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WO2022177022A1 - Lid - Google Patents

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Publication number
WO2022177022A1
WO2022177022A1 PCT/JP2022/007199 JP2022007199W WO2022177022A1 WO 2022177022 A1 WO2022177022 A1 WO 2022177022A1 JP 2022007199 W JP2022007199 W JP 2022007199W WO 2022177022 A1 WO2022177022 A1 WO 2022177022A1
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WO
WIPO (PCT)
Prior art keywords
lid
container
wall portion
ring
wall part
Prior art date
Application number
PCT/JP2022/007199
Other languages
French (fr)
Japanese (ja)
Inventor
裕一 内藤
宏 山本
伸生 衣袋
保夫 石塚
Original Assignee
日本製紙株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本製紙株式会社 filed Critical 日本製紙株式会社
Publication of WO2022177022A1 publication Critical patent/WO2022177022A1/en

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Classifications

    • 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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • 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
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/02—Removable lids or covers
    • B65D43/06—Removable lids or covers having a peripheral channel embracing the rim of the container

Definitions

  • the present invention relates to a lid that is attached to and seals a container provided with a ring-shaped reinforcing rim protruding outward from the upper end of an opening that opens upward.
  • the container As a lidded container, the container is provided with a ring-shaped reinforcing rim that protrudes outward from the body wall by curling the upper end of the body wall toward the outside at the upper end of the opening that opens upward from the body wall.
  • a container with a lid is widely known in which a lid wall portion fitted to the outer side of the body wall portion of the container is provided with a ring-shaped concave portion that fits into the reinforcing edge of the container.
  • the lids of such lidded containers are mostly made of plastic because of their airtightness and ease of molding (see, for example, Patent Documents 1 and 2).
  • An object of the present invention is to provide a lid that is easy to attach to a container, easy to discard or recycle, and easy to manufacture.
  • the invention according to claim 1 is a lid that covers and seals a container provided with a ring-shaped reinforcing edge projecting outward from the upper end of an opening that opens upward, It comprises a lid top portion covering the opening of the container, and a lid wall portion externally fitted to the body wall portion of the container.
  • the cover wall portion is formed by bending an upper end of the upward close contact wall portion outward in an inverted U shape, and the cover wall portion is provided with the reinforcement. It is characterized in that it has a ring-shaped concave portion that fits with the rim, and that the lid top portion and the lid wall portion are formed by drawing from a sheet of paper material.
  • the lid top portion has an upward contact wall portion on the outer periphery thereof, which is fitted into the body wall portion of the container and can be brought into close contact with the inner surface of the body wall portion.
  • the lid when the lid is pushed down, the ring-shaped recess provided in the lid wall portion is widened by the reinforcing edge of the container, and the reinforcing edge enters the ring-shaped recess and the ring-shaped recess and the reinforcing edge are fitted.
  • the ring-shaped recess expands due to the expansion and contraction of the wrinkles generated in the lid wall portion including the ring-shaped recess when the lid is formed by drawing the paper material, and the expansion and contraction of the paper material itself.
  • the lid can be easily attached to the opening of the container.
  • top plate portion and the body portion fitting wall are formed by drawing from a sheet of paper material, they can be easily manufactured. Moreover, since the lid is made of paper, disposal and recycling can be easily performed.
  • the invention according to claim 2 is characterized in that the paper material according to claim 1 is water-resistant treated at least on the inner surface side.
  • the paper material is water-resistant at least on the inner surface side. It is possible to avoid the situation such as putting out.
  • the lid of the present invention it is easy to attach to a container, easy to discard and recycle, and easy to manufacture.
  • FIG. 2 is a partial longitudinal side view of a container using the lid shown in Fig. 1; 1. It is explanatory drawing which shows the process which closes the opening part of a container with the lid
  • FIG. 1 is a partial longitudinal side view showing the lid according to the present invention
  • FIG. 2 is a partial longitudinal side view of a container using the lid shown in FIG. 1
  • FIG. 3 is a process of closing the opening of the container with the lid shown in FIG. 4 is a partially enlarged longitudinal sectional view showing a state in which the opening of the container is closed with the lid shown in FIG.
  • the lid 1 of the present embodiment has a ring-shaped reinforcement projecting outward from the shell wall portion 2 by curling the upper end of the shell wall portion 2 outward at the upper end of the opening 3 opening upwardly of the shell wall portion 2 .
  • a lid 1 that covers a container 5 provided with a rim 4 and closes an opening 3 .
  • the lid 1 is composed of a lid top portion 6 covering the opening 3 of the container 5 and a lid wall portion 7 externally fitted to the body wall portion 2 of the container 5 .
  • the lid top portion 6 has, on its outer periphery, a cylindrical upward contact wall portion 8 that can be fitted into the body wall portion 2 of the container 5 and can be in close contact with the inner surface of the body wall portion 2 .
  • the lid wall portion 7 is formed by bending outward in an inverted U shape from the upper end of the upward contact wall portion 8 , and the lid wall portion 7 is bent in an inverted U shape and then further inwardly.
  • the ring-shaped concave portion 9 which is curled and fitted with a reinforcing edge 4 provided at the upper end of the opening 3 of the body wall portion 2 of the container 5 .
  • the ring-shaped recessed portion 9 is followed by a skirt portion 10 that spreads from the lower end of the ring-shaped recessed portion 9 in the downward obliquely outward direction.
  • the skirt portion 10 Since the skirt portion 10 is spread out by contacting the edge 4 and the reinforcement edge 4 slides on the inclined inner surface of the skirt portion 10, the skirt portion 10 can be easily spread as the skirt portion 10 spreads. Since the ring-shaped concave portion 9 is widened, it is possible to easily attach the lid 1 to the opening portion 3 of the container 5 . In addition, by providing the skirt portion 10, when the lid 1 is used in an automatic lid closing machine, process troubles during loading into the machine and removal in the lid closing process can be reduced.
  • the length of the skirt portion 10 is not particularly limited, it is preferably 1 mm or longer, more preferably 3 mm or longer, and even more preferably 5 mm or longer.
  • the upper limit is preferably 100 mm or less, more preferably 50 mm or less, and even more preferably 30 mm or less.
  • the lid 1 of this example is made of paper, and the paper material used in this example preferably has a longitudinal breaking elongation of 0.5 to 0.5 as specified in JIS P 8113 in order to facilitate draw molding, which will be described later. 4.5%, more preferably 1.0 to 4.0%, and the breaking elongation in the transverse direction is preferably 2.5 to 8.5%, more preferably 3.0 to 8.0%. 0%.
  • the longitudinal tensile strength specified in JIS P 8113 is preferably 3.0 to 30.0 kN/m, more preferably 5.0 to 28.0 kN/m, and the transverse tensile strength The strength is preferably 2.0-20.0 kN/m, more preferably 3.0-18.0 kN/m.
  • the paper material is water-resistant. It is sufficient that at least the inner surface of the paper material is subjected to the water-resistant treatment.
  • at least the inner surface of the paper material is laminated or coated with a thermoplastic resin layer to laminate a thermoplastic resin layer, paraffin, beeswax, silicone resin, fluorine resin, rosin-based sizing agent, alkyl
  • a thermoplastic resin layer to laminate a thermoplastic resin layer, paraffin, beeswax, silicone resin, fluorine resin, rosin-based sizing agent, alkyl
  • waterproofing agents such as ketene dimer and wet paper strength agents, and waterproofing agents including styrene-based resins, acrylic-based resins, polyolefin-based resins, and the like.
  • the upward contact wall portion 8 provided in the lid top portion 6, the inverted U-shaped bending forming the lid wall portion 7, the ring-shaped concave portion 9 provided in the lid wall portion 7, and the The hakama part 10 is formed by drawing from a sheet of paper material.
  • the paper material used has a longitudinal breaking elongation of 0.5 to 4.5%, a transverse breaking elongation of 2.5 to 8.5%, and a longitudinal tensile strength of 3.0.
  • the lid top portion 6 has an upward close contact wall portion 8 that can be fitted into the body wall portion 2 of the container 5 and can be brought into close contact with the inner surface of the body wall portion 2 . Therefore, by pushing down the lid 1 with the inner surface side of the lid top portion 6 facing the opening portion 3 of the container 5, the upward close contact wall portion 8 of the lid top portion 6 is tightly fitted into the container 5, and the container is closed. The opening 3 of 5 can be reliably sealed.
  • the ring-shaped recess 9 provided in the lid wall portion 7 is widened by the reinforcing edge 4 of the container 5, and the reinforcing edge 4 enters the ring-shaped recess 9.
  • the ring-shaped recess 9 and the reinforcing edge 4 are fitted.
  • the ring-shaped recess 9 expands due to the expansion and contraction of the wrinkles generated in the lid wall portion 7 including the ring-shaped recess 9 when the lid 1 is formed by drawing the paper material, and the expansion and contraction of the paper material itself.
  • the ring-shaped concave portion 9 can be easily widened, and fitting with the reinforcing edge 4 can be easily performed.
  • the lid 1 is formed from a sheet of paper material, and includes an upward contact wall portion 8 on the lid top portion 6, an inverted U-shaped bent to form the lid wall portion 7, and a ring shape on the lid wall portion 7. Since the concave portion 9 and the skirt portion 10 are formed by draw molding, they can be easily manufactured, and since they are made of paper, disposal and recycling can be easily performed.
  • the paper material forming the lid 1 is a liquid, so that the liquid seeps out from the lid. can be done.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

With a view to achieving a lid that can easily be fitted to a container, easily be disposed of or recycled, and easily be produced, a lid 1 for covering and sealing a container 5, which has an outwardly protruding ring-shaped reinforcement rim 4 provided to an upper end of an upward-opened opening 3, comprises: a lid top part 6 which covers the opening 3 of the container 5; and a lid wall part 7 which is externally fitted to a barrel wall part 2 of the container 5. The lid top part 6 has provided to the outer circumference thereof an upward close-attaching wall portion 8 that is to fit inside the barrel wall part 2 of the container 5 and that is closely attachable to the interior surface of the barrel wall part 2. The lid wall part 7 is formed in such a manner as to be bent in an inverted U-shape outwardly from the upper end of the upward close-attaching wall portion 8, and the lid wall part 7 has formed therein a ring-shaped recess 9 that is to be fitted onto the reinforcement rim 4. The lid top part 6 and the lid wall part 7 are formed from a single piece of paper material by draw molding.

Description

蓋lid
　本発明は、上方に開口する開口部の上端に外側へ突出したリング状の補強縁が設けられた容器に装着し密閉する蓋に関する。 The present invention relates to a lid that is attached to and seals a container provided with a ring-shaped reinforcing rim protruding outward from the upper end of an opening that opens upward.
　蓋付容器として、容器に、胴壁部の上方に開口する開口部の上端に、胴壁部の上端部を外側方向へカーリングして胴壁部の外側へ突出したリング状の補強縁を設け、蓋には、容器の胴壁部の外側に嵌合する蓋壁部に容器の補強縁に嵌合するリング状凹部を設けた蓋付容器が広く知られている。
　かかる蓋付容器の蓋は、密閉性や成型の容易さからその殆どがプラスチック製となっている（例えば、特許文献１，２参照。） As a lidded container, the container is provided with a ring-shaped reinforcing rim that protrudes outward from the body wall by curling the upper end of the body wall toward the outside at the upper end of the opening that opens upward from the body wall. 2. Description of the Related Art A container with a lid is widely known in which a lid wall portion fitted to the outer side of the body wall portion of the container is provided with a ring-shaped concave portion that fits into the reinforcing edge of the container.
The lids of such lidded containers are mostly made of plastic because of their airtightness and ease of molding (see, for example, Patent Documents 1 and 2).
特開２００４－１８９２号公報Japanese Unexamined Patent Application Publication No. 2004-1892 特開２０１９－７７４７５号公報JP 2019-77475 A
　近年、プラスチック製品のゴミによる環境汚染といった問題が大きく取り上げられるに至り、かかる問題の解決手段の１つとして、プラスチックに代わる廃棄やリサイクルが容易に行える材料で製造された製品が様々な分野で求められている。 In recent years, the problem of environmental pollution caused by garbage from plastic products has become a major issue, and as one means of solving this problem, products manufactured from materials that can be easily disposed of and recycled instead of plastic are being sought in various fields. It is
　上記の構造を有する蓋付の容器にあって、容器の方は紙製のものがあるが、蓋にあっては上記のように密閉性や成型の容易さといった点からプラスチック製が殆どであり、廃棄された蓋が環境汚染につながるといった問題があった。 Among the containers with lids having the above structure, some are made of paper, but most of the lids are made of plastic in terms of sealing performance and ease of molding as described above. , there is a problem that the discarded lid leads to environmental pollution.
　本発明の目的は、容器への装着が容易であり、また、廃棄やリサイクルが容易に行え、さらには製造が容易な蓋を提供することにある。 An object of the present invention is to provide a lid that is easy to attach to a container, easy to discard or recycle, and easy to manufacture.
　上記の目的を達成するために、請求項１に記載の発明は、上方に開口する開口部の上端に外側へ突出したリング状の補強縁が設けられた容器に被せ密閉する蓋であって、容器の開口部を覆う蓋天部と、前記容器の胴壁部に外嵌合する蓋壁部とからなり、前記蓋天部はその外周に前記容器の前記胴壁部内に嵌合し前記胴壁部内面に密着可能な上向き密着壁部を有し、前記蓋壁部は、前記上向き密着壁部の上端から外側に逆Ｕ字状に曲げられて形成され、前記蓋壁部には前記補強縁と嵌合するリング状凹部を有しており、前記蓋天部と前記蓋壁部は１枚の紙素材から絞り成型により形成されていることを特徴とする。 In order to achieve the above object, the invention according to claim 1 is a lid that covers and seals a container provided with a ring-shaped reinforcing edge projecting outward from the upper end of an opening that opens upward, It comprises a lid top portion covering the opening of the container, and a lid wall portion externally fitted to the body wall portion of the container. The cover wall portion is formed by bending an upper end of the upward close contact wall portion outward in an inverted U shape, and the cover wall portion is provided with the reinforcement. It is characterized in that it has a ring-shaped concave portion that fits with the rim, and that the lid top portion and the lid wall portion are formed by drawing from a sheet of paper material.
　請求項１に記載の発明によれば、前記蓋天部は、その外周に前記容器の前記胴壁部内に嵌合し前記胴壁部内面に密着可能な上向き密着壁部を有しているので、前記蓋を、前記蓋天部の内面側を容器の開口部に向けて押し下げることにより、前記蓋天部に有する前記上向き密着壁部が前記容器内に密に嵌合し、前記容器の開口部を確実に密封することができる。 According to the first aspect of the invention, the lid top portion has an upward contact wall portion on the outer periphery thereof, which is fitted into the body wall portion of the container and can be brought into close contact with the inner surface of the body wall portion. By pushing down the lid toward the opening of the container with the inner surface side of the lid top portion, the upward close contact wall portion of the lid top portion is tightly fitted into the container to close the opening of the container. part can be reliably sealed.
　また、前記蓋の押下げにより前記蓋壁部に有する前記リング状凹部が前記容器の前記補強縁により広げられ、前記リング状凹部内に前記補強縁が入り前記リング状凹部と前記補強縁が嵌合するが、前記蓋が紙素材の絞り成型により形成された際に前記リング状凹部を含む前記蓋壁部に生じた皺の伸縮、および紙素材自体の伸縮により前記リング状凹部が広がることから、前記容器の開口部への前記蓋の装着を容易に行うことができる。 Further, when the lid is pushed down, the ring-shaped recess provided in the lid wall portion is widened by the reinforcing edge of the container, and the reinforcing edge enters the ring-shaped recess and the ring-shaped recess and the reinforcing edge are fitted. This is because the ring-shaped recess expands due to the expansion and contraction of the wrinkles generated in the lid wall portion including the ring-shaped recess when the lid is formed by drawing the paper material, and the expansion and contraction of the paper material itself. , the lid can be easily attached to the opening of the container.
　また、前記天板部と前記胴部嵌合壁は１枚の紙素材から絞り成型により形成されているので容易に製造することができる。また、前記蓋は紙製なので、廃棄やリサイクルを容易に行うことができる。 In addition, since the top plate portion and the body portion fitting wall are formed by drawing from a sheet of paper material, they can be easily manufactured. Moreover, since the lid is made of paper, disposal and recycling can be easily performed.
　請求項２に記載の発明は、請求項１に記載の、前記紙素材は、少なくとも内面側に耐水処理が施されていることを特徴とする。 The invention according to claim 2 is characterized in that the paper material according to claim 1 is water-resistant treated at least on the inner surface side.
　請求項２に記載の発明によれば、前記紙素材は、少なくとも内面側に耐水処理が施されているので、前記容器に収容する内容物が液状物である場合、液状物が前記蓋からしみ出すといった事態を回避することができる。 According to the second aspect of the invention, the paper material is water-resistant at least on the inner surface side. It is possible to avoid the situation such as putting out.
　以上のように、本発明に係る蓋によれば、容器への装着が容易であり、また、廃棄やリサイクルが容易に行え、さらには容易に製造することができる。 As described above, according to the lid of the present invention, it is easy to attach to a container, easy to discard and recycle, and easy to manufacture.
本発明に係る蓋を示す一部縦断側面図である。It is a partial longitudinal side view which shows the lid|cover which concerns on this invention. 図１に示す蓋を使用する容器の一部縦断側面図である。Fig. 2 is a partial longitudinal side view of a container using the lid shown in Fig. 1; 図１に示す蓋で容器の開口部を閉じる過程を示す説明図である。1. It is explanatory drawing which shows the process which closes the opening part of a container with the lid|cover shown in FIG. 図１に示す蓋で容器の開口部を閉じた状態を示す一部拡大縦断面図である。2 is a partially enlarged longitudinal sectional view showing a state in which the opening of the container is closed with the lid shown in FIG. 1; FIG.
　以下、本発明に係る容器の実施の形態の一例について図面を参照して詳細に説明する。
　図１本発明に係る蓋を示す一部縦断側面図、図２は図１に示す蓋を使用する容器の一部縦断側面図、図３は図１に示す蓋で容器の開口部を閉じる過程を示す説明図、図４は図１に示す蓋で容器の開口部を閉じた状態を示す一部拡大縦断面図である。 Hereinafter, an example of an embodiment of a container according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a partial longitudinal side view showing the lid according to the present invention, FIG. 2 is a partial longitudinal side view of a container using the lid shown in FIG. 1, and FIG. 3 is a process of closing the opening of the container with the lid shown in FIG. 4 is a partially enlarged longitudinal sectional view showing a state in which the opening of the container is closed with the lid shown in FIG.
　本例の蓋１は、胴壁部２の上方に開口する開口部３の上端に、胴壁部２の上端部を外側方向へカーリングして胴壁部２の外側へ突出したリング状の補強縁４が設けられた容器５に被せ、開口部３を閉塞する蓋１である。 The lid 1 of the present embodiment has a ring-shaped reinforcement projecting outward from the shell wall portion 2 by curling the upper end of the shell wall portion 2 outward at the upper end of the opening 3 opening upwardly of the shell wall portion 2 . A lid 1 that covers a container 5 provided with a rim 4 and closes an opening 3 .
　蓋１は、容器５の開口部３を覆う蓋天部６と、容器５の胴壁部２に外嵌合する蓋壁部７とからなる。蓋天部６は、その外周に容器５の胴壁部２内に嵌合し胴壁部２の内面に密着可能な筒状の上向き密着壁部８を有している。また、蓋壁部７は、上向き密着壁部８の上端から外側に逆Ｕ字状に曲げられて形成され、そして、蓋壁部７には逆Ｕ字状の折り曲げに続き、さらに内側方向にカーリングし、容器５の胴壁部２の開口部３上端に設けられた補強縁４と嵌合するリング状凹部９を有している。
　より好ましい態様としては、リング状凹部９に続き、リング状凹部９の下端から下斜め外側方向へ向かって広がる袴部１０を有している。蓋壁部７にリング状凹部９の下端から下斜め外側方向へ向かって広がりを有する袴部１０を有することにより、リング状凹部９よりも先に袴部１０の傾斜する内面が容器５の補強縁４に当接し、補強縁４が傾斜する袴部１０の内面を滑るようにして袴部１０を押し広げることになるので、袴部１０は容易に広げられ、袴部１０の広がりに伴ってリング状凹部９が広がることから、容器５の開口部３への蓋１の装着を容易に行うことができる。また、袴部１０を設けることにより、蓋１を自動蓋閉め機に用いる際に機械への装填、および蓋閉め工程での取り出し時における工程トラブルが削減される。
　袴部１０の長さにあっては特に限定されないが、１ｍｍ以上であることが好ましく、より好ましくは３ｍｍ以上、さらに好ましくは５ｍｍ以上である。上限としては１００ｍｍ以下が好ましく、５０ｍｍ以下がより好ましく、３０ｍｍ以下がさらに好ましい。 The lid 1 is composed of a lid top portion 6 covering the opening 3 of the container 5 and a lid wall portion 7 externally fitted to the body wall portion 2 of the container 5 . The lid top portion 6 has, on its outer periphery, a cylindrical upward contact wall portion 8 that can be fitted into the body wall portion 2 of the container 5 and can be in close contact with the inner surface of the body wall portion 2 . Further, the lid wall portion 7 is formed by bending outward in an inverted U shape from the upper end of the upward contact wall portion 8 , and the lid wall portion 7 is bent in an inverted U shape and then further inwardly. It has a ring-shaped concave portion 9 which is curled and fitted with a reinforcing edge 4 provided at the upper end of the opening 3 of the body wall portion 2 of the container 5 .
As a more preferable embodiment, the ring-shaped recessed portion 9 is followed by a skirt portion 10 that spreads from the lower end of the ring-shaped recessed portion 9 in the downward obliquely outward direction. By providing the cover wall portion 7 with the skirt portion 10 that spreads outward from the lower end of the ring-shaped recessed portion 9, the inclined inner surface of the skirt portion 10 reinforces the container 5 before the ring-shaped recessed portion 9. Since the skirt portion 10 is spread out by contacting the edge 4 and the reinforcement edge 4 slides on the inclined inner surface of the skirt portion 10, the skirt portion 10 can be easily spread as the skirt portion 10 spreads. Since the ring-shaped concave portion 9 is widened, it is possible to easily attach the lid 1 to the opening portion 3 of the container 5 . In addition, by providing the skirt portion 10, when the lid 1 is used in an automatic lid closing machine, process troubles during loading into the machine and removal in the lid closing process can be reduced.
Although the length of the skirt portion 10 is not particularly limited, it is preferably 1 mm or longer, more preferably 3 mm or longer, and even more preferably 5 mm or longer. The upper limit is preferably 100 mm or less, more preferably 50 mm or less, and even more preferably 30 mm or less.
　本例の蓋１は紙製であり、本例で使用する紙素材としては、後述する絞り成型を容易にするため、ＪＩＳ　Ｐ　８１１３に規定された縦方向の破断伸びが好ましくは０．５～４．５％であり、より好ましくは１．０～４．０％であるとともに、横方向の破断伸びが好ましくは２．５～８．５％であり、より好ましくは３．０～８．０％である。また、ＪＩＳ　Ｐ　８１１３に規定された縦方向の引張強さが好ましくは３．０～３０．０ｋＮ／ｍであり、より好ましくは５．０～２８．０ｋＮ／ｍであるとともに、横方向の引張強さが好ましくは２．０～２０．０ｋＮ／ｍであり、より好ましくは３．０～１８．０ｋＮ／ｍである。
　破断伸びおよび引張強さが上記の値未満であると絞り加工時に絞り部位に裂けが発生するおそれがあり、また上記の値を超えると弾性復元力が弱く、この結果、蓋１のリング状凹部９と容器５の補強縁４との嵌合力が弱くなり、補強縁４からリング状凹部９が外れ易くなる。 The lid 1 of this example is made of paper, and the paper material used in this example preferably has a longitudinal breaking elongation of 0.5 to 0.5 as specified in JIS P 8113 in order to facilitate draw molding, which will be described later. 4.5%, more preferably 1.0 to 4.0%, and the breaking elongation in the transverse direction is preferably 2.5 to 8.5%, more preferably 3.0 to 8.0%. 0%. In addition, the longitudinal tensile strength specified in JIS P 8113 is preferably 3.0 to 30.0 kN/m, more preferably 5.0 to 28.0 kN/m, and the transverse tensile strength The strength is preferably 2.0-20.0 kN/m, more preferably 3.0-18.0 kN/m.
If the breaking elongation and tensile strength are less than the above values, there is a risk of tearing at the drawn portion during drawing, and if the above values are exceeded, the elastic restoring force is weak, and as a result, the ring-shaped recess of the lid 1 The fitting force between 9 and the reinforcing edge 4 of the container 5 is weakened, and the ring-shaped concave portion 9 is easily removed from the reinforcing edge 4 .
　また、本例では、紙素材には耐水処理が施されている。耐水処理は、少なくとも紙素材の内面側に施されていればよい。耐水処理にあっては、紙素材の少なくとも内面側に、熱可塑性樹脂をラミネートまたはコーティングして熱可塑性樹脂層を積層したものや、パラフィン、蜜蝋、シリコーン樹脂、フッソ樹脂、ロジン系サイズ剤、アルキルケテンダイマー、湿潤紙力剤などの耐水化剤、スチレン系樹脂、アクリル系樹脂、ポリオレフィン系樹脂等を含む防水剤を塗工、含浸、印刷、含有させたものが挙げられる。 Also, in this example, the paper material is water-resistant. It is sufficient that at least the inner surface of the paper material is subjected to the water-resistant treatment. For water resistance treatment, at least the inner surface of the paper material is laminated or coated with a thermoplastic resin layer to laminate a thermoplastic resin layer, paraffin, beeswax, silicone resin, fluorine resin, rosin-based sizing agent, alkyl Examples include those obtained by coating, impregnating, printing, or containing waterproofing agents such as ketene dimer and wet paper strength agents, and waterproofing agents including styrene-based resins, acrylic-based resins, polyolefin-based resins, and the like.
　紙素材からの蓋１の形成にあっては、蓋天部６に有する上向き密着壁部８、蓋壁部７を形成する逆Ｕ字状の折り曲げ、蓋壁部７に有するリング状凹部９及び袴部１０は、１枚の紙素材から絞り成型により形成されている。
　使用する紙素材として、前述のとおり、縦方向の破断伸びが０．５～４．５％、横方向の破断伸びが２．５～８．５％、縦方向の引張強さが３．０～３０．０ｋＮ／ｍ、横方向の引張強さが２．０～２０．０ｋＮ／ｍの紙を使用することにより、絞り部位に裂けの発生がなく、蓋１のリング状凹部９と容器５の補強縁４との嵌合力の強い蓋１が得られる。 In the formation of the lid 1 from the paper material, the upward contact wall portion 8 provided in the lid top portion 6, the inverted U-shaped bending forming the lid wall portion 7, the ring-shaped concave portion 9 provided in the lid wall portion 7, and the The hakama part 10 is formed by drawing from a sheet of paper material.
As described above, the paper material used has a longitudinal breaking elongation of 0.5 to 4.5%, a transverse breaking elongation of 2.5 to 8.5%, and a longitudinal tensile strength of 3.0. ~30.0 kN / m, by using a paper with a tensile strength in the transverse direction of 2.0 ~ 20.0 kN / m, there is no tearing at the squeezed part, and the ring-shaped recess 9 of the lid 1 and the container 5 The lid 1 having a strong fitting force with the reinforcing edge 4 of is obtained.
　このように構成された蓋１によれば、蓋天部６は、容器５の胴壁部２内に嵌合し胴壁部２の内面に密着可能な上向き密着壁部８を有しているので、蓋１を、蓋天部６の内面側を容器５の開口部３に向けて押し下げることにより、蓋天部６に有する上向き密着壁部８が容器５内に密に嵌合し、容器５の開口部３を確実に密封することができる。 According to the lid 1 configured in this manner, the lid top portion 6 has an upward close contact wall portion 8 that can be fitted into the body wall portion 2 of the container 5 and can be brought into close contact with the inner surface of the body wall portion 2 . Therefore, by pushing down the lid 1 with the inner surface side of the lid top portion 6 facing the opening portion 3 of the container 5, the upward close contact wall portion 8 of the lid top portion 6 is tightly fitted into the container 5, and the container is closed. The opening 3 of 5 can be reliably sealed.
　また、蓋１の押下げにより蓋壁部７に有するリング状凹部９が容器５の補強縁４により広げられ、リング状凹部９内に補強縁４が入りリング状凹部９と補強縁４が嵌合するが、蓋１が紙素材の絞り成型により形成された際にリング状凹部９を含む蓋壁部７に生じた皺の伸縮、および紙素材自体の伸縮によりリング状凹部９が広がることから、リング状凹部９の広がりが容易となり、補強縁４との嵌合を容易に行うことができる。 When the lid 1 is pushed down, the ring-shaped recess 9 provided in the lid wall portion 7 is widened by the reinforcing edge 4 of the container 5, and the reinforcing edge 4 enters the ring-shaped recess 9. The ring-shaped recess 9 and the reinforcing edge 4 are fitted. However, since the ring-shaped recess 9 expands due to the expansion and contraction of the wrinkles generated in the lid wall portion 7 including the ring-shaped recess 9 when the lid 1 is formed by drawing the paper material, and the expansion and contraction of the paper material itself. , the ring-shaped concave portion 9 can be easily widened, and fitting with the reinforcing edge 4 can be easily performed.
　また、蓋１は１枚の紙素材から形成されており、蓋天部６に有する上向き密着壁部８、蓋壁部７を形成する逆Ｕ字状の折り曲げ、蓋壁部７に有するリング状凹部９及び袴部１０は絞り成型により形成されるので、容易に製造することができ、また、紙製なので廃棄やリサイクルを容易に行うことができる。 In addition, the lid 1 is formed from a sheet of paper material, and includes an upward contact wall portion 8 on the lid top portion 6, an inverted U-shaped bent to form the lid wall portion 7, and a ring shape on the lid wall portion 7. Since the concave portion 9 and the skirt portion 10 are formed by draw molding, they can be easily manufactured, and since they are made of paper, disposal and recycling can be easily performed.
　また、本例では、蓋１を形成する紙素材には耐水処理が施されている容器５に収容する内容物が液状物である場合、液状物が前記蓋からしみ出すといった事態を回避することができる。 Further, in this example, when the contents contained in the container 5 are water-resistant, the paper material forming the lid 1 is a liquid, so that the liquid seeps out from the lid. can be done.
１　蓋
２　胴壁部
３　開口部
４　補強縁
５　容器
６　蓋天部
７　蓋壁部
８　上向き密着壁部
９　リング状凹部
１０　袴部
                                                                                 1 Lid 2 Body wall 3 Opening 4 Reinforcing rim 5 Container 6 Lid top 7 Lid wall 8 Upward contact wall 9 Ring-shaped recess 10 Skirt

Claims (2)

  1. 　上方に開口する開口部の上端に外側へ突出したリング状の補強縁が設けられた容器に被せ密閉する蓋であって、容器の開口部を覆う蓋天部と、前記容器の胴壁部に外嵌合する蓋壁部とからなり、前記蓋天部は、その外周に前記容器の前記胴壁部内に嵌合し前記胴壁部内面に密着可能な上向き密着壁部を有し、前記蓋壁部は前記上向き密着壁部の上端から外側に逆Ｕ字状に曲げられて形成され、前記蓋壁部には前記補強縁と嵌合するリング状凹部を有しており、前記蓋天部と前記蓋壁部は１枚の紙素材から絞り成型により形成されていることを特徴とする蓋。 A lid that covers and seals a container provided with a ring-shaped reinforcing edge protruding outward from the upper end of an opening that opens upward, the lid top covering the opening of the container, and the body wall portion of the container The lid top portion has an upward contact wall portion that fits into the body wall portion of the container on its outer periphery and can be in close contact with the inner surface of the body wall portion. The wall portion is formed by bending outward from the upper end of the upward contact wall portion in an inverted U shape, and the lid wall portion has a ring-shaped concave portion to be fitted with the reinforcing edge, and the lid top portion. and the lid wall portion is formed by drawing from a sheet of paper material.
  2. 　前記紙素材は、少なくとも内面側に耐水処理が施されていることを特徴とする請求項１に記載の蓋。
                                                                                         2. The lid according to claim 1, wherein at least the inner surface of said paper material is subjected to water-resistant treatment.
PCT/JP2022/007199 2021-02-22 2022-02-22 Lid WO2022177022A1 (en)

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JP2021026757A JP2022128302A (en) 2021-02-22 2021-02-22 lid

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024161679A1 (en) * 2023-01-30 2024-08-08 東罐興業株式会社 Paper lid

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08156955A (en) * 1994-12-05 1996-06-18 Tsuruoka Shigyo Kk Paper lid, its manufacture and its manufacturing device
JP2007039093A (en) * 2005-08-04 2007-02-15 Oji Paper Co Ltd Paper lid for container
US20130248481A1 (en) * 2010-11-30 2013-09-26 Huhtamaki Oyj Lid made of fibrous material
JP2019077475A (en) * 2017-10-25 2019-05-23 株式会社日本デキシー Molded lid and paper cup
CN110844308A (en) * 2019-12-19 2020-02-28 瑞安市贝斯特机械有限公司 Anti-leakage paper cover
WO2020049769A1 (en) * 2018-09-04 2020-03-12 東罐興業株式会社 Paper lid
WO2020141673A1 (en) * 2019-01-03 2020-07-09 조인석 Method for manufacturing disposable container paper lid and disposable container paper lid

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08156955A (en) * 1994-12-05 1996-06-18 Tsuruoka Shigyo Kk Paper lid, its manufacture and its manufacturing device
JP2007039093A (en) * 2005-08-04 2007-02-15 Oji Paper Co Ltd Paper lid for container
US20130248481A1 (en) * 2010-11-30 2013-09-26 Huhtamaki Oyj Lid made of fibrous material
JP2019077475A (en) * 2017-10-25 2019-05-23 株式会社日本デキシー Molded lid and paper cup
WO2020049769A1 (en) * 2018-09-04 2020-03-12 東罐興業株式会社 Paper lid
WO2020141673A1 (en) * 2019-01-03 2020-07-09 조인석 Method for manufacturing disposable container paper lid and disposable container paper lid
CN110844308A (en) * 2019-12-19 2020-02-28 瑞安市贝斯特机械有限公司 Anti-leakage paper cover

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