JP2006082388A - Apparatus for producing tubular film - Google Patents

Apparatus for producing tubular film Download PDF

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JP2006082388A
JP2006082388A JP2004269436A JP2004269436A JP2006082388A JP 2006082388 A JP2006082388 A JP 2006082388A JP 2004269436 A JP2004269436 A JP 2004269436A JP 2004269436 A JP2004269436 A JP 2004269436A JP 2006082388 A JP2006082388 A JP 2006082388A
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film
roller
folding
downstream
bonding
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JP4623632B2 (en
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Yuichiro Kato
Jun Mikami
純 三上
加藤  雄一郎
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Toyo Seikan Kaisha Ltd
東洋製罐株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for producing a tubular film the inner and outer surfaces of which are prevented from being scratched and which can prevent bubbles from being caught between piled parts. <P>SOLUTION: By regulating a folding width by making the inner surface of a lengthy film 11 be pressed by a folding roller 14, the occurrence of a scratch which happens in the case of a fixed working plate is prevented. On both downstream sides in the feed direction of the folding roller 14, V-groove rollers 16 are set, and both edge folding parts are pressed from both sides, respectively. By maintaining the folding width, the occurrence of a scratch, which happens when a roller crossing the conveyance direction contacting on a film surface is used, is prevented, and the tubular film 12 is produced accurately. Moreover, by installing sticking rollers 19 adjacently on the downstream side in the feed direction of an application nozzle 18, the occurrence of a solvent attack etc., is prevented by pressing immediately after the application of a sticking agent to eliminate the intervention of bubbles, and the whitening thereby is also prevented. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は筒状フィルムの製造装置に関し、ペットボトルなどの容器に加熱収縮させて装着される印刷などが施された熱収縮性ラベルをフィルムから筒状に製造する場合の折径精度の向上、擦り傷の防止および重ね部の白化を防止できるようにしたものである。   The present invention relates to an apparatus for manufacturing a cylindrical film, and it is possible to improve the folding accuracy when manufacturing a heat-shrinkable label, which has been subjected to printing that is heat-shrinked to a container such as a PET bottle, from a film to a cylinder, It is intended to prevent scratches and whitening of the overlapped portion.
従来から清涼飲料水などが充填されたペットボトルなどの容器には、長尺状の熱収縮性のフィルムの内面に印刷などを施したのち、このフィルムの両縁部を折り返し、重ねた部分を貼り合せて筒状にした筒状フィルムを作り、これを切断した熱収縮性ラベル(シュリンクラベル)を加熱収縮させて装着することが一般に行われている。   Conventionally, containers such as plastic bottles filled with soft drinks have been printed on the inner surface of a long heat-shrinkable film. It is generally performed to make a tubular film that is bonded to form a tubular film, and to heat-shrink and attach a heat-shrinkable label (shrink label) cut from the film.
このような長尺状のフィルムから筒状のフィルムを製造する装置として、例えば図3に示す特許文献1に開示された折畳み接着装置1では、搬送機構2として長尺状のフィルム3を案内する上下一対のガイドローラ2aと、接着後の筒状フィルム3を引っ張りながら搬送する上下一対のニップローラ2bとを設けて搬送するようにし、これら搬送機構2a,2bの途中に作業プレート4を配置し、その下側から長尺状のフィルム3を巻き掛け、折畳み機構5を構成する左右一対の搬送方向に傾けた2組のローラ5a、5bを設けてフィルム表面に接触させて両縁部を引き寄せるようにし、折り返した重ね部3aに接着剤をノズル6で塗布したのち押さえ板7で押えて接着するようにしている。
また、同様な筒状フィルムの製造装置が種々提案されており、例えば特許文献2、3などを挙げることができる。
実開昭58−121802号公報 特開平8−2512号公報 特開平8−337219号公報
As an apparatus for producing a cylindrical film from such a long film, for example, in the folding bonding apparatus 1 disclosed in Patent Document 1 shown in FIG. 3, the long film 3 is guided as the transport mechanism 2. A pair of upper and lower guide rollers 2a and a pair of upper and lower nip rollers 2b for conveying the bonded tubular film 3 while pulling it are provided for conveyance, and a work plate 4 is disposed in the middle of these conveyance mechanisms 2a and 2b. A long film 3 is wound from the lower side, and two pairs of rollers 5a and 5b that are inclined in a pair of left and right conveying directions constituting the folding mechanism 5 are provided so as to be brought into contact with the film surface and draw both edges. Then, an adhesive is applied to the folded overlapping portion 3a by the nozzle 6, and then pressed by the pressing plate 7 to be bonded.
Various similar tubular film manufacturing apparatuses have been proposed, such as Patent Documents 2 and 3.
Japanese Utility Model Publication No. 58-121802 JP-A-8-2512 JP-A-8-337219
このような筒状フィルムの製造装置では、長尺状のフィルム3を作業プレート4の下側に供給し、搬送方向に対して傾けたローラ5a,5bを接触させて両縁部を引き寄せるようにして筒状に折り重ねるため、フィルム3の内面と作業プレート4とが擦れるため、フィルム3の内面に傷が付き易く、通常、フィルム内面に印刷を施すことから印刷面に傷が付くという問題がある。   In such a cylindrical film manufacturing apparatus, the long film 3 is supplied to the lower side of the work plate 4 and the rollers 5a and 5b inclined with respect to the transport direction are brought into contact with each other so as to draw both edges. Since the inner surface of the film 3 and the work plate 4 rub against each other because they are folded into a cylindrical shape, the inner surface of the film 3 is easily damaged. Usually, printing is performed on the inner surface of the film, so that the printed surface is damaged. is there.
また、フィルム3の両縁部を重ねて筒状にする必要から搬送方向に対して傾けたローラ5a,5bを接触させて引き寄せるようにしているため、フィルム3の搬送方向と交差する方向に転動するこれらのローラ5a,5bによってもフィルム3の外面に擦り跡が入るという問題がある。   In addition, since both edges of the film 3 need to be overlapped to form a cylinder, the rollers 5a and 5b inclined with respect to the transport direction are brought into contact with each other, so that the film 3 rolls in a direction crossing the transport direction of the film 3. There is also a problem that rubbing marks enter the outer surface of the film 3 by these moving rollers 5a and 5b.
さらに、筒状のフィルム3に重ねられた重ね部3aを貼り合せる場合に、重ね部3aの一方に接着用の溶剤を塗布するとフィルム表面に溶剤アタックにより凹凸状の縮みができ、他方のフィルムを重ねて接着すると、この部分に無数の気泡が挟まって白化する場合があり、使用できる溶剤の配合範囲が狭くなるなどの問題もある。   Furthermore, when laminating the overlapping portion 3a overlaid on the cylindrical film 3, if a solvent for adhesion is applied to one of the overlapping portions 3a, the surface of the film can be unevenly compressed by a solvent attack. If the layers are bonded together, innumerable bubbles may be sandwiched in this portion to cause whitening, and there is a problem that the range of usable solvents becomes narrow.
この発明は、上記従来技術の課題に鑑みてなされたもので、フィルム内面や外面に擦り傷などが発生せず、さらに重ね部に気泡が挟まることを防止できる筒状フィルムの製造装置を提供しようとするものである。   The present invention has been made in view of the above-described problems of the prior art, and is intended to provide an apparatus for manufacturing a cylindrical film that does not cause scratches on the inner surface and outer surface of the film and can prevent air bubbles from being caught in the overlapped portion. To do.
上記従来技術の有する課題を解決するためこの発明の請求項1記載の筒状フィルムの製造装置は、長尺状フィルムの両縁部を重ねるように折り返し、重ね部を貼り合せて筒状フィルムを製造する装置であって、長尺状フィルムの内面に当てられて折り返し幅を規制する折り返しローラと、この折り返しローラの送り方向下流両側に設けられ前記長尺状フィルムの両縁折り返し部をそれぞれ押えるとともに、折り返し幅を維持するV溝ローラと、前記重ね部に貼り合せ剤を塗布する塗布ノズルと、この貼り合せ剤が塗布された前記重ね部を押圧して貼り合せる貼り合せローラとを備えることを特徴とするものである。   In order to solve the above-described problems of the prior art, the tubular film manufacturing apparatus according to claim 1 of the present invention is folded so that both edges of the long film overlap, and the overlapping portions are bonded together to form the tubular film. An apparatus for manufacturing, a folding roller that is applied to the inner surface of the long film and restricts the folding width, and is provided on both downstream sides in the feed direction of the folding roller and presses both edge folding parts of the long film. And a V-groove roller that maintains the folding width, an application nozzle that applies a bonding agent to the overlapping portion, and a bonding roller that presses and bonds the overlapping portion to which the bonding agent has been applied. It is characterized by.
この筒状フィルムの製造装置によれば、長尺状フィルムの内面に折り返しローラを当てて折り返し幅を規制することで、固定状態の作業プレートの場合のような擦り傷の発生を防止し、この折り返しローラの送り方向下流両側にV溝ローラを設けて長尺状フィルムの両縁折り返し部を両側からそれぞれ押えるとともに、折り返し幅を維持することで、フィルム表面上で接触する搬送方向と交差するローラを用いる場合のような擦り傷の発生を防止しながら筒状フィルムを製造できるようにしている。   According to this tubular film manufacturing apparatus, the folding width is regulated by applying a folding roller to the inner surface of the long film to prevent the occurrence of scratches as in the case of a fixed work plate. V-groove rollers are provided on both downstream sides of the roller feed direction to hold the folded edges of the long film from both sides and maintain the folded width so that the rollers intersecting the conveying direction in contact with the film surface. A cylindrical film can be produced while preventing the generation of scratches as in the case of use.
また、この発明の請求項2記載の筒状フィルムの製造装置は、請求項1記載の構成に加え、前記折り返しローラの前記長尺状フィルムを挟む外側にフィルムのバタツキを押えるガイドローラを設けたことを特徴とするものである。   According to a second aspect of the present invention, in addition to the configuration according to the first aspect, the cylindrical film manufacturing apparatus further includes a guide roller for pressing the flutter of the film on the outer side of the long film of the folding roller. It is characterized by this.
この筒状フィルムの製造装置によれば、折り返しローラの長尺状フィルムを挟む外側にフィルムのバタツキを押えるガイドローラを設けるようにしており、フィルムを平坦状から両縁部を折り返す場合のバタツキをガイドローラで押えてスムーズに折り返すことができるようにしている。   According to this tubular film manufacturing apparatus, a guide roller that presses the flutter of the film is provided on the outer side of the long film of the folding roller, and the fluttering when the edges of the film are folded back from a flat shape is provided. It is pressed by a guide roller so that it can be folded back smoothly.
さらに、この発明の請求項3記載の筒状フィルムの製造装置は、請求項1または2記載の構成に加え、前記V溝ローラを複数対設けて構成したことを特徴とするものである。   Furthermore, in addition to the structure of Claim 1 or 2, the manufacturing apparatus of the cylindrical film of Claim 3 of this invention comprised the said V-groove roller in multiple pairs, It is characterized by the above-mentioned.
この筒状フィルムの製造装置によれば、V溝ローラを複数対設けて構成しており、貼り合せるまでの間、一層容易に所定の折り返し幅を維持できるようになる。   According to this cylindrical film manufacturing apparatus, a plurality of pairs of V-groove rollers are provided, and a predetermined folding width can be more easily maintained until they are bonded.
また、この発明の請求項4記載の筒状フィルムの製造装置は、請求項1〜3のいずれかに記載の構成に加え、前記V溝ローラの送り方向下流両側に、両縁折り返し部の表裏を押える折癖ローラを設けたことを特徴とするものである。   Moreover, in addition to the structure in any one of Claims 1-3, the manufacturing apparatus of the cylindrical film of Claim 4 of this invention is the both sides of the feed direction of the said V-groove roller, and the front and back of both edge folding | returning parts This is characterized in that a folding roller for pressing the is provided.
この筒状フィルムの製造装置によれば、V溝ローラの送り方向下流両側に、両縁折り返し部の表裏を押える折癖ローラを設けるようにしており、表裏を折癖ローラで押えることで、一層確実に折り返し幅を一定に保持できるようになる。   According to this tubular film manufacturing apparatus, folding rollers are provided on both sides of the V-groove roller downstream in the feed direction so as to press the front and back of both edge folding portions. The folding width can be reliably maintained constant.
さらに、この発明の請求項5記載の筒状フィルムの製造装置は、請求項1〜4のいずれかに記載の構成に加え、前記塗布ノズルの送り方向下流側に隣接して前記貼り合せ剤塗布直後の前記重ね部を押えるプレ貼り合せローラを設けたことを特徴とするものである。   Furthermore, in addition to the structure in any one of Claims 1-4, the manufacturing apparatus of the cylindrical film of Claim 5 of this invention adds the said bonding agent adjacent to the feed direction downstream of the said application nozzle. The present invention is characterized in that a pre-bonding roller that presses the immediately following overlapping portion is provided.
この筒状フィルムの製造装置によれば、塗布ノズルの送り方向下流側に隣接して前記貼り合せ剤塗布直後の前記重ね部を押えるプレ貼り合せローラを設けるようにしており、貼り合せ剤の塗布直後に貼り合せローラで押えることで、溶剤アタックの発生を防止して気泡の介在をなくし、白化も防止するようにしている。   According to this cylindrical film manufacturing apparatus, a pre-bonding roller is provided adjacent to the downstream side in the feeding direction of the coating nozzle to press the overlapping portion immediately after the bonding agent is applied. Immediately after that, by pressing with a laminating roller, the occurrence of a solvent attack is prevented, the presence of bubbles is eliminated, and whitening is also prevented.
また、この発明の請求項6記載の筒状フィルムの製造装置は、請求項1〜5のいずれかに記載の構成に加え、前記プレ貼り合せローラを、前記重ね部に対応した狭幅のローラで構成したことを特徴とするものである。   Moreover, the manufacturing apparatus of the cylindrical film of Claim 6 of this invention adds the structure in any one of Claims 1-5, and the said pre-bonding roller is a narrow-width roller corresponding to the said overlap part. It is characterized by comprising.
この筒状フィルムの製造装置によれば、プレ貼り合せローラを、重ね部に対応した狭幅のローラで構成するようにしており、必要最小限の幅のローラとすることで、押圧力の付与も容易とし、一層確実に気泡の介在を防止して白化を防止できるようになる。   According to this tubular film manufacturing apparatus, the pre-bonding roller is configured with a narrow width roller corresponding to the overlapped portion, and a pressing force is applied by using a roller with the minimum necessary width. This also facilitates the prevention of whitening by preventing the inclusion of bubbles more reliably.
この発明の請求項1記載の筒状フィルムの製造装置によれば、長尺状フィルムの両縁部を重ねるように折り返し、重ね部を貼り合せて筒状フィルムを製造する装置で、長尺状フィルムの内面に当てられて折り返し幅を規制する折り返しローラと、この折り返しローラの送り方向下流両側に設けられ前記長尺状フィルムの両縁折り返し部をそれぞれ押えるとともに、折り返し幅を維持するV溝ローラと、前記重ね部に貼り合せ剤を塗布する塗布ノズルと、この貼り合せ剤が塗布された前記重ね部を押圧して貼り合せる貼り合せローラとを備えるようにしたので、長尺状フィルムの内面に折り返しローラを当てて折り返し幅を規制することで、固定状態の作業プレートの場合のような擦り傷の発生を防止することができ、この折り返しローラの送り方向下流両側にV溝ローラを設けて長尺状フィルムの両縁折り返し部を両側からそれぞれ押えるとともに、折り返し幅を維持することで、フィルム表面上で接触する搬送方向と交差するローラを用いる場合のような擦り傷の発生を防止することができ、高精度に筒状フィルムを製造することができる。   According to the tubular film manufacturing apparatus of the first aspect of the present invention, the tubular film is manufactured by folding the both ends of the long film so as to overlap each other and bonding the overlapping portions. A folding roller that is applied to the inner surface of the film and regulates the folding width, and a V-groove roller that is provided on both downstream sides in the feeding direction of the folding roller and holds both folded-back portions of the long film and maintains the folding width And an application nozzle for applying a bonding agent to the overlapping portion and a bonding roller for pressing and bonding the overlapping portion to which the bonding agent has been applied. By restricting the folding width by applying a folding roller to the roller, it is possible to prevent the occurrence of scratches as in the case of a fixed work plate. In the case of using a roller that intersects with the conveying direction in contact with the film surface by providing V-groove rollers on both sides in the downstream direction and pressing the both edges folded portions of the long film from both sides and maintaining the folded width. Generation | occurrence | production of such an abrasion can be prevented and a cylindrical film can be manufactured with high precision.
また、この発明の請求項2記載の筒状フィルムの製造装置によれば、折り返しローラの長尺状フィルムを挟む外側にフィルムのバタツキを押えるガイドローラを設けるようにしたので、フィルムを平坦状から両縁部を折り返す場合のバタツキをガイドローラで押えてスムーズに折り返すことができる。   According to the cylindrical film manufacturing apparatus of the second aspect of the present invention, since the guide roller that presses the flutter of the film is provided outside the long film of the folding roller, the film is made flat. It is possible to smoothly fold back by pressing the flutter when turning back both edges with a guide roller.
さらに、この発明の請求項3記載の筒状フィルムの製造装置によれば、V溝ローラを複数対設けて構成したので、貼り合せるまでの間、一層容易に所定の折り返し幅を維持することができる。   Furthermore, according to the tubular film manufacturing apparatus according to claim 3 of the present invention, since a plurality of pairs of V-groove rollers are provided, the predetermined folding width can be more easily maintained until the rollers are bonded. it can.
また、この発明の請求項4記載の筒状フィルムの製造装置によれば、V溝ローラの送り方向下流両側に、両縁折り返し部の表裏を押える折癖ローラを設けるようにしたので、表裏を折癖ローラで押えることで、一層確実に折り返し幅を一定に保持することができる。   According to the tubular film manufacturing apparatus of the fourth aspect of the present invention, the folding rollers for pressing the front and back of both edge folded portions are provided on both downstream sides in the feed direction of the V-groove roller. By pressing with the folding roller, the folding width can be more reliably maintained constant.
さらに、この発明の請求項5記載の筒状フィルムの製造装置によれば、塗布ノズルの送り方向下流側に隣接して前記貼り合せ剤塗布直後の前記重ね部を押えるプレ貼り合せローラを設けるようにしたので、貼り合せ剤の塗布直後に貼り合せローラで押えることで、溶剤アタックなどの発生を防止して気泡の介在をなくすことができるとともに、これによる白化も防止することができる。   Further, according to the tubular film manufacturing apparatus of the fifth aspect of the present invention, a pre-bonding roller is provided adjacent to the downstream side in the feed direction of the coating nozzle to press the overlapping portion immediately after the bonding agent is applied. Therefore, by pressing with the laminating roller immediately after application of the laminating agent, it is possible to prevent the occurrence of solvent attack and the like and to eliminate the presence of bubbles, and also to prevent whitening due to this.
また、この発明の請求項6記載の筒状フィルムの製造装置によれば、プレ貼り合せローラを、重ね部に対応した狭幅のローラで構成するようにしたので、必要最小限の幅のローラとすることで、押圧力の付与も容易となるとともに、一層確実に気泡の介在を防止して白化を防止することができる。   According to the tubular film manufacturing apparatus of the sixth aspect of the present invention, the pre-bonding roller is constituted by a narrow-width roller corresponding to the overlapping portion. By doing so, it is easy to apply a pressing force, and it is possible to prevent white air from being more reliably prevented from interposing bubbles.
以下、この発明の一実施の形態を図面に基づき詳細に説明する。
図1および図2はこの発明の筒状フィルムの製造装置の一実施の形態にかかり、図1は全体の概略斜視図、図2はV溝ローラ部分、折癖ローラ部分、およびプレ貼り合わせローラ部分の断面図である。
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
1 and 2 relate to an embodiment of the tubular film manufacturing apparatus of the present invention, FIG. 1 is a schematic perspective view of the whole, and FIG. 2 is a V-groove roller portion, a signature roller portion, and a pre-bonding roller. It is sectional drawing of a part.
この筒状フィルムの製造装置10は、例えばペットボトルなどの容器に加熱収縮させて装着される印刷などが施された熱収縮性ラベルを平板状のフィルムから筒状のフィルムに製造するための装置として使用されるものであり、平板状の長尺フィルムには、その内面に予め印刷などが施される。   The cylindrical film manufacturing apparatus 10 is an apparatus for manufacturing a heat-shrinkable label, which is printed by being heat-shrinked into a container such as a PET bottle, from a flat film to a cylindrical film. The flat long film is printed on the inner surface in advance.
この筒状フィルムの製造装置10では、長尺状のフィルム11を搬送する図示しない上流側の搬送ローラおよび貼り合せた後の筒状フィルム12を引っ張るようにして搬送する下流側搬送ローラとしてニップローラ13を備えており、ロール状のフィルム11を順次繰り出した後、両縁部11a,11bを重ねるように折り返し、重ね部11cを貼り合わせて筒状フィルム12として送り出し、図示しない巻き取り装置で巻き取るようになっている。   In this cylindrical film manufacturing apparatus 10, a nip roller 13 is used as an upstream conveyance roller (not shown) that conveys the long film 11 and a downstream conveyance roller that conveys the tubular film 12 after being bonded by pulling. After the roll-shaped film 11 is sequentially fed out, it is folded back so that both edge portions 11a and 11b are overlapped, and the overlapping portion 11c is bonded and fed out as a tubular film 12, and is wound up by a winding device (not shown). It is like that.
こうして搬送される長尺状のフィルム11を折り返して筒状のフィルム12にするため、折り返し幅を規制する折り返しローラ14が上流側に設けられ、水平ローラで構成されるとともに、そのロール長がフィルム11の折り返し幅Bに対応して定められ、フィルム11の内面に接触させて筒状フィルム12の折り径Dを規制する。なお、搬送される長尺状のフィルム11は折返しローラ14への挿入角度が水平面に対して5〜80度、好ましくは40〜60度となるように設定されている。   In order to fold the long film 11 conveyed in this way into a cylindrical film 12, a folding roller 14 for regulating the folding width is provided on the upstream side and is composed of a horizontal roller, and the roll length is the film. 11 is set in correspondence with the folding width B of 11 and is brought into contact with the inner surface of the film 11 to regulate the folding diameter D of the tubular film 12. In addition, the elongate film 11 conveyed is set so that the insertion angle to the folding | turning roller 14 may be 5 to 80 degree | times with respect to a horizontal surface, Preferably it is 40 to 60 degree | times.
この折り返しローラ14の両側には、折り返されるフィルム11の両縁部11a,11bがバタツカないようにガイドする1対のガイドローラ15が設けられ、垂直ローラで構成されて一対のガイドローラ15の間をフィルム11が接触しながら搬送されるようになっている。   A pair of guide rollers 15 are provided on both sides of the folding roller 14 to guide the edges 11a and 11b of the folded film 11 so as not to flutter. Is conveyed while the film 11 is in contact therewith.
また、この折り返しローラ14の下流側には、図2(a)に示すように、折り返された折り返し部11dの上下を押えるV溝が設けられたV溝ローラ16が配置され、このV溝ローラ16をフィルム11の幅方向両側に1対配置してフィルム11を両側から挟むことでフィルム11の折り返し幅B(筒状フィルム12の折り径D)を維持するようにしてある。   Further, as shown in FIG. 2A, a V-groove roller 16 provided with V-grooves for pressing up and down of the folded-back portion 11d is disposed on the downstream side of the folding roller 14. A pair of 16 is arranged on both sides in the width direction of the film 11 and the film 11 is sandwiched from both sides so that the folded width B of the film 11 (folding diameter D of the tubular film 12) is maintained.
そして、このようなV溝ローラ16が搬送方向に3対設けられ、フィルム11の折り返し形状および折り返し幅B(筒状フィルム12の折り径D)を維持できるようにしてある。   Three pairs of such V-groove rollers 16 are provided in the conveying direction so that the folded shape of the film 11 and the folded width B (folded diameter D of the tubular film 12) can be maintained.
また、この筒状フィルムの製造装置10では、最上流のV溝ローラ16の下流に、図2(b)に示すように、上下1対の水平ロールで構成した折癖ローラ17が設けられ、フィルム11に完全な折り目がつくまでは折り重ねることなく、折り返された状態を維持できる程度に押えるようにロールギャップを調整してある。   Further, in this tubular film manufacturing apparatus 10, a folding roller 17 constituted by a pair of upper and lower horizontal rolls is provided downstream of the most upstream V-groove roller 16, as shown in FIG. The roll gap is adjusted so that the folded state can be maintained without folding until the film 11 is completely folded.
また、最下流のV溝ローラ16の下流側にも折癖ローラ17が設けてある。
そして、これら折り癖ローラ17は、例えば図2(b)に示すように、フィルム11の幅方向に分割した短いローラの分割ローラとして構成したり、図2(c)に示すように、上側を分割ローラとし、下側を1本の長い連続ローラで構成してある。
A folding roller 17 is also provided on the downstream side of the most downstream V-groove roller 16.
These folding rollers 17 are configured as short rollers divided in the width direction of the film 11 as shown in FIG. 2 (b), for example, or as shown in FIG. 2 (c). A split roller is used, and the lower side is constituted by one long continuous roller.
なお、折癖ローラ17は、図示例のもののほか、上下とも長い連続ローラで構成するようにしても良く、フィルム11に折り癖をつけることができるものであれば良い。   In addition to the illustrated example, the folding roller 17 may be constituted by a continuous roller that is long in both the upper and lower sides, and may be any as long as it can fold the film 11.
この最下流のV溝ローラ16とその下流の折癖ローラ17との間に、張り合わせ剤を塗布する塗布ノズル18が設けられ、ここでは、フィルム11の重ね部11cの上側の縁部11aの内面に接着溶剤を塗布するようにしてある。   A coating nozzle 18 for applying a laminating agent is provided between the most downstream V-groove roller 16 and the downstream folding roller 17. Here, the inner surface of the upper edge portion 11 a of the overlapping portion 11 c of the film 11 is provided. An adhesive solvent is applied to the substrate.
なお、貼り合わせ剤としては、フィルム11の溶剤のほか、接着剤を用いるようにしても良く、重ね部11cを貼り合わせて筒状にできるものであれば良い。   In addition, as a bonding agent, an adhesive may be used in addition to the solvent of the film 11 as long as the overlapping portion 11c can be bonded to form a cylinder.
この塗布ノズル18のすぐ下流側に貼り合わせ用のプレ貼り合せローラとしてのプレニップローラ19が設けられ、下流側の折癖ローラ17の上側のローラの間に配置され、下側の折癖ローラ17をプレ貼り合せローラとしてのプレニップローラ19の下側のローラと兼用してフィルム11の重ね部11cを押えて接着できるようにしてある。   A pre-nip roller 19 as a pre-bonding roller for bonding is provided immediately downstream of the coating nozzle 18 and is disposed between the upper rollers of the downstream folding roller 17 and the lower folding roller 17. Is used also as a lower roller of the pre-nip roller 19 as a pre-bonding roller so that the overlapping portion 11c of the film 11 can be pressed and bonded.
このプレ貼り合せローラとしてのプレニップローラ19で、貼り合わせ剤を塗布した直後にフィルム11の重ね部11cを押えることで、接着溶剤によるフィルム11の溶剤アタックによる凹凸の発生を防止でき、凹凸内に気泡が挟まって白化することも防止する。   The pre-nip roller 19 as the pre-bonding roller presses the overlapping portion 11c of the film 11 immediately after the bonding agent is applied, thereby preventing the occurrence of unevenness due to the solvent attack of the film 11 by the adhesive solvent. It also prevents white air bubbles from getting caught.
さらに、このプレ貼り合せローラとしてのプレニップローラ19の下流側に位置するニップローラ13によって筒状フィルム12の幅方向全体が押えられるとともに、筒状フィルム12が引き出されるように搬送される。   Further, the entire width direction of the tubular film 12 is pressed by the nip roller 13 positioned on the downstream side of the pre-nip roller 19 as the pre-bonding roller, and the tubular film 12 is conveyed so as to be pulled out.
このように構成した筒状フィルムの製造装置10では、次のようにして長尺状のフィルム11から筒状フィルム12が製造される。   In the cylindrical film manufacturing apparatus 10 configured as described above, the cylindrical film 12 is manufactured from the long film 11 as follows.
ロール状の長尺状フィルム11が図示しない上流側の搬送ローラおよび下流側のニップローラ13で搬送され、折り返しローラ14の下側に送られると、折り返しローラ14の幅でフィルム11の両縁部11a、11bが折り返されるとともに、その両側のガイドローラ15でバタツキを防止するようにガイドされて折り返しが開始される。   When the roll-shaped long film 11 is conveyed by an upstream conveyance roller and a downstream nip roller 13 (not shown) and sent to the lower side of the folding roller 14, both edges 11 a of the film 11 have the width of the folding roller 14. , 11b are folded back and guided by the guide rollers 15 on both sides thereof to prevent fluttering, and the folding is started.
そして、折り返された状態のフィルム11が搬送されながら3対のV溝ローラ16および折癖ローラ17によって折り返し幅Bが維持されるとともに、折り返し部11dが押えられて確実に折り返し状態が保持され、貼り合わせ剤の塗布ノズル18で重ね部11cの一方に接着溶剤が塗布される。   Then, the folded width B is maintained by the three pairs of the V-groove roller 16 and the folding roller 17 while the folded film 11 is being conveyed, and the folded portion 11d is pressed and reliably folded. An adhesive solvent is applied to one of the overlapping portions 11c by the application nozzle 18 for the bonding agent.
すると、この塗布ノズル18の直後に設けたプレ貼り合せローラとしてのプレニップローラ19で重ね部11cが押えられて貼り合わせられ、筒状フィルム12になる。   Then, the overlapping portion 11c is pressed and bonded by a pre-nip roller 19 as a pre-bonding roller provided immediately after the coating nozzle 18, and the cylindrical film 12 is formed.
そして、さらに下流のニップローラ13で筒状フィルム12が全幅にわたって押えられて送り出され、巻き取られて筒状フィルム12が完成する。   Then, the tubular film 12 is pressed over the entire width by the nip roller 13 further downstream, sent out, and wound up to complete the tubular film 12.
このような筒状フィルムの製造装置10によれば、長尺状フィルム11の内面に回転する折り返しローラ14を当てて折り返し幅Bを規制することで、固定状態の作業プレートの場合のような擦り傷の発生を防止することができる。   According to such a tubular film manufacturing apparatus 10, the folding width 14 is regulated by applying the rotating folding roller 14 to the inner surface of the long film 11, so that the scratches as in the case of a fixed work plate are obtained. Can be prevented.
また、この折り返しローラ14の送り方向下流両側にV溝ローラ16を設けて長尺状フィルム11の両縁折り返し部11dを両側からそれぞれ押えるとともに、折り返し幅Bを維持することで、フィルム11の表面上で接触する搬送方向と交差するローラを用いる場合のような擦り傷の発生を防止することができ、高精度に筒状フィルムを製造することができる。   Further, V groove rollers 16 are provided on both downstream sides in the feed direction of the folding roller 14 to press both edge folded portions 11d of the long film 11 from both sides and maintain the folded width B. It is possible to prevent the occurrence of scratches as in the case of using a roller that intersects the conveying direction in contact with the above, and it is possible to manufacture a cylindrical film with high accuracy.
さらに、折り返しローラ14の外側にフィルム11のバタツキを押えるガイドローラ15を設けるようにしたので、フィルム11を平坦状から両縁部11a,11bを折り返す場合のバタツキを押えてスムーズに折り返すことができる。   Further, since the guide roller 15 for pressing the flutter of the film 11 is provided on the outer side of the folding roller 14, the film 11 can be smoothly folded back by pressing the flutter when the edges 11a and 11b are folded back from the flat shape. .
また、この筒状フィルムの製造装置10によれば、V溝ローラ16の送り方向下流両側に、両縁折り返し部11dの表裏を押える折癖ローラ17を設けるようにしたので、一層確実に折り返し幅B(筒状フィルム12の折り径D)を一定に保持することができる。   Further, according to the tubular film manufacturing apparatus 10, the folding rollers 17 that press the front and back of the both-side folded portions 11d are provided on both downstream sides in the feed direction of the V-groove roller 16, so that the folding width can be more reliably achieved. B (folding diameter D of the tubular film 12) can be kept constant.
さらに、塗布ノズル18の送り方向下流側に隣接してプレ貼り合せローラとしてのプレニップローラ19を設けるようにしたので、貼り合せ剤の塗布直後に押えることで、溶剤アタックなどの発生を防止して気泡の介在をなくすことができるとともに、これによる白化も防止することができる。   Further, since a pre-nip roller 19 as a pre-bonding roller is provided adjacent to the downstream side of the coating nozzle 18 in the feed direction, by pressing immediately after the bonding agent is applied, the occurrence of a solvent attack or the like is prevented. Air bubbles can be eliminated and whitening caused by this can be prevented.
また、このプレ貼り合せローラとしてのプレニップローラ19を、重ね部11cに対応した狭幅のローラで構成したので、必要最小限のローラ幅とすることで、押圧力の付与も容易となるとともに、一層確実に気泡の介在を防止して白化を防止することができる。   In addition, since the pre-nip roller 19 as the pre-bonding roller is configured with a narrow width roller corresponding to the overlapping portion 11c, it is easy to apply a pressing force by setting the minimum necessary roller width, It is possible to prevent whitening by more reliably preventing the presence of bubbles.
次に、この発明の筒状フィルムの製造装置10により製造した筒状フィルム12の実施例について、その折り径Dの測定結果を比較例とともに説明する。
この実施例では、2.0L(リットル)のPETボトル用の筒状フィルム(目標折り径:174.3mm)を搬送速度を変えて(100,200m/min)製造し、それぞれの折り径D(mm)を測定した。
Next, about the Example of the cylindrical film 12 manufactured with the manufacturing apparatus 10 of the cylindrical film of this invention, the measurement result of the folding diameter D is demonstrated with a comparative example.
In this example, 2.0 L (liter) of a tubular film for PET bottles (target folding diameter: 174.3 mm) was manufactured by changing the conveying speed (100, 200 m / min), and each folding diameter D ( mm).
また、使用したフィルム(材料:OPS、厚さ:60μm)は、A社製I、II、B社製Iの3種類とした。   Moreover, the film used (material: OPS, thickness: 60 micrometers) was made into three types of I, II made from A company, and I made from B company.
なお、筒状フィルムの製造装置としては、3対のV溝ローラおよび2対の折癖ローラを設置した。   As a cylindrical film manufacturing apparatus, three pairs of V-groove rollers and two pairs of folding rollers were installed.
また、比較例として、従来の作業プレートと2組の傾斜ローラを備えた装置を使用した。   Moreover, the apparatus provided with the conventional working plate and 2 sets of inclination rollers was used as a comparative example.
このような実施例および比較例の測定結果は、表1に示すようになり、いずれの場合についても、実施例の折り径Dの方が目標折り径との誤差が小さく、高精度に製造できることが確認できた。   The measurement results of Examples and Comparative Examples are as shown in Table 1. In any case, the folding diameter D of the example has a smaller error from the target folding diameter and can be manufactured with high accuracy. Was confirmed.
また、実施例において得られた筒状フィルムには、内面側の傷や外面側の擦り傷の発生は見られず、貼り合わせ部分の白化もなかった。
In addition, the tubular films obtained in the examples did not show any scratches on the inner surface side or scratches on the outer surface side, and there was no whitening of the bonded portion.
この発明の筒状フィルムの製造装置の一実施の形態にかかる全体の概略斜視図である。1 is an overall schematic perspective view according to an embodiment of a tubular film manufacturing apparatus of the present invention. この発明の筒状フィルムの製造装置の一実施の形態にかかるV溝ローラ部分、折癖ローラ部分、およびプレ貼り合わせローラ部分の断面図である。It is sectional drawing of the V groove roller part concerning one embodiment of the manufacturing apparatus of the cylindrical film of this invention, a signature roller part, and a pre-bonding roller part. 従来の筒状フィルムの製造装置の概略平面図である。It is a schematic plan view of the conventional cylindrical film manufacturing apparatus.
符号の説明Explanation of symbols
10 筒状フィルムの製造装置
11 長尺状のフィルム
11a 縁部
11b 縁部
11c 重ね部
11d 折り返し部
12 筒状フィルム
13 ニップローラ
14 折り返しローラ
15 ガイドローラ
16 V溝ローラ
17 折癖ローラ
18 塗布ノズル
19 プレニップローラ(プレ貼り合せローラ)
B フィルムの折り返し幅
D 筒状フィルムの折り径

DESCRIPTION OF SYMBOLS 10 Cylindrical film manufacturing apparatus 11 Long film 11a Edge part 11b Edge part 11c Overlapping part 11d Folding part 12 Cylindrical film 13 Nip roller 14 Folding roller 15 Guide roller 16 V groove roller 17 Folding roller 18 Coating nozzle 19 Pre Nip roller (pre-bonding roller)
B Folding width of the film D Folding diameter of the tubular film

Claims (6)

  1. 長尺状フィルムの両縁部を重ねるように折り返し、重ね部を貼り合せて筒状フィルムを製造する装置であって、
    長尺状フィルムの内面に当てられて折り返し幅を規制する折り返しローラと、
    この折り返しローラの送り方向下流両側に設けられ前記長尺状フィルムの両縁折り返し部をそれぞれ押えるとともに、折り返し幅を維持するV溝ローラと、
    前記重ね部に貼り合せ剤を塗布する塗布ノズルと、
    この貼り合せ剤が塗布された前記重ね部を押圧して貼り合せる貼り合せローラとを備えることを特徴とする筒状フィルムの製造装置。
    It is an apparatus for producing a tubular film by folding back both ends of a long film so as to overlap each other and bonding the overlapping parts,
    A folding roller that is applied to the inner surface of the long film and regulates the folding width;
    A V-groove roller that is provided on both downstream sides in the feed direction of the folding roller and presses both edge folding portions of the long film and maintains the folding width;
    An application nozzle for applying a bonding agent to the overlapping portion;
    An apparatus for producing a cylindrical film, comprising: a laminating roller for pressing and laminating the overlapped portion coated with the laminating agent.
  2. 前記折り返しローラの前記長尺状フィルムを挟む外側にフィルムのバタツキを押えるガイドローラを設けたことを特徴とする請求項1記載の筒状フィルムの製造装置。   The cylindrical film manufacturing apparatus according to claim 1, wherein a guide roller that presses the flutter of the film is provided on an outer side of the long film between the folding rollers.
  3. 前記V溝ローラを複数対設けて構成したことを特徴とする請求項1または2記載の筒状フィルムの製造装置。   3. The tubular film manufacturing apparatus according to claim 1, wherein a plurality of pairs of the V-groove rollers are provided.
  4. 前記V溝ローラの送り方向下流両側に、両縁折り返し部の表裏を押える折癖ローラを設けたことを特徴とする請求項1〜3のいずれかに記載の筒状フィルムの製造装置。   The apparatus for producing a cylindrical film according to any one of claims 1 to 3, wherein a folding roller for pressing the front and back of both edge folded portions is provided on both sides downstream of the V-groove roller in the feeding direction.
  5. 前記塗布ノズルの送り方向下流側に隣接して前記貼り合せ剤塗布直後の前記重ね部を押えるプレ貼り合せローラを設けたことを特徴とする請求項1〜4のいずれかに記載の筒状フィルムの製造装置。   The cylindrical film according to any one of claims 1 to 4, wherein a pre-bonding roller is provided adjacent to the downstream side in the feed direction of the coating nozzle to press the overlapping portion immediately after the bonding agent is applied. Manufacturing equipment.
  6. 前記プレ貼り合せローラを、前記重ね部に対応した狭幅のローラで構成したことを特徴とする請求項1〜5のいずれかに記載の筒状フィルムの製造装置。

    The cylindrical film manufacturing apparatus according to any one of claims 1 to 5, wherein the pre-bonding roller is a narrow roller corresponding to the overlapping portion.

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Cited By (14)

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Publication number Priority date Publication date Assignee Title
KR100732479B1 (en) 2006-11-02 2007-06-27 도인훈 Method and apparatus for producing bag tube with built-in tubular film
KR200455247Y1 (en) 2008-12-16 2011-08-25 고정수 Continuous folding device of film
JP2010264653A (en) * 2009-05-14 2010-11-25 Gunze Ltd Apparatus for manufacturing cylindrical film
KR101091848B1 (en) 2009-07-31 2011-12-12 호용종합건설주식회사 method of manufacturing tube lining bag
KR101110663B1 (en) 2009-07-31 2012-02-16 호용종합건설주식회사 coating apparatus of tube lining bag
KR101110664B1 (en) 2009-07-31 2012-03-05 호용종합건설주식회사 centring apparatus of tube lining bag
US9833965B2 (en) 2010-10-26 2017-12-05 Riso Kagaku Corporation Sealed letter producing device and envelope sheet
WO2012057202A1 (en) * 2010-10-26 2012-05-03 理想科学工業株式会社 Sealed letter preparation device and envelope paper
JP2012091376A (en) * 2010-10-26 2012-05-17 Riso Kagaku Corp Sealed letter preparation device and envelope paper
JP2013071759A (en) * 2011-09-28 2013-04-22 Riso Kagaku Corp Envelope paper and sealed letter preparation device
KR101280318B1 (en) 2013-01-29 2013-07-01 (주)진영코리아 Manufacturing devices of join apparatus for the double exhaust pipe for a car
WO2020059787A1 (en) * 2018-09-21 2020-03-26 日本製紙株式会社 Square-tube straw production method and square-tube straw
CN109334109A (en) * 2018-11-19 2019-02-15 安徽百盛源包装材料有限公司 A kind of crimping unit of middle envelope paper bag machine
CN109334109B (en) * 2018-11-19 2020-08-21 安徽百盛源包装材料有限公司 Edge folding device of medium-sealed paper bag machine

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