JPH04210071A - Cushion - Google Patents

Abstract

PURPOSE:To provide a bedsore preventing effect in use as a cushion for bedding and a heat preserving effect when the cushion is set in a bath tub and a sauna room by employing a mixture of rubber and a ceramic powder which radiates far infrared rays by heat as raw material. CONSTITUTION:Cushion 1 is made up of a raw material as mixture of rubber with a ceramic powder which radiates far infrared rays when heated. In use for bedding, the cushion works to radiate far infrared rays being heated by body heat and heats a human body to promote the circulation of blood. The cushion for bedding is provided with a through hole 5 for breathing to allow the prevention of bedsore effectively. On the other hand, when the cushion is set in a bath tub or a sauna room, heat preservation is effectively achieved in the bath tub and the sauna room.

Description

[Detailed description of the invention]

[00011

[Industrial Application Field] The present invention relates to a mat, and more specifically, it has a heat retention function by emitting far infrared rays when heated, and has a particularly effective effect on preventing floor slippage when used as a bed mat. It also has a heat retention effect when installed in a bathtub or sauna room. [0002] [Prior Art] Conventionally, mats placed under bed mattresses have simply been made of elastic material to improve sleeping comfort. Although many mats are created with consideration to performance, recently, mats have been proposed in which ventilation channels are provided in a part of the mat to improve air permeability in order to prevent floor slippage.[0003] ] On the other hand, there are cases where mats are installed in bathrooms, etc., but in this case, they are simply installed to prevent slipping. [0004]

[Problems to be Solved by the Invention] As mentioned above, conventional mats mainly function only as rugs, and for example,
In the case of mats to prevent floor slippage, simply improving breathability is not sufficient to prevent floor slippage; promoting blood circulation through heating is more effective in preventing floor slippage. There was no such effect. Also, when installing it in a bathroom, it is preferable to have a function to keep it warm.
Conventional mats did not have this effect. [0005] In view of the above points, the present invention aims to provide a mat that has a heating or heat retention effect by emitting far infrared rays due to the heat applied to the mat, and is safe for the human body. be. Particularly, when the mat is used as a bed mat, the human body is heated by emitting far infrared rays using body temperature, promoting blood circulation and effectively preventing floor shifting. Furthermore, when used as a mat installed in a bathtub, it is heated by the hot water in the bathtub and radiates far-infrared rays to keep the hot water warm. [0006]

SUMMARY OF THE INVENTION The present invention provides a mat made of a material in which rubber is mixed with ceramic powder that emits far infrared rays when heated. [0007] The mixing ratio of the above ceramic powder and rubber is preferably 50 to 60% by weight of rubber and 50 to 40% by weight of ceramic powder. The above ceramic powder contains 50-60% aluminum trioxide, 15-25% silicon dioxide, 2
The main component is 15 to 30% zirconia oxide, and 3
Those containing iron oxide, titanium dioxide, and sodium oxide are preferred. Further, as the rubber, it is preferable to use EPT rubber (ethylene propylene terpolymer) that passes food hygiene standards. [0008] The shape of the mat is such that a large number of small-diameter circular arc-shaped bulges are provided at intervals on the front side of a thin substrate portion of about 3 mm to increase the surface area, and on the back side. Large annular protrusions with the central part of the mat as a fulcrum are provided concentrically at intervals to prevent slipping. Furthermore, the mat for preventing floor slippage has a large number of through holes of extremely small diameters spaced apart from each other. [0009]

[Function] The mat according to the present invention is made of a material mixed with rubber and ceramic powder that emits far infrared rays when heated, so when used as a bed mat, it will not heat up due to body heat. It emits far infrared rays and has the effect of heating the human body and promoting blood circulation. In addition, since the bed mat has through holes for ventilation, it is possible to effectively prevent floor shifting. On the other hand, when installed inside a bathtub or a sauna room, it is possible to effectively keep the inside of the bathtub and sauna room warm. [00101

[Embodiment 1] Hereinafter, the present invention will be explained in detail with reference to the drawings. 1 to 6 show a first embodiment consisting of a mat for a bed, and FIGS. 7 to 11 show a second embodiment consisting of a mat installed in a bathtub or sauna room. [00113 Betting mat 1 according to the above first embodiment
As shown in FIG. 1, a large number of arcuate bulges 3 are formed at required intervals on the surface side 2a of the substrate portion 2, which is a flat plate with a thin wall of about 2 to 6 mm (about 3 mm in this embodiment). It is opened and protruded. On the other hand, as shown in FIG. 2, on the back side 2b,
A plurality of annular protrusions 4 are provided concentrically with the center O of the substrate portion 2 as a fulcrum. The maximum thickness of the mat in the portion having the annular protrusion 4 on the back side and the arcuate bulge 3 on the front side on both sides is approximately twice that of the substrate portion 2 (in this example, approximately 6
millimeters). [0012] The arcuate bulging portions 3 on the front surface side are smoothly bulged out from the surface of the substrate portion 2, and by providing these bulging portions 3, the surface area of the mat is increased. - On the other hand, the annular protrusion 4 on the back surface side is made to protrude from the base plate part 2 at an acute angle, and the diameter of the annular protrusion part 4 on the outer peripheral side is made larger than the width of the base plate part 2, so that the edge of the base plate part 2 The annular protrusion 4 is positioned at. In this way, by providing the annular protrusion 4, the mat 1 is prevented from sliding when it moves back and forth and left and right. [0013] In addition, as shown in the figure, the mat 1 has a penetration having a much smaller diameter (approximately 3 mm in this embodiment) than the arcuate bulges 3 in the area sandwiched between the arcuate bulges 3. A large number of holes 5 are provided at intervals, and these through holes 5 ensure ventilation. [0014] In this embodiment, the overall shape of the mat 1 is rectangular as shown in the figure, and its size is variable depending on the position of use. If necessary, a plurality of mats may be provided and used in a continuous array. [0015] The bed mat 1 of this embodiment is preferably placed between a futon 6 and a mattress 7, as shown in FIG. At that time, it may be spread over the entire area between the futon 6 and the pinerest 7, but it may also be spread only on areas where body electricity is applied and body heat is easily transferred when lying down, such as the back and the lower part of the waist. [0016] The mat 1 is made of a mixture of rubber and ceramic powder. The mixing ratio is about 60% rubber.
Ceramic powder is about 40% by weight. ETP rubber is used as the rubber. In addition, the ceramic powder used is one that emits far infrared rays when heated, and the composition of the ceramic powder used in this example is 56.6% aluminum trioxide, 22% silicon dioxide, and 20% zirconia dioxide. %, iron trioxide 0.1
3%, titanium dioxide 11%, sodium oxide 0.1
It consists of 2%. The above-mentioned rubber and ceramic powder are made by adding ceramic powder to molten resin that becomes the rubber, heating, compressing, and molding the mat to create the above-mentioned shape mat. [0017] As shown in FIG.
When placed between the mattress 7 and the mattress 7, the body temperature of the person on the futon 6 is transmitted and heats the mat 1. Due to the heating, far infrared rays are emitted by the action of the ceramic powder contained in the mat, which heats the human body to a certain degree through the futon 6. The heating promotes blood circulation. Furthermore, since the mat 1 is provided with a large number of fine through holes 5, it has good breathability and has the effect of removing moisture from the futon 7. By combining these removals of moisture and promotion of blood circulation, it is possible to prevent and cure bed slippage that tends to occur in bedridden patients. [0018] The method of using the bed mat 1 is not limited to the above. For example, even when sleeping directly with only a sheet pulled on the surface without placing a futon on the surface, the bed mat 1 has a heat retention and heating effect. It can be used even in this state. Furthermore, by placing the mat 1 under the head, blood circulation in the head can be improved. [0019] The second embodiment shown in FIGS. 7 to 8 mainly shows a mat to be laid in a bathtub and a sauna room. The mat 10 of this embodiment differs from the first embodiment only in that it does not have minute through holes. Since the other parts are the same as those in the first embodiment, the same reference numerals are given and the explanation will be omitted. The mat 10 is attached to a bathtub 11 as shown in FIG.
It can be used by sinking into the bottom of the bathtub, or by placing a seat inside the bathtub 11 on a section 12 as shown in FIG. In these usage conditions, the mat 10 in the bathtub 11
is heated by hot water and body temperature that comes in contact with it and emits far infrared rays, further heating the human body on the mat 10, and at the same time
Prevents hot water from becoming lukewarm. Further, as shown in FIG. 11, when placed on the floor 14 or seat 15 in the sauna room 13, the far infrared rays are emitted by the room temperature and the body temperature that comes into contact with it, heating the human body and heating the room. [00201r Experimental Example] Next, in order to examine the thermal effect of the mat according to the present invention on the human body, two test subjects Changes in skin surface temperature during bathing for a certain period of time were observed using thermography. The actual experiment was conducted by the Product Research Department of Unitika Research Laboratories Co., Ltd. (2-1-1 Yamazaki, Shimamoto-cho, Mishima-gun, Osaka Prefecture). The procedure for this experiment is as follows. [0021] First, to adjust your body temperature before bathing, set the temperature to 37 degrees Celsius.
I took a 2 minute bath in ~40 degrees Celsius water and cooled my body down with a cold shower. Next, they were soaked in a bath with warm water at a temperature of 37 to 40 degrees Celsius for 5 minutes. At that time, the mat according to the present invention was placed under the bathtub, and the participants were seated on the mat so that their palms were also in contact with the mat. Wipe your body thoroughly after bathing, sit quietly indoors, and take a few minutes before bathing, immediately after bathing, 10 minutes after bathing, and 20 minutes after bathing.
Thermography (measurement wavelength 8
~13μm NEC Sanei Thermography 6T6
Measured in 1). The measurement results using thermographic photographs (omitted as they are extremely complicated to illustrate) were as shown in the table below. Regarding the symbols in the table, > indicates that the skin surface temperature of the sample on the left (blank, that is, when bathing in a bathtub without the bath mat of the present invention) is high. ≧ indicates that the skin surface temperature of the left sample is slightly higher. < indicates that the skin surface temperature of the sample on the right (when bathed in a bathtub with the bath mat of the present invention installed) is high. ≦ indicates that the skin surface temperature of the sample on the right is slightly higher. [0022] [Table 1] [0023] As is clear from the above table, subject A's skin surface temperature was higher when he took a bath in which the pass mat of the present invention was installed. In addition, it was confirmed that subject B, like A, had a higher skin surface temperature with the Passmat 10 minutes after bathing, and that the water cooled down more slowly after taking a bath than with the Passmat. [0024] In addition, the far infrared radiation measurement of the mat related to the present invention was carried out by Toray Research Center Kansai Sales Department (
It was held at 1-1-1 Sonoyama, Otsu City, Shiga Prefecture. The measurement method is r
This is an emission spectrum measurement by FT-IR. Device;
I FS-113V (Bruker), detector; D
TSG, light source: OFF, conditions: resolution 8 cm -1 integration number: 512 times, accessory equipment: infrared emission measurement accessory equipment (manufactured by Bruker), reference sample: black body at 42 degrees Celsius and 52 degrees Celsius. The measurement is based on the ratio of the luminescence intensity of each sample (the mat according to the present invention and the mat made of ordinary plastic + glass fiber) to the luminescence intensity of a black body at the same temperature, and the ratio is calculated in the form of a wavelength spectrum for each wavelength. It was measured. From the graph (not shown) of the measurement results, it was found that the mat according to the present invention had a wavelength spectrum that cannot be seen in ordinary FRP mats. From this result, the radiation spectrum, that is, the infrared emission spectrum was measured in the mat according to the present invention, and it was verified that far infrared rays were emitted. [0025]

[Effects of the Invention] As is clear from the above explanation, since the kit according to the present invention emits far-infrared radiation when heated,
When the mat is used as a bed mat, it has heat retaining properties and has the effect of promoting blood circulation. In addition, providing a large number of fine through holes also ensures ventilation, which is particularly effective in preventing floor slippage. Furthermore, when laid as a mat in a bathtub or sauna room, it has various advantages such as heating and heat retention effects, and the ability to delay cooling of the water after bathing.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a first embodiment of a mat according to the present invention.

FIG. 2 is a bottom view of the first embodiment.

FIG. 3 is a front view of the first embodiment.

FIG. 4 is a sectional view taken along line AA of the first embodiment.

FIG. 5 is a sectional view taken along line BB of the first embodiment.

FIG. 6 is a schematic diagram showing an example of use of the first embodiment.

FIG. 7 is a plan view showing a second embodiment of the mat according to the present invention.

FIG. 8 is a bottom view of the second embodiment.

FIG. 9 is an explanatory diagram showing an example of use of the second embodiment.

FIG. 10 is an explanatory diagram showing another usage example of the second embodiment.

FIG. 11 is an explanatory diagram showing yet another usage example of the second embodiment. [Explanation of symbols] 1 Mat 2 Base part 3 Arc-shaped bulging part 4 Annular protrusion 5 Through-hole 10 Mat

[Figure 1]

[Figure 9]

Claims (4)

[Claims] 1. A mat made of a mixture of rubber and ceramic powder that emits far infrared rays when heated. 2. The mixing ratio of the rubber and ceramic powder is 50 to 60% by weight of rubber and 50 to 40% by weight of ceramic powder, and the composition of the ceramic powder is 40 to 60% of aluminum trioxide. 2. The mat according to claim 1, which contains 15 to 25% silicon dioxide, 15 to 30% zirconia dioxide, and additionally iron trioxide, titanium dioxide, and sodium oxide. 3. The mat has a large number of small-diameter arcuate bulges integrally formed on the front side of the thin substrate part, and concentric annular protrusions integrally formed on the back side of the substrate part. The mat according to any one of claims 1 and 2, characterized in that: 4. The mat according to claim 3, wherein a large number of fine through holes are provided between the arcuate bulges of the mat.