JP5423552B2 - Insulated container - Google Patents

Insulated container Download PDF

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JP5423552B2
JP5423552B2 JP2010089795A JP2010089795A JP5423552B2 JP 5423552 B2 JP5423552 B2 JP 5423552B2 JP 2010089795 A JP2010089795 A JP 2010089795A JP 2010089795 A JP2010089795 A JP 2010089795A JP 5423552 B2 JP5423552 B2 JP 5423552B2
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container
heat insulating
thermal adhesive
synthetic resin
diameter cylindrical
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JP2011219126A (en
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悠 小林
育男 三浦
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Thermos KK
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Thermos KK
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Description

本発明は、断熱マグや魔法瓶などの断熱容器に関するものである。   The present invention relates to a heat insulating container such as a heat insulating mug or a thermos.

従来、この種のものは、内容器と外容器とを空間を隔てて配設し、前記内容器と前記外容器の互いの端部を接合することにより一体化した断熱容器があり、排気孔をろう材で封止した封止部に別部材であるカバーシートを貼着したり（例えば、特許文献１）、または別部材である保護板を接着剤を用いて貼り付けて、ろう材の保護と、外観性の向上を図っていた。   Conventionally, this type has a heat insulating container in which an inner container and an outer container are arranged with a space between them and an end portion of the inner container and the outer container are joined together, and an exhaust hole A cover sheet, which is a separate member, is attached to the sealing portion sealed with a brazing material (for example, Patent Document 1), or a protective plate, which is a separate member, is attached using an adhesive. It was intended to improve protection and appearance.

特開２０００−３１６７２９号公報JP 2000-316729 A

しかしながら、従来のシールや接着剤では、実際の使用や洗浄において接着不足や耐久性の問題により、剥がれが発生していた。なお、接着剤の接着力や耐久性を向上させるためプラズマ処理、ＵＶ処理、コロナ処理などの活性ガスによる表面処理、酸浸漬や陽極酸化などの薬品処理、シランカップリング剤やチオール系カップリング剤などのプライマー処理といった種々の方法が取られる。しかし、活性ガスによる表面処理では十分な改善が見られなかったり、また、いずれの方法も工程追加による製造コストの上昇があった。   However, in conventional seals and adhesives, peeling occurred due to insufficient adhesion and durability problems during actual use and cleaning. In order to improve the adhesive strength and durability of the adhesive, surface treatment with active gas such as plasma treatment, UV treatment, corona treatment, chemical treatment such as acid dipping and anodic oxidation, silane coupling agent and thiol coupling agent Various methods such as primer treatment are employed. However, the surface treatment with the active gas has not been improved sufficiently, and any of the methods has increased manufacturing costs due to the addition of processes.

そこで、本願発明は上記した問題点に鑑み、別部材の剥がれ難い断熱容器を安価で提供することを目的とする。   Therefore, in view of the above-described problems, the present invention has an object to provide a heat-insulating container in which another member is difficult to peel off at a low cost.

請求項１の発明の断熱容器では、内容器と外容器とを空間を隔てて配設し、前記内容器と前記外容器の互いの端部を接合することにより一体化した断熱容器において、前記外容器の外底板部に小径円筒凹部と大径円筒凹部を設けると共に、前記小径円筒凹部に排気孔を設けてろう材で封止し、前記大径円筒凹部に保護板をフィルム状に形成された変性ポリオレフィン製熱接着剤で密着し、前記変性ポリオレフィン製熱接着剤の熱処理温度が９０〜２２０℃であり、前記変性ポリオレフィン製熱接着剤の厚みが３０〜２００μｍであり、前記変性ポリオレフィン製熱接着剤が再加熱により剥がすことができることを特徴とする。 In the heat insulating container of the invention of claim 1, in the heat insulating container integrated by disposing the inner container and the outer container with a space therebetween and joining the end portions of the inner container and the outer container. A small-diameter cylindrical recess and a large-diameter cylindrical recess are provided in the outer bottom plate portion of the outer container, and an exhaust hole is provided in the small-diameter cylindrical recess and sealed with a brazing material. A protective plate is formed in the large-diameter cylindrical recess as a film. The modified polyolefin thermal adhesive has a heat treatment temperature of 90 to 220 ° C., the modified polyolefin thermal adhesive has a thickness of 30 to 200 μm, and the modified polyolefin thermal adhesive. It is characterized in that the adhesive can be removed by reheating .

本発明の請求項１記載の発明によれば、合成樹脂製熱接着剤が加熱溶融と加圧により、合成樹脂製熱接着剤が容器と別部材との隙間を埋め、別部材を密着させることができる。   According to the first aspect of the present invention, the synthetic resin thermal adhesive fills the gap between the container and the separate member by heat melting and pressurizing, thereby bringing the separate member into close contact with each other. Can do.

本発明の請求項１記載の発明によれば、合成樹脂製熱接着剤に変性ポリオレフィンを用いているので樹脂もしくは金属を、優れた耐久性で強力に接着することができる。   According to the first aspect of the present invention, since the modified polyolefin is used for the synthetic resin thermal adhesive, the resin or metal can be strongly bonded with excellent durability.

本発明の請求項１記載の発明によれば、断熱容器、別部材またはそれらを構成する材料に影響のない温度で処理することができる。 According to the invention of claim 1, wherein the present invention can be processed at temperatures no influence on the material constituting the heat insulating container, another member or them.

本発明の請求項１記載の発明によれば、被着体の間に合成樹脂製熱接着剤を配置して加熱するだけで接着できるので作業性がよい。また合成樹脂製熱接着剤は断熱容器または別部材の変形を吸収できる十分な厚さを持っているので、断熱容器と別部材の隙間を埋め密着させることができる。 According to the first aspect of the present invention, since a synthetic resin thermal adhesive is placed between the adherends and can be bonded by heating, workability is good. Moreover, since the synthetic resin-made thermal adhesive has a sufficient thickness to absorb the deformation of the heat insulating container or the separate member, the gap between the heat insulating container and the separate member can be filled and adhered.

本発明の断熱容器の実施例１を示す断面図である。It is sectional drawing which shows Example 1 of the heat insulation container of this invention. 同上、容器の底側を上向きとした断面図である。It is sectional drawing which made the bottom side of the container upward. 同上、外容器を底側から見た分解斜視図である。FIG. 3 is an exploded perspective view of the outer container as seen from the bottom side. 本発明の断熱容器の参考例１を示す断面図である。It is sectional drawing which shows the reference example 1 of the heat insulation container of this invention.

本発明における好適な実施の形態について、添付図面を参照して説明する。尚、以下に説明する実施の形態は、特許請求の範囲に記載された本発明の内容を限定するものではない。また、以下に説明される構成の全てが、本発明の必須要件であるとは限らない。   Preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention.

図１〜図３は本発明の断熱容器の実施例１を示しており、同図において真空構造体としてのマグや魔法瓶などの断熱二重容器は、内筒部１の底に内底板部２を有する内容器３と、外筒部４の底に外底板部５を有する外容器６とを、それぞれの上部口部７を接合したものであり、内容器３と外容器６はそれぞれステンレス鋼、例えば１８−８ステンレス鋼によって形成されている。そして、内容器３と外容器６との間隙は真空断熱空間８が形成されているものであり、これは外筒部４の中央に形成し内外を連通した排気孔９を介して真空断熱空間８の間隙を排気した後、ろう材10によって封止したものである。尚、内容器３の真空断熱空間８側の面又は及び外容器６の真空断熱空間８側の面にはゲッター（図示せず）が装着している。 1 to 3 show a first embodiment of a heat insulating container according to the present invention. In the figure, a heat insulating double container such as a mug or a thermos as a vacuum structure has an inner bottom plate portion 2 at the bottom of the inner cylindrical portion 1. the inner vessel 3 having, an outer container 6 with an outer bottom plate 5 on the bottom of the outer tubular portion 4 is obtained by joining each of the upper portions mouth 7, respectively inner container 3 the outer container 6 is stainless It is made of steel, for example 18-8 stainless steel. A gap between the inner container 3 and the outer container 6 forms a vacuum heat insulating space 8, which is formed in the center of the outer cylinder portion 4 through an exhaust hole 9 that communicates the inside and the outside. 8 is evacuated and then sealed with a brazing material 10. A getter (not shown) is attached to the surface of the inner container 3 on the vacuum heat insulating space 8 side or the surface of the outer container 6 on the vacuum heat insulating space 8 side.

外底板部５に小孔状の排気孔９が形成されており、この排気孔９の周囲は平面を円形として断熱空間８側に凹に形成されている。そして上下に二段状の凹部は、最深部に排気孔９が形成された幅狭凹部である小径の円筒凹部11（以下、小径円筒凹部11と呼称する）と、この小径円筒凹部11と外底板部５の表面との間に形成される幅大凹部である大径の円筒凹部12（以下、大径円筒凹部12と呼称する）を有する二段状の円筒からなる。 A small hole-like exhaust hole 9 is formed in the outer bottom plate portion 5, and the periphery of the exhaust hole 9 is formed in a concave shape on the heat insulation space 8 side with a circular plane. The upper and lower recesses have a small-diameter cylindrical recess 11 (hereinafter referred to as a small-diameter cylindrical recess 11), which is a narrow recess in which the exhaust hole 9 is formed in the deepest portion, and the small-diameter cylindrical recess 11 and the outer It consists of a two-stage cylinder having a large-diameter cylindrical recess 12 (hereinafter referred to as a large-diameter cylindrical recess 12) that is a wide recess formed between the surface of the bottom plate portion 5.

小径円筒凹部11に充填されたろう材10によって、排気孔９を封止した封止部13が形成されている。前記ろう材10は、金属もしくはガラス製ろう材である。   A sealing portion 13 that seals the exhaust hole 9 is formed by the brazing material 10 filled in the small-diameter cylindrical recess 11. The brazing material 10 is a metal or glass brazing material.

大径円筒凹部12には、底面視略ドーナツ状の底面14（以下、大径底面14と呼称する）に遊嵌するように円板状に形成された保護板15が変性ポリオレフィン等の合成樹脂製熱接着剤16を介して接着面である大径底面14に接着されている。前記保護板15は、内容器３と外容器６同様のステンレス鋼、例えば１８−８ステンレス鋼等の金属製である。   The large-diameter cylindrical recess 12 has a protective plate 15 formed in a disc shape so as to be loosely fitted to a bottom surface 14 (hereinafter referred to as the large-diameter bottom surface 14) that is substantially donut-shaped when viewed from the bottom. It is bonded to a large-diameter bottom surface 14 which is an adhesive surface through a heat-producing adhesive 16. The protective plate 15 is made of stainless steel, such as 18-8 stainless steel, similar to the inner container 3 and the outer container 6.

以上の構成の金属製真空断熱容器において、厚さＤを３０〜２００μｍのフィルム状に形成された合成樹脂製熱接着剤16は、９０〜２２０℃の熱処理により加熱溶融と加圧により、合成樹脂製熱接着剤16が大径底面14と保護板15の隙間を完全に埋めて、保護板15を大径底面14に密着させることができるため、保護板15と断熱容器間に水が浸入せず、金属腐食や、金属腐食による断熱性能の低下がない。   In the metal vacuum insulation container having the above configuration, the synthetic resin thermal adhesive 16 formed in a film shape with a thickness D of 30 to 200 μm is heated and melted and pressurized by heat treatment at 90 to 220 ° C. Since the heat-adhesive 16 can completely fill the gap between the large-diameter bottom surface 14 and the protective plate 15, and the protective plate 15 can be brought into close contact with the large-diameter bottom surface 14, water can enter between the protective plate 15 and the heat insulating container. In addition, there is no metal corrosion or deterioration of the heat insulation performance due to metal corrosion.

合成樹脂性熱接着剤16に変性ポリオレフィンを用いているので樹脂もしくは金属を、優れた耐久性で強力に接着させることができる。   Since the modified polyolefin is used for the synthetic resinous thermal adhesive 16, the resin or metal can be strongly bonded with excellent durability.

さらに、断熱容器の外容器６と、別部材である保護板15のうちどちらかが樹脂製の場合には、合成樹脂製熱接着剤16と断熱容器及び保護板15との相溶性がよく、強力に接着することができる。   Furthermore, when one of the outer container 6 of the heat insulating container and the protective plate 15 which is a separate member is made of resin, the synthetic resin thermal adhesive 16 and the heat insulating container and the protective plate 15 have good compatibility. Can be strongly bonded.

さらに、断熱容器の内容器３、外容器６、および保護板15を金属製としても、熱処理温度を９０〜２２０℃とすることで、断熱容器、保護板15またはそれらを構成する材料に影響のない温度で処理することができる。   Furthermore, even if the inner container 3, the outer container 6, and the protective plate 15 of the heat insulating container are made of metal, by setting the heat treatment temperature to 90 to 220 ° C., the heat insulating container, the protective plate 15 or the material constituting them is affected. Can be processed at no temperature.

また、接着された合成樹脂製熱接着剤16は、再加熱することにより簡単に剥がすことができる。そのため再加熱による容易な再処理が可能となる。   The bonded synthetic resin thermal adhesive 16 can be easily peeled off by reheating. Therefore, easy reprocessing by reheating becomes possible.

以上のように本実施例は請求項１に対応しており、内容器３と外容器６とを真空断熱空間８を隔てて配設し、内容器３と外容器６の互いの端部たる口部７を接合することにより一体化した断熱容器において、断熱容器と別部材である保護板15を合成樹脂製熱接着剤16で密着している。この場合、合成樹脂製熱接着剤16が加熱溶融と加圧により、接着剤16が外容器６と保護板15との隙間を埋め、保護板15を外容器６に密着させることができる。   As described above, this embodiment corresponds to claim 1, and the inner container 3 and the outer container 6 are disposed with the vacuum heat insulating space 8 therebetween, and are the ends of the inner container 3 and the outer container 6. In the heat insulating container integrated by joining the mouth portion 7, a protective plate 15, which is a separate member from the heat insulating container, is closely attached by a synthetic resin thermal adhesive 16. In this case, when the synthetic resin thermal adhesive 16 is heated and melted and pressurized, the adhesive 16 fills the gap between the outer container 6 and the protective plate 15, and the protective plate 15 can be brought into close contact with the outer container 6.

また、本実施例は請求項１に対応しており、合成樹脂製熱接着剤16が変性ポリオレフィンであることにより、樹脂もしくは金属を、優れた耐久性で強力に接着することができる。   Further, this example corresponds to claim 1 and, since the synthetic resin thermal adhesive 16 is a modified polyolefin, the resin or metal can be strongly bonded with excellent durability.

さらに、本実施例は請求項１に対応しており、合成樹脂製熱接着剤16の熱処理温度が９０〜２２０℃であることにより、断熱容器、保護板15またはそれらを構成する材料に影響のない温度で処理することができる。尚、合成樹脂製熱接着剤16の熱処理温度が９０℃より低いと、合成樹脂製熱接着剤16が溶けず十分な接着力が得られないという問題がある。また、前記熱処理温度が２２０℃より高いと、ろう材10への熱影響による封止不良が生じたり、断熱容器もしくは保護板15のどちらかが樹脂製の場合には熱による変形や歪みが生じるという問題がある。断熱容器や別部材への熱影響を小さくし、十分な接着力を得るという観点から、熱処理温度は好ましくは１００〜１８０℃である。 Further, this embodiment corresponds to claim 1 , and the heat treatment temperature of the synthetic resin thermal adhesive 16 is 90 to 220 ° C., which affects the heat insulating container, the protective plate 15 or the material constituting them. Can be processed at no temperature. When the heat treatment temperature of the synthetic resin thermal adhesive 16 is lower than 90 ° C., there is a problem that the synthetic resin thermal adhesive 16 does not melt and a sufficient adhesive force cannot be obtained. Further, when the heat treatment temperature is higher than 220 ° C., sealing failure due to the heat effect on the brazing material 10 occurs, or when either the heat insulating container or the protective plate 15 is made of resin, deformation or distortion due to heat occurs. There is a problem. The heat treatment temperature is preferably 100 to 180 ° C. from the viewpoint of reducing the thermal influence on the heat insulating container and other members and obtaining sufficient adhesive force.

また、本実施例は請求項１に対応しており、合成樹脂製熱接着剤16の厚みＤが３０〜２００μｍであることにより、被着体である断熱容器の外容器６と保護板15の間に合成樹脂製熱接着剤16を配置して加熱するだけで接着できるので作業性がよい。また合成樹脂製熱接着剤16は断熱容器または別部材の変形を吸収できる十分な厚さＤを持っているので、断熱容器の外容器６と保護板15の隙間を埋め密着させることができる。尚、合成樹脂製熱接着剤16の厚みＤが３０μｍより小さいと、断熱容器の外容器６あるいは保護板15の歪みによって生じる隙間を埋めることができず密着させることができないという問題がある。また、前記厚みＤが２００μｍより大きいと、溶けた合成樹脂製熱接着剤16が断熱容器の外容器６と保護板15の間から押し出され外観をきれいに保てないという問題がある。
（参考例１）
図４は、参考例１を示しており、前記実施例１と同一部分には同一符号を付し、その詳細な説明を省略する。参考例１では、断熱容器の外筒部４に別部材としてすべり止め材17を合成樹脂製接着剤16を介して接着したものである。 Further, this embodiment corresponds to claim 1 , and the thickness D of the synthetic resin thermal adhesive 16 is 30 to 200 μm, so that the outer container 6 and the protective plate 15 of the heat insulating container as the adherend are adhered. Since the synthetic resin thermal adhesive 16 is placed between them and they can be bonded simply by heating, workability is good. Since the synthetic resin thermal adhesive 16 has a sufficient thickness D that can absorb deformation of the heat insulating container or another member, the gap between the outer container 6 of the heat insulating container and the protective plate 15 can be filled and brought into close contact. If the thickness D of the synthetic resin thermal adhesive 16 is smaller than 30 μm, there is a problem that the gap caused by the distortion of the outer container 6 or the protection plate 15 of the heat insulating container cannot be filled and cannot be adhered. On the other hand, if the thickness D is greater than 200 μm, the melted synthetic resin thermal adhesive 16 is pushed out from between the outer container 6 and the protective plate 15 of the heat insulating container, and the appearance cannot be kept clean.
(Reference Example 1)
FIG. 4 shows Reference Example 1. The same parts as those in Example 1 are denoted by the same reference numerals, and detailed description thereof is omitted. In Reference Example 1 , an anti-slip material 17 is bonded to the outer cylinder portion 4 of the heat insulating container via a synthetic resin adhesive 16 as a separate member.

すべり止め材17は、外面にすべり止め用の凹凸部18を有する合成樹脂製の帯状部材からなり、外筒部４の全周を覆うように装着されている。   The anti-slip material 17 is made of a synthetic resin belt-like member having an anti-slip uneven portion 18 on the outer surface, and is mounted so as to cover the entire circumference of the outer cylinder portion 4.

本参考例では、合成樹脂製接着剤16を変性ポリオレフィンとすることで、外容器６を金属製とし、すべり止め材17を樹脂製とする異素材同士を強力に接着することができる。 In this reference example , by using the synthetic resin adhesive 16 as a modified polyolefin, different materials having the outer container 6 made of metal and the antiskid material 17 made of resin can be strongly bonded to each other.

以上のように本参考例では請求項１に対応しており、内容器３と外容器６とを真空断熱空間８を隔てて配設し、内容器３と外容器６の互いの端部たる口部７を接合することにより一体化した断熱容器において、断熱容器と別部材であるすべり止め材17を合成樹脂製熱接着剤16で密着したことにより、合成樹脂製熱接着剤16が加熱溶融と加圧により、接着剤16が外容器６とすべり止め材17との隙間を埋め、すべり止め材17を外容器６に密着させることができる。   As described above, this reference example corresponds to claim 1, and the inner container 3 and the outer container 6 are disposed with the vacuum heat insulating space 8 therebetween, and are the end portions of the inner container 3 and the outer container 6. In the heat insulating container integrated by joining the mouth portion 7, the non-slip material 17 which is a separate member from the heat insulating container is adhered by the synthetic resin thermal adhesive 16, so that the synthetic resin thermal adhesive 16 is heated and melted. By pressurizing, the adhesive 16 fills the gap between the outer container 6 and the anti-slip material 17, and the anti-slip material 17 can be brought into close contact with the outer container 6.

本発明は、上記各実施例に限定されるものではなく、本発明の要旨の範囲内で種々の変形実施が可能である。例えば、外容器６の外筒部４や外底板部５に装飾用に樹脂製又は金属製からなる別部材を本発明の合成樹脂製熱接着剤16により接着するものとしてもよい。   The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the gist of the present invention. For example, another member made of resin or metal for decoration may be bonded to the outer cylinder portion 4 or the outer bottom plate portion 5 of the outer container 6 with the synthetic resin thermal adhesive 16 of the present invention.

以上のように本発明に係る断熱容器は、各種の用途に適用できる。   As described above, the heat insulating container according to the present invention can be applied to various uses.

３ 内容器
５ 外底板部
６ 外容器
７ 口部
９ 排気孔
10 ろう材
11 小径円筒凹部
12 大径円筒凹部
15 保護板（別部材）
16 合成樹脂製熱接着剤（変性ポリオレフィン製熱接着剤）
3 Inner container
5 Outer bottom plate part 6 Outer container 7 mouth part
9 Exhaust hole
10 Brazing material
11 Small-diameter cylindrical recess
12 Large diameter cylindrical recess
15 Protection plate (separate member)
16 Synthetic resin thermal adhesive (modified polyolefin thermal adhesive)

Claims (1)

内容器と外容器とを空間を隔てて配設し、前記内容器と前記外容器の互いの端部を接合することにより一体化した断熱容器において、前記外容器の外底板部に小径円筒凹部と大径円筒凹部を設けると共に、前記小径円筒凹部に排気孔を設けてろう材で封止し、前記大径円筒凹部に保護板をフィルム状に形成された変性ポリオレフィン製熱接着剤で密着し、
前記変性ポリオレフィン製熱接着剤の熱処理温度が９０〜２２０℃であり、前記変性ポリオレフィン製熱接着剤の厚みが３０〜２００μｍであり、前記変性ポリオレフィン製熱接着剤が再加熱により剥がすことができることを特徴とする断熱容器。 In a heat insulating container in which an inner container and an outer container are arranged with a space therebetween and integrated by joining the end portions of the inner container and the outer container, a small-diameter cylindrical recess is formed in the outer bottom plate portion of the outer container. And a large-diameter cylindrical recess, an exhaust hole is provided in the small-diameter cylindrical recess and sealed with a brazing material, and a protective plate is adhered to the large-diameter cylindrical recess with a modified polyolefin thermal adhesive. ,
The heat treatment temperature of the modified polyolefin thermal adhesive is 90 to 220 ° C., the thickness of the modified polyolefin thermal adhesive is 30 to 200 μm, and the modified polyolefin thermal adhesive can be peeled off by reheating. Insulated container characterized by.
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