JP3115026U - Sweat, body temperature detection sticker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a practical sweating and body temperature detection seal capable of simultaneously grasping a sweating state and a body temperature and easily discriminating the health state and psychological state of a sticker.
SOLUTION: A reversible thermochromic layer 3 containing a reversible thermochromic composition is provided on the back surface of a transparent sheet 2, and a porous layer 4 containing a low refractive index pigment is provided on the outer periphery of the reversible thermochromic layer. Sweating by providing an adhesive layer 5 containing an adhesive on the outer periphery of the porous layer, body temperature detection seal 1, or a porous layer containing a low refractive index pigment on the back surface of a transparent sheet, A sweating and body temperature detection seal in which a reversible thermochromic layer containing a reversible thermochromic composition is provided on the outer periphery, and an adhesive layer containing an adhesive is provided on the outer periphery of the reversible thermochromic layer.
[Selection] Figure 1

Description

  The present invention relates to a sweating and body temperature detection seal. More specifically, the present invention relates to a sweating and body temperature detection seal for identifying the degree of sweating and body temperature change.

Conventionally, a seal using a hologram is disclosed as a seal to be attached to the body surface (see, for example, Patent Document 1).
Japanese Unexamined Patent Publication No. 2000-6588

  The inventor intends to provide a seal that is applied to the body surface and that is more practical.

  The present invention provides a reversible thermochromic layer containing a reversible thermochromic composition on the back surface of a transparent sheet, a porous layer containing a low refractive index pigment is provided on the outer periphery of the reversible thermochromic layer, and the porous layer A perspiration layer, a body temperature detection seal, or a porous layer containing a low refractive index pigment is provided on the back surface of the transparent sheet, and a reversible heat is provided on the outer periphery of the porous layer. A sweating and body temperature detection seal in which a reversible thermochromic layer containing a color-changing composition is provided and an adhesive layer containing an adhesive is provided on the outer periphery of the reversible thermochromic layer is a requirement.

  The present invention can provide a practical sweating and body temperature detection sticker that can grasp the sweating state and body temperature at the same time by sticking on the body surface, and can easily determine the health and psychological state of the sticker. .

  Any material can be used for the transparent sheet as long as it has transparency. However, a synthetic resin film such as polyester, polyethylene, polypropylene, polyethylene terephthalate, polyvinyl chloride, and polyvinylidene chloride is preferable.

The reversible thermochromic material used for forming the reversible thermochromic layer is, for example, an electron donating color-forming organic compound, an electron-accepting compound, or an organic compound medium that reversibly causes a color reaction of the two. A reversible thermochromic composition containing components, liquid crystal, Ag ₂ HgI ₄ , Cu ₂ HgI ₄ or the like is used.
The above-described reversible thermochromic composition containing the three components of the organic compound medium that reversibly causes a color reaction with the electron-donating color-forming organic compound and the electron-accepting compound may be used as it is. It is preferable to encapsulate and use as a reversible thermochromic microcapsule pigment. This is because the reversible thermochromic composition can be kept in the same composition under the various use conditions and can exhibit the same effects.
By encapsulating in the microcapsule, a chemically and physically stable pigment can be formed, and a particle diameter of 0.1 to 100 μm, preferably 1 to 50 μm, more preferably 2 to 30 μm satisfies the practicality.
Microencapsulation includes conventionally known interfacial polymerization methods, in situ polymerization methods, in-liquid curing coating methods, phase separation methods from aqueous solutions, phase separation methods from organic solvents, melt dispersion cooling methods, air suspensions. There are a coating method, a spray drying method, and the like, which are appropriately selected according to the application. Furthermore, the surface of the microcapsule can be provided with a secondary resin film according to the purpose to impart durability, or the surface characteristics can be modified for practical use.

  The reversible thermochromic composition and the microcapsule pigment encapsulating the reversible thermochromic composition can be dispersed in a vehicle and coated on a transparent sheet, and then dried to form a reversible thermochromic layer.

The porous layer is a layer containing a low refractive index pigment, has a light shielding property in a dry state, becomes transparent or translucent when absorbing sweat, and has a light transmitting property. Is a layer that returns to its original state when dried.
Examples of the low refractive index pigment include silicic acid and salts thereof, barite powder, barium sulfate, barium carbonate, calcium carbonate, gypsum, clay, talc, alumina white, magnesium carbonate, and the like. It is in the range of 1.8, and shows good transparency when water is absorbed.
Examples of the silicic acid salt include aluminum silicate, aluminum potassium silicate, sodium aluminum silicate, aluminum calcium silicate, potassium silicate, calcium silicate, calcium sodium silicate, sodium silicate, magnesium silicate, and magnesium potassium silicate.
The particle size of the low refractive index pigment is not particularly limited, but 0.03 to 10.0 μm is preferably used.
Two or more of the low refractive index pigments can be used in combination.
In addition, a particulate silica is mentioned as a low refractive index pigment used suitably.

The low refractive index pigment is dispersed in a vehicle containing a binder resin, applied onto a transparent sheet, and then dried to form a porous layer.
Examples of the binder resin include urethane resin, nylon resin, vinyl acetate resin, acrylic ester resin, acrylic ester copolymer resin, acrylic polyol resin, vinyl chloride-vinyl acetate copolymer resin, maleic resin, polyester resin, styrene. Resin, styrene copolymer resin, polyethylene resin, polycarbonate resin, epoxy resin, styrene-butadiene copolymer resin, acrylonitrile-butadiene copolymer resin, methyl methacrylate-butadiene copolymer resin, butadiene resin, chloroprene resin, melamine resin, and the above Each resin emulsion, casein, starch, cellulose derivative, polyvinyl alcohol, urea resin, phenol resin, epoxy resin and the like can be mentioned.
Since the porous layer has a small mixing ratio of the binder resin to the colorant as compared with a conventionally known general coating film, it is difficult to obtain sufficient film strength. Therefore, it is preferable to use a urethane resin or a nylon resin as the binder resin, or to contain at least the resin.
Examples of the urethane resin include a polyester urethane resin, a polycarbonate urethane resin, and a polyether urethane resin, and two or more kinds can be used in combination. In addition, a urethane emulsion resin in which the resin is emulsified and dispersed in water, or a colloid in which the resin is self-emulsified without requiring an emulsifier due to the ionic group of the urethane resin (urethane ionomer) itself and dissolved or dispersed in water. A dispersion type (ionomer type) urethane resin can also be used.
The urethane resin can be used alone, but other binder resins can be used in combination depending on the type of support and the performance required for the coating. When a binder resin other than the urethane resin is used in combination, in order to obtain a practical film strength, it is preferable to contain 30% or more of the urethane resin in a solid content weight ratio in the binder resin of the porous layer.
In the binder resin, the crosslinkable resin can be further improved in film strength by adding an arbitrary crosslinking agent and crosslinking.
The binder resin has a large or small affinity with water. By combining these, the permeation time into the porous layer, the degree of permeation, and the slow speed of drying after permeation can be adjusted. Furthermore, the above-mentioned penetration performance can be controlled by adding a dispersant as appropriate.
If the porous layer contains a colored dye or colored pigment, it becomes colored and opaque in the dry state, becomes colored transparent or colored and translucent when absorbing sweat, and returns to its original state when the absorbed portion dries. .
Furthermore, by separately providing a porous layer containing a colored dye or colored pigment in the lower layer of the porous layer, it becomes white opaque in a dry state, and when absorbing sweat, it becomes colored transparent or colored translucent, and the absorbed part is It can also be configured to return to the original state again when dried.

As the pressure-sensitive adhesive used for forming the pressure-sensitive adhesive layer, conventionally known tackifiers such as general-purpose acrylic resin, urethane resin, styrene-butadiene copolymer, vinyl ether copolymer, natural rubber and the like are appropriately used alone. Or it can be used in combination.
By using a water-insoluble adhesive as the adhesive, it is possible to prevent the adhesive from transferring to the body surface when the seal is peeled off.
The pressure-sensitive adhesive is dispersed in various solvents and coated on a transparent sheet, and then dried to form a pressure-sensitive adhesive layer.

  The pressure-sensitive adhesive layer, reversible thermochromic layer, and porous layer are conventionally known methods such as screen printing, offset printing, gravure printing, coater, tampo printing, transfer printing means, brush coating, spray coating, electrostatic coating. It can be formed by means such as electrodeposition coating, flow coating, roller coating, and dip coating.

In the present invention, a reversible thermochromic layer is provided on the back surface of the transparent sheet, a porous layer is provided on the outer periphery of the reversible thermochromic layer, an adhesive layer is provided on the outer periphery of the porous layer, or transparent A porous layer is provided on the back surface of the porous sheet, a reversible thermochromic layer is provided on the outer periphery of the porous layer, and an adhesive layer is provided on the outer periphery of the reversible thermochromic layer to form a seal.
In the case where the reversible thermochromic layer is provided on the back surface of the transparent sheet, the porous layer is provided on the outer periphery of the reversible thermochromic layer, and the adhesive layer is provided on the outer periphery of the porous layer, the reversible thermochromic layer is It is preferably formed in the center of the back surface of the transparent sheet, a porous layer is provided on the back surface of the transparent sheet, a reversible thermochromic layer is provided on the outer periphery of the porous layer, and the outer periphery of the reversible thermochromic layer In the case of a configuration in which an adhesive layer is provided in the part, the porous layer is preferably formed in the center part on the back surface of the transparent sheet.
With the above-described configuration, the seal can be miniaturized and the degree of freedom of the sticking location is increased, so that sweating and body temperature at various locations can be measured.
Further, in the case of human beings, it can be applied not only to the body surface but also to the clothing surface, and in the case of animals, it can be applied to the body surface at a desired site.
In addition, it can prevent that a seal | sticker peels by abrasion etc. by forming the said adhesion layer in the outer peripheral part of a transparent sheet back surface.

The reversible thermochromic layer contains one type of reversible thermochromic composition, and may be configured to measure a predetermined temperature or more and a predetermined temperature or less, but a plurality of reversible thermochromic compositions having different discoloration temperatures. It is preferable that it is the structure which can identify body temperature change in more detail.
Moreover, in order to identify body temperature change in more detail, a plurality of reversible thermochromic layers may be provided, and the reversible thermochromic layer may include a plurality of reversible thermochromic compositions each having a different color change temperature.
In order to identify changes in body temperature, it is preferable to use a reversible thermochromic composition that changes color at 30 to 45 ° C.

In the laminated structure described above, the reversible thermochromic layer and the porous layer may be symbol layers such as letters, symbols, and figures if necessary.
Further, a non-discoloring layer may be interposed between the reversible thermochromic layer and the transparent sheet, or may be interposed between the porous layer and the transparent sheet, or may be provided on the surface of the transparent sheet. It may be a pattern layer such as a figure.

  If necessary, a release paper can be provided on the adhesive layer side of the sweating and body temperature detection seal obtained as described above.

Examples are shown below. In addition, the part in an Example shows a weight part.
Example 1 (see FIGS. 1 and 2)
10 parts of a microcapsule pigment (blue below 37 ° C., colorless at 37 ° C. or higher) encapsulating a reversible thermochromic composition on the back side of a polyethylene terephthalate resin film as the transparent sheet 2, acrylic ester emulsion (solid content 50 %) 20 parts, 0.2 part of a silicone-based antifoaming agent, 10 parts of water, 0.5 part of ethylene glycol, 0.5 part of a thickener, and 0.5 part of an isocyanate-based crosslinking agent are uniformly mixed and stirred Using a reversible thermochromic screen ink, a circular reversible thermochromic layer 3 was formed at the center of the sheet with a 109 mesh screen plate.
Next, fine powdered silica [trade name: Nipsil E-200, manufactured by Nippon Silica Kogyo Co., Ltd.] 15 parts, acrylic ester emulsion (solid content 50%) 30 parts, water 50 parts, silicone-based antifoaming agent 0.5 Part of a thickener for water-based ink, 1 part of ethylene glycol, 3 parts of ethylene glycol, and 3 parts of a blocked isocyanate-based cross-linking agent are mixed with stirring and mixed with white screen printing ink. A donut-shaped porous layer 4 was formed around the discoloration layer 3.
Further, a doughnut-type adhesive layer 5 was formed around the porous layer using an adhesive liquid containing a polybutadiene-based resin to obtain a sweating and body temperature detection seal 1.

In the sweat and body temperature detection seal, the reversible thermochromic layer exhibited blue and the porous layer exhibited white before being applied to the body surface.
When the seal was affixed to the body surface, there was no change immediately after that, but when the sweat and body temperature rose due to exercise, the reversible thermochromic layer and the porous layer became colorless.

Example 2 (see FIGS. 3 and 4)
10 parts of microcapsule pigment (blue below 32 ° C., colorless at 32 ° C. or higher) encapsulating a reversible thermochromic composition on the back side of the polyethylene terephthalate resin film as the transparent sheet 2, 0.1 part pink pigment, Acrylic ester emulsion (solid content 50%) 20 parts, silicone antifoam 0.2 parts, water 10 parts, ethylene glycol 0.5 parts, thickener 0.5 parts, isocyanate crosslinking agent 0.5 parts 10 parts of a microcapsule pigment (blue below 34 ° C., colorless at 34 ° C. or higher) containing a reversible thermochromic screen ink A and a reversible thermochromic composition. 1 part, 20 parts acrylic ester emulsion (solid content 50%), 0.2 parts silicone antifoam, 10 parts water, 0.5 parts ethylene glycol, 0.5 parts thickener, iso A reversible thermochromic screen ink B obtained by uniformly mixing and stirring 0.5 parts of an anate crosslinking agent, and a microcapsule pigment containing a reversible thermochromic composition (blue at less than 36 ° C., colorless at 36 ° C. or more) 10 parts, pink pigment 0.1 part, acrylic ester emulsion (solid content 50%) 20 parts, silicone antifoaming agent 0.2 part, water 10 parts, ethylene glycol 0.5 part, thickener 0. 5 parts, reversible thermochromic screen ink C obtained by uniformly mixing and stirring 0.5 part of an isocyanate crosslinking agent, and a microcapsule pigment containing a reversible thermochromic composition (blue below 38 ° C., 38 ° C. or higher) 10 parts, pink pigment 0.1 part, acrylic ester emulsion (solid content 50%) 20 parts, silicone antifoam 0.2 parts, water 10 parts, ethylene glycol 0.5 parts, thickening Agent Using a reversible thermochromic screen ink D obtained by uniformly mixing and stirring 5 parts and 0.5 part of an isocyanate-based crosslinking agent, each of the circles is divided into four equal parts at the center of the sheet with a 109 mesh screen plate. The reversible thermochromic layer 3 which is printed in the shape (fan shape) and changes color from blue to pink is formed.
Next, fine powdered silica [trade name: Nipsil E-200, manufactured by Nippon Silica Kogyo Co., Ltd.] 15 parts, acrylic ester emulsion (solid content 50%) 30 parts, water 50 parts, silicone-based antifoaming agent 0.5 Part of a thickener for water-based ink, 1 part of ethylene glycol, 3 parts of ethylene glycol, and 3 parts of a blocked isocyanate-based cross-linking agent are mixed with stirring and mixed with white screen printing ink. A donut-shaped porous layer 4 was formed around the discoloration layer 3.
Furthermore, fine powder silica [trade name: Nipseal E-200, manufactured by Nippon Silica Kogyo Co., Ltd.] 15 parts, pink pigment 0.5 parts, acrylic ester emulsion (solid content 50%) on the porous layer 4 30 screens, 50 parts of water, 0.5 parts of silicone antifoaming agent, 3 parts of thickener for water-based ink, 1 part of ethylene glycol, 3 parts of blocked isocyanate-based cross-linking agent, and pink screen printing The colored porous layer 41 having the same shape as that of the porous layer was formed by a 180 mesh screen plate using a printing ink.
Further, a doughnut-type adhesive layer 5 was formed around the porous layer by using an adhesive liquid containing an acrylic resin to obtain a sweating and body temperature detection seal 1.

In the sweating and body temperature detection seal, the reversible thermochromic layer composed of four temperature zones was blue and the porous layer was white before being applied to the body surface.
When the seal is pasted on the surface of the underwear worn, the reversible thermochromic layer containing a reversible thermochromic composition that changes color at 32 ° C, 34 ° C, and 36 ° C among the four reversible thermochromic layers is blue. Although the color changed to pink, the reversible thermochromic layer containing the reversible thermochromic composition that changed color at 38 ° C. remained blue, and the porous layer also exhibited white. Next, when sweating and body temperature rose while exercising with the underwear on, the reversible thermochromic layer that changed color at 38 ° C. also turned pink, and the porous layer also turned pink by absorbing sweat.

Example 3 (see FIGS. 5 and 6)
On the back of the film made of polyvinyl chloride resin as the transparent sheet 2, 15 parts of fine powdered silica [trade name: Nipseal E-200, manufactured by Nippon Silica Kogyo Co., Ltd.], 50 parts of urethane emulsion (solid content 30%), water 50 parts, 0.5 part of silicone-based antifoaming agent, 3 parts of thickener for water-based ink, 1 part of ethylene glycol and 3 parts of blocked isocyanate-based crosslinking agent are used for white screen printing ink obtained by uniformly mixing and stirring. The circular porous layer 4 was formed in the center portion of the sheet with a 180 mesh screen plate.
Furthermore, fine powder silica [trade name: Nipseal E-200, manufactured by Nippon Silica Kogyo Co., Ltd.] 15 parts, blue pigment 0.5 parts, acrylic ester emulsion (solid content 50%) 30 on the porous layer 4 Part of water, 50 parts of water, 0.5 part of silicone-based antifoaming agent, 3 parts of thickener for water-based ink, 1 part of ethylene glycol, and 3 parts of block isocyanate-based crosslinking agent are uniformly mixed and stirred. The colored porous layer 41 having the same shape as that of the porous layer was formed using a 180 mesh screen plate.
Next, 5 parts of microcapsule pigment encapsulating the reversible thermochromic composition (blue at less than 36 ° C., colorless at 36 ° C. or more), microcapsule pigment encapsulating the reversible thermochromic composition (pink at less than 38 ° C., Colorless at 38 ° C or higher) 5 parts, acrylic ester emulsion (solid content 50%) 20 parts, silicone antifoam 0.2 parts, water 10 parts, ethylene glycol 0.5 parts, thickener 0.5 parts Using a reversible thermochromic screen ink obtained by uniformly mixing and stirring 0.5 part of an isocyanate crosslinking agent, a donut-shaped reversible thermochromic layer 3 around the porous layer 4 using a 109 mesh screen plate Formed.
Furthermore, a doughnut-type adhesive layer 5 was formed around the reversible thermochromic layer using an adhesive liquid containing a styrene-butadiene resin to obtain a sweating and body temperature detection seal 1.

In the sweat and body temperature detection seal, the reversible thermochromic layer exhibited blue and the porous layer exhibited white before being applied to the body surface.
When the seal was applied to the body surface, the reversible thermochromic layer changed from blue to pink, but the porous layer remained white. Next, when sweating and body temperature rose while moving while the seal was applied to the body surface, the reversible thermochromic layer changed from pink to colorless, and the porous layer changed from white to blue due to sweat absorption.

It is a front view of one Example of this invention sweating and a body temperature detection seal | sticker. It is a longitudinal cross-sectional view of the sweating and body temperature detection seal | sticker of FIG. It is a front view of other examples of the present invention perspiration, body temperature detection seal. FIG. 4 is a longitudinal sectional view of the sweating and body temperature detection seal of FIG. 3. It is a front view of other examples of the present invention perspiration, body temperature detection seal. FIG. 6 is a longitudinal sectional view of the sweating and body temperature detection seal of FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sweating, body temperature detection sticker 2 Transparent sheet 3 Reversible thermochromic layer 4 Porous layer 41 Colored porous layer 5 Adhesive layer

Claims (10)

  A reversible thermochromic layer containing a reversible thermochromic composition is provided on the back surface of the transparent sheet, a porous layer containing a low refractive index pigment is provided on the outer periphery of the reversible thermochromic layer, and an outer periphery of the porous layer. A sweating and body temperature detection seal provided with an adhesive layer containing an adhesive.   The sweat and body temperature detection seal according to claim 1, wherein the reversible thermochromic layer is formed at the center of the back surface of the transparent sheet.   A porous layer containing a low refractive index pigment is provided on the back surface of the transparent sheet, a reversible thermochromic layer containing a reversible thermochromic composition is provided on the outer periphery of the porous layer, and an outer periphery of the reversible thermochromic layer is provided. A sweating and body temperature detection seal provided with an adhesive layer containing an adhesive.   The sweating and body temperature detection seal according to claim 3, wherein the porous layer is formed at the center of the back surface of the transparent sheet.   The sweat and body temperature detection seal according to any one of claims 1 to 4, wherein the adhesive layer is formed on an outer peripheral portion of the back surface of the transparent sheet.   The sweating and body temperature detection seal according to any one of claims 1 to 5, comprising a plurality of reversible thermochromic compositions having different color change temperatures in the reversible thermochromic layer.   The sweating and body temperature according to any one of claims 1 to 5, comprising a plurality of reversible thermochromic layers and a plurality of reversible thermochromic compositions each having a different color change temperature. Detection seal.   The sweat and body temperature detection seal according to any one of claims 1 to 7, wherein the reversible thermochromic composition changes color at 30 to 45 ° C.   The sweating and body temperature detection seal according to any one of claims 1 to 8, wherein the porous layer contains a colored dye and / or a colored pigment.   The sweating and body temperature detection seal according to claim 1, wherein the pressure-sensitive adhesive is a water-insoluble pressure-sensitive adhesive.

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