JPH1110763A - Functional sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To drastically improve the energy radiation ratio per unit area of an ink coating layer by a method wherein on the surface of a sheet-form base material, a mixture of the powder of a functional inorganic substance, a foaming agent and an ink, is coated, and an unevenness is provided on the surface of the coated layer of the mixture by a foaming of the foaming agent. SOLUTION: A pattern 2 which is formed on the surface of a sheet material 1, is a printed pattern comprising a large number of small circles, which is formed using a mixture of the powder of a functional inorganic substance, a foaming agent and an ink, or a mixture of the powder of the functional inorganic substance, the foaming agent, and a paint or an adhesive. The powder of the functional inorganic substance is selected from carbon, far-infrared ray radiation ceramic, magnetic iron ore, piezo-electric ceramic, pyroelectric ceramic, anti-bacterial ceramic, anti-bacterial metal, deodorant ceramic, and deodorant metal. As the foaming agent, an agent which does not foam during a coating work of the mixture, foams in a drying process of the mixture after the coating, and forms an uneveness 4 on the surface of a coated layer 3 is suitable and convenient.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a functional sheet mainly used for a medical auxiliary material, a bedding material, etc., and has more functions such as a heat retaining property, a blood flow promoting property, a deodorizing property and an antibacterial property. The present invention relates to a functional sheet that can be used effectively.

[0002]

2. Description of the Related Art Applicants have previously developed a functional sheet used as a medical auxiliary material or bedding material, in which a woven or nonwoven fabric has a printed pattern formed with an ink containing a powder of a functional inorganic substance on the surface thereof. A sheet has been developed and published (Japanese Patent Application No. 8-148969).

When the functional sheet is used as a sheet or the like, far-infrared energy radiated from ceramic powder in the ink constituting the print pattern is absorbed by the outer surface layer of the human skin, and as a result, blood is lost. The promotion of the flow and the activation of the activity of the neurotransmission system are achieved. In addition, when the functional sheet is used as a medical aid such as a hot compress, far-infrared energy radiated from the ceramic powder in the ink is directly and efficiently absorbed by the affected part, thereby providing an excellent hot compress. The effect is given to the affected area.

[0004] As described above, conventional functional sheets have excellent practical utility. However, the functional sheet still has many problems to be solved. Among them, a particularly important problem is that the energy emissivity of far infrared rays or the like from the ink-coated surface is low. That is, the energy radiated from the powder of the functional substance contained in the ink is proportional to the outer surface area of the ink coating layer when the density of the powder in the ink and the thickness of the ink coating layer are the same. However, in the conventional functional sheet, since the surface of the printed portion on which the ink is applied is a substantially smooth flat surface, the apparent area of the ink applied surface becomes the radiation area of energy such as far infrared rays as it is, Unless the area of the ink-applied surface is increased, there is a disadvantage that the amount of radiant energy cannot be increased significantly.

[0005]

SUMMARY OF THE INVENTION The present invention has the above-mentioned problem in the conventional functional sheet, namely, the outer surface of the ink coating layer containing the functional powder has a smooth surface. The object of the present invention is to solve the problem that the energy radiation area of the ink coating layer does not increase more than the apparent area of the ink coating layer, and the energy radiation amount per unit area of the ink coating layer is relatively low. It is an object of the present invention to provide a functional sheet capable of significantly increasing the energy emissivity per unit area of the ink coating layer by providing irregularities on the surface of the ink coating layer.

[0006]

According to the first aspect of the present invention, a mixture of a powder of a functional inorganic substance, a foaming agent, and an ink is applied to the surface of a sheet-like substrate, and the mixture is foamed with a foaming agent. The basic structure of the present invention is to provide irregularities on the surface of the coating layer.

According to a second aspect of the present invention, a mixture of a powder of a functional inorganic substance, a foaming agent, and a paint or an adhesive is applied to the surface of a sheet-like substrate, and the mixture is applied by foaming the foaming agent. The provision of irregularities on the surface of the surface is a basic configuration of the present invention.

According to a third aspect of the present invention, in the first or the second aspect of the present invention, the functional inorganic material powder is made of carbon, far-infrared radiation ceramics, magnetite ore, piezoelectric ceramics, pyroelectric ceramics, Antibacterial ceramics, antibacterial metals, deodorizable ceramics, and deodorizable metals are powders of any one or two mixed powders.

[0009] The invention of claim 4 is the invention of claim 1 or claim 2.
In the invention, the sheet-like base material is any one of a woven fabric, a nonwoven fabric, and a synthetic resin film.

[0010] In the present invention, since the foaming agent is mixed in the mixture applied to the outer surface of the sheet-like substrate, the foaming agent is dried during the drying of the coating layer of the applied mixture. Irregularities are formed on the outer surface of the coating layer by foaming. As a result, the outer surface area of the coating layer is larger than the apparent surface area of the coating layer, and the amount of energy emitted from the functional powder increases in proportion to the increase in the outer surface area.

In the case where the functional powder is a ceramic powder which emits far-infrared rays, the outer surface of the human skin comes into close or direct contact with the coating layer of the mixture, so that the ceramic in the coating layer may be used. The powder absorbs thermal energy due to body temperature. As a result, the ceramic powder is activated by the absorption of heat energy, and re-radiates far infrared rays. Far-infrared rays radiated from ceramic powder are absorbed into the outer surface of the human skin with high efficiency, and the same effects as when massage is received by the activation of capillaries and nerve transmission systems by energy absorption. Will be triggered. Further, according to the function of each functional powder contained in the mixture,
Actions such as heat retention (heating), deodorization, and antibacterial effects are exhibited.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a functional sheet A according to the present invention, and FIG. 2 is a partial longitudinal sectional view of an AA part in FIG. In the figure, 1 is a sheet material, 2 is a pattern printed on the outer surface of the sheet material, 3 is a coating layer,
Reference numeral 4 denotes unevenness. In this embodiment, the functional sheet A
Is cut into a rectangular shape and is formed into a so-called mattress or bed sheet, but the functional sheet A may be wound and stored in a narrow long object.

The sheet material 1, which is the main component of the functional sheet A, is a woven fabric made of natural or synthetic fibers, and is formed to have appropriate thickness and width depending on the use. still,
In this embodiment, since the functional sheet A is used as a sheet, the sheet material 1 has a rectangular shape.
The sheet material 1 is a continuous long woven fabric, and is wound in a roll shape. Further, in the present embodiment, the sheet material 1 is a woven fabric, but it is a matter of course that the sheet material 1 may be a nonwoven fabric made of natural or synthetic fibers, or a film made of a synthetic resin.

The pattern 2 formed on the surface of the sheet material 1
Is a printed pattern composed of a number of small circles formed using a mixture of a powder of a functional inorganic substance and a foaming agent and an ink, or a mixture of a powder of a functional inorganic substance and a foaming agent and a paint or an adhesive. Then the inside diameter of the small circle is 3 ~ 15mmφ
Has been selected.

In this embodiment, the pattern 2 is a pattern composed of a large number of small circles. However, the pattern 2 may be a pattern composed of a large number of polygons such as a quadrangle or a hexagon, or a large number of polygons having no specific shape. The pattern may be of an irregular shape. Further, the mixture may be thinly applied to the entire surface of one or both sides of the sheet material 1 without forming the pattern 2.

When a pattern is formed from the above mixture, the size of each pattern 2 is 3 to 15 mmφ when the pattern is circular, and the distance between the diagonals when the pattern is polygonal. It is desirable to set it to 3 to 15 mm. By making the size of the pattern 2 as described above, the end (so-called pot) of the neurotransmitter system existing in the outer surface layer of the human skin as described later is far from the ceramic powder in the pattern 2. The absorption of infrared energy will just stimulate you.

The ink, paint, or adhesive serving as the main component of the mixture may be of any type as long as it can form the coating layer 3 of the mixture on the surface of the sheet material 1. In this embodiment, a usual so-called printing oil-based ink is used.

The functional inorganic powder forming the mixture includes carbon, far-infrared radiation ceramics, magnetite ore, piezoelectric ceramics, pyroelectric ceramics, antibacterial ceramics, antibacterial metals, deodorizing ceramics, and deodorizing metals. Any one of these powders or a mixed powder of two or more powders is used.

In this embodiment, a ceramic powder which emits far-infrared rays is mixed as a powder of the functional inorganic substance, and in this embodiment, the peak value falls within a range of 2 to 15 μm. Biomate that radiates energy (ceramic far-infrared radiator manufactured by Nissin Kogyo Co., Ltd.)
Powder is used.

The ceramic powder may be an antibacterial ceramic powder containing a substance that emits γ-rays, β-rays, α-rays or the like, such as thorium oxide and radium oxide, in addition to the ceramic powder that emits far-infrared rays. It may be a deodorizing ceramic powder containing a radioactive substance such as cobalt oxide, a piezoelectric ceramic powder containing trimarin or the like, or an antibacterial ceramic powder containing titanium oxide or magnesium oxide. It is convenient that the particle size of the ceramic powder to be mixed is finer, but it is sufficient if the particle size is so-called flour, and the mixing ratio of the ceramic powder to the main agent such as ink is usually selected to be about 5 to 30 wt%. Have been.
Further, as the antibacterial metal, titanium oxide, zinc oxide, silver oxide, copper oxide, magnesium oxide and the like are used, and as the deodorizing metal, cobalt oxide and thorium oxide are used.

As the foaming agent for forming the mixture, any foaming agent may be used as long as the surface of the coating layer 3 of the dried mixture is formed with irregularities 4 to increase the surface area. During the coating operation, the mixture (coating layer) after coating is foamed in the drying process without foaming.
It is convenient to form irregularities on the surface.

In the present embodiment, a small amount of a low boiling point hydrocarbon such as benzol is mixed into the ink as the main agent, and
This is heated and vaporized in the drying step to form irregularities 4 due to foaming on the surface of the coating layer 3.

When far-infrared radiating ceramic powder is used as the functional inorganic powder, the effect of keeping heat and promoting blood flow is exhibited. When carbon is used, deodorizing and heat retaining effects can be obtained. Furthermore, when magnetite ore powder is used, the effect of promoting blood flow by magnetism can be obtained. Similarly, when a piezoelectric ceramic powder or a pyroelectric ceramic powder is used, both effects of heat retention and promotion of blood flow can be obtained. When the antibacterial ceramic powder is used, the growth of bacteria and the like is suppressed.

[0024]

According to the present invention, a foaming agent is mixed into a mixture to be coated on a sheet-like substrate, and irregularities are formed on the surface of a coating layer of the mixture by foaming of the foaming agent. Therefore, the surface area of the coating layer is significantly increased as compared with the case where the surface of the conventional coating surface is a smooth surface. as a result,
The amount of radiant energy radiated from the functional inorganic powder in the coating layer and absorbed into the outer skin layer of the human body will be greatly increased, and the effects of warming, blood circulation promotion, sterilization, deodorization, etc. will further cooperate Will be demonstrated. Further, by changing the powder of the functional inorganic substance to be mixed, a functional sheet having any functions such as heat retention, deodorization, antibacterial and the like can be easily and inexpensively manufactured. The present invention has excellent practical utility as described above.

[Brief description of the drawings]

FIG. 1 is a plan view showing a functional sheet according to an embodiment of the present invention.

FIG. 2 is a partially enlarged longitudinal sectional view taken along the line AA of FIG.

[Brief description of reference numerals]

A is a functional sheet, 1 is a sheet-like substrate, 2 is a pattern, 3 is a coating layer, and 4 is uneven.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI B05D 7/24 301 B05D 7/24 301L 303 303B B32B 5/18 B32B 5/18

Claims (4)

[Claims] 1. A method in which a mixture of a powder of a functional inorganic substance, a foaming agent, and an ink is applied to the surface of a sheet-like substrate, and irregularities are formed on the surface of a coating layer of the mixture by foaming the foaming agent. Functional sheet featuring. 2. A mixture of a powder of a functional inorganic substance, a foaming agent, and a paint or an adhesive is applied to the surface of a sheet-like substrate, and irregularities are formed on an application surface of the mixture by foaming of the foaming agent. A functional sheet, characterized in that: 3. The method of claim 1, wherein the powder of the functional inorganic substance is made of carbon, far-infrared radiation ceramics, magnetite ore, piezoelectric ceramics, pyroelectric ceramics, antibacterial ceramics, antibacterial metal,
3. The powder according to claim 1, wherein the powder is one of deodorizing ceramics and deodorizing metal, or a mixed powder of two or more of them.
Functional sheet according to 1. 4. The functional sheet according to claim 1, wherein the sheet-shaped substrate is any one of a woven fabric, a nonwoven fabric, and a synthetic resin film.