JPH10219977A - Thin tatami mat floor and thin tatami mat having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thin tatami mat and a thin tatami mat floor capable of suppressing size contraction by tightening force of a tatami surface and satisfying inherent function of the tatami mat. SOLUTION: With regard to a thin tatami mat, a thin tatami mat floor 1 of the total 15mm or thinner composed of core material 5 fixing a plastic hollow forming body 4 of 7-2mm thick on both the faces of a reinforcing plate 3 composed of a single board of 5-1mm thick, a plywood and a kind or more of the wooden fiber board of density of 0.70-0.90g/cc and a sheet for a tatami mat reverse side 6 is provided and a tatami mat surface 2 is attached thereto. Preferably a cushion paper 8 is seamed on the tatami mat surface side of the material 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin tatami floor used for laying on a flooring or for eliminating a step between Japanese and Western rooms, and a thin tatami mat having the same.

[0002]

2. Description of the Related Art In recent years, wood flooring has been mainly used for floor finishing of houses, because of ease of maintenance, prevention of generation of mold and mites, westernization of living, and the like. Many people ask for the texture of tatami mats, and there are many cases where tatami mats are laid in a corner of the flooring.

[0003] In this case, since the tatami mat is generally thicker than the flooring, the floor height of the tatami room is increased by the difference between the thickness of the tatami mat and the flooring finish. They have been raised, but all are complicated. Therefore, a thin tatami mat is required in order to efficiently eliminate a step between the tatami mat and the flooring. Against this background, demand for so-called thin tatami mats having a thickness of 25 mm or less, more preferably 18 mm or less, has been increasing.

[0004] The structure of a conventional thin tatami mat will be described below. Thin tatami mats are made by fixing a tatami mat floor and a tatami mat surface, and a tatami mat made of natural straw, a wood fiberboard such as an insulation board, and a plastic hollow molded article such as plastic cardboard are used. And those made of foamed plastic are generally used. From the viewpoints of prevention of generation of mold and mite, stability of dimensions and shape when moisture is absorbed, and shape stability against loading, a material in which a plastic hollow molded body is disposed on the front side of a tatami mat of an appropriate core material has become mainstream.

As such a thin tatami mat, a foamed plastic core material and a plastic hollow molded body disposed on the front side of the tatami mat are disclosed in Japanese Utility Model Laid-Open No. 63-27636, Japanese Patent Laid-Open No. 1-27157.
It is exemplified in Japanese Patent Publication No. 3 and the like. Some of these publications are not specifically described as thin tatami mats, but can be considered as an example of thin tatami mats because the thickness can be reduced to 25 mm or less due to the configuration.

[0006] In these publications, in addition to the original functions of tatami mats, such as shape stability against load and good foot contact, based on the compressive strength in the thickness direction of the hollow plastic molded article, lightness, mold and mite It is characterized by no occurrence of moisture and no moisture absorption.

Japanese Unexamined Patent Publication (Kokai) No. Hei 8-1 discloses a method in which a wood fiberboard is used as a core material and a plastic hollow molded body is arranged on the front side of a tatami mat.
No. 58601. In this publication, the thickness of the tatami mat is specified to be 25 mm or less, and the tatami mat has a function such as the inherent comfort of the tatami mat.

[0008]

However, in the above-mentioned conventional structure, the main part of the core material is made of foamed plastic, or a wood fiberboard (JIS) for general-purpose tatami floors.
(T class insulation board specified in A5905), it could not withstand the tightening force of the sewn tatami mat, and there was a problem that dimensional shrinkage occurred in this direction.

When the thickness of the foamed plastic or the wood-based fiberboard for a tatami floor is increased in order to suppress the dimensional shrinkage, the thickness of the plastic molded article becomes relatively thin, so that the compressive strength in the thickness direction is reduced. There was also a problem that the size became large and the foot contact became hard.

[0010]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and provides a veneer having a limited thickness, a plywood, and a density of 0.70 to 0.90 g /.
The core material for tatami floors is composed of a reinforcing plate made of at least one cc wood fiber board and a plastic hollow molded body, thereby suppressing dimensional shrinkage due to the tightening force of the tatami mat and satisfying the original functions of tatami mats. It is an object to provide a thin tatami mat and a thin tatami floor. Therefore, the thin tatami floor of claim 1 of the present invention has a thickness of 5 to 5.
A core made of a plastic hollow molded body with a thickness of 7 to 2 mm fixed to both sides of a reinforcing plate made of at least one kind of a 1 mm veneer, a plywood, and a wood fiberboard having a density of 0.70 to 0.90 g / cc, It is characterized by a thin tatami floor having a total thickness of 15 mm or less, composed of a part sheet.

[0011] The thin tatami floor of the second aspect is characterized in that, in the configuration of the first aspect, cushion paper is adhered to the front side of the tatami mat of the core material.

According to a third aspect of the present invention, the thin tatami mat has a tatami mat and a thickness of 5 to 1 m.
m, veneer, plywood, 0.70-0.90g / cc density wood fiberboard, reinforcing board consisting of at least one kind of wood-based fiberboard. It is a thin tatami mat having a total thickness of 18 mm or less, which is composed of a part sheet.

According to a fourth aspect of the present invention, there is provided the thin tatami mat according to the third aspect, wherein cushion paper is attached to the front side of the tatami mat of the core material.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a thin tatami mat 1 according to the present embodiment includes a thin tatami floor 2 and a tatami mat table 3.
As shown in FIG. 1, the thin tatami floor 2 is composed of a core member 6 in which a plastic hollow molded body 5 is fixed to both sides of a reinforcing plate 4 and a tatami backing sheet 7. A notch 8 is formed in the lowermost part of the thin tatami floor 2, for example, near the frame of the plastic hollow molded body 5 on the back side of the tatami mat 2, and the tatami mat 3 wraps around the back side of the thin tatami floor 2. It is folded into the notch 8.

The reinforcing plate 4 is made of at least one of a veneer having a thickness of 5 to 1 mm, a plywood, and a wood fiberboard having a density of 0.70 to 0.90 g / cc. Each plastic hollow molded body 5 on the front and back of the tatami mat
Has a thickness of 7 to 2 mm. The core material 6 suppresses dimensional shrinkage due to the tightening force of the tatami mat surface while maintaining the original functions of the tatami mat such as shape stability against loading based on the compressive strength in the thickness direction of the plastic hollow molded body 5 and good foot contact. Can be. This is because the density and thickness of the reinforcing plate 4 are specified as described above, and the core 6
This is because it can sufficiently resist the tightening force.

Next, Examples 1 to 10 are shown in Table 1 as specific examples of the present invention. A plastic hollow molded body 5 (Kanecapradan manufactured by Kanegafuchi Chemical Industry Co., Ltd.) having a thickness shown in Table 1 and a veneer, a plywood (JAS (Japanese Agriculture and Forestry Standards) Class 1 Class 2), a wood fiberboard ( JIS A5907
A reinforcing plate 4 made of at least one of the following, a plastic hollow molded body 5 on the back side of the tatami, and a tatami backing sheet 7 (polypropylene sheet manufactured by Kanebuchi Chemical Industry Co., Ltd.) not shown in Table 1. A thin tatami floor having a total thickness of 15 mm or less was produced by mating with vinylon yarn for tatami (JIS L2501 compliant product).

[0017]

[Table 1]

Next, a JAS1 class tatami table 3 is placed on the thin tatami floor 2, and a vinylon yarn for tatami (JISL2501 compliant product)
I came across the frame part. The tatami mat 3 that wraps around the back of the tatami mat
The tatami back sheet 7 and the plastic hollow molded body 5 on the front side of the tatami were cut out by the length thereof so as to fit therein. Then, although not shown in FIG. 1, a JAS1 class tatami edge is placed thereon, and a vinylon yarn for tatami (JIS L2501 compliant product)
Stabbed and back-stitched. According to the above procedure, a thin tatami mat 1 having a total thickness of 18 mm or less including the tatami mat floor 2 and the tatami mat table 3 was produced.

Further, as Comparative Examples 1 to 4, the members shown in Table 1, the plastic hollow molded body 5 on the back side of the tatami mat, and the sheet 7 for the back of the tatami mat, not shown in Table 1, were folded in the same procedure. A thin tatami mat 2 having a total thickness of 18 mm or less was prepared by attaching a tatami table 3 to the tatami mat floor 2. In Comparative Examples 3 and 4, a plastic foam having a density of 0.03 g / cc was used as the reinforcing plate 4 instead of a veneer or a plywood.

The thin tatami mat was allowed to stand at 50 ° C. and 60% humidity for 30 days. Table 2 shows the characteristics of the obtained thin tatami mat 1. The measuring method was based on JIS A5914. As is clear from Table 2, when the thin tatami mat 1 and the thin tatami mat floor 2 of the present embodiment are used, the displacement of the long side of the tatami mat, the thickness displacement of the tatami mat, and the warp of the tatami mat are kept at a level where there is no problem. I understand. On the other hand, in the comparative example, the displacement of the tatami long side length is clearly excessive. As described above, by using the thin tatami mat 1 and the thin tatami mat floor 2 of the present embodiment, it is possible to suppress the dimensional shrinkage of the tatami mat 3 due to the tightening force while maintaining the original function of the tatami mat as desired. You can get tatami mats.

[0021]

[Table 2]

Next, another embodiment of the present invention will be described. As shown in FIG. 2, in this embodiment, cushion paper 9 is arranged between the plastic hollow molded body 5 on the front side of the tatami mat of the core member 6 and the tatami mat 3 in the above embodiment. Hereinafter, as a specific example, Example 1 shown in Table 3 will be described.
1 to 15 will be described.

[0023]

[Table 3]

Cushion paper (MF sheet manufactured by Marusan Paper Co., Ltd.) having the thickness shown in Table 3, single veneer, plywood (JAS1 class 2)
Grade), wood fiberboard (JIS A5907 compliant)
More than one kind, plastic hollow molded body (Kanecapradan manufactured by Kanegafuchi Chemical Industry Co., Ltd.) and sheet for tatami back (polypropylene sheet manufactured by Kanegabuchi Chemical Industry Co., Ltd.) are attached with vinylon yarn for tatami (JIS L2501 compliant product). By doing, veneer, plywood with a thickness of 5 to 1 mm, density 0.70 to 0.90 g / cc
Material comprising a core having a plastic hollow molded body having a thickness of 7 to 2 mm fixed to both sides of a reinforcing plate made of at least one kind of wood-based fiberboard, and a sheet for the back of a tatami mat, and cushion paper on the front side of the tatami mat A thin tatami floor with a total thickness of not more than 15 mm to which is adhered was produced.

Next, a JAS class 1 tatami table 3 was placed on the thin tatami floor 2, and the frame was assembled with vinylon yarn for tatami (JIS L2501 compliant product). Tatami table 3 wrapped around the back of the tatami
Was cut out by the length of the tatami backing sheet 7 and the plastic hollow molded body 5 on the back side of the tatami mat so as to fit inside. Then, a JAS1 class tatami edge (not shown in FIG. 2) is placed on the tatami mat, flat stabbed with vinylon thread for tatami (JIS L2501 compliant product), and back-stitched to a total thickness of 18 cm.
mm was prepared.

As Comparative Examples 5 to 9, the members shown in Table 3 were attached by the same procedure as in Example 1, and a synthetic rubber-based adhesive (KHN manufactured by Konishi Co., Ltd.)
15), the cushion paper 9 (Marusan Seito Co., Ltd. M
F sheet) was bonded to produce a thin tatami floor 2 having a total thickness of 15 mm or less.

Then, the tatami mat 3 was attached to the thin tatami floor 2 in the same procedure as in Examples 11 to 15, thereby producing a thin tatami mat having a total thickness of 18 mm or less. As a comparative example in which the cushion paper 9 was not arranged, the data of Example 1 and Example 2 in Table 2 were diverted.

The thin tatami mat was left for 30 days at 50 ° C. and 60% humidity. Table 4 shows the characteristics of the obtained thin tatami mat 1. The measuring method was based on JIS A5914. As is apparent from Table 4, when the thin tatami mat 1 and the thin tatami mat floor 2 of the present embodiment are used, the displacement of the long side of the tatami mat is kept at a level that does not cause any problem, and the local compression which is an index per foot is shown. It can be seen that the displacement is in an appropriate range. On the other hand, in the comparative example, it can be seen that the local compressive displacement of the one with the cushion paper 9 adhered is in an appropriate range, but the warpage is excessive.

[0029]

[Table 4]

It is considered that this is because the cushion paper 9 and the core material 6 are firmly fixed to each other and there is no so-called play, so that the deformation due to the moisture absorption of the paper is not reflected on the warp of the tatami mat.
In addition, the sheet without the cushion paper 9 (Comparative Example 1)
0, 11) indicate that the local compressive displacement is too small and the foot contact is hard. As described above, by using the thin tatami mat 1 and the thin tatami mat floor 2 of the present embodiment, it is possible to obtain a thin tatami mat capable of suppressing dimensional shrinkage due to the tightening force of the tatami mat table 3 while having the original function of the tatami mat.

As the wood-based fiberboard shown in Table 1 and the like, general-purpose boards such as a hard board specified in JIS A5907 can be used. As the resin of the plastic hollow molded body 5, a general-purpose thermoplastic resin such as polypropylene or polyethylene can be used.

As the hollow structure of the plastic hollow molded body 5, a multi-web structure, a resin sheet having a large number of cylindrical central projections sandwiched between smooth resin sheets, and the like can be used. The thickness of the resin sheet is 1.5 to
0.3 mm is preferred. When the central projection is sandwiched between smooth resin sheets, the sandwiched portion may be of a closed type or an open type. From the viewpoint of discharging moisture, an open type having air permeability is preferable.

As the cushion paper 9 in Table 3, kraft paper, kraft expanded paper, tarpaulin paper, paraffin paper,
Materials used as raw materials for packaging materials, such as polyethylene paper and vinylidene chloride paper, can be suitably used. The thickness is preferably 4 mm or less from the viewpoint of foot contact. 2mm for kraft paper
The following are preferred.

As the sewing thread of the thin tatami mat, general-purpose sewing threads such as a polyethylene tatami mat, a polypropylene tatami mat and a polyester tatami mat can be used in addition to the vinylon tatami mat. Further, the same method as that for a normal tatami mat can be used for the tatami mat of the thin tatami mat.

As the sheet 7 for the back of the tatami mat, a general-purpose sheet such as a polypropylene sheet, kraft paper, or a combination thereof can be used. In addition, as tatami table 3 and tatami edge, J
In addition to AS1 grade products, those made of synthetic resins such as vinyl chloride and polypropylene can also be used. As a method of attaching the tatami table 3, the same method as that of a normal tatami mat can be used. However, when the lower part of the frame for winding the tatami table 3 is cut out, it is preferable that the length of the notch 8 be 50 mm or less from the side of the frame from the viewpoint of maintaining strength and rigidity.

[0036]

The thin tatami floor according to claim 1 of the present invention has a thickness of 5 to 5.
A core made of a plastic hollow molded body with a thickness of 7 to 2 mm fixed to both sides of a reinforcing plate made of at least one kind of a 1 mm veneer, a plywood, and a wood fiberboard having a density of 0.70 to 0.90 g / cc, Since the floor is a thin tatami floor having a total thickness of 15 mm or less, which is composed of a part sheet, there is an advantage that dimensional shrinkage in the thickness direction is less likely to occur, compressive strength is reduced, and foot contact is improved.

In the thin tatami floor of the second aspect, in the configuration of the first aspect, cushion paper is attached to the front side of the tatami mat of the core material, so that there is an advantage that the foot contact is further softened.

The thin tatami mat according to the third aspect has a tatami mat and a thickness of 5 to 1 m.
m, veneer, plywood, 0.70-0.90g / cc density wood fiberboard, reinforcing board consisting of at least one kind of wood-based fiberboard. Since it is a thin tatami mat having a total thickness of 18 mm or less composed of the part sheet and the dimensional shrinkage in the thickness direction, the compressive strength is reduced and the foot contact is improved.

The thin tatami mat according to the fourth aspect of the present invention is the thin tatami mat according to the third aspect of the present invention, in which cushion paper is attached to the front side of the tatami mat of the core material.

[Brief description of the drawings]

FIG. 1 is a schematic vertical sectional view showing a thin tatami mat according to an embodiment of the present invention.

FIG. 2 is a schematic vertical sectional view showing a thin tatami mat according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Thin tatami 2 Thin tatami floor 3 Tatami table 4 Reinforcement board 6 Core material 7 Seat for tatami back 9 Cushion paper

Claims (4)

[Claims] 1. Single veneer, plywood with a thickness of 5 to 1 mm, density 0.70
A core material consisting of a plastic hollow molded body with a thickness of 7 to 2 mm fixed to both sides of a reinforcing plate made of at least one kind of wood fiberboard of 0.90 g / cc and a sheet for the back of a tatami mat A thin tatami floor with a thickness of 15 mm or less. 2. The thin tatami floor according to claim 1, wherein cushion paper is attached to the front side of the tatami mat of the core material. 3. A tatami mat, a veneer having a thickness of 5 to 1 mm, a plywood,
It consists of a core material consisting of a plastic hollow molded body with a thickness of 7 to 2 mm fixed to both sides of a reinforcing plate made of at least one kind of wood fiberboard having a density of 0.70 to 0.90 g / cc, and a sheet for the back of a tatami mat. Thin tatami with a total thickness of 18 mm or less. 4. The thin tatami mat according to claim 3, wherein cushion paper is attached to the front side of the tatami mat on the core material.