JP2572621B2 - Sheet heating element - Google Patents

Sheet heating element

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Publication number
JP2572621B2
JP2572621B2 JP63023871A JP2387188A JP2572621B2 JP 2572621 B2 JP2572621 B2 JP 2572621B2 JP 63023871 A JP63023871 A JP 63023871A JP 2387188 A JP2387188 A JP 2387188A JP 2572621 B2 JP2572621 B2 JP 2572621B2
Authority
JP
Japan
Prior art keywords
heating element
sheet
water
air
activated carbon
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP63023871A
Other languages
Japanese (ja)
Other versions
JPH01201253A (en
Inventor
繁雄 箭原
喜基 松本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Pionics Ltd
Original Assignee
Japan Pionics Ltd
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Filing date
Publication date
Application filed by Japan Pionics Ltd filed Critical Japan Pionics Ltd
Priority to JP63023871A priority Critical patent/JP2572621B2/en
Publication of JPH01201253A publication Critical patent/JPH01201253A/en
Application granted granted Critical
Publication of JP2572621B2 publication Critical patent/JP2572621B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はシート状発熱体に関し、さらに詳細には繊維
状物質、鉄粉、活性炭、電解質および水を含有してなる
組成物をシート状に成形したシート状発熱体に関する。
Description: TECHNICAL FIELD The present invention relates to a sheet-like heating element, and more particularly, to a sheet-like composition comprising a fibrous substance, iron powder, activated carbon, electrolyte and water. The present invention relates to a molded sheet-shaped heating element.

〔従来の技術〕[Conventional technology]

従来から空気中の酸素と接触させることにより化学反
応を生ぜしめ、その反応熱の利用した発熱組成物は知ら
れており、例えば鉄、アルミニウムなどの金属粉を、反
応助剤である活性炭、無機電解質および水などと混合し
たもの、ならびに金属の硫化物または多硫化物の炭素物
質を混合したものなどがある。
Conventionally, a chemical reaction is caused by contact with oxygen in the air, and an exothermic composition using the reaction heat is known.For example, iron, aluminum or other metal powder is converted into a reaction aid such as activated carbon or inorganic. Examples include a mixture of an electrolyte and water, and a mixture of a metal sulfide or a polysulfide carbon substance.

これらの発熱組成物は発熱体として有効な発熱性能を
得るに必要な空気を供給しうる通気性のフィルムまたは
非通気性のフィルムに孔を設けて通気性を付与したフィ
ルムなどで作られた袋などに収納して発熱体とされ、採
暖具などとして実用に供されている。
These heat-generating compositions are bags made of a film having air permeability by providing holes in a breathable film or a non-breathable film capable of supplying air necessary for obtaining effective heat-generating performance as a heating element. It is housed in a heating element and is used as a warming tool.

これらの発熱体は使用の時点まで酸素非透過性の外袋
などに密封し、外気との接触を断って保存される。
These heating elements are sealed in an oxygen-impermeable outer bag or the like until the time of use, and are kept out of contact with the outside air.

〔発明が解決しようとする課題〕[Problems to be solved by the invention]

しかしながら、従来の発熱体は使用が簡単であるとい
う利点はあるが、その反面次のような欠点があった。
However, while the conventional heating element has the advantage of being easy to use, it has the following disadvantages.

すなわち、これらの発熱体を人体あるいは機械設備、
部品などの加熱、保温に用いた場合には、運動、振動な
どを受けているときのみならず静止状態においても発熱
組成物が重力で袋の下方に片寄り、形状変化による違和
感を生ずるほか、発熱特性自体も変化し、発熱量が低下
するという欠点があった。
In other words, these heating elements are
When used for heating and keeping heat of parts, the exothermic composition is biased below the bag by gravity, not only when it is receiving motion, vibration, etc., but also at rest, causing discomfort due to shape change, There is a disadvantage that the heat generation characteristic itself changes and the amount of heat generation decreases.

また、これらの発熱体は、その製造時点で形状、大き
さなどが決まるため、使用時にこれらの用途に応じて変
更することができないという不都合もあった。
In addition, since the shape and size of these heating elements are determined at the time of manufacture, there is also a disadvantage that the heating elements cannot be changed according to their use at the time of use.

〔課題を解決するための手段、作用〕[Means and actions for solving the problem]

本発明者等はこれらの欠点を改善すべく鋭意研究を続
けた結果、抄紙によりシート状としうることに着目し、
本発明を完成した。
The present inventors have conducted intensive research to improve these drawbacks, and as a result, have noticed that papermaking can be made into a sheet shape.
The present invention has been completed.

すなわち、本発明は少なくとも鉄粉、活性炭、電解質
および水に、繊維状物質を混合してなる組成物を抄紙に
よりシート状に成形してなることを特徴とするシート状
発熱体である。
That is, the present invention is a sheet-like heating element characterized in that a composition obtained by mixing a fibrous substance with at least iron powder, activated carbon, electrolyte and water is formed into a sheet by papermaking.

本発明において使用される繊維状物質は鉄粉、活性
炭、電解質および水などを保持するとともに組成物と空
気との接触効率をよくするための空隙を確保する。
The fibrous substance used in the present invention retains iron powder, activated carbon, electrolyte, water, and the like, and secures a void for improving the contact efficiency between the composition and air.

繊維状物質としては、天然繊維および合成繊維が使用
でき、その寸法には特に制限はないが、通常は、巾0.3m
m以下、長さ0.2〜25mm程度のものが用いられる。
As the fibrous substance, natural fibers and synthetic fibers can be used, and the dimensions thereof are not particularly limited.
m and a length of about 0.2 to 25 mm are used.

天然繊維物質としては、例えばパルプ、ビスコースレ
ーヨン、綿、麻、羊毛およびアスベストなど、また、合
成繊維物質としては、例えばポリアクリル、ポリエチレ
ン、ポリプロピレン、ポリ塩化ビニル、ポリ塩化ビニリ
デン、エチレン−酢酸ビニル共重合体、ポリエステル、
ポリアミドおよびポリビニルアルコールなどの繊維なら
びにこれらの混合物が用いられる。これらの中でもパル
プ、綿、ポリエチレン、ポリプロピレン、ポリアクリル
などの繊維が一般的に好ましい。
Examples of natural fiber materials include pulp, viscose rayon, cotton, hemp, wool, and asbestos, and examples of synthetic fiber materials include polyacryl, polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride, and ethylene-vinyl acetate. Copolymer, polyester,
Fibers such as polyamide and polyvinyl alcohol and mixtures thereof are used. Among these, fibers such as pulp, cotton, polyethylene, polypropylene, and polyacryl are generally preferred.

本発明で使用される鉄粉の種類には特に制限はない
が、例えば還元鉄、噴霧鉄および電解鉄などが挙げられ
る。その粒度は、通常は60mesh以下であり、このうち20
0mesh以下のものが50%以上含有されるものが好まし
い。
The type of iron powder used in the present invention is not particularly limited, and examples thereof include reduced iron, spray iron, and electrolytic iron. The particle size is usually less than 60 mesh, of which 20
It is preferable that the content of 0mesh or less is 50% or more.

活性炭は反応助剤および保水剤として使用され、例え
ば椰子殻炭、木粉炭、暦青炭、泥炭および亜炭などであ
る。活性炭の粒度としては、通常は、60mesh以下、好ま
しくは、140mesh以下のものが50%以上含有されるもの
である。
Activated carbon is used as a reaction aid and water retention agent, such as coconut shell charcoal, wood flour, calendar blue coal, peat and lignite. The particle size of the activated carbon is usually 60 mesh or less, preferably 140 mesh or less and 50% or more.

電解質としては、通常は、無機の塩類が用いられ、ア
ルカリ金属、アルカリ土類金属および重金属の硫酸塩、
炭酸塩、塩化物および水酸化物などである。これらの中
でも塩化物が好ましく、例えばNaCl,KCl,CaCl2,MgCl2,F
eCl2およびFeCl3などが挙げられる。
As the electrolyte, usually, inorganic salts are used, and alkali metal, alkaline earth metal and heavy metal sulfates,
Carbonates, chlorides and hydroxides. Among these, chlorides are preferable, for example, NaCl, KCl, CaCl 2 , MgCl 2 , F
eCl 2 and FeCl 3 .

本発明において、繊維状物質、鉄粉、活性炭、電解質
および水に、さらに保水剤としてゼオライト、けいそう
土、パーライト、バーミキュライトおよび吸水性樹脂な
どを混合してもよく、また、紙の抄造の際に用いるサイ
ズ剤、填料、歩留向上剤、着色剤および紙力増強剤など
の添加剤を併用してもよい。
In the present invention, zeolite, diatomaceous earth, perlite, vermiculite and a water-absorbing resin may be mixed as a water retention agent with the fibrous substance, iron powder, activated carbon, electrolyte and water. In addition, additives such as a sizing agent, a filler, a retention aid, a colorant, and a paper strength enhancer may be used.

本発明のシート状発熱体は、抄紙によってシート状と
されるが通常は、繊維状物質、活性炭、電解質およびそ
の他の添加物を水に混合撹はんして懸濁させ、その懸濁
液を濾過し、さらに、含水率が65wt%以下、好ましく
は、50wt%以下になるまで脱水してシート状に成形され
る。
The sheet-shaped heating element of the present invention is formed into a sheet by papermaking, and usually, a fibrous substance, activated carbon, an electrolyte and other additives are mixed and stirred in water to suspend the suspension. The mixture is filtered, and further dewatered until the water content becomes 65 wt% or less, preferably 50 wt% or less, to form a sheet.

懸濁液中で水に溶解しない固形物の割合は、通常は、
繊維状物質、鉄粉、活性炭、電解質および水の和を基準
とする懸濁液の総重量に対して、0.2〜20wt%、好まし
くは1〜15wt%とされる。
The proportion of solids that do not dissolve in water in the suspension is usually
It is 0.2 to 20% by weight, preferably 1 to 15% by weight, based on the total weight of the suspension based on the sum of the fibrous substance, iron powder, activated carbon, electrolyte and water.

また、それぞれの成分についての割合は、前記の懸濁
液の総重量に対して繊維状物質は0.02〜8wt%、好まし
くは0.2〜4wt%、鉄粉については、通常は0.1〜20wt
%、好ましくは0.5〜10wt%、活性炭については、0.01
〜12wt%、好ましくは0.1〜5wt%程度、電解質について
は、通常は水に溶解させて用いられるが、固形物換算で
0.2〜25wt%、好ましくは1〜15wt%程度とされる。
The ratio of each component is as follows: 0.02 to 8 wt%, preferably 0.2 to 4 wt% of the fibrous substance, preferably 0.1 to 20 wt% for iron powder, based on the total weight of the suspension.
%, Preferably 0.5 to 10% by weight.
1212 wt%, preferably about 0.1-5 wt%. As for the electrolyte, it is usually used by dissolving it in water.
The content is 0.2 to 25% by weight, preferably about 1 to 15% by weight.

次に、シート状発熱体の製造法の一例について具体的
に説明する。
Next, an example of a method for manufacturing a sheet-like heating element will be specifically described.

水に繊維状物質を懸濁させ、リファイナーなどで軽度
に叩解し、これに鉄粉、活性炭、電解質、保水剤、添加
剤などを加えて、撹はんして懸濁させ、抄紙機に通し
て、ワイヤーにて濾過し、吸引脱水後、キャンバスなど
に挟みプレスでさらに脱水し、厚さ、0.2〜10mm、好ま
しくは2〜8mm程度に成形することにより、含水率5〜6
5wt%、好ましくは20〜50wt%のシート状発熱体を得る
ことができる。
Suspend the fibrous substance in water, beat it gently with a refiner, add iron powder, activated carbon, electrolyte, water retention agent, additives, etc., stir to suspend and pass it through a paper machine. Then, after filtration with a wire, suction dehydration, sandwiched between canvases and the like, and further dehydrated with a press, and molded to a thickness of 0.2 to 10 mm, preferably about 2 to 8 mm, thereby obtaining a moisture content of 5 to 6
5 wt%, preferably 20 to 50 wt% of a sheet heating element can be obtained.

なお、この製造工程中において、鉄粉が空気中の酸素
と接触し酸化されるのを防止するために窒素、アルゴン
などの不活性ガス雰囲気でおこなうことが好ましい。
Note that, during this manufacturing process, it is preferable that the process be performed in an atmosphere of an inert gas such as nitrogen or argon in order to prevent the iron powder from contacting oxygen in the air and being oxidized.

このようにして得られたシート状発熱体は、そのま
ま、あるいは所望の大きさに裁断して人体、機械設備、
部品および食品などの加熱、保温に用いられる。
The sheet-like heating element thus obtained can be cut as it is or in a desired size for human body, mechanical equipment,
It is used for heating and keeping heat of parts and foods.

また、このシート状発熱体の成分の移行などによる被
保温物の汚染を防止するなどの目的で、必要に応じてこ
のシート状発熱体は通気性を有するフィルムによって被
覆するか、または、合成樹脂塗料などによって通気性被
膜を形成させるか、あるいは、発熱体の表面にさらに、
繊維状物質を抄き合わせることもできる。
If necessary, the sheet-shaped heating element may be covered with an air-permeable film, or a synthetic resin may be used, for example, to prevent contamination of the heat-insulated material due to migration of components of the sheet-shaped heating element. Either a breathable film is formed by paint or the surface of the heating element
Fibrous materials can also be combined.

第1図および第2図は、これらの被覆の状態を例示し
た断面図である。
FIG. 1 and FIG. 2 are cross-sectional views illustrating the state of these coatings.

第1図において、シート状発熱体1の両面を通気性フ
ィルム2で被覆し、周辺部3は接着剤による接着、また
は、熱融着によってシールされている。なお、通気性の
フィルムは片面のみでもよく、この場合には、他面に
は、非通気性のフィルムなどが用いられる。
In FIG. 1, both surfaces of a sheet-like heating element 1 are covered with a breathable film 2, and a peripheral portion 3 is sealed by bonding with an adhesive or by heat fusion. The air-permeable film may be on only one side, and in this case, a non-air-permeable film or the like is used on the other side.

通気性のフィルムとしては、例えば紙、不織布、微多
孔質膜およびこれらのフィルムに、さらに有孔プラスチ
ックフィルムをラミネートしたもの、あるいは紙または
不織布と無孔プラスチックフィルムをラミネートしたも
のに針、レーザーなどで微細な孔を設けたものが用いら
れる。
Examples of the breathable film include paper, non-woven fabric, microporous membrane, and a film obtained by laminating a perforated plastic film on these films, or a laminate of paper or non-woven fabric and a non-porous plastic film on a needle, a laser, or the like. The one provided with fine holes is used.

第2図において、シート状発熱体1の表面に接着層4
を部分的に設け、これに通気性のフィルム2が貼り合わ
されている。
In FIG. 2, an adhesive layer 4 is formed on the surface of the sheet-shaped heating element 1.
Is partially provided, and the breathable film 2 is bonded thereto.

これら被覆用の素材としては、発熱に必要な通気性を
有し、かつ、シート状発熱体の成分の移行によって被保
温物が汚染されることを防止しうるものであればよい。
Any material may be used as the material for covering as long as it has air permeability necessary for heat generation and can prevent the heat-retaining material from being contaminated by the transfer of components of the sheet-like heat generating element.

〔実施例〕〔Example〕

実施例1 窒素ガス雰囲気下において、バルブ3g、粒度200mesh
以下のものを80%を含む還元鉄粉20g、椰子殻活性炭7.5
g、NaCl 16gを溶解した水500mlに混合し、撹はん懸濁さ
せた。この懸濁液を直径110mmの濾紙を敷いたブフナー
型濾斗に流し込み吸引濾過して含水率約45wt%のシート
状物を得た。この物を遠心脱水により含水率約40wt%の
シート状発熱体とした。
Example 1 Under nitrogen gas atmosphere, valve 3g, particle size 200mesh
20g of reduced iron powder containing 80% of the following, coconut shell activated carbon 7.5
g and 16 g of NaCl were mixed in 500 ml of water and suspended by stirring. The suspension was poured into a Buchner funnel covered with filter paper having a diameter of 110 mm, and suction-filtered to obtain a sheet having a water content of about 45 wt%. This material was centrifugally dehydrated to obtain a sheet-shaped heating element having a water content of about 40% by weight.

得られたシート状発熱体の厚さは5mmであり、このも
のを酸素非透過性の外袋に密封した。
The thickness of the obtained sheet-like heating element was 5 mm, which was sealed in an outer bag impermeable to oxygen.

実施例2 実施例1でえられたシート状発熱体を外袋から取り出
して5×5cmに裁断し、室温20℃、相対湿度65%の空気
中にて発泡スチロール上で発熱させたところ、第3図に
示したように、5分後には発熱体の温度が80℃以上にな
り、実用上充分な発熱性能を有していた。
Example 2 The sheet-like heating element obtained in Example 1 was taken out of the outer bag, cut into 5 × 5 cm, and heated on styrofoam in air at room temperature of 20 ° C. and relative humidity of 65%. As shown in the figure, after 5 minutes, the temperature of the heating element became 80 ° C. or higher, and the heat generating performance was sufficient for practical use.

実施例3〜5 第1表に示すごとく、活性炭の割合を変えたほかは実
施例1と同様にして三種類のシート状発熱体を製造し
た。
Examples 3 to 5 As shown in Table 1, three types of sheet heating elements were produced in the same manner as in Example 1 except that the ratio of activated carbon was changed.

この発熱体をそれぞれ5×5cmに裁断し、室温20℃、
相対湿度65%の空気中にて発泡スチロール上で発熱させ
たところ、第4図に示したような発熱性能を得た。
Each of the heating elements was cut into 5 × 5 cm, and the room temperature was 20 ° C.
When heat was generated on styrofoam in air at a relative humidity of 65%, heat generation performance as shown in FIG. 4 was obtained.

実施例6〜8 実施例3と同様にして得られた三種類のシート上発熱
体をそれぞれ7.5×7.5cmに裁断し、片面に直径0.3mmの
通気孔330個を持つプラスチックフィルムを、他面に孔
を有しない非通気性のプラスチックフィルムをそれぞれ
重ね合わせて被覆し、その周辺を熱融着によりシールし
て第1図に示したと同様の形状のシート状発熱体を得
た。
Examples 6 to 8 Each of the three types of on-sheet heating elements obtained in the same manner as in Example 3 was cut into 7.5 × 7.5 cm, and a plastic film having 330 air holes with a diameter of 0.3 mm on one side was replaced with a plastic film on the other side. A non-air-permeable plastic film having no holes was superposed on each other and covered, and the periphery thereof was sealed by heat sealing to obtain a sheet-like heating element having the same shape as that shown in FIG.

この発熱体は室温20℃、相対温度65%の空気中で座布
団に挟んで発熱させたところ、第5図に示したように実
用上充分な発熱性能が得られた。また、発熱体の成分の
移行による座布団の汚染などは全く見られなかった。
When this heating element was heated by being sandwiched between cushions in air at a room temperature of 20 ° C. and a relative temperature of 65%, practically sufficient heating performance was obtained as shown in FIG. Also, no contamination of the cushion by the transfer of the components of the heating element was observed at all.

実施例9 実施例1と同様にして得られたシート状発熱体を7.5
×7.5cmに裁断した後、その両面に酢酸ビニル系接着剤
を直径4mmで10mm間隔に斑点状に付け、その上にガーレ
ー式透気度(ガーレー式透気度試験、JIS−P8117によ
る)が1400sec/100mlの多孔質膜シートを貼り合わせ
て、第2図に示したと同様のシート状発熱体を得た。
Example 9 A sheet-shaped heating element obtained in the same manner as in Example 1 was used for 7.5
After cutting to 7.5 cm, apply vinyl acetate adhesive on both sides in spots at intervals of 10 mm with a diameter of 4 mm. A sheet-like heating element similar to that shown in FIG. 2 was obtained by laminating a 1400 sec / 100 ml porous membrane sheet.

この発熱体を室温20℃、相対湿度65%の空気中にて発
泡スチロール上で発熱させたところ、第6図に示すよう
に実用上充分の発熱性能を有していた。
When this heating element was heated on styrofoam in air at room temperature of 20 ° C. and relative humidity of 65%, it had sufficient heat generation performance for practical use as shown in FIG.

〔発明の効果〕〔The invention's effect〕

本発明のシート状発熱体は、 従来の発熱体のように発熱組成物の移動による片寄り
を生じないため、安定した発熱性能が得られると共に、
人体装着時に違和感を生じない。
The sheet-shaped heating element of the present invention does not generate a bias due to the movement of the heating composition unlike the conventional heating element, and thus, a stable heating performance can be obtained,
Does not cause discomfort when worn on the human body.

シート状で柔軟性を有するため、機器類の加温におい
てタイトに装着しうる。
Since it is sheet-like and flexible, it can be mounted tightly when the equipment is heated.

シート状に成形されているため、粉末が飛散すること
がなく、被保温物の形状、大きさなどに合わせて任意に
裁断することもできる。
Since it is formed into a sheet, the powder is not scattered and can be arbitrarily cut according to the shape, size, etc. of the material to be kept warm.

など、数多くの優れた特徴を有している。 It has many excellent features.

【図面の簡単な説明】[Brief description of the drawings]

第1図および第2図はそれぞれ本発明のシート状発熱体
の断面図であり、第3図〜第6図はそれぞれ発熱性能を
示した図である。 図面の各番号は以下の通りである。 1……シート状発熱体、2……フィルム 3……周辺部、4……装着層
1 and 2 are cross-sectional views of the sheet-shaped heating element of the present invention, respectively, and FIGS. 3 to 6 are views each showing heat generation performance. The respective numbers in the drawings are as follows. 1. Sheet heating element 2. Film 3. Peripheral part 4. Mounting layer

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】少なくとも鉄粉、活性炭、電解質および水
に、繊維状物質を混合してなる組成物を抄紙によりシー
ト状に成形してなることを特徴とするシート状発熱体。
1. A sheet-shaped heating element comprising a composition obtained by mixing a fibrous substance with at least iron powder, activated carbon, electrolyte and water into a sheet by papermaking.
JP63023871A 1988-02-05 1988-02-05 Sheet heating element Expired - Fee Related JP2572621B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63023871A JP2572621B2 (en) 1988-02-05 1988-02-05 Sheet heating element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63023871A JP2572621B2 (en) 1988-02-05 1988-02-05 Sheet heating element

Publications (2)

Publication Number Publication Date
JPH01201253A JPH01201253A (en) 1989-08-14
JP2572621B2 true JP2572621B2 (en) 1997-01-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP63023871A Expired - Fee Related JP2572621B2 (en) 1988-02-05 1988-02-05 Sheet heating element

Country Status (1)

Country Link
JP (1) JP2572621B2 (en)

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