JP3866999B2 - Discolored gel sheet - Google Patents

Description

【００１７】
この実施例に使用している着色剤は、ヤエガキ醗酵技研株式会社にて製造販売されている食品添加物
着色料製剤 メロン色D（クチナシ青色素とベニコウジ黄色素の混合品）と、同メーカー商品群のうちｐＨの変化又は体液内のタンパク質と接触して色が変わるスターレッドKL（コチニール色素）を配合したものである。
【００１８】
メロン色Dは、緑色となる。これにｐＨの変化及び体液と反応して色が変わるスターレッドKLを配合したもので両方の色が重なり、貼付前は、ｐＨが4.9付近で淡茶色を呈している。それが水分の減少によりｐＨ5.1で桃色を呈するようになる。人により、体液中のタンパク質と反応して赤色が濃くなる場合がある。
【００１９】
上記配合比率にて作成した含水ゲルシートを6名の被験者に対し6時間貼付した結果は下記のとおりである。
試験日 ： 平成14年2月15日
被験者 ：
20代男性：3名、30代男性：2名、40代男性：1名（計6名）
試験方法： サンプルを足の裏に6時間貼付し確認した。
試験結果を表２に示す。
【００２０】
ゲル膏体色の変化は下記のとおりである。
【表２】

【００２１】
試験結果に対する考察
全員が茶系統の色から淡桃色〜淡赤色の変色が起こり、1時間貼付後に4名が変色し、5時間貼付後に2名が変色している。この中で淡桃色に変化しているものはｐＨの変化により色が変わったものであり、桃色又は赤色に変化しているものは体液と反応して赤みが強まったと判断される。
【００２２】
【発明の効果】
この発明の変色ゲルシートは、張り替え時期を目で確認することができ、これまで以上に効果的な使用状態を維持することができる。そしてこれにより、無駄な張り替えや効果のない貼付を防止することができる。
【図面の簡単な説明】
【図１】 この発明の一実施形態の変色ゲルシートの図２のＩ−Ｉ線断面図である。
【図２】 この実施形態の変色ゲルシートの平面図である。
【符号の説明】
１ 支持体
２ 含水ゲル層
３ 樹脂フィルム
１０ 含水ゲルシート[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a discolored gel sheet having a water-containing gel used for moisture retention and cooling.
[0002]
[Prior art]
Conventionally, a highly water-containing gel sheet for cooling to be applied to the body has been replaced when moisture in the plaster is scattered due to body temperature after application and the cooling effect is lost. In addition, the adhesive strength of the water-containing gel plaster body was reduced due to the scattering of water, and the paste was also replaced when it peeled off from the body surface and dropped.
[0003]
[Problems to be solved by the invention]
The high water content gel sheet of the above prior art has various durations of effective function (hereinafter referred to as “duration”) depending on the person, and the gel sheet is required to be stuck during the duration. Yes. However, in the case of the above prior art, even if the pasting time is fixed or the pasting is performed with the original sense of the paster, even if it is still effective, even if it is pasted or no longer effective There was a problem that the pasting was done regardless of the duration of the pasting.
[0004]
The present invention has been made in view of the above-described problems of the prior art, and by adding a colorant of an organic natural material, the replacement time is informed based on the fact that the colorant is discolored, and effective pasting is performed. An object is to provide a discolorable gel sheet that can be replaced.
[0005]
[Means for Solving the Problems]
The present invention provides a discoloration gel sheet comprising a breathable support and a water-containing gel laminated on the support, and an organic natural material colorant is added to the paste of the water-containing gel so that the color can be changed over time. It is. The colorant discolors when it comes into contact with a change in water content or pH in the hydrated gel plaster, or a secretion from the body. The colorant may be a combination of a plurality of colorants having different colors or a plurality of colorants having different color changing conditions.
[0006]
As the colorant used in the present invention, as a colorant that develops a color only within an arbitrary pH range, red cabbage dye, red omelet dye, red radish dye, red beet dye, atner dye, turmeric dye, elderberry dye, cacao dye , Oyster pigment, Carotene pigment, Gardenia blue pigment, Gardenia red pigment, Gardenia yellow pigment, Perilla pigment, Pepper pigment, Grape juice pigment, Grape skin pigment, Beniculium pigment, Beniculium yellow pigment, Safflower yellow pigment, Purple potato pigment, Murasaki corn There are pigments. Moreover, a cochineal dye, a rack dye, or the like can be used as a colorant that changes the color of the color by reacting with a change in pH or protein.
[0007]
According to the present invention, the color of the plaster changes due to the change in pH of the colorant due to the scattering of moisture in the plaster, thereby informing the time for replacement. Alternatively, the change in the color of the paste due to contact with the protein in the secretory fluid that has emerged from the body provides an indication of the time for replacement.
[0008]
In the present invention, the colorant may be any color as long as it changes color by contact with a change in pH caused by a change in the amount of water in the plaster or body fluid that comes out with sweat, etc. The color after the change can be confirmed and blended appropriately to make a preferable color.
[0009]
Moreover, the said water-containing gel contains suitably 1-20% of 1 or several synthetic polymers chosen from polyvinyl alcohol, polyvinyl pyrrolidone, sodium carboxymethylcellulose, sodium polyacrylate, etc., and water | moisture content 50-80%.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show an embodiment of the present invention. In the discoloration gel sheet 10 of this embodiment, a paste layer 2 is formed on a support 1, and the paste layer 2 is covered with a release film 3. FIG. Yes. As long as the support 1 does not have infiltration of the gel plaster layer and has the rigidity and flexibility necessary for ease of sticking and peeling, if it is breathable, such as a nonwoven fabric or a woven fabric, Any material can be used. For example, a nonwoven fabric made of a natural material or a synthetic fiber can be considered. The release film 3 is composed of a non-breathable synthetic resin film and is not particularly limited in the present invention, and a known film can be used.
[0011]
The laminate of the support 1, the gel plaster layer 2 and the release film 3 is usually elliptical in planar shape, but can take any shape such as a circle, a rectangle, and various polygons.
[0012]
The water-containing gel sheet 10 of this embodiment is preferably transported and stored in a sealed container that prevents contact with the outside air by a four-side seal with an aluminum pouch or the like and prevents moisture volatilization.
[0013]
Next, the usage method of the water-containing gel sheet 1 of this embodiment is demonstrated. In use, first, the release film 3 is peeled off, and the gel plaster layer 2 is applied to the body part to be applied so as not to be wrinkled. As time passes, the water in the gel paste layer 2 becomes water vapor and evaporates. When the moisture in the gel paste layer 2 decreases, the pH in the gel paste layer 2 changes, and thereby the colorant contained in the gel paste layer changes color. Then, the gel plaster layer 2 is pasted after confirming the color change to a predetermined color.
[0014]
In addition, the discoloration gel sheet of this invention is not limited to said each embodiment, A nonwoven fabric does not ask | require hydrophilic non-hydrophilic property. Furthermore, the nonwoven fabric may be a laminate of hydrophilic fibers and hydrophobic fibers, and if a nonwoven fabric of hydrophobic fibers is laminated on the surface side, it should be a discolored gel sheet that does not stick to the surface. Can do.
[0015]
【Example】
Next, examples of the present invention will be described. Table 1 shows the amount of paste contained in the hydrogel sheet according to one embodiment of the present invention.
[0016]
[Table 1]

[0017]
The colorant used in this example is a food additive colorant formulation manufactured and sold by Yaegaki Fermentation Giken Co., Ltd., Melon Color D (mixture of gardenia blue pigment and Benikouji yellow), and the manufacturer's product In the group, Star Red KL (cochineal dye) that changes color upon contact with changes in pH or protein in body fluid is blended.
[0018]
Melon color D is green. This is a blend of Star Red KL, which changes its pH by reacting with a change in pH and body fluid, and both colors overlap. Before sticking, it shows a light brown color with a pH of around 4.9. It becomes pink at pH 5.1 due to a decrease in moisture. Some people react with proteins in body fluids to darken the red color.
[0019]
The results of pasting the hydrogel sheet prepared at the above mixing ratio for 6 subjects for 6 hours are as follows.
Test date: February 15, 2002 Subject:
Men in their 20s: 3, Men in their 30s: 2, Men in their 40s: 1 (6 people in total)
Test method: A sample was affixed to the sole of the foot for 6 hours for confirmation.
The test results are shown in Table 2.
[0020]
The change in gel color is as follows.
[Table 2]

[0021]
Consideration for the test results All of them had a pale pink to light red color change from the color of the tea line, 4 people changed color after 1 hour, and 2 people changed color after 5 hours. Of these, those that have changed to light pink are those whose color has changed due to changes in pH, and those that have changed to pink or red are judged to have increased redness by reacting with body fluids.
[0022]
【The invention's effect】
The discoloration gel sheet of the present invention can visually check the re-uploading time, and can maintain a more effective use state than ever. Thereby, useless re-installation and sticking without effect can be prevented.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view taken along the line II of FIG. 2 of a discoloration gel sheet according to an embodiment of the present invention.
FIG. 2 is a plan view of a discoloration gel sheet of this embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support body 2 Water-containing gel layer 3 Resin film 10 Water-containing gel sheet

Claims (3)

It is provided with a breathable support and a hydrous gel laminated on the support, and in the paste of the hydrous gel, organic natural material colorant , red cabbage dye, red omelet dye, red radish dye, red beet Dye, Atner Dye, Turmeric Dye, Elderberry Dye, Cacao Dye, Oyster Dye, Carotene Dye, Gardenia Blue Dye, Gardenia Red Dye, Gardenia Yellow Dye, Perilla Dye, Pepper Dye, Grape Juice Dye, Grape Skin Dye, Benikouji Dye, One or a plurality of coloring agents selected from Benikouji yellow, safflower yellow, purple corn pigment, and purple corn pigment are added, and the hydrate gel paste over time due to changes in the amount of water and pH in the hydrate gel paste discoloration gel sheet, characterized in that but was set to change color. A hydrous support comprising a breathable support and a hydrogel laminated on the support, wherein the hydrogel is coated with a cochineal dye and / or a rack dye, which is an organic natural material colorant. discoloration gel sheet, characterized in that changes color upon contact with the protein of secretions from changes or body plaster body p H.   3. The discoloration gel sheet according to claim 1 or 2, wherein the colorant is a combination of a plurality of colorants having different colors and a plurality of colorants having different discoloration conditions.

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