JP3211207B2 - tatami - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to tatami mats.

[0002]

BACKGROUND OF THE INVENTION In a conventional Japanese house, as shown in FIG. 3, a tatami (4) is laid on a flooring material (3) in a Japanese-style room (1), and a Japanese-style room (1) and a Western-style room (2) are connected. A sill (6) is arranged at the boundary via a raising material (5), and a floor surface material (7) is laid in the Western-style room (2). In such a configuration, the thickness of the tatami (4) is usually about 55 mm, and between the Western-style room (2) and the Japanese-style room (1) is about 30 to 30 mm.
A step (8) of 50 mm occurs. Recently, society has a tendency to age, and such steps (8) are difficult for elderly people to walk,
Or it becomes a serious obstacle for wheelchair driving. Therefore, in order to eliminate such a step, the thickness of the tatami mat (4) is reduced in the Japanese-style room (1) as shown in Fig. 4, and an appropriate thickness is set on the floor base material (3) in the Western-style room (2). Flooring (7) is often installed. Recent tatami (4) is tatami shall be the core of soft fiberboard instead of a conventional straw core for weight reduction is frequently used. However, in such tatami mats using a soft fiber board as the core material, when the thickness is reduced, the difference in shrinkage due to temperature rise on the back side and the front side and the difference in moisture content due to large fluctuations in moisture absorption and desorption between the back side and the front side However, there is a problem that warpage is likely to occur.

[0003]

2. Description of the Related Art As a means for solving such a problem of warping, both sides plastic cardboard soft fibreboard or as shown in prior art Figure 5 <br/> Ranaru tatami core (9) ( Ten,
10) and tatami mat on the front side with cushioning material (11).
A tatami mat (4) is provided, which is stretched with (12), is lined with a moisture-proof sheet (13) on the back side, and has an edge material (14) attached to the edge. The tatami mat (4) is intended to provide strength and rigidity by the plastic cardboard (10, 10) to prevent warpage.

[0004]

In the above conventional structure, when the plastic cardboard (10, 10) is exposed to a high temperature, the plastic cardboard (10, 10) is easily shrunk by residual stress, so that it is impossible to completely prevent the tatami (4) from warping. Further, there is a problem that the plastic cardboard (10, 10) is easily crushed at the corner C, and the tatami (4) becomes a round corner, so that the parting line does not clearly appear.

[0005]

According to the present invention, as a means for solving the above-mentioned conventional problems, a resin-containing paper for reinforcing both upper and lower surfaces of a tatami core material (9A) using a soft fiber board (91A) is used. Ten
A, sandwiched by the 10A), the front side there is provided a tatami (4A) for tatami facing (12A) is stretched. The tatami core material (9
The upper and lower surfaces of A) was sandwiched by the resin-containing paper (10A, 10A), further on the front side through a cushion layer (11A) tatami mat (12
A) is preferable, and the back side is desirably lined with a moisture-proof sheet (13A).

[0006]

1 and 2 show an embodiment of the present invention. Tatami shown in FIG. (4A) and Tatamishinzai (9A),該畳core (9A) of the upper and lower surfaces of the resin-containing paper for reinforcement is interposed between
(10A, 10A) and cushion material on the front side as a cushion layer
It comprises a tatami mat (12A) stretched through (11A), a moisture-proof sheet (13A) lined on the back side, and an edge material (14A) attached to the edge.

[0007]該畳core (9A) is used a soft fiber plate (9 1A) as a material, soft fibreboard (91A) is insulation-thermal effect, soundproofing effect, moisture sorption, the sewing workability Excellent and desirable material. The soft fiber board (91A) is manufactured by papermaking a wood fiber slurry, and has a density of 0.2 to 0.4 g /
cm ³ range. In the present invention, especially when a thin tatami mat (4A) is targeted, the tatami mat core material (9A) is 5 to 25
The thickness is in the range of mm.

When a plastic foam, especially a polystyrene foam (92A) and a soft fiber board (91A) are used in combination, for example, as shown in FIG. The cushioning property is ensured, and the lower side is made of a polystyrene foam plate (92A). In this case, the soft fiberboard (91
The thickness ratio between A) and the polystyrene foam plate (92A) is about 1: 3 to 1: 1.

[0009] The soft fiber board (91A) has the above advantages as the tatami core material (9A), but has a large difference in moisture absorption and desorption on the front and back surfaces because of its excellent moisture absorption and desorption properties. Warpage is likely to occur. Therefore, when the soft fiber board (91A) is used as the tatami core material (9A), the reinforcement with the resin-containing paper (10A) is particularly necessary.

The resin-containing paper (10A) is a paper containing a synthetic resin, a natural resin, or a modified natural resin. Examples of the synthetic resin include polyethylene, polypropylene, ethylene-propylene copolymer, and ethylene-vinyl acetate. Polymer, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyvinyl acetate, fluororesin, thermoplastic acrylic resin, thermoplastic polyester, thermoplastic polyamide,
Thermoplastic synthetic resin such as thermoplastic urethane resin, acrylonitrile-butadiene copolymer, styrene-butadiene copolymer, acrylonitrile-butadiene-styrene copolymer, urethane resin, melamine resin, thermosetting acrylic resin, urea resin, phenol Resins, epoxy resins, thermosetting synthetic resins such as thermosetting polyesters, or the like, or urethane resin prepolymer, epoxy resin prepolymer, melamine resin prepolymer that produces the synthetic resin in place of the above synthetic resin, Prepolymers such as urea resin prepolymer, phenol resin prepolymer, diallyl phthalate prepolymer, acrylic oligomer, polyvalent isocyanate, methacrylic ester monomer, diallyl phthalate monomer, etc., may be impregnated. As the natural resin, for example, rosin, shellac, dammar, gum arabic, lacquer, ammonia rubber, tickle rubber, balsam, sandalack and the like are used, and as a modified natural resin, ester gum and the like are used.

To impregnate the paper with the resin, a method of immersing the paper in a solution or emulsion of the resin, a method of applying or spraying a solution, emulsion or powder of the resin on one or both sides of the paper, A method of adding and mixing an aqueous solution, emulsion, or powder of the resin to form a paper is applied.

As the paper used for the resin-containing paper (10A), any of Western paper and Japanese paper is used. Further, any type of paper such as paperboard, cardboard, chemical pulp paper, and kraft pulp paper is used. In addition to paper, roll paper is also used. The thickness of the resin-containing paper (10A) is usually 1.0 to 2.5.
mm, and desirably, two or more resin-containing papers (10A) are bonded together by bonding.

[0013] The resin-containing paper (10A) is suppressed moisture absorption by resin containing, also when the internal stress is generated by heating and cooling, since it is possible to absorb the internal stress by being shifted fiber 維相 each other slightly It exhibits much better dimensional stability than wood boards, plywood, plastic boards, etc., and has even better sewing workability.

[0014] If the resin-containing paper (10A) is provided with a porosity (15A), when floor heating is performed, heat is easily taken in from the floor into the tatami mats, and the heating efficiency is greatly improved. Since the resin-containing paper (10A) can absorb the distortion caused by heating and cooling by the porous material (15A), the dimensional stability is further improved. In addition, the collapse of the corner naturally does not exist.

The cushioning material (11A) is made of a nonwoven fabric, a fiber woven fabric, a plastic foam or the like, and
(13A) is a polyethylene sheet, polypropylene sheet,
It is made of a plastic sheet such as a polyvinyl chloride sheet, a polyester sheet, and a polyamide sheet.

[0016]

As described above, according to the present invention, even if the tatami is thin, warping can be prevented by the reinforcing effect of the resin-containing paper,
In addition, the resin-containing paper has good sewing workability and does not hinder tatami manufacturing.

[Brief description of the drawings]

1 and 2 show an embodiment of the present invention.

FIG. 1 is a partial sectional view

FIG. 2 is a sectional view of a composite core material. FIGS. 3 to 5 show a conventional example.

FIG. 3 is a cross-sectional view of a boundary between a Japanese-style room and a Western-style room.

FIG. 4 is a cross-sectional view of a boundary between a Japanese-style room and a Western-style room in which a step is eliminated.

FIG. 5 is a partial sectional view of a tatami mat.

[Explanation of symbols]

 4A Tatami 9A Tatami core 10A Resin-containing paper 11A Cushion (cushion layer) 12A Tatami table 13A Moisture proof sheet 15A Porous 91A Soft fiber board

Claims (4)

(57) [Claims] 1. A both the upper and lower surfaces of the mat core material using a soft fibreboard sandwiched by the resin-containing paper for reinforcement, the front side, characterized in that the tatami mat is stretched tatami Wherein the upper and lower surfaces of該畳core pinched by the resin-containing paper, further stretched the tatami mat through the cushion layer on the front side, according to claim 1 lined the moisture-proof sheet on the reverse side
Tatami 3. The tatami mat according to claim 1, wherein the resin-containing paper is provided with a porosity. 4. The tatami mat according to claim 1, wherein the thickness of the tatami mat core material is 5 to 25 mm, and the thickness of the resin-containing paper is 1.0 to 2.5 mm.