JP4447225B2

JP4447225B2 - Synthetic resin lid

Info

Publication number: JP4447225B2
Application number: JP2003035919A
Authority: JP
Inventors: 雅博反保
Original assignee: Dai Nippon Printing Co Ltd
Current assignee: Dai Nippon Printing Co Ltd
Priority date: 2003-02-14
Filing date: 2003-02-14
Publication date: 2010-04-07
Anticipated expiration: 2023-02-14
Also published as: JP2004244066A

Description

【０００１】
【発明の属する技術分野】
本発明は、家庭用に使用される機会の多いウェットシート或いはその他の収納物を密閉して収納する合成樹脂製成型容器のうち、フランジ付きカップ状容器に取り付けられる合成樹脂製蓋体に関するもので、特にフランジ部の厚みに対応して取り付けることができる合成樹脂製蓋体に関する。
【０００２】
【従来の技術】
従来、合成樹脂製成型容器のうち、射出成型（インジェクション成型）或いは真空成型（バキューム成型）等による上面が開放したカップ状容器に、開放部上端の周鍔部いわゆるフランジと呼ばれ、通常では幅の狭小な水平縁部が、開放部形状を維持するため或いは密封のためのシール部として設けられており、フランジ部に嵌合する突起を内部に設けた合成樹脂成型蓋を嵌合させてなる容器が、周知の技術として一般に使用されている。またウェットティッシュのように液体で湿潤させた製品の包装容器としては、瓶状に形成された成型容器の上部に、引出し口を設け、ウェットティッシュを一枚ずつ引き出せる形式としたものも一般的である。しかしながら内容物によっては、取出し口の大きな容器が必要で、例えばアルコール入りカット綿（アルコールで湿潤させた化粧用カット綿）などには、上面が開放したカップ状容器本体に、本体フランジ部に係着されるリング状枠部と該リング状枠部にヒンジ部で開閉自在に連結された蓋部とからなる一体成型された蓋体を、係着してなる包装体が開示されている。（例えば特許文献１参照。）。
【０００３】
【特許文献１】
特開２００２−３０８３３３号公報
【０００４】
上記文献に記載されている発明に係る包装体は、前述したようにアルコール入りカット綿が多数枚積層され収容されるポリプロピレンやポリエチレン等の合成樹脂を成型してなるカップ型の容器本体と、該容器本体の上端に形成される周鍔部に接着され密封するための紙又は合成樹脂材等の単数層又は複数層の閉塞用シートと、前記周鍔部に外嵌合するように取り付けられるポリプロピレンやポリエチレン等の合成樹脂を用いて蓋部とリング状枠部とが一体成型された蓋体とからなるもので、流通段階においては、前記容器本体は前記閉塞用シートで接着密封され、かつ前記リング状枠部が外嵌合され蓋部も閉じられた状態である。使用にあたっては、前記蓋体を容器本体から外しすなわちリング状枠部の外嵌合を解除し、閉塞用シートを剥離した後、リング状枠部を再度外嵌合させることにより、蓋体を容器本体に取り付け、蓋部の開閉により継続使用に供される。
【０００５】
上記従来技術の発明に係る包装体の実施例において、容器本体の上端に形成される周鍔部はその周縁に下側に向けてわずかな垂下部が形成されるとともに、蓋部と一体成型されたリング状枠部の外壁部の内側には、部分的に又は全周にわたって突起部が形成されて、前記周鍔部の垂下部に係合されるものであるが、前述の如く、閉塞用シートを接着密封した状態で嵌合されて流通され、使用の際には閉塞用シートが剥離された状態で再度嵌合されるものであるため、閉塞用シートは僅少な厚みであるとはいえ、嵌合状態が緩むという欠点を有していた。
【０００６】
また前記従来技術の発明に係る包装体の実施例においては、周鍔部は周縁に垂下部を有するものであったが、射出成型の場合あるいは真空成型による場合においても、周鍔部に垂下部を有しない形状すなわち水平縁部のみで形成される周鍔部も一般的に使用されるものであるが、水平縁のみの周鍔部は成型時点での加熱により偏肉や変形が生じやすく、従って厚み方向に差異を生じることとなる。また、同じ周鍔部サイズすなわち容器本体上端開口部サイズをもつものであっても、内容量に応じて容量変更する場合は容器の深さを変更することとなり、真空成型による場合は合成樹脂製シート材料の厚みを違えて対応することが通常で、水平縁のみの周鍔部における厚みの差異となり、蓋体嵌合部の一定の間隙設計による嵌合では厚みの差異に対応できず、密封性が得られないという欠点があった。
【０００７】
さらに近年、洗剤や家庭用消耗材製品においては、廃棄物に係る環境問題への対応や、製品のトータルコストの節減という課題から、詰め替え容器タイプの製品が市場化され一般化している。前述のごとき包装容器においても、製品が充填された容器本体のみを詰め替え用製品として販売し、蓋体部分は繰り返し再利用されるという形式が多く用いられていることから、蓋体部分の着脱操作の容易な形態或いは構造が必要とされている。
【０００８】
【発明が解決しようとする課題】
そこで、本発明は、上記問題を解決するためになしたものであって、その目的とするところは、合成樹脂製成型容器のうちフランジ付きカップ状容器に取り付けられる合成樹脂製蓋体において、フランジ部分の厚みの変化、或いはフランジ部の変形に対応して、フランジ付きカップ状容器の密封及び再封を行うことができるとともに、着脱操作の容易な合成樹脂製蓋体を提供する。
【０００９】
【課題を解決するための手段】
上記問題を解決するため、請求項１の発明は、底部と、該底部を囲繞する側壁部で構成されるカップ部と、前記側壁部の上端に連設され前記底部に対し平行に張り出す水平フランジ部とから形成されるカップ状容器本体に取り付けられる合成樹脂製蓋体であって、前記カップ状容器本体の上端に形成された前記水平フランジ部を全周にわたって嵌着すると共に中央部分に開口部を持つリング状枠部と、該リング状枠部の外周部の一辺にヒンジ部を介して連設されると共に中央部分に前記カップ状容器本体のカップ部が挿入され前記水平フランジ部が載置される開口部を持つ嵌合リング状部と、前記リング状枠部の外周部の前記嵌合リング状部に対向する一辺にヒンジ部を介して連設され、前記リング状枠部の前記中央部分の開口部を開閉する蓋板とを一体に成型してなり、前記カップ状容器本体の前記カップ部を前記嵌合リング状部の前記開口部に挿入し、前記カップ状容器本体の前記水平フランジ部を前記リング状枠部の内側に沿わせ、前記カップ状容器本体の前記水平フランジ部を前記リング状枠部内面と前記嵌合リング状部とで前記水平フランジ部の全周にわたって天地方向に挟着して前記カップ状容器本体に着脱できることを特徴とする合成樹脂製蓋体であって、カップ状容器本体の水平フランジ部分の厚みの変化、或いはフランジ部の変形に対応して、蓋体とカップ状容器本体との密着嵌合を可能とするとともに、容器の密封及び再封を行うことができ、さらに蓋体とカップ状容器本体との着脱操作が容易に行える。
【００１０】
請求項２の発明は、底部と、該底部を囲繞する側壁部で構成されるカップ部と、前記側壁部の上端に連設され前記底部に対し平行に張り出す水平フランジ部とから形成されるカップ状容器本体に取り付けられる合成樹脂製蓋体であって、前記カップ状容器本体の上端に形成された前記水平フランジ部を全周にわたって嵌着すると共に中央部分に開口部を持つリング状枠部と、該リング状枠部の外周部の一辺にヒンジ部を介して連設されると共に中央部分に前記カップ状容器本体のカップ部が挿入され前記水平フランジ部が載置される開口部を持つ嵌合リング状部と、前記リング状枠部の外周部の前記嵌合リング状部に対向する一辺にヒンジ部を介して連設され、前記リング状枠部の前記中央部分の開口部を開閉する蓋板とを一体に成型してなり、前記リング状枠部の外周部に全周にわたって垂下するようにリング状枠垂下部が設けられ、該リング状枠垂下部の少なくとも対向する二辺の内面側端部中央近傍には嵌合凸条が突設されると共に、前記嵌合リング状部の外周端部には前記嵌合凸条に係合する嵌合リング状部外端縁を設け、前記カップ状容器本体の前記カップ部を前記嵌合リング状部の前記開口部に挿入し、前記カップ状容器本体の前記水平フランジ部を前記リング状枠部の内側に沿わせ、前記カップ状容器本体の前記水平フランジ部を前記リング状枠部内面と前記嵌合リング状部とで前記水平フランジ部の全周にわたって天地方向に挟着すると共に、前記嵌合凸条に前記嵌合リング状部外端縁が係合して前記カップ状容器本体に着脱できることを特徴とする合成樹脂製蓋体であって、嵌合リング状部の少なくとも対向する二辺が内側方向に向けてやや回転する様に弾性変形することにより、カップ部上端の水平フランジ部厚み方向の差異を吸収し、水平フランジ部の挟み込みによる蓋体と容器本体とのより強固な嵌合状態を得ることができる。さらに、嵌合凸条の係合状態は簡便に解除できるので、蓋体とカップ状容器本体との着脱操作が容易である。
また、請求項３の発明は、請求項１または請求項２のいずれかに記載の合成樹脂製蓋体と、底部と該底部を囲繞する側壁部で構成されるカップ部と前記側壁部の上端に連設され前記底部に対し平行に張り出す水平フランジ部とから形成されるカップ状容器本体とを備え、前記合成樹脂製蓋体が前記カップ状容器本体に取り付けられたことを特徴とする合成樹脂製成形容器であって、このように構成することにより、カップ状容器本体のフランジ部分の厚みの変化、或いはフランジ部の変形に対応して、蓋体とカップ状容器本体との密着嵌合を可能とするとともに、蓋体とカップ状容器本体との着脱操作が容易で、かつ、容器の密封及び再封が可能な合成樹脂製成形容器となる。
【００１１】
【発明の実施の形態】
上記本発明について、図面等を用いて以下に詳述する。
図１は本発明の一実施例の完成状態を示すを示す斜視図。図２は同じく一実施例の蓋体を外した状態を示す斜視図。図３（Ａ）は図１におけるＡ−Ａ´線断面図のうち、容器本体の水平フランジ部の厚みが薄いときの嵌合状態を示す断面図。図３（Ｂ）は同じく図１におけるＡ−Ａ´線断面図のうち、容器本体の水平フランジ部の厚みが厚いときの嵌合状態を示す断面図。図４（Ａ）は同じく一実施例の蓋体の成型展開平面図。図４（Ｂ）は同じく一実施例の蓋体の成型展開縦方向断面図である。
【００１２】
図１に示すように、本発明に係る蓋体Ｐは、容器本体Ｑの上部に取り付けられて構成される。蓋体Ｐと容器本体Ｑはプラスチック材料により形成されており、例えばポリプロピレン（ＰＰ）、高密度ポリエチレン（ＨＤＰＥ）その他の熱可塑性合成樹脂を、射出成型等の成型方法を用いて形成される。
図４（Ａ）の成型展開平面図並びに図４（Ｂ）縦方向断面図に示すように、本発明の一実施例において蓋体Ｐは、中央部分に開口部を持つ略矩形のリング状枠部４と、その一辺の外側中央部に薄肉の蓋板ヒンジ部２０を介して蓋支持板２１、蓋板２２が連設されるとともに、前記一辺に対向する一辺の外側中央部に薄肉のヒンジ部１３を介して中央部分に開口部を持つ略矩形の嵌合リング状部１４が連設されて形成されるものである。
【００１３】
前記リング状枠部４の中央開口部の両側には、内側に隆起部内壁２８を持ち向かい合う略コ字状の隆起部２４がそれぞれ形成され、該略コ字状の隆起部２４のそれぞれ先端間は、正面から見た奥側は前記蓋支持板２１が通過する部分、正面手前側は開閉のための指掛け開放部２５として開放している。また前記リング状枠部４の外周部はリング状枠垂下部４´が設けられており、該リング状枠垂下部４´の四辺の内面側端部中央付近にはそれぞれ嵌合凸条１２が突設されている。
【００１４】
前記蓋板２２は前記略コ字状の隆起部２４で囲まれた部分に嵌まり込む形状で形成され、その先端部中央に指掛け部２３を突設するとともに、前記蓋板２２の外周部には嵌合垂下部２６を設け、前記蓋板２２の内面中央部には前記蓋体Ｐの中央開口部に内接嵌合する嵌合周壁２７が突設されている。
前記嵌合リング状部１４は内側に嵌合リング状部内壁１６および外周端部に嵌合リング状部外端縁１５を設けてなる。
【００１５】
図２は本発明の一実施例の蓋体を外した状態を示す斜視図で、本発明に係る容器本体Ｑは、成型されたカップ部２の側壁の上端側に水平フランジ部１を設けてなるもので、カップ部２は通常、底部と側壁部を有し上面が開放した形状で、平面形状は矩形又は円形や楕円形等に形成されるが、特に限定されるものではない。水平フランジ部１は通常、容器本体Ｑの上面を密閉するシート、例えば紙又は熱可塑性樹脂フィルム等の単層又は複層からなるシートで、接着或いは熱溶着されて密閉される。図２および図３（Ａ）および（Ｂ）に示すように、接着或いは熱溶着による密閉精度向上と、ピール性（開封時の引き剥がし易さ）の向上のため、水平フランジ部１の上面に細幅の突起部分を周回させてシールリング部３を設けることもできる。
【００１６】
図３（Ａ）は図１におけるＡ−Ａ´線断面図のうち、容器本体Ｑの水平フランジ部１の厚みが薄いときの嵌合状態を示す断面図で、図２で示す蓋体Ｐを外した状態から、容器本体Ｑを底部から嵌合リング状部１４に挿入した後、容器本体Ｑの水平フランジ部１に蓋体Ｐのリング状枠部４を沿わせて載置し、前記嵌合リング状部１４を前記リング状枠部４の底部から、前記水平フランジ部１を挟み込みながら嵌入させ、リング状枠垂下部４´の四辺の内面側端部中央付近に突設された嵌合凸条１２に、前記嵌合リング状部１４の外周端部に設けられた嵌合リング状部外端縁１５が係合されることにより、蓋体Ｐと容器本体Ｑは強固に嵌合されることとなり、図１の斜視図に示すように完成状態となる。
【００１７】
図３（Ｂ）は図１におけるＡ−Ａ´線断面図のうち、容器本体Ｑの水平フランジ部１の厚みが厚いときの嵌合状態を示す断面図で、前項と同様にに嵌合操作を行った場合、図に示すように前記嵌合リング状部１４の四辺は内側下方に向けてやや回転する様に弾性変形して、前記容器本体Ｑの水平フランジ部１を挟み込みながら前記嵌合凸条１２に前記嵌合リング状外端縁１５が係合されることとなる。尚、前記容器本体Ｑの水平フランジ部１を、容器本体Ｑの上面を密閉するシート、例えば紙又は熱可塑性樹脂フィルム等の単層又は複層からなるシートで、接着或いは熱溶着して密閉した場合も、僅かでは有るが水平フランジ部１の厚みが厚くなるので、図３（Ｂ）に示した嵌合状態と略同様になるものである。
【００１８】
従来の技術の項でも述べたように、水平フランジ部１の厚みは成型される熱可塑性樹脂のシート厚によって変化したり、容器本体Ｑの成型深さによりシート厚を変化させて設計する為、例えば同じフランジ部サイズすなわち容器開口部サイズで、容量違いの製品用容器を成型する場合、フランジ部厚みも変化するものである。また、容器本体Ｑの熱可塑性合成樹脂による射出成型において、成型時点での加熱により水平フランジ部１に偏肉や変形が生じた場合にも、厚み方向に差異を生じることとなるが、前述の如く本発明によれば、嵌合リング状部１４の四辺が内側下方に向けてやや回転する様に弾性変形することにより、厚み方向の差異を吸収して水平フランジ部１の挟み込みによる蓋体Ｐと容器本体Ｑとの強固な嵌合状態を得ることができる。
【００１９】
本発明の合成樹脂製蓋体を使用した容器の製造にあたっては、前述のごとく容器本体Ｑに内容物製品を充填或いは収納し、水平フランジ部１を、容器本体Ｑの上面を密閉するシート、例えば紙又は熱可塑性樹脂フィルム等の単層又は複層からなるシートで、接着或いは熱溶着して密閉した後、蓋体Ｐを容器本体Ｑに嵌合させることにより完成し、通常これに熱収縮包装等を施して流通される。使用にあたって、購入した消費者は、熱収縮包装等を取り去り、蓋体Ｐの四辺のリング状枠部垂下部４´をやや外側に向かって拡開する操作を行って、前記リング状枠垂下部４´の内面側端部の嵌合凸条１２に係合している嵌合リング状部外端縁１５の係合状態を解除して容器本体を取り出し、容器本体Ｑの水平フランジ部１を密閉しているシートを引き剥がした後、再び蓋体Ｐと容器本体Ｑを嵌合状態に戻して、以後蓋板２２の開閉による継続的使用に供する。継続使用時の内容物取り出しに関しては、指掛け部２３をつまみ、蓋板２２を引き上げれば中央開口部より、内容物の取り出しが行える。使用後は蓋板２２を押し下げれば、蓋板２２の外側端部に設けた嵌合垂下部２６が隆起部内壁２８に沿いながら閉鎖されると共に、蓋板２２の内面の中央開口部対応部分に突設された嵌合周壁２７が中央開口部周縁端部に設けられた開口縁立起部３０に沿いながら閉鎖され、高い密閉性が保持されるとともに閉止位置が維持される。また蓋板２２の内面に突設された嵌合周壁２７の、上辺中央部分には外向きに蓋係止突起３１が突設され、閉鎖時には開口縁立起部３０の正面向き手前側中央部分に穿設された蓋係止切欠部３２に係止されるので、密閉は確実なものとなる。
【００２０】
また近年、家庭用消耗材製品においては、廃棄物に係る環境問題への対応や、製品のトータルコストの節減という課題から、詰め替え容器タイプの製品が市場化され一般化しているので、本発明の実施においても、前記容器本体Ｑに密閉シートによる密閉を行った状態を詰め替え製品として流通させ、前もって購入して使用した蓋体Ｐを繰り返し使用するという形式が可能である。さらに前述の如く例えば容量違いの詰め替え製品を用いても、本発明の合成樹脂製蓋体では、フランジの厚みに対応して容器本体を取り付けることができる。しかも本発明で使用される容器本体Ｑは、特別な形態や加工を必要としない一般的なフランジ付きトレー或いはカップ形式であるので、詰め替え製品の生産効率を損なうことが無い。
【００２１】
【発明の効果】
以上のように本発明の合成樹脂製蓋体は、蓋体に設けたリング状枠部と嵌合リング状部との嵌合によって容器本体の水平フランジ部を挟み込むという構成において、嵌合リング状部の四辺が弾性変形することにより、容器本体の水平フランジ部の厚みが変化したり、変形することに対応して、蓋体と容器本体の嵌合合体を行うことが出来るものであり、フランジ部を全周嵌合するという従来技術におけるフランジ部厚みの変化・変形による嵌合部分の緩み発生という欠点を解消するものであり、フランジ部シールの除去による僅かな厚みの変化にも対応できる点で優れている。
【００２２】
フランジ部の厚みが変化しても良好な嵌合性が得られるため、同一商品において容量別の対応製品が多種類となって、容器本体の種類も多種類となっても、フランジ部すなわち上部開口部分が一定であれば、蓋体は共用できることとなり、大量生産による生産コスト減少の効果が得られ、しかも詰め替え製品の場合は、容量別に多種となっても、蓋体は繰り返し使用できるので、消費者の利便性も高く、廃棄物を減少することが出来る点で環境的にも効果が期待できる。
【００２３】
また、フランジ部の挟み込みによる嵌合操作は、嵌合凸条と嵌合リング状部外端縁の係合により簡便に行えるので、従来技術におけるフランジ部全体の蓋体への嵌合の難しさを解消するものであり、開封操作時或いは詰め替え容器装着操作時の操作容易性に効果がある。
【図面の簡単な説明】
【図１】本発明の一実施例の完成状態を示すを示す斜視図。
【図２】同じく一実施例の蓋体を外した状態を示す斜視図。
【図３】（Ａ）図１におけるＡ−Ａ´線断面図のうち、容器本体の水平フランジ部の厚みが薄いときの嵌合状態を示す断面図。
（Ｂ）同じく図１におけるＡ−Ａ´線断面図のうち、容器本体の水平フランジ部の厚みが厚いときの嵌合状態を示す断面図。
【図４】（Ａ）同じく一実施例の蓋体の成型展開平面図
（Ｂ）同じく一実施例の蓋体の成型展開縦方向断面図。
【符号の説明】
Ｐ蓋体
Ｑ容器本体
１水平フランジ部
２カップ部
３シールリング部
４リング状枠部
４´ リング状枠垂下部
１２嵌合凸条
１３ヒンジ部
１４嵌合リング状部
１５嵌合リング状部外端縁
１６嵌合リング状部内壁
２０蓋板ヒンジ部
２１蓋支持板
２２蓋板
２３指掛け部
２４隆起部
２５指掛け開放部
２６嵌合垂下部
２７嵌合周壁
２８隆起部内壁
２９開口縁
３０開口縁立起部
３１蓋係止突起
３２蓋係止切欠部[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a synthetic resin lid attached to a flanged cup-shaped container among synthetic resin molded containers for sealing and storing wet sheets or other stored items that are frequently used for home use. In particular, the present invention relates to a synthetic resin lid that can be attached corresponding to the thickness of the flange portion.
[0002]
[Prior art]
Conventionally, a cup-shaped container whose upper surface is opened by injection molding (injection molding) or vacuum molding (vacuum molding) among synthetic resin molded containers is called a so-called flange at the upper end of the open portion. A narrow horizontal edge is provided as a seal part for maintaining the shape of the open part or for sealing, and a synthetic resin molded lid provided with a projection that fits into the flange part is fitted. Such a container is commonly used as a well-known technique. Also, as a packaging container for products wetted with liquid such as a wet tissue, it is common to have a drawer opening at the top of the bottle-shaped molded container so that the wet tissue can be pulled out one by one. is there. However, depending on the contents, a container with a large outlet is required. For example, for cut cotton containing alcohol (cosmetic cut cotton moistened with alcohol), the cup-shaped container main body with the open upper surface is connected to the main body flange. A package body is disclosed in which an integrally formed lid body including a ring-shaped frame portion to be worn and a lid portion that is connected to the ring-shaped frame portion by a hinge portion so as to be freely opened and closed is engaged. (For example, refer to Patent Document 1).
[0003]
[Patent Document 1]
JP 2002-308333 A [0004]
The packaging body according to the invention described in the above-mentioned document includes a cup-shaped container body formed by molding a synthetic resin such as polypropylene or polyethylene in which a large number of alcohol-containing cut cotton is laminated and accommodated as described above, A single-layer or multiple-layer closing sheet such as paper or a synthetic resin material to be adhered and sealed to the peripheral flange formed at the upper end of the container main body, and a polypropylene attached to be fitted to the peripheral flange. And a lid body in which a lid portion and a ring-shaped frame portion are integrally molded using a synthetic resin such as polyethylene, and in the distribution stage, the container body is adhesively sealed with the closing sheet, and The ring-shaped frame portion is externally fitted and the lid portion is also closed. In use, the lid body is removed from the container body, that is, the outer fitting of the ring-shaped frame portion is released, the sheet for closing is peeled off, and then the ring-shaped frame portion is re-fitted, thereby the lid body is removed from the container body. It is attached to the main body and used for continuous use by opening and closing the lid.
[0005]
In the embodiment of the packaging body according to the above prior art invention, the peripheral flange portion formed at the upper end of the container main body is formed with a slight drooping portion at the periphery toward the lower side and integrally formed with the lid portion. On the inner side of the outer wall portion of the ring-shaped frame portion, a protrusion is formed partially or over the entire circumference, and is engaged with the hanging portion of the peripheral flange portion. The sheet is fitted and distributed in a state where the sheet is bonded and sealed, and the sheet for closure is re-fitted in a state in which the sheet is peeled off when used, so the sheet for closing is said to have a small thickness. , Had the disadvantage that the fitting state loosened.
[0006]
Further, in the embodiment of the packaging body according to the above-mentioned prior art, the peripheral flange portion has a hanging portion on the peripheral edge. However, in the case of injection molding or vacuum molding, the peripheral portion is also suspended on the circumferential portion. The shape of the peripheral edge formed only by the horizontal edge is not generally used, but the peripheral edge only of the horizontal edge is likely to be uneven and deformed by heating at the time of molding, Therefore, a difference occurs in the thickness direction. In addition, even if it has the same peripheral part size, that is, the container body upper end opening part size, if the capacity is changed according to the inner capacity, the depth of the container will be changed. It is normal to deal with different thicknesses of sheet material, resulting in a difference in thickness at the peripheral edge only at the horizontal edge, and fitting with a fixed gap design of the lid fitting part can not cope with the difference in thickness and sealing There was a drawback that the property could not be obtained.
[0007]
In recent years, as for detergents and household consumable products, refillable container type products have been marketed and generalized due to the problems of dealing with environmental problems related to waste and reducing the total cost of the products. Even in the case of the packaging container as described above, only the container body filled with the product is sold as a refill product, and the lid part is repeatedly reused. An easy form or structure is required.
[0008]
[Problems to be solved by the invention]
Then, this invention was made in order to solve the said problem, The place made into the objective is in the synthetic resin lid body attached to a cup-shaped container with a flange among synthetic resin molding containers, Provided is a synthetic resin lid body that can seal and reseal a flanged cup-shaped container and can be easily attached and detached in response to a change in the thickness of the flange portion or deformation of the flange portion.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention of claim 1 is directed to a bottom part, a cup part composed of a side wall part surrounding the bottom part, and a horizontal part extending in parallel to the bottom part and connected to the upper end of the side wall part. A synthetic resin lid attached to a cup-shaped container body formed from a flange portion, and fitted with the horizontal flange portion formed at the upper end of the cup-shaped container body over the entire circumference and opened in a central portion A ring-shaped frame portion having a central portion, a cup portion of the cup-shaped container body is inserted in the central portion of the ring-shaped frame portion, and a horizontal flange portion is mounted on one side of the outer peripheral portion of the ring-shaped frame portion. A fitting ring-shaped part having an opening to be placed, and a side of the outer peripheral part of the ring-shaped frame part facing the fitting ring-shaped part via a hinge part, and the ring-shaped frame part Open and close the central opening A cup and a cup, and the cup portion of the cup-shaped container body is inserted into the opening of the fitting ring-shaped portion, and the horizontal flange portion of the cup-shaped container body is inserted into the ring-shaped frame portion. The cup-shaped container main body is clamped in the vertical direction over the entire circumference of the horizontal flange portion between the inner surface of the ring-shaped frame portion and the fitting ring-shaped portion. A synthetic resin lid body that can be attached to and detached from the container body, wherein the lid body and the cup-shaped container body correspond to changes in the thickness of the horizontal flange portion of the cup-shaped container body or deformation of the flange portion. The close fitting can be performed, the container can be sealed and resealed, and the lid body and the cup-shaped container body can be easily attached and detached.
[0010]
The invention of claim 2 is formed of a bottom portion, a cup portion composed of a side wall portion surrounding the bottom portion, and a horizontal flange portion that is provided continuously with the upper end of the side wall portion and projects parallel to the bottom portion. A synthetic resin lid attached to the cup-shaped container body, the ring-shaped frame part having the horizontal flange portion formed at the upper end of the cup-shaped container body fitted over the entire circumference and having an opening in the central portion And an opening that is connected to one side of the outer peripheral portion of the ring-shaped frame portion via a hinge portion and into which the cup portion of the cup-shaped container body is inserted and the horizontal flange portion is placed at the center portion. A fitting ring-shaped portion and a side of the outer peripheral portion of the ring-shaped frame portion facing the fitting ring-shaped portion are connected via a hinge portion, and the opening of the central portion of the ring-shaped frame portion is opened and closed. Molded with the lid plate A ring-shaped frame hanging portion is provided on the outer peripheral portion of the ring-shaped frame portion so as to hang over the entire circumference. And a fitting ring-shaped portion outer edge that engages with the fitting convex strip is provided at the outer peripheral end of the fitting ring-shaped portion, and the cup portion of the cup-shaped container body Inserted into the opening of the fitting ring-shaped portion, the horizontal flange portion of the cup-shaped container body is along the inside of the ring-shaped frame portion, and the horizontal flange portion of the cup-shaped container body is the ring-shaped The frame inner surface and the fitting ring-shaped portion are clamped in the vertical direction over the entire circumference of the horizontal flange portion, and the fitting ring-shaped outer edge engages with the fitting protrusion and the cup. Synthetic resin lid characterized in that it can be attached to and detached from the container body And, by elastically deforming so that at least two opposite sides of the fitting ring-shaped part rotate slightly inward, the difference in the thickness direction of the horizontal flange part at the upper end of the cup part is absorbed, and the horizontal flange part It is possible to obtain a stronger fitting state between the lid body and the container body due to the pinching. Furthermore, since the engagement state of the fitting ridges can be easily released, the attachment / detachment operation between the lid and the cup-shaped container main body is easy.
Further, the invention of claim 3 is a synthetic resin lid according to claim 1, a cup part composed of a bottom part and a side wall part surrounding the bottom part, and an upper end of the side wall part. And a cup-shaped container body formed from a horizontal flange extending in parallel to the bottom, and the synthetic resin lid is attached to the cup-shaped container body. This is a resin-made container, and with this configuration, the lid and the cup-shaped container body are closely fitted in response to changes in the thickness of the flange portion of the cup-shaped container body or deformation of the flange portion. In addition, it is easy to attach and detach the lid and the cup-shaped container body, and the synthetic resin molded container can be sealed and resealed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail below with reference to the drawings.
FIG. 1 is a perspective view showing a completed state of an embodiment of the present invention. FIG. 2 is a perspective view showing a state in which the cover of the embodiment is removed. FIG. 3A is a cross-sectional view showing a fitting state when the horizontal flange portion of the container body is thin in the cross-sectional view along the line AA ′ in FIG. 1. FIG. 3B is a cross-sectional view showing a fitting state when the horizontal flange portion of the container body is thick in the cross-sectional view along the line AA ′ in FIG. FIG. 4A is a plan view of a molding development of a lid according to one embodiment. FIG. 4B is a vertical sectional view of the lid body in the same embodiment as in the molding development.
[0012]
As shown in FIG. 1, the lid P according to the present invention is configured to be attached to the upper part of the container main body Q. The lid P and the container body Q are formed of a plastic material, and are formed of, for example, polypropylene (PP), high density polyethylene (HDPE), or other thermoplastic synthetic resin using a molding method such as injection molding.
As shown in the molding development plan view of FIG. 4 (A) and the longitudinal sectional view of FIG. 4 (B), in one embodiment of the present invention, the lid P is a substantially rectangular ring-shaped frame having an opening at the center. A lid support plate 21 and a lid plate 22 are connected to the portion 4 and an outer central portion of one side via a thin lid plate hinge portion 20, and a thin hinge is formed at an outer central portion of one side facing the one side. A substantially rectangular fitting ring-shaped portion 14 having an opening at the center portion is formed continuously through the portion 13.
[0013]
On both sides of the central opening of the ring-shaped frame portion 4, there are formed substantially U-shaped protuberances 24 which are opposed to each other and have an inner wall 28 of the protuberance, and between the tips of the substantially U-shaped protuberances 24. The back side seen from the front is open as the part through which the lid support plate 21 passes, and the front front side is opened as a finger hook opening part 25 for opening and closing. Further, a ring-shaped frame hanging portion 4 ′ is provided on the outer peripheral portion of the ring-shaped frame portion 4, and fitting ridges 12 are respectively provided in the vicinity of the center on the inner side of the four sides of the ring-shaped frame hanging portion 4 ′. Projected.
[0014]
The lid plate 22 is formed in a shape that fits into a portion surrounded by the substantially U-shaped raised portion 24, and has a finger hook portion 23 projecting from the center of the tip thereof, and on the outer peripheral portion of the lid plate 22. Is provided with a fitting hanging portion 26, and a fitting peripheral wall 27 protruding from the center opening of the lid P is provided at the center of the inner surface of the lid plate 22.
The fitting ring-shaped portion 14 is provided with a fitting ring-shaped portion inner wall 16 on the inner side and a fitting ring-shaped portion outer end edge 15 on the outer peripheral end.
[0015]
FIG. 2 is a perspective view showing a state in which a lid according to an embodiment of the present invention is removed. A container body Q according to the present invention is provided with a horizontal flange portion 1 on the upper end side of a side wall of a molded cup portion 2. Therefore, the cup portion 2 is usually formed in a shape having a bottom portion and a side wall portion and an open top surface, and the planar shape is formed in a rectangular shape, a circular shape, an oval shape, or the like, but is not particularly limited. The horizontal flange portion 1 is usually a sheet that seals the upper surface of the container body Q, for example, a sheet composed of a single layer or multiple layers such as paper or a thermoplastic resin film, and is sealed by adhesion or heat welding. As shown in FIGS. 2 and 3 (A) and 3 (B), on the upper surface of the horizontal flange portion 1 in order to improve the sealing accuracy by adhesion or heat welding and to improve the peelability (ease of peeling at the time of opening). It is also possible to provide the seal ring portion 3 by turning around the narrow protrusion portion.
[0016]
3A is a cross-sectional view showing a fitting state when the horizontal flange portion 1 of the container body Q is thin in the cross-sectional view taken along the line AA ′ in FIG. 1, and the lid P shown in FIG. After the container main body Q is inserted into the fitting ring-shaped part 14 from the bottom from the removed state, the ring-shaped frame part 4 of the lid P is placed on the horizontal flange part 1 of the container main body Q, and the fitting is performed. A mating ring-shaped portion 14 is fitted from the bottom of the ring-shaped frame portion 4 while sandwiching the horizontal flange portion 1, and is fitted in a protruding manner in the vicinity of the center on the inner side of the four sides of the ring-shaped frame hanging portion 4 '. The lid P and the container main body Q are firmly fitted by engaging the convex ring 12 with the fitting ring-shaped part outer edge 15 provided at the outer peripheral end of the fitting ring-shaped part 14. As shown in the perspective view of FIG.
[0017]
3B is a cross-sectional view showing a fitting state when the horizontal flange portion 1 of the container main body Q is thick in the cross-sectional view taken along the line AA ′ in FIG. As shown in the figure, the four sides of the fitting ring-shaped portion 14 are elastically deformed so as to rotate slightly inward and downward, and the fitting is performed while sandwiching the horizontal flange portion 1 of the container body Q. The fitting ring-shaped outer end edge 15 is engaged with the ridge 12. The horizontal flange portion 1 of the container main body Q is sealed with a sheet that seals the upper surface of the container main body Q, for example, a sheet composed of a single layer or multiple layers such as paper or a thermoplastic resin film, and is bonded or thermally welded. In this case, the thickness of the horizontal flange portion 1 is increased although it is slight, so that it is substantially the same as the fitting state shown in FIG.
[0018]
As described in the section of the prior art, the thickness of the horizontal flange portion 1 varies depending on the sheet thickness of the thermoplastic resin to be molded, or the sheet thickness is varied depending on the molding depth of the container main body Q. For example, when a product container having different capacities with the same flange portion size, that is, the container opening size is molded, the thickness of the flange portion also changes. In addition, in the injection molding of the container body Q with the thermoplastic synthetic resin, even if uneven thickness or deformation occurs in the horizontal flange portion 1 due to heating at the time of molding, there will be a difference in the thickness direction. As described above, according to the present invention, the four sides of the fitting ring-shaped portion 14 are elastically deformed so as to rotate slightly inward and downward, so that the difference in the thickness direction is absorbed, and the lid P due to the sandwiching of the horizontal flange portion 1 A strong fitting state between the container body Q and the container body Q can be obtained.
[0019]
In manufacturing a container using the synthetic resin lid of the present invention, as described above, the container body Q is filled or stored with the contents product, and the horizontal flange portion 1 is a sheet that seals the upper surface of the container body Q, for example, A sheet consisting of a single layer or multiple layers such as paper or a thermoplastic resin film, which is sealed by adhesion or heat welding, and then completed by fitting the lid P to the container body Q. Etc. are distributed. In use, the purchased consumer removes the heat shrink wrapping, etc., performs the operation of expanding the ring-shaped frame portion hanging portion 4 ′ on the four sides of the lid P slightly outward, and the ring-shaped frame hanging portion. The engagement state of the outer end edge 15 of the fitting ring-shaped portion engaged with the fitting protrusion 12 on the inner surface side end of 4 ′ is released, the container body is taken out, and the horizontal flange portion 1 of the container body Q is removed. After the sealed sheet is peeled off, the lid P and the container main body Q are returned to the fitted state again, and thereafter used for continuous use by opening and closing the lid plate 22. With regard to taking out the contents at the time of continuous use, the contents can be taken out from the central opening by picking up the finger hook 23 and pulling up the cover plate 22. When the lid plate 22 is pushed down after use, the fitting hanging portion 26 provided at the outer end portion of the lid plate 22 is closed along the raised inner wall 28, and the inner opening corresponding portion of the inner surface of the lid plate 22 corresponds to the central opening portion. The fitting peripheral wall 27 projecting from is closed along the opening edge rising portion 30 provided at the peripheral edge of the central opening, and high sealing performance is maintained and the closed position is maintained. Further, a lid locking projection 31 projects outwardly from the center portion of the upper side of the fitting peripheral wall 27 projecting from the inner surface of the lid plate 22, and when closed, the front middle portion of the opening edge upright portion 30 facing forward. Since it is latched by the lid latching cutout portion 32 formed in the inner wall, sealing is ensured.
[0020]
In recent years, in the field of consumable products for household use, refill container type products have been marketed and generalized due to the problems of dealing with environmental problems related to waste and reducing the total cost of the products. In the implementation, a form in which the state of sealing with the sealing sheet is distributed to the container body Q as a refill product, and the lid P that has been purchased and used in advance can be used repeatedly. Further, as described above, for example, even if refill products with different capacities are used, the container body can be attached in accordance with the thickness of the flange in the synthetic resin lid body of the present invention. Moreover, since the container body Q used in the present invention is a general flanged tray or cup type that does not require any special form or processing, it does not impair the production efficiency of the refill product.
[0021]
【The invention's effect】
As described above, the lid made of the synthetic resin of the present invention has a fitting ring shape in a configuration in which the horizontal flange portion of the container body is sandwiched by fitting between the ring-shaped frame portion provided on the lid body and the fitting ring-shaped portion. When the four sides of the part are elastically deformed, the thickness of the horizontal flange part of the container body changes or the cover body and the container body can be fitted and combined in response to the deformation. This eliminates the disadvantage of loosening of the mating part due to the change and deformation of the flange thickness in the conventional technology that fits the entire circumference of the part, and can cope with a slight thickness change due to removal of the flange seal Is excellent.
[0022]
Even if the thickness of the flange changes, good fitability can be obtained, so there are many types of compatible products by volume in the same product, and there are many types of container main bodies. If the opening part is constant, the lid can be shared, and the effect of reducing production costs due to mass production can be obtained.In addition, in the case of refill products, the lid can be used repeatedly, even if it varies by capacity, It is highly convenient for consumers and can be expected to be environmentally effective in reducing waste.
[0023]
In addition, the fitting operation by sandwiching the flange portion can be easily performed by engaging the fitting ridge and the outer end edge of the fitting ring-like portion, so that it is difficult to fit the whole flange portion to the lid in the prior art. This is effective in ease of operation during opening operation or refilling container mounting operation.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a completed state of an embodiment of the present invention.
FIG. 2 is a perspective view showing a state where a cover body according to one embodiment is removed.
3A is a cross-sectional view showing a fitting state when the horizontal flange portion of the container body is thin in the cross-sectional view taken along the line AA ′ in FIG.
(B) Similarly sectional drawing which shows a fitting state when the thickness of the horizontal flange part of a container main body is thick among the sectional views on the AA 'line in FIG.
FIG. 4A is a plan view of a molding development of a lid body according to one embodiment, and FIG. 4B is a longitudinal sectional view of a molding development of a lid body according to one embodiment.
[Explanation of symbols]
P lid body Q container body 1 horizontal flange part 2 cup part 3 seal ring part 4 ring-like frame part 4 'ring-like frame hanging part 12 fitting ridge 13 hinge part 14 fitting ring-like part 15 outside fitting ring-like part End edge 16 Fitting ring-shaped portion inner wall 20 Lid plate hinge portion 21 Lid support plate 22 Lid plate 23 Finger hanging portion 24 Raised portion 25 Finger hanging open portion 26 Fitting hanging portion 27 Fitting peripheral wall 28 Raised portion inner wall 29 Open edge 30 Open edge Standing portion 31 Lid locking protrusion 32 Lid locking notch

Claims

It is attached to a cup-shaped container main body formed by a bottom, a cup part constituted by a side wall part surrounding the bottom part, and a horizontal flange part which is connected to the upper end of the side wall part and extends parallel to the bottom part. A ring-shaped frame portion, which is a synthetic resin lid body, fitting the horizontal flange portion formed at the upper end of the cup-shaped container body over the entire circumference and having an opening in the central portion, and the ring-shaped frame portion A fitting ring-like part having an opening in which the cup part of the cup-shaped container body is inserted in the central part and the horizontal flange part is placed, and is continuously provided on one side of the outer peripheral part of A lid plate that is continuously provided on one side of the outer peripheral portion of the ring-shaped frame portion facing the fitting ring-shaped portion via a hinge portion and that opens and closes the opening of the central portion of the ring-shaped frame portion. molded it in, the cup Joyo Inserting the cup portion of the body into the opening portion of the engaging ring-shaped portion, said horizontal flange portion of the cup-shaped container body and along the inner side of the ring-shaped frame portion, the horizontal of the cup-shaped container body A synthetic resin lid characterized in that the flange portion can be attached to and detached from the cup-shaped container body by sandwiching the flange portion between the inner surface of the ring-shaped frame portion and the fitting ring-shaped portion over the entire circumference of the horizontal flange portion. body.

It is attached to a cup-shaped container main body formed by a bottom, a cup part constituted by a side wall part surrounding the bottom part, and a horizontal flange part which is connected to the upper end of the side wall part and extends parallel to the bottom part. A ring-shaped frame portion, which is a synthetic resin lid body, fitting the horizontal flange portion formed at the upper end of the cup-shaped container body over the entire circumference and having an opening in the central portion, and the ring-shaped frame portion A fitting ring-like part having an opening in which the cup part of the cup-shaped container body is inserted in the central part and the horizontal flange part is placed, and is continuously provided on one side of the outer peripheral part of A lid plate that is continuously provided on one side of the outer peripheral portion of the ring-shaped frame portion facing the fitting ring-shaped portion via a hinge portion and that opens and closes the opening of the central portion of the ring-shaped frame portion. molded it in, the ring-shaped frame A ring-shaped frame hanging part is provided on the outer peripheral part of the ring-shaped frame so as to hang over the entire circumference, and a fitting protrusion protrudes in the vicinity of the center of the inner side end of at least two opposite sides of the ring-shaped frame hanging part. In addition, an outer peripheral edge of the fitting ring-shaped portion is provided with a fitting ring-shaped portion outer end edge that engages with the fitting protrusion, and the cup portion of the cup-shaped container body is connected to the fitting ring-shaped portion. The horizontal flange portion of the cup-shaped container main body along the inner side of the ring-shaped frame portion, and the horizontal flange portion of the cup-shaped container main body is fitted to the inner surface of the ring-shaped frame portion. The fitting ring-like portion is clamped in the vertical direction over the entire circumference of the horizontal flange portion, and the fitting ring-like portion outer edge engages with the fitting protrusion, so that it can be attached to and detached from the cup-shaped container body. synthetic resin lid you wherein a.

The synthetic resin lid according to claim 1, a cup part composed of a bottom part and a side wall part surrounding the bottom part, and an upper end of the side wall part, which are connected in parallel to the bottom part. A synthetic resin molded container comprising: a cup-shaped container body formed from a horizontal flange portion extending over the cup-shaped container body, wherein the synthetic resin lid is attached to the cup-shaped container body.