JPH0295306A - Sheet for bedding - Google Patents

Abstract

PURPOSE:To warm the body and to improve blood circulation so that comfortable sleep is assured by forming far IR radiative ceramics layers liquid- permeably on a base. CONSTITUTION:Far IR radiative ceramics layers 1 are formed liquid-permeably on the base 2. The stock of the far IR radiative ceramics layers 1 is exemplified by materials contg. inorg. oxides such as aluminum oxide, silicon oxide and lithium oxide. The sheet is formed by providing the far IR radiative ceramics layer forming parts 1a formed in patterns and far IR radiative ceramics layer non-forming parts 1b on the base 2 or forming the far IR radiative ceramics layers 1 having 50g/m<2>.hour moisture permeability on the base 2. The area ratio of the far IR radiative ceramics layer non-forming part with respect to the base area is confined within a 3 to 99% range, by which good air permeability and moisture permeability of the base 2 are maintained without being impaired.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to bedding sheets, and more particularly to bedding sheets that can ensure a comfortable sleep.

[Prior art and problems to be solved by the invention] In recent years, the use of far-infrared emitting ceramics, which have the property of absorbing heat and emitting the absorbed heat as far-infrared rays, for bedding sheets and the like has been considered. (Unexamined Japanese Patent Publication No. 59-2891
(See Publication No. 6).

When far-infrared emitting ceramics are used in bedding sheets, etc., the characteristics of the far-infrared emitting ceramics allow them to absorb heat from the human body and radiate the absorbed heat as far-infrared rays, warming the body and improving blood circulation. It is expected to have health benefits such as:

However, in general, when far-infrared emitting ceramics are used for bedding sheets, etc., the far-infrared emitting ceramics impair the good air permeability and moisture permeability of the base (cotton, nylon, etc.) of the bedding sheets, etc. Even if you write
The sweat cannot sufficiently permeate through the bedding sheets, etc., and the sweat accumulates on the bedding sheets, causing discomfort, and even making the bedding sheets unclean and harming health.

The present invention has been made based on the above circumstances.

That is, an object of the present invention is to provide a sheet for bedding that does not impair the good air permeability and moisture permeability of the base, warms the body, improves blood circulation, and ensures a comfortable sleep. The purpose is to

[Means for Solving the Problems] Therefore, the present inventors solved the problems of the prior art and developed a method that warms the body, improves blood circulation, and provides comfort without impairing the good air permeability and moisture permeability of the base. As a result of extensive research to develop bedding sheets that can ensure a good night's sleep, we have arrived at the present invention.

That is, the present invention for solving the above problem is a bed sheet characterized in that a far-infrared emitting ceramic layer is formed on a base so that liquid can pass therethrough (claim 1).
.

The bedding sheet of the present invention includes at least a far-infrared emitting ceramic layer formed on a base.

The materials of the far-infrared emissive ceramic layer include aluminum oxide (All 203), silicon oxide (Si(
b), titanium oxide (Tin), fjIj iron oxide (Fl
1203), potassium oxide (K2O), calcium mide ((:aO), sodium oxide (Na20),
Zirconium oxide (Zr(h), magnesium oxide (M
gO), zinc oxide (ZnO), yttrium oxide (
Y2O2), boron oxide (B203), lead oxide (Pb2
0), and those containing inorganic oxides such as lithium oxide (Li2Q).

For example, the far-infrared emissive ceramic layer may be made of chlorite [(Mg-Fe)6(All-Fe3)2Si40
+o(OH)s].

Amphibole [co2NacHg-Fe2)4cAl-Fe
3-Ti)3s:bo2(OH)2], apatite [Ca5 (F-0 sentence) (PO4)3], diopside [
CaMg(SiOz)2], hedenite [CaFe
(SiO3)z ], Nijirine [NaFe(SiO
x)2], Lithium pyroxene [LiA1 (Si03h
], epidote [Ca2(AJL-Fe)3(SiO
n)3(OH)], fired white porcelain [5i02・AfL20
3.Ha 20] and other powders as necessary.
, silicon carbide (SiC), ferrous oxide (Fen),
A mixture made by adding powders such as magnesia (MgO) and silica (SiOz) can be used as a raw material (far-infrared emitting ceramic).

The far-infrared emitting ceramic layer can usually be formed only from the above-mentioned inorganic material (raw material), but in order to improve the strength of the far-infrared emitting ceramic layer, a binder such as a synthetic resin is added to the raw material. It can be formed by blending with.

Examples of the binder include olefin resins such as polyethylene and polypropylene, polyvinyl alcohol, cellulose resins, acrylic resins, amide resins,
Examples include urethane resins and polyester resins.

Such a far-infrared emitting ceramic layer is formed on the base so that liquid can pass therethrough.

A bedding sheet in which a far-infrared emissive ceramic layer is formed on a base so that liquid can pass therethrough includes (1) a pattern-formed far-infrared emissive ceramic layer-formed area and a far-infrared-emissive ceramic layer-free area; Bedding sheets provided on the base (claim 2), and (2) moisture permeable 5 on the base.
A bedding sheet (claim 3) characterized in that it is formed with a far-infrared emitting ceramic layer having a radiation density of 0 g/m2·hour or more can be mentioned.

Claim 2 will be explained below.

The far-infrared emissive ceramic layer forming part is a part where a far-infrared emitting ceramic layer is formed on the base, and the far-infrared emitting ceramic layer non-forming part is a part where a far-infrared emitting ceramic layer is not formed on the base. .

The far-infrared emitting ceramic layer non-forming part has a part that allows gas to pass through and liquid such as sweat to pass through.

The area ratio of the far-infrared emitting ceramic layer-free portion to the base area is usually 3 to 99%, preferably 30 to 70%.

When the area ratio of the far-infrared emitting ceramic layer-free portion to the base area is within the range of 3 to 99%, good air permeability and moisture permeability of the base are not impaired.

In the present invention, the far-infrared emitting ceramic layer forming portion forms a pattern.

Here, the pattern means letters, figures, symbols, etc., and the purpose is to eliminate the far-infrared emissive ceramic layer formed portion that is formed over almost the entire surface of the sheet.

As far as the above meaning is concerned, there is no particular restriction on the pattern, and the far-infrared emitting ceramic layer forming portion forms an appropriate pattern.

Examples of the pattern formed by the far-infrared emitting ceramic layer forming section include (1) a polka dot pattern formed by the far-infrared emitting ceramic layer forming section 18, as shown in Fig. 1 [11];
As shown in FIG. 1 [2], a striped pattern formed by the far-infrared emissive ceramic layer forming part 1a; ■ As shown in FIG. 1 [3], a lattice pattern formed by the far-infrared emissive ceramic layer forming part 1a; As shown in FIG. 1 [4], a camouflage lattice pattern formed by the far-infrared emissive ceramic layer forming portion 1a; ■ As shown in FIG. 1 [5], a checkered pattern formed by the far-infrared emitting ceramic layer forming portion 1a; In addition to the above illustrations, emblems, appropriate designs, etc. may be included.

There are no particular restrictions on the method for forming the far-infrared emitting ceramic layer forming part on the base as a pattern, but for example, the raw material may be dispersed in a solvent (water, etc.), and this dispersion may be adhered onto the base. , and then drying the dispersion.

Furthermore, by drawing a pattern on the surface of the base with adhesive and scattering finely powdered far-infrared emitting ceramic on the adhesive drawn in this pattern, the far-infrared emitting ceramic layer forming part is formed in a pattern. A method of forming the far-infrared emitting ceramic layer forming part as a pattern on the base using a printing method, and a method of forming the far-infrared emitting ceramic layer forming part as a pattern on the base by applying a solvent solution containing the far-infrared emitting ceramic to a masked bedding sheet. The far-infrared emitting ceramic layer-forming portion can also be formed in a pattern by a method of forming the layer-forming portion on the base as a pattern.

The amount of the far-infrared emissive ceramic used in the far-infrared emissive ceramic layer forming section is generally 0.5 to 55 g/m2, preferably 5 to 30 g/m2, based on the base area. It is m2.

The amount of the far-infrared emissive ceramic used in the far-infrared emissive ceramic layer is based on the base area,
If it is less than 0.5 g/m2, heat emitted from the human body may not be sufficiently absorbed. On the other hand, 55g/
If the amount exceeds m2, the effect commensurate with the amount may not be exhibited.

The thickness of the far-infrared emitting ceramic layer forming portion is also determined by the amount of far-infrared emitting ceramic used.

Next, claim 3 will be explained.

The bedding sheet according to claim 3 has a moisture permeability of 5 on the base.
By forming a far-infrared emitting ceramic layer having a radiation density of 0 g/m2·hr, the far-infrared emitting ceramic layer is formed so that liquid can pass through the base.

In addition, the said moisture permeability is calculated|required by JIS L1099 A-1 method.

The far-infrared emitting ceramic layer has a moisture permeability of 50 g/m
The far-infrared emitting ceramic layer may be uniformly formed on the entire surface or a part of the surface of the base, as long as the far-infrared emitting ceramic layer has a temperature of 2.0 hours or more.

A far-infrared emitting ceramic layer having a moisture permeability of 50 g/m 2 ·hr or more can be formed on the base by using a coarse raw material of one particle or by forming the far-infrared emitting ceramic layer thinly.

The average particle diameter of the coarse-grained raw material is usually 0.
05 to 100 JLm, preferably 0.1 to 3 JLm.

Even if a far-infrared emissive ceramic layer with a moisture permeability of 50 g/m2/hour or more is formed, the amount of far-infrared emissive ceramic to be adhered to the bedding sheets is as follows in the case of the above-mentioned far-infrared emissive ceramic layer forming part. Almost the same.

Regarding any of the bedding sheets according to claims 1 to 3,
The base is preferably a fiber with good air permeability, such as cotton, linen, or nylon.

As shown in FIG. 2, for example, bedding sheets formed by forming such a far-infrared emissive ceramic layer on a base include a base jl! A two-layer structure in which a far-infrared emissive ceramic layer 1 is formed on +2, as shown in Fig. 3.
Far-infrared radioactive ceramic on base 2! 7jl is formed, and base 2 is provided on far-infrared emitting ceramic layer l, resulting in a three-layer structure.

In addition, in the case of a three-layer structure as shown in FIG. 3, it is possible to prevent the far-infrared emitting ceramic provided on the base from peeling off.

The bedding sheet of the present invention can be used alone, or can be used in conjunction with or in combination with other members.

Other members include, for example, a mat, a sheet consisting only of a base, and the like.

When using the bedding sheet of the present invention in combination with other members, it is preferable to make it detachable using a suitable detachable member such as a hook.

[Examples] Hereinafter, the structure and effects of the present invention will be further explained by specifically showing examples and comparative examples.

(Example 1) Far-infrared emissive ceramic of alumina-silica type [composition: A: 20375%, 5i0225%] was coated in a polka dot pattern on a cotton base with a thickness of 0.3 mm to form a far-infrared emissive ceramic layer. [Thickness 0.2 mmB polka dot pattern; area ratio of ceramic layer non-formed part to base area 50%
;Amount of far-infrared emissive ceramic relative to base area: 30
g/m2]. Furthermore, a cotton base similar to the above-mentioned cotton base was provided on the far-infrared emitting ceramic layer to form a bedding sheet in which the upper and lower layers were made of cotton.

The subjects slept on this bedding sheet, and the body surface temperature with respect to the sleeping time was determined. The results are shown in Figure 4.

From the graph in Figure 4, it was confirmed that the patient's body warmed up, ensured a comfortable and restful sleep, and was able to sleep soundly for a long period of time without sweating too much.

The amount of far-infrared emissive ceramic relative to the base area was varied from 0.5 to 80 g/m2, and the temperature rise on the body surface was determined by (2) thermography.

The results are shown in Figure 5, ■ The air permeability per unit area is calculated, and the results are shown in Figure 6, ■ JISL1099
The moisture permeability was determined by method A-1, and the results are shown in FIG.

(Comparative Example 1) Alumina-silica [
Composition; A9.20375%, 5i0225%]
A far-infrared emitting ceramic layer (thickness: 0.1 mm;
Area ratio θ% of the ceramic layer-free part to the base area
:Amount of far-infrared emissive ceramic relative to base area 30
g/m2]. Furthermore, a cotton base similar to the above-mentioned cotton base was provided on the far-infrared emitting ceramic layer to form a bedding sheet in which the upper and lower layers were made of cotton.

The subjects slept on this bedding sheet, and the body surface temperature with respect to the sleeping time was determined. The results are shown in Figure 4.

From the graph in Figure 4, it was confirmed that the body surface temperature decreased due to sweating.

When I slept on this bedding sheet, after two hours I sweated a lot, which remained on the bedding sheet, resulting in only a light sleep accompanied by discomfort.

The amount of the far-infrared emitting ceramic used in the sheet was varied from 0.5 to 80 g/m2, and the air permeability per unit area was determined, and the results are shown in Figure 8.
The moisture permeability was determined by the IS L1099 A-1 method, and the results are shown in FIG.

(Comparative Example 2) Cotton sheets without a far-infrared emitting ceramic coating layer were used.

The patient slept with this bedding sheet laid down, and the body surface temperature was calculated for the sleeping time. The results are shown in FIG. 4. From the graph in FIG. 4, it can be confirmed that the body surface temperature decreased and the body became cold.

In addition, one of the animals got cold when sleeping with this bedding sheet and was only able to get a light sleep.

[Effects of the Invention] According to the present invention, (1) Due to the voids in the far-infrared emitting ceramic layer formed in the bedding sheets, when the sheets are laid down to sleep, good air permeability and moisture permeability of the base are not impaired. Even if you sweat, the sweat won't stay on the bedding sheets.

(2) Far-infrared emitting ceramic absorbs heat emitted from the human body and emits it as far-infrared rays, warming the body and improving blood circulation. (3) Sleeping comfortably without discomfort. It is possible to provide bedding sheets having the following advantages.

[Brief explanation of drawings]

FIG. 1 [11, [2], [3], [4], and [5] are explanatory diagrams showing the patterns formed by the ceramic layer forming part in the bedding sheet of the present invention, FIG. 2, and FIG. 3 is a perspective cross-sectional explanatory diagram showing an example of the bedding sheet of the present invention; FIG. 4 is a graph showing the results of body surface temperature with respect to sleeping time in Example 1, Comparative Example 1, and Comparative Example 2; The figure is a graph showing the results of the temperature increase on the body surface in Example 1, Figure 6 is a graph showing the results of air permeability per unit area in Example 1, and Figure 7 is the moisture permeability result in Example 1. 8 is a graph showing the results of air permeability per unit area in Comparative Example 1. FIG. 9 is a graph showing the results of moisture permeability in Comparative Example 1. DESCRIPTION OF SYMBOLS 1... Far-infrared emissive ceramic layer, 1a... Far-infrared emissive ceramic layer forming part, 1b... Far-infrared emitting ceramic layer non-forming part, 2... Base. Figure 2 Figure 3 Cloud @ hanging calyx 1

Claims (3)

[Claims] (1) A bedding sheet characterized in that a far-infrared emitting ceramic layer is formed on a base so that liquid can pass therethrough. (2) The base has a far-infrared emissive ceramic layer formed part and a far-infrared emissive ceramic layer-free part formed in a pattern, and the area ratio of the far-infrared emissive ceramic layer-free part to the base area is 3 to 99%. A bedding sheet characterized by: (3) A bedding sheet characterized by forming a far-infrared emitting ceramic layer having a moisture permeability of 50 g/m^2·hr or more on the base.