JP2018178479A - Tatami - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of a high-function tatami which is provided with a tatami facing using a vinyl chloride and which is now popular in place of a conventional tatami, specifically the easier occurrence of accidents such as falling than the conventional tatami due to a slippery surface, and the inability to reproduce the nature of a rush tatami due to the uniform patterns of the tatami facing.SOLUTION: This tatami has a facing formed so as to have an appearance similar to that of a rush tatami and provide high resistance to a human when walking by embossing tatami-like irregular patterns on a sheet using a vinyl chloride by using a mold in which folds of a type having a length of four layers and a thickness of six layers are randomly arranged.SELECTED DRAWING: Figure 1

Description

  The present invention relates to tatami mats.

  Tatami is a traditional flooring that has been used since ancient times in Japan. The tatami mats have been made by winding a tatami mat table made of rice straw and knitted with omelette. However, in recent years, flooring and carpeting have been pushed as flooring, and the demand for tatami mats is decreasing year by year.

  As a new product aiming to expand demand for tatami mats, a document 1 discloses a tatami mat in which a resin sheet having a tatami-like concavo-convex pattern formed on the surface thereof is superposed and joined to the upper side of a tatami core made of non-hard resin foam. There is. In this tatami mat, the resin sheet to be overlapped and joined to the upper side of the tatami core has a tatami-like concavo-convex pattern formed on the surface, so the appearance is more similar to the conventional tatami mat and the resin sheet Since it is impermeable, it can be easily wiped off even if it spills soy sauce, sauce, juice, etc. It is characterized in that it does not stain like conventional tatami mats. In recent years, the stable supply of cane grass is becoming difficult, and the transition to highly functional tatami mats disclosed in Document 1 is progressing, especially in nursing facilities and hospitals where waterproofness is required. .

JP-A-11-324285

  However, many of these high-performance tatami mats were patterns of simple uniform uneven patterns different from tatami mats, and the eye size of tatami mats was too uniform. Therefore, all eyes were aligned on a straight line, and it had a rather unnatural appearance.

  Furthermore, unlike the traditional herbal material for tatami mat surface, the resin sheet has a low coefficient of friction. Therefore, the highly functional tatami shown in the document 1 is slippery compared to the conventional tatami. In the tatami described in the document 1, although the conventional tatami-like concavo-convex pattern is formed that imitates the conventional tatami mat surface, the sense of balance such as the elderly and the disabled is diminishing because the viewpoint of increasing the friction coefficient is lacking. For the elderly, the risk of falling was large and an issue.

  In the present invention, it is a tatami sheet having tatami-leaf shaped tatami eyes embossed on the surface, and by providing randomness to the size of the tatami eyes, the space between adjacent tatami eyes and tatami eyes It is characterized in that the distance is changed, so that a human feels moderate resistance when walking.

  By giving randomness to the arrangement of the eyes of the tatami mat, the appearance is the same as that of a conventional tatami mat-made tatami mat table, and it is larger when a human walks compared to tatami mats of the type using conventional resin sheets. By feeling resistance, I could obtain a tatami mat that could give a sense of security.

Pattern of tatami mat surface of the present invention

  Hereinafter, the tatami mat of the present invention will be described in detail based on a preferred embodiment shown in the attached drawings.

  FIG. 1 is a diagram showing the size and arrangement of the eyes of the tatami table according to the present invention. As shown in FIG. 1, the tatami 1 of the present invention is formed by laminating and joining a tatami table 3 on the front side of a tatami floor 2 and further integrating a hem 4 by sewing a hem 4 at the tatami edge.

  As the tatami floor 2, it is preferable to use a thermoplastic resin such as ethylene-vinyl acetate copolymer (EVA), ethylene resin, or propylene resin. Besides, it is also possible to use an insulation board formed by compressing a chip of wood, polystyrene having a high cushion property, or the like, or other chemical fiber or thermosetting resin. Furthermore, it is also possible to adopt a tatami core made of conventional rice straw.

  The tatami floor 2 is configured by using these materials or by combining a plurality of plates formed of these materials. The size of tatami floor 2 is determined by the size sold as tatami. In addition, since the size of the tatami mat varies depending on the area, it is preferable to manufacture the tatami mat in a slightly larger size when mass-producing it, and then cut it according to the shipping place.

  Table 3 is a flexible sheet having a thickness of about 0.5 mm to 3 mm and made of a vinyl-based resin such as polyvinyl chloride or an olefin-based resin such as polypropylene. It is possible to add various characteristics to this sheet. For example, nickel-based antibacterial plating, antibacterial coating using silver or copper, or antibacterial resin mixed in resin is used.

  In the tatami mat table 3, by pressing the mold, a tatami-like concavities and convexities that imitate the tatami mat tatami mat surface are formed. Under the present circumstances, if the depth of unevenness, and the thickness of one eye, and length are made uniform, it will give a rather unnatural impression from the regularity. A conventional tatami mat-made tatami mat has a certain randomness naturally because the size of the cinnabar is different one by one, but it is considered that the artificial feeling of orderly arrangement is the cause of the unnaturalness.

  The inventor has developed a concavo-convex pattern that looks natural, and according to the degree of variation in length (length in the long side) and thickness (size in the short side) of the tatami, human feet I found that there was a big difference in the feeling of resistance. In other words, we found that human beings feel a strong sense of resistance if there are more than a certain percentage of the total number of tatami mats that have tatami eyes with values that deviate from the average value of length and thickness by more than a certain amount. .

  About the length of the eyes of the tatami mat, half or more of the eyes of the tatami mats may be different from the average value by 3% or more (the length may be long or short). More preferably, the eye with a length of 103% to 97% (less than 17.5 mm to 16.5 mm or more) of this reference value is taken as the largest band that occupies 40 to 50% of the whole, based on 17.00 mm. And eyes with a length of 109% or more from the reference value are 5% or less, eyes with a length of 103% or more and 109% or less are 20% or more and 25% or less, a length of 91% or more and less than 97% from the reference value An eye having a length of 20% or more and 25% or less, and an eye having a length of 91% or less is 5% or less.

  As for the thickness of the eyes of the tatami mat, it is preferable that the eyes of the tatami mat having a thickness different from the average by 7% or more (which may be thick or thin) be 25% or more. More preferably, an eye having a thickness of 92% or more and less than 107% of the reference value is the largest band occupying 60 to 70% of the whole, with 1.4 mm as the reference value. And eyes with a thickness of 121% or more from this reference value are 3% or less, eyes with a thickness of 114% or more and less than 121% are 1% or more and 5% or less, or 107% or more and 114% or less. Eye with 5% or more and less than 20%, eye with a thickness of less than 92% 86% or more Eye with a thickness of 5% or more and 20% or less, 86% or less 78% or more is 1% or more and 5% or less , And an eye having a thickness of less than 78% is 3% or less.

  It has been empirically found that the combination of thickness and length need not be considered. That is, for the eyes consisting of various combinations such as thick and short eyes, thin and long eyes, and thick and long eyes, each parameter in the above-mentioned range is not limited to the combination of thick eyes and long eyes. You just need to cover it. In addition, even when only one of the thickness and the length of the eyes is separated, it becomes difficult to slip in both the longitudinal direction and the lateral direction of the tatami mat. However, this does not apply to the case where both the thickness and the length of the eyes are separated under the above conditions.

  These tatami mat eyes are embossed to a depth of approximately 0.8 mm to 1 mm. Regarding the definition of depth, the height of the central part, which is the most rising part of the mulberry leaf shape of the tatami, is 0, and the distance to the most eminent part of the mulberry leaf shape.

With regard to the arrangement of the eyes, as shown in FIG. 1, the eyes of the tatami are arranged in a matrix without gaps. This is the same as the conventional tatami mat in outline. The eyes of the tatami mats have the shape of mulberry leaves, but due to the variation in size (length) in the long side direction of the mulberry leaves, the portions arranged in each row are slightly shifted. Due to the variation in size (thickness) of mulberry leaves in the short-side direction, places placed in each row are slightly shaken. This blurring leads to the reappearance of the randomness that a tatami mat woven with lychees inevitably has, and can give a more natural impression.

In particular, when the eyes of the tatami arranged in each row are slightly shaken, the most hot spots of the eyes of the tatami are also deviated. As a result, the angle at which the eyes of the tatami mat and the foot of the human body are in contact is not uniform, and it will be received at various angles, so it feels as if resistance is felt as the human feeling felt. A reference pattern that fits within the above range is established in an area smaller than the tatami table 3 as a method for realizing it, and the reference pattern is spread by the width of the tatami table 3 as a method of realizing it. May be

  Furthermore, in the tatami 1 of the present invention, the arrangement interval between the eyes adjacent to each other in the short side direction of the eyes is 10% wider than the value of the conventional tatami. This is because, by widening the space between the eyes of the tatami mat, the space functions as a groove, and an effect of making the sole easily get stuck is obtained. The incised foot sole interferes with the front and rear eyes of the ditch to increase resistance and as a result, the foot becomes less slippery. The effect of increasing the resistance due to the foot sole function also in the long side direction of the eye, so it becomes less slippery in both the longitudinal and lateral directions of the tatami mat. In the sense of the human side, the groove between the eyes of the tatami is deep and it feels like a grip.

  A constant resistance increase effect can be obtained only by widening the arrangement interval between the adjacent eyes in the short side direction of the eyes. Therefore, even if it is a conventional high-performance tatami mat having no randomness in length and thickness of the tatami mat of the tatami 1 of the present invention (consisting only of eyes having exactly the same length and thickness) In the process of development of the present invention, it has been found empirically that the tatami mat can be made resistant to slipping in the longitudinal direction and the transverse direction by widening the arrangement interval by 10%.

  The resistance increasing effect by the arrangement interval can be sufficiently exhibited if the location having the interval of 0.3 mm or more is half or more. That is, the eyes of the tatami placed next to it may be separated by 0.3 mm or more for half or more of the total number of tatami eyes provided in the tatami sheet. Note that the wider the arrangement interval, the larger the effect of increasing resistance, but if it is too far away it loses its appearance as a tatami mat. Therefore, it is desirable that the distance be less than 0.7 mm even at the widest point.

  The tatami mat 3 and the tatami floor 2 can be joined by a method such as bonding with an adhesive or heat fusion. It is also possible to perform sewing with threads, which is a traditional method.

Hereinafter, the present invention will be more specifically described by way of examples.
A sheet of 2 mm in thickness made of vinyl chloride as a tatami table 3 was embossed using a mold with the eyes of a mulberry-leaf type tatami. The size was 66.93 mm in the longitudinal direction and 55.70 mm in the lateral direction, and 160 mulberry-leaf-shaped tatami mat eyes were disposed in this range. And, the 160 mulberry leaf type tatami eyes have the lengths shown in Table 1.

The 160 mulberry leaf-shaped tatami eyes have the thicknesses shown in Table 2. In addition, the length and the thickness are counted independently for each of the 160 mulberry leaf-shaped tatami eyes.

The 160 mulberry leaf type tatami eyes are arranged at intervals shown in Table 3 in the short side direction.

  The tatami mat 1 using this tatami table 3 was manufactured, and the sensory test about the slipperiness was performed. The sensory experiments were performed on 13 males and 7 females with various body weights and foot sizes, and used the traditional vermicelli tatami mat table, the polyvinyl chloride tatami table with the conventional orderly eyes, and the polyvinyl chloride tatami table of the present invention. The tatami mat was used. In addition, some women could not hear their age and weight.

  There were two points of view, whether it was not slippery or stumbles, and the evaluation was made in five steps. The higher the number, the higher the rating, the less slippery, the more difficult it is to trip. The evaluation was performed in each of the vertical direction and the horizontal direction with bare feet, and as an additional experiment, it was performed in the vertical direction in a state where water droplets are attached to the tatami mat surface. The experiments in which water droplets are attached are assumed to be an environment such as a dressing room, where water vapor or hot water attached to feet is likely to adhere to the surface of the tatami mat, or when tea or the like is spilled. Furthermore, the experiment was also performed in the longitudinal direction with the socks on.

The experimental results are as shown in Table 4.

Table 5 shows the average of the data shown in Table 4. In the dry state, the polyvinyl chloride tatami mat according to the present invention was found to be less slippery than tatami mats using traditional cinnabar in addition to conventional polyvinyl chloride tatami mats, and to be nearly equivalent in stiction. Even in the state where the water droplets were attached, it was found to be less slippery than the conventional polyvinyl chloride tatami mat, although it was inferior to the traditional tatami mat using cinnabar, and it was almost the same in stiction.

  Therefore, the tatami mat using the tatami table 3 of the present invention is significantly less slippery than the conventional polyvinyl chloride tatami mat. In addition, it is possible to maintain almost the same performance as the slipperiness which tends to occur when making it difficult to slip. Since it is resistant to water by using vinyl chloride etc., application to places such as a dressing room such as a hot spring is also possible.

The embodiments of the present invention have been described above, but some or all of the embodiments of the present invention are described as the following appendices.
[Supplementary Note 1]
A tatami table with a mulberry leaf shaped tatami eye embossed on the surface,
A tatami table characterized in that at least 50% or more of the eyes of the tatami adjacent to each other in the direction of the short side with the eyes of the tatami are separated by 0.3 mm or more.
[Supplementary Note 2]
A tatami table with a mulberry leaf shaped tatami eye embossed on the surface,
Using 17.00 mm as a reference value, a feature of the present invention is that the length of the long edge direction of the folding eye is 3% or more away from the reference value, and it occupies 50% or more of the total number of folding eyes. Tatami table to do.
[Supplementary Note 3]
A tatami table with a mulberry leaf shaped tatami eye embossed on the surface,
It is characterized in that, with 1.4 mm as a reference value, the length of the short side direction of the eye of the tatami has a value separated by 7% or more from the reference value, and it occupies 25% or more of the total number of tatami mats Tatami table to be.
[Supplementary Note 4]
A tatami table with a mulberry leaf shaped tatami eye embossed on the surface,
The length of the mulberry leaf in the long side direction is 17.00 mm as a reference value.
5% or less of tatami mats with a length of 109% or more of the standard value
20% or more and 25% or less of tatami mats having a length of 103% or more and 109% or less of the reference value
The eye of tatami mats with a length of 103% to 97% of the reference value is 40 to 50%,
100% or more and 25% or less of the length of the tatami mat having a length of 91% or more and less than 97% of the reference value is 5% or less of the length of the tatami mat having a length of 91% or less of the reference value A tatami table characterized by having a number of tatami's eyes which is a percentage.
[Supplementary Note 5]
A tatami table with a mulberry leaf shaped tatami eye embossed on the surface,
The length in the short side direction of the mulberry leaf is 1.4 mm as a reference value.
3% or less of tatami mats having a thickness of 121% or more of the reference value 1% to 5% or less of a tatami mat having a thickness of 114% to 121% of the reference value 5% or more and less than 20% of the tatami mats having a thickness of 114% or more but 60% to 70% of the tatami mats having a thickness of 92% to 107% of the reference value
5% or more and 20% or less of the size of the tatami mat having a thickness of 92% or less of the standard value is 1% to 5% of the size of the tatami mat having a thickness of 86% or less and 78% or more of the standard value A tatami table characterized in that the tatami mat has a number of tatami eyes of 3% or less and 100% as a whole, which has a thickness of less than 78% of the reference value.
[Supplementary Note 6]
A tatami provided with the tatami table according to any one of supplementary notes 1 to 5.

1 tatami 2 tatami floor 3 tatami table

Claims (6)

A tatami table with a mulberry leaf shaped tatami eye embossed on the surface,
A tatami table characterized in that at least 50% or more of the eyes of the tatami adjacent to each other in the direction of the short side with the eyes of the tatami are separated by 0.3 mm or more. A tatami table with a mulberry leaf shaped tatami eye embossed on the surface,
Using 17.00 mm as a reference value, a feature of the present invention is that the length of the long edge direction of the folding eye is 3% or more away from the reference value, and it occupies 50% or more of the total number of folding eyes. Tatami table to do. A tatami table with a mulberry leaf shaped tatami eye embossed on the surface,
It is characterized in that, with 1.4 mm as a reference value, the length of the short side direction of the eye of the tatami has a value separated by 7% or more from the reference value, and it occupies 25% or more of the total number of tatami mats Tatami table to be. A tatami table with a mulberry leaf shaped tatami eye embossed on the surface,
The length of the mulberry leaf in the long side direction is 17.00 mm as a reference value.
5% or less of tatami mats with a length of 109% or more of the standard value
20% or more and 25% or less of tatami mats having a length of 103% or more and 109% or less of the reference value
The eye of tatami mats with a length of 103% to 97% of the reference value is 40 to 50%,
100% or more and 25% or less of the length of the tatami mat having a length of 91% or more and less than 97% of the reference value is 5% or less of the length of the tatami mat having a length of 91% or less of the reference value A tatami table characterized by having a number of tatami's eyes which is a percentage. A tatami table with a mulberry leaf shaped tatami eye embossed on the surface,
The length in the short side direction of the mulberry leaf is 1.4 mm as a reference value.
3% or less of tatami mats having a thickness of 121% or more of the reference value 1% to 5% or less of a tatami mat having a thickness of 114% to 121% of the reference value 5% or more and less than 20% of the tatami mats having a thickness of 114% or more but 60% to 70% of the tatami mats having a thickness of 92% to 107% of the reference value
5% or more and 20% or less of the size of the tatami mat having a thickness of 92% or less of the standard value is 1% to 5% of the size of the tatami mat having a thickness of 86% or less and 78% or more of the standard value A tatami table characterized in that the tatami mat has a number of tatami eyes of 3% or less and 100% as a whole, which has a thickness of less than 78% of the reference value. A tatami mat provided with the tatami table according to any one of claims 1 to 5.