TW201841593A - Heating element - Google Patents

Heating element Download PDF

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Publication number
TW201841593A
TW201841593A TW107111610A TW107111610A TW201841593A TW 201841593 A TW201841593 A TW 201841593A TW 107111610 A TW107111610 A TW 107111610A TW 107111610 A TW107111610 A TW 107111610A TW 201841593 A TW201841593 A TW 201841593A
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Taiwan
Prior art keywords
heating
sheet
water
cooling agent
heating element
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TW107111610A
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Chinese (zh)
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阪本一朗
相川翔平
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日商花王股份有限公司
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Publication of TW201841593A publication Critical patent/TW201841593A/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/02—Compresses or poultices for effecting heating or cooling
    • A61F7/03—Compresses or poultices for effecting heating or cooling thermophore, i.e. self-heating, e.g. using a chemical reaction

Abstract

A heating tool (50) is provided with heating elements (100) having: a heating part (10) which contains an oxidizable metal, a carbon component and water; and a housing body (20) which is partially air-permeable and houses the heating part (10). The heating tool (50) holds a cooling agent and satisfies the following conditions. (Conditions) In a 30 DEG C environment, the amount of the cooling agent that evaporates is 0.01-0.3 mg every 30 minutes following the start of heat generation by the heating element (100), and the ratio of the cumulative amount of vapor, as measured for the 10 minute period following the start of heat generation by the heating element (100), relative to the increase (DEG C) in maximum temperature at the surface of the heating tool (50) between the start of heat generation by the heating element (100) and 10 minutes thereafter, is 5 (mg/DEG C) or more.

Description

溫熱器具Warming appliances

本發明係關於一種溫熱器具。The invention relates to a heating appliance.

先前，利用如下蒸汽溫熱器具，其係含有鐵粉等被氧化性金屬、氯化鈉等電解質及水而構成，利用藉由被氧化性金屬之氧化反應所產生之氧化熱。又，隨著蒸汽溫熱器具之多樣化，已開發出含有清涼化劑之蒸汽溫熱器具。 於專利文獻1中，揭示有如下溫熱器具，其自提高清涼感強度與香氣強度之均衡之觀點，而含有被氧化性金屬及碳成分，且保持有清涼化劑及倍半萜烴。 [先前技術文獻] [專利文獻] [專利文獻1]日本專利特開2014-128467號公報Previously, a steam heating device was used, which was composed of an oxidized metal such as iron powder, an electrolyte such as sodium chloride, and water, and used oxidative heat generated by the oxidation reaction of the oxidized metal. In addition, with the diversification of steam heating appliances, steam heating appliances containing cooling agents have been developed. Patent Document 1 discloses a warming device which contains an oxidized metal and a carbon component from the viewpoint of improving the balance between the strength of cooling sensation and the strength of aroma, and maintains a cooling agent and a sesquiterpene hydrocarbon. [Prior Art Document] [Patent Document] [Patent Document 1] Japanese Patent Laid-Open No. 2014-128467

本發明係一種溫熱器具，其具備發熱體，該發熱體具有： 發熱部，其含有被氧化性金屬、碳成分及水；及 收容體，其一部分具有透氣性，且於內部收容上述發熱部；且 於上述溫熱器具保持有清涼化劑，並滿足以下條件： (條件) 於30℃之環境下， 上述發熱體開始發熱後每30分鐘之上述清涼化劑之揮散量為0.01 mg以上且0.3 mg以下，且 自上述發熱體開始發熱起至發熱開始後10分鐘為止所測定之累計蒸汽量(mg)與自上述發熱體開始發熱起算至發熱開始10分鐘後上述溫熱器具之表面最高溫度之上升溫度(℃)的比為5(mg/℃)以上。The invention relates to a warming device, which comprises a heating element, the heating element having: a heating element containing an oxidized metal, a carbon component, and water; and a container having a part of which is breathable and houses the heating element inside And keep the cooling agent in the warming device and meet the following conditions: (condition) in a 30 ° C environment, the volatility of the cooling agent every 30 minutes after the heating element starts to generate heat is 0.01 mg or more and 0.3 mg or less, and the cumulative amount of steam (mg) measured from the time when the heating element starts to heat up to 10 minutes after the start of heating, and the maximum surface temperature of the heating device from the time when the heating element starts to heat up to 10 minutes after the start of heating The ratio of the rising temperature (° C) is 5 (mg / ° C) or more.

專利文獻1中所記載之技術係著眼於清涼感強度與香氣強度之均衡之提高，能對眼睛賦予何種效果並非其具體所著眼之課題。本發明人等為滿足使用者之高要求，進行了銳意研究，其結果，發現了賦予舒適溫感並且減輕眼睛不適感之全新課題。 本發明人等對清涼化劑之揮散量、蒸汽之產生量、及發熱溫度之關係反覆進行了研究，得知使溫熱器具滿足特定條件係解決該課題之有效方法。 即，根據本發明，可提供一種能賦予舒適溫感並且減輕眼睛不適感之溫熱器具。 以下，利用圖式對本發明之實施形態進行說明。再者，於所有圖式中，對相同構成要素標註相同符號，並適當省略說明。 [溫熱器具] 首先，基於圖1及圖2對本實施形態之溫熱器具50之一例進行說明。圖1係本實施形態之溫熱器具之俯視圖，圖2係本實施形態之溫熱器具之分解立體圖。 本實施形態之溫熱器具50係所謂眼罩類型之溫熱器具，一對發熱體100分別覆蓋使用者之眼睛或眼瞼，用以對眼睛及其周圍賦予已被加熱至特定溫度之水蒸汽。 如圖1所示，溫熱器具50具有本體部51、及形成有供耳朵進入之孔54之掛耳部52。 本體部51形成為具有長度方向X及與長度方向X正交之寬度方向Y之橫長形狀。本體部51例如形成為大致長圓形。掛耳部52係成對使用，各掛耳部52分別安裝於本體部51之長度方向(X方向)之各端部。溫熱器具50係以將各掛耳部52勾掛於使用者之耳朵上而藉由本體部51覆蓋使用者之雙眼之方式佩戴。於該佩戴使用狀態下，自下述發熱部10產生之溫熱蒸汽即會被施加至使用者之眼睛。 圖2中示出了溫熱器具50使用前之狀態之分解立體圖。於該圖中，掛耳部52配置於溫熱器具50之最上部，使用時將中央部撕開並向左右打開，然後使之向外側翻轉而形成為圖1之狀態。 自提高時尚性及使用性之觀點，溫熱器具50進而具備袋體53。 袋體53具有：第一袋體片材55，其位於靠近使用者膚面之側；及第二袋體片材56，其位於遠離使用者膚面之側。此處，以夾入下述發熱部10之方式，設置該等第一袋體片材55及第二袋體片材56。 自防止內部透視之觀點，及維持保溫性、柔軟性、厚度等之觀點，第一袋體片材55及第二袋體片材56各自之基重較佳為20 g/m2 以上，更佳為40 g/m2 以上。又，第一袋體片材55及第二袋體片材56各自之基重較佳為200 g/m2 以下，更佳為110 g/m2 以下。 又，為使第一袋體片材55將所產生之水蒸汽應用於使用者，且使第二袋體片材56順利地對發熱部10供氧，較佳為兩者均具有透氣性。 具體而言，第一袋體片材55及第二袋體片材56之透氣度(JIS P8117，2009年修訂版，以下關於本說明書中之「透氣度」同樣如此)以高於第一收容體片材20a之透氣性為條件，較佳為6,000秒/100 mL以下，更佳為1,000秒/100 mL以下，進而更佳為500秒/100 mL以下，特佳為0秒/100 mL。藉由設定為此種透氣度，不僅能使被氧化性金屬21之氧化反應良好，而且能產生大量水蒸汽。即，藉由使溫熱器具50中之收容體20具有透氣性，袋體53亦具有透氣性，可形成能發生被氧化性金屬21之氧化反應並且能產生水蒸汽之溫熱器具50。 第一袋體片材55及第二袋體片材56形狀相同，均形成為大致長圓形。而且，第一袋體片材55及第二袋體片材56之外形構成本體部51之外形。使第一袋體片材55與第二袋體片材56兩者重合，藉由第一袋體片材55覆蓋收容體20之一面，藉由第二袋體片材56覆蓋收容體20之另一面，於自收容體20之周緣向外側延出之延出區域，使其等之周緣部之至少部分接合，且使X方向之中央部沿著Y方向而接合，由此形成袋體53。藉此，能於袋體53之內部形成用以收容收容體20之空間，而於該空間內收容被收容體20包圍之發熱部10。再者，要將第一袋體片材55與第二袋體片材56接合時，較佳為使之密閉接合，例如可使用熱熔接著劑。再者，收容體20可為固定於袋體53之狀態，亦可為不固定於袋體53之狀態。發熱部10亦可藉由接著劑或熱密封等(圖示省略)而固定於袋體53。 作為第一袋體片材55及第二袋體片材56，只要具有透氣性即可，片材之種類並不特別限定。例如，可使用以不織布為代表之纖維片材。例如，可使用選自針刺不織布、熱風不織布及紡黏不織布之1種或2種以上。 於袋體53之沿著X方向延伸之2條長邊之中央部的位置，形成有自該長邊沿著Y方向向內側凹入之大致V字形之凹槽部53A、53B。凹槽部53A、53B之凹入程度不同。於佩戴上溫熱器具50時，凹槽部53A位於使用者之眉間或其附近。於佩戴上溫熱器具50時，凹槽部53B位於使用者之鼻樑處。因此，通常而言，凹槽部53B之凹入程度較之凹槽部53A更大。 溫熱器具50之掛耳部52於使用前之狀態下，如圖2所示，配置於第一袋體片材55上。當要使用溫熱器具50時，使掛耳部52向外側翻轉，而形成為打開狀態。於使用前之狀態、即左右之掛耳部52位於第一袋體片材55上之狀態下，藉由左右之掛耳部52所形成之輪廓與第一袋體片材55之輪廓大致相同。再者，掛耳部52可使用與袋體53相同之材料。 [發熱體] 其次，基於圖3～5對溫熱器具50中所具備之發熱體100進行說明。圖3係模式性表示本實施形態中所使用之發熱體之俯視圖，圖4係圖3之A-A剖視圖，圖5係模式性表示本實施形態中所使用之發熱部之剖視圖。 如圖3、4所示，本實施形態之發熱體100具有：發熱部10，其含有被氧化性金屬、碳成分及水；及收容體20，其收容該發熱部10。 如圖5所示，發熱部10係由發熱層11與吸水性片材102積層而成，進而另行設置有基材層13(基材103)。 發熱部10係藉由被氧化性金屬21之氧化反應而發熱，從而賦予充分之溫熱效果，於依據JIS規格S4100所進行之測定中，例如可具有使溫熱器具50之發熱溫度達到38～70℃之性能。 如圖5所示，發熱層11含有被氧化性金屬21、碳成分22、吸水性聚合物23及水。 被氧化性金屬21係會產生氧化反應熱之金屬，例如可列舉選自由鐵、鋁、鋅、錳、鎂及鈣所組成之群之1種或2種以上之粉末或纖維。其中，自處理性、安全性、製造成本、保存性及穩定性之觀點，較佳為鐵粉。作為鐵粉，例如可列舉選自由還原鐵粉及霧化鐵粉所組成之群之1種或2種以上。 於被氧化性金屬21為粉末之情形時，自高效地進行氧化反應之觀點，其平均粒徑較佳為10 μm以上且200 μm以下，平均粒徑更佳為20 μm以上且150 μm以下。再者，被氧化性金屬21之粒徑係指粉體形態下之最大長度，其藉由過篩分級、動態光散射法、雷射繞射法等而測定。其中，於本實施形態，較佳為藉由雷射繞射法測定被氧化性金屬21之粒徑。 自相同觀點，被氧化性金屬21之平均粒徑較佳為10 μm以上，更佳為20 μm以上。又，被氧化性金屬21之平均粒徑較佳為200 μm以下，更佳為150 μm以下。 發熱層11中之被氧化性金屬21之含量以基重計，較佳為100 g/m2 以上且3000 g/m2 以下，更佳為200 g/m2 以上且1500 g/m2 以下。藉此，能使發熱部10之發熱溫度上升至所期望之溫度。 自相同觀點，發熱層11中之被氧化性金屬21之含量以基重計，較佳為100 g/m2 以上，更佳為200 g/m2 以上。又，較佳為3000 g/m2 以下，更佳為1500 g/m2 以下。 再者，發熱部10中之被氧化性金屬21之含量可藉由依據JIS P8128之灰分試驗、或熱重量測定器而求出。此外，可利用若施加外部磁場則發生磁化之性質並藉由振動試料型磁化測定試驗等而定量。其中，於本實施形態，較佳為藉由熱重量測定器求出被氧化性金屬21之含量。 碳成分22具有保水能、供氧能及觸媒能，例如可使用選自由活性炭、乙炔黑及石墨所組成之群之1種或2種以上。自濕潤時易於吸附氧之觀點、使發熱層11之水分保持固定之觀點、及能容易地將吸水性片材102所載持之水之量控制於特定範圍之觀點，較佳為使用活性炭。更佳為使用選自由椰殼炭、木粉炭及泥炭所組成之群之1種或2種以上之微細之粉末狀物或小粒狀物。其中，為了易於將吸水性片材102所載持之水之量維持於特定範圍，更佳為木粉炭。 自使碳成分22與被氧化性金屬21均勻地混合之觀點、及易於將吸水性片材102所載持之水之量維持於特定範圍之觀點，作為碳成分22，較佳使用平均粒徑為10 μm以上且200 μm以下者，更佳使用平均粒徑為12 μm以上且100 μm以下者。 對於碳成分22，較佳為使用粉體狀形態者，亦可使用粉體狀以外之形態者，例如，亦可使用纖維狀形態者。 自相同觀點，碳成分22之平均粒徑較佳為10 μm以上，更佳為12 μm以上。又，碳成分22之平均粒徑較佳為200 μm以下，進而較佳為100 μm以下。 再者，碳成分22之平均粒徑係指粉體形態下之最大長度，其藉由動態光散射法、雷射繞射法等而測定。其中，於本實施形態，較佳為藉由雷射繞射法測定碳成分22之平均粒徑。 發熱層11中之碳成分22之含量相對於被氧化性金屬21之含量100質量份，較佳為0.3質量份以上且20質量份以下，更佳為1質量份以上且15質量份以下，進而更佳為3質量份以上且13質量份以下。藉由如此，能使所獲得之發熱部10中蓄積使氧化反應持續所需之水分。又，能充分獲得對發熱部10之供氧，而獲得發熱效率較高之溫熱器具。又，能將發熱部10相對於所獲得之發熱量之熱容量抑制得較小，故而發熱溫度上升增大，能獲得所期望之溫度上升。 又，發熱層11中之碳成分22之含量相對於被氧化性金屬21之含量100質量份，較佳為0.3質量份以上，更佳為1質量份以上，進而更佳為3質量份以上。又，發熱層11中之碳成分22之含量相對於被氧化性金屬21之含量100質量份，較佳為20質量份以下，更佳為15質量份以下，進而更佳為13質量份以下。 再者，發熱層11中之碳成分22之含量以基重計，較佳為4 g/m2 以上且290 g/m2 以下，更佳為7 g/m2 以上且160 g/m2 以下。 又，發熱層11中之碳成分22之含量以基重計，較佳為4 g/m2 以上，更佳為7 g/m2 以上。另一方面，碳成分22之含量以基重計，較佳為290 g/m2 以下，更佳為160 g/m2 以下。 作為吸水性聚合物23，可列舉具有能吸收、保持自重20倍以上之液體之交聯構造的親水性聚合物。作為吸水性聚合物23之形狀，可列舉選自由球狀、塊狀、葡萄房狀及纖維狀所組成之群之1種或2種以上。 吸水性聚合物23之平均粒徑較佳為1 μm以上且1000 μm以下，更佳為10 μm以上且500 μm以下。 吸水性聚合物23之平均粒徑較佳為1 μm以上，更佳為10 μm以上。又，吸水性聚合物23之平均粒徑較佳為1000 μm以下，更佳為500 μm以下。 再者，該吸水性聚合物23之平均粒徑藉由動態光散射法、雷射繞射法等而測定。 作為吸水性聚合物23之具體例，例如可列舉選自由澱粉、交聯羧甲基化纖維素、丙烯酸或者丙烯酸鹼金屬鹽之聚合物或共聚物等、聚丙烯酸與聚丙烯酸鹽及聚丙烯酸鹽接枝聚合物所組成之群之1種或2種以上。其中，自易於將吸水性片材102所載持之水之量維持於特定範圍之觀點，較佳為使用丙烯酸或者丙烯酸鹼金屬鹽之聚合物或共聚物等、聚丙烯酸與聚丙烯酸鹽及聚丙烯酸鹽接枝聚合物。 自較佳地維持發熱部10之溫度之上升之觀點，發熱層11中之吸水性聚合物23之含量相對於被氧化性金屬21之含量100質量份，較佳為5質量份以上，更佳為7質量份以上，進而更佳為9質量份以上。 另一方面，自穩定地產生水蒸汽之觀點，發熱層11中之吸水性聚合物23之含量相對於被氧化性金屬21之含量100質量份，較佳為20質量份以下，更佳為18質量份以下，進而更佳為16質量份以下。 關於發熱層11中所含有之吸水性聚合物23之基重，自較佳地維持發熱部10之溫度之上升之觀點，於乾燥狀態下，該基重較佳為20 g/m2 以上，更佳為25 g/m2 以上，進而更佳為30 g/m2 以上。 另一方面，關於發熱層11中所含有之吸水性聚合物23之基重，自相同觀點，於乾燥狀態下，該基重較佳為100 g/m2 以下，更佳為80 g/m2 以下，進而更佳為60 g/m2 以下。 又，自使發熱層11之厚度得當，且使製造效率良好之觀點，發熱層11中所含有之吸水性聚合物23之乾燥狀態下之基重較佳為20 g/m2 以上且100 g/m2 以下，更佳為25 g/m2 以上且80 g/m2 以下，進而更佳為30 g/m2 以上且60 g/m2 以下。 吸水性聚合物23可均勻地存在於發熱層11中，但自較佳地維持發熱部10之溫度之上升，且穩定地產生水蒸汽之觀點，如圖5所示，較佳為吸水性聚合物23以與吸水性片材102相接之方式配置。為以此方式進行配置，吸水性聚合物23例如積層於發熱層11之一面，而以大致片狀之形狀配置於發熱層11之與吸水性片材102相接之側之面。 積層之方法只要自公知之方法之中適當選擇即可，例如可採用如下方法，即：對含有吸水性聚合物23以外之物質之層，藉由噴霧法等撒布吸水性聚合物23，其後積層吸水性片材102。 再者，如圖5所示，無需使吸水性聚合物23全部與吸水性片材102相接，而只要使其至少一部分與吸水性片材102相接即可。又，亦可為被氧化性金屬21或碳成分22一部分與吸水性片材102相接。 又，於發熱層11中，亦可併用具有吸水性之粉體以提高吸水性。作為具有吸水性之粉體，可列舉選自蛭石、鋸屑、矽膠及紙漿粉末之1種或2種以上。 自穩定地產生水蒸汽之觀點，發熱層11中之水之含量較佳為12質量%以上，更佳為13質量%以上，進而更佳為15質量%以上。另一方面，自較佳地維持發熱體100之溫度之上升之觀點，發熱層11中之水之含量較佳為28質量%以下，更佳為27質量%以下，進而更佳為25質量%以下。 再者，發熱層11中之水之含量例如可藉由如下方法而算出，即：稱取約1g發熱層11，準確稱量其質量，繼而測定所稱取之發熱層11乾燥後之質量，用乾燥前後之質量差除以所稱取之發熱層11之質量。數值可用質量%表示。乾燥條件例如可設定為於150℃下乾燥10分鐘。 於發熱層11中，自較佳地維持發熱體100之溫度之上升，並使所產生之蒸汽量較多，且易於進行溫度控制之觀點，水之含量與碳成分22之含量之質量比率(水/碳成分)較佳為0.5以上，更佳為0.6以上，進而更佳為1以上。 另一方面，水之含量與碳成分22之含量之質量比率(水/碳成分)較佳為8.3以下，更佳為7.7以下，進而更佳為6.4以下。 進而，因發熱部10之透氣性得到充分確保，故能充分獲得供氧，而獲得發熱效率較高之發熱體100。又，能將發熱體100相對於所獲得之發熱量之熱容量抑制得較小，故而發熱溫度上升增大，能獲得所期望之溫度上升。 於發熱層11中，自較佳地維持發熱體100之溫度之上升之觀點，吸水性聚合物23之含量與碳成分22之含量之質量比率(吸水性聚合物/碳成分)較佳為0.4以上，更佳為0.8以上，進而更佳為1.1以上。 另一方面，自易於進行溫度控制之觀點，吸水性聚合物23之含量與碳成分22之含量之質量比率(吸水性聚合物/碳成分)較佳為5以下，更佳為3.5以下，進而更佳為2.5以下。 發熱層11可進而含有反應促進劑。藉由使發熱層11含有反應促進劑，能易於使被氧化性金屬21之氧化反應持續。又，藉由使用反應促進劑，會破壞隨著氧化反應而形成於被氧化性金屬21之氧化被膜，從而能促進氧化反應。 作為反應促進劑，例如可列舉選自由鹼金屬及鹼土金屬之硫酸鹽或氯化物所組成之群之1種或2種以上。其中，自使導電性、化學穩定性、生產成本優異之觀點，較佳為使用選自由氯化鈉、氯化鉀、氯化鈣、氯化鎂、氯化亞鐵(FeCl2 )及氯化鐵(FeCl3 )等各種氯化物、以及硫酸鈉所組成之群之1種或2種以上。 自使充分之發熱量長時間持續之觀點，發熱層11中之反應促進劑之含量相對於被氧化性金屬21之含量100質量份，較佳為2質量份以上且15質量份以下，更佳為3質量份以上且13質量份以下。 自相同觀點，發熱層11中之反應促進劑之含量相對於被氧化性金屬21之含量100質量份，較佳為2質量份以上，更佳為3質量份以上。另一方面，發熱層11中之反應促進劑之含量相對於被氧化性金屬21之含量100質量份，較佳為15質量份以下，更佳為13質量份以下。 發熱層11可進而含有增黏劑。作為增黏劑，主要可使用吸收水分而增大稠度或賦予觸變性之物質。 例如，可使用選自海藻酸鈉等海藻酸鹽、阿拉伯膠、黃蓍膠、刺槐豆膠、瓜爾膠、阿拉伯膠、角叉菜膠、洋菜、三仙膠等多糖類系增黏劑，糊精、α化澱粉、加工用澱粉等澱粉系增黏劑，羧甲基纖維素、乙酸乙基纖維素、羥乙基纖維素、羥甲基纖維素或羥丙基纖維素等纖維素衍生物系增黏劑，硬脂酸鹽等金屬皂系增黏劑，膨潤土等礦物系增黏劑等之1種或2種以上之混合物。 其中，自具有良好之塗敷性能及能將吸水性片材102所載持之水之量維持為特定值之觀點，較佳為多糖類系增黏劑，更佳為分子量100萬以上且5000萬以下之多糖類系增黏劑，進而更佳為分子量150萬以上且4000萬以下之多糖類系增黏劑。又，此外，自具有良好之塗敷性能及耐鹽性之觀點，較佳為三仙膠。 發熱層11中之增黏劑之含量相對於被氧化性金屬21之含量100質量份，較佳為0.05質量份以上且5質量份以下，更佳為0.1質量份以上且4質量份以下。藉由設定為該範圍，能使被氧化性金屬21或碳成分22等固形物成分穩定地分散。又，能賦予觸變性，且進而提高塗敷性能。進而，能容易地將吸水性片材102所載持之水之量維持於特定範圍，因此較佳。 自相同觀點，發熱層11中之增黏劑之含量相對於被氧化性金屬21之含量100質量份，較佳為0.05質量份以上，更佳為0.1質量份以上。另一方面，發熱層11中之增黏劑之含量相對於被氧化性金屬21之含量100質量份，較佳為5質量份以下，更佳為4質量份以下。 於發熱層11中，亦可視需要而含有界面活性劑、藥劑、絮凝劑、著色劑、紙力增強劑、pH控制劑、蓬鬆劑等。 繼而，對本實施形態之發熱部10中所具備之吸水性片材102進行說明。 自較佳地維持發熱體100之溫度之上升，且確保水蒸汽產生之穩定性、溫度控制之容易性之觀點，吸水性片材102之最大吸水能較佳為0.1 g/cm2 以上，更佳為0.15 g/cm2 以上，進而更佳為0.2 g/cm2 以上，再進而更佳為0.5 g/cm2 以上，特佳為0.7 g/cm2 以上。另一方面，自相同觀點，較佳為5 g/cm2 以下，更佳為4 g/cm2 以下，進而更佳為3 g/cm2 以下。 再者，於本發明中，吸水性片材102之最大吸水能藉由如下方法而測定。 〔吸水性片材之最大吸水能(Zmax )之測定法〕 自發熱體100僅將吸水性片材剝下，藉由離子交換水將其洗淨後，於80℃下加熱乾燥10分鐘。將乾燥後之吸水性片材切割成約5 cm見方之尺寸，測定面積(S)[cm2 ]及質量(W0 )[g]後，將其浸漬於5質量%氯化鈉水溶液中5分鐘。其後利用鑷子取出吸水性片材，將其懸吊於空氣中5分鐘而使吸水性片材再也無法承載之水滴下或落下後，測定質量(W1 )[g]，藉由下述式(1)算出吸水性片材之最大吸水能(Zmax )[g/cm2 ]。 ・Zmax ＝(W1 －W0 )/S・・・(式1) 此處，自較佳地維持發熱體100之溫度之上升，且確保蒸汽量產生之穩定性之觀點，吸水性片材102所載持之水之量以基重計，較佳為28 g/m2 以上，更佳為30 g/m2 以上，進而更佳為35 g/m2 以上。又，自易於進行溫度控制之觀點，吸水性片材102所載持之水之量以基重計，較佳為150 g/m2 以下，更佳為140 g/m2 以下，進而更佳為130 g/m2 以下。 再者，吸水性片材102所載持之水之量例如可藉由如下方法而算出，即：自發熱體100僅將吸水性片材剝下，測定面積及質量，繼而測定所剝下之吸水性片材乾燥後之質量，用其質量差除以吸水性片材之面積。數值如上所述可用基重表示。乾燥條件例如可設定為於80℃下乾燥10分鐘。此處所謂之「吸水性片材之面積」係指積層於發熱層之部分之吸水性片材之面積，例如，於發熱層之面積小於吸水性片材之面積之情形時，按與發熱層重疊之部分之吸水性片材之面積算出所謂之「吸水性片材之面積」。 吸水性片材102相對於發熱層11中所含有之吸水性聚合物23之質量比為0.9以上且15以下，自較佳地維持發熱體100之溫度之上升之觀點，較佳為1.5以上，更佳為2以上。又，自穩定地產生水蒸汽之觀點，較佳為13以下，更佳為10以下。 藉由如上所述般得當地設定吸水性片材102相對於吸水性聚合物23之質量比，能有效較佳地維持作為發熱體100之溫度之上升，此外能得當地提高水蒸汽之產生量。 又，藉由將發熱層11中所含有之吸水性聚合物23之乾燥狀態下之基重與下述吸水性片材102之乾燥狀態下之基重組合而得當地控制，能使溫熱器具50之處理性良好，從而可效率良好地賦予溫熱效果，並且能使製造效率良好。 該吸水性片材102例如可由一層纖維片材構成，亦可由二層以上纖維片材積層而成。 作為吸水性片材102，具體而言，可列舉由下述纖維材料製造出之紙、不織布、或紙與不織布積層而成者等。又，亦可為於紙漿纖維或嫘縈纖維等纖維材料進而積層或混合不同纖維材料而成之抄紙、不織布等片材。 藉由使用此種吸水性片材102，能容易地使該片材中所載持之水之量處於特定範圍，又，能較佳地維持發熱體100之溫度之上升，從而有效釋出所產生之水蒸汽，因此較佳。 作為上述纖維材料，可使用親水性纖維及疏水性纖維任一者，較佳為使用親水性纖維，其中使用纖維素纖維能容易地使吸水性片材102所載持之水之量處於特定範圍，又，能有效釋出所產生之水蒸汽，因此更佳。作為纖維素纖維，可使用化學纖維(合成纖維)或天然纖維。 作為纖維素纖維中之化學纖維，例如可使用嫘縈或乙酸。另一方面，作為纖維素纖維中之天然纖維，例如可使用選自各種植物纖維、木材紙漿纖維、非木材紙漿纖維、木棉纖維、麻纖維、麥槁纖維、澤蘭纖維、黃麻纖維、紅棉纖維、椰子纖維、及燈心草纖維之1種或2種以上。使用利用該等纖維素纖維中之木材紙漿纖維所形成之紙能容易地使吸水性片材102所載持之水之量處於特定範圍，又，能有效釋出所產生之水蒸汽，因此較佳。 各種纖維材料之纖維長度較佳為0.5 mm以上且6 mm以下，更佳為0.8 mm以上且4 mm以下。又，纖維材料之纖維長度較佳為0.5 mm以上，更佳為0.8 mm以上。又，纖維材料之纖維長度較佳為6 mm以下，更佳為4 mm以下。 於吸水性片材102，除親水性纖維以外，亦可視需要而調配入疏水性纖維尤其是熱熔合性纖維。調配入熱熔合性纖維之情形時之調配量相對於吸水性片材102中之纖維之總量，較佳為0.1質量%以上且10質量%以下，更佳為0.5質量%以上且5質量%以下。 自相同觀點，熱熔合性纖維之調配量相對於吸水性片材102中之纖維之總量，較佳為0.1質量%以上，更佳為0.5質量%以上。又，熱熔合性纖維之調配量相對於吸水性片材102中之纖維之總量，較佳為10質量%以下，更佳為5質量%以下。 又，吸水性片材102較佳為具有透氣性者，通常會將其透氣度設定為充分小於下述第一收容體片材20a之透氣度之值的值。 自可將片材所載持之水之量容易地調整至特定範圍之觀點，吸水性片材102之乾燥狀態下之基重為50 g/m2 以上，較佳為100 g/m2 以上，更佳為150 g/m2 以上。又，吸水性片材102之乾燥狀態下之基重為500 g/m2 以下，較佳為400 g/m2 以下，更佳為300 g/m2 以下。又，自使吸水性片材102之厚度得當，且使製造效率良好之觀點，吸水性片材102之乾燥狀態下之基重為50 g/m2 以上且500 g/m2 以下，較佳為100 g/m2 以上且400 g/m2 以下，更佳為150 g/m2 以上且300 g/m2 以下。 作為本實施形態之發熱部10之具體態樣，與上述吸水性片材102分開而設置有另一基材層13，且該等吸水性片材102與基材層13之間夾入有發熱層11，而形成所謂之夾層構造。 此處，作為該基材層13，可結合所製造之溫熱器具之用途而適當設定，通常由缺乏吸水性之材質構成，例如可由合成樹脂膜構成。更具體而言，可使用聚乙烯膜、聚對苯二甲酸乙二酯膜、鐵氟龍(註冊商標)膜等。 此處，對本實施形態之發熱部10之作用效果進行說明。 本實施形態之發熱部10具有發熱層11與吸水性片材102積層而成之構造。 藉由採用該構造，發熱層11附近會存在水分，故而易於將發熱層11所產生之熱能有效轉換成蒸汽。又，會達成藉由自吸水性片材102適度供水而使溫度不會變得過高之效果。 又，吸水性片材102係表現出特定物性者，因此易於將外部之氧供給至發熱層11，且能避免發熱層11所產生之熱能向外部逸出。 據此，本實施形態之發熱部10能實現穩定地產生水蒸汽且易於控制為適宜溫度之特性。 又，本實施形態之發熱部10具有發熱層11與吸水性片材102積層而成之構造，較佳為以吸水性片材102位於溫熱器具50之使用者之肌膚側，發熱層11位於使用者之與肌膚側為相反側之方式配置。藉此，能對使用者有效賦予如上所述之特性。 繼而，對發熱部10之製造方法之一例進行說明。 發熱部10例如可藉由如下方法而製作，即：將含有被氧化性金屬21、碳成分22及水等之發熱粉體水分散物塗佈至基材層13，其後對所塗佈之發熱粉體水分散物之層撒布吸水性聚合物23，最後於所撒布之吸水性聚合物23上配置吸水性片材102。 發熱粉體水分散物可藉由一次性將上述成分全部混合而製備，亦可預先在增黏劑溶解於水所得之物中溶解反應促進劑而準備水溶液，其次將被氧化性金屬21與碳成分22預混所得之物混合於水溶液中。 反應促進劑可與發熱粉體水分散物中之其他成分同時混合，亦可藉由浸透、噴霧或滴加等將於塗敷發熱粉體水分散物後另行溶解於水等之反應促進劑添加，或可撒布反應促進劑之粉末。 於對發熱粉體水分散物之層撒布吸水性聚合物23，進而配置吸水性片材102之階段，一部分水會被此等吸水性聚合物23及吸水性片材102吸收，而形成發熱層11。 即，發熱層11係由未被吸水性片材102吸收之殘餘成分所構成。 圖6係對製造本實施形態中所使用之發熱部10之方法進行說明之圖。 如圖6所示，首先，於塗敷槽301，準備含有被氧化性金屬21、碳成分22及水等之發熱粉體水分散物302。亦可藉由攪拌器303攪拌發熱粉體水分散物302，而使被氧化性金屬21及碳成分22等不溶於水之成分更均勻地分散。發熱粉體水分散物302可藉由一次性將上述成分全部混合而製備，亦可預先在增黏劑溶解於水所得之物中溶解反應促進劑而準備水溶液，其次將被氧化性金屬21與碳成分22預混所得之物混合於水溶液中。 繼而，藉由泵304將發熱粉體水分散物302汲取至模頭305為止。一面使用模頭305對所汲取之發熱粉體水分散物302進行加壓擠出，一面將其塗敷至基材103。此時，發熱粉體水分散物302之塗敷基重較佳為160 g/m2 以上且4,800 g/m2 以下，更佳為320 g/m2 以上且2,200 g/m2 以下。 再者，於圖6中，所例示者為利用模嘴塗佈法進行之塗敷，但塗敷方法並不限定於此，例如，亦可使用輥塗法、網版印刷法、凹版輥式塗佈法、刮刀塗佈法、簾幕式塗佈法等。 藉由以上工序，可獲得具備發熱層11及基材103之連續長條狀物，因此藉由對其撒布吸水性聚合物23，最後貼合吸水性片材102，便能獲得積層體。最後，將其裁剪為任意大小，由此形成發熱部10。 再者，於上述方法中，為抑制被氧化性金屬21於製造過程中氧化，亦可視需要而採用保持非氧化性氣氛之措施。 圖4係表示具備圖5所示之發熱部10之溫熱器具之一例的模式剖視圖。如圖4所示，發熱體100具有：發熱部10，其具有吸水性片材102與基材層13之間夾著發熱層11之夾層構造；及收容體20，其至少一部分具有透氣性，且於內部收容發熱部10。 更具體而言，發熱體100採用如下構造，即：將具有發熱層11及吸水性片材102之發熱部10放入至少一部分具有透氣性且由透氣片材構成之收容體20中，並將收容體20之周圍接合而密封。於發熱體100中，發熱層11被夾於吸水性片材102與基材層13之間，因此能防止發熱層11附著於收容體20。 收容體20較佳為包含：第一收容體片材20a；及第二收容體片材20b，其配置於與第一收容體片材20a對向之位置。 第一收容體片材20a與第二收容體片材20b較佳為分別具有自發熱部10之周緣向外側延出之延出區域，且於各延出區域接合。該接合較佳為於周緣連續之氣密接合。藉由第一收容體片材20a與第二收容體片材20b之接合所形成之收容體20具有用以將發熱部10收容於其內部之空間。該空間內收容有發熱部10。發熱部10可為固定於收容體20之狀態，亦可為不固定於收容體20之狀態。 第一收容體片材20a之一部分或全部具有透氣性。自易於進行溫度控制之觀點，第一收容體片材20a之透氣度(JIS P8117，2009年修訂版，於本說明書中均同樣如此)較佳為超過10秒/100 mL，更佳為超過50秒/100 mL，進而更佳為超過100秒/100 mL，特佳為200秒/100 mL以上。 另一方面，自較佳地維持發熱體100之溫度之上升，且使所產生之蒸汽量較多之觀點，第一收容體片材20a之透氣度較佳為8,000秒/100 mL以下，更佳為4,000秒/100 mL以下，進而更佳為2,500秒/100 mL以下，特佳為1,500秒/100 mL以下。 又，自賦予舒適溫感及有效改善眼睛不適感之觀點，第一收容體片材20a之透氣度較佳為超過10秒/100 mL且8,000秒/100 mL以下，更佳為超過50秒/100 mL且4,000秒/100 mL以下，進而更佳為超過100秒/100 mL且2,500秒/100 mL以下，特佳為超過200秒/100 mL且1,500秒/100 mL以下。 作為具有此種透氣度之第一收容體片材20a，較佳為使用例如具有透濕性但不具有透水性之合成樹脂製多孔性片材。具體而言，可使用使聚乙烯含有碳酸鈣等並使之延伸而成之膜。於使用該多孔性片材之情形時，亦可將以選自針刺不織布、熱風不織布及紡黏不織布之1種或2種以上不織布為代表之各種纖維片材層壓於多孔性片材之外表面，而提高第一收容體片材20a之時尚性。第一收容體片材20a可為其一部分或全部具有透氣性之透氣性片材，亦可為不具有透氣性之非透氣性片材，較佳為與第二收容體片材20b相比透氣性更高之片材(即透氣度更低之片材)。 第二收容體片材20b可為其一部分或全部具有透氣性之透氣性片材，亦可為不具有透氣性之非透氣性片材，較佳為與第一收容體片材20a相比透氣性更低之片材(即透氣度更高之片材)。藉由設定為此種構成，作為產生水蒸汽之溫熱器具，能自與作為發熱體之水蒸汽產生面之吸水性片材102相接的第一收容體片材20a產生更多水蒸汽，從而於將溫熱器具應用於身體時能更高效地溫熱應用部位。 於將第二收容體片材20b設定為非透氣性片材之情形時，亦可將以選自針刺不織布、熱風不織布及紡黏不織布之1種或2種以上不織布為代表之各種纖維片材層壓於一層或多層合成樹脂製膜、或該一層或多層合成樹脂製膜之外表面，而提高第二收容體片材20b之時尚性。具體而言，可使用由聚乙烯膜與聚對苯二甲酸乙二酯膜構成之雙層膜、由聚乙烯膜與不織布構成之層壓膜、由聚乙烯膜與紙漿片材構成之層壓膜等，特佳為由聚乙烯膜與紙漿片材構成之層壓膜。 於第二收容體片材20b為透氣性片材之情形時，可使用與第一收容體片材20a相同者，亦可使用與之不同者，較佳為如上所述般與第一收容體片材20a相比透氣性更低之片材(即透氣度更高之片材)。於使用與之不同者之情形時，以第二收容體片材20b之透氣性低於第一收容體片材20a之透氣性為條件，自易於進行溫度控制之觀點，較佳為將第二收容體片材20b之透氣度設定為5,000秒/100 mL以上，更佳為將其設定為8,000秒/100 mL以上。 又，自較佳地維持發熱體100之溫度之上升，且使自第一收容體片材20a側產生之蒸汽量較多之觀點，第二收容體片材20b之透氣度較佳為150,000秒/100 mL以下，更佳為100,000秒/100 mL以下。 又，關於第一收容體片材20a之透濕度，自為使用者帶來水蒸汽，且改善眼睛不適感之觀點，較佳為將該透濕度調整至固定數值以上。另一方面，自調整以水蒸汽之狀態釋出之量，而保持作為發熱體100之高溫之觀點，較佳為將該第一收容體片材20a之透濕度調整至固定數值以下。 更具體而言，自藉由水蒸汽而感受到充分溫感之觀點，第一收容體片材20a之透濕度較佳為800 g/m2 ・24hr以上，更佳為1000 g/m2 ・24hr以上，進而更佳為1300 g/m2 ・24hr以上，自抑制清涼感降低之觀點，較佳為8000 g/m2 ・24hr以下，更佳為6000 g/m2 ・24hr以下，進而更佳為5000 g/m2 ・24hr以下。 再者，透濕度可基於JIS Z0208(1976年制定)藉由杯式法而進行測定。 另一方面，關於第二收容體片材20b之透濕度，自為使用者有效帶來水蒸汽之觀點，較佳為將該透濕度設定為固定數值以下。 自將藉由發熱部10所產生之水蒸汽有效應用於使用者之觀點，第二收容體片材20b之透濕度較佳為750 g/m2 ・24hr以下，更佳為540 g/m2 ・24hr以下。 又，第二收容體片材20b之透濕度之下限值並不特別限定，亦可設定為0 g/m2 ・24hr。 又，於要將發熱部10收容至收容體20時，較佳為以吸水性片材102成為第一收容體片材20a側，且基材層13成為第二收容體片材20b側之方式分別放入，並將周緣部密閉密封。藉此，不僅能使被氧化性金屬21之氧化反應良好，而且能自第一收容體片材20a側產生大量水蒸汽。 又，於收容體20收容有發熱部10之溫熱器具50較佳為將第一收容體片材20a側即吸水性片材102側應用於肌膚者。 收容於收容體20之發熱部10可為1片，亦可形成為複數片積層而成之多層狀態後加以收容。 再者，溫熱器具50亦可於上述袋體53之外表面，例如為構成袋體53之第一袋體片材55或第二袋體片材56之表面，具有塗敷黏著劑而形成之黏著層(未圖示)。 黏著層係用以將溫熱器具50安裝於人體之肌膚、衣服及既存之眼罩等佩戴用品等上。作為構成黏著層之黏著劑，可使用與在以熱熔黏著劑為代表之該技術領域中一直所使用者相同之物。 溫熱器具50較佳為於使用前始終被密封收容於具有阻氧性之包裝袋(未圖示)內。 作為溫熱器具50於人體中之應用部位，例如可列舉肩膀、脖頸、眼睛、眼睛之周圍等，自獲得促進眼淚之效果之觀點，較佳為眼睛及其周圍。具體而言，較佳為將溫熱器具50用作眼罩。 本實施形態之溫熱器具50保持有清涼化劑。所謂清涼化劑係指作用於皮膚、黏膜等而對使用者賦予官能上之清涼感者。 作為清涼化劑，較佳為選自由l-薄荷腦、dl-薄荷腦、d-樟腦、dl-樟腦、d-龍腦、dl-龍腦、香葉草醇所組成之群之1種或2種以上，自賦予溫熱效果並且有效改善眼睛不適感之觀點，更佳為l-薄荷腦及dl-薄荷腦。 作為清涼化劑，除上述以外，自獲取容易性較高等觀點，亦可含有選自由1,8-桉葉素、乳酸薄荷酯、乙酸薄荷酯、琥珀酸單薄荷酯、3-(l-薄荷氧基)-1,2-丙二醇、N-乙基-3-p-薄荷烷甲醯胺所組成之群之1種或2種以上之化合物。藉此，可期待易於使清涼感持續，且能有效改善眼睛不適感。 發熱體100中之清涼化劑之含量相對於發熱部10整體之質量，較佳為0.1質量%以上，更佳為0.2質量%以上，進而更佳為0.4質量%以上。藉由將清涼化劑之含量設定為下限值以上，能促進淚液分泌，且能改善眼睛不適感。 另一方面，自抑制發熱特性降低，且賦予適度清涼感之觀點，發熱體100中之清涼化劑之含量相對於發熱部10整體之質量，較佳為2質量%以下，更佳為1.7質量%以下，進而更佳為1.5質量%以下。 作為使溫熱器具50保持有清涼化劑之形態，例如有如下所述之形態。 (1)清涼化劑包含於發熱部10內之形態 (2)於收容體20之內部配置附帶清涼化劑之片材之形態 (3)於構成收容體20之第一收容體片材20a及第二收容體片材20b至少任一者附帶清涼化劑之形態 (4)於收容體20之外部配置附帶清涼化劑之片材之形態 上述(3)、(4)係清涼化劑被保持於發熱體100外部之形態。藉此，能有效抑制發熱特性降低。其中，自賦予舒適溫感並且減輕眼睛不適感之觀點，較佳為上述(4)之形態。藉此，能使發熱特性穩定，而使清涼化劑效率良好地揮散。又，自使溫熱器具50之製造步驟簡化之觀點，亦較佳。 再者，所謂收容體20之外部係指發熱體100之外部且溫熱器具50之某一部分。收容體20之外部較佳為來自發熱體100之發熱能傳遞的區域，更佳為與發熱體100之外表面相接之區域。 於上述(4)之形態之情形時，自賦予適度清涼感之觀點，清涼化劑相對於發熱部10之俯視面積，較佳為按0.15 g/m2 以上而保持，更佳為按0.5 g/m2 以上而載持，進而更佳為按0.8 g/m2 以上而保持。另一方面，自使發熱特性穩定，且賦予舒適溫感之觀點，清涼化劑相對於發熱部10之俯視面積，較佳為按15 g/m2 以下而保持，更佳為按10 g/m2 以下而保持，進而更佳為按8 g/m2 以下而保持。 其次，對上述(4)之形態進而進行說明。 圖7係發熱體100之與收容體20之片材面正交之方向的剖視圖。如圖7所示，於本實施形態中，溫熱器具50所具有之發熱體100之收容體20的外部配置有附帶清涼化劑之片材212。 於片材212保持有清涼化劑。藉由使配置於收容體20外側之片材212保持有清涼化劑，能效率良好地對使用者供給清涼化劑。 作為片材212，只要為能保持清涼化劑者即可，可列舉紙、不織布、多孔質膜及織布等。 作為使片材212保持清涼化劑之方法，並不特別限定，例如，可利用滴加、噴霧、塗佈、或含浸等方法使之保持。 於本實施形態中，片材212係經由接著劑等而設置於第二收容體片材20b之外表面。即，於遠離使用者肌膚之側之面配置片材212，藉此能將自發熱體100產生之水蒸汽及清涼化劑效率良好地供給至眼睛或眼睛周圍之皮膚。 於本實施形態中，片材212與第二收容體片材20b大小、形狀相同，片材212被覆第二收容體片材20b之整個外表面。再者，片材212亦可為小於或大於第二收容體片材20b者，較佳為與第二收容體片材20b同形。 本實施形態中之溫熱器具50滿足以下條件。 (條件) 於30℃之環境下， 發熱體100開始發熱後每30分鐘之清涼化劑之揮散量為0.05 mg/30分鐘以上且0.30 mg/30分鐘以下，且 自發熱體100開始發熱起至發熱開始後10分鐘為止所測定之累計蒸汽量(mg)與自發熱體100開始發熱起算至發熱開始10分鐘後溫熱器具50之表面最高溫度之上升溫度(℃)的比為5(mg/℃)以上。 此處，先前，自使溫熱器具於開始使用時溫度之上升良好之觀點，有發熱體100於開始發熱後溫度立即上升之傾向。與此相對地，本發明人等自賦予舒適溫感並且減輕眼睛不適感之觀點進行了研究之後得知有效構造為，於使用者能較佳地使用溫熱器具50之時間內，發熱體100一面相對較為緩慢地發熱一面持續賦予蒸汽。而且，發現了如下情況，即：若使清涼化劑之揮散量處於特定範圍，則能藉由得當之溫熱蒸汽與清涼化劑之組合效果，而賦予舒適溫感並且減輕眼睛不適感；由此完成了本發明。 於本實施形態中，溫熱器具50具有一對發熱體100，發熱開始後之清涼化劑之揮散量、及發熱體100開始發熱後之累計蒸汽量表示溫熱器具50整體之數值。又，一對發熱體100會同時開始發熱。 於本實施形態之溫熱器具50中，藉由將發熱體100開始發熱後每30分鐘之清涼化劑之揮散量設定為0.01 mg以上，能對溫熱器具50之使用者賦予適度清涼感，且能降低眼睛不適感，又，能賦予由發熱部10所引起之溫感。另一方面，藉由將發熱體100開始發熱後每30分鐘之清涼化劑之揮散量設定為0.50 mg/30分鐘以下，能抑制過度帶來清涼化劑所致之刺激，且能減小清涼化劑所致之發熱特性之降低。 自有效減輕眼睛不適感之觀點，發熱體100開始發熱後每30分鐘之清涼化劑之揮散量較佳為0.020 mg以上，更佳為0.025 mg以上。另一方面，自降低清涼化劑所致之刺激，且抑制發熱特性降低之觀點，發熱體100開始發熱後每30分鐘之清涼化劑之揮散量較佳為0.50 mg以下，更佳為0.25 mg以下，進而更佳為0.15 mg以下。 於溫熱器具50為眼罩類型之情形時，較佳為對使用者之眼睛分別賦予等量之清涼化劑。 清涼化劑之揮散量能以如下方式進行測定。 首先，準備裝有足以供發熱體100進行氧化反應之量之空氣的15 cm×25 cm之聚氟乙烯樹脂之氣體捕集袋(Tedlar(商標登錄)袋，杜邦公司製造)，將氣體捕集袋之一端部連接於空氣供給源，使另一端部之吐出口或與吐出口連結之管體之前端浸漬於乙醇中。 其次，將於片材212保持有清涼化劑之發熱體100自隔氧袋取出，放入該氣體捕集袋中，然後將其載置於被設定為35℃之加熱板上30分鐘。載置於加熱板上之期間，使空氣自空氣供給源向氣體捕集袋內以固定速度(100 mL/min)流入，並使空氣自氣體捕集袋之另一端部之吐出口或與吐出口連結之管體之前端排出，藉此將自發熱體100揮散出之清涼化劑捕集至乙醇中。又，以將流入氣體捕集袋內之空氣得當地排出之方式，於氣體捕集袋上承載重物，並藉由隔熱材將氣體捕集袋之周圍隔熱，以保持藉由加熱板進行之加溫。 載置30分鐘後，自氣體捕集袋將發熱體100取出，藉由乙醇將氣體捕集袋內洗淨，亦捕集洗淨所使用之乙醇，並合計至清涼化劑之揮散量。清涼化劑之捕集量之分析係藉由氣相層析法而進行。 該等作業全部係於大氣壓下進行。 又，於本實施形態之溫熱器具50中，自發熱體100開始發熱起至發熱開始後10分鐘為止所測定之累計蒸汽量(mg)與自發熱體100開始發熱起算至發熱開始10分鐘後溫熱器具50之表面最高溫度之上升溫度(℃)的比為5(mg/℃)以上。自賦予舒適溫感並且有效減輕眼睛不適感之觀點，自發熱體100開始發熱起至發熱開始後10分鐘為止所測定之累計蒸汽量(mg)與自發熱體100開始發熱起算至發熱開始10分鐘後溫熱器具50之表面最高溫度之上升溫度(℃)的比較佳為7(mg/℃)以上，更佳為8.5(mg/℃)以上。 另一方面，自賦予適度溫熱效果之觀點，自發熱體100開始發熱起至發熱開始後10分鐘為止所測定之累計蒸汽量(mg)與自發熱體100開始發熱起算至發熱開始10分鐘後溫熱器具50之表面最高溫度之上升溫度(℃)的比較佳為20(mg/℃)以下。 又，於本實施形態之溫熱器具50中，自賦予更舒適溫感並且減輕眼睛不適感之觀點，較佳為：發熱體100開始發熱後每30分鐘之清涼化劑之揮散量為0.02 mg以上且0.50 mg以下，且自發熱體100開始發熱起至發熱開始後10分鐘為止所測定之累計蒸汽量(mg)與自發熱體100開始發熱起算至發熱開始10分鐘後溫熱器具50之表面最高溫度之上升溫度(℃)的比為7(mg/℃)以上且20(mg/℃)以下；更佳為：發熱體100開始發熱後每30分鐘之清涼化劑之揮散量為0.025 mg以上且0.25 mg以下，且自發熱體100開始發熱起至發熱開始後10分鐘為止所測定之累計蒸汽量(mg)與自發熱體100開始發熱起算至發熱開始10分鐘後溫熱器具50之表面最高溫度之上升溫度(℃)的比為8.5(mg/℃)以上且20(mg/℃)以下；進而更佳為：發熱體100開始發熱後每30分鐘之清涼化劑之揮散量為0.025 mg以上且0.15 mg以下，且自發熱體100開始發熱起至發熱開始後10分鐘為止所測定之累計蒸汽量(mg)與自發熱體100開始發熱起算至發熱開始10分鐘後溫熱器具50之表面最高溫度之上升溫度(℃)的比為8.5(mg/℃)以上且20(mg/℃)以下。 此處，本發明人等發現：要使溫熱器具50滿足上述條件，較重要為於與先前不同之製法上尋找方法。具體而言，較重要為，將收容體20之構成、材料，收容體20之透氣度及透濕度，發熱部10中所含有之被氧化性金屬、碳成分及水之調配量及材料之選擇，清涼化劑之賦香量等因素組合，並高度地進行控制。即，並非只要單純控制清涼化劑之賦香量及被氧化性金屬之量即可，而是只有使各種因素得當地組合，方能滿足上述條件。 對本實施形態之溫熱器具50之作用效果進行說明。 本實施形態之溫熱器具50係滿足上述條件者。即，溫熱器具50能藉由對特定時間內之清涼化劑之揮散量(mg)、及10分鐘後累計蒸汽量(mg)與溫熱器具50之表面最高溫度之上升溫度(℃)的比等參數進行控制，而利用其等之協同效應，賦予舒適溫感並且減輕眼睛不適感。此處，所謂舒適溫感係指與清涼化劑所帶來之清涼感一併獲得之溫感，與單純之溫熱感或酷熱感不同。又，所謂減輕眼睛不適感之效果，係指藉由促進眼淚分泌，希望達到消除眼睛之乾澀感、眼睛之異物感等，或能幫助改善乾眼症之效果。即，所謂賦予舒適溫感並且減輕眼睛不適感並非單純藉由溫熱器具之發熱效果及清涼化劑之刺激所獲得，而是只有將清涼化劑與得當之發熱蒸汽一併賦予方能獲得之前所未有之效果。 又，自對使用者賦予適度蒸汽感之觀點，本實施形態之溫熱器具50中之發熱體100開始發熱後10分鐘為止所測定之累計蒸汽量較佳為65 mg以上，更佳為100 mg以上，進而更佳為150 mg以上，特佳為170 mg以上。 另一方面，自抑止溫熱器具50中之冷凝之觀點，本實施形態之溫熱器具50中之發熱體100開始發熱後10分鐘為止所測定之累計蒸汽量為3,000 mg以下，較佳為1,600 mg，更佳為500 mg以下。 此處，溫熱器具50之表面最高溫度及累計蒸汽量係利用圖9所示之裝置30以如下方式所測定之數值。 圖9所示之裝置30包含鋁製測定室(容積為4 L)31、使除濕空氣(濕度未達2%，流量為2.1 L/分鐘)流入測定室31下部之流入路徑32、使空氣自測定室31上部流出之流出路徑33、設置於流入路徑32之入口溫濕度計34及入口流量計35、設置於流出路徑33之出口溫濕度計36及出口流量計37、及設置於測定室31內之溫度計(熱敏電阻)38。作為溫度計38，使用溫度分解能為0.01℃左右者。 溫熱器具50之表面最高溫度之測定係藉由如下方法而實施，即：於測定環境溫度30℃(30±1℃)下，將溫熱器具50自隔氧袋取出，使溫熱器具50之位於肌膚側之面、例如水蒸汽易於釋出之面朝上而載置於測定室31，將帶有金屬球(質量為4.5 g)之溫度計38安置於溫熱器具50之俯視視角下發熱部10所處之區域之上而進行計測。 又，於該狀態下，自下部通入除濕空氣，自藉由入口溫濕度計34及出口溫濕度計36計測所得之溫度及濕度，求出空氣流入測定室31之前後之絕對濕度之差，進而自藉由入口流量計35及出口流量計37計測所得之流量，算出發熱體100所釋出之水蒸汽量。 再者，於本說明書中，所謂「溫熱器具50之表面最高溫度」，係指溫熱器具50整個表面上溫度最高之部位、即溫熱器具50之俯視視角下發熱部10所處之區域內之溫度。又，於本說明書中，所謂「自發熱體100開始發熱起算至發熱開始10分鐘後溫熱器具50之表面最高溫度之上升溫度(℃)」，係指發熱體100開始發熱時溫熱器具50之表面最高溫度(℃)與發熱體100開始發熱10分鐘後溫熱器具50之表面最高溫度(℃)的差量。又，本說明書中之「自發熱體開始發熱起至發熱開始後10分鐘為止所測定之累計蒸汽量」，係指以將溫熱器具50自隔氧袋取出之時點、即水蒸汽產生時為起點，至10分鐘後為止所測定之水蒸汽量之總量。 又，自有效兼顧對使用者賦予舒適溫感與減輕眼睛不適感之觀點，溫熱器具50之表面最高達到溫度較佳為35℃以上，更佳為40℃以上，進而更佳為45℃以上。 另一方面，自對使用者賦予舒適溫感之觀點，溫熱器具50之表面最高達到溫度較佳為70℃以下，更佳為65℃以下，進而更佳為60℃以下。 再者，所謂該表面最高達到溫度係指於使用溫熱器具50之過程中溫熱器具50之表面最高溫度達到最高之溫度，可利用上述裝置30進行測定。 溫熱器具50之製造方法包括以下步驟。 準備含有被氧化性金屬、碳成分及水之發熱部10之步驟， 藉由收容體20收容發熱部10，而形成發熱體100之步驟， 對片材賦香清涼化劑之步驟，及 於收容體20之外部配置賦香有清涼化劑之片材之步驟。 以上，一面參照圖式一面對本發明之實施形態進行了敍述，但其等係本發明之例示，亦可採用上述以外之各種構成。 例如，上述實施形態中，於收容體20之外側配置有片材212，且於該片材212保持有清涼化劑，但並不限於此。例如，亦可使發熱部10含有清涼化劑。進而，亦可於構成收容體20之第一收容體片材20a及第二收容體片材20b任一者或兩者保持清涼化劑，或可於收容體20之內側配置保持有清涼化劑之片材。 又，上述實施形態中，配置片材212者係第二收容體片材20b之外側，但亦可於第一收容體片材20a之外側配置保持有清涼化劑之片材。 關於上述實施形態，本發明將進而揭示以下組成物、製造方法或用途。 ＜1＞一種溫熱器具，其具備發熱體，該發熱體具有：發熱部，其含有被氧化性金屬、碳成分及水；及收容體，其一部分具有透氣性，且於內部收容上述發熱部；於上述溫熱器具保持有清涼化劑，並滿足以下條件： (條件) 於30℃之環境下，上述發熱體開始發熱後每30分鐘之上述清涼化劑之揮散量為0.01 mg以上且0.5 mg以下，且自上述發熱體開始發熱起至發熱開始後10分鐘為止所測定之累計蒸汽量(mg)與自上述發熱體開始發熱起算至發熱開始10分鐘後上述溫熱器具之表面最高溫度之上升溫度(℃)的比為5(mg/℃)以上。 ＜2＞如＜1＞所記載之溫熱器具，其中上述發熱體開始發熱後每30分鐘之上述清涼化劑之揮散量較佳為0.020 mg以上，更佳為0.025 mg以上，又，較佳為0.50 mg以下，更佳為0.25 mg以下，進而更佳為0.15 mg以下。 ＜3＞如＜1＞或＜2＞所記載之溫熱器具，其中上述發熱體開始發熱後10分鐘為止所測定之累計蒸汽量較佳為65 mg以上，更佳為100 mg以上，進而更佳為150 mg以上，特佳為170 mg以上，又，較佳為3,000 mg以下，更佳為1,600 mg，進而更佳為500 mg以下。 ＜4＞如＜1＞至＜3＞中任一項所記載之溫熱器具，其中較佳為：上述發熱體開始發熱後每30分鐘之上述清涼化劑之揮散量為0.02 mg以上且0.50 mg以下，且自上述發熱體開始發熱起至發熱開始後10分鐘為止所測定之累計蒸汽量(mg)與自上述發熱體開始發熱起算至發熱開始10分鐘後上述溫熱器具之表面最高溫度之上升溫度(℃)的比為7(mg/℃)以上且20(mg/℃)以下；更佳為：上述發熱體開始發熱後每30分鐘之上述清涼化劑之揮散量為0.025 mg以上且0.25 mg以下，且自上述發熱體開始發熱起至發熱開始後10分鐘為止所測定之累計蒸汽量(mg)與自上述發熱體開始發熱起算至發熱開始10分鐘後上述溫熱器具之表面最高溫度之上升溫度(℃)的比為8.5(mg/℃)以上且20(mg/℃)；進而更佳為：上述發熱體開始發熱後每30分鐘之上述清涼化劑之揮散量為0.025 mg以上且0.15 mg以下，且自上述發熱體開始發熱起至發熱開始後10分鐘為止所測定之累計蒸汽量(mg)與自上述發熱體開始發熱起算至發熱開始10分鐘後上述溫熱器具之表面最高溫度之上升溫度(℃)的比為8.5(mg/℃)以上且20(mg/℃)。 ＜5＞如＜1＞至＜4＞中任一項所記載之溫熱器具，其中溫熱器具50之表面最高達到溫度較佳為35℃以上，更佳為40℃以上，進而更佳為45℃以上，又，較佳為70℃以下，更佳為65℃以下，進而更佳為60℃以下。 ＜6＞如＜1＞至＜4＞中任一項所記載之溫熱器具，其中上述清涼化劑係選自由l-薄荷腦、dl-薄荷腦、d-樟腦、dl-樟腦、d-龍腦、dl-龍腦、及香葉草醇所組成之群之1種或2種以上。 ＜7＞如＜1＞至＜6＞中任一項所記載之溫熱器具，其中上述清涼化劑保持於上述發熱體之外部。 ＜8＞如＜1＞至＜7＞中任一項所記載之溫熱器具，其中上述清涼化劑之含量相對於上述發熱部整體之質量，較佳為0.1質量%以上，更佳為0.2質量%以上，進而更佳為0.4質量%以上，又，較佳為2質量%以下，更佳為1.7質量%以下，進而更佳為1.5質量%以下。 ＜9＞如＜1＞至＜8＞中任一項所記載之溫熱器具，其中上述發熱部進而含有吸水聚合物。 ＜10＞如＜1＞至＜9＞中任一項所記載之溫熱器具，其中上述碳成分之含量相對於上述被氧化性金屬之含量100質量份，較佳為0.3質量份以上，更佳為1質量份以上，進而更佳為3質量份以上，又，較佳為20質量份以下，更佳為15質量份以下，進而更佳為13質量份以下。 ＜11＞如＜9＞或＜10＞中任一項所記載之溫熱器具，其中上述吸水性聚合物之含量相對於上述被氧化性金屬之含量100質量份，較佳為5質量份以上，更佳為7質量份以上，進而更佳為9質量份以上，又，較佳為20質量份以下，更佳為18質量份以下，進而更佳為16質量份以下。 ＜12＞如＜9＞至＜11＞中任一項所記載之溫熱器具，其中上述吸水性聚合物之基重於乾燥狀態下，較佳為20 g/m2 以上，更佳為25 g/m2 以上，進而更佳為30 g/m2 以上，又，較佳為100 g/m2 以下，更佳為80 g/m2 以下，進而更佳為60 g/m2 以下。 ＜13＞如＜1＞至＜12＞中任一項所記載之溫熱器具，其中上述溫熱器具於上述收容體之外部具有片材，且於上述片材保持有上述清涼化劑。 ＜14＞如＜13＞所記載之溫熱器具，其中上述清涼化劑相對於上述發熱部之俯視面積，較佳為按0.15 g/m2 以上而保持，更佳為按0.5 g/m2 以上而載持，進而更佳為按0.8 g/m2 以上而保持，又，較佳為按15 g/m2 以下而保持，更佳為按10 g/m2 以下而保持，進而更佳為按8 g/m2 以下而保持。 ＜15＞如＜1＞至＜14＞中任一項所記載之溫熱器具，其中上述收容體係使用第1片材而形成，該第1片材之依據JIS P8117所測定之透氣度較佳為超過10秒/100 mL，更佳為超過50秒/100 mL，進而更佳為超過100秒/100 mL，特佳為200秒/100 mL以上，又，較佳為8,000秒/100 mL以下，更佳為4,000秒/100 mL以下，進而更佳為2,500秒/100 mL以下，特佳為1,500秒/100 mL以下，又，較佳為超過10秒/100 mL且8,000秒/100 mL以下，更佳為超過50秒/100 mL且4,000秒/100 mL以下，進而更佳為超過100秒/100 mL且2,500秒/100 mL以下，特佳為超過200秒/100 mL且1,500秒/100 mL以下。 ＜16＞如＜1＞至＜15＞中任一項所記載之溫熱器具，其中上述收容體係使用第1片材而形成，該第1片材之依據JIS Z0208所測定之透濕度較佳為800 g/m2 ・24hr以上，更佳為1000 g/m2 ・24hr以上，進而更佳為1300 g/m2 ・24hr以上，又，較佳為8000 g/m2 ・24hr以下，更佳為6000 g/m2 ・24hr以下，進而更佳為5000 g/m2 ・24hr以下。 ＜17＞如＜15＞或＜16＞所記載之溫熱器具，其中上述收容體具備配置於與上述第1片材對向之位置之第2片材，且上述清涼化劑被保持於較上述第2片材更靠外側。 ＜18＞如＜17＞所記載之溫熱器具，其中上述第2片材之透氣性低於上述第1片材之透氣性，又，上述第2片材之透氣性之透氣度較佳設定為5,000秒/100 mL以上，更佳設定為8,000秒/100 mL以上，又，較佳為150,000秒/100 mL以下，更佳為100,000秒/100 mL以下。 ＜19＞如＜17＞或＜18＞所記載之溫熱器具，其中上述第2片材之透濕度較佳為750 g/m2 ・24hr以下，更佳為540 g/m2 ・24hr以下。 ＜20＞如＜1＞至＜19＞中任一項所記載之溫熱器具，其中上述收容體較佳為被收容於具有透氣性之袋體。 ＜21＞如＜1＞至＜20＞中任一項所記載之溫熱器具，其係用作眼罩。 ＜22＞一種眼淚量之增加方法，其藉由將如＜1＞至＜20＞中任一項所記載之溫熱器具佩戴於眼睛而促進眼淚分泌。 [實施例] 以下，藉由實施例對本發明進而詳細地進行說明。然而，本發明之範圍並不受該實施例限制。 ・實施例及比較例 〔發熱粉體水分散物之製備〕 按表1之調配所示之組成比(質量比率)，準備被氧化性金屬、碳成分、水、反應促進劑、pH控制劑及增黏劑等，按以下工序製備發熱粉體水分散物(發熱組成物)。將增黏劑溶解於水，繼而溶解反應促進劑及pH控制劑而準備水溶液。另一方面，準備被氧化性金屬及碳成分預混而成之粉體，將預混粉體放入水溶液中，藉由圓盤渦輪型攪拌翼以150 rpm攪拌10分鐘，而獲得漿狀發熱粉體水分散物。 再者，被氧化性金屬、碳成分、水、反應促進劑及增黏劑之種類、製品名及製造商如下所示。 被氧化性金屬：鐵粉(鐵粉RKH，DOWA IP CREATION股份有限公司製造)平均粒徑45 μm 碳成分：活性炭(CARBORAFIN，日本Enviro Chemicals股份有限公司製造)平均粒徑40 μm 增黏劑：三仙膠(Echo Gum BT，DSP五協食品＆化學股份有限公司製造)分子量2,000,000 水：自來水 pH控制劑1：磷酸三鉀(米山化學工業股份有限公司製造) pH控制劑2：48%氫氧化鉀溶液(關東化學股份有限公司製造) 反應促進劑：氯化鈉(日本藥局方氯化鈉，富田製藥股份有限公司製造) [表1] ＜實施例1＞ 〔發熱部之製作〕 使用PE(polyethylene，聚乙烯)層壓紙(NITTOKU股份有限公司製造)作為基材層，將1.8 g發熱粉體水分散物以大致3 mm之厚度塗敷至24.01 cm2 (4.9 cm×4.9 cm)之基材層之表面。 繼而，將0.072 g吸水性聚合物(球狀，平均粒子徑為300 μm，Aqualic CAW-151，日本觸媒股份有限製造)以大致0.5 mm之厚度撒布於上述發熱粉體水分散物之塗敷面(基重為30 g/m2 )。 繼而，使用4.9 cm×4.9 cm之皺紋紙(基重為63 g/m2 ，大昭和紙工產業股份有限公司製造)作為吸水性片材，將其積層於上述吸水性聚合物之撒布部上並使之一體化，藉此製作發熱部。 〔發熱體之製作〕 將藉由上述方法所獲得之發熱部，以吸水性片材成為第一收容體片材側，且基材層成為第二收容體片材側之方式，分別放入使用透氣度為350秒/100 mL之聚乙烯製多孔片材作為第一收容體片材之收容體(6.5 cm×6.5 cm：其中第二收容體片材為非透氣性)中，並將周緣部密閉密封，而製作發熱體。 〔清涼化劑之保持〕 以乙醇作為溶媒，將l-薄荷腦與桉葉油按8：21之質量比(l-薄荷腦：10.3質量%，桉葉油：26.9質量%，清涼化劑；29.1%)溶解，而製備清涼化劑溶液。 其次，準備吸水紙(基重為35 g/m2 )，以使清涼化劑之保持量成為8 mg之方式，將所製備之27.5 mg清涼化劑溶液塗佈至吸水紙。其後，使乙醇揮發。 再者，於塗佈有27.5 mg上述清涼化劑溶液之情形時，會使每一張吸水紙、即每一個發熱體各保持有2.8 mg薄荷腦及7.4 mg桉葉油。又，因桉葉油之70質量%為1,8-桉葉素，故作為清涼化劑，合計保持有8 mg。 〔溫熱器具之製作〕 藉由接著劑，將保持有清涼化劑之吸水紙層壓至所製作之發熱體之第二收容體片材之外側面。 其次，對於由熱風不織布(透氣度為1秒/100 mL，30 g/m2 )所製成之外裝袋(7.5 cm×7.5 cm)，準備於單面周邊部以寬度1 cm×長度4 cm且100 g/m2 之量塗敷黏著劑蓋住剝離紙而成者，於該外裝袋之中，放入接著有吸水紙之發熱體，並將周緣部密閉密封，而形成溫熱器具。 於實施下述評價前，溫熱器具始終被放在隔氧袋中。再者，一系列作業係於氮氣流下進行。 ＜實施例2＞ 除以使之成為表2所示之構成之方式調整清涼化劑量(mg)以外，其他與實施例1同樣地製作溫熱器具。 ＜實施例3＞ 除使用透氣度為500秒/100 mL之聚乙烯製多孔片材作為第一收容體片材，並以使之成為表2所示之構成之方式調整發熱粉體水分散物之塗敷量(g)、及清涼化劑量(mg)以外，其他與實施例1同樣地製作溫熱器具。 ＜實施例4＞ 除使用透氣度為20秒/100 mL之合成紙作為第一收容體片材，並以使之成為表2所示之構成之方式調整吸水性聚合物之基重(g/m2 )、發熱粉體水分散物之塗敷量(g)、及清涼化劑量(mg)以外，其他與實施例1同樣地製作溫熱器具。 ＜比較例1＞ 除使用透氣度為2500秒/100 mL之聚乙烯製多孔片材作為第一收容體片材，並以使之成為表2所示之構成之方式調整發熱粉體水分散物之塗敷量(g)、及清涼化劑量(mg)以外，其他與實施例1同樣地製作溫熱器具。 對所獲得之溫熱器具，進行以下所示之測定及評價。將結果示於表2中。 ・測定 ＜清涼化劑之揮散量＞ 首先，準備裝有足以供發熱體進行氧化反應之量之空氣的15 cm×25 cm之聚氟乙烯樹脂之氣體捕集袋(Tedlar(商標登錄)袋，杜邦公司製造)，將氣體捕集袋之一端部連接於空氣供給源，使另一端部之吐出口或與吐出口連結之管體之前端浸漬於乙醇中。 其次，將保持有清涼化劑之溫熱器具自隔氧袋取出，放入該氣體捕集袋中，然後將其載置於被設定為35℃之加熱板上30分鐘。載置於加熱板上之期間，使空氣自空氣供給源向氣體捕集袋內以固定速度(100 mL/min)流入，並使空氣自氣體捕集袋之另一端部之吐出口或與吐出口連結之管體之前端排出，藉此將自發熱體揮散出之清涼化劑捕集至乙醇中。又，以將流入氣體捕集袋內之空氣得當地排出之方式，於氣體捕集袋上承載重物，並藉由隔熱材將氣體捕集袋之周圍隔熱，以保持藉由加熱板進行之加溫。 載置30分鐘後，自氣體捕集袋將發熱體取出，藉由乙醇將氣體捕集袋內洗淨，亦捕集洗淨所使用之乙醇，並合計至清涼化劑之揮散量。 清涼化劑之捕集量之分析係藉由氣相層析法(Agilent 6890N，Agilent Technologies股份有限公司製造)而進行。 該等作業全部係於大氣壓下進行。 再者，眼罩類型之溫熱器具要使用2個發熱體，因此溫熱器具之清涼化劑之揮散量係針對一個發熱體所測定之量之2倍。 ＜累計蒸汽量＞ 利用圖9所示之裝置30進行測定。將自隔氧袋取出之溫熱器具以發熱體之位於肌膚側之面(第一收容體片材)朝上之方式載置於測定室31，將帶有金屬球(質量為4.5 g)之溫度計38安置於其上而進行計測。於該狀態下，自下部通入除濕空氣，根據藉由入口溫濕度計34及出口溫濕度計36計測所得之溫度及濕度，求出空氣流入測定室31之前後之絕對濕度之差，進而根據藉由入口流量計35及出口流量計37計測所得之流量，算出溫熱器具所釋出之水蒸汽量。累計蒸汽量係以將溫熱器具自隔氧袋取出之時點為起點，至10分鐘後為止所測定之總量。 ＜表面最高溫度＞ 溫熱器具之表面最高溫度之測定係利用圖7所示之裝置30而進行。即，於測定環境溫度30℃(30±1℃)下，將自隔氧袋取出之溫熱器具以發熱體之位於肌膚側之面(第一收容體片材)朝上之方式載置於測定室31，將帶有金屬球(質量為4.5 g)之溫度計38安置於溫熱器具之俯視視角下發熱部所處之區域之上而進行計測，將溫熱器具自隔氧袋取出後之溫熱器具之表面最高溫度(℃)作為測定值。 以累計蒸汽量(mg)為縱軸，以表面最高溫度(℃)為橫軸，而繪製出圖10之曲線圖。 ＜眼淚分泌量＞ 藉由眼淚分泌量之增加，淚液穩定性增加，至淚液層破開為止之時間(RBUT)延長。使用Auto Ref-Topographer RT-7000(TOMEY CORPORATION；日本愛知縣)之TSAS(Tear Stability Analysis System：淚液穩定性解析系統)模式，以1秒鐘間隔連續測定被試驗者之連同淚液層之厚度亦包括在內之眼表面之形狀(斷層成像)。將眼表面形狀之時間變化視為淚液層之厚度之變化，算出自睜開眼睛時起至淚液層破開為止之時間(秒)作為RBUT，將其當作淚液穩定性之評價指標。 於使用溫熱器具10分鐘之前後，測定RBUT，調查眼淚分泌之變化。使用溫熱器具後之測定係於取下溫熱器具1分鐘後及10分鐘後實施，調查相對於使用溫熱器具前RBUT是否延長。 ・評價 讓3名資深官能檢查員佩戴使用10分鐘各溫熱器具，然後商討決定相當於以下評價基準之哪個水平。 ＜舒適之溫感＞ 5：感受到非常舒適之溫感 4：感受到很舒適之溫感 3：感受到舒適之溫感 2：略微感受到溫感 1：有極小之溫感 ＜眼睛不適感＞ 5：感覺已充分改善 4：感覺已較好改善 3：感覺已改善 2：沒太感覺已改善 1：幾乎未感覺有所改善 [表2] 於實施例1～4中，確認到：佩戴使用10分鐘溫熱器具後，於1分鐘後或10分鐘後，RBUT延長至10秒以上，隨著眼淚分泌量之增加，淚液穩定性增大。The technology described in Patent Document 1 focuses on the improvement of the balance between the intensity of the cooling sensation and the intensity of the aroma, and it is not a subject of specific attention as to what effect the eye can impart. The present inventors have conducted diligent research in order to meet the high demands of users, and as a result, they have found a completely new problem of providing comfort and warmth and reducing eye discomfort. The present inventors have repeatedly studied the relationship between the amount of cooling off of the cooling agent, the amount of steam generated, and the heating temperature, and found that making the heating appliance meet specific conditions is an effective method to solve this problem. That is, according to the present invention, it is possible to provide a warming device that can provide a comfortable warm feeling and reduce eye discomfort. Hereinafter, embodiments of the present invention will be described using drawings. In all drawings, the same constituent elements are denoted by the same symbols, and descriptions thereof are appropriately omitted. [Heating Device] First, an example of the heating device 50 according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a top view of a heating appliance according to this embodiment, and FIG. 2 is an exploded perspective view of the heating appliance according to this embodiment. The heating device 50 of this embodiment is a so-called eye mask type heating device, and a pair of heating elements 100 respectively cover a user's eyes or eyelids to impart water vapor that has been heated to a specific temperature to the eyes and its surroundings. As shown in FIG. 1, the heating device 50 includes a main body portion 51 and an ear-mounting portion 52 formed with an ear-receiving hole 54. The main body portion 51 is formed in a horizontally long shape having a longitudinal direction X and a width direction Y orthogonal to the longitudinal direction X. The main body portion 51 is formed in, for example, a substantially oval shape. The ear-mounting portions 52 are used in pairs, and each ear-mounting portion 52 is attached to each end portion in the longitudinal direction (X direction) of the main body portion 51. The warming device 50 is worn by hooking the ear-mounting portions 52 on the ears of the user and covering the eyes of the user by the body portion 51. In this wearing state, warm steam generated from the heating portion 10 described below will be applied to the eyes of the user. FIG. 2 is an exploded perspective view showing a state before the heating appliance 50 is used. In this figure, the ear-mounting portion 52 is disposed at the uppermost portion of the heating device 50. When in use, the central portion is torn and opened to the left and right, and then it is turned outward to form the state shown in FIG. From the viewpoint of improving fashionability and usability, the heating device 50 further includes a bag body 53. The bag body 53 includes a first bag body sheet 55 located on the side close to the user's skin surface, and a second bag body sheet 56 located on the side away from the user's skin surface. Here, the first bag body sheet 55 and the second bag body sheet 56 are provided so as to sandwich the heat generating section 10 described below. From the viewpoint of preventing internal see-through and maintaining heat retention, flexibility, thickness, etc., the basis weight of each of the first bag body sheet 55 and the second bag body sheet 56 is preferably 20 g / m 2 Above, more preferably 40 g / m 2 the above. The basis weight of each of the first bag body sheet 55 and the second bag body sheet 56 is preferably 200 g / m. 2 Below, more preferably 110 g / m 2 the following. Further, in order for the first bag body sheet 55 to apply the generated water vapor to the user, and for the second bag body sheet 56 to smoothly supply oxygen to the heat generating portion 10, it is preferable that both of them have air permeability. Specifically, the air permeability of the first bag body sheet 55 and the second bag body sheet 56 (JIS P8117, 2009 revision, the same applies to the "air permeability" in this description below) is higher than that of the first container The air permeability of the body sheet 20a is preferably 6,000 seconds / 100 mL or less, more preferably 1,000 seconds / 100 mL or less, even more preferably 500 seconds / 100 mL or less, and particularly preferably 0 seconds / 100 mL. By setting such air permeability, not only can the oxidation reaction of the oxidized metal 21 be good, but also a large amount of water vapor can be generated. That is, by making the containing body 20 in the warming device 50 breathable and the bag body 53 also having air permeability, it is possible to form a warming device 50 that can undergo an oxidation reaction of the oxidized metal 21 and can generate water vapor. The first bag body sheet 55 and the second bag body sheet 56 have the same shape, and both are formed into a substantially oblong shape. The outer shape of the first bag body sheet 55 and the second bag body sheet 56 constitutes the outer shape of the body portion 51. The first bag body sheet 55 and the second bag body sheet 56 are overlapped, the first bag body sheet 55 covers one side of the container 20, and the second bag body sheet 56 covers the container 20 On the other hand, a bag body 53 is formed in an extended area extending outward from the peripheral edge of the containing body 20 so that at least a portion of the peripheral edge portions thereof are joined, and the central portion in the X direction is joined along the Y direction. . Thereby, a space for accommodating the accommodating body 20 can be formed inside the bag body 53, and the heat generating part 10 surrounded by the accommodating body 20 can be accommodated in the space. When the first bag body sheet 55 and the second bag body sheet 56 are to be joined, it is preferable to tightly join them. For example, a hot-melt adhesive can be used. In addition, the receiving body 20 may be in a state of being fixed to the bag body 53, or may be in a state of not being fixed to the bag body 53. The heat generating portion 10 may be fixed to the bag body 53 by an adhesive, heat sealing, or the like (not shown). The first bag body sheet 55 and the second bag body sheet 56 may be breathable, and the types of the sheets are not particularly limited. For example, a fibrous sheet typified by a nonwoven fabric can be used. For example, one kind or two or more kinds selected from a needle-punched nonwoven fabric, a hot-air nonwoven fabric, and a spunbond nonwoven fabric can be used. At the position of the central portion of the two long sides extending in the X direction of the bag body 53, substantially V-shaped groove portions 53A and 53B are formed, which are recessed inward from the long sides in the Y direction. The recessed portions 53A, 53B have different degrees of recession. When the heating device 50 is worn, the recessed portion 53A is located between or near the eyebrows of the user. When the heating device 50 is worn, the groove portion 53B is located at the bridge of the nose of the user. Therefore, in general, the recessed portion 53B has a greater degree of recess than the recessed portion 53A. In a state before use, the ears 52 of the heating device 50 are arranged on the first bag body sheet 55 as shown in FIG. 2. When the warming device 50 is to be used, the ear-mounting portion 52 is turned outward to form an open state. In the state before use, that is, the left and right hanging ear portions 52 are located on the first bag body sheet 55, the outline formed by the left and right hanging ear parts 52 is substantially the same as the outline of the first bag body sheet 55. . Moreover, the same material as the bag body 53 can be used for the ear-mounting part 52. [Heating element] Next, the heating element 100 provided in the heating device 50 will be described with reference to FIGS. 3 to 5. FIG. 3 is a schematic plan view of a heating element used in this embodiment, FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3, and FIG. 5 is a cross-sectional view schematically illustrating a heating portion used in this embodiment. As shown in FIGS. 3 and 4, the heating element 100 according to this embodiment includes: a heating element 10 containing an oxidized metal, a carbon component, and water; and a container 20 that houses the heating element 10. As shown in FIG. 5, the heat generating portion 10 is formed by laminating a heat generating layer 11 and a water-absorbent sheet 102, and further includes a base material layer 13 (base material 103). The heating part 10 generates heat by the oxidation reaction of the oxidized metal 21, thereby giving a sufficient warming effect. In the measurement according to JIS standard S4100, for example, the heating part 10 may have a heating temperature of the heating device 50 of 38 to 70 ℃ performance. As shown in FIG. 5, the heat generating layer 11 includes an oxidizable metal 21, a carbon component 22, a water-absorbing polymer 23, and water. The oxidized metal 21 is a metal that generates an oxidation reaction heat, and examples thereof include one or two or more kinds of powders or fibers selected from the group consisting of iron, aluminum, zinc, manganese, magnesium, and calcium. Among these, iron powder is preferred from the viewpoints of handleability, safety, manufacturing cost, storage stability, and stability. Examples of the iron powder include one or two or more kinds selected from the group consisting of reduced iron powder and atomized iron powder. When the oxidized metal 21 is a powder, the average particle diameter is preferably 10 μm or more and 200 μm or less, and the average particle diameter is more preferably 20 μm or more and 150 μm or less from the viewpoint of efficiently performing the oxidation reaction. The particle size of the oxidized metal 21 refers to the maximum length in the form of a powder, and it is measured by sieving classification, dynamic light scattering method, laser diffraction method, and the like. Among them, in this embodiment, it is preferable to measure the particle diameter of the oxidized metal 21 by a laser diffraction method. From the same viewpoint, the average particle diameter of the oxidized metal 21 is preferably 10 μm or more, and more preferably 20 μm or more. The average particle diameter of the oxidized metal 21 is preferably 200 μm or less, and more preferably 150 μm or less. The content of the oxidized metal 21 in the heating layer 11 is based on a basis weight, preferably 100 g / m 2 Above 3000 g / m 2 Below, more preferably 200 g / m 2 Above 1500 g / m 2 the following. Thereby, the heating temperature of the heating part 10 can be raised to a desired temperature. From the same viewpoint, the content of the oxidized metal 21 in the heating layer 11 is based on a basis weight, preferably 100 g / m 2 Above, more preferably 200 g / m 2 the above. Also, preferably 3000 g / m 2 Below, more preferably 1500 g / m 2 the following. The content of the oxidized metal 21 in the heat generating portion 10 can be determined by an ash test in accordance with JIS P8128 or a thermogravimeter. In addition, it can be quantified by using a property that magnetization occurs when an external magnetic field is applied, by a vibration sample-type magnetization measurement test or the like. Among them, in this embodiment, it is preferable to determine the content of the oxidized metal 21 by a thermogravimeter. The carbon component 22 has water retention energy, oxygen supply energy, and catalyst energy. For example, one or two or more kinds selected from the group consisting of activated carbon, acetylene black, and graphite can be used. From the viewpoint of easily absorbing oxygen when wet, the viewpoint of keeping the moisture content of the heating layer 11 fixed, and the viewpoint of easily controlling the amount of water carried by the water-absorbent sheet 102 to a specific range, activated carbon is preferably used. It is more preferable to use one or two or more finely divided powdery or granular materials selected from the group consisting of coconut shell charcoal, charcoal, and peat. Among them, in order to easily maintain the amount of water carried by the water-absorbent sheet 102 in a specific range, charcoal is more preferred. From the viewpoint of uniformly mixing the carbon component 22 and the oxidized metal 21 and the point that it is easy to maintain the amount of water carried by the water-absorbent sheet 102 in a specific range, as the carbon component 22, an average particle diameter is preferably used. The average particle size is 10 μm or more and 200 μm or less, and the average particle size is more preferably 12 μm or more and 100 μm or less. As for the carbon component 22, it is preferable to use a powder form, and it is also possible to use a form other than a powder form, for example, a fiber form can also be used. From the same viewpoint, the average particle diameter of the carbon component 22 is preferably 10 μm or more, and more preferably 12 μm or more. The average particle diameter of the carbon component 22 is preferably 200 μm or less, and more preferably 100 μm or less. The average particle diameter of the carbon component 22 refers to the maximum length in the form of a powder, and is measured by a dynamic light scattering method, a laser diffraction method, or the like. Among these, in this embodiment, it is preferable to measure the average particle diameter of the carbon component 22 by a laser diffraction method. The content of the carbon component 22 in the heating layer 11 is 100 parts by mass relative to the content of the oxidized metal 21, preferably 0.3 parts by mass or more and 20 parts by mass or less, more preferably 1 part by mass or more and 15 parts by mass or less, and furthermore It is more preferably 3 parts by mass or more and 13 parts by mass or less. By doing so, it is possible to accumulate in the obtained heat generating portion 10 the water necessary for continuing the oxidation reaction. In addition, it is possible to sufficiently obtain the oxygen supply to the heat generating portion 10 and obtain a heating device having a high heat generation efficiency. In addition, since the heat capacity of the heat generating portion 10 with respect to the obtained heat generation amount can be suppressed to be small, the heat generation temperature increase is increased, and a desired temperature increase can be obtained. The content of the carbon component 22 in the heating layer 11 is 100 parts by mass relative to the content of the oxidized metal 21, preferably 0.3 parts by mass or more, more preferably 1 part by mass or more, and even more preferably 3 parts by mass or more. The content of the carbon component 22 in the heat generating layer 11 is 100 parts by mass relative to the content of the oxidized metal 21, preferably 20 parts by mass or less, more preferably 15 parts by mass or less, and even more preferably 13 parts by mass or less. In addition, the content of the carbon component 22 in the heating layer 11 is based on a basis weight, and is preferably 4 g / m. 2 Above 290 g / m 2 Below, more preferably 7 g / m 2 Above 160 g / m 2 the following. The content of the carbon component 22 in the heating layer 11 is based on a basis weight, and is preferably 4 g / m. 2 Above, more preferably 7 g / m 2 the above. On the other hand, the content of the carbon component 22 is preferably 290 g / m on a basis weight basis. 2 Below, more preferably 160 g / m 2 the following. Examples of the water-absorptive polymer 23 include a hydrophilic polymer having a crosslinked structure capable of absorbing and retaining a liquid having a weight of 20 times or more. Examples of the shape of the water-absorptive polymer 23 include one or two or more types selected from the group consisting of a spherical shape, a block shape, a vine shape, and a fibrous shape. The average particle diameter of the water-absorbing polymer 23 is preferably 1 μm or more and 1000 μm or less, and more preferably 10 μm or more and 500 μm or less. The average particle diameter of the water-absorbing polymer 23 is preferably 1 μm or more, and more preferably 10 μm or more. The average particle diameter of the water-absorbing polymer 23 is preferably 1,000 μm or less, and more preferably 500 μm or less. The average particle diameter of the water-absorbing polymer 23 is measured by a dynamic light scattering method, a laser diffraction method, or the like. Specific examples of the water-absorbing polymer 23 include, for example, a polymer or copolymer selected from starch, croscarmellose, acrylic acid or an alkali metal salt of acrylic acid, polyacrylic acid, polyacrylate, and polyacrylate. One or more types of groups consisting of graft polymers. Among them, from the viewpoint of easily maintaining the amount of water carried by the water-absorbent sheet 102 in a specific range, it is preferable to use acrylic acid or acrylic acid alkali metal salt polymers or copolymers, polyacrylic acid and polyacrylates, and polyacrylic acid. Acrylate graft polymer. From the viewpoint of better maintaining the temperature rise of the heat generating portion 10, the content of the water-absorbing polymer 23 in the heat generating layer 11 is 100 parts by mass with respect to the content of the oxidized metal 21, preferably 5 parts by mass or more, and more preferably It is 7 parts by mass or more, and more preferably 9 parts by mass or more. On the other hand, from the viewpoint of stably generating water vapor, the content of the water-absorbing polymer 23 in the heating layer 11 is 100 parts by mass relative to the content of the oxidized metal 21, preferably 20 parts by mass or less, and more preferably 18 parts by mass. The content is less than or equal to 16 parts by mass. Regarding the basis weight of the water-absorptive polymer 23 contained in the heat generating layer 11, from the viewpoint that the temperature rise of the heat generating portion 10 is preferably maintained, the basis weight is preferably 20 g / m in a dry state. 2 Above, more preferably 25 g / m 2 Above, and further preferably 30 g / m 2 the above. On the other hand, regarding the basis weight of the water-absorptive polymer 23 contained in the heating layer 11, from the same viewpoint, in a dry state, the basis weight is preferably 100 g / m 2 Below, more preferably 80 g / m 2 Below, more preferably 60 g / m 2 the following. In addition, from the viewpoint of making the thickness of the heat generating layer 11 appropriate and improving the manufacturing efficiency, the basis weight of the water-absorbing polymer 23 contained in the heat generating layer 11 in a dry state is preferably 20 g / m. 2 Above 100 g / m 2 Below, more preferably 25 g / m 2 Above 80 g / m 2 Below, even more preferably 30 g / m 2 Above 60 g / m 2 the following. The water-absorptive polymer 23 can exist uniformly in the heat-generating layer 11, but from the viewpoint of maintaining the temperature rise of the heat-generating part 10 and generating water vapor stably, as shown in FIG. 5, a water-absorptive polymer is preferred. The object 23 is arranged so as to be in contact with the water-absorbent sheet 102. To arrange in this manner, the water-absorbing polymer 23 is laminated on one surface of the heat-generating layer 11, for example, and is arranged in a substantially sheet-like shape on the side of the heat-generating layer 11 that is in contact with the water-absorbing sheet 102. The lamination method may be appropriately selected from publicly known methods. For example, a method may be adopted in which a layer containing a substance other than the water-absorptive polymer 23 is sprayed with the water-absorptive polymer 23 by a spray method or the like, and then laminated. Water-absorbing sheet 102. Further, as shown in FIG. 5, it is not necessary to make all of the water-absorptive polymer 23 contact the water-absorbent sheet 102, but it is sufficient to make at least a part of the water-absorptive polymer 23 contact the water-absorbent sheet 102. Further, a part of the oxidizable metal 21 or the carbon component 22 may be in contact with the water-absorbent sheet 102. In addition, in the heat generating layer 11, a powder having a water absorption property may be used in combination to increase the water absorption property. Examples of the water-absorbing powder include one or two or more selected from vermiculite, sawdust, silicone, and pulp powder. From the viewpoint of stably generating water vapor, the content of water in the heat generating layer 11 is preferably 12% by mass or more, more preferably 13% by mass or more, and even more preferably 15% by mass or more. On the other hand, from the viewpoint of better maintaining the temperature rise of the heating element 100, the content of water in the heating layer 11 is preferably 28% by mass or less, more preferably 27% by mass or less, and even more preferably 25% by mass. the following. Furthermore, the content of water in the heating layer 11 can be calculated by, for example, the following method: Weigh about 1g of the heating layer 11 and accurately weigh its mass, and then measure the mass of the weighed heating layer 11 after drying, Divide the mass difference before and after drying by the mass of the heating layer 11 taken out. The value can be expressed in mass%. The drying conditions can be set to, for example, drying at 150 ° C. for 10 minutes. In the heat generating layer 11, since the temperature of the heat generating body 100 is preferably maintained to increase, and the amount of steam generated is large, and the temperature control is easy, the mass ratio of the content of water to the content of the carbon component 22 ( Water / carbon component) is preferably 0.5 or more, more preferably 0.6 or more, and even more preferably 1 or more. On the other hand, the mass ratio (water / carbon component) of the content of water to the content of the carbon component 22 is preferably 8.3 or less, more preferably 7.7 or less, and even more preferably 6.4 or less. Furthermore, since the air permeability of the heat generating portion 10 is sufficiently ensured, oxygen supply can be sufficiently obtained, and a heat generating body 100 having a high heat generating efficiency can be obtained. In addition, since the heat capacity of the heating element 100 with respect to the obtained heat generation amount can be suppressed to be small, the heating temperature increase is increased, and a desired temperature increase can be obtained. In the heat generating layer 11, from the viewpoint of preferably maintaining the temperature rise of the heat generating body 100, the mass ratio of the content of the water-absorbing polymer 23 to the content of the carbon component 22 (water-absorbing polymer / carbon component) is preferably 0.4. The above is more preferably 0.8 or more, and even more preferably 1.1 or more. On the other hand, from the viewpoint of easy temperature control, the mass ratio (water-absorbing polymer / carbon component) of the content of the water-absorbing polymer 23 to the content of the carbon component 22 is preferably 5 or less, more preferably 3.5 or less, and More preferably, it is 2.5 or less. The heat generating layer 11 may further contain a reaction accelerator. When the heat generating layer 11 contains a reaction accelerator, the oxidation reaction of the oxidized metal 21 can be easily continued. In addition, by using a reaction accelerator, the oxidation film formed on the oxidized metal 21 due to the oxidation reaction is destroyed, and the oxidation reaction can be promoted. Examples of the reaction accelerator include one or two or more kinds selected from the group consisting of sulfates or chlorides of alkali metals and alkaline earth metals. Among them, it is preferable to use a member selected from the group consisting of sodium chloride, potassium chloride, calcium chloride, magnesium chloride, and ferrous chloride (FeCl) from the viewpoint of excellent conductivity, chemical stability, and production cost. 2 ) And ferric chloride (FeCl 3 ) And other chlorides, and one or more groups of sodium sulfate. From the viewpoint of making sufficient heat generation last for a long time, the content of the reaction accelerator in the heating layer 11 is 100 parts by mass with respect to the content of the oxidized metal 21, preferably 2 parts by mass or more and 15 parts by mass or less, more preferably It is 3 parts by mass or more and 13 parts by mass or less. From the same viewpoint, the content of the reaction accelerator in the heat generating layer 11 is 100 parts by mass with respect to the content of the oxidized metal 21, preferably 2 parts by mass or more, and more preferably 3 parts by mass or more. On the other hand, the content of the reaction accelerator in the heat generating layer 11 is 100 parts by mass relative to the content of the oxidized metal 21, preferably 15 parts by mass or less, and more preferably 13 parts by mass or less. The heat generating layer 11 may further contain a tackifier. As the thickener, a substance that absorbs moisture to increase thickness or impart thixotropy can be mainly used. For example, a polysaccharide based thickener selected from alginates such as sodium alginate, acacia gum, tragacanth gum, locust bean gum, guar gum, acacia gum, carrageenan, amaranth, and xanthan gum can be used , Starch-based thickeners such as dextrin, alpha starch, and processing starch; cellulose such as carboxymethyl cellulose, ethyl acetate, hydroxyethyl cellulose, hydroxymethyl cellulose, or hydroxypropyl cellulose Derivatives such as tackifiers, metal soap-based tackifiers such as stearates, and mineral-based tackifiers such as bentonite. Among them, from the viewpoint of having good coating performance and maintaining the amount of water carried by the water-absorbent sheet 102 to a specific value, a polysaccharide-based thickener is preferable, and a molecular weight of 1 million or more and 5000 is more preferable. Polysaccharide-based thickeners below 10,000, more preferably polysaccharide-based thickeners with molecular weights of 1.5 million to 40 million. In addition, from the viewpoint of having good coating performance and salt resistance, Sanxian gum is preferred. The content of the tackifier in the heating layer 11 is 100 parts by mass relative to the content of the oxidized metal 21, preferably 0.05 parts by mass or more and 5 parts by mass or less, and more preferably 0.1 parts by mass or more and 4 parts by mass or less. By setting it as this range, the solid component, such as the to-be-oxidized metal 21 and the carbon component 22, can be stably disperse | distributed. In addition, it can impart thixotropy and further improve coating performance. Furthermore, since the amount of water carried by the water-absorbent sheet 102 can be easily maintained in a specific range, it is preferable. From the same viewpoint, the content of the tackifier in the heating layer 11 is 100 parts by mass relative to the content of the oxidized metal 21, preferably 0.05 parts by mass or more, and more preferably 0.1 parts by mass or more. On the other hand, the content of the tackifier in the heating layer 11 is 100 parts by mass relative to the content of the oxidized metal 21, preferably 5 parts by mass or less, and more preferably 4 parts by mass or less. The heating layer 11 may also contain a surfactant, a medicament, a flocculant, a colorant, a paper strength enhancer, a pH control agent, a fluffing agent, and the like, as necessary. Next, the water-absorbent sheet 102 included in the heat generating portion 10 of this embodiment will be described. From the viewpoint of better maintaining the temperature rise of the heating element 100 and ensuring the stability of water vapor generation and the ease of temperature control, the maximum water absorption capacity of the water-absorbent sheet 102 is preferably 0.1 g / cm 2 Above, more preferably 0.15 g / cm 2 Above, more preferably 0.2 g / cm 2 Above, more preferably 0.5 g / cm 2 Above, especially good is 0.7 g / cm 2 the above. On the other hand, from the same viewpoint, it is preferably 5 g / cm 2 Below, more preferably 4 g / cm 2 Below, even more preferably 3 g / cm 2 the following. In the present invention, the maximum water absorption of the water-absorbent sheet 102 can be measured by the following method. [Maximum water absorption capacity of water-absorbent sheet (Z max Measurement method of)] Only the water-absorbent sheet was peeled from the heating element 100, washed with ion-exchanged water, and then heated and dried at 80 ° C for 10 minutes. The dried absorbent sheet was cut to a size of about 5 cm square, and the area (S) [cm 2 ] And quality (W 0 ) [g], and this was immersed in a 5% by mass sodium chloride aqueous solution for 5 minutes. After that, the water-absorbent sheet was taken out with tweezers and suspended in the air for 5 minutes so that the water-absorbent sheet could no longer carry water droplets or drops, and then the mass (W 1 ) [g], and calculate the maximum water absorption energy (Z of the water-absorbent sheet) by the following formula (1) max ) [g / cm 2 ]. ·Z max = (W 1 －W 0 ) / S ... (Formula 1) Here, from the viewpoint of better maintaining the temperature rise of the heating element 100 and ensuring the stability of steam generation, the amount of water carried by the water-absorbent sheet 102 is Basis weight, preferably 28 g / m 2 Above, more preferably 30 g / m 2 Above, more preferably 35 g / m 2 the above. In addition, from the viewpoint of easy temperature control, the amount of water carried by the water-absorbent sheet 102 is based on a basis weight, and is preferably 150 g / m. 2 Below, more preferably 140 g / m 2 Below, further more preferably 130 g / m 2 the following. In addition, the amount of water carried by the water-absorbent sheet 102 can be calculated by, for example, the following method: the self-heating body 100 only peels off the water-absorbent sheet, measures the area and mass, and then measures the peeled off The mass of the absorbent sheet after drying is divided by the difference in mass by the area of the absorbent sheet. Values can be expressed as basis weights as described above. The drying conditions can be set, for example, at 80 ° C for 10 minutes. The “area of the water-absorbent sheet” herein refers to the area of the water-absorbent sheet laminated on the heat-generating layer. For example, when the area of the heat-generating layer is smaller than the area of the water-absorbent sheet, The area of the superposed water-absorbent sheet is calculated as the "area of the water-absorbent sheet". The mass ratio of the water-absorbent sheet 102 to the water-absorbent polymer 23 contained in the heat-generating layer 11 is 0.9 or more and 15 or less. From the viewpoint of maintaining the temperature rise of the heat-generating body 100 better, it is preferably 1.5 or more. More preferably, it is 2 or more. From the viewpoint of stably generating water vapor, it is preferably 13 or less, and more preferably 10 or less. By appropriately setting the mass ratio of the water-absorbent sheet 102 to the water-absorbent polymer 23 as described above, the temperature rise of the heating element 100 can be effectively and better maintained, and the amount of water vapor generated can be appropriately increased. . In addition, by combining the basis weight in the dry state of the water-absorbing polymer 23 contained in the heat-generating layer 11 with the basis weight in the dry state of the water-absorbing sheet 102 described below, the local control can be performed, and a heating appliance can be made. The 50 points are reasonably good, so that the warming effect can be efficiently imparted, and the manufacturing efficiency can be improved. The water-absorbent sheet 102 may be composed of, for example, one fiber sheet, or may be formed by laminating two or more fiber sheets. Specific examples of the water-absorbent sheet 102 include paper, nonwoven fabric, or a laminate of paper and nonwoven fabric made of the following fiber materials. Alternatively, it may be a sheet such as papermaking or non-woven fabric, which is formed by laminating or mixing different fiber materials on fiber materials such as pulp fibers or rayon fibers. By using such a water-absorbent sheet 102, the amount of water carried in the sheet can be easily brought into a specific range, and the temperature rise of the heating element 100 can be better maintained, thereby effectively releasing the generated water. Water vapor is preferred. As the above-mentioned fibrous material, any of hydrophilic fibers and hydrophobic fibers can be used, and it is preferable to use hydrophilic fibers, in which the use of cellulose fibers can easily bring the amount of water carried by the water-absorbent sheet 102 into a specific range. Also, it can effectively release the generated water vapor, so it is better. As the cellulose fiber, a chemical fiber (synthetic fiber) or a natural fiber can be used. As the chemical fiber in the cellulose fiber, for example, rhenium or acetic acid can be used. On the other hand, as the natural fiber in the cellulose fiber, for example, various kinds of plant fibers, wood pulp fibers, non-wood pulp fibers, kapok fibers, hemp fibers, malt fibers, Zelen fibers, jute fibers, red fibers can be used. One or more types of cotton fiber, coconut fiber, and rush fiber. The use of paper formed from wood pulp fibers in these cellulose fibers can easily keep the amount of water carried by the absorbent sheet 102 in a specific range, and can effectively release the generated water vapor, so it is preferred . The fiber length of each fiber material is preferably 0.5 mm or more and 6 mm or less, and more preferably 0.8 mm or more and 4 mm or less. The fiber length of the fiber material is preferably 0.5 mm or more, and more preferably 0.8 mm or more. The fiber length of the fiber material is preferably 6 mm or less, and more preferably 4 mm or less. In addition to the hydrophilic fibers, the water-absorbent sheet 102 may be blended with hydrophobic fibers, especially heat-fusible fibers, as needed. In the case of blending thermally fusible fibers, the blending amount is preferably 0.1% by mass or more and 10% by mass or less, more preferably 0.5% by mass or more and 5% by mass relative to the total amount of fibers in the water-absorbent sheet 102. the following. From the same viewpoint, the blending amount of the heat-fusible fibers is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, relative to the total amount of the fibers in the water-absorbent sheet 102. The blending amount of the heat-fusible fibers is preferably 10% by mass or less, and more preferably 5% by mass or less based on the total amount of the fibers in the water-absorbent sheet 102. The water-absorbent sheet 102 is preferably one having air permeability, and the air permeability is generally set to a value sufficiently smaller than the value of the air permeability of the first storage body sheet 20a described below. From the viewpoint that the amount of water carried by the sheet can be easily adjusted to a specific range, the basis weight of the water-absorbent sheet 102 in a dry state is 50 g / m 2 Above, preferably 100 g / m 2 Above, more preferably 150 g / m 2 the above. The basis weight of the water-absorbent sheet 102 in a dry state is 500 g / m 2 Below, preferably 400 g / m 2 Below, more preferably 300 g / m 2 the following. In addition, from the viewpoint that the thickness of the water-absorbent sheet 102 is appropriate and the manufacturing efficiency is good, the basis weight of the water-absorbent sheet 102 in a dry state is 50 g / m. 2 Above 500 g / m 2 Below, preferably 100 g / m 2 Above 400 g / m 2 Below, more preferably 150 g / m 2 Above 300 g / m 2 the following. As a specific aspect of the heat generating portion 10 of this embodiment, another base material layer 13 is provided separately from the water-absorbent sheet 102 described above, and heat is interposed between the water-absorbent sheet 102 and the base material layer 13. Layer 11 to form a so-called sandwich structure. Here, the base material layer 13 can be appropriately set in accordance with the use of the manufactured heating device, and is usually made of a material that lacks water absorption, for example, a synthetic resin film. More specifically, a polyethylene film, a polyethylene terephthalate film, a Teflon (registered trademark) film, or the like can be used. Here, the function and effect of the heat generating portion 10 according to this embodiment will be described. The heat generating portion 10 of this embodiment has a structure in which a heat generating layer 11 and a water-absorbent sheet 102 are laminated. By adopting this structure, moisture exists in the vicinity of the heat generating layer 11, so it is easy to effectively convert the thermal energy generated by the heat generating layer 11 into steam. In addition, it is possible to achieve an effect that the temperature is not excessively increased by the moderate water supply of the self-absorbent sheet 102. In addition, since the water-absorbent sheet 102 exhibits specific physical properties, it is easy to supply external oxygen to the heat generating layer 11, and it is possible to prevent heat energy generated by the heat generating layer 11 from escaping to the outside. According to this, the heat generating portion 10 of this embodiment can realize the characteristics of stably generating water vapor and being easily controlled to an appropriate temperature. In addition, the heating portion 10 of this embodiment has a structure in which a heating layer 11 and a water-absorbent sheet 102 are laminated. It is preferable that the water-absorbent sheet 102 is located on the skin side of the user of the heating device 50, and the heating layer 11 is located It is arranged so that the user's side is opposite to the skin side. This makes it possible to effectively provide the user with the characteristics described above. Next, an example of a manufacturing method of the heating part 10 is demonstrated. The heat-generating portion 10 can be produced, for example, by applying an aqueous heat-emitting powder dispersion containing an oxidizable metal 21, a carbon component 22, water, and the like to the base material layer 13, and thereafter applying the The layer of the heating powder water dispersion is sprayed with the water-absorptive polymer 23, and finally the water-absorptive sheet 102 is disposed on the water-absorptive polymer 23 to be sprayed. The exothermic powder water dispersion can be prepared by mixing all of the above components at one time, or dissolving the reaction accelerator in the solution obtained by dissolving the tackifier in water in advance to prepare an aqueous solution, followed by the oxidized metal 21 and carbon The premixed ingredients 22 are mixed in an aqueous solution. The reaction accelerator can be mixed with other components in the aqueous powder heat dispersion at the same time, or it can be added by soaking, spraying or dripping. , Or can be sprinkled with powder of reaction accelerator. In the stage where the water-absorbing polymer 23 is sprinkled on the layer of the water-dispersing heating powder and the water-absorbing sheet 102 is arranged, part of the water will be absorbed by the water-absorbing polymer 23 and the water-absorbing sheet 102 to form a heat-generating layer. 11. That is, the heat generating layer 11 is composed of the residual components that are not absorbed by the water-absorbent sheet 102. FIG. 6 is a diagram illustrating a method of manufacturing the heat generating portion 10 used in this embodiment. As shown in FIG. 6, first, in a coating tank 301, an aqueous powder 302 of heat generating powder containing an oxidized metal 21, a carbon component 22, and water is prepared. The water-dispersed powder 302 of the heating powder can also be stirred by the stirrer 303 to disperse the water-insoluble components such as the oxidized metal 21 and the carbon component 22 more uniformly. The exothermic powder aqueous dispersion 302 can be prepared by mixing all the above-mentioned components at one time, or dissolving a reaction accelerator in a solution obtained by dissolving the tackifier in water in advance to prepare an aqueous solution, and then the oxidized metal 21 and The carbon component 22 was premixed and mixed in an aqueous solution. Then, the heating powder water dispersion 302 is drawn up to the die head 305 by the pump 304. The extracted heat-generating powder water dispersion 302 was extruded using a die 305 while being applied to the substrate 103. At this time, the coating basis weight of the heating powder water dispersion 302 is preferably 160 g / m 2 Above 4,800 g / m 2 Below, more preferably 320 g / m 2 Above and 2,200 g / m 2 the following. In addition, in FIG. 6, the coating is illustrated by a die coating method, but the coating method is not limited to this. For example, a roll coating method, a screen printing method, or a gravure roller method may be used. Coating method, doctor blade coating method, curtain coating method, and the like. Through the above steps, a continuous strip having the heat-generating layer 11 and the substrate 103 can be obtained. Therefore, by spreading the water-absorbing polymer 23 thereon and finally bonding the water-absorbing sheet 102, a laminated body can be obtained. Finally, it is cut to an arbitrary size, thereby forming the heat generating portion 10. Furthermore, in the above method, in order to suppress the oxidation of the oxidized metal 21 during the manufacturing process, measures to maintain a non-oxidizing atmosphere may also be adopted as necessary. FIG. 4 is a schematic cross-sectional view showing an example of a heating device including the heating portion 10 shown in FIG. 5. As shown in FIG. 4, the heat generating body 100 has: a heat generating portion 10 having a sandwich structure in which a heat generating layer 11 is sandwiched between a water-absorbent sheet 102 and a base material layer 13; and a container 20 having at least a part thereof having air permeability. The heat generating portion 10 is housed inside. More specifically, the heat-generating body 100 has a structure in which the heat-generating portion 10 having the heat-generating layer 11 and the water-absorbing sheet 102 is placed in at least a part of the container 20 having air permeability and made of a breathable sheet, and The periphery of the container 20 is joined and sealed. In the heat generating body 100, the heat generating layer 11 is sandwiched between the water-absorbent sheet 102 and the base material layer 13, so that the heat generating layer 11 can be prevented from adhering to the container 20. The containing body 20 preferably includes: a first containing body sheet 20a; and a second containing body sheet 20b, which are disposed at positions facing the first containing body sheet 20a. The first container body sheet 20a and the second container body sheet 20b preferably each have an extended area extending outward from the peripheral edge of the heat generating portion 10 and are joined at each extended area. This joining is preferably an air-tight joining continuous at the periphery. The storage body 20 formed by joining the first storage body sheet 20a and the second storage body sheet 20b has a space for accommodating the heat generating part 10 inside thereof. The space includes a heat generating portion 10. The heat generating portion 10 may be in a state of being fixed to the containing body 20 or may be in a state of not being fixed to the containing body 20. Part or all of the first storage body sheet 20a has air permeability. From the viewpoint of easy temperature control, the air permeability of the first container sheet 20a (JIS P8117, 2009 revision, which is also the same in this specification) is preferably more than 10 seconds / 100 mL, and more preferably more than 50 Seconds / 100 mL, more preferably more than 100 seconds / 100 mL, and particularly preferably 200 seconds / 100 mL or more. On the other hand, from the viewpoint that the temperature of the heating element 100 is preferably maintained and the amount of generated steam is large, the air permeability of the first container sheet 20a is preferably 8,000 seconds / 100 mL or less, It is preferably 4,000 seconds / 100 mL or less, more preferably 2,500 seconds / 100 mL or less, and particularly preferably 1,500 seconds / 100 mL or less. In addition, from the viewpoints of providing comfort and warmth and effectively improving eye discomfort, the air permeability of the first container body sheet 20a is preferably more than 10 seconds / 100 mL and less than 8,000 seconds / 100 mL, more preferably more than 50 seconds / 100 mL and 4,000 seconds / 100 mL or less, further preferably more than 100 seconds / 100 mL and 2,500 seconds / 100 mL or less, and particularly preferably more than 200 seconds / 100 mL and 1,500 seconds / 100 mL or less. As the first container sheet 20a having such air permeability, it is preferable to use, for example, a porous sheet made of a synthetic resin having moisture permeability but not water permeability. Specifically, it is possible to use a film obtained by stretching and containing calcium carbonate or the like in polyethylene. When the porous sheet is used, various fiber sheets represented by one or two or more types of non-woven fabrics selected from a needle-punched nonwoven fabric, a hot-air nonwoven fabric, and a spunbond nonwoven fabric may be laminated on the porous sheet material. The outer surface improves the fashionability of the first container sheet 20a. The first container sheet 20a may be a breathable sheet having a part or all of air permeability, and may also be a non-breathable sheet having no air permeability, and is preferably more breathable than the second container sheet 20b. Sheets with higher properties (ie sheets with lower air permeability). The second container sheet 20b may be a breathable sheet having a part or all of air permeability, and may also be a non-air-permeable sheet having no air permeability, and is preferably more breathable than the first container sheet 20a. Sheets with lower permeability (ie sheets with higher air permeability). By setting it as such a structure, as a heating device which generates water vapor, it is possible to generate more water vapor from the first container sheet 20a which is in contact with the water-absorbent sheet 102 which is a water vapor generating surface of a heating element, Therefore, when the warming appliance is applied to the body, the application site can be warmed up more efficiently. In the case where the second container sheet 20b is set as a non-breathable sheet, various fiber sheets represented by one or two or more types of non-woven fabrics selected from a needle-punched nonwoven fabric, a hot-air nonwoven fabric, and a spunbonded nonwoven fabric may be used. The material is laminated on one or more layers of synthetic resin film, or the outer surface of the one or more layers of synthetic resin film, thereby improving the fashion of the second container sheet 20b. Specifically, a two-layer film composed of a polyethylene film and a polyethylene terephthalate film, a laminate film composed of a polyethylene film and a nonwoven fabric, and a laminate composed of a polyethylene film and a pulp sheet can be used. Films and the like are particularly preferably laminated films composed of a polyethylene film and a pulp sheet. In the case where the second container body sheet 20b is a breathable sheet, the same as the first container body sheet 20a or a different one may be used, preferably as described above with the first container body. The sheet 20a is less air-permeable (i.e., a more air-permeable sheet). When a different case is used, on the condition that the air permeability of the second container sheet 20b is lower than the air permeability of the first container sheet 20a, from the viewpoint of easy temperature control, it is preferable to change the second container sheet 20b. The air permeability of the container sheet 20b is set to 5,000 seconds / 100 mL or more, and more preferably it is set to 8,000 seconds / 100 mL or more. From the viewpoint that the temperature of the heating element 100 is preferably maintained and the amount of steam generated from the first container sheet 20a is large, the air permeability of the second container sheet 20b is preferably 150,000 seconds. / 100 mL or less, more preferably 100,000 seconds / 100 mL or less. In addition, regarding the moisture permeability of the first container sheet 20a, from the viewpoint of bringing water vapor to the user and improving eye discomfort, it is preferable to adjust the moisture permeability to a fixed value or more. On the other hand, from the viewpoint of adjusting the amount released in the state of water vapor while maintaining the high temperature of the heating element 100, it is preferable to adjust the moisture permeability of the first container sheet 20a to a fixed value or less. More specifically, the moisture permeability of the first container sheet 20a is preferably 800 g / m from the viewpoint of feeling sufficient warmth by water vapor. 2 ・ More than 24hr, more preferably 1000 g / m 2 ・ More than 24hr, more preferably 1300 g / m 2 ・ At least 24hr, 8000 g / m is preferred from the viewpoint of suppressing a decrease in cooling sensation 2 ・ Below 24hr, more preferably 6000 g / m 2 ・ Less than 24hr, more preferably 5000 g / m 2 ・ Below 24hr. The water vapor transmission rate can be measured by a cup method based on JIS Z0208 (established in 1976). On the other hand, regarding the moisture permeability of the second container sheet 20b, from the viewpoint of effectively bringing water vapor to the user, it is preferable to set the moisture permeability to a fixed value or less. From the viewpoint that the water vapor generated by the heating portion 10 is effectively applied to the user, the moisture permeability of the second container sheet 20b is preferably 750 g / m 2 ・ Less than 24hr, more preferably 540 g / m 2 ・ Below 24hr. The lower limit value of the moisture permeability of the second container sheet 20b is not particularly limited, and may be set to 0 g / m. 2 ・ 24hr. When the heat generating portion 10 is to be stored in the container 20, it is preferable that the water-absorbent sheet 102 becomes the first container sheet 20a side and the base material layer 13 becomes the second container sheet 20b side. Put them in separately, and hermetically seal the periphery. Thereby, not only can the oxidation reaction of the oxidized metal 21 be good, but also a large amount of water vapor can be generated from the first container sheet 20a side. Moreover, it is preferable that the heating device 50 in which the heat generating part 10 is accommodated in the storage body 20 is a person who applies the first storage body sheet 20a side, that is, the water-absorbing sheet 102 side to the skin. The heat generating part 10 accommodated in the containing body 20 may be one sheet, or may be formed into a multilayered state in which a plurality of sheets are laminated and then stored. In addition, the heating device 50 may be formed on the outer surface of the bag body 53, for example, the surface of the first bag body sheet 55 or the second bag body sheet 56 constituting the bag body 53 by applying an adhesive. Adhesive layer (not shown). The adhesive layer is used to mount the warming device 50 on the skin, clothes, and existing eyewear of the human body. As the adhesive constituting the adhesive layer, the same thing as those conventionally used in the technical field represented by hot-melt adhesives can be used. The warming device 50 is preferably sealed and stored in a packaging bag (not shown) having an oxygen barrier property before use. Examples of the application part of the warming device 50 to the human body include shoulders, necks, eyes, and the surroundings of the eyes. From the viewpoint of obtaining the effect of promoting tears, the eyes and the surroundings are preferred. Specifically, it is preferable to use the heating device 50 as an eye mask. The warming device 50 of this embodiment holds a cooling agent. The so-called cooling agent refers to a person who acts on the skin, mucous membrane, and the like to impart a functional cooling sensation to the user. The cooling agent is preferably one selected from the group consisting of l-menthol, dl-menthol, d-camphor, dl-camphor, d-borneol, dl-borneol, and geraniol, or Two or more kinds are l-menthol and dl-menthol from the viewpoint of imparting a warming effect and effectively improving eye discomfort. As a cooling agent, in addition to the above, from the viewpoint of high availability, it may contain a member selected from the group consisting of 1,8-eucalyptol, menthyl lactate, menthyl acetate, monomenthyl succinate, and (Oxy) -1,2-propanediol, N-ethyl-3-p-menthane formamide, one or two or more compounds. With this, it is expected that the refreshing feeling can be easily continued, and the eye discomfort can be effectively improved. The content of the cooling agent in the heating element 100 is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and still more preferably 0.4% by mass or more with respect to the mass of the entire heating portion 10. By setting the content of the cooling agent above the lower limit value, tear secretion can be promoted, and eye discomfort can be improved. On the other hand, from the standpoint of reducing heat generation characteristics and imparting a moderate cooling sensation, the content of the cooling agent in the heating element 100 is preferably 2% by mass or less, and more preferably 1.7% by mass relative to the mass of the entire heating portion 10 % Or less, more preferably 1.5 mass% or less. As a form which keeps the warming device 50 as a cooling agent, the form as described below is mentioned, for example. (1) The form in which the cooling agent is contained in the heat generating part 10 (2) The form in which a sheet with a cooling agent is arranged inside the container 20 (3) The first container sheet 20a and Form of at least one of the second container body 20b with a cooling agent (4) Form of disposing a sheet with a cooling agent on the outside of the container 20 (3), (4) The cooling agent is maintained Appearance outside the heating element 100. Thereby, it is possible to effectively suppress a decrease in heat generation characteristics. Among these, from the viewpoint of providing comfort and warmth and reducing eye discomfort, the form (4) is preferable. This makes it possible to stabilize the exothermic properties and to efficiently disperse the cooling agent. It is also preferable from the viewpoint of simplifying the manufacturing steps of the heating device 50. In addition, the outside of the containing body 20 means a part of the heating device 50 outside the heating body 100. The outside of the containing body 20 is preferably a region where heat energy is transmitted from the heating body 100, and more preferably a region that is in contact with the outer surface of the heating body 100. In the case of the form (4) above, from the viewpoint of imparting a moderate cooling sensation, the plan view area of the cooling agent relative to the heating portion 10 is preferably 0.15 g / m. 2 The above is maintained, more preferably 0.5 g / m 2 Carrying the above, and more preferably 0.8 g / m 2 The above is maintained. On the other hand, from the viewpoint of stabilizing the heat generating characteristics and providing a comfortable warmth, the cooling agent is preferably 15 g / m in plan view area with respect to the heat generating portion 10. 2 Keep it below, more preferably at 10 g / m 2 Keep it below, and more preferably 8 g / m 2 Keep the following. Next, the aspect of said (4) is demonstrated further. FIG. 7 is a cross-sectional view of the heating body 100 in a direction orthogonal to the sheet surface of the containing body 20. As shown in FIG. 7, in the present embodiment, a sheet 212 with a cooling agent is arranged on the outside of the housing 20 of the heating element 100 included in the heating device 50. A cooling agent is held on the sheet 212. By keeping the cooling agent in the sheet 212 disposed outside the container 20, the cooling agent can be efficiently supplied to the user. The sheet 212 may be any one capable of holding a cooling agent, and examples thereof include paper, nonwoven fabric, porous film, and woven fabric. The method for holding the cooling agent in the sheet 212 is not particularly limited, and for example, it can be held by a method such as dropping, spraying, coating, or impregnation. In this embodiment, the sheet 212 is provided on the outer surface of the second container sheet 20b via an adhesive or the like. That is, the sheet 212 is disposed on the side far from the user's skin, whereby the water vapor and the cooling agent generated from the heating element 100 can be efficiently supplied to the eyes or the skin around the eyes. In this embodiment, the sheet 212 is the same size and shape as the second container sheet 20b, and the sheet 212 covers the entire outer surface of the second container sheet 20b. In addition, the sheet 212 may be smaller or larger than the second container body sheet 20b, and is preferably the same shape as the second container body sheet 20b. The heating device 50 in this embodiment satisfies the following conditions. (Condition) In a 30 ° C environment, the volatility of the cooling agent every 30 minutes after the heating body 100 starts to generate heat is 0.05 mg / 30 minutes or more and 0.30 mg / 30 minutes or less, The ratio of the cumulative amount of steam (mg) measured up to 10 minutes after the start of heating to the maximum temperature (° C) of the maximum surface temperature of the heating device 50 from the start of heating of the heating body 100 to 10 minutes after the start of heating is 5 (mg / ° C) or more. Here, in the past, from the viewpoint that the temperature rise of the heating device at the start of use was good, the temperature of the heating element 100 immediately increased after the heat generation started. On the other hand, the present inventors have studied from the viewpoints of providing comfort and warmth and reducing eye discomfort, and have found that the effective structure is such that the heating element 100 is within a time when the user can use the warming device 50 better. Steam was continuously applied while generating heat relatively slowly. Moreover, it has been found that if the volatilization amount of the cooling agent is in a specific range, it can provide a comfortable and warm feeling and reduce eye discomfort through the proper combination of warm steam and cooling agent; This completes the present invention. In the present embodiment, the heating device 50 includes a pair of heating elements 100, and the amount of the cooling agent after the heating starts and the cumulative amount of steam after the heating element 100 starts generating heat indicate the entire value of the heating device 50. In addition, the pair of heating elements 100 will start to generate heat at the same time. In the warming device 50 of this embodiment, by setting the volatilizing amount of the cooling agent every 30 minutes after the heating element 100 starts to generate heat, the user can be given a moderate cooling sensation, In addition, it can reduce eye discomfort, and can also provide a warm feeling caused by the heat generating portion 10. On the other hand, by setting the volatilizing amount of the cooling agent every 30 minutes after the heating element 100 starts to generate heat, the amount of cooling agent can be reduced to 0.50 mg / 30 minutes or less. Degradation of heating properties caused by chemical agents. From the viewpoint of effectively reducing eye discomfort, the volatilizing amount of the cooling agent every 30 minutes after the fever body 100 starts to heat is preferably 0.020 mg or more, more preferably 0.025 mg or more. On the other hand, from the viewpoint of reducing the irritation caused by the cooling agent and suppressing the reduction in heating characteristics, the volatility of the cooling agent every 30 minutes after the heating element 100 starts to heat is preferably 0.50 mg or less, more preferably 0.25 mg The content is more preferably 0.15 mg or less. In the case where the warming device 50 is an eye mask type, it is preferable to impart an equal amount of a cooling agent to the eyes of the user. The volatilization amount of the cooling agent can be measured as follows. First, a 15 cm × 25 cm polyvinyl fluoride resin gas trap bag (Tedlar (trademark registration) bag, manufactured by DuPont) containing air sufficient for the oxidation reaction of the heating element 100 was prepared to trap the gas One end of the bag is connected to an air supply source, and the front end of the other end of the outlet or the pipe body connected to the outlet is immersed in ethanol. Next, the heating element 100 holding the cooling agent in the sheet 212 is taken out from the oxygen barrier bag, placed in the gas trap bag, and then placed on a heating plate set at 35 ° C for 30 minutes. While being placed on the hot plate, air is allowed to flow in from the air supply source into the gas trapping bag at a fixed speed (100 mL / min), and air is ejected from the spouting port or the other end of the gas trapping bag. The front end of the tube connected to the outlet is discharged, thereby trapping the cooling agent emitted from the heating element 100 into ethanol. In addition, in order to properly discharge the air flowing into the gas trapping bag, a heavy object is carried on the gas trapping bag, and the surrounding of the gas trapping bag is insulated by a heat insulating material, so as to maintain the heating plate. Perform heating. After being left for 30 minutes, the heating element 100 was taken out from the gas trapping bag, and the gas trapping bag was washed with ethanol. The ethanol used for the washing was also collected and added up to the amount of the cooling agent. The analysis of the captured amount of the cooling agent was performed by gas chromatography. These operations are all carried out under atmospheric pressure. In the heating device 50 of the present embodiment, the cumulative steam amount (mg) measured from the time when the heating element 100 starts to heat up to 10 minutes after the start of heating and the time from the time when the heating element 100 starts to heat up to 10 minutes after the heating starts The ratio of the rising temperature (° C) of the maximum surface temperature of the heating device 50 is 5 (mg / ° C) or more. From the viewpoint of providing comfortable temperature and effectively reducing eye discomfort, the cumulative amount of steam (mg) measured from the time when the heating element 100 starts to heat up to 10 minutes after the start of heating and the time from the time when the heating element 100 starts to heat up to 10 minutes from the start of heating The rising temperature (° C) of the maximum surface temperature of the after-heating device 50 is preferably 7 (mg / ° C) or more, and more preferably 8.5 (mg / ° C) or more. On the other hand, from the viewpoint of imparting a moderate heating effect, the cumulative amount of steam (mg) measured from the time when the heating element 100 starts to heat up to 10 minutes after the start of heating, and from the time when the heating element 100 starts to heat up to 10 minutes after the start of heating The rising temperature (° C) of the maximum surface temperature of the heating device 50 is preferably 20 (mg / ° C) or less. Moreover, in the heating device 50 of this embodiment, from the viewpoint of providing a more comfortable temperature feeling and reducing eye discomfort, it is preferable that the volatilizing amount of the cooling agent every 30 minutes after the heating element 100 starts to generate heat is 0.02 mg Above and below 0.50 mg, and the cumulative amount of steam (mg) measured from the time when the heating element 100 starts to heat up to 10 minutes after the start of heating, and the surface of the heating device 50 from the time when the heating element 100 starts to heat up to 10 minutes after the start of heating The ratio of the rising temperature (° C) of the highest temperature is 7 (mg / ° C) or more and 20 (mg / ° C) or less; more preferably, the cooling agent volatilization amount is 0.025 mg every 30 minutes after the heating body 100 starts to heat. Above and below 0.25 mg, and the cumulative amount of steam (mg) measured from the time when the heating element 100 started to heat up to 10 minutes after the start of heating and the surface of the heating device 50 from the time when the heating element 100 started to heat up to 10 minutes after the start of heating The ratio of the rising temperature (° C) of the highest temperature is 8.5 (mg / ° C) or more and 20 (mg / ° C) or less; further preferably: the volatilizing amount of the cooling agent every 30 minutes after the heating element 100 starts to generate heat is 0.025 Above mg and below 0.15 mg, starting from heating body 100 The ratio of the cumulative amount of steam (mg) measured from the heating up to 10 minutes after the start of heating to the maximum temperature (° C) of the maximum surface temperature of the heating device 50 from the time when the heating body 100 started to heat up to 10 minutes after the start of heating was 8.5 (mg / ° C) or more and 20 (mg / ° C) or less. Here, the present inventors have found that in order for the heating device 50 to satisfy the above conditions, it is more important to find a method different from the previous method. Specifically, it is more important to select the composition and material of the container 20, the air permeability and moisture permeability of the container 20, the amount of the oxidized metal, carbon component, and water contained in the heating portion 10 and the selection of materials. , The amount of fragrance and other factors of the cooling agent, and highly controlled. That is, it is not only necessary to control the fragrance amount of the cooling agent and the amount of the oxidized metal, but only to properly combine various factors to satisfy the above conditions. The effect of the heating device 50 of this embodiment will be described. The heating device 50 according to this embodiment satisfies the above conditions. That is, the temperature of the heating appliance 50 can be determined by measuring the amount (mg) of the cooling agent in a specific time and the cumulative amount of steam (mg) after 10 minutes and the rising temperature (° C) of the maximum surface temperature of the heating appliance 50. And other parameters to control, and use their synergistic effects to give a comfortable warmth and reduce eye discomfort. Here, the term “comfortable warmth” refers to a warmth obtained in conjunction with the cooling sensation brought about by a cooling agent, and is different from a simple warmth or a feeling of extreme heat. In addition, the effect of reducing eye discomfort refers to promoting the secretion of tears, hoping to eliminate the dryness of the eyes, the foreign body feeling of the eyes, etc., or the effect of improving dry eye symptoms. That is, the so-called giving comfort and warmth and reducing eye discomfort are not simply obtained by the heating effect of the warming device and the stimulation of the cooling agent, but can only be obtained by giving the cooling agent together with the appropriate heating steam. Unprecedented effect. In addition, from the viewpoint of imparting a moderate steam sensation to the user, the cumulative steam amount measured up to 10 minutes after the heating element 100 in the heating device 50 of this embodiment starts to generate heat is preferably 65 mg or more, and more preferably 100 mg. Above, and further more preferably 150 mg or more, particularly preferably 170 mg or more. On the other hand, from the viewpoint of suppressing condensation in the heating device 50, the cumulative amount of steam measured 10 minutes after the heating element 100 in the heating device 50 of this embodiment starts to generate heat is 3,000 mg or less, preferably 1,600. mg, more preferably 500 mg or less. Here, the maximum surface temperature and the accumulated steam amount of the heating device 50 are values measured in the following manner using the device 30 shown in FIG. 9. The device 30 shown in FIG. 9 includes an aluminum measurement chamber (with a volume of 4 L) 31, an inflow path 32 for allowing dehumidified air (humidity less than 2%, flow rate of 2.1 L / min) to flow into the lower part of the measurement chamber 31, and air from An outflow path 33 flowing out of the upper part of the measurement chamber 31, an inlet temperature-hygrometer 34 and an inlet flow meter 35 provided in the inflow path 32, an outlet temperature-hygrometer 36 and an outlet flow meter 37 provided in the outflow path 33, and the measurement room 31 Inside the thermometer (thermistor) 38. As the thermometer 38, a temperature decomposition energy of about 0.01 ° C is used. The measurement of the maximum surface temperature of the warming device 50 is performed by measuring the ambient temperature at 30 ° C (30 ± 1 ° C), taking out the warming device 50 from the oxygen barrier bag, and making the warming device 50 The surface on the skin side, for example, the side where water vapor is easy to release, is placed in the measurement chamber 31, and the thermometer 38 with a metal ball (4.5 g in mass) is placed in a heating device 50 in a plan view to generate heat The measurement is performed over the area where the section 10 is located. In this state, the dehumidified air is introduced from the lower part, and the temperature and humidity measured by the inlet temperature hygrometer 34 and the outlet temperature hygrometer 36 are used to determine the difference between the absolute humidity before and after the air flows into the measurement chamber 31. Furthermore, the amount of water vapor released from the heating element 100 was calculated from the flow rates measured by the inlet flow meter 35 and the outlet flow meter 37. In addition, in this specification, the "highest temperature on the surface of the heating appliance 50" refers to the highest temperature part of the entire surface of the heating appliance 50, that is, the area where the heating part 10 is located in the top view of the heating appliance 50. Within the temperature. In addition, in this specification, the "rising temperature (° C) of the maximum surface temperature of the heating device 50 from the time when the heating body 100 starts heating to 10 minutes after the heating starts" means the heating device 50 when the heating body 100 starts heating. The difference between the maximum surface temperature (° C) of the surface and the maximum surface temperature (° C) of the heating device 50 10 minutes after the heating element 100 starts to generate heat. In the present specification, "the cumulative amount of steam measured from the time when the heating element starts heating to 10 minutes after the start of heating" refers to the time when the heating device 50 is taken out of the oxygen barrier bag, that is, when water vapor is generated. Starting point, the total amount of water vapor measured up to 10 minutes later. In addition, from the viewpoint of effectively giving comfort to the user and reducing eye discomfort, the maximum temperature of the surface of the heating device 50 is preferably 35 ° C or higher, more preferably 40 ° C or higher, and even more preferably 45 ° C or higher. . On the other hand, from the viewpoint of providing a comfortable and warm feeling to the user, the maximum temperature of the surface of the heating device 50 is preferably 70 ° C. or lower, more preferably 65 ° C. or lower, and even more preferably 60 ° C. or lower. In addition, the maximum surface temperature refers to the temperature at which the maximum temperature of the surface of the heating device 50 reaches the highest temperature during the use of the heating device 50, and can be measured by the device 30 described above. The manufacturing method of the heating appliance 50 includes the following steps. A step of preparing a heat generating portion 10 containing an oxidized metal, a carbon component, and water; a step of forming the heat generating body 100 by containing the heat generating portion 10 by a container 20; a step of adding a fragrance and cooling agent to the sheet; The step of arranging a sheet containing a cooling agent on the outside of the body 20. The embodiments of the present invention have been described above with reference to the drawings, but they are examples of the present invention, and various configurations other than the above may be adopted. For example, in the above-mentioned embodiment, the sheet 212 is arranged on the outer side of the container 20 and the cooling agent is held in the sheet 212, but it is not limited to this. For example, the heat generating part 10 may contain a cooling agent. Further, the cooling agent may be maintained on either or both of the first container body sheet 20a and the second container body sheet 20b constituting the container body 20, or a cooling agent may be disposed and held inside the container body 20 Of sheet. In the above-mentioned embodiment, the person arranging the sheet 212 is outside the second container sheet 20b, but a sheet holding a cooling agent may be disposed outside the first container sheet 20a. Regarding the above embodiment, the present invention will further disclose the following composition, manufacturing method, or application. <1> A heating device comprising a heating element, the heating element having: a heating portion containing an oxidized metal, a carbon component, and water; and a container having a part of which is breathable and houses the heating portion inside ; Keep the cooling agent in the warming device and meet the following conditions: (Condition) In the environment of 30 ° C, the volatility of the cooling agent every 30 minutes after the heating element starts to generate heat is 0.01 mg or more and 0.5 less than mg, and the cumulative amount of steam (mg) measured from the time when the heating element started to heat up to 10 minutes after the start of heating, and the maximum temperature of the surface of the heating device from the time when the heating body started to heat and 10 minutes after the start of heating The ratio of the rising temperature (° C) is 5 (mg / ° C) or more. <2> The warming appliance according to <1>, wherein the volatility of the cooling agent every 30 minutes after the heating element starts to generate heat is preferably 0.020 mg or more, more preferably 0.025 mg or more, and more preferably It is 0.50 mg or less, more preferably 0.25 mg or less, and still more preferably 0.15 mg or less. <3> The heating appliance according to <1> or <2>, in which the cumulative amount of steam measured 10 minutes after the heating element starts to generate heat is preferably 65 mg or more, more preferably 100 mg or more, and even more It is preferably 150 mg or more, particularly preferably 170 mg or more, and more preferably 3,000 mg or less, more preferably 1,600 mg, and even more preferably 500 mg or less. <4> The warming device according to any one of <1> to <3>, wherein the volatilizing amount of the cooling agent is preferably 0.02 mg or more and 0.50 per 30 minutes after the heating element starts to generate heat. less than mg, and the cumulative amount of steam (mg) measured from the time when the heating element started to heat up to 10 minutes after the start of heating The ratio of the rising temperature (° C) is 7 (mg / ° C) or more and 20 (mg / ° C) or less; more preferably: the volatilizing amount of the cooling agent is 0.025 mg or more every 30 minutes after the heating element starts to generate heat and 0.25 mg or less, and the cumulative amount of steam (mg) measured from the time when the heating element starts heating to 10 minutes after the start of heating, and the maximum surface temperature of the heating device from the time when the heating element starts heating to 10 minutes after the start of heating The ratio of the rising temperature (° C) is 8.5 (mg / ° C) or more and 20 (mg / ° C); further preferably, the cooling amount of the cooling agent is more than 0.025 mg every 30 minutes after the heating element starts to generate heat. And less than 0.15 mg from the above heating element The ratio of the cumulative amount of steam (mg) measured from the beginning of heating to 10 minutes after the start of heating and the rising temperature (° C) of the maximum surface temperature of the heating device from the beginning of the heating of the heating body to 10 minutes after the start of heating is 8.5 (mg / ° C) or more and 20 (mg / ° C). <5> The warming appliance according to any one of <1> to <4>, wherein the highest temperature of the surface of the warming appliance 50 is preferably 35 ° C or higher, more preferably 40 ° C or higher, and even more preferably 45 ° C or higher, more preferably 70 ° C or lower, more preferably 65 ° C or lower, even more preferably 60 ° C or lower. <6> The warming device according to any one of <1> to <4>, wherein the cooling agent is selected from the group consisting of l-menthol, dl-menthol, d-camphor, dl-camphor, and d- One or two or more groups of Borneol, dl-borneol, and geraniol. <7> The warming appliance according to any one of <1> to <6>, wherein the cooling agent is kept outside the heating element. <8> The warming appliance according to any one of <1> to <7>, wherein the content of the cooling agent is preferably 0.1% by mass or more, and more preferably 0.2 relative to the mass of the entire heating portion. Mass% or more, more preferably 0.4 mass% or more, more preferably 2 mass% or less, more preferably 1.7 mass% or less, and still more preferably 1.5 mass% or less. <9> The heating device according to any one of <1> to <8>, wherein the heat generating portion further contains a water-absorbing polymer. <10> The heating device according to any one of <1> to <9>, wherein the content of the carbon component is 100 parts by mass with respect to the content of the oxidized metal, preferably 0.3 part by mass or more, more It is preferably 1 part by mass or more, more preferably 3 parts by mass or more, still more preferably 20 parts by mass or less, still more preferably 15 parts by mass or less, and still more preferably 13 parts by mass or less. <11> The heating device according to any one of <9> or <10>, wherein the content of the water-absorbing polymer is 100 parts by mass with respect to the content of the oxidized metal, and preferably 5 parts by mass or more It is more preferably 7 parts by mass or more, still more preferably 9 parts by mass or more, still more preferably 20 parts by mass or less, still more preferably 18 parts by mass or less, still more preferably 16 parts by mass or less. <12> The warming appliance according to any one of <9> to <11>, wherein the basis weight of the water-absorbing polymer is in a dry state, preferably 20 g / m 2 Above, more preferably 25 g / m 2 Above, and further preferably 30 g / m 2 Above, again, preferably 100 g / m 2 Below, more preferably 80 g / m 2 Below, more preferably 60 g / m 2 the following. <13> The warming appliance according to any one of <1> to <12>, wherein the warming appliance has a sheet outside the container, and the cooling agent is held on the sheet. <14> The warming appliance according to <13>, in which the cooling agent is preferably 0.15 g / m in plan view area relative to the area of the heating portion. 2 The above is maintained, more preferably 0.5 g / m 2 Carrying the above, and more preferably 0.8 g / m 2 The above is maintained, and more preferably, 15 g / m 2 Keep it below, more preferably at 10 g / m 2 Keep it below, and more preferably 8 g / m 2 Keep the following. <15> The heating device according to any one of <1> to <14>, wherein the above-mentioned containment system is formed using a first sheet, and the first sheet has a better air permeability as measured in accordance with JIS P8117 More than 10 seconds / 100 mL, more preferably more than 50 seconds / 100 mL, even more preferably more than 100 seconds / 100 mL, particularly preferably 200 seconds / 100 mL or more, and more preferably 8,000 seconds / 100 mL or less , More preferably 4,000 seconds / 100 mL or less, further more preferably 2,500 seconds / 100 mL or less, particularly preferably 1,500 seconds / 100 mL or less, and more preferably 10 seconds / 100 mL and 8,000 seconds / 100 mL or less , More preferably more than 50 seconds / 100 mL and less than 4,000 seconds / 100 mL, even more preferably more than 100 seconds / 100 mL and 2,500 seconds / 100 mL or less, particularly preferably more than 200 seconds / 100 mL and 1,500 seconds / 100 mL or less. <16> The warming appliance according to any one of <1> to <15>, wherein the above-mentioned containment system is formed using a first sheet, and the first sheet has a better moisture permeability measured in accordance with JIS Z0208 800 g / m 2 ・ More than 24hr, more preferably 1000 g / m 2 ・ More than 24hr, more preferably 1300 g / m 2 ・ More than 24hr, more preferably 8000 g / m 2 ・ Below 24hr, more preferably 6000 g / m 2 ・ Less than 24hr, more preferably 5000 g / m 2 ・ Below 24hr. <17> The warming appliance according to <15> or <16>, wherein the storage body includes a second sheet disposed at a position opposite to the first sheet, and the cooling agent is maintained at a relatively low temperature. The second sheet is further outside. <18> The warming appliance according to <17>, wherein the air permeability of the second sheet is lower than that of the first sheet, and the air permeability of the second sheet is preferably set. 5,000 seconds / 100 mL or more, more preferably 8,000 seconds / 100 mL or more, more preferably 150,000 seconds / 100 mL or less, and even more preferably 100,000 seconds / 100 mL or less. <19> The heating device according to <17> or <18>, in which the moisture permeability of the second sheet is preferably 750 g / m 2 ・ Less than 24hr, more preferably 540 g / m 2 ・ Below 24hr. <20> The warming appliance according to any one of <1> to <19>, wherein the storage body is preferably stored in a bag body having air permeability. <21> The heating device according to any one of <1> to <20>, which is used as an eye mask. <22> A method for increasing the amount of tears, which promotes tear secretion by wearing the warming device according to any one of <1> to <20> to the eyes. [Examples] Hereinafter, the present invention will be described in more detail with reference to examples. However, the scope of the present invention is not limited by the embodiment.・ Examples and Comparative Examples [Preparation of Aqueous Powder Water Dispersion] Prepare the oxidized metal, carbon component, water, reaction accelerator, pH control agent, and A thickening agent and the like were used to prepare an exothermic powder water dispersion (exothermic composition) in the following steps. An aqueous solution is prepared by dissolving a thickener in water, and then dissolving a reaction accelerator and a pH control agent. On the other hand, prepare a powder premixed with oxidizing metal and carbon components, put the premixed powder into an aqueous solution, and stir it at 150 rpm for 10 minutes with a disc turbine type stirring blade to obtain a slurry-like heat. Powder water dispersion. The types, product names, and manufacturers of the oxidized metal, carbon component, water, reaction accelerator, and tackifier are shown below. Oxidized metal: iron powder (iron powder RKH, manufactured by DOWA IP CREATION Co., Ltd.) with an average particle diameter of 45 μm carbon component: activated carbon (CARBORAFIN, manufactured by Japan Enviro Chemicals Co., Ltd.) with an average particle diameter of 40 μm thickener: three Xanthan (Echo Gum BT, manufactured by DSP Wuxie Food & Chemical Co., Ltd.) Molecular weight 2,000,000 Water: tap water pH control agent 1: Tripotassium phosphate (manufactured by Mishan Chemical Industry Co., Ltd.) pH control agent 2: 48% potassium hydroxide Solution (manufactured by Kanto Chemical Co., Ltd.) Reaction accelerator: Sodium chloride (Sodium chloride from Japan Pharmacy, manufactured by Tomita Pharmaceutical Co., Ltd.) [Table 1] <Example 1> [Production of heating part] Using PE (polyethylene, polyethylene) laminated paper (manufactured by NITTOKU Co., Ltd.) as a base material layer, 1.8 g of an aqueous heating powder dispersion was coated to a thickness of approximately 3 mm. Apply to 24.01 cm 2 (4.9 cm × 4.9 cm) of the substrate layer. Then, 0.072 g of a water-absorbent polymer (spherical shape, average particle diameter of 300 μm, Aqualic CAW-151, manufactured by Nippon Catalysts Co., Ltd.) was spread on the coating of the above-mentioned heating powder water dispersion to a thickness of approximately 0.5 mm Surface (basic weight 30 g / m 2 ). Next, use 4.9 cm × 4.9 cm wrinkled paper (basic weight 63 g / m 2 , Manufactured by Great Showa Paper Industry Co., Ltd.) as a water-absorbent sheet, which is laminated on the above-mentioned water-absorptive polymer spraying section and integrated, thereby producing a heat generating section. [Production of the heating element] The heating elements obtained by the above method were put into use such that the water-absorbing sheet became the first container sheet side and the base material layer became the second container sheet side. Polyethylene porous sheet with an air permeability of 350 seconds / 100 mL was used as the container of the first container sheet (6.5 cm × 6.5 cm: of which the second container sheet was non-breathable), and the peripheral portion Hermetically sealed to produce a heating element. [Maintenance of cooling agent] Using ethanol as a solvent, the mass ratio of l-menthol and eucalyptus oil was 8:21 (l-menthol: 10.3% by mass, eucalyptus oil: 26.9% by mass, cooling agent; 29.1%) to prepare a cooling agent solution. Second, prepare absorbent paper (basis weight 35 g / m 2 ), The prepared 27.5 mg cooling agent solution was applied to the absorbent paper so that the amount of the cooling agent remaining was 8 mg. Thereafter, ethanol was evaporated. Furthermore, when 27.5 mg of the above-mentioned cooling agent solution is coated, each piece of absorbent paper, that is, each heating body, will maintain 2.8 mg of menthol and 7.4 mg of eucalyptus oil. In addition, since 70% by mass of eucalyptus leaf oil is 1,8-eucalyptin, as a cooling agent, the total amount is 8 mg. [Manufacturing of Warming Apparatus] The absorbent paper holding the cooling agent was laminated to the outer side surface of the second container sheet of the produced heating element with an adhesive. Secondly, for non-woven fabrics with hot air (air permeability is 1 second / 100 mL, 30 g / m 2 ) Into an outer bag (7.5 cm x 7.5 cm), ready to be used on one side of the perimeter with a width of 1 cm x a length of 4 cm and 100 g / m 2 A person coated with a quantity of adhesive to cover the release paper is put into the outer bag, and a heating body with a water-absorbing paper is placed thereon, and the peripheral portion is hermetically sealed to form a heating device. Prior to the evaluation described below, the heating device was always placed in an oxygen barrier bag. Furthermore, a series of operations are performed under a nitrogen stream. <Example 2> A heating device was produced in the same manner as in Example 1 except that the cooling amount (mg) was adjusted so as to have the configuration shown in Table 2. <Example 3> Except the use of a porous polyethylene sheet having an air permeability of 500 seconds / 100 mL as the first container sheet, and adjusting the water-dispersion powder of the heating powder so as to have the structure shown in Table 2. A heating device was produced in the same manner as in Example 1 except for the coating amount (g) and the cooling amount (mg). <Example 4> A synthetic paper having an air permeability of 20 seconds / 100 mL was used as the first container sheet, and the basis weight of the water-absorptive polymer (g / m 2 ), Except for the coating amount (g) of the heating powder water dispersion and the cooling amount (mg), a heating device was produced in the same manner as in Example 1. <Comparative Example 1> Except the use of a polyethylene porous sheet having an air permeability of 2500 seconds / 100 mL as the first container sheet, and adjusting the water-dispersed heating powder so as to have the configuration shown in Table 2 A heating device was produced in the same manner as in Example 1 except for the coating amount (g) and the cooling amount (mg). The obtained heating apparatus was measured and evaluated as shown below. The results are shown in Table 2.・ Measurement of <volatilization amount of cooling agent> First, prepare a 15 cm x 25 cm polyfluoride resin gas trap bag (Tedlar (trademark registration) bag) containing air sufficient for the oxidation reaction of the heating element. (Manufactured by DuPont), one end of the gas trap bag is connected to an air supply source, and the front end of the other end of the outlet or the pipe body connected to the outlet is immersed in ethanol. Next, the warming device holding the cooling agent was taken out from the oxygen barrier bag, placed in the gas trap bag, and then placed on a heating plate set at 35 ° C for 30 minutes. While being placed on the hot plate, air is allowed to flow in from the air supply source into the gas trapping bag at a fixed speed (100 mL / min), and air is ejected from the spouting port or the other end of the gas trapping bag. The front end of the tube connected to the outlet is discharged, thereby trapping the cooling agent emitted from the heating element into ethanol. In addition, in order to properly discharge the air flowing into the gas trapping bag, a heavy object is carried on the gas trapping bag, and the surrounding of the gas trapping bag is insulated by a heat insulating material, so as to maintain the heating plate. Perform heating. After being left for 30 minutes, the heating element was taken out from the gas trapping bag, and the gas trapping bag was washed with ethanol. The ethanol used for the washing was also captured and added up to the amount of the cooling agent. The analysis of the captured amount of the cooling agent was performed by gas chromatography (Agilent 6890N, manufactured by Agilent Technologies Co., Ltd.). These operations are all carried out under atmospheric pressure. In addition, since two heating elements are used for the heating device of the eye mask type, the amount of the cooling-off agent of the heating device is twice the amount measured for one heating element. <Cumulative steam amount> The measurement was performed using the device 30 shown in FIG. 9. The heating device taken out of the oxygen barrier bag was placed in the measurement chamber 31 with the surface of the heating body on the skin side (the first container sheet) facing upward, and a metal ball (mass of 4.5 g) The thermometer 38 is placed thereon for measurement. In this state, the dehumidified air is introduced from the lower part, and the difference between the absolute humidity before and after the air flows into the measurement chamber 31 is obtained based on the temperature and humidity measured by the inlet temperature hygrometer 34 and the outlet temperature hygrometer 36. The flow rate measured by the inlet flow meter 35 and the outlet flow meter 37 is used to calculate the amount of water vapor released by the heating device. The cumulative amount of steam is the total amount measured starting from the point when the warming appliance was taken out of the oxygen barrier bag, until 10 minutes later. <Surface Maximum Temperature> The measurement of the maximum surface temperature of the heating device was performed using the device 30 shown in FIG. 7. That is, at a measurement ambient temperature of 30 ° C (30 ± 1 ° C), the heating device taken out of the oxygen barrier bag is placed so that the surface of the heating element (the first container sheet) on the skin side faces upward. In the measurement room 31, a thermometer 38 with a metal ball (4.5 g in mass) is placed above the area where the heating part is located in a top view of the heating device, and the measurement is performed. The highest temperature (° C) on the surface of the heating appliance is taken as the measured value. The cumulative steam amount (mg) is taken as the vertical axis, and the maximum surface temperature (° C) is taken as the horizontal axis, and the graph of FIG. 10 is drawn. <Tear secretion volume> With the increase of tear secretion volume, the stability of tear fluid increases, and the time until tear layer breaks (RBUT) is prolonged. The TSAS (Tear Stability Analysis System) mode of Auto Ref-Topographer RT-7000 (TOMEY CORPORATION; Japan) was used to continuously measure the thickness of the subject and the tear layer at 1 second intervals. The shape of the inner eye surface (tomography). The time change of the shape of the eye surface was regarded as the change in the thickness of the tear layer, and the time (seconds) from when the eyes were opened until the tear layer was broken was calculated as the RBUT, which was used as an evaluation index of tear stability. Ten minutes before using a warming device, RBUT was measured to investigate changes in tear secretion. The measurement after using the heating device was performed 1 minute and 10 minutes after removing the heating device, and it was investigated whether the RBUT was prolonged relative to the time before using the heating device.・ Evaluation Let 3 senior functional inspectors wear each heating device for 10 minutes, and then discuss and determine which level is equivalent to the following evaluation criteria. <Comfortable warmth> 5: Feeling very comfortable warmth 4: Feeling very comfortable warmth 3: Feeling comfortable warmth 2: Slightly feeling warmth 1: There is very little feeling of warmth <Eye discomfort ＞ 5: Feeling has been fully improved 4: Feeling has improved better 3: Feeling has improved 2: Not too feeling has improved 1: Hardly any improvement [Table 2] In Examples 1 to 4, it was confirmed that after using the heating device for 10 minutes, the RBUT was extended to more than 10 seconds after 1 minute or 10 minutes. As the amount of tear secretion increased, the stability of tear fluid increased.

10‧‧‧發熱部10‧‧‧Fever

11‧‧‧發熱層11‧‧‧ heating layer

13‧‧‧基材層13‧‧‧ substrate layer

20‧‧‧收容體20‧‧‧Container

20a‧‧‧第一收容體片材20a‧‧‧First container sheet

20b‧‧‧第二收容體片材20b‧‧‧Second container sheet

21‧‧‧被氧化性金屬21‧‧‧oxidized metal

22‧‧‧碳成分22‧‧‧carbon composition

23‧‧‧吸水性聚合物23‧‧‧ Water-absorbing polymer

30‧‧‧裝置30‧‧‧ device

31‧‧‧測定室31‧‧‧Measurement Room

32‧‧‧流入路徑32‧‧‧ inflow path

33‧‧‧流出路徑33‧‧‧ Outflow path

34‧‧‧入口溫濕度計34‧‧‧Inlet Temperature and Hygrometer

35‧‧‧入口流量計35‧‧‧Inlet flowmeter

36‧‧‧出口溫濕度計36‧‧‧Export Temperature and Hygrometer

37‧‧‧出口流量計37‧‧‧outlet flowmeter

38‧‧‧溫度計(熱敏電阻)38‧‧‧ Thermometer (Thermistor)

50‧‧‧溫熱器具50‧‧‧ warming appliances

51‧‧‧本體部51‧‧‧Body

52‧‧‧掛耳部52‧‧‧Mounting ears

53‧‧‧袋體53‧‧‧ bag body

53A‧‧‧凹槽部53A‧‧‧Groove part

53B‧‧‧凹槽部53B‧‧‧Groove part

54‧‧‧孔54‧‧‧hole

55‧‧‧第一袋體片材55‧‧‧The first bag body sheet

56‧‧‧第二袋體片材56‧‧‧Second bag body sheet

100‧‧‧發熱體100‧‧‧heating body

102‧‧‧吸水性片材102‧‧‧ absorbent sheet

103‧‧‧基材103‧‧‧ Substrate

212‧‧‧片材212‧‧‧sheet

301‧‧‧於塗敷槽301‧‧‧ in the coating tank

302‧‧‧發熱粉體水分散物302‧‧‧Heat powder water dispersion

303‧‧‧攪拌器303‧‧‧Blender

304‧‧‧泵304‧‧‧ pump

305‧‧‧模頭305‧‧‧die

上述目的及其他目的、特徵及優點可藉由以下所述之較佳實施形態、及隨附於該等實施形態之以下圖式而進一步得到明確。 圖1係本實施形態之溫熱器具之俯視圖。 圖2係本實施形態之溫熱器具之分解立體圖。 圖3係模式性表示本實施形態中所使用之發熱體之俯視圖。 圖4係圖3之A-A剖視圖。 圖5係模式性表示本實施形態中所使用之發熱部之剖視圖。 圖6係對製造本實施形態中所使用之發熱部之方法進行說明之圖。 圖7係模式性表示本實施形態之發熱體之剖視圖。 圖8係模式性表示本實施形態之發熱體之變化例之剖視圖。 圖9係表示測定本實施形態之發熱體之表面最高溫度及累計蒸汽量的裝置之模式圖。 圖10係表示實施例及比較例之溫熱器具之累計蒸汽量(mg)與表面最高溫度(℃)的關係之曲線圖。The above-mentioned objects and other objects, features, and advantages can be further clarified by the preferred embodiments described below and the following drawings accompanying these embodiments. FIG. 1 is a plan view of a heating device according to this embodiment. FIG. 2 is an exploded perspective view of the heating device of this embodiment. FIG. 3 is a plan view schematically showing a heating element used in this embodiment. Fig. 4 is a sectional view taken along the line A-A in Fig. 3. FIG. 5 is a cross-sectional view schematically showing a heat generating portion used in this embodiment. FIG. 6 is a diagram illustrating a method of manufacturing a heat generating portion used in this embodiment. Fig. 7 is a cross-sectional view schematically showing a heating element according to this embodiment. FIG. 8 is a cross-sectional view schematically showing a modification example of the heating element according to this embodiment. FIG. 9 is a schematic diagram showing a device for measuring the maximum surface temperature and the accumulated steam amount of a heating element according to this embodiment. FIG. 10 is a graph showing the relationship between the cumulative steam amount (mg) and the maximum surface temperature (° C) of the heating devices of the examples and comparative examples.

Claims (14)

一種溫熱器具，其具備發熱體，該發熱體具有： 發熱部，其含有被氧化性金屬、碳成分及水；及 收容體，其一部分具有透氣性，且於內部收容上述發熱部；且 於上述溫熱器具保持有清涼化劑，並滿足以下條件： (條件) 於30℃之環境下， 上述發熱體開始發熱後每30分鐘之上述清涼化劑之揮散量為0.01 mg以上且0.5 mg以下，且 自上述發熱體開始發熱起至發熱開始後10分鐘為止所測定之累計蒸汽量(mg)與自上述發熱體開始發熱起算至發熱開始10分鐘後上述溫熱器具之表面最高溫度之上升溫度(℃)的比為5(mg/℃)以上。A warming appliance comprising a heating element, the heating element having: a heating element containing an oxidized metal, a carbon component, and water; and a container having a part of which is breathable and houses the heating element inside; and The warming device keeps the cooling agent and satisfies the following conditions: (Condition) Under the environment of 30 ° C, the volatility of the cooling agent every 30 minutes after the heating element starts to generate heat is 0.01 mg to 0.5 mg And the cumulative steam amount (mg) measured from the time when the heating element starts to heat up to 10 minutes after the start of heating The ratio (° C) is 5 (mg / ° C) or more. 如請求項1之溫熱器具，其中上述發熱體開始發熱後10分鐘為止所測定之累計蒸汽量為65 mg以上且3000 mg以下。The heating appliance of claim 1, wherein the cumulative amount of steam measured 10 minutes after the heating element starts to generate heat is 65 mg or more and 3000 mg or less. 如請求項1或2之溫熱器具，其中上述溫熱器具之表面最高達到溫度為35℃以上且70℃以下。If the heating appliance of item 1 or 2 is requested, the maximum temperature of the surface of the heating appliance is above 35 ° C and below 70 ° C. 如請求項1或2之溫熱器具，其中上述清涼化劑係選自由l-薄荷腦、dl-薄荷腦、d-樟腦、dl-樟腦、d-龍腦、dl-龍腦、及香葉草醇所組成之群之1種或2種以上。The warming appliance according to claim 1 or 2, wherein the cooling agent is selected from the group consisting of l-menthol, dl-menthol, d-camphor, dl-camphor, d-borneol, dl-borneol, and fragrant leaves One or more of the group consisting of oxalol. 如請求項1或2之溫熱器具，其中上述清涼化劑保持於上述發熱體之外部。The heating appliance as claimed in claim 1 or 2, wherein the cooling agent is kept outside the heating element. 如請求項1或2之溫熱器具，其中上述發熱部進而含有吸水聚合物。The heating device according to claim 1 or 2, wherein the heat generating portion further contains a water-absorbing polymer. 如請求項6之溫熱器具，其中上述吸水性聚合物之基重於乾燥狀態下，為20 g/m2 以上且100 g/m2 以下。The heating appliance according to claim 6, wherein the basis weight of the water-absorbing polymer is 20 g / m 2 or more and 100 g / m 2 or less in a dry state. 如請求項1或2之溫熱器具，其中上述溫熱器具於上述收容體之外部具有片材，且 於上述片材保持有上述清涼化劑。The heating device according to claim 1 or 2, wherein the heating device has a sheet outside the container and the cooling agent is held on the sheet. 如請求項1或2之溫熱器具，其中上述收容體係使用第1片材而形成，該第1片材之依據JIS P8117所測定之透氣度為超過10秒/100 mL且8,000秒/100 mL以下。If the heating device of claim 1 or 2, wherein the above-mentioned containment system is formed using the first sheet, the air permeability of the first sheet measured in accordance with JIS P8117 is more than 10 seconds / 100 mL and 8,000 seconds / 100 mL the following. 如請求項1或2之溫熱器具，其中上述收容體係使用第1片材而形成，該第1片材之依據JIS Z0208所測定之透濕度為800 g/m2 ・24hr以上且8,000 g/m2 ・24hr以下。For example, the heating device of claim 1 or 2, in which the above-mentioned containment system is formed using the first sheet, and the moisture permeability of the first sheet measured in accordance with JIS Z0208 is 800 g / m 2 · 24hr or more and 8,000 g / m 2・ 24hr or less. 如請求項9之溫熱器具，其中上述收容體具備配置於與上述第1片材對向之位置之第2片材，且 上述清涼化劑被保持於較上述第2片材更靠外側。The heating device according to claim 9, wherein the storage body includes a second sheet disposed at a position opposite to the first sheet, and the cooling agent is held further outside than the second sheet. 如請求項1或2之溫熱器具，其中上述清涼化劑相對於上述發熱部之俯視面積，按0.15 g/m2 以上且15 g/m2 以下而保持。For example, the heating device of claim 1 or 2, wherein the cooling surface of the cooling agent with respect to the planar area of the heating part is maintained at 0.15 g / m 2 or more and 15 g / m 2 or less. 如請求項1或2之溫熱器具，其係用作眼罩。The heating appliance as claimed in item 1 or 2 is used as an eye mask. 一種眼淚量之增加方法，其藉由將如請求項1至13中任一項之溫熱器具佩戴於眼睛而促進眼淚分泌。A method for increasing the amount of tears, which promotes tear secretion by wearing a warming device as in any one of claims 1 to 13 to the eyes.
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