JP2005224779A - Coating layer detection method and device and cylindrical sticking method and device using it - Google Patents

Coating layer detection method and device and cylindrical sticking method and device using it Download PDF

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JP2005224779A
JP2005224779A JP2004038897A JP2004038897A JP2005224779A JP 2005224779 A JP2005224779 A JP 2005224779A JP 2004038897 A JP2004038897 A JP 2004038897A JP 2004038897 A JP2004038897 A JP 2004038897A JP 2005224779 A JP2005224779 A JP 2005224779A
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coating layer
film
cylinder
coating
winding
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Takayuki Ueki
貴之 植木
Kozo Mita
浩三 三田
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a detection method capable of detecting existence of a transparent and hardly discriminated coating layer such as a coating layer formed by coating an adhesive liquid onto the original film during traveling of an original film, and a device. <P>SOLUTION: Thickness of the coating layer of the coating layer formation area of the continuously traveling original film 2 is measured by a laser displacement meter. It is determined whether or not the measured thickness exceeds the minimum thickness required for the coating layer. Thereby, existence of the appropriate coating layer is detected. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、原反フィルムに形成した塗布層、例えば、軟包装分野で主に飲料、食油、化成品等が充填されるボトルへ外嵌装着される筒状のラベルを製造する工程などで、原反フィルムに接着液を連続的に塗布して形成した塗布層の有無を検知する技術に関する。   The present invention is a process for producing a coating label formed on a raw film, for example, a cylindrical label that is externally fitted to a bottle filled with beverages, cooking oils, chemical products, etc. in the flexible packaging field, etc. The present invention relates to a technique for detecting the presence or absence of a coating layer formed by continuously applying an adhesive liquid to a raw film.

従来、飲料等の容器に嵌装着されるラベルは、ポリエチレン、ポリプロピレン、ポリスチレン、ポリエステルフィルムなどから構成され、多くは筒状のラベルとして供給されている。これらのフィルムから作製されるラベルは、筒状とするために、原反フィルムの両端部の一方若しくは双方に接着液を塗布し、原反フィルムの両端部を重ね合わせ、その重合部を接合して筒状とし、その後巻き取るという方法で作製している。ここで接着液には、ストレッチラベルにおいては接着剤が用いられ、シュリンクラベルにおいては溶剤(接着溶剤或いは溶着溶剤という)が用いられている。   Conventionally, a label fitted to a container such as a beverage is made of polyethylene, polypropylene, polystyrene, polyester film, and the like, and many are supplied as a cylindrical label. In order to make the label produced from these films into a cylindrical shape, an adhesive solution is applied to one or both ends of the original film, the both ends of the original film are overlapped, and the overlapping portion is joined. It is made by the method of making it cylindrical and then winding it. Here, as the adhesive liquid, an adhesive is used in the stretch label, and a solvent (referred to as an adhesive solvent or a welding solvent) is used in the shrink label.

しかしながら、上記した接着液は無色透明で、筒状加工工程で接着液が原反フィルムの端部に塗布されているか否かを確認することはきわめて困難であった。また、連続塗布速度も早く、目視等による確認はほとんど不可能であった。   However, the above-mentioned adhesive liquid is colorless and transparent, and it has been extremely difficult to confirm whether or not the adhesive liquid is applied to the end of the raw film in the cylindrical processing step. In addition, the continuous application speed was fast, and visual confirmation was almost impossible.

そこで上記問題を解決する目的で、接着液の中へ蛍光染料を添加しておき、蛍光染料を混入した接着液を原反フィルムに塗布し、その塗布部分を蛍光検知装置によって検知することで、接着液の塗布状態を確認、検知する方法が提案されている(例えば、特開2002−239448号公報参照)。しかし、この方法は塗布の状態を明確に確認、検知できるものの、蛍光染料を使用していることから人体への影響が大きく懸念され、食品及び飲料用途には向かないという問題点があった。
特開2002−239448号公報参照
Therefore, for the purpose of solving the above problem, a fluorescent dye is added to the adhesive liquid, the adhesive liquid mixed with the fluorescent dye is applied to the original film, and the application part is detected by the fluorescence detection device. A method for confirming and detecting the application state of the adhesive liquid has been proposed (see, for example, JP-A-2002-239448). However, although this method can clearly check and detect the state of application, since it uses a fluorescent dye, there is a great concern about the influence on the human body and there is a problem that it is not suitable for food and beverage applications.
See JP 2002-239448 A

本発明はかかる問題点に鑑みてなされたもので、接着液を塗布して形成した塗布層のように、透明で識別しにくい塗布層であってもその塗布層の有無を、原反フィルムの走行中に検知することを可能とする塗布層検知方法及び装置を提供することを課題とする。   The present invention has been made in view of such problems, and the presence or absence of the coating layer is determined even if the coating layer is transparent and difficult to identify, such as a coating layer formed by applying an adhesive liquid. It is an object of the present invention to provide a coating layer detection method and apparatus that can be detected during traveling.

本発明者らは上記課題を解決すべく種々検討の結果、走行中の原反フィルムに形成している塗布層の厚みを、レーザ変位計を用いることで測定することができることを見出し、本発明を完成した。すなわち、本願請求項1に係る発明に係る塗布層検知方法は、連続的に走行している原反フィルムの塗布層形成領域にレーザ変位計にてレーザ照射し、その領域にある塗布層の厚みを測定する工程と、その結果から塗布層の有無を判定する工程とを有することを特徴とする。この構成により、レーザ変位計による厚み測定結果が所定値以上である時には、正常な塗布層が存在すると判断でき、塗布層内に蛍光染料を使用しなくても塗布層の有無を検知できる。   As a result of various studies to solve the above problems, the present inventors have found that the thickness of a coating layer formed on a running raw film can be measured by using a laser displacement meter. Was completed. That is, in the coating layer detection method according to the first aspect of the present invention, a laser displacement meter is used to irradiate a coating layer forming region of a continuously running raw film with a laser displacement meter, and the thickness of the coating layer in that region is measured. And a step of determining the presence or absence of a coating layer from the result. With this configuration, when the thickness measurement result by the laser displacement meter is equal to or greater than a predetermined value, it can be determined that a normal coating layer exists, and the presence or absence of the coating layer can be detected without using a fluorescent dye in the coating layer.

請求項2に係る発明は、上記した塗布層検知方法を筒貼り方法に用いたものである。すなわち、この発明は、原反フィルムの巻取から原反フィルムを引き出し、連続的に走行させながら、該原反フィルムの端部に接着液を連続的に塗布する工程と、塗布によって形成した塗布層の有無を請求項1に記載の塗布層検知方法によって検知する工程と、原反フィルムの両端部を重ね合わせ、その重合部を接合して筒状とする筒貼り工程と、筒貼りしたフィルムを巻き取る巻取り工程とを有する筒貼り方法である。筒貼り工程に上記した塗布層検知方法を用いたことで、作製した筒状のフィルムに接着不良の部分があるか否か、また、接着不良があった場合にはその位置等を知ることができる。   The invention according to claim 2 uses the coating layer detection method described above for the cylinder pasting method. That is, the present invention includes a step of continuously applying an adhesive liquid to the end of the original film while drawing the original film from the winding of the original film and continuously running the film, and an application formed by application A step of detecting the presence or absence of a layer by the coating layer detection method according to claim 1, a cylinder pasting step in which both ends of the raw film are overlapped and the overlapping portions are joined to form a cylinder, and the cylinder pasted film It is the cylinder sticking method which has a winding-up process which winds up. By using the above-mentioned coating layer detection method in the cylinder pasting step, it is possible to know whether or not there is an adhesion failure portion in the produced cylindrical film, and if there is an adhesion failure, know the position and the like. it can.

請求項3に係る発明は、請求項2の筒貼り方法において、更に、塗布層が無いと検知された部分に識別用のテープを付与する工程を設けたことを特徴とする。これにより、作製された製品内の接着不良個所をテープによって容易に知ることができる。   The invention according to claim 3 is characterized in that, in the cylinder pasting method according to claim 2, a step of applying an identification tape to a portion detected as having no coating layer is further provided. As a result, it is possible to easily know the location of poor adhesion in the manufactured product with the tape.

請求項4に係る発明は、連続的に走行している原反フィルムの塗布層形成領域にレーザ光照射し、その領域にある塗布層の厚みを測定するレーザ変位計と、該レーザ変位計による測定結果から塗布層の有無を判定する手段とを有する塗布層検知装置である。この装置を用いることで、請求項1に係る発明の塗布層検知方法を実施して、塗布層の有無を検知できる。   According to a fourth aspect of the present invention, there is provided a laser displacement meter that irradiates a coating layer forming region of a continuously running raw film with a laser beam and measures the thickness of the coating layer in the region, and the laser displacement meter. And a means for determining the presence or absence of a coating layer from a measurement result. By using this apparatus, it is possible to detect the presence or absence of a coating layer by carrying out the coating layer detection method of the invention according to claim 1.

請求項5に係る発明は、上記した塗布層検知装置を筒貼り装置に用いたものである。すなわち、この発明は、原反フィルムの巻取をセットし、その巻取から原反フィルムを繰り出す給紙部と、連続的に走行中の原反フィルムの端部に接着液を連続的に塗布する塗布装置と、該塗布装置の下流に設けられ、該塗布装置によって原反フィルムの端部に形成した塗布層の有無を検知する請求項4に記載の塗布層検知装置と、その下流に配置され、原反フィルムの両端部を重ね合わせ、その重合部を接合して筒状とする筒貼り部と、筒貼りしたフィルムを巻き取る巻取部とを有する筒貼り装置である。この装置では、筒貼り装置に上記した塗布層検知装置を用いたことで、作製した筒状のフィルムに接着不良の部分があるか否か、接着不良があった場合にはその位置等を知ることができる。   According to a fifth aspect of the present invention, the above-described coating layer detection device is used for a cylinder pasting device. That is, the present invention sets the winding of the raw film, and continuously applies the adhesive liquid to the paper feeding unit that feeds the raw film from the winding and the end of the running raw film continuously. The coating device which is provided in the downstream of this coating device and detects the presence or absence of the coating layer formed in the edge part of a raw film with this coating device, and arrange | positioned downstream The cylinder pasting apparatus includes a cylinder pasting section that overlaps both ends of the raw film and joins the overlapping portions to form a cylinder, and a winding section that winds the film pasted on the cylinder. In this apparatus, by using the above-described coating layer detecting apparatus for the cylinder pasting apparatus, it is possible to know whether or not there is an adhesion failure portion in the produced cylindrical film, and if there is an adhesion failure, the position thereof is known. be able to.

請求項6に係る発明は、請求項5の筒貼り装置において、更に、筒貼り部の下流に、前記塗布層検知装置によって塗布層が無いと検知された部分に識別用のテープを付与するテープ付与装置を設けたことを特徴とする。これにより、作製された製品内の接着不良個所をテープによって容易に知ることができる。   The invention according to claim 6 is the cylinder sticking device according to claim 5, further comprising a tape for applying an identification tape to a portion detected by the coating layer detecting device that there is no coating layer downstream of the tube sticking portion. An applicator is provided. As a result, it is possible to easily know the location of poor adhesion in the manufactured product with the tape.

本発明の塗布層検知方法及び装置によれば、走行中の原反フィルムの塗布層形成領域に存在するであろう塗布層の厚みをレーザ変位計で測定し、その測定値が所定値以上である時には正常な塗布層が存在していると判断することで、正常な塗布層の有無を判断でき、塗布層内に蛍光染料を使用しなくても塗布層の有無を検知できる。このため、蛍光染料を用いた際に生じる人体への影響を考慮する必要がなく、食品及び飲料用途に使用するフィルムに対する接着液の塗布状態の検知にも良好に使用できる。すなわち、本発明では蛍光染料などの有害物質を使用する必要がなく、また、検知対象の塗布層を着色する必要もないので、商品の美観性、身体環境的メリットが大きい。なお、検知対象である塗布層は、接着液を塗布して形成したものに限らず、樹脂を帯状に塗布して形成したパートコート等のコーティング層であってもよい。また、塗布層は液状のままであってもよいし、乾燥した状態であってもよく、いずれの場合でも検知できる。   According to the coating layer detection method and apparatus of the present invention, the thickness of the coating layer that will be present in the coating layer forming region of the running raw film is measured with a laser displacement meter, and the measured value is a predetermined value or more. In some cases, by determining that a normal coating layer exists, the presence or absence of a normal coating layer can be determined, and the presence or absence of the coating layer can be detected without using a fluorescent dye in the coating layer. For this reason, it is not necessary to consider the influence to the human body which arises when using fluorescent dye, and it can be used favorably also for the detection of the application state of the adhesive liquid to the film used for food and beverage applications. That is, in the present invention, it is not necessary to use harmful substances such as fluorescent dyes, and it is not necessary to color the coating layer to be detected. Note that the coating layer to be detected is not limited to the one formed by applying an adhesive liquid, and may be a coating layer such as a part coat formed by applying a resin in a band shape. Further, the coating layer may remain in a liquid state or may be in a dry state, and can be detected in any case.

本発明の塗布層検知方法及び装置は、筒状のラベルを連続的に作製する筒貼り方法及び装置にインラインで用いることが好ましく、この構成とすることで、接着液の塗布の有無を瞬時に判断することができ、また、製造された製品内に接着不良個所があるか否か、接着不良があった場合にはその位置等を知ることができ、後工程で不良個所を容易に除去することができる。よって、ラベルの接着不良、途中脱落などの事故、クレームが劇的に回避、減少するものと考えられる。   The coating layer detection method and apparatus of the present invention are preferably used in-line in a cylinder pasting method and apparatus for continuously producing a cylindrical label. With this configuration, the presence or absence of application of the adhesive liquid is instantaneously determined. It is possible to determine whether or not there is an adhesion failure location in the manufactured product, and if there is an adhesion failure, it is possible to know the position and the like, and easily remove the failure location in a later process. be able to. Therefore, it is considered that accidents such as poor adhesion of labels, dropping off in the middle, and claims are dramatically avoided and reduced.

以下、本発明を筒貼り工程における接着液の塗布層の有無検知に適用した実施形態を説明する。図1は筒状のラベルを作製するための筒貼り装置の概略構成を示す模式図であり、1は、原反フィルムの巻取2Aをセットし、その巻取2Aから原反フィルム2を繰り出す給紙部、3は連続的に走行中の原反フィルム2の端部に接着液を連続的に塗布して塗布層4(図2参照)を形成するための塗布装置、6はその下流に設けられ、原反フィルム2端部の塗布層の有無を検知する塗布層検知装置、7はその下流に配置され、原反フィルムの両端部を重ね合わせ、その重合部を接合して筒状とする筒貼り部、8は筒貼りしたフィルムを、巻取2Bを形成するように巻き取る巻取部である。ここで、塗布層検知装置6を除いた部分は公知の筒貼り装置と同様であるので、説明は省略する。   Hereinafter, an embodiment in which the present invention is applied to detection of the presence / absence of a coating layer of an adhesive liquid in a cylinder pasting step will be described. FIG. 1 is a schematic view showing a schematic configuration of a cylinder sticking apparatus for producing a cylindrical label. 1 is a roll 2A of a raw film set, and the raw film 2 is fed out of the roll 2A. A paper feeding unit 3 is a coating device for continuously applying an adhesive liquid to the end of the running raw film 2 to form a coating layer 4 (see FIG. 2), and 6 is a downstream side thereof. A coating layer detecting device 7 for detecting presence / absence of a coating layer at the end of the original film 2 is disposed downstream thereof, and both ends of the original film are overlapped, and the overlapping portion is joined to form a cylindrical shape. A cylinder pasting portion 8 is a winding portion for winding the cylinder-laminated film so as to form the winding 2B. Here, since the part except the coating layer detection apparatus 6 is the same as a well-known cylinder sticking apparatus, description is abbreviate | omitted.

原反フィルム2には、ポリエチレン、ポリプロピレン、ポリスチレン、ポリエステルフィルム等のラベルに使用することが可能なフィルムが使用される。   The raw film 2 is a film that can be used for a label such as polyethylene, polypropylene, polystyrene, or polyester film.

接着液としては、ポリエチレンやポリプロピレン等の耐溶剤性を有するオレフィン系フィルムに対しては、ポリウレタン樹脂系接着剤、ポリアミド樹脂系接着剤、ポリアクリル樹脂系接着剤、ポリ酢酸ビニル樹脂系接着剤、セルロース樹脂系接着剤、エポキシ樹脂系接着剤等の接着剤が使用される。これらの接着剤を用いる場合には、塗布装置3の下流に乾燥装置を配置して塗布した接着剤を乾燥させる場合もある。その場合、塗布層検知装置6は乾燥前の塗布層を検知する位置に配置してもよいが、乾燥後の塗布層を検知する位置に配置した方が、万一原反フィルム2に振動等があっても塗布層の接着剤が飛び散るということがなく、このため塗布層検知装置の検知部を接着剤で汚すということがなく、好ましい。一方、ポリスチレンやポリエステル等の溶剤可溶性を有するフィルムに対しては、接着液として、これらの樹脂を溶解させうる接着(溶着)溶剤が使用され、具体的には、テトラヒドロフラン、ジオキソラン等の環状エーテル系溶剤や、各種混合溶剤(OPS溶剤)が用いられる。これらの接着溶剤を用いる場合には、原反フィルム2に接着溶剤を塗布した後、乾燥させることなく筒貼り部に供給することとなるため、塗布層検知装置6は液状の塗布層を検知する位置に配置される。   For the olefin film having solvent resistance such as polyethylene and polypropylene as the adhesive liquid, polyurethane resin adhesive, polyamide resin adhesive, polyacrylic resin adhesive, polyvinyl acetate resin adhesive, Adhesives such as cellulose resin adhesives and epoxy resin adhesives are used. When these adhesives are used, the applied adhesive may be dried by disposing a drying device downstream of the coating device 3. In that case, the coating layer detection device 6 may be disposed at a position where the coating layer before drying is detected, but it is more likely that the coating layer detection device 6 vibrates the raw film 2 if it is disposed at a position where the coating layer after drying is detected. Even if there is, there is no possibility that the adhesive of the coating layer is scattered, and therefore, the detection part of the coating layer detection device is not contaminated with the adhesive, which is preferable. On the other hand, for films having solvent solubility such as polystyrene and polyester, an adhesive (welding) solvent capable of dissolving these resins is used as an adhesive solution. Specifically, cyclic ethers such as tetrahydrofuran and dioxolane are used. A solvent and various mixed solvents (OPS solvent) are used. In the case of using these adhesive solvents, since the adhesive solvent is applied to the raw film 2 and then supplied to the cylinder pasting portion without drying, the coating layer detection device 6 detects the liquid coating layer. Placed in position.

塗布層検知装置6は、連続的に走行している原反フィルム2の塗布層形成領域にレーザ光照射し、その領域にある塗布層4の厚みを測定するレーザ変位計11を備えている。レーザ変位計11は、測定対象に対向配置され、レーザ光を照射すると共に測定対象からの反射光を受光するセンサヘッド11aと、そのセンサヘッド11aを制御すると共にそのセンサヘッド11aの出力から測定対象の位置や厚みを演算して求めるコントローラ(又はアンプユニット)11bを備えており、図2に拡大して示すように、原反フィルム2の上に塗布層4が存在している場合、レーザ光を利用して原反フィルム2の表面位置と塗布層4の表面位置を同時に計測し、両者間の距離から塗布層4の厚みを求める機能を備えている。レーザ変位計11には、塗布層4の厚みを測定可能であれば、その測定方式には限定されず、種々のものを、例えば、レーザフォーカス方式やCCDレーザ式などのを用いることができる。ここで、レーザフォーカス方式のレーザ変位計は、半導体レーザを使用して、共焦点方式により測定対象までの距離を測定する方式のものであり、例えば、センサヘッド11aとして株式会社シーエンス製のLT−8110、コントローラ11bとして株式会社シーエンス製のLT−8100を例示できる。また、CCDレーザ式のレーザ変位計は、赤色半導体レーザを使用して、三角測距+CCD/LFTC方式により測定対象までの変位量を測定する方式のものであり、例えば、センサヘッド11aとして株式会社シーエンス製のLK−010、アンプユニット11bとして株式会社シーエンス製のLK−3100を例示できる。なお、塗布層を検知する位置には、検知対象となる原反フィルム2の位置を安定させるため、支持ローラ14が設けられており、原反フィルム2の、支持ローラ14で支持されている領域に対して塗布層検知が行われる。   The coating layer detection device 6 includes a laser displacement meter 11 that irradiates a coating layer forming region of the raw film 2 that is continuously running with laser light and measures the thickness of the coating layer 4 in the region. The laser displacement meter 11 is disposed to face the measurement target, irradiates the laser beam and receives the reflected light from the measurement target, and controls the sensor head 11a and outputs the measurement target from the sensor head 11a. When the coating layer 4 is present on the raw film 2 as shown in an enlarged view in FIG. 2, a laser beam is provided. Is used to simultaneously measure the surface position of the raw film 2 and the surface position of the coating layer 4 and obtain the thickness of the coating layer 4 from the distance between them. As long as the thickness of the coating layer 4 can be measured, the laser displacement meter 11 is not limited to the measurement method, and various types such as a laser focus method and a CCD laser method can be used. Here, the laser displacement meter of the laser focus method is a method of measuring a distance to a measurement object by a confocal method using a semiconductor laser. For example, as a sensor head 11a, LT-manufactured by Cienence Co., Ltd. As an example of the controller 11b, LT-8100 manufactured by Cienence Corporation can be exemplified. In addition, the CCD laser type laser displacement meter uses a red semiconductor laser to measure the amount of displacement up to the measurement object by the triangulation + CCD / LFTC method. Examples of the LK-010 manufactured by SCIENCE and the LK-3100 manufactured by SCIENCE CO., LTD. In addition, in order to stabilize the position of the original film 2 to be detected at the position where the coating layer is detected, a support roller 14 is provided, and the area of the original film 2 supported by the support roller 14 The coating layer detection is performed on.

塗布層検知装置6は、更に、レーザ変位計11による測定結果から塗布層の有無を判定する判定回路13も備えている。この判定回路13は、レーザ変位計11が測定した塗布層4の厚みがあらかじめ設定した値(しきい値)以上であるか否かを判断して、適正な塗布層が有るか否かを判断する。ここで、しきい値としては、筒貼りに必要な接着強度を確保しうる最低厚みとしておけばよく、これにより、筒貼りに必要な接着強度を確保しうる正常な塗布層が有るか否かを判断できる。このしきい値は、筒貼りに用いる接着液の種類、厚み測定時の塗布層の状態(液状のままか、乾燥した状態かなど)などによって異なるので、使用する接着液の種類、厚み測定時の塗布層の状態等に応じて、適正に設定すればよい。   The coating layer detection device 6 further includes a determination circuit 13 that determines the presence / absence of a coating layer from the measurement result of the laser displacement meter 11. The determination circuit 13 determines whether or not the thickness of the coating layer 4 measured by the laser displacement meter 11 is equal to or greater than a preset value (threshold value), and determines whether or not there is an appropriate coating layer. To do. Here, the threshold value may be set to the minimum thickness that can secure the adhesive strength necessary for cylinder sticking, and whether or not there is a normal coating layer that can secure the adhesive strength necessary for cylinder sticking. Can be judged. This threshold value varies depending on the type of adhesive liquid used for sticking the cylinder and the state of the coating layer at the time of thickness measurement (whether in the liquid state or in the dry state). What is necessary is just to set appropriately according to the state of the coating layer of this.

塗布層検知装置6は、更に、上記した厚み測定及び塗布層有無判定動作を一定周期で継続して実施する機能を備えている。ここで上記動作を実施する周期は短い程、原反フィルムにおける検査位置の長手方向のピッチを短くできるので好ましいが、検査機器上の制約もあるので、1/30秒程度とするのが良い。また、塗布層検知装置6は、検査結果を記憶する機能を備えると共に必要に応じ、プリンタを介して検査結果を印字出力する機能も備えている。更に、図1には図示を省略しているが、巻取部8の前に走行中の原反フィルム2に識別用のテープ、例えば金属テープを付与し、貼り付けるテープ付与装置が設けられている。前記塗布層検知装置6は検知の結果、不良と判断した場合にはその結果をテープ付与装置に出力する機能も備えており、テープ付与装置はその情報に基づき、塗布層が無いと検知された部分に識別用のテープを貼り付ける。   The coating layer detection device 6 further has a function of continuously performing the above-described thickness measurement and coating layer presence / absence determination operations at a constant period. Here, it is preferable that the period for performing the above operation is short because the pitch in the longitudinal direction of the inspection position in the raw film can be shortened. However, since there are restrictions on inspection equipment, it is preferable to set the period to about 1/30 seconds. In addition, the coating layer detection device 6 has a function of storing the inspection result, and also has a function of printing out the inspection result via a printer as necessary. Further, although not shown in FIG. 1, there is provided a tape applying device for applying an identification tape, for example, a metal tape, to the original film 2 that is running in front of the winding unit 8 and attaching the tape. Yes. The coating layer detection device 6 also has a function of outputting the result to the tape applying device when it is determined as a result of detection, and the tape applying device is detected based on the information that there is no coating layer. Affix the identification tape to the part.

図3は、レーザ変位計11のセンサヘッド11aを筒貼り装置に取り付けるための具体的な機構の1例である取付装置30を示すものである。取付装置30は、筒貼り装置の両側のフレーム31に取り付けられた一対の側板32と、その一対の側板32に、支持ローラ14に平行に取り付けられた一対のガイドロッド33と、そのガイドロッド33に移動可能に保持された移動台34と、その移動台34を水平に移動させて位置調整を行うためのねじ軸36及びハンドル37と、移動台34に垂直に移動可能に保持された昇降台41と、その昇降台41を昇降させるためのねじ軸42、ハンドル43及びねじ軸42を回転自在に保持する軸受台44と、昇降台41に取り付けられたヘッド支持台46を備えており、そのヘッド支持台46にセンサヘッド11aが取り付けられている。この構造としたことにより、センサヘッド11aの高さ方向の位置をハンドル43を回転させて調整することができ、また、センサヘッド11aの幅方向の位置をハンドル37を回転させて調整することができ、センサヘッド11aの位置決めを容易に実施できる。   FIG. 3 shows an attachment device 30 which is an example of a specific mechanism for attaching the sensor head 11a of the laser displacement meter 11 to the tube sticking device. The attachment device 30 includes a pair of side plates 32 attached to the frames 31 on both sides of the cylinder pasting device, a pair of guide rods 33 attached to the pair of side plates 32 in parallel to the support roller 14, and the guide rods 33. A movable table 34 movably held by the movable table 34, a screw shaft 36 and a handle 37 for adjusting the position by moving the movable table 34 horizontally, and a lifting table movably held vertically by the movable table 34. 41, a screw shaft 42 for raising and lowering the elevator base 41, a handle 43 and a bearing base 44 for rotatably holding the screw shaft 42, and a head support base 46 attached to the elevator base 41, The sensor head 11 a is attached to the head support base 46. With this structure, the height direction position of the sensor head 11a can be adjusted by rotating the handle 43, and the width direction position of the sensor head 11a can be adjusted by rotating the handle 37. It is possible to easily position the sensor head 11a.

次に、上記構成の筒貼り装置における筒貼り動作及び塗布層検査動作を説明する。図1において、原反フィルム2が巻取2Aから引き出され、連続的に走行し、その端部に塗布装置3によって接着液が塗布され、次いで、塗布層検知装置6を通った後、筒貼りされ、巻取2Bとして巻き取られてゆく。この動作中、塗布層検知装置6がその下を通過中の原反フィルム2に適正な塗布層4があるか否かを一定周期で、例えば、1/30秒周期で連続的に監視している。すなわち、レーザ変位計11が、原反フィルム2の、センサヘッド11aの下を通過している領域に存在しているであろう塗布層4の厚みを測定し、それを所定のしきい値と比較することで、適正な厚みの塗布層4があるか否かを検査する動作を一定周期で繰り返しており、その結果を記憶部に蓄積している。そして、不良と判断した場合にはその結果を、下流に設けているテープ付与装置(図示せず)に出力し、テープ付与装置はその情報に基づき、塗布層が無いと検知された部分に識別用のテープを貼り付ける。かくして、塗布層検知装置6に記憶している検査結果を適当なタイミングでモニターに表示させたり、プリントアウトすることで、不良があったか否かを認識することができ、また、作製された筒貼りフィルムの巻取を後工程で巻き返す際に識別用のテープを監視することで、不良個所を容易に特定して必要な処理を施すことができる。   Next, a cylinder pasting operation and a coating layer inspection operation in the cylinder pasting apparatus having the above configuration will be described. In FIG. 1, the raw film 2 is pulled out from the winding 2 </ b> A, continuously runs, and an adhesive liquid is applied to the end portion thereof by the coating device 3, and then passes through the coating layer detection device 6, and then is attached to the cylinder. Then, it is wound up as winding 2B. During this operation, the coating layer detecting device 6 continuously monitors whether or not the appropriate coating layer 4 is present on the raw film 2 passing underneath, at a constant cycle, for example, at a cycle of 1/30 seconds. Yes. That is, the laser displacement meter 11 measures the thickness of the coating layer 4 that will be present in the region of the raw film 2 that passes under the sensor head 11a, and sets the thickness to a predetermined threshold value. By comparing, the operation | movement which test | inspects whether the application layer 4 of appropriate thickness exists is repeated with a fixed period, The result is accumulate | stored in the memory | storage part. If it is determined to be defective, the result is output to a tape applying device (not shown) provided downstream, and the tape applying device identifies the portion detected as having no coating layer based on the information. Affix the tape. Thus, it is possible to recognize whether there is a defect by displaying the inspection result stored in the coating layer detection device 6 on a monitor or printing out at an appropriate timing. By monitoring the identification tape when the film is rewound in a subsequent process, it is possible to easily identify a defective portion and perform necessary processing.

[実施例1]
(1)使用装置
塗布層検知装置6に用いるレーザ変位計11として、次のレーザフォーカス方式のレーザ変位計を用いた。
コントローラ: 株式会社シーエンス製LT−8100
センサヘッド: 株式会社シーエンス製LT−8110
塗布層有無を判断するためのしきい値を、7μmに設定した。
(2)前処理
ストレッチラベル用PEフィルム(厚さ80μm)(商品名DMT−HU2、大日本樹脂株式会社製)の処理側にグラビア印刷インキを施し、ラベルを構成する寸法にデザインを印刷した。その後スリッターで各ラベル展開寸法幅に切り出し、スリーブ状に筒貼りする前段階のフィルム巻取を作製した。
(3)筒貼り
前記したフィルム巻取を筒貼り装置にセットし、そのフィルム巻取から原反フィルムを連続的に引き出し、印刷層が内面となるようにフィルム両端部を重ね合わせる前のフィルム片端部へウレタン接着剤を約3mm幅に塗布し、筒貼りを行った後、巻き取り、連続した形態のストレッチラベルの巻取を作製した。また、ウレタン接着剤を塗布した直後の位置で塗布層検知装置6によって塗布状態を1/30秒周期で監視した。この時のフィルムの走行速度は100m/分とした。
(4)監視結果
フィルム約1000mを処理したが、その間、塗布層検知装置6は不良を示すことはなかった。また、塗布層の厚み測定結果を適当な周期で取り出して見たところ、15〜20μmの範囲内に入っており、十分な厚みを有していた。
そこで、故意に接着剤塗布を約0.5秒停止したところ、塗布層検知装置6が直ちに反応して不良と検知した。この時の厚み測定値は、1〜3μm程度であった。また、故意にかすれ状態を作ったところ、塗布層検知装置6が直ちに反応して不良と検知した。この時の厚み測定値は、3〜5μm程度に過ぎないものであった。
従って、塗布層検知装置6は、接着剤塗布における慢性的な液抜けや塗布のかすれ等に対して感度良く反応し、正規の塗布状態及び塗布量を継続的に監視することができことを確認できた。
その後、正常と判断された筒貼り済のストレッチラベルの巻取をラベル装着機にセットし、枚葉に切り出し、ポリエチレンテレフタレート製ボトル胴部の外周表面に密着させたところ、安定で美麗に装着でき、脱落、剥がれなどの事故が発生しなかった。従って、塗布層検知装置6による監視結果は十分信頼できるものであることを確認できた。
[Example 1]
(1) Device Used As the laser displacement meter 11 used in the coating layer detection device 6, the following laser focus type laser displacement meter was used.
Controller: LT-8100 manufactured by Cienence
Sensor head: LT-8110 made by Cienence
The threshold value for judging the presence or absence of the coating layer was set to 7 μm.
(2) Pretreatment Gravure printing ink was applied to the processing side of the PE film for stretch label (thickness 80 μm) (trade name DMT-HU2, manufactured by Dainippon Resin Co., Ltd.), and the design was printed in the dimensions constituting the label. Thereafter, the film was cut into a width of each label development with a slitter, and a film take-up of the previous stage was formed in which a cylinder was pasted into a sleeve shape.
(3) Tube sticking Set the above-described film take-up into a tube sticking device, draw the original film continuously from the film take-up, and end one end of the film before overlapping the film so that the printed layer becomes the inner surface. After applying a urethane adhesive to the part to a width of about 3 mm and sticking a cylinder, it was wound up, and a stretch label was wound in a continuous form. Moreover, the application state was monitored with the period of 1/30 second by the application layer detection apparatus 6 in the position immediately after apply | coating a urethane adhesive. The running speed of the film at this time was 100 m / min.
(4) Monitoring result Although about 1000 m of films were processed, the coating layer detection apparatus 6 did not show a defect in the meantime. Moreover, when the thickness measurement result of the coating layer was taken out at an appropriate period and viewed, it was within the range of 15 to 20 μm and had a sufficient thickness.
Therefore, when the adhesive application was intentionally stopped for about 0.5 seconds, the coating layer detection device 6 immediately reacted and detected a defect. The thickness measured at this time was about 1 to 3 μm. Further, when a faint state was intentionally created, the coating layer detecting device 6 reacted immediately and detected a defect. At this time, the measured thickness was only about 3 to 5 μm.
Therefore, it is confirmed that the coating layer detecting device 6 reacts with high sensitivity to chronic liquid dropout or faint coating in the adhesive coating, and can continuously monitor the regular coating state and the coating amount. did it.
After that, when the take-up of the stretched label attached to the cylinder, which was judged to be normal, was set in a label attaching machine, cut into a sheet, and brought into close contact with the outer peripheral surface of the polyethylene terephthalate bottle body, it was possible to attach it stably and beautifully. There were no accidents such as falling off or peeling off. Therefore, it was confirmed that the monitoring result by the coating layer detection device 6 was sufficiently reliable.

[実施例2]
(1)使用装置
塗布層検知装置6として実施例1と同一のものを用意した。
(2)前処理
シュリンクラベル用OPSフィルム(厚さ60μm)(商品名:EPS45T、シーアイ化成株式会社製)の処理側にグラビア印刷インキを施し、ラベルを構成する寸法にデザインを印刷した。その後スリッターで各ラベル展開寸法幅に切り出し、スリーブ状に筒貼りする前段階のフィルム巻取を作製した。
(3)筒貼り
前記したフィルム巻取を筒貼り装置にセットし、そのフィルム巻取から原反フィルムを連続的に引き出し、印刷層が内面となるようにフィルム両端部を重ね合わせる前のフィルム片端部へ溶着溶剤(OPS溶剤:酢酸メチル、シクロヘキサン、メタノール)を約3mm幅に塗布し、筒貼りを行った後、巻き取り、連続した形態のシュリンクラベルの巻取を作製した。また、溶着溶剤を塗布した直後の位置で塗布層検知装置6によって塗布状態を1/30秒周期で監視した。この時のフィルムの走行速度は100m/分とした。
(4)監視結果
フィルム約1000mを処理したが、その間、塗布層検知装置6は不良を示すことはなかった。また、塗布層の厚み測定結果を適当な周期で取り出して見たところ、10〜15μmの範囲内に入っており、十分な厚みを有していた。
そこで、故意に接着剤塗布を約0.5秒停止したところ、塗布層検知装置6が直ちに反応して不良と検知した。この時の厚み測定値は、0〜2μm程度であった。また、故意にかすれ状態を作ったところ、塗布層検知装置6が直ちに反応して不良と検知した。この時の厚み測定値は、2〜4μm程度に過ぎないものであった。
従って、塗布層検知装置6は、溶着溶剤塗布においても、慢性的な液抜けや塗布のかすれ等に対して感度良く反応し、正規の塗布状態及び塗布量を継続的に監視することができることを確認できた。
その後、正常と判断された筒貼り済のシュリンクラベルの巻取をラベル装着機にセットし、枚葉に切り出し、ポリエチレンテレフタレート製ボトル胴部の外周表面に密着(熱収縮)させたところ、安定で美麗に装着でき、脱落、剥がれなどの事故が発生しなかった。従って、塗布層検知装置6による監視結果は十分信頼できるものであることを確認できた。
[Example 2]
(1) Device Used The same coating layer detector 6 as that of Example 1 was prepared.
(2) Pretreatment The gravure printing ink was applied to the processing side of the OPS film for shrink labels (thickness 60 μm) (trade name: EPS45T, manufactured by CI Kasei Co., Ltd.), and the design was printed to the dimensions constituting the label. Thereafter, the film was cut into a width of each label development with a slitter, and a film take-up of the previous stage was formed in which a cylinder was pasted into a sleeve shape.
(3) Tube sticking Set the above-described film take-up into a tube sticking device, draw the original film continuously from the film take-up, and end one end of the film before overlapping the film so that the printed layer becomes the inner surface. A welding solvent (OPS solvent: methyl acetate, cyclohexane, methanol) was applied to the part to a width of about 3 mm, and the tube was pasted, and then wound up to produce a continuous shrink label. In addition, the coating state was monitored at a period of 1/30 seconds by the coating layer detection device 6 at a position immediately after coating the welding solvent. The running speed of the film at this time was 100 m / min.
(4) Monitoring result Although about 1000 m of films were processed, the coating layer detection apparatus 6 did not show a defect in the meantime. Moreover, when the thickness measurement result of the coating layer was taken out and observed at an appropriate cycle, it was within the range of 10 to 15 μm and had a sufficient thickness.
Therefore, when the adhesive application was intentionally stopped for about 0.5 seconds, the coating layer detection device 6 immediately reacted and detected a defect. The thickness measured at this time was about 0 to 2 μm. Further, when a faint state was intentionally created, the coating layer detecting device 6 reacted immediately and detected a defect. The thickness measured at this time was only about 2 to 4 μm.
Therefore, the coating layer detection device 6 can react with high sensitivity to chronic liquid dropout, faint coating, etc. even in welding solvent coating, and can continuously monitor the regular coating state and coating amount. It could be confirmed.
After that, when the roll of the shrink-bonded cylinder label that was judged to be normal was set on a label mounting machine, cut into single sheets, and tightly adhered (heat-shrinked) to the outer peripheral surface of the polyethylene terephthalate bottle body, it was stable. Attached beautifully, no accidents such as dropping off or peeling off. Therefore, it was confirmed that the monitoring result by the coating layer detection device 6 was sufficiently reliable.

[実施例3]
(1)使用装置
塗布層検知装置6として実施例1と同一のものを用意した。
(2)前処理
シュリンクラベル用PETフィルム(厚さ45μm)(商品名:S7504、東洋紡株式会社製)の処理側にグラビア印刷インキを施し、ラベルを構成する寸法にデザインを印刷した。その後スリッターで各ラベル展開寸法幅に切り出し、スリーブ状に筒貼りする前段階のフィルム巻取を作製した。
(3)筒貼り
前記したフィルム巻取を筒貼り装置にセットし、そのフィルム巻取から原反フィルムを連続的に引き出し、印刷層が内面となるようにフィルム両端部を重ね合わせる前のフィルム片端部へ溶着溶剤(THF:テトラヒドロフラン)を約3mm幅に塗布し、筒貼りを行った後、巻き取り、連続した形態のシュリンクラベルの巻取を作製した。また、溶着溶剤を塗布した直後の位置で塗布層検知装置6によって塗布状態を1/30秒周期で監視した。この時のフィルムの走行速度は100m/分とした。
(4)監視結果
フィルム約1000mを処理したが、その間、塗布層検知装置6は不良を示すことはなかった。また、塗布層の厚み測定結果を適当な周期で取り出して見たところ、10〜15μmの範囲内に入っており、十分な厚みを有していた。
そこで、故意に接着剤塗布を約0.5秒停止したところ、塗布層検知装置6が直ちに反応して不良と検知した。この時の厚み測定値は、0〜2μm程度であった。また、故意にかすれ状態を作ったところ、塗布層検知装置6が直ちに反応して不良と検知した。この時の厚み測定値は、2〜4μm程度に過ぎないものであった。
従って、塗布層検知装置6は、溶着溶剤塗布においても、慢性的な液抜けや塗布のかすれ等に対して感度良く反応し、正規の塗布状態及び塗布量を継続的に監視することができることを確認できた。
その後、正常と判断された筒貼り済のシュリンクラベルの巻取をラベル装着機にセットし、枚葉に切り出し、ポリエチレンテレフタレート製ボトル胴部の外周表面に密着(熱収縮)させたところ、安定で美麗に装着でき、脱落、剥がれなどの事故が発生しなかった。従って、塗布層検知装置6による監視結果は十分信頼できるものであることを確認できた。
[Example 3]
(1) Device Used The same coating layer detector 6 as that of Example 1 was prepared.
(2) Pretreatment Gravure printing ink was applied to the treatment side of a PET film for shrink label (thickness: 45 μm) (trade name: S7504, manufactured by Toyobo Co., Ltd.), and the design was printed to the dimensions constituting the label. Thereafter, the film was cut into a width of each label development with a slitter, and a film take-up of the previous stage was formed in which a cylinder was pasted into a sleeve shape.
(3) Tube sticking Set the film take-up described above in a tube sticking device, draw the raw film continuously from the film take-up, and end one end of the film before overlapping the film so that the printed layer becomes the inner surface. A welding solvent (THF: tetrahydrofuran) was applied to the part to a width of about 3 mm, and the tube was pasted, and then wound up to produce a continuous form of shrink label. In addition, the coating state was monitored at a period of 1/30 seconds by the coating layer detection device 6 at a position immediately after coating the welding solvent. The running speed of the film at this time was 100 m / min.
(4) Monitoring result Although about 1000 m of films were processed, the coating layer detection apparatus 6 did not show a defect in the meantime. Moreover, when the thickness measurement result of the coating layer was taken out and observed at an appropriate cycle, it was within the range of 10 to 15 μm and had a sufficient thickness.
Therefore, when the adhesive application was intentionally stopped for about 0.5 seconds, the coating layer detection device 6 immediately reacted and detected a defect. The thickness measured at this time was about 0 to 2 μm. Further, when a faint state was intentionally created, the coating layer detecting device 6 reacted immediately and detected a defect. The thickness measured at this time was only about 2 to 4 μm.
Therefore, the coating layer detection device 6 can react with high sensitivity to chronic liquid dropout, faint coating, etc. even in welding solvent coating, and can continuously monitor the regular coating state and coating amount. It could be confirmed.
After that, when the roll of the shrink-bonded cylinder label that was judged to be normal was set on a label mounting machine, cut into single sheets, and tightly adhered (heat-shrinked) to the outer peripheral surface of the polyethylene terephthalate bottle body, it was stable. Attached beautifully, no accidents such as dropping off or peeling off. Therefore, it was confirmed that the monitoring result by the coating layer detection device 6 was sufficiently reliable.

塗布層検知装置を組み込んだ筒貼り装置の概略構成を示す模式図Schematic diagram showing the schematic configuration of a cylinder pasting device incorporating a coating layer detection device レーザ変位計により塗布層の厚さを測定する原理を説明する図Diagram explaining the principle of measuring the thickness of the coating layer with a laser displacement meter 塗布層検知装置のセンサヘッドを筒貼り装置に取り付けるための取付装置の概略正面図Schematic front view of an attachment device for attaching the sensor head of the coating layer detection device to the cylinder pasting device

符号の説明Explanation of symbols

1 給紙部
2 原反フィルム
2A 原反フィルムの巻取
2B 筒貼りしたフィルムの巻取
3 塗布装置
4 塗布層
6 塗布層検知装置
7 筒貼り部
8 巻取部
11 レーザ変位計
11a センサヘッド
11b コントローラ
13 判定回路
14 支持ローラ
DESCRIPTION OF SYMBOLS 1 Paper feeding part 2 Original film 2A Winding of original film 2B Winding of the film stuck on the cylinder 3 Coating device 4 Coating layer 6 Coating layer detection apparatus 7 Cylindrical bonding part 8 Winding part 11 Laser displacement meter 11a Sensor head 11b Controller 13 Judgment circuit 14 Support roller

Claims (6)

連続的に走行している原反フィルムの塗布層形成領域にレーザ変位計にてレーザ光照射し、その領域にある塗布層の厚みを測定する工程と、その結果から塗布層の有無を判定する工程とを有する塗布層検知方法。   A laser displacement meter is used to irradiate the coating layer forming area of the continuously running raw film with a laser displacement meter, and the thickness of the coating layer in that area is measured, and the presence or absence of the coating layer is determined from the result. A coating layer detecting method comprising: a step. 原反フィルムの巻取から原反フィルムを引き出し、連続的に走行させながら、該原反フィルムの端部に接着液を連続的に塗布する工程と、塗布によって形成した塗布層の有無を請求項1に記載の塗布層検知方法によって検知する工程と、原反フィルムの両端部を重ね合わせ、その重合部を接合して筒状とする筒貼り工程と、筒貼りしたフィルムを巻き取る巻取り工程とを有する筒貼り方法。   The step of continuously applying an adhesive liquid to the end of the original film while drawing the original film from the winding of the original film and continuously running, and the presence or absence of a coating layer formed by application The step of detecting by the coating layer detection method according to 1; the cylinder pasting step in which both end portions of the raw film are overlapped and the overlapping portions are joined to form a cylinder; and the winding step of winding the cylinder pasted film A cylinder pasting method comprising: 更に、塗布層が無いと検知された部分に識別用のテープを付与する工程を有することを特徴とする請求項2記載の筒貼り方法。   The cylinder pasting method according to claim 2, further comprising a step of applying an identification tape to a portion detected as having no coating layer. 連続的に走行している原反フィルムの塗布層形成領域にレーザ光照射し、その領域にある塗布層の厚みを測定するレーザ変位計と、該レーザ変位計による測定結果から塗布層の有無を判定する手段とを有する塗布層検知装置。   A laser displacement meter that irradiates the coating layer forming region of the continuously running raw film with laser light and measures the thickness of the coating layer in the region, and the presence or absence of the coating layer from the measurement result by the laser displacement meter A coating layer detecting device having means for determining. 原反フィルムの巻取をセットし、その巻取から原反フィルムを繰り出す給紙部と、連続的に走行中の原反フィルムの端部に接着液を連続的に塗布する塗布装置と、該塗布装置の下流に設けられ、該塗布装置によって原反フィルムの端部に形成した塗布層の有無を検知する請求項4に記載の塗布層検知装置と、その下流に配置され、原反フィルムの両端部を重ね合わせ、その重合部を接合して筒状とする筒貼り部と、筒貼りしたフィルムを巻き取る巻取部とを有する筒貼り装置。   A paper feeding unit for setting the winding of the raw film and feeding the raw film from the winding; a coating device for continuously applying an adhesive liquid to the end of the running raw film; The coating layer detection device according to claim 4, which is provided downstream of the coating device and detects the presence or absence of a coating layer formed at an end of the raw film by the coating device, and disposed downstream of the coating layer detection device. A cylinder pasting apparatus having a cylinder pasting portion that overlaps both end portions and joins the overlapping portions to form a cylinder, and a winding unit that winds the film pasted on the cylinder. 更に、筒貼り部の下流に、前記塗布層検知装置によって塗布層が無いと検知された部分に識別用のテープを付与するテープ付与装置を有することを特徴とする請求項5記載の筒貼り装置。   6. The cylinder sticking device according to claim 5, further comprising a tape applying device for applying an identification tape to a portion detected by the coating layer detecting device as having no coating layer downstream of the tube sticking portion. .
JP2004038897A 2004-02-16 2004-02-16 Coating layer detection method and device and cylindrical sticking method and device using it Pending JP2005224779A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007101402A (en) * 2005-10-05 2007-04-19 Shin Etsu Polymer Co Ltd Tackiness and thickness measuring instrument and measuring method using it
KR20220053053A (en) * 2020-01-20 2022-04-28 타나카 세이미츠 코교 가부시키가이샤 Adhesive applying device and manufacturing apparatus for laminated iron core having the adhesive applying device, and method for manufacturing the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007101402A (en) * 2005-10-05 2007-04-19 Shin Etsu Polymer Co Ltd Tackiness and thickness measuring instrument and measuring method using it
JP4566107B2 (en) * 2005-10-05 2010-10-20 信越ポリマー株式会社 Adhesive force / thickness measuring apparatus and measuring method thereof
KR20220053053A (en) * 2020-01-20 2022-04-28 타나카 세이미츠 코교 가부시키가이샤 Adhesive applying device and manufacturing apparatus for laminated iron core having the adhesive applying device, and method for manufacturing the same
KR102466336B1 (en) * 2020-01-20 2022-11-14 타나카 세이미츠 코교 가부시키가이샤 Adhesive applicator and laminated iron core manufacturing device having the adhesive applicator and manufacturing method thereof

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