floor surface can be further homogenized while reliably preventing the dimensional change of the surface layer material at the end of the heater block, and the adhesive layer is used to separate the surface layer material and the surface heater block. It can be laminated and bonded, and the productivity of soundproof flooring can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a soundproof flooring material with a heating function according to an embodiment of the present invention.

FIG. 2 is a cutaway perspective view of the above soundproof flooring.

FIG. 3 (a) is a partially cutaway plan view of the same soundproofing floor material as above,
(B) is a GG line sectional view of (a).

FIG. 4 is a cross-sectional view showing a case in which a buffer layer made of scalp is provided between the surface layer material and the planar heater block of the above.

FIG. 5 is a cross-sectional view showing a case where urethane is used as a buffer layer in the above.

FIG. 6 is a cross-sectional view showing a case where an adhesive layer having a one-layer structure is used as a buffer layer of the same.

FIG. 7 is a cross-sectional view showing a case where an adhesive layer having a two-layer structure is used as the buffer layer in the above.

FIG. 8 is a graph for explaining the dimensional change of the surface layer material due to the floor heating operation in the same as the comparison with the conventional example.

9A is a sectional view of a conventional soundproof flooring material, and FIG. 9B is a perspective view thereof.

[Explanation of symbols]

1 soundproof flooring 2 Surface material 3 mat materials 4-sided heater block 5 Sheet resistor 6 electrodes 7-sided PTC heater 8 soaking sheet 8a Consecutive part 9 Protective sheet 10 Sub heater 11 Seal part 12 Buffer layer 12C adhesive layer Length of M extension part N Sub heater width H outward

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masashi Urano             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company (72) Inventor Masayuki Okusawa             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company (72) Inventor Noritoshi Kameyama             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company (72) Inventor Shinichi Kurokawa             1280 Kamizumi, Sodegaura, Chiba Prefecture Idemitsu Kosan Co., Ltd.             Inside the company F term (reference) 3K034 AA07 AA15 BA01 BA02 BA10                       BA13 BB14 BB15 BC15 BC16                       BC27 BC29 FA13 HA04 HA10                       JA09                 3L072 AA01 AB03 AC02 AD13 AD17

Claims (3)

[Claims] 1. A planar heater block is arranged between a surface layer material and a mat member, and the planar heater block is provided on an upper surface side of a planar PTC heater having electrodes arranged at both ends of a sheet-shaped resistor. The heat equalizing sheet is laminated and the protective sheet is laminated on the lower surface side, the heat equalizing sheet and the protective sheet are sealed at both ends of the planar PTC heater, and at least the heat equalizing sheet is extended outward from the seal portion. In a soundproof flooring material with a heating function in which a continuous portion having a length extending to the vicinity of the side end of the mat material is formed, with auxiliary heaters provided outside the electrodes at both ends of the planar heater block, respectively.
Sealing the soaking sheet and the protective sheet at both ends of the sub-heater, and shortening the length of the continuous part that extends at least the soaking sheet outward from this sealing part by the width of the sub-heater. A soundproof flooring material with a heating function. 2. The soundproof flooring material with a heating function according to claim 1, wherein a flexible buffer layer is provided between the surface layer material and the planar heater block. 3. The soundproof flooring material with a heating function according to claim 2, wherein the buffer layer having flexibility is an adhesive layer.