JP2000064567A - Tatami mat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain a floor surface quality high in size stability by disposing a tatami mat surface on one face of a fiber plate formed by thermally processing non-woven fabric mixing chemical fiber and thermal melting fiber. SOLUTION: Non-woven fabric mixed with thermal melting fiber melting at the time when chemical fiber such as polyester fiber is heated is thermally processed to form a fiber plate 1. A tatami mat surface 2 of woven natural rush is arranged on the surface of the fiber plate 1, and tatami mat edges 3, 3 are provided to compose a tatami mat A. As the result, size stability is high regardless of the change of temperature and humidity, and the tatami mat A capable of maintaining floor surface quality can be obtained. If at least one face of the fiber plate 1 is soft, proper cushioning can be obtained as a tatami mat floor. In addition, if a planar heating element is provided on the lower face of the fiber plate 1, a floor heater can be simply set in an existing Japanese-style room.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tatami mat that is laid on a floor base of a house or the like to form a floor surface. More specifically, it improves dimensional stability and improves floor quality regardless of changes in temperature and humidity. It relates to the technology to be maintained.

[0002]

2. Description of the Related Art Traditionally, tatami mats have been widely used as a floor finishing material which is laid on a floor base of a house to form a floor surface. As shown in FIG. 6, the tatami mat Aa has a thickness of 5 to 60 m by appropriately stacking a straw material, a foamed plastic plate, a wood fiber board, and the like.
A plate material (hereinafter, abbreviated as tatami floor) having a uniform thickness of about m is prepared, and dried grass is used as weft on the surface of the tatami floor 1a
A surface material (hereinafter referred to as a tatami mat) woven by using hemp thread, cotton thread, or the like as a warp is arranged.

Further, conventionally, a tatami mat having a finished thickness of 50 to 60 mm made of straw material has been widely used for the tatami floor 1a. However, in recent years, as a result of a decrease in paddy rice cultivation, it becomes difficult to obtain straw materials, and instead of the straw materials, foamed plastic boards, wood fiber boards, or composite laminated boards thereof are often used for the tatami floor 1a. ing. In addition, from the viewpoint of barrier-free consideration for the elderly, in order to reduce the difference between the Western-style room and the Japanese-style room, the thickness is thinner than the conventional tatami mat (5 to 30 mm).
So-called thin tatami mats that are finished to a certain extent) are becoming popular.

In addition, when heating a floor in a Japanese-style room, it is often the case that a sheet heating element is first installed and a tatami mat is laid on the upper surface of the sheet heating element, and a thin tatami mat is often used to improve thermal efficiency. ing. In a thin tatami mat, a straw material is not used as a tatami floor, but a foamed plastic plate, a non-woven fabric (felt) wood plywood, a wood fiberboard, etc. are mainly used.

[0005]

However, in a thin tatami mat, when the tatami floor is made of wood plywood or wood fiberboard,
The moisture content of the material changes according to the change of humidity in the atmosphere. As a result of the change in the tatami size with the change of the water content, the tatami laying area (tatami group) formed beforehand like tatami mats When the material is spread over the area surrounded by, and the humidity rises compared to the humidity in the atmosphere during laying, the dimensions of the material will increase and push-up phenomenon (ends warp or swelling in the center) will occur. As a result, the floor surface quality is significantly impaired. By the way, when the humidity decreases, the size of the material shrinks, causing a gap phenomenon (a gap occurs between tatami mats).
Occurs, and also in this case, the floor surface quality is significantly impaired.

In the Japanese climate, the humidity fluctuation range is 30 to 8
0%, with a water content of the said material of 5-1
It varies within a width of 3%. In wood plywood, a 1% increase in water content results in a 0.02% increase in size. If the length of one side of the tatami mat is 1800 mm and the water content increases or decreases by 5%, the dimensions increase or decrease by 1.8 mm. In addition, the dimensional fluctuation due to the change in water content of the wood fiberboard is about 2 times that of wood plywood.
And the floor surface quality is impaired.

When the tatami floor is made of a non-woven fabric (felt), it is difficult to process the tatami into a square having an arbitrary size because the shape stability due to external stress is not good. When the tatami mat and the tatami floor are laminated to be processed into a tatami mat, it is necessary to laminate the tatami mat with the tatami mat while tension is applied to the tatami mat (when the tension is not applied, wrinkles occur on the tatami mat). However, since the Young's modulus of the non-woven fabric (felt) is smaller than that of the tatami mat, the size of the tatami becomes smaller and the end portion warps.

Further, generally, in the short side of the tatami mat, the tatami mat has a structure in which the tatami mat is wrapped around from the side surface of the tatami floor to the back surface and fixed on the back surface. It becomes thicker than the part of, and unevenness occurs on the surface.
In order to prevent this unevenness, a part of the non-woven fabric (felt) may be cut out in advance, but it is difficult to process because of its flexibility.

Important advantages of tatami mats are that they have appropriate cushioning properties and good resilience.
If the tatami floor is composed only of wood plywood, the feeling of walking becomes too hard. Therefore, it is necessary to provide a non-woven fabric (felt) between the tatami mat and the wood plywood. The cost is high and the labor for processing is increased. Further, when the tatami floor is composed of only the foamed plastic plate, good restorability cannot be obtained, and the conventional tatami has the above-mentioned various problems.

The present invention has been made in view of the above problems, and an object thereof is to provide a tatami mat which can improve dimensional stability and maintain floor quality regardless of changes in temperature and humidity. And

[0011]

According to a first aspect of the present invention, a non-woven fabric in which a chemical fiber such as a polyester fiber and a hot-melt fiber that melts when heated are mixed is heat-processed to form a tatami mat on one side of the fiber board 1. 2 is provided. According to such a configuration, the tatami floor is a fiberboard 1 formed by heat-processing a non-woven fabric in which a chemical fiber such as polyester fiber and a hot-melt fiber that melts when heated are mixed. It is possible to reduce dimensional changes due to changes in water content due to changes in humidity, such as when using wood plywood or wood fiberboard, improve dimensional stability, and prevent push-up and gap phenomena. In addition, the tatami mat which can maintain the floor surface quality and can maintain the floor surface quality in this manner can be easily manufactured.

In the second aspect, the fiber board 1 is characterized in that at least one surface thereof is soft. With such a configuration, it is possible to obtain an appropriate cushioning property as a tatami mat. In the third aspect, the sheet heating element 6 is provided on the lower surface of the fiber board 1. According to such a configuration, it can be used for floor heating, and it becomes possible to easily install a floor heating device in an existing Japanese room.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a perspective view of a tatami mat A according to the present invention, and FIG. 1B is a longitudinal sectional view of the tatami mat A.

The tatami mat A uses the fiberboard 1 as the tatami mat,
A tatami mat 2 woven of natural grass is arranged on the surface, and tatami edges 3 are provided along the long sides.

The fiber board 1 is made of polyester fiber having a denier of 3 to 10 (the melting point of general polyester resin is about 250).
℃) and the melting point is lower than that of this polyester fiber, 3-1
0 denier low melting polyester fiber (melting point approx. 150 ℃)
A non-woven fabric prepared by mixing 1: 1 with a melting point of 17
It can be manufactured by thermoforming at a temperature of 0 to 200 ° C. In the present embodiment, the mixing ratio of the polyester fiber and the low melting point polyester fiber is 1: 1, but the mixing ratio is not limited to 1: 1.

The fiber board 1 thus obtained has 50
Under a temperature condition of about 100 ° C, the dimensional stability is good, and the dimensional change rate is only about 0.05%. Therefore,
There is no problem in using it not only as a regular tatami mat, but also as a tatami mat for floor heating.

As shown in FIG. 1 (b), the tatami mat A is provided with a notch 4 on the back surface of the short side of the fiber board 1 so that the tatami-mat 2 is wrapped around the fiber board 1 from the side surface to the back surface. When fixed to the back surface, no step is created. The means for providing the notch 4 in the fiberboard 1 can be easily molded by using a mold when the fiberboard 1 is thermoformed. Further, since the fiber board 1 is hard, it can be provided by cutting with a cutter, a saw blade or the like.

2 and 3, the surface of the fiberboard 1 is provided with a large number of irregularities 6 to provide cushioning properties.
It shows a fiberboard 1 with one side softened. The large number of irregularities 6 are molded by the irregularities formed on the surface of the mold.
The unevenness 6 has various forms such as a dimple shape and a groove shape. Then, when used as a tatami floor, an appropriate cushioning property is obtained. Further, the softness can be changed by arbitrarily setting the ratio and size of the unevenness 6.

FIG. 4 shows a soft fiberboard 7 and a hard fiberboard 8.
Are bonded together via the heat-sealing material 9 to soften one side of the fiber board 1.

FIG. 5 is a cross-sectional view of the floor heating system constructed by using the tatami mat A. A heat insulating material 13 made of rigid polystyrene foam resin is laminated on a base plywood 14, and a construction plywood 12 is laminated thereon. Construction plywood 12 is wood screw 1
At 5, the heat insulating material 13 is penetrated and fixed to the base plywood 14. The sheet heating element 6 containing the heater wire 11 is laminated on the construction plywood 12, and the tatami mat A of the present invention is further stacked on the sheet heating element 6.
Are stacked.

In this case, the fiber board 1 is thinned to make the tatami mat A thin so that the tatami mat A, the sheet heating element 6 and the construction plywood 1 are formed.
The total thickness of 2 and the heat insulating material 13 is 55 mm or 6
By setting it to 0 mm, the floor heating device can be easily constructed after removing the existing tatami mat of the existing Japanese-style room, and the floor surface can be installed at the same level as the original floor surface.

[0022]

According to the first aspect of the present invention, a tatami mat is provided on one side of a fiberboard 1 formed by heat-processing a non-woven fabric in which a chemical fiber such as polyester fiber and a hot-melt fiber that melts when heated are mixed. Therefore, the tatami floor is a fiberboard formed by heat-processing a non-woven fabric that is a mixture of chemical fibers such as polyester fibers and hot-melt fibers that melt when heated, and the tatami floor is made of wood plywood or wood fibers. As in the case of using a plate, it is possible to reduce the dimensional change due to the change of moisture content due to the change of humidity, improve the dimensional stability, prevent the push-up phenomenon and the gap phenomenon, and improve the floor surface quality. There is an advantage that a tatami mat that can be maintained and that maintains the floor surface quality can be easily manufactured.

In the second aspect, since at least one surface of the fiberboard is soft, there is an advantage that in addition to the effect of the first aspect, a suitable cushioning property as a tatami floor can be obtained. In the third aspect, since the sheet heating element is provided on the lower surface of the fiberboard, in addition to the effect of the first or second aspect, it can be used for floor heating, and the floor heating device can be easily installed in an existing Japanese-style room. It can be easily installed.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, in which (a) is a partially broken perspective view and (b) is a partially broken sectional view.

FIG. 2 is a cutaway perspective view of the fiber board of the same.

FIG. 3 is a perspective view of another embodiment of the above.

FIG. 4 is a perspective view of another embodiment of the above.

FIG. 5 is a cross-sectional view of a construction example of the above.

FIG. 6 is a partially cutaway perspective view of a conventional example.

[Explanation of symbols]

1 fiberboard 2 tatami mats 6 Sheet heating element

Claims (3)

[Claims] 1. A fibrous plate formed by heat-processing a non-woven fabric in which a chemical fiber such as polyester fiber and a hot-melt fiber that melts when heated are heat-processed, and a tatami-mat is provided on one side of the fiber board. tatami. 2. The tatami mat according to claim 1, wherein at least one surface of the fiberboard is soft. 3. The tatami mat according to claim 1 or 2, wherein a planar heating element is provided on the lower surface of the fiber board.