JPH081466B2 - How to detect the presence of transparent film - Google Patents
How to detect the presence of transparent filmInfo
- Publication number
- JPH081466B2 JPH081466B2 JP28001290A JP28001290A JPH081466B2 JP H081466 B2 JPH081466 B2 JP H081466B2 JP 28001290 A JP28001290 A JP 28001290A JP 28001290 A JP28001290 A JP 28001290A JP H081466 B2 JPH081466 B2 JP H081466B2
- Authority
- JP
- Japan
- Prior art keywords
- energy
- transparent film
- radiant energy
- measured
- reflected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000463 material Substances 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 11
- 239000011521 glass Substances 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229920006257 Heat-shrinkable film Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Geophysics And Detection Of Objects (AREA)
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は他の材料に被覆した透明フィルムがあるか否
かを検出するための簡便な方法に関する。DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL FIELD OF APPLICATION The present invention relates to a simple method for detecting the presence or absence of a transparent film coated with another material.
〈従来の技術〉 あるべき所定部にフィルムがあるか否かを検出するた
めには、フィルムが不透明なものである限り、光電スイ
ッチ等を使用すれば十分であるが、フィルムが透明性の
場合、視覚、触覚等による官能的方法が主流であった。
しかしながらこうした方法では大量に扱うことはむずか
しく問題であった。<Prior Art> In order to detect whether or not a film is present in a predetermined portion, it is sufficient to use a photoelectric switch or the like as long as the film is opaque, but when the film is transparent Sensual methods such as visual and tactile were the mainstream.
However, handling a large amount by such a method was a difficult problem.
近年透明フィルムからなる熱収縮性キャップシール、
ラベル等が容器の口部や胴部に使用されるケースが多
く、かかるキャップシール等は製品が開封されていない
ことを保障する有力な手段となっている。ところがこう
したキャップシール等は容器口部に自動機により連続的
に挿入被覆されるため、なかには被覆ミスが生ずるケー
スもある。こうした被覆ミス製品がそのまま外部に出る
ことは未開封保障の点で問題であり、厳しくチェックす
る必要がある。Recently heat-shrinkable cap seal made of transparent film,
In many cases, labels and the like are used on the mouth and body of containers, and such cap seals are a powerful means of ensuring that the product has not been opened. However, since such a cap seal or the like is continuously inserted and covered at the mouth of the container by an automatic machine, there are cases in which a coating error occurs. It is a problem in terms of unopened guarantee that such a coating error product goes out as it is, and it is necessary to strictly check it.
本願出願人は先に特願平１−164884号として、赤外線
を含むエネルギー源からの電磁波を所定箇所に放射し、
該電磁波における赤外線の反射強度を測定することによ
り、前記所定箇所での透明フィルムの有無を検出する方
法を提案した。しかし、該方法では、反射エネルギー＋
放射エネルギーを測定するため、所定箇所からの放射エ
ネルギーが反射エネルギーに比較して、大きくバラツキ
がある場合は、そのまま、検出レベルの変動につながる
という問題があった。The applicant of the present application, as Japanese Patent Application No. 1-164884, previously radiates an electromagnetic wave from an energy source including infrared rays to a predetermined location,
A method of detecting the presence or absence of a transparent film at the predetermined location by measuring the reflection intensity of infrared rays in the electromagnetic wave was proposed. However, in this method, the reflected energy +
Since the radiant energy is measured, there is a problem that if the radiant energy from a predetermined location has a large variation compared with the reflected energy, the detection level fluctuates as it is.
〈問題点を解決するための手段〉 本発明は例えば前記した如きキャップシール等が放射
エネルギーにバラツキがある容器口部の所定部に挿入被
覆されているか否か、即ち当該所定部での透明フィルム
の有無を検出する簡便方法を提供することを目的とす
る。<Means for Solving the Problems> The present invention is, for example, whether or not the cap seal or the like as described above is inserted and coated at a predetermined portion of the container mouth portion where the radiant energy varies, that is, the transparent film at the predetermined portion. It is an object of the present invention to provide a simple method for detecting the presence or absence of.
上記目的を達成するために、本願発明は、第１の位置
で透明フィルムを被覆するべき容器（被検出材料）の放
射エネルギーを測定し、第２の位置で被検出材料に赤外
線を含むエネルギー源からの電磁波を放射して、同材料
の赤外線領域における放射エネルギーと反射エネルギー
とを含めた加算エネルギーを測定し、加算エネルギーと
放射エネルギーとから反射エネルギー算出し、予め定め
てある反射エネルギーの基準値と大小を比較することに
より他の材料に被覆した透明フィルムの有無を検出する
ことを特徴とする。In order to achieve the above object, the present invention measures the radiant energy of a container (material to be detected) to be coated with a transparent film at a first position, and at the second position, an energy source containing infrared light in the material to be detected. Radiates an electromagnetic wave from, to measure the added energy including the radiant energy and the reflected energy in the infrared region of the same material, calculate the reflected energy from the added energy and the radiant energy, and a predetermined reference value of the reflected energy It is characterized in that the presence or absence of a transparent film coated with another material is detected by comparing the size with.
更に、第１の位置で被検出材料の赤外線領域における
放射エネルギー（T1）を測定し、第２の位置で同材料に
赤外線を含むエネルギー源からの電磁波を放射して、同
材料の赤外線領域における放射エネルギー（T1）と反射
エネルギー（T3）とを含めた加算エネルギー（T2）を測
定し、加算エネルギー（T2）と予め定めてある閾値直線
とから放射エネルギーの基準値（T0）を算出し、放射エ
ネルギー（T1）と大小を比較することを特徴とする。Furthermore, the radiant energy (T1) in the infrared region of the material to be detected is measured at the first position, and the electromagnetic wave from the energy source containing infrared light is radiated to the same material at the second position to emit the electromagnetic wave in the infrared region of the same material. The added energy (T2) including the radiant energy (T1) and the reflected energy (T3) is measured, and the reference value (T0) of the radiant energy is calculated from the added energy (T2) and a predetermined threshold straight line, It is characterized by comparing the radiant energy (T1) with the magnitude.
次に問題点を解決するための手段を更に詳述すること
にする。Next, means for solving the problem will be described in more detail.
本発明に係る赤外線を含むエネルギー源とは、赤外線
ランプ、白熱球等の光源を例示でき特に制限はないが、
被覆した透明フィルムの電磁波の吸収帯に相当する波長
帯域のエネルギーを放射するものであれば良い。こうし
たエネルギー源からの電磁波における赤外線の放射エネ
ルギー、反射エネルギーを測定するには赤外域の熱起電
力型素子、例えばサーモパイル、焦電素子等の検出機を
例示でき特に制限はない。The energy source containing infrared rays according to the present invention can be exemplified by a light source such as an infrared lamp and an incandescent bulb, but is not particularly limited,
Any material may be used as long as it radiates energy in a wavelength band corresponding to the electromagnetic wave absorption band of the coated transparent film. In order to measure radiant energy and reflected energy of infrared rays in electromagnetic waves from such an energy source, detectors such as thermoelectromotive force type elements in the infrared region, for example, thermopile, pyroelectric element, etc. can be exemplified and there is no particular limitation.
この際、特に制限はないが、放射あるいは反射された
電磁波は測定すべき赤外線以外のものをカットするのが
望ましく、例えばフィルターのような材料により、検出
機が測定でき透明フィルムの電磁波の吸収帯に相当する
波長のものを取り出すのが望ましい。例えば前記したサ
ーモパイルや焦電素子を検出機として用いる場合は、赤
外線の内でも例えば１〜20μ程度の波長から適宜範囲の
波長を前記フィルター等で取り出して、この範囲におけ
る放射、反射エネルギーを測定するのが望ましい。勿
論、検出機の精度いかんでは、波長が前記の値以外の赤
外線でも検出でき、従ってかかる値は特に制限を受ける
ものではない。At this time, there is no particular limitation, but it is desirable to cut off the electromagnetic waves emitted or reflected other than the infrared rays to be measured. For example, with a material such as a filter, the detector can measure the electromagnetic wave absorption band of the transparent film. It is desirable to take out the one having a wavelength corresponding to. For example, when the thermopile or the pyroelectric element described above is used as a detector, the infrared rays in the appropriate range from the wavelength of about 1 to 20 μ are extracted by the filter or the like, and the radiation in this range, and the reflected energy is measured. Is desirable. Of course, depending on the accuracy of the detector, infrared rays having a wavelength other than the above value can be detected, and thus such a value is not particularly limited.
通常エネルギーの単位は［W/m2］であり、完全黒体の
放射エネルギーＥは次式で表される。The unit of normal energy is [W / m 2 ], and the radiant energy E of a perfect blackbody is expressed by the following equation.
Ｅ［W/m2］＝６T4 E;エネルギー［W/m2］ 6;ステファニボルツマン係数 5.6697×10-8［W/m2／T4］ T;温度［Ｋ］ ここではをサーモパイルを使用して、波長７〜20μの
電磁波のエネルギーを測定し、温度換算値Ｔ℃で示す。E [W / m 2 ] = 6T 4 E; Energy [W / m 2 ] 6; Stefani Boltzmann coefficient 5.6697 × 10 -8 [W / m 2 / T 4 ] T; Temperature [K] Here, a thermopile is used. Then, the energy of an electromagnetic wave having a wavelength of 7 to 20 μm is measured and shown as a temperature conversion value T ° C.
第２図はＹ軸に放射エネルギーの温度換算値（以下放
射エネルギー）T1℃をとり、Ｘ軸に放射エネルギー＋光
源からの反射エネルギーである加算エネルギーの温度換
算値（以下加算エネルギー）T2℃をとり、１個のサンプ
ルに対して、１個のデータをプロットしたものである。In Fig. 2, the temperature converted value of radiant energy (hereinafter radiant energy) T 1 ° C is taken on the Y-axis, and the temperature converted value of added energy (hereinafter added energy) T 2 which is radiant energy + reflected energy from the light source is taken on the X-axis T 2 It is a plot of one data for one sample, taking ° C.
測定する７〜20μの波長帯域が透明フィルムの光吸収
帯に相当しており、透明フィルムが有る場合は反射エネ
ルギーが小さくなり、透明フィルムが無い場合は容器の
反射エネルギーが大きくなる。The wavelength band of 7 to 20 μ to be measured corresponds to the light absorption band of the transparent film, and the reflection energy is small when the transparent film is present, and the reflection energy of the container is large when the transparent film is not present.
第２図のデータのグループ10は、透明フィルムが有の
分布であり、グループ20は透明フィルムが無の分布であ
る。直線30はデータのグループ10の回帰直線をＸ軸方向
に、同グループ10の標準偏差の適宜のＮ倍を平行移動し
た閾値直線で、 式 Ｙ＝1.25X−73・・・ で示される。The group 10 of the data in FIG. 2 has a distribution with a transparent film, and the group 20 has a distribution without a transparent film. A straight line 30 is a threshold line obtained by translating the regression line of the data group 10 in the X-axis direction by an appropriate N times the standard deviation of the same group 10, and is represented by the formula Y = 1.25X−73.
こうした高温の容器に用いた透明フィルムが所定部に
存在しているか否かを検出するには、前記した如く、放
射エネルギーT1と加算エネルギーのT2を測定し、反射エ
ネルギーT3を 式 T3＝T2−T1・・・ より算出し、予め定めてある反射エネルギーの基準値
（T4）と大小を比較すれば良い。即ち T4−T3＞０ならばフイルム有 T4−T3＜０ならばフイルム無と判断する。In order to detect whether or not the transparent film used in such a high temperature container is present in a predetermined portion, as described above, the radiant energy T 1 and the added energy T 2 are measured, and the reflected energy T 3 is calculated by the formula T 3 = T 2 −T 1 ... It is sufficient to compare the magnitude with a predetermined reference value (T4) of reflected energy. That is, if T4-T3> 0, the film is present. If T4-T3 <0, it is determined that there is no film.
又、基準値の設定を、第２図の閾値直線30のように行
い下記の如く判断しても良い。Alternatively, the reference value may be set as shown by the threshold straight line 30 in FIG. 2 and the following judgment may be made.
第２図において、測定した加算エネルギーT2を閾値直
線30の式に代入し、同直線30上の放射エネルギーの基
準値T0を算出し、先に測定した放射エネルギーT1より T0−T1＞０ならばフィルム無 T0−T1＜０ならばフィルム有 と判断する。In FIG. 2, the measured added energy T 2 is substituted into the formula of the threshold straight line 30, the reference value T 0 of the radiant energy on the straight line 30 is calculated, and T 0 −T is calculated from the previously measured radiant energy T 1. If 1 > 0, there is no film. If T 0 −T 1 <0, it is judged that there is a film.
上記したように、基準値の設定を反射エネルギーで行
っても、放射エネルギーで行っても、両者の間には前記
式の関係があるので、各々の場合に問題無く判断でき
る。As described above, regardless of whether the reference value is set using reflected energy or radiant energy, there is a relation of the above equation between the two, and therefore it is possible to make a determination in each case without problems.
透明フイルムとは適宜の透明性を有するフィルム、シ
ート、板等を総称したもので着色されていても使用でき
るが一般には無色透明のものが用いられる。こうした透
明フィルムは熱収縮性であってもなくてもよいが前記キ
ャップシール、ラベル等に用いる場合は熱収縮性が好ま
しく、電磁波の吸収帯が赤外線領域にあれば良い。The transparent film is a generic name for films, sheets, plates and the like having appropriate transparency, and although it can be used even if it is colored, a colorless and transparent film is generally used. Such a transparent film may or may not be heat-shrinkable, but when it is used for the cap seal, the label, etc., it is preferably heat-shrinkable and the absorption band of electromagnetic waves may be in the infrared region.
このような透明フィルムは、一般に他の材料と共に用
いられるものであり、従って本発明はこうした他の材料
の温度バラツキの大きい所定部に透明フィルムが配され
ているか否かを検出するもので、ここで他の材料として
はガラス瓶、プラスチック瓶等の容器、パイプその他外
形が円筒形状をした材料及び紙、フィルム、その他の板
状材料等を例示でき特に制限はない。Since such a transparent film is generally used together with other materials, the present invention detects whether or not the transparent film is arranged in a predetermined portion having a large temperature variation of these other materials. Examples of other materials include containers such as glass bottles and plastic bottles, pipes and other materials having a cylindrical outer shape, paper, films, and other plate-shaped materials, and there is no particular limitation.
例えば透明フィルムを容器と共に用いる場合は、前記
したキャップシール、ラベル等を容器の口部や胴部など
へ適応することが一般的で、また板状材料と共に使用す
る場合は、板状材料に透明フィルムをラミネートする如
き方法で適応することが考えられる。For example, when using a transparent film with a container, it is common to apply the above-mentioned cap seal, label, etc. to the mouth and body of the container, and when used with a plate-shaped material, the plate-shaped material is transparent. It is conceivable to adapt in such a way as to laminate the film.
（実施例） ガラス瓶の内部に前工程において温度にバラツキのあ
る液体が封入され、同瓶の口部が厚さ40〜50μの透明熱
収縮性フイルムの筒状体からなるキャップシールにより
被覆されているか否かを収縮トンネルを通過の後次のよ
うに測定した。この条件になると被測物の放射エネルギ
ーのバラツキはかなり大きくなる。(Example) A glass bottle was filled with a liquid having a temperature variation in the previous step, and the mouth of the bottle was covered with a cap seal made of a transparent heat-shrinkable film tubular body having a thickness of 40 to 50 μ. After passing through the contraction tunnel, the presence or absence was measured as follows. Under this condition, the variation of the radiant energy of the DUT becomes considerably large.
第１図は、本発明による一実施例の要部平面図で、１
はガラス瓶2A、2B、・・・を搬送するコンベアーで、同
コンベアー１の搬送域内の第１の位置Ａにサーモパイル
３を設ける。更に同コンベアー１の下流側で、位置Ａに
近接する第２の位置Ｂにサーモパイル４を設けると共に
放射する白熱球５を設け、位置Ｂにあるガラス瓶2Bに赤
外線を放射する。FIG. 1 is a plan view of an essential part of an embodiment according to the present invention.
Is a conveyer for conveying the glass bottles 2A, 2B, ..., In which a thermopile 3 is provided at a first position A in the conveyer 1 conveying area. Further, on the downstream side of the conveyor 1, a thermopile 4 is provided at a second position B close to the position A, and an incandescent bulb 5 for radiating is provided, and infrared rays are radiated to the glass bottle 2B at the position B.
今、位置Ａにおけるサーモパイル３が、ガラス瓶2Aの
放射エネルギーT1を測定すると58℃であり、次の位置Ｂ
のサーモパイル４がガラス瓶2Aの加算エネルギーT2を測
定すると85℃であった。Now, when the thermopile 3 at the position A measures the radiant energy T 1 of the glass bottle 2A, it is 58 ° C., and the next position B
Thermopile 4 of No. 2 measured the additional energy T 2 of the glass bottle 2A and found to be 85 ° C.
フイルムの有無を判断するため反射エネルギーの基準
値（T4）を設定するには、式より、又は第２図より T0＝1.25＊85−73≒33.5℃の放射エネルギー基準値を
求め、次に式より T4＝T4−T0＝85−33.5＝51.5の反射エネルギー基準値
（T0）を求める。更に、測定した放射エネルギー58℃と
加算エネルギー85℃とを式に代入して T3＝85−58＝27℃の反射エネルギー値を求め よって T4−T3＝51.5−27℃＝24.5℃＞０であるからフイルム
有と判断する。To set the reference value (T4) of reflected energy to judge the presence or absence of film, find the radiant energy reference value of T0 = 1.25 * 85-73 ≒ 33.5 ° C from the formula or from Fig. 2, then use the formula Then, the reflected energy reference value (T0) of T4 = T4-T0 = 85-33.5 = 51.5 is obtained. Further, by substituting the measured radiant energy 58 ° C and the added energy 85 ° C into the formula to obtain the reflected energy value of T3 = 85-58 = 27 ° C, T4-T3 = 51.5-27 ° C = 24.5 ° C> 0. It is judged that there is a film.
又、次に式或いは第２図のしきい値直線30より、加
算エネルギー85℃に対応する放射エネルギーの基準値T0
＝33.5℃を算出した。Further, next, from the equation or the threshold straight line 30 of FIG. 2, the reference value T 0 of the radiant energy corresponding to the added energy of 85 ° C.
= 33.5 ° C was calculated.
次にT0−T1＝33.5−58＜０であるからフィルム有の判
断が行われた。Next, since T 0 −T 1 = 33.5−58 <0, the presence of the film was judged.
〈効果〉 以上の如き透明フィルムの有無を検出する方法による
と、透明フィルムを被覆した材料が高温で温度のバラツ
キが大きくても、反射エネルギーが安定して測定される
ので、透明フィルムの有無が正確に検出可能となる。<Effect> According to the method for detecting the presence or absence of the transparent film as described above, the reflected energy is stably measured even if the material coated with the transparent film has a large temperature variation at a high temperature. It can be accurately detected.
第１図は本実施例の要部平面概略図で、第２図は測定し
た放射エネルギーと加算エネルギー（放射エネルギー＋
反射エネルギー）のデータを示すグラフである。 １……コンベアー、２……ガラス瓶FIG. 1 is a schematic plan view of a main part of this embodiment, and FIG. 2 is a diagram showing the measured radiant energy and added energy (radiant energy +
It is a graph which shows the data of reflection energy. 1 ... Conveyor, 2 ... Glass bottle
Claims (2)
検出する方法において、第１の位置で被検出材料の赤外
線領域における放射エネルギー（T1）を測定し、第２の
位置で同材料に赤外線を含むエネルギー源からの電磁波
を放射して、同材料の赤外線領域における放射エネルギ
ー（T1）と反射エネルギー（T3）とを含めた加算エネル
ギー（T2）を測定し、加算エネルギー（T2）と放射エネ
ルギー（T1）とから反射エネルギー（T3）を算出し、予
め定めてある反射エネルギーの基準値（T4）との大小を
比較することを特徴とする透明フイルムの有を検出する
方法。1. A method for detecting the presence or absence of a transparent film coated with another material, wherein the radiant energy (T1) in the infrared region of the material to be detected is measured at a first position, and the same material is measured at a second position. Emitting an electromagnetic wave from an energy source including infrared rays, measuring the added energy (T2) including the radiant energy (T1) and the reflected energy (T3) in the infrared region of the same material, and emitting the added energy (T2). A method for detecting the presence of a transparent film, which comprises calculating reflected energy (T3) from energy (T1) and comparing the magnitude with a predetermined reference value (T4) of reflected energy.
検出する方法において、第１の位置で被検出材料の赤外
線領域における放射エネルギー（T1）を測定し、第２の
位置で同材料に赤外線を含むエネルギー源からの電磁波
を放射して、同材料の赤外線領域における放射エネルギ
ー（T1）と反射エネルギー（T3）とを含めた加算エネル
ギー（T2）を測定し、加算エネルギー（T2）と予め定め
てある閾値直線とから放射エネルギーの基準値（T0）を
算出し、放射エネルギー（１）との大小を比較すること
を特徴とする透明フイルムの有無を検出する方法。2. A method for detecting the presence or absence of a transparent film coated with another material, wherein the radiant energy (T1) in the infrared region of the material to be detected is measured at the first position and the same material is measured at the second position. Emitting electromagnetic waves from an energy source including infrared rays, measuring the added energy (T2) including the radiant energy (T1) and reflected energy (T3) in the infrared region of the same material, and adding energy (T2) in advance A method for detecting the presence / absence of a transparent film, which is characterized by calculating a reference value (T0) of radiant energy from a predetermined threshold straight line and comparing the magnitude with the radiant energy (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28001290A JPH081466B2 (en) | 1990-10-17 | 1990-10-17 | How to detect the presence of transparent film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28001290A JPH081466B2 (en) | 1990-10-17 | 1990-10-17 | How to detect the presence of transparent film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04155288A JPH04155288A (en) | 1992-05-28 |
| JPH081466B2 true JPH081466B2 (en) | 1996-01-10 |
Family
ID=17619074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28001290A Expired - Fee Related JPH081466B2 (en) | 1990-10-17 | 1990-10-17 | How to detect the presence of transparent film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH081466B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002543405A (en) * | 1999-04-29 | 2002-12-17 | プレスコ テクノロジー インコーポレーテッド | System and method for inspecting structural integrity of visually distinct objects |
| JP2001114537A (en) * | 1999-10-14 | 2001-04-24 | Central Glass Co Ltd | Apparatus for producing multiple glass |
-
1990
- 1990-10-17 JP JP28001290A patent/JPH081466B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04155288A (en) | 1992-05-28 |
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