JP2013014355A - Device for regulating liquid level, and packing and filling apparatus - Google Patents
Device for regulating liquid level, and packing and filling apparatus Download PDFInfo
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本発明は、流動性食品などが充填された垂直状チューブ包装材料を容器毎に横シールして切断して容器とする包装充填装置において、チューブ内の液体食品の液面を所定レベルに調整する装置に関する。 The present invention adjusts the liquid level of liquid food in a tube to a predetermined level in a packaging and filling apparatus in which a vertical tube packaging material filled with fluid food or the like is horizontally sealed for each container and cut into containers. Relates to the device.
発酵乳飲料、牛乳、ミネラルウォーター、茶、ジュース、スープ、アルコール類等の流動食品を収容する包装容器を製造する場合、ウェブ状（帯状）の包装積層材料が使用され、包装積層材料がヒートシール、超音波シール等によってシールされることにより、包装容器が形成される。例えば、包装充填装置において、包装積層材料をチューブ状に成形し、縦シール装置によって長手方向（縦方向）にシールした後、チューブ状の包装積層材料の中に液体食品を充填しながら、横シール装置によって横方向にシールして切断し、枕状の予備成形容器を形成し、予備成形容器を更に最終形状に成形して包装容器を完成させる。 When manufacturing packaging containers that contain liquid foods such as fermented milk drinks, milk, mineral water, tea, juice, soup, alcohol, etc., web-like (band-like) packaging laminate materials are used, and the packaging laminate materials are heat-sealed. A packaging container is formed by sealing with an ultrasonic seal or the like. For example, in a packaging and filling device, a packaging laminate material is formed into a tube shape, sealed in the longitudinal direction (longitudinal direction) by a longitudinal sealing device, and then filled with liquid food in the tubular packaging laminate material and then laterally sealed. The apparatus is sealed and cut in the lateral direction to form a pillow-shaped preformed container, and the preformed container is further formed into a final shape to complete a packaging container.
図２は、包装充填装置の一例を示す概略斜視図である。ウェブ状の包装積層材料１は、リールの状態で包装充填装置に供給される。包装積層材料１は、紙基材、及び紙基材の両面にポリエチレン樹脂が積層された可撓性の積層体から成り、必要に応じて紙基材とフィルムとの間にアルミニウム箔、ガスバリヤ性樹脂等から成るバリヤ層が形成され、包装容器１４の表面に相当する部分にあらかじめ文字や模様などが印刷されている。 FIG. 2 is a schematic perspective view showing an example of a packaging and filling apparatus. The web-shaped packaging laminate material 1 is supplied to the packaging filling apparatus in a reel state. The packaging laminate material 1 is composed of a paper substrate and a flexible laminate in which polyethylene resin is laminated on both sides of the paper substrate, and an aluminum foil or gas barrier property between the paper substrate and the film as necessary. A barrier layer made of a resin or the like is formed, and characters and patterns are printed in advance on a portion corresponding to the surface of the packaging container 14.
繰り出された包装積層材料１は、搬送手段としての送り装置によって連続的に搬送され、ベンディングローラ、ダンパローラ等を経て、ストリップ付着装置３に送られ、ストリップ付着装置によって包装積層材料１の一方の縁部に沿ってストリップ２が付着される。 The fed packaging laminate material 1 is continuously conveyed by a feeding device as a conveying means, is sent to a strip adhering device 3 through a bending roller, a damper roller, and the like, and is fed to one edge of the packaging laminate material 1 by the strip adhering device. A strip 2 is attached along the part.
続いて、包装積層材料１は、必要に応じて、プルタブ付着装置によってプルタブが付着されてる。包装積層材料１は、殺菌槽４に送られ、殺菌槽４において過酸化水素等の殺菌液によって殺菌される。包装積層材料１は、エアナイフ５に送られ、エアナイフ５によって乾燥させられた後、無菌室４０の室内に送られる。包装積層材料１は、成形リング６、その他の成形リングによって徐々に変形させられてチューブ状の形状に形成される。
包装積層材料１は、縦シール装置の予熱手段８からのホットエアーによって予熱されて、縦方向にシールされ、充填パイプ７を介して供給された流動性食品がチューブ状包装積層材料１内に充填される。
Subsequently, the pulling tab is attached to the packaging laminated material 1 by a pull tab attaching device as necessary. The packaging laminated material 1 is sent to the sterilization tank 4 and sterilized with a sterilization liquid such as hydrogen peroxide in the sterilization tank 4. The packaging laminate material 1 is sent to the air knife 5, dried by the air knife 5, and then sent into the aseptic room 40. The packaging laminate material 1 is gradually deformed by the molding ring 6 and other molding rings to form a tube shape.
The packaging laminate material 1 is preheated by hot air from the preheating means 8 of the longitudinal seal device, sealed in the longitudinal direction, and filled with the fluid food supplied through the filling pipe 7 into the tubular packaging laminate material 1. Is done.
チューブ内の充填液の液面を所定レベルに調整する装置に関して、図３に示すように、包装材料チューブ１内部に挿入された充填パイプ７の下端内部に設けられた弁と、弁より上方の充填パイプ７の外周面に上下方向に移動自在に嵌められている円筒状のフロートと、弁の揺動端とフロートとを連結している連結部材とを備えており、フロートの上下動にともなって弁を開閉することにより、充填液の液面を調整する装置例がある。（特許文献１参照）
図３の装置例では、チューブの内側に配されるフロート１２にマグネットを取付け、これをチューブの外部から磁気検知器３１で検出し、磁気検知器の出力信号に基づいて制御される流量制御弁３２によって充填パイプ７に供給される充填液の流量を調整して液面レベル３６を適正な位置に制御する装置３３である。（特許文献１参照）
As for the apparatus for adjusting the liquid level of the filling liquid in the tube to a predetermined level, as shown in FIG. 3, a valve provided inside the lower end of the filling pipe 7 inserted into the packaging material tube 1, and a position above the valve. A cylindrical float fitted to the outer peripheral surface of the filling pipe 7 so as to be movable in the vertical direction, and a connecting member for connecting the oscillating end of the valve and the float are provided. There is an example of an apparatus for adjusting the liquid level of the filling liquid by opening and closing the valve. (See Patent Document 1)
In the apparatus example of FIG. 3, a magnet is attached to the float 12 arranged inside the tube, this is detected by the magnetic detector 31 from the outside of the tube, and is controlled based on the output signal of the magnetic detector. 32 is a device 33 that adjusts the flow rate of the filling liquid supplied to the filling pipe 7 by 32 to control the liquid level 36 to an appropriate position. (See Patent Document 1)
チューブ状包装積層材料１は、図２に示すように、ローラによって案内され、横シール装置１０に送られ、挟まれて横方向にシールされ、横シールされた包装積層材料は、ナイフなどで切断されて枕状の予備成形容器１３が形成される。そして、予備成形容器１３は、最終成形搬送装置１５によって搬送されて最終の形状に成形され、流動性食品を収容する包装容器１４が完成する As shown in FIG. 2, the tubular packaging laminate material 1 is guided by a roller, sent to a lateral sealing device 10, sandwiched and sealed in the lateral direction, and the laterally sealed packaging laminated material is cut with a knife or the like. Thus, a pillow-shaped preformed container 13 is formed. And the preforming container 13 is conveyed by the final shaping | molding conveyance apparatus 15, is shape | molded by the last shape, and the packaging container 14 which accommodates a fluid food is completed.
図４は、包装充填装置の別の例を示す概略斜視図である。
ウェブ状の包装積層材料１は、リールの状態で包装充填装置に供給される（図示せず）。包装積層材料１は、紙基材、及び紙基材の両面にポリエチレン樹脂が積層された可撓性の積層体から成り、必要に応じて紙基材とフィルムとの間にアルミニウム箔層が形成され、包装容器１４の表面に相当する部分にあらかじめ文字や模様などが印刷されている。
FIG. 4 is a schematic perspective view showing another example of the packaging and filling apparatus.
The web-shaped packaging laminate material 1 is supplied to a packaging and filling device in a reel state (not shown). The packaging laminate material 1 is composed of a paper substrate and a flexible laminate in which polyethylene resin is laminated on both sides of the paper substrate, and an aluminum foil layer is formed between the paper substrate and the film as necessary. A character, a pattern, or the like is printed in advance on a portion corresponding to the surface of the packaging container 14.
繰り出された包装積層材料１は、連続的に搬送され、包装積層材料１は、図４に示されるように、垂直に立ち上がりながら、二つ折りにされる。
二つ折りの帯状包装材料１は、緩やかなカーブを描きながら、上端に達して、同様に緩やかなカーブを描いて下方に向かい、充填、縦シール、横シール工程の上端に達する。
上記の充填、縦シール、横シールの上端から、垂直に、二つ折りの帯状包装材料１は下方に搬送される。
上部で、二つ折りの帯状包装材料１（扁平チューブ状包装積層材料）の一端の開放部分から、充填パイプ７を介して、液状ヨーグルト、牛乳、ミネラルウォーター、茶、ジュース、スープ、アルコール類等の流動食品が二つ折りの帯状包装材料１の内部に流し込まれる。
包装積層材料１は、更に、縦シール装置８によって縦方向にシールされる。
The drawn packaging laminate material 1 is continuously conveyed, and the packaging laminate material 1 is folded in two while rising vertically as shown in FIG.
The half-folded strip-shaped wrapping material 1 reaches the upper end while drawing a gentle curve, and similarly draws a gentle curve and goes downward, reaching the upper end of the filling, vertical sealing, and horizontal sealing steps.
From the upper ends of the above-mentioned filling, vertical seal and horizontal seal, the half-folded strip-shaped packaging material 1 is conveyed downward.
From the open part of one end of the folded band-shaped packaging material 1 (flat tube-shaped packaging laminate material) at the top, through the filling pipe 7, liquid yogurt, milk, mineral water, tea, juice, soup, alcohol, etc. The liquid food is poured into the folded band-shaped packaging material 1.
The packaging laminate material 1 is further sealed in the vertical direction by the vertical sealing device 8.
チューブ内の充填液の液面を所定レベルに調整する装置は、充填パイプ７の吐出口（図４に図示せず）、パイプの途中またはパイプの上流に、設けられた流量調節弁と、充填液の液面を検知するセンサと、センサからの入力信号を受信して所定の出力を送信する制御手段とからなる。
例えば、チューブの内側に配されるフロートにマグネットを取付け、これをチューブの外部から磁気検知器で検出し、磁気検知器の出力信号に基づいて制御される流量制御弁によって充填パイプに供給される充填液の流量を調整して液面レベルを適正な位置に制御する。
The apparatus for adjusting the liquid level of the filling liquid in the tube to a predetermined level includes a discharge port (not shown in FIG. 4) of the filling pipe 7, a flow control valve provided in the middle of the pipe or upstream of the pipe, and filling It comprises a sensor for detecting the liquid level of the liquid and a control means for receiving an input signal from the sensor and transmitting a predetermined output.
For example, a magnet is attached to the float arranged inside the tube, this is detected by a magnetic detector from the outside of the tube, and supplied to the filling pipe by a flow control valve controlled based on the output signal of the magnetic detector Adjust the flow rate of the filling liquid to control the liquid level to an appropriate position.
図４の部分断面図Ａに示す扁平チューブ状包装積層材料１は、ローラ等によって案内され、横シール装置１０に送られ、挟まれて横方向にシールされ、横シールされた包装積層材料は、ナイフなどで切断されて予備成形容器１３が形成される。そして、予備成形容器１３は、最終の形状に成形され、流動性食品を収容する包装容器１４が完成する。 The flat tube-shaped packaging laminate material 1 shown in the partial sectional view A of FIG. 4 is guided by a roller or the like, sent to a lateral sealing device 10, sandwiched and sealed laterally, and the laterally sealed packaging laminated material is: The preformed container 13 is formed by cutting with a knife or the like. And the preforming container 13 is shape | molded by the final shape, and the packaging container 14 which accommodates a fluid food is completed.
上述の液面レベル調整において、液面レベルを検知しても、流量調節弁が適切に流量を調節できない（弁開閉度の調節が十分でない）不応答性がある。これは、液面レベルが下がり又は上がり、充填液が不足しもしくは過剰になり、その不足・過剰を是正するために、流量調節弁が開閉する。しかし、応答性が悪いために、開閉して直ちに上記の不足・過剰が是正されない不都合がある。
この様な不都合は、流量調節弁から充填パイプ７の吐出口までのパイプの距離が長い場合、包装充填装置の運転開始時、運転の一時停止後の再開時、充填する流動・液体性食品が粘性であったり、固形粒や繊維、粉砕果実や野菜などを固形分を含む飲料であるとき、また、ホイップなど微細気泡を含む乳飲料であるときに、更に、図４に示すような包装充填装置のチューブ状包装材料の横断面形状が扁平である充填システムであるときに、特に応答性が悪い。
従来の液面レベル調整では、応答性が悪い場合に、経験則から、操作員が流量調節弁の流量を手動で調整してる。
In the liquid level adjustment described above, even if the liquid level is detected, the flow rate control valve cannot adjust the flow rate appropriately (the valve opening / closing degree is not sufficiently adjusted). This is because the liquid level is lowered or raised, the filling liquid becomes insufficient or excessive, and the flow rate control valve opens and closes to correct the shortage or excess. However, since the responsiveness is poor, there is an inconvenience that the shortage and excess are not corrected immediately after opening and closing.
Such inconvenience is that when the distance of the pipe from the flow control valve to the discharge port of the filling pipe 7 is long, when the operation of the packaging and filling device is started, when the operation is resumed after the suspension of operation, the liquid / liquid food to be filled is When it is a beverage that is viscous or contains solid matter such as solid grains and fibers, pulverized fruits and vegetables, or when it is a milk beverage that contains fine bubbles such as whipped, it is further packed as shown in FIG. Responsiveness is particularly poor when the filling system has a flat cross-sectional shape of the tubular packaging material of the device.
In the conventional liquid level adjustment, when the responsiveness is poor, the operator manually adjusts the flow rate of the flow rate control valve based on empirical rules.
本発明は、上述の不都合を解消して、液面レベルを検知した後、直ちに流量調節弁を適切に開閉し適切な流量を調節することができ、弁開閉度を十分に調節できる液面レベル調整装置及びその包装充填装置を提供することを目的とする。 The present invention eliminates the inconveniences described above, and immediately after detecting the liquid level, the flow rate control valve can be appropriately opened and closed to adjust the appropriate flow rate and the level of the valve can be adjusted sufficiently. It is an object of the present invention to provide an adjusting device and its packaging and filling device.
本発明の液面レベル調整装置は、ウェブ状包装材料をチューブ状に成形し、包装材料の両端部でチューブの縦線方向に縦シールし、チューブ状包装材料内に充填パイプから液体食品を充填する包装充填装置において、チューブの内部に液体食品が所定液面レベルに充填されるように液面レベルを調整する装置であって、
液面レベルを検知してレベル信号を出力するセンサと、レベル信号を受信し、状況係数及び環境数式に基づいて、流量調節信号を出力する制御手段と、流量調節信号を受信し、流量調節弁を開閉し充填パイプの流量を調節する流量調節手段と、状況係数及び環境数式を判定し、判定信号を制御手段に出力する判定手段とを備える、ことを特徴とする。
The liquid level adjustment device of the present invention forms a web-like packaging material into a tube shape, vertically seals the tube in the vertical direction of the tube at both ends of the packaging material, and fills the tubular packaging material with liquid food from a filling pipe In the packaging and filling apparatus, the liquid level is adjusted so that the liquid food is filled into the tube at a predetermined liquid level,
A sensor that detects a liquid level and outputs a level signal; a control unit that receives the level signal and outputs a flow rate adjustment signal based on a situation coefficient and an environmental formula; and a flow rate adjustment valve that receives the flow rate adjustment signal And a flow rate adjusting means for adjusting the flow rate of the filling pipe, and a determination means for determining a situation coefficient and an environmental formula and outputting a determination signal to the control means.
この発明の好ましい態様において、判定手段が、例えば、品種、粘稠度、固形含量、比重、温度、気泡度などの被充填液体のパラメータに、並びに、例えば、包装充填装置の運転開始時、運転のショートストップやロングストップ等の一時停止後の再開時などの種々の運転状況に、応じた状況係数及び環境数式を判定する。 In a preferred embodiment of the present invention, the determination means includes, for example, parameters of the liquid to be filled such as varieties, consistency, solid content, specific gravity, temperature, bubble content, and, for example, at the start of operation of the packaging and filling apparatus. Situation factors and environmental formulas are determined according to various driving situations such as when restarting after a temporary stop such as short stop or long stop.
この発明の好ましい態様において、チューブ状包装材料の横断面形状が扁平である。 In a preferred embodiment of the present invention, the cross-sectional shape of the tubular packaging material is flat.
この発明の好ましい態様において、判定手段が判定する環境数式が、下記（１）に示される：
ｙ＝ａｘ＋ｂ ‥‥ （１）
（式中、ｙは流量調節信号の強度、ａは状況係数、ｘはレベル信号の強度、ｂは調整定数である）
In a preferred embodiment of the present invention, the environmental formula determined by the determining means is shown in the following (1):
y = ax + b (1)
(Where y is the intensity of the flow control signal, a is the condition factor, x is the intensity of the level signal, and b is the adjustment constant)
本発明の包装充填装置は、ウェブ状包装材料をチューブ状に成形し、包装材料の両端部でチューブの縦線方向に縦シールし、チューブ状包装材料内に充填パイプから液体食品を充填する包装充填装置において、チューブの内部に液体食品が所定液面レベルに充填されるように液面レベルを調整する装置を有する包装充填装置であって、
液面レベルを調整する装置が、液面レベルを検知してレベル信号を出力するセンサと、レベル信号を受信し、状況係数及び環境数式に基づいて、流量調節信号を出力する制御手段と、流量調節信号を受信し、流量調節弁を開閉し充填パイプの流量を調節する流量調節手段と、状況係数及び環境数式を判定し、判定信号を制御手段に出力する判定手段とを備える、ことを特徴とする。
The packaging and filling apparatus of the present invention is a packaging in which a web-shaped packaging material is formed into a tube shape, vertically sealed in the longitudinal direction of the tube at both ends of the packaging material, and liquid food is filled into the tubular packaging material from a filling pipe. In the filling device, a packaging filling device having a device for adjusting the liquid level so that the liquid food is filled into the tube at a predetermined liquid level,
A device for adjusting the liquid level, a sensor that detects the liquid level and outputs a level signal, a control unit that receives the level signal and outputs a flow rate adjustment signal based on the situation coefficient and the environmental formula, and a flow rate And a flow rate adjusting means for receiving the adjustment signal, opening and closing the flow rate control valve to adjust the flow rate of the filling pipe, and a determination means for determining the situation coefficient and the environmental formula and outputting the determination signal to the control means. And
この発明の好ましい態様において、判定手段が、例えば、品種、粘稠度、固形含量、比重、温度、気泡度などの被充填液体のパラメータに応じた状況係数及び環境数式のデータベスを備え、並びに、例えば、包装充填装置の運転開始時、運転のショートストップやロングストップ等の一時停止後の再開時などの種々の運転状況に応じた状況係数及び環境数式のデータベスを備え、上記データベースに照会し最適な状況係数及び環境数式を選択、判定する。 In a preferred embodiment of the present invention, the determination means comprises a database of situation factors and environmental formulas according to the parameters of the liquid to be filled such as, for example, variety, consistency, solid content, specific gravity, temperature, bubble content, and the like, and For example, it is equipped with a database of environmental factors and environmental formulas according to various operating conditions such as when starting the operation of the packaging filling device, when restarting after a temporary stop such as a short stop or long stop, etc. Select and determine the appropriate situation factor and environmental formula.
この発明の更に好ましい態様において、判定手段が、状況係数及び環境数式のデータベスを絶えず若しくは適宜、更新する。 In a further preferred aspect of the present invention, the determination means constantly or appropriately updates the situation coefficient and the environmental formula database.
この発明による液面レベル調整装置及びその包装充填装置は、ウェブ状包装材料をチューブ状に成形し、包装材料の両端部でチューブの縦線方向に縦シールし、チューブ状包装材料内に充填パイプから液体食品を充填する包装充填装置において、チューブの内部に液体食品が所定レベルに充填されるように液面レベルを調整する。
この装置において、帯状包装積層材料が連続的に装置に供給され、連続的にチューブの内部に液体食品が所定レベルに充填されるように液面レベルが調整され、内容物が充填され成形された容器が製造される。
The liquid level adjusting device and the packaging and filling device according to the present invention form a web-shaped packaging material into a tube shape, vertically seal the longitudinal direction of the tube at both ends of the packaging material, and fill the pipe into the tubular packaging material. In the packaging and filling apparatus for filling the liquid food, the liquid level is adjusted so that the liquid food is filled to a predetermined level inside the tube.
In this apparatus, the belt-like packaging laminate material is continuously supplied to the apparatus, the liquid level is adjusted so that the liquid food is continuously filled in the tube at a predetermined level, the contents are filled and molded. A container is manufactured.
この発明による液面レベル調整装置は、液面レベルを検知してレベル信号を出力するセンサと、レベル信号を受信し、状況係数及び環境数式に基づいて、流量調節信号を出力する制御手段と、流量調節信号を受信し、流量調節弁を開閉し充填パイプの流量を調節する流量調節手段と、状況係数及び環境数式を判定し、判定信号を制御手段に出力する判定手段とを備える。
センサが、チューブの内部に充填された液体食品の上端の液面の高さ位置（レベル）を検知しそのレベルを計測する。更に、センサは計測されたレベルの電子データをレベル信号として送信（出力）する。
判定手段は、状況係数及び環境数式を判定し、判定信号を制御手段に前もって出力する。
状況係数及び環境数式は、包装充填装置の運転状況と、液体食品を包装充填する包装材料の条件と、装置において包装材料で包装充填される液体食品の種々のパラメータとによって、適切に選定され、判定され、決定される。
制御手段は、センサからのレベル信号を受信し、状況係数及び環境数式に基づいて、流量調節手段に流量調節信号を出力する。
状況係数及び環境数式に基づいて信号が出力されるので、適切な液面レベルの制御を可能にする。
The liquid level adjustment apparatus according to the present invention includes a sensor that detects a liquid level and outputs a level signal, a control unit that receives the level signal and outputs a flow rate adjustment signal based on a situation coefficient and an environmental formula, Flow rate adjusting means for receiving a flow rate adjusting signal, opening and closing a flow rate adjusting valve to adjust the flow rate of the filling pipe, and determining means for determining a situation coefficient and an environmental expression and outputting the determination signal to the control means.
A sensor detects the height position (level) of the liquid level of the upper end of the liquid food with which the inside of the tube was filled, and measures the level. Further, the sensor transmits (outputs) the electronic data of the measured level as a level signal.
The determination means determines the situation coefficient and the environmental formula and outputs a determination signal to the control means in advance.
The situation coefficient and the environmental formula are appropriately selected according to the operation status of the packaging and filling apparatus, the conditions of the packaging material for packaging and filling the liquid food, and various parameters of the liquid food to be packaged and filled with the packaging material in the apparatus, Determined and determined.
The control means receives the level signal from the sensor and outputs a flow rate adjustment signal to the flow rate adjustment means based on the situation coefficient and the environmental formula.
Since a signal is output based on the situation coefficient and the environment formula, it is possible to control the liquid level appropriately.
この発明の好ましい態様において、判定手段が、例えば、品種、粘稠度、固形含量、比重、温度、気泡度などの被充填液体のパラメータに、並びに、例えば、包装充填装置の運転開始時、運転のショートストップやロングストップ等の一時停止後の再開時などの種々の運転状況に、応じた状況係数及び環境数式を判定する。
例えば、比較的にドロドロした液状ヨーグルトなど品種では、液面レベルが低下して流量調節弁を広く開けてもその特性から容易にパイプ内を移送することができず迅速に液面レベルを上げることができないが、そのような場合、流量調節弁を更に開放して移送圧力を高め迅速に液面レベルを高めることを可能にする。また、粘稠度の高い果汁の場合も同様に、液面レベルが低下すると流量調節弁を標準よりも開放して移送圧力を高め迅速に液面レベルを高めることを可能にする。固形含量が無く浸透性が高いアルコール飲料では液面レベルが低下しても流量調節弁を開放すれば容易に迅速に液面レベルを高めることができるので流量調節弁を標準よりも狭めて開放すればよい。温度が高い場合も流動性が一般的に高まるので同様に流量調節弁を標準よりも狭めて開放する。逆に、気泡度が高いホイップクリームでは、液面レベルが低下すると流量調節弁を標準よりも開放して移送圧力を高め迅速に液面レベルを高めることを可能にする。
In a preferred embodiment of the present invention, the determination means includes, for example, parameters of the liquid to be filled such as varieties, consistency, solid content, specific gravity, temperature, bubble content, and, for example, at the start of operation of the packaging and filling apparatus. Situation factors and environmental formulas are determined according to various driving situations such as when restarting after a temporary stop such as short stop or long stop.
For example, in varieties such as liquid yogurt, which is relatively muddy, the liquid level is lowered, and even if the flow control valve is opened widely, it cannot be easily transferred through the pipe due to its characteristics, and the liquid level is raised rapidly. In such a case, however, the flow control valve can be further opened to increase the transfer pressure and to quickly increase the liquid level. Similarly, in the case of fruit juice having a high consistency, when the liquid level is lowered, the flow control valve is opened more than the standard to increase the transfer pressure and to quickly increase the liquid level. In alcoholic beverages with no solid content and high permeability, even if the liquid level drops, the liquid level can be easily increased quickly if the flow control valve is opened. That's fine. When the temperature is high, the fluidity generally increases, so that the flow rate control valve is similarly narrowed and opened. On the other hand, in the case of whipped cream having a high bubble level, when the liquid level is lowered, the flow control valve is opened more than the standard to increase the transfer pressure and to quickly increase the liquid level.
充填される液体食品の種々のパラメータについて上記に例示したが、包装充填装置の種々の運転状況についても同様にである。
例えば、包装充填装置の運転開始時には、一般的に、充填パイプ内に空洞や気泡が残存し、また、温度が低いために、容易にパイプ内を移送することができず迅速に液面レベルを上げることができないが、そのような場合、流量調節弁を更に開放して移送圧力を高め迅速に液面レベルを高めることを可能にする。
逆に、運転のショートストップ等の一時停止後の再開時では、一般的に、充填パイプ内に空洞や気泡が無く、装置全体が暖められ温度が高いことから、容易にパイプ内を移送することができ迅速に液面レベルを上げることができ、そのような場合、流量調節弁を標準よりも狭く開放しても比較的迅速に液面レベルを高めることができる。
The various parameters of the liquid food to be filled are exemplified above, but the same applies to various operating conditions of the packaging and filling apparatus.
For example, at the start of operation of the packaging and filling apparatus, generally, cavities and bubbles remain in the filling pipe, and since the temperature is low, the liquid level cannot be easily transferred through the pipe and the liquid level is quickly increased. In such a case, the flow control valve can be further opened to increase the transfer pressure and to quickly increase the liquid level.
On the other hand, when restarting after a temporary stop such as a short stop of operation, generally there are no cavities or bubbles in the filled pipe, the entire device is warmed and the temperature is high, so it can be easily transferred through the pipe In such a case, the liquid level can be increased relatively quickly even if the flow control valve is opened narrower than the standard.
この発明の好ましい態様において、チューブ状包装材料の横断面形状が扁平である。
図４に例示すように、チューブ状包装材料の横断面形状が扁平である場合、充填体積及び充填断面積に比較して、充填食品液体と包装材料の内面との接触面積が広くなる。従って、充填される液体食品の種々のパラメータや、包装充填装置の種々の運転状況が、図２、３に例示すように、チューブ状包装材料の横断面形状が実質的に円形である場合と比較して、大きく影響する。この発明による液面レベル調整装置及びその包装充填装置がこの発明の作用効果に関して大きく貢献することができる。
In a preferred embodiment of the present invention, the cross-sectional shape of the tubular packaging material is flat.
As illustrated in FIG. 4, when the cross-sectional shape of the tubular packaging material is flat, the contact area between the filled food liquid and the inner surface of the packaging material is wider than the filling volume and the filling cross-sectional area. Therefore, the various parameters of the liquid food to be filled and the various operating conditions of the packaging and filling apparatus include a case where the cross-sectional shape of the tubular packaging material is substantially circular as shown in FIGS. In comparison, it has a significant effect. The liquid level adjusting device and the packaging and filling device according to the present invention can greatly contribute to the effects of the present invention.
この発明の好ましい態様において、判定手段が判定する環境数式が、下記一次式（１）に示される：
ｙ＝ａｘ＋ｂ ‥‥ （１）
（式中、ｙは流量調節信号の強度、ａは状況係数、ｘはレベル信号の強度、ｂは調整定数である）
一次式にすることによって、状況係数の最適化を容易にすることができる。
高次なシミュレーションを利用して、高次式を用い、より精度の高い最適化を図ることもできる。
In a preferred embodiment of the present invention, the environmental formula determined by the determining means is represented by the following linear formula (1):
y = ax + b (1)
(Where y is the intensity of the flow control signal, a is the condition factor, x is the intensity of the level signal, and b is the adjustment constant)
By making the linear expression, optimization of the situation coefficient can be facilitated.
Higher-order simulation can be used to achieve higher-precision optimization using higher-order equations.
この発明の好ましい態様において、判定手段が、例えば、品種、粘稠度、固形含量、比重、温度、気泡度などの被充填液体のパラメータに応じた状況係数及び環境数式のデータベースを備え、並びに、例えば、包装充填装置の運転開始時、運転のショートストップやロングストップ等の一時停止後の再開時などの種々の運転状況に応じた状況係数及び環境数式のデータベスを備え、上記データベースに照会し最適な状況係数及び環境数式を選択、判定する。
上記のデータベースは、概ね、運転操作の経験／ノウハウから得られることが多い。経験のある操作員、オペレータなどが不在でも、新人、不慣れな操作員であっても、適切な運転操作が可能になる。
In a preferred embodiment of the present invention, the determination means comprises a database of situation factors and environmental formulas according to the parameters of the liquid to be filled, such as, for example, variety, consistency, solid content, specific gravity, temperature, bubble content, and the like, and For example, it is equipped with a database of environmental factors and environmental formulas according to various operating conditions such as when starting the operation of the packaging filling device, when restarting after a temporary stop such as a short stop or long stop, etc. Select and determine the appropriate situation factor and environmental formula.
The above database is generally obtained from experience / know-how of driving operation. Even if there is no experienced operator or operator, a new operator or an unfamiliar operator can perform an appropriate driving operation.
上記態様において、判定手段が、状況係数及び環境数式のデータベスを絶えず若しくは適宜、更新する。
この更新によって、自動化されて優れた運転操作が可能になる。
In the above aspect, the determination unit constantly or appropriately updates the situation coefficient and the environment formula database.
This update enables automation and excellent driving operations.
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。
図２は、包装充填装置の一例を示す概略斜視図である。ウェブ状の包装積層材料１は、連続的に搬送され、ストリップ付着装置３に送られ、ストリップ付着装置によって包装積層材料１の一方の縁部に沿ってストリップ２が付着される。包装積層材料１は、殺菌槽４において過酸化水素等の殺菌液によって殺菌され、無菌室４０の室内に送られる。包装積層材料１は、成形リングによって徐々に変形させられてチューブ状の断面円形状に形成される。
包装積層材料１は、縦シール装置の予熱手段８によって予熱されて、縦方向にシールされ、充填パイプ７を介して供給された流動性食品がチューブ状包装積層材料１内に充填される。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 2 is a schematic perspective view showing an example of a packaging and filling apparatus. The web-like packaging laminate material 1 is continuously conveyed and sent to the strip applicator 3, and the strip 2 is attached along one edge of the packaging laminate material 1 by the strip applicator. The packaging laminated material 1 is sterilized with a sterilizing liquid such as hydrogen peroxide in the sterilization tank 4 and is sent into the aseptic room 40. The packaging laminate material 1 is gradually deformed by a forming ring and formed into a tube-like cross-sectional circle.
The packaging laminate material 1 is preheated by the preheating means 8 of the longitudinal seal device, sealed in the longitudinal direction, and the fluid food supplied through the filling pipe 7 is filled into the tubular packaging laminate material 1.
上述のように、この態様による液面レベル調整装置及びその包装充填装置は、チューブの内部に液体食品が所定レベルに充填されるように液面レベルを調整する。 As described above, the liquid level adjustment apparatus and the packaging and filling apparatus according to this aspect adjust the liquid level so that the liquid food is filled to a predetermined level inside the tube.
チューブ状包装積層材料１は、図２に示すように、横シール装置１０で横方向にシールされ、横シールされた包装積層材料は、切断されて枕状の予備成形容器１３が形成される。予備成形容器１３は、最終成形搬送装置１５によって搬送されて最終の形状に成形され、流動性食品を収容する包装容器１４が完成する As shown in FIG. 2, the tube-shaped packaging laminate material 1 is laterally sealed by a lateral sealing device 10, and the transversely sealed packaging laminate material is cut to form a pillow-shaped preform 13. The preformed container 13 is conveyed by a final molding and conveying device 15 and formed into a final shape, and a packaging container 14 for containing fluid food is completed.
図４は、包装充填装置の別の例を示す概略斜視図である。
包装積層材料１は、連続的に搬送され、図４に示されるように、垂直に立ち上がりながら、二つ折りにされる。
二つ折りの帯状包装材料１は、緩やかなカーブを描きながら、上端に達して、同様に緩やかなカーブを描いて下方に向かい、充填工程の上端に達する。二つ折りの帯状包装材料１は垂直に下方に搬送される。
まず、上部で、二つ折りの帯状包装材料１（扁平チューブ状包装積層材料）の一端の開放部分から、充填パイプ７を介して、流動食品が二つ折りの帯状包装材料１の内部に流し込まれる。
包装積層材料１は、縦シール装置８によって縦方向にシールされ、充填パイプ７を介して流動性食品が二つ折りチューブ１内に充填される。
FIG. 4 is a schematic perspective view showing another example of the packaging and filling apparatus.
The packaging laminate material 1 is continuously conveyed and folded into two while standing vertically as shown in FIG.
The half-folded strip-shaped packaging material 1 reaches the upper end while drawing a gentle curve, and similarly draws a gentle curve and goes downward to reach the upper end of the filling step. The half-folded strip-shaped packaging material 1 is conveyed vertically downward.
First, in the upper part, the fluid food is poured into the inside of the half-folded strip-shaped packaging material 1 through the filling pipe 7 from an open portion at one end of the half-folded strip-shaped packaging material 1 (flat tube-shaped packaging laminated material).
The packaging laminate material 1 is sealed in the vertical direction by the vertical sealing device 8, and the fluid food is filled into the folded tube 1 through the filling pipe 7.
図４に示す態様による液面レベル調整装置は、液面レベルを検知してレベル信号を出力するセンサ４１と、レベル信号を受信し、状況係数及び環境数式に基づいて、流量調節信号を出力する制御手段４２と、流量調節信号を受信し、タンク４５の下流の流量調節弁を開閉し充填パイプの流量を調節する流量調節手段４３と、状況係数及び環境数式を判定し、判定信号を制御手段に出力する判定手段４４とを備える。
センサ４１が、チューブの内部に充填された液体食品の上端の液面（図示せず）の高さ位置（レベル）を検知しそのレベルを計測する。更に、センサ４１は計測されたレベルの電子データをレベル信号として送信する。
The liquid level adjustment device according to the embodiment shown in FIG. 4 receives the level signal by detecting the liquid level and outputs a level signal, and outputs the flow rate adjustment signal based on the situation coefficient and the environmental formula. The control means 42 receives the flow adjustment signal, opens and closes the flow adjustment valve downstream of the tank 45 and adjusts the flow rate of the filling pipe, determines the situation coefficient and the environmental formula, and controls the determination signal And a determination means 44 for outputting the data.
The sensor 41 detects the height position (level) of the liquid level (not shown) at the upper end of the liquid food filled in the tube and measures the level. Furthermore, the sensor 41 transmits electronic data of the measured level as a level signal.
判定手段４４は、状況係数及び環境数式を判定し、判定信号を制御手段４２に前もって出力する。
状況係数及び環境数式は、包装充填装置の運転状況と、液体食品を包装充填する包装材料の条件と、装置において包装材料で包装充填される液体食品の種々のパラメータとによって、適切に選定され、判定され、決定される。
制御手段は、センサからのレベル信号を受信し、状況係数及び環境数式に基づいて、流量調節手段に流量調節信号を出力する。
状況係数及び環境数式に基づいて信号が出力されるので、適切な液面レベルの制御を可能にする。
The determination unit 44 determines the situation coefficient and the environmental formula, and outputs a determination signal to the control unit 42 in advance.
The situation coefficient and the environmental formula are appropriately selected according to the operation status of the packaging and filling apparatus, the conditions of the packaging material for packaging and filling the liquid food, and various parameters of the liquid food to be packaged and filled with the packaging material in the apparatus, Determined and determined.
The control means receives the level signal from the sensor and outputs a flow rate adjustment signal to the flow rate adjustment means based on the situation coefficient and the environmental formula.
Since a signal is output based on the situation coefficient and the environment formula, it is possible to control the liquid level appropriately.
この態様において、判定手段４４が、充填される液体の品種、粘稠度、固形含量、比重、温度、気泡度などの被充填液体のパラメータに、並びに、包装充填装置の運転開始時、運転のショートストップやロングストップ等の一時停止後の再開時などの種々の運転状況に、応じた状況係数及び環境数式を判定する。
液状ヨーグルトなどの発酵乳の品種では、液面レベルが低下して流量調節弁を広く開けてもその特性から容易にパイプ内を移送することができず迅速に液面レベルを上げることができない。この態様では、流量調節弁を更に広く開放して移送圧力を高め迅速に液面レベルを高める。粘稠度の高い濃厚な果汁の場合も同様に、液面レベルが低下すると流量調節弁を標準よりも開放して移送圧力を高め迅速に液面レベルを高める。固形含量が無く浸透性が高いアルコール飲料では液面レベルが低下しても流量調節弁を開放すれば容易に迅速に液面レベルが上昇する。従って、流量調節弁を標準よりも狭めて開放する。温度が高い場合は、流動性が一般的に高まり、流量調節弁を標準よりも狭めて開放する。気泡度が高いホイップでは、液面レベルが低下すると流量調節弁を標準よりも開放して移送圧力を高め迅速に液面レベルを高める。
In this embodiment, the determination means 44 determines the parameters of the liquid to be filled such as the kind of liquid to be filled, the consistency, the solid content, the specific gravity, the temperature, the bubble degree, and the operation of the packaging filling apparatus at the start of operation. Situation factors and environmental formulas are determined according to various driving situations such as when restarting after a temporary stop such as a short stop or a long stop.
In fermented milk varieties such as liquid yogurt, even if the liquid level is lowered and the flow control valve is opened widely, it cannot be easily transferred through the pipe due to its characteristics, and the liquid level cannot be raised rapidly. In this aspect, the flow rate control valve is opened more widely to increase the transfer pressure and quickly increase the liquid level. Similarly, in the case of concentrated fruit juice with high consistency, when the liquid level is lowered, the flow rate control valve is opened more than the standard to increase the transfer pressure and quickly increase the liquid level. In an alcoholic beverage having a low solid content and high permeability, even if the liquid level decreases, the liquid level increases easily and quickly if the flow control valve is opened. Therefore, the flow control valve is opened narrower than the standard. When the temperature is high, the fluidity is generally increased and the flow control valve is opened narrower than the standard. In a whip having a high bubble level, when the liquid level falls, the flow control valve is opened more than the standard to increase the transfer pressure and quickly raise the liquid level.
包装充填装置の種々の運転状況については、包装充填装置の運転開始時には、充填パイプ内に空洞や気泡が残存し、また、温度が低く、容易にパイプ内を移送することができず迅速に液面レベルを上がらない。この態様では、流量調節弁を更に開放して移送圧力を高め迅速に液面レベルを上昇させる。
逆に、運転の一時停止後の再開時では、充填パイプ内に空洞や気泡が無く、装置全体が暖められ温度が高いことから、容易にパイプ内を移送することができ迅速に液面レベルを上げることができるので、この態様では、流量調節弁を標準よりも狭く開放しても比較的迅速に液面レベルを上げる。
Regarding the various operating conditions of the packaging and filling apparatus, at the start of the operation of the packaging and filling apparatus, cavities and bubbles remain in the filling pipe, and the temperature is low, and the liquid cannot be easily transferred through the pipe. Does not raise the surface level. In this embodiment, the flow rate control valve is further opened to increase the transfer pressure and quickly increase the liquid level.
Conversely, when resuming operation after a temporary stop, there are no cavities or bubbles in the filled pipe, and the entire device is warmed and the temperature is high. In this embodiment, the liquid level can be raised relatively quickly even if the flow rate adjusting valve is opened narrower than the standard.
図４に例示すように、チューブ状包装材料の横断面形状が扁平である態様では、充填体積及び充填断面積に比較して、充填食品液体と包装材料の内面との接触面積が広くなる。しかし、この態様による液面レベル調整によって、大きく改善される。 As illustrated in FIG. 4, in the aspect in which the cross-sectional shape of the tubular packaging material is flat, the contact area between the filled food liquid and the inner surface of the packaging material is wider than the filling volume and the filling cross-sectional area. However, it is greatly improved by the liquid level adjustment according to this aspect.
この態様において、判定手段が判定する環境数式が、図１の線図に示す下記一次式（１）に示される：
ｙ＝ａｘ＋ｂ ‥‥ （１）
（式中、ｙは流量調節信号の強度、ａは状況係数、ｘはレベル信号の強度、ｂは調整定数である）
図１の線図に示す状況係数及び環境数式の例示では、調整定数ｂが実質的にゼロであるが、Ｇ−１の状況及び環境では、状況係数ａが大きく、センサからの低いレベル信号であっても、高い流量調節信号を、すなわちより多くのより高い圧力の液体を流すように出力する。一方、Ｇ−２の状況及び環境では、状況係数ａが小さく、センサからの高いレベル信号であっても、低い流量調節信号を、すなわちより少なく、より低い圧力の液体を流すように出力する。このように、異なる状況係数ａを持つ。
一次式にすることによって、状況係数の最適化を容易にする。
In this embodiment, the environmental formula determined by the determining means is shown in the following linear formula (1) shown in the diagram of FIG.
y = ax + b (1)
(Where y is the intensity of the flow control signal, a is the condition factor, x is the intensity of the level signal, and b is the adjustment constant)
In the example of the situation coefficient and environment formula shown in the diagram of FIG. 1, the adjustment constant b is substantially zero. However, in the situation and environment of G-1, the situation coefficient a is large, and the low level signal from the sensor. If so, it outputs a high flow regulation signal, i.e., to flow more higher pressure liquid. On the other hand, in the situation and environment of G-2, the situation coefficient a is small, and even if it is a high level signal from the sensor, a low flow rate adjustment signal, that is, a smaller, lower pressure liquid is output. Thus, it has a different situation coefficient a.
By making a linear expression, optimization of the situation factor is facilitated.
この態様において、判定手段４４が、被充填液体のパラメータに応じた状況係数及び環境数式のデータベースを備え、並びに、包装充填装置の種々の運転状況に応じた状況係数及び環境数式のデータベスを備え、上記データベースに照会し最適な状況係数及び環境数式を選択、判定する。
上記のデータベースは、運転操作の経験／ノウハウから得られるので、経験のあるオペレータなどが不在でも、適切な運転操作となる。
更にこの態様において、判定手段４４が、状況係数及び環境数式のデータベスを絶えず若しくは適宜、更新する。この更新によって、より優れた運転操作が可能になる。
In this aspect, the determination unit 44 includes a database of situation factors and environmental formulas according to the parameters of the liquid to be filled, and a database of situation factors and environmental formulas according to various operating situations of the packaging and filling device, The database is queried to select and determine the optimal situation coefficient and environmental formula.
Since the above database is obtained from experience / know-how of driving operation, even if an experienced operator is absent, the driving operation is appropriate.
Further, in this aspect, the determination unit 44 constantly or appropriately updates the situation coefficient and the environment formula database. This update enables a better driving operation.
図４に示す扁平チューブ状包装積層材料１は、ローラ等によって案内され、横シール装置１０に送られ、挟まれて横方向にシールされ、横シールされた包装積層材料は、ナイフなどで切断されて予備成形容器１３が形成される。そして、予備成形容器１３は、最終成形搬送装置によって搬送されて最終の形状に成形され、流動性食品を収容する包装容器１４が完成する。 The flat tubular packaging laminate material 1 shown in FIG. 4 is guided by a roller or the like, sent to a lateral sealing device 10, sandwiched and sealed in the lateral direction, and the laterally sealed packaging laminated material is cut with a knife or the like. Thus, the preformed container 13 is formed. And the preforming container 13 is conveyed by the last shaping | molding conveyance apparatus, and is shape | molded by the final shape, and the packaging container 14 which accommodates a fluid food is completed.
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.
この発明の液面レベル調整装置によって、牛乳、ジュース、ミネラルウォーターなどの飲料、流動食品などの包装容器を製造することができる。 By the liquid level adjustment apparatus of the present invention, packaging containers for beverages such as milk, juice and mineral water, and liquid foods can be produced.
１ 包装積層材料
７ 充填パイプ
４１ センサ
４２ 制御手段
４３ 流量調節手段
４４ 判定手段
DESCRIPTION OF SYMBOLS 1 Packing laminated material 7 Filling pipe 41 Sensor 42 Control means 43 Flow rate adjustment means 44 Determination means
Claims (7)
該液面レベルを検知してレベル信号を出力するセンサと、該レベル信号を受信し、状況係数及び環境数式に基づいて、流量調節信号を出力する制御手段と、該流量調節信号を受信し、流量調節弁を開閉し該充填パイプの流量を調節する流量調節手段と、該状況係数及び該環境数式を判定し、判定信号を該制御手段に出力する判定手段とを備える、ことを特徴とする液面レベル調整装置。 In a packaging and filling apparatus in which a web-like packaging material is formed into a tube shape, vertically sealed in the longitudinal direction of the tube at both ends of the packaging material, and liquid food is filled into the tubular packaging material from a filling pipe, An apparatus for adjusting the liquid level so that the liquid food is filled into the tube at a predetermined liquid level,
A sensor for detecting the liquid level and outputting a level signal; receiving the level signal; and controlling means for outputting a flow rate adjustment signal based on a situation coefficient and an environmental formula; receiving the flow rate adjustment signal; A flow rate adjusting unit that opens and closes a flow rate adjusting valve to adjust the flow rate of the filling pipe; and a determination unit that determines the situation coefficient and the environmental formula and outputs a determination signal to the control unit. Liquid level adjustment device.
ｙ＝ａｘ＋ｂ ‥‥ （１）
（式中、ｙは該流量調節信号の強度、ａは該状況係数、ｘは該レベル信号の強度、ｂは調整定数である）
、請求項１記載の液面レベル調整装置。 The environmental formula determined by the determining means is shown in the following (1):
y = ax + b (1)
(Where y is the intensity of the flow control signal, a is the condition factor, x is the intensity of the level signal, and b is an adjustment constant)
The liquid level adjusting device according to claim 1.
該液面レベルを調整する装置が、該液面レベルを検知してレベル信号を出力するセンサと、該レベル信号を受信し、状況係数及び環境数式に基づいて、流量調節信号を出力する制御手段と、該流量調節信号を受信し、流量調節弁を開閉し該充填パイプの流量を調節する流量調節手段と、該状況係数及び該環境数式を判定し、判定信号を該制御手段に出力する判定手段とを備える、ことを特徴とする包装充填装置。 In a packaging and filling apparatus in which a web-like packaging material is formed into a tube shape, vertically sealed in the longitudinal direction of the tube at both ends of the packaging material, and liquid food is filled into the tubular packaging material from a filling pipe, A packaging and filling apparatus having a device for adjusting the liquid level so that the liquid food is filled to a predetermined liquid level in a tube,
A device for adjusting the liquid level, a sensor for detecting the liquid level and outputting a level signal, and a control means for receiving the level signal and outputting a flow rate adjustment signal based on the situation coefficient and the environmental formula A flow rate adjusting means for receiving the flow rate adjustment signal, opening and closing a flow rate adjustment valve to adjust the flow rate of the filling pipe, determining the status coefficient and the environmental formula, and determining to output a determination signal to the control means A packaging and filling apparatus comprising: means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011147793A JP2013014355A (en) | 2011-07-02 | 2011-07-02 | Device for regulating liquid level, and packing and filling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011147793A JP2013014355A (en) | 2011-07-02 | 2011-07-02 | Device for regulating liquid level, and packing and filling apparatus |
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| Publication Number | Publication Date |
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| JP2013014355A true JP2013014355A (en) | 2013-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011147793A Withdrawn JP2013014355A (en) | 2011-07-02 | 2011-07-02 | Device for regulating liquid level, and packing and filling apparatus |
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| Country | Link |
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| JP (1) | JP2013014355A (en) |
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2011
- 2011-07-02 JP JP2011147793A patent/JP2013014355A/en not_active Withdrawn
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