JP4372884B2 - Reinforcing material sticking device - Google Patents

Reinforcing material sticking device Download PDF

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Publication number
JP4372884B2
JP4372884B2 JP07293699A JP7293699A JP4372884B2 JP 4372884 B2 JP4372884 B2 JP 4372884B2 JP 07293699 A JP07293699 A JP 07293699A JP 7293699 A JP7293699 A JP 7293699A JP 4372884 B2 JP4372884 B2 JP 4372884B2
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reinforcing material
self
bag
film
roll
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JP2000238796A (en
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敬史 大橋
泰造 岩村
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861Spouts
    • B65D75/5872Non-integral spouts
    • B65D75/5883Non-integral spouts connected to the package at the sealed junction of two package walls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2575/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D2575/52Details
    • B65D2575/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D2575/583Opening or contents-removing devices added or incorporated during package manufacture the non-integral spout having an elongate cross-sectional shape, e.g. canoe or boat shaped

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、強材の貼着装置に関する。
【0002】
【従来の技術】
柔軟な積層体からなる袋を内容物を充填した状態において自立性を持たせるために種々の製袋形式の提案がされている。その形式から、例えば、図8(a)に示すスタンディングパウチ30、図8(b)に示すサイドガセット式自立袋40、図8(c)に示す上下ガセット付き自立袋60等が一般的に使用されている。柔軟な複合フィルムから形成された自立袋としては、前記各種の自立袋のなかで、特にサイドガセットタイプの自立袋30は、自立させた際に自立性が劣り、また、その胴部が膨らむ現象があった。
【0003】
【発明が解決しようとする課題】
例えば、前記サイドガセットタイプの自立袋において、自立性を重視した場合、前記複合フィルムの剛性を大きくすることは有効である。しかし、複合フィルムの剛性を大きくするためには、前記複合積層体の一部の層または構成する層全部の層の厚さを増すことになって、コストのアップとなり、また、熱接着の条件としては、シール時間が長くかかり、生産の効率が低下することになる。
また、従来の自立袋においては、内容物を取り出す時に、袋の胴部を手で掴むと前記積層体が柔軟であるために持ち難さがあり、また、内容物が、液体または粘性体である場合には、袋を手で掴んだ瞬間に内容物が飛び出してしまうことがある。
本発明は、柔軟な複合フィルムからなる自立性がよく、且つ、手で持ちやすく、使用性のよい自立袋およびその製造方法等を提供することである。
【0004】
【課題を解決するための手段】
本発明は、強材の基体の表面に絵柄が設けられ、他面に感熱粘着剤を塗布乾燥したロール状の補強材の供給と該ロール状の補強材から所定の形状の補強材とする打ち抜き部、打ち抜かれた補強材をコンベア上に前記感熱粘着剤の塗布面を上に排出する供給部、移送コンベアおよび前記いずれかの位置に設けられる感熱粘着剤の活性化部、前記コンベアの先端に自立袋を形成する複合フィルムを積層したロール状フィルムを連続的または間欠的に移動させる巻き返し機、前記巻き返し機における前記ロール状フィルムの流れ位置を検知し、タイミングをとって前記複合フィルムの所定の位置に補強材を貼着する機能の貼着部から構成される補強材の貼着装置である。
【0005】
【発明の実施の形態】
本発明の自立袋は少なくとも2層以上の複合フィルムを用いて製袋されてなり、自立させた前記自立袋側壁部に相当する部位に、補強材を貼着することによって、自立性を向上させるものである。前記補強材の貼着は、前記複合フィルムの外面に貼着するまたは前記前記複合フィルムの層間に挟入するものである。前記補強材は、そのいずれかの面に粘着剤が塗布されているものである。
図1は、本発明の自立袋の実施例を示す、(a)斜視図、(b)注出口を装着した斜視図、(b)本発明の自立袋の別の実施例を示す斜視図である。図2は、本発明の自立袋の構造を説明する、(a)図1におけるX1 −X1 部断面図、(b)Y部拡大図で補強材を複合フィルムの層間に設けた例、(c)Y部拡大図で補強材を複合フィルムの外面に貼着した例、(d)積層体の展開図である。図3は、本発明の自立袋の別の構造を説明する、(a)図1(c)のX2 −X2 部断面図、(b)Y部拡大図で補強材を複合フィルムの層間に設けた例、(c)Y部拡大図で補強材を複合フィルムの外面に貼着した例、(d)前面部材または後面部材の正面図、(e)側面部材の正面図である。(f)製袋時の各部材の位置を示す上面図である。図4は、本発明の自立袋を形成する積層体の実施例を示す、(a)補強部、(b)非補強部のそれぞれの断面図である。図5は、本発明の自立袋を形成する別の積層体の実施例を示す、(a)補強部、(b)非補強部のそれぞれの断面図である。図6は、本発明の自立袋の補強材の貼着工程に用いる装置の実施例を示す、(a)装置の概念図、(b)Y3 部拡大図である。
図7は、本発明の自立袋に装着する注出口についての説明図で、(a)実施例を示す、注出口本体、蓋体、及び装着する袋の一部を示す斜視図、(b)注出口の別の実施例を示す斜視図である。
【0006】
本発明の自立袋は、図1(a)に示すように、側壁部に補強材10aが貼着しているもので、貼着は、袋の外面であってもよいし、また袋を形成する複合フィルムの層間であってもよい。
例えば,従来のサイドガセットタイプの自立袋は、柔軟な複合フィルムからなる前面部材、後面部材、側面部材とからなり、該自立袋に内容物を充填して自立させた時に側壁部が膨らみ自立性が悪いケースが多かった。
そこで、本発明者は、前記複合フィルムの自立袋とした時に側壁部に位置する部位の層間に紙等の剛性を有する材料からなる補強材を挟着するかまたは、複合フィルムの外面に補強材を貼着することによって、自立袋の自立性を向上させることが可能であることに想到し、種々の検討、実験を行い、本発明を完成した。
【0007】
本発明の自立袋における補強材の貼着は、図1(a)または図1(b)に示すように、自立袋の周囲全体に貼着してもよいし、図1(c)に示すように、自立袋の前面、後面および側面の端部を除いてそれぞれに設けてもよい、
例えば、前記自立袋の周囲全体に補強材を貼着する場合には、図2(b)に示すように折り罫7を設けて袋の形成を容易にする。
また、前記自立袋の前面、後面および側面の端部を除いてそれぞれに補強材を設けるには、図3(d)、図3(e)、図3(f)に示すように、それぞれの部材の端部を除いて補強材を貼着するものとし、かつ、図3(f)に示すように、側面部材を2つ折りして製袋できるように、側面部材の中央に折り罫7を設けることが望ましい。
【0008】
また、前記補強材を、図2(b)または図3(b)に示すように複合フィルムの層間に挟入しても良いし、また、図2(c)または図3(c)に示すように複合フィルムの外面に貼着してもよい。
【0009】
本発明の自立袋は複合フィルムにより形成され、その自立性を向上させるために補強材を貼着させるものである。
前記複合フィルムは、少なくとも片面が熱融着性を有する材質からなる2層以上のラミネートフィルムである。前記複合フィルムとしては、例えば、
(A)表面層/接着層/熱融着層
(B)表面層/接着層/中間層/接着層/熱融着層
のような構成であり、本発明の補強材を挟入すると
(A′)補強材基材/粘着剤層/表面層/接着層/熱融着層
(B′)表面層/接着層/補強材基材/粘着剤層/中間層/接着層/熱融 着層
のような構成となる。
【0010】
前記表面層としては、二軸延伸ポリプロピレンフィルム(OPP) 、二軸延伸ポリエステルフィルム(PET) 、二軸延伸ナイロンフィルム(ON)、ポリカーボネートフィルム(PC)等のプラスチックフィルム、セロファン、あるいは、前記プラスチックフィルムにアルミニウム等の金属、または、酸化珪素、酸化アルミニウム等の酸化物を蒸着したフィルムを用いることができる。
【0011】
前記接着層としては、エチレン・アクリル酸共重合体(EEA) 、エチレン・メタクリル酸共重合体(EMAA)、アイオノマー等を接着性樹脂とするサンドイッチラミネーション法により形成される層、接着剤を用いてラミネートするドライラミネート法またはウェットラミネート法により形成される層である。
【0012】
本発明の自立袋における補強材は、紙、合成紙、不織布等の補強材の基体に肩面に印刷を施し、他の面に粘着剤を塗布して形成される。前記基体15としては、印刷適性をはじめ、剛性、ラミネート適性等の加工性、また、コストの点等から60〜300 g/m2の厚さの紙を用いることが望ましい。紙の厚さが 60 g/m2未満の場合、望ましい剛性が得にくく、また、紙の厚さが300 g/m2を超えると、製袋時等の加工性が悪くなる。
補強材に用いられる前記粘着剤としては、アクリル樹脂、合成ゴム、天然ゴム等を主成分とする粘着剤を用いることができる。
前記粘着剤を塗布面には、剥離紙をラミネートし、本発明の補強材とするために所定の形状にラベル抜きを行う。ラベル抜きによって、前記補強材部分のみが剥離紙の上に残り、他の部分は除去される。
また、前記粘着剤として、加熱により粘着性を発現する感熱性粘着剤を用いてもよい。感熱性粘着剤は、塗布後に粘着性を示さないため、剥離紙を必要としないが、複合フィルムへの貼着の際には、該感熱性粘着剤を加熱して、活性化して粘着性を発現させる。
【0013】
前記中間層は、複合フィルムとしての強度の向上、水蒸気、酸素等のガスに対するバリア性向上の目的のために、表面層と熱融着層との間に積層するが、該中間層は2層以上とすることもできる。中間層としては、具体的には、二軸延伸ポリプロピレンフィルム、二軸延伸ポリエステルフィルム、二軸延伸ナイロンフィルム、ポリカーボネートフィルム、エチレン・酢酸ビニル共重合体のケン化物(EVOH)等のプラスチックフィルム、セロファン、あるいは、前記プラスチックフィルムにアルミニウム等の金属、または、酸化珪素、酸化アルミニウム等の酸化物を蒸着したフィルムを用いることができる。
【0014】
本発明の自立袋を形成する複合フィルムに積層する熱融着層としては、袋として必要な、ヒートシール強度が得られ、また、その上端部に前記合成樹脂製の成形注出口を装着する場合には、前記注出口の接着基部への熱接着が可能なものとする。熱融着層として用いられるものは、キャストポリプロピレン、(CPP) 、線状低密度ポリエチレン(LLDPE) 、低密度ポリエチレン(LDPE)、アイオノマー、エチレン・メタクリル酸共重合体(EMAA)、ポリエステル(PET) 等のフィルムをラミネートするか、またはこれらの樹脂を押出し法により、前記中間層の面等に形成してもよい。
【0015】
本発明の自立袋に用いる補強材は、自立袋の側壁部の剛性を増して自立性を向上させるためのものであり、その材質としては、紙、不織布、合成紙等を用いることができるが、加工性の良さ、コスト等の面から60〜300 g/m2の紙が好適に用いられる。紙の厚さが60g/m2未満の場合には、本発明の課題である自立性の向上効果が殆ど期待できない。また、前記紙の厚さが300 g/m2を超えると、製袋工程において折り曲げ適性が悪く、袋としての成形性が悪くなる。
【0016】
本発明の自立袋には、合成樹脂製の成形注出口を装着することができる。前記注出口としては、例えば、図7(a)に示すような形状の注出口である。第1のフランジ部21に対し、その一方側に袋本体の内側に取り付けられる接着基部22をまた他方側に、袋の外側にある注出口筒部23を設けてなる注出口本体20を合成樹脂で一体に成形する注出口において、前記第1のフランジ部21の下方に設けた前記接着基部22は、袋の2辺間にあって2辺が接着しやすくして密封性が保てるようにした底面視においてシャトル形状であり、該シャトル形状の接着基部には、図7(b)に示すように閉塞防止リブが設けられていてもよい。
【0017】
本発明の自立袋の製造方法について説明する。
第1の方法は、前記複合フィルムにおける中間層の外面側に絵柄を印刷する。別に、補強材の基体に、補強材とする部分に印刷を行い、裏面に粘着剤をコート後、抜き加工により補強材を形成する。得られた補強材を前記中間層の外面に、自立袋とした場合に側壁部となる部位に貼着する。
【0018】
本発明の自立袋において、補強材を加工する際に、該補強材の被印刷体に、絵柄部と非絵柄部とを有する版を用いて印刷する。本発明の説明において、自立袋の側壁部に補強材として貼着する部分を絵柄部として、また、前記補強材を打ち抜いた後のスケルトン部分を非絵柄部として記載することがある。ただし、前記絵柄部は補強材として用いる領域を指すものであって絵柄はあっても無くてもよい。
次いで、中間層の前記補強材を貼着した面に基材フィルムを接着性樹脂を用いたサンドイッチラミネーション法(以下、SL法) またはドライラミネーション法( 以下、DL法) により積層する。つづいて、中間層の補強材を貼着しない面に、熱融着層をECまたはDL法により順次貼り合わせて積層体を得る。得られた積層体を所定の巾にスリットする。
得られた所定の巾の積層体を用いて、製袋機械または自動製袋包装機等により製袋することによって、側壁部に相当する部位にある複合フィルムの層間に補強材が積層された自立袋とすることができる。
【0019】
本発明の自立袋における第2の方法は、自立袋を形成する複合フィルムの外面に補強材を貼着する方法である。
その方法は、例えば、前記中間層の外面側に絵柄を印刷をし、該印刷面に基材フィルムをEC法またはDL法によりラミネートする。次いで、中間層の非印刷面に熱融着層をSL法またはDL法によりラミネートして複合フィルムとする。
別に補強材の基体に、補強材とする部分に印刷を行い、裏面に粘着剤をコート後抜き加工により補強材を形成する。得られた補強材を前記複合フィルムの外面に貼着することによって積層体を得る。得られた積層体を所定の巾にスリットする。
得られた所定の巾の積層体を用いて、製袋機械または自動製袋包装機等により製袋することによって、側壁部に相当する部位にある複合フィルムの層間に補強材が積層された自立袋とすることができる。
前記第2の方法における積層体への補強材への貼着は、スリットの前であっても良い。
【0020】
また、本発明においては、補強材の基体の表面に絵柄を印刷し、その裏面に、感熱粘着剤を塗布乾燥した補強材を、貼着の直前に活性化して粘着性を発現させた後、前記補強材を自立袋を形成する複合フィルムの層間または外面の所定の場所に貼着することもできる。
この場合には、次のような貼着装置を用いることにより、効率よくまた安定して所定の位置に補強材を貼着できる。
前記装置は、図6(a)に示すように、断裁された補強材を供給する場合には、そのスタッキング部と、該スタッキング部から搬送コンベア上に所定の列数の補強材を一定間隔に供給する機構とする。また、搬送コンベアの搬送面の先端には補強材のストッパーを備え、一方、ロール状の基材フィルムまたは積層体となった複合フィルム(以下、基材ロール)が補強材貼着面を前記ストッパー側にして流れている。また、補強材1に塗布された感熱粘着剤16を活性化させる加熱源を有する活性化部63を設ける。なお、感熱粘着剤16の活性化は、熱風、赤外線などにより塗布面を加熱することによりなされる。
【0021】
前記装置KMは、図6(a)は、断裁された補強材1を供給する場合の装置の概念図であり、その補強材ストッカー部61と、該ストッカー部61から搬送コンベア62上に所定の列数の補強材1を一定間隔に供給する機構とする。また、搬送コンベア62の搬送面の先端には補強材のストッパー64を設ける。該ソトッパーは、制御される変位部に連動しており、該変位部は、基材ロールの流れにおいて、補強材を基材ロールの所定の面にタイミングよく貼着させるように制御により、前記ストッパー64が前記補強材1を停止状態にしたり、開放状態にして補強材を基材ロール66に移動可能にしたりするものである。
一方、巻き返し機60としてロール状の基材フィルムまたは基材フィルムと中間層との積層体である基材ロール66が補強材貼着面を前記ストッパー側にして流れている。
【0022】
補強材1の貼着は、先ず、前記該ストッカー部61から搬送コンベア62上に所定の列数の補強材1を、図6(b)に示すように、その感熱粘着剤16の塗布面を上にして一定間隔に供給する。コンベア62の移送部の上部にある活性化部により、前記感熱粘着剤層16を加熱し粘着性を発現する。粘着性を発現した補強材1は、コンベアの先端にあるストッパーにより、移動を停止され、後述の貼着のタイミングにより基材ロールに貼着される。
前記巻き返し機60における前記基材ロールの流れは連続的であっても、また間欠的であってもよい。そして装置の制御部は、前記基材ロールの印刷部の位置を検知部68において検知して、補強材1を貼着するタイミングを前記ストッパー64の変位部に信号を送る。そして、貼着のタイミングの信号を受信した変位部は、停止しているストッパー64を直ちに開放状態に切替え、補強材1は、基材ロール66の所定の位置に貼着される。貼着方法は、ジェットエアー、機械的プッシャー等の方法のいずれでもよい。また。補強材1の貼着後、基材ロール66と補強材1とをピンチロール65などにより加圧して貼着を確実にする。
前記補強材の貼着する面が、複合フィルムの基材層の面または、中間層の面である場合には、前記補強材を貼着した面に中間層をラミネートする仕様では、中間層をラミネートし、そして、熱融着層をラミネートして積層体とした後、前述したように、自立袋の製袋機または自動包装機により成形製袋することによって、自立性のよい袋となる。
また、前記補強材の貼着する面が、複合フィルムの外面である場合には、前記貼着面を確実に固着後、どうように、製袋機または包装機にかけることにより
自立性のよい袋が得られる。
【0023】
本発明の自立袋の上端には、図1(b)に示すように合成樹脂を用いて射出成形した注出口を設けることができる。前記注出口の形状は、例えば、図7(a)に示すように、第1のフランジ部21に対し、その一方側に袋本体の内側に取り付けられる接着基部22を、また、他方側には袋の外側にある注出口筒部23を設けてなる注出口本体を合成樹脂を用いて一体に成形し、該注出口本体20にキャップSを螺合してなるものであって、注出口本体20の前記第1のフランジ部21の下方に設けた接着基部22は、袋の2辺間にあって2辺が接着し易くして密封性が保てるように底面視においてシャトル形状であり、また、前記注出口筒部23には、必要に応じて第2、第3のフランジ部23、24あるいはキャップSとの螺合のためのねじ26等を設けてもよい。
前記注出口の袋への装着は図7(a)に示すように、袋の上端部のヒートシールの際に、シール部5の一部を未シール部5Nとしておき、前記注出口本体20の接着基部22を該未シール部5Nに挿入した後、未シール部5Nのフィルムの外面から加熱加圧することによって、袋に注出口本体20を密封シール状態に装着することができる。
また、図7(b)に示すように、前記接着基部22の下部に延長片27を設け、該延長片27に連結して閉塞防止リブ28を設けることができる。前記延長片4ケの先端同士を互いに懸架し、それぞれ懸架した部分を延長した断面十字型の延長リブを設けることによって内容物の取り出し時における袋の閉塞を防止できる。
【0024】
【実施例】
次に、本発明を実施例により、さらに具体的に説明する。
〔実施例1〕
片面コート紙(三菱製紙株式会社製 片アート坪量:157 g/m2)のコート面に多色グラビア印刷方式により絵柄を印刷した絵柄部を形成した。該絵柄部を形成した面の裏面に粘着コート(日東電工株式会社製 500番)を行い、剥離紙70g/m2と貼り合わせた。
次に、前記片面コート紙に形成した絵柄部の外周に沿って、ロータリーダイカッターにてラベル抜き加工を行い補強材とする部材を形成した。
次に、中間層となるアルミ蒸着フィルム(東洋メタライジング株式会社製 1100:12μm厚)の蒸着面に絵柄を印刷し、該蒸着面側に上記方式により作成した補強材を部分的に貼り込みを行った。
次いで、20μm厚の延伸ポリプロピレン(OPP) フィルム(二村化学工業株式会社製 FONA)にアンカーコート剤としてイソシアネートを塗布した面と、前記アルミ蒸着フィルムの補強材張り込み面とを20μmの厚さのポリエチレン樹脂を接着性樹脂としてSL法によりラミネートした。続いて、前記アルミ蒸着フィルムの非蒸着面にイソシアネート系のアンカーコート剤を塗布し、この塗布面に30μmの厚さの線状低密度ポリエチレン樹脂(三井石油化学工業株式会社製 15100C)を押出して熱融着層を形成して積層体を得た。
【0025】
得られた積層体の構成について、補強剤積層部分と補強材のない部分とを略号によって示すと次の通りである。
補強層部分
OPP20/AC/ 絵柄印刷/ コート紙157/粘着剤/ 絵柄印刷/VMPET12/AC/LLDPE30
非補強層
OPP20/AC/PE20/VMPET12/AC/LLDPE30
〔略号 OPP:2軸延伸ポリプロピレンフィルム、VMPET:アルミニウム蒸着ポリプロピレンフィルム、AC: アンカーコート、LLDPE:線状低密度ポリエチレン樹脂、また略号の後の数字はいずれも厚さ( μm) を示す。但し、紙はg/m2である。〕
そして得られた積層体を所定の巾にスリットした巻き取りを縦形ガセツトピロー包装機(株式会社 川島製作所製)にセットし、自立袋の成形、内容物の充填および密封シールを行ったところ、自立袋製の高いガセット袋が得られた。
【0026】
また、上記多層フィルムの巻き取りを製袋機(株式会社 西部製作所製)にセットし、包装体の成形及び包装体のシールを行ったところ、自立性の高いガセット袋が得られた。
【0027】
〔実施例2〕
補強材の基体となる片面コート紙(三菱製紙株式会社製 片アート 坪量:157 g/m2)のコート面に多色グラビア印刷方式により絵柄部を形成するとともに、非印刷面に粘着コート(日東電工株式会社製 500番)を行い、剥離紙紙70g/m2と貼り合わせた。
次に、補強材となる前記コート紙の前記絵柄部の外周に沿って、ロータリーダイカッターにて半抜き加工により補強材部を形成した。
次に、アルミ蒸着フィルム(東洋メタライジング株式会社製 1100:12μm厚)の蒸着面に絵柄を印刷を施した。
次いで、20μm厚の延伸ポリプロピレン(OPP) フィルム(二村化学株式会社製 FONA)にイソシアネート系アンカーコート剤を塗布した。そして、ポリエチレン樹脂を接着層として20μm押出し、蒸着フィルムの印刷面と貼り合わせを行った。続いて、蒸着フィルムの非蒸着面にイソシアネート系アンカーコート剤を塗布し、この塗布面に30μm厚の線状低密度ポリエチレン樹脂(三井石油化学工業株式会社製 15100C)を押出して熱融着層を形成して、自立袋を形成する複合フィルムを得た。
該複合フィルムの外面の延伸ポリプロピレン側に前記補強材を貼着して自立袋を形成する積層体を得た。
【0028】
以上説明した積層体の構成を材質の略号により示すと次の通りである。
補強層
絵柄印刷/ コート紙157/粘着剤/OPP/AC/PE20/ 絵柄印刷/VMPET12/AC/LLDPE30
非補強層
OPP20/AC/PE20/VMPET12/AC/LLDPE30
【0029】
以上の工程によって形成された多層フィルムの巻き取りを縦型ガセットピロー機(株式会社 川島製作所製)にセットし、包装体の成形、包装体の内容物の充填および包装体のシールを行ったところ、自立性の高いガセット袋が得られた。また、上記多層フィルムの巻き取りを製袋機(株式会社 西部製作所製)にセットし、包装体の成形及び包装体のシールを行ったところ、自立性の高いガセット袋が得られた。
【0030】
【発明の効果】
本発明の自立袋は、従来の自立袋と比較して、その自立性を向上させることが可能となった。自立袋に貼着させる補強材には粘着層が設けられており、複合フィルムのラミネート工程において層間に挿入したり、また、複合フィルムを形成後、その表面に貼着することにより積層体にすることができるので製造が容易である。
また、自立袋の側壁部が本発明の補強材の貼着によって剛性が向上したために、使用者が自立袋の胴部を手で掴んでも、内容物が飛び出すことがなくなって、安心して使用できるようになった。
前記補強材に印刷が可能なので、シリーズ展開をする商品における多数のバリエーションを表示する際には、前記補強材の基材にバリエーションの絵柄、文字等を印刷することができる。
【図面の簡単な説明】
【図1】本発明の自立袋の実施例を示す、(a)斜視図、(b)注出口を装着した斜視図、(b)本発明の自立袋の別の実施例を示す斜視図である。
【図2】本発明の自立袋の構造を説明する、(a)図1におけるX1 −X1 部断面図、(b)Y1 部拡大図で補強材を複合フィルムの層間に設けた例、(c)Y1 部拡大図で補強材を複合フィルムの外面に貼着した例、(d)積層体の展開図である。
【図3】本発明の自立袋の別の構造を説明する、(a)図1におけるのX2 −X2 部断面図、(b)Y2 部拡大図で補強材を複合フィルムの層間に設けた例、(c)Y2 部拡大図で補強材を複合フィルムの外面に貼着した例、(d)前面部材または後面部材の正面図、(e)側面部材の正面図である。(f)製袋時の各部材の位置を示す上面図である。
【図4】本発明の自立袋を形成する積層体の実施例を示す、(a)補強部、(b)非補強部のそれぞれの断面図である。
【図5】本発明の自立袋を形成する別の積層体の実施例を示す、(a)補強部、(b)非補強部のそれぞれの断面図である。
【図6】本発明の自立袋の補強材の貼着工程に用いる装置の実施例を示す、(a)装置の概念図、(b)Y3 部拡大図である。
【図7】本発明の自立袋に装着する注出口についての説明図で、(a)実施例を示す、注出口本体、蓋体、及び装着する袋の一部を示す斜視図、(b)注出口の別の実施例を示す斜視図である。
【図8】各種自立袋を説明する、(a)スタンディングパウチ、(b)サイドガセットタイプ自立袋、(C)上下ガセットタイプ自立袋のそれぞれの斜視図である。
【符号の説明】
P 本発明の自立袋
S 注出口
1 補強材
2 前面部材または前面パネル
3 後面部材または後面パネル
4 側面部材または側面パネル
5 ヒートシール部
5N 未シール部
6 折り罫
10 自立袋を形成する積層体
10a 自立袋を形成する積層体の補強材挿入部または貼着部
10b 自立袋を形成する積層体の非補強部
11 表面層
12 熱融着層
13 中間層
14 接着層
15 補強材基体
16 粘着層又は感熱粘着剤
17 インキ
20 注出口本体
21 第1のフランジ部
22 接着基部
23 筒部
24 第2のフランジ部
25 第3のフランジ部
26 ねじ
27 延長片
28 閉塞防止リブ
30 スタンディングパウチ
31 ヒートシール部
40 サイドガセットタイプの自立袋
41 ヒートシール部
42 注出口
50 上下ガセットタイプの自立袋
51 ヒートシール部
52 注出口
KM 補強材の貼着装置
60 巻き返し機
61 補強材ストッカー
62 コンベア
63 活性化部
64 ストッパー
65 ピンチロール
66 基材ロール等
67 巻取
68 検知部
[0001]
BACKGROUND OF THE INVENTION
The present invention Supplement The present invention relates to a strong material sticking apparatus.
[0002]
[Prior art]
Various bag-making styles have been proposed in order to provide a self-supporting state in a state where a bag made of a flexible laminate is filled with contents. For example, the standing pouch 30 shown in FIG. 8A, the side gusset type self-supporting bag 40 shown in FIG. 8B, and the self-supporting bag 60 with upper and lower gussets shown in FIG. Has been. As a self-supporting bag formed of a flexible composite film, among the above-mentioned various self-supporting bags, the side gusset type self-supporting bag 30 is inferior in self-supporting property when it is made self-supporting, and its body part swells. was there.
[0003]
[Problems to be solved by the invention]
For example, in the side gusset type self-supporting bag, it is effective to increase the rigidity of the composite film when emphasizing self-supporting. However, in order to increase the rigidity of the composite film, the thickness of a part of the composite laminate or all the constituent layers is increased, resulting in an increase in cost and the conditions for thermal bonding. As a result, the sealing time takes a long time and the production efficiency decreases.
Further, in the conventional free-standing bag, when the contents are taken out, if the body of the bag is grasped by hand, the laminated body is flexible and is difficult to hold, and the contents are liquid or viscous material. In some cases, the contents may pop out the moment you hold the bag.
An object of the present invention is to provide a self-supporting bag made of a flexible composite film that is easy to hold by hand and has good usability, a method for manufacturing the same, and the like.
[0004]
[Means for Solving the Problems]
The present invention Supplement A pattern is provided on the surface of a strong substrate, a heat-sensitive adhesive is applied to the other side, a roll-shaped reinforcing material is supplied and dried, and a punched portion that is a reinforcing material of a predetermined shape is punched from the rolled-shaped reinforcing material. A supply unit that discharges the heat-sensitive adhesive application surface upward onto the conveyor, a transfer conveyor, a heat-sensitive adhesive activation unit provided at any of the above positions, and a self-standing bag at the end of the conveyor A roll-up machine that continuously or intermittently moves the roll-shaped film on which the composite film is laminated, detects a flow position of the roll-shaped film in the roll-up machine, and takes a timing to reinforce the composite film at a predetermined position It is the sticking apparatus of the reinforcing material comprised from the sticking part of the function which sticks.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The self-supporting bag of the present invention is made by using a composite film having at least two layers and improves self-supporting property by sticking a reinforcing material to a portion corresponding to the self-supporting self-supporting bag side wall portion. Is. The reinforcing material is attached to the outer surface of the composite film or sandwiched between layers of the composite film. The reinforcing material is one in which an adhesive is applied on either side.
FIG. 1 shows an embodiment of the self-supporting bag of the present invention, (a) a perspective view, (b) a perspective view equipped with a spout, and (b) a perspective view showing another embodiment of the self-supporting bag of the present invention. is there. FIG. 2 illustrates the structure of the self-supporting bag of the present invention. (A) X in FIG. 1 -X 1 Partial sectional view, (b) Example in which the reinforcing material is provided between the layers of the composite film in the Y part enlarged view, (c) Example in which the reinforcing material is attached to the outer surface of the composite film in the Y part enlarged view, (d) Laminate FIG. FIG. 3 illustrates another structure of the self-supporting bag of the present invention. (A) X in FIG. 1 (c) 2 -X 2 Partial sectional view, (b) Example in which the reinforcing material is provided between the layers of the composite film in the Y part enlarged view, (c) Example in which the reinforcing material is attached to the outer surface of the composite film in the Y part enlarged view, (d) Front member Or it is a front view of a rear surface member, (e) It is a front view of a side member. (F) It is a top view which shows the position of each member at the time of bag making. FIG. 4 is a cross-sectional view of each of (a) a reinforcing part and (b) a non-reinforcing part showing an example of a laminated body forming the self-supporting bag of the present invention. FIG. 5: is sectional drawing of each of (a) reinforcement part and (b) non-reinforcement part which show the Example of another laminated body which forms the self-supporting bag of this invention. FIG. 6 shows an embodiment of the apparatus used in the step of attaching the reinforcing material of the self-supporting bag of the present invention, (a) conceptual diagram of the apparatus, (b) Y Three FIG.
FIG. 7 is an explanatory view of the spout attached to the self-supporting bag of the present invention, (a) a perspective view showing a spout main body, a lid, and a part of the attached bag, showing an embodiment; It is a perspective view which shows another Example of a spout.
[0006]
As shown in FIG. 1 (a), the self-supporting bag of the present invention has a reinforcing member 10a attached to the side wall, and the attachment may be on the outer surface of the bag or form a bag. It may be between the layers of the composite film.
For example, a conventional side gusset type self-supporting bag is composed of a front member, a rear member, and a side member made of a flexible composite film. There were many bad cases.
In view of this, the present inventor puts a reinforcing material made of a material having rigidity such as paper between layers located on the side wall when the composite film is used as a self-supporting bag, or a reinforcing material on the outer surface of the composite film. As a result, it was possible to improve the independence of the self-supporting bag, and various studies and experiments were conducted to complete the present invention.
[0007]
As shown in FIG. 1 (a) or FIG. 1 (b), the reinforcing material in the self-supporting bag of the present invention may be attached to the entire periphery of the self-supporting bag, or shown in FIG. 1 (c). As such, it may be provided in each of the self-standing bags except for the front, rear and side edges,
For example, when a reinforcing material is attached to the entire periphery of the self-supporting bag, the folding line 7 is provided as shown in FIG. 2B to facilitate the formation of the bag.
In addition, in order to provide the reinforcing material on each of the self-standing bags except for the front, rear and side edges, as shown in FIGS. 3 (d), 3 (e) and 3 (f), As shown in FIG. 3 (f), a crease 7 is provided at the center of the side member so that the side member can be folded in two to form a bag, as shown in FIG. 3 (f). It is desirable to provide it.
[0008]
Further, the reinforcing material may be sandwiched between the layers of the composite film as shown in FIG. 2 (b) or FIG. 3 (b), or as shown in FIG. 2 (c) or FIG. 3 (c). As such, it may be attached to the outer surface of the composite film.
[0009]
The self-supporting bag of the present invention is formed of a composite film, and a reinforcing material is attached to improve the self-supporting property.
The composite film is a laminate film having two or more layers made of a material having at least one surface having heat-fusibility. As the composite film, for example,
(A) Surface layer / Adhesive layer / Heat-bonding layer
(B) Surface layer / adhesive layer / intermediate layer / adhesive layer / heat fusion layer
When the reinforcing material of the present invention is inserted,
(A ') Reinforcing material substrate / Pressure-sensitive adhesive layer / Surface layer / Adhesive layer / Heat-bonding layer
(B ′) Surface layer / Adhesive layer / Reinforcement substrate / Adhesive layer / Intermediate layer / Adhesive layer / Heat-bonding layer
The configuration is as follows.
[0010]
Examples of the surface layer include biaxially stretched polypropylene film (OPP), biaxially stretched polyester film (PET), biaxially stretched nylon film (ON), polycarbonate film (PC), and other plastic films, cellophane, or the plastic film. A film in which a metal such as aluminum or an oxide such as silicon oxide or aluminum oxide is vapor-deposited can be used.
[0011]
As the adhesive layer, an ethylene / acrylic acid copolymer (EEA), an ethylene / methacrylic acid copolymer (EMAA), a layer formed by a sandwich lamination method using an ionomer or the like, and an adhesive are used. It is a layer formed by a dry laminating method or a laminating method for laminating.
[0012]
The reinforcing material in the self-supporting bag of the present invention is formed by printing on the shoulder surface of a reinforcing material substrate such as paper, synthetic paper, or non-woven fabric, and applying an adhesive on the other surface. The substrate 15 is 60 to 300 g / m in view of printability, workability such as rigidity and laminate suitability, and cost. 2 It is desirable to use paper with a thickness of. Paper thickness is 60 g / m 2 Is less than the desired rigidity, and the paper thickness is 300 g / m. 2 If it exceeds 1, processability at the time of bag-making becomes worse.
As the pressure-sensitive adhesive used for the reinforcing material, a pressure-sensitive adhesive mainly composed of acrylic resin, synthetic rubber, natural rubber or the like can be used.
A release paper is laminated on the application surface of the pressure-sensitive adhesive, and a label is removed in a predetermined shape in order to use the reinforcing material of the present invention. By removing the label, only the reinforcing material portion remains on the release paper, and the other portions are removed.
Moreover, you may use the heat sensitive adhesive which expresses adhesiveness by heating as the said adhesive. Since the heat-sensitive adhesive does not exhibit adhesiveness after application, a release paper is not required. However, when sticking to a composite film, the heat-sensitive adhesive is heated to activate and become adhesive. To express.
[0013]
The intermediate layer is laminated between the surface layer and the heat fusion layer for the purpose of improving the strength as a composite film and improving the barrier property against gas such as water vapor and oxygen. It can also be set as above. Specific examples of the intermediate layer include biaxially stretched polypropylene film, biaxially stretched polyester film, biaxially stretched nylon film, polycarbonate film, plastic film such as saponified ethylene / vinyl acetate copolymer (EVOH), cellophane, etc. Alternatively, a film obtained by evaporating a metal such as aluminum or an oxide such as silicon oxide or aluminum oxide on the plastic film can be used.
[0014]
As the heat-sealing layer laminated on the composite film forming the self-supporting bag of the present invention, the heat seal strength necessary for the bag is obtained, and the synthetic resin-made molding spout is attached to the upper end portion thereof. It is assumed that heat bonding to the bonding base of the spout is possible. Cast polypropylene, (CPP), linear low density polyethylene (LLDPE), low density polyethylene (LDPE), ionomer, ethylene / methacrylic acid copolymer (EMAA), polyester (PET) A film such as the above may be laminated, or these resins may be formed on the surface of the intermediate layer by an extrusion method.
[0015]
The reinforcing material used for the self-supporting bag of the present invention is for increasing the rigidity of the side wall portion of the self-supporting bag to improve the self-supporting property, and as the material thereof, paper, non-woven fabric, synthetic paper or the like can be used. 60-300 g / m from the viewpoint of good workability and cost 2 Are preferably used. Paper thickness is 60g / m 2 If the ratio is less than 1, the improvement effect of the self-supporting property, which is the subject of the present invention, can hardly be expected. The thickness of the paper is 300 g / m 2 If it exceeds 1, folding suitability is poor in the bag making process, and the formability as a bag becomes poor.
[0016]
The self-standing bag of the present invention can be equipped with a synthetic resin molding spout. An example of the spout is a spout having a shape as shown in FIG. The first flange portion 21 has a spout main body 20 provided with an adhesive base 22 attached to the inside of the bag body on one side and a spout cylinder portion 23 on the outside of the bag on the other side. In the spout integrally molded in the bottom view, the adhesive base portion 22 provided below the first flange portion 21 is located between the two sides of the bag so that the two sides can be easily adhered to each other so that the sealing performance can be maintained. The shuttle-shaped adhesive base may be provided with a blocking prevention rib as shown in FIG. 7B.
[0017]
The manufacturing method of the self-supporting bag of this invention is demonstrated.
In the first method, a pattern is printed on the outer surface side of the intermediate layer in the composite film. Separately, the reinforcing material base is printed on the portion to be the reinforcing material, and the back surface is coated with an adhesive, and then the reinforcing material is formed by punching. When the obtained reinforcing material is used as a self-supporting bag on the outer surface of the intermediate layer, the reinforcing material is attached to a portion that becomes a side wall portion.
[0018]
In the self-supporting bag of the present invention, when the reinforcing material is processed, printing is performed on the printed material of the reinforcing material using a plate having a pattern portion and a non-pattern portion. In the description of the present invention, a portion that is attached as a reinforcing material to the side wall portion of the self-supporting bag may be described as a pattern portion, and a skeleton portion after punching out the reinforcing material may be described as a non-pattern portion. However, the said pattern part points out the area | region used as a reinforcing material, and may or may not have a pattern.
Next, a base film is laminated on the surface of the intermediate layer on which the reinforcing material is adhered by a sandwich lamination method (hereinafter referred to as SL method) or a dry lamination method (hereinafter referred to as DL method) using an adhesive resin. Subsequently, a heat-sealing layer is sequentially bonded to the surface of the intermediate layer on which the reinforcing material is not bonded by EC or DL method to obtain a laminate. The obtained laminate is slit to a predetermined width.
A self-supporting material in which a reinforcing material is laminated between layers of a composite film in a portion corresponding to a side wall portion by bag-making with a bag making machine or an automatic bag making and packaging machine using the obtained laminate having a predetermined width. It can be a bag.
[0019]
The 2nd method in the self-supporting bag of this invention is a method of sticking a reinforcing material on the outer surface of the composite film which forms a self-supporting bag.
For example, a pattern is printed on the outer surface side of the intermediate layer, and a substrate film is laminated on the printed surface by an EC method or a DL method. Next, a heat fusion layer is laminated on the non-printing surface of the intermediate layer by the SL method or DL method to form a composite film.
Separately, printing is performed on the portion of the reinforcing material base to be the reinforcing material, and the reinforcing material is formed by applying a pressure-sensitive adhesive on the back surface and performing post-cutting processing. A laminated body is obtained by sticking the obtained reinforcing material to the outer surface of the composite film. The obtained laminate is slit to a predetermined width.
A self-supporting material in which a reinforcing material is laminated between layers of a composite film in a portion corresponding to a side wall portion by bag-making with a bag making machine or an automatic bag making and packaging machine using the obtained laminate having a predetermined width. It can be a bag.
The sticking of the reinforcing material to the laminate in the second method may be before the slit.
[0020]
Further, in the present invention, after a pattern is printed on the surface of the base material of the reinforcing material, and the back surface of the reinforcing material applied and dried with a heat-sensitive adhesive, the adhesive is activated immediately before sticking to express the adhesiveness. The reinforcing material may be attached to a predetermined place on the interlayer or outer surface of the composite film forming the self-supporting bag.
In this case, the reinforcing material can be attached to a predetermined position efficiently and stably by using the following attaching device.
As shown in FIG. 6 (a), when the cut reinforcing material is supplied to the apparatus, the stacking portion and a predetermined number of rows of reinforcing material from the stacking portion to the transport conveyor are arranged at regular intervals. A mechanism to supply is used. In addition, a stopper of a reinforcing material is provided at the front end of the conveying surface of the conveying conveyor, while a roll-shaped base film or a composite film (hereinafter referred to as a base material roll) formed as a laminate has a reinforcing material sticking surface on the stopper. It is flowing to the side. Moreover, the activation part 63 which has a heating source which activates the heat-sensitive adhesive 16 apply | coated to the reinforcing material 1 is provided. The heat sensitive adhesive 16 is activated by heating the coated surface with hot air, infrared rays, or the like.
[0021]
FIG. 6A is a conceptual diagram of the apparatus in the case where the cut reinforcing material 1 is supplied. The reinforcing material stocker unit 61 and a predetermined number of units from the stocker unit 61 onto the transport conveyor 62 are shown in FIG. A mechanism for supplying a number of rows of reinforcing materials 1 at regular intervals is adopted. Further, a stopper 64 of a reinforcing material is provided at the front end of the transport surface of the transport conveyor 62. The sotopper is linked to a controlled displacement portion, and the displacement portion controls the stopper so that the reinforcing material is adhered to a predetermined surface of the substrate roll in a timely manner in the flow of the substrate roll. Reference numeral 64 designates the reinforcing material 1 in a stopped state or an open state so that the reinforcing material can be moved to the base material roll 66.
On the other hand, a base roll 66 which is a roll-shaped base film or a laminate of a base film and an intermediate layer flows as the rewinder 60 with the reinforcing material sticking surface on the stopper side.
[0022]
First, the reinforcing material 1 is attached to the conveying conveyor 62 from the stocker unit 61 with a predetermined number of rows of the reinforcing material 1 as shown in FIG. 6 (b). Supply up at regular intervals. The heat-sensitive adhesive layer 16 is heated by the activating unit at the upper part of the transfer unit of the conveyor 62 to develop adhesiveness. The reinforcing material 1 that exhibits adhesiveness is stopped by the stopper at the tip of the conveyor, and is stuck to the base roll at the timing of sticking described later.
The flow of the substrate roll in the rewinding machine 60 may be continuous or intermittent. And the control part of an apparatus detects the position of the printing part of the said base material roll in the detection part 68, and sends the signal to the displacement part of the said stopper 64 the timing which sticks the reinforcement material 1. FIG. And the displacement part which received the signal of the timing of sticking immediately switches the stopper 64 which has stopped to an open state, and the reinforcing material 1 is stuck to the predetermined position of the base-material roll 66. FIG. Any sticking method such as jet air or mechanical pusher may be used. Also. After the reinforcement material 1 is attached, the base material roll 66 and the reinforcement material 1 are pressed by a pinch roll 65 or the like to ensure the attachment.
In the case where the surface to which the reinforcing material is attached is the surface of the base layer of the composite film or the surface of the intermediate layer, in the specification of laminating the intermediate layer on the surface to which the reinforcing material is attached, the intermediate layer is After laminating and laminating the heat-sealing layer to form a laminated body, as described above, by forming and making bags with a self-standing bag making machine or an automatic packaging machine, a bag with good self-supporting properties is obtained.
In addition, when the surface to which the reinforcing material is attached is the outer surface of the composite film, after securely attaching the attachment surface, how to apply it to a bag making machine or a packaging machine
A bag with good independence can be obtained.
[0023]
At the upper end of the self-supporting bag of the present invention, a spout that is injection-molded using a synthetic resin can be provided as shown in FIG. The shape of the spout is, for example, as shown in FIG. 7 (a), with respect to the first flange portion 21, an adhesive base 22 that is attached to the inside of the bag body on one side, and the other side. A spout main body provided with a spout cylinder portion 23 on the outside of the bag is integrally formed using a synthetic resin, and a cap S is screwed into the spout main body 20. The adhesive base portion 22 provided below the first flange portion 21 of the 20 has a shuttle shape in the bottom view so that the two sides of the bag can be easily bonded to each other and the sealing performance can be maintained. You may provide the screw | thread 26 etc. for the screwing with the 2nd and 3rd flange parts 23 and 24 or the cap S in the spout pipe | tube part 23 as needed.
As shown in FIG. 7 (a), when attaching the spout to the bag, when sealing the upper end of the bag, a part of the seal portion 5 is left as an unsealed portion 5N, and the spout main body 20 After inserting the adhesive base 22 into the unsealed portion 5N, the spout main body 20 can be attached to the bag in a hermetically sealed state by heating and pressing from the outer surface of the film of the unsealed portion 5N.
Further, as shown in FIG. 7B, an extension piece 27 can be provided at the lower portion of the adhesive base portion 22 and connected to the extension piece 27 to provide a blocking prevention rib 28. The ends of the four extension pieces are suspended from each other, and a cross-shaped extension rib extending from each suspended portion is provided to prevent the bag from being closed when the contents are taken out.
[0024]
【Example】
Next, the present invention will be described more specifically with reference to examples.
[Example 1]
Single-sided coated paper (Mitsubishi Paper Industries, Ltd., single-sided art basis weight: 157 g / m 2 The pattern part which printed the pattern by the multicolor gravure printing system was formed in the coat surface of). Adhesive coat (No. 500 made by Nitto Denko Corporation) is applied to the back of the surface on which the pattern is formed, and release paper is 70 g / m 2 And pasted together.
Next, along the outer periphery of the pattern portion formed on the single-side coated paper, a labeling process was performed with a rotary die cutter to form a reinforcing material.
Next, a pattern is printed on the vapor deposition surface of an aluminum vapor deposition film (Toyo Metallizing Co., Ltd. 1100: 12 μm thick) as an intermediate layer, and the reinforcing material created by the above method is partially pasted on the vapor deposition surface side. went.
Next, 20 μm thick polyethylene (OPP) film (FONA manufactured by Nimura Chemical Industry Co., Ltd.) is coated with isocyanate as an anchor coating agent, and the surface of the aluminum deposited film on which the reinforcing material is applied is 20 μm thick polyethylene resin. Was laminated by the SL method as an adhesive resin. Subsequently, an isocyanate-based anchor coating agent was applied to the non-deposited surface of the aluminum vapor-deposited film, and a 30 μm-thick linear low-density polyethylene resin (Mitsui Petrochemical Co., Ltd. 15100C) was extruded onto the coated surface. A heat fusion layer was formed to obtain a laminate.
[0025]
About the structure of the obtained laminated body, it is as follows when a reinforcing agent lamination | stacking part and a part without a reinforcing material are shown with an abbreviation.
Reinforcing layer part
OPP20 / AC / Picture printing / Coated paper 157 / Adhesive / Picture printing / VMPET12 / AC / LLDPE30
Non-reinforced layer
OPP20 / AC / PE20 / VMPET12 / AC / LLDPE30
[Abbreviations OPP: biaxially oriented polypropylene film, VMPET: aluminum vapor-deposited polypropylene film, AC: anchor coat, LLDPE: linear low density polyethylene resin, and the numbers after the abbreviations indicate thickness (μm). However, paper is g / m 2 It is. ]
Then, when the obtained laminate was slit into a predetermined width, the winding was set in a vertical gusset pillow packaging machine (manufactured by Kawashima Seisakusho Co., Ltd.), and the self-supporting bag was formed, filled with contents and hermetically sealed. A high-quality gusset bag was obtained.
[0026]
Moreover, when the winding of the multilayer film was set in a bag making machine (manufactured by Seibu Seisakusho Co., Ltd.) and the packaging body was molded and the packaging body was sealed, a highly self-supporting gusset bag was obtained.
[0027]
[Example 2]
Single-sided coated paper (Mitsubishi Paper Industries, Ltd., piece art basis weight: 157 g / m) 2 ) The pattern part is formed on the coated surface by the multicolor gravure printing method, and the non-printed surface is coated with adhesive (No. 500, manufactured by Nitto Denko Corporation) to release paper 70g / m 2 And pasted together.
Next, along the outer periphery of the pattern portion of the coated paper serving as a reinforcing material, a reinforcing material portion was formed by half-cutting with a rotary die cutter.
Next, the pattern was printed on the vapor deposition surface of the aluminum vapor deposition film (Toyo Metallizing Co., Ltd. 1100: 12 μm thickness).
Next, an isocyanate anchor coating agent was applied to a 20 μm-thick oriented polypropylene (OPP) film (FONA manufactured by Nimura Chemical Co., Ltd.). Then, 20 μm was extruded using polyethylene resin as an adhesive layer, and bonded to the printed surface of the deposited film. Subsequently, an isocyanate-based anchor coating agent was applied to the non-deposition surface of the deposited film, and a 30 μm-thick linear low-density polyethylene resin (Mitsui Petrochemical Co., Ltd. 15100C) was extruded onto the coated surface to form a heat-sealing layer. The composite film which formed and formed a self-supporting bag was obtained.
The reinforcing material was stuck to the stretched polypropylene side of the outer surface of the composite film to obtain a laminate that forms a self-supporting bag.
[0028]
The configuration of the laminated body described above is represented by material abbreviations as follows.
Reinforcement layer
Pattern printing / coated paper 157 / adhesive / OPP / AC / PE20 / pattern printing / VMPET12 / AC / LLDPE30
Non-reinforced layer
OPP20 / AC / PE20 / VMPET12 / AC / LLDPE30
[0029]
When winding the multilayer film formed by the above process is set in a vertical gusset pillow machine (manufactured by Kawashima Seisakusho Co., Ltd.), forming the package, filling the contents of the package, and sealing the package A highly self-supporting gusset bag was obtained. Moreover, when the winding of the multilayer film was set in a bag making machine (manufactured by Seibu Seisakusho Co., Ltd.) and the packaging body was molded and the packaging body was sealed, a highly self-supporting gusset bag was obtained.
[0030]
【The invention's effect】
The self-supporting bag of the present invention can improve its self-supporting property as compared with the conventional self-supporting bag. The reinforcing material to be attached to the self-supporting bag is provided with an adhesive layer, and is inserted between the layers in the laminating process of the composite film, or after forming the composite film, it is laminated on the surface to form a laminate. Can be manufactured easily.
Moreover, since the rigidity of the side wall portion of the self-supporting bag has been improved by attaching the reinforcing material of the present invention, even if the user grasps the torso portion of the self-supporting bag by hand, the contents do not pop out and can be used with peace of mind. It became so.
Since printing on the reinforcing material is possible, when displaying a large number of variations in products that are developed in series, it is possible to print variations, characters, and the like on the base material of the reinforcing material.
[Brief description of the drawings]
FIG. 1A is a perspective view showing an embodiment of a self-supporting bag of the present invention, FIG. 1B is a perspective view with a spout installed, and FIG. 1B is a perspective view showing another embodiment of the self-supporting bag of the present invention. is there.
2 explains the structure of the self-supporting bag of the present invention. (A) X in FIG. 1 -X 1 Partial sectional view, (b) Y 1 Example of providing a reinforcing material between layers of a composite film in the enlarged view of the part, (c) Y 1 The example which stuck the reinforcing material on the outer surface of the composite film with the elements on larger scale, (d) It is an expanded view of a laminated body.
3 illustrates another structure of the self-supporting bag of the present invention, (a) X in FIG. 2 -X 2 Partial sectional view, (b) Y 2 Example of providing a reinforcing material between the layers of the composite film in the enlarged view of the part, (c) Y 2 It is the example which stuck the reinforcing material on the outer surface of the composite film by the elements on larger scale, (d) Front view of front member or rear member, (e) Front view of side member. (F) It is a top view which shows the position of each member at the time of bag making.
FIG. 4 is a cross-sectional view of each of (a) a reinforcing portion and (b) a non-reinforcing portion showing an embodiment of a laminated body forming the self-supporting bag of the present invention.
FIGS. 5A and 5B are cross-sectional views of (a) a reinforcing portion and (b) a non-reinforcing portion, showing another example of a laminated body forming the self-supporting bag of the present invention.
6A is a conceptual diagram of an apparatus, and FIG. 6B is a conceptual diagram of an apparatus used in the self-standing bag reinforcing material sticking process of the present invention. Three FIG.
FIG. 7 is an explanatory view of a spout attached to the self-supporting bag of the present invention, (a) a perspective view showing a spout main body, a lid, and a part of the attached bag, showing an embodiment; It is a perspective view which shows another Example of a spout.
FIG. 8 is a perspective view for explaining various self-supporting bags; (a) a standing pouch, (b) a side gusset type self-supporting bag, and (C) an upper and lower gusset type self-supporting bag.
[Explanation of symbols]
P Self-supporting bag of the present invention
S outlet
1 Reinforcing material
2 Front member or front panel
3 Rear members or rear panel
4 Side members or side panels
5 Heat seal part
5N unsealed part
6 Folding rules
10 Laminate forming a self-supporting bag
10a Reinforcing material insertion part or sticking part of laminated body forming self-supporting bag
10b Non-reinforcing part of laminated body forming self-supporting bag
11 Surface layer
12 Thermal fusion layer
13 Middle layer
14 Adhesive layer
15 Reinforcement substrate
16 Adhesive layer or heat sensitive adhesive
17 Ink
20 Outlet body
21 1st flange part
22 Adhesive base
23 Tube
24 Second flange
25 Third flange
26 Screw
27 Extension piece
28 Blocking prevention rib
30 Standing Pouch
31 Heat seal part
40 Side gusset type freestanding bags
41 Heat seal part
42 Outlet
50 Upper and lower gusset type free standing bags
51 Heat seal part
52 Outlet
KM Reinforcing material sticking device
60 rewinding machine
61 Reinforcement stocker
62 Conveyor
63 Activation part
64 stopper
65 pinch rolls
66 Substrate roll, etc.
67 Winding
68 Detector

Claims (1)

補強材の基体の表面に絵柄が設けられ、他面に感熱粘着剤を塗布乾燥したロール状の補強材の供給と該ロール状の補強材から所定の形状の補強材とする打ち抜き部、打ち抜かれた補強材をコンベア上に前記感熱粘着剤の塗布面を上に排出する供給部、移送コンベアおよび前記いずれかの位置に設けられる感熱粘着剤の活性化部、前記コンベアの先端に自立袋を形成する複合フィルムを積層したロール状フィルムを連続的または間欠的に移動させる巻き返し機、前記巻き返し機における前記ロール状フィルムの流れ位置を検知し、タイミングをとって前記複合フィルムの所定の位置に補強材を貼着する機能の貼着部から構成されることを特徴とする補強材の貼着装置。  A pattern is provided on the surface of the base material of the reinforcing material, a heat-sensitive adhesive is applied to the other surface, a roll-shaped reinforcing material is supplied and dried, and a punched portion that is a reinforcing material of a predetermined shape is punched from the roll-shaped reinforcing material. A supply unit that discharges the reinforcing material on the conveyor, a transfer conveyor, an activation unit for the thermal adhesive provided at any of the above positions, and a self-standing bag at the tip of the conveyor A roll-up machine for continuously or intermittently moving a roll-shaped film laminated with a composite film to be detected, a flow position of the roll-shaped film in the roll-up machine is detected, and a reinforcing material is taken at a predetermined position of the composite film at a timing It is comprised from the sticking part of the function which sticks a reinforcement, The sticking apparatus of the reinforcing material characterized by the above-mentioned.
JP07293699A 1998-12-18 1999-03-18 Reinforcing material sticking device Expired - Fee Related JP4372884B2 (en)

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JP10-359855 1998-12-18
JP35985598 1998-12-18
JP07293699A JP4372884B2 (en) 1998-12-18 1999-03-18 Reinforcing material sticking device

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JP2009083912A (en) * 2007-10-01 2009-04-23 Shinwa Sangyo Kk Rolled web for pillow packaging and pillow package
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