JPH05176846A - Production of heat-insulated vessel - Google Patents
Production of heat-insulated vesselInfo
- Publication number
- JPH05176846A JPH05176846A JP19220391A JP19220391A JPH05176846A JP H05176846 A JPH05176846 A JP H05176846A JP 19220391 A JP19220391 A JP 19220391A JP 19220391 A JP19220391 A JP 19220391A JP H05176846 A JPH05176846 A JP H05176846A
- Authority
- JP
- Japan
- Prior art keywords
- container
- heat
- vacuum
- synthetic resin
- heat insulating
- 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.)
- Pending
Links
Landscapes
- Thermally Insulated Containers For Foods (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、優れた保温性、保冷性
を有し、軽量でかつ実用性に富んだ断熱容器の製造方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a heat-insulating container which has excellent heat retaining properties and cold retaining properties, is lightweight, and is highly practical.
【０００２】[0002]
【従来の技術】従来、魔法瓶や保温弁当箱としてガラス
製あるいはステンレス等を用いた金属製の断熱容器が使
用されている。これらのガラス製あるいは金属製の真空
断熱容器は、外容器、内容器、及びその空間からなり、
その空間部を真空排気して真空断熱層としたものであっ
て、断熱性に優れ、かつ長期間にわたって高真空の状態
を保持することができるが、製造上、形状やデザインに
制約がある上に、製品が重いため携帯に不便であった。2. Description of the Related Art Conventionally, a heat insulating container made of glass or a metal made of stainless steel has been used as a thermos or a warm lunch box. These glass or metal vacuum insulation containers consist of an outer container, an inner container, and its space,
The space is evacuated to form a vacuum insulation layer. It has excellent heat insulation properties and can maintain a high vacuum state for a long period of time, but there are restrictions in shape and design due to manufacturing. In addition, the product is heavy, which makes it inconvenient to carry.
【０００３】そこでガラスや金属に替わって、成形が容
易でかつ軽量である合成樹脂を用いた真空断熱容器が提
案されている。これはガラス製あるいは金属製のものと
同様の構造であり、その製造においては内外容器の表面
に、ガスバリア性を高める目的で金属薄膜を形成する方
法がとられている。しかしながら、前記合成樹脂製断熱
容器が加熱あるいは冷却を繰り返されると、合成樹脂と
メッキ層の間に応力が発生し、その応力によってメッキ
層に割れ、膨れ等の欠陥が生じることがあり、その結
果、メッキ層の密着を破壊し、ガスバリア性を失わせる
という問題があった。これに対して、内容器、外容器の
少なくとも一方を合成樹脂製の容器で形成すると共に断
熱空間層内に通気性多孔質材料を充填してなる断熱容器
が特開平２−２６５５１３号公報によって技術開示され
ている。Therefore, a vacuum heat insulating container using a synthetic resin, which is easy to mold and lightweight, has been proposed in place of glass or metal. This has a structure similar to that of glass or metal, and in the production thereof, a method of forming a metal thin film on the surface of the inner and outer containers for the purpose of enhancing the gas barrier property is adopted. However, when the synthetic resin heat insulation container is repeatedly heated or cooled, stress is generated between the synthetic resin and the plating layer, and the stress may cause defects such as cracking and swelling in the plating layer. However, there is a problem that the adhesion of the plating layer is destroyed and the gas barrier property is lost. On the other hand, a heat insulating container in which at least one of an inner container and an outer container is made of a synthetic resin container and a heat insulating space layer is filled with a gas permeable porous material is disclosed in Japanese Patent Laid-Open No. 2-265513. It is disclosed.
【０００４】一方、断熱容器の保温または保冷性能は断
熱空間層の真空度（圧力）に大きく依存する。従来の家
庭用ガラス製魔法瓶やステンレス製魔法瓶などの断熱容
器では、この断熱空間層の真空度（圧力）は少なくとも
１０-4Ｔｏｒｒ以下の高真空が必要であった。On the other hand, the heat insulating or cold insulating performance of the heat insulating container largely depends on the degree of vacuum (pressure) of the heat insulating space layer. In a conventional heat insulating container such as a glass thermos bottle for home use or a stainless steel thermos bottle, the vacuum degree (pressure) of the heat insulating space layer needs to be a high vacuum of at least 10 −4 Torr or less.
【０００５】しかるに、前記合成樹脂製の真空断熱容器
は、断熱層空間層の真空度を１０-4Ｔｏｒｒ以下に保持
するためには内・外容器を高真空、高温でベーキング処
理することにより、脱ガスを十分になお且つ短時間に実
施することが必要である。しかしながら、内・外容器の
いずれかが合成樹脂で構成されているために、従来のガ
ラス製やステンレス製の内・外容器からなる真空断熱容
器をベーキング処理すると同様な方法にて高温による真
空排気を行なうことは、合成樹脂の耐熱性能の限界から
不可能であった。このため、前記構成樹脂製断熱容器
は、断熱空間層の真空度を１０-2〜１０0Ｔｏｒｒのい
わゆる低真空度に排気し、脱ガスによる断熱層内真空度
の劣化の影響を排除するとともに断熱層内に残留する気
体分子による熱伝導を減少させるため微細な通気性多孔
質材料を充填することにより構成されている。However, in order to maintain the vacuum degree of the heat insulating layer space layer at 10 -4 Torr or less, the synthetic resin vacuum insulation container is baked at high vacuum and high temperature to form an inner and outer container. It is necessary to carry out degassing sufficiently and in a short time. However, since either the inner or outer container is made of synthetic resin, the conventional vacuum insulation container consisting of glass or stainless steel inner or outer container is baked in the same way as vacuum evacuation at high temperature. It was impossible to perform the above because of the limit of heat resistance of the synthetic resin. Therefore, the structure resin insulated container, as well as the vacuum degree of the heat insulation space layer evacuated to 10 -2 to 10 0 Torr so-called low degree of vacuum, to eliminate the influence of degradation of the heat insulating layer in the vacuum degree of the degassing In order to reduce the heat conduction due to the gas molecules remaining in the heat insulating layer, it is constituted by filling with a fine permeable porous material.
【０００６】[0006]
【発明が解決しようとする課題】しかし、上記構成によ
る構成樹脂製断熱容器は、以下のような欠点を有する。
前記合成樹脂製断熱容器の断熱層内を充填している微細
な多孔質材料により、容器重量が多くなり、実用上携帯
に不便であった。また、断熱層内を真空に排気する際
に、その微細な多孔質材料が排気抵抗を大きくしたり、
真空排気管のフィルターや真空排気装置内部に蓄積して
排気時間を増加させたりすることから、排気装置の保守
に時間や労力をかけざるおえなかった。However, the heat insulating container made of the constituent resin having the above structure has the following drawbacks.
The fine porous material filling the inside of the heat insulating layer of the synthetic resin heat insulating container increases the weight of the container, which is practically inconvenient to carry. Also, when exhausting the inside of the heat insulating layer to a vacuum, the fine porous material increases the exhaust resistance,
Since it accumulates in the filter of the vacuum exhaust pipe and the inside of the vacuum exhaust device to increase the exhaust time, it was necessary to spend time and labor for the maintenance of the exhaust device.
【０００７】よって、本発明は従来の内・外容器いずれ
かを合成樹脂で形成した断熱容器において、長期間の使
用に対しても真空断熱層の高真空度を維持することがで
き、軽量で、かつ実用性に富んだ断熱容器の製造方法の
提供を目的とする。Therefore, according to the present invention, in the conventional heat insulating container in which either the inner or outer container is made of synthetic resin, the high vacuum degree of the vacuum heat insulating layer can be maintained even for long-term use, and the weight is light. In addition, it is an object of the present invention to provide a method for manufacturing a heat-insulating container that is highly practical.
【０００８】[0008]
【課題を解決するための手段】本発明は断熱容器の製造
にあたって、内容器を金属製薄肉容器で形成し、外容器
を合成樹脂製の容器で形成するとともに、前記内容器の
底部に吸着剤を配した吸着剤保持容器を設け、また、前
記外容器底部に排気用開口部を形成して、これらを接合
・一体化させ断熱容器本体を形成し、これらを真空系内
に収容して真空排気処理しつつ、金属製内容器をベーキ
ング処理し、その際の熱輻射によって合成樹脂製外容器
をも同時に加熱し、脱ガス処理を行なう一方、金属製内
容器の内部より加熱して吸着剤を活性化処理し、次いで
真空封止板にて外容器底部の開口部を封止して、断熱層
内を１０-5Ｔｏｒｒ以下の高真空度に保持することを前
記課題の解決手段とした。According to the present invention, in the production of a heat insulating container, the inner container is formed of a thin metal container, the outer container is formed of a synthetic resin container, and an adsorbent is formed on the bottom of the inner container. The adsorbent holding container is provided, and the exhaust opening is formed at the bottom of the outer container, and these are joined and integrated to form a heat insulating container body, which is housed in a vacuum system and vacuumed. While exhausting, the metal inner container is baked and the synthetic resin outer container is also heated by the heat radiation at the same time to perform degassing, while the metal inner container is heated from inside the adsorbent. Was activated, and then the opening of the bottom of the outer container was sealed with a vacuum sealing plate to maintain the inside of the heat insulating layer at a high degree of vacuum of 10 −5 Torr or less. ..
【０００９】[0009]
【作用】よって、本発明の断熱容器の製造方法は、内面
に真空蒸着や化学・電気メッキあるいは接着・熱融着な
どによる金属製薄膜を形成させた合成樹脂製外容器と金
属製内容器を一体化し、形成された断熱空間層を高真空
に排気して後、真空封止してなるものであり、内容器の
耐熱性が高く、高温でのベーキング処理が可能である。
また、真空中での脱ガス量が金属よりも１０００〜１０
０００倍大きい合成樹脂を外容器のみに限定して用いる
ことにより、断熱層内真空排気後の真空度保持を容易か
つ確実性をもって行なうことができる。そして、これに
伴い必要とされる高価な吸着剤の量を大幅に節約するこ
とが可能となる。さらに、粉末真空断熱方式による外容
器または内容器の一方が合成樹脂製で製造された断熱容
器の製造方法と本発明の断熱容器の製造方法を比較し
て、本発明による断熱容器では、断熱層に前記粉末が充
填していないため軽量であり、またベーキング処理が容
易に、且つ短時間で処理することができることから、製
作工程における作業時間も大幅に減らすことができ連続
的な製造が可能であり量産化を図ることができる。Therefore, the method of manufacturing a heat-insulating container of the present invention comprises a synthetic resin outer container and a metal inner container having a metal thin film formed on the inner surface by vacuum deposition, chemical / electroplating, adhesion, heat fusion or the like. The integrally formed heat insulating space layer is evacuated to a high vacuum and then vacuum-sealed. The heat resistance of the inner container is high, and a baking process at a high temperature is possible.
Moreover, the degassing amount in vacuum is 1000 to 10 as compared with metal.
By using a synthetic resin that is 000 times larger only in the outer container, it is possible to easily and reliably maintain the degree of vacuum after evacuation of the inside of the heat insulating layer. Then, along with this, it is possible to greatly reduce the amount of expensive adsorbent required. Furthermore, by comparing the method for producing an insulating container in which one of the outer container or the inner container according to the powder vacuum insulating system is made of synthetic resin with the method for manufacturing the insulating container according to the present invention, the insulating container according to the present invention has an insulating layer. Since it is not filled with the above powder, it is lightweight, and since the baking process can be performed easily and in a short time, the working time in the manufacturing process can be greatly reduced and continuous manufacturing is possible. Available for mass production.
【００１０】[0010]
【実施例】以下本発明を図１、図２に基づいて説明す
る。図１は本発明の製造方法に従って製造された断熱容
器の断面図であり、図２は図１の外容器拡大図を示した
ものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. FIG. 1 is a cross-sectional view of a heat insulating container manufactured according to the manufacturing method of the present invention, and FIG. 2 is an enlarged view of the outer container of FIG.
【００１１】まず、射出成形法や真空成形法等を用いて
合成樹脂製外容器１を形成する。図２に示すように、そ
の合成樹脂製外容器２ｂの内面には、ガスバリア性と熱
輻射性を付与する目的で、真空蒸着または、メッキ等に
より金属薄膜２ｂを被覆する。一方、プレス加工・溶接
等によって内容器３を形成し、その内容器３底部外面に
は、物理吸着剤あるいは化学吸着剤５を収納するための
金属性容器６をスポット溶接や銀ロウ付けなどを用いて
固着させる。金属容器６には吸着剤５の収納を容易に行
なえるための通気孔がその一部に設けてある。そしてこ
れら外容器２、内容器３のそれぞれ口部２ａ、３ａを互
いに突き合わせて、接着剤または低融点ロウ剤７などを
用いて接合する。こうして外容器２と内容器との間に空
間部１０が形成される。この時、場合によっては金属製
内容器３の外面に熱輻射や接合密着性を高める目的で、
真空蒸着またはメッキ等により金属薄膜２ｂを被覆する
こともある。First, the synthetic resin outer container 1 is formed by an injection molding method, a vacuum molding method or the like. As shown in FIG. 2, the inner surface of the synthetic resin outer container 2b is coated with a metal thin film 2b by vacuum deposition, plating, or the like for the purpose of imparting gas barrier properties and heat radiation properties. On the other hand, the inner container 3 is formed by press working, welding, etc., and a metal container 6 for storing the physical adsorbent or the chemical adsorbent 5 is formed on the outer surface of the bottom of the inner container 3 by spot welding or silver brazing. Use to fix. The metal container 6 is provided with a ventilation hole at a part thereof for easily storing the adsorbent 5. Then, the mouth portions 2a, 3a of the outer container 2 and the inner container 3, respectively, are butted against each other and joined using an adhesive or a low melting point brazing agent 7 or the like. In this way, the space 10 is formed between the outer container 2 and the inner container. At this time, in some cases, for the purpose of enhancing heat radiation and bonding adhesion to the outer surface of the inner metal container 3,
The metal thin film 2b may be covered by vacuum deposition or plating.
【００１２】こうして形成された断熱容器本体１を真空
系内に収容して、所定の真空度で真空排気する。そし
て、真空系内の真空度が１０-5Ｔｏｒｒ以下になると同
時に、ベーキング用の加熱装置を金属製内容器３内に挿
入し、口元部８の接着剤または低融点ロウ剤７が熱劣化
を起こさない程度の温度で、金属製内容器３を加熱す
る。その際、金属製内容器３の輻射熱により合成樹脂製
外容器２の内面も同時に、合成樹脂製外容器２の耐熱温
度範囲で加熱されることとなり、脱ガス処理がなされ
る。The heat insulating container body 1 thus formed is housed in a vacuum system and evacuated to a predetermined vacuum degree. Then, at the same time when the degree of vacuum in the vacuum system becomes 10 -5 Torr or less, a heating device for baking is inserted into the inner metal container 3 to prevent the adhesive or the low melting point brazing agent 7 at the mouth 8 from being thermally deteriorated. The inner metal container 3 is heated at a temperature at which it does not occur. At that time, the inner surface of the synthetic resin outer container 2 is simultaneously heated within the heat resistant temperature range of the synthetic resin outer container 2 by the radiant heat of the metal inner container 3, and a degassing process is performed.
【００１３】こうしてベーキング処理が終了した後、金
属製内容器３内部の底部に電気シース・ヒーターを内蔵
する加熱用の銅製ブロックを接触させ、加熱することに
より金属製容器６内の吸着剤５を活性化処理する。そし
て最後に、封止部９を金属製封止板４で、接着剤あるい
は低融点ロウ剤７を用いて真空封止することにより本発
明による断熱容器が得られる。After the baking process is completed in this way, a copper block for heating containing an electric sheath heater is brought into contact with the bottom of the inner metal container 3 to heat the adsorbent 5 in the metal container 6. Activate. Finally, the sealing portion 9 is vacuum-sealed with the metal sealing plate 4 using the adhesive or the low melting point brazing agent 7 to obtain the heat insulating container according to the present invention.
【００１４】このように本発明による断熱容器の製造方
法は、従来の合成樹脂製断熱容器の製造方法と比較し
て、内容器３の耐熱性がはるかに高く、内容器３のベー
キング処理が高温で可能となり、処理時間が短縮できる
とともに外容器２及び口元・接合部８への熱影響を少な
くすることができる。さらに、内容器３の輻射熱を利用
して外容器２の内面の加熱が可能となり加熱設備の簡略
化を図ることができる。一方、外容器２に、真空中での
脱ガス量が金属よりも１０００〜１００００倍大きい合
成樹脂を限定して使用することにより、断熱層内真空排
気後の真空度保持が容易に且つ確実性をもって行なうこ
とが可能となり、これに伴って必要とされる高価な吸着
剤５の量を大幅に節約することが可能となる。As described above, in the method of manufacturing the heat insulating container according to the present invention, the heat resistance of the inner container 3 is much higher than that of the conventional method of manufacturing the heat insulating container made of synthetic resin, and the baking treatment of the inner container 3 is performed at a high temperature. The processing time can be shortened and the thermal influence on the outer container 2 and the mouth / joint portion 8 can be reduced. Further, the inner surface of the outer container 2 can be heated by utilizing the radiant heat of the inner container 3, and the heating equipment can be simplified. On the other hand, by limiting the use of a synthetic resin whose degassing amount in vacuum is 1000 to 10000 times larger than that of metal to the outer container 2, it is easy and reliable to maintain the degree of vacuum after vacuum evacuation in the heat insulating layer. Therefore, the amount of expensive adsorbent 5 required therewith can be greatly saved.
【００１５】さらに、真空断熱容器に作用する力は外容
器２では大気圧が外圧として働くため、耐圧強度を高め
るために容器の肉厚を厚くしなければならないが、内容
器３に掛かる大気圧は内圧として作用するため容器の肉
厚は薄肉で製造することができる。このことから、本発
明のように内容器３に比重が合成樹脂より３〜４倍大き
い金属を使用しても、引っ張り強度が合成樹脂より大き
いため、比強度からすると０．３ｍｍ以下の肉厚で大気
圧を支えることができる。よって、本発明の断熱容器の
ように金属を高真空断熱容器の内容器３に限定して使用
しても全体の重量は、全金属製よりもかなりの軽量化が
図れる。Further, since the force acting on the vacuum heat insulating container is the atmospheric pressure in the outer container 2 which acts as the external pressure, the thickness of the container must be increased in order to increase the pressure resistance, but the atmospheric pressure applied to the inner container 3 is increased. Since it acts as an internal pressure, the container can be manufactured with a thin wall thickness. Therefore, even if a metal having a specific gravity 3 to 4 times larger than that of the synthetic resin is used for the inner container 3 as in the present invention, the tensile strength is larger than that of the synthetic resin. Can support atmospheric pressure. Therefore, even if the metal is limited to the inner container 3 of the high-vacuum heat insulating container as in the heat insulating container of the present invention, the total weight can be considerably reduced as compared with the case of using all metal.
【００１６】また、従来の通気性多孔質微細粉末を外容
器２と内容器３で形成される断熱空間層に充填してな
る、いわゆる粉末真空断熱方式による、外容器２または
内容器３の一方が合成樹脂製で製造された断熱容器の製
造方法と、本発明の断熱容器製造方法を比較しても、本
発明による断熱容器では、断熱層に前記粉末が充填して
いないため軽量であり、またベーキング処理が容易に短
時間で処理することができ、微細粉末を一定密度で充填
する製造工程を省くことができ、大幅に製造時間を短縮
することができる。Further, one of the outer container 2 and the inner container 3 by a so-called powder vacuum heat insulation system, in which the conventional air-permeable porous fine powder is filled in the heat insulating space layer formed by the outer container 2 and the inner container 3. Is a method for manufacturing a heat insulating container made of synthetic resin, even when comparing the heat insulating container manufacturing method of the present invention, in the heat insulating container according to the present invention, the heat insulating layer is lightweight because the powder is not filled, Further, the baking process can be easily performed in a short time, the manufacturing process of filling the fine powder with a constant density can be omitted, and the manufacturing time can be shortened significantly.
【００１７】さらに、多孔質微粉末をベーキング処理に
より脱ガス処理する際、吸着剤５から脱着する空気成分
や水分を混合した吸着剤５が再吸着したり、逆に吸着剤
５の活性化の際、吸着剤５から脱着する空気成分や水分
を多孔質微細粉末が再吸着して多孔質微細粉末の脱ガス
処理や吸着剤５の活性化が十分に行なわれず真空封止後
長期間、断熱層空間の真空度を維持することができず、
保温性能を悪化させる原因となっていた。そこで、従来
の合成樹脂製断熱容器では、吸着剤５の活性化を別の場
所・別の工程の中で処理してから断熱層の中に充填し、
固定する必要があった。しかし、本発明による断熱容器
の製造方法によれば、合成樹脂製の外容器２に熱影響を
及ぼさずに、吸着剤５が固定されている金属製内容器２
の底部の局所を集中的に加熱することができる。よっ
て、高い活性化温度で吸着剤５の活性化が十分に行なう
ことができ、短時間に活性化処理が可能となり、口元部
８の接着剤や低融点ロウ剤７、また、合成樹脂製外容器
２に熱影響を及ぼす恐れがない。Further, when degassing the porous fine powder by baking treatment, the adsorbent 5 mixed with the air component and water desorbed from the adsorbent 5 is re-adsorbed, or conversely, activated. At this time, the porous fine powder re-adsorbs the air component and water desorbed from the adsorbent 5, so that the degassing treatment of the porous fine powder and the activation of the adsorbent 5 are not sufficiently performed, and heat insulation is performed for a long time after vacuum sealing. I could not maintain the vacuum of the layer space,
It was a cause of deteriorating the heat retention performance. Therefore, in the conventional heat insulating container made of synthetic resin, the activation of the adsorbent 5 is processed in a different place in a different process and then filled in the heat insulating layer,
I had to fix it. However, according to the method for manufacturing a heat insulating container according to the present invention, the metal inner container 2 to which the adsorbent 5 is fixed without affecting the outer container 2 made of synthetic resin by heat.
It is possible to heat locally the bottom of the. Therefore, the adsorbent 5 can be sufficiently activated at a high activation temperature, and the activation treatment can be performed in a short time, and the adhesive at the mouth portion 8, the low melting point brazing agent 7, and the synthetic resin exterior There is no risk of heat influence on the container 2.
【００１８】従って、本発明による断熱容器の製造方法
によれば、従来の合成樹脂製断熱容器または、粉末真空
断熱方式による外容器または内容器が合成樹脂製で製造
された断熱容器と比較して、軽量でかつ断熱性に優れた
断熱容器を得ることができる。更に、ベーキング処理及
び脱ガスの処理時間も大幅に短縮できることから製作工
程における作業時間も大幅に減らすことができ、連続的
な製造が可能であり、量産化を図ることができる。Therefore, according to the method for manufacturing a heat insulating container of the present invention, as compared with the conventional heat insulating container made of synthetic resin, or the outer container or inner container of the powder vacuum heat insulating system made of synthetic resin. Thus, it is possible to obtain a heat-insulating container that is lightweight and has excellent heat insulating properties. Further, since the processing time of the baking process and the degassing can be greatly shortened, the working time in the manufacturing process can be greatly reduced, continuous manufacturing is possible, and mass production can be achieved.
【００１９】（実施例）まず、ＡＢＳ樹脂を用いて射出
成形法により肉厚２．５ｍｍの合成樹脂製外容器２を形
成した。そして、その内面に電気銅メッキを施工して金
属製薄膜２ｂを被覆した。一方、内容器３は肉厚０．３
ｍｍのステンレス鋼ＳＵＳ３０４を用いて、プレス加工
・溶接加工などにより形成し、その内容器底部３外面に
化学吸着剤５を収容するステンレス製容器６をスポット
溶接により固着させた。そして、前記ステンレス製容器
６に、吸着剤５としてサエスゲッターＳＴ７０７を、挿
入した。Example First, an outer container 2 made of synthetic resin and having a thickness of 2.5 mm was formed by injection molding using ABS resin. Then, the inner surface thereof was subjected to electrolytic copper plating to cover the metal thin film 2b. On the other hand, the inner container 3 has a wall thickness of 0.3.
A stainless steel container 6 containing a chemical adsorbent 5 was fixed to the outer surface of the inner container bottom 3 by spot welding using a stainless steel SUS304 having a thickness of mm. Then, SAES Getter ST707 as the adsorbent 5 was inserted into the stainless steel container 6.
【００２０】そして、このように形成された、前記ＡＢ
Ｓ樹脂製外容器２とステンレス製内容器３のそれぞれの
口部２ａ、３ａを組み合わせて、その口元部８を低融点
ハンダ（アサヒメタル製のＵアロス９５）を使用して接
合・一体化した。そして、これを真空系の中に導入し、
真空排気を開始した。真空系内の真空度が１０-5Ｔｏｒ
ｒ以下になると同時にベーキング用の加熱装置を内容器
３に挿入し、ステンレス製内容器３の内面を１８０℃に
加熱した。その時、口元部８の温度はステンレスの熱伝
導度が小さいことと、口元部８からの放射によって９０
℃以上には上昇せず、従って口元部８が熱影響を受ける
ことはなかった。また、加熱された内容器３の外面に対
向する外容器２の内面の温度は約９５℃となった。Then, the AB formed as described above
The mouth portions 2a and 3a of the S resin outer container 2 and the stainless steel inner container 3 are combined, and the mouth portions 8 thereof are joined and integrated by using a low melting point solder (U Aros 95 made by Asahi Metal). .. And introduce this into the vacuum system,
Evacuation was started. The degree of vacuum in the vacuum system is 10 -5 Tor
At the same time when the temperature became r or less, a heating device for baking was inserted into the inner container 3 to heat the inner surface of the stainless steel inner container 3 to 180 ° C. At that time, the temperature of the mouth portion 8 is 90% due to the low thermal conductivity of stainless steel and the radiation from the mouth portion 8.
The temperature did not rise above 0 ° C, so that the mouth 8 was not affected by heat. The temperature of the inner surface of the outer container 2 facing the heated outer surface of the inner container 3 was about 95 ° C.
【００２１】こうしてベーキング処理が終了すると、そ
の加熱装置は内容器３より吊り上げられ、吸着剤５の活
性化処理用の局所加熱装置が内容器３底部に接触させら
れ加熱が開始された。そこで、内容器３底部外面に固定
された化学吸着剤５が３５０℃で加熱された。つぎに、
活性化処理が終了し、局所加熱装置が内容器３より吊り
上げられると真空系内の真空度が１０-6Ｔｏｒｒ以下に
排気されているのを確認し、低融点ハンダリング（アサ
ヒメタル製のＵアロイ製）がはめ込まれた肉厚１ｍｍの
ステンレス製封止板４を電気ヒータが内蔵されたブロッ
クによって封止口１１に押さえつけ、接合した。When the baking process was completed in this way, the heating device was lifted from the inner container 3, and the local heating device for activating the adsorbent 5 was brought into contact with the bottom of the inner container 3 to start heating. Therefore, the chemical adsorbent 5 fixed to the outer surface of the bottom of the inner container 3 was heated at 350 ° C. Next,
When the activation process is completed and the local heating device is lifted from the inner container 3, it is confirmed that the vacuum degree in the vacuum system is evacuated to 10 -6 Torr or less, and low melting point soldering (U of Asahi Metal Co., Ltd.) is performed. A 1 mm-thick stainless steel sealing plate 4 in which an alloy) was fitted was pressed against the sealing port 11 by a block containing an electric heater and joined.
【００２２】以上の製作工程が完了後、真空系内を大気
開放し、高真空断熱容器を取り出し製作を完了した。After the above manufacturing steps were completed, the inside of the vacuum system was opened to the atmosphere, and the high vacuum heat insulating container was taken out to complete the manufacturing.
【００２３】このようにして製造した断熱容器は、長期
にわたって高真空度を維持することができ、優れた保温
性能、保冷性能を有するものであった。The heat-insulating container produced in this manner was able to maintain a high degree of vacuum for a long period of time and had excellent heat retention performance and cold insulation performance.
【００２４】[0024]
【発明の効果】本発明の断熱容器の製造方法は、内容器
を金属製薄肉容器で形成し、外容器を合成樹脂製の容器
で形成すると共に、前記内容器の底部に吸着剤を配した
吸着剤保持容器を設け、また、前記外容器の底部に排気
用開口部を形成して、これらを接合・一体化させ断熱容
器本体を形成し、これらを真空系内に収容して真空排気
しつつ、金属製内容器をベーキング処理し、その際の熱
輻射によって、合製樹脂製外容器をも同時に加熱し、脱
ガス処理を行なう一方、金属製内容器の内部より加熱し
て吸着剤を活性化処理し、次いで真空封止板にて外容器
底部の開口部を封止して、断熱層内を１０-5Ｔｏｒｒ以
下の高真空度に保持するものである。According to the method of manufacturing a heat insulating container of the present invention, the inner container is formed of a thin metal container, the outer container is formed of a synthetic resin container, and an adsorbent is arranged on the bottom of the inner container. An adsorbent holding container is provided, and an exhaust opening is formed at the bottom of the outer container, and these are joined and integrated to form a heat-insulating container body, which is housed in a vacuum system and evacuated to vacuum. At the same time, the metal inner container is baked, and the heat radiation at that time also heats the synthetic resin outer container at the same time to perform degassing, while heating it from the inside of the metal inner container to remove the adsorbent. After activation, the opening of the bottom of the outer container is sealed with a vacuum sealing plate to maintain the inside of the heat insulating layer at a high degree of vacuum of 10 −5 Torr or less.
【００２５】従って、本発明よる断熱容器の製造方法に
よれば、内容器の耐熱性がはるかに高く、高温でのべー
キング処理が可能であるとともに、外容器に、真空中で
の脱ガス量が金属より１０００〜１００００倍大きい合
成樹脂を限定して使用することにより、断熱層内真空排
気後の真空度保持を容易に且つ確実性をもって行なうこ
とができる。また、粉末真空断熱方式による外容器また
は内容器の一方が合成樹脂で製造された断熱容器の製造
方法と本発明の断熱容器の製造方法を比較しても、本発
明による断熱容器は、断熱層に層内に通気性多孔質微細
粉末を充填する必要がないため軽量であり、さらにベー
キング処理が容易に、且つ短時間で処理することができ
ることから、製作工程における作業時間が大幅に短縮さ
れ、連続的な製造が可能であり、製造効率を向上させる
ことができる。よって、本発明による断熱容器の製造方
法によれば、保温性、保冷性に優れ、かつ軽量で実用性
に富んだ断熱容器を得ることができる。Therefore, according to the method for producing a heat-insulating container according to the present invention, the heat resistance of the inner container is much higher, the baking treatment can be performed at a high temperature, and the outer container is degassed in vacuum. By limiting the use of a synthetic resin that is 1000 to 10,000 times larger than that of a metal, it is possible to easily and reliably maintain the degree of vacuum after evacuation of the inside of the heat insulating layer. In addition, even if the method for manufacturing an insulating container in which one of the outer container and the inner container by the powder vacuum insulating method is manufactured with a synthetic resin is compared with the method for manufacturing the insulating container according to the present invention, the insulating container according to the present invention has a heat insulating layer. Since it is not necessary to fill the layer with the breathable porous fine powder, it is lightweight, and the baking process can be performed easily and in a short time, so that the working time in the manufacturing process is significantly shortened, Continuous production is possible, and production efficiency can be improved. Therefore, according to the method for manufacturing a heat-insulating container of the present invention, it is possible to obtain a heat-insulating container that is excellent in heat retention and cold retention, is lightweight, and is highly practical.
【図１】本発明の断熱容器の製造方法に従って製造され
た断熱容器の断面図である。FIG. 1 is a cross-sectional view of a heat insulating container manufactured according to the method for manufacturing a heat insulating container of the present invention.
【図２】図１の外容器の拡大断面図である。FIG. 2 is an enlarged sectional view of the outer container of FIG.
１ 断熱容器本体 ２ 外容器 ３ 内容器 ４ 真空封止板 ５ 吸着剤 ６ 吸着剤保持容器 ７ 接着剤または低融点ロウ材 ８ 口元部 ９ 封止部 １０ 断熱空間 １１ 開口部 DESCRIPTION OF SYMBOLS 1 Insulating container main body 2 Outer container 3 Inner container 4 Vacuum sealing plate 5 Adsorbent 6 Adsorbent holding container 7 Adhesive or low melting point brazing material 8 Mouth 9 Sealing 10 Heat insulating space 11 Opening
Claims (1)
化させて二重壁構造の本体を形成し、かつこれら内容器
と外容器との間の空間部を真空排気して、該空間部を断
熱層とする断熱容器の製造方法において、前記内容器を
金属製薄肉容器で形成し、外容器を合成樹脂製の容器で
形成するとともに、前記内容器の底部に吸着剤を配した
吸着剤保持容器を設け、また、前記外容器底部に排気用
開口部を形成して、これらを接合・一体化させ断熱容器
本体を形成し、これらを真空系内に収容して真空排気処
理しつつ、金属製内容器をベーキング処理し、その際の
熱輻射によって合成樹脂製外容器をも同時に加熱し、脱
ガス処理を行なう一方、金属製内容器の内部より加熱し
て吸着剤を活性化処理し、次いで真空封止板にて外容器
底部の開口部を封止して、断熱層内を１０-5Ｔｏｒｒ以
下の高真空度に保持することを特徴とする断熱容器の製
造方法。1. An inner container and an outer container are integrated by mouth joining to form a main body having a double-walled structure, and a space between the inner container and the outer container is evacuated, In a method for manufacturing a heat insulating container having a space portion as a heat insulating layer, the inner container is formed of a thin metal container, the outer container is formed of a synthetic resin container, and an adsorbent is arranged on the bottom of the inner container. An adsorbent holding container is provided, and an exhaust opening is formed at the bottom of the outer container, and these are joined and integrated to form a heat-insulating container body, which is housed in a vacuum system and vacuum exhausted. At the same time, the metal inner container is baked and the synthetic resin outer container is also heated by the heat radiation at the same time to perform degassing, while the inner metal container is heated to activate the adsorbent. Processed, then sealed with a vacuum sealing plate at the bottom of the outer container Then, the inside of the heat insulating layer is maintained at a high degree of vacuum of 10 −5 Torr or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19220391A JPH05176846A (en) | 1991-07-31 | 1991-07-31 | Production of heat-insulated vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19220391A JPH05176846A (en) | 1991-07-31 | 1991-07-31 | Production of heat-insulated vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05176846A true JPH05176846A (en) | 1993-07-20 |
Family
ID=16287388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19220391A Pending JPH05176846A (en) | 1991-07-31 | 1991-07-31 | Production of heat-insulated vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05176846A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107380740A (en) * | 2017-07-01 | 2017-11-24 | 佛山市铠斯钛科技有限公司 | A kind of efficient cool-bag manufacture method and its cool-bag of manufacture |
-
1991
- 1991-07-31 JP JP19220391A patent/JPH05176846A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107380740A (en) * | 2017-07-01 | 2017-11-24 | 佛山市铠斯钛科技有限公司 | A kind of efficient cool-bag manufacture method and its cool-bag of manufacture |
| CN107380740B (en) * | 2017-07-01 | 2019-08-06 | 佛山市铠斯钛科技有限公司 | A kind of efficient cool-bag manufacturing method and its cool-bag of manufacture |
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