JP2004217233A - Paper container - Google Patents

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Publication number
JP2004217233A
JP2004217233A JP2003005013A JP2003005013A JP2004217233A JP 2004217233 A JP2004217233 A JP 2004217233A JP 2003005013 A JP2003005013 A JP 2003005013A JP 2003005013 A JP2003005013 A JP 2003005013A JP 2004217233 A JP2004217233 A JP 2004217233A
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JP
Japan
Prior art keywords
wall
container
bottom wall
lid
locking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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JP2003005013A
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Japanese (ja)
Inventor
Kiyomi Toge
清美 峠
Kazuhisa Futatsuya
和久 二ッ谷
Nariyuki Ishibashi
成幸 石橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UEDA INSATSU SHIKO KK
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UEDA INSATSU SHIKO KK
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Priority to JP2003005013A priority Critical patent/JP2004217233A/en
Publication of JP2004217233A publication Critical patent/JP2004217233A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To obtain a paper container which brings about a strong force for locking a lid body to a container body, disables the opening of a lid as long as a tamper-resistant band part is not damaged, and has an excellent tamper-resistant function. <P>SOLUTION: A skirt wall 8 of the lid body 3 is composed of a barrel wall fitting part 11 and a post-worked locking wall 12 which is formed at the lower end of the barrel wall fitting part; and the locking wall 12 serves as a locking part 13 to be locked, by post-working, to an outer peripheral part of a bottom part of the container body after the skirt wall is externally fitted to a barrel wall of the container body already filled with contents. The outer peripheral part of the bottom part of the container body can also be directly locked to the undersurface of a curled bottom-wall supporting part of a two-piece container body, and can also be locked by flatly smashing the inside of the bottom-wall supporting part or the curled bottom-wall supporting part. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、容器本体と蓋体とからなる紙製容器、特に流通段階で不正開蓋による改ざんを防止した改ざん防止機能を備えた蓋体を有する紙製容器に関する。
【0002】
【従来の技術】
従来、例えば小ブロック毎に包装した扇形チーズピース等を収納包装する浅底円筒状の紙製容器は、浅底の円筒状容器本体とそれに外嵌合するスカート壁を有する蓋体からなり、円筒状容器本体の胴部に蓋体のスカート壁を嵌合して被せるだけで充填されている内容物を包装するものであり、蓋体の開蓋を阻止するための容器本体との係止手段(封止手段)は有していない。そのため、流通段階で自由に開蓋できないようにするために、蓋体と容器本体を複数の接着テープで固定しているのが実情である。しかしながら、接着テープは剥して再度接着させることが可能な場合もあり、改ざん防止機能としては不充分である。
【0003】
また、カップ状の紙製容器等の場合、従来、蓋体のスカート壁の端部に内側に屈曲して係止部を形成し、該蓋体を容器本体に嵌合することにより、容器本体の開口端部に形成されたフランジ又はカール部に前記係止部が係止することによって、蓋体を破損させない限り開蓋できないように蓋体と容器を係止させている(例えば、特開平4−239441号公報、実開昭56−12207号公報)。しかしながら、その場合、容器本体のフランジ又はカール部を蓋体の係止部が弾性変形により乗り越えてその下方に係合させるので強係止が得にくく、改ざん防止機能としては未だ満足するものではなかった。
【0004】
【特許文献1】
特開平4−239441号公報
【特許文献2】
実開昭56−12207号公報
【0005】
【発明が解決しようとする課題】
上記問題点を解決するために、本発明者らは、蓋体のスカート壁が胴部壁嵌合部と該胴部壁嵌合部の下端部に形成された後加工係止壁とからなり、容器本体が浅底容器の場合、前記後加工壁を後加工により内巻状にカール加工して容器本体の底壁の外周平坦部に係止させることにより、容器本体と蓋体が強固に係止して一体化され、改ざん防止バンドを破断しない限り開蓋することはできない紙製容器を先に提案した(特願2002−143078号)。
本発明は、先に提案した上記発明をさらに改良したものであり、前記提案した発明が容器本体の底壁の平坦部に蓋体のカール部を係止させるものであったが、容器本体の底部外周部にカール部や環状凸溝等があって必ずしも平坦部でなくても蓋体を強固に係止して一体化でき、それにより通常の2ピースからなる容器本体にも適用でき、改ざん防止機能に優れ、且つデザイン的にも優れた形態を採用できる紙製容器を提供することを目的とする。
【0006】
【課題を解決するための手段】
上記目的を達成する本発明の紙製容器は、胴壁と底壁を有する容器本体と、該容器本体に外嵌合するスカート壁と天壁を有する蓋体とからなる紙製容器であって、前記蓋体のスカート壁は、胴部壁嵌合部と該胴部壁嵌合部の下端部に形成された後加工係止壁とからなり、該後加工係止壁が、前記蓋体のスカート壁を内容物充填済みの容器本体の胴壁に外嵌合して後加工により容器本体の底部外周部に係止する係止部となっていることを特徴とするものである。前記紙製容器は、浅底容器、深底容器、胴部形状が筒状、カップ状、そして断面形状が円筒状、あるいは楕円状、四角状等、その形状は特に限定されない。
【0007】
前記容器本体は、下端が内側にカールして底壁受け部を形成してなる筒状の胴部壁と、前記底壁受け部に支持された底壁の2ピースからなり、前記係止部が前記カール状の底壁受け部の下面に係止してなるように構成することができる。また、他の態様として前記容器本体は、下端が内側にカールして底壁受け部を形成してなる筒状の胴部壁と、前記底壁受け部に支持された底壁の2ピースからなり、前記係止部が前記カール状の前記底壁受け部の容器半径方向内側面と底壁下面とに係合するように係止してなるように構成してもよい。さらに、前記容器本体は、下端が内側にカールして底壁受け部を形成してなる筒状の胴部壁と、前記底壁受け部に支持された底壁の2ピースからなり、前記底壁受け部を平坦に潰して内側に直角に屈曲させ、その平坦上面で底壁を支持すると共に、平坦下面に前記蓋体の係止部を係止させてなるように構成することもできる。さらにまた、前記容器本体は、一枚のブランクを絞り成形により形成された1ピースからなり、その底部外周部に環状脚部を有し、前記底壁受け部が、前記環状脚部を超えてカール部が底壁平坦部及び環状脚部の内側傾斜壁部に係止してなるように構成することもできる。そして、前記スカート壁の胴部壁嵌合部の下方部に、前記後加工係止壁を含む改ざん防止バンド部を、周方向に形成した弱化線により区画形成することが望ましい。
【0008】
【発明の実施の形態】
以下、本発明を図1及び図2に示す実施形態により詳細に説明する。
図1は、内容物を充填して密封した状態での本発明の実施形態に係る紙製容器1を示している。本実施形態の紙製容器の特徴は、浅底容器であり、容器本体に扇形チーズピース等の内容物を充填後に、蓋体のスカート壁下端部を容器本体の底壁外面にカール加工して係止させ容易に開蓋できないようにして、流通段階等でのいたずら等による不正開蓋を防止し、且つ不正開蓋があった場合は、容器を目視することにより容易に判別できるようにした点にある。
【0009】
本実施形態の紙製容器1は、浅底円筒形状で上端が開口している容器本体2と、同じく浅底円筒形状で下端が開口している蓋体3とからなる。本発明の紙製容器は、その材料が紙を主体とする材料で形成されていることを意味し、蓋体及び容器本体を形成する材料は、例えば、耐久力のある弾性板紙、防水加工紙、耐熱板紙、板紙に合成樹脂をコーティングした合紙、合成樹脂フイルムやアルミ箔をラミネートしたラミネート紙等で形成できる。容器本体2は、従来のこの種容器と同様に、筒状の胴部壁4と円盤状の底壁5の2ピースからなり、胴部壁3の下端を内側にカールして底壁受け部6を形成し、胴部壁4内に嵌合した底壁5を支持している。
【0010】
蓋体3は、長方形状のブランクの両端縁を貼合して円筒状に形成したスカート壁8と、天壁となる円板状の天板9との2ピースからなる。スカート壁8は、容器本体2の胴部壁4よりも高く形成され、天板9の天面が係止する上端部に形成された内巻リブ部10、容器本体の胴部壁に嵌合する胴部壁嵌合部11、容器本体の底部に係合する後加工係止壁部12とからなり、該後加工係止壁部12は、内容物が充填された容器本体に後加工でカール状に係止加工するまでは、図1(b)に仮想線で示すように胴部壁嵌合部11に直線状につながって、下端はストレートに開放して開口している。したがって、後述するように容器本体の胴部壁4に密に嵌合できるように、胴部壁嵌合部11の直径を選定できると共に、後加工係止壁部12の下端から天板9が容易に嵌合でき、天板9とスカート壁の組立が容易である。天板9は、単に胴部壁嵌合部11に嵌合して嵌合後内巻リブ部10に係合させるのみでもよく、胴部壁嵌合部11に嵌合後内巻リブ部10と接着させるようにしてもよい。
【0011】
胴部壁嵌合部11の下方寄りの位置には、容器を開蓋するに際して、引き裂いて容器本体に係止している係止部13を胴部壁嵌合部11の下方から分離して、開蓋を可能とするために、周方向ミシン目14が形成されている。周方向ミシン目14によってスカート壁8は、開蓋後に再蓋するときの容器本体の胴部壁と嵌合する部分となるスカート壁本体15と、容器本体底部への係止部および引き裂き片の部分となる改ざん防止バンド部18とに区画される。周方向ミシン目14の一部には、スカート壁8の下端に達する縦方向ミシン目16が形成されていると共に、その上方に開蓋時のつまみ片を形成するように上方に突出するつまみ片形成用ミシン目17が形成されている。なお、縦方向ミシン目16及びつまみ片形成用ミシン目17は、開蓋時に改ざん防止バンド部18をスカート壁本体15から周方向ミシン目に沿って引き裂くことができれば、必ずしも必要とするものではない。
【0012】
本実施形態の紙製容器1は、以上のように構成された容器本体2と蓋体3とからなり、充填工程でチーズ等の内容物20を充填し、次の工程で蓋体3を嵌合して被せる。次いで、容器本体の胴部壁4の下端から突出している後加工係止壁部12を適宜の工具で、容器本体の胴部壁4の下端にカールして形成された底壁受け部6の外面としっかり係止するように内巻にカール加工して係止部13を形成する。その場合、係止部13のカール中心P1が底壁受け部6のカール中心P2の直下上に位置するか、若しくは若干カール中心P1がカール中心P2よりも容器内側に位置するように係止部13のカールを形成するのが望ましい。それにより、底受け部6と係止部13の係止点P0が係止部13のカール中心P1と同一鉛直線上あるいはそれよりも容器外側寄りに位置し、蓋体3を悪戯等により無理に上方を引き上げると却って噛み合いが強まることになり、底受け部6と係止部13の係止がスッポ抜けることなく強固に保持し、もはやその状態では容器本体から蓋体を除去して開蓋することはできない。特に本発明では、蓋を容器本体に被せてから後加工により後加工係止壁部12をカーリングして係止加工するので、容器本体に緩みなく固く係止することができる。また、係止部が容器本体の底部に係止するので、従来の容器開口端部に形成されているカール部に係止させる場合と比べて係止部の大きさに制限を受けることがなく、従来の容器開口端部に形成されているカール部に係止させる場合と比べて、係止に十分な大きさで係止させることができる。
【0013】
そして、この紙製容器を開蓋するには、縦方向ミシン目16から破断して改ざん防止バンド部18の先端部の摘み部を起して、そこを摘んで引っ張ることによって、周方向ミシン目14が破断して改ざん防止バンド部18がスカート壁本体15と分離し、除去することができる。それにより蓋体3は容器本体2との係止がなくなり、自由に蓋を開くことができる。
【0014】
以上のように、本発明では、容器本体2が通常の2ピース構造であっても、容器本体の底壁受け部6と蓋体3を強固に係止でき、改ざん防止バンド部を破断しない限り開蓋することができない、従来のチーズピース包装容器にない改ざん防止機能に優れたチーズピース包装容器を得ることができる。また、本発明の紙製容器によれば、改ざん防止のために接着テープ等での封緘の必要がなく、外観的にもすっきりとしてデザインにも優れた形態となる。そして、不正開蓋があった場合、改ざん防止バンド部がミシン目から破断されているから、店頭などで目視により容易に判別でき、確実な不正開蓋表示機能を有する紙製容器を得ることができる。しかも本発明では、容器底部との係止であるので、仮に係止部と底壁面との間に器具を挿入して係止部を起こして不正行為を行った場合は、目立ち易いので、直ぐに判別することができる。
【0015】
図2は、本発明の他の実施形態に係る紙製容器を示し、前記実施形態と相違する点のみ説明し、同一構成については前記実施形態と同一符号を用い詳細な説明は省略する。本実施形態の紙製容器30は、容器本体2は前記実施形態と同様に胴部壁4と底壁5の2ピースからなり、底壁5は胴部壁4の底壁受け部6に支持されている。本実施形態では、蓋体31の巻締部の構造が前記実施形態と相違している。即ち、本実施形態では、後加工係止壁部を前記実施形態よりも長く形成して、係止部32のカール部33が、図示のように、底壁受け部6の半径方向内側で係合し、且つ底壁5にも係合するように巻締してある。以上のような形状で巻締することにより、より強固に蓋体を容器本体に係止することができ、改ざんを確実に防止することができる。
【0016】
図3は、本発明のさらに他の実施形態に係る紙製容器であり、本実施形態では、図1に示す実施形態の紙製容器1における容器本体の底壁受け部のカールを平坦に潰したものに相当する。即ち、本実施形態の紙製容器35における容器本体36の底壁受け部37を平坦に潰して内側に直角に屈曲し、その平坦上面で底壁5を支持すると共に、平坦下面に蓋体3のカール状係止部13を係止させてある。それにより、図1に示す実施形態の場合と比べて容器の底部高さを低くすることができると共に、係止部13と底壁受け部37との係止がより安定するという効果を奏する。
【0017】
図4は、本発明のさらに他の実施形態に係る紙製容器であり、本実施形態の紙容器40では、容器本体41が一枚のブランクを絞り成形により形成された1ピースからなり、その底部外周部に環状脚部42を有する容器本体41に適用した場合を示している。該実施形態の場合、蓋体の後加工係止壁部の巻締は、環状脚部42を超えてカール部が底壁平坦部43及び環状脚部42の内側傾斜壁部44に接するように後加工係止壁部の先端部をカーリングしてカール部45を形成して巻締してある。それにより、底部外周面に凸条がある容器本体であっても、蓋体を後加工により巻締することができる。
【0018】
以上、本発明の種々の実施形態について説明したが、本発明はこれらの実施形態に限らず、その技術的思想の範囲内で種々の設計変更が可能である。例えば、前記実施形態では、蓋体の係止部はカール形状に形成したが、必ずしもカール形状に限らず、例えば係止部をカールを平坦に潰した形状、あるいは他の楕円形や多角形に成形した形状に形成することも可能である。
【0019】
【発明の効果】
以上のように本発明によれば、容器本体と蓋体の係止力が強く、係止部を破損しない限り開蓋ができず、不正開蓋を防止すると共に不正開蓋があった場合は目視により容易に判別でき、改ざん防止機能に優れ、且つデザイン的にも優れた形態を採用できる紙製容器を得ることができる。特に、本発明では、該後加工係止壁は、胴部壁嵌合部の下端と直線状に繋がって形成され、内容物充填済みの容器本体の胴壁に外嵌合してから後加工により容器本体の平坦被係止部に係止させるので、予め係止部を形成してある蓋を容器本体に強制的に嵌合して係止させる従来のものに比べて強く係止させることができ、しかも係止部が係止する位置は容器の底壁であるから、十分な係止面積を確保することができ、係止部の大きさに制限を受けず強固に巻締することができる。また、容器本体は、従来周知の2ピース形状のものを採用でき、蓋体のみを変更することで製造が可能である。
【図面の簡単な説明】
【図1】(a)は本発明の実施形態に係る紙製容器の内容物を充填して閉蓋した状態の一部断面正面図であり、(b)はその要部拡大図である。
【図2】本発明の他の実施形態に係る紙製容器を閉蓋した状態の要部断面正面図である。
【図3】本発明のさらに他の実施形態に係る紙製容器を閉蓋した状態の要部断面正面図である。
【図4】本発明のさらに他の実施形態に係る紙製容器を閉蓋した状態の要部断面正面図である。
【符号の説明】
1、30、35、40 紙製容器 2、36、41 容器本体
3、31 蓋体 5 底壁
6、37 底壁受け部 8 スカート壁
10 内巻リブ部 11 胴部壁嵌合部
12 後加工係止壁部 13、32 係止部
14 周方向ミシン目 15 スカート壁本体
18 改ざん防止バンド部 20 内容物
33 カール部 42 環状脚部
43 底壁平坦部 44 内側傾斜壁部
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a paper container comprising a container body and a lid, and more particularly to a paper container having a lid provided with a falsification preventing function for preventing tampering by unauthorized opening at the distribution stage.
[0002]
[Prior art]
Conventionally, for example, a shallow cylindrical paper container for storing and packaging a fan-shaped cheese piece or the like packaged for each small block is composed of a shallow cylindrical container body and a lid having a skirt wall externally fitted to the main body. Means for wrapping the filled contents simply by fitting and covering the skirt wall of the lid on the body of the container body, and locking means with the container body for preventing the lid from being opened. (Sealing means) is not provided. Therefore, in order to prevent the lid from being freely opened at the distribution stage, the lid and the container main body are fixed with a plurality of adhesive tapes. However, in some cases, the adhesive tape can be peeled off and re-adhered, which is insufficient as a falsification prevention function.
[0003]
Further, in the case of a cup-shaped paper container or the like, conventionally, a locking portion is formed by bending inward at the end of the skirt wall of the lid, and the lid is fitted to the container main body. The lid and the container are locked so that the lid cannot be opened unless the lid is damaged by locking the flange to the flange or the curl formed at the opening end of the container (see, for example, 4-239441, Japanese Utility Model Application Laid-Open No. 56-12207). However, in this case, the locking portion of the lid overlies the flange or the curled portion of the container body due to the elastic deformation and engages below the locking portion, so that it is difficult to obtain a strong locking, and the tampering prevention function is not yet satisfactory. Was.
[0004]
[Patent Document 1]
JP-A-4-239441 [Patent Document 2]
Japanese Utility Model Publication No. Sho 56-12207
[Problems to be solved by the invention]
In order to solve the above-mentioned problems, the present inventors have proposed that a skirt wall of a lid body includes a body wall fitting portion and a post-processing locking wall formed at a lower end portion of the body wall fitting portion. In the case where the container body is a shallow container, the post-processing wall is curled into an inner winding shape by post-processing and locked on the outer peripheral flat portion of the bottom wall of the container body, so that the container body and the lid are firmly connected. A paper container that is locked and integrated and cannot be opened unless the tamper-resistant band is broken has been previously proposed (Japanese Patent Application No. 2002-143078).
The present invention is a further improvement of the above proposed invention, in which the proposed invention locks the curled portion of the lid on the flat portion of the bottom wall of the container body. There is a curl or an annular convex groove on the outer periphery of the bottom, so that the lid can be firmly locked and integrated even if it is not necessarily a flat part, so that it can be applied to a normal two-piece container body, An object of the present invention is to provide a paper container which has an excellent prevention function and can adopt a form which is also excellent in design.
[0006]
[Means for Solving the Problems]
A paper container of the present invention that achieves the above object is a paper container comprising a container main body having a body wall and a bottom wall, and a lid having a skirt wall and a top wall externally fitted to the container main body. The skirt wall of the lid includes a body wall fitting portion and a post-processing locking wall formed at a lower end portion of the body wall fitting portion, and the post-processing locking wall includes the lid body. The outer skirt wall is fitted to the body wall of the container body filled with the contents, and is a locking portion for locking to the outer peripheral portion of the bottom of the container body by post-processing. The shape of the paper container is not particularly limited, such as a shallow container, a deep container, a tubular shape, a cup shape, and a cylindrical cross-sectional shape, or an elliptical shape or a square shape.
[0007]
The container main body is composed of two pieces, a cylindrical body wall having a bottom end curled inward to form a bottom wall receiving portion, and a bottom wall supported by the bottom wall receiving portion. Are locked to the lower surface of the curled bottom wall receiving portion. Further, as another aspect, the container main body is formed of two pieces: a cylindrical body wall having a bottom wall curled inward to form a bottom wall receiving section, and a bottom wall supported by the bottom wall receiving section. The locking portion may be configured to be locked so as to engage with the inner surface of the curl-shaped bottom wall receiving portion in the container radial direction and the bottom surface of the bottom wall. Further, the container body is composed of two pieces, a cylindrical body wall having a lower end curled inward to form a bottom wall receiving portion, and a bottom wall supported by the bottom wall receiving portion. The wall receiving portion may be flattened and bent inward at a right angle to support the bottom wall with the flat upper surface, and the locking portion of the lid may be locked to the flat lower surface. Furthermore, the container main body is formed of one piece formed by drawing one blank, and has an annular leg on the outer peripheral portion of the bottom, and the bottom wall receiving portion extends beyond the annular leg. The curl portion may be configured to be engaged with the flat bottom wall and the inner inclined wall of the annular leg. Further, it is preferable that a tamper-resistant band portion including the post-processing locking wall is sectioned by a circumferential weakening line below the body wall fitting portion of the skirt wall.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the embodiments shown in FIGS.
FIG. 1 shows a paper container 1 according to an embodiment of the present invention in a state where contents are filled and sealed. The feature of the paper container of the present embodiment is that the container is a shallow bottom container.After filling the container body with contents such as a fan-shaped cheese piece, the lower end of the skirt wall of the lid is curled on the outer surface of the bottom wall of the container body. Locked to prevent easy opening, preventing unauthorized opening due to mischief etc. at the distribution stage, etc., and in the case of unauthorized opening, it is possible to easily determine by visually checking the container On the point.
[0009]
The paper container 1 according to the present embodiment includes a container body 2 having a shallow cylindrical shape and an open upper end, and a lid 3 also having a shallow cylindrical shape and an open lower end. The paper container of the present invention means that the material is formed of a material mainly composed of paper, and the material forming the lid and the container body is, for example, durable elastic paperboard, waterproof paper. It can be formed of heat-resistant paperboard, interleaf paper in which paperboard is coated with a synthetic resin, laminated paper in which a synthetic resin film or aluminum foil is laminated. The container body 2 is composed of two pieces, a cylindrical body wall 4 and a disc-shaped bottom wall 5, like the conventional container of this type. The lower end of the body wall 3 is curled inward and the bottom wall receiving portion is formed. 6 is formed to support the bottom wall 5 fitted in the body wall 4.
[0010]
The lid 3 is composed of two pieces: a skirt wall 8 formed by bonding both ends of a rectangular blank to form a cylindrical shape, and a disk-shaped top plate 9 serving as a top wall. The skirt wall 8 is formed higher than the body wall 4 of the container body 2, and is fitted to the inner winding rib 10 formed at the upper end where the top surface of the top plate 9 is locked, and the body wall of the container body. And a post-working locking wall portion 12 that engages with the bottom of the container body. The post-processing locking wall portion 12 forms a post-processed container body filled with contents. Until the locking process is performed in a curl shape, as shown by the imaginary line in FIG. 1B, it is linearly connected to the body wall fitting portion 11, and the lower end is opened straight and opened. Therefore, the diameter of the body wall fitting portion 11 can be selected so that the top plate 9 can be tightly fitted to the body wall 4 of the container body as described later, and the top plate 9 can be formed from the lower end of the post-processing locking wall portion 12. It can be fitted easily and the top plate 9 and the skirt wall can be easily assembled. The top plate 9 may simply be fitted into the body wall fitting portion 11 and engaged with the inner rib portion 10 after fitting. May be adhered.
[0011]
At the position near the lower part of the body wall fitting part 11, when opening the container, the locking part 13 which is torn and locked to the container body is separated from below the body part wall fitting part 11. A circumferential perforation 14 is formed to enable the lid to be opened. The skirt wall 8 is formed by the circumferential perforations 14 so that the skirt wall 8 is fitted to the body wall of the container body when the lid is reopened after the lid is opened. It is divided into a tamper-resistant band portion 18 serving as a portion. A longitudinal perforation 16 reaching the lower end of the skirt wall 8 is formed in a part of the circumferential perforation 14, and a knob piece protruding upward so as to form a knob piece at the time of opening the cover above it. A forming perforation 17 is formed. Note that the vertical perforations 16 and the knob piece forming perforations 17 are not necessarily required as long as the tamper-resistant band 18 can be torn from the skirt wall main body 15 along the circumferential perforations when the lid is opened. .
[0012]
The paper container 1 of the present embodiment includes the container main body 2 and the lid 3 configured as described above, and is filled with contents 20 such as cheese in a filling step, and the lid 3 is fitted in the next step. Put together. Then, the bottom wall receiving portion 6 formed by curling the post-processing locking wall portion 12 projecting from the lower end of the body wall 4 of the container body to the lower end of the body wall 4 of the container body with an appropriate tool. The locking portion 13 is formed by curling the inner winding so as to lock firmly with the outer surface. In this case, the curling center P1 of the locking portion 13 is located immediately below the curl center P2 of the bottom wall receiving portion 6, or the curling center P1 is positioned slightly inside the container with respect to the curling center P2. It is desirable to form 13 curls. Thereby, the locking point P0 between the bottom receiving portion 6 and the locking portion 13 is located on the same vertical line as the curl center P1 of the locking portion 13 or closer to the outside of the container than that, and the lid 3 is forcibly moved by mischief or the like. When the upper part is pulled up, the meshing becomes stronger, and the locking between the bottom receiving part 6 and the locking part 13 is firmly held without slipping off. In this state, the lid is removed from the container body and the lid is opened. It is not possible. In particular, in the present invention, since the post-processing locking wall portion 12 is curled and locked by post-processing after the lid is put on the container main body, the post-processing locking wall portion 12 can be firmly locked to the container main body without loosening. Further, since the locking portion is locked to the bottom of the container main body, the size of the locking portion is not limited as compared with the case where the locking portion is locked to the curl portion formed at the conventional container opening end. In addition, compared to the conventional case where the container is locked to the curl portion formed at the end of the opening of the container, the locking can be performed with a sufficient size for locking.
[0013]
In order to open the paper container, the circumferential perforation is cut by breaking the longitudinal perforation 16 to raise the knob at the tip of the tamper-resistant band 18, and pulling it. 14 breaks and the tamper-resistant band portion 18 is separated from the skirt wall main body 15 and can be removed. Thereby, the lid 3 is not locked with the container body 2 and the lid can be opened freely.
[0014]
As described above, in the present invention, even if the container main body 2 has a normal two-piece structure, the bottom wall receiving portion 6 and the lid 3 of the container main body can be firmly locked and the tamper-proof band portion is not broken. It is possible to obtain a cheese piece packaging container that cannot be opened and has an excellent tamper-proofing function not found in conventional cheese piece packaging containers. Further, according to the paper container of the present invention, there is no need to seal with an adhesive tape or the like in order to prevent tampering, and the appearance is clear and the design is excellent. Then, if there is an unauthorized opening, since the tamper-resistant band portion is broken from the perforation, it can be easily visually discriminated at a store or the like, and a paper container having a reliable unauthorized opening display function can be obtained. it can. Moreover, in the present invention, since the locking is performed with the bottom of the container, if a device is inserted between the locking portion and the bottom wall surface to raise the locking portion and perform an improper act, it is easily noticeable, so Can be determined.
[0015]
FIG. 2 shows a paper container according to another embodiment of the present invention, and only different points from the above embodiment will be described, and the same components will be denoted by the same reference numerals as those in the above embodiment, and detailed description thereof will be omitted. In the paper container 30 of this embodiment, the container main body 2 is composed of two pieces of a body wall 4 and a bottom wall 5 as in the above embodiment, and the bottom wall 5 is supported by a bottom wall receiving portion 6 of the body wall 4. Have been. In this embodiment, the structure of the tightening portion of the lid 31 is different from that of the above embodiment. That is, in the present embodiment, the post-processing locking wall portion is formed to be longer than that of the above-described embodiment, and the curl portion 33 of the locking portion 32 engages inside the bottom wall receiving portion 6 in the radial direction as illustrated. And is wound so as to engage with the bottom wall 5. By tightening in the above-described shape, the lid can be more securely locked to the container body, and tampering can be reliably prevented.
[0016]
FIG. 3 shows a paper container according to still another embodiment of the present invention. In this embodiment, the curl of the bottom wall receiving portion of the container body in the paper container 1 of the embodiment shown in FIG. Equivalent to That is, the bottom wall receiving portion 37 of the container body 36 of the paper container 35 of the present embodiment is flattened and bent inward at a right angle, the bottom upper surface is supported by the flat upper surface, and the lid body 3 is disposed on the flat lower surface. Are locked. Thus, the height of the bottom of the container can be reduced as compared with the case of the embodiment shown in FIG. 1, and the locking between the locking portion 13 and the bottom wall receiving portion 37 is more stable.
[0017]
FIG. 4 shows a paper container according to still another embodiment of the present invention. In the paper container 40 of the present embodiment, the container body 41 is formed of one piece formed by drawing a blank into one piece. The case where the present invention is applied to a container body 41 having an annular leg 42 on the outer periphery of the bottom is shown. In the case of this embodiment, the post-processing locking wall portion of the lid is tightened so that the curl portion goes beyond the annular leg portion 42 and contacts the bottom wall flat portion 43 and the inner inclined wall portion 44 of the annular leg portion 42. The front end portion of the post-processing locking wall portion is curled to form a curl portion 45, which is then tightened. Thereby, even in the case of a container body having a convex portion on the bottom outer peripheral surface, the lid body can be tightened by post-processing.
[0018]
Although various embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various design changes can be made within the scope of the technical idea. For example, in the above-described embodiment, the locking portion of the lid is formed in a curled shape. However, the locking portion is not necessarily limited to the curled shape. For example, the locking portion may be formed into a shape in which the curl is flattened, or into another elliptical shape or a polygonal shape. It is also possible to form it into a molded shape.
[0019]
【The invention's effect】
As described above, according to the present invention, the locking force between the container main body and the lid is strong, the lid cannot be opened unless the locking portion is damaged, and the illegal opening is prevented when the illegal opening is prevented. It is possible to obtain a paper container which can be easily discriminated visually, has an excellent tamper-preventing function, and can adopt a form excellent in design. In particular, in the present invention, the post-processing locking wall is formed so as to be linearly connected to the lower end of the body wall fitting portion, and is externally fitted to the body wall of the container body filled with the contents before the post-processing. The lid is locked to the flat locked part of the container body, so that the lid with the locking part formed in advance is forcibly fitted to the container body and locked stronger than the conventional one that locks. In addition, since the position where the locking part is locked is at the bottom wall of the container, a sufficient locking area can be secured, and firmly tightening is not limited by the size of the locking part. Can be. In addition, the container body can be a conventionally known two-piece shape, and can be manufactured by changing only the lid.
[Brief description of the drawings]
FIG. 1A is a partial cross-sectional front view of a paper container according to an embodiment of the present invention in a state in which contents are filled and a lid is closed, and FIG. 1B is an enlarged view of a main part thereof.
FIG. 2 is a cross-sectional front view of a main part of a paper container according to another embodiment of the present invention with a lid closed.
FIG. 3 is a cross-sectional front view of a main part of a paper container according to still another embodiment of the present invention with a lid closed.
FIG. 4 is a cross-sectional front view of a main part of a paper container according to still another embodiment of the present invention with a lid closed.
[Explanation of symbols]
1, 30, 35, 40 Paper container 2, 36, 41 Container body 3, 31 Lid 5 Bottom wall 6, 37 Bottom wall receiving part 8 Skirt wall 10 Inner winding rib part 11 Body wall fitting part 12 Post-processing Locking wall portions 13, 32 Locking portions 14 Peripheral perforations 15 Skirt wall main body 18 Tamper proof band portion 20 Contents 33 Curl portion 42 Annular leg 43 Bottom wall flat portion 44 Inside inclined wall portion

Claims (6)

胴壁と底壁を有する容器本体と、該容器本体に外嵌合するスカート壁と天壁を有する蓋体とからなる紙製容器であって、前記蓋体のスカート壁は、胴部壁嵌合部と該胴部壁嵌合部の下端部に形成された後加工係止壁とからなり、該後加工係止壁が、前記蓋体のスカート壁を内容物充填済みの容器本体の胴壁に外嵌合して後加工により容器本体の底部外周部に係止する係止部となっていることを特徴とする紙製容器。A paper container comprising a container body having a body wall and a bottom wall, and a lid having a skirt wall and a top wall externally fitted to the container body, wherein the skirt wall of the lid is fitted to the body wall. A mating portion and a post-processed locking wall formed at a lower end portion of the body wall fitting portion, and the post-processed locking wall forms a body of the container body in which the skirt wall of the lid is filled with contents. A paper container characterized in that the paper container has an engaging portion which is externally fitted to a wall and is engaged with an outer peripheral portion of a bottom of the container body by post-processing. 前記容器本体は、下端が内側にカールして底壁受け部を形成してなる筒状の胴部壁と、前記底壁受け部に支持された底壁の2ピースからなり、前記係止部が前記底壁受け部の下面に係止してなる請求項1に記載の紙製容器。The container main body is composed of two pieces, a cylindrical body wall having a bottom end curled inward to form a bottom wall receiving portion, and a bottom wall supported by the bottom wall receiving portion. The paper container according to claim 1, wherein the paper container is engaged with a lower surface of the bottom wall receiving portion. 前記容器本体は、下端が内側にカールして底壁受け部を形成してなる筒状の胴部壁と、前記底壁受け部に支持された底壁の2ピースからなり、前記係止部が前記カール状の前記底壁受け部の容器半径方向内側面と底壁下面とに係合するように係止してなる請求項1に記載の紙製容器。The container main body is composed of two pieces, a cylindrical body wall having a bottom end curled inward to form a bottom wall receiving portion, and a bottom wall supported by the bottom wall receiving portion. 2. The paper container according to claim 1, wherein the paper container is locked so as to engage with the inner surface of the curled bottom wall receiving portion in the container radial direction and the lower surface of the bottom wall. 前記容器本体は、下端が内側にカールして底壁受け部を形成してなる筒状の胴部壁と、前記底壁受け部に支持された底壁の2ピースからなり、前記底壁受け部を平坦に潰して内側に直角に屈曲させ、その平坦上面で底壁を支持すると共に、平坦下面に前記蓋体の係止部を係止させてなる請求項1に記載の紙製容器。The container main body is composed of a cylindrical body wall having a lower end curled inward to form a bottom wall receiving portion, and a bottom wall supported by the bottom wall receiving portion. 2. The paper container according to claim 1, wherein the portion is flattened and bent inward at a right angle, the bottom wall is supported by the flat upper surface, and the locking portion of the lid is locked to the flat lower surface. 前記容器本体は、一枚のブランクを絞り成形により形成された1ピースからなり、その底部外周部に環状脚部を有し、前記底壁受け部が前記環状脚部を超えてカール部が底壁平坦部及び環状脚部の内側傾斜壁部に係止してなる請求項1に記載の紙製容器。The container main body is formed of one piece formed by drawing a blank, and has an annular leg on the outer periphery of the bottom. The bottom wall receiving portion extends beyond the annular leg and the curl portion has a bottom. 2. The paper container according to claim 1, wherein the paper container is engaged with the flat wall and the inner inclined wall of the annular leg. 前記スカート壁の胴部壁嵌合部の下方部に、前記後加工係止壁を含む改ざん防止バンド部を、周方向に形成した弱化線により区画形成してなる請求項1〜5何れか記載の紙製容器。The tamper-resistant band portion including the post-processing locking wall is formed below a lower portion of the body wall fitting portion of the skirt wall by a weakening line formed in a circumferential direction. Paper container.
JP2003005013A 2003-01-10 2003-01-10 Paper container Withdrawn JP2004217233A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110844308A (en) * 2019-12-19 2020-02-28 瑞安市贝斯特机械有限公司 Anti-leakage paper cover
CN110979890A (en) * 2019-12-19 2020-04-10 瑞安市贝斯特机械有限公司 Anti-theft paper cover and anti-theft paper cup

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110844308A (en) * 2019-12-19 2020-02-28 瑞安市贝斯特机械有限公司 Anti-leakage paper cover
CN110979890A (en) * 2019-12-19 2020-04-10 瑞安市贝斯特机械有限公司 Anti-theft paper cover and anti-theft paper cup

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