JP2004059081A - Drawed composite hermetic container - Google Patents

Drawed composite hermetic container Download PDF

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Publication number
JP2004059081A
JP2004059081A JP2002220809A JP2002220809A JP2004059081A JP 2004059081 A JP2004059081 A JP 2004059081A JP 2002220809 A JP2002220809 A JP 2002220809A JP 2002220809 A JP2002220809 A JP 2002220809A JP 2004059081 A JP2004059081 A JP 2004059081A
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JP
Japan
Prior art keywords
container
draw
molded
flange
paper
Prior art date
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Pending
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JP2002220809A
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Japanese (ja)
Inventor
Eishin Miyake
三宅 英信
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.)
Toppan Inc
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Toppan Printing Co Ltd
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Publication date
Application filed by Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Priority to JP2002220809A priority Critical patent/JP2004059081A/en
Publication of JP2004059081A publication Critical patent/JP2004059081A/en
Pending legal-status Critical Current

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  • Packages (AREA)
  • Closures For Containers (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To improve adhesiveness between a flange formed on an opening at the upper end of a container barrel and a lidding sheetlike lid material when lidding in a drawed composite hermetic container requiring sealability, and to improve sealability of a molded composite hermetic container. <P>SOLUTION: The draw-formed hermetic container consists of a drawed paper container A including a tubular barrel 1, a bottom 2, and a flange 7 overhanging along the entire circumference of the upper end opening of the barrel 1, and a molded plastic container B having a similar shape to the container A for covering the external surface of the container A and including a tubular barrel 11, a bottom 2, and a flange 17 along the entire circumference of the upper end opening of the barrel 11. Front and rear surfaces of the flange 7 of the container A are pinched between the flange 17 of the container B and a fold 18 extending from the flange 17 to be folded and applied with heat and pressure to have a flat lid material adhesive surface. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、容器成型用紙を用いてプレス成型した絞り成型紙容器の外面に、成型プラスチック容器を被覆した絞り成型複合密封容器に関する。
【0002】
【従来の技術】
従来のカップ状等の絞り成型紙容器や絞り成型複合容器など絞り成型容器は、平坦な1枚のカップ原紙など容器成型用紙や紙とプラスチックフィルム等を積層した複合成型用紙等を、雌型と雄型を用いてプレス成型して得られるものであるが、筒状胴部と底部とからなる成型容器の胴部には、特に深絞り方式による場合には、成型時の絞り成型皺が多数発生した状態になっており、また、皺が多数発生した状態の胴部上端の開口部外周に、シート状の蓋材を貼着して施蓋するための平坦なフランジ部を張り出して成型加工した場合に、そのフランジ部にも皺が多数発生した状態で成型される。
【0003】
また、上記皺が多数発生した状態の成型容器の胴部上端の開口部の全周に沿って、カップ状容器としては一般的なトップカール部を形成することは、胴部に発生した絞り成型皺のためにカール成型加工が困難であり、たとえカール成型加工ができたとしても、トップカール部は皺が多数発生した状態で成型される。
【0004】
【発明が解決しようとする課題】
このように、従来のカップ状絞り成型容器などの絞り成型容器は、胴部に発生した皺がフランジ部やトップカール部にも発生して、シート状蓋材をフランジ部やトップカール部に重ね合わせて接着剤層を介してヒートシールして貼着し施蓋した場合に、そのフランジ部やトップカール部に発生した皺による非平坦性によって、シート状蓋材とフランジ部やトップカール部との密着性や、また特に密封性が要求される絞り成型複合容器の施蓋による密封性が十分に得られないという問題がある。
【0005】
本発明は、密封性が要求される絞り成型複合密封容器において、容器の胴部上端部の開口部に形成されるフランジ部やトップカール部と、施蓋用シート状蓋材との施蓋時の密着性を向上させるとともに、成型複合密封容器の密封性を向上させることにある。
【0006】
【課題を解決するための手段】
本発明の請求項1に係る発明は、筒状胴部1と底部2と胴部1の上端開口部全周に張り出したフランジ部7とからなる絞り成型紙容器Aと、該成型紙容器Aに対して相似形状であって該成型紙容器Aの外面を覆う筒状胴部11と底部12と胴部11の上端開口部全周のフランジ部17からなる成型プラスチック容器Bとからなる絞り成型密封容器において、前記絞り成型紙容器Aのフランジ部7の表裏面が、成型プラスチック容器Bのフランジ部17と、該フランジ部17に延設され折り返されて加熱加圧にて平坦な蓋材密着面を有する折り返し部18とにより挟持されていることを特徴とする絞り成型複合密封容器である。
【0007】
本発明の請求項2に係る発明は、上記請求項1に係る絞り成型複合密封容器において、前記フランジ部7の表面に折り返されてヒートシールされた前記折り返し部18面上に施蓋用のシート状蓋材が重ね合わせられて密着シールされていることを特徴とする絞り成型複合密封容器である。
【0008】
本発明の請求項3に係る発明は、上記請求項1又は請求項2に係る絞り成型紙容器において、前記成型プラスチック容器Bが、絞り成型プラスチック容器であることを特徴とする絞り成型複合密封容器である。
【0009】
本発明の請求項4に係る発明は、上記請求項1又は請求項2に係る絞り成型紙容器において、前記成型プラスチック容器Bが、射出成型プラスチック容器であることを特徴とする絞り成型複合密封容器である。
【0010】
本発明の請求項5に係る発明は、上記請求項1乃至請求項4のいずれか1項に係る絞り成型紙容器において、前記絞り成型紙容器Aの外面と成型プラスチック容器Bの内面とが、互いに分離可能に非接着状態で密着していることを特徴とする絞り成型複合密封容器である。
【0011】
本発明の請求項6に係る発明は、上記請求項1乃至請求項4のいずれか1項に係る絞り成型紙容器において、前記絞り成型紙容器Aの外面と成型プラスチック容器Bの内面とが、互いに分離可能に隙間を有して離間していることを特徴とする絞り成型複合密封容器である。
【0012】
【発明の実施の形態】
本発明のカップ状絞り成型複合密封容器の実施の形態を、図1、図2に示す容器の側断面図に基づいて以下に詳細に説明する。
【0013】
本発明のカップ状絞り成型紙容器は、図1に示すように、容器内側の絞り成型紙容器Aと、該絞り成型紙容器Aに対して相似形状であって、該容器Aの外面を覆う容器外側の成型プラスチック容器Bとから構成されている。
【0014】
容器内側の絞り成型紙容器Aは、筒状胴部1と底部2と胴部1の上端開口部3全周に張り出したフランジ部7とからなり、絞り成型紙容器Aに対して相似形状の容器外側の成型プラスチック容器Bは、筒状胴部11と底部12と胴部11の上端開口部3全周に張り出したフランジ部17と該フランジ部17に折目17aを介して延設した折り返し部18とからなる。
【0015】
前記絞り成型紙容器Aのフランジ部7は、成型プラスチック容器Bのフランジ部17に重ね合わせられ、該フランジ部17の外端部には折目17aを介して折り返し部18が延設されていて、該折り返し部18は折目17aから前記容器Aのフランジ部7面上に折り返されて重ね合わせられ、その折り返し部18の重ね合わせ上面は加熱加圧にて平坦に形成され、容器Aのフランジ部7はフランジ部17と折り返し部18とにより挟持されている。
【0016】
上記絞り成型紙容器Aの絞り成型加工に使用する成型用紙としては、コートボール、カップ原紙、ノーコートアイボリー等の容器成形用原紙が使用でき、また必要に応じて、これら成形用原紙の容器内面側となる面には適宜にヒートシール用のシーラント層や耐水性層や撥水性層として、ポリエチレン、ポリプロピレン等のオレフィン系合成樹脂や、ポリエチレンテレフタレート系合成樹脂をラミネート又はコーティングすることができる。また、これら成形用原紙に金属蒸着フィルムや無機酸化物蒸着フィルム等のガスバリアフィルム又はアルミ箔などをラミネートした複合用紙でもよい。
【0017】
上記成型プラスチック容器Bの成型に使用するプラスチック材料としては、ポリエチレン、ポリプロピレン等のオレフィン系や、ポリエチレンテレフタレート系のプラスチック材料が使用でき、該容器Bの成型加工は、プラスチック成型金型とスクリュー押出、射出成型機を用いて射出成型方式により、又はプラスチックフィルムやシートを真空成型型やプレス型を用いて真空成型又は絞り成型機方式にて成型することができる。
【0018】
上記絞り成型紙容器Aの筒状胴部1の外周面には、後述するように縦方向に絞り成型による複数の成型皺が発生あり、該胴部1の成型皺のある上端縁をフランジ成型加工により外周方向に拡張して成型されるフランジ部7にも同様に絞り成型皺が残存している。
【0019】
上記絞り成型紙容器Aや成型プラスチック容器Bの底部2、12は、図示するように底上げされていない平坦底面を備えていてもよいし、僅かに底上げ状の底面(図示せず)を備えていてもよい。
【0020】
本発明の絞り成型複合容器を絞り成型工程に基づいて以下に説明すれば、図3に示すように、まず、絞り成型用紙として円形状の成型用紙11を準備する。
【0021】
円形状の成型用紙11には、その内側に同心円状に、容器の胴部1となる部分と底部2となる部分との境界となる円形折目11aが形成され、その胴部1となる部分には、用紙11外周から内方の円形折目線11aまで円の中心に向かう直線折目11bが放射状に形成され、円形折目線11aと直線折目11bとの交点から直線折目11bに対して所定角度となるように片側に偏位して傾斜する斜め直線折目11cが形成されている。
【0022】
なお成型する容器が上方に徐々に拡がるカップ(テーパー)形状の場合は、円形折目線11aと直線折目11bとの交点間の円弧長に対して、成型用紙11外周と直線折目11bとの交点間の円弧長を僅かに長めに設定し、円柱形状の場合は、両者の円弧長を同一に設定する。
【0023】
次に、図4に示すように、プレス成型方式の絞り成型手段12を用いて、そのプレス雌型部13と該プレス雌型部13真上に対峙するプレス雄型部14との空間部に、前記円形状成型用紙11を水平に載置する。なお、予め前記円形状成型用紙11には、なるべく規則的に折目に沿って折られて絞り成型されるように、各折目11a、11b、11cに沿って折り癖を付与しておくことが望ましい。
【0024】
プレス雌型部13は、上部開口部13aと逆円錐台筒形状の内壁面13bと底上げ用の凸部(又は底上げ用の凸部の無い平坦面)を設けた内底面13cとにより構成され、プレス雄型部14は前記プレス雌型部13内に嵌入可能な逆円錐台形状となっていて、空圧又は油圧シリンダー等による適宜なアクチュエータにて昇降動作でき、プレス雌型部13内に嵌入・離脱可能になっている。
【0025】
続いて、絞り成型手段12のプレス雄型部14がアクチュエータの駆動により下降動作して、該プレス雌型部13とプレス雄型部14との空間部に載置された成型用紙11を上面よりプレスしながら、プレス雌型部13内に嵌入させて、図4及び図5の部分斜視図に示すように成型用紙11を円形折目11aと放射状の直線折目11b、傾め直線折目11cに沿って折り曲げながら絞り成型し、縦方向に複数本の絞り成型皺4aの発生した逆円錐台筒形状の胴部1と、底部2と、胴部1の上部開口部3とを備えたカップ状の絞り成型紙容器Aに成型する。
【0026】
成型後は、絞り成型手段12のプレス雄型部14は、アクチュエータの上昇駆動により、プレス雌型部13内から離脱させる。
【0027】
図4に示すカップ状の絞り成型紙容器Aの開口部3となる成型皺4aの発生した胴部1の上端部の全周には、図1に示すように、施蓋用のシート状蓋材Cを重ね合わせて密着シールするための蓋材密着面として、通常の一般的な紙カップのフランジ成型加工に用いられているものと同様のプレス成型加工手段にて平坦に張り出したフランジ部7を設ける。
【0028】
そして、図1に示すように、プラスチック射出成型方式(真空加熱成型方式)又はプラスチックシート成型方式(熱プレス成型方式)にて成型した筒状胴部11と底部12と胴部11の上端開口部全周のフランジ部17と該フランジ部17に折目17a(薄肉折目)を介して延設した未折り返し状態(図1に示すように垂直に起立状態又は外側水平方向に張り出した状態)の折り返し部18(点線部分)とからなる成型プラスチック容器B内に、フランジ部7を設けた絞り成型紙容器Aを装着して、装着組み合わせ容器ABを作成する。
【0029】
その後、図1に示すように、折り返し部18(点線部分)を折目17aを介してフランジ部7の上面に折り返して重ね合わせ、その重ね合わせた個所(装着容器A、Bのフランジ部7、17、折り返し部18)の全周を加圧手段にて上下から挟み込み加圧(又は加熱加圧)して、絞り成型紙容器Aのフランジ部7が成型プラスチック容器Bのフランジ部17と折り返し部18とにより挟持されるように成型固定するとともに、プラスチック製の折り返し部18上面を平坦な蓋材密着面として、本発明の絞り成型複合密封容器が得られる。
【0030】
そして、図2に示すように、上記本発明の絞り成型複合密封容器に所定の内容物を充填した後、密封容器の開口部3上よりフランジ部7、17にあるプラスチック製折り返し部18上面の蓋材密着面にシート状蓋材Cを重ね合わせ、その重ね合わせ面をヒートシールし貼着(密着シール)して密封する。
【0031】
前記シート状蓋材Cとしては、プラスチックフィルムにアルミニウム等の金属や酸化珪素等の無機酸化物を薄膜蒸着したガスバリア性フィルム、又はアルミニウム箔、あるいは薄葉紙等の薄紙にガスバリア性フィルムやアルミニウム箔をラミネートしたラミネートフィルムが使用され、該シート状蓋材Cの裏面には、必要に応じて熱接着性層(シーラント層)が設けられている。
【0032】
【発明の効果】
本発明の絞り成型複合密封容器は、絞り成型紙容器の外面を成型プラスチック容器により覆うようにした複合容器であり、絞り成型された内側の絞り成型紙容器の胴部に発生した絞り成型皺が、シート状蓋材を密着させるために蓋材密着面として設けるフランジ部にも発生しているものの、外側の成型プラスチック容器のフランジ部にはプラスチック製の折り返し部が延設されていて、その折り返し部が、内側の絞り成型紙容器の絞り成型皺のあるフランジ部上面を覆うため、シート状蓋材はフランジ折り返し部の平坦な蓋材密着面と重ね合わせられて良好に密着シールされ、確実な密封包装が可能になり、絞り成型複合密封容器の施蓋時におけるシート状蓋材の密着性や容器密封性を向上させる効果がある。
【図面の簡単な説明】
【図1】本発明の絞り成型複合密封容器の概要側断面図。
【図2】本発明の絞り成型複合密封容器を施蓋した状態を説明する側断面図。
【図3】本発明における絞り成型紙容器の成型用紙の平面図。
【図4】本発明における絞り成型紙容器の絞り成型工程を説明する斜視図。
【図5】本発明における絞り成型紙容器の胴部に発生する絞り成型皺の状態を説明する部分斜視図。
【符号の説明】
A…絞り成型紙容器 B…成型プラスチック容器 C…シート状蓋材
1、11…胴部 2、12…底部 3…開口部 4a…成型皺
7、17…フランジ部 18…折り返し部
11…成型用紙 12…絞り成型手段 13…プレス雌型部
14…プレス雄型部
[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a drawn-molded composite sealed container in which a molded plastic container is coated on the outer surface of a drawn-molded paper container press-formed using container-molded paper.
[0002]
[Prior art]
Conventional draw-formed containers, such as cup-shaped draw-formed paper containers and draw-formed composite containers, consist of container-formed paper, such as a single flat cup base paper, or composite-molded paper made by laminating paper and a plastic film. Although it is obtained by press molding using a male mold, the body of a molded container consisting of a cylindrical body and a bottom has many draw forming wrinkles during molding, especially when using the deep drawing method. A flat flange part for sticking a sheet-like lid material on the outer periphery of the opening at the upper end of the body part where many wrinkles have occurred and overhanging it, and forming processing In this case, molding is performed in a state in which many wrinkles also occur in the flange portion.
[0003]
In addition, forming a general top curl portion as a cup-shaped container along the entire periphery of the opening at the upper end of the body portion of the molded container in a state in which a large number of the wrinkles are generated is based on the draw molding generated in the body portion Curling is difficult due to wrinkles. Even if curling can be performed, the top curl portion is formed with many wrinkles.
[0004]
[Problems to be solved by the invention]
As described above, in a draw-formed container such as a conventional cup-shaped draw-formed container, wrinkles generated in the body also occur in the flange portion and the top curl portion, and the sheet-like lid material is stacked on the flange portion and the top curl portion. When combined with heat sealing via an adhesive layer and affixed and covered, due to the unevenness due to wrinkles generated in the flange and top curl, the sheet-like lid material and the flange and top curl However, there is a problem that the tightness due to the lid of the draw-molded composite container, which is particularly required to be tightly sealed, cannot be sufficiently obtained.
[0005]
The present invention relates to a draw-molded composite hermetic container requiring hermeticity, when a flange portion or a top curl portion formed at an opening at an upper end portion of a body portion of a container is covered with a sheet-like lid material for covering. The object of the present invention is to improve the tightness of the molded composite airtight container as well as the adhesiveness of the molded composite airtight container.
[0006]
[Means for Solving the Problems]
The invention according to claim 1 of the present invention is a draw-formed paper container A comprising a cylindrical body 1, a bottom 2 and a flange 7 projecting over the entire periphery of the upper end opening of the body 1, and the formed paper container A And a draw-molded plastic container B having a similar shape to that of the molded paper container A and covering the outer surface of the molded paper container A and having a bottom portion 12 and a flange portion 17 around the entire upper end opening of the body portion 11. In the sealed container, the front and back surfaces of the flange portion 7 of the draw-molded paper container A are connected to the flange portion 17 of the molded plastic container B, and are extended and folded back to the flange portion 17 so that a flat lid material is adhered by heating and pressing. A drawn-molded composite hermetically sealed container characterized by being sandwiched by a folded portion 18 having a surface.
[0007]
The invention according to a second aspect of the present invention is the draw-formed composite sealed container according to the first aspect, wherein a sheet for covering is provided on the surface of the folded portion 18 which is folded back on the surface of the flange portion 7 and heat-sealed. A draw-formed composite hermetic container characterized in that lids are overlapped and tightly sealed.
[0008]
The invention according to claim 3 of the present invention is the drawn molded paper container according to claim 1 or 2, wherein the molded plastic container B is a drawn molded plastic container. It is.
[0009]
The invention according to claim 4 of the present invention is the draw-molded paper container according to claim 1 or 2, wherein the molded plastic container B is an injection-molded plastic container. It is.
[0010]
The invention according to claim 5 of the present invention is the drawn paper container according to any one of claims 1 to 4, wherein the outer surface of the drawn paper container A and the inner surface of the molded plastic container B are: A draw-formed composite hermetically sealed container characterized by being in close contact with each other so as to be separable from each other.
[0011]
The invention according to claim 6 of the present invention is the drawn paper container according to any one of claims 1 to 4, wherein the outer surface of the drawn paper container A and the inner surface of the molded plastic container B are: A draw-formed composite sealed container characterized by being separated from each other with a gap so as to be separable from each other.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the cup-shaped draw-formed composite sealed container of the present invention will be described in detail below based on side sectional views of the container shown in FIGS.
[0013]
As shown in FIG. 1, the cup-shaped drawn paper container of the present invention has a shape similar to the drawn paper container A inside the container and covers the outer surface of the container A. And a molded plastic container B on the outside of the container.
[0014]
The draw-formed paper container A on the inner side of the container includes a cylindrical body 1, a bottom 2, and a flange portion 7 protruding all around the upper end opening 3 of the body 1, and has a similar shape to the draw-formed paper container A. The molded plastic container B on the outside of the container has a cylindrical body 11, a bottom 12, a flange 17 projecting over the entire periphery of the upper end opening 3 of the body 11, and a folded back extending from the flange 17 through a fold 17 a. And part 18.
[0015]
The flange portion 7 of the draw-formed paper container A is overlapped with the flange portion 17 of the molded plastic container B, and a folded portion 18 is extended at the outer end of the flange portion 17 through a fold 17a. The folded portion 18 is folded back from the fold 17a onto the surface of the flange portion 7 of the container A, and the folded upper surface of the folded portion 18 is formed flat by heating and pressing. The portion 7 is sandwiched between the flange portion 17 and the folded portion 18.
[0016]
As the forming paper used for the draw forming process of the draw-formed paper container A, a base paper for forming a container such as a coated ball, a base paper for a cup, and uncoated ivory can be used. An olefin-based synthetic resin such as polyethylene or polypropylene, or a polyethylene terephthalate-based synthetic resin can be appropriately laminated or coated on the side surface as a sealant layer for heat sealing, a water-resistant layer, or a water-repellent layer. Further, a composite paper in which a gas barrier film such as a metal-deposited film or an inorganic oxide-deposited film or an aluminum foil is laminated on these forming base papers may be used.
[0017]
As the plastic material used for molding the molded plastic container B, olefins such as polyethylene and polypropylene, and polyethylene terephthalate plastic materials can be used. The molding of the container B is performed by a plastic molding die and a screw extrusion, The plastic film or sheet can be formed by an injection molding method using an injection molding machine, or by a vacuum molding or drawing molding method using a vacuum molding die or a press die.
[0018]
On the outer peripheral surface of the cylindrical body 1 of the draw-formed paper container A, a plurality of wrinkles are formed by drawing in the vertical direction as described later. Similarly, wrinkled wrinkles remain on the flange portion 7 which is formed by being expanded in the outer peripheral direction by working.
[0019]
The bottoms 2 and 12 of the drawn paper container A and the molded plastic container B may have a flat bottom surface that is not raised as shown in the figure, or may have a slightly raised bottom surface (not shown). You may.
[0020]
The draw-formed composite container of the present invention will be described below based on a draw-forming step. First, as shown in FIG. 3, a circular shaped paper 11 is prepared as a draw-formed paper.
[0021]
A circular fold 11a is formed on the inner side of the circular shaped paper 11 concentrically and forms a boundary between a portion serving as the body 1 and a portion serving as the bottom 2 of the container. A straight fold 11b is formed radially from the outer periphery of the sheet 11 to the center of the circle from the inner circumferential fold line 11a toward the center of the circle, and from the intersection of the circular fold line 11a and the straight fold line 11b with respect to the straight fold line 11b. An oblique straight fold 11c is formed which is deviated and inclined to one side so as to have a predetermined angle.
[0022]
In the case where the container to be molded has a cup (taper) shape that gradually expands upward, the distance between the outer periphery of the molding paper 11 and the straight fold 11b corresponds to the arc length between the intersections of the circular fold line 11a and the straight fold 11b. The arc length between the intersections is set slightly longer, and in the case of a columnar shape, both arc lengths are set to be the same.
[0023]
Next, as shown in FIG. 4, a press molding type drawing means 12 is used to form a space between a press female mold portion 13 and a press male mold portion 14 directly above the press female mold portion 13. Then, the circular molded paper 11 is placed horizontally. It is to be noted that the circular molded paper 11 is previously given a folding habit along each of the folds 11a, 11b, 11c so as to be folded along the folds as much as possible and to be drawn. Is desirable.
[0024]
The press female mold portion 13 is constituted by an upper opening portion 13a, an inner wall surface 13b having an inverted truncated cone shape, and an inner bottom surface 13c provided with a raised portion (or a flat surface having no raised portion). The press male mold part 14 has an inverted truncated cone shape that can be fitted into the press female mold part 13, and can be moved up and down by a suitable actuator such as a pneumatic or hydraulic cylinder to fit into the press female mold part 13.・ Can be removed.
[0025]
Subsequently, the press male mold part 14 of the drawing molding means 12 is moved downward by the drive of the actuator, and the molded paper 11 placed in the space between the press female mold part 13 and the press male mold part 14 is moved from the upper surface. While being pressed, the molded paper 11 is fitted into the press female mold portion 13 and the molded paper 11 is turned into a circular fold 11a, a radial straight fold 11b, and an inclined straight fold 11c as shown in the partial perspective views of FIGS. A cup provided with an inverted frustoconical cylindrical body 1 having a plurality of drawn molding wrinkles 4 a in the longitudinal direction, a bottom 2, and an upper opening 3 of the body 1. Into a squeezed paper container A.
[0026]
After the molding, the press male mold part 14 of the drawing molding means 12 is separated from the press female mold part 13 by the ascending drive of the actuator.
[0027]
As shown in FIG. 1, a sheet-like lid for covering is provided on the entire periphery of the upper end portion of the body 1 where the molding wrinkles 4a which become the opening 3 of the cup-shaped draw-formed paper container A shown in FIG. As a cover material contact surface for overlapping and tightly sealing the material C, a flange portion 7 protruded flat by the same press molding processing method as that used for flange molding of a general paper cup is used. Provide.
[0028]
As shown in FIG. 1, a cylindrical body 11, a bottom 12 and an upper end opening of the body 11 molded by a plastic injection molding method (vacuum heating molding method) or a plastic sheet molding method (hot press molding method). In the unfolded state (as shown in FIG. 1, a vertically upright state or a state in which the flange section 17 extends outward in the horizontal direction) extending along the entire circumference of the flange portion 17 and a fold 17 a (thin fold) on the flange portion 17. A draw-formed paper container A provided with a flange portion 7 is mounted in a molded plastic container B having a folded portion 18 (dotted line portion), and a mounted combination container AB is created.
[0029]
Thereafter, as shown in FIG. 1, the folded portion 18 (dotted line portion) is folded over the upper surface of the flange portion 7 through the fold 17 a and overlapped, and the overlapped portion (the flange portions 7 of the mounting containers A and B, 17, the entire circumference of the folded portion 18) is sandwiched and pressed (or heated and pressurized) from above and below by a pressurizing means, so that the flange portion 7 of the drawn paper container A and the flange portion 17 of the molded plastic container B and the folded portion are pressed. The molded closed container of the present invention can be obtained by molding and fixing so as to be sandwiched between them and using the upper surface of the folded portion 18 made of plastic as a flat lid contact surface.
[0030]
Then, as shown in FIG. 2, after the predetermined content is filled in the draw-formed composite sealed container of the present invention, the upper surface of the plastic turn-up portion 18 in the flange portions 7 and 17 from above the opening 3 of the sealed container. The sheet-shaped lid member C is overlapped on the lid-contacting surface, and the overlapped surface is heat-sealed, adhered (close-contact sealing), and sealed.
[0031]
As the sheet-like lid member C, a gas barrier film in which a metal such as aluminum or an inorganic oxide such as silicon oxide is thinly deposited on a plastic film, or an aluminum foil, or a gas barrier film or an aluminum foil laminated on thin paper such as tissue paper A laminated film is used, and a heat-adhesive layer (sealant layer) is provided on the back surface of the sheet-like lid material C as necessary.
[0032]
【The invention's effect】
The draw-formed composite sealed container of the present invention is a composite container in which the outer surface of the draw-formed paper container is covered with a molded plastic container. Although a flange portion provided as a lid material contact surface for bringing the sheet-like lid material into close contact is also generated, a plastic folded portion is extended from the flange portion of the outer molded plastic container, and the folded portion is formed. Since the portion covers the upper surface of the wrinkled flange portion of the drawn-in paper container on the inner side, the sheet-like lid material is superimposed on the flat lid-contacting surface of the folded-back portion and is tightly sealed tightly to ensure reliable sealing. Hermetic packaging becomes possible, and there is an effect of improving the adhesiveness of the sheet-like lid member and the container sealing property when the draw-formed composite sealed container is covered.
[Brief description of the drawings]
FIG. 1 is a schematic side sectional view of a draw-formed composite sealed container of the present invention.
FIG. 2 is a side sectional view illustrating a state in which the draw-formed composite sealed container of the present invention is covered.
FIG. 3 is a plan view of a formed paper of a draw-formed paper container according to the present invention.
FIG. 4 is a perspective view illustrating a draw forming step of the draw-formed paper container according to the present invention.
FIG. 5 is a partial perspective view for explaining the state of wrinkled wrinkles generated on the trunk of the drawn paper container according to the present invention.
[Explanation of symbols]
A: Draw-formed paper container B: Molded plastic container C: Sheet-shaped lid material 1, 11 ... Trunk part 2, 12 ... Bottom part 3 ... Opening 4a ... Molded wrinkles 7, 17 ... Flange part 18 ... Folded part 11 ... Molded paper 12 Draw forming means 13 Press female mold part 14 Press male mold part

Claims (6)

筒状胴部1と底部2と胴部1の上端開口部全周に張り出したフランジ部7とからなる絞り成型紙容器Aと、該成型紙容器Aに対して相似形状であって該成型紙容器Aの外面を覆う筒状胴部11と底部12と胴部11の上端開口部全周のフランジ部17からなる成型プラスチック容器Bとからなる絞り成型密封容器において、前記絞り成型紙容器Aのフランジ部7の表裏面が、成型プラスチック容器Bのフランジ部17と、該フランジ部17に延設され折り返されて加熱加圧にて平坦な蓋材密着面を有する折り返し部18とにより挟持されていることを特徴とする絞り成型複合密封容器。A drawn paper container A comprising a cylindrical body 1, a bottom 2 and a flange 7 projecting over the entire periphery of an upper end opening of the body 1; In a draw-formed sealed container comprising a cylindrical body portion 11 covering the outer surface of the container A, a bottom portion 12 and a molded plastic container B comprising a flange portion 17 around the entire upper end opening of the body portion 11, the draw-formed paper container A The front and back surfaces of the flange portion 7 are sandwiched between the flange portion 17 of the molded plastic container B and the folded portion 18 which is extended and folded on the flange portion 17 and has a flat lid contact surface by heating and pressing. And a drawn-molded composite sealed container. 請求項1記載の絞り成型複合密封容器において、前記フランジ部7の表面に折り返されてヒートシールされた前記折り返し部18面上に施蓋用のシート状蓋材が重ね合わせられて密着シールされていることを特徴とする絞り成型複合密封容器。2. The draw-formed composite hermetically sealed container according to claim 1, wherein a sheet-like lid material for covering is overlapped and tightly sealed on the surface of the folded portion 18 which is folded back on the surface of the flange portion 7 and heat-sealed. And a drawn-molded composite sealed container. 請求項1又は請求項2記載の絞り成型複合密封容器において、前記成型プラスチック容器Bが、絞り成型プラスチック容器であることを特徴とする絞り成型複合密封容器。3. The draw-molded composite sealed container according to claim 1, wherein the molded plastic container B is a draw-molded plastic container. 請求項1又は請求項2記載の絞り成型複合密封容器において、前記成型プラスチック容器Bが、射出成型プラスチック容器であることを特徴とする絞り成型複合密封容器。3. The draw-molded composite sealed container according to claim 1, wherein the molded plastic container B is an injection-molded plastic container. 請求項1乃至請求項4のいずれか1項記載の絞り成型複合密封容器において、前記絞り成型紙容器Aの外面と成型プラスチック容器Bの内面とが、互いに分離可能に非接着状態で密着していることを特徴とする絞り成型複合密封容器。The draw-molded composite sealed container according to any one of claims 1 to 4, wherein an outer surface of the draw-formed paper container A and an inner surface of the molded plastic container B are in close contact with each other in a non-adhesive state so as to be separable from each other. And a drawn-molded composite sealed container. 請求項1乃至請求項4のいずれか1項記載の絞り成型複合密封容器において、前記絞り成型紙容器Aの外面と成型プラスチック容器Bの内面とが、互いに分離可能に隙間を有して離間していることを特徴とする絞り成型複合密封容器。The draw-molded composite sealed container according to any one of claims 1 to 4, wherein the outer surface of the draw-formed paper container A and the inner surface of the molded plastic container B are separated from each other with a gap so as to be separable from each other. A draw-formed composite hermetically sealed container characterized by the following:
JP2002220809A 2002-07-30 2002-07-30 Drawed composite hermetic container Pending JP2004059081A (en)

Priority Applications (1)

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JP2002220809A JP2004059081A (en) 2002-07-30 2002-07-30 Drawed composite hermetic container

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002220809A JP2004059081A (en) 2002-07-30 2002-07-30 Drawed composite hermetic container

Publications (1)

Publication Number Publication Date
JP2004059081A true JP2004059081A (en) 2004-02-26

Family

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Family Applications (1)

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Country Link
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