JP2013124136A - Heating device for heat sealing - Google Patents

Heating device for heat sealing Download PDF

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JP2013124136A
JP2013124136A JP2011275941A JP2011275941A JP2013124136A JP 2013124136 A JP2013124136 A JP 2013124136A JP 2011275941 A JP2011275941 A JP 2011275941A JP 2011275941 A JP2011275941 A JP 2011275941A JP 2013124136 A JP2013124136 A JP 2013124136A
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hot air
packaging
temperature
filling
density polyethylene
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Satoshi Eto
聡 衞藤
Nao Omiya
尚 大宮
Naoki Akamatsu
直樹 赤松
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Nihon Tetra Pak KK
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Nihon Tetra Pak KK
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Abstract

PROBLEM TO BE SOLVED: To provide a heating device for heat sealing capable of suppressing needless energy consumption at idling and performing stable heat sealing immediately when a packaging/filling machine starts a filling/packaging operation.SOLUTION: There is provided the heating device 1 for heat sealing of the packaging and filling machine for use in filling liquid food to a roof-shaped paper container, wherein hot air is blown against the portions to be heated of a bottom part/top part of a cylindrical body made of laminated material having a low density polyethylene layer so as to heat and press fit a thermoplastic resin layer against it. The heating device 1 for heat sealing comprises a heater 6 for heating cleaning air, a hot air jetting nozzle 2 facing a portion to be heated, a temperature sensor 4 for measuring a temperature of the hot air, and a controller 5 for controlling a temperature of the hot air. The controller 5 sets the temperature of the hot air to 405°C to 365°C when filling/packaging by the packaging/filling machine, and further sets the temperature of the hot air to 210°C to 190°C when it keeps a state where it can adapt immediately for the filling/packaging of the packaging/filling machine.

Description

本発明は、ジュース等飲料の液体紙容器の包装充填に使用されるヒートシール用加熱装置に関する。 The present invention relates to a heat-sealing heating device used for packaging and filling liquid paper containers for beverages such as juice.

ジュース、牛乳、ミネラルウォータ、緑茶など低粘性液体食品、流動食品などの包装充填容器は、例えば、基材(例えば、紙などの繊維質及びプラスチック)/必要に応じてアルミ箔などのバリア層/ヒートシール層の積層体に、外観デザインが印刷されたウェブ状包装材料などの包装積層材料から得られる。
包装充填容器には、レンガ型包装充填、屋根型包装容器、紙製本体と本体端にインジェクション成形された蓋とからなる複合容器、及び紙製本体と本体端に接合されたプラスチック頂部とからなる複合容器などがある。
Packing and filling containers such as juice, milk, mineral water, green tea and other low-viscosity liquid foods, fluid foods, etc., for example, base materials (for example, fibers and plastics such as paper) / barrier layers such as aluminum foil / It is obtained from a packaging laminate material such as a web-like packaging material in which an exterior design is printed on a laminate of heat seal layers.
The packaging filling container comprises a brick type packaging filling, a roof type packaging container, a composite container comprising a paper main body and a lid formed by injection molding at the main body end, and a plastic main body joined to the paper main body and the main body end. There are composite containers.

屋根型包装容器では、表面に製品の外観デザインが印刷された包装材料を所定の形状に裁断してブランクスとし、容器縦方向にシールした筒状体を得、充填機内で筒状体の底をシールした後に上部開口から牛乳、ジュースの飲料を充填し、上部をシールして得られる。
例えば、図5に示す態様の屋根型(ゲーブトップ)紙容器用包装充填機では、平行する2列(ライン)の包装充填ラインからなり、折目線が付けられた印刷済み積層包装材料が、図4に示す所定形状に裁断され、容器縦方向に縦シールした筒状体(ブランクス)31を得る。筒状体の底が、ボトムシーラの加熱装置を含む底部シール手段32でシールされ、充填ステーション34aで容器33の上部の開放口から液体食品が充填手段34でヘッドスペースを残して充填され、上部開放口が折目線に沿って内側に折り込んで、順次閉鎖され、予熱ステーション35a及び、トップシールステーション35bで容器33の上端が、トップシーラの加熱装置を含むトップシール手段35でヒートシールされて、図5の部分拡大図及び図3に示すような屋根型包装充填容器36を得る。
In a roof-type packaging container, the packaging material with the appearance design printed on the surface is cut into a predetermined shape to obtain a cylindrical body sealed in the vertical direction of the container, and the bottom of the cylindrical body is placed inside the filling machine. After sealing, it is obtained by filling milk and juice drinks from the upper opening and sealing the upper part.
For example, in the roof-type (gave top) paper container packaging and filling machine of the embodiment shown in FIG. 5, a printed laminated packaging material having two lines (line) of parallel packaging filling lines and with crease lines attached is shown in FIG. The cylindrical body (blanks) 31 cut into a predetermined shape shown in FIG. 4 and vertically sealed in the container vertical direction is obtained. The bottom of the cylindrical body is sealed with a bottom sealing means 32 including a heating device for a bottom sealer, and liquid food is filled from the opening at the top of the container 33 at the filling station 34a with the filling means 34 leaving a head space, and the top is opened. The mouth is folded inward along the crease line and sequentially closed. At the preheating station 35a and the top sealing station 35b, the upper end of the container 33 is heat sealed by a top sealing means 35 including a top sealer heating device. 5 is obtained, and a roof-type package filling container 36 as shown in FIG. 3 is obtained.

底部シール手段及びトップシール手段における、シールは、内外面に熱可塑性樹脂層を設けた紙積層材料からなる筒状体の底部、頂部に、熱風を密封部分に吹きつけて、熱可塑性樹脂層を軟化/溶融して圧着し、密封して屋根型紙容器36を得る。
紙容器の筒状体31の頂部の密封は、図2に示すように、ヒートシール用加熱装置1を用いる。加熱装置によって、その側面に多数配置した円形又はスリット状の小孔のパターンの吹出し口2から吹き出す熱風によって、上部開放口の内側の加熱すべき部分で、熱可塑性樹脂層が加熱溶融され、圧着される。
In the bottom seal means and the top seal means, the seal is formed by blowing hot air on the bottom and top of a cylindrical body made of a paper laminate material provided with a thermoplastic resin layer on the inner and outer surfaces to the sealed portion. The roof paper container 36 is obtained by softening / melting and pressing and sealing.
As shown in FIG. 2, the heat sealing heating device 1 is used to seal the top of the cylindrical body 31 of the paper container. The thermoplastic resin layer is heated and melted at the portion to be heated inside the upper opening by hot air blown out from the blowout port 2 of a circular or slit-like small hole pattern arranged on the side surface by the heating device, and pressure bonding Is done.

紙容器の筒状体の底部の密封は、図1に示すように、ヒートシール用加熱装置1を用いる。加熱装置によって、その側面に多数配置した円形又はスリット状の小孔のパターンの吹出し口2から吹き出す熱風によって、筒状体31の底部(筒状体が逆さま状態でシールされるので、上向きに図示される)の内側の加熱すべき部分で、熱可塑性樹脂層が加熱溶融され、圧着される。 For sealing the bottom of the cylindrical body of the paper container, a heating device 1 for heat sealing is used, as shown in FIG. The bottom of the cylindrical body 31 (the cylindrical body is sealed upside down by the hot air blown out from the blowout port 2 of the circular or slit-like small hole pattern arranged on the side surface by the heating device, so that it is shown upward. The thermoplastic resin layer is heated and melted and pressure-bonded at a portion to be heated inside.

特開平10ー101003号公報JP-A-10-101003 特開平10ー53204号公報JP-A-10-53204

屋根型紙容器用包装充填機では、底部シール及びトップシールのために、通常、電熱ヒータが使用されている。この充填機起動時より、低密度ポリエチレンを含む熱可塑性樹脂層を溶融してシールするために、通常、400℃程度に保持されている。この400℃程度の温度は、紙容器のシール時にポリエチレンを溶融するのに必要な温度である。 In the roof paper container packaging and filling machine, an electric heater is usually used for the bottom seal and the top seal. In order to melt and seal the thermoplastic resin layer containing the low-density polyethylene from the start of the filling machine, the temperature is usually kept at about 400 ° C. This temperature of about 400 ° C. is a temperature necessary for melting polyethylene when the paper container is sealed.

しかし、アイドリング時にも400℃程度の温度を保持する必要はない。また。このアイドリング運転は、充填機稼働時間の1/4程度の時間を占めることもある。アイドリング時に電熱ヒータをオフにすると、直ちに適切な温度に安定して上昇させることが難しい。加熱すべき部分で、熱可塑性樹脂層が過熱されてポリエチレンが焦げ、又は、ポリエチレンが十分に溶融されず、ヒートシールが確実にされない不都合がある。 However, it is not necessary to maintain a temperature of about 400 ° C. even during idling. Also. This idling operation may occupy about 1/4 of the filling machine operating time. If the electric heater is turned off during idling, it is difficult to immediately increase the temperature to an appropriate temperature. There is a disadvantage that the thermoplastic resin layer is overheated at the portion to be heated and the polyethylene is burnt, or the polyethylene is not sufficiently melted and heat sealing is not ensured.

本発明は、アイドリング時の不必要なエネルギー消費を抑え、包装充填機の充填/包装を開始する時に、直ちに、安定したヒートシールを可能にするヒートシール用加熱装置を提供することを目的とする。   It is an object of the present invention to provide a heating device for heat sealing that suppresses unnecessary energy consumption during idling and enables stable heat sealing immediately when filling / packaging of a packaging filling machine is started. .

本発明の加熱装置は、液体食品を屋根型紙容器に充填して包装する包装充填機において、内外面に、低密度ポリエチレンを含む熱可塑性樹脂層を積層した積層材料の筒状体の、底部または頂部の加熱すべき部分に熱風を吹き付けて、熱可塑性樹脂層を加熱・圧着して密封する、ヒートシール用加熱装置であって、
ヒートシール用加熱装置は、清浄エアを加熱するヒータと、加熱すべき部分に対向した熱風噴射ノズルと、熱風の温度を測定する温度センサと、熱風の温度を制御するコントローラとを備え、
コントローラが、包装充填機の充填/包装時に、熱風の温度を405℃〜365℃に設定し、包装充填機の充填/包装に即応できる様態を維持する時に、熱風の温度を210℃〜190℃に設定することを特徴とする。
The heating device of the present invention is a packaging and filling machine that fills and packs liquid food in a roof-type paper container, and the bottom or the bottom of a cylindrical body of a laminated material in which a thermoplastic resin layer containing low-density polyethylene is laminated on the inner and outer surfaces. A heating device for heat sealing, in which hot air is blown to a portion to be heated at the top, and the thermoplastic resin layer is heated and pressed and sealed,
The heating device for heat sealing includes a heater for heating clean air, a hot air injection nozzle facing a portion to be heated, a temperature sensor for measuring the temperature of the hot air, and a controller for controlling the temperature of the hot air,
When the controller sets the hot air temperature to 405 ° C. to 365 ° C. during filling / packaging of the packaging filling machine and maintains the state ready for filling / packaging of the packaging filling machine, the hot air temperature is set to 210 ° C. to 190 ° C. It is characterized by setting to.

この発明の好ましい態様において、熱可塑性樹脂の低密度ポリエチレンが、低密度ポリエチレン(LDPE)、中密度ポリエチレン(MDPE)、高密度ポリエチレン(HDPE)、線状低密度ポリエチレン(LLDPE)、メタロセン触媒を用いて製造した線状低密度ポリエチレン(mLLDPE)、又は、これらのブレンドである。 In a preferred embodiment of the present invention, the low density polyethylene of the thermoplastic resin is a low density polyethylene (LDPE), a medium density polyethylene (MDPE), a high density polyethylene (HDPE), a linear low density polyethylene (LLDPE), or a metallocene catalyst. The linear low density polyethylene (mLLDPE) manufactured by the above, or a blend thereof.

この発明の好ましい態様において、熱風噴射ノズルが、容器面の加熱すべき部分から、熱風温度が実質的に低下しない位置に、包装充填機の充填/包装時に、配置される。 In a preferred embodiment of the present invention, the hot air injection nozzle is disposed at a position where the hot air temperature is not substantially lowered from the portion to be heated on the container surface during filling / packaging of the packaging filling machine.

本発明によるヒートシール用加熱装置の作用/動作及び効果を以下に説明する。
本発明の加熱装置は、液体食品を屋根型紙容器に充填して包装する包装充填機内に設けられる装置である。
この包装充填機では、折目線が付けられた印刷済み積層包装材料が、所定形状に裁断され、容器縦方向に縦シールした筒状体を得る。筒状体の底が底部シール手段でシールされ、容器の上部の開放口から液体食品が充填され、トップシール手段で上部がヒートシールされて、屋根型包装充填容器を得る。
The operation / operation and effect of the heating device for heat sealing according to the present invention will be described below.
The heating apparatus of the present invention is an apparatus provided in a packaging and filling machine that fills and packs liquid food in a roof paper container.
In this packaging and filling machine, a printed laminated packaging material with a crease line is cut into a predetermined shape to obtain a cylindrical body that is vertically sealed in the container vertical direction. The bottom of the cylindrical body is sealed with a bottom sealing means, liquid food is filled from the opening at the top of the container, and the top is heat sealed with a top sealing means to obtain a roof-type package filling container.

この発明によるヒートシール用加熱装置は、内外面に、低密度ポリエチレンを含む熱可塑性樹脂層を積層した積層材料の筒状体の、底部または頂部の加熱すべき部分に熱風を吹き付けて、熱可塑性樹脂層を加熱・圧着して密封する底部シール手段及び/又はトップシール手段である。
この熱風の熱エネルギーが、底部または頂部の加熱すべき部分の低密度ポリエチレンに移動して低密度ポリエチレンの温度が、軟化点、更に、融点まで到達して、シール可能状態になる。上記のシール手段では、底部または頂部を外側から押圧するので、加熱すべき部分が対応する部分と固着する。
The heating device for heat sealing according to the present invention is characterized in that hot air is blown to a portion to be heated at the bottom or top of a cylindrical body of a laminated material in which a thermoplastic resin layer containing low density polyethylene is laminated on the inner and outer surfaces. It is a bottom sealing means and / or a top sealing means for sealing the resin layer by heating and pressure bonding.
The heat energy of the hot air is transferred to the low density polyethylene at the bottom or the top of the portion to be heated, and the temperature of the low density polyethylene reaches the softening point and further the melting point, so that the sealable state is achieved. In the above sealing means, the bottom portion or the top portion is pressed from the outside, so that the portion to be heated adheres to the corresponding portion.

この発明によるヒートシール用加熱装置は、清浄エアを加熱するヒータと、加熱すべき部分に対向した熱風噴射ノズルと、熱風の温度を測定する温度センサと、熱風の温度を制御するコントローラとを備える。
このヒートシール用加熱装置では、清浄エアが供給され、ヒータが清浄エアを加熱し、噴射ノズルが加熱すべき部分に対向し、その部分に向けて熱風を噴射し、加熱すべき部分の低密度ポリエチレンを軟化・溶融する。
このヒートシール用加熱装置では、温度センサが、熱風の温度を測定し、測定した温度信号をコントローラに送信する。コントローラは、ヒータの出力、清浄エアの風量や風圧などを変えて、後述する条件で、熱風の温度を制御する。
A heating device for heat sealing according to the present invention includes a heater for heating clean air, a hot air injection nozzle facing a portion to be heated, a temperature sensor for measuring the temperature of the hot air, and a controller for controlling the temperature of the hot air. .
In this heating device for heat sealing, clean air is supplied, the heater heats the clean air, the spray nozzle faces the part to be heated, the hot air is jetted toward the part, and the low density of the part to be heated Soften and melt polyethylene.
In this heat sealing heating apparatus, the temperature sensor measures the temperature of the hot air and transmits the measured temperature signal to the controller. The controller controls the temperature of the hot air under the conditions described later by changing the output of the heater, the amount of clean air, the wind pressure, and the like.

このヒートシール用加熱装置の特徴では、コントローラが、包装充填機の充填/包装時に、熱風の温度を405℃〜365℃に設定し、包装充填機の充填/包装に即応できる様態を維持する時に、熱風の温度を210℃〜190℃に設定する。
充填/包装時に、熱風の温度が405℃を超えると、加熱すべき部分の熱可塑性樹脂層が過熱されてポリエチレンが焦げる恐れがあり、365℃未満では、ポリエチレンが十分に溶融されず、ヒートシールが確実にされない不都合がある。
包装充填機の充填/包装に即応できる様態を維持する時(アイドリング時)に、熱風の温度が210℃を超えると、この温度を維持するために多くのエネルギーを要し、190℃未満では、充填/包装に即応できず、熱可塑性樹脂層が低密度ポリエチレンが直ちに十分に軟化・溶融されない。
The heat sealing heating device is characterized in that the controller sets the hot air temperature to 405 ° C. to 365 ° C. at the time of filling / packaging of the packaging filling machine, and maintains a state ready for filling / packaging of the packaging filling machine. The temperature of the hot air is set to 210 ° C to 190 ° C.
At the time of filling / packaging, if the temperature of the hot air exceeds 405 ° C, the thermoplastic resin layer of the portion to be heated may be overheated and the polyethylene may be burnt. If it is less than 365 ° C, the polyethylene is not sufficiently melted and heat sealing There is an inconvenience that cannot be ensured.
When maintaining the state ready for filling / packaging of the packaging filling machine (during idling), if the temperature of hot air exceeds 210 ° C, a lot of energy is required to maintain this temperature, and below 190 ° C, It cannot be used immediately for filling / packaging, and the thermoplastic resin layer does not immediately soften or melt the low-density polyethylene sufficiently.

この発明の好ましい態様において、熱可塑性樹脂の低密度ポリエチレンが、低密度ポリエチレン(LDPE)、中密度ポリエチレン(MDPE)、高密度ポリエチレン(HDPE)、線状低密度ポリエチレン(LLDPE)、メタロセン触媒を用いて製造した線状低密度ポリエチレン(mLLDPE)、又は、これらのブレンドである。
上記熱可塑性樹脂によって、屋根型紙容器の防水性、印刷可能性などと共に、良好なヒートシール性を確保することができる。
In a preferred embodiment of the present invention, the low density polyethylene of the thermoplastic resin is a low density polyethylene (LDPE), a medium density polyethylene (MDPE), a high density polyethylene (HDPE), a linear low density polyethylene (LLDPE), or a metallocene catalyst. The linear low density polyethylene (mLLDPE) manufactured by the above, or a blend thereof.
With the thermoplastic resin, it is possible to ensure good heat sealability as well as waterproofness and printability of the roof paper container.

この発明の好ましい態様において、熱風噴射ノズルが、容器面の加熱すべき部分から、熱風温度が実質的に低下しない位置に、包装充填機の充填/包装時に、配置される。
この態様によって、熱風温度が実質的に低下しないので、コントロールされた条件で熱可塑性樹脂の低密度ポリエチレンを加熱し、軟化・溶融することができる。
In a preferred embodiment of the present invention, the hot air injection nozzle is disposed at a position where the hot air temperature is not substantially lowered from the portion to be heated on the container surface during filling / packaging of the packaging filling machine.
According to this embodiment, since the hot air temperature does not substantially decrease, the low-density polyethylene thermoplastic resin can be heated, softened and melted under controlled conditions.

この発明に使用できる底部シール手段例の概略側面図である。It is a schematic side view of the example of a bottom part sealing means which can be used for this invention. この発明に使用できるトップシール手段例の概略側面図である。It is a schematic side view of the example of the top seal means which can be used for this invention. この発明に使用できる屋根型紙容器の一部透視/外観図である。It is a partial perspective / outside view of a roof-type paper container that can be used in the present invention. この発明に使用できる屋根型紙容器の展開図である。It is an expanded view of the roof-type paper container which can be used for this invention. この発明に使用できる屋根型紙容器用の包装充填機の概略図である。It is the schematic of the packaging filling machine for roof type | mold paper containers which can be used for this invention.

以下、本発明の実施の形態について図面を参照しながら詳細に説明する。
本発明による態様の加熱装置は、液体食品を屋根型紙容器に充填して包装する図5に示す包装充填機内に設けられる装置である。
図5の包装充填機では、折目線が付けられた印刷済み積層包装材料が、所定形状に裁断され、容器縦方向に縦シールした筒状体31を得る。筒状体31の底が底部シール手段32でシールされ、容器の上部の開放口から液体食品が充填され、トップシール手段35で上部がヒートシールされて、屋根型包装充填容器36を得る。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
The heating apparatus according to the embodiment of the present invention is an apparatus provided in a packaging and filling machine shown in FIG. 5 that fills and packs liquid food in a roof paper container.
In the packaging filling machine of FIG. 5, the printed laminated packaging material with crease lines is cut into a predetermined shape, and a cylindrical body 31 that is vertically sealed in the container vertical direction is obtained. The bottom of the cylindrical body 31 is sealed by the bottom sealing means 32, filled with liquid food from the opening at the top of the container, and the top is heat-sealed by the top sealing means 35 to obtain the roof-type package filling container 36.

この態様によるヒートシール用加熱装置1は、内外面に、低密度ポリエチレンを含む熱可塑性樹脂層を積層した積層材料の筒状体31の、底部または頂部の加熱すべき部分に熱風を吹き付けて、熱可塑性樹脂層を加熱・圧着して密封する底部シール手段32(図1)及び/又はトップシール手段35(図2)である。
熱風の熱エネルギーが、筒状体31の底部または頂部の加熱すべき部分の低密度ポリエチレンに移動して低密度ポリエチレンの温度が、軟化点、更に、融点まで到達して、シール可能状態になる。底部シール手段32(図1)及び/又はトップシール手段35(図2)では、更に、又は、引き続き、底部または頂部を外側から押圧するので、加熱すべき部分が対応する部分と固着する。
The heating device 1 for heat sealing according to this aspect blows hot air on a portion to be heated at the bottom or top of the cylindrical body 31 of a laminated material in which a thermoplastic resin layer containing low density polyethylene is laminated on the inner and outer surfaces, The bottom sealing means 32 (FIG. 1) and / or the top sealing means 35 (FIG. 2) for sealing the thermoplastic resin layer by heating and pressure bonding.
The thermal energy of the hot air moves to the low density polyethylene at the bottom or top of the cylindrical body 31 to be heated, and the temperature of the low density polyethylene reaches the softening point and further the melting point, and the sealable state is reached. . In the bottom sealing means 32 (FIG. 1) and / or the top sealing means 35 (FIG. 2), the bottom or top is further pressed from the outside, so that the part to be heated adheres to the corresponding part.

この態様による図1の底部ヒートシール用加熱装置1は、清浄エアを供給するホース3と、清浄エアを加熱するヒータ6(点線)と、加熱すべき部分に対向した小孔の熱風噴射ノズル2と、熱風の温度を測定する温度センサ4と、熱風の温度を制御するコントローラ5とを備える。
このヒートシール用加熱装置1では、ホース3から清浄エアが供給され、ヒータ6が清浄エアを加熱し、噴射ノズル2が加熱すべき部分31に対向し、その部分31に向けて熱風を噴射し、加熱すべき部分の低密度ポリエチレンを軟化・溶融する。
このヒートシール用加熱装置1では、温度センサ4が、熱風の温度を測定し、測定した温度信号をコントローラ5に送信する。コントローラ5は、ヒータ6の出力、清浄エアの風量や風圧などを設定し、熱風の温度を制御する。
1 according to this embodiment includes a hose 3 for supplying clean air, a heater 6 for heating clean air (dotted line), and a hot air injection nozzle 2 having a small hole facing the portion to be heated. And a temperature sensor 4 that measures the temperature of the hot air, and a controller 5 that controls the temperature of the hot air.
In the heat sealing heating device 1, clean air is supplied from the hose 3, the heater 6 heats the clean air, the spray nozzle 2 faces the portion 31 to be heated, and hot air is sprayed toward the portion 31. Then, soften and melt the low density polyethylene in the part to be heated.
In the heat sealing heating apparatus 1, the temperature sensor 4 measures the temperature of the hot air and transmits the measured temperature signal to the controller 5. The controller 5 controls the temperature of the hot air by setting the output of the heater 6, the amount of clean air, the air pressure, and the like.

この態様による図2のトップヒートシール用加熱装置1は、清浄エアを供給するホース3と、清浄エアを加熱するヒータ6(点線)と、加熱すべき部分に対向した小孔の熱風噴射ノズル2と、熱風の温度を測定する温度センサ4と、熱風の温度を制御するコントローラ5とを備える。
このヒートシール用加熱装置1では、ホース3から清浄エアが供給され、ヒータ6が清浄エアを加熱し、噴射ノズル2が加熱すべき部分31に対向し、その部分31に向けて熱風を噴射し、加熱すべき部分の低密度ポリエチレンを軟化・溶融する。
このヒートシール用加熱装置1では、温度センサ4が、熱風の温度を測定し、測定した温度信号をコントローラ5に送信する。コントローラ5は、ヒータ6の出力、清浄エアの風量や風圧などを設定し、熱風の温度を制御する。
The top heat sealing heating device 1 of FIG. 2 according to this embodiment includes a hose 3 for supplying clean air, a heater 6 (dotted line) for heating clean air, and a hot air injection nozzle 2 having a small hole facing the portion to be heated. And a temperature sensor 4 that measures the temperature of the hot air, and a controller 5 that controls the temperature of the hot air.
In the heat sealing heating device 1, clean air is supplied from the hose 3, the heater 6 heats the clean air, the spray nozzle 2 faces the portion 31 to be heated, and hot air is sprayed toward the portion 31. Then, soften and melt the low density polyethylene in the part to be heated.
In the heat sealing heating apparatus 1, the temperature sensor 4 measures the temperature of the hot air and transmits the measured temperature signal to the controller 5. The controller 5 controls the temperature of the hot air by setting the output of the heater 6, the amount of clean air, the air pressure, and the like.

この態様の加熱装置1では、コントローラ5が、包装充填機の充填/包装時に、熱風の温度を405℃〜365℃に設定し、包装充填機の充填/包装に即応できる様態を維持する時に、熱風の温度を210℃〜190℃に設定する。
実施例において、充填/包装時に、熱風の温度を405℃を超える温度に上げると、加熱すべき部分の熱可塑性樹脂層が過熱されてポリエチレンが焦げた。また、365℃未満では、ポリエチレンが十分に溶融されず、ヒートシールが確実にされない不都合が生じた。
実施例において、包装充填機のアイドリング時に、熱風の温度が210℃を超える温度に上げると、この温度を維持するために多くのエネルギーを要し、190℃未満では、充填/包装に即応できず、熱可塑性樹脂層が低密度ポリエチレンが直ちに十分に軟化・溶融されない。
In the heating apparatus 1 of this aspect, when the controller 5 sets the temperature of the hot air to 405 ° C. to 365 ° C. during filling / packaging of the packaging filling machine, and maintains the state in which it can immediately respond to filling / packaging of the packaging filling machine, The temperature of the hot air is set to 210 ° C to 190 ° C.
In the examples, when the temperature of hot air was raised to a temperature exceeding 405 ° C. during filling / packaging, the thermoplastic resin layer in the portion to be heated was overheated and the polyethylene was burnt. Further, when the temperature is less than 365 ° C., the polyethylene is not sufficiently melted, and there is a problem that heat sealing is not ensured.
In the embodiment, when the temperature of the hot air is raised to a temperature exceeding 210 ° C. during idling of the packaging filling machine, a lot of energy is required to maintain this temperature. The low-density polyethylene is not sufficiently softened or melted immediately by the thermoplastic resin layer.

[実施例]
包装充填機(テトラパック社製TR/17型)を使用した例を以下に示す。
ヒートシールに電熱ヒータが使用された充填機では、起動時より400℃に保持された。400℃は、シール時にポリエチレンを溶融するのに必要な温度である。アイドリング時も400℃で保持した比較例と、アイドリング時に370℃から200℃に下げて維持した実施例とを比較した。
アイドリング運転は、充填機稼働時間の1/4程度の時間を占めた。
アイドリング時に200℃に下げて維持した実施例では、再スタート時のシール不良もなく、運転を再開することができた。
また、比較例と比べて、実施例では、約25%の省エネ効果が得られた。
[Example]
An example using a packaging and filling machine (TR / 17 type manufactured by Tetra Pak) is shown below.
In a filling machine in which an electric heater was used for heat sealing, the temperature was maintained at 400 ° C. from the start. 400 ° C. is a temperature necessary for melting polyethylene at the time of sealing. A comparative example maintained at 400 ° C. during idling and an example maintained at 370 ° C. to 200 ° C. during idling were compared.
The idling operation took about ¼ of the filling machine operation time.
In the example maintained at 200 ° C. during idling, the operation could be resumed without a sealing failure at the time of restart.
In addition, compared with the comparative example, the energy saving effect of about 25% was obtained in the example.

この態様において、熱可塑性樹脂の低密度ポリエチレンが、高圧法で重合して得た低密度ポリエチレン(LDPE)である。
上記熱可塑性樹脂によって、屋根型紙容器の防水性、印刷可能性などと共に、良好なヒートシール性を確保することができる。
In this embodiment, the low density polyethylene of the thermoplastic resin is a low density polyethylene (LDPE) obtained by polymerization by a high pressure method.
With the thermoplastic resin, it is possible to ensure good heat sealability as well as waterproofness and printability of the roof paper container.

この態様において、熱風噴射ノズルが、容器面の加熱すべき部分から、熱風温度が実質的に低下しない近接した位置に、包装充填機の充填/包装時に、配置される。
この態様によって、熱風温度が実質的に低下しないので、コントロールされた条件で熱可塑性樹脂の低密度ポリエチレンを加熱し、軟化・溶融することができる。
In this aspect, the hot air injection nozzle is disposed at a position where the hot air temperature is not substantially lowered from the portion to be heated on the container surface during filling / packaging of the packaging filling machine.
According to this embodiment, since the hot air temperature does not substantially decrease, the low-density polyethylene thermoplastic resin can be heated, softened and melted under controlled conditions.

なお、本発明は前記実施の形態に限定されるものではなく、本発明の趣旨に基づいて種々変形させることが可能であり、それらを本発明の範囲から排除するものではない。 In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

この発明は、ジュース等飲料の液体紙容器の包装充填に利用することができる。 The present invention can be used for packaging and filling liquid paper containers for beverages such as juice.

1 容器
2 熱風噴射ノズル
3 ホース
4 温度センサ
5 コントローラ
6 ヒータ
1 Container 2 Hot Air Injection Nozzle 3 Hose 4 Temperature Sensor 5 Controller 6 Heater

Claims (3)

液体食品を屋根型紙容器に充填して包装する包装充填機において、内外面に、低密度ポリエチレンを含む熱可塑性樹脂層を積層した積層材料の筒状体の、底部または頂部の加熱すべき部分に熱風を吹き付けて、前記熱可塑性樹脂層を加熱・圧着して密封する、ヒートシール用加熱装置であって、
清浄エアを加熱し熱風を調製するヒータと、加熱すべき部分に対向した熱風噴射ノズルと、熱風の温度を測定する温度センサと、熱風の温度を制御するコントローラとを備え、
該コントローラが、該包装充填機の充填/包装時に、熱風の温度を405℃〜365℃に設定し、該包装充填機の充填/包装に即応できる様態を維持する時に、熱風の温度を210℃〜190℃に設定することを特徴とする加熱装置。
In a packaging and filling machine that fills and packs liquid food in a roof paper container, on the bottom or top of the tubular body of laminated material in which a thermoplastic resin layer containing low-density polyethylene is laminated on the inner and outer surfaces A heating device for heat sealing that blows hot air and heats and presses and seals the thermoplastic resin layer,
A heater for preparing hot air by heating clean air, a hot air jet nozzle facing the portion to be heated, a temperature sensor for measuring the temperature of the hot air, and a controller for controlling the temperature of the hot air,
When the controller sets the temperature of hot air to 405 ° C. to 365 ° C. during filling / packaging of the packaging filling machine and maintains the state ready for filling / packaging of the packaging filling machine, the temperature of hot air is set to 210 ° C. A heating apparatus characterized by being set to ˜190 ° C.
前記熱可塑性樹脂の低密度ポリエチレンが、低密度ポリエチレン(LDPE)、中密度ポリエチレン(MDPE)、高密度ポリエチレン(HDPE)、線状低密度ポリエチレン(LLDPE)、メタロセン触媒を用いて製造した線状低密度ポリエチレン(mLLDPE)、又は、これらのブレンドである、請求項1の加熱装置。 The low-density polyethylene of the thermoplastic resin is a low-density polyethylene (LDPE), a medium-density polyethylene (MDPE), a high-density polyethylene (HDPE), a linear low-density polyethylene (LLDPE), or a linear low produced using a metallocene catalyst. The heating device according to claim 1, which is a density polyethylene (mLLDPE) or a blend thereof. 前記熱風噴射ノズルが、容器面の加熱すべき部分から、熱風温度が実質的に低下しない位置に、該包装充填機の充填/包装時に、配置される、請求項1の加熱装置。 The heating apparatus according to claim 1, wherein the hot air injection nozzle is disposed at a position where the hot air temperature is not substantially lowered from a portion to be heated on the container surface during filling / packaging of the packaging filling machine.
JP2011275941A 2011-12-16 2011-12-16 Heating device for heat sealing Pending JP2013124136A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110654637A (en) * 2019-09-27 2020-01-07 张江亮 Intelligent production equipment based on automatic filling and tail sealing of hose

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Publication number Priority date Publication date Assignee Title
JPS5820603A (en) * 1981-07-20 1983-02-07 大日本印刷株式会社 Method of sealing top section of carton
JPH1179138A (en) * 1997-09-04 1999-03-23 Toshiba Tec Kk Automatic packaging apparatus
JP3068213U (en) * 1999-10-14 2000-04-28 みづほ工業株式会社 Cutting mechanism and tube filling machine using the cutting mechanism
JP2007168872A (en) * 2005-12-22 2007-07-05 Nihon Tetra Pak Kk Packaging container, and its manufacturing method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5820603A (en) * 1981-07-20 1983-02-07 大日本印刷株式会社 Method of sealing top section of carton
JPH1179138A (en) * 1997-09-04 1999-03-23 Toshiba Tec Kk Automatic packaging apparatus
JP3068213U (en) * 1999-10-14 2000-04-28 みづほ工業株式会社 Cutting mechanism and tube filling machine using the cutting mechanism
JP2007168872A (en) * 2005-12-22 2007-07-05 Nihon Tetra Pak Kk Packaging container, and its manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110654637A (en) * 2019-09-27 2020-01-07 张江亮 Intelligent production equipment based on automatic filling and tail sealing of hose

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