JP5615622B2

JP5615622B2 - Heat dissipation pad

Info

Publication number: JP5615622B2
Application number: JP2010184897A
Authority: JP
Inventors: 高尾　嘉文; 嘉文高尾
Original assignee: 明広商事株式会社
Priority date: 2010-08-20
Filing date: 2010-08-20
Publication date: 2014-10-29
Anticipated expiration: 2030-08-20
Also published as: JP2012040226A

Description

本発明は、顔や首回りなどに付着させて肌面の熱を放散するための放熱パッドに関する。 The present invention relates to a heat dissipating pad for dissipating heat on the skin surface by adhering it to the face, neck or the like.

肌面などを冷却するための冷却シートとして、例えば不織布の片面に、ポリアクリル酸を基材とする冷却用組成物を５００〜５０００μｍの厚みで展延塗布したものが公知である（特許文献１）。そこでは、冷却用組成物に水を含浸させておき、冷却用組成物の表面を額、目元、首回りなどの肌面に貼り付けて、水の蒸散作用で肌面の熱を放散する。冷却シートを予め冷蔵庫などで冷却しておき、冷却用組成物の冷熱によって肌面を冷却することもできる。 As a cooling sheet for cooling the skin surface or the like, for example, a sheet in which a cooling composition based on polyacrylic acid is spread and applied to a thickness of 500 to 5000 μm on one side of a nonwoven fabric is known (Patent Document 1). ). There, water is impregnated in the cooling composition, and the surface of the cooling composition is attached to the skin surface such as the forehead, eyes, and neck, and the heat of the skin surface is dissipated by the transpiration action of water. The cooling sheet can be cooled in advance with a refrigerator or the like, and the skin surface can be cooled by the cold heat of the cooling composition.

特許文献２においては、水不透過性フィルムと、合成パルプを含有する繊維シートと、ポリオレフィン製不織布を構成材にして、これらの構成材を記載順に積層して吸熱シートを構成している。使用時には、不織布の表面から水を供給して繊維シートに含浸させ、水不透過性フィルムを肌面に密着して、繊維シートに含まれる水が不織布を介して気化するときの蒸散作用によって肌面の熱を放散する。この吸熱シートは、繊維シートに水を補給することにより、繰り返し放熱作用を発揮できる。 In Patent Document 2, a water-impermeable film, a fiber sheet containing synthetic pulp, and a non-woven fabric made of polyolefin are used as constituent materials, and these constituent materials are laminated in the order of description to constitute an endothermic sheet. When in use, water is supplied from the surface of the nonwoven fabric to impregnate the fiber sheet, the water-impermeable film is adhered to the skin surface, and the skin contained by the transpiration when water contained in the fiber sheet is vaporized through the nonwoven fabric. Dissipates surface heat. This endothermic sheet can exhibit a heat radiation effect repeatedly by supplying water to the fiber sheet.

本発明の放熱パッドは、例えばアルミニウムが蒸着された外装フィルムで含水シートの外面を覆うが、このようにアルミニウム箔を併用する放熱シートは特許文献３に公知である。そこでは、アルミニウム箔の片面に例えば不織布を裏打ちし、これを波形に屈曲したのち、波形の山部分を断面コ字状に成形して、放熱シートを形成している。アルミニウム箔には、予め小孔またはスリットが形成してある。使用時には、アルミニウム箔を肌面に密着して、肌面に発生した汗を小孔を介して不織布に吸収させ、汗が気化するときの蒸散作用によって肌面を冷却する。 The heat dissipating pad of the present invention covers the outer surface of the water-containing sheet with, for example, an exterior film on which aluminum is vapor-deposited. In this case, for example, a non-woven fabric is lined on one side of an aluminum foil, and this is bent into a corrugated shape, and then the corrugated mountain portion is formed into a U-shaped cross section to form a heat dissipation sheet. Small holes or slits are formed in advance in the aluminum foil. At the time of use, the aluminum foil is brought into close contact with the skin surface, the sweat generated on the skin surface is absorbed into the nonwoven fabric through the small holes, and the skin surface is cooled by the transpiration action when the sweat is vaporized.

特開２００２−２４１７４７号公報（段落番号００４６〜００６０、図１）JP-A-2002-241747 (paragraph numbers 0046 to 0060, FIG. 1) 特開２００８−２０６９７４号公報（段落番号００３４）JP 2008-206974 A (paragraph number 0034) 特開２００５−１１９０６８号公報（段落番号００２８、図１）Japanese Patent Laying-Open No. 2005-111068 (paragraph number 0028, FIG. 1)

特許文献１の冷却シートは、不織布と、その片面に塗布したポリアクリル酸等を基材とする冷却用組成物とで構成するので、コストが高く付く。繰り返し使用することはできるが、冷却用組成物が強い粘着力を備えているため、塵埃などの異物が冷却用組成物に付着しやすく、衛生的な状態を維持するのが難しい。冷却用組成物によっては、肌面が荒れるおそれがある。 Since the cooling sheet of Patent Document 1 is composed of a nonwoven fabric and a cooling composition based on polyacrylic acid or the like applied to one surface thereof, the cost is high. Although it can be used repeatedly, since the cooling composition has a strong adhesive force, foreign substances such as dust are likely to adhere to the cooling composition, and it is difficult to maintain a hygienic state. Depending on the cooling composition, the skin surface may be roughened.

その点、特許文献２の吸熱シートでは、水不透過性フィルムと、繊維シートと、ポリオレフィン製不織布とを記載順に積層して構成するので、特許文献１の冷却シートに比べて吸熱シートの全体コストを削減できる。また、吸熱シートの取り扱いに注意することにより、異物の付着を避けて衛生的な状態で吸熱シートを繰り返し使用することができる。しかし、水不透過性フィルムを肌面に密着させて、肌面が濡れるのを防ぐので、肌面の熱を水が含浸された繊維シートへ効果的に伝えることができない。また、繊維シートおよび表面の不織布は、それぞれ水とともに空気を含んでいるため、空気の層が熱の発散を妨げ、熱が繊維シートの内部にこもって放熱効果が持続しにくい。 In that respect, since the heat-absorbing sheet of Patent Document 2 is formed by laminating a water-impermeable film, a fiber sheet, and a polyolefin nonwoven fabric in the order of description, the total cost of the heat-absorbing sheet compared to the cooling sheet of Patent Document 1 Can be reduced. Further, by paying attention to the handling of the endothermic sheet, the endothermic sheet can be repeatedly used in a hygienic state while avoiding the adhesion of foreign matters. However, since the water-impermeable film is brought into close contact with the skin surface to prevent the skin surface from getting wet, the heat of the skin surface cannot be effectively transferred to the fiber sheet impregnated with water. Moreover, since the fiber sheet and the nonwoven fabric on the surface each contain air together with water, the air layer hinders the heat from being diffused, and the heat is trapped inside the fiber sheet, so that the heat dissipation effect is hardly sustained.

特許文献３の放熱シートは、汗が気化するときの蒸散作用によって肌面の熱を放散するので、冷涼感が得られにくく、むしろ放熱シートを肌面に装着することによって、使用者に違和感や暑苦しさを感じさせてしまうおそれがある。 The heat dissipating sheet of Patent Document 3 dissipates heat on the skin surface due to the transpiration action when sweat evaporates, so that it is difficult to obtain a cool feeling. Rather, by attaching the heat dissipating sheet to the skin surface, There is a risk of feeling hot.

本発明の目的は、全体コストが少なくて済み、しかも肌面の熱を効果的に放散でき、さらに衛生的な状態で繰り返し使用することができる放熱パッドを提供することにある。 An object of the present invention is to provide a heat dissipating pad that can be used at a low overall cost, can dissipate heat on the skin surface effectively, and can be used repeatedly in a sanitary state.

本発明に係る放熱パッドは、水等の液体を含浸する保液体１と、保液体１の上下面を覆う被覆シート２とで構成する。被覆シート２は、表面に通気穴７の一群が開口してあるプラスチックフィルム５で形成する。上下の被覆シート２と保液体１とは、少なくとも通気穴７の内面周縁において一体化する。片方の被覆シート２を肌面に付着した使用状態において、保液体１に含浸させた液体の一部が通気穴７から滲み出して肌面に付着することを特徴とする。被覆シート２と保液体１とは、接着あるいは熱溶着によって一体化することができる。 The heat dissipating pad according to the present invention includes a retentive liquid 1 impregnated with a liquid such as water, and a covering sheet 2 that covers the upper and lower surfaces of the retentive liquid 1. The covering sheet 2 is formed of a plastic film 5 having a group of ventilation holes 7 opened on the surface. The upper and lower cover sheets 2 and the liquid retaining liquid 1 are integrated at least at the inner periphery of the vent hole 7. A part of the liquid impregnated in the retentive liquid 1 oozes out from the vent hole 7 and adheres to the skin surface in a use state where the one cover sheet 2 is adhered to the skin surface. The covering sheet 2 and the liquid retaining liquid 1 can be integrated by adhesion or heat welding.

被覆シート２は、ベースフィルム５の表面に金属蒸着層６を形成した蒸着フィルムで形成し、金属蒸着層６が外面に露出する状態で、上下の被覆シート２を保液体１と一体化する。金属蒸着層６は、少なくともベースフィルム５の片面に形成してあればよいが、ベースフィルム５の両面に形成してあってもよい。 The covering sheet 2 is formed of a vapor deposition film in which the metal vapor deposition layer 6 is formed on the surface of the base film 5, and the upper and lower coating sheets 2 are integrated with the liquid retaining liquid 1 in a state where the metal vapor deposition layer 6 is exposed on the outer surface. The metal vapor deposition layer 6 may be formed on at least one surface of the base film 5, but may be formed on both surfaces of the base film 5.

加熱した一群の針体１１を被覆シート２に突き刺して通気穴７を形成する。このとき、通気穴７の内面周縁に形成されるベースフィルム５の溶融塊１２を保液体１の構成材に結着させて、被覆シート２と吸液性マット４とを一体化する。 A group of heated needle bodies 11 are pierced into the covering sheet 2 to form the vent holes 7. At this time, the molten mass 12 of the base film 5 formed on the inner peripheral edge of the vent hole 7 is bound to the constituent material of the liquid retaining liquid 1, and the covering sheet 2 and the liquid absorbent mat 4 are integrated.

保液体１は、熱溶着可能なシート状の吸液性芯材３と、吸液性芯材３の上下面を覆う吸液性マット４とで構成する。吸液性芯材３の周縁を、上下の被覆シート２の周縁の間に熱溶着して、保液体１を被覆シート２の間に封入する。吸液性マット４としては、吸液性繊維、吸液性を備えた柔軟な発泡樹脂、吸液性を備えた発泡ゴムを素材にして、これらの素材から選択される少なくともひとつの素材で形成することができる。吸液性繊維としては、綿、レーヨン、パルプなどがある。また、先の吸液性繊維に、ポリエチレン、ポリプロピレン、ポリエステル、ポリアミドなどの合成繊維を混合して吸液性繊維とすることができる。また、吸液性を備えた発泡樹脂としては、発泡セルロース、発泡ポリウレタンなどを適用できる。吸液性マット４は、上記の各素材を単独で、あるいは複数の素材を混合した状態で構成することができる。 The liquid retaining liquid 1 is composed of a sheet-like liquid-absorbent core material 3 that can be thermally welded and a liquid-absorbent mat 4 that covers the upper and lower surfaces of the liquid-absorbent core material 3. The peripheral edge of the liquid-absorbent core material 3 is thermally welded between the peripheral edges of the upper and lower cover sheets 2, and the liquid retaining liquid 1 is sealed between the cover sheets 2. The liquid absorbent mat 4 is made of a liquid absorbent fiber, a flexible foam resin having liquid absorbency, and a foam rubber having liquid absorbency, and is formed of at least one material selected from these materials. can do. Examples of liquid absorbent fibers include cotton, rayon, and pulp. Moreover, synthetic fibers, such as polyethylene, polypropylene, polyester, and polyamide, can be mixed with the liquid absorbent fibers to form liquid absorbent fibers. Further, as the foamed resin having liquid absorbency, foamed cellulose, foamed polyurethane and the like can be applied. The liquid-absorbent mat 4 can be configured with each of the above materials alone or in a state in which a plurality of materials are mixed.

高吸水性高分子体からなる吸液体２８を吸液性マット４の内部に担持する。 A liquid absorbent 28 made of a highly water-absorbing polymer is carried inside the liquid absorbent mat 4.

本発明においては、水等の液体を含浸する保液体１と、表面に通気穴７の一群が開口してある被覆シート２とで放熱パッドを構成するので、ポリアクリル酸等の冷却用組成物を保液体とする従来の冷却シートに比べて、放熱パッドの製造コストを低減できる。使用時には、保液体１に含浸させた液体の一部が通気穴７から滲み出して肌面に付着するので、放熱パッドを肌面に対して確りと付着させることができる。さらに、保液体１の外面を、通気穴７の一群が開口された被覆シート２で覆うので、保液体１に含浸した水などの蒸散を効果的に行なうことができ、冷却用組成物を保液体とする従来の冷却シートに比べて、肌面の熱をさらに効果的に放散できる。 In the present invention, since the heat-retaining pad is constituted by the retentive liquid 1 impregnated with a liquid such as water and the cover sheet 2 having a group of vent holes 7 on the surface, a cooling composition such as polyacrylic acid is used. Compared to a conventional cooling sheet that uses liquid as a liquid retention, the manufacturing cost of the heat dissipation pad can be reduced. At the time of use, a part of the liquid impregnated in the retentive liquid 1 oozes out from the vent hole 7 and adheres to the skin surface, so that the heat radiating pad can be securely adhered to the skin surface. Furthermore, since the outer surface of the liquid retaining liquid 1 is covered with the covering sheet 2 in which a group of the vent holes 7 are opened, the transpiration of water impregnated in the liquid retaining liquid 1 can be effectively performed, and the cooling composition is retained. Compared to a conventional cooling sheet that is a liquid, it is possible to dissipate heat on the skin surface more effectively.

蒸着フィルムで被覆シート２を形成し、その金属蒸着層６を外面に露出させると、金属蒸着層６で周囲の熱を反射し遮断できるので、使用時における放熱パッドの温度が、周囲の外気温によって上昇するのを抑止できる。また、肌面と接触する金属蒸着層６は、肌面の熱を吸液性マット４へ効果的に伝導できるので、水不透過性フィルム、繊維シート、不織布を積層した従来の吸熱シートに比べて、肌面の熱の放散をさらに効果的に行なうことができる。 When the cover sheet 2 is formed with a vapor deposition film and the metal vapor deposition layer 6 is exposed to the outer surface, the metal vapor deposition layer 6 can reflect and block the surrounding heat. Can be prevented from rising. Moreover, since the metal vapor deposition layer 6 in contact with the skin surface can effectively conduct the heat of the skin surface to the liquid-absorbent mat 4, compared with a conventional heat-absorbing sheet in which a water-impermeable film, a fiber sheet, and a nonwoven fabric are laminated. Thus, the heat of the skin surface can be dissipated more effectively.

加熱した一群の針体１１を被覆シート２に突き刺して通気穴７を形成すると、通気穴７を形成するのと同時に、通気穴７の内面周縁に形成される溶融塊１２を保液体１の構成材に結着させて、吸液性マット４を被覆シート２に相対移動不能に一体化できる。したがって、通気穴７の形成と、吸液性マット４と被覆シート２の固定を個別に行なう場合に比べて、放熱パッドの製造に要する手間と時間を削減して、放熱パッドをさらに低コストで提供できる。また、被覆シート２と吸液性マット４とが相対移動不能に一体化されるので、吸液性マット４が１個所にかたまって塊状になるのを防止でき、これにより放熱パッドを常に平坦なマット状に保形して、放熱パッドの使い勝手を向上できる。さらに、異物が保液体１に付着し、あるいは保液体１が肌面に直接接触するのを被覆シート２で防止でき、したがって放熱パッドを衛生的な状態で繰り返し使用できる。 When the group of heated needle bodies 11 are pierced into the covering sheet 2 to form the air holes 7, the molten mass 12 formed on the inner peripheral edge of the air holes 7 is formed simultaneously with the formation of the air holes 7. By binding to the material, the liquid-absorbent mat 4 can be integrated with the covering sheet 2 so as not to be relatively movable. Therefore, compared with the case where the vent hole 7 is formed and the liquid-absorbent mat 4 and the cover sheet 2 are separately fixed, the labor and time required for manufacturing the heat-radiating pad can be reduced, and the heat-radiating pad can be further reduced in cost. Can be provided. In addition, since the covering sheet 2 and the liquid absorbent mat 4 are integrated so as not to move relative to each other, the liquid absorbent mat 4 can be prevented from clumping into one place to form a lump. The shape of the mat can be maintained to improve the usability of the heat dissipation pad. Further, the covering sheet 2 can prevent foreign matters from adhering to the retentive liquid 1 or the retentive liquid 1 from coming into direct contact with the skin surface, and thus the heat dissipating pad can be used repeatedly in a sanitary state.

熱溶着可能なシート状の吸液性芯材３と、吸液性芯材３の上下面を覆う吸液性マット４とで保液体１を構成すると、吸液性芯材３の保形力によって、保液体１の外形を保持できる。さらに、吸液性芯材３の周縁を、上下の被覆シート２の周縁の間に熱溶着して保液体１を被覆シート２の間に封入することにより保形力を向上して、放熱パッドを常に平坦な状態に保持できる。したがって、吸液性芯材３および吸液性マット４に水などを含浸させた状態において、放熱パッドが中折れ状に折れ曲がるのを防いで、放熱パッドの取り扱いを容易化できる。また、吸液性芯材３が上下の被覆シート２の周縁の間に熱溶着されるので、上下の吸液性マット４を被覆シート２と吸液性芯材３との間に均等に封入して、放熱パッドの表面と裏面との蒸散機能を均等化できるので、使用時に表面と裏面を使い分ける煩わしさを解消できる。 When the liquid-retaining liquid 1 is composed of a heat-weldable sheet-like liquid-absorbent core material 3 and a liquid-absorbent mat 4 covering the upper and lower surfaces of the liquid-absorbent core material 3, the shape-retaining force of the liquid-absorbent core material 3 Thus, the outer shape of the liquid retaining liquid 1 can be retained. Furthermore, the shape retention is improved by heat-sealing the periphery of the liquid-absorbent core material 3 between the periphery of the upper and lower cover sheets 2 to enclose the liquid retaining liquid 1 between the cover sheets 2, thereby improving the shape retention force. Can always be kept flat. Therefore, in a state where the liquid absorbent core material 3 and the liquid absorbent mat 4 are impregnated with water or the like, the heat radiation pad can be prevented from being bent in a middle shape, and the heat radiation pad can be handled easily. Further, since the liquid absorbent core material 3 is thermally welded between the peripheral edges of the upper and lower cover sheets 2, the upper and lower liquid absorbent mats 4 are evenly sealed between the cover sheet 2 and the liquid absorbent core material 3. And since the transpiration | evaporation function of the surface and the back surface of a thermal radiation pad can be equalized, the troublesomeness which uses a surface and a back surface separately can be eliminated at the time of use.

吸液性マット４の内部に高吸水性高分子体からなる吸液体２８を担持させると、吸液体２８が含浸する水または液体の分だけ、放熱パッドの内部に保持される水または液体の総量を増加できる。したがって、放熱パッドによる肌面の熱の放散をより長い時間にわたって行なうことができる。 When the liquid-absorbing mat 4 is loaded with the liquid-absorbing liquid 28 made of a highly water-absorbing polymer, the total amount of water or liquid retained in the heat-radiating pad by the amount of water or liquid impregnated in the liquid-absorbing liquid 28. Can be increased. Therefore, the heat of the skin surface can be dissipated over a longer time by the heat dissipating pad.

本発明に係る放熱パッドの平面図である。It is a top view of the thermal radiation pad concerning the present invention. 図１におけるＡ−Ａ線断面図である。It is the sectional view on the AA line in FIG. 放熱パッドの製造法の概略を示す説明図である。It is explanatory drawing which shows the outline of the manufacturing method of a thermal radiation pad. 通気穴の形成手法を示す断面図である。It is sectional drawing which shows the formation method of a vent hole. 本発明に係る放熱パッドの別の実施例を示す平面図である。It is a top view which shows another Example of the thermal radiation pad which concerns on this invention. 図５に係る放熱パッドの製造法の概略を示す説明図である。It is explanatory drawing which shows the outline of the manufacturing method of the thermal radiation pad which concerns on FIG. 試験１の結果を示す図表である。6 is a chart showing the results of Test 1. 試験２−１の結果を示す図表である。It is a chart which shows the result of test 2-1. 試験２−２の結果を示す図表である。It is a chart which shows the result of test 2-2. 試験３−１の結果を示す図表である。It is a chart which shows the result of test 3-1. 試験３−２の結果を示す図表である。It is a chart which shows the result of test 3-2. 本発明に係る放熱パッドの別の実施例を示す断面図である。It is sectional drawing which shows another Example of the thermal radiation pad which concerns on this invention.

（実施例）図１ないし図４は本発明に係る放熱パッドの実施例を示す。図２において放熱パッドは、水などの液体を含浸する保液体１と、保液体１の上下面を覆う被覆シート２・２とを主な構成材にして構成してあり、全体が横長四角形状に形成してある。 (Example) FIG. 1 thru | or FIG. 4 shows the Example of the thermal radiation pad which concerns on this invention. In FIG. 2, the heat dissipating pad is composed mainly of a retentive liquid 1 impregnated with a liquid such as water, and covering sheets 2 and 2 covering the upper and lower surfaces of the retentive liquid 1, and the whole is a horizontally long rectangular shape. Is formed.

保液体１は、熱溶着可能なシート状の吸液性芯材３と、吸液性芯材３の上下面を覆う吸液性マット４・４とで構成する。吸液性芯材３としては不織布、および織布のいずれであってもよいが、熱溶着が可能な合成繊維を素材とする不織布が材料コストが少なくて済む点で好ましい。吸液性芯材３は、放熱パッドのパッド形状を保持するために設けられており、適度の柔軟さを発揮しながら、水を含んだ放熱パッドが中折れ状に折れ曲がるのを規制できる厚みの不織布を使用する。この実施例では、秤量が１５〜３０ｇ／ｍ² の不織布で吸液性芯材３を形成した。 The liquid retaining liquid 1 is composed of a sheet-like liquid-absorbent core material 3 that can be thermally welded, and liquid-absorbent mats 4 and 4 that cover the upper and lower surfaces of the liquid-absorbent core material 3. The liquid-absorbent core material 3 may be either a non-woven fabric or a woven fabric, but a non-woven fabric made of synthetic fibers capable of heat welding is preferable in that the material cost can be reduced. The absorbent core 3 is provided to maintain the pad shape of the heat dissipating pad, and has a thickness capable of restricting the heat dissipating pad containing water from being bent in a middle shape while exhibiting appropriate flexibility. Use non-woven fabric. In this example, the liquid-absorbent core material 3 was formed of a nonwoven fabric having a basis weight of 15 to 30 g / m ² .

吸液性マット４は、吸液性繊維塊、吸液性を備えた柔軟な発泡樹脂、あるいは発泡ゴムを素材にして、これらの素材から選択される少なくともひとつの素材を含んで構成する。吸液性繊維塊としては、綿、セルロースなどの吸液性に優れた繊維と、熱溶着性、疎水性、保形性を備えた合成繊維、例えばポリエチレン繊維、ポリプロピレン繊維、ポリエステル繊維等を素材にして、繊維素材を交絡してマット状に形成する。この実施例では、綿繊維を絡ませてマット状にした綿マットで吸液性マット４を形成しており、綿マットの秤量は１３５ｇ／ｍ² とし、その自由状態時の厚みは４ｍｍとした。 The liquid absorbent mat 4 is made of a liquid absorbent fiber lump, a flexible foamed resin having liquid absorbency, or foamed rubber, and includes at least one material selected from these materials. The liquid-absorbing fiber mass is made of fibers with excellent liquid-absorbing properties, such as cotton and cellulose, and synthetic fibers with heat-welding, hydrophobicity, and shape-retaining properties such as polyethylene fibers, polypropylene fibers, and polyester fibers. Then, the fiber material is entangled and formed into a mat shape. In this embodiment, the liquid absorbent mat 4 is formed of a cotton mat entangled with cotton fibers, the weigh of the cotton mat is 135 g / m ^2, and the thickness in the free state is 4 mm.

被覆シート２は、ベースフィルム（プラスチックフィルム）５の片面に金属蒸着層６を形成した蒸着フィルムで形成されており、被覆シート２の全面にわたって通気穴７の一群が格子模様状に開口してある。ベースフィルム５としては、熱溶着が可能なポリエチレン、ポリプロピレン、ポリエステル、ポリアミドなどを素材とするフィルムがあるが、柔軟性と保形性を備えたポリエステルフィルム、あるいはポリエステルフィルムにポリエチレンをコーティングし、あるいはポリエチレンフィルムをラミネートした２層構造のフィルムが好ましい。金属蒸着層６の蒸着材としては、アルミニウム、銀、銅などがあるが、材料コストが少なくて済む点でアルミニウムが好ましい。 The covering sheet 2 is formed of a vapor deposition film in which a metal vapor deposition layer 6 is formed on one surface of a base film (plastic film) 5, and a group of ventilation holes 7 are opened in a lattice pattern over the entire surface of the covering sheet 2. . As the base film 5, there is a film made of polyethylene, polypropylene, polyester, polyamide or the like that can be heat-welded, but a polyester film having flexibility and shape retention, or a polyester film coated with polyethylene, or A two-layer film laminated with a polyethylene film is preferred. Examples of the vapor deposition material for the metal vapor deposition layer 6 include aluminum, silver, copper, and the like, but aluminum is preferable because the material cost can be reduced.

被覆シート２の全厚寸法は、０．００８〜０．１ｍｍの範囲にあればよく、この実施例では被覆シート２の全厚寸法を０．０２ｍｍとし、金属蒸着層６の厚みは０．０５μｍとした。被覆シート２の全厚寸法が０．００８ｍｍ未満であると被覆シート２が破断しやすく、全厚寸法が０．１ｍｍを越えると、後述する通気穴７の形成過程において、被覆シート２を吸液性マット４の繊維に結着するのが困難となり、さらに、しなりと柔らかさが低下し肌への密着性が悪くなる。被覆シート２は、その金属蒸着層６が外面に位置する状態で保液体１の上下面を覆っている。 The total thickness dimension of the covering sheet 2 only needs to be in the range of 0.008 to 0.1 mm. In this embodiment, the total thickness dimension of the covering sheet 2 is 0.02 mm, and the thickness of the metal deposition layer 6 is 0.05 μm. It was. When the total thickness dimension of the covering sheet 2 is less than 0.008 mm, the covering sheet 2 is easily broken, and when the total thickness dimension exceeds 0.1 mm, the covering sheet 2 is absorbed in the formation process of the air holes 7 described later. It becomes difficult to bind to the fibers of the adhesive mat 4, and the softness is lowered and the adhesion to the skin is deteriorated. The covering sheet 2 covers the upper and lower surfaces of the liquid retaining liquid 1 with the metal vapor deposition layer 6 positioned on the outer surface.

図４に示すように通気穴７は、加熱した一群の針体１１を被覆シート２・２に突き刺して格子模様状に形成する。このとき、針体１１の熱によってベースフィルム５が溶融して、通気穴７の内縁側へ流下し、通気穴７の内面周縁に溶融塊１２が形成される（図２参照）。溶融塊１２の一部は、ベースフィルム５の内面に接触する吸液性マット４の繊維に染み込んで固化する。これにより、ベースフィルム５と吸液性マット４の繊維とを結着して、被覆シート２・２と吸液性マット４・４とを相対移動不能に一体化することができる。個々の通気穴７の直径寸法は１ｍｍであり、通気穴７の縦横の隣接ピッチは１．５ｍｍとした。このように、通気穴７の一群を被覆シート２の表面に高密度で形成しておくと、使用状態において、保液体１に含浸させた液体の一部を通気穴７から滲み出させて肌面に付着させることができ、したがって放熱パッドを肌面に対して確りと付着させることができる。また、外気と吸液性マット４との接触機会や、肌面の熱気と吸液性マット４との接触機会を、一群の通気穴７を介して向上できる利点もある。 As shown in FIG. 4, the vent holes 7 are formed in a lattice pattern by piercing the cover sheets 2 and 2 with a group of heated needle bodies 11. At this time, the base film 5 is melted by the heat of the needle body 11 and flows down to the inner edge side of the vent hole 7, and a molten mass 12 is formed on the inner periphery of the vent hole 7 (see FIG. 2). A part of the molten mass 12 soaks into the fibers of the liquid-absorbent mat 4 that contacts the inner surface of the base film 5 and solidifies. Thereby, the base film 5 and the fiber of the liquid-absorbent mat 4 can be bound, and the covering sheets 2 and 2 and the liquid-absorbent mat 4 and 4 can be integrated so as not to move relative to each other. The diameter dimension of each vent hole 7 was 1 mm, and the vertical and horizontal adjacent pitches of the vent holes 7 were 1.5 mm. In this way, when a group of the vent holes 7 is formed on the surface of the covering sheet 2 at a high density, a part of the liquid impregnated in the liquid retaining liquid 1 oozes out from the vent holes 7 in the use state. Therefore, the heat radiation pad can be firmly attached to the skin surface. In addition, there is an advantage that the opportunity of contact between the outside air and the liquid-absorbent mat 4 and the opportunity of contact between hot air on the skin and the liquid-absorbent mat 4 can be improved through the group of ventilation holes 7.

次ぎに、放熱パッドの製造法の一例を図３に基づき説明する。図３において、符号１４は吸液性芯材３の原反ロール、符号１５・１６はそれぞれ吸液性マット４の原反ロール、符号１７・１８は被覆シート２の原反ロールである。各原反ロール１４〜１８からウェブ材を繰り出し供給しながら、積層されたウェブ材を上下一対の押えローラー１９・２０・２１・２２で重合し密着させることにより、上下の被覆シート２の間に上下の吸液性マット４・４と吸液性芯材３が積層された１次ブランク２４を形成できる。次ぎに、１次ブランク２５の上面および下面のそれぞれに加熱した一群の針体１１を突き刺して、被覆シート２・２に一群の通気穴７を形成する。得られた個々の２次ブランク２５をウェブ幅方向に切断し、あるいは型抜きして放熱パッドを完成する。得られた放熱パッドは、個包装した複数個をひとまとめにして包装し、あるいは、個包装しないままで複数個の放熱パッドをひとまとめに包装した状態で販売に供される。 Next, an example of a method for manufacturing a heat radiating pad will be described with reference to FIG. In FIG. 3, reference numeral 14 denotes an original fabric roll of the liquid absorbent core material 3, reference numerals 15 and 16 denote original fabric rolls of the liquid absorbent mat 4, and reference numerals 17 and 18 denote original fabric rolls of the covering sheet 2. While feeding and supplying the web material from each of the original fabric rolls 14 to 18, the laminated web material is polymerized and closely adhered by a pair of upper and lower press rollers 19, 20, 21, and 22, so A primary blank 24 in which the upper and lower liquid-absorbing mats 4 and 4 and the liquid-absorbent core material 3 are laminated can be formed. Next, a group of heated needle bodies 11 are pierced on the upper and lower surfaces of the primary blank 25 to form a group of ventilation holes 7 in the covering sheets 2 and 2. The obtained secondary blanks 25 are cut in the web width direction or die-cut to complete the heat dissipation pad. The obtained heat dissipating pads are packaged in a plurality of individually wrapped packages, or are sold in a state where a plurality of heat dissipating pads are packaged together without being individually wrapped.

放熱パッドを使用するときは、まずパッド全体を水に浸漬して保液体１に水を含浸させ、水が垂れ落ちない程度に軽く絞っておく。放熱パッドは、額、顔、首回り、胸部、上腕、脚など、人体の肌面の任意の位置に載置して、肌面の熱の放散を行なう。例えば、放熱パッドを額に載置した状態では、肌面の熱が付着側の金属蒸着層６とベースフィルム５を介して吸液性マット４へ効果的に伝えられ、肌面から伝導された熱が吸液性マット４に取り込まれる。また、肌面に接触していない蒸散側の被覆シート２では、外気が通気穴７を介して吸液性マット４および吸液性マット４に含浸された水と接触して、蒸散作用を発揮する。蒸散作用による熱の放散によって吸液性マット４は徐々に冷やされ、保液体１の全体の温度を下げて、放熱パッドが載置された肌面の熱を放散することができる。蒸散側の被覆シート２は、周囲の熱を反射して遮断することにも役立っており、これにより周囲の外気温による放熱パッドの温度上昇を抑止することができる。 When using the heat dissipating pad, first, the entire pad is immersed in water and impregnated with water in the retentive liquid 1 and squeezed lightly to such an extent that the water does not droop. The heat dissipating pad is placed at any position on the skin surface of the human body such as the forehead, the face, the neck, the chest, the upper arm, and the leg to dissipate heat on the skin surface. For example, in the state where the heat dissipating pad is placed on the forehead, the heat on the skin surface is effectively transmitted to the liquid absorbent mat 4 through the metal vapor deposition layer 6 and the base film 5 on the adhesion side, and is conducted from the skin surface. Heat is taken into the absorbent mat 4. Further, in the cover sheet 2 on the transpiration side that is not in contact with the skin surface, the outside air comes into contact with the liquid absorbent mat 4 and the water impregnated in the liquid absorbent mat 4 through the vent hole 7 and exhibits the transpiration action. To do. The heat-absorbing mat 4 is gradually cooled by the heat dissipation by the transpiration action, and the overall temperature of the liquid retaining liquid 1 can be lowered to dissipate the heat of the skin surface on which the heat radiation pad is placed. The coating sheet 2 on the transpiration side also serves to reflect and block ambient heat, thereby suppressing the temperature rise of the heat dissipation pad due to the ambient outside temperature.

標準的な使用時間が経過したら水の蒸散作用が低下するので、放熱パッドを肌面から取り外し、被覆シート２の表面を流水で洗浄しながら、再び保液体１に水を含浸させたのち、軽く絞ることにより再使用できる。なお、水は常温のままでもよいが、冷水を保液体１に含浸させると、冷水の冷熱によっても肌面を冷却できる。また、水以外の液体、例えばアルコール水溶液を保液体１に含浸させて、含浸した液体の蒸散を促進することができる。あるいは、メントールが添加された水またはアルコール水溶液を保液体１に含浸させて、肌面に対して冷涼感を付与することができる。必要があれば、吸液性マット４の一方に水を含浸させ、他方の吸液性マット４にアルコール水溶液を含浸させた状態で使用することができる。 Since the transpiration of water decreases after the standard usage time has passed, remove the heat-dissipating pad from the skin surface, wash the surface of the covering sheet 2 with running water, and again impregnate the retentive liquid 1 with water. Can be reused by squeezing. In addition, although water may be normal temperature, if cold water is impregnated into the retentive liquid 1, the skin surface can be cooled also by the cold heat of cold water. In addition, a liquid other than water, for example, an alcohol aqueous solution can be impregnated in the retentive liquid 1 to promote the transpiration of the impregnated liquid. Alternatively, the liquid 1 can be impregnated with water to which menthol is added or an aqueous alcohol solution to give a cool feeling to the skin surface. If necessary, the liquid absorbent mat 4 can be used in a state where one of the liquid absorbent mats 4 is impregnated with water and the other liquid absorbent mat 4 is impregnated with an aqueous alcohol solution.

放熱パッドは、保液体１に水、メントール等の冷感剤が添加された水、あるいはアルコール水溶液などを予め含浸させた状態で包装用の袋にパックし、あるいは複数個の保液体１を包装用の袋にパックした状態で販売に供することができる。その場合には、保液体１に水、あるいは水溶液を含浸させる必要がないので、パックを開封するだけでどこでも放熱パッドを手軽に使用できる。 The heat dissipating pad is packed in a packaging bag in a state in which the liquid retaining liquid 1 is pre-impregnated with water, a water added with a cooling agent such as menthol, or an aqueous alcohol solution, or a plurality of liquid retaining liquids 1 are packaged. It can be offered for sale in a state packed in a bag. In that case, since it is not necessary to impregnate the retentive liquid 1 with water or an aqueous solution, the heat dissipating pad can be easily used anywhere just by opening the pack.

図５および図６は放熱パッドの別の実施例を示す。そこでは、それぞれ横長四角形状に形成した吸液性芯材３の周縁と、ベースフィルム５の周縁とを熱溶着して、保液体１と被覆シート２・２とを一体化する点が、先の実施例と異なる。図５において、熱溶着部分を符号８で示している。このこのように、吸液性芯材３の周縁と、被覆シート２の周縁とを熱溶着することにより、上下の被覆シート２・２と吸液性芯材３との間のそれぞれに吸液性マット４を封入することができる。 5 and 6 show another embodiment of the heat dissipating pad. There, the point that the liquid retaining core 1 and the covering sheets 2 and 2 are integrated by heat-welding the peripheral edge of the liquid-absorbent core 3 formed in the shape of a horizontally long rectangle and the peripheral edge of the base film 5 is the first point. This is different from the embodiment. In FIG. 5, the heat welded portion is indicated by reference numeral 8. In this way, by absorbing the peripheral edge of the liquid-absorbent core 3 and the peripheral edge of the cover sheet 2, liquid absorption is performed between the upper and lower cover sheets 2 and 2 and the liquid-absorbent core 3. The mat 4 can be encapsulated.

製造の過程では、１次ブランク２４を熱溶着することにより、周縁が熱溶着部分８で囲まれた２次ブランク２５を形成したのち、２次ブランク２５の上面および下面のそれぞれに加熱した一群の針体１１を突き刺して、被覆シート２・２に一群の通気穴７を形成する。得られた個々の２次ブランク２５をウェブ幅方向に切断し、あるいは型抜きして、図５に示すように放熱パッドを完成する。他は先の実施例と同じであるので、同じ部材に同じ符号を付してその説明を省略する。 In the course of manufacturing, the primary blank 24 is thermally welded to form a secondary blank 25 whose peripheral edge is surrounded by the heat-welded portion 8, and then a group of groups heated to the upper and lower surfaces of the secondary blank 25. The needle body 11 is pierced to form a group of ventilation holes 7 in the covering sheets 2 and 2. The obtained secondary blanks 25 are cut in the web width direction or die-cut to complete a heat dissipation pad as shown in FIG. Since others are the same as the previous embodiment, the same reference numerals are assigned to the same members, and descriptions thereof are omitted.

（試験１）上記のように構成した放熱パッドの蒸散作用が、パッド構造の違いによってどのように変化するかを確認するために、パッド構造が異なる保液体に含浸させた水の蒸発量を測定した。試料１は被覆シート２で被覆されていない保液体１からなる。試料２は、保液体１の上下両面が、通気穴７を備えた被覆シート２で被覆されている放熱パッドからなる。試料３は、保液体１の上面のみが通気穴７を備えた被覆シート２で被覆され、保液体１の下面は通気穴７を備えていない被覆シートで被覆してある放熱パッドからなる。蒸発量の測定は、周囲温度が４０℃、相対湿度が７５％に調整された環境下で、重量計に試料１〜３を個別に載置して、所定の時間（６０分）が経過するごとに各試料の重量を精密に測定して水の蒸発量とした。測定前の各試料には、保液体１の重量の７００％の水を含浸させた。 (Test 1) In order to confirm how the transpiration of the heat dissipating pad configured as described above changes depending on the pad structure, the amount of evaporation of water impregnated in different liquid retention liquids is measured. did. The sample 1 is composed of the liquid retaining liquid 1 that is not covered with the covering sheet 2. The sample 2 is composed of a heat dissipating pad in which the upper and lower surfaces of the liquid retaining liquid 1 are covered with the covering sheet 2 provided with the vent holes 7. In the sample 3, only the upper surface of the liquid retaining liquid 1 is covered with the covering sheet 2 provided with the vent holes 7, and the lower surface of the liquid retaining liquid 1 is formed of a heat radiation pad covered with a covering sheet that does not include the air holes 7. The evaporation amount is measured by placing samples 1 to 3 individually on a weight scale in an environment where the ambient temperature is adjusted to 40 ° C. and the relative humidity is adjusted to 75%, and a predetermined time (60 minutes) elapses. Each time, the weight of each sample was precisely measured to determine the amount of water evaporated. Each sample before the measurement was impregnated with 700% of the weight of the retentate 1.

測定結果を図７に示す。各試料とも測定開始から６０分までの水の蒸発量に大きな違いはないが、６０分を越えた後は、試料１の蒸発量と蒸発量の増加の度合とが、試料２、３の蒸発量と蒸発量の増加の度合より幾分大きくなっているのが判る。しかし、各測定時における水の蒸発量に大差はなく、概ね近似する直線に沿って蒸発量が変化している。また、試料２と試料３を比較すると、試料２の蒸発量が試料３の蒸発量より多いが、これは、被覆シート２の上下両面に通気穴７を開口したことによる、外気と吸液性マット４との接触機会の違いに起因するものであると思われる。 The measurement results are shown in FIG. Although there is no significant difference in the evaporation amount of water from the start of measurement to 60 minutes for each sample, after exceeding 60 minutes, the evaporation amount of Sample 1 and the degree of increase in evaporation amount are the evaporation of Samples 2 and 3. It can be seen that it is somewhat larger than the degree of increase in the amount and evaporation. However, there is no large difference in the amount of water evaporation at each measurement, and the amount of evaporation changes along a generally approximate straight line. Further, when sample 2 and sample 3 are compared, the amount of evaporation of sample 2 is larger than the amount of evaporation of sample 3. This is due to the fact that air holes 7 are opened on both the upper and lower surfaces of coating sheet 2 and the outside air and liquid absorbency. This seems to be due to the difference in contact opportunities with the mat 4.

（試験２）市販されている放熱シートと、本発明に係る放熱パッドとの蒸散作用を比較するために、各試料の水の蒸発量を測定した。試料１は、不織布の片面にゲル状の冷却用組成物を塗布した他社製品であり、試料２は、不織布の片面に試料１の冷却用組成物とは異なるゲル状の冷却用組成物を塗布した他社製品である。試料３は、試験１で説明した試料２と同じ放熱パッドであり、上下の被覆シート２・２のそれぞれに通気穴７が開口してある。蒸発量の測定は、試験条件を異ならせて２回行なった。 (Test 2) In order to compare the transpiration effect of a commercially available heat radiation sheet and the heat radiation pad according to the present invention, the amount of water evaporation of each sample was measured. Sample 1 is a product of another company in which a gel-like cooling composition is applied to one side of a nonwoven fabric, and Sample 2 is a gel-like cooling composition that is different from the cooling composition of Sample 1 on one side of a nonwoven fabric. It is a product of another company. Sample 3 is the same heat dissipating pad as Sample 2 described in Test 1, and vent holes 7 are opened in each of the upper and lower covering sheets 2 and 2. The amount of evaporation was measured twice with different test conditions.

（試験２−１）では、周囲温度が２４℃、相対湿度が７５％に調整された環境下で、重量計に試料１〜３を載置して、所定の時間（３０分）が経過するごとに各試料の重量を精密に測定して水の蒸発量とした。測定前の試料１・２には、冷却用組成物が含浸できる限界水量を含浸させた。また、試料３には、保液体１の重量の７００％の水を含浸させた。測定結果を図８に示す。 In (Test 2-1), the samples 1 to 3 are placed on the weighing scale in an environment where the ambient temperature is adjusted to 24 ° C. and the relative humidity is adjusted to 75%, and a predetermined time (30 minutes) elapses. Each time, the weight of each sample was precisely measured to determine the amount of water evaporated. Samples 1 and 2 before the measurement were impregnated with a limit amount of water that could be impregnated with the cooling composition. Sample 3 was impregnated with 700% of the weight of the retentate 1. The measurement results are shown in FIG.

（試験２−２）では、周囲温度が４０℃、相対湿度が７５％に調整された環境下で、重量計に試料１〜３を載置して、所定の時間（３０分）が経過するごとに各試料の重量を精密に測定して水の蒸発量とした。測定前の試料１・２には、冷却用組成物が含浸できる限界水量を含浸させた。また、試料３には、保液体１の重量の７００％の水を含浸させた。測定結果を図９に示す。 In (Test 2-2), the samples 1 to 3 are placed on the weighing scale in an environment where the ambient temperature is adjusted to 40 ° C. and the relative humidity is adjusted to 75%, and a predetermined time (30 minutes) elapses. Each time, the weight of each sample was precisely measured to determine the amount of water evaporated. Samples 1 and 2 before the measurement were impregnated with a limit amount of water that could be impregnated with the cooling composition. Sample 3 was impregnated with 700% of the weight of the retentate 1. The measurement results are shown in FIG.

試験２−１と試験２−２のいずれの場合にも、本発明に係る放熱パッドの蒸発量と蒸発量の増加の度合とが、試料１・２の市販品の放熱シートの蒸発量と蒸発量の増加の度合より大きいことを確認できた。とくに、図９に示すように、測定開始から４００分経過した時点以降は、本発明に係る放熱パッドの蒸発量は増加しておらず、保液体１に含浸させた水の殆どが、測定開始から４００分経過するまでに蒸発し終わったことが判る。換言すると、綿マットで形成した吸液性マット４を備えた本実施例の放熱パッドは、ゲル状の冷却用組成物を供えた市販の放熱シートに比べて、単位時間当たりの蒸発量が多く、吸液性マット４に含浸した水をより短い時間で効果的に蒸散できることを確認した。 In both cases of Test 2-1 and Test 2-2, the evaporation amount of the heat dissipating pad according to the present invention and the degree of increase in the evaporation amount are the evaporation amount and evaporation of the commercially available heat dissipating sheet of Samples 1 and 2. It was confirmed that the amount was larger than the degree of increase. In particular, as shown in FIG. 9, after 400 minutes from the start of measurement, the evaporation amount of the heat dissipating pad according to the present invention has not increased, and most of the water impregnated in the retentive liquid 1 has started measurement. It can be seen that the vaporization has been completed by 400 minutes. In other words, the heat dissipating pad of this example provided with the liquid-absorbing mat 4 formed of cotton mat has a larger amount of evaporation per unit time than a commercially available heat dissipating sheet provided with a gel-like cooling composition. It was confirmed that the water impregnated in the liquid absorbent mat 4 can be effectively evaporated in a shorter time.

（試験３）本発明に係る放熱パッドに含浸させる水の量の違いに伴なう蒸発量を確認するために、試験２と同様にして市販されている放熱シートと、本発明に係る放熱パッドとの蒸散作用を比較して、各試料の水の蒸発量を測定した。試料１〜試料３は、試験２における試料１〜試料３と同じである。試料４は、試験２における試料３と同じであるが、後述するように水の含浸量が試料３とは異なる。蒸発量の測定は、試験条件を異ならせて２回行なった。 (Test 3) In order to confirm the evaporation amount due to the difference in the amount of water impregnated in the heat dissipating pad according to the present invention, a heat dissipating sheet marketed in the same manner as in Test 2 and the heat dissipating pad according to the present invention The evaporation of water in each sample was measured. Sample 1 to Sample 3 are the same as Sample 1 to Sample 3 in Test 2. Sample 4 is the same as Sample 3 in Test 2, but the amount of water impregnation is different from that of Sample 3 as described later. The amount of evaporation was measured twice with different test conditions.

（試験３−１）では、周囲温度が２４℃、相対湿度が７５％に調整された環境下で、重量計に試料１〜４を載置して、所定の時間（３０分）が経過するごとに各試料の重量を精密に測定して水の蒸発量とした。測定前の試料１・２には、冷却用組成物が含浸できる限界水量を含浸させた。また、試料３には保液体１の重量の７００％の水を含浸させ、試料４には、保液体１の重量の６００％の水を含浸させた。測定結果を図１０に示す。 In (Test 3-1), the samples 1 to 4 are placed on the weighing scale in an environment where the ambient temperature is adjusted to 24 ° C. and the relative humidity is adjusted to 75%, and a predetermined time (30 minutes) elapses. Each time, the weight of each sample was precisely measured to determine the amount of water evaporated. Samples 1 and 2 before the measurement were impregnated with a limit amount of water that could be impregnated with the cooling composition. Sample 3 was impregnated with 700% of the weight of the retentive liquid 1, and Sample 4 was impregnated with 600% of the weight of the retentive liquid 1. The measurement results are shown in FIG.

（試験３−２）では、周囲温度が４０℃、相対湿度が７５％に調整された環境下で、重量計に試料１〜４を載置して、所定の時間（３０分）が経過するごとに各試料の重量を精密に測定して水の蒸発量とした。測定前の試料１・２には、冷却用組成物が含浸できる限界水量を含浸させた。また、試料３には保液体１の重量の７００％の水を含浸させ、試料４には保液体１の重量の６００％の水を含浸させた。測定結果を図１１に示す。 In (Test 3-2), the samples 1 to 4 are placed on the weighing scale in an environment where the ambient temperature is adjusted to 40 ° C. and the relative humidity is adjusted to 75%, and a predetermined time (30 minutes) elapses. Each time, the weight of each sample was precisely measured to determine the amount of water evaporated. Samples 1 and 2 before the measurement were impregnated with a limit amount of water that could be impregnated with the cooling composition. Sample 3 was impregnated with 700% of the weight of the retentive liquid 1, and sample 4 was impregnated with 600% of the weight of the retentive liquid 1. The measurement results are shown in FIG.

試験２と同様に、試験３−１と試験３−２のいずれの場合にも、本実施例に係る放熱パッドの蒸発量と蒸発量の増加の度合とが、試料１・２の市販品の放熱シートの蒸発量と蒸発量の増加の度合より大きいことを確認できた。また、室温を２４℃、相対湿度を７５％に調整した試験３−１では、試料３に比べて含水量が少ない試料４の放熱パッドは、試料３の放熱パッドに比べて蒸発量と蒸発量の増加の度合とが小さいことを確認した。さらに、室温を４０℃、相対湿度を７５％に調整した場合には、試料３と試料４の放熱パッドの蒸発量と蒸発量の増加の度合とが殆ど同じであることを確認した。 Similar to Test 2, in both cases of Test 3-1 and Test 3-2, the amount of evaporation of the heat dissipating pad according to this example and the degree of increase in the amount of evaporation were compared with those of the commercial products of Samples 1 and 2. It was confirmed that the amount of evaporation of the heat dissipation sheet was greater than the degree of increase in evaporation. Further, in Test 3-1, where the room temperature was adjusted to 24 ° C. and the relative humidity was adjusted to 75%, the heat radiation pad of Sample 4 having a lower water content than Sample 3 had an evaporation amount and an evaporation amount that were smaller than those of Sample 3. It was confirmed that the degree of increase was small. Furthermore, when the room temperature was adjusted to 40 ° C. and the relative humidity was adjusted to 75%, it was confirmed that the evaporation amount of the heat radiation pads of Sample 3 and Sample 4 and the degree of increase in evaporation amount were almost the same.

図１２は、本発明に係る放熱パッドの別の実施例を示す。そこでは、吸液性マット４に高吸水性高分子の細粒からなる吸液体２８を混入して、吸液体２８を混入していない放熱パッドに比べて吸液量を向上できるようにした。吸液体２８は、吸液性マット４を製造する過程で混入されて、吸液性マット４を構成する繊維で移動不能に担持してある。因みに、先の放熱パッドの吸液量を１００％とするとき、吸液体２８が混入してある放熱パッドの吸液量は２０００％に増強することができ、したがって、放熱パッドによる肌面の熱の放散をより長い時間にわたって行なうことができる。 FIG. 12 shows another embodiment of the heat dissipating pad according to the present invention. There, a liquid absorbing liquid 28 made of fine particles of a highly water absorbing polymer is mixed in the liquid absorbing mat 4 so that the liquid absorbing amount can be improved as compared with a heat radiating pad in which the liquid absorbing liquid 28 is not mixed. The liquid-absorbing liquid 28 is mixed in the process of manufacturing the liquid-absorbent mat 4 and is carried immovably by the fibers constituting the liquid-absorbent mat 4. Incidentally, when the liquid absorption amount of the previous heat dissipating pad is 100%, the liquid absorbing amount of the heat dissipating pad in which the liquid absorbing 28 is mixed can be increased to 2000%. Can be released over a longer period of time.

上記の実施例では、放熱パッドで肌面の熱を放散したが、薬品や香料などを吸液性マット４に含浸させて肌面に貼り付けることにより、放熱以外の用途に応用することができる。例えば、ウイキョウ油、ユーカリ油、テレピン油、ナツメグ油、メントールなどを吸液性マット４に含浸させて、被覆シート２を胸や喉などの肌面に貼り付け、体温によって先の各薬種を発散させて鼻や口から吸引することにより、くしゃみ、鼻詰まり、鼻水などの風邪の諸症状を緩和し抑止する医療補助用のパッドとして使用することができる。 In the above embodiment, the heat of the skin surface is dissipated by the heat dissipating pad, but it can be applied to uses other than heat dissipating by impregnating the absorbent mat 4 with chemicals, fragrances and the like and sticking to the skin surface. . For example, impregnating liquid-absorbing mat 4 with fennel oil, eucalyptus oil, turpentine oil, nutmeg oil, menthol, etc., affixing the covering sheet 2 to the skin surface of the chest, throat, etc. By sucking it from the nose and mouth, it can be used as a medical aid pad for alleviating and suppressing various cold symptoms such as sneezing, nasal congestion and runny nose.

また、吸液性マット４に香料と水を含浸させ、予め冷却したパッドを肌面に貼り付けることにより、肌面のほてりを押さえ、水とともに蒸散する香料のリラックス効果によって、寝苦しさを抑止する安眠促進用のパッドとして使用することができる。同様に、ローズマリー、レモングラス、ペパーミント、スイートオレンジなどの香料と水または溶媒を含浸させ、パッドを額や首回りに貼り付けることにより、体温で香料を発散させて、眠気を覚ますためのパッドとして使用することができる。 Also, impregnating the absorbent mat 4 with fragrance and water, and applying a pre-cooled pad to the skin surface, suppresses hot flashes on the skin surface and suppresses bedriddenness by the relaxing effect of the fragrance that evaporates with water. It can be used as a pad for promoting sleep. Similarly, impregnating fragrances such as rosemary, lemongrass, peppermint, sweet orange and water or solvent, and sticking the pads around the forehead and neck, radiates the fragrance at body temperature and wakes up sleepiness Can be used as

さらに、表皮や真皮の細胞を活性化する薬剤や、皮膚の落屑を促進する薬剤などを水または溶媒に溶融した溶液を吸液性マット４に含浸させたパッドを、目の周辺の肌面に貼り付けることにより、肌面の状態等を改善する化粧パッドとして使用することができる。 Furthermore, a pad in which the absorbent mat 4 is impregnated with a solution in which a drug that activates cells of the epidermis or dermis or a drug that promotes skin desquamation in water or a solvent is impregnated is applied to the skin surface around the eyes. By sticking, it can be used as a makeup pad for improving the condition of the skin surface.

上記以外に、被覆シート２は蒸着フィルムで形成することが好ましいが、必要があれば、金属蒸着層６を備えていないプラスチックフィルム５で形成することができる。蒸着フィルムで被覆シート２を形成する場合には、ベースフィルム５の内外両面に金属蒸着層６が形成してあってもよい。上下の被覆シート２のうち、いずれか一方の被覆シート２に限って、通気穴７の一群が形成してあってもよい。通気穴７は、先端が尖ったナイフの一群を被覆シート２に突き刺して、切り込み状に形成することができる。放熱パッドの全体厚みが小さい場合には、吸液性芯材３を省略して保液体１とすることができる。 In addition to the above, the covering sheet 2 is preferably formed of a vapor deposition film, but if necessary, it can be formed of a plastic film 5 that does not include the metal vapor deposition layer 6. In the case of forming the covering sheet 2 with a vapor deposition film, the metal vapor deposition layer 6 may be formed on both the inside and outside of the base film 5. A group of ventilation holes 7 may be formed only on one of the upper and lower covering sheets 2. The ventilation hole 7 can be formed in a cut shape by piercing the cover sheet 2 with a group of knives with sharp tips. When the entire thickness of the heat dissipating pad is small, the liquid-absorbing core material 3 can be omitted to make the liquid retaining liquid 1.

上下の被覆シート２は、吸液性マット４に対して接着して一体化することができる。また、周縁部以外の部分を格子模様状や、波模様状、あるいは水玉模様状などに溶着して、吸液性マット４を相対移動不能に一体化することができる。この場合には、吸液性マット４に熱溶着可能な合成繊維を混入しておくことにより、被覆シート２と吸液性マット４とを熱溶着でき、得られた放熱パッドはキルト生地状となり、先の溶着模様で区分された小さな区画に吸液性マット４が封入されることになる。 The upper and lower cover sheets 2 can be bonded and integrated with the liquid absorbent mat 4. Further, the liquid-absorbent mat 4 can be integrated so as not to be relatively movable by welding portions other than the peripheral portion to a lattice pattern, a wave pattern, or a polka dot pattern. In this case, the cover sheet 2 and the liquid-absorbent mat 4 can be heat-welded by mixing a synthetic fiber that can be heat-welded to the liquid-absorbent mat 4, and the obtained heat-dissipating pad has a quilted fabric shape. The liquid-absorbent mat 4 is sealed in a small section divided by the previous welding pattern.

１保液体
２被覆シート
３吸液性芯材
４吸液性マット
５ベースフィルム
６金属蒸着層
７通気穴
８熱溶着部分
１１針体
１２溶融塊 DESCRIPTION OF SYMBOLS 1 Liquid retention 2 Cover sheet 3 Liquid-absorbent core material 4 Liquid-absorbent mat 5 Base film 6 Metal vapor deposition layer 7 Vent hole 8 Heat welding part 11 Needle body 12 Molten lump

Claims

It is composed of a liquid retaining liquid (1) impregnated with a liquid such as water, and a covering sheet (2) covering the upper and lower surfaces of the liquid retaining liquid (1).
The covering sheet (2) is formed of a base film (5) having a group of vent holes (7) opened on the surface,
The upper and lower covering sheets (2) and the liquid retaining liquid (1) are integrated at least at the inner periphery of the vent hole (7),
In use state attached to one of the cover sheet (2) on the skin surface, a portion of the liquid impregnated in coercive liquid (1) is adapted to adhere to the skin surface oozing from the ventilation holes (7) ,
The covering sheet (2) is formed of a vapor deposition film in which a metal vapor deposition layer (6) is formed on the surface of the base film (5).
With the metal vapor deposition layer (6) exposed on the outer surface, the upper and lower covering sheets (2) are integrated with the liquid retaining liquid (1),
A group of heated needle bodies (11) are pierced into the covering sheet (2) to form a vent hole (7),
The molten mass (12) of the base film (5) formed on the inner peripheral edge of the vent hole (7) is bound to the constituent material of the liquid retention (1), and the covering sheet (2) and the liquid absorbent mat ( And 4) are integrated with each other .

The liquid-retaining liquid (1) is composed of a sheet-like liquid-absorbent core material (3) that can be thermally welded and a liquid-absorbent mat (4) that covers the upper and lower surfaces of the liquid-absorbent core material (3). ,
The peripheral edge of the liquid-absorbent core material (3) is thermally welded between the peripheral edges of the upper and lower cover sheets (2), and the liquid retaining liquid (1) is enclosed between the cover sheets (2). Heat dissipation pad as described in 1.

The heat-radiating pad according to claim 1 or 2, wherein a liquid-absorbing liquid (28) made of a highly water-absorbing polymer is carried inside the liquid-absorbing mat (4) .