JPH06315498A - Heat generating body - Google Patents

Heat generating body

Info

Publication number
JPH06315498A
JPH06315498A JP13003393A JP13003393A JPH06315498A JP H06315498 A JPH06315498 A JP H06315498A JP 13003393 A JP13003393 A JP 13003393A JP 13003393 A JP13003393 A JP 13003393A JP H06315498 A JPH06315498 A JP H06315498A
Authority
JP
Japan
Prior art keywords
heat
iron powder
packaging material
heating
heating element
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.)
Granted
Application number
JP13003393A
Other languages
Japanese (ja)
Other versions
JP2853825B2 (en
Inventor
Junichi Kodama
順一 児玉
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP13003393A priority Critical patent/JP2853825B2/en
Publication of JPH06315498A publication Critical patent/JPH06315498A/en
Application granted granted Critical
Publication of JP2853825B2 publication Critical patent/JP2853825B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To provide a heat generating body, which can generates high temperature heat in a short time and consists of iron powder, a water retention material and a heat generating material containing moisture, stored in a packaging material. CONSTITUTION:A heat generating body consists of a heat generating material, which iron powder with a specific surface area higher than 400cm<2>/g is added to more than 50wt.% and generates heat by hydroxylation reaction and is contained in a packaging material composed of a material with Gurley permeability more than 5cc/cm<2> in a state that the heat generating material is filled in a density from 0.5 to 1.5g/cm<2>, or several pieces of the sand heat generating body are connected in width and length directions to be made possible to heat rapidly and to keep an objective at a high temperature. Consequently, it can heat the objective to a temperature higher than 80 deg.C within 15min., keep a wide heating area, and evenly heat an objective in a complex shape to a high temperature in a short time.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はガスや電気等のエネルギ
ーによらない化学反応により熱を発生し、短時間で最高
温度に達し、その発熱時の最高温度が80〜100℃と
なり、均一に被加熱物の加熱が行える発熱体に関するも
のである。
BACKGROUND OF THE INVENTION The present invention generates heat by a chemical reaction that does not depend on energy such as gas or electricity, reaches the maximum temperature in a short time, and the maximum temperature at the time of heat generation becomes 80 to 100 ° C. The present invention relates to a heating element capable of heating an object to be heated.

【0002】[0002]

【従来の技術】鉄粉と反応助剤(例えば活性炭、バーミ
キュライトおよび木粉等)に食塩水を含ませた素材を混
合してなる発熱組成物は使い捨てカイロとして一般に使
用されているがこれは人体の保温が目的であり最高温度
は低温火傷等の防止のために70℃前後に調整されてい
る。
2. Description of the Related Art An exothermic composition prepared by mixing iron powder and a reaction aid (for example, activated carbon, vermiculite, wood powder, etc.) with saline solution is generally used as a disposable body warmer. The maximum temperature is adjusted to around 70 ° C to prevent low temperature burns.

【0003】このために飲食物等の保温用途としては温
度が低く十分な効果が得られないものであった。
For this reason, the temperature is low and sufficient effect cannot be obtained for heat retention of foods and drinks.

【0004】またこの発熱体は粉末状のもので通気性包
装材料に充填して使用されるために垂直になっている部
分を加熱する場合には重力により下側に発熱体が偏り下
側のみ加熱され不均一な加熱になる課題があった。
This heating element is powdery and is used by filling it in a breathable packaging material. When heating a vertical portion, the heating element is biased to the lower side by gravity, and only the lower side is heated. There was a problem that it was heated and became non-uniform.

【0005】このような問題に対して特開平4―130
176号公報には発熱体を充填する包装材料の通気度が
0.1〜0.5CC/cm2・secの範囲の素材に収
納し、加熱温度を90〜100℃に高めた発熱包装袋が
提案されている。
To address such a problem, Japanese Patent Laid-Open No. 4-130
Japanese Patent No. 176 discloses a heat-generating packaging bag in which the packaging material for filling the heating element is housed in a material having an air permeability of 0.1 to 0.5 CC / cm 2 · sec and the heating temperature is raised to 90 to 100 ° C. Proposed.

【0006】しかしこの包装袋では最高温度が90℃程
度まで高くすることはできるものの最高温度に到達する
までの時間は50分以上もかかるために弁当、蒲焼き等
の飲食物の保熱はできても急速に高温に加熱する必要が
ある用途へは適用できないものであった。
However, in this packaging bag, although the maximum temperature can be raised to about 90 ° C., it takes more than 50 minutes to reach the maximum temperature, so that foods such as bento and kabayaki can be kept warm. Was not applicable to applications that require rapid heating to high temperatures.

【0007】また粉末状発熱体を包装材料に収納してな
る発熱体が加熱時に包装材料内部で偏り不均一な加熱に
なることを防止するために実開昭61―139219号
公報には使い捨てカイロの中身が偏ることを防止するた
めに包装材料を小袋に分ける方法が提案されている。
Further, in order to prevent the heating element formed by enclosing the powdery heating element in the packaging material from being unevenly heated inside the packaging material at the time of heating, Japanese Utility Model Laid-Open No. 61-139219 discloses a disposable body warmer. In order to prevent the contents of the bag from being biased, a method of dividing the packaging material into pouches has been proposed.

【0008】しかしこの方法では包装材料をいくつかに
分けても発熱素材を分割するために一個の仕切り部分へ
の発熱体の充填重量が少なくなり分けた包装材料内部で
は重力や少ない素材の分散により偏りが生じて均一に加
熱することはできず、製造の作業が煩雑になるばかりで
あり、十分な効果は得られないものであった。
However, in this method, even if the packaging material is divided into several pieces, the heat-generating material is divided, so that the weight of the heating element filled in one partition portion is reduced, and due to gravity and dispersion of less material inside the divided packaging material. Uneven heating was not possible and heating could not be performed uniformly, and the manufacturing process was complicated, and sufficient effects could not be obtained.

【0009】[0009]

【発明が解決しようとする課題】本発明は上記問題に鑑
み、鉄粉と金属ハロゲン化物、水および保水材からなる
発熱体が短時間で80℃以上の高温に達し、被加熱物を
均一に加熱することができる発熱体を提供するものであ
る。
SUMMARY OF THE INVENTION In view of the above problems, the present invention allows a heating element composed of iron powder, a metal halide, water and a water retaining material to reach a high temperature of 80.degree. The present invention provides a heating element that can be heated.

【0010】[0010]

【課題を解決するための手段】本発明は発明者らが上記
課題を解決するために種々の発熱剤の組成や条件につい
て検討を重ねた結果なされたもので、その要旨とすると
ころは比表面積が400cm2/g以上の鉄粉を全鉄粉
配合量の50重量%以上とし、保水材、金属ハロゲン化
物、水を含有し、大気中の酸素との接触により発熱する
発熱素材をガーレー式通気度が5CC/cm2・sec
以上の素材からなる包装材料に収納し、発熱素材を収納
した包装材料の片面の面積に対する発熱素材の重量が
0.5g/cm2から1.5g/cm2の範囲となるよう
に充填したことを特徴とする発熱体で、発熱素材を収納
した包装材料のサイズが幅100mm以下、長さ130
mm以下である発熱体および発熱素材を収納した発熱体
を幅方向、および長手方向に連続して形成したことを特
徴とする発熱体である。
Means for Solving the Problems The present invention has been made as a result of the inventors' extensive studies on the composition and conditions of various exothermic agents in order to solve the above-mentioned problems. Gurley-type aeration of heat-generating material containing iron powder of 400 cm 2 / g or more in an amount of 50% by weight or more of the total iron powder content, water-retaining material, metal halide, and water, and generating heat by contact with oxygen in the atmosphere Degree 5CC / cm 2 · sec
Packed in a packaging material made of the above materials, and filled so that the weight of the heating material per area of one side of the packaging material containing the heating material is in the range of 0.5 g / cm 2 to 1.5 g / cm 2. A heating element having a width of 100 mm or less and a length of 130.
A heating element having a heating element of mm or less and a heating element accommodating a heating material formed continuously in the width direction and the longitudinal direction.

【0011】本発明に使用する金属ハロゲン化物、保水
剤としては一般に使い捨てカイロに使用されている素材
が適用でき、例えば保水剤の種類は活性炭、ゼオライ
ト、バーミキュライト等の鉱物系のものや吸水性樹脂等
が使用でき、金属ハロゲン化物としてはNaCl、KC
l、CaCl2等の塩化物および臭化物が使用でき、特
に種類や配合比率は鉄粉の水酸化反応が最も効率よく行
えるものであれば特に限定されるものではない。
As the metal halide and the water retention agent used in the present invention, materials generally used in disposable body warmers can be applied. For example, the types of water retention agents include mineral-based materials such as activated carbon, zeolite, vermiculite and water-absorbent resin. Etc. can be used, and as the metal halide, NaCl, KC
1, chlorides and bromides such as CaCl 2 can be used, and the kind and blending ratio are not particularly limited as long as the hydroxylation reaction of the iron powder can be carried out most efficiently.

【0012】本発明で反応の主体となる鉄粉の種類は切
削屑の破砕粉、ガスおよび液体のアトマイズ鉄粉、鉄鉱
石やスケールの還元鉄粉または電解法で製造した純鉄粉
のいずれのものでも良く特に限定されないが比表面積が
400g/cm2以上となるように調整された鉄粉が配
合鉄粉の50重量%以上とするものである。
In the present invention, the type of iron powder which is the main constituent of the reaction is any of crushed powder of cutting waste, atomized iron powder of gas and liquid, reduced iron powder of iron ore and scale, or pure iron powder produced by the electrolytic method. Although not particularly limited, the iron powder adjusted to have a specific surface area of 400 g / cm 2 or more is 50% by weight or more of the blended iron powder.

【0013】比表面積が小さい鉄粉の使用や、比表面積
が大きくても全鉄粉の50重量%より少ない配合率の場
合には反応初期に酸化反応する反応面積が少なくなり、
発熱速度が遅く、最高温度までの到達時間が30分以上
かかり発熱特性としては好ましくないものとなる。
If an iron powder having a small specific surface area is used, or if the mixing ratio is less than 50% by weight of the total iron powder even if the specific surface area is large, the reaction area for the oxidation reaction at the initial stage of the reaction becomes small,
The heat generation rate is slow, and it takes 30 minutes or more to reach the maximum temperature, which is not preferable as heat generation characteristics.

【0014】従って本発明では反応速度を高めるために
鉄粉の比表面積を大きくし、かつその配合比率を多くす
ることにより短時間で高温まで昇温させるものである。
Therefore, in the present invention, in order to increase the reaction rate, the specific surface area of the iron powder is increased and the mixing ratio is increased to raise the temperature to a high temperature in a short time.

【0015】鉄粉の比表面積は表面の凹凸の状態、鉄粉
の粒径により変化するために表面状態や粒径を適宜選択
することにより調整できる。また、必要に応じて鉄粉の
種類や粒径の異なるものを組み合わせて使用することも
可能である。
The specific surface area of the iron powder varies depending on the state of surface irregularities and the particle size of the iron powder, and can be adjusted by appropriately selecting the surface state and particle size. Further, if necessary, it is possible to use a combination of iron powders having different types and particle sizes.

【0016】使い捨てカイロ等に使用される鉄粉の水酸
化反応の場合は包装材料の中心部分に集中して通気孔を
あけてこの孔の大きさや、分布状態を変えて最高温度を
70℃以下でかつ40℃以上の持続時間が長くなるよう
に調整している。
In the case of the hydroxylation reaction of iron powder used in disposable body warmers, etc., the maximum temperature is 70 ° C. or less by concentrating a ventilation hole in the center of the packaging material and changing the size and distribution state of this hole. And, it is adjusted so that the duration of 40 ° C or more becomes long.

【0017】この結果、持続時間を確保するために鉄粉
の反応は酸素の供給が律則となるために、発熱素材の最
大の反応速度が得られない状態で使用され、発熱素材の
反応性の違いは発熱特性に明瞭に現れないものである。
As a result, in order to ensure the duration, the iron powder reaction is used in a state in which the maximum reaction rate of the exothermic material cannot be obtained because the supply of oxygen is the rule, and the reactivity of the exothermic material is The difference is not clearly shown in the heat generation characteristics.

【0018】しかし、本発明ではより短時間で高温まで
昇温が可能なように包装材料の通気度を高め、鉄粉の反
応性が発熱反応の律則状態となり、発熱素材の反応性の
違いを顕著に発熱特性に反応させ素材の反応性を調整す
ることにより加熱温度の制御を可能とするものである。
However, in the present invention, the air permeability of the packaging material is increased so that the temperature can be raised to a high temperature in a shorter time, and the reactivity of the iron powder becomes a rule state of the exothermic reaction, resulting in a difference in the reactivity of the exothermic material. It is possible to control the heating temperature by significantly reacting with the exothermic characteristic to adjust the reactivity of the material.

【0019】一般の使い捨てカイロに使用されている包
装材料の通気孔部分の通気度は3〜4CC/cm2・s
ec程度であるがこの包装材料は全面に通気孔があるわ
けではなく中央部等の一部のみが通気面であり包材全体
としては0.4CC/cm2・sec程度まで低下す
る。
The air permeability of the ventilation hole portion of the packaging material used for general disposable body warmers is 3 to 4 CC / cm 2 · s.
Although it is about ec, this packaging material does not have ventilation holes on the entire surface and only a part such as the central portion is a ventilation surface, and the packaging material as a whole decreases to about 0.4 CC / cm 2 · sec.

【0020】しかし、本発明は包材全面が高い通気度を
有する素材とすることにより、短時間で高温加熱が達成
されるものである。
However, according to the present invention, high temperature heating can be achieved in a short time by using a material having a high air permeability over the entire surface of the packaging material.

【0021】このように通気度の調整は例えば不織布の
表面に有孔ポリエチレンフィルムをコーテイングし、開
孔部の形状や大きさを変えることにより可能であり、よ
り高い通気度は例えばヒートシールが可能な繊維素材か
らなる不織布を単独で使用することによって得られるも
のである。
As described above, the air permeability can be adjusted, for example, by coating a perforated polyethylene film on the surface of the non-woven fabric and changing the shape and size of the aperture, and a higher air permeability can be heat-sealed, for example. It is obtained by using a non-woven fabric made of various fiber materials alone.

【0022】さらに本発明における包装材料の通気度は
包材の片面が高い通気度を有する素材であれば残りの片
面の包材が非通気性素材で構成されていても発熱特性に
大きな影響を及ぼさず、片面を非通気性素材面を加熱面
に密着しても短時間で高温に加熱することができるもの
である。
Further, the air permeability of the packaging material according to the present invention has a great influence on the heat generation property as long as the one side of the packaging material is a material having a high air permeability even if the remaining one side packaging material is made of a non-air permeable material. Even if the non-breathable material surface is brought into close contact with the heating surface on one side, it can be heated to a high temperature in a short time.

【0023】このような非通気性素材としては例えばア
ルミシール素材、ポリ塩化ビニリデンコート処理素材ま
たは樹脂コーテイングした包装材料が使用可能である。
As such a non-breathable material, for example, an aluminum seal material, a polyvinylidene chloride coated material or a resin coated packaging material can be used.

【0024】しかし、このように非常に反応性が優れた
発熱素材を高通気度包材に充填した場合でも発熱体を包
材内に高密度で充填した場合には発熱体の表面から内部
まで酸素が浸透して反応するまでに時間がかかり短時間
に最高温度まで昇温することができなくなる。
However, even if the highly air-permeable packaging material is filled with the highly reactive heat-generating material as described above, if the heating elements are packed in the packaging material at a high density, from the surface to the inside of the heating element. It takes time for oxygen to permeate and react, and it becomes impossible to raise the temperature to the maximum temperature in a short time.

【0025】充填密度が小さい場合は酸素が発熱体内部
まで容易に浸透し短時間で高温まで昇温されるが温度の
低下も速く、包材内部で発熱体の粉末が偏り全面が均一
に加熱できなくなる。
When the packing density is low, oxygen easily permeates into the heating element and the temperature rises to a high temperature in a short time, but the temperature drops quickly, and the powder of the heating element is biased inside the packaging material to uniformly heat the entire surface. become unable.

【0026】このことから本発明では包材片面のサイズ
に合わせて適当量充填することにより均一にかつ短時間
で高温に加熱し、一定時間高温に保持する発熱特性を有
するものである。
From the above, the present invention has a heat generation characteristic of uniformly heating in a short time and keeping it at a high temperature for a certain time by filling an appropriate amount according to the size of one surface of the packaging material.

【0027】また、発熱体を充填する包装材料のサイズ
が大きい場合には被加熱物が平滑で水平な状態で加熱で
きる場合には容易に均一加熱できるが、タイヤ等のよう
に曲面を有している場合や加熱面が垂直になっている場
合には下側に発熱素材が偏り発熱体が偏っている部分は
加熱され、空間部分はほとんど加熱されず加熱むらが大
きくなる。
Further, when the size of the packaging material for filling the heating element is large, if the object to be heated can be heated in a smooth and horizontal state, uniform heating can be easily carried out, but it has a curved surface such as a tire. When the heating surface is vertical or when the heating surface is vertical, the heating material is biased to the lower side and the heating element is biased to the heated portion, and the space portion is hardly heated, resulting in large heating unevenness.

【0028】このために本発明では発熱体の充填する包
装材料のサイズを幅100mm以下、長さ130mm以
下とし、これより大きな加熱面積が必要な場合には発熱
素材を充填した包装材料を幅方向および長手方向に必要
なだけ連結することにより被加熱物全面を均一にかつ高
温に加熱するものである。
For this reason, in the present invention, the size of the packaging material filled with the heating element is 100 mm or less in width and 130 mm or less in length, and when a heating area larger than this is required, the packaging material filled with the heating material is applied in the width direction. And the entire surface of the object to be heated is heated uniformly and at a high temperature by connecting as much as necessary in the longitudinal direction.

【0029】以下に本発明の限定理由を述べる。鉄粉の
比表面積の増加は反応界面を多くし、反応速度の増加、
最高温度の上昇となる。
The reasons for limitation of the present invention will be described below. Increasing the specific surface area of iron powder increases the number of reaction interfaces, increasing the reaction rate,
The maximum temperature rises.

【0030】また、鉄粉は単一の種類ではなく他の種類
の鉄粉や粒度分布の異なる鉄粉と混合して使用されるこ
とがあり比表面積が大きい鉄粉でも全使用鉄粉中の重量
割合が50重量%より小さい場合は反応性が低下する。
Further, the iron powder is not a single type but may be used as a mixture with another type of iron powder or an iron powder having a different particle size distribution. When the weight ratio is less than 50% by weight, the reactivity decreases.

【0031】このことから比表面積が大きい鉄粉を多く
使用することにより短時間で高温に加熱することができ
るようにしたもので15分以内に80℃以上に加熱する
条件として鉄粉の比表面積を400cm2/g以上でか
つ鉄粉の配合率を50重量%以上とした。
Therefore, by using a large amount of iron powder having a large specific surface area, it is possible to heat to a high temperature in a short time. The specific surface area of the iron powder is set to 80 ° C. or more within 15 minutes. Was 400 cm 2 / g or more and the blending ratio of iron powder was 50% by weight or more.

【0032】包材の通気度が5CC/cm2・secよ
り小さい場合には鉄粉の水酸化反応が酸素の供給律則と
なり昇温速度、最高温度ともに低下し、素材の反応速度
が抑制される。
When the air permeability of the packaging material is less than 5 CC / cm 2 · sec, the hydroxylation reaction of the iron powder becomes the oxygen supply law and both the temperature rising rate and the maximum temperature decrease, and the reaction rate of the material is suppressed. It

【0033】この結果、素材の最大の反応速度が得られ
ず短時間で高温に加熱することができなくなる。包材通
気度が5CC/cm2・sec以上であれば反応の律則
が鉄粉の酸化反応となり素材の最大の反応状態が得られ
るために本発明では包材通気度を5CC/cm2・se
c以上としたものである。
As a result, the maximum reaction rate of the material cannot be obtained, and it becomes impossible to heat it to a high temperature in a short time. When the packaging material air permeability is 5 CC / cm 2 · sec or more, the law of reaction is the oxidation reaction of the iron powder and the maximum reaction state of the material is obtained. Therefore, in the present invention, the packaging material air permeability is 5 CC / cm 2 ·. se
c or more.

【0034】また鉄粉の反応律則の場合、包材内部に発
熱素材を多く充填すると発熱体の高温での持続時間は長
くなるが発熱体の表面のみが優先的に発熱反応し、中心
部の発熱が遅くなるために発熱体全体としては温度の上
昇速度が遅くなる。
Further, in the case of the reaction law of iron powder, if a large amount of heat-generating material is filled inside the packaging material, the duration of the heat-generating element at high temperature becomes longer, but only the surface of the heat-generating element reacts preferentially with heat, and the central part As a result, the rate of temperature rise of the heating element as a whole slows down.

【0035】このことから本発明では発熱素材重量と充
填している包材の片面の面積の比率から求めた充填密度
を1.5g/cm2を上限とした。
From the above, in the present invention, the upper limit of the packing density obtained from the ratio of the weight of the exothermic material and the area of one side of the packing material is 1.5 g / cm 2 .

【0036】一方充填密度が小さい場合には昇温速度は
大きくなるが包材内部で偏りを生じて発熱体と接触して
いない部分の加熱が行われなくなること、および高温で
の保持時間が短くなるため0.5g/cm2の充填密度
を下限とした。
On the other hand, when the packing density is low, the rate of temperature rise is high, but the inside of the packaging material is biased so that the portion not in contact with the heating element is not heated, and the holding time at high temperature is short. Therefore, the lower limit was the packing density of 0.5 g / cm 2 .

【0037】さらに発熱素材を充填シールしている包材
のサイズが大きくなると包材内部での素材の偏りが大き
くなり均一な加熱ができなくなる。
Furthermore, if the size of the packaging material that fills and seals the heat-generating material becomes large, the deviation of the material inside the packaging material becomes large and uniform heating cannot be performed.

【0038】被加熱物の加熱面が平滑で水平な状態で加
熱を行う場合には比較的均一に加熱できるが凹凸形状を
有している場合や垂直部を加熱する場合には発熱剤を収
納している包材が大きければ大きいほど発熱素材が偏り
不均一な加熱となる。
When the heating surface of the object to be heated is smooth and horizontal, it can be heated relatively uniformly, but when it has an uneven shape or when heating the vertical portion, a heating agent is stored. The larger the packaging material is, the more unevenly the heating material becomes, resulting in uneven heating.

【0039】このことから発熱素材を充填する包材のサ
イズは小さいほど均一加熱が可能であるがあまり小さす
ぎる場合には包材内に発熱素材を充填するときに詰まり
等のトラブルが発生し易く、作業性を悪化するために発
熱素材を充填する上限サイズを幅100mm、長さ13
0mmとした。
From this fact, the smaller the size of the packaging material filled with the heat generating material is, the more uniform heating is possible. However, if the packaging material is too small, problems such as clogging when filling the packaging material with the heat generating material are likely to occur. , The upper limit size for filling the heat generating material is 100 mm in width and 13 in length to deteriorate workability.
It was set to 0 mm.

【0040】また、被加熱物の加熱面が包材の充填サイ
ズより大きい場合には幅方向と長手方向に充填した発熱
体をいくつか連続して使用することにより大きな加熱面
を有する発熱体が製造可能となり、安定して均一な加熱
ができるようになる。
When the heating surface of the object to be heated is larger than the packing size of the packaging material, a heating element having a large heating surface can be obtained by continuously using several heating elements packed in the width direction and the longitudinal direction. Manufacture becomes possible and stable and uniform heating becomes possible.

【0041】このように発熱体を連続化した場合には必
要に応じてはシール部分に両面テープ等を設置して被加
熱物に固定することによりずれ防止をはかることもでき
る。
When the heating element is made continuous as described above, it is possible to prevent displacement by installing a double-sided tape or the like on the sealing portion and fixing it to the object to be heated, if necessary.

【0042】この結果、本発明の発熱体は短時間で高温
に昇温可能で必要に応じて大きく、複雑形状を有する被
加熱物を均一に加熱することができる。以下に本発明に
ついて実施例にもとづいて説明する。
As a result, the heating element of the present invention can raise the temperature to a high temperature in a short time, and can heat a large object having a complicated shape uniformly as needed. The present invention will be described below based on examples.

【0043】[0043]

【実施例】【Example】

【0044】[0044]

【実施例1】鉄鉱石を還元して得られた還元鉄粉を使用
し、粒度を調整して比表面積300、400、500、
600cm2/gとし、その鉄粉を全使用鉄粉に対して
30〜100%まで配合率を変えて、残りの鉄粉は比表
面積が300cm2/gの鋳鉄粉を使用した。
Example 1 A reduced iron powder obtained by reducing iron ore was used, and the particle size was adjusted to obtain a specific surface area of 300, 400, 500,
The iron powder was set to 600 cm 2 / g, the mixing ratio of the iron powder was changed to 30 to 100% with respect to the total iron powder used, and the remaining iron powder was a cast iron powder having a specific surface area of 300 cm 2 / g.

【0045】吸水助剤に珪藻土、活性炭、バーミキュラ
イトからなる素材に水分を22重量%含水させ包材の通
気度を0.2〜8CC/cm2・secまで変えて幅1
00mm、長さ130mmの両面通気の状態の包装材料
に充填密度1.0g/cm2としてアルゴン置換ボック
ス内で充填して、脱気シールして一昼夜保存した後に厚
さ15mmのゴム盤に水平に置いてゴムと発熱体の中心
部の最高温度と最高温度になるまでの昇温時間および8
0℃以上の高温保持時間を測定した。
A material consisting of diatomaceous earth, activated carbon and vermiculite as a water absorption aid is made to contain 22% by weight of water, and the air permeability of the packaging material is changed to 0.2 to 8 CC / cm 2 · sec and the width is 1
It is filled in a packing material of 00 mm in length and 130 mm in length with both sides ventilated at a packing density of 1.0 g / cm 2 in an argon substitution box, degassed and sealed, and stored horizontally for 15 days in a rubber plate with a thickness of 15 mm. Put the maximum temperature of the rubber and the center of the heating element and the temperature rise time to reach the maximum temperature and 8
A high temperature holding time of 0 ° C. or higher was measured.

【0046】その結果、第1表に示すように包材の通気
度が5CC/cm2・sec以上の場合、鉄粉の比表面
積が400cm2/gより小さいか比表面積が400c
2/g以上の鉄粉の配合比率が50重量%より小さい
場合には最高温度が80℃以下と低く、最高温度までの
昇温時間が20分以上かかり急速高温加熱はできなかっ
た。
As a result, as shown in Table 1, when the air permeability of the packaging material is 5 CC / cm 2 · sec or more, the specific surface area of the iron powder is smaller than 400 cm 2 / g or the specific surface area is 400 c.
When the mixing ratio of the iron powder of m 2 / g or more was less than 50% by weight, the maximum temperature was as low as 80 ° C. or less, and the temperature rising time to the maximum temperature was 20 minutes or more, and rapid high temperature heating could not be performed.

【0047】しかし比表面積が400cm2/g以上で
配合比率が50重量%以上の場合には14分以内に82
℃以上の最高温度まで加熱され、比表面積の増加および
鉄粉の配合比率の増加により昇温時間は短くなり、最高
温度は95℃まで達した。
However, when the specific surface area is 400 cm 2 / g or more and the compounding ratio is 50% by weight or more, 82 within 14 minutes.
The sample was heated to a maximum temperature of ℃ or higher, and the temperature rising time was shortened due to the increase of the specific surface area and the mixing ratio of the iron powder, and the maximum temperature reached 95 ° C.

【0048】通気度が本発明の範囲外である5CC/c
2・secより低い場合は最高温度が80℃以下とな
り昇温時間も20分以上かかった。
Air permeability of 5 CC / c outside the range of the present invention
When it was lower than m 2 · sec, the maximum temperature was 80 ° C. or lower, and the heating time was 20 minutes or longer.

【0049】また包材の通気面が片面でも5CC/cm
2・sec以上の通気度では特に発熱特性の大きな違い
は認められなかった。
Even if the air permeable surface of the packaging material is one side, it is 5 CC / cm.
No significant difference in heat generation characteristics was observed at an air permeability of 2 sec or more.

【0050】比較例の通常の使い捨てカイロは最高温度
が61℃で、最高温度に達するまでの時間は27分とな
り本発明の発熱特性に比べ温度も低く、昇温時間も長く
なった。
The maximum temperature of the normal disposable body warmer of the comparative example was 61 ° C., and the time required to reach the maximum temperature was 27 minutes, which was lower than the heat generation characteristics of the present invention and the heating time was long.

【0051】[0051]

【実施例2】鉄鉱石を還元して得られた還元鉄粉を使用
し、粒度を調整して比表面積500cm2/gとし、そ
の鉄粉を全使用鉄粉に対して70%配合して、他の鉄粉
は比表面積が300cm2/gの鋳鉄粉を使用した。
Example 2 Using reduced iron powder obtained by reducing iron ore, the particle size was adjusted to a specific surface area of 500 cm 2 / g, and the iron powder was blended at 70% with respect to the total iron powder used. Other iron powders used were cast iron powders having a specific surface area of 300 cm 2 / g.

【0052】吸水助剤に珪藻土、活性炭、バーミキュラ
イトからなる素材に水分を22重量%含水させ包材の通
気度が8CC/cm2・secの通気性包材と非通気性
包材からなる包装体を幅100mm、長さ130mm包
装材料に充填率0.3〜2.0g/cm2の密度でアル
ゴン置換ボックス内で充填して、脱気シールして一昼夜
保存した後に厚さ15mmのゴム盤に水平に置いてゴム
と発熱体の中心部と周囲の最高温度と最高温度になるま
での昇温時間および80℃以上の高温保持時間を調査し
た。その結果を第2表に示す。
A package comprising a breathable packaging material and a non-breathable packaging material having a moisture permeability of 8 CC / cm 2 · sec in which 22% by weight of water is contained in a material composed of diatomaceous earth, activated carbon and vermiculite as a water absorption aid. 100 mm in width and 130 mm in length are packed in a packing material at a density of 0.3 to 2.0 g / cm 2 in an argon displacement box, degassed and sealed, and stored for a day and night, and then on a rubber plate having a thickness of 15 mm. It was placed horizontally, and the maximum temperature of the rubber and the center of the heating element and the surroundings, and the temperature rise time until the maximum temperature and the high temperature holding time of 80 ° C. or higher were investigated. The results are shown in Table 2.

【0053】本発明の充填率の範囲である0.5〜1.
5g/cm2の範囲では最高温度が90℃以上になりか
つ最高温度に達するまでの時間が12分以下と非常に短
かく、かつ高温での保持時間が40分以上となった。
The range of the filling rate of the present invention is 0.5 to 1.
In the range of 5 g / cm 2 , the maximum temperature was 90 ° C. or higher, the time required to reach the maximum temperature was 12 minutes or less, which was extremely short, and the holding time at high temperature was 40 minutes or more.

【0054】さらに発熱体中心部分と周囲の最高温度の
差が小さく均一に加熱することができた。
Furthermore, the difference in maximum temperature between the central portion of the heating element and the surroundings was small, and uniform heating was possible.

【0055】充填率が0.5g/cm2より小さい場合
には発熱剤と接触している中心部は10分以内に85℃
以上の温度まで昇温するが周囲の発熱素材が非常に少な
い部分は熱容量が不十分で最高温度が70℃に達すると
同時に温度が低下し十分に加熱できなかった。
When the filling rate is less than 0.5 g / cm 2, the central portion in contact with the exothermic agent is 85 ° C. within 10 minutes.
Although the temperature was raised to the above temperature, the heat capacity of the portion where the surrounding exothermic material was very small was insufficient, and the maximum temperature reached 70 ° C., and at the same time, the temperature decreased and it could not be heated sufficiently.

【0056】逆に充填密度が1.5g/cm2以上の場
合は発熱体の中心部は加熱面に接触しているものの周囲
は加熱面から離れほとんど加熱できなくなった。
On the contrary, when the packing density was 1.5 g / cm 2 or more, the central portion of the heating element was in contact with the heating surface, but the periphery was apart from the heating surface and could hardly be heated.

【0057】一方被加熱物と接触している接触部の最高
温度は85℃以上になるものの昇温時間が25分以上か
かり発熱速度、加熱むらが大きいと共に、素材コストが
大きくなった。
On the other hand, the maximum temperature of the contact portion in contact with the object to be heated was 85 ° C. or higher, but the temperature rising time was 25 minutes or longer, the heat generation rate and heating unevenness were large, and the material cost was high.

【0058】[0058]

【実施例3】鉄粉に鉄鉱石を還元して得られた還元鉄粉
を使用し、粒度を調整して比表面積500cm2/gに
調整し、その鉄粉を全使用鉄粉の70重量%配合して、
残りの30%は比表面積が300cm2/gの鋳鉄粉を
使用した。
Example 3 Using reduced iron powder obtained by reducing iron ore to iron powder, the particle size was adjusted to a specific surface area of 500 cm 2 / g, and the iron powder was 70% by weight of the total iron powder used. % Blend,
The remaining 30% was cast iron powder having a specific surface area of 300 cm 2 / g.

【0059】吸水助剤に珪藻土、活性炭、バーミキュラ
イトからなる素材に水分を22重量%含水させ包材の通
気度が8CC/cm2・secの通気性包材と非通気性
包材からなる包装体を幅100mm、長さ130mm包
装材料を幅方向に3列、長手方向に16個連続して充填
率1.0g/cm2の密度でアルゴン置換ボックス内で
充填シールして、非通気性の樹脂の袋に脱気シールして
一昼夜保存した後に直径65cm、高さ35cmの円筒
の樹脂を垂直にしてこの外表面に巻き付けて加熱し、発
熱体シール包材の中心部と周囲の最高温度と最高温度に
なるまでの昇温時間を調査した。
A package comprising a breathable packaging material and a non-breathable packaging material having a moisture permeability of 8 CC / cm 2 · sec in which 22% by weight of water is contained in a material composed of diatomaceous earth, activated carbon and vermiculite as a water absorption aid. A width of 100 mm and a length of 130 mm, and packing material in three rows in the width direction and 16 pieces in the length direction are continuously filled and sealed in an argon substitution box at a density of a packing rate of 1.0 g / cm 2 to obtain a non-air-permeable resin. After degassing and sealing in a bag for 24 hours, and then wrapping it around the outer surface of a cylindrical resin with a diameter of 65 cm and a height of 35 cm in a vertical direction and heating it, the maximum temperature and maximum temperature around the center of the heating element seal packaging material and the surrounding The temperature rising time to reach the temperature was investigated.

【0060】その結果、10点測定したが部位別に最高
温度や昇温速度にばらつきは小さくどの部分も最高温度
が87℃〜92℃、最高温度までの昇温時間が10〜1
2分となり発熱剤を小さな単位として連続化することに
より円筒状のものが垂直状態でも均一に急速かつ高温に
加熱できた。
As a result, although 10 points were measured, there was little variation in the maximum temperature and the rate of temperature increase from site to site, and the maximum temperature was 87 ° C to 92 ° C and the temperature rising time to the maximum temperature was 10 to 1 in any part.
It became 2 minutes, and by continuously using the exothermic agent as a small unit, it was possible to uniformly and rapidly heat the cylindrical object to a high temperature even in the vertical state.

【0061】[0061]

【表1】 [Table 1]

【0062】[0062]

【表2】 [Table 2]

【0063】[0063]

【表3】 [Table 3]

【0064】[0064]

【発明の効果】本発明は従来の鉄粉の水酸化反応発熱で
は得ることが困難であった急速、高温加熱が可能とな
り、15分以内の短時間で80℃以上の温度まで加熱で
き、さらに加熱面の温度ばらつきを少なく均一に加熱で
きるとともに被加熱物の形状に合わせて発熱体を連続化
することにより平面以外の曲率を有する加熱面も均一に
加熱することができ、各種加熱用途への適用がはかれる
ものである。
INDUSTRIAL APPLICABILITY The present invention enables rapid and high-temperature heating, which was difficult to obtain by the conventional heat generation of the oxidation reaction of iron powder, and can heat to a temperature of 80 ° C. or higher in a short time within 15 minutes. The heating surface can be heated uniformly with little temperature variation, and the heating surface having a curvature other than a flat surface can be heated uniformly by making the heating element continuous according to the shape of the object to be heated. It is applicable.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 比表面積が400cm2/g以上の鉄粉
を全鉄粉配合量の50重量%以上とし、保水材、金属ハ
ロゲン化物、水を含有し、大気中の酸素との接触により
発熱する発熱素材をガーレー式通気度が5CC/cm2
・sec以上の素材からなる包装材料に収納し、発熱素
材を収納した包装材料の片面の面積に対する発熱素材の
重量が0.5g/cm2から1.5g/cm2の範囲とな
るように充填したことを特徴とする発熱体。
1. An iron powder having a specific surface area of 400 cm 2 / g or more, which accounts for 50% by weight or more of the total iron powder content, contains a water retention material, a metal halide, and water, and generates heat when contacted with oxygen in the atmosphere. Gurley type air permeability of 5CC / cm 2
- housed in a packaging material having the above materials sec, filled as the weight of the heat-generating material relative to one side of the area of the packaging material housing the heating element is in the range of 0.5 g / cm 2 of 1.5 g / cm 2 A heating element characterized in that
【請求項2】 発熱素材を収納した包装材料のサイズが
幅100mm以下、長さ130mm以下である請求項1
記載の発熱体。
2. The size of the packaging material containing the heat generating material is 100 mm or less in width and 130 mm or less in length.
The heating element described.
【請求項3】 発熱素材を収納した発熱体を幅方向、お
よび長手方向に連続して形成したことを特徴とする請求
項1または請求項2記載の発熱体。
3. The heating element according to claim 1, wherein the heating element accommodating the heating material is formed continuously in the width direction and the longitudinal direction.
JP13003393A 1993-05-07 1993-05-07 Heating element Expired - Fee Related JP2853825B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13003393A JP2853825B2 (en) 1993-05-07 1993-05-07 Heating element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13003393A JP2853825B2 (en) 1993-05-07 1993-05-07 Heating element

Publications (2)

Publication Number Publication Date
JPH06315498A true JPH06315498A (en) 1994-11-15
JP2853825B2 JP2853825B2 (en) 1999-02-03

Family

ID=15024490

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13003393A Expired - Fee Related JP2853825B2 (en) 1993-05-07 1993-05-07 Heating element

Country Status (1)

Country Link
JP (1) JP2853825B2 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5860945A (en) * 1996-12-31 1999-01-19 The Procter & Gamble Company Disposable elastic thermal knee wrap
US5904710A (en) * 1997-08-21 1999-05-18 The Procter & Gamble Company Disposable elastic thermal body wrap
US5906637A (en) * 1997-08-21 1999-05-25 The Procter & Gamble Company Disposable elastic thermal uniaxial joint wrap
US5918590A (en) * 1995-06-29 1999-07-06 The Procter & Gamble Company Heat cells
US5925072A (en) * 1996-12-31 1999-07-20 The Procter & Gamble Company Disposable elastic thermal back wrap
US5984995A (en) * 1996-03-29 1999-11-16 The Procter & Gamble Company Heat cells
US6019782A (en) * 1996-12-31 2000-02-01 The Procter & Gamble Company Disposable thermal body pad
US6020040A (en) * 1996-12-31 2000-02-01 The Procter & Gamble Company Thermal pack having a plurality of individual heat cells
US6048326A (en) * 1996-12-31 2000-04-11 The Procter & Gamble Company Disposable elastic thermal knee wrap
US6074413A (en) * 1996-12-31 2000-06-13 The Procter & Gamble Company Disposable elastic thermal back wrap
US6096067A (en) * 1996-12-31 2000-08-01 The Procter & Gamble Company Disposable thermal body pad
US6102937A (en) * 1996-12-31 2000-08-15 The Procter & Gamble Company Disposable thermal neck wrap
US6123717A (en) * 1996-12-31 2000-09-26 The Procter & Gamble Company Disposable thermal neck wrap
US6336935B1 (en) 1999-09-15 2002-01-08 The Procter & Gamble Company Disposable thermal body wrap
JP2002038109A (en) * 2000-07-28 2002-02-06 Japan Pionics Co Ltd Heating bag

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5988535B2 (en) * 2009-09-29 2016-09-07 小林製薬株式会社 Heating tool

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5918590A (en) * 1995-06-29 1999-07-06 The Procter & Gamble Company Heat cells
US5984995A (en) * 1996-03-29 1999-11-16 The Procter & Gamble Company Heat cells
US6048326A (en) * 1996-12-31 2000-04-11 The Procter & Gamble Company Disposable elastic thermal knee wrap
US6074413A (en) * 1996-12-31 2000-06-13 The Procter & Gamble Company Disposable elastic thermal back wrap
US5925072A (en) * 1996-12-31 1999-07-20 The Procter & Gamble Company Disposable elastic thermal back wrap
US6146732A (en) * 1996-12-31 2000-11-14 The Procter & Gamble Company Thermal pack having a plurality of individual heat cells
US6019782A (en) * 1996-12-31 2000-02-01 The Procter & Gamble Company Disposable thermal body pad
US6020040A (en) * 1996-12-31 2000-02-01 The Procter & Gamble Company Thermal pack having a plurality of individual heat cells
US5860945A (en) * 1996-12-31 1999-01-19 The Procter & Gamble Company Disposable elastic thermal knee wrap
US6123717A (en) * 1996-12-31 2000-09-26 The Procter & Gamble Company Disposable thermal neck wrap
US6096067A (en) * 1996-12-31 2000-08-01 The Procter & Gamble Company Disposable thermal body pad
US6102937A (en) * 1996-12-31 2000-08-15 The Procter & Gamble Company Disposable thermal neck wrap
US5906637A (en) * 1997-08-21 1999-05-25 The Procter & Gamble Company Disposable elastic thermal uniaxial joint wrap
US5904710A (en) * 1997-08-21 1999-05-18 The Procter & Gamble Company Disposable elastic thermal body wrap
US6336935B1 (en) 1999-09-15 2002-01-08 The Procter & Gamble Company Disposable thermal body wrap
JP2002038109A (en) * 2000-07-28 2002-02-06 Japan Pionics Co Ltd Heating bag

Also Published As

Publication number Publication date
JP2853825B2 (en) 1999-02-03

Similar Documents

Publication Publication Date Title
JPH06315498A (en) Heat generating body
CA1251932A (en) Exothermic composition
EP2052183B1 (en) Oxygen activated heater and methods of manufacturing same
US5117809A (en) Flameless heater product for ready-to-eat meals and process for making same
JPS5835706B2 (en) A chemical pot that generates heat by adding water during use.
JPS60174455A (en) Flexing electrochemical heating tool
US20030097164A1 (en) Warming pack with temperature uniformity and temperature stabilization
BRPI0616389A2 (en) heating cells comprising exothermic compositions with gel-forming absorbent material
GB1447924A (en) Warmer
US4093424A (en) Thermogenic compositions
US6309598B1 (en) Electrochemical heater and method for sterilizing
US20040081727A1 (en) Gas-release packet with frangible sub-packet
JPH06316207A (en) Tire warmer
JP2007209690A (en) Shape keeper for bag
JP2001089757A (en) Heat-generating composition and heating tool
JP6472916B1 (en) Method for producing iron powder for exothermic composition
JPS6352872B2 (en)
JPH0347857B2 (en)
JPS59229131A (en) Exothermic object to be used in chemical pocket warmer served by adding water when in use
RU74787U1 (en) ACTIVATED WATER FLAT HEATER
EP0526637A1 (en) Disposable body-warmer
JPS63296683A (en) Anaerobic gas forming composition
JPH04130176A (en) Packaged heat generating material
KR0178091B1 (en) Flexible electrochemical heater
JP2004204113A (en) Exothermic agent and exothermic body using the same

Legal Events

Date Code Title Description
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 19981104

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20071120

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081120

Year of fee payment: 10

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081120

Year of fee payment: 10

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091120

Year of fee payment: 11

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101120

Year of fee payment: 12

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101120

Year of fee payment: 12

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111120

Year of fee payment: 13

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111120

Year of fee payment: 13

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121120

Year of fee payment: 14

LAPS Cancellation because of no payment of annual fees