JPH046902Y2 - - Google Patents
Info
- Publication number
- JPH046902Y2 JPH046902Y2 JP1986013936U JP1393686U JPH046902Y2 JP H046902 Y2 JPH046902 Y2 JP H046902Y2 JP 1986013936 U JP1986013936 U JP 1986013936U JP 1393686 U JP1393686 U JP 1393686U JP H046902 Y2 JPH046902 Y2 JP H046902Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- metal foil
- layer
- resin composition
- induction heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011888 foil Substances 0.000 claims description 28
- 229910052751 metal Inorganic materials 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 20
- 229920006015 heat resistant resin Polymers 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000006698 induction Effects 0.000 claims description 14
- 239000004840 adhesive resin Substances 0.000 claims description 10
- 229920006223 adhesive resin Polymers 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 239000011342 resin composition Substances 0.000 claims description 7
- 239000010410 layer Substances 0.000 description 44
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 229920013716 polyethylene resin Polymers 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920012753 Ethylene Ionomers Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000379 polypropylene carbonate Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
Landscapes
- Closures For Containers (AREA)
- Laminated Bodies (AREA)
- Packages (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
この考案は例えば食料品を充填したガラス容器
等を密封するための蓋材、特に高周波誘導加熱法
により容器の開口部にシールされる蓋材に関す
る。[Detailed Description of the Invention] Industrial Application Field This invention relates to a lidding material for sealing, for example, a glass container filled with foodstuffs, and particularly to a lidding material that is sealed to the opening of the container using a high-frequency induction heating method.
従来の技術
例えば粉体、液体、流動体の食品、あるいは薬
品等を充填したびん等の容器に蓋材を取付けてこ
れを密封包装する場合、熱接着性樹脂組成物層を
有する蓋材を容器開口部にヒートシールにより接
着する方法が従来より行われている。そしてかか
る蓋材の構成として、アルミニウム箔等の金属箔
の下面にポリエチレン樹脂層を介して熱接着性樹
脂組成物層が付着形成される一方、金属箔の上面
にはポリエチレン樹脂層を介して上質紙層が被覆
形成されたものが一般に用いられていた。Conventional technology For example, when attaching a lid to a container such as a bottle filled with powder, liquid, fluid food, medicine, etc. and sealing the container, the lid having a thermoadhesive resin composition layer is attached to the container. Conventionally, a method of adhering to the opening by heat sealing has been used. The structure of such a lid material is such that a heat-adhesive resin composition layer is attached to the bottom surface of a metal foil such as aluminum foil via a polyethylene resin layer, and a high-quality resin composition layer is attached to the top surface of the metal foil via a polyethylene resin layer. Those coated with a paper layer were generally used.
しかしながらかかる構成の蓋材では、特に高周
波誘導加熱法により蓋材を容器に接着する場合次
のような欠点を生じるものであつた。 However, such a lid material has the following drawbacks, particularly when the lid material is bonded to a container using a high-frequency induction heating method.
考案が解決しようとする問題点
即ち、高周波誘導加熱法では金属箔を発熱体と
してその裏面側に形成された熱接着性樹脂組成物
層を容器開口部に熱接着せしめるが、この高周波
誘導加熱法の特性として、金属箔の周端部に電流
が集中し、該周端部が特に温度上昇を来たすた
め、金属箔の表や裏に積層されたポリエチレン、
紙層の周端部が焦げ易いという問題があつた。ま
た焦げを生じないようにするためには、金属箔の
周端温度上昇を抑制しなければならず、そうする
と熱接着性樹脂組成物として使用可能な材料の範
囲も必然的に限定され、例えばホツトメルトタイ
プのような低温シール性に優れた樹脂しか使用で
きないというような欠点を派生するものであつ
た。Problems that the invention aims to solve Namely, in the high-frequency induction heating method, a heat-adhesive resin composition layer formed on the back side of the metal foil is thermally bonded to the opening of the container using a metal foil as a heating element. As a characteristic of the metal foil, the current concentrates at the peripheral edge of the metal foil, which causes a particular temperature rise, so polyethylene laminated on the front and back sides of the metal foil,
There was a problem that the peripheral edge of the paper layer was easily scorched. In addition, in order to prevent scorching, it is necessary to suppress the temperature rise at the peripheral edge of the metal foil, which inevitably limits the range of materials that can be used as a thermoadhesive resin composition. This resulted in the disadvantage that only melt-type resins with excellent low-temperature sealing properties could be used.
この考案はかかる事情に鑑みてなされたもので
あつて、高周波誘導加熱シール時に金属箔の周端
部の温度が上昇した場合においても蓋材に焦げを
生じることがなく、しかも熱接着性樹脂組成物と
して低温シール性に劣る樹脂をも使用できる高周
波誘導加熱シール用蓋材の提供を目的とするもの
である。 This idea was made in view of the above circumstances, and even if the temperature at the peripheral edge of the metal foil rises during high-frequency induction heating sealing, the lid material will not be scorched, and it is made of a thermoadhesive resin. The object of the present invention is to provide a lid material for high-frequency induction heating sealing, which allows the use of resins that have poor low-temperature sealing properties.
問題点を解決するための手段
上記目的においてこの考案は、金属箔の下面に
ポリエチレン樹脂層等を介在させることなく熱接
着性樹脂組成物層を付着形成する一方で、金属箔
の上面には耐熱性樹脂層を介して紙層を付着成形
せしめ、該耐熱性樹脂層をもつて紙層への熱伝達
を抑制しようとするものである。Means for Solving the Problems For the above purpose, this invention forms a heat-adhesive resin composition layer on the bottom surface of the metal foil without intervening a polyethylene resin layer, while the heat-resistant resin composition layer is formed on the top surface of the metal foil. In this method, a paper layer is attached and molded via a heat-resistant resin layer, and the heat transfer to the paper layer is suppressed using the heat-resistant resin layer.
すなわちこの考案は、発熱用金属箔の下面に熱
接着性樹脂組成物層が付着形成される一方、同上
面に耐熱性樹脂層が付着形成され、さらにその上
に紙層が付着形成されてなる積層構造を有するこ
とを特徴とする高周波誘導加熱シール用蓋材を要
旨とするものである。 That is, in this device, a heat-adhesive resin composition layer is attached to the lower surface of the heat-generating metal foil, a heat-resistant resin layer is attached to the upper surface of the same, and a paper layer is further attached and formed thereon. The gist of the present invention is a lid material for high-frequency induction heating sealing, which is characterized by having a laminated structure.
実施例
次にこの考案の構成を図示実施例に基いて説明
する。Embodiments Next, the configuration of this invention will be explained based on illustrated embodiments.
第１図において、蓋材１は、金属箔２の下面に
熱接着性樹脂組成物層３が付着形成されるととも
に、金属箔２の上面に接着剤層４を介して耐熱性
樹脂層５が被覆形成され、さらにこの耐熱性樹脂
層５の上面に接着剤層６を介して紙層７が被覆形
成されてなる。 In FIG. 1, the lid material 1 has a heat-adhesive resin composition layer 3 adhered to the lower surface of the metal foil 2, and a heat-resistant resin layer 5 formed on the upper surface of the metal foil 2 via an adhesive layer 4. A paper layer 7 is further formed on the upper surface of the heat-resistant resin layer 5 via an adhesive layer 6.
前記金属箔２は既述のとおり、高周波誘導加熱
の手段で蓋材を容器開口部にヒートシールする際
に、発熱体として機能せしめるためのものであ
り、好適には厚さ５〜100μｍ程度、特に好まし
くは10〜50μｍのアルミニウム箔、銅箔などが用
いられているが、もちろん他の種類の金属からな
るものを用いても良い。 As mentioned above, the metal foil 2 is used to function as a heating element when the lid is heat-sealed to the opening of the container by means of high-frequency induction heating, and preferably has a thickness of about 5 to 100 μm. Particularly preferably, aluminum foil or copper foil with a thickness of 10 to 50 μm is used, but it is of course possible to use other types of metal.
熱接着性樹脂組成物層３は、高周波誘導加熱に
よつて蓋材１を容器の開口部に密封状態に熱接着
するためのものであり、従来のホツトメルトタイ
プ樹脂のような低温シール性に優れた樹脂はもち
ろんのこと、エチレン−酢酸ビニル共重合体、ア
イオノマー系樹脂等のような低温シール特性が概
して良くない樹脂をも何ら問題なく使用でき、従
つて公知の熱接着性樹脂組成物を任意に使用でき
る。 The thermal adhesive resin composition layer 3 is for thermally bonding the lid material 1 to the opening of the container in a sealed state by high-frequency induction heating, and has low-temperature sealing properties like conventional hot melt type resins. Not only excellent resins, but also resins that generally have poor low-temperature sealing properties, such as ethylene-vinyl acetate copolymer and ionomer resins, can be used without any problems. Can be used arbitrarily.
前記耐熱性樹脂層５は高周波誘導加熱シール時
に金属箔２から生じる熱の紙層への伝達を抑制す
る熱バリアーとして機能するものである。耐熱性
樹脂層５の一例としては、ポリエステル、ナイロ
ン、ポリプロピレン、ポリカーボネートの各フイ
ルム等を挙げうる。もちろんこれらに限定される
ものではなく、他の耐熱性樹脂を任意に採用しう
る。この耐熱性樹脂層５の厚さは、５〜300μｍ
程度とするのが望ましい。5μｍ未満では熱の遮
断効果に乏しいものとなる虞があり、逆に300μ
ｍを超えると上記効果の格別な増大を期待しえ
ず、むしろ材料費が高くつく虞があるからであ
る。 The heat-resistant resin layer 5 functions as a thermal barrier that suppresses the transfer of heat generated from the metal foil 2 to the paper layer during high-frequency induction heating sealing. Examples of the heat-resistant resin layer 5 include polyester, nylon, polypropylene, and polycarbonate films. Of course, the resin is not limited to these, and other heat-resistant resins may be used as desired. The thickness of this heat-resistant resin layer 5 is 5 to 300 μm.
It is desirable that the If it is less than 5 μm, there is a risk that the heat shielding effect will be poor;
This is because if it exceeds m, the above effects cannot be expected to increase significantly, and there is a risk that the material cost will increase.
また蓋材２の最外層に設けられた前記紙層７
は、化粧用あるいは印刷用である。 Further, the paper layer 7 provided on the outermost layer of the lid material 2
is used for cosmetics or printing.
ところで上記蓋材２は、第２図に示すように、
これを容器１０の開口部１１の大きさに合わせて
打抜き成形したものを容器の上面に載せ、高周波
誘導加熱装置によつて金属箔２からの発熱を利用
して熱接着性樹脂組成物層３を容器開口部上縁に
熱接着せしめることにより容器１０に取着され
る。而して高周波誘導加熱時に金属箔２から発生
した熱の紙層７への伝達が耐熱性樹脂層５によつ
て遮られるから、紙層７に焦げが生じることはな
い。 By the way, as shown in FIG. 2, the lid material 2 has the following features:
This is punched and molded to match the size of the opening 11 of the container 10, and placed on the top of the container, and a high frequency induction heating device uses heat generated from the metal foil 2 to form a thermally adhesive resin composition layer 3. It is attached to the container 10 by thermally bonding it to the upper edge of the container opening. Since the transfer of heat generated from the metal foil 2 to the paper layer 7 during high-frequency induction heating is blocked by the heat-resistant resin layer 5, the paper layer 7 will not be scorched.
考案の効果
この考案の係る高周波誘導加熱シール用蓋材は
上述のように、発熱用金属箔の下面に熱接着性樹
脂組成物層が付着形成される一方、同上面に耐熱
性樹脂層が付着形成され、さらにその上に紙層が
付着形成されてなる積層構造を有するものである
から、シール時に金属箔の特に周端部が高温状態
となつても、前記積層構造中の各層に焦げが生じ
ないのはもとより、耐熱性樹脂層の外側の紙層へ
の伝熱が耐熱性樹脂層の熱バリヤー効果により抑
制され、紙層に焦げを生じることがなくなる。し
かも焦げを生じないから、シール時の金属箔の温
度上昇を抑制する必要がなくなり、従つて熱接着
性樹脂組成物として低温シール性に劣る樹脂組成
物をも使用可能となり、樹脂組成物の使用選択範
囲を広げうるというような効果をも有する。Effects of the invention As described above, in the lid material for high-frequency induction heating sealing according to this invention, a heat-adhesive resin composition layer is attached to the lower surface of the heat-generating metal foil, and a heat-resistant resin layer is attached to the upper surface of the same. Since the metal foil has a laminated structure in which a paper layer is adhered and formed on top of the metal foil, even if the peripheral edge of the metal foil becomes hot during sealing, each layer in the laminated structure will not be scorched. Not only does this not occur, but heat transfer to the paper layer outside the heat-resistant resin layer is suppressed by the thermal barrier effect of the heat-resistant resin layer, and the paper layer is not scorched. Moreover, since it does not cause scorching, there is no need to suppress the temperature rise of the metal foil during sealing, and therefore it is possible to use a resin composition with poor low-temperature sealing properties as a thermoadhesive resin composition. It also has the effect of widening the selection range.
第１図はこの考案に係る蓋材の一実施例を示す
拡大縦断面図、第２図は第１図の蓋材を容器に取
着した状態の縦断面図である。
１……蓋材、２……金属箔、３……熱接着性樹
脂組成物層、５……耐熱性樹脂層、７……紙層。
FIG. 1 is an enlarged vertical cross-sectional view showing an embodiment of the lid material according to this invention, and FIG. 2 is a vertical cross-sectional view of the lid material of FIG. 1 attached to a container. DESCRIPTION OF SYMBOLS 1... Lid material, 2... Metal foil, 3... Heat-adhesive resin composition layer, 5... Heat-resistant resin layer, 7... Paper layer.
Claims (1)
が付着形成される一方、同上面に耐熱性樹脂層
が付着形成され、そらにその上に紙層が付着形
成されてなる積層構造を有することを特徴とす
る高周波誘導加熱シール用蓋材。 (2) 耐熱性樹脂層が５〜300μｍの厚さである実
用新案登録請求の範囲第１項に記載の高周波誘
導加熱シール用蓋材。[Claims for Utility Model Registration] (1) A heat-adhesive resin composition layer is adhered to the lower surface of the heat-generating metal foil, and a heat-resistant resin composition layer is adhered to the upper surface of the metal foil. A lid material for high-frequency induction heating sealing, characterized by having a laminated structure formed by adhering layers. (2) The lid material for high-frequency induction heating sealing according to claim 1, wherein the heat-resistant resin layer has a thickness of 5 to 300 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986013936U JPH046902Y2 (en) | 1986-01-31 | 1986-01-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986013936U JPH046902Y2 (en) | 1986-01-31 | 1986-01-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62126928U JPS62126928U (en) | 1987-08-12 |
| JPH046902Y2 true JPH046902Y2 (en) | 1992-02-25 |
Family
ID=30803459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986013936U Expired JPH046902Y2 (en) | 1986-01-31 | 1986-01-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH046902Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH072452Y2 (en) * | 1990-03-07 | 1995-01-25 | 大日本印刷株式会社 | Inner seal material for container mouth sealing |
| JPH072453Y2 (en) * | 1990-03-12 | 1995-01-25 | 大日本印刷株式会社 | Inner seal material for container mouth sealing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58112732A (en) * | 1981-12-26 | 1983-07-05 | 大日本印刷株式会社 | Laminated metallic vessel |
| JPS608033B2 (en) * | 1977-09-22 | 1985-02-28 | 工業技術院長 | Spilled oil adsorbent and its manufacturing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS608033U (en) * | 1983-06-30 | 1985-01-21 | 大日本印刷株式会社 | Lid body |
-
1986
- 1986-01-31 JP JP1986013936U patent/JPH046902Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS608033B2 (en) * | 1977-09-22 | 1985-02-28 | 工業技術院長 | Spilled oil adsorbent and its manufacturing method |
| JPS58112732A (en) * | 1981-12-26 | 1983-07-05 | 大日本印刷株式会社 | Laminated metallic vessel |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62126928U (en) | 1987-08-12 |
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