JP2013003040A - Moisture transpiration amount measuring patch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a moisture transpiration amount measuring patch with a simple structure capable of quantitatively measuring a moisture transpiration amount accurately by a simple operation of attaching it on a surface to be measured such as human skin.SOLUTION: A moisture transpiration amount measuring patch comprises: a transparent film 12 which is attached to the surface to be measured such as human skin by an adhesive 22; a coloring agent storage part 26 which faces the surface of the transparent film 12 in the side of the adhesive 22 and contains a coloring agent 28 absorbed in it; and a color changing part 24 which is connected to the coloring agent storage part 26 and is formed in a long shape in one direction, allowing the coloring agent 28 to permeate in the longitudinal direction. It is provided with: a moisture impermeable layer 30 which covers the surface of the color changing part 24 at the opposite side from the side of the transparent film 12; and a moisture permeable layer 34 which is arranged on the adhesive 22 side of the transparent film 12 and covers the coloring agent storage part 26. The transparent film 12 is provided with: a transparent display part 16 which makes the color changing part 24 visible; and a print part 14 which is arranged around the display part 16 and is provided with a scale 18 in the longitudinal direction of the color changing part 24.

Description

  The present invention relates to a moisture transpiration amount measurement patch for measuring a state of mind and body such as stress and a refreshing effect, and for measuring each part of the skin and other moisture evaporation.

For example, it is known that the type of moisture evaporation from the skin causes mental sweat to be secreted from the palms and soles of the palm by the action of sympathetic nerves due to mental stimulation such as stress. This mental sweating is in a very small amount in the range of several mg / cm ² / hr to several tens mg / cm ² / hr, unlike thermal sweating which is sweat due to exercise. This perspiration increases the amount of transdermal water evaporation (Trance Epidermal Water Loss, hereinafter referred to as TEWL value). From this phenomenon, stress or the like can be examined by measuring the TEWL value.

  TEWA meters, evaporation polymeters, etc. are commercially available as instruments that continuously measure the amount of moisture transpiration from the skin, but they are expensive, large and heavy, and the measurement sensor must be fixed to the measurement site such as the skin for a long time. Was necessary. Furthermore, it is difficult to perform measurement while performing a target operation, and a recorder is required in the case of continuous measurement over a long period of time. For this reason, the measurement of the amount of moisture transpiration from the skin is limited to a limited one at a research institution and is not general.

  Thus, conventionally, a test sheet for simply measuring the TEWL value and checking the degree of stress has been provided. The test sheet disclosed in Patent Documents 1 and 2 by the inventor of the present application includes a transparent film attached to the skin with an adhesive, and a cobalt chloride paper that is provided on the adhesive side of the transparent film and adsorbs cobalt chloride. Is provided. The transparent film is provided with a color sample for coloring in which cobalt chloride reacts by moisture absorption. The test sheet is applied to the skin of the subject, and the color changes as the cobalt chloride paper absorbs moisture that evaporates from the skin surface and the cobalt chloride crystal structure changes due to the adsorbed moisture. is there. The amount of water that evaporates is measured by comparing this color change with a color sample.

JP 2004-236794 A JP 2007-147449 A

  In the case of the above background art, the amount of water is qualitatively measured by the discoloration of cobalt chloride, and the amount of water evaporation cannot be measured quantitatively and accurately. Therefore, if the amount of water transpiration can be measured more accurately and quantitatively with a simple patch or the like, it is considered useful for improving QOL in various places of life.

  In addition, commercially available instruments for measuring stress and skin moisture transpiration are expensive, continuous measurement is impossible, and the measurement is limited to experimental measurement.

  The present invention has been made in view of the above-mentioned problems of the background art, and has a simple structure and accurately and quantitatively measures the amount of water transpiration with a simple operation that is applied to the surface of a measurement object such as skin. It is an object of the present invention to provide a patch for measuring moisture transpiration.

  The present invention includes a transparent film that is attached to a surface to be measured such as skin with an adhesive, a color former storage unit that is provided on the adhesive side of the transparent film and adsorbs the color former, and the color former storage unit. A color-changing portion that is formed long in one direction and that penetrates in the longitudinal direction, a moisture-impermeable layer that covers the surface of the color-changing portion opposite to the transparent film, and an adhesive for the transparent film A moisture permeable layer facing the surface of the colorant and covering the color former storage part is provided, and the transparent film has a transparent display part that makes the discolored part visible, and a peripheral part of the display part. It is a moisture transpiration amount measurement patch provided with a printing part on which a scale along the longitudinal direction of the discoloration part is drawn.

  In addition, a plurality of the color changing portions are provided, and each of the color changing portions is provided with the color former storage portion, and the plurality of the color changing portions are overlapped with each other so as to face the display portion. The discoloration part positioned relatively closer to the display part is formed shorter in the longitudinal direction than the discoloration part located farther from the display part, and there is no moisture between the discoloration parts. A transmissive layer is provided, and the color formers having different colors are adsorbed to the plurality of color former reservoirs.

  In the color former storage section, a hydrophilic polymer material is mixed as a dissolution accelerator for increasing the dissolution / penetration rate of the color former. In the color former storage section, a surfactant that accelerates the dissolution / penetration rate of the color former is mixed. The hydrophilic polymer material is, for example, polyethylene glycol. A plurality of the color changing section, the color former storage section, and the display section may be provided. Further, the color changing portion and the color former storage portion are formed of the same sheet material, and the color former storage portion is a dry solid material.

  The moisture transpiration amount measurement patch of the present invention can measure the amount of moisture transpiration easily, accurately and quantitatively by applying it to the surface of the measurement object such as the skin. It is possible to quantify mental stimuli such as stress, excitement, and pain from the skin or the like that is the measurement target surface by measuring, for example, the amount of insensitive transpiration water or the amount of sweating on the palm.

It is a cross-sectional schematic diagram of the moisture transpiration amount measurement patch of 1st embodiment of this invention. It is a front view of the moisture transpiration amount measurement patch of the first embodiment of the present invention. It is a rear view of the moisture transpiration amount measurement patch of the first embodiment of the present invention. It is a front view which shows the modification of the moisture transpiration amount measurement patch of 1st embodiment of this invention. It is a graph which shows the correlation of the patch scale and TEWL measurement value of the moisture transpiration amount measurement patch of 1st embodiment of this invention. It is an expansion cross-sectional schematic diagram of the moisture transpiration amount measurement patch of 2nd embodiment of this invention. It is a rear view of the moisture transpiration amount measurement patch of a second embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 show a first embodiment of the present invention, and a moisture transpiration measuring patch 10 of this embodiment is provided with a transparent film 12 serving as a support. The material of the transparent film 12 is made of a resin film having flexibility, excellent transparency, and excellent toughness. For example, polypropylene, polyolefin, polyester, polyvinyl chloride, polyvinylidene chloride, polyethylene, nylon, urethane and the like are used. The thickness is 20 to 100 microns, preferably 50 to 75 microns. The transparent film 12 is cut into a shape with rounded rectangular corners, or an oval or a circle.

  On the surface 12a of the transparent film 12, a printing unit 14 on which predetermined characters and patterns are drawn is provided. FIG. 2 shows the printing unit 14 as seen from the surface 12a of the transparent film 12 of the moisture transpiration measurement patch 10. A transparent display unit 16 is provided at the center of the surface 12a of the transparent film 12. Yes. Inside the display portion 16, a color changing portion 24 described later provided on the back surface 12 b of the transparent film 12 through the transparent film 12 is visually recognized. The shape of the display unit 16 is a long rectangle along the longitudinal direction of the transparent film 12. On one side edge along the longitudinal direction of the display unit 16, a scale 18 indicating the amount of moisture transpiration is printed, and on the other side edge, the state of the amount of moisture transpiration corresponding to the scale 18 has five levels. The characters 20 are printed as “very good”, “slightly good”, “normal”, “slightly dry”, and “dry”.

  An adhesive 22 is uniformly attached to the back surface 12 b of the transparent film 12. The adhesive 22 is, for example, an acrylic adhesive. A color changing portion 24 is provided on the back surface 12 b of the transparent film 12 at a position facing the display portion 16. The discoloration portion 24 is obtained by cutting a sheet material of filter paper, Japanese paper, rayon or other cellulose-based hydrophilic material into a predetermined shape, and has a light color such as white. The color changing portion 24 is provided in a rectangular shape that is longer than the longitudinal direction of the display portion 16 and wider in the width direction. The discoloration portion 24 is provided so as to protrude to a predetermined length from the end portion of the display portion 16 printed with “very good”, and the protruding portion becomes the color former storage portion 26.

  The color former 28 is adsorbed and dried in the color former reservoir 26. The color former 28 is water-soluble, and is selected from colors suitable for visual determination by mixing one or more selected from pigments and dyes. The colors are red, blue, yellow, green and the like. For example, red color formers include amaranth, erythrosin, allura red, and new coxin. Examples of the blue color former include indigo carmine and brilliant blue. Examples of the yellow color former include tartrazine and sunset yellow. Moreover, arbitrary colors can be adjusted by mixing these. For example, green can be formed by mixing blue and yellow, and orange can be formed by mixing red and yellow.

  A dissolution accelerator 29 is mixed with the color former 28. Due to the dissolution accelerator 29, the dissolution rate of the color former 28 in the adsorbed moisture and the penetration rate into the discolored portion are remarkably increased. The dissolution accelerator 29 is water-soluble, and one or more kinds selected from a deliquescent substance, a hydrophilic polymer material, or a surfactant are used. For example, sorbitol, polyethylene glycol, glycerin, ammonium chloride, calcium chloride and the like. In particular, polyethylene glycol is effective because it has low toxicity and is difficult to chemically change. The average molecular weight of polyethylene glycol is preferably 1000 to 20000, and particularly preferably 1000 to 4000.

  As the dissolution accelerator 29, a hydrophilic polymer material or a surfactant is effective because it accelerates the dissolution of the color former 28 and accelerates the penetration into the discolored portion 24. As the hydrophilic polymer material, polyethylene glycol or polyvinyl alcohol, and as the surfactant, a nonionic surfactant is preferable, sucrose fatty acid ester sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, fatty acid sorbitan ester, fatty acid alkanolamide, Examples include fatty acid diethanolamide, polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, alkyl polyglycoside, and alkyl monoglyceryl ether.

  A moisture-impermeable layer 30 is provided on the surface of the color changing portion 24 opposite to the transparent film 12 so as to cover the color changing portion 24. The moisture impermeable layer 30 is slightly larger than the discolored portion 24. The color former storage portion 26 connected to the color changing portion 24 protrudes outward from the end portion of the moisture-impermeable layer 30 and is exposed. The moisture impermeable layer 30 is a film such as polypropylene, for example. An adhesive 32 is uniformly applied to the surface of the moisture impermeable layer 30 opposite to the discolored portion 24. The adhesive 32 is, for example, an acrylic adhesive.

  On the back surface 12 b of the transparent film 12, a moisture permeable layer 34 that covers the color former storage unit 26 is provided. The moisture permeable layer 34 is smaller than the transparent film 12 and has a size that covers at least the entire color former storage unit 26. The moisture permeable layer 34 is adhered to the adhesive 32 where the moisture permeable layer 34 contacts the moisture impermeable layer 30 and the adhesive 22 where it contacts the transparent film 12. The moisture permeable layer 34 is a hydrophobic nonwoven fabric or woven fabric such as polyester or polypropylene.

  A release sheet 36 is bonded to the back surface 12 b of the transparent film 12 so as to cover the moisture permeable layer 34. The moisture transpiration amount measurement patch 10 to which the release sheet 36 is attached is packaged and sealed in a bag such as a resin film (not shown). As a result, alteration due to humidity in the air can be prevented.

Next, a method of using the moisture transpiration amount measurement patch 10 of this embodiment will be described. First, the release sheet 36 is peeled from the moisture transpiration amount measurement patch 10 to expose the adhesive 22. Then, the moisture transpiration measurement patch 10 is attached to the skin of the subject, for example, the palm. At this time, before applying the moisture transpiration amount measurement patch 10, wet moisture is wiped off in advance by sweating of the palm or hand washing. After sticking, leave it in that state for a predetermined time. The sticking time is several minutes to 24 hours, and may be, for example, 3 minutes. At this time, the moisture permeation layer 34 captures the palm sweat that is generated, the color developer storage unit 26 adsorbs the moisture, the color developer 28 melts, and the colored moisture penetrates into the color changing portion 24 and moves through the color changing portion 24. To do. The more moisture that is adsorbed, the more moisture that permeates from the color former reservoir 26 and the longer the reach of the color changing portion 24 in the colored region. After a predetermined time has elapsed, the color reach of the color changing section 24 is viewed from the display section 16 and compared with the scale 18 to measure the amount of moisture transpiration. The measurement range here is 0-5 mg / cm ² . The measurement range can be set to an arbitrary value of about several μg / cm ^{2 to} 100 mg / cm ² by adjusting the shape, size, thickness, and the like of the color changing portion 24.

  The measurement time, reaction rate, measurement range, and the like of the moisture transpiration amount of the moisture transpiration amount measurement patch 10 can be arbitrarily adjusted by appropriately selecting the shape and area of the color changing portion 24. By increasing the area of the color changing portion 24, the measurement time is set longer, for example, set to 12 hours to 24 hours, and long time measurement is possible. Further, the adsorption rate can be adjusted by the area of the moisture permeable layer 34. Increasing the area of the moisture permeable layer 34 increases the reaction rate, and decreasing the area decreases it. By increasing the area of the moisture permeable layer 34, the amount of adsorbed moisture increases, so that the measurement sensitivity increases and the measurement time can be shortened. The adsorption rate can be arbitrarily adjusted by the combination of the thickness and area of the color changing portion 24, and the reaction rate becomes slow when the thickness or area is increased.

  The moisture transpiration amount measurement patch 10 of this embodiment can accurately measure the amount of moisture transpiration by being applied to the skin, and can be easily measured at low cost. Mental sweating is secreted in proportion to the degree of mental stimulation such as stress, excitement, and pain. By quantitatively examining the amount of sweating, mental sweating such as stress, excitement, and pain Stimulation can be quantified. For example, when the moisture transpiration amount measurement patch 10 is affixed to the palm of the hand and engaged in car driving, daily work, dangerous work, etc., the amount of sweat can be quantified to quantify the degree of stress. Furthermore, by applying the moisture transpiration measuring patch 10 for a long time, and by examining the amount of perspiration per unit time of various actions such as various work and life, how much mental stress is received from which work and life. It becomes possible to analyze easily. In addition, it is possible to measure the accumulated moisture amount for a long time.

  In addition, the moisture transpiration measurement patch 10 can measure stress caused by pain and anxiety of a patient during treatment or examination at a medical institution during treatment or continuously for a long time. In addition, it is possible to measure the relationship between students and employees at school and workplaces, the stress caused by bullying, and the general public can self-check their own state of mind. This helps to improve QOL (quality of life).

  Furthermore, in addition to mental sweating, insensitive transpiration can be measured to check the skin barrier function, skin care effect, moisturizing power, and rough skin. In addition, thermal sweating of the whole body such as limbs, back, and abdomen can be measured to check for non-hidrosis and night sweats. This can be used for diagnosis by dermatologists and beauty specialists, and the general public can quantitatively measure their skin condition at home or at any time.

  Moisture transpiration measurement patch 10 is a bandage-like patch that requires no measuring cell, measuring machine, recording device, personal computer, etc., is extremely easy to measure, has no sense of incongruity, is simple, and has a constant TEWL. It is easy to measure values such as integration of values, insensitive transpiration, moisture transpiration at each site, and night sweats during sleep. In addition, a plurality of locations can be measured simultaneously. Moreover, it is possible to continuously measure the amount of moisture transpiration at the applied site over a long period of time by applying it to an arbitrary site on the skin.

Printing unit 14 of the water loss measurement patch 10 may print the value of ^0mg / cm ^{2 ~5mg} / cm 2 in the memory 18 as may be other than the above is shown in FIG. 4, for example. The measurement range is 0 to 5 mg / cm ² corresponding to the scale 18. The measurement range can be set to an arbitrary value of about several μg / cm ^{2 to} 100 mg / cm ² by adjusting the shape, size, thickness, and the like of the color changing portion 24.

In this embodiment, in order to examine the accuracy of the moisture transpiration measurement patch of the present invention, the correlation between the value measured from the scale 18 by the moisture transpiration measurement patch 10 and the TEWL value measured by the TEWA meter was examined. The moisture transpiration measurement patch 10 was affixed to the forearms of 6 men and women aged 22 to 46 and measured for 5 hours in a room with a room temperature of 22 ± 1 ° C. and a humidity of 55%. In the measurement, the TEWL value (g / m ² ) was measured with the TEWA meter simultaneously with the recording of the change amount (mm) of the scale for a certain time. The results are shown in the graph of FIG. According to this, it was recognized that there was a significant correlation between the amount of change of the scale 18 of the moisture transpiration measurement patch 10 and the TEWL value.

  Next, a second embodiment of the present invention will be described with reference to FIGS. Here, the same members as those in the above embodiment are denoted by the same reference numerals, and description thereof is omitted. The moisture transpiration amount measurement patch 38 of this embodiment is provided with a transparent film 12 as a support. A printing unit 14 on which a predetermined pattern is printed is provided on the surface 12 a of the transparent film 12, and a transparent display unit 16 is provided at the center of the surface 12 a of the transparent film 12.

  An adhesive 22 is uniformly applied to the back surface 12 b of the transparent film 12. A first color changing portion 39 is provided on the back surface 12 b so as to cover one end portion of the display portion 16. The first color changing portion 39 is obtained by cutting filter paper, Japanese paper, or other cellulosic sheets into a predetermined shape, which is shorter than the longitudinal direction of the display portion 16, for example, is set to about half the length, and the width direction is It is set to a rectangle wider than the display unit 16. The first color changing portion 39 is provided so as to protrude from the one end portion of the display portion 16 to a predetermined length, and the protruding portion becomes the first color former storage portion 40. The color former 41 is adsorbed and dried in the first color former storage section 40.

  A second color changing portion 42 is provided on the surface of the first color changing portion 39 opposite to the transparent film 12. The second color changing section 42 is provided from the middle of the first color changing section 39 along the display section 16 beyond the tip of the display section 16, and is set to a rectangle wider than the first color changing section 39 in the width direction. Yes. A region from the middle corresponding to the first color changing portion 39 of the second color changing portion 42 to the boundary with the first color developing agent storage portion 40 becomes the second color forming agent storage portion 44. A color former 43 having a color different from that of the color former 41 of the first color changing section 39 is adsorbed and dried in the second color former storage section 44. Since the second color former storage unit 44 and the first color developer storage unit 40 are displaced from each other and exposed to the moisture permeable layer 52 described later, the moisture captured by the moisture permeable layer 52 is transferred to the first color developer. The storage unit 40 and the second color former storage unit 44 absorb moisture simultaneously. Each of the color formers 41 and 43 is mixed with a dissolution accelerator 29 (dissolution aid / dissolution accelerator).

  A transparent moisture-impermeable layer 46 coated with an adhesive 50 is interposed between the first color change portion 39 and the first color change agent storage portion 40 and the second color change portion 42 and the second color change agent storage portion 44 that are stacked on each other. Is provided to prevent the color formers 41 and 43 from being mixed. The moisture impermeable layer 46 extends to the vicinity of one end of the transparent film 12. A moisture-impermeable layer 48 is provided on the surface of the second color changing portion 42 opposite to the moisture-impermeable layer 46, and the end of the moisture-impermeable layer 48 extends to the vicinity of one end of the transparent film 12. . The second color former storage section 44 continuous with the second color changing section 42 protrudes outward from the end of the moisture impermeable layer 48 and is exposed. A pressure-sensitive adhesive 50 is uniformly attached to the surface of the moisture impermeable layer 48 opposite to the second discoloration portion 42.

  A moisture permeable layer 52 that covers the second color former storage unit 44 is provided on the back surface 12 b of the transparent film 12. The moisture permeable layer 52 is smaller than the transparent film 12 and has a size covering the second color changing portion 42 and the second color former storage portion 44. The portion of the moisture permeable layer 52 that is in contact with the moisture impermeable layer 48 is attached to the adhesive 50, and the portion that is in contact with the transparent film 12 is attached to the adhesive film 22. Further, the release sheet 36 is bonded to the back surface 12 b of the transparent film 12 with the adhesive 22 so as to cover the moisture permeable layer 52.

  Next, a method of using the moisture transpiration amount measurement patch 38 of this embodiment will be described. First, the release sheet 36 is peeled from the moisture transpiration measurement patch 38 to expose the adhesive 22. Then, the moisture transpiration measuring patch 38 is attached to the skin of the subject, for example, the palm. After sticking, leave it in that state for a predetermined time. At this time, the moisture permeable layer 52 captures the palm sweat generated, and the moisture is absorbed by the first color former storage unit 40 and the second color developer storage unit 44 so that the color formers 41 and 43 are melted. 39, penetrates and diffuses into the second color changing portion 42. Since the moisture-impermeable layer 46 is provided between the first color former storage unit 40 and the second color developer storage unit 44, the color formers 41 and 43 are not mixed. As the colorants 41 and 43 adsorb more water, the reach distance from the first color developer storage unit 40 and the second color developer storage unit 44 becomes longer. Although the moisture adsorption speeds of the first color changing portion 39 and the second color changing portion 42 may be equal, for example, the water adsorption speed of the second color changing portion 42 may be slowed by giving a difference between them.

  Immediately after the start of measurement, the color former 41 of the first color changing portion 39 can be seen from the display portion 16 of the transparent film 12. As the moisture adsorption progresses, the color former 41 stops when it reaches the end 39a of the first color change portion 39, and beyond that, the color former 43 of the second color change portion 42 can be seen from the display portion 16. become. Thereby, since the color former 41 and the color former 43 are different in color, it is surely understood that the water evaporation amount exceeds a certain value.

  The moisture transpiration amount measurement patch 38 of this embodiment has the same effect as that of the above embodiment, and furthermore, when the moisture evaporation amount exceeds a certain level, the color visible from the display unit 16 changes to a different color. Easily know that the amount of evaporation has exceeded a certain value, making it easy to measure. Since the color former 41 and the color former 43 are different in color, the degree of moisture evaporation is surely easy to see and can be measured accurately and quantitatively.

  In addition, the moisture transpiration amount measurement patch of the present invention is not limited to the above-described embodiments, and the pattern of the printing part of the transparent film can be freely changed. The material and shape of each member can be changed as appropriate. The color former storage part and the color change part may be separate from each other, and the color developer storage part may be laminated on the end of the color change part. The shape of the color changing portion may be a rectangular shape or a trapezoidal shape such that the portion farther from the color former storage portion becomes thinner to suppress a decrease in the adsorption speed on the tip side of the color changing portion. A plurality of color former storage portions and color change portions may be provided in parallel, or a plurality of different color sensitivities or sizes may be provided. In addition to the palm, the measurement target of the moisture transpiration amount measurement patch may be the face, neck, arm, back of the hand, foot, or the like. In addition to humans, it can be used to measure animal skin, plant leaves, fruit epidermis, and other substances that transpiration of trace amounts of water, including industrial applications.

10 Moisture transpiration measurement patch 12 Transparent film 14 Printing unit 16 Display unit 18 Scale 22, 32, 50 Adhesive 24, 39, 42 Color changing unit 26, 40, 44 Color developing agent storage unit 28, 41, 43 Color developing agent 29 Dissolution promotion Agents 30, 46, 48 Moisture impermeable layer 34, 52 Moisture permeable layer

Claims (8)

  A transparent film that is attached to the surface to be measured by an adhesive, a color former storage part that is provided on the adhesive side surface of the transparent film and adsorbs the color former, and is formed to be long in one direction connected to the color former storage part. And the color changing portion through which the solution of the color former permeates in the longitudinal direction, the moisture-impermeable layer covering the surface of the color changing portion opposite to the transparent film side, and the surface of the transparent film facing the adhesive side. A moisture permeable layer is provided to cover the color former storage part, and the transparent film is provided with a transparent display part that enables the color change part to be visually recognized, and is provided in a peripheral part of the display part along the longitudinal direction of the color change part. A moisture transpiration measuring patch, characterized in that a printing part with a scale is provided.   A plurality of the color changing portions are provided, and each of the color changing portions is provided with the color former storage portion. The plurality of the color changing portions are overlapped with each other to face the display portion. The discoloration portion located on the side closer to the display portion is formed shorter in the longitudinal direction than the discoloration portion located on the side far from the display portion, and a moisture-impermeable layer is formed between the discoloration portions. The moisture transpiration amount measuring patch according to claim 1, wherein the color formers of different colors are adsorbed to the plurality of color former reservoirs.   The moisture transpiration amount measurement patch according to claim 1 or 2, wherein a hydrophilic polymer material is mixed in the color former storage section as a dissolution accelerator for increasing the dissolution / penetration rate of the color former.   The moisture transpiration amount measuring patch according to claim 1 or 2, wherein a surfactant that accelerates the dissolution / penetration rate of the color former is mixed in the color former reservoir.   The moisture transpiration amount measuring patch according to claim 4, wherein the surfactant is a nonionic surfactant.   The moisture transpiration amount measurement patch according to claim 3, wherein the hydrophilic polymer material is polyethylene glycol.   The moisture transpiration amount measurement patch according to any one of claims 1 to 6, wherein a plurality of the discoloration section, the color former storage section, and the display section are provided. The moisture transpiration amount measuring patch according to any one of claims 1 to 6, wherein the color changing portion and the color former storage portion are formed of the same sheet material, and the color former storage portion is a solid material.

Images