JP2022008135A - Lid body - Google Patents

Lid body Download PDF

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JP2022008135A
JP2022008135A JP2021093197A JP2021093197A JP2022008135A JP 2022008135 A JP2022008135 A JP 2022008135A JP 2021093197 A JP2021093197 A JP 2021093197A JP 2021093197 A JP2021093197 A JP 2021093197A JP 2022008135 A JP2022008135 A JP 2022008135A
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Prior art keywords
lid
canopy
container
side wall
wall
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JP2021093197A
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JP7120393B2 (en
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朗 高野
Akira Takano
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KY7 Ltd
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KY7 Ltd
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Priority claimed from PCT/JP2020/048100 external-priority patent/WO2021245968A1/en
Application filed by KY7 Ltd filed Critical KY7 Ltd
Priority to CA3172870A priority Critical patent/CA3172870A1/en
Priority to BR112022024776A priority patent/BR112022024776A2/en
Priority to MX2022015278A priority patent/MX2022015278A/en
Priority to KR1020227038466A priority patent/KR20220156965A/en
Priority to AU2021284100A priority patent/AU2021284100A1/en
Priority to PCT/JP2021/021201 priority patent/WO2021246488A1/en
Priority to EP21817785.5A priority patent/EP4008643B1/en
Priority to US17/768,037 priority patent/US20240092541A1/en
Priority to ES21817785T priority patent/ES2967380T3/en
Priority to CN202110624194.2A priority patent/CN113548314B/en
Priority to CN202121243752.2U priority patent/CN216425426U/en
Priority to TW110206506U priority patent/TWM624621U/en
Priority to TW110120494A priority patent/TWI787858B/en
Publication of JP2022008135A publication Critical patent/JP2022008135A/en
Publication of JP7120393B2 publication Critical patent/JP7120393B2/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging

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Abstract

To provide a lid body having excellent adhesion to a container mouth part using a paper-based raw material.SOLUTION: The lid body, which is detachably attached to a container mouth part, comprises a top lid and a side wall formed of a paper-based raw material so as to taper and incline from an upper end side toward a lower end side while surrounding a circumference of the top lid. The side wall joins both ends sides of a blank material in an annular fan shape to each other and is formed so as to taper and incline from the upper end side toward the lower end side. The top lid and the side wall are integrated to each other by joining a rising part formed on a peripheral edge of the top lid to an inner surface of an upper wall of the side wall. In the inner periphery side of the lower wall of the side wall tapering and inclining from the upper end side toward the lower end side is provided an engagement part that engages with the container mouth part with the container mouth part sealed, which is formed so that an inner dimension at the lower end side of the engagement part is smaller than an inner dimension at the upper end side of the engagement part.SELECTED DRAWING: Figure 2

Description

本発明は紙系素材よりなる蓋体に関する。 The present invention relates to a lid made of a paper-based material.

従来より、コンビニエンスストアやスーパーマーケット等では飲食料品を簡易容器に入れて販売する販売形態が広く行われている。例えばコンビニエンスストアでは、コーヒーなどの飲料を紙やプラスチックからなるカップ形状の容器に入れて販売することが行われているが、購入者がコーヒー等の飲料を持ち帰る際に、内容物が溢れ出ないようにするため、容器口部を覆うための蓋も各種提案されている。この種の蓋としては、従来よりプラスチック成形体からなるものが広く用いられていた。しかしながら、プラスチック製品は各種の環境問題を引き起こす虞があることから、近年、短期間で使い捨てされる飲食品用の簡易容器や蓋の原材料としてプラスチック使用の削減が叫ばれている。このため、プラスチックにかわって紙製の蓋も提案されている（特許文献１、特許文献２）。 Conventionally, in convenience stores, supermarkets, etc., a sales form in which food and drink products are sold in simple containers has been widely used. For example, at convenience stores, beverages such as coffee are sold in cup-shaped containers made of paper or plastic, but when the purchaser brings back beverages such as coffee, the contents do not overflow. Various lids for covering the mouth of the container have also been proposed. As a lid of this type, a lid made of a plastic molded body has been widely used. However, since plastic products may cause various environmental problems, in recent years, reduction of the use of plastics as raw materials for simple containers and lids for foods and drinks that are disposable in a short period of time has been called for. For this reason, paper lids have been proposed instead of plastic (Patent Documents 1 and 2).

特開２００６－２４８５３０号公報Japanese Unexamined Patent Publication No. 2006-248530 特表２０１２－５１３９４０号公報Special Table 2012-513940 Gazette

しかしながら、紙材料はプラスチック材料に比べて素材の弾力性が低く、成形性も低くプラスチックのような複雑な形状に成形することは困難であるため、プラスチック製の蓋のように、容器口部を高い密閉性をもって確実に閉蓋でき、容器内容物が液体であっても漏れる虞のない形状・構造の紙蓋を得ることは容易ではなかった。 However, the elasticity of the paper material is lower than that of the plastic material, and the moldability is also low, so that it is difficult to form a complicated shape like plastic. It was not easy to obtain a paper lid with a shape and structure that could be reliably closed with high airtightness and that would not leak even if the contents of the container were liquid.

従来より紙製の蓋の容器口部への密着性を高めるために、構造上の工夫が種々なされている。特許文献１には、紙製容器の円錐状の本体部の内面に係合する円錐状外面を有する壁面部と、その壁面部に囲まれた天蓋部を有し、容器口部の内側にはまり込むように構成された蓋体が記載されている。また特許文献２には天板と、天板の周りに下向きに設置される側壁とで構成され、側壁を補強する補強材の内上端と天板との間の収納部に、容器の上端周りを保持させて容器を閉蓋するように構成された紙蓋が記載されている。 Conventionally, various structural measures have been taken in order to improve the adhesion of the paper lid to the container mouth. Patent Document 1 has a wall surface portion having a conical outer surface that engages with the inner surface of the conical body portion of a paper container, and a canopy portion surrounded by the wall surface portion, which fits inside the container mouth portion. A lid configured to be recessed is described. Further, Patent Document 2 is composed of a top plate and a side wall installed downward around the top plate, and around the upper end of the container in a storage portion between the inner upper end of the reinforcing material for reinforcing the side wall and the top plate. A paper lid configured to hold and close the container is described.

しかしながら、特許文献１、２に記載の紙蓋は、閉蓋時の容器口部との間の密着性が十分とは言い難く、容器内の液体が溢れ出る虞があった。また、紙製の蓋や容器の場合、紙の特性上、湿度等の影響によって蓋体や容器口部の寸法にバラツキが生じ易い。しかしながら上記従来の紙蓋は、容器口部と係合する部位が、側壁と天蓋とが重なった構造に形成されていたり、側壁が補強材で補強されているため、容器口部にはまり合う部分は固く弾力性に乏しい。このため蓋体や容器口部の寸法に微細なバラツキが生じた場合、確実に容器を閉蓋できなくなり、安定した密閉性能を発現し難いという問題があった。 However, it cannot be said that the paper lids described in Patent Documents 1 and 2 have sufficient adhesion to the container mouth when the lid is closed, and there is a risk that the liquid in the container will overflow. Further, in the case of a paper lid or container, due to the characteristics of the paper, the dimensions of the lid and the container mouth are likely to vary due to the influence of humidity and the like. However, in the above-mentioned conventional paper lid, the portion that engages with the container mouth is formed in a structure in which the side wall and the canopy overlap, or the side wall is reinforced with a reinforcing material, so that the portion that fits into the container mouth. Is hard and lacks elasticity. For this reason, when the dimensions of the lid and the mouth of the container are finely varied, the container cannot be closed reliably, and there is a problem that it is difficult to exhibit stable sealing performance.

本発明は上記の点に鑑みなされたもので、紙系素材よりなる蓋体でありながら、紙製容器に対しても安定した密閉性を得ることができ、液漏れ防止性に優れた蓋体を提供することを目的とする。 The present invention has been made in view of the above points, and although the lid is made of a paper-based material, a stable airtightness can be obtained even for a paper container, and the lid has excellent liquid leakage prevention properties. The purpose is to provide.

すなわち本発明は、
（１）容器口部に着脱自在に取り付けられる蓋体であって、天蓋と、該天蓋の周囲を囲繞し、上端側から下端側に向かって先細り傾斜状に紙系素材で形成された側壁とを有し、前記側壁は、環状扇形のブランク材の両端側を相互に接合して上端側から下端側に向かって先細り傾斜状に形成され、前記天蓋と前記側壁とは、前記天蓋の周縁に形成された立ち上がり部を、前記側壁の上部壁内面に接合して一体化されており、前記上端側から前記下端側に先細り傾斜した前記側壁の下部壁の内周側には、前記容器口部を封止した状態において、該容器口部と係合する係合部を有し、前記係合部の下端側内寸法が該係合部の上端側内寸法より小さくなるように形成されていることを特徴とする蓋体、
（２）前記側壁は、紙系素材の両端部を接合して筒状形成したものである上記（１）の蓋体、
（３）前記側壁下部壁の係合部は、容器口部のカール部に係合する形状に形成されている上記（１）の蓋体、
（４）前記側壁下部壁の係合部は、前記下部壁内周面を押圧プレスして形成した環状凹溝よりなる上記（１）の蓋体、
（５）係合部の下端側内寸法が、上端側内寸法よりも小さく形成されている上記（１）の蓋体、
（６）容器口部に取り付けた際に、係合部の下端側が容器側壁と非接触状態で取り付けられる上記（１）の蓋体、
（７）前記側壁は、蓋体が取り付けられる容器の側壁の傾斜角よりも小さい傾斜角で傾斜状に形成されている上記（１）の蓋体、
（８）前記天蓋の天面部は、凹湾曲して形成されていることを特徴とする上記（１）の蓋体。
（９）前記天蓋は、紙系素材により形成されている上記（１）の蓋体、
（１０）前記天蓋は、フィルム又はシートにより形成されている上記（１）の蓋体、
（１１）前記天蓋は、立ち上がり部から内側に向かって凹陥状部を有する上記（１）の蓋体、
（１２）前記側壁の上部壁の上端部は、天蓋周縁の立ち上がり部内面側に折り曲げ形成されている上記（１）の蓋体、
（１３）天蓋の立ち上がり部の上端側は、立ち上がり部内面側に折り曲げ形成されている上記（１）の蓋体、
（１４）天蓋の立ち上がり部の上端側は、側壁の上部壁の外側に折り曲げ形成されている上記（１）の蓋体、
（１５）上端に、カール状部が設けられている上記（１）の蓋体、
（１６）前記カール状部が、側壁の上部壁の上端部を屈曲して形成されている上記（１５）の蓋体、
（１７）前記カール状部が、天蓋の立ち上がり部上端部を屈曲して形成されている上記（１５）の蓋体、
を要旨とするものである。 That is, the present invention
(1) A lid that can be detachably attached to the mouth of the container, and a canopy and a side wall that surrounds the canopy and is formed of a paper-based material in a tapered shape from the upper end side to the lower end side. The side wall is formed in a tapered shape from the upper end side to the lower end side by joining both end sides of the annular fan-shaped blank material to each other, and the canopy and the side wall are formed on the peripheral edge of the canopy. The formed rising portion is joined to the inner surface of the upper wall of the side wall and integrated, and the container mouth portion is on the inner peripheral side of the lower wall of the side wall that is tapered from the upper end side to the lower end side. Has an engaging portion that engages with the container mouth portion in a sealed state, and is formed so that the inner dimension on the lower end side of the engaging portion is smaller than the inner dimension on the upper end side of the engaging portion. The lid, which is characterized by that
(2) The side wall is formed into a cylindrical shape by joining both ends of a paper-based material.
(3) The lid body of the above (1), wherein the engaging portion of the lower wall of the side wall is formed in a shape that engages with the curled portion of the container mouth portion.
(4) The lid body of the above (1), wherein the engaging portion of the lower wall of the side wall is an annular groove formed by pressing and pressing the inner peripheral surface of the lower wall.
(5) The lid body of the above (1), in which the inner dimension on the lower end side of the engaging portion is formed smaller than the inner dimension on the upper end side.
(6) The lid body of the above (1), which is attached to the container opening in a state where the lower end side of the engaging portion is not in contact with the container side wall.
(7) The lid of the above (1), wherein the side wall is formed in an inclined shape with an inclination angle smaller than the inclination angle of the side wall of the container to which the lid is attached.
(8) The lid body of the above (1), wherein the top surface portion of the canopy is formed by being concavely curved.
(9) The canopy is the lid of the above (1), which is made of a paper-based material.
(10) The canopy is the lid of the above (1) formed of a film or a sheet.
(11) The canopy has a concave portion inward from a rising portion, and the canopy has a concave portion.
(12) The lid body of the above (1), wherein the upper end portion of the upper wall of the side wall is bent toward the inner surface side of the rising portion of the canopy peripheral edge.
(13) The lid body of the above (1), wherein the upper end side of the rising portion of the canopy is formed by bending toward the inner surface side of the rising portion.
(14) The lid body of the above (1), wherein the upper end side of the rising portion of the canopy is bent and formed on the outside of the upper wall of the side wall.
(15) The lid of (1) above, which is provided with a curled portion at the upper end.
(16) The lid body of the above (15), wherein the curled portion is formed by bending the upper end portion of the upper wall of the side wall.
(17) The lid body of the above (15), wherein the curled portion is formed by bending the upper end portion of the rising portion of the canopy.
Is the gist.

本発明の蓋体は、紙系素材で囲繞状に形成した側壁の上端側を、天蓋周縁に形成した立ち上がり部と接合一体化し、側壁下端側の内周に容器口部と係合する係合部を設けた構成としたことにより、容器口部に係合するための係合部を設けた側壁下端部は、紙系素材の重なり構造を有していないため弾力性があり、このため容器口部の外寸法に寸法バラツキ等による多少の寸法誤差が生じたとしても、高い密閉性を維持した状態で容器口部に係合して閉蓋することができる。また側壁は、上端側から下端側に向かって先細り傾斜状に形成されていることで、側壁下端部が弾力性を有することと相俟って、蓋体に負荷が加わった際でも容易に容器から外れる虞がない。また側壁下端部が弾力性を有するため、係合部の寸法を容器口部の外寸法よりやや小さめに形成した場合でも容器口部への係合が容易であり、より高い密閉性を発現することができる。本発明の蓋体は、容器口部の外寸法のバラツキに対する対応性が優れているため、容器口部の寸法の略等しい用途等の異なる他の容器に対しても使用することが可能である。また側壁を先細り傾斜状に形成することにより、蓋体のスタッキング性が高まるため、蓋体の保管、運搬時の省スペース化が可能となる。また、上端側から下端側に向かって先細りテーパー状に傾斜状に形成された側壁の下部壁は弾力性を有し、側壁の上部壁は天蓋の周囲の立ち上がり部と接合されて高い強度の構造を有するため、容器口部に対する蓋体の保持性が高まる。本発明の蓋体は、弾力性を有した下部壁に設けられた係合部が容器口部に係合し、容器口部を確実に強く保持して閉止するため、熱いコーヒー等を収納した場合の様に容器内圧力が高くなった場合や、内容物を収納した容器を誤って落とした場合等でも、蓋体が容器口部から容易に外れてしまう虞がなく、大型の容器の蓋体としてより効果的である。また容器口部と係合する係合部が設けられる側壁の下部壁は弾力性を有するため、容器口部を確実に係合して閉止できるとともに、蓋体の取り外しも容易に行うことができる。また本発明の蓋体は、天蓋の周囲に立ち上がり部を形成し、この立ち上がり部を側壁の上部壁内面に接合した構造としたため、従来の蓋体のように、天蓋部と側壁との接合縁部の隙間が存在しないため、このような隙間に液体飲料等がしみ込む虞がない。本発明の蓋体は、全体がプラスチック成形品製の蓋体に比べて捩れ変形しにくいため、蓋体で閉蓋した食品収納容器を持ち運ぶ際に、プラスチック成形品製の蓋体のように、不用意に蓋体が捩れ変形して外れてしまう虞も少ない。 In the lid body of the present invention, the upper end side of the side wall formed in a box shape made of a paper-based material is joined and integrated with the rising portion formed on the peripheral edge of the canopy, and the inner circumference of the lower end side of the side wall engages with the container mouth portion. Due to the configuration provided with the portion, the lower end portion of the side wall provided with the engaging portion for engaging with the container mouth portion is elastic because it does not have the overlapping structure of the paper-based material, and therefore the container. Even if there is some dimensional error due to dimensional variation in the outer dimensions of the mouth portion, the lid can be closed by engaging with the container mouth portion while maintaining a high degree of airtightness. In addition, since the side wall is formed in a tapered shape from the upper end side to the lower end side, the lower end of the side wall has elasticity, and the container can be easily loaded even when a load is applied to the lid. There is no risk of coming off. Further, since the lower end of the side wall has elasticity, even if the size of the engaging part is formed to be slightly smaller than the outer size of the container mouth, it is easy to engage with the container mouth and a higher airtightness is exhibited. be able to. Since the lid of the present invention has excellent compatibility with variations in the outer dimensions of the container mouth, it can be used for other containers having substantially the same dimensions of the container mouth and different uses. .. Further, by forming the side wall in a tapered and inclined shape, the stacking property of the lid body is enhanced, so that it is possible to save space during storage and transportation of the lid body. In addition, the lower wall of the side wall, which is tapered from the upper end side to the lower end side and is formed in a tapered shape, has elasticity, and the upper wall of the side wall is joined to the rising portion around the canopy to have a high-strength structure. Therefore, the holding property of the lid with respect to the container mouth is enhanced. In the lid of the present invention, the engaging portion provided on the lower wall having elasticity engages with the container opening portion, and the container opening portion is securely and firmly held and closed, so that hot coffee or the like is stored. Even if the pressure inside the container becomes high as in the case, or if the container containing the contents is accidentally dropped, there is no risk that the lid will easily come off from the container mouth, and the lid of a large container It is more effective as a body. Further, since the lower wall of the side wall provided with the engaging portion that engages with the container opening has elasticity, the container opening can be securely engaged and closed, and the lid can be easily removed. .. Further, the lid body of the present invention has a structure in which a rising portion is formed around the canopy and the rising portion is joined to the inner surface of the upper wall of the side wall. Since there is no gap in the portion, there is no risk of liquid beverage or the like seeping into such a gap. Since the lid of the present invention is less likely to be twisted and deformed as a whole as compared with the lid made of plastic molded product, when carrying a food storage container closed by the lid, like the lid made of plastic molded product. There is little risk that the lid will inadvertently twist and deform and come off.

本発明の蓋体の一実施形態の斜視図である。It is a perspective view of one Embodiment of the lid body of this invention. 図１のＩＩ－ＩＩ線に沿う縦断面図である。It is a vertical sectional view along the line II-II of FIG. 蓋体を容器に被せた状態の縦断面図である。It is a vertical cross-sectional view of a state in which a lid is put on a container. 蓋体を積み重ねた状態を示す縦断面図である。It is a vertical cross-sectional view which shows the state in which the lids are stacked. 蓋体の異なる実施形態の縦断面図である。It is a vertical sectional view of a different embodiment of a lid body. 蓋体の更に異なる実施形態の縦断面図である。It is a vertical sectional view of a further different embodiment of a lid. 蓋体の更に異なる実施形態の縦断面図である。It is a vertical sectional view of a further different embodiment of a lid. 蓋体の更に異なる実施形態の縦断面図である。It is a vertical sectional view of a further different embodiment of a lid. 蓋体の更に異なる実施形態の斜視図である。It is a perspective view of a further different embodiment of a lid. 図９の蓋体において蓋片を引き上げて飲み口を形成した状態の飲み口付近の断面図である。FIG. 9 is a cross-sectional view of the vicinity of a drinking spout in a state where a lid piece is pulled up to form a drinking spout in the lid body of FIG. 蓋体の更に異なる実施形態の斜視図である。It is a perspective view of a further different embodiment of a lid. 蓋体の更に異なる実施形態の縦断面図である。It is a vertical sectional view of a further different embodiment of a lid. 本発明の蓋体を製造する方法の一例を示す縦断面図である。It is a vertical sectional view which shows an example of the method of manufacturing the lid body of this invention. 蓋体を容器に取り付ける際の作用の説明図である。It is explanatory drawing of the operation when the lid body is attached to a container. 蓋体を容器から取り外す際の作用の説明図である。It is explanatory drawing of the action when removing a lid body from a container. 蓋体の更に異なる実施態様の縦断面図である。It is a vertical sectional view of a further different embodiment of a lid. 蓋体の更に異なる実施態様の縦断面図である。It is a vertical sectional view of a further different embodiment of a lid. 側壁形成用ブランク材の平面図である。It is a top view of the blank material for forming a side wall. 蓋体の異なる実施態様の縦断面図である。It is a vertical sectional view of a different embodiment of a lid. 側壁形成用ブランク材の異なる実施態様の平面図である。It is a top view of the different embodiment of the blank material for forming a side wall. 異なる実施態様の蓋体を製造工程の縦断面図である。It is a vertical sectional view of the manufacturing process of the lid body of a different embodiment. 側壁形成用ブランク材の更に異なる実施態様の平面図である。It is a top view of the further different embodiment of the blank material for forming a side wall. 蓋体の異なる実施態様の縦断面図である。It is a vertical sectional view of a different embodiment of a lid. 蓋体の更に異なる実施態様の縦断面図である。It is a vertical sectional view of a further different embodiment of a lid. 蓋体の更に異なる実施態様の縦断面図である。It is a vertical sectional view of a further different embodiment of a lid. 蓋体の更に異なる実施態様の縦断面図である。It is a vertical sectional view of a further different embodiment of a lid.

以下、本発明の蓋体について図面に基づき説明する。 Hereinafter, the lid of the present invention will be described with reference to the drawings.

図１、図２は本発明の蓋体１の一実施形態を示し、この蓋体１は、天蓋２と、該天蓋２の周囲を取り囲む側壁３とで形成されている。側壁３は紙系素材の両端部を囲繞状に接合して筒状に形成して構成され、側壁３は上端側から下端側に向けて先細り傾斜状に形成されている。
尚、側壁が上端側から下端側に向けて先細り形状に形成されているとは、側壁の外壁形状が上端側から下端側に向かって全体として先細り形状に形成されていることであり、側壁の外壁の一部に膨出部や突出部等が有っても、全体的に先細り形状になっていれば、上端側から下端側に向けて先細り傾斜状の側壁に包含される。
天蓋２と側壁３とは、天蓋２の周縁に曲げ形成された立ち上がり部４を、側壁３の上部壁５の内面側に接合して一体化されている。即ち、天蓋２を形成するための、円形状等のブランク材の周囲を曲げ形成して天蓋２の周縁に立ち上がり部４を形成し、この立ち上がり部を側壁の内面側に接合することで蓋体１が形成されている。側壁３の下部壁６には、図３に示すように、容器７の口部に設けられたカール部８と係合する形状に形成された、環状凹溝状の係合部９が形成されている。係合部９は、環状凹溝状に形成する場合に限らず、容器７のカール部８と係合することができれば、任意の形状に形成することができるが、側壁３の下部壁６の内周面を押圧プレスして環状凹溝状の係合部９を形成すると、矩形状や扇形状の紙系素材の両端部を接合して形成した側壁３の下部壁６に形成される係合部９における接合部の段差を小さくすることができ、蓋体１と容器７との間に隙間が形成され難く、蓋体１による密閉性が向上される。尚、図２に示した例では、押圧プレス等によって形成した環状凹溝状の係合部９の外側面（下部壁６の外側面）は膨出状に形成されているが、下部壁６の内面側に環状凹溝状の係合部９が形成され、下部壁６の外側面は膨出状に形成されていない場合であっても良い。側壁３の接合部における段差を小さくするためには、側壁３を形成するための矩形状や扇形状の紙系素材の両端部を接合する前に、当該両端部付近を端縁部方向（側壁３の周方向）に向かって厚みが漸次薄くなるように圧縮した後、両端部を接合して側壁３を形成するようにしても良い。 1 and 2 show an embodiment of the lid 1 of the present invention, which is formed by a canopy 2 and a side wall 3 surrounding the canopy 2. The side wall 3 is formed by joining both ends of a paper-based material in a cylindrical shape to form a cylinder, and the side wall 3 is formed in a tapered shape from the upper end side to the lower end side.
The fact that the side wall is formed in a tapered shape from the upper end side to the lower end side means that the outer wall shape of the side wall is formed in a tapered shape as a whole from the upper end side to the lower end side. Even if a part of the outer wall has a bulging portion, a protruding portion, or the like, if it has a tapered shape as a whole, it is included in the side wall having a tapered shape from the upper end side to the lower end side.
The canopy 2 and the side wall 3 are integrated by joining a rising portion 4 bent and formed on the peripheral edge of the canopy 2 to the inner surface side of the upper wall 5 of the side wall 3. That is, a rising portion 4 is formed on the peripheral edge of the canopy 2 by bending around a blank material having a circular shape or the like for forming the canopy 2, and the rising portion is joined to the inner surface side of the side wall to form the lid. 1 is formed. As shown in FIG. 3, the lower wall 6 of the side wall 3 is formed with an annular groove-shaped engaging portion 9 formed in a shape that engages with the curl portion 8 provided at the mouth portion of the container 7. ing. The engaging portion 9 is not limited to the case of being formed in the shape of an annular groove, and can be formed in any shape as long as it can be engaged with the curl portion 8 of the container 7, but the lower wall 6 of the side wall 3 may be formed. When the inner peripheral surface is pressed and pressed to form the annular concave groove-shaped engaging portion 9, the engagement portion formed on the lower wall 6 of the side wall 3 formed by joining both ends of the rectangular or fan-shaped paper-based material. The step of the joint portion in the joint portion 9 can be reduced, a gap is less likely to be formed between the lid body 1 and the container 7, and the airtightness by the lid body 1 is improved. In the example shown in FIG. 2, the outer surface (outer surface of the lower wall 6) of the annular concave groove-shaped engaging portion 9 formed by a pressing press or the like is formed in a bulging shape, but the lower wall 6 is formed. An annular groove-shaped engaging portion 9 may be formed on the inner surface side of the lower wall 6, and the outer surface of the lower wall 6 may not be formed in a bulging shape. In order to reduce the step at the joint of the side wall 3, before joining both ends of the rectangular or fan-shaped paper material for forming the side wall 3, the vicinity of both ends is directed toward the edge (side wall). After compressing so that the thickness gradually decreases toward the circumferential direction of 3), both ends may be joined to form the side wall 3.

本実施形態の蓋体１は、側壁３を、図１８に示すような上端側の弧形状部３３の長さが、下端側の弧形状部３４の長さよりも長い環状扇形（円錐台の側壁部の展開形状）のブランク材３５の、両側端部３６、３７が、側壁３の周方向に向かい合うように両側端部３６、３７を接合して環状に形成して構成しており、側壁３は側面が上端側から下端側に向かって（容器７の口部方向に向かって）全体的に先細り傾斜状に（図２の矢印ａ方向に全体的に傾斜状に）形成され、係合部９の下端側内寸法ｄ２が、係合部９の上端側内寸法ｄ１より小さくなるように形成されている。 The lid 1 of the present embodiment has a side wall 3 having an annular fan shape (side wall of a truncated cone) in which the length of the arc-shaped portion 33 on the upper end side is longer than the length of the arc-shaped portion 34 on the lower end side as shown in FIG. The side wall 3 The side surface is formed in a tapered shape (overwardly inclined in the direction of arrow a in FIG. 2) from the upper end side toward the lower end side (toward the mouth portion of the container 7), and the engaging portion is formed. The lower end side inner dimension d2 of 9 is formed to be smaller than the upper end side inner dimension d1 of the engaging portion 9.

本実施形態の蓋体１は、側壁３が傾斜状に形成されているためスタッキング性に優れ、図４に示すように複数の蓋体１を上下に積み重ね合わせることで、少ないスペースでの保管、運搬が可能となり、保管、運搬コストの低減化を図ることができる。側壁３は側面が傾斜状に形成されている場合に限らず、側壁３の一部分、例えば上端側又は下端側だけが傾斜状に形成されていても良く、側壁３の上端側と下端側とで異なる傾斜角に形成されていても良い。側壁３は、図示したごとく容器７の側壁７ａの傾斜角に沿うように、容器７の口部方向に先細り状に傾斜した筒状とすることで、蓋体１のスタッキング性が向上するとともに、蓋体１の容器７に対する閉止性、密着性がより優れたものとなる。特に図２１に示すように、上部壁５側が下部壁６側よりも傾斜角が広がるような形状の金型１４を用い、金型１３で上部壁５の内側から上壁部５を押圧したり、上部壁５と下部壁６とが異なる傾斜となるような、図２２に示す形状の上部壁形成部５ａと下部壁形成部６ａとを有するブランク材３５を用いて側壁３を形成する等により、上部壁５の傾斜角が下部壁６の傾斜角よりも大きくなるように形成したり、あるいは図２３に示すように上部壁５と下部壁６との境界部に、下部壁６側の寸法が上部壁５側の寸法よりも小さくなるような段差３８を形成すると、よりスタッキング性が向上する。 The lid 1 of the present embodiment is excellent in stacking property because the side wall 3 is formed in an inclined shape, and as shown in FIG. 4, by stacking a plurality of lids 1 vertically, it can be stored in a small space. It can be transported, and storage and transportation costs can be reduced. The side wall 3 is not limited to the case where the side surface is formed in an inclined shape, and only a part of the side wall 3, for example, the upper end side or the lower end side may be formed in an inclined shape, and the upper end side and the lower end side of the side wall 3 may be formed. It may be formed at different inclination angles. As shown in the drawing, the side wall 3 has a tubular shape that is tapered in the direction of the mouth of the container 7 so as to follow the inclination angle of the side wall 7a of the container 7, thereby improving the stacking property of the lid 1 and improving the stacking property. The closure and adhesion of the lid 1 to the container 7 are more excellent. In particular, as shown in FIG. 21, a mold 14 having a shape such that the upper wall 5 side has a wider inclination angle than the lower wall 6 side is used, and the upper wall portion 5 is pressed from the inside of the upper wall 5 by the mold 13. The side wall 3 is formed by using a blank material 35 having an upper wall forming portion 5a and a lower wall forming portion 6a having a shape shown in FIG. 22 so that the upper wall 5 and the lower wall 6 have different inclinations. , The inclination angle of the upper wall 5 is formed to be larger than the inclination angle of the lower wall 6, or as shown in FIG. 23, the dimension of the lower wall 6 side is formed at the boundary between the upper wall 5 and the lower wall 6. If a step 38 is formed such that the size is smaller than the dimension on the upper wall 5 side, the stacking property is further improved.

本発明の蓋体１における、筒状の側壁３を形成する紙系部材の両端部の接合、天蓋２と側壁３との接合は、公知の接合方法により接合一体化することができる。接合方法としては、通常の接着剤やホットメルト接着剤、二液型接着剤、ヒートシール、超音波接合、高周波接合等の方法が挙げられるが、天蓋２と側壁３の接合面とをヒートシール性を有する素材で構成して、ヒートシールによる接合することが製造効率上好ましい。 In the lid 1 of the present invention, the joining of both ends of the paper-based member forming the tubular side wall 3 and the joining of the canopy 2 and the side wall 3 can be joined and integrated by a known joining method. Examples of the bonding method include ordinary adhesives, hot melt adhesives, two-component adhesives, heat seals, ultrasonic bonding, high frequency bonding, etc., and heat seal the joint surface between the canopy 2 and the side wall 3. It is preferable in terms of manufacturing efficiency that the material is made of a material having a property and is bonded by a heat seal.

図３は蓋体１を容器７に被せて容器７の口部を封止した状態を示す。本実施形態の蓋体１は、係合部９が容器７のカール部８に係合するように、側壁３の下部壁６の内壁側に囲繞状の凹溝状に形成されている。本実施形態の蓋体１は、係合部９を容器７のカール部８に係合させた際に、下部壁６の下端部３０が容器７の側壁７ａと接しない構造に形成されている。本発明の蓋体１は、容器７を高い密閉性で閉蓋できるともに、下部壁６が、下部壁６の内側方向及び外側方向への弾力性を有するために容器７からの取り外しも容易に行うことができるが、容器７に取り付けた際に、下部壁６の下端部３０が容器７の側壁７ａと接しない構造とすることで、容器７から蓋体１を取り外す際に、下部壁６の下端部３０等に指等をかけて下部壁６を引き上げることにより（図１５Ａの矢印方向）、容器７の口部のカール部８と蓋体１の係合部９との係合が外れ、蓋体１を上方に引き上げることで容器７から蓋体１を更に容易に取り外すことができる（図１５Ｂの矢印方向）。本発明の蓋体１は、紙系素材を囲繞状にして形成された側壁３の下部壁６に、容器７の口部と係合する係合部９を形成した構成を有している。また、係合部９が設けられている側壁３の下部壁６は、側壁３の下部壁６を折り返して天蓋２と接合した場合に比べて弾力性に優れている。このため、蓋体１の係合部９の径を、容器７のカール部８の外径よりも小さめに設計しても、蓋体１を容器７に確実に係合させることができ、係合部９の径を容器口部（カール部８）の外径より小さめに設計することで、容器７内にコーヒー等の液体製品、特に熱い液体製品等を収納して容器内圧力が高まった場合でも、蓋体１が容易に外れる虞がなく、高い密閉性を維持した状態で容器７を閉蓋することができ、側壁３が上端側から下端側に全体的に先細り傾斜状に形成されていることと相まって、高い密閉性をもって閉蓋することができる。また図５、図６、図１６等に示すように、必要に応じて下部壁６の下端縁部に切り込み３９を設けると、容器７の口部への密着性を高めた構造の蓋体（例えば係合部９の径をカール部８の外径よりも、より小さくした構造の蓋体等）であっても、蓋体１の容器７の口部への取り付け、取り外しも容易に行うことができる。下部壁６の下端縁部の一部は、図１９に示すように下部壁６の内側に折り返されていても良い。この場合、折り返し部４０の端縁４０ａが、蓋体１を容器に取り付けた際に、容器のカール部８等の下側に位置するように構成すると、蓋体１の容器への嵌合性が向上する。また、折り返し部４０に切れ込み３９を設けることで、容器７の口部への取り付け、取り外しを容易に行うことができる。 FIG. 3 shows a state in which the lid 1 is put on the container 7 and the mouth portion of the container 7 is sealed. The lid 1 of the present embodiment is formed in the shape of a concave groove on the inner wall side of the lower wall 6 of the side wall 3 so that the engaging portion 9 engages with the curl portion 8 of the container 7. The lid 1 of the present embodiment is formed in a structure in which the lower end portion 30 of the lower wall 6 does not come into contact with the side wall 7a of the container 7 when the engaging portion 9 is engaged with the curl portion 8 of the container 7. .. The lid 1 of the present invention can close the container 7 with high airtightness, and the lower wall 6 has elasticity in the inner and outer directions of the lower wall 6, so that the container 7 can be easily removed from the container 7. However, by adopting a structure in which the lower end portion 30 of the lower wall 6 does not come into contact with the side wall 7a of the container 7 when attached to the container 7, the lower wall 6 is used when the lid 1 is removed from the container 7. By pulling up the lower wall 6 by putting a finger or the like on the lower end portion 30 and the like (in the direction of the arrow in FIG. 15A), the curl portion 8 at the mouth of the container 7 and the engaging portion 9 of the lid 1 are disengaged. The lid 1 can be more easily removed from the container 7 by pulling the lid 1 upward (in the direction of the arrow in FIG. 15B). The lid 1 of the present invention has a structure in which an engaging portion 9 that engages with the mouth portion of the container 7 is formed on a lower wall 6 of a side wall 3 formed by surrounding a paper-based material. Further, the lower wall 6 of the side wall 3 provided with the engaging portion 9 is excellent in elasticity as compared with the case where the lower wall 6 of the side wall 3 is folded back and joined to the canopy 2. Therefore, even if the diameter of the engaging portion 9 of the lid 1 is designed to be smaller than the outer diameter of the curl portion 8 of the container 7, the lid 1 can be reliably engaged with the container 7 and engaged. By designing the diameter of the joint portion 9 to be smaller than the outer diameter of the container mouth portion (curl portion 8), liquid products such as coffee, especially hot liquid products, etc. are stored in the container 7, and the pressure inside the container is increased. Even in this case, there is no possibility that the lid 1 will be easily removed, the container 7 can be closed while maintaining a high degree of airtightness, and the side wall 3 is formed in a tapered shape as a whole from the upper end side to the lower end side. Coupled with the fact that the lid can be closed with a high degree of airtightness. Further, as shown in FIGS. 5, 6, 16 and the like, if a notch 39 is provided at the lower end edge of the lower wall 6 as needed, a lid having a structure that enhances the adhesion to the mouth of the container 7 ( For example, even if the diameter of the engaging portion 9 is smaller than the outer diameter of the curl portion 8), the lid 1 can be easily attached to and removed from the mouth of the container 7. Can be done. A part of the lower end edge of the lower wall 6 may be folded inside the lower wall 6 as shown in FIG. In this case, if the end edge 40a of the folded-back portion 40 is configured to be located below the curl portion 8 or the like of the container when the lid 1 is attached to the container, the fitability of the lid 1 to the container is set. Is improved. Further, by providing the notch 39 in the folded-back portion 40, the container 7 can be easily attached to and detached from the mouth portion.

また本発明の蓋体１は側壁３の下部壁６が弾力性を有することにより、容器７の口部の寸法に誤差があっても確実に容器７の口部を確実に閉止して高い密閉性を保持することができる。また側壁３を上端側から下端側に先細り状に傾斜し、この側壁３の上部壁５内面に、拡開傾斜状に立ち上がり形成した立ち上がり部４を接合して天蓋２と側壁３とが接合一体化されていることで、天蓋２の立ち上がり部４と、側壁３の上部壁５との接合強度が高まり、蓋体１に負荷力が加わった時でも、蓋体１に捩れ等が生じ難くなり、係合部９と容器７のカール部８との係合が外れる虞がなく、熱い飲料等を収納した際に密閉した容器７の内圧が高まっている場合でも、蓋体１が外れる虞が少ない。天蓋２の大きさが大きい蓋体１ほど、蓋体１への負荷によって天蓋２が捩れ易くなるが、側壁３を上端側から下端側に先細り状に傾斜形成し、この側壁３の上部壁５内面に、拡開傾斜状に立ち上がり形成した立ち上がり部４を接合した構成とすることにより、大型の蓋体の場合でも、蓋体１に加わる負荷によって蓋体１が容器７から外れる虞が少なくなる。本発明の蓋体１は、天蓋２の立ち上がり部４と側壁３の上部壁５との接合部分の下接合点２９の間の大きさ（円形の天蓋２の場合、下接合点２９の径）が、係合部９の下端部３０の間の大きさ（円形の天蓋２の場合、係合部９の下端部の内径）より大きく形成されることで、確実な閉蓋状態を保持することができる。本実施形態の蓋体１は、天蓋２の上側に、側壁３の上部壁５と天蓋２の立ち上がり部４との接合部が突出壁１０として形成されており、この突出壁１０は、容器７の内容物がコーヒー等の飲料の場合、飲料を飲む際の口当て部として利用することができるとともに、飲料の溢れ防止壁として利用することができる。なお、本発明の蓋体１を飲料用容器の蓋として用いる場合、天蓋２に飲み口２４が設けられていても良い。また容器７は、コーヒーカップやカップヌードルの容器のように側壁７ａが傾斜した形状の容器に限らず、ナッツ缶等の円筒状容器であっても良い。本発明の蓋体１は、紙容器、プラスチック容器、発泡プラスチック容器、金属缶等の種々の容器に使用することができ、液体物を収納する容器に限らず、乾燥した食品等の収納容器や、非食品容器等の蓋体としても用いることができる。本発明の蓋体１は、コーヒーカップやカップヌードル、ナッツ缶等の容器の他、スープ、ヨーグルト、アイスクリーム、各種惣菜や弁当の容器等の蓋体として用いることができるが、飲食品用の容器に限らずあらゆる容器の蓋体として用いることができる。 Further, in the lid body 1 of the present invention, since the lower wall 6 of the side wall 3 has elasticity, even if there is an error in the size of the mouth portion of the container 7, the mouth portion of the container 7 is surely closed and highly sealed. Can retain sex. Further, the side wall 3 is inclined in a tapered shape from the upper end side to the lower end side, and a rising portion 4 which rises and is formed in an expanded inclined shape is joined to the inner surface of the upper wall 5 of the side wall 3, and the canopy 2 and the side wall 3 are joined and integrated. As a result, the joint strength between the rising portion 4 of the canopy 2 and the upper wall 5 of the side wall 3 is increased, and even when a load force is applied to the lid 1, the lid 1 is less likely to be twisted or the like. There is no possibility that the engagement portion 9 and the curl portion 8 of the container 7 will be disengaged, and even if the internal pressure of the sealed container 7 is increased when hot beverages or the like are stored, the lid 1 may be disengaged. Few. The larger the size of the canopy 2, the easier it is for the canopy 2 to be twisted due to the load on the lid 1, but the side wall 3 is formed to be inclined in a tapered shape from the upper end side to the lower end side, and the upper wall 5 of the side wall 3 is formed. By joining the rising portion 4 which is formed to rise in an expanded inclined shape to the inner surface, there is less possibility that the lid 1 will come off from the container 7 due to the load applied to the lid 1 even in the case of a large lid. .. The lid 1 of the present invention has a size between the lower joint point 29 of the joint portion between the rising portion 4 of the canopy 2 and the upper wall 5 of the side wall 3 (in the case of the circular canopy 2, the diameter of the lower joint point 29). Is formed to be larger than the size between the lower ends 30 of the engaging portion 9 (in the case of the circular canopy 2, the inner diameter of the lower end of the engaging portion 9), so that a reliable closed state is maintained. Can be done. In the lid 1 of the present embodiment, a joint portion between the upper wall 5 of the side wall 3 and the rising portion 4 of the canopy 2 is formed as a protruding wall 10 on the upper side of the canopy 2, and the protruding wall 10 is a container 7. When the content of the above is a beverage such as coffee, it can be used as a mouthpiece when drinking the beverage and also as a wall for preventing the overflow of the beverage. When the lid 1 of the present invention is used as the lid of a beverage container, the canopy 2 may be provided with a drinking spout 24. Further, the container 7 is not limited to a container having an inclined side wall 7a such as a coffee cup or a cup noodle container, but may be a cylindrical container such as a nut can. The lid 1 of the present invention can be used for various containers such as paper containers, plastic containers, foamed plastic containers, metal cans, etc., and is not limited to containers for storing liquids, but also storage containers for dried foods and the like. It can also be used as a lid for non-food containers and the like. The lid 1 of the present invention can be used as a lid for containers such as coffee cups, cup noodles and nut cans, as well as containers for soups, yogurt, ice cream, various side dishes and lunch boxes, but for food and drink. It can be used as a lid for any container, not limited to the container.

側壁３が上端側から下端側に先細り傾斜状に形成されている本実施形態の蓋体１は、蓋体１の側壁３の傾斜角：αと、容器７の側壁７ａの傾斜角：βは、同じであっても異なっていても良く、異なる場合には側壁３の傾斜角：αが、容器７の側壁７ａの傾斜角：βより大きくても小さくても良いが、傾斜角：αが傾斜角：βより小さい場合（傾斜が大きい場合）には、蓋体１の容器７への嵌合力がより高くなり、より密閉性が高められる。蓋体１の側壁３の傾斜角：αの、容器７の側壁７ａの傾斜角：βに対する大きさは、蓋体１の密閉性を高めるために、容器７の大きさ（蓋体１の大きさ）等の違いに応じて任意に変更することができる。また多角形状の容器のような非円形容器の場合には、蓋体１がはまり込む容器部位の形状の違いに応じて蓋体１の側壁３の傾斜角：αを変えることにより、容器の部位の違いによる密閉性が変化することを防止することもできる。 In the lid 1 of the present embodiment in which the side wall 3 is formed in a tapered shape from the upper end side to the lower end side, the inclination angle of the side wall 3 of the lid 1 is α and the inclination angle of the side wall 7a of the container 7 is β. , It may be the same or different, and if they are different, the inclination angle of the side wall 3: α may be larger or smaller than the inclination angle: β of the side wall 7a of the container 7, but the inclination angle: α is. Tilt angle: When it is smaller than β (when the tilt is large), the fitting force of the lid 1 to the container 7 becomes higher, and the airtightness is further improved. The size of the inclination angle of the side wall 3 of the lid 1 with respect to the inclination angle of α and the inclination angle of the side wall 7a of the container 7 with respect to β is the size of the container 7 (the size of the lid 1) in order to enhance the airtightness of the lid 1. It can be changed arbitrarily according to the difference such as). Further, in the case of a non-circular container such as a polygonal container, the portion of the container is formed by changing the inclination angle: α of the side wall 3 of the lid 1 according to the difference in the shape of the container portion into which the lid 1 fits. It is also possible to prevent the airtightness from changing due to the difference between the two.

上記実施形態の蓋体１は、側壁３の上部壁５と、天蓋２の立ち上がり部４とが同一の高さとなるように形成されているが、側壁３の上部壁５と、天蓋２の立ち上がり部４とは、高さは等しくなるように形成されている場合に限らず、側壁３の上部壁５、天蓋２の立ち上がり部４のいずれか一方が他方よりも短く形成されていても良い。 The lid 1 of the above embodiment is formed so that the upper wall 5 of the side wall 3 and the rising portion 4 of the canopy 2 have the same height, but the upper wall 5 of the side wall 3 and the rising portion 2 of the canopy 2 are formed. The portion 4 is not limited to the case where the heights are equal to each other, and one of the upper wall 5 of the side wall 3 and the rising portion 4 of the canopy 2 may be formed shorter than the other.

本発明の蓋体１の側壁３を構成する紙系素材としては、繊維原料のスラリーを網上に抄き取り、乾燥ないし押圧乾燥、抄紙してシート状にして得られる、いわゆる紙や、パルプ系繊維等からなる原料シートを粉砕機で粉砕して得られる粉砕パルプ等の開繊繊維原料を空気流によって積繊し、積繊体の繊維相互をバインダーで固定して得られるいわゆるエアレイドシート等や、これらを複数枚積層したもの等が挙げられる。紙系素材としては、パルプだけからなるもののほか、非パルプ系の天然繊維や合成繊維、再生繊維等の繊維を含むものであっても良いが、パルプを５０質量％以上含むことが好ましく、７０質量％以上含むものがより好ましく、更に８０質量％以上含むものが好ましいが、特にパルプ１００質量％からなるものが好ましい。紙系素材は、合成樹脂や天然樹脂のフィルムや不織布、木箔等の木質系素材等、さらにはアルミ箔等の素材との複合材料も用いることができるが、複合材料とする場合、複合材料全体としてパルプを５０質量％以上含有することが好ましく、特に８０質量％以上のパルプを含むものが好ましい。パルプ含有分の高いほど、紙系素材が生分解されやすくなるため好ましい。また、透明な紙系素材であるセルロースナノファイバー（セルロースミクロフィブリル）から形成された透明な紙を用いることもできる。 As the paper-based material constituting the side wall 3 of the lid 1 of the present invention, so-called paper or pulp obtained by drawing a slurry of a fiber raw material on a net, drying or pressing and drying, and making a sheet into a sheet is obtained. A so-called air-laid sheet obtained by stacking spread fiber raw materials such as crushed pulp obtained by crushing a raw material sheet made of system fibers with a crusher by an air flow and fixing the fibers of the fiber stack with a binder. Or, a product obtained by laminating a plurality of these sheets may be mentioned. The paper-based material may be composed of only pulp or may contain fibers such as non-pulp-based natural fibers, synthetic fibers, and recycled fibers, but it is preferably contained in an amount of 50% by mass or more of pulp. Those containing 100% by mass or more are more preferable, and those containing 80% by mass or more are preferable, and those containing 100% by mass of pulp are particularly preferable. As the paper-based material, a synthetic resin or natural resin film, a non-woven fabric, a wood-based material such as wood foil, or a composite material with a material such as aluminum foil can be used. It is preferable that the pulp is contained in an amount of 50% by mass or more as a whole, and it is particularly preferable that the pulp is contained in an amount of 80% by mass or more. The higher the pulp content, the easier it is for the paper-based material to be biodegraded, which is preferable. Further, transparent paper formed from cellulose nanofibers (cellulose microfibrils), which is a transparent paper-based material, can also be used.

パルプとしては、木材パルプ、非木材パルプ、古紙パルプ等から得られるものが挙げられる。パルプは、赤松、トド松、エゾ松、ダグラスファー、ヘムロック、スプルース等の針葉樹パルプ、ブナ、ナラ、カバ、ユーカリ、ポプラ、アルダー等の広葉樹パルプ、針葉樹パルプと広葉樹パルプの混合物等の木材パルプ、ケナフ、バガスパルプ、タケパルプ、シリアルパルプ、ワラパルプ、アバカパルプ、木綿パルプ等の非木材パルプ、古紙パルプ等を用いることができる。針葉樹パルプは広葉樹パルプに比べて繊維長が長いため、針葉樹パルプ等の繊維長の長いパルプを用いた紙材料は、繊維相互の絡み具合が高まり、また針葉樹パルプ等を用いた原料シートを粉砕した粉砕パルプも、広葉樹パルプからなる原料シートを粉砕した粉砕パルプに比べて繊維長が長いため、繊維相互の絡み合いにより紙系素材の強度が向上する。 Examples of the pulp include those obtained from wood pulp, non-wood pulp, used paper pulp and the like. The pulp is coniferous pulp such as red pine, todo pine, ezo pine, douglas fur, hemlock, spruce, broadleaf pulp such as beech, nara, hippo, eucalyptus, poplar, alder, wood pulp such as a mixture of conifer pulp and broadleaf pulp, and kenaf. , Bagas pulp, bamboo pulp, serial pulp, wara pulp, abaca pulp, non-wood pulp such as cotton pulp, used paper pulp and the like can be used. Since coniferous pulp has a longer fiber length than broadleaf pulp, paper materials using long fiber length pulp such as coniferous pulp have a higher degree of entanglement between fibers, and a raw material sheet using coniferous pulp or the like is crushed. Since the crushed pulp also has a longer fiber length than the crushed pulp obtained by crushing a raw material sheet made of broad-leaved tree pulp, the strength of the paper-based material is improved by the entanglement of the fibers.

紙系素材は耐水性を有することが好ましく、耐水紙等のあらかじめ耐水性が付与された素材を用いたり、少なくとも紙系素材の容器側に位置する表面にコート層を設けたものを用いても良い。コート層は、フィルムを貼着したり、塗工剤を塗布することにより設けることができる。コート層は、ポリ塩化ビニル、ポリ塩化ビニリデン、ポリウレタン、ポリエチレンテレフタレート、ポリエチレンやポリプロピレン等のオレフィン系樹脂、ポリビニルアルコール、アクリル系樹脂であるポリアクリル酸、ポリメタクリル酸、アクリロニトリル・ブタジエン・スチレン共重合体等、ポリエチレンテレフタレート、セロファン、ナイロン、エチレン－ビニルアルコール共重合体、ポリメチルペンテン、ポリ酢酸ビニル、ポリ乳酸、ポリカプロラクトン、ポリヒドロキシアルカノエート、デンプン系樹脂等により形成することができ、２種以上を併用して形成しても良い。コート層は、ポリ乳酸、ポリカプロラクトン、ポリヒドロキシアルカノエート、デンプン系樹脂等の生分解性樹脂で形成すると、生分解性が向上するため好ましい。コート層は、フィルムを貼着して形成する場合に比べ、塗工剤を塗布して形成した場合が、リサイクル性に優れるため好ましい。 The paper-based material is preferably water-resistant, and even if a water-resistant material such as water-resistant paper is used, or at least a paper-based material having a coat layer on the surface located on the container side is used. good. The coat layer can be provided by attaching a film or applying a coating agent. The coat layer is made of polyvinyl chloride, polyvinylidene chloride, polyurethane, polyethylene terephthalate, olefin resins such as polyethylene and polypropylene, polyvinyl alcohol, polyacrylic acid which is an acrylic resin, polymethacrylic acid, and acrylonitrile-butadiene-styrene copolymer. Etc., can be formed of polyethylene terephthalate, cellophane, nylon, ethylene-vinyl alcohol copolymer, polymethylpentene, polyvinyl acetate, polylactic acid, polycaprolactone, polyhydroxyalkanoate, starch-based resin, etc. May be formed in combination with each other. It is preferable to form the coat layer with a biodegradable resin such as polylactic acid, polycaprolactone, polyhydroxyalkanoate, or starch-based resin because the biodegradability is improved. The coat layer is preferably formed by applying a coating agent as compared with the case of forming by pasting a film because it is excellent in recyclability.

本発明の蓋体１における天蓋２は、側壁３と同様の紙系素材で構成することができるが、紙系素材の他に、フィルム乃至シート材で構成することができる。天蓋２をフィルムやシート材で構成すると、天蓋２が紙系素材よりなる場合よりも屈曲性が高いため、蓋体１の容器７へのはめ込みがより容易となる。また透明なフィルムやシート材で構成すると、容器７に取り付けた際に、容器７内の収納物を容易に目視確認することができる。フィルムやシート材としては、例えばポリ塩化ビニル、ポリ塩化ビニリデン、ポリウレタン、ポリエチレンテレフタレート（ＰＥＴ）、ポリエチレンやポリプロピレン等のオレフィン系樹脂、ポリビニルアルコール、アクリル系樹脂であるポリアクリル酸、ポリメタクリル酸、アクリロニトリル・ブタジエン・スチレン共重合体等、ポリエチレンテレフタレート、セロファン、ナイロン、エチレン－ビニルアルコール共重合体、ポリメチルペンテン、ポリ酢酸ビニル、ポリ乳酸、ポリカプロラクトン、ポリヒドロキシアルカノエート、デンプン系樹脂、グラシン紙、セロファン紙、硝酸紙、パラフィン紙等や、これらの複合体等を用いることができるが、ポリ酢酸ビニル、ポリ乳酸、ポリカプロラクトン、ポリヒドロキシアルカノエート、デンプン系樹脂、グラシン紙、セロファン紙、硝酸紙、パラフィン紙等の生分解性を有するものが好ましい。また紙等に蒸着等によりアルミニウム層を形成したものや、更に紙等の表面にアルミニウム層を設け、更にその片面又は両面にポリエチレン、ポリプロピレン等のラミネート層やコート層を設けた積層体も用いることもできる。天蓋２をフィルムやシート材で構成する場合、ＰＥＴ等のヒートシールが困難な材質を用いる場合、側壁３と接合する面に、例えば、ポリエチレン、ポリプロピレン（ＯＰＰ、ＣＰＰ等）がコートされていると、ヒートシールによる接合を容易に行うことができる。天蓋２をフィルムやシート材で形成する場合、フィルムやシート材は、着色ないし非着色の透明や半透明のものであっても、不透明のものであっても良い。また、透明な紙系素材であるセルロースナノファイバー（セルロースミクロフィブリル）から形成された透明な紙を用いることもできる。 The canopy 2 in the lid 1 of the present invention can be made of the same paper-based material as the side wall 3, but can be made of a film or a sheet material in addition to the paper-based material. When the canopy 2 is made of a film or a sheet material, the canopy 2 has higher flexibility than the case where the canopy 2 is made of a paper-based material, so that the lid 1 can be easily fitted into the container 7. Further, if it is made of a transparent film or sheet material, when it is attached to the container 7, the stored items in the container 7 can be easily visually confirmed. Examples of film and sheet materials include polyvinyl chloride, polyvinylidene chloride, polyurethane, polyethylene terephthalate (PET), olefin resins such as polyethylene and polypropylene, polyvinyl alcohol, and acrylic resins such as polyacrylic acid, polymethacrylic acid, and acrylonitrile.・ Polyethylene terephthalate, cellophane, nylon, ethylene-vinyl alcohol copolymer, polymethylpentene, polyvinyl acetate, polylactic acid, polycaprolactone, polyhydroxyalkanoate, starch resin, glassin paper, etc. Cellophane paper, nitrate paper, paraffin paper, etc., and composites thereof can be used, but polyvinyl acetate, polylactic acid, polycaprolactone, polyhydroxyalkanoate, starch-based resin, glassin paper, cellophane paper, nitrate paper, etc. can be used. , Paraffin paper or the like having biodegradability is preferable. In addition, a laminate in which an aluminum layer is formed on paper or the like by vapor deposition or the like, or a laminate in which an aluminum layer is further provided on the surface of paper or the like and a laminate layer or coat layer such as polyethylene or polypropylene is further provided on one or both sides thereof is also used. You can also. When the canopy 2 is made of a film or sheet material, when a material such as PET that is difficult to heat seal is used, for example, polyethylene or polypropylene (OPP, CPP, etc.) is coated on the surface to be joined to the side wall 3. , Can be easily joined by heat sealing. When the canopy 2 is formed of a film or sheet material, the film or sheet material may be colored or non-colored transparent or translucent, or opaque. Further, transparent paper formed from cellulose nanofibers (cellulose microfibrils), which is a transparent paper-based material, can also be used.

本発明の蓋体１は、天蓋２を紙系素材で構成する場合も、フィルムやシート材で構成する場合も、天蓋２の容器７の口部と接する側がヒートシール性を有する素材で構成されている場合には、天蓋２を容器７の口部（図３に示す態様では容器７のカール部８）とヒートシールによって接合しておいても良く、使用時にシールを外しながら蓋体１を容器７から取り外すようにしても良い。このようにすると、容器７の内容物を使用するまで、外気から遮断することが可能となる。天蓋２をフィルムやシート材で構成する場合、耐通気性や耐透湿性を有する材質を用いると、外気に対する遮断性が高まり好ましい。蓋体１に用いる紙系素材としては、目付量１５０～４００ｇ／ｍ２程度のものが用いられるが、１６０～３６０ｇ／ｍ２のものがより好ましく、１７０～３５０ｇ／ｍ２のものが更に好ましい。 The lid 1 of the present invention is made of a material having a heat-sealing property on the side of the canopy 2 in contact with the mouth of the container 7, regardless of whether the canopy 2 is made of a paper-based material or a film or sheet material. If this is the case, the canopy 2 may be joined to the mouth of the container 7 (curl portion 8 of the container 7 in the embodiment shown in FIG. 3) by a heat seal, and the lid 1 may be removed while removing the seal during use. It may be removed from the container 7. By doing so, it is possible to shield from the outside air until the contents of the container 7 are used. When the canopy 2 is made of a film or a sheet material, it is preferable to use a material having air permeability resistance and moisture permeability resistance because the barrier property against the outside air is increased. As the paper-based material used for the lid 1, a material having a basis weight of about 150 to 400 g / m 2 is used, but a material having a basis weight of 160 to 360 g / m 2 is more preferable, and a paper material having a basis weight of 170 to 350 g / m 2 is further preferable. ..

本発明の蓋体１により、口部にカール部８を有する容器７を閉蓋する場合、まず、図１４Ａに示すように蓋体１の一端側の係合部９を、容器７のカール部８にはめ込み、次いで、図１４Ｂに示すように、蓋体１の反対側に向けて係合部９を順次、カール部８にはめ込んで行き、天蓋２を反らせるようにして、蓋体１の他端側の係合部９を容器７のカール部８にはめ込むことで、容器７に蓋体１をはめ込んで閉蓋することができる。本発明の蓋体１は全体としての撓み性を有し、かつ側壁３の下部壁６は肉厚方向に弾力性を有しているため、容器７の口部の外寸法よりも、下部壁６の下端部の内寸法が小さい場合でも、容器７に蓋体１をはめ込むことができ、容器口部（カール部８）と蓋体１の下部壁内面及び天蓋下面側とが密着して高い密閉性をもって確実に容器７を閉蓋することができる。
本発明の蓋体１は、カール部を有する容器に限らず、容器口部に嵌め込んで高い密閉性を維持することができる。 When closing the container 7 having the curl portion 8 in the mouth portion by the lid body 1 of the present invention, first, as shown in FIG. 14A, the engaging portion 9 on one end side of the lid body 1 is subjected to the curl portion of the container 7. Then, as shown in FIG. 14B, the engaging portion 9 is sequentially fitted into the curl portion 8 toward the opposite side of the lid 1, and the canopy 2 is warped so that the other of the lid 1 is fitted. By fitting the engaging portion 9 on the end side into the curl portion 8 of the container 7, the lid 1 can be fitted into the container 7 and closed. Since the lid 1 of the present invention has flexibility as a whole and the lower wall 6 of the side wall 3 has elasticity in the wall thickness direction, the lower wall is larger than the outer dimensions of the mouth of the container 7. Even if the inner dimension of the lower end portion of 6 is small, the lid 1 can be fitted into the container 7, and the container mouth portion (curl portion 8) and the inner surface of the lower wall of the lid 1 and the lower surface side of the canopy are in close contact with each other and are high. The container 7 can be securely closed with airtightness.
The lid 1 of the present invention is not limited to a container having a curled portion, and can be fitted into a container mouth portion to maintain high airtightness.

（他の実施形態）
図５は本発明の蓋体１の異なる実施形態を示し、この実施形態の蓋体１は、側壁３の上部壁５を内側に折り曲げて天蓋２の立ち上がり部４を包み込むように折り曲げ部１１を形成した状態を示す。また図６は天蓋２の立ち上がり部４の上端部を内側に折り曲げた折り曲げ部１２を形成した状態を示す。図５、図６に示す折り曲げ部１１、１２を設けて突出壁１０の上端縁にアール部１６が形成されるようにすると、容器７内の飲料を飲む際に、突出壁１０に口を当てた際の口当たり感を向上することができる。折り曲げ部１１、１２は折り曲げた内面側が接合されていても良い。図５に示す態様では、上部壁５の内面と、天蓋２の立ち上がり部４とが接する部分にヒートシール性を付与しておくと、折り曲げ部１１を天蓋２の立ち上がり部４とを容易に接合することができる。また図６に示す態様では、天蓋２の上面側にヒートシール性を付与しておくことで、折り曲げ部１２を容易にヒートシールすることができる。図６に示した蓋体１のように、天蓋２の立ち上がり部４を内側に折り曲げて折り曲げ部１２を形成する場合、アール部１６が側壁３の上端縁よりも突出するようにすると、口当たり感をより高めることができる。また、特に図示しないが、側壁３の上端部を側壁外側に折り曲げて折り曲げ部を形成しても、天蓋２の立ち上がり部４の上端を外側に折り曲げて、側壁３の上端部を包み込むように折り曲げ部を形成しても、同様の効果を奏することができる。折り曲げ部１１、１２の長さは、天蓋２の立ち上がり部４の長さと同じにしても、立ち上がり部４よりも短く形成しても良い。 (Other embodiments)
FIG. 5 shows a different embodiment of the lid 1 of the present invention. In the lid 1 of this embodiment, the upper wall 5 of the side wall 3 is bent inward so as to wrap the rising portion 4 of the canopy 2. Shows the formed state. Further, FIG. 6 shows a state in which the bent portion 12 is formed by bending the upper end portion of the rising portion 4 of the canopy 2 inward. When the bent portions 11 and 12 shown in FIGS. 5 and 6 are provided so that the rounded portion 16 is formed on the upper end edge of the protruding wall 10, the mouth is applied to the protruding wall 10 when drinking the beverage in the container 7. It is possible to improve the feeling of mouthfeel at the time. The bent inner surface side of the bent portions 11 and 12 may be joined. In the embodiment shown in FIG. 5, if heat-sealing properties are provided to the portion where the inner surface of the upper wall 5 and the rising portion 4 of the canopy 2 are in contact with each other, the bent portion 11 is easily joined to the rising portion 4 of the canopy 2. can do. Further, in the embodiment shown in FIG. 6, the bent portion 12 can be easily heat-sealed by imparting heat-sealing property to the upper surface side of the canopy 2. When the rising portion 4 of the canopy 2 is bent inward to form the bent portion 12 as in the lid body 1 shown in FIG. 6, if the rounded portion 16 protrudes from the upper end edge of the side wall 3, the mouthfeel is felt. Can be further enhanced. Further, although not particularly shown, even if the upper end portion of the side wall 3 is bent outward to form a bent portion, the upper end of the rising portion 4 of the canopy 2 is bent outward and bent so as to wrap the upper end portion of the side wall 3. Even if the portion is formed, the same effect can be obtained. The lengths of the bent portions 11 and 12 may be the same as the length of the rising portion 4 of the canopy 2, or may be formed shorter than the rising portion 4.

本発明の蓋体１は、図７に示すように側壁３の下部壁６に、係合部９の下端部から外周方向に拡がる片部２０を形成しても良い。このような片部２０を設けると、蓋体１と容器７との係合性を高めるために係合部９の径（特に係合部９の下端部の内径）を、容器７の口部の外径よりも小さく設計した場合や、容器寸法のバラツキ等によって容器７の口部の外径が蓋体１の係合部９の径よりも大きくなった場合でも、蓋体１の容器７の口部への係合取り付けが容易となる。また本発明の蓋体１は、必要に応じて図７に示すように蓋体１の上端にカール部２１を設けても良い。図７に示す例ではカール部２１を側壁３の上部壁５の上端部をカールして形成した場合を示すが、カール部２１は図８に示すように天蓋２の立ち上がり部４の上端部をカールして形成しても良い。また特に図示しないが、側壁３の上部壁５と天蓋２の立ち上がり部４の上端部を重ねてカールしてカール部２１を形成しても良い。蓋体１の上端部にカール部２１を設けると、コーヒー等の飲料を飲む際の口当たり感が良くなる。また本発明の蓋体１は、容器７の口部に強く係合して容器７の口部を閉蓋するため容易に外れる虞がないが、カール部２１を有していると、カール部２１が蓋体１を容器７から外す際の手掛り部となって、蓋体１の取り外しを容易に行うことができる。図８に示す蓋体１のように、側壁３の上部壁５と天蓋２の立ち上がり部４の接合端部が、カール部２１によって覆われるようにカール部２１を設けたり、図５に示すように折り曲げ部１１により接合端部が覆われるようにすると、飲料が接合端部から染み込む虞が少なくなり好ましい。 As shown in FIG. 7, the lid 1 of the present invention may form a piece 20 extending in the outer peripheral direction from the lower end of the engaging portion 9 on the lower wall 6 of the side wall 3. When such a single portion 20 is provided, the diameter of the engaging portion 9 (particularly the inner diameter of the lower end portion of the engaging portion 9) is set to the mouth portion of the container 7 in order to enhance the engagement between the lid 1 and the container 7. Even if the outer diameter of the mouth of the container 7 becomes larger than the diameter of the engaging portion 9 of the lid 1 due to variations in the container dimensions or the like, the container 7 of the lid 1 is designed to be smaller than the outer diameter of the lid 1. Easy to engage and attach to the mouth. Further, the lid body 1 of the present invention may be provided with a curl portion 21 at the upper end of the lid body 1 as shown in FIG. 7, if necessary. In the example shown in FIG. 7, the curl portion 21 is formed by curling the upper end portion of the upper wall 5 of the side wall 3, but the curl portion 21 has the upper end portion of the rising portion 4 of the canopy 2 as shown in FIG. It may be curled and formed. Further, although not particularly shown, the upper wall 5 of the side wall 3 and the upper end portion of the rising portion 4 of the canopy 2 may be overlapped and curled to form the curled portion 21. When the curl portion 21 is provided at the upper end portion of the lid body 1, the feeling of mouthfeel when drinking a beverage such as coffee is improved. Further, the lid 1 of the present invention does not easily come off because it strongly engages with the mouth of the container 7 and closes the mouth of the container 7, but if the curl portion 21 is provided, the curl portion is provided. 21 serves as a clue for removing the lid 1 from the container 7, and the lid 1 can be easily removed. As shown in FIG. 8, a curl portion 21 is provided so that the joint end portion between the upper wall 5 of the side wall 3 and the rising portion 4 of the canopy 2 is covered by the curl portion 21, as shown in FIG. It is preferable to cover the joint end portion with the bent portion 11 because the possibility that the beverage permeates from the joint end portion is reduced.

蓋体１の上端縁側に折り曲げ部１１、１２やカール部２１を設けると、側壁３の上部壁５と天蓋２の立ち上がり部４とが接合された蓋体１の上側部分の強度がより高くなり、蓋体１への負荷によって天蓋２が捩れ難くなるため、蓋体１が外力によって外れる虞が更に少なくなる。本発明の蓋体１で閉蓋した容器７を複数横並びに陳列したり、収納したりする場合、折り曲げ部１１、１２を設けた蓋体１等、蓋体周囲にカール部を有していない蓋体は、外寸法がカール部を有する蓋体に比べて小さくて済むため、省スペース化を図れる。またカール部を設ける場合に比べ、側壁全体の高さを低くすることが容易であり、蓋体１に使用する材料を節減してコスト低減化を図りやすい。 When the bent portions 11 and 12 and the curled portion 21 are provided on the upper end edge side of the lid 1, the strength of the upper portion of the lid 1 to which the upper wall 5 of the side wall 3 and the rising portion 4 of the canopy 2 are joined becomes higher. Since the canopy 2 is less likely to be twisted due to the load on the lid 1, the possibility that the lid 1 will come off due to an external force is further reduced. When displaying or storing a plurality of containers 7 closed by the lid 1 of the present invention side by side, the lid 1 provided with the bent portions 11 and 12 does not have a curl portion around the lid. Since the outer dimension of the lid can be smaller than that of the lid having a curled portion, space can be saved. Further, as compared with the case where the curl portion is provided, it is easy to lower the height of the entire side wall, and it is easy to reduce the material used for the lid 1 and reduce the cost.

（更に異なる実施形態の説明）
図１６は更に蓋体１の更に異なる実施形態を示し、この蓋体１は、下部壁６の内側に凹溝状の係合部９を形成しておらず、蓋体１を容器７の口部に嵌め込んだ際に、側壁３内面側の平坦な面と、容器７の口部のカール部８等との接触によって容器を封止する構造になっている。この構造の蓋体１では、容器７との密閉性を向上するために、下部壁６の内面の容器７の口部と接触する部分の摩擦性を高めたり、蓋体１の下端側の内寸法を容器７の口部の外寸法に比べて更に小さめに設計したり、蓋体１の側壁３の傾斜角：αを、容器７の側壁７ａの傾斜角：βよりも小さく設計する等により、密閉性の高い蓋体１とすることができる。本発明の蓋体１は、容器口部に係合する側壁下端部は、紙系素材の重なり構造を有していないため弾力性があり、このため蓋体１下端側の内寸法を容器７の口部の外寸法に比べて更に小さめに設計等しても、容器７口部への嵌め込みが容易に行える。 (Explanation of a further different embodiment)
FIG. 16 further shows a further different embodiment of the lid 1, in which the lid 1 does not form a grooved engaging portion 9 inside the lower wall 6, and the lid 1 is the mouth of the container 7. When fitted into the portion, the container is sealed by contact between the flat surface on the inner surface side of the side wall 3 and the curl portion 8 or the like at the mouth of the container 7. In the lid 1 having this structure, in order to improve the airtightness with the container 7, the frictional property of the portion of the inner surface of the lower wall 6 that comes into contact with the mouth of the container 7 is increased, or the inside of the lower end side of the lid 1 is increased. By designing the dimensions to be smaller than the outer dimensions of the mouth of the container 7, or by designing the inclination angle: α of the side wall 3 of the lid 1 to be smaller than the inclination angle: β of the side wall 7a of the container 7. , The lid 1 with high airtightness can be obtained. In the lid body 1 of the present invention, the lower end portion of the side wall that engages with the container mouth portion is elastic because it does not have an overlapping structure of paper-based materials. Therefore, the inner dimension of the lower end side of the lid body 1 is the container 7 Even if the design is made smaller than the outer dimensions of the mouth portion of the container, it can be easily fitted into the 7 mouth portions of the container.

図９は、本発明の蓋体１を飲料用の容器の蓋体として用いる例を示す。この蓋体１は天蓋２に、飲み口２４（図１０）を開口形成するための切り込み２２を設けた蓋片２３を有している。蓋片２３には蓋片２３を引き上げるための摘み片２５が、一端側にヒートシール等により接合部２５ａを設けて蓋片２３に接合されている。摘み片２５の他端側には、折り曲げ部２５ｂが形成され、折り曲げ部２５ｂの中央付近には、切り込み２５ｄによって片部２５ｃが設けられるようになっている。この蓋体１は、摘み片２５を摘まんで蓋片２３を引き上げることで、飲み口２４が開口形成される。摘み片２５を摘まんで蓋片２３を引き上げる際に、摘み片２５の折り曲げ部２５ｂで摘み片２５が折り曲げられ、この際に突片部２５ｃが摘み片２５の下側に突出する。突出した突片部２５ｃは、天蓋２に設けられた保持孔２６に挿入して摘み片２５を保持することで飲み口２４が開口保持される。この保持孔２６は容器７内の圧抜き穴としても機能する。摘み片２５は、天蓋２側の面に再剥離性の粘着剤を設けておくことで、摘み片２５による飲み口２４の開口、閉止を繰り返して容易に行うことができるが、再剥離性粘着剤は繰り返し使用している間に粘着性が低下する虞があり、粘着性が低下すると引き上げた蓋片２３を引き上げた状態に保持することが困難となり、飲み口２４を開口した状態に保持することができなくなる。一方、図９等に示すように、摘み片２５の突片部２５ｃを天蓋２の保持孔２６に差し込んで飲み口２４の開口状態を維持するようにすると、蓋片２３を繰り返し開閉した場合でも、確実に蓋片２３により飲み口２４を確実に開口保持することができるとともに、粘着剤を設けた摘み片２５によって蓋片２３を保持する場合に比べ、摘み片２５を小さくすることが可能となる。切り込み２２はハーフカット状に形成してもミシン目状に形成しても良い。切り込み２２をハーフカット状に形成すると、蓋片２３を開ける前は高い密閉性を維持することができ、容器内の蒸気圧の上昇に伴って内容物が噴き出たり、蓋体１が不用意に容器７から外れたりすることを防止できる。また飲み口２４を形成するための切り込みに加え、又は飲み口２４を形成するための切り込みに代えて、ストローを挿入するための例えば十字状の切り込みや、カップ焼きそば容器等の場合には、湯切り口形成用の切り込みを設けても良い。 FIG. 9 shows an example in which the lid 1 of the present invention is used as a lid of a container for beverages. The lid 1 has a lid piece 23 provided with a notch 22 in the canopy 2 for forming an opening 24 (FIG. 10). On the lid piece 23, a picking piece 25 for pulling up the lid piece 23 is provided with a joint portion 25a on one end side by a heat seal or the like and is joined to the lid piece 23. A bent portion 25b is formed on the other end side of the picked piece 25, and the one portion 25c is provided near the center of the bent portion 25b by a notch 25d. In the lid body 1, the drinking port 24 is formed by picking the picking piece 25 and pulling up the lid piece 23. When the picking piece 25 is picked and the lid piece 23 is pulled up, the picking piece 25 is bent at the bent portion 25b of the picking piece 25, and at this time, the protruding piece portion 25c protrudes to the lower side of the picking piece 25. The protruding piece portion 25c is inserted into the holding hole 26 provided in the canopy 2 to hold the picked piece 25, so that the drinking spout 24 is opened and held. The holding hole 26 also functions as a pressure relief hole in the container 7. By providing a removable adhesive on the surface of the canopy 2 side, the picking piece 25 can be easily opened and closed by the picking piece 25 by repeatedly opening and closing the drinking spout 24, but the removable adhesive can be obtained. The adhesiveness of the agent may decrease during repeated use, and if the adhesiveness decreases, it becomes difficult to hold the pulled-up lid piece 23 in a pulled-up state, and the drinking spout 24 is held in an open state. You will not be able to. On the other hand, as shown in FIG. 9 and the like, when the projecting piece portion 25c of the picking piece 25 is inserted into the holding hole 26 of the canopy 2 to maintain the open state of the drinking spout 24, even when the lid piece 23 is repeatedly opened and closed. The lid piece 23 can surely hold the opening 24, and the picking piece 25 can be made smaller than the case where the lid piece 25 is held by the picking piece 25 provided with the adhesive. Become. The notch 22 may be formed in a half-cut shape or a perforated shape. When the notch 22 is formed in a half-cut shape, a high degree of airtightness can be maintained before the lid piece 23 is opened, and the contents may be ejected as the vapor pressure in the container rises, or the lid 1 may be careless. It is possible to prevent the container 7 from coming off. Further, in addition to the notch for forming the drinking spout 24, or instead of the notch for forming the drinking spout 24, for example, a cross-shaped notch for inserting a straw, or in the case of a cup yakisoba container, hot water. A notch for forming a cut may be provided.

図１１は紙系素材からなる天蓋２の一部分に透明素材を貼着した窓部２７を設けた蓋体１を示す。窓部２７は、天蓋２に設けた開口孔に、着色又は非着色の、透明又は半透明な樹脂フィルム、セロファン紙、グラシン紙等を貼着したり、透明な紙系素材であるセルロースナノファイバー（セルロースミクロフィブリル）から形成された透明な紙を用いること等により形成することができる。透明や半透明な素材を貼着した窓部２７を設けることにより、蓋体１を容器７から取り外さずに容器７の内容物を確認することができる。窓部２７の形状は図示したものに限らず、任意の大きさ、形状に形成することができる。本実施形態の蓋体１は、天蓋２の紙系素材からなる部分に、切り込み２２を設けて蓋片２３を形成し、この蓋片２３に、蓋片２３を引き開けるための摘み片２５を、その一端側をヒートシール等により接合して設けてある。天蓋２は、全体をフィルムやシート材で形成した場合には、特に図示しないが、裏面側に再剥離性の粘着剤層を設けた摘み片２５を、その一端側をヒートシール等により蓋片２３に接合して、切り込み２２の全体を覆うように摘み片２５を設けると、蓋片２３を引き上げて開口する前の密閉性が高められるとともに、蓋片２３を引き上げて開口した際に、摘み片２５を天蓋２に粘着して固定することで蓋片２３を開口状態で容易に保持することができる。 FIG. 11 shows a lid 1 provided with a window portion 27 to which a transparent material is attached to a part of a canopy 2 made of a paper-based material. The window portion 27 is formed by attaching a colored or non-colored transparent or translucent resin film, cellophane paper, glassin paper, or the like to the opening hole provided in the canopy 2, or a cellulose nanofiber which is a transparent paper-based material. It can be formed by using a transparent paper formed from (cellulose microfibrils) or the like. By providing the window portion 27 to which the transparent or translucent material is attached, the contents of the container 7 can be confirmed without removing the lid 1 from the container 7. The shape of the window portion 27 is not limited to that shown in the figure, and can be formed into any size and shape. In the lid 1 of the present embodiment, a notch 22 is provided in a portion of the canopy 2 made of a paper-based material to form a lid piece 23, and a picking piece 25 for pulling the lid piece 23 open is provided on the lid piece 23. , One end side thereof is joined by a heat seal or the like. When the canopy 2 is entirely made of a film or a sheet material, a picking piece 25 having a removable adhesive layer on the back surface side thereof is not shown in particular, and one end side thereof is covered with a heat seal or the like. When the picking piece 25 is provided so as to be joined to the 23 and cover the entire notch 22, the airtightness before the lid piece 23 is pulled up and opened is improved, and when the lid piece 23 is pulled up and opened, the picking piece 25 is picked up. By adhering and fixing the piece 25 to the canopy 2, the lid piece 23 can be easily held in the open state.

図１２は天蓋２を、天蓋２の立ち上がり部４の周縁から天蓋２の内側に向かう凹陥状部２８が形成されるように形成した蓋体１の例を示す。立ち上がり部４の周縁から天蓋２の内側に向かう凹陥状部２８を設け、該凹陥状部２８付近に飲み口２４を設けることで、一旦飲用した飲料の残部は飲み口２４から容器７内に戻り易く、天蓋２の周囲に広がって天蓋２の上面が汚れる虞が少なくなる。凹陥状部２８は、天蓋２の立ち上がり部４の周縁から天蓋２の中央部に向かって全体的に凹陥状となるように形成しても良いが、天蓋２の一部を凹陥状に形成しても良い。天蓋２の一部を凹陥状に形成する場合、凹陥状部分に飲み口２４が形成されるようにすることが好ましい。
また図１７に示すように、天蓋２の外面側の側壁３との接合部周縁に、囲繞状凸条部３１を設けることによっても、前記凹陥状部２８を設けたと同様に飲用した飲料の残部は飲み口（図示せず）から容器７内に戻り易く、飲料が天蓋２の周囲に広がって天蓋２の上面が汚れる虞が少なくなる。また、囲繞状凸条部３１の内側（天蓋２の内面側）に、容器７のカール部８と接する形状の凹部３２が形成されるようにすると、容器７のカール部８と蓋体１との接触面積が広がるため、より密閉性を高めることができる。 FIG. 12 shows an example of a lid 1 in which the canopy 2 is formed so that a concave portion 28 toward the inside of the canopy 2 is formed from the peripheral edge of the rising portion 4 of the canopy 2. By providing the concave portion 28 from the peripheral edge of the rising portion 4 toward the inside of the canopy 2 and providing the drinking spout 24 in the vicinity of the concave portion 28, the rest of the beverage once drunk returns from the drinking spout 24 to the inside of the container 7. It is easy to spread around the canopy 2 and the possibility that the upper surface of the canopy 2 becomes dirty is reduced. The concave portion 28 may be formed so as to have an overall concave shape from the peripheral edge of the rising portion 4 of the canopy 2 toward the central portion of the canopy 2, but a part of the canopy 2 may be formed in a concave shape. May be. When a part of the canopy 2 is formed in a concave shape, it is preferable that the drinking spout 24 is formed in the concave portion.
Further, as shown in FIG. 17, by providing the surrounding convex ridge 31 on the peripheral edge of the joint with the side wall 3 on the outer surface side of the canopy 2, the rest of the beverage that was drunk in the same manner as the concave portion 28 was provided. Is easy to return to the inside of the container 7 from the drinking spout (not shown), and there is less possibility that the beverage spreads around the canopy 2 and the upper surface of the canopy 2 becomes dirty. Further, if a recess 32 having a shape in contact with the curl portion 8 of the container 7 is formed inside the surrounding convex strip portion 31 (on the inner surface side of the canopy 2), the curl portion 8 of the container 7 and the lid 1 are formed. Since the contact area of the is widened, the airtightness can be further improved.

図１３は、第１実施形態の蓋体１を製造する方法の一例を示す。図１３に示すように本発明の蓋体１は、天蓋２と側壁３とを金型１３、１４で矢印方向から挟んで、成形するとともに、天蓋２の立ち上がり部４と側壁３の上部壁５の内面とを接合するとともに、係合部成形用の金型１５を回転させながら、側壁３の下端部３０の内周面に沿って移動させながら、下端部３０を押圧プレスして係合部９を形成する等により得ることができる。天蓋２の立ち上がり部４と、側壁３の上部壁５内面との間のヒートシール性を有する素材を用い、加熱手段を備えた金型を用いることにより、天蓋２と側壁３とをヒートシールにより、容易に接合一体化することができる。 FIG. 13 shows an example of a method for manufacturing the lid 1 of the first embodiment. As shown in FIG. 13, the lid 1 of the present invention is formed by sandwiching the canopy 2 and the side wall 3 with the molds 13 and 14 from the direction of the arrow and molding the canopy 2, and the rising portion 4 of the canopy 2 and the upper wall 5 of the side wall 3. The lower end portion 30 is pressed and pressed while moving along the inner peripheral surface of the lower end portion 30 of the side wall 3 while rotating the mold 15 for forming the engaging portion while joining the inner surface of the engaging portion. It can be obtained by forming 9 or the like. By using a material having a heat-sealing property between the rising portion 4 of the canopy 2 and the inner surface of the upper wall 5 of the side wall 3, and using a mold provided with a heating means, the canopy 2 and the side wall 3 are heat-sealed. , Can be easily joined and integrated.

上記実施形態に示した蓋体１では、係合部９を側壁３の下端部３０を押圧プレスして側壁下端側内周に囲繞状の凹溝状に形成した場合を示したが、係合部９は容器７の口部と係合する構造を有していれば、係合部９は凹溝状を有していなくてもよく、係合部９の形状、構造は任意に変更することができる。また係合部９を押圧プレス等により凹溝状に形成する場合も、図示したように下部壁６の外面側は凸状に形成されていなくても良い。 In the lid 1 shown in the above embodiment, the case where the engaging portion 9 is formed by pressing and pressing the lower end portion 30 of the side wall 3 to form a surrounding concave groove shape on the inner circumference on the lower end side of the side wall 3 is shown. As long as the portion 9 has a structure that engages with the mouth portion of the container 7, the engaging portion 9 does not have to have a concave groove shape, and the shape and structure of the engaging portion 9 can be arbitrarily changed. be able to. Further, even when the engaging portion 9 is formed in a concave groove shape by a pressing press or the like, the outer surface side of the lower wall 6 may not be formed in a convex shape as shown in the figure.

本発明の蓋体１は、図１９に示すように蓋体１の上端縁部に切り込み４１を設け、該切り込み４１によって上端縁部に折り曲げ可能に構成したタグ４２を設けても良い。タグ４２に容器内容物表示を設け、容器内容物の種類に対応した表示がされたタグを折り曲げる等によって、容器内容物を容易に識別することができる。図１９に示す蓋体１のように、側壁３の上部を天蓋２の立ち上がり部４側に折り曲げ形成した折り曲げ部１１の上端部１１ａに、切り込み４１を設けてタグ４２を形成する場合、図示するように天蓋の立ち上がり部４の上端４ａが、折り曲げ部１１の上端部１１ａの内側部分よりも短くなるように形成し、折り曲げ部１１の上端部１１ａと、天蓋２の立ち上がり部４の上端４ａとの間の空隙部分に、切れ込み４１を設けるようにすると、タグ４２の折曲げが容易となる。 As shown in FIG. 19, the lid body 1 of the present invention may be provided with a notch 41 at the upper end edge portion of the lid body 1, and a tag 42 configured to be bendable at the upper end edge portion by the notch 41. The container contents can be easily identified by providing the container contents display on the tag 42 and bending the tag having the display corresponding to the type of the container contents. When the tag 42 is formed by providing a notch 41 in the upper end portion 11a of the bent portion 11 formed by bending the upper portion of the side wall 3 toward the rising portion 4 side of the canopy 2 as in the lid body 1 shown in FIG. As described above, the upper end 4a of the rising portion 4 of the canopy is formed to be shorter than the inner portion of the upper end portion 11a of the bent portion 11, and the upper end portion 11a of the bent portion 11 and the upper end 4a of the rising portion 4 of the canopy 2 are formed. If the notch 41 is provided in the gap portion between the two, the tag 42 can be easily bent.

図２０は、図１９に示した蓋体１を形成するためのブランク材３５の一例を示し、該ブランク材３５の上端側の弧形状部３３に近い箇所にタグ４２を形成するための切り込み４１ａを有し、下端側の弧形状部３４に近い箇所に、下部壁６の折り返し部４０の切れ込み３９形成するための切れ込み３９ａが設けられている。このブランク材３５の上端側、下端側それぞれを折り曲げ形成することにより、図１９に示すごとく、蓋体１の上端部に切り込み４１を有するタグ４２を有し、下端部には、折り曲げ部４０の下端に切り込み３９を有する蓋体が形成される。 FIG. 20 shows an example of the blank material 35 for forming the lid 1 shown in FIG. 19, and is a notch 41a for forming the tag 42 at a position near the arc-shaped portion 33 on the upper end side of the blank material 35. A notch 39a for forming a notch 39 of the folded-back portion 40 of the lower wall 6 is provided at a position near the arc-shaped portion 34 on the lower end side. By bending each of the upper end side and the lower end side of the blank material 35, as shown in FIG. 19, a tag 42 having a notch 41 at the upper end portion of the lid 1 is provided, and the bent portion 40 is formed at the lower end portion. A lid having a notch 39 at the lower end is formed.

また、図５，図６に示す蓋体１の折り曲げ部１１、１２の上端縁１１ａ、１２ａや、図７、図８に示す蓋体１のカール部２１に、切り込みを設けて蓋体１の上端縁部に折り曲げ可能に構成したタグを設け、該タグに容器内容物表示を設けるようにしても良い。図５に示す蓋体１のように、上部壁５の上端側を折り曲げた折り曲げ部１１を形成した蓋体１や、図６に示す蓋体１のように天蓋の立ち上がり部４の上端側を折り曲げて折り曲げ部１２を形成した蓋体１の場合も、折り曲げ部の曲げ上端部１１ａ、１２ａが、天蓋の立ち上がり部４の上端や、側壁３の上端よりも突出するようにし、当該突出部にタグ部を形成すると、タグ部の折曲げが容易となる。 Further, notches are provided in the upper end edges 11a and 12a of the bent portions 11 and 12 of the lid 1 shown in FIGS. 5 and 6 and the curled portion 21 of the lid 1 shown in FIGS. 7 and 8 to provide the lid 1. A tag configured to be bendable may be provided on the upper end edge portion, and the container content display may be provided on the tag. Like the lid 1 shown in FIG. 5, the lid 1 is formed by bending the upper end side of the upper wall 5, and the upper end side of the canopy rising portion 4 is formed like the lid 1 shown in FIG. Also in the case of the lid 1 formed by bending to form the bent portion 12, the bent upper end portions 11a and 12a of the bent portion are made to protrude from the upper end of the rising portion 4 of the canopy and the upper end of the side wall 3 so as to protrude from the protruding portion. Forming the tag portion facilitates bending of the tag portion.

本発明の蓋体１は、図２４に示すように天蓋２の裏面部２ｂに金属薄膜層４３を設けると、耐水性、耐湿性等を高めることができるとともに、閉蓋時の蓋体１と容器７口部との密着性が向上する。金属薄膜層４３としては、通常アルミニウムが好適に用いられ、アルミニウム箔等の金属箔を貼着したり、蒸着する等により設けることができる。金属薄膜層４３は、天蓋２の裏面部２ｂの露出部分に設けることが好ましく、天蓋２の立ち上がり部４に金属薄膜層４３が設けられていないことにより、立ち上がり部４と側壁３との間のヒートシール性が保たれる。 As shown in FIG. 24, when the metal thin film layer 43 is provided on the back surface portion 2b of the canopy 2, the lid body 1 of the present invention can improve water resistance, moisture resistance, etc., and can be combined with the lid body 1 when the lid is closed. Adhesion with the 7 mouths of the container is improved. As the metal thin film layer 43, aluminum is usually preferably used, and it can be provided by attaching a metal foil such as an aluminum foil or by vapor deposition. The metal thin film layer 43 is preferably provided on the exposed portion of the back surface portion 2b of the canopy 2, and since the metal thin film layer 43 is not provided on the rising portion 4 of the canopy 2, the metal thin film layer 43 is provided between the rising portion 4 and the side wall 3. The heat sealability is maintained.

本発明の蓋体１は、図２５に示すように天蓋２の天面部２ａ（上面部）が凹湾曲状に形成されていると、閉蓋時の密閉性を保ったまま、蓋体１の容器への嵌め込み、取り外しがより容易に行える。また、液体容器用の飲み口を有する蓋体の場合、天面部２ａが凹湾曲状に形成にされていると、飲み残しが天面部２ａから飲み口を経て容器７の内部に戻り易く、天面部２ａ上に残留しにくい。天面部２ａの凹湾曲度は０．３ｍｍ以上が好ましく、より好ましくは０．５ｍｍ以上、更に好ましくは０．８ｍｍ以上、特に好ましくは１ｍｍ以上である。また凹湾曲度の上限は蓋体１の大きさにもよって異なるが、通常は６ｍｍ以下が好ましく、５ｍｍ以下がより好ましく、４ｍｍ以下が更に好ましい。上記凹湾曲度とは、天蓋部２の天面部２ａの最も高い部分と最も低い部分との高さの差であり、図２５に示すように、通常は天蓋２の立ち上がり部４との境界部分と、天面部２ａの最も低い部分のとの間の差：ｈである。 In the lid body 1 of the present invention, when the top surface portion 2a (upper surface portion) of the canopy 2 is formed in a concave curved shape as shown in FIG. It can be easily fitted and removed from the container. Further, in the case of a lid having a drinking port for a liquid container, if the top surface portion 2a is formed in a concave curved shape, leftovers can easily return to the inside of the container 7 from the top surface portion 2a through the drinking port. It does not easily remain on the surface portion 2a. The concave curvature of the top surface portion 2a is preferably 0.3 mm or more, more preferably 0.5 mm or more, still more preferably 0.8 mm or more, and particularly preferably 1 mm or more. The upper limit of the degree of concave curvature varies depending on the size of the lid 1, but is usually preferably 6 mm or less, more preferably 5 mm or less, still more preferably 4 mm or less. The concave curvature is the difference in height between the highest portion and the lowest portion of the top surface portion 2a of the canopy portion 2, and as shown in FIG. 25, the boundary portion with the rising portion 4 of the canopy portion 2 is usually used. The difference between the surface portion 2a and the lowest portion of the top surface portion 2a: h.

図２６は、本発明の蓋体１の更に異なる実施態様を示し、図２６に示すように、下部壁６の折り返し部４０は、端縁４０ａが天蓋部２の裏面部２ｂと接するか、略接するように折り曲げ形成されていても良い。図２６に示す蓋体１や、前記図１９に示す蓋体１では、下部壁６を折り返すことで、下部壁６は２重構造となっているが、天蓋２の周縁の立ち上がり部４は上部壁５に接合されるようになっているため、容器７の口部と係合する部位（下部壁６）が、側壁と天蓋とが重なった構造の従来の蓋体のように固くなる虞がない。このため、下部壁６が２重構造に形成されていたとしても、下部壁６の弾力性が低下する虞がない。 FIG. 26 shows a further different embodiment of the lid 1 of the present invention, and as shown in FIG. 26, the folded-back portion 40 of the lower wall 6 has an edge 40a in contact with the back surface portion 2b of the canopy portion 2, or is omitted. It may be bent and formed so as to be in contact with each other. In the lid 1 shown in FIG. 26 and the lid 1 shown in FIG. 19, the lower wall 6 has a double structure by folding back the lower wall 6, but the rising portion 4 on the peripheral edge of the canopy 2 is the upper portion. Since it is joined to the wall 5, the portion (lower wall 6) that engages with the mouth of the container 7 may become hard like a conventional lid having a structure in which the side wall and the canopy overlap. do not have. Therefore, even if the lower wall 6 is formed in a double structure, there is no possibility that the elasticity of the lower wall 6 will decrease.

上記した説明では、蓋体１が円形状の場合について示したが、本発明の蓋体１は、楕円状や矩形状、三角形状、多角形状、面取り矩形状、面取り多角形状等の形状に形成することもできる。また、上記した例は、それぞれ独立して適用してもよく、また適宜組み合わせて適用してもよい。 In the above description, the case where the lid 1 has a circular shape has been shown, but the lid 1 of the present invention is formed into a shape such as an ellipse, a rectangle, a triangle, a polygon, a chamfered rectangle, or a chamfered polygon. You can also do it. Further, the above examples may be applied independently or in combination as appropriate.

１ 蓋体
２ 天蓋
２ａ 天面部
２ｂ 裏面部
３ 側壁
４ 天蓋の立ち上がり部
５ 側壁の上部壁
６ 側壁の下部壁
７ 容器
８ 容器のカール部
９ 係合部
１０ 突出壁
１１ 折り曲げ部
１１ａ 折り曲げ部端部
１２ 折り曲げ部
１２ａ 折り曲げ部端部
１３ 金型
１４ 金型
１５ 係合部成形用の金型
１６ アール部
２０ 片部
２１ 蓋体のカール部
２２ 切り込み
２３ 蓋片
２４ 飲み口
２５ 摘み片
２５ａ 接合部
２５ｂ 折り曲げ部
２５ｃ 突片部
２５ｄ 切り込み
２６ 保持孔
２７ 窓部
２８ 凹陥状部
２９ 下接合点
３０ 側壁の下端部
３１ 囲繞状凸条部
３２ 凹部
３３ ブランク材の上端側弧形状部
３４ ブランク材の下端側弧形状部
３５ ブランク材
３６ ブランク材の側端部
３７ ブランク材の側端部
３８ 段差
３９ 切り込み
３９ａ 切り込み
４０ 折り返し部
４１ 切り込み
４１ａ 切り込み
４２ タグ
４３ 金属薄膜層

1 Closure 2 Canopy 2a Top surface 2b Back surface 3 Side wall 4 Canopy rising part 5 Side wall upper wall 6 Side wall lower wall 7 Container 8 Container curl part 9 Engagement part 10 Protruding wall 11 Bending part 11a Bending part end 12 Bent part 12a Bent part end 13 Mold 14 Mold 15 Engagement part Mold for forming 16 R part 20 One part 21 Curl part of lid 22 Notch 23 Lid piece 24 Drinking mouth 25 Picking piece 25a Joint part 25b Bent part 25c Projection piece 25d Notch 26 Holding hole 27 Window part 28 Recessed part 29 Lower joint point 30 Lower end of side wall 31 Surrounding ridge 32 Recess 33 Upper end side of blank material Arc shape part 34 Lower end side of blank material Arc-shaped part 35 Blank material 36 Side end of blank material 37 Side end of blank material 38 Step 39 Notch 39a Notch 40 Folded part 41 Notch 41a Notch 42 Tag 43 Metal thin film layer

Claims (17)

容器口部に着脱自在に取り付けられる蓋体であって、
天蓋と、該天蓋の周囲を囲繞し、上端側から下端側に向かって先細り傾斜状に紙系素材で形成された側壁とを有し、
前記側壁は、環状扇形のブランク材の両端側を相互に接合して上端側から下端側に向かって先細り傾斜状に形成され、
前記天蓋と前記側壁とは、前記天蓋の周縁に形成された立ち上がり部を、前記側壁の上部壁内面に接合して一体化されており、
前記上端側から前記下端側に先細り傾斜した前記側壁の下部壁の内周側には、前記容器口部を封止した状態において、該容器口部と係合する係合部を有し、
前記係合部の下端側内寸法が該係合部の上端側内寸法より小さくなるように形成されていることを特徴とする蓋体。 A lid that can be attached and detached to the mouth of the container.
It has a canopy and a side wall that surrounds the canopy and is formed of a paper-based material in a tapered shape from the upper end side to the lower end side.
The side wall is formed in a tapered shape from the upper end side to the lower end side by joining both end sides of the annular fan-shaped blank material to each other.
The canopy and the side wall are integrated by joining a rising portion formed on the peripheral edge of the canopy to the inner surface of the upper wall of the side wall.
An engaging portion that engages with the container mouth portion in a state where the container mouth portion is sealed is provided on the inner peripheral side of the lower wall of the side wall that is tapered from the upper end side to the lower end side.
A lid body characterized in that the inner dimension on the lower end side of the engaging portion is formed to be smaller than the inner dimension on the upper end side of the engaging portion. 前記側壁は、紙系素材の両端部を接合して筒状形成したものである請求項１記載の蓋体。 The lid according to claim 1, wherein the side wall is formed by joining both ends of a paper-based material into a tubular shape. 前記側壁下部壁の係合部は、容器口部のカール部に係合する形状に形成されている請求項１記載の蓋体。 The lid according to claim 1, wherein the engaging portion of the lower wall of the side wall is formed in a shape that engages with the curled portion of the container mouth portion. 前記側壁下部壁の係合部は、前記下部壁内周面を押圧プレスして形成した環状凹溝よりなる請求項１記載の蓋体。 The lid according to claim 1, wherein the engaging portion of the lower wall of the side wall is an annular groove formed by pressing and pressing the inner peripheral surface of the lower wall. 係合部の下端側内寸法が、上端側内寸法よりも小さく形成されている請求項１記載の蓋体。 The lid according to claim 1, wherein the lower end side inner dimension of the engaging portion is formed to be smaller than the upper end side inner dimension. 容器口部に取り付けた際に、係合部の下端側が容器側壁と非接触状態で取り付けられる請求項１記載の蓋体。 The lid according to claim 1, wherein when attached to the container mouth portion, the lower end side of the engaging portion is attached in a non-contact state with the container side wall. 前記側壁は、蓋体が取り付けられる容器の側壁の傾斜角よりも小さい傾斜角で傾斜状に形成されている請求項１記載の蓋体。 The lid according to claim 1, wherein the side wall is formed in an inclined shape with an inclination angle smaller than the inclination angle of the side wall of the container to which the lid is attached. 前記天蓋の天面部は、凹湾曲して形成されていることを特徴とする請求項１記載の蓋体。 The lid body according to claim 1, wherein the top surface portion of the canopy is formed by being concavely curved. 前記天蓋は、紙系素材により形成されている請求項１記載の蓋体。 The lid according to claim 1, wherein the canopy is made of a paper-based material. 前記天蓋は、フィルム又はシートにより形成されている請求項１記載の蓋体。 The lid according to claim 1, wherein the canopy is made of a film or a sheet. 前記天蓋は、立ち上がり部から内側に向かって凹陥状部を有する請求項１記載の蓋体。 The lid according to claim 1, wherein the canopy has a concave portion inward from a rising portion. 前記側壁の上部壁の上端部は、天蓋周縁の立ち上がり部内面側に折り曲げ形成されている請求項１記載の蓋体。 The lid according to claim 1, wherein the upper end of the upper wall of the side wall is bent and formed on the inner surface side of the rising portion of the canopy peripheral edge. 天蓋の立ち上がり部の上端側は、立ち上がり部内面側に折り曲げ形成されている請求項１記載の蓋体。 The lid according to claim 1, wherein the upper end side of the rising portion of the canopy is formed by bending toward the inner surface side of the rising portion. 天蓋の立ち上がり部の上端側は、側壁の上部壁の外側に折り曲げ形成されている請求項１記載の蓋体。 The lid according to claim 1, wherein the upper end side of the rising portion of the canopy is formed by bending outside the upper wall of the side wall. 上端に、カール状部が設けられている請求項１記載の蓋体。 The lid according to claim 1, wherein a curled portion is provided at the upper end. 前記カール状部が、側壁の上部壁の上端部を屈曲して形成されている請求項１５記載の蓋体。 The lid according to claim 15, wherein the curled portion is formed by bending the upper end portion of the upper wall of the side wall. 前記カール状部が、天蓋の立ち上がり部上端部を屈曲して形成されている請求項１５記載の蓋体。



The lid body according to claim 15, wherein the curled portion is formed by bending the upper end portion of a rising portion of the canopy.
JP2021093197A 2020-06-04 2021-06-02 lid Active JP7120393B2 (en)

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PCT/JP2021/021201 WO2021246488A1 (en) 2020-06-04 2021-06-03 Lid body
EP21817785.5A EP4008643B1 (en) 2020-06-04 2021-06-03 Lid body
US17/768,037 US20240092541A1 (en) 2020-06-04 2021-06-03 Lid
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CN202121243752.2U CN216425426U (en) 2020-06-04 2021-06-04 Cover body
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438430A (en) * 1942-06-19 1948-03-23 Canister Company Canister
JPS53137785A (en) * 1977-05-04 1978-12-01 Naomasa Iwasaki Coating lid
JP2002274505A (en) * 2001-03-16 2002-09-25 Toppan Printing Co Ltd Method for sealing and fixing vessel lid
JP2004123105A (en) * 2002-09-30 2004-04-22 Ueda Insatsu Shiko Kk Paper container
JP2006248530A (en) * 2005-03-08 2006-09-21 Pic:Kk Paper-made lid for paper-made container
JP2016069086A (en) * 2014-09-24 2016-05-09 ピーティーエム・パッケージング・ツールズ・マシネリー・ピーティーイー．・リミテッド Lid for beverage cup, cup assembly, and method for manufacturing lid
JP6886068B1 (en) * 2020-06-04 2021-06-16 株式会社Ｋｙ７ Lid

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438430A (en) * 1942-06-19 1948-03-23 Canister Company Canister
JPS53137785A (en) * 1977-05-04 1978-12-01 Naomasa Iwasaki Coating lid
JP2002274505A (en) * 2001-03-16 2002-09-25 Toppan Printing Co Ltd Method for sealing and fixing vessel lid
JP2004123105A (en) * 2002-09-30 2004-04-22 Ueda Insatsu Shiko Kk Paper container
JP2006248530A (en) * 2005-03-08 2006-09-21 Pic:Kk Paper-made lid for paper-made container
JP2016069086A (en) * 2014-09-24 2016-05-09 ピーティーエム・パッケージング・ツールズ・マシネリー・ピーティーイー．・リミテッド Lid for beverage cup, cup assembly, and method for manufacturing lid
JP6886068B1 (en) * 2020-06-04 2021-06-16 株式会社Ｋｙ７ Lid

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