JPH10196091A - Thin straw mat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain excellent heat transfer by providing a thin straw mat with a specified thickness formed by sticking tatami facing to a base material plate where aluminium sheets are made adhere to both surface and back sides of a core material made by fixing vegetable fiber material such as pulp, wood chips or the like by a binder. SOLUTION: Aluminium sheets are stuck to both surface and back sides of a core material 4 made by a particle board, and a felt as a cushion material is stuck to the surface side aluminium sheet. A tatami facing 2 formed by imitation rush 3 where a tape-like thermoplastic resin is heated and passed through a narrow void to form pellicle on the surface thereof is made adhere to the cushion material. Accordingly, as the thickness of the whole straw mat is small, 25mm or less, the heat transfer coefficient is high, and if it is used as a straw mat for floor heating, warp due to heat and humidity can be lessened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a total thickness of 25 mm.
The following is related to the thin tatami mat.

[0002]

2. Description of the Related Art There have been various methods for heating a room. Gas stoves, electric stoves, electric carpets and the like. However, floor heating is the most excellent in consideration of indoor air purification, room temperature distribution, and the like. In this method, an electric heater or a tube of hot water is passed under the floor, so that the air is not contaminated, and the head can also be heated.

[0003] Most of the floor heating is used in the open space (the floor is not tatami). However, in our country,
There is also a high demand for floor heating in Japanese-style rooms from attachment to tatami mats.

[0004] Despite the high demand, floor heating in tatami rooms is low for the following three reasons. Since the thickness is large (55 mm), the heat transfer coefficient is small and the heating loss is large. Most of the heated heat is not introduced into the room, but only under the floor and inside the tatami mat. Depending on the humidity and temperature, the tatami expands and contracts greatly, creating gaps.

[0005] In order to solve such a drawback, the present applicant has devised a device using a substrate in which an aluminum sheet is attached to a plywood plate, and has filed a patent application.

[0006]

However, in the case of using a plywood, the cost is high and the plywood may be delaminated, which is not perfect.
Therefore, in the art, a tatami mat without the above-mentioned drawbacks has been long-awaited for heating.

[0007]

In view of the above situation, the present inventor has completed the thin tatami mat of the present invention as a result of intensive studies, which is characterized in that the plant fiber material is fixed with a binder. A tatami mat is stuck on a base plate in which an aluminum sheet is adhered to both sides of the core material.
m or less.

[0008] The plant fiber material is composed of plant fibers, such as pulp, wood chips, kanakuzu, wood chips, sawdust and the like. In short, it is sufficient that plant fibers are the main component.

[0009] The binder is used to fix the plant fiber, and is an adhesive, resin, cement, gypsum or the like. In short, the core material is a material obtained by mixing the above-mentioned plant fiber material into a binder in a flowing state, curing the binder in a mold, and molding.

[0010] The feature of this core material is that plant fibers are fixed at random and the directionality is not in principle. These core materials may be commercially available. Examples include the following. Hardboard, semi-hardboard, insulation board, particle board with wood chips hardened with glue, wood with kanakus cemented with pulp fixed with adhesive, depending on the degree of compression and heating. There are wool cement, pulp cement in which pulp is hardened with cement, wood chip cement in which wood is hardened with cement, and gypsum board in which sawdust and pulp are hardened with gypsum.

Next, the thickness of the aluminum sheet is not particularly limited, but is preferably 0.1 to 0.5 mm, and the surface may be subjected to rust prevention such as painting. The aluminum sheet serves to prevent moisture and humidity from entering the core portion. The inventor also experimented with a plastic sheet, but could not use a plastic sheet having a large expansion coefficient depending on temperature. Further, other metals are not preferable because of problems such as weight and cost. Aluminum sheet is
It may be commercially available and does not require special purity or precision.

The above-mentioned core material in which aluminum sheets are adhered to both the front and back surfaces is a base plate, which is the main body of the thin tatami mat of the present invention. What is necessary is just to stick a tatami table on the surface of this. The reason why the overall thickness is set to 25 mm or less is due to a problem of heat conduction during heating and a barrier-free problem of a house recently recommended by the Ministry of Construction and the like.

The tatami mat used here may be an ordinary tatami mat woven from a conventional natural rush, a woven imitation rush made of plastic or paper, or a plastic sheet printed or embossed like a tatami mat. . The tatami mat can be fixed by any method, but the adhesion is the simplest.

Further, in addition to the tatami mat and the base plate, a water absorbing layer or a cushion layer may be provided. That is, a water-absorbing sheet is provided between the tatami mat and the base plate to absorb moisture entering from above the tatami and dew condensation when the temperature is lowered, thereby preventing the occurrence of mold and the like. As this water-absorbing sheet, cardboard or nonwoven fabric,
Alternatively, a material obtained by mixing an adsorbent such as silica gel with the material is preferable. The cushion layer is provided between the tatami mat and the base plate, the back surface of the base plate, or both. The material may be nonwoven fabric, rubber, sponge, or the like. Of course, both the water absorbing layer and the cushion layer may be provided.

[0015] Furthermore, as a prevention of displacement when paving,
A heat-resistant rubber plate or the like may be partially or entirely affixed to the back surface.

Although the thin tatami mat of the present invention is most suitable for floor heating as described above, it is not limited to heating, and various methods of use can be considered, such as being laid between plates and easily made in a Japanese-style room. In particular, when the room is not a room where tatami mats are always spread, storage of the tatami mats becomes easy, and the effect of moisture is very small even during long-term storage.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the embodiments shown in the drawings. FIG. 1 shows the thin tatami 1 of the present invention.
It is a perspective view which shows an example of (1), the longitudinal direction is cut | disconnected and shortened. In this example, the tatami mat 2 is made of a woven imitation rush 3 made of plastic, and the core 4 is made of a particle board. This imitation rush 3 is formed by forming a film on a surface by passing a tape-shaped thermoplastic resin through a narrow space heated and forming a film on the surface. The imitation rush 3 is woven in the same manner as a normal tatami table, and the tatami table 2 is visible on the surface. The thickness is about 20 mm, which is considerably thinner than a normal tatami mat.

FIG. 2 is a sectional view of FIG. A felt 6 is attached as a cushion material to a particle board 4 whose front and back surfaces are covered by an aluminum sheet 5, and a tatami table 2 is adhered thereon. In this example, no water-absorbing layer, back-surface slip prevention device, or the like is used.

[0019]

The present invention described in detail above has the following significant effects. Since the thickness of the entire tatami mat is small (25 mm or less), the heat transfer coefficient is large, and when used as a tatami mat for floor heating, the thermal efficiency is good. Furthermore, since a metal sheet is used, heat transfer that is more than simply thin can be obtained. Good heat transfer lowers the heat source temperature and reduces the risk of low-temperature burns in contact with clothes or futons. As the core material, a material obtained by hardening a vegetable fiber material without directionality is used, so that warpage due to heat or humidity can be greatly reduced. Since the aluminum sheet is adhered, moisture does not enter the core material, and expansion and contraction and warping due to moisture can be prevented. Of course, the effect of thinness, easy storage, etc. are also maintained.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of the tatami mat of the present invention.

FIG. 2 is a sectional view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Thin tatami of the present invention 2 Tatami mat 3 rusha 4 core material 5 aluminum sheet 6 cushion material

Claims (1)

[Claims] 1. A thin tatami mat having a total thickness of 25 mm or less, wherein a tatami mat is adhered to a base plate having an aluminum sheet adhered to both sides of a core material to which a plant fiber material is fixed with a binder.