JP2004019284A - Tatami mat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tatami mat, in which a core material formed of a natural material diffusing no volatile substance is used for a tatami padding and which is excellent in antifungal properties, moisture conditioning properties or the like. <P>SOLUTION: The tatami mat 1 uses rush as a material, and has a tatami facing 2 formed as a fabric, in which the rush is woven by hemp yarn and cotton yarn, and the tatami padding 6 composed of the core material 3, which uses thinned-out Japanese cedar as the raw material, in which fibers in a woody section obtained by a spitting treatment and a bark section are compression-molded after the wood of the Japanese cedar is crushed in a chip shape and which is formed in a tabular shape by using a bonding agent using starch as a main component, straw materials 4a and 4b formed by compressing rice straws and activated charcoal sheets 5a and 5b interposed among the core material 3 and the straw materials 4a and 4b respectively. The formed tatami mat 1 is given wood characteristics having excellent antifungal properties of the Japanese cedar, moisture conditioning properties, deodorizing properties, heat-insulating properties and sound absorbing properties or the like. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a tatami mat, and more particularly to a tatami mat using a core material having wood properties such as deodorizing property, antibacterial property, and humidity control property for a tatami floor.
[0002]
[Prior art]
BACKGROUND ART Conventionally, a tatami mat formed of a tatami mat made of rush and a tatami mat made of compressed rice straw is sometimes laid on the floor of a Japanese house. In addition, due to difficulties in obtaining rice straw and soaring rice straw prices, tatami mats have been manufactured in which all or part of the tatami mats are replaced with insulating boards or polystyrene foam cores made from imported materials. Have been. As a result, the production cost of the tatami mats can be kept low, and the weight of the whole tatami mats can be reduced as compared with a tatami mat floor using rice straw.
[0003]
[Problems to be solved by the invention]
However, an insulation board used for a conventional tatami floor often uses an adhesive containing a volatile substance such as formaldehyde when crushing and fibrillating wood and then compression molding. Therefore, when these tatami mats are laid in a room, the above-mentioned volatile substances may gradually diffuse from the tatami mats. In particular, in houses, the proportion of highly airtight materials such as concrete and cement used as building materials is high, and the diffused volatile substances flow into the room for a long time, and as a result, the resident's body breathes, etc. Was likely to be captured by Furthermore, it is known that in a highly airtight room, the humidity tends to increase and the occurrence of ticks and the like increases.
[0004]
Here, examples of the volatile substance other than the above-described formaldehyde include toluene, xylene, paradichlorobenzene, and normal hexane. Ingestion of these substances into the body may lead to chemical hypersensitivity causing various symptoms such as headache, nausea, asthma and atopic dermatitis. That is, the indoor air is contaminated by these volatile substances, which causes so-called "sick house syndrome". In particular, tatami mats using conventional insulation boards have been strongly avoided because of their health and other problems because tatami mats are installed in Japanese-style rooms that are preferred by the elderly.
[0005]
Therefore, the present invention has been made in view of the above circumstances, and has an object to provide a tatami mat having excellent antibacterial properties and humidity control properties while using a core material formed of a natural material without diffusion of volatile substances for a tatami floor. Is what you do.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, a tatami mat according to the invention of claim 1 is obtained by defibrating a tatami mat made of rush and wood having wood properties including antibacterial properties, humidity control properties, and deodorizing properties. A core made of a natural material obtained by compression-molding at least one of the wood fiber and the bark fiber into a plate shape, and a tatami floor having a straw material sandwiching the core from above and below.
[0007]
Here, the core material made of a natural material refers to conifers such as cedar and cypress, and hardwoods such as chestnuts and oaks. Things. Here, a binder derived from a natural product containing starch or the like as a main component is used. Wood properties such as antibacterial properties of the wood are not impaired even in the state of the core material.
[0008]
Therefore, according to the tatami mat of the first aspect of the present invention, the tatami mat made of rush and the tatami mat made of a natural core material and a straw material form a tatami mat having no diffusion of volatile substances harmful to the human body. . Furthermore, it becomes possible to utilize the properties of wood such as antibacterial properties of wood for tatami mats. Therefore, stable quality with less corrosion is maintained even when used in a high-temperature and high-humidity environment.
[0009]
The tatami mat according to the second aspect of the present invention is the tatami mat according to the first aspect, wherein the wood is a conifer including cedar, cypress, cypress, and pine.
[0010]
Therefore, according to the tatami of the second aspect of the present invention, in addition to the action of the tatami of the first aspect of the present invention, softwood such as cedar is used as a raw material for the core material. Here, cedar, hinoki and the like are trees that have been growing in Japan since ancient times, and are known to have excellent wood properties such as antibacterial properties. Therefore, by using these woods as a core material, it is possible to form a tatami mat having excellent wood properties.
[0011]
The tatami mat according to the third aspect of the present invention is the tatami mat according to the first or second aspect, wherein the tatami floor is further provided with an activated carbon sheet in which activated carbon is formed in a sheet shape between the core material and the straw material. It is established.
[0012]
Here, the activated carbon sheet is formed of activated carbon having a deodorizing effect of adsorbing offensive odor components and the like, which is formed of a black fine powder or the like mainly composed of amorphous carbon.
[0013]
Therefore, according to the tatami mat of the third aspect, in addition to the action of the tatami mat of the first or second aspect, the tatami mat is further deodorized by interposing the activated carbon sheet between the core material and the straw material. Is imparted. This makes it possible to adsorb odors and volatile substances harmful to the human body, so that harmful components do not stay in the room.
[0014]
A tatami mat according to a fourth aspect of the present invention is the tatami mat according to any one of the first to third aspects, wherein the tatami floor has at least two or more of the core members, The straw material is formed by alternately stacking.
[0015]
Therefore, according to the tatami mat of the fourth aspect, in addition to the function of the tatami mat of any one of the first to third aspects, the core material and the straw material are formed in a multi-layered structure. Thereby, the surface area of the core material constituting the tatami floor is increased, and the wood properties such as antibacterial properties can be exhibited more efficiently.
[0016]
A tatami mat according to a fifth aspect of the present invention is the tatami mat according to any one of the first to third aspects, wherein the core member has a plurality of through holes.
[0017]
Therefore, according to the tatami mat of the fifth aspect, in addition to the operation of the tatami mat according to any one of the first to third aspects, the surface area of the core material constituting the tatami floor by the perforated through holes is reduced. To increase. Therefore, it is possible to achieve the same effect as the above-described claim 4. In addition, the weight of the entire tatami mat can be reduced.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a tatami mat according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a main part perspective view showing a state where a part of the tatami 1 of the first embodiment is cut, and FIG. 2 is a cross-sectional view showing a configuration of the tatami 1 of the first embodiment. In these figures, the thickness of each layer is drawn slightly different from the actual thickness to simplify the description.
[0019]
As shown in FIGS. 1 and 2, the tatami mat 1 of the first embodiment includes a tatami mat 2 and a tatami floor 6 composed of a core material 3, straw materials 4 a and 4 b, and activated carbon sheets 5 a and 5 b. . Here, the tatami table 2 is made of rush as a raw material, and is formed as a woven fabric in which rush is woven with hemp yarn or cotton thread. On both side edges of the tatami table 2, tatami rims 7 made of woven fabric such as cotton, hemp, and chemical fibers are provided. By sewing the tatami edges 7 to the side surfaces of the tatami floor 6, The tatami mat 2 is attached to the surface of the tatami floor 6. In addition, the tatami mat 7 may be omitted as in the case of no rim or shaved tatami. In this case, the tatami mat 2 is sewn directly to the side surface of the tatami mat floor 6 to sew the surface of the tatami mat floor 6. Installed to wrap.
[0020]
The core 3 used for the tatami floor 6 is made of thinned cedar as a raw material, and after crushing the wood of the cedar into chips, the fiber of the woody part and bark part obtained by defibration is compressed. It is molded and formed into a plate using a binder containing starch as a main component. Therefore, the core material 3 is composed only of a natural material, and does not contain volatile substances harmful to the human body, such as formaldehyde, unlike a conventional insulation board.
[0021]
Here, the cedar has excellent wood properties such as antibacterial properties, humidity control properties, deodorizing properties, heat insulation properties, and sound absorbing properties in the wood itself, and even when formed as the core material 3, the properties can be maintained. Conventionally known. Therefore, the excellent wood characteristics described above are given to the tatami 1 of the first embodiment. Therefore, by laying the tatami mat 1 on the floor, excellent effects such as antibacterial property and humidity control property can be exhibited. The varieties and places of production of the cedar to be used are not particularly limited, but in the tatami mat 1 of the first embodiment, Akita cedar from Akita Prefecture, which has been famous as a place of cedar production since ancient times, has been selected and used. Furthermore, these cedars can be used effectively for wood resources by using thinned wood and scraps generated during the thinning.
[0022]
Further, on the tatami floor 6 of the tatami 1 of the first embodiment, activated carbon sheets 5a and 5b made of activated carbon are disposed so as to be in contact with the upper surface and the lower surface of the core material 3 described above, and the straw materials 4a and 4b.
[0023]
Here, the activated carbon sheets 5a and 5b are for removing an odor component and the like by the excellent deodorizing performance (adsorption performance) of the activated carbon. Further, the straw materials 4a and 4b are formed by compressing rice straw which has been conventionally used as one member constituting a tatami mat.
[0024]
With the above configuration, the tatami mat 1 of the first embodiment has an antibacterial property and a deodorizing property due to the action of the core material 3 and the activated carbon sheets 5a and 5b in which the tatami floor 6 is made of a natural material such as a binder made of cedar and starch. It has excellent properties such as humidity control, heat insulation, and sound insulation. Therefore, unlike the conventional one using insulation board composed of imported materials, it is made of natural material and does not diffuse volatile substances such as harmful formaldehyde, and indoors laid with more excellent wood characteristics It can adsorb and purify air contaminants. This makes it possible to eliminate the factors that cause sick house syndrome.
[0025]
In addition, the occurrence of mites and molds can be suppressed by the antibacterial properties of cedar. Further, since the humidity in the room is kept constant by the humidity control effect of the wood, and the room has functions such as heat insulation and sound absorption, the room in which the tatami mat 1 is laid can be made an environment where residents can easily spend. Particularly, it is possible to provide a safe and comfortable indoor environment for elderly people who prefer a Japanese-style room and infants who should avoid inhaling harmful substances.
[0026]
Furthermore, by the deodorizing performance provided by the cedar and the activated carbon sheets 5a and 5b, it is possible to adsorb and remove malodorous components from the room. Thereby, the effect of deodorizing the smell of tobacco, the smell of the sole and the like is obtained, and the living environment is less likely to deteriorate.
[0027]
In addition, the tatami 1 of the first embodiment can be manufactured by the same manufacturing method as a tatami manufactured conventionally, and does not require new manufacturing equipment or the like. Therefore, there is no need for the cost for introducing a new manufacturing facility or the like, and the manufacturing cost can be made substantially the same as the conventional one.
[0028]
Next, the tatami mat 10 according to the second embodiment of the present invention will be described with reference to FIGS. Here, FIG. 3 is a cross-sectional view illustrating the configuration of the tatami mat 10 of the second embodiment, and FIG. 4 is a perspective view illustrating the configuration of the core members 11a and 11b of the tatami mat 10 of the second embodiment. In the tatami mat 10 of the second embodiment, those having the same functions and configurations as those of the tatami mat 1 of the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0029]
As shown in FIG. 3, the tatami mat 10 of the second embodiment is formed by sandwiching a tatami mat 2 made of rush and two core materials 11a, 11b from upper and lower surfaces with straw materials 12a, 12b, 12c, respectively. And a tatami floor 13 having a multilayer structure. That is, as compared with the tatami 1 of the first embodiment, the tatami mat 1 has a structure in which the two core members 11a and 11b are stacked. Further, as shown in FIG. 4, a plurality of through holes 15 penetrating from the upper surface 14a to the lower surface 14b are provided in each of the above-mentioned core members 11a and 11b in a lattice shape. Here, as the wood used for the cores 11a and 11b, Akita cedar from Akita Prefecture is used as in the first embodiment.
[0030]
With the above configuration, the tatami mat 10 of the second embodiment uses two core members 11 a and 11 b having a plurality of through holes 15 as a part of the tatami floor 13 in addition to the effect of the tatami mat 1 of the first embodiment. Thereby, the surface area of 11a and 11b exhibiting wood properties such as antibacterial properties can be increased. As a result, the area of contact with odorous components and harmful volatile substances increases, and the effect of wood characteristics can be exhibited more efficiently.
[0031]
As described above, the present invention has been described with reference to the preferred first and second embodiments. However, the present invention is not limited to these embodiments, and does not depart from the gist of the present invention as described below. In the above, various improvements and design changes are possible.
[0032]
That is, in the tatami mats 1 and 10 of the first and second embodiments, wood using cedar is shown as the wood used for the core members 3, 11a and 11b, but the present invention is not limited to this. In addition, conifers such as hinoki and hiba and broadleaf trees such as chestnut and hippo may have excellent wood characteristics. Further, two or more of these woods may be mixed to form a core material.
[0033]
Further, in the second embodiment, the case where two core materials 11a and 11b are used has been described. However, the present invention is not limited to this, and the number of core materials used may be increased according to the thickness of the tatami mat 10. Good. In addition, the activated carbon sheets 5a and 5b used in the first embodiment may be interposed between each straw material and the core material. Thereby, the deodorizing property can be further provided to the tatami mat 10 of the second embodiment. Further, the through holes formed in the core members 11a and 11b are not limited to the circular shape shown in the second embodiment, but may have a square shape or an elliptical shape.
[0034]
【The invention's effect】
As described above, the tatami mat according to the first aspect of the present invention can be made a safe tatami mat with no diffusion of harmful volatile substances by using a core material made of a natural material. Furthermore, since the wood characteristics possessed by the wood such as cedar used for the core material can be utilized for the tatami as it is, excellent effects such as antibacterial properties and deodorizing properties can be imparted to the tatami. As a result, a tatami mat capable of maintaining stable quality for a long period of time can be obtained.
[0035]
In the tatami mat according to the second aspect of the present invention, in addition to the effect of the tatami mat according to the first aspect of the present invention, conifers such as cedar, cypress, and hiba are used as wood for the core material. As a result, the tatami mats can enjoy the effects of excellent wood characteristics such as antibacterial properties and humidity control properties possessed by cedar and the like.
[0036]
In the tatami mat according to the third aspect of the invention, in addition to the effect of the tatami mat according to the first or second aspect of the present invention, the deodorizing performance and humidity of the activated carbon are adjusted by providing an activated carbon sheet between the straw material and the core material. Humidity control can further be imparted to the tatami mat. Therefore, the removal of offensive odor components and moisture can be easily performed.
[0037]
The tatami mat according to the fourth aspect of the present invention has a structure in which a tatami floor is laminated using a plurality of core materials in addition to the effect of the tatami mat according to any one of the first to third aspects. The effect of wood properties can be further enhanced by increasing the surface area of the timber.
[0038]
According to the tatami mat of the fifth aspect, in addition to the effect of the tatami mat of any one of the first to third aspects, the surface area of the core material is increased by piercing the through-hole. The same effect as described above can be obtained.
[Brief description of the drawings]
FIG. 1 is an essential part perspective view showing a state where a part of a tatami mat according to a first embodiment is cut off.
FIG. 2 is a cross-sectional view illustrating a configuration of the tatami mat of the first embodiment.
FIG. 3 is a cross-sectional view illustrating a configuration of a tatami mat according to a second embodiment.
FIG. 4 is a perspective view illustrating a configuration of a core material of a tatami mat according to a second embodiment.
[Explanation of symbols]
1, 10 tatami 2 tatami table 3, 11a, 11b core 4a, 4b, 12a, 12b, 12c straw 5a, 5b activated carbon sheet 6, 13 tatami floor 15 through hole

Claims (5)

Tatami mats made from rush,
Antibacterial properties, humidity control, and defibrating wood having wood properties including deodorizing properties, a core material composed of a natural material obtained by compression-molding at least one of the obtained wood fiber and bark fiber into a plate shape, and A tatami floor having a straw material sandwiching the core from above and below. The wood is
The tatami mat according to claim 1, which is a conifer including cedar, cypress, cypress, and pine. The tatami floor is
The tatami mat according to claim 1 or 2, wherein an activated carbon sheet in which activated carbon is formed in a sheet shape is further interposed between the core material and the straw material. The tatami floor is
Having at least two or more core materials,
The tatami mat according to any one of claims 1 to 3, wherein the core material and the straw material are alternately laminated. The core material,
The tatami mat according to any one of claims 1 to 3, wherein a plurality of through holes are formed.

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