JP4178488B2

JP4178488B2 - Method for fixing detection agent and apparatus therefor

Info

Publication number: JP4178488B2
Application number: JP21945098A
Authority: JP
Inventors: 重治岩内; 昌彦大澤
Original assignee: Mitsubishi Gas Chemical Co Inc
Current assignee: Mitsubishi Gas Chemical Co Inc
Priority date: 1998-08-03
Filing date: 1998-08-03
Publication date: 2008-11-12
Anticipated expiration: 2018-08-03
Also published as: JP2000055902A

Description

【０００１】
【発明の属する技術分野】
本発明は、酸素検知等のための検知剤を対象体に固定する方法と、この方法を実施するための装置に関する。すなわち、本発明は、検知剤が対象体に固定されたものを製造するための方法とその装置に関する。
【０００２】
【従来の技術】
ある閉ざされた空間内における酸素の有無や多少などの環境を、色調の変化で表示する酸素検知剤（「酸素インジケ−ター」とも称される。）が、従来から知られている。
【０００３】
この酸素検知剤は、例えば、錠剤状に成形されたもの、紙、糸、脱脂綿、樹脂成形体等の多孔質物に酸素検知組成物溶液を含浸したもの、紙またはフィルムの表面に酸素検知組成物を塗布または印刷したものとして提案されている。この酸素検知剤は、そのままの形態、あるいはプラスチック積層フィルムに包装された状態で、主に脱酸素剤による食品等の品質保持の分野で広く利用されている。
【０００４】
また、これら酸素検知剤を、脱酸素剤包装体、又は、脱酸素剤を適用した商品の包装容器等である対象体に固定することも行われている。この固定に当たり、この酸知剤を接着剤や両面テープで固定する方法が提案され、実用化されている。最近では、脱酸素剤包装袋へ貼付されることを前提とした酸素検知剤が提案されている。例えば、実開平４−３９８０号には、シート状の酸素検知剤を接着剤、または両面テープで脱酸素剤包材に貼付けて一体型とする方法が提案されている。
【０００５】
【発明が解決しようとする課題】
しかしながら、この方法では食品等の被保存物に含まれる水分や油分が酸素検知剤まで浸透し、酸素検知反応に伴う変色機能が損なわれるおそれがあった。そこで、特開平８−２８７４０号には脱酸素剤包装袋／両面テープ／検知剤シート／透明フィルムをこの順に重ね合わせた、脱酸素剤一体型酸素検知剤が提案されている。
【０００６】
しかしながら、この方法では両面テープを使用するため、▲１▼離型紙が廃棄物として発生する、▲２▼切断性が悪い、▲３▼両面接着テープは取扱性、操作性が悪い等問題があった。
【０００７】
そこで、本願出願人は、従来の貼付用検知剤が有する上記のような耐水耐油性や厚みの問題あるいはコストの問題を解決して、実用範囲が広くかつ変色性能に優れた新規な貼付用検知剤を提案した（特願平９−２８５６６７号）。
【０００８】
本発明は、前記課題を解決しながら、係る新規な貼付用検知剤を、脱酸素包装体、包装袋、小袋包装体、包装箱、包装ケース、被包装物等の対象体に固定する方法、及びそのための装置を提供することを目的とするものである。
【０００９】
【課題を解決するための手段】
この目的を達成するために、本発明は請求項記載のとおりの方法、及び装置であることを特徴とする。
【００１０】
本発明の方法、及び装置によって得られる貼付用検知剤は、酸素検知剤の他、炭酸ガスなど他のガス成分、その他水分等を検知するものにも適用可能である。本発明によって得られる貼付用酸素検知剤の主要な形態は、次のとおりである。
【００１１】
テープ状基材に酸素検知剤組成物が印刷、や含浸等の手段によって固定されたテープ状酸素検知剤（ｌ）と、（ｌ）より幅が広く少なくとも一部分が透明な片面全面に粘着層を有するプラスチック製片面粘着テープ（２）とから成り、（２）の幅方向ほぼ中央に（ｌ）が粘着されているテープ状貼付用酸素検知剤。
【００１２】
（１）は、テープ状基材の片面に酸素検知組成物が塗布又は印刷されたものからなり、且つ（２）の幅方向ほぼ中央に（１）が酸素検知組成物面と粘着層が接するように粘着されるようにすることが好ましい。
【００１３】
（１）が、非透湿性のプラスチックフィルム、又は合成紙の片面に複数個の酸素検知組成物が一定間隔で塗布又は印刷されるように形成されることが好ましい。（２）の非粘着面に離型剤を塗布することが好ましい。
上記のテープ状貼付用酸素検知剤を適宜の長さに切断することにより、これをそのまま食品保存容器に適用することができる。
【００１４】
本発明によれば、上記の貼付用酸素検知剤が貼付された脱酸素剤包装体を提供することができる。
【００１５】
本発明において、テープ状とは、幅に対して長さが長く、厚みが幅より薄い形態を言う。本発明のテープ状貼付用酸素検知剤では、幅は３ｍｍ以上３０ｍｍ以下が好ましく、長さは貼付時に適宣の寸法に切断して使用されるので特に規定されないが、テープ状貼付用酸素検知剤の製造コストと使用時のコストを最小に保持するためには少なくとも数十ｍｍ以上を連続加工できることが好ましい。
【００１６】
本発明によって提供されるテープ状貼付用酸素検知剤は、テープ状酸素検知剤とプラスチック製の片面粘着テ−プ（以後、「片面粘着テープ」と称する場合がある。）の２部品のみから成り、極めてシンプルな構成であるために、生産性が高く低コスト化が可能であり、しかも応用時の操作性も高いため、酸素検知剤としてのトータルコストを低く設定できる。
【００１７】
更には、貼付のための粘着面を残したままテープ状酸素検知剤の酸素検知組成物面を片面粘着テープで粘着、密封するとの合理的な層構成を採用しているために、薄く柔軟性に富む上に酸素検知剤としての変色性能や耐水耐油性に優れていて、高湿度の過酷な使用条件下においても性能劣化を来すことなく本来の酸素検知性能が発揮される。
【００１８】
また柔軟性に優れることから、脱酸素剤包装袋や食品包装容器等の凹凸のある面や剛性の小さい面にも良好な貼り付け性が発揮される。また使用時に離型紙などの廃棄物が一切発生せず、使い勝手が良い。
【００１９】
尚、使用時に前記酸素検知剤は片面粘着テープを介して雰囲気中の酸素濃度が検知されるが、驚くべきことに酸素検知組成物が、テープを介することなく雰囲気に直接接している従来の酸素検知剤よりも応答速度が速い。片面粘着テープは、酸素検知性能劣化の要因となる過度の水分吸収を防止し、雰囲気ガスを適度に透過する機能を果たしている。また酸素検知剤を隙間なく密閉するので、検知剤成分の外部への移行を防止する。
【００２０】
【発明の実施の形態】
先ず、本発明によって提供される、前記貼付用酸素検知剤について説明する。図ｌは、このものの幅方向の断面図であり、（１）がテ−プ状酸素検知剤、（２）が片面粘着テープである。片面粘着テ−プは（３）のプラスチックフィルムの片面に（４）の粘着剤が全面に塗布または積層されているものである。
【００２１】
この片面粘着テープの幅方向ほぼ中央に、片面粘着テープの幅Ｂより小さい幅Ａを有するテープ状酸素検知剤が（４）の粘着剤によって固定される。幅Ｂより幅Ａを小さくすることにより、テープ状酸素検知剤の両側に粘着剤露出部Ｃ及びＣ’を残し、この部分を被着体（対象体）に貼付する。ＣとＣ’は被着体への貼付能力が失われない限り、必すしも同じ寸法でなくとも良い。
【００２２】
プラスチック製の片面粘着テープは、プラスチックフィルムの片面に粘着剤が全面に塗布、または積層されているものである。プラスチックフィルムの材質としては、ポリエチレン、ポリプロピレン、ポリエステル、ポリアミド、ポリカーボネート、アセテート、セロハン等があげられるが、透明性、柔軟性、強度等の面から、延伸ポリプロピレン又はポリエステルが好ましい。プラステックフィルムの厚みは実用的な強度と柔軟性があれば特に問わないが、５〜１００ミクロが好ましい。
【００２３】
プラスチックフィルムは、無色透明でも、酸素検知剤の色変化を見やすくするために適宜着色した透明のものでも良い。更に、酸素検知剤の色変化が判るように一部分を透明のまま残し、他の部分に隠蔽の文字や絵文字等の情報表示をしたり、酸素検知剤の色調変化を判別しやすくする目的で適宜の色調を持った印刷を施しても良い。
【００２４】
粘着剤としては合成ゴム系、天然ゴム系、アクリル系、シリコン系等既存のものを用いることができる。この際、粘着剤の種類と厚みは、酸素検知剤に用いる色素が染着したり色素の変色を阻害したりしないこと、透明性に優れること、安全衛生性に優れること、被着体に対する適度な接着性が得られること等を考慮して適宜選択すればよい。
【００２５】
プラスチックフィルムヘの粘着加工は、粘着剤をエマルジョンとして、又は溶剤で希釈して塗布後乾燥する、粘着剤を押し出し積層する、フィルム化した粘着剤を離型紙から転写する等、公知の各方法が用いられる。このようにして得られた片面粘着テープの幅はテープ状酸素検知剤の幅より大きく、図１に示すＣ及びＣ’の幅を確保できれば良いが、取り扱い性やコストの点から３〜５０ｍｍが好ましく、５〜３０ｍｍが特に好ましい。
【００２６】
また、図１のＣ及びＣ’の幅は各々１〜５ｍｍが好ましい。また紙管等に巻かれた片面粘着テ−プを巻き出す際に少ない抵抗で円滑に巻き出しが可能なように、非粘着面側にシリコン系、アルキッド樹脂系等の離型剤を塗布することが好ましい。
【００２７】
テープ状酸素検知剤とは、テープ状の基材に酸素検知組成物を塗布、印刷又は含浸などして固定したものであり、酸素検知組成物が周囲雰囲気の酸素濃度に応じて変色することにより酸素の有無を表示する。
【００２８】
酸素検知組成物としては、アントラキノン系、インジゴ系、ヂアジン系、硫化染料等の還元剤によって色変化を示す染料、アルカリ金属、又はアルカリ土類金属の水酸化物や塩等のアルカリ性物質、及び還元糖類等の還元剤を必須成分とする組成物が好ましく用いられる。
【００２９】
これらの必須成分に、必要に応じて、溶媒、還元剤によって変色しない染料又は顔料、水溶性高分子、バインダー樹脂等を組み合わせて添加し、テープ状基材に塗布、印刷又は含浸する。テープ状基材としては、紙、布、不織布、合成紙、フィルム等が用いられる。高湿度の過酷な条件下でも高い酸素検知性能を発揮するためにテープ状酸素検知剤としては、非透湿性の合成紙又はフィルムの片面に実質的に水分を含まない酸素検知組成吻を塗布又は印刷したものが好ましく用いられる。
【００３０】
テ−プ状酸素検知剤の幅は５ｍｍ以上２０ｍｍ以下が好ましく。狭すぎると見にくくなり、広すぎるとコスト高となって取り扱いにも不便になる。また厚みは柔軟性及び美観上、１ｍｍ以下が好ましく、０．００５ｍｍ以上０．５ｍｍ以下が特に好ましい。
【００３１】
テープ状酸素検知剤を片面粘着テープと組み合わせた際に、テ−プ長さ方向に色変化部を連続化しても良いが、色変化の判別をしやすくするためにテープ長さ方向で色変化部と変化しない部分とを交互に存在させることが好ましい。
【００３２】
図２乃至図４にこの好ましいパターンが例示されている。図２は、全面が透明な片面粘着テープと酸素検知組成物をドット状に断続的に配置したテープ状酸素検知剤とを組み合わせたものである。図３は、中央部を含む中央部寄りに長さ方向に連続した透明部を有する片面粘着テ−プと酸素検知組成物を縞状に配置したテープ状酸素検知剤とを組み合わせたものである。
【００３３】
図４は、中央部寄りに長さ方向に間欠的に透明部を有する片面粘着テープと全面に酸素検知組成物を配置したテープ状酸素検知剤とを組み合わせたものである。尚、これ等の例示に制限されるものではない。本発明のテープ状貼付用酸素検知剤は、片面粘着テープの幅方向ほぼ中央にテープ状酸素検知剤が酸素検知組成物面と粘着層が接するように粘着されているものであり、例えば数十ｍ以上のテープが紙管に巻き付けられた形状をしている。
【００３４】
このテープ状貼付用酸素検知剤を適宜の長さに切断して個々の貼付用酸素検知剤とし、食品の脱酸素包装等の用途で包材や脱酸素剤に貼り付けて使用する。
【００３５】
或いは、テープ状酸素検知剤と片面粘着テープのそれぞれを例えば数十ｍ以上の長尺で巻き取っておき、両者を同時に巻き出して重ね合わせ、直後に被着物に貼り付けて使用することもできる。特に、予め貼付用酸素検知剤が貼付された脱酸素剤包装体は、食品を脱酸素包装する際に便利に使用される。この貼付用酸素検知剤が貼付された脱酸素剤包装体を製造する方法としては、テープ状貼付用酸素検知剤と脱酸素剤連包体とを連続的に貼り付けた後、貼り付けたままの状態で脱酸素剤連包体が１個づつに分かれるよう切り離す方法が、コストが低く合理的である。
【００３６】
なお、本発明によって提供される貼付用酸素検知剤が前記目的を達成すること
【００３７】
は、既述の特願平９−２８５６６７号明細書における【実施例】の欄に記載されたとおりである。テープ状検知剤、片面粘着テープを構成するための具体的な構成は同欄に記載されている。
【００３８】
次に、この貼付用酸素検知剤を得るための方法、及び装置を具体的に説明する。この装置は、実用新案登録第２５６４２８２号公報に記載された、検知剤付き小袋の製造装置を改良したものである。
【００３９】
図５はこの検知剤付き小袋製造装置の一実施例を示す概念図であって、この装置は、帯状に複数個連結されてなる小袋の連包体としての脱酸素剤帯体を順次自動的に繰り出す連包体自動供給設備Ａと、酸素検知組成物がテープ状基材に固定されたテープ状酸素検知剤を順次、被着物（対象体）としての脱酸素剤帯体に向けて連続的に送り出す酸素検知剤自動供給設備Ｂと、既述のプラスチック製片面粘着テープを脱酸素剤に向けて連続的に送り出す粘着テープ自動供給設備Ｃと、脱酸素剤帯体に前記テープ状貼付用酸素検知剤を貼付固定し、形成された帯状の検知剤付き小袋連包体を１袋ごとの小袋に切断して１個単位の検知剤付き小袋に形成する設備Ｄとから構成される。
【００４０】
この設備Ｄから移送されてきた検知剤付き小袋を包装機等のコンベアラインにシユートを介して投入し、自動製袋されながら食品を充填した後、シールされて包装袋となる。
【００４１】
前記自動供給設備Ａは、帯状の脱酸素剤７１が所定量ドラム（筒状）に巻きつけられたものが掛けられている脱酸素剤帯状アンリール７２とガイドローラ７３，７４及び５から成り、このアンリール７２から脱酸素剤７１がガイドローラ７３，７４及び５を介して順次自動的に、次工程にあるテープ状酸素検知剤を自動供給する設備Ｂ、及び、片面粘着テープをこの脱酸素剤帯体に自動供給する設備Ｃへ逐次繰り出される。
【００４２】
この設備Ｂは、酸素検知紙３５をガイドロール３１乃至３４を介して脱酸素剤帯体１に繰り出す酸素検知紙テープアンリール３０を備えている。また、前記設備Ｃは、プラスチック製片面粘着テープ４４を、ガイドロール４１，４２を介して前記脱酸素剤帯体１に向けて繰り出す粘着テープロール４３と、このロール４３が掛けられたテープアンリール４０とを備えている。
【００４３】
前記設備Ｄは、前記酸素検知紙３５を間に挟んだ状態で片面粘着テープ４４を脱酸素剤帯体７１に接着させる圧着手段と、検知剤付き脱酸素剤帯体を検知紙が付いた脱酸素小袋の一つ一つに切断するためのカッター２１を含むカッター機構を備えている。このカッター機構の構成及び動作は前記実用新案登録第２５６４２８２号公報に記載のものを適用することができる。
【００４４】
前記脱酸素剤帯体は、複数の脱酸素剤小袋がシール部を介して長さ方向に連なった構造を持っている。この構造も同公報の図２及び図３並びに関連説明において記載されたものと同一である。
【００４５】
圧着手段は、酸素検知紙３５と片面粘着テープ４４とから図１に示されたテープ状貼付用酸素検知剤を形成しつつこれを脱酸素剤帯体１に貼付、接着、或いは添着する。図１において説明したように、片面接着テープ（３）の幅方向の中心に酸素検知テープ（１）を接着し、片面粘着テープ（３）の長さ方向の両側に酸素検知テープ（４）が粘着されていない接着剤（４）の部分ＣとＣ'を形成する。このような構成になるように、酸素検知紙３５及び片面粘着テープ４４が前記供給設備を介して圧着手段に送られる。
【００４６】
本実施形態では、脱酸素剤帯体１の送り方向に沿って二組の圧着手段が存在する。符号１０，１１及び符号１２，１３はこの圧着手段を形成する。符号１０，１２は圧着ゴムローラ、１１，１３は圧着ローラをそれぞれ示す。これら圧着ローラ間に帯体１、酸素検知紙３５、及びテープ４４が送り出されて、互いに圧着されることにより、図１において説明したように、テープ状貼付用酸素検知剤が貼付された脱酸素剤帯体が形成され、送りローラ２０によってこの帯体がカッター機構２１に誘導される。
【００４７】
図６は、前記製造装置の一部を拡大して示したものである。図６は、脱酸素剤の小袋がシール部を介して長さ方向に連接された脱酸素剤帯体７１に、酸素検知紙３５を介して片面粘着テープ４４が粘着された状態を示している。
【００４８】
図７は、テープ状貼付用酸素検知剤が貼付された脱酸素剤帯体を正面から観た正面図である。脱酸素剤帯体７１の長さ方向の中心に酸素検知剤紙３５の幅方向の中心がほぼ来るようにして、片面粘着テープ４４の幅方向のほぼ中心をこの帯体７１の幅方向の中心に合わせて粘着する。前記カッター機構２１は、この帯体のシール部１００をカッターで切断する。符号３５ａは、テープ基材に固定された酸素検知剤組成物のパターンである。
【００４９】
この片面粘着テープは通気性を有するものでも、それが無いものでも特に制限されない。要は、酸素検知組成物が発揮する酸素検知反応に伴う変色に影響を与えないように、油や水等の溶液が酸素検知組成物に至ることを、粘着テープが防止できることが、重要である。酸素等の被検知成分は、脱酸素剤帯体のうちこの粘着テープが存在しない面から酸素検知紙に到達できる。
【００５０】
本発明のテープ状貼付用酸素検知剤によれば、構成がシンプルなので低コストで製造でき、かつ一般の片面粘着テープと同様の薄いテープ状とすることができるため単純な器具で任意の長さに切断して使用できるほか、機械的に自動製造、切断、貼付を行うこともでき、極めて使い勝手に優れる効果が達成される。
【００５１】
また、酸素濃度の変化に極めて速やかに対応して変色し、目視により容易に酸素濃度を判別することができる。更に水分や油分の多い環境下でも色調の異常を示すことがなく、安心して脱酸素剤包装食品等の品質管理に利用でき、脱酸素剤包装体に貼付した状態で在庫しても色調、変色速度の劣化がなく、脱酸素剤貼付用の酸素検知剤としても優れた性能を有する。また脱酸素剤包装の用途以外にも、酸素濃度を色調で表示でき、変色速度に優れ、色調の安定性にも優れることを利用して、食品を始めとする各種物品の包装、各種装置の安全管理等に市販の粘着テープあるいはラベル、ワッペンと同様の手軽さで使用することが可能である。
【００５２】
【発明の効果】
本発明によれば、新規な貼付用検知剤を、脱酸素包装体、包装袋、包装箱、包装ケース、被包装物等の対象体に固定する方法、及びそのための装置を提供することができる。
【図面の簡単な説明】
【図ｌ】本発明のテ−プ状貼付用酸素検知剤の一例を示す、その幅方向の断面図である。
【図２】本発明に係わるテープ状貼付用酸素検知剤の表示形態の一例を示す見取り図である。
【図３】本発明に係わるテ−プ状貼付用酸素検知剤の表示形態の他の例を示す見取り図である。
【図４】本発明に係わるテープ状貼付用酸素検知剤の表示形態のさらに他の例を示す見取り図である。
【図５】本発明に係わる固定方法を実施するための製造装置の一例を示す構成図である。
【図６】図５に示された構成図の一部拡大図である。
【図７】テープ状貼付用酸素検知剤が固定された脱酸素剤帯体の正面図である。
【符号の説明】
−
１テープ状酸素検知剤
２片面粘着テープ
３プラスチックフィルム
４粘着剤
３５酸素検知紙
３５ａ酸素検知組成物パターン
４４片面粘着テープ
７１脱酸素剤帯体[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for fixing a detection agent for oxygen detection or the like to an object and an apparatus for carrying out this method. That is, the present invention relates to a method and an apparatus for manufacturing a detection agent fixed to a target body.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, oxygen detectors (also referred to as “oxygen indicators”) that display the presence or absence of oxygen in a closed space and the environment such as the degree of change by a change in color tone have been known.
[0003]
This oxygen detection agent is, for example, one formed into a tablet, one obtained by impregnating a porous material such as paper, thread, absorbent cotton, resin molding, etc. with an oxygen detection composition solution, or the oxygen detection composition on the surface of paper or film. Has been proposed as a coating or printing. This oxygen detector is widely used mainly in the field of maintaining the quality of foods and the like using an oxygen scavenger, in the form as it is or in the state of being packaged in a plastic laminated film.
[0004]
In addition, these oxygen detectors are also fixed to a target object such as an oxygen scavenger packaging body or a packaging container of a product to which the oxygen scavenger is applied. For this fixing, a method for fixing the acid sensation agent with an adhesive or a double-sided tape has been proposed and put into practical use. Recently, oxygen detectors based on the assumption that they are attached to oxygen scavenger packaging bags have been proposed. For example, Japanese Utility Model Laid-Open No. 4-3980 proposes a method in which a sheet-like oxygen detector is attached to an oxygen scavenger packaging material with an adhesive or a double-sided tape so as to be integrated.
[0005]
[ Problems to be solved by the invention ]
However, in this method, moisture or oil contained in a stored object such as food penetrates to the oxygen detection agent, and there is a possibility that the discoloration function accompanying the oxygen detection reaction is impaired. In view of this, JP-A-8-28740 proposes an oxygen detector integrated oxygen detector in which an oxygen absorber packaging bag / double-sided tape / detector sheet / transparent film are superposed in this order.
[0006]
However, since double-sided tape is used in this method, (1) release paper is generated as waste, (2) poor cutting performance, and (3) double-sided adhesive tape has poor handling and operability. It was.
[0007]
Therefore, the applicant of the present application solves the above-mentioned problems of water resistance, oil resistance, thickness, and cost of the conventional detection agent for sticking, and has a wide range of practical use and a novel detection for sticking with excellent discoloration performance. An agent was proposed (Japanese Patent Application No. 9-285667).
[0008]
The present invention is a method for fixing the novel detection agent for sticking to a target object such as a deoxygenated package, a packaging bag, a small bag package, a packaging box, a packaging case, an article to be packaged, while solving the above-mentioned problems, And it aims at providing the apparatus for it.
[0009]
[Means for Solving the Problems]
In order to achieve this object, the invention is characterized in that it is a method and a device as claimed.
[0010]
The detection agent for sticking obtained by the method and apparatus of the present invention can be applied to an oxygen detection agent, other gas components such as carbon dioxide, and other substances that detect moisture. The main forms of the oxygen detector for patch obtained by the present invention are as follows.
[0011]
A tape-like oxygen detector (l) in which an oxygen detector composition is fixed on a tape-like substrate by printing, impregnation, or the like, and an adhesive layer on the entire surface of one side that is wider and at least partially transparent than (l). A tape-like oxygen detector for sticking, comprising: a plastic single-sided pressure-sensitive adhesive tape (2) having (1) adhered substantially at the center in the width direction of (2).
[0012]
(1) consists of one surface of the tape-like base material coated or printed with an oxygen detection composition, and (1) is in contact with the oxygen detection composition surface and the adhesive layer at approximately the center in the width direction of (2). It is preferable to make it stick.
[0013]
(1) is preferably formed so that a plurality of oxygen-sensing compositions are applied or printed at regular intervals on one surface of a moisture-impermeable plastic film or synthetic paper. It is preferable to apply a release agent to the non-adhesive surface of (2).
By cutting the tape-like oxygen detector for sticking to an appropriate length, it can be applied to a food storage container as it is.
[0014]
According to the present invention, it is possible to provide an oxygen scavenger package in which the oxygen detecting agent for sticking is attached.
[0015]
In the present invention, the tape shape refers to a form having a length longer than the width and a thickness thinner than the width. In the oxygen detecting agent for tape-like application of the present invention, the width is preferably 3 mm or more and 30 mm or less, and the length is not particularly specified because it is used after being cut to an appropriate size at the time of application. In order to keep the manufacturing cost and the cost during use to a minimum, it is preferable that at least several tens of mm or more can be continuously processed.
[0016]
The oxygen detecting agent for sticking tape provided by the present invention consists of only two parts: a tape-like oxygen detecting agent and a plastic single-sided adhesive tape (hereinafter sometimes referred to as “single-sided adhesive tape”). Since the structure is extremely simple, the productivity is high and the cost can be reduced, and the operability at the time of application is also high, so that the total cost as an oxygen detector can be set low.
[0017]
Furthermore, it is thin and flexible because it employs a rational layer structure in which the oxygen-sensing composition surface of the tape oxygen detector is adhered and sealed with a single-sided adhesive tape while leaving the adhesive surface for application. In addition to being excellent in discoloration performance and water / oil resistance as an oxygen detection agent, the original oxygen detection performance is exhibited without causing performance deterioration even under severe usage conditions of high humidity.
[0018]
Moreover, since it is excellent in a softness | flexibility, favorable sticking property is exhibited also on the surface with unevenness | corrugation, such as an oxygen absorber packaging bag, a food packaging container, or a surface with small rigidity. In addition, no waste such as release paper is generated at the time of use, and it is easy to use.
[0019]
In use, the oxygen detector detects the oxygen concentration in the atmosphere via a single-sided adhesive tape. Surprisingly, the oxygen detector composition is in contact with the atmosphere without using the tape. Response speed is faster than the detection agent. The single-sided adhesive tape functions to prevent excessive moisture absorption that causes deterioration in oxygen detection performance and to appropriately transmit atmospheric gas. Further, since the oxygen detecting agent is sealed without a gap, the detection agent component is prevented from being transferred to the outside.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
First, the sticking oxygen detection agent provided by the present invention will be described. FIG. 1 is a cross-sectional view in the width direction, in which (1) is a tape-shaped oxygen detector and (2) is a single-sided adhesive tape. The single-sided adhesive tape is one in which the adhesive (4) is applied or laminated on the entire surface of the plastic film (3).
[0021]
A tape-shaped oxygen detecting agent having a width A smaller than the width B of the single-sided adhesive tape is fixed by the adhesive of (4) at approximately the center in the width direction of the single-sided adhesive tape. By making the width A smaller than the width B, the pressure-sensitive adhesive exposed portions C and C ′ are left on both sides of the tape-shaped oxygen detector, and this portion is attached to the adherend (target body). C and C ′ do not necessarily have the same dimensions as long as the ability to adhere to the adherend is not lost.
[0022]
A plastic single-sided adhesive tape is one in which an adhesive is applied or laminated on one side of a plastic film. Examples of the material of the plastic film include polyethylene, polypropylene, polyester, polyamide, polycarbonate, acetate, cellophane, and the like. From the viewpoint of transparency, flexibility, strength, and the like, stretched polypropylene or polyester is preferable. The thickness of the plastic film is not particularly limited as long as it has practical strength and flexibility, but is preferably 5 to 100 micron.
[0023]
The plastic film may be colorless and transparent, or a transparent film that is appropriately colored to make the color change of the oxygen detector easy to see. Furthermore, in order to make the color change of the oxygen detection agent remain clear so that the color change of the oxygen detection agent can be seen, information such as concealed characters and pictograms can be displayed on other parts, and the color change of the oxygen detection agent can be easily identified. You may print with the color tone.
[0024]
As the pressure-sensitive adhesive, existing ones such as synthetic rubber type, natural rubber type, acrylic type, and silicon type can be used. At this time, the type and thickness of the pressure-sensitive adhesive are such that the dye used for the oxygen detector does not stain or inhibit discoloration of the dye, is excellent in transparency, is excellent in safety and hygiene, and is appropriate for the adherend. May be selected as appropriate in consideration of obtaining good adhesiveness.
[0025]
Adhesive processing to plastic film is carried out by various known methods such as drying the adhesive as an emulsion or by diluting with a solvent, extruding the adhesive and laminating it, and transferring the filmed adhesive from the release paper. Used. The width of the single-sided adhesive tape thus obtained is larger than the width of the tape-like oxygen detector, and it is sufficient if the widths of C and C ′ shown in FIG. 1 can be ensured. Preferably, 5 to 30 mm is particularly preferable.
[0026]
Further, the widths of C and C ′ in FIG. In addition, a silicone or alkyd resin release agent is applied to the non-adhesive surface so that it can be smoothly unwound with little resistance when unwinding a single-sided adhesive tape wound around a paper tube. It is preferable.
[0027]
A tape-shaped oxygen detector is a tape-shaped base material that is fixed by applying, printing, or impregnating an oxygen-sensing composition, and the oxygen-sensing composition changes color according to the oxygen concentration in the surrounding atmosphere. Displays the presence or absence of oxygen.
[0028]
Oxygen detection compositions include anthraquinone, indigo, diazine, dyes that change color with a reducing agent such as sulfur dyes, alkaline substances such as hydroxides or salts of alkali metals or alkaline earth metals, and reduction. A composition containing a reducing agent such as sugar as an essential component is preferably used.
[0029]
If necessary, these essential components are added in combination with a solvent, a dye or pigment that does not change color with a reducing agent, a water-soluble polymer, a binder resin, and the like, and applied, printed, or impregnated on a tape-like substrate. As the tape-like substrate, paper, cloth, nonwoven fabric, synthetic paper, film, or the like is used. In order to exhibit high oxygen detection performance even under severe conditions of high humidity, as a tape-like oxygen detection agent, an oxygen detection composition snout that is substantially free of moisture is applied to one side of a non-breathable synthetic paper or film. A printed one is preferably used.
[0030]
The width of the tape-shaped oxygen detector is preferably 5 mm or more and 20 mm or less. If it is too narrow, it will be difficult to see, and if it is too wide, it will be expensive and inconvenient to handle. The thickness is preferably 1 mm or less, particularly preferably 0.005 mm or more and 0.5 mm or less in view of flexibility and aesthetics.
[0031]
When a tape-like oxygen detector is combined with a single-sided adhesive tape, the color change part may be continuous in the tape length direction, but the color change in the tape length direction makes it easy to distinguish the color change. It is preferable that the part and the part which does not change exist alternately.
[0032]
This preferred pattern is illustrated in FIGS. FIG. 2 is a combination of a single-sided adhesive tape whose entire surface is transparent and a tape-shaped oxygen detection agent in which an oxygen detection composition is intermittently arranged in dots. FIG. 3 is a combination of a single-sided adhesive tape having a transparent portion continuous in the length direction near the central portion including the central portion and a tape-shaped oxygen detecting agent in which the oxygen detecting composition is arranged in a stripe pattern. .
[0033]
FIG. 4 is a combination of a single-sided adhesive tape having a transparent portion intermittently in the length direction near the center and a tape-like oxygen detector having an oxygen detection composition disposed on the entire surface. Note that these examples are not restrictive. The oxygen detection agent for tape-like application of the present invention is one in which the tape-like oxygen detection agent is adhered so that the oxygen detection composition surface and the adhesive layer are in contact with each other at substantially the center in the width direction of the single-sided adhesive tape. m or more tapes are wound around a paper tube.
[0034]
The tape-like oxygen detector for sticking is cut into an appropriate length to obtain individual oxygen detectors for sticking, and is used by being attached to a packaging material or oxygen absorber for uses such as deoxidation packaging of food.
[0035]
Alternatively, each of the tape-shaped oxygen detector and the single-sided adhesive tape can be wound up in a long length of, for example, several tens of meters, and both can be unwound at the same time, overlapped, and immediately attached to the adherend. In particular, the oxygen scavenger package in which the oxygen detecting agent for pasting is affixed in advance is used conveniently when food is deoxygenated and packaged. As a method for producing the oxygen scavenger package with the oxygen detecting agent attached, the tape-like oxygen detecting agent and the oxygen scavenger package are continuously attached, and are then attached. In this state, the method of separating the oxygen scavenger continuous package so as to be separated one by one is low in cost and reasonable.
[0036]
It should be noted that the oxygen detecting agent for patch provided by the present invention achieves the above object.
Is as described in the column of [Example] in the above-mentioned Japanese Patent Application No. 9-285667. The specific structure for constituting the tape-shaped detection agent and the single-sided adhesive tape is described in the same column.
[0038]
Next, the method and apparatus for obtaining this oxygen sensor for sticking are demonstrated concretely. This apparatus is an improvement of the manufacturing apparatus for a sachet with a detection agent described in Utility Model Registration No. 2564282.
[0039]
FIG. 5 is a conceptual diagram showing an embodiment of the sachet-attached sachet manufacturing apparatus. This apparatus automatically and sequentially removes the oxygen scavenger strip as a continuous package of sachets connected in a strip shape. The continuous package automatic supply equipment A that is fed out and the tape-shaped oxygen detection agent in which the oxygen detection composition is fixed to the tape-shaped base material are successively directed toward the oxygen scavenger band as the adherend (target object). Oxygen detection agent automatic supply equipment B to be sent to the device, adhesive tape automatic supply equipment C to send the aforementioned single-sided adhesive tape made of plastic continuously toward the oxygen scavenger, and oxygen for tape application to the oxygen scavenger strip The detection agent is pasted and fixed, and the formed strip-shaped sachet-attached sachet package is cut into sachets for each bag to form a single unit of detection agent-attached sachet.
[0040]
The detection agent-attached sachet transferred from the equipment D is put into a conveyor line of a packaging machine or the like via a shot, filled with food while being automatically made, and then sealed to become a packaging bag.
[0041]
The automatic supply facility A is composed of a deoxidant strip-shaped unreel 72 and a guide roller 73, 74 and 5 on which a strip-shaped deoxidizer 71 is wound around a predetermined amount of drum (tubular). The oxygen scavenger 71 from the unreel 72 is automatically and sequentially supplied through the guide rollers 73, 74 and 5 in order to automatically supply the tape-like oxygen detector in the next process, and the single-sided adhesive tape is connected to the oxygen scavenger band. It is successively fed out to the equipment C that automatically supplies the body.
[0042]
This equipment B includes an oxygen detection paper tape unreel 30 that feeds the oxygen detection paper 35 to the oxygen absorber strip 1 through guide rolls 31 to 34. Moreover, the plant C is a plastic single-sided adhesive tape 44, the adhesive tape roll 43 for feeding out toward the oxygen absorber band body 1 via a guide roll 41, the tape-en reel this roll 43 has been subjected 40.
[0043]
The equipment D includes a pressure-bonding means for adhering the single-sided adhesive tape 44 to the oxygen absorber strip 71 with the oxygen detector paper 35 sandwiched therebetween, and a deoxidizer strip with a detector attached to the oxygen absorber strip 71. A cutter mechanism including a cutter 21 for cutting each oxygen sachet is provided. As the configuration and operation of this cutter mechanism, those described in the above-mentioned utility model registration No. 2564282 can be applied.
[0044]
The oxygen scavenger band has a structure in which a plurality of oxygen scavenger pouches are connected in the length direction via a seal portion. This structure is also the same as that described in FIGS. 2 and 3 and the related description of the publication.
[0045]
The pressure bonding means affixes, adheres, or attaches the tape-like oxygen detecting agent shown in FIG. 1 to the oxygen absorber strip 1 while forming the oxygen detecting paper 35 and the single-sided adhesive tape 44 as shown in FIG. As described in FIG. 1, the oxygen detection tape (1) is bonded to the center in the width direction of the single-sided adhesive tape (3), and the oxygen detection tape (4) is attached to both sides of the single-sided adhesive tape (3) in the length direction. Form parts C and C ′ of the adhesive (4) which is not sticked. The oxygen detection paper 35 and the single-sided adhesive tape 44 are sent to the crimping means via the supply equipment so as to have such a configuration.
[0046]
In this embodiment, there are two sets of crimping means along the feeding direction of the oxygen scavenger strip 1. Reference numerals 10 and 11 and reference numerals 12 and 13 form this crimping means. Reference numerals 10 and 12 denote pressure-bonding rubber rollers, and 11 and 13 denote pressure-bonding rollers, respectively. The band 1, the oxygen detection paper 35, and the tape 44 are sent out between these pressure-bonding rollers and are pressure-bonded to each other, so that the deoxygenation with the tape-shaped oxygen detection agent attached as described in FIG. An agent band is formed, and this band is guided to the cutter mechanism 21 by the feed roller 20.
[0047]
FIG. 6 is an enlarged view of a part of the manufacturing apparatus. FIG. 6 shows a state in which the single-sided adhesive tape 44 is adhered to the oxygen scavenger strip 71 in which the oxygen scavenger sachet is connected in the length direction via the seal portion via the oxygen detection paper 35. .
[0048]
FIG. 7 is a front view of the oxygen scavenger band to which the tape-like oxygen detecting agent is attached as viewed from the front. The width direction of the center of the oxygen detecting agent sheet 35 in the longitudinal direction of the center of the oxygen scavenger of strips 71 as almost come, substantially centered on the center in the width direction of the band member 71 in the width direction of the single-sided adhesive tape 44 Adhere to match. The cutter mechanism 21 cuts the seal portion 100 of the band with a cutter. The code | symbol 35a is the pattern of the oxygen detection agent composition fixed to the tape base material.
[0049]
This single-sided adhesive tape is not particularly limited even if it has air permeability or does not have air permeability. In short, it is important that the adhesive tape can prevent a solution such as oil or water from reaching the oxygen detection composition so as not to affect the discoloration associated with the oxygen detection reaction exhibited by the oxygen detection composition. . A component to be detected such as oxygen can reach the oxygen detection paper from the side where the adhesive tape is not present in the oxygen absorber strip.
[0050]
According to the oxygen detection agent for tape-like application of the present invention, since it has a simple structure, it can be manufactured at a low cost, and can be made into a thin tape shape similar to a general single-sided adhesive tape. In addition to being able to be cut and used, automatic manufacturing, cutting and sticking can also be performed mechanically, thereby achieving an effect that is extremely easy to use.
[0051]
Further, the color changes in response to the change in oxygen concentration very quickly, and the oxygen concentration can be easily discriminated visually. In addition, there is no abnormality in the color tone even in environments with a lot of moisture or oil, and it can be used for quality control of oxygen-absorbing agent packaged foods with peace of mind. There is no deterioration in speed, and it has excellent performance as an oxygen detector for attaching an oxygen scavenger. In addition to the use of oxygen scavenger packaging, the oxygen concentration can be displayed in color tone, and the speed of discoloration and the stability of color tone are utilized, so that packaging of various items such as food and various devices It can be used for safety management as easily as a commercially available adhesive tape, label, or emblem.
[0052]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the method for fixing the novel detection agent for sticking to target objects, such as a deoxygenation packaging body, a packaging bag, a packaging box, a packaging case, and a to-be-packaged object, and the apparatus for it can be provided. .
[Brief description of the drawings]
FIG. 1 is a cross-sectional view in the width direction showing an example of a tape-like oxygen detecting agent for tape application of the present invention.
FIG. 2 is a sketch showing an example of a display form of an oxygen detecting agent for tape-like application according to the present invention.
FIG. 3 is a sketch showing another example of the display form of the tape-like oxygen detector for tape application according to the present invention.
FIG. 4 is a sketch drawing showing still another example of the display form of the tape-like oxygen detector for sticking according to the present invention.
FIG. 5 is a configuration diagram showing an example of a manufacturing apparatus for carrying out the fixing method according to the present invention.
6 is a partially enlarged view of the configuration diagram shown in FIG.
FIG. 7 is a front view of an oxygen scavenger band to which an oxygen detection agent for tape-like application is fixed.
[Explanation of symbols]
−
1 tape oxygen detector
2- sided adhesive tape
3 plastic film
4 Adhesive 35 Oxygen Sensing Paper 35a Oxygen Sensing Composition Pattern 44 Single-sided Adhesive Tape
71 oxygen scavenger belt

Claims

In a method of fixing a strip-shaped detection agent to a strip-shaped object to which a detection agent is applied, an adhesive layer is formed on the object side, and at least a part of the single-sided adhesive tape is transparent. Between the detection agent and the adhesive layer of the single-sided adhesive tape is in contact, and the single-sided adhesive tape is attached to the object so that the detection agent is sealed without a gap. Method.

A tape-shaped detection agent having an oxygen detection composition fixed to a tape-shaped substrate, and a plastic single-sided adhesive tape having an adhesive layer on one side that is wider and at least partially transparent than the detection agent. A method for fixing a detection agent for sticking to a tape in which the detection agent is adhered to the center in the width direction of a single-sided pressure-sensitive adhesive tape to an object comprising an oxygen scavenger band, Among the objects, the tape-shaped detection agent and the adhesive layer of the single-sided adhesive tape are in contact with a portion where the tape-shaped detection agent is not adhered, and the single-sided adhesive tape seals the tape-shaped detection agent without a gap. A detection agent fixing method for fixing the tape-like detection agent for application to a target body by applying the detection agent to the body.

It consists of a tape-shaped detection agent in which a composition for oxygen detection is fixed to a tape-shaped substrate, and a plastic single-sided adhesive tape having an adhesive layer on one side that is wider and at least partially transparent than this detection agent. A method for fixing a detection agent for sticking to a tape, in which the detection agent is adhered to the center of the tape in the width direction, to an object composed of an oxygen scavenger band, and comprising the one-sided adhesive tape and the object The tape-shaped detection agent is sandwiched between them, the adhesive layer of the single-sided adhesive tape is in contact with the tape-shaped detection agent, and the single-sided adhesive tape seals the tape-shaped detection agent without a gap. A detection agent fixing method of fixing the tape-shaped detection agent for sticking to a target body by sticking to the target body.

At least a part of the means for sending out the object consisting of the oxygen scavenger band, the means for sending out the tape-like oxygen detector toward the object through the guide roll, and the adhesive layer formed on the object side Means for sending the transparent single-sided adhesive tape toward the target body through a guide roll, and between the target body and the single-sided adhesive tape, the detection agent and the adhesive layer of the single-sided adhesive tape are in contact with each other, and A detecting agent fixing device comprising: means for applying an adhesive layer of the single-sided adhesive tape to the object so that the single-sided adhesive tape seals the detecting agent without any gap.

It consists of a tape-shaped detection agent in which an oxygen detection composition is fixed to a tape-shaped substrate, and a plastic single-sided adhesive tape having an adhesive layer on at least a part of which is transparent. The detection agent adheres to this single-sided adhesive tape. A device for fixing a tape-like detection agent for sticking to a target body comprising an oxygen scavenger band to which the sticking detection agent is applied, wherein the first means for continuously feeding out the target body A second means for continuously feeding the tape-shaped detection agent toward the target body via a guide roll; and further, sending the plastic single-sided adhesive tape toward the target body continuously via a guide roll. Third means, so that the tape-shaped detection agent is sandwiched between the single-sided adhesive tape and the object, the adhesive layer of the single-sided adhesive tape is in contact with the tape-shaped detection agent, One the single-sided adhesive tape and a fourth means for affixing to the subject so as to seal without gaps, the tape-shaped sensing agent detecting agent fixing device.

6. The apparatus according to claim 5 , wherein the plastic single-sided adhesive tape is wider than the tape-like detection agent, and the tape-like detection agent and the adhesive layer of the single-sided adhesive tape are in contact with each other. The tape-shaped detection agent is sealed without gaps, and the fourth means is arranged such that the tape-shaped adhesive detection agent is positioned closer to the center in the width direction of the single-sided adhesive tape. A detecting agent fixing device configured to provide, on the both sides in the width direction of the single-sided adhesive tape, portions where the tape-shaped detecting agent is not adhered to the surface on which the layer is formed, and to attach the portions to the object. .

4. The detection agent according to any one of claims 1 to 3, wherein a plurality of oxygen detection compositions are applied or printed at regular intervals or continuously on one side of a moisture-impermeable plastic film or synthetic paper. the method of.

The object is a strip-shaped oxygen scavenger package, the detection agent and the single-sided adhesive tape are in contact with the tape-like detection agent and the adhesive layer of the single-sided adhesive tape, and the single-sided adhesive tape is the detection agent. The oxygen absorber continuous package is separated so as to be separated into one piece after being continuously pasted to the continuous package so as to be sealed without a gap. The method according to any one of 1 to 3.

The apparatus according to any one of claims 4 to 6, wherein the detection agent is obtained by applying or printing a plurality of oxygen detection compositions at regular intervals on one side of a moisture-impermeable plastic film or synthetic paper.

The object is a strip-shaped oxygen scavenger package, the detection agent and the single-sided adhesive tape are in contact with the tape-like detection agent and the adhesive layer of the single-sided adhesive tape, and the single-sided adhesive tape is the detection agent. The oxygen absorber continuous package is separated so as to be separated into one piece after being continuously pasted to the continuous package so as to be sealed without a gap. The apparatus according to any one of 4 to 6.