JP3621183B2 - Liquid paper container heating device - Google Patents

Liquid paper container heating device Download PDF

Info

Publication number
JP3621183B2
JP3621183B2 JP03656596A JP3656596A JP3621183B2 JP 3621183 B2 JP3621183 B2 JP 3621183B2 JP 03656596 A JP03656596 A JP 03656596A JP 3656596 A JP3656596 A JP 3656596A JP 3621183 B2 JP3621183 B2 JP 3621183B2
Authority
JP
Japan
Prior art keywords
hot air
paper container
liquid paper
region
panel
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 - Fee Related
Application number
JP03656596A
Other languages
Japanese (ja)
Other versions
JPH09226705A (en
Inventor
敏明 野村
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
Original Assignee
Toppan Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toppan Inc filed Critical Toppan Inc
Priority to JP03656596A priority Critical patent/JP3621183B2/en
Publication of JPH09226705A publication Critical patent/JPH09226705A/en
Application granted granted Critical
Publication of JP3621183B2 publication Critical patent/JP3621183B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Package Closures (AREA)
  • Closing Of Containers (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、果汁や清酒などを収納する切妻屋根形の液体用紙容器の製箱、充填工程において、仮折りした液体用紙容器の底部成形性の向上を図るための液体用紙容器の加熱装置に関するものである。
【０００２】
【従来の技術】
従来より、切妻屋根形などの液体用紙容器を構成する熱可塑性樹脂層を積層した紙積層材料については、例えば表面側から、熱可塑性樹脂層であるポリエチレン層（３０μｍ）と紙材料層（３１０ｇ／ｍ２ ）とポリエチレン層（２５μｍ）とガスバリアー層としてのアルミニウム箔（９μｍ）とポリエステルフィルム（１２μｍ）と熱可塑性樹脂であるポリエチレン層（６０μｍ）とを、適宜に積層した紙積層材料などが、広く用いられている。
【０００３】
このような、表面に熱可塑性樹脂層を積層した紙積層材料製の切妻屋根形などの液体用紙容器の製箱、充填工程において、仮折りした液体用紙容器の底部や頂部の密封する部分の熱圧着を容易にするために、この密封する部分の近傍に移動して位置させる加熱装置に備えた加熱オーブンにより熱風を吹きつけて、表面の熱可塑性樹脂層を溶かし、密封する部分を合わせ接合する作業が行われている。そこで、液体用紙容器の底部の密封方法の一例を示すならば、図３（ａ）は液体用紙容器の底部部分を示すもので、第１パネル２１と第２パネル２２と第３パネル２３と第４パネル２４とのり代片２５と、各パネル上端部に密封する部分２６，２６を設け、第２パネル２２と第４パネル２４には仮折り用の折り罫２８，２８が設けられている。まず液体用紙容器の製箱、充填工程において、図示はしないが第１パネル２１とのり代２５とをサック貼りし、仮折りされた底部と頂部が開口した角筒状の液体用紙容器２０とする。次に、この液体用紙容器２０の底部の密封する部分２６，２６に内外面より熱風を吹きつけて表面の熱可塑性樹脂層を溶かし、図３（ｂ）に示すように密封する部分２６，２６を接合し折り込み、密封する。さらに図３（ｃ）に示すように、この上方から熱押圧しすると共に、第２パネル２２と第４パネル２４の折り罫２８，２８に沿って折り込みシールし、液体用紙容器の底部を密封することができる。
【０００４】
この前記液体用紙容器の表面の熱可塑性樹脂層を溶かすには、図２（ａ）に示すような、加熱装置１０の加熱オーブン１１を液体用紙容器２０の仮折りされた底部の密封する部分２６，２６に臨ませて、加熱オーブン１１から熱風を前記紙容器の密封される部分２６，２６に向かって吹き付けることによって行われる。すなわち、図２（ｂ）に示すように、加熱オーブン１１は液体用紙容器２０の底部の端部である、密封する部分２６，２６を内外から囲むような、熱風供給口１２を有するセンターオーブン１１Ａとサイドオーブン１１Ｂ，１１Ｂの構造となっている。このセンターオーブン１１Ａのコーナー部を含む全周には、液体用紙容器２０の内面側の熱可塑性樹脂層に熱風を吹きつけるために、多数の熱風吹き出し用孔ｂ，ｂ…が設けられており、また、サイドオーブン１１Ｂ，１１Ｂには、液体用紙容器２０の前記密封する部分２６，２６に臨む面に外側から熱風を吹きつけるため、図２（ｃ）に示すように、多数の熱風吹き出し用孔ｂ，ｂ…を設け、その中央部分には略方形状に無孔領域１５を形成したものである。すなわち、サイドオーブン１１Ｂ，１１Ｂの熱風吹き出し用孔は、密封される部分を外側から補助するための熱風孔Ｈｂと、紙容器の底部のシールのための熱風孔Ｔｂとに熱風吹きつけ用孔を共用していた。
【０００５】
【発明が解決しようとする課題】
しかしながら、前述したサイドオーブン１１Ｂ，１１Ｂに設けられた略方形状の無孔領域１５とその周辺に設けた多数の熱風吹き出し用孔ｂ，ｂ…によって、紙容器の外面側から熱風を吹きつけると、液体用紙容器２０の第２パネル２２と第４パネル２４の密封する部分２６，２６と三角形の折り罫２８，２８部分を含むパネルにも熱風がかかり、底部の成形の際に、折り罫２６，２６に沿った内側と外側の液体用紙容器の強度差がなくなり、三角形の折り罫通りに折り込むことが難しく、成形不良が発生する恐れがあった。
【０００６】
そこで本発明は、上記の課題に鑑みなされたもので、その目的とするところは、サイドオーブンの熱風吹きつけ用孔の配列を、第２パネルと第４パネルの三角形の折り罫に沿って設けることで、加熱される部分と加熱されない部分との液体用紙容器の紙材に強度差をつけることが可能となる、液体用紙容器の加熱装置を提供することにある。
【０００７】
【課題を解決するための手段】
上記目的を達成するために、本発明の請求項１に係る発明は、表面に熱可塑性樹脂層を積層した紙積層材料製からなる、切妻屋根形などの液体用紙容器の仮折りされた底部や頂部などを熱圧着して密封する部分に、熱風を吹きつけて表面の熱可塑性樹脂層を溶かす加熱装置の、前記熱可塑性樹脂層を溶かす底部や頂部に臨ませて配置され、図１に示すように、液体用紙容器２０の内外面に熱風を吹き付けるセンターオーブン１１Ａと両サイドオーブン１１Ｂ，１１Ｂとからなる加熱オーブン１１に、多数の熱風吹き出し用孔ｂ，ｂ，…を設けて熱風を吹きつける液体用紙容器２０の加熱装置１０において、前記液体用紙容器２０の底部に臨ませて配置される両サイドオーブン１１Ｂ，１１Ｂの内面側の前記液体用紙容器２０の第２パネル２２と第４パネル２４の三角形状に仮折りされる底部に対向する位置に、三角形の折り罫を境界として、三角形内側領域の熱風を当てない領域の加熱されない堅い部分と三角形外側領域の熱風を当てる領域の加熱され軟らかくなった部分との強度差を形成するための熱風吹き出し用孔の設けられていない略三角形状の無孔領域１５を設け、該略三角形状の無孔領域１５の周辺には多数の熱風吹き出し用孔ｂ，ｂ，…を配置したことを特徴とする液体用紙容器の加熱装置である。
【０００８】
本発明の請求項２に係る発明は、表面に熱可塑性樹脂層を積層した紙積層材料製からなる、切妻屋根形などの液体用紙容器の仮折りされた底部や頂部などを熱圧着して密封する部分に、熱風を吹きつけて表面の熱可塑性樹脂層を溶かす加熱装置の、前記熱可塑性樹脂層を溶かす底部や頂部に臨ませて配置され、図１に示すように、液体用紙容器２０の内外面に熱風を吹き付けるセンターオーブン１１Ａと両サイドオーブン１１Ｂ，１１Ｂとからなる加熱オーブン１１に、多数の熱風吹き出し用孔ｂ，ｂ，…を設けて熱風を吹きつける液体用紙容器２０の加熱装置１０において、前記液体用紙容器２０の底部に臨ませて配置される両サイドオーブン１１Ｂ，１１Ｂの内面側の前記液体用紙容器２０の第２パネル２２と第４パネル２４の三角形状に仮折りされる底部の三角形の折り罫２８上とその三角形の折り罫２８より内側領域とに対向する位置に、三角形の折り罫を境界として、三角形内側領域の熱風を当てない領域の加熱されない堅い部分と三角形外側領域の熱風を当てる領域の加熱され軟らかくなった部分との強度差を形成するための熱風吹き出し用孔の設けられていない略三角形状の無孔領域１５を設け、該無孔領域１５の周辺には多数の熱風吹き出し用孔ｂ，ｂ，…を配置したことを特徴とする液体用紙容器の加熱装置である。
【０００９】
【発明の実施の形態】
図に基づき本発明の実施の形態を説明する。
本発明の液体用紙容器の加熱装置１０におけるサイドオーブン１１Ｂ，１１Ｂは、図１に示すように、液体用紙容器２０の底部に臨ませて配置される両サイドオーブン１１Ｂ，１１Ｂの内面側のほぼ中央部に略三角形状の無孔領域１５を形成し、この周辺に多数の熱風吹き出し用孔ｂ，ｂ…を配置したもので、また、前記両サイドオーブン１１Ｂ，１１Ｂ内面側に形成した略三角形状の無孔領域１５は、前記液体用紙容器の仮折りされた底部の第２パネル２２と第４パネル２４との三角形の折り罫２８，２８の対向する位置に形成したものである。
【００１０】
【作用】
本発明の液体用紙容器２０の加熱装置１０におけるサイドオーブン１１Ｂ，１１Ｂには、図１に示すように、内面側のほぼ中央部に略三角形状の無孔領域１５を形成し、その周辺部に熱風吹き出し用孔ｂ，ｂ…を多数設けたもので、この無孔領域１５の位置は、仮折りされた液体用紙容器２０の底部に臨ませて配置した際に、液体用紙容器の第２パネル２２と第４パネル２４の三角形状に仮折りされる底部に対向する位置になるように形成したものである。この装置により液体用紙容器底部の内面側と外面側より熱風を吹きつけることにより、第２パネル２２と第４パネル２４の三角形の折り罫２８、２８を挟んで、外側の加熱され軟らかくなった部分（略三角形状の無孔領域１５周辺の多数の熱風吹き出し用孔ｂ，ｂ…と対向する部分）と折り罫の内側の加熱されない硬い部分（略三角形状の無孔領域１５と対向する部分）とができ、従って、両者間に紙の強度差が生じ、底部を密封する際に、折り罫に沿って折り易くなり、そのため折り曲げ不良（成形不良）がなくなった。
【００１１】
【実施例】
以下、図に基づき実施例を詳細に説明する。
図１は、液体用紙容器の底部を密封する加熱装置に於けるサイドオーブンで、（ａ）は、サイドオーブンの底面図であり、（ｂ）は、サイドオーブンの熱風吹き出し用孔の配置を示す平面図である。また、図２の（ａ）は、液体用紙容器の底部の加熱装置の概略図であり、（ｂ）は、加熱オーブンの概略側面図で、（ｃ）は、サイドオーブンの熱風吹き出し用孔の配置の一例を示す平面図である。また、図３（ａ），（ｂ），（ｃ）は、液体用紙容器の底部を密封する状態を示す説明図である。
【００１２】
本発明に係る液体用紙容器の底部用の加熱装置の本体は、図示しないが支持基板と熱風供給部とガイドシリンダーとエアーシリンダーを介して上昇、下降するように取りつけられた外筒体が設けられており、この外筒体の下部に加熱オーブン１１が取りつけられている。そして図２（ａ）に示すように、この加熱オーブン１１が下降した時に、仮折りして液体用紙容器２０の底部を熱圧着して密封する部分２６，２６の近傍に位置するような構造になっている。
【００１３】
本発明の加熱装置における加熱オーブン１１は、図２（ｂ）に示すように、センターオーブン１１Ａと両側にサイドオーブン１１Ｂ，１１Ｂの構造で、液体用紙容器２０の密封する部分２６，２６が適宜の間隔を保って位置できるようになっている。また、１２は装置本体からの熱風供給口であり、ｂは熱風吹き出し用孔を示し、矢印は熱風吹き出し用孔からの熱風の吹きつけ方向を示したものである。
すなわち、仮折りした液体用紙容器２０の熱圧着して密封する部分２６，２６の４面体の側面の形状に合わせて、この密封する部分２６，２６の内面側の熱可塑性樹脂層を溶かす、側面が４面体のセンターオーブン１１Ａと、この密封する部分２６，２６の左右の第２パネル２２と第４パネル２４の外面側の熱可塑性樹脂層を溶かす、サイドオーブン１１Ｂ，１１Ｂとから構成されている。このセンターオーブン１１Ａの下部に、前記密封する部分２６，２６の内面側に臨む４面の全周に熱風吹き出し用孔ｂ，ｂ…を設け、図１に示すように、サイドオーブン１１Ｂ，１１Ｂには、内側の側面のほぼ中央部に略三角形状の無孔領域１５を形成し、その周辺に前記密封する部分２６，２６の左右の外面側に臨む面に、多数の熱風吹き出し用孔ｂ，ｂ…を設けたもので、この孔から熱風を吹き出すことにより密封する部分とシールする部分の熱可塑性樹脂層を溶かし熱圧着して、上方より熱押圧してシールし、液体用紙容器の底部を形成する。また、前記略三角形状の無孔領域１５の位置は、液体用紙容器の底部を形成する第２パネル２２と第４パネル２４の上部の三角形の折り罫２８，２８に対向する位置に形成したものである。
【００１４】
これにより、サイドオーブン１１Ｂ，１１Ｂからの熱風は、密封する部分２６，２６に内面側と外面側から集中的にあたり熱圧着により完全に密封されると共に、折り畳まれる第２パネル２２と第４パネル２４の三角形の折り罫の外側に熱風はあたり、内側にはあたらないので、折り罫２８，２８から折り罫に沿って折り畳むことができ、しかも完全にシールすることができる。
【００１５】
次に、本発明の液体用紙容器の加熱装置を用いて、表面側から熱可塑性樹脂層であるポリエチレン層（３０μｍ）と紙材料層（３１０ｇ／ｍ２ ）とポリエチレン層（２５μｍ）とポリエステルフィルム（１２μｍ）とアルミニウム箔（９μｍ）とポリエステルフィルム（１２μｍ）と熱可塑性樹脂層であるポリエチレン層（６０μｍ）とを、切妻屋根形の液体用紙容器（２０）の底部の熱圧着して密封する部分２６，２６に前述した熱風吹き出し用孔ｂ，ｂ…から、３６０℃、８０ｍｍＡｑの熱風を１秒間吹きつけて、内外面側の熱可塑性樹脂層を溶かし熱圧着したところ、液体用紙容器の底部は、ほぼ平らに密封され、しかも熱圧着不良による液漏れなどが起こらなかった。
【００１６】
【発明の効果】
本発明の液体用紙容器の加熱装置におけるサイドオーブンは、内面側のほぼ中央部に略三角形状の無孔領域を形成し、その周辺に熱風吹き出し用孔を多数設けたもので、この無孔領域の位置は、仮折りされた液体用紙容器の底部に臨ませて配置した際に、液体用紙容器の第２パネルと第４パネルの三角形の折り罫に対向する位置になるように形成したものである。この装置により液体用紙容器底部の内面側と外面側より熱風を吹きつけることにより、第２パネルと第４パネルの三角形の折り罫を挟んで、外側の加熱され軟らかくなった部分と折り罫の内側の加熱されない硬い部分とができ、従って、両者間に紙の強度差が生じ、底部を密封する際に、折り罫に沿って折り易くなり、成形不良がなくなった。従って、液体用紙容器の底部は、ほぼ平らに密封され、しかも熱圧着不良による液漏れなどが起こらなかった。
【図面の簡単な説明】
【図１】本発明の実施例における、液体用紙容器の底部を密封する加熱装置に於けるサイドオーブンで、（ａ）は、サイドオーブンの底面図であり、（ｂ）は、サイドオーブンの熱風吹き出し用孔の配置を示す平面図である。
【図２】本発明に係る液体用紙容器底部の加熱装置の概略を示すもので、（ａ）は、加熱装置本体の概略図であり、（ｂ）は、加熱オーブンの概略側面図で、（ｃ）は、サイドオーブンの熱風吹き出し用孔の配置の一例を示す平面図である。
【図３】本発明に係る液体用紙容器の底部を密封する状態を示す説明図である。
【符号の説明】
１０…加熱装置本体
１１…加熱オーブン
１１Ａ…センターオーブン
１１Ｂ…サイドオーブン
１２…熱風供給口
１５…無孔領域
２０…液体用紙容器
２１…第１パネル
２２…第２パネル
２３…第３パネル
２４…第４パネル
２５…のり代片
２６…密封する部分
２８…折り罫
ｂ …熱風吹き出し用孔
Ｈｂ…密封する部分に対する外側からの熱風孔
Ｔｂ…底部のシールのための熱風孔[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating apparatus for a liquid paper container for improving the bottom formability of a temporarily folded liquid paper container in the box making and filling process of a gable roof liquid paper container for storing fruit juice, sake, etc. It is.
[0002]
[Prior art]
Conventionally, with respect to a paper laminated material in which a thermoplastic resin layer constituting a liquid paper container such as a gable roof is laminated, for example, from the surface side, a polyethylene layer (30 μm) which is a thermoplastic resin layer and a paper material layer (310 g / m 2 ), a polyethylene layer (25 μm), an aluminum foil (9 μm) as a gas barrier layer, a polyester film (12 μm), and a polyethylene layer (60 μm) which is a thermoplastic resin, and a paper laminate material or the like appropriately laminated, Widely used.
[0003]
In the boxing and filling process of liquid paper containers such as gable roofs made of paper laminate material with a thermoplastic resin layer laminated on the surface, the heat at the bottom and top of the temporarily folded liquid paper container is sealed. In order to facilitate crimping, hot air is blown by a heating oven provided in a heating device that is moved and positioned in the vicinity of the portion to be sealed, the thermoplastic resin layer on the surface is melted, and the portions to be sealed are joined and joined. Work is being done. Therefore, if an example of a method for sealing the bottom of the liquid paper container is shown, FIG. 3A shows the bottom part of the liquid paper container. The first panel 21, the second panel 22, the third panel 23, A margin piece 25 for the four panels 24 and portions 26 and 26 for sealing are provided at the upper end portions of the respective panels, and fold rules 28 and 28 for temporary folding are provided on the second panel 22 and the fourth panel 24. First, in the box making and filling process of the liquid paper container, although not shown, the first panel 21 and the glue margin 25 are sack-attached to form a rectangular tube-shaped liquid paper container 20 having a temporarily folded bottom and top. . Next, hot air is blown from the inner and outer surfaces to the sealing portions 26 and 26 at the bottom of the liquid paper container 20 to melt the thermoplastic resin layer on the surface, and the sealing portions 26 and 26 are sealed as shown in FIG. Join, fold and seal. Further, as shown in FIG. 3 (c), heat is pressed from above, and the sheet is folded and sealed along the creases 28 and 28 of the second panel 22 and the fourth panel 24 to seal the bottom of the liquid paper container. be able to.
[0004]
In order to melt the thermoplastic resin layer on the surface of the liquid paper container, as shown in FIG. 2A, the heating oven 11 of the heating apparatus 10 is sealed at the temporarily folded bottom portion 26 of the liquid paper container 20. , 26, and by blowing hot air from the heating oven 11 toward the sealed portions 26, 26 of the paper container. That is, as shown in FIG. 2B, the heating oven 11 is a center oven 11 </ b> A having a hot air supply port 12 that surrounds the sealing portions 26, 26 from the inside and outside, which is the bottom end portion of the liquid paper container 20. And side ovens 11B and 11B. A number of hot air blowing holes b, b... Are provided on the entire circumference including the corner portion of the center oven 11A in order to blow hot air on the thermoplastic resin layer on the inner surface side of the liquid paper container 20. Moreover, since hot air is blown from the outside to the side facing the sealing portions 26 and 26 of the liquid paper container 20, the side ovens 11B and 11B have a large number of hot air blowing holes as shown in FIG. b, b... are provided, and a non-porous region 15 is formed in a substantially square shape at the center thereof. That is, the hot air blowing holes of the side ovens 11B and 11B are provided with hot air blowing holes in the hot air holes Hb for assisting the sealed portion from the outside and the hot air holes Tb for sealing the bottom of the paper container. It was shared.
[0005]
[Problems to be solved by the invention]
However, when hot air is blown from the outer surface side of the paper container by the substantially square non-porous region 15 provided in the side ovens 11B and 11B and a large number of hot air blowing holes b, b provided in the periphery thereof. Further, hot air is also applied to the panel including the sealing portions 26 and 26 of the second panel 22 and the fourth panel 24 of the liquid paper container 20 and the triangular folding lines 28 and 28, and the folding line 26 is formed when the bottom part is formed. , 26, the difference in strength between the inner and outer liquid paper containers is eliminated, and it is difficult to fold along the triangular crease, and there is a risk of forming defects.
[0006]
Accordingly, the present invention has been made in view of the above-described problems, and an object of the present invention is to provide an array of hot air blowing holes of the side oven along the triangular creases of the second panel and the fourth panel. Thus, an object of the present invention is to provide a heating device for a liquid paper container that makes it possible to make a difference in strength between the heated material portion and the unheated portion of the paper material of the liquid paper container.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 of the present invention is such that a temporarily folded bottom portion of a liquid paper container, such as a gable roof shape, made of a paper laminated material having a thermoplastic resin layer laminated on a surface thereof. FIG. 1 shows a heating device that blows hot air to a portion to be sealed by thermocompression bonding of the top and the like so as to face the bottom and top of the thermoplastic resin layer. As described above, a large number of hot air blowing holes b, b,... Are provided in the heating oven 11 including the center oven 11A for blowing hot air on the inner and outer surfaces of the liquid paper container 20 and the side ovens 11B, 11B. In the heating device 10 for the liquid paper container 20, the second panel 22 of the liquid paper container 20 on the inner surface side of both side ovens 11 </ b> B and 11 </ b> B disposed facing the bottom of the liquid paper container 20. A region where the hot air in the region not exposed to the hot air in the inner region of the triangle and the hot air in the outer region of the triangle are applied to the position facing the bottom of the fourth panel 24 that is temporarily folded into a triangular shape, with the triangular crease as a boundary. A substantially triangular non-porous region 15 provided with no hot air blowing holes for forming a difference in strength from the heated and soft portion is provided, and a large number of non-perforated regions 15 around the substantially triangular non-porous region 15 are provided. Is a heating device for a liquid paper container, in which holes b, b,.
[0008]
The invention according to claim 2 of the present invention is such that a temporarily folded bottom portion or top portion of a liquid paper container such as a gable roof shape, which is made of a paper laminated material having a thermoplastic resin layer laminated on the surface thereof, is sealed by thermocompression bonding. The heating device that blows hot air to the portion that melts the thermoplastic resin layer on the surface is arranged facing the bottom and top of the thermoplastic resin layer, and as shown in FIG. A heating apparatus 10 for the liquid paper container 20 that blows hot air by providing a plurality of hot-air blowing holes b, b,... In a heating oven 11 comprising a center oven 11A that blows hot air on the inner and outer surfaces and both side ovens 11B and 11B. The second panel 22 and the fourth panel 24 of the liquid sheet container 20 on the inner surface side of the side ovens 11B and 11B arranged facing the bottom of the liquid sheet container 20 in FIG. A region that is not heated by the hot air in the inner region of the triangle, with the triangular crease as a boundary, on the triangular crease 28 at the bottom portion to be temporarily folded and the inner region from the crease 28 of the triangle. A non-perforated region 15 having a substantially triangular shape without a hot air blowing hole for forming a difference in strength between the heated portion and the softened portion of the region to which the hot air of the outer region of the triangle is applied; 15 is a liquid sheet container heating device in which a large number of hot air blowing holes b, b,...
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the side ovens 11B and 11B in the heating apparatus 10 for a liquid paper container of the present invention are substantially centered on the inner surfaces of both side ovens 11B and 11B arranged facing the bottom of the liquid paper container 20. A substantially triangular non-hole region 15 is formed in the part, and a large number of hot-air blowing holes b, b... Are arranged around this, and the substantially triangular shape formed on the inner surface side of the side ovens 11B and 11B. The non-perforated region 15 is formed at a position where the triangular folding rules 28, 28 of the second panel 22 and the fourth panel 24 at the bottom of the liquid paper container which are temporarily folded face each other.
[0010]
[Action]
As shown in FIG. 1, the side ovens 11 </ b> B and 11 </ b> B in the heating apparatus 10 for the liquid paper container 20 of the present invention are formed with a substantially triangular non-hole region 15 in the substantially central portion on the inner surface side, and in the periphery thereof. A plurality of hot-air blowing holes b, b... Are provided, and the position of the non-hole region 15 is set so as to face the bottom of the temporarily folded liquid paper container 20 and the second panel of the liquid paper container. 22 and the fourth panel 24 are formed so as to be opposed to the bottom part temporarily folded into a triangular shape . By this apparatus, hot air is blown from the inner surface side and the outer surface side of the bottom of the liquid paper container, and the outer panel is heated and softened between the triangular creases 28 and 28 of the second panel 22 and the fourth panel 24. (A portion facing a large number of hot-air blowing holes b, b... Around the substantially triangular non-porous region 15) and a hard portion that is not heated inside the crease (a portion facing the substantially triangular non-porous region 15) Accordingly, a difference in strength of the paper occurs between the two, and when the bottom portion is sealed, it becomes easy to fold along the crease, thereby eliminating the bending failure (molding failure).
[0011]
【Example】
Hereinafter, an embodiment will be described in detail with reference to the drawings.
FIG. 1 is a side oven in a heating device that seals the bottom of a liquid paper container. FIG. 1 (a) is a bottom view of the side oven, and FIG. 1 (b) shows the arrangement of hot air blowing holes in the side oven. It is a top view. 2A is a schematic view of the heating device at the bottom of the liquid paper container, FIG. 2B is a schematic side view of the heating oven, and FIG. 2C is a view of a hot air blowing hole of the side oven. It is a top view which shows an example of arrangement | positioning. 3A, 3B, and 3C are explanatory views showing a state in which the bottom of the liquid paper container is sealed.
[0012]
Although not shown, the main body of the heating device for the bottom of the liquid paper container according to the present invention is provided with an outer cylindrical body mounted so as to be raised and lowered via a support substrate, a hot air supply unit, a guide cylinder, and an air cylinder. A heating oven 11 is attached to the lower part of the outer cylinder. Then, as shown in FIG. 2A, when the heating oven 11 is lowered, the structure is located near the portions 26 and 26 that are temporarily folded and thermo-compressed to seal the bottom of the liquid paper container 20. It has become.
[0013]
As shown in FIG. 2B, the heating oven 11 in the heating device of the present invention has a structure of a center oven 11A and side ovens 11B and 11B on both sides, and the portions 26 and 26 for sealing the liquid paper container 20 are appropriately provided. It can be positioned at intervals. Reference numeral 12 denotes a hot air supply port from the apparatus main body, b denotes a hot air blowing hole, and an arrow indicates the direction of blowing the hot air from the hot air blowing hole.
That is, the side surface that melts the thermoplastic resin layer on the inner surface side of the sealing portions 26 and 26 according to the shape of the side surface of the tetrahedron of the portions 26 and 26 to be sealed by thermocompression bonding of the temporarily folded liquid paper container 20. Is composed of a tetrahedral center oven 11A and side ovens 11B and 11B that melt the left and right second panels 22 of the sealing portions 26 and 26 and the thermoplastic resin layer on the outer surface side of the fourth panel 24. . In the lower part of the center oven 11A, hot air blowing holes b, b,... Are provided on the entire circumference of the four surfaces facing the inner surfaces of the sealing portions 26, 26. As shown in FIG. Is formed with a substantially triangular non-hole region 15 at the substantially central portion of the inner side surface, and a number of hot air blowing holes b, b is provided, and hot air is blown out from the hole to melt the thermoplastic resin layer of the sealing portion and the sealing portion, and thermocompression bonding is performed. Form. The substantially triangular non-porous region 15 is formed at a position facing the triangular creases 28, 28 on the second panel 22 and the fourth panel 24 that form the bottom of the liquid paper container. It is.
[0014]
As a result, the hot air from the side ovens 11B and 11B concentrates on the sealing portions 26 and 26 from the inner surface side and the outer surface side and is completely sealed by thermocompression bonding, and the second panel 22 and the fourth panel 24 are folded. Since the hot air hits the outer side of the triangular crease and does not hit the inner side, it can be folded along the crease from the creases 28 and 28 and can be completely sealed.
[0015]
Next, using the heating device for the liquid paper container of the present invention, a polyethylene layer (30 μm), a paper material layer (310 g / m 2 ), a polyethylene layer (25 μm), and a polyester film ( 12 μm), an aluminum foil (9 μm), a polyester film (12 μm), and a polyethylene layer (60 μm), which is a thermoplastic resin layer, are thermocompression-bonded and sealed at the bottom of the gable roof-shaped liquid paper container (20). 26, the hot air blowing holes b, b... Mentioned above were blown with hot air of 360 ° C. and 80 mmAq for 1 second to melt the thermoplastic resin layers on the inner and outer surfaces and thermocompression bonded. It was sealed almost flat, and liquid leakage due to poor thermocompression bonding did not occur.
[0016]
【The invention's effect】
The side oven in the heating device for a liquid paper container according to the present invention has a substantially triangular non-porous region formed at a substantially central portion on the inner surface side, and a plurality of hot air blowing holes provided around the non-porous region. The position is formed so as to be opposed to the triangular creases of the second panel and the fourth panel of the liquid paper container when placed facing the bottom of the temporarily folded liquid paper container. is there. By this apparatus, hot air is blown from the inner surface side and the outer surface side of the bottom of the liquid paper container to sandwich the triangular crease between the second panel and the fourth panel, and the heated and soft part on the outside and the inside of the crease Thus, a hard portion that is not heated is formed, and therefore, a difference in strength of the paper occurs between them, and when the bottom portion is sealed, it becomes easy to fold along the crease and the molding defect is eliminated. Accordingly, the bottom of the liquid paper container is sealed almost flat, and liquid leakage due to poor thermocompression bonding does not occur.
[Brief description of the drawings]
1A is a side view of a side oven in a heating apparatus for sealing the bottom of a liquid paper container in an embodiment of the present invention, and FIG. 1B is a bottom view of the side oven, and FIG. It is a top view which shows arrangement | positioning of the hole for blowing.
FIGS. 2A and 2B are diagrams schematically showing a heating device for a liquid paper container bottom according to the present invention, wherein FIG. 2A is a schematic view of a heating device body, and FIG. 2B is a schematic side view of a heating oven; (c) is a top view which shows an example of arrangement | positioning of the hole for hot air blowing of a side oven.
FIG. 3 is an explanatory view showing a state in which the bottom of the liquid paper container according to the present invention is sealed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Heating apparatus main body 11 ... Heating oven 11A ... Center oven 11B ... Side oven 12 ... Hot air supply port 15 ... Non-porous region 20 ... Liquid paper container 21 ... First panel 22 ... Second panel 23 ... Third panel 24 ... First 4 panel 25 ... glue piece 26 ... part 28 to be sealed ... crease b ... hot air blowing hole Hb ... hot air hole Tb from the outside to the part to be sealed ... hot air hole for sealing the bottom

Claims (2)

表面に熱可塑性樹脂層を積層した紙積層材料製からなる、切妻屋根形などの液体用紙容器の仮折りされた底部や頂部などを熱圧着して密封する部分に、熱風を吹きつけて表面の熱可塑性樹脂層を溶かす加熱装置の、前記熱可塑性樹脂層を溶かす底部や頂部に臨ませて配置され、液体用紙容器の内外面に熱風を吹き付けるセンターオーブンと両サイドオーブンとからなる加熱オーブンに、多数の熱風吹き出し用孔を設けて熱風を吹きつける液体用紙容器の加熱装置において、前記液体用紙容器の底部に臨ませて配置される両サイドオーブンの内面側の前記液体用紙容器の第２パネルと第４パネルの三角形状に仮折りされる底部に対向する位置に、三角形の折り罫を境界として、三角形内側領域の熱風を当てない領域の加熱されない堅い部分と三角形外側領域の熱風を当てる領域の加熱され軟らかくなった部分との強度差を形成するための熱風吹き出し用孔の設けられていない略三角形状の無孔領域を設け、該略三角形状の無孔領域の周辺には多数の熱風吹き出し用孔を配置したことを特徴とする液体用紙容器の加熱装置。Hot air is blown on the surface of the liquid paper container, such as a gable roof, which is made of a paper laminate material with a thermoplastic resin layer laminated on the surface, and is sealed by thermocompression bonding. In a heating oven consisting of a center oven and both side ovens, which are arranged facing the bottom and top of the thermoplastic resin layer, and which blows hot air on the inner and outer surfaces of the liquid paper container, In a heating apparatus for a liquid paper container in which a large number of hot air blowing holes are provided to blow hot air, the second panel of the liquid paper container on the inner surface side of both side ovens disposed facing the bottom of the liquid paper container; fourth panel position facing the bottom is temporarily folded in a triangular shape, as a boundary the ruling folding triangle, a rigid portion which is not heated in the region not irradiated with hot air triangular inner region three Provided substantially triangular imperforate areas not provided the hot-air blowing hole for forming the intensity difference between the heated softened became part of the area of blowing hot air of Katachisotogawa region, the symbolic triangular imperforate An apparatus for heating a liquid paper container, wherein a large number of hot air blowing holes are arranged around the area. 表面に熱可塑性樹脂層を積層した紙積層材料製からなる、切妻屋根形などの液体用紙容器の仮折りされた底部や頂部などを熱圧着して密封する部分に、熱風を吹きつけて表面の熱可塑性樹脂層を溶かす加熱装置の、前記熱可塑性樹脂層を溶かす底部や頂部に臨ませて配置され、液体用紙容器の内外面に熱風を吹き付けるセンターオーブンと両サイドオーブンとからなる加熱オーブンに、多数の熱風吹き出し用孔を設けて熱風を吹きつける液体用紙容器の加熱装置において、前記液体用紙容器の底部に臨ませて配置される両サイドオーブンの内面側の前記液体用紙容器の第２パネルと第４パネルの三角形状に仮折りされる底部の三角形の折り罫上とその三角形の折り罫より内側領域とに対向する位置に、三角形の折り罫を境界として、三角形内側領域の熱風を当てない領域の加熱されない堅い部分と三角形外側領域の熱風を当てる領域の加熱され軟らかくなった部分との強度差を形成するための熱風吹き出し用孔の設けられていない略三角形状の無孔領域を設け、該無孔領域の周辺には多数の熱風吹き出し用孔を配置したことを特徴とする液体用紙容器の加熱装置。Hot air is blown on the surface of the liquid paper container, such as a gable roof, which is made of a paper laminate material with a thermoplastic resin layer laminated on the surface, and is sealed by thermocompression bonding. In a heating oven consisting of a center oven and both side ovens, which are arranged facing the bottom and top of the thermoplastic resin layer, and which blows hot air on the inner and outer surfaces of the liquid paper container, In a heating apparatus for a liquid paper container in which a large number of hot air blowing holes are provided to blow hot air, the second panel of the liquid paper container on the inner surface side of both side ovens disposed facing the bottom of the liquid paper container; the fourth panel of triangular shape provisional folded the bottom of the triangular folding on ruffled and at a position opposite from the folding crease of the triangle into an inner region, the ruling folding triangle as a boundary, the triangle A substantially triangular shape without hot air blowing holes for forming a difference in strength between the unheated hard portion of the region not exposed to hot air and the heated and soft portion of the region exposed to hot air in the outer region of the triangle. An apparatus for heating a liquid paper container, wherein a non-porous region is provided, and a large number of hot air blowing holes are arranged around the non-porous region .
JP03656596A 1996-02-23 1996-02-23 Liquid paper container heating device Expired - Fee Related JP3621183B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP03656596A JP3621183B2 (en) 1996-02-23 1996-02-23 Liquid paper container heating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP03656596A JP3621183B2 (en) 1996-02-23 1996-02-23 Liquid paper container heating device

Publications (2)

Publication Number Publication Date
JPH09226705A JPH09226705A (en) 1997-09-02
JP3621183B2 true JP3621183B2 (en) 2005-02-16

Family

ID=12473293

Family Applications (1)

Application Number Title Priority Date Filing Date
JP03656596A Expired - Fee Related JP3621183B2 (en) 1996-02-23 1996-02-23 Liquid paper container heating device

Country Status (1)

Country Link
JP (1) JP3621183B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114275250B (en) * 2022-01-17 2023-07-25 东莞市立茗机械有限公司 Full-automatic tea and coffee filtering and sealing integrated packaging equipment

Also Published As

Publication number Publication date
JPH09226705A (en) 1997-09-02

Similar Documents

Publication Publication Date Title
AU685252B2 (en) Packaging container
US4566927A (en) Pattern bonding of webs by electron beam curing
US3912576A (en) Carton sealing apparatus
JPH0759421B2 (en) Folding box container
US4308988A (en) Envelope
JP3621183B2 (en) Liquid paper container heating device
US4201609A (en) Method for T or butt sealing of laminated all-plastic material
US2114623A (en) Method of providing for internal atmospheric expansion of filled bags and hermetically sealing same
CS229912B2 (en) Citern cut sizes from flexible sheet material
CA1245901A (en) Method and means for joining and sealing of material parts and use of such means in containers
JP2000238759A (en) Paper tray
JP3136982B2 (en) Liquid paper container heating device
JPH04109017U (en) paper liquid container
CA1077666A (en) Method for t or butt sealing of laminated all-plastic material
JP3747676B2 (en) Container body joining method and container produced by the body joining method
JP3541670B2 (en) Heating method for gable roof paper container and heating device using the heating method
JP3134759B2 (en) Liquid paper container heating device
JP2000168737A (en) Hermetical sealing of paper container, and forming device using the same method
USRE21971E (en) Packaging structure
JPH0986520A (en) Hot air heating device for sealing paper container for liquid
JPH05124636A (en) Blank board
JPH08301207A (en) Apparatus for preheating paper container for liquid
JP3887069B2 (en) Packaging container manufacturing equipment
AU722690B2 (en) Packaging container
JP2005162296A (en) Sealing apparatus and packaging material for paper container

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20041006

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20041117

R150 Certificate of patent (=grant) or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

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

Free format text: PAYMENT UNTIL: 20071126

Year of fee payment: 3

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

Free format text: PAYMENT UNTIL: 20081126

Year of fee payment: 4

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

Free format text: PAYMENT UNTIL: 20091126

Year of fee payment: 5

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

Free format text: PAYMENT UNTIL: 20091126

Year of fee payment: 5

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

Free format text: PAYMENT UNTIL: 20101126

Year of fee payment: 6

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

Free format text: PAYMENT UNTIL: 20111126

Year of fee payment: 7

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

Free format text: PAYMENT UNTIL: 20121126

Year of fee payment: 8

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

Free format text: PAYMENT UNTIL: 20121126

Year of fee payment: 8

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

Free format text: PAYMENT UNTIL: 20131126

Year of fee payment: 9

LAPS Cancellation because of no payment of annual fees