JP3062967U - Bamboo charcoal grain-filled tatami floor - Google Patents

Abstract

(57) [Summary] [Problem] To improve the hygroscopicity and appearance characteristics of a tatami floor using rice straw as a main material, increase economic efficiency, and further improve practicality. A backing material (1) is disposed on a lower surface, at least one rice straw layer (2) and an intermediate rice straw layer (3) are laminated thereon, and a plurality of rice straw thin layers (5, 6) are further laminated thereon. 7 and the intermediate rice straw layer 3
And a bamboo charcoal grain a is laid and interposed substantially over the entire surface except the outer periphery between the rice straw layer 5 and the upper portion, and the remaining outer periphery is pressed and suppressed by the upper rice straw layer. I do.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a tatami floor mainly made of rice straw, and more particularly to the tatami floor in which bamboo charcoal grains are sealed in a natural state of rice straw and have a moisture absorbing and odor absorbing property by bamboo charcoal.

[0002]

[Prior art]

 Traditionally, tatami floors were generally made using rice straw, but in recent years tatami floors using insulation boards, polystyrene foam, etc., have been increasingly used instead of rice straw. Was.

[0003] However, tatami floors made of insulation board or polystyrene foam are lightweight and easy to handle, but have insufficient hygroscopicity compared to those using rice straw. In order to supplement bamboo charcoal, bamboo charcoal was also used in combination.Insulation board, polystyrene foam, and insulation board were sequentially laminated on the upper surface of a tatami floor with bamboo charcoal mixed or adhered woven or non-woven fabric. Some tatami floors with bamboo charcoal enclosed in a polystyrene foam layer have been proposed.

[0004] However, the tatami floors using bamboo charcoal use only a small amount of bamboo charcoal, weighing up to 500 g at most, which is one of the most effective in absorbing moisture. There was a problem such as the need for skilled techniques to perform this, so the applicant has taken advantage of the advantages of the tatami floor using rice straw earlier, and from the lower side, rice straw, foam resin board, insulation board, rice straw layer. The bamboo charcoal-grain-filled tatami floor was formed in this order, and bamboo charcoal granules were laid and interposed.

[0005]

[Problems to be solved by the invention]

 However, since the above tatami floors use foam resin boards and insulation boards, the use of rice straw may not always suit the recent tendency to prefer the natural state.

[0006] Therefore, the present invention responds to such a situation, and by using rice straw as a main material, enhances the hygroscopicity and appearance characteristics of the tatami floor, increases the economic efficiency, and improves the practicality. Is intended for

[0007]

[Means for Solving the Problems]

 That is, the tatami floor of the present invention that meets the above-mentioned object has a back surface material arranged on the lower surface, at least one rice straw layer and an intermediate rice straw layer stacked on the lower surface material, and a plurality of rice straw layers further thereon. An upper rice straw layer consisting of a thin straw layer was laminated, and bamboo charcoal grains were laid and interposed almost entirely between the intermediate rice straw layer and the upper rice straw layer except for the outer periphery. It is characterized in that the outer periphery is depressed by an upper rice straw layer.

Here, the upper rice straw layer in the tatami floor is preferably a rice straw layer including a rice straw layer juxtaposed in the longitudinal direction of the tatami floor and a rice straw layer juxtaposed in the width direction of the tatami floor. Also, the bamboo charcoal particles to be enclosed have an average particle size of about 2 to 4 mm, and it is preferable to lay and interpose them at a rate of about 0.8 to 2.0 kg per tatami mat.

[0009]

[Embodiment of the invention]

 Hereinafter, specific embodiments of the tatami floor according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic cross-sectional view of one example of the tatami floor of the present invention. In FIG. 1, 1 is a backing material such as a PVC sheet, a polypropylene sheet, or a rice paddy, and 2 is a cut straw obtained by shredding rice straw. 3 is an intermediate rice straw layer that is also made of cut straw, and 4 is a bamboo charcoal grain a-sealed layer, and 5, 6, and 7 are bamboo charcoal grain enclosing layers 4 5 is a rice straw layer juxtaposed layer called “wabae”, of which 5 is a rice straw layer called “fresh flies” in which rice straws are arranged in the vertical direction, that is, the longitudinal direction of the tatami floor, and 6 is a horizontal direction. In other words, the rice straw layer called “Yoko flies”, in which rice straws are arranged in parallel in the width direction of the tatami floor, and 7 is the rice straw layer, called “Wow flies”, in which rice straws are arranged in both vertical and horizontal directions. On the tatami floor, each layer as described above is provided with a backing material 1 on the lower surface as shown in the figure. The lower rice straw layer 2, the intermediate rice straw layer 3, the bamboo charcoal grain enclosing layer 4, and the upper rice straw juxtaposed layers 5, 6, 7 are sequentially laminated on the upper part.

[0011] Here, the thickness of the rice straw layers 2, 3, 5, 6, and 7 is appropriately distributed according to the final thickness of the tatami floor. In the illustrated example, the middle rice straw layer 3 is the thickest, the lower rice straw layer 2 follows, and the respective layers 5, 6, and 7 of the rice straw juxtaposed layer on the upper surface are thin layers, but not necessarily. It is not restricted to this and can be determined as appropriate. However, thickening the lower and middle rice straw layers is effective in increasing the buffering capacity because pressure is applied to the lower side.

In the upper rice straw juxtaposed layer, the rice straw layers 5 and 6 having different arrangement directions of the rice straw are alternately arranged, which is also very advantageous in reducing the shape collapse. . In this case, the arrangement order of the rice straw layers referred to as “fresh flies” and “horizontal flies” is not limited to the configuration shown in the figure. The layer 5 may be arranged directly above and a layer 5 in which rice straws are arranged in parallel in the longitudinal direction of the tatami floor.

The bamboo charcoal particles a enclosed in the bamboo charcoal particle encapsulating layer 4 are obtained by carbonizing bamboo as a material by a known method, and have an average particle diameter of about 2 to 4 mm, preferably about 3 mm. In general, the outer peripheral portion is dispersed over the entire surface of the intermediate rice straw layer 3 except for about 15 to 20 cm on the upper surface, and is laid out on average. In this case, the remaining portion of the outer periphery of the bamboo charcoal granules is pressed from the upper surface during or after lamination, thereby pushing down the peripheral portion of the lower rice straw layer 5 of the rice straw juxtaposed layer on the upper surface, and the inner bamboo charcoal. Dropping of the particles a from the periphery is prevented.

In addition, the amount of bamboo charcoal granules used in the above is much larger than the conventional 500 g, and 0.8 to 2 kg per tatami mat, usually 1.0 to 1.5 kg is used. . If it is too small, it is difficult to effectively arrange it over the entire surface. Although the particle size is preferably about 3 mm as described above, a fine particle having a small diameter may be mixed in a part, and a particle having a particle size of 2 to 4 mm may be a main part. The thickness of the entire tatami floor is not much different from the conventional tatami floor thickness, and it is a good idea to finish it to about 5 cm. The tatami floor of the present invention constructed as described above is finished with tatami mats 8 made of grass as usual on the rice straw layer 7 on the uppermost surface.

The tatami mat using the tatami mat floor of the present invention thus obtained has an original rice straw feel, is excellent in hygroscopicity and odor absorption, and is effective against mites, molds and the like. By the way, when the tatami mats using the tatami floor of the present invention are compared with tatami mats mainly made of insulation boards, there is a considerable effect on moisture absorption and odor absorption. Admitted.

[0016]

[Effect of the invention]

 According to the present invention, as described above, in a tatami floor mainly made of rice straw, bamboo charcoal grains, preferably having a grain size of about 3 mm, are interposed between an intermediate rice straw layer and an upper rice straw layer. The bamboo charcoal has greatly improved moisture absorption and odor absorption, and the use of rice straw has made it possible to use the rice straw. Inheriting the advantages of the tatami flooring, it also has a moisture absorbing effect, and can greatly improve the practical performance compared to the tatami flooring mainly composed of insulation boards which are currently commercially available. In addition, in the tatami floor of the present invention, the rice straw layers arranged side by side in different directions are combined appropriately and arranged on the upper rice straw layer, so that the outer peripheral part where bamboo charcoal grains do not exist due to the pressing from the upper part. Is pressed to prevent the bamboo charcoal grains from falling off, and the tatami mats are equalized in the forward direction, thereby improving the shape retention and handling.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an example of a tatami floor according to the present invention.

FIG. 2 is a plan view of a bamboo charcoal grain layer portion of the tatami floor according to the present invention.

[Explanation of symbols]

 1 back side 2 lower rice straw layer 3 middle rice straw layer 4 bamboo charcoal grain encapsulation layer 5,6,7 upper rice straw juxtaposition layer 8 tatami mat

Claims (3)

[Utility model registration claims] 1. A backing material is disposed on a lower surface, and at least one rice straw layer and an intermediate rice straw layer are sequentially laminated thereon,
Further, an upper rice straw juxtaposed layer composed of a plurality of thin rice straw layers is laminated thereon, and substantially the entire surface is left except for the outer periphery between the intermediate rice straw layer and the upper rice straw layer. A bamboo charcoal grain-filled tatami floor in which bamboo charcoal grains are attached and interposed, and the remaining outer periphery is pressed down by an upper rice straw layer. 2. An upper rice straw juxtaposition layer comprising a rice straw layer in which rice straws are arranged in a longitudinal direction of a tatami floor and a rice straw layer in which rice straws are arranged in a width direction of a tatami floor. The tatami floor enclosing bamboo charcoal particles according to claim 1. 3. The bamboo charcoal granules have an average particle size of 2 to 4 mm, and are laid and interposed in an amount of about 0.8 to 2.0 kg per tatami mat.
Or the bamboo charcoal grain-filled tatami floor described in 2.