JPWO2016027303A1 - Resin cap - Google Patents

Resin cap Download PDF

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Publication number
JPWO2016027303A1
JPWO2016027303A1 JP2016543507A JP2016543507A JPWO2016027303A1 JP WO2016027303 A1 JPWO2016027303 A1 JP WO2016027303A1 JP 2016543507 A JP2016543507 A JP 2016543507A JP 2016543507 A JP2016543507 A JP 2016543507A JP WO2016027303 A1 JPWO2016027303 A1 JP WO2016027303A1
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Prior art keywords
container mouth
peripheral surface
inner ring
mouth portion
inner peripheral
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JP2016543507A
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JP6502948B2 (en
Inventor
俊也 小林
俊也 小林
友彦 杉森
友彦 杉森
剛 吉良
剛 吉良
力 高野
力 高野
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Suntory Holdings Ltd
Suntory Beverage and Food Ltd
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Suntory Holdings Ltd
Suntory Beverage and Food Ltd
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Publication of JPWO2016027303A1 publication Critical patent/JPWO2016027303A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation

Abstract

ホットフィルを行った場合であっても、容器の密閉性を良好に維持することができる樹脂製キャップを提供する。樹脂製キャップ１０は、容器口部２０に装着され、天板部１１と、天板部１１の周縁から垂下する筒部１２と、天板部１１の内面に形成され、容器口部２０の内周面と接触するインナーリング１４とを備えており、容器口部２０に装着されたとき、容器口部２０の内周面を少なくとも二重にシールする。Provided is a resin cap capable of maintaining good sealing performance of a container even when hot filling is performed. The resin cap 10 is attached to the container mouth portion 20 and formed on the top plate portion 11, the cylindrical portion 12 hanging from the periphery of the top plate portion 11, and the inner surface of the top plate portion 11. An inner ring 14 that comes into contact with the peripheral surface is provided, and when attached to the container mouth portion 20, the inner peripheral surface of the container mouth portion 20 is sealed at least double.

Description

本発明は、ペットボトル等の容器の口部に使用される着脱自在な樹脂製キャップに関する。   The present invention relates to a detachable resin cap used at the mouth of a container such as a plastic bottle.

このような樹脂製キャップとしては、天板部と、天板部の周縁から垂下する筒部と、天板部の内面に形成され、容器口部の外周面と接触するアウターリングと、天板部の内面に形成され、容器口部の内周面と接触するインナーリングと、を備え、アウターリング及びアウターリングよりも長さ（天板部からの垂直距離）が長いインナーリングで容器口部を挟持することによって容器を密封するものが広く使用されている（この従来技術を示す適当な文献はない）。   As such a resin cap, the top plate portion, the cylindrical portion hanging from the periphery of the top plate portion, the outer ring formed on the inner surface of the top plate portion and in contact with the outer peripheral surface of the container mouth portion, and the top plate An inner ring formed on the inner surface of the container and in contact with the inner peripheral surface of the container mouth, and the container mouth with the inner ring having a longer length (vertical distance from the top plate) than the outer ring and the outer ring. What seals a container by pinching is widely used (there is no appropriate literature showing this prior art).

ペットボトル等の容器に高温の内容物を充填するホットフィルと呼ばれる方法がある。ホットフィルでは、高温の内容物がインナーリングに接触することになるが、このときの熱によってインナーリングの変形やへたり（劣化）が生じる場合がある。これにより、容器口部に対するインナーリングの押圧力が低下してしまい、容器の密閉性が低下するという点で改善の余地があった。   There is a method called hot fill in which containers such as PET bottles are filled with high-temperature contents. In hot fill, high-temperature contents come into contact with the inner ring, but the inner ring may be deformed or sag (deteriorated) by heat at this time. As a result, the pressing force of the inner ring against the container mouth portion is reduced, and there is room for improvement in that the sealing performance of the container is reduced.

本発明は、このような状況を鑑みてなされたものであり、ホットフィルを行った場合であっても、容器の密閉性を良好に維持することができる樹脂製キャップを提供することを目的とする。   The present invention has been made in view of such a situation, and an object of the present invention is to provide a resin cap that can maintain good sealing performance of a container even when hot filling is performed. To do.

本発明に係る樹脂製キャップの特徴構成は、容器口部に装着され、天板部と、前記天板部の周縁から垂下する筒部と、前記天板部の内面に形成され、前記容器口部の内周面と接触するインナーリングと、を備える樹脂製キャップであって、前記容器口部に装着されたとき、前記容器口部の内周面を少なくとも二重にシールする点にある。   A characteristic configuration of the resin cap according to the present invention is mounted on a container mouth portion, formed on the top plate portion, a cylindrical portion depending from the periphery of the top plate portion, and an inner surface of the top plate portion, and the container mouth A resin cap comprising an inner ring in contact with the inner peripheral surface of the portion, wherein the inner peripheral surface of the container mouth portion is at least double sealed when attached to the container mouth portion.

この構成によれば、容器口部の内周面を少なくとも二重にシールすることで、シール部の一つが内容物との接触で変形やへたりが生じたとしても、内容物と接触していない他のシール部のシール性は確保されているため、容器の密閉性の良好に維持することができる。   According to this configuration, by sealing at least double the inner peripheral surface of the container mouth portion, even if one of the seal portions is deformed or sag due to contact with the contents, it is in contact with the contents. Since the sealing performance of the other sealing portions that are not present is ensured, the sealing performance of the container can be kept good.

本発明の更なる特徴構成は、前記インナーリングの外周面に複数の突出部が形成されており、前記容器口部に装着されたとき、前記複数の突出部が前記容器口部の内周面と接触することで、前記容器口部の内周面を少なくとも二重にシールする点にある。   According to a further feature of the present invention, a plurality of protrusions are formed on the outer peripheral surface of the inner ring, and when the plurality of protrusions are attached to the container mouth portion, the plurality of protrusions are the inner peripheral surface of the container mouth portion. Is in that the inner peripheral surface of the container mouth is at least double sealed.

この構成によれば、インナーリングに形成した突出部を利用して、容器口部の内周面を少なくとも二重にシールするという構成を容易に実現することができる。   According to this configuration, it is possible to easily realize a configuration in which the inner peripheral surface of the container mouth portion is sealed at least double by using the protruding portion formed on the inner ring.

本発明の更なる特徴構成は、前記容器口部に装着されたとき、前記天板部は、縦断面視において前記容器口部よりも内側に、前記容器口部側に向かって突出するように窪んだ窪み部が形成されており、前記インナーリングは、前記窪み部に形成されており、前記容器口部に装着されたとき、前記窪み部と前記インナーリングとが前記容器口部の内周面と接触することで、前記容器口部の内周面を少なくとも二重にシールする点にある。   According to a further characteristic configuration of the present invention, when the container mouth portion is mounted, the top plate portion protrudes inward of the container mouth portion toward the container mouth portion side in a longitudinal sectional view. A hollow portion is formed, and the inner ring is formed in the hollow portion, and when the inner ring is attached to the container mouth portion, the hollow portion and the inner ring are the inner periphery of the container mouth portion. By contacting the surface, the inner peripheral surface of the container mouth is at least double sealed.

この構成によれば、インナーリングとともに窪み部を利用してシールを行う（シール部を形成する）ことで、容器口部の内周面を少なくとも二重にシールするという構成を容易に実現することができる。
また、窪み部にインナーリングを形成することで、従来よりもインナーリングを短くすることができるため、インナーリングの剛性を高めて、インナーリングの変形を抑制することができる。
また、インナーリングと容器口部との接触部分を容器口部の先端部から遠ざけることができるため、容器の密閉が早期に解除されることを防止できる。
さらに、窪み部によって容器口部を内周面側から支持することができるため、樹脂製キャップにアウターリングを設けた場合に、アウターリングからの押圧力で容器口部の内倒れが発生することを防止できる。According to this configuration, by performing sealing using the recessed portion together with the inner ring (forming the seal portion), it is possible to easily realize a configuration in which the inner peripheral surface of the container mouth portion is at least double sealed. Can do.
Moreover, since an inner ring can be shortened rather than the former by forming an inner ring in a hollow part, the rigidity of an inner ring can be improved and a deformation | transformation of an inner ring can be suppressed.
Moreover, since the contact part of an inner ring and a container opening part can be kept away from the front-end | tip part of a container opening part, it can prevent that the sealing of a container is cancelled | released at an early stage.
Furthermore, since the container mouth can be supported from the inner peripheral surface side by the depression, when the outer ring is provided on the resin cap, the container mouth may fall down due to the pressing force from the outer ring. Can be prevented.

本発明の更なる特徴構成は、前記インナーリングが、基部近傍から基部に向かって厚みが増すように形成されている点にある。   A further characteristic configuration of the present invention is that the inner ring is formed so as to increase in thickness from the vicinity of the base toward the base.

この構成によれば、インナーリングの基部を厚くして、インナーリングの変形やへたりの発生を抑制できる。   According to this configuration, the base portion of the inner ring can be thickened, and deformation of the inner ring and occurrence of sag can be suppressed.

本発明の樹脂製キャップを容器口部に装着した状態を示す断面図である。It is sectional drawing which shows the state which mounted | wore the container mouth part with the resin caps of this invention. 本発明の樹脂製キャップの要部拡大図である。It is a principal part enlarged view of the resin caps of this invention. 図１中のＩＩＩ−ＩＩＩ線の断面図である。It is sectional drawing of the III-III line | wire in FIG. 本発明の樹脂製キャップの変形例を容器口部に装着した状態を示す断面図である。It is sectional drawing which shows the state with which the modified example of the resin caps of this invention was mounted | worn to the container opening part. 本発明の樹脂製キャップの変形例を示す要部拡大図である。It is a principal part enlarged view which shows the modification of the resin-made caps of this invention. 本発明の樹脂製キャップの変形例を示す要部拡大図である。It is a principal part enlarged view which shows the modification of the resin-made caps of this invention.

以下、図面を参照して本発明の樹脂製キャップについて説明する。   Hereinafter, the resin cap of the present invention will be described with reference to the drawings.

［実施形態１］
本実施形態に係る樹脂製キャップ１０は、図１に示すように、樹脂製の容器口部２０に使用される。
本実施形態に係る樹脂製キャップ１０は、図１〜３に示すように、天板部１１と、天板部１１の周縁から垂下する筒部１２と、天板部１１の内面に形成され、容器口部２０の外周面と接触するアウターリング１３と、天板部１１の内面に形成され、容器口部２０の内周面と接触するインナーリング１４とを備えている。[Embodiment 1]
As shown in FIG. 1, the resin cap 10 according to the present embodiment is used for a resin container mouth portion 20.
As shown in FIGS. 1 to 3, the resin cap 10 according to the present embodiment is formed on the top plate portion 11, the cylindrical portion 12 hanging from the periphery of the top plate portion 11, and the inner surface of the top plate portion 11. An outer ring 13 in contact with the outer peripheral surface of the container mouth portion 20 and an inner ring 14 formed on the inner surface of the top plate portion 11 and in contact with the inner peripheral surface of the container mouth portion 20 are provided.

樹脂製キャップ１０は、材質、製法等が特に限定されるものではないが、例えば、ポリエチレン、ポリスチレン等の樹脂を用い、天板部１１、筒部１２、アウターリング１３、インナーリング１４を一体に射出成型することにより製造することができる。   The material and manufacturing method of the resin cap 10 are not particularly limited. For example, a resin such as polyethylene or polystyrene is used, and the top plate portion 11, the cylindrical portion 12, the outer ring 13, and the inner ring 14 are integrated. It can be manufactured by injection molding.

樹脂製キャップ１０の天板部１１は、容器口部２０の形状に合わせて円板状に形成してあり、筒部１２の内周面にねじ山１２ａを設けて、容器口部２０の外周面に形成されたねじ山２０ａと螺合することにより、樹脂製キャップ１０が容器口部２０に装着されるようにしてある。   The top plate portion 11 of the resin cap 10 is formed in a disc shape in accordance with the shape of the container mouth portion 20, and the outer periphery of the container mouth portion 20 is provided with a thread 12 a on the inner peripheral surface of the tube portion 12. The resin cap 10 is attached to the container opening 20 by screwing with a screw thread 20a formed on the surface.

アウターリング１３及びインナーリング１４は、天板部１１の内面から突出した形状を有する。アウターリング１３の内周面が容器口部２０の外周面に、インナーリング１４の外周面が容器口部２０の内周面にそれぞれ接触することで、容器が密封される。   The outer ring 13 and the inner ring 14 have a shape protruding from the inner surface of the top plate portion 11. The container is sealed when the inner peripheral surface of the outer ring 13 contacts the outer peripheral surface of the container mouth portion 20 and the outer peripheral surface of the inner ring 14 contacts the inner peripheral surface of the container mouth portion 20.

インナーリング１４は、インナーリング１４の径方向外側に向かって突出する突出部１４ａが外周面に２つ形成されており、縦断面視形状が櫛刃状となっている。２つの突出部１４ａが容器口部２０の内周面と接触することで、容器口部２０の内周面が二重にシールされる。２つの突出部１４ａのうち、インナーリング１４の先端部側に形成されたものは内容物との接触によって変形やへたりが生じる可能性があるが、インナーリング１４の基部側に形成されたものは内容物と接触しないため、良好なシール性を維持することができる。   The inner ring 14 has two protrusions 14a that protrude outward in the radial direction of the inner ring 14 on the outer peripheral surface, and has a comb blade shape in a longitudinal sectional view. As the two projecting portions 14a come into contact with the inner peripheral surface of the container mouth portion 20, the inner peripheral surface of the container mouth portion 20 is double-sealed. Of the two protrusions 14a, the one formed on the tip side of the inner ring 14 may be deformed or sag due to contact with the contents, but the one formed on the base side of the inner ring 14 Since it does not come into contact with the contents, good sealing performance can be maintained.

突出部１４ａは、曲面状に突出するように形成されており、これにより、容器口部２０に樹脂製キャップ１０を装着する際の抵抗（キャッピング抵抗）を低下させることができる。   The protruding portion 14a is formed so as to protrude in a curved shape, whereby the resistance (capping resistance) when the resin cap 10 is attached to the container mouth portion 20 can be reduced.

インナーリング１４は、基部近傍から基部に向かって厚みが増すように形成されており、本実施形態では、突出部１４ａの部分を除いて基部が最も厚くなるように形成されている。これにより、インナーリング１４をへたりにくくすることができる。   The inner ring 14 is formed so as to increase in thickness from the vicinity of the base portion toward the base portion. In the present embodiment, the inner portion 14 is formed so that the base portion is thickest except for the protruding portion 14a. Thereby, the inner ring 14 can be made difficult to sag.

容器口部２０を有する容器としては、特に限定されないが、例えば、ポリエチレンフタレート等の合成樹脂から製造された飲料用等の樹脂製容器に適用することができる。特に、果汁飲料、スポーツドリンク、お茶等に使用される、内容物を高温状態で充填する樹脂製容器に好適である。   Although it does not specifically limit as a container which has the container opening part 20, For example, it can apply to resin-made containers for drinks manufactured from synthetic resins, such as polyethylene phthalate. In particular, it is suitable for resin containers used for fruit juice drinks, sports drinks, teas, and the like, in which the contents are filled at a high temperature.

［その他の実施形態］
上記の実施形態では、突出部１４ａを、インナーリング１４の外周面の先端部と略中央部とに形成した場合について説明したが、突出部１４ａを形成する位置はこれに限定されない。例えば、インナーリング１４の外周面の略中央部に突出部１４ａを２つ形成してもよい。[Other Embodiments]
In the above-described embodiment, the case where the protruding portion 14a is formed at the front end portion and the substantially central portion of the outer peripheral surface of the inner ring 14 has been described, but the position where the protruding portion 14a is formed is not limited thereto. For example, two protrusions 14 a may be formed at the substantially central portion of the outer peripheral surface of the inner ring 14.

上記の実施形態では、２つの突出部１４ａを同形状で形成した場合について説明したが、互いに異なる形状で形成してもよい。   In the above embodiment, the case where the two projecting portions 14a are formed in the same shape has been described, but they may be formed in different shapes.

上記の実施形態では、インナーリング１４に形成した２つの突出部１４ａを容器口部２０の内周面と接触させることで容器口部２０の内周面を二重にシールする場合について説明したが、容器口部２０の内周面を二重にシールする手法はこれに限定されない。例えば、図４，５に示すように、縦断面視において容器口部２０よりも内側に、容器口部２０側に向かって突出するように窪んだ窪み部１５を形成するとともに、窪み部１５にインナーリング１４を形成し、窪み部１５とインナーリング１４とを容器口部２０の内周面と接触させることで、容器口部２０の内周面を二重にシールしてもよい。この形態では、天板部１１から容器口部２０までの距離が短くなり、従来よりもインナーリング１４を短くすることができるため、インナーリング１４の剛性を高めて、インナーリング１４の変形を抑制することができる。
また、インナーリング１４と容器口部２０との接触部分を容器口部２０の先端部から遠ざけることができるため、容器の密閉が早期に解除されることを防止することができる。
さらに、アウターリング１３からの押圧力と対向する方向から窪み部１５が容器口部２０を支持することができるため、容器口部２０の内倒れの発生を抑制できる。In the above embodiment, the case where the inner peripheral surface of the container mouth portion 20 is double-sealed by bringing the two protruding portions 14a formed on the inner ring 14 into contact with the inner peripheral surface of the container mouth portion 20 has been described. The method of double sealing the inner peripheral surface of the container mouth portion 20 is not limited to this. For example, as shown in FIGS. 4 and 5, a recess 15 is formed on the inner side of the container mouth 20 in the longitudinal sectional view so as to protrude toward the container mouth 20, and the recess 15 is formed in the recess 15. The inner peripheral surface of the container mouth portion 20 may be double sealed by forming the inner ring 14 and bringing the recess 15 and the inner ring 14 into contact with the inner peripheral surface of the container mouth portion 20. In this form, since the distance from the top plate part 11 to the container mouth part 20 is shortened and the inner ring 14 can be made shorter than before, the rigidity of the inner ring 14 is increased and the deformation of the inner ring 14 is suppressed. can do.
Moreover, since the contact part of the inner ring 14 and the container mouth part 20 can be kept away from the front-end | tip part of the container mouth part 20, it can prevent that the sealing of a container is cancelled | released at an early stage.
Furthermore, since the hollow part 15 can support the container mouth part 20 from the direction opposite to the pressing force from the outer ring 13, the occurrence of the internal fall of the container mouth part 20 can be suppressed.

窪み１５の外周面は、容器口部の内周面に沿った形状で、容器口部の内周面と摺動可能に形成すればよい。窪み１５の内周面の形状は特に限定されず、円形状、四角形状等、種々の形状が採用可能である。   What is necessary is just to form the outer peripheral surface of the hollow 15 along the inner peripheral surface of a container mouth part, and to be slidable with the inner peripheral surface of a container mouth part. The shape of the inner peripheral surface of the recess 15 is not particularly limited, and various shapes such as a circular shape and a rectangular shape can be employed.

図４，５において、インナーリング１４は、インナーリング１４の径方向外側に向かって突出する突出部１４ａを先端部に有し、突出部１４ａを容器口部２０の内周面と接触させているが、図６に示すように、インナーリング１４を直線状の形状とし、その先端部を容器口部２０の内周面と接触させてもよい。この形態では、インナーリング１４を、容器口部２０の軸線方向に対して斜め方向から容器口部２０に接触させることができるため、容器口部２０に対するインナーリング１４の押圧力を強くすることができる。   4 and 5, the inner ring 14 has a protruding portion 14 a that protrudes radially outward of the inner ring 14 at the distal end, and the protruding portion 14 a is in contact with the inner peripheral surface of the container mouth portion 20. However, as shown in FIG. 6, the inner ring 14 may have a linear shape, and its tip may be brought into contact with the inner peripheral surface of the container mouth portion 20. In this embodiment, since the inner ring 14 can be brought into contact with the container mouth 20 from an oblique direction with respect to the axial direction of the container mouth 20, the pressing force of the inner ring 14 against the container mouth 20 can be increased. it can.

上記の実施形態においては、容器口部２０の内周面を二重にシールする場合、すなわち、容器口部２０の内周面にシール部を２つ形成する場合について説明したが、容器口部２０の内周面に形成するシール部の数はこれに限定されず、３つ以上であってもよい。例えば、シール部を３つ形成する場合であれば、インナーリング１４の外周面に突出部１４ａを３つ形成し、３つの突出部１４ａを容器口部の内周面と接触させればよい。また、図４，５に示した窪み部１５に突出部１４ａを２つ有するインナーリング１４を形成し、窪み部１５と、２つの突出部１４ａとを容器口部２０の内周面と接触させてもよい。   In the above embodiment, the case where the inner peripheral surface of the container mouth portion 20 is double sealed, that is, the case where two seal portions are formed on the inner peripheral surface of the container mouth portion 20 has been described. The number of seal portions formed on the inner peripheral surface of 20 is not limited to this, and may be three or more. For example, if three seal portions are formed, three protrusions 14a may be formed on the outer peripheral surface of the inner ring 14, and the three protrusions 14a may be brought into contact with the inner peripheral surface of the container mouth portion. Moreover, the inner ring 14 which has the two protrusion parts 14a in the hollow part 15 shown in FIG.4, 5 is formed, and the hollow part 15 and the two protrusion parts 14a are made to contact with the internal peripheral surface of the container mouth part 20. FIG. May be.

なお、これまで説明してきた容器口部２０の内周面を少なくとも二重にシールする手法は、あくまで好適な例示として挙げたものであり、他の手法を用いてもよい。例えば、インナーリング１４の先端部を分岐させ、この先端部と容器口部２０の内周面とを接触させてもよい。   In addition, the method of sealing the inner peripheral surface of the container mouth part 20 demonstrated so far at least double is given as a suitable example to the last, and other methods may be used. For example, the distal end portion of the inner ring 14 may be branched, and the distal end portion may be brought into contact with the inner peripheral surface of the container mouth portion 20.

１０ ：樹脂製キャップ
１１ ：天板部
１２ ：筒部
１２ａ ：ねじ山
１３ ：アウターリング
１４ ：インナーリング
１４ａ ：突出部
１５ ：窪み部
２０ ：容器口部
２０ａ ：ねじ山DESCRIPTION OF SYMBOLS 10: Resin cap 11: Top plate part 12: Tube part 12a: Screw thread 13: Outer ring 14: Inner ring 14a: Protrusion part 15: Depression part 20: Container mouth part 20a: Screw thread

Claims (4)

容器口部に装着され、
天板部と、
前記天板部の周縁から垂下する筒部と、
前記天板部の内面に形成され、前記容器口部の内周面と接触するインナーリングと、を備える樹脂製キャップであって、
前記容器口部に装着されたとき、前記容器口部の内周面を少なくとも二重にシールする樹脂製キャップ。Attached to the container mouth,
The top plate,
A tube part depending from the periphery of the top plate part;
An inner ring formed on the inner surface of the top plate portion and in contact with the inner peripheral surface of the container mouth portion, and a resin cap,
A resin cap that seals at least double the inner peripheral surface of the container mouth when mounted on the container mouth. 前記インナーリングの外周面に複数の突出部が形成されており、
前記容器口部に装着されたとき、前記複数の突出部が前記容器口部の内周面と接触することで、前記容器口部の内周面を少なくとも二重にシールする請求項１記載の樹脂製キャップ。A plurality of protrusions are formed on the outer peripheral surface of the inner ring,
2. The inner peripheral surface of the container mouth portion is at least double sealed by contacting the inner peripheral surface of the container mouth portion with the plurality of projecting portions when attached to the container mouth portion. Resin cap. 前記容器口部に装着されたとき、前記天板部は、縦断面視において前記容器口部よりも内側に、前記容器口部側に向かって突出するように窪んだ窪み部が形成されており、
前記インナーリングは、前記窪み部に形成されており、
前記容器口部に装着されたとき、前記窪み部と前記インナーリングとが前記容器口部の内周面と接触することで、前記容器口部の内周面を少なくとも二重にシールする請求項１又は２記載の樹脂製キャップ。When mounted on the container mouth portion, the top plate portion is formed with a recessed portion that is recessed so as to protrude toward the container mouth portion side inside the container mouth portion in a longitudinal sectional view. ,
The inner ring is formed in the recess,
The at least double seal of the inner peripheral surface of the container mouth portion when the recessed portion and the inner ring come into contact with the inner peripheral surface of the container mouth portion when mounted on the container mouth portion. The resin cap according to 1 or 2. 前記インナーリングは、基部近傍から基部に向かって厚みが増すように形成されている請求項１〜３のいずれか一項に記載の樹脂製キャップ。   The said inner ring is a resin-made cap as described in any one of Claims 1-3 currently formed so that thickness may increase toward the base from the base vicinity.
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JP2005503966A (en) * 2001-09-28 2005-02-10 ジェン−プローブ・インコーポレイテッド Closure system
JP2008265873A (en) * 2007-03-22 2008-11-06 Toyo Seikan Kaisha Ltd Plastic cap provided with ic tag

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US5786196A (en) * 1995-06-12 1998-07-28 The United States Of America As Represented By The Secretary Of Agriculture Bacteria and enzymes for production of alternan fragments

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Publication number Priority date Publication date Assignee Title
JPS5296184A (en) * 1976-02-03 1977-08-12 Grussen Jean Sealed lid
JP2002087450A (en) * 2000-09-19 2002-03-27 Murazumi Kogyo Kk Watertight container
JP2005503966A (en) * 2001-09-28 2005-02-10 ジェン−プローブ・インコーポレイテッド Closure system
JP2008265873A (en) * 2007-03-22 2008-11-06 Toyo Seikan Kaisha Ltd Plastic cap provided with ic tag

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