JP3302901B2 - Non-slip sheet and tatami mat with non-slip sheet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-slip sheet and a tatami mat with the non-slip sheet. For example, a non-slip sheet is stitched on the lower surface of a mat used in a judo tatami mat or a gym to prevent slippage with the floor.

[0002]

2. Description of the Related Art Conventionally, what is called a chemical tatami mat is known. In this chemical tatami, a core part called a tatami floor is formed of a synthetic resin foam or the like, and a vinyl chloride resin sheet (hereinafter, referred to as “
(Referred to as “PVC sheet”), but because the tatami floor is lightweight, if the PVC sheet covered on the lower surface has low frictional force, it will slide with only a small amount of force. There were drawbacks.

[0003] In addition, for a heavy straw tatami mat whose floor is called a tatami mat floor, a heavy tatami mat made of straw is laid directly on the floor of a gymnasium or the like, and when playing sports such as judo on the tatami mat. The tatami slipped due to the large force acting, which hindered the progress of the game.

In order to solve these drawbacks, Japanese Utility Model Application Laid-Open No. 58-20044 discloses a tatami mat with a non-slip sheet, as shown in FIG. A tatami mat 14 with a non-slip sheet, which is covered with a non-slip sheet 13 made of foamed polyethylene, is disclosed. However, simply covering the foamed polyethylene sheet does not provide a sufficient anti-slip effect, and it has been necessary to provide a sponge layer to compensate for this drawback. In addition, foamed polyethylene sheets have low tear strength,
In some cases, the foamed polyethylene sheet was torn when suturing with the sheet tatami.

[0005] On the other hand, if the slip prevention effect is too strong, it becomes difficult to position the tatami mat when laying it.

The present invention has been made in view of the above-mentioned problems of the prior art, and has an object to provide a sufficient anti-slipping effect and eliminate the need for an additional portion such as a sponge layer. An object of the present invention is to provide a non-slip sheet and a tatami mat with the non-slip sheet, which are hard to be broken at the time of suturing with the tatami mat and are easily aligned.

[0007]

In order to achieve the above object, the gist of the anti-slip sheet according to the present invention is that a woven fabric layer has a vinyl chloride resin layer on one surface, and the surface of the vinyl chloride resin layer has a maximum surface area. By adjusting the composition so that the roughness is equal to or less than a certain value and the vinyl chloride resin layer has an appropriate hardness, all the disadvantages of the conventional anti-slip sheet are eliminated, and it has extremely excellent anti-slip properties. An anti-slip sheet can be provided.

[0008]

DETAILED DESCRIPTION OF THE INVENTION That is, the anti-slip sheet of the present invention has a vinyl chloride resin layer (hereinafter also referred to as a "PVC layer") on one surface of a woven fabric layer. 50-150 plasticizer per 100 parts by weight of vinyl resin
In the non-slip sheet that is blended by weight,
The maximum surface roughness of the vinyl chloride resin layer is 2.0 μm or less. A feature of the tatami mat with a non-slip sheet according to the present invention is that the non-slip sheet having the above-described configuration is sewn on the entire floor surface so that the PVC layer is on the floor side. Further, the non-slip sheet having the above configuration can be sewn so that only the outer peripheral portion on the floor surface side has the PVC layer on the floor surface side. Further, the anti-slip sheet having the above configuration can be sewn so that the PVC layer is on the floor only at the center on the floor.

According to the present invention configured as described above,
A non-slip action is exhibited as follows. By making the surface of the PVC layer of the non-slip sheet a mirror surface having a maximum surface roughness of 2 μm or less, the adhesiveness to the floor surface is improved, and slip is less likely to occur. Further, by setting the maximum surface roughness to 1.0 μm or less, the slip prevention effect is further improved.

When the vinyl chloride layer has an appropriate hardness, it is difficult to slip and the alignment becomes easy. That is, if the amount of the plasticizer to be blended is less than 50 parts by weight with respect to 100 parts by weight of the vinyl chloride resin, the effect of preventing slip is insufficient because the composition is too hard. On the other hand, if the plasticizer is added in excess of 150 parts by weight, it will be too soft, and the slip prevention effect will be too strong to make positioning difficult when laying on the floor. More preferably, when the blending amount of the plasticizer is 80 to 130 parts by weight with respect to 100 parts by weight of the vinyl chloride resin, it becomes easier to spread on the floor.

In addition, since the woven fabric layer is provided, the tear strength is improved, and the woven fabric is not easily torn when sewn to a tatami mat.

[0012] The area of the non-slip sheet should cover the entire surface of the tatami floor if it is desired to obtain a strong frictional force, otherwise it covers a part of the tatami floor. What should I do?

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a non-slip sheet according to the present invention, wherein 1 is a woven fabric layer having a cloth width of 100, and 2 is a vinyl chloride resin layer. The thickness of the woven fabric layer 1 is 0.2 mm, and the thickness of the vinyl chloride resin layer 2 is 0.6 mm. The composition of the vinyl chloride resin layer 2 is as shown in Table 1 below.

[0014]

[Table 1]

The results of measuring the maximum surface roughness of the vinyl chloride resin layer and the maximum surface roughness of the polypropylene sheet currently sewn to the floor of the tatami mat as a non-slip sheet are shown in Table 2 below. It is.

[0016]

[Table 2]

Then, the non-slip sheet 3 having a cross section shown in FIG. 1 was sewn to the entire surface of the tatami mat 4 on the floor side so that the PVC layer side was on the floor side as shown in FIG. Further, as shown in FIG. 3, the non-slip sheet 3 was sewn only to the outer peripheral portion of the tatami mat 4 on the floor surface side so that the PVC layer side was on the floor surface side. Further, as shown in FIG. 4, the non-slip sheet 3 was sewn only to the center of the tatami mat 4 on the floor side so that the PVC layer side was on the floor side.

For comparison, a polypropylene sheet was sutured to the floor of the tatami mat in the same manner as in FIGS.

When a tatami mat with a non-slip sheet was laid on the floor of a gymnasium and a judo competition was conducted, the tatami mat with a non-slip sheet of the present invention did not slide during the competition. However, the tatami mat with the polypropylene sheet may move during the competition, which may hinder the progress of the competition.

[0020]

According to the present invention, a non-slip anti-skid which has a sufficient anti-slipping effect, does not require an additional portion such as a sponge layer, is hardly torn at the time of suturing with a tatami mat, and is simple in alignment. A seat and a tatami mat with the non-slip sheet can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view of a non-slip sheet according to the present invention.

FIG. 2A is a sectional view of an embodiment of the tatami mat with a non-slip sheet according to the present invention, and FIG. 2B is a bottom view thereof.

3 (a) is a sectional view of another embodiment of the tatami mat with a non-slip sheet of the present invention, and FIG. 3 (b) is a bottom view thereof.

FIG. 4 (a) is a sectional view of another embodiment of the tatami mat with a non-slip sheet of the present invention, and FIG. 4 (b) is a bottom view thereof.

FIG. 5 is a sectional view of a conventional tatami mat with a non-slip sheet.

[Explanation of symbols]

 1: Woven fabric layer 2: Vinyl chloride resin layer 3: Non-slip sheet 4: Tatami

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-29325 (JP, U) JP-A 4-129248 (JP, U) JP-A 1-75526 (JP, U) 36396 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) B32B 1/00-35/00 E04F 15/02

Claims (4)

(57) [Claims] 1. A has one vinyl chloride resin layer on the surface of the fabric layer, the composition of the vinyl chloride resin layer, a vinyl chloride resin 1
50 to 150 parts by weight of a plasticizer per 100 parts by weight
Non-slip sheet made of vinyl chloride
A non-slip sheet, wherein the surface maximum roughness of the fat layer is 2.0 μm or less . 2. A tatami mat with a non-slip sheet according to claim 1, wherein the non-slip sheet according to claim 1 is sewn so that a vinyl chloride resin layer is formed on the entire floor surface. 3. A tatami mat with a non-slip sheet according to claim 1, wherein the non-slip sheet according to claim 1 is sewn so that the vinyl chloride resin layer is on the floor only on the outer peripheral portion on the floor. 4. A tatami mat with a non-slip sheet according to claim 1, wherein the non-slip sheet according to claim 1 is sewn so that the vinyl chloride resin layer is on the floor only at the center of the floor.