JP3811666B2 - Cylindrical support and film or sheet winding method using the support - Google Patents

Cylindrical support and film or sheet winding method using the support Download PDF

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JP3811666B2
JP3811666B2 JP2002188982A JP2002188982A JP3811666B2 JP 3811666 B2 JP3811666 B2 JP 3811666B2 JP 2002188982 A JP2002188982 A JP 2002188982A JP 2002188982 A JP2002188982 A JP 2002188982A JP 3811666 B2 JP3811666 B2 JP 3811666B2
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film
sheet
lead paper
cylindrical support
paper
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JP2004026468A (en
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昭秀 藤田
亮太 中嶋
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Mitsubishi Chemical Corp
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Mitsubishi Chemical Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、フィルム又はシートを巻き取るための筒状支持体、及びその筒状支持体を用いてフィルム又はシートを巻き取る方法に関する。特に、印刷用樹脂フィルム又はシートの筒状支持体として好適に用いることができる。
【0002】
【従来の技術】
従来、渦巻状に巻き取られたフィルム又はシート(以下、ロールと記す)を用いる輪転印刷機では、印刷中のロールが無くなる前に新しいロールと連結して、ロール切れによる中断を無くし、連続的に印刷が行われている(例えば、特開平6−171067号公報、特開平7−232845号公報、特開平7−237792号公報)。または、ロールとロールの間にリード紙を貼付け、印刷ラインに通し、リード紙が印刷機内にある時に、フィルム又はシートの印刷位置を完全に合わせてから印刷する方法が用いられている。
【0003】
【発明が解決しようとする課題】
前者方法は、フィルム又はシート同士をつなぎ合わせる時に若干のズレが生じやすく、ペースター(印刷中のロールから次の新しいロールへのシート又はフィルムの継ぎ変え)の際に、ぺースター直後の次のロールの最初の印刷部分に大きな画線ズレが生じるという問題があった。ロール継ぎ変え後に生じた大きな画線ズレは徐々に調整せざるを得ず、調整完了までの間に大量の不良印刷が行われるため、ムダが多く、各製品長にバラツキが生じることが多かった。したがって、キャリアテープのように、製品長に規格がある場合には、上記方法を適応するのは難しいものであった。
【0004】
一方、後者方法を用いた場合、ロールとロールの間にリード紙を貼り付けて印刷ラインに通すため、印刷機内にリード紙がある時に、完全に印刷位置を合わせてからシートを印刷することから、フィルム又はシートに印刷不良が生じにくく、印刷後のフィルム又はシート長は一定のものを得ることが出来る。しかし、印刷する前に、予めフィルム又はシートにリード紙を取り付けるという作業が必要であった。これは、特開平7−101603号公報に記載されるような紙継ぎ方法を用いて、フィルム又はシートとリード紙の取付けを行うことが可能であるが、非常に手間のかかるものである。しかしながら、製品長に規格がある場合、規定長の製品が取れないことによる甚大な損失に比較してコスト的にメリットがあることからこの様な方法が長年とられてきた。
【0005】
そこで、本発明の目的とするところは、フィルム又はシート生産時に予めリード紙の付与された筒状支持体であって、フィルム又はシート製造時において通常の巻き取り装置を用いて巻取り可能であり、印刷工程時においても支障が生じないコスト的に非常に安価に製造することが可能な筒状支持体、及びその筒状支持体を用いてフィルムやシートを巻き取る方法を提供することにある。
【0006】
【課題を解決するための手段】
本発明者等は上記問題点を解決するために鋭意検討した結果、フィルム又はシート製造時の巻き取り工程と、印刷時の巻き取り工程では、フィルム又はシートにかかる引っ張り強度が異なることを見出した。そして、この引っ張り強度の差を利用して、フィルム又はシート製造時には、リード紙が筒状支持体に固定されており、通常の筒状支持体と同様の工程でフィルム又はシートを巻き取ることができ、しかも、印刷時には、リード紙が自動的に繰り出し、リード紙の付いたフィルム又はシートとして利用することが可能な筒状支持体、及びその筒状支持体を用いてフィルムやフィルム又はシートを巻き取る方法により本発明を完成させた。
【0007】
すなわち、第1の本発明は、芯管2、リード紙3及び接着部4からなるフィルム又はシートを巻き取るための筒状支持体1であって、
a.リード紙3は印刷中、印刷機のガイドロールへフィルム又はシートを導くために使用するものであり、
b.芯管2にリード紙3が巻き取られており、
c.リード紙3先端部分表面に接合部6を設け、フィルム又はシート5を接合し、
d.リード紙3の先端部分に再剥離可能な接着部4を有し、
e.接着部4と下層のリード紙3Lとが接着され、
f.着部4の接着強度が0.5N/m〜50N/mである、
芯管2とリード紙3が一体となった筒状支持体1である。
【0008】
第2の本発明は、リード紙3として紙又はプラスチック製の素材を用いる筒状支持体1である。
【0009】
第3の本発明は、上記筒状支持体1を用い、筒状支持体1を回転させながらフィルム又はシートを巻き取る方法。
【0010】
【発明の実施の形態】
芯管2は、フィルム又はシートを巻き取ることの出来る十分な強度と機能性があれば、材質、サイズには特に制限されない。例えば、シートやフィルムの巻き取りに一般的に用いられている3インチ紙管と呼ばれている紙製(内径が約75mm、外径が約92mm)のものが挙げられる。また、場合によっては、プラスチック製や金属製のものでも全く問題ない。
【0011】
芯管に巻き付けておくリード紙3は印刷中、印刷機のガイドロールへフィルム又はシートを導くために使用するものであり、十分な長さが必要である。リード紙長が短すぎるとフィルム又はシート継ぎ変え時、印刷位置を合わせる前にリード紙が無くなり、位置合わせが不充分な状態でフィルム又はシートに印刷を行わなければならなくなる。一方、リード紙長が長過ぎるとリード紙を繰り出す時間が余分に必要となり、作業効率が低下する。リード紙の適正な長さは印刷設備や、印刷を行う色数によって変化するのものであるが、一般的な印刷工程を考慮すれば、30m〜80mが好ましい。
【0012】
リード紙3は印刷の位置合わせ時に乾燥工程にとどまり、長時間熱を受けることがあるため、十分な耐熱性が必要である。通常、60〜150℃程度で乾燥が行われているため、一般的な紙でも耐熱性は十分であるが、特に高温の乾燥工程を通過する場合には耐熱性のある素材を用いることが好ましく、二軸延伸のポリエステルフィルムの様なプラスチック製の素材を用いることも出来る。
【0013】
リード紙3は、印刷機を通過する時にフィルム又はシートと同じテンションを受けるため、十分な強度が必要である。200μm程度のフィルム又はシートを印刷する場合、一般的に20g/m2〜150g/m2程度の目付けの紙やフィルムを用いることが多いが、これより厚いフィルム又はシートを印刷する場合にはより強いテンションで印刷が行われるため、より高い強度を持ったものを選択することが必要である。
【0014】
また、リード紙3の巾は、印刷のズレや、取り扱い上の点を考えるとフィルム又はシートの巾と、或いは芯管2の巾とほぼ同一であることが好ましい。そして、リード紙3は芯管2と十分な強度で接着されていることが必要である。好ましくは73N/m以上、更に好ましくは196N/m以上の接着強度を有するものである。接着強度が不充分だと、フィルム又はシートを巻き取ることができない。また、接着強度が十分であれば、接着方法は、粘着テープ、接着剤、両面テープ等何れの方法を用いても構わない。
【0015】
本発明品の筒状支持体1は、リード紙3の先端部分の接着部4をその下層のリード紙に種々の方法により接着して、芯管2とリード紙3と一体としたものであって、フィルム又はシート製造時に通常の筒状支持体と同様にフィルム又はシートの巻き取りを行うことが可能である。一方、印刷時にはリード紙3の先端部分が破断することなしに剥離し、リード紙が繰り出される。ここで、リード紙及びフィルム又はシートの巻き取り方向を縦方向、巻取り方向と垂直な方向を横方向と便宜上定義する。また、先端部分とは、リード紙の先端部3aから縦方向に20cmまでの帯状の領域を指すものとする。
【0016】
先端部分の接着部4の接着強度が不十分な場合には、フィルム又はシートを巻き付ける時に接着部4が剥がれてしまい、フィルム又はシートを巻き付けることが出来ない。したがって、接着部4に必要な接着強度は、0.25N/m以上、好ましくは0.5N/m以上である。
【0017】
一方、上記接着強度が強すぎると、印刷時に再剥離し難く、場合によってはリード紙3が破断等のトラブルを引き起こしてしまうので好ましくない。したがって、接着部4の接着強度はが50N/m以下、好ましくは25N/m以下である。
【0018】
したがって、先端部分の接着部4の接着強度はリード紙3の材質や強度によっても異なるが、0.25N/m〜50N/m、好適には0.5N/m〜25N/m、更に好適には0.5N/m〜15N/mであり、最も好適な範囲としては0.5N/m〜5N/mである。リード紙3に強度の高いPETフィルムを用いた場合、破れにくく、上記範囲よりも高い接着強度で接着させても再剥離させることは可能であるが、印刷時に印刷機のガイドロールにくっついてしまうなど熱によるトラブルが発生し易い傾向がある。
【0019】
本発明品の先端部分の接着部4を下層のリード紙3Lと接着させる具体的な方法としては以下の4つの方法が考えられるが、本発明は下記方法に限定されるものではない。
【0020】
1つ目の方法としては、先端部分の裏面に再剥離可能な接着剤を塗布することで接着部4を作成し、接着させる方法である。再剥離可能な接着剤であれば、液体塗布方式、スプレー塗布方式等、どの様な形態のものであっても構わない。例えば、住友スリーエム株式会社製のスプレーのりタイプ55やタイプ66が挙げられる。接着剤の塗布は、上記範囲内の接着強度が得られれば、先端部分の横巾全部に塗布する必要はなく、フィルム又はシートの横方向に一定間隔をあけて塗布することも出来る。また、接着剤を塗布する縦巾は、上記範囲内の接着強度が得られれば、特に制限されないが、先端部分内に0.1cm〜20cmの範囲で塗布することが好ましく、更に好ましくは1cm〜5cmの範囲である。接着剤を塗布する縦巾が狭すぎると接着が不十分となる危険性が生ずる。一方、接着する縦巾が広すぎると経済的に好ましくないばかりか、再剥離しにくくなる。
【0021】
2つ目の方法としては、図10に示すようにリード紙3先端部分に、その先端部3aから一部がはみ出すように片面テープを貼りつけることで接着部4を作成し、接着させる方法である。上記接着強度が得られれば、どの様な片面テープでも用いることが出来る。例えば、住友スリーエム株式会社製はってはがせるテープタイプ811が挙げられる。接着は上記接着剤を塗布させる時と同様、上記範囲内の接着強度が得られれば、図5に示すように接着部4は、先端部分の横巾全部に作成する必要はなく、フィルム又はシートの横方向に一定間隔をあけて作成することが出来る。また、テープをはみ出させる縦巾は上記範囲内の接着強度が得られれば、特に制限されないが、リード紙の先端部3aから0.1cm〜5cmの範囲が好ましい。更に好ましくは0.5cm〜2cmの範囲である。はみ出す縦巾が狭すぎると接着が不十分となる危険性が生じる。一方、接着の縦巾が広すぎても経済的に好ましくないばかりか、再剥離しにくくなる。
【0022】
3つ目の方法としては、リード紙3の先端部分裏面に、少なくとも一方の面が再剥離可能である両面テープを用いることで接着部4を作成し、接着させる方法である。両面テープの少なくとも一方の面が再剥離可能であれば、リード紙3の先端部分裏面にどちらの面を接着しても問題はない。また、上記範囲内の接着強度が得られれば、どの様なタイプの両面テープも用いることが可能であるが、接着強度の差が小さい場合には印刷時、再剥離する時に両面テープの片側のみがスムーズに剥がれにくくなるため好ましくない。好ましくは、接着強度比が各面で2倍以上あることが好ましい。例えば、寺岡製作所株式会社製の両面テープ品番No.7691が挙げられる。両面テープは、上記範囲内の接着強度が得られれば、先端部分の横巾全部に貼りつける必要はなく、フィルム又はシートの横方向に一定間隔をあけて接着することも出来る。また、両面テープを用いて接着する縦巾は上記範囲内の接着強度が得られれば、特に制限されないが、先端部分内に0.1cm〜5cmの範囲が好ましい。更に好ましくは0.1cm〜1cmの範囲である。両面テープ巾を貼り付ける縦巾が狭すぎると接着が不十分となる危険性が生じる。一方、縦巾が広すぎると経済的に好ましくないばかりか、再剥離しにくくなる。
【0023】
4つ目の方法としては、リード紙3の先端部分裏面に層間剥離する素材を用いて接着部4を作成し、接着させる方法である。層間剥離強度は、0.25N/m〜50N/m、好適には0.5N/m〜25N/m、更に好適には0.5N/m〜15N/mであり、最も好適な範囲としては0.5N/m〜5N/mである。層間剥離素材とリード紙間の接着強度と、層間剥離する層の強度差が小さい場合、印刷時再剥離させる時にきれいに層間剥離し難くなるため好ましくない。このため、層間剥離素材とリード紙間の接着強度が、層間剥離強度の2倍以上であることが好ましい。上記範囲内の層間剥離強度が得られれば、先端部分の横巾全部に貼り付ける必要はなく、フィルム又はシートの横方向に一定間隔をあけて貼り付けすることも出来る。また、接着する縦巾は上記範囲内の層間剥離強度が得られれば、特に制限されないが、先端部分内に0.1cm〜10cmの範囲が好ましい。更に好ましくは0.5cm〜3cmの範囲である。接着させる縦巾が狭すぎると接着強度が不十分となる危険性が発生する。一方、接着の縦巾が広すぎると経済的に好ましくない。
【0024】
本発明の筒状支持体1は、リード紙3の最外層にフィルム又はシートを接合させるための接合部6を作成する。但し、接合部6を筒状支持体の全周にわたって作成してしまうと、印刷時に再剥離出来なくなってしまうため、少なくともリード紙3最外層の一部には接合されない部分が必要であり、特にリード紙3の先端部分にのみ作成することが好ましい。
【0025】
また、接合部6は、十分な接着強度を有するものであればどの様なものでも使用することが出来るが、印刷時のテンションに十分耐える接着強度が必要であることから、リード紙3とフィルム又はシート5は、十分な強度で接合させる必要がある。好ましくは接着強度が73N/m以上、更に好ましくは196N/m以上である。
【0026】
筒状支持体1とリード紙3との接着方法は特に制限されないが、両面テープで接着させることが好ましい。両面テープを用いて接着する縦巾は上記接着強度が得られれば、特に制限されないが、先端部分内の1cm〜10cmが好ましい。更に好ましくは2cm〜5cmの範囲である。接着させる縦巾が狭すぎると接着強度が不十分となる危険性が発生する。一方、縦巾が広すぎると経済的に好ましくない。また、上記範囲内の接着強度が得られれば、先端部分の横巾全部に貼りつける必要はなく、フィルム又はシートの横方向に一定間隔をあけて貼付けすることも出来る。
【0027】
本発明の筒状支持体1を用いて、フィルム又はシートを巻き取る方法は、フィルム又はシートの先端3a部と、筒状支持体1上の接合部6とを接合させた後は、通常の筒状支持体を用いて巻取りを行う場合と同様に、筒状支持体1を回転させながらフィルムやフィルム又はシートを巻き取ることができる。
【0028】
【発明の効果】
本発明の筒状支持体は、フィルム又はシート生産時にリード紙を付与したものであり、印刷時にリード紙を付与するための巻き直し工程を行う必要がない。しかも、フィルム又はシート製造時において通常の巻き取り装置を用いて巻き取ることが可能であり、コスト的にも非常に安価に製造することが可能な筒状支持体、及びその筒状支持体を用いてフィルムやフィルム又はシートを巻き取る方法を提供するものである。本筒状支持体、及びフィルムやフィルム又はシートを巻き取る方法は、製品長が規格統一されているなど、一定の印刷長の製品が求められる印刷用途にも好適に用いることができる。
【0029】
【実施例】
以下、実施例によって本発明を更に具体的に説明するが、本発明はこれらに限定されるものではない。尚、接着強度及び剥離強度測定は次の方法に従って行った。
(1)180度剥離試験
JIS−K−6854に準じた測定方法により、試験速度50mm/分として測定を行った。
【0030】
実施例−1
図2に記載されるように、米谷紙管株式会社製の紙製筒状支持体(芯管2;内径76mm、厚さ10mm)と、大王製紙株式会社製クラフト紙(リード紙3;目付け80g/m2)の終端部3bとを両面テープ(寺岡製作所株式会社製:製品番号No.7644)を用いて接着し、芯管2にリード紙3を60m巻きつけを行った。
【0031】
次に図3に示すように、筒状支持体1のリード紙3の先端部分裏面に再剥離可能な接着剤(住友スリーエム株式会社製スプレーのりタイプ66)を巾縦約3cm、横全巾にわたって塗布し、接着部4を作成した。
【0032】
その次に、図4に示すようにシートを接合するために、筒状支持体1の先端部分表面に両面テープ(寺岡製作所株式会社製:製品番号No.7644)を横全巾にわたって貼り付け、接合部6を作成した。
【0033】
この筒状支持体1を用いて、通常の筒状支持体と同様の要領で厚さ0.25mm、巾1m、長さ800mのシートを巻き取った。このときの接着部4とフィルム又はシートの関係を図8、そのX−Y断面図を図9に示す。筒状支持体への巻き取りは図6に示すように接着部が剥れずに、通常の筒状支持体の場合と同様、シワやムラが生じず、スムーズに行うことができた。更に、このロールを用いて印刷したところ、図7に示すようにシート5とリード紙3の接着部4は、スムーズに再剥離した。シート部分の印刷が完全に終わり、リード紙が印刷機を通過している状態で印刷を停止して、シートの継ぎ替え、位置合わせが出来ることから、印刷したシートの長さは一定のものを得ることが出来た。
【0034】
実施例−2
実施例−1と同様に、リード紙を80m巻きつけた筒状支持体1を得た。そして、リード紙3の先端部3aに図5に示すように、再剥離可能な片面テープ(住友スリーエム株式会社製はってはがせるテープタイプ811)(巾18mm)を先端部3aに一定間隔で貼りつけた。更に、シート5の接着のために、リード紙先端部分表面に両面テープを全横巾にわたって貼り付け、接合部6を作成した。実施例−1と同様にシートを巻き取った。このときの接着部4とフィルム又はシートの断面図を図10に示す。また、実施例−1と同様に印刷を行ったが通常の筒状支持体を用いた場合同様に良好な結果を得た。印刷したシートの長さも一定のものを得ることが出来た。
【0035】
実施例−3
実施例−1と同様に、リード紙を80m巻きつけた筒状支持体1を得た。そして、リード紙3の先端部3aに再剥離可能な片面テープ(住友スリーエム株式会社製はってはがせるテープタイプ811)(巾18mm)を横全巾にわたって貼りつけた。更に、シート5の接着のためにリード紙先端部分表面に両面テープを全横巾にわたって貼り付け、接合部6を作成した。実施例−1、2と同様にシートの巻きつけ、印刷は良好に行われた。
【0036】
実施例−4
日本オフィスラミネータ株式会社のハクリラミフィルムを大王製紙株式会社製クラフト紙(目付け80g/m2)の間に挟みこみ、ラミネータを用いて完全に接着させ、層間剥離可能な素材を得た。実施例−1と同様に、リード紙を80m巻きつけた筒状支持体1を得た。そして、先端部分裏面と、その下層リード紙とを、上記方法により得られた層間剥離可能な素材の両面に接着剤を付け、貼り合わせた。更に、シート5の接着のためにリード紙先端部分表面に両面テープを全横巾にわたって貼り付け、接合部6を作成した。実施例−1〜3と同様にシートの巻きつけ、印刷は良好に行われた。
【0037】
比較例−1
実施例−1と同様にして、リード紙を60m巻きつけた筒状支持体1を得た。そして、リード紙の先端部分裏面に、接着部4を形成せずに、先端部分表面に両面テープ(寺岡製作所株式会社製:製品番号No.7644)を横全巾にわたって貼付け、接合部6を形成した。実施例と同様にシートの巻きつけを試みたが、フィルム又はシートにシワが生じてしまい、巻き付けがうまく行われなかった。
【0038】
比較例−2
実施例−1と同様にして、リード紙を60m巻きつけた筒状支持体1を得た。そして、リード紙の先端部分裏面に、両面テープ(接着強度58.8N/m)を横全巾にわたって貼付け、接着部4を作成した。更に、シート5の接着のためにリード紙先端部分表面に両面テープを全横巾にわたって貼り付け、接合部6を作成した。実施例と同様、シートの巻きつけは問題なく出来たが、印刷時にはリード紙が破断してしまい、リード紙を繰り出し出来なかった。
【図面の簡単な説明】
【図1】本発明の一例である筒状支持体の斜視図。
【図2】筒状支持体の構成を示す説明図。
【図3】筒状支持体及び接着部を示す説明図。
【図4】筒状支持体とフィルム又はシートの貼付けを示す説明図。
【図5】実施例2記載の本発明の一例である筒状支持体の斜視図。
【図6】フィルム又はシート生産時の巻取り工程を示す説明図。
【図7】印刷時における巻取り工程を示す説明図。
【図8】筒状支持体とフィルム又はシートを貼りつけた状態を示す斜視図。
【図9】実施例1におけるX‐Y断面図。
【図10】実施例2におけるX‐Y断面図。
【符号の説明】
1 筒状支持体
2 芯管
3 リード紙
3a リード紙先端部
3b リード紙終端部
3L 最外層より下層のリード紙
4 再剥離可能な接着部
5 フィルム又はシート
6 リード紙とフィルム又はシートの接合部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cylindrical support for winding a film or sheet, and a method for winding a film or sheet using the cylindrical support. In particular, it can be suitably used as a cylindrical support for a printing resin film or sheet.
[0002]
[Prior art]
Conventionally, in a rotary printing press using a film or sheet (hereinafter referred to as a roll) wound up in a spiral shape, it is connected to a new roll before the roll being printed disappears, and there is no interruption due to roll breakage. (For example, JP-A-6-171067, JP-A-7-232845, and JP-A-7-237792). Alternatively, a method is used in which a lead paper is pasted between rolls, passed through a printing line, and when the lead paper is in the printing machine, the printing position of the film or sheet is completely aligned before printing.
[0003]
[Problems to be solved by the invention]
In the former method, a slight deviation is likely to occur when the films or sheets are joined together, and the next roll immediately after the paster during the paster (transfer of the sheet or film from the roll being printed to the next new roll). There was a problem that a large misalignment occurred in the first printed part. Large image misalignment that occurred after roll change had to be gradually adjusted, and a large amount of defective printing was performed before the adjustment was completed, so there was a lot of waste and there was often a variation in the length of each product. . Therefore, when the product length has a standard like a carrier tape, it is difficult to apply the above method.
[0004]
On the other hand, when the latter method is used, the lead paper is pasted between rolls and passed through the printing line, so when there is lead paper in the printing machine, the sheet is printed after the printing position is completely aligned. In addition, printing defects are unlikely to occur in the film or sheet, and a fixed film or sheet length after printing can be obtained. However, it is necessary to attach lead paper to a film or sheet in advance before printing. Although it is possible to attach the film or sheet and the lead paper by using a paper splicing method as described in JP-A-7-101603, it is very time-consuming. However, when there is a standard for the product length, such a method has been taken for many years because there is a merit in cost compared with a large loss due to the failure to obtain a product of the specified length.
[0005]
Therefore, an object of the present invention is a cylindrical support provided with lead paper in advance at the time of film or sheet production, and can be wound using a normal winding device at the time of film or sheet production. It is to provide a cylindrical support that can be manufactured at a very low cost without causing any trouble during the printing process, and a method of winding a film or sheet using the cylindrical support. .
[0006]
[Means for Solving the Problems]
As a result of intensive studies to solve the above problems, the present inventors have found that the tensile strength applied to the film or sheet is different between the winding process at the time of manufacturing the film or sheet and the winding process at the time of printing. . Then, by utilizing this difference in tensile strength, the lead paper is fixed to the cylindrical support at the time of manufacturing the film or sheet, and the film or sheet can be wound up in the same process as the normal cylindrical support. In addition, at the time of printing, the lead paper is automatically fed out, and a cylindrical support that can be used as a film or sheet with the lead paper, and a film, film, or sheet using the cylindrical support. The present invention was completed by a winding method.
[0007]
That is, the first aspect of the present invention is a cylindrical support 1 for winding up a film or sheet comprising the core tube 2, the lead paper 3, and the adhesive portion 4,
a. The lead paper 3 is used to guide the film or sheet to the guide roll of the printing machine during printing.
b. The lead paper 3 is wound around the core tube 2,
c. A joint 6 is provided on the surface of the leading end of the lead paper 3, and a film or sheet 5 is joined.
d. It has a releasable adhesive part 4 at the tip of the lead paper 3,
e. The bonding portion 4 and the lower lead paper 3L are bonded,
f. The adhesive strength of the landing portion 4 is 0.5 N / m to 50 N / m.
A cylindrical support 1 in which a core tube 2 and lead paper 3 are integrated.
[0008]
The second aspect of the present invention is a cylindrical support 1 that uses a paper or plastic material as the lead paper 3.
[0009]
A third aspect of the present invention is a method for winding a film or sheet while rotating the cylindrical support 1 using the cylindrical support 1.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The core tube 2 is not particularly limited in material and size as long as it has sufficient strength and functionality to wind up a film or sheet. For example, it is made of paper (inner diameter is about 75 mm, outer diameter is about 92 mm) called a 3 inch paper tube generally used for winding sheets and films. Further, depending on the case, there is no problem even if it is made of plastic or metal.
[0011]
The lead paper 3 wound around the core tube is used to guide the film or sheet to the guide roll of the printing machine during printing, and needs to have a sufficient length. If the lead paper length is too short, when the film or sheet is switched, the lead paper is lost before the printing position is aligned, and printing must be performed on the film or sheet with insufficient alignment. On the other hand, if the length of the lead paper is too long, an extra time for feeding out the lead paper is required, which lowers the work efficiency. The appropriate length of the lead paper varies depending on the printing equipment and the number of colors to be printed, but 30 to 80 m is preferable in consideration of a general printing process.
[0012]
Since the lead paper 3 stays in the drying process at the time of printing alignment and may receive heat for a long time, sufficient heat resistance is required. Usually, since drying is performed at about 60 to 150 ° C., even general paper has sufficient heat resistance, but it is preferable to use a heat-resistant material particularly when passing through a high-temperature drying step. It is also possible to use a plastic material such as a biaxially stretched polyester film.
[0013]
Since the lead paper 3 receives the same tension as the film or sheet when passing through the printing press, it needs to have sufficient strength. When printing a 200μm about film or sheet, and more if it is often generally used paper or film of 20g / m 2 ~150g / m 2 about basis weight, to be printed thicker films or sheets this Since printing is performed with a strong tension, it is necessary to select one having higher strength.
[0014]
The width of the lead paper 3 is preferably almost the same as the width of the film or sheet or the width of the core tube 2 in view of printing misalignment and handling. The lead paper 3 needs to be bonded to the core tube 2 with sufficient strength. The adhesive strength is preferably 73 N / m or more, and more preferably 196 N / m or more. If the adhesive strength is insufficient, the film or sheet cannot be wound. As long as the adhesive strength is sufficient, any method such as a pressure-sensitive adhesive tape, an adhesive, or a double-sided tape may be used as the bonding method.
[0015]
The cylindrical support 1 according to the present invention is an integral unit of the core tube 2 and the lead paper 3 by adhering the bonding portion 4 at the tip of the lead paper 3 to the underlying lead paper by various methods. Thus, it is possible to wind up the film or sheet in the same manner as a normal cylindrical support during the production of the film or sheet. On the other hand, at the time of printing, the leading end portion of the lead paper 3 is peeled without breaking, and the lead paper is fed out. Here, for convenience, the winding direction of the lead paper and the film or sheet is defined as the vertical direction, and the direction perpendicular to the winding direction is defined as the horizontal direction. Further, the leading end portion refers to a belt-like region extending 20 cm in the vertical direction from the leading end portion 3a of the lead paper.
[0016]
When the adhesive strength of the adhesive portion 4 at the tip portion is insufficient, the adhesive portion 4 is peeled off when the film or sheet is wound, and the film or sheet cannot be wound. Therefore, the adhesive strength required for the adhesive part 4 is 0.25 N / m or more, preferably 0.5 N / m or more.
[0017]
On the other hand, if the adhesive strength is too strong, it is difficult to re-peel at the time of printing, and the lead paper 3 may cause troubles such as breakage in some cases. Therefore, the adhesive strength of the adhesive part 4 is 50 N / m or less, preferably 25 N / m or less.
[0018]
Accordingly, the adhesive strength of the adhesive portion 4 at the tip portion varies depending on the material and strength of the lead paper 3, but is 0.25 N / m to 50 N / m, preferably 0.5 N / m to 25 N / m, and more preferably. Is 0.5 N / m to 15 N / m, and the most preferable range is 0.5 N / m to 5 N / m. When a high strength PET film is used for the lead paper 3, it is difficult to tear and can be peeled again even if it is bonded with an adhesive strength higher than the above range, but it sticks to the guide roll of the printing press during printing. There is a tendency for troubles due to heat to occur easily.
[0019]
The following four methods are conceivable as specific methods for bonding the bonding portion 4 at the tip of the present invention to the lower lead paper 3L, but the present invention is not limited to the following method.
[0020]
As a first method, the adhesive portion 4 is created and adhered by applying a re-peelable adhesive to the back surface of the tip portion. As long as it is a releasable adhesive, it may be in any form such as a liquid coating method or a spray coating method. For example, spray paste type 55 and type 66 manufactured by Sumitomo 3M Limited may be mentioned. As long as the adhesive strength within the above range can be obtained, the adhesive need not be applied to the entire width of the tip portion, and can be applied at regular intervals in the lateral direction of the film or sheet. Further, the vertical width for applying the adhesive is not particularly limited as long as the adhesive strength within the above range is obtained, but it is preferably applied within the range of 0.1 cm to 20 cm, more preferably 1 cm to the tip portion. The range is 5 cm. If the vertical width to which the adhesive is applied is too narrow, there is a risk of insufficient adhesion. On the other hand, if the longitudinal width to be bonded is too wide, it is not economically preferable, and it becomes difficult to peel again.
[0021]
As a second method, as shown in FIG. 10, a bonding portion 4 is created by adhering a single-sided tape to the leading end portion of the lead paper 3 so that a part thereof protrudes from the leading end portion 3a. is there. Any single-sided tape can be used as long as the adhesive strength is obtained. For example, the tape type 811 which can be peeled off by Sumitomo 3M Co., Ltd. is mentioned. As in the case where the adhesive is applied, the adhesive portion 4 does not need to be formed on the entire width of the tip portion as shown in FIG. 5 as long as the adhesive strength within the above range is obtained. Can be created at regular intervals in the horizontal direction. Further, the vertical width for protruding the tape is not particularly limited as long as the adhesive strength within the above range can be obtained, but it is preferably in the range of 0.1 cm to 5 cm from the leading edge 3a of the lead paper. More preferably, it is the range of 0.5 cm-2 cm. If the protruding vertical width is too narrow, there is a risk of insufficient adhesion. On the other hand, if the vertical width of the adhesive is too wide, it is not economically preferable, and it becomes difficult to peel again.
[0022]
As a third method, a bonding portion 4 is created and bonded to the back surface of the leading end portion of the lead paper 3 by using a double-sided tape whose at least one surface is removable. As long as at least one surface of the double-sided tape can be re-peeled, there is no problem even if either surface is bonded to the back surface of the leading end portion of the lead paper 3. In addition, any type of double-sided tape can be used as long as the adhesive strength within the above range is obtained. However, when the difference in adhesive strength is small, only one side of the double-sided tape is used for printing or re-peeling. Is not preferable because it is difficult to peel off smoothly. Preferably, the adhesive strength ratio is at least twice as large on each side. For example, Teraoka Seisakusho's double-sided tape product no. 7691. As long as the adhesive strength within the above range is obtained, the double-sided tape does not need to be attached to the entire width of the tip portion, and can be adhered at a certain interval in the lateral direction of the film or sheet. Moreover, the vertical width bonded using the double-sided tape is not particularly limited as long as the adhesive strength within the above range can be obtained, but the range of 0.1 cm to 5 cm is preferable in the tip portion. More preferably, it is the range of 0.1 cm-1 cm. If the vertical width for applying the double-sided tape width is too narrow, there is a risk of insufficient adhesion. On the other hand, if the vertical width is too wide, it is not economically preferable, and it becomes difficult to peel again.
[0023]
As a fourth method, a bonding portion 4 is created and bonded to the back surface of the leading end portion of the lead paper 3 using a material that delaminates. The delamination strength is from 0.25 N / m to 50 N / m, preferably from 0.5 N / m to 25 N / m, more preferably from 0.5 N / m to 15 N / m. 0.5 N / m to 5 N / m. If the difference between the adhesive strength between the delamination material and the lead paper and the strength of the delamination layer is small, it is not preferable because delamination is difficult when re-peeling during printing. For this reason, it is preferable that the adhesive strength between the delamination material and the lead paper is at least twice the delamination strength. If delamination strength within the above range is obtained, it is not necessary to apply the entire width of the tip portion, and it is also possible to apply the film or sheet at a predetermined interval in the horizontal direction. The longitudinal width to be bonded is not particularly limited as long as the delamination strength within the above range can be obtained, but a range of 0.1 cm to 10 cm is preferable in the tip portion. More preferably, it is the range of 0.5 cm-3 cm. If the longitudinal width to be bonded is too narrow, there is a risk that the bonding strength becomes insufficient. On the other hand, if the vertical width of the bonding is too wide, it is not economically preferable.
[0024]
The cylindrical support 1 of the present invention creates a joint 6 for joining a film or sheet to the outermost layer of the lead paper 3. However, if the joint portion 6 is created over the entire circumference of the cylindrical support, it cannot be re-peeled during printing, and therefore at least a portion that is not joined to the outermost layer of the lead paper 3 is necessary. It is preferable to create only at the leading end portion of the lead paper 3.
[0025]
In addition, the joining portion 6 can be any material as long as it has sufficient adhesive strength, but since it needs adhesive strength that can sufficiently withstand the tension during printing, the lead paper 3 and film Or it is necessary to join the sheet | seat 5 with sufficient intensity | strength. The adhesive strength is preferably 73 N / m or more, and more preferably 196 N / m or more.
[0026]
The method for adhering the cylindrical support 1 and the lead paper 3 is not particularly limited, but it is preferable to adhere the double-sided tape. Although the vertical width | variety bonded using a double-sided tape will not be restrict | limited especially if the said adhesive strength is obtained, 1 cm-10 cm in a front-end | tip part are preferable. More preferably, it is the range of 2 cm-5 cm. If the longitudinal width to be bonded is too narrow, there is a risk that the bonding strength becomes insufficient. On the other hand, if the vertical width is too wide, it is not economically preferable. Moreover, if the adhesive strength in the said range is obtained, it is not necessary to affix on the whole width of a front-end | tip part, and it can also affix on the horizontal direction of a film or a sheet | seat at regular intervals.
[0027]
The method of winding up a film or a sheet using the cylindrical support 1 of the present invention is the usual method after joining the tip 3a of the film or sheet and the joint 6 on the cylindrical support 1. As in the case of winding using a cylindrical support, a film, film or sheet can be wound while rotating the cylindrical support 1.
[0028]
【The invention's effect】
The cylindrical support of the present invention is provided with lead paper during film or sheet production, and does not require a rewinding process for applying lead paper during printing. Moreover, a cylindrical support that can be wound using a normal winding device at the time of manufacturing a film or sheet and can be manufactured at a very low cost, and the cylindrical support are provided. The present invention provides a method for winding a film or film or sheet. The cylindrical support and the method of winding a film, film or sheet can be suitably used for printing applications where a product with a certain printing length is required, for example, the product length is standardized.
[0029]
【Example】
EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited thereto. The measurement of adhesive strength and peel strength was performed according to the following method.
(1) 180 degree peeling test It measured by the measuring method according to JIS-K-6854 as test speed 50mm / min.
[0030]
Example-1
As shown in FIG. 2, a paper cylindrical support manufactured by Yoneya Paper Tube Co., Ltd. (core tube 2; inner diameter 76 mm, thickness 10 mm), and kraft paper manufactured by Daio Paper Co., Ltd. (lead paper 3; basis weight 80 g) / M 2 ) end portion 3b was bonded using a double-sided tape (manufactured by Teraoka Seisakusho Co., Ltd .: product number No. 7644), and the lead paper 3 was wound around the core tube 2 by 60 m.
[0031]
Next, as shown in FIG. 3, a removable adhesive (spray glue type 66 manufactured by Sumitomo 3M Co., Ltd.) is applied to the back surface of the leading end portion of the lead paper 3 of the cylindrical support 1 over a width of about 3 cm and a width of the whole. It apply | coated and the adhesion part 4 was created.
[0032]
Next, in order to join the sheets as shown in FIG. 4, a double-sided tape (manufactured by Teraoka Seisakusho Co., Ltd .: product number No. 7644) is applied across the entire width of the front surface of the cylindrical support 1. A joint 6 was created.
[0033]
Using this cylindrical support 1, a sheet having a thickness of 0.25 mm, a width of 1 m, and a length of 800 m was wound up in the same manner as a normal cylindrical support. FIG. 8 shows the relationship between the adhesive portion 4 and the film or sheet at this time, and FIG. 9 shows an XY sectional view thereof. As shown in FIG. 6, the winding to the cylindrical support was not peeled off, and as with the normal cylindrical support, wrinkles and unevenness did not occur and could be performed smoothly. Furthermore, when printing was performed using this roll, as shown in FIG. 7, the adhesive portion 4 between the sheet 5 and the lead paper 3 was peeled off smoothly. Since the printing of the sheet part is completely completed and the printing is stopped with the lead paper passing through the printing machine, the sheet can be replaced and aligned, so the length of the printed sheet should be constant. I was able to get it.
[0034]
Example-2
In the same manner as in Example-1, a cylindrical support 1 in which 80 m of lead paper was wound was obtained. Then, as shown in FIG. 5, a releasable single-sided tape (a tape type 811 that can be peeled off from Sumitomo 3M Limited) (width 18 mm) is applied to the leading end 3a of the lead paper 3 at regular intervals. Wearing. Furthermore, in order to adhere the sheet 5, a double-sided tape was applied to the surface of the leading end portion of the lead paper over the entire width, and the joint portion 6 was created. The sheet was wound up in the same manner as in Example-1. FIG. 10 shows a cross-sectional view of the adhesive portion 4 and the film or sheet at this time. Further, printing was performed in the same manner as in Example 1, but good results were obtained in the same manner when a normal cylindrical support was used. A printed sheet with a constant length could be obtained.
[0035]
Example-3
In the same manner as in Example-1, a cylindrical support 1 in which 80 m of lead paper was wound was obtained. Then, a single-sided tape (tape type 811 that can be peeled off, manufactured by Sumitomo 3M Limited) (width: 18 mm) (width 18 mm) was attached to the leading end 3a of the lead paper 3 across the entire width. Further, a double-sided tape was applied to the surface of the leading end portion of the lead paper for bonding the sheet 5 over the entire width, and the joint portion 6 was created. The sheet was wound and printed in the same manner as in Examples-1 and 2.
[0036]
Example-4
A hakurarami film of Nippon Office Laminator Co., Ltd. was sandwiched between kraft papers manufactured by Daio Paper Co., Ltd. (weighing 80 g / m 2 ), and completely adhered using a laminator to obtain a delaminated material. In the same manner as in Example-1, a cylindrical support 1 in which 80 m of lead paper was wound was obtained. Then, the back surface of the tip portion and the lower layer lead paper were bonded to each other on both surfaces of the delaminated material obtained by the above method. Further, a double-sided tape was applied to the surface of the leading end portion of the lead paper for bonding the sheet 5 over the entire width, and the joint portion 6 was created. The sheet was wound and printed in the same manner as in Examples-1 to 1-3.
[0037]
Comparative Example-1
In the same manner as in Example-1, a cylindrical support 1 in which 60 m of lead paper was wound was obtained. Then, a double-sided tape (manufactured by Teraoka Seisakusho Co., Ltd .: product number No. 7644) is applied to the front surface of the front end portion over the entire width without forming the adhesive portion 4 on the back surface of the front end portion of the lead paper, thereby forming the joint portion 6. did. The sheet was tried to be wound in the same manner as in the example, but the film or sheet was wrinkled, and the winding was not performed well.
[0038]
Comparative Example-2
In the same manner as in Example-1, a cylindrical support 1 in which 60 m of lead paper was wound was obtained. And the double-sided tape (adhesion strength 58.8N / m) was affixed over the full width to the front-end | tip part back surface of lead paper, and the adhesion part 4 was created. Further, a double-sided tape was applied to the surface of the leading end portion of the lead paper for bonding the sheet 5 over the entire width, and the joint portion 6 was created. As in the example, the sheet could be wound without any problem, but the lead paper was broken during printing, and the lead paper could not be fed out.
[Brief description of the drawings]
FIG. 1 is a perspective view of a cylindrical support that is an example of the present invention.
FIG. 2 is an explanatory view showing a configuration of a cylindrical support.
FIG. 3 is an explanatory view showing a cylindrical support and an adhesive portion.
FIG. 4 is an explanatory view showing the attachment of a cylindrical support and a film or sheet.
5 is a perspective view of a cylindrical support that is an example of the present invention described in Embodiment 2. FIG.
FIG. 6 is an explanatory diagram showing a winding process during film or sheet production.
FIG. 7 is an explanatory diagram showing a winding process during printing.
FIG. 8 is a perspective view showing a state where a cylindrical support and a film or sheet are attached.
9 is a cross-sectional view taken along line XY in Example 1. FIG.
10 is a sectional view taken along line XY in Example 2. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cylindrical support body 2 Core tube 3 Lead paper 3a Lead paper front-end | tip part 3b Lead paper termination | terminus part 3L Lead paper lower than outermost layer 4 Removable adhesion part 5 Film or sheet 6 Joint part of lead paper and film or sheet

Claims (3)

芯管2、リード紙3及び接着部4からなるフィルム又はシートを巻き取るための筒状支持体1であって、
a.リード紙3は印刷中、印刷機のガイドロールへフィルム又はシートを導くために使用するものであり、
b.芯管2にリード紙3が巻き取られており、
c.リード紙3先端部分表面に接合部6を設け、フィルム又はシート5を接合し、
d.リード紙3の先端部分に再剥離可能な接着部4を有し、
e.接着部4と下層のリード紙3Lとが接着され、
f.着部4の接着強度が0.5N/m〜50N/mである、
芯管2とリード紙3が一体となった筒状支持体1。
A cylindrical support 1 for winding up a film or sheet comprising a core tube 2, lead paper 3 and an adhesive portion 4,
a. The lead paper 3 is used to guide the film or sheet to the guide roll of the printing machine during printing.
b. The lead paper 3 is wound around the core tube 2,
c. A joint 6 is provided on the surface of the leading end of the lead paper 3, and a film or sheet 5 is joined.
d. It has a releasable adhesive part 4 at the tip of the lead paper 3,
e. The bonding portion 4 and the lower lead paper 3L are bonded,
f. The adhesive strength of the landing portion 4 is 0.5 N / m to 50 N / m.
A cylindrical support 1 in which a core tube 2 and lead paper 3 are integrated.
リード紙3として紙又はプラスチック製の素材を用いる請求項1又は2に記載の筒状支持体1。The cylindrical support 1 according to claim 1 or 2, wherein a paper or plastic material is used as the lead paper 3. 請求項1、又は2記載の筒状支持体1を用い、筒状支持体1を回転させながらフィルム又はシートを巻き取る方法。A method of winding up a film or a sheet while rotating the cylindrical support 1 using the cylindrical support 1 according to claim 1.
JP2002188982A 2002-06-28 2002-06-28 Cylindrical support and film or sheet winding method using the support Expired - Fee Related JP3811666B2 (en)

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