WO2012057041A1 - Measurement device and measurement method - Google Patents

Measurement device and measurement method Download PDF

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WO2012057041A1
WO2012057041A1 PCT/JP2011/074356 JP2011074356W WO2012057041A1 WO 2012057041 A1 WO2012057041 A1 WO 2012057041A1 JP 2011074356 W JP2011074356 W JP 2011074356W WO 2012057041 A1 WO2012057041 A1 WO 2012057041A1
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container
resin container
liquid
measuring
filled
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PCT/JP2011/074356
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French (fr)
Japanese (ja)
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俊也 小林
中嶋　大
西納　幸伸
正己 林
富久雄 西
山本　幸宏
▲たく▼也 大西
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サントリーホールディングス株式会社
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Priority to CN201180052133.8A priority Critical patent/CN103210315B/en
Publication of WO2012057041A1 publication Critical patent/WO2012057041A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/02—Food
    • G01N33/14—Beverages
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/226—Construction of measuring vessels; Electrodes therefor

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  • the present invention relates to measurement of the charge amount of a resin container, and more particularly to a measurement apparatus and a measurement method for measuring a potential difference between an inner surface and an outer surface of a resin container.
  • a resin container is charged.
  • a resin container transported by a container transport device is sterilized by irradiating an electron beam from an irradiation window of the electron beam irradiation device while passing the front side of the electron beam irradiation device.
  • a negative charge stays inside the wall of the resin container 2
  • a positive charge stays on the outer surface 2a and the inner surface 2b of the resin container 2.
  • the outer surface 2a side that has been directly irradiated with the electron beam has a higher potential than the inner surface 2b side (the potential on the outer surface 2a side is C1 and the potential on the inner surface 2b side). ), A potential difference V is generated between the outer surface 2a and the inner surface 2b.
  • the present invention is a measuring apparatus for measuring a potential difference between an inner surface and an outer surface of a resin container, wherein the resin container is filled with a liquid, the liquid is filled inside, and the resin container is disposed in the liquid.
  • a container, a first electrode connected to the liquid filled in the resin container, a second electrode connected to the liquid filled in the container, and the first electrode and the second electrode The circuit includes a communication circuit, and a voltage measurement unit that is connected to the circuit and measures a voltage flowing in the circuit.
  • the second invention is characterized in that, in the first invention, a resistor is arranged in parallel with the voltage measuring means.
  • the measurement method according to the third invention is a measurement method for measuring the potential difference between the inner surface and the outer surface of the resin container, and after bringing the inner surface and the outer surface of the resin container into contact with the conductive medium, respectively.
  • a circuit that connects the conductive medium in contact with the inner surface and the conductive medium in contact with the outer surface is formed, and the potential difference between the inner surface and the outer surface of the resin container is measured by measuring the voltage flowing in this circuit. It is characterized by doing.
  • the measuring device has an electric container that can be turned on and off by a switch by placing resin containers filled with liquid in a container filled with liquid, inserting electrodes into the liquid in both containers, and connecting both electrodes.
  • FIG. 1 is a schematic diagram showing a measuring apparatus for measuring a potential difference between the inner and outer surfaces of a resin container.
  • Example 1 FIG. 2 is a diagram showing a state at the time of measurement of the measuring apparatus shown in FIG.
  • FIG. 3 is a graph showing voltage waveforms measured by an oscilloscope as voltage measuring means.
  • FIG. 4 is a diagram showing an example of the electric charge accumulated in the wall of the resin container and the potential difference between the inner and outer surfaces when the resin container is sterilized by irradiation with an electron beam.
  • a container is installed in a state where the liquid is filled inside, and a resin container filled with a liquid such as a drink is placed in the liquid of the container.
  • the first electrode is inserted into the liquid filled in the resin container
  • the second electrode is inserted into the liquid in the container, and an electric circuit for connecting the first electrode and the second electrode is formed.
  • the switch can be turned on and off.
  • An oscilloscope is connected to this electric circuit to measure the voltage in the circuit.
  • the measuring apparatus is an apparatus for measuring the potential difference.
  • This measuring apparatus is made of a resin base 4, a metal container 8 placed on the base 4 and filled with a liquid 6, and filled with a liquid 10, and filled in the container 8.
  • the resin container 2 disposed in the liquid 6, the first electrode 12 inserted in the liquid 10 filled in the resin container 2, and the liquid 6 filled in the container 8.
  • the second electrode 14 inserted in the electric circuit 18, the electric circuit 18 communicating with the first electrode 12 and the second electrode 14 and having one end grounded 16, and the electric circuit 18 connected to the electric circuit 18
  • an oscilloscope 20 as voltage measuring means for measuring the internal voltage.
  • the electric circuit 18 is turned on / off by a switch 22. Furthermore, it has a resistor 24 connected in parallel with an oscilloscope 20 connected to the electric circuit 18.
  • FIG. 3 is a voltage waveform displayed on the oscilloscope 20, and the potential difference between the inner surface 2b side and the outer surface 2a side of the wall of the resin container 2 is measured. Further, as shown in FIG.
  • the reaction rate is slowed by interposing a resistor 24. ing. Further, since the resistor 24 is interposed, the amount of charge can be calculated by obtaining a current value from the resistance value and measuring how long the current value flows.
  • the container 8 is made of metal such as iron or stainless steel, but it is not limited to metal but may be made of resin.
  • the electrode (second electrode 14) may be connected to either the liquid 6 filled in the container or the container 8, but in the case of the resin container 8, The electrode 14 must be connected to the liquid inside. Any liquid may be used as the liquid 6 placed in the container 8 and the liquid 10 filled in the resin container 2 as long as the liquid has some conductivity. Further, the base 4 on which the container 8 is placed can be omitted.
  • the switch 22 that cuts off the communication of the electric circuit 22 is provided at the position shown in the figure.
  • a switch may be provided at the position indicated by the symbol A in FIG.
  • the liquids 6 and 10 such as water are used as the conductive medium.
  • a thin film of copper or aluminum can be used as the conductive medium other than such a liquid. Even if these thin films are affixed to the inner surface and the outer surface of the resin container 2, the potential difference can be measured in the same manner as in the previous embodiment.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Food Science & Technology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

In the present invention, the electrical potential difference between the inside surface and the outside surface of a resin vessel is measured. A metal vessel loaded on a resin stand is filled with a liquid, and a resin vessel that has been filled with a beverage therewithin is disposed in the liquid. A first electrode is inserted into the beverage of the resin vessel, a second electrode is inserted into the liquid of the container, a circuit that connects both electrodes is formed, and a switch is provided that connects/disconnects the circuit. Furthermore, an oscilloscope is connected to the circuit, and a resistor is connected in parallel to the oscilloscope.

Description

測定装置および測定方法Measuring apparatus and measuring method
　本発明は、樹脂製容器の帯電量の測定、特に、樹脂製容器の内面と外面の電位差を測定する測定装置および測定方法に関するものである。 The present invention relates to measurement of the charge amount of a resin container, and more particularly to a measurement apparatus and a measurement method for measuring a potential difference between an inner surface and an outer surface of a resin container.
　樹脂製容器が帯電することは従来から知られている。例えば、特許文献１のように、容器搬送装置によって搬送されている樹脂製容器を、電子線照射装置の前面側を通過させる間に、電子線照射装置の照射窓から電子線を照射して殺菌を行うと、図４に示すように、樹脂製容器２の壁体の内部には、マイナスの電荷が滞留し、樹脂製容器２の外側の表面２ａと内側の表面２ｂにはプラスの電荷を持つイオンが付着した状態になる。特に、この図４の状態では、電子線の照射を直接受けた外面２ａ側の方が内面２ｂ側よりも電位が高い状態になっており（外面２ａ側の電位をＣ１、内面２ｂ側の電位をＣ２で示す）、外面２ａと内面２ｂとの間に電位差Ｖが生じている。
特開２００８－１６２６５１号公報 It has been conventionally known that a resin container is charged. For example, as in Patent Document 1, a resin container transported by a container transport device is sterilized by irradiating an electron beam from an irradiation window of the electron beam irradiation device while passing the front side of the electron beam irradiation device. As shown in FIG. 4, a negative charge stays inside the wall of the resin container 2, and a positive charge stays on the outer surface 2a and the inner surface 2b of the resin container 2. It becomes in the state that the ion which has has adhered. In particular, in the state of FIG. 4, the outer surface 2a side that has been directly irradiated with the electron beam has a higher potential than the inner surface 2b side (the potential on the outer surface 2a side is C1 and the potential on the inner surface 2b side). ), A potential difference V is generated between the outer surface 2a and the inner surface 2b.
JP 2008-162651 A
　前記のように樹脂製容器の壁面の内部に電荷が滞留すると、外側の表面と、内部側の表面に滞留する電荷が異なって、内面と外面との間に電位差が発生する。このような状態の樹脂製容器に手や口が触れると、静電気が発生する場合がある。そこで、樹脂製容器の壁体の内外面の電位差がどのように存在しているかを測定する必要があった。 As described above, when the electric charge stays inside the wall surface of the resin container, the electric charge staying on the outer surface and the inner surface is different, and a potential difference is generated between the inner surface and the outer surface. When a hand or mouth touches the resin container in such a state, static electricity may be generated. Therefore, it has been necessary to measure how the potential difference between the inner and outer surfaces of the wall of the resin container exists.
　本発明は、樹脂製容器の内面と外面の電位差を測定する測定装置であって、液体が充填された樹脂製容器と、内部に液体が満たされ、その液体内に前記樹脂製容器が配置されるコンテナと、樹脂製容器内に充填されている液体に接続される第１電極と、コンテナ内に満たされている液体に接続される第２電極と、前記第１電極と第２電極とを連通する回路と、この回路に接続され、この回路内を流れる電圧を測定する電圧測定手段とを備えたものである。 The present invention is a measuring apparatus for measuring a potential difference between an inner surface and an outer surface of a resin container, wherein the resin container is filled with a liquid, the liquid is filled inside, and the resin container is disposed in the liquid. A container, a first electrode connected to the liquid filled in the resin container, a second electrode connected to the liquid filled in the container, and the first electrode and the second electrode The circuit includes a communication circuit, and a voltage measurement unit that is connected to the circuit and measures a voltage flowing in the circuit.
　また、第２の発明は、前記第１の発明において、前記電圧測定手段と並列に抵抗を配置したことを特徴とするものである。 The second invention is characterized in that, in the first invention, a resistor is arranged in parallel with the voltage measuring means.
　さらに、第３の発明に係る測定方法は、樹脂製容器の内面と外面の電位差を測定する測定方法であって、樹脂製容器の内面と外面とをそれぞれ電導性の媒体に接触させた後に、内面に接触させた電導性の媒体と外面に接触させた電導性の媒体とを接続する回路を形成し、この回路内を流れる電圧を測定することにより樹脂製容器の内面と外面の電位差を測定することを特徴とするものである。 Furthermore, the measurement method according to the third invention is a measurement method for measuring the potential difference between the inner surface and the outer surface of the resin container, and after bringing the inner surface and the outer surface of the resin container into contact with the conductive medium, respectively. A circuit that connects the conductive medium in contact with the inner surface and the conductive medium in contact with the outer surface is formed, and the potential difference between the inner surface and the outer surface of the resin container is measured by measuring the voltage flowing in this circuit. It is characterized by doing.
　本発明の測定装置は、液体を満たしたコンテナ内に、液体を充填した樹脂製容器を配置し、両容器内の液体にそれぞれ電極を挿入し、両電極を接続してスイッチによりオンオフ可能な電気回路を形成し、この電気回路内に測定手段を接続するという簡単な構成で、樹脂製容器の壁体の内面側と外面側との電位差を正確に測定することができるという利点がある。 The measuring device according to the present invention has an electric container that can be turned on and off by a switch by placing resin containers filled with liquid in a container filled with liquid, inserting electrodes into the liquid in both containers, and connecting both electrodes. There is an advantage that the potential difference between the inner surface side and the outer surface side of the wall of the resin container can be accurately measured with a simple configuration in which a circuit is formed and a measuring means is connected in the electric circuit.
図１は樹脂製容器の内外面の電位差を測定する測定装置を簡略化して示す構成図である。（実施例１）FIG. 1 is a schematic diagram showing a measuring apparatus for measuring a potential difference between the inner and outer surfaces of a resin container. Example 1 図２は図１に示す測定装置の測定時の状態を示す図である。FIG. 2 is a diagram showing a state at the time of measurement of the measuring apparatus shown in FIG. 図３は電圧測定手段であるオシロスコープによって測定した電圧波形を示すグラフである。FIG. 3 is a graph showing voltage waveforms measured by an oscilloscope as voltage measuring means. 図４は樹脂製容器に電子線を照射して殺菌したときに、樹脂製容器の壁体に滞留した電荷と内外面の電位差の一例を示す図である。FIG. 4 is a diagram showing an example of the electric charge accumulated in the wall of the resin container and the potential difference between the inner and outer surfaces when the resin container is sterilized by irradiation with an electron beam.
　　２　　樹脂製容器
　　２ａ　樹脂製容器の外面
　　２ｂ　樹脂製容器の内面
　　８　　コンテナ
　１２　　第１電極
　１４　　第２電極
　１８　　回路
　２０　　電圧測定手段 DESCRIPTION OF SYMBOLS 2 Resin container 2a Outer surface of resin container 2b Inner surface of resin container 8 Container 12 First electrode 14 Second electrode 18 Circuit 20 Voltage measuring means
　内部に液体を満たした状態でコンテナを設置し、内部に飲料等の液体が充填された樹脂製容器を前記コンテナの液体内に配置する。樹脂製容器内に充填されている液体内に第１電極を挿入するとともに、コンテナ内の液体には第２電極を挿入し、これら第１電極と第２電極を接続する電気回路を形成して、スイッチによりオンオフできるようにしている。この電気回路にオシロスコープを接続して回路内の電圧を測定する。このような簡単な構成により、簡単な操作で樹脂製容器の内面と外面との間の電位差を測定するという目的を実現した。 A container is installed in a state where the liquid is filled inside, and a resin container filled with a liquid such as a drink is placed in the liquid of the container. The first electrode is inserted into the liquid filled in the resin container, the second electrode is inserted into the liquid in the container, and an electric circuit for connecting the first electrode and the second electrode is formed. The switch can be turned on and off. An oscilloscope is connected to this electric circuit to measure the voltage in the circuit. With such a simple configuration, the object of measuring the potential difference between the inner surface and the outer surface of the resin container with a simple operation has been realized.
　以下、図面に示す実施例により本発明を説明する。何らかの操作により、その壁体に電荷が滞留し、しかもその電荷に偏りがある樹脂製容器２は、例えば、樹脂製容器２の外面２ａ側と内面２ｂ側との間に電位差が生じている。この実施例に係る測定装置はその電位差を測定する装置である。 Hereinafter, the present invention will be described with reference to embodiments shown in the drawings. For example, in the resin container 2 in which charges are accumulated in the wall body due to some operation and the charge is biased, a potential difference is generated between the outer surface 2 a side and the inner surface 2 b side of the resin container 2. The measuring apparatus according to this embodiment is an apparatus for measuring the potential difference.
　この測定装置は、樹脂製の土台４と、この土台４上に載せられ、内部に液体６が満たされた金属製のコンテナ８と、内部に液体１０が充填され、前記コンテナ８内に満たされている液体６内に配置された樹脂製容器２と、樹脂製容器２内に充填されている液体１０内に挿入されている第１電極１２と、前記コンテナ８内に満たされている液体６内に挿入されている第２電極１４と、これら第１電極１２と第２電極１４とを連通するとともに一端がアース１６されている電気回路１８と、この電気回路１８に接続され、電気回路１８内の電圧を測定する電圧測定手段としてのオシロスコープ２０とを備えている。この電気回路１８はスイッチ２２によってオンオフされる。さらに、この電気回路１８に接続されたオシロスコープ２０と並列に接続された抵抗２４を有している。 This measuring apparatus is made of a resin base 4, a metal container 8 placed on the base 4 and filled with a liquid 6, and filled with a liquid 10, and filled in the container 8. The resin container 2 disposed in the liquid 6, the first electrode 12 inserted in the liquid 10 filled in the resin container 2, and the liquid 6 filled in the container 8. The second electrode 14 inserted in the electric circuit 18, the electric circuit 18 communicating with the first electrode 12 and the second electrode 14 and having one end grounded 16, and the electric circuit 18 connected to the electric circuit 18 And an oscilloscope 20 as voltage measuring means for measuring the internal voltage. The electric circuit 18 is turned on / off by a switch 22. Furthermore, it has a resistor 24 connected in parallel with an oscilloscope 20 connected to the electric circuit 18.
　前記測定装置のスイッチ２２をオンにすると（図２に示す状態）、電気回路１８が接続され、樹脂製容器２内に充填されている液体１０が接している樹脂製容器２の内面２ｂ側と、金属容器８内に満たされている液体６が接している樹脂製容器２の外面２ａ側との電位差（電圧）が、前記オシロスコープ２０に表示される。図３は、オシロスコープ２０に表示された電圧波形であり、樹脂製容器２の壁体の内面２ｂ側と外面２ａ側との電位差が測定される。また、この図３に示すように、電気回路１８が接続されることによって樹脂製容器２の内外面２ａ、２ｂに不均衡に滞留していた電荷が流れてほぼ等しくなり、電位差がなくなる（図２の符号０は、測定前の電位差Ｖ（図１参照）が消滅したことを示している）。 When the switch 22 of the measuring device is turned on (state shown in FIG. 2), the electric circuit 18 is connected, and the inner surface 2b side of the resin container 2 with which the liquid 10 filled in the resin container 2 is in contact. The potential difference (voltage) from the outer surface 2a side of the resin container 2 in contact with the liquid 6 filled in the metal container 8 is displayed on the oscilloscope 20. FIG. 3 is a voltage waveform displayed on the oscilloscope 20, and the potential difference between the inner surface 2b side and the outer surface 2a side of the wall of the resin container 2 is measured. Further, as shown in FIG. 3, by connecting the electric circuit 18, the charges staying in an unbalanced manner on the inner and outer surfaces 2a, 2b of the resin container 2 flow and become almost equal, and there is no potential difference (see FIG. 3). The symbol 0 of 2 indicates that the potential difference V before measurement (see FIG. 1) has disappeared).
　この測定装置によって樹脂製容器２の電位差を測定する場合に、スイッチ２２をオンにすると瞬間的に電位差が低下するため測定しづらいので、この実施例では抵抗２４を介在させて反応速度を遅くしている。また、抵抗２４を介しているので、抵抗値から電流値を求め、電流値がどのくらいの時間流れるかを計測することにより電荷の量を算出することもできる。 When measuring the potential difference of the resin container 2 with this measuring device, since the potential difference instantaneously decreases when the switch 22 is turned on, it is difficult to measure. Therefore, in this embodiment, the reaction rate is slowed by interposing a resistor 24. ing. Further, since the resistor 24 is interposed, the amount of charge can be calculated by obtaining a current value from the resistance value and measuring how long the current value flows.
　なお、前記実施例では、コンテナ８を鉄やステンレス等の金属製としたが、金属製に限らず樹脂製等であってもよい。また、金属製のコンテナ８の場合には、電極（第２電極１４）を内部に満たされた液体６とコンテナ８のいずれかに接続すればよいが、樹脂製のコンテナ８の場合には、電極１４は内部の液体に接続しなければならない。コンテナ８内に入れる液体６および樹脂製容器２内に充填される液体１０は、導電性をある程度有する液体であればどのような液体を使用してもよい。また、前記コンテナ８を載せる土台４は省略することもできる。 In the above embodiment, the container 8 is made of metal such as iron or stainless steel, but it is not limited to metal but may be made of resin. In the case of the metal container 8, the electrode (second electrode 14) may be connected to either the liquid 6 filled in the container or the container 8, but in the case of the resin container 8, The electrode 14 must be connected to the liquid inside. Any liquid may be used as the liquid 6 placed in the container 8 and the liquid 10 filled in the resin container 2 as long as the liquid has some conductivity. Further, the base 4 on which the container 8 is placed can be omitted.
　前記実施例では、電気回路２２の連通遮断を行うスイッチ２２を、図示の位置に設けたが、例えば、図１中に符号Ａで示す位置にスイッチを設けるようにしてもよい。但し、この位置にスイッチを設けた場合には、コンテナが樹脂製の場合には問題ないが、金属製のコンテナの場合には、床面に直接設置すると樹脂製容器内とコンテナが連通してしまうので、非電導性の土台を設ける必要がある。なお、この実施例では、電導性の媒体として水などの液体６、１０を用いたが、このような液体以外の電導性の媒体として、例えば、銅やアルミニウムの薄膜を用いることもできる。これら薄膜を樹脂製容器２の内面と外面に貼り付けても前記実施例と同様に電位差を測定することができる。 In the above embodiment, the switch 22 that cuts off the communication of the electric circuit 22 is provided at the position shown in the figure. However, for example, a switch may be provided at the position indicated by the symbol A in FIG. However, if a switch is provided at this position, there is no problem when the container is made of resin. However, in the case of a metal container, the container is connected to the resin container when installed directly on the floor. Therefore, it is necessary to provide a non-conductive base. In this embodiment, the liquids 6 and 10 such as water are used as the conductive medium. However, as the conductive medium other than such a liquid, for example, a thin film of copper or aluminum can be used. Even if these thin films are affixed to the inner surface and the outer surface of the resin container 2, the potential difference can be measured in the same manner as in the previous embodiment.

Claims (3)

  1. 　樹脂製容器の内面と外面の電位差を測定する測定装置であって、
    　液体が充填された樹脂製容器と、内部に液体が満たされ、その液体内に前記樹脂製容器が配置されるコンテナと、樹脂製容器内に充填されている液体に接続される第１電極と、コンテナ内に満たされている液体に接続される第２電極と、前記第１電極と第２電極とを連通する回路と、この回路に接続され、この回路内を流れる電圧を測定する電圧測定手段とを備えた測定装置。     A measuring device for measuring a potential difference between an inner surface and an outer surface of a resin container,
    A resin container filled with a liquid, a container filled with the liquid and the resin container disposed therein, and a first electrode connected to the liquid filled in the resin container; A second electrode connected to the liquid filled in the container, a circuit communicating the first electrode and the second electrode, and a voltage measurement connected to the circuit and measuring a voltage flowing through the circuit And a measuring device.
  2. 　前記電圧測定手段と並列に抵抗を配置したことを特徴とする請求項１に記載の測定装置。 2. The measuring apparatus according to claim 1, wherein a resistor is arranged in parallel with the voltage measuring means.
  3. 　樹脂製容器の内面と外面の電位差を測定する測定方法であって、
    　樹脂製容器の内面と外面とをそれぞれ電導性の媒体に接触させた後に、内面に接触させた電導性の媒体と外面に接触させた電導性の媒体とを接続する回路を形成し、この回路内を流れる電圧を測定することにより樹脂製容器の内面と外面の電位差を測定することを特徴とする測定方法。     A measurement method for measuring a potential difference between an inner surface and an outer surface of a resin container,
    After the inner surface and outer surface of the resin container are brought into contact with the conductive medium, a circuit is formed to connect the conductive medium in contact with the inner surface and the conductive medium in contact with the outer surface. A measurement method characterized by measuring a potential difference between an inner surface and an outer surface of a resin container by measuring a voltage flowing inside.
PCT/JP2011/074356 2010-10-27 2011-10-21 Measurement device and measurement method WO2012057041A1 (en)

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