JP3115301U - Cooling sheet and portable cooling sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently maintain a high cooling effect for a long time by using a water-containing gel having a high water content and low adhesiveness for the cooling sheet, and sufficiently preventing the cooling sheet from being easily peeled off to a sticking part of the body. Make it stickable.
SOLUTION: A water-insoluble adhesive 12 is applied to one side of a holding sheet 11 in a cooling sheet 10, while a gel layer comprising a water-containing gel g having a high water content and low adhesiveness on the opposite side of the holding sheet. 14 was formed, and the above hydrous gel was filled in the holding sheet, and the gel layer was held on the holding sheet.
[Selection] Figure 1

Description

  The present invention relates to a cooling sheet and a portable cooling sheet. In particular, the cooling sheet maintains a high cooling effect for a long time, and it is sufficient to prevent the cooling sheet from being easily peeled off from the body application site. It is characterized in that it can be affixed to.

  In recent years, cooling sheets have been used for the purpose of cooling fever, inflamed areas, and moisturizing and refreshing the skin.

  And as such a cooling sheet | seat, generally, what provided the adhesive water-containing gel which made water-soluble polymer, such as polyacrylic acid, hold | maintain to olefin type nonwoven fabric etc. is used.

  Here, in the cooling sheet provided with the above-mentioned adhesive water-containing gel, when the part of the above-mentioned adhesive water-containing gel is applied to the sticking part of the body, the cooling water sheet is formed by this adhesive water-containing gel. It was not sufficiently attached to the application site and easily removed from the application site.

  However, in the case of the above-mentioned adhesive water-containing gel, there is a problem that the water content is generally low and a high cooling effect cannot be maintained for a long time.

  On the other hand, when the water content in the water-containing gel as described above is increased to increase the cooling effect, the adhesiveness of the water-containing gel is greatly reduced, and the adhesion of the cooling sheet to the application site is reduced. There was a problem that was easily removed from the affixed site.

  For this reason, in recent years, a cooling sheet has been proposed in which a non-woven fiber layer coated with an adhesive on one side is impregnated with a gel of a water-soluble polymer material having a water content of 90% by weight or more (for example, (See Patent Document 1).

However, when the nonwoven fabric fiber layer is impregnated with the water-soluble polymer material gel as described above, the amount of gel that can be impregnated in the fiber layer is limited, Still, it has been difficult to maintain a high cooling effect for a long time.
JP 2002-248121 A

  This device is intended to solve the above-mentioned problems in the cooling sheet, so that a high cooling effect can be maintained for a long time by using a water-containing gel having a high moisture content and low adhesion to the cooling sheet. In addition, it is an object of the present invention to make it possible to attach the cooling sheet sufficiently so that it does not easily peel off from the application site of the body, and to keep the cooling sheet for a long time and to carry it easily. .

  In the cooling sheet of this device, in order to solve the above-described problems, a water-insoluble adhesive is applied to one side of the holding sheet, while the water content on the opposite side of the holding sheet is high and adhesive. A gel layer made of a low hydrous gel was formed and the above hydrous gel was filled in a holding sheet so that the gel layer was held on the holding sheet.

  Here, as the above-mentioned water-containing gel, in order to obtain a high cooling effect for a long time, the water content is preferably 65% by weight or more, more preferably 90% by weight or more. Use it. The upper limit of the moisture content is not particularly limited, but is considered to be about 99% by weight from the viewpoint of the shape retention of the above water-containing gel.

  In obtaining such a water-containing gel, a water-soluble polymer having high water retention and excellent shape retention is used, and this water-soluble polymer may be either synthetic or natural. In particular, it is preferable to use a natural water-soluble polymer excellent in water retention and shape retention, such as carrageenan, gelatin, pectin, locust bean gum, xanthan gum, gellan gum, Ernest gum, agarose, dextrin, glucomannan. Polyglutamic acid and a salt thereof can be used. In addition, synthetic polymers can be mixed with these natural polymers. Suitable synthetic polymers include, for example, polyacrylic acid, sodium polyacrylate, carboxyvinyl polymer, polyvinyl alcohol, polyvinylpyrrolidone, carboxy Examples include methyl cellulose, Ernest gum, methyl cellulose, hydroxypropyl cellulose, and hydroxypropyl methyl cellulose, but are not particularly limited thereto.

  Further, the holding sheet is not limited as long as the hydrogel penetrates and is filled and the gel layer is sufficiently held. For example, fibers such as nonwoven fabric and woven fabric using various fibers. A fiber structure such as a body or paper can be used. In particular, it is preferable to use a water-absorbing hydrophilic fiber structure so that moisture is also retained in the retaining sheet.

  In the cooling sheet, as the water-insoluble adhesive to be applied to one side of the holding sheet, various water-insoluble adhesives such as an acrylic adhesive, a rubber-based adhesive, and a vinyl ether-based adhesive can be used. Can be used.

  Here, as said acrylic adhesive, what combined the following main monomer and submonomer is mentioned. Examples of the main monomer include ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, isooctyl acrylate, decyl acrylate, decyl methacrylate, dodecyl acrylate, dodecyl methacrylate, and the like. Moreover, as a submonomer, acrylic acid, vinyl acetate, methyl acrylate, methyl methacrylate, maleic anhydride, 2-hydroxyethyl acrylate, etc. are mentioned.

  Moreover, as a rubber-type adhesive, what combined the following elastomer and tackifier is mentioned. Examples of the elastomer include natural rubber, synthetic polyisoprene rubber, styrene / butadiene rubber, styrene / isoprene block copolymer, polyisobutylene, butyl rubber, SIS, SBR, and SBRS. Examples of tackifiers include rosin, hydrogenated rosin, rosin ester, hydrogenated rosin ester, polyterpene, terpene phenol, phenol resin, xylene resin, coumarone indene resin, other aliphatic resins (C5 resins), petroleum Resin, alicyclic hydrocarbon resin (hydrogenated aromatic resin), and the like.

  In addition, softeners (plasticizers), absorption accelerators, polyhydric alcohols, silicone oils, inorganic fillers, antioxidants (ultraviolet absorbers), and the like are added to the above-mentioned pressure-sensitive adhesive as necessary. be able to.

  Here, as the softening agent (plasticizer), polybutene, polyisobutylene, dioctyl phthalate, dibutyl phthalate, diethyl phthalate, liquid rosin ester, chlorinated paraffin, process oil, lanolin, IPM, silicone, petrolatum, solid paraffin, Liquid paraffin, plaster pace, beeswax, menthol, limonene, pinene, piperiton, terpinol, carveol, almond oil, olive oil, camellia oil, persic oil, peppermint oil, sesame oil, soybean oil, mink oil, cottonseed oil, corn oil, safflower Oil, grape oil, macadamia nut oil, egg yolk oil, safflower oil and the like.

  Further, the above absorption enhancer promotes absorption of active ingredients such as medicinal ingredients and cosmetic ingredients, and many of them overlap with the above softeners, and lanolin, liquid paraffin, beeswax, menthol, limonene, pinene. , Piperitone, terpinol, carveol, jojoba oil, almond oil, olive oil, camellia oil, persic oil, mint oil, sesame oil, soybean oil, mink oil, cottonseed oil, corn oil, safflower oil, grape oil, macadamia nut oil, egg yolk oil, Examples include safflower oil.

  Examples of the polyhydric alcohols include glycerin, propylene glycol, octanediol, polyethylene glycol, D-sorbit, crotamiton and the like.

  Examples of the silicone oil include methyl siloxane, methyl phenyl polysiloxane, and dodecamethyl polysiloxane.

  Examples of the inorganic filler include zinc oxide, titanium oxide, and calcium carbonate.

  Moreover, BHT, DTBHQ, etc. are mentioned as said antioxidant (ultraviolet absorber).

  In addition, when applying such a water-insoluble adhesive to one side of the holding sheet, if the thickness becomes too thick, the cooling effect due to moisture is suppressed from being transmitted to the application site through the water-insoluble adhesive. As a result, if the thickness becomes too thin, the cooling sheet will be easily peeled off from the application site, so the thickness of the water-insoluble adhesive applied to one side of the holding sheet is set appropriately. It is necessary to be within a range of preferably 30 to 300 μm, more preferably 40 to 150 μm.

  In addition, when a water-insoluble adhesive is applied to one side of the holding sheet to provide an adhesive layer, the pressure-sensitive adhesive is related to the surface properties of the holding sheet and the thickness of the adhesive to be applied. Is applied to the entire surface of one side of the holding sheet, and the adhesive layer is formed on the entire surface. In some cases, a pressure-sensitive adhesive layer is not formed.

  In addition, after forming a pressure-sensitive adhesive layer by applying a water-insoluble pressure-sensitive adhesive mixed with fine powder of water-soluble polymer and short fibers made of water-insoluble hydrophilic polymer to the holding sheet, Treatment to elute the fine powder of the water-soluble polymer to form a porous pressure-sensitive adhesive layer, or to a short fiber made of a water-insoluble hydrophilic polymer contained in the pressure-sensitive adhesive layer. It is also possible to impregnate moisture and guide the moisture contained in the gel layer through the short fibers to the application site.

  Further, in the portable cooling sheet in this device, the surface of the holding sheet to which the water-insoluble adhesive is applied and the release paper is attached is positioned on the bottom side in the housing recess provided in the container body. And forming a gel layer made of a water-containing gel with a high water content and low adhesion on the opposite surface of the holding sheet, and filling the water-containing gel into the holding sheet, The above cooling sheet was accommodated in the interior, and the opening on the upper surface of the accommodation recess was closed by the closing member.

  In the cooling sheet in this device, a water-insoluble adhesive is applied to one side of the holding sheet as described above, while a gel composed of a hydrous gel having a high moisture content and low adhesiveness on the opposite side of the holding sheet. A layer is formed and the above hydrous gel is filled in the holding sheet so that the gel layer is held on the holding sheet. Therefore, the cooling sheet is attached to the body application site by the water-insoluble adhesive. When affixed, the moisture contained in the gel layer with the high water content penetrates into the water-insoluble adhesive through the holding sheet, and the cooling effect by the moisture is transmitted to the affixed site so that a high cooling effect can be obtained for a long time. become.

  In the cooling sheet in this device, the water-insoluble adhesive causes the cooling sheet to be sufficiently adhered to the application site of the body, and the gel layer is sufficiently retained on the holding sheet. Thus, the gel layer is not detached from the holding sheet, and the cooling sheet is not easily detached from the application site.

  Further, like the portable cooling sheet in the present invention, the surface of the holding sheet to which the water-insoluble adhesive is applied and the release paper is attached is positioned on the bottom side in the housing recess provided in the container body. And forming a gel layer made of a water-containing gel with a high water content and low adhesion on the opposite surface of the holding sheet, and filling the water-containing gel into the holding sheet, When the cooling sheet is accommodated in the inside and the opening on the upper surface of the accommodation recess is closed by the closing member, the portable cooling sheet can be manufactured together with the manufacturing of the cooling sheet.

  Further, in order to accommodate the cooling sheet in the accommodating recess provided in the container body with the release paper attached to the water-insoluble adhesive applied to the holding sheet as described above, the gel layer of the cooling sheet Even if the water is removed from the water, it is prevented that the water continues to contact the water-insoluble adhesive and the adhesiveness of the water-insoluble adhesive is reduced.

  Further, since the opening on the upper surface of the housing recess that houses the cooling sheet is closed by the closing member as described above, it is possible to prevent moisture from leaking or evaporating from the gel layer of the cooling sheet. The cooling sheet can be stored for a long time and can be easily carried in the state of being accommodated in the accommodating recess provided in the.

  Hereinafter, a cooling sheet and a portable cooling sheet according to an embodiment of the present invention will be specifically described with reference to the accompanying drawings. Note that the cooling sheet and the portable cooling sheet according to the present invention are not particularly limited to those shown in the following embodiments, and can be appropriately changed and implemented without departing from the scope of the invention.

  In the cooling sheet 10 according to this embodiment, as shown in FIG. 1, a water-insoluble adhesive 12 is provided on one surface of a holding sheet 11 made of a fiber structure such as a nonwoven fabric or a woven fabric using hydrophilic fibers. The release paper 13 is attached to the water-insoluble adhesive 12. On the other hand, a gel layer 14 composed of a water-containing gel g having a high moisture content and a low viscosity is formed on the surface of the holding sheet 11 on the side opposite to the water-insoluble adhesive 12, and the adhesive layer having a high moisture content and being sticky. The low hydrous gel g is infiltrated and filled into the holding sheet 11 to hold the gel layer 14 on the holding sheet 11.

  And in using this cooling sheet | seat 10, the release paper 13 attached to the water-insoluble adhesive 12 is peeled, and this water-insoluble adhesive 12 is affixed on the sticking site | part of a body.

  If it does in this way, the water | moisture content contained in the gel layer 14 of high moisture content permeate | transmits the water-insoluble adhesive 12 through the holding sheet 11 as mentioned above, and cooling by water | moisture content through this water-insoluble adhesive 12 The effect is transmitted to the application site, and a high cooling effect can be obtained for a long time.

  In addition, the cooling sheet 10 is appropriately attached to the application site by the water-insoluble adhesive 12 and the gel layer 14 is sufficiently held by the holding sheet 11. Does not come off the holding sheet 11 or the cooling sheet 10 easily comes off from the site of application.

  In addition, when the cooling sheet 10 is stuck on the sticking part of the body in this way, the high moisture content gel layer 14 comes into contact with the clothing or the like, and the clothing or the like gets wet by the moisture contained in the gel layer 14. In order to prevent this, it is also possible to provide a nonwoven fabric or the like on the surface of the gel layer 14 on the side opposite to the holding sheet 11.

  Here, the planar shape of the cooling sheet 10 is not particularly limited, and the cooling sheet 10 can be appropriately changed according to an application site to which the cooling sheet 10 is attached. In particular, in the case where the cooling sheet 10 is attached to the neck, as shown in FIG. 2, the planar shape is a substantially bowl shape in which the central portion 10a is constricted and the side portions 10b on both sides are widened. When it is used, even when the neck is twisted, the cooling sheet 10 is prevented from being easily detached, and the side portions 10b on both sides widened are pasted so as to cover the carotid arteries. In the case of sudden heat generation, a sufficient cooling effect can be obtained.

  Moreover, although not shown in figure, this cooling sheet | seat 10 can be formed by making it elongate and sticking so that it may wrap around inflamed sites, such as an arm and a leg. When the cooling sheet 10 is attached in such a manner as described above, it can be firmly attached so as not to be easily detached without significantly losing the mobility of movable parts such as arms and legs. When the cooling sheet 10 is wrapped around a movable part such as an arm or a foot in this way, the above holding sheet 11 is made of a stretchable material so as not to further impair the mobility. It is preferable.

  In addition, aroma oil or a pharmacologically active substance is contained in the water-containing gel g, and these substances are gradually transmitted from the cooling sheet 10 to the site of the body, so that the effects of these substances can be obtained together with the cold and moisturizing effects. It can also be done.

  Here, as the aroma oil, essential oil components (essential oils) generally used for aromatherapy can be used as they are. Examples of the essential oil component include those described in Wonder Cellar “84 essential oil components for aromatherapy”, Fragrance Journal. Specifically, Anise, Angelica, Benzo, Immortelle, Chamomile, Garlic, Cardamom, Galvanam, Caraway, Carrot Seed, Guayac Wood, Grapefruit, Cybless, Cedarwood, Star Anise, Sage, Geranium, Celery, Thyme, Tarragon, Terpin , Frankincense, violet, pine, parsley, fennel, black pepper, bodaiju flower, lemon, lemongrass, rosemary, laurel, shimotsukegiku, shimotsueso, cornflower, almond, arnica, fennel, enishida, watercress, gentian, ginger, plum Pear, seaweed, dandelion, chimo, chorei, capsicum, green rose, mint, ash, bullock, melissa, peach, mistletoe, eucalyptus, yokuinin, Vendor, there may be mentioned extracts from forsythia, and the like otherwise thereto. Examples of other oil components include liquid paraffin, silicone oil, coconut oil, macadamia oil, sucurawan, olive oil, orange oil, jojoba oil, and the like.

  Further, as a pharmacologically active substance, it may overlap with the above-mentioned aroma oil. Sex azulene, acrinol and the like.

  In addition to the above, vitamins such as vitamins A, B, C, and E, minerals such as selenium and zinc, fruit extracts such as apples, oranges, lemons, and kiwis, fruit juices, and the like can be appropriately contained. .

  Next, a method for manufacturing the portable cooling sheet 1 in which the cooling sheet 10 as described above is accommodated in the accommodating recess 21 of the container body 20 will be described.

  First, the water-insoluble adhesive 12 is applied to one side of the holding sheet 11 as described above, and the release paper 13 is attached to the water-insoluble adhesive 12 as shown in FIG. The holding sheet 11 is accommodated in the accommodating recess 21 of the container body 20 with the release paper 13 facing down. Thereafter, the gel solution is supplied into the accommodating recess 21 of the container body 20, and the surface of the holding sheet 11 on the side opposite to the water-insoluble adhesive 12 has a high water content as shown in FIG. And forming a gel layer 14 composed of a hydrous gel g having a low tackiness, and allowing the gel solution to penetrate into the holding sheet 11 so that the hydrous gel g having a high moisture content and a low tackiness is contained in the holding sheet 11. In this state, a closing member 30 made of an airtight sheet is attached to the upper surface of the container body 20 to close the upper surface of the housing recess 21.

  If it does in this way, it will come to be able to manufacture the portable cooling sheet 1 which accommodated this cooling sheet 10 in the accommodation recessed part 21 of the container body 20 with manufacture of the above cooling sheets 10. FIG.

  In using the cooling sheet 10 in the portable cooling sheet 1, the airtight sheet 30 is removed from the upper surface of the container body 20, and the cooling sheet 10 is taken out from the housing recess 21. As described above, the release paper 13 is peeled off from the water-insoluble adhesive 12, and the water-insoluble adhesive 12 is applied to the attachment site of the body.

1 is a schematic sectional view showing a cooling sheet according to an embodiment of the present invention. It is the schematic plan view which showed the example of the planar shape suitable for making the cooling sheet which concerns on said embodiment stick to a neck. It is sectional explanatory drawing which showed the process of manufacturing the portable cooling sheet which accommodated the cooling sheet which concerns on said embodiment in the accommodation recessed part of a container body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Portable cooling sheet 10 Cooling sheet 10a Center part 10b Side part 11 Holding sheet 12 Water-insoluble adhesive 13 Release paper 14 Gel layer 20 Container body 21 Accommodating recess 30 Closing member g Hydrous gel

Claims (5)

  While a water-insoluble adhesive is applied to one side of the holding sheet, a gel layer made of a water-containing gel having a high water content and low adhesiveness is formed on the opposite surface of the holding sheet, and the water-containing gel is A cooling sheet filled in a holding sheet, wherein the gel layer is held on the holding sheet.   The cooling sheet according to claim 1, wherein the water content in the water-containing gel is 65% by weight or more.   The cooling sheet according to claim 1 or 2, wherein the holding sheet is composed of a fiber structure.   The cooling sheet according to any one of claims 1 to 3, wherein the holding sheet has stretchability.   Set so that the surface of the holding sheet to which the water-insoluble adhesive is applied and the release paper is attached is positioned on the bottom side in the housing recess provided in the container body, A gel layer made of a water-containing gel having a high water content and low adhesiveness is formed on the surface, and the water-containing gel is filled in a holding sheet, and any one of the above claims 1 to 3 is placed in the housing recess. A portable cooling sheet characterized in that the cooling sheet described in item 1 is accommodated, and the opening on the upper surface of the accommodating recess is closed by a closing member.

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