JP6454186B2 - Container with lid - Google Patents
Container with lid Download PDFInfo
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- JP6454186B2 JP6454186B2 JP2015049321A JP2015049321A JP6454186B2 JP 6454186 B2 JP6454186 B2 JP 6454186B2 JP 2015049321 A JP2015049321 A JP 2015049321A JP 2015049321 A JP2015049321 A JP 2015049321A JP 6454186 B2 JP6454186 B2 JP 6454186B2
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- 230000002093 peripheral effect Effects 0.000 claims description 59
- 239000000463 material Substances 0.000 claims description 11
- 230000007423 decrease Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 17
- 238000007689 inspection Methods 0.000 description 10
- 230000002265 prevention Effects 0.000 description 3
- 241000723377 Coffea Species 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000227999 Coffea canephora Species 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
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Description
本発明は、飲料用等の蓋付き容器に関する。 The present invention relates to a lidded container for beverages and the like.
従来より、飲料用等の容器においては、所謂「ＬＩＤ（リッド）」と呼ばれる合成樹脂製の蓋部材を容器の開口部側に被せることが行われている（例えば特許文献１を参照）。 Conventionally, in containers for beverages or the like, a so-called “LID (lid)” lid member made of a synthetic resin is placed on the opening side of the container (see, for example, Patent Document 1).
この蓋部材には、天板部の周縁から垂下する蓋環状周部が形成されており、容器の容器胴部の上端に形成された容器口部の外周に、蓋環状周部に形成された蓋嵌合部を外嵌させることにより、容器に内容液を入れた状態で、自動販売機や販売店等から容器を持ち運ぶ際に、容器外部に内容液が漏れ出ることを防止している。 In this lid member, a lid annular peripheral portion that hangs down from the periphery of the top plate portion is formed, and the lid annular peripheral portion is formed on the outer periphery of the container mouth portion formed at the upper end of the container body portion of the container. By externally fitting the lid fitting portion, the content liquid is prevented from leaking outside the container when the container is carried from a vending machine or a store with the content liquid being put in the container.
ところが、蓋嵌合部の形状は、容器口部の形状に合わせて形成されているものの、容器に蓋部材を嵌合させた状態で、容器口部の外面と蓋嵌合部の内面との間には僅かな隙間が生じており、蓋付き容器を大きく傾けた場合には、前記隙間が内容液の漏出経路となり、容器外部に内容液が漏れ出てしまう。 However, although the shape of the lid fitting portion is formed in accordance with the shape of the container mouth portion, in the state where the lid member is fitted to the container, the outer surface of the container mouth portion and the inner surface of the lid fitting portion are There is a slight gap between them, and when the lidded container is tilted greatly, the gap becomes a leakage path for the content liquid, and the content liquid leaks outside the container.
しかしながら、このような内容液の漏出は、蓋付き容器を大きく傾斜させた場合にのみ生じるものであることから、従来は甘受されてきたが、近年、コンビニエンスストア等においてコーヒー等を蓋付き容器に入れて販売することが普及してきたことから、蓋付き容器の需要が高まってきており、この需要の高まりに応じて、内容液の漏出防止に対する要求水準も高まってきている。また、同時に、このような蓋付き容器では、低価格で販売されるコーヒー等に用いられるものであることから、低コスト化に対する要求も強い。 However, since the leakage of the content liquid occurs only when the lidded container is greatly tilted, it has been accepted in the past, but recently, coffee or the like has been put into a lidded container at a convenience store or the like. Since the spread and sale of such containers has become widespread, the demand for containers with lids has increased, and the level of demand for prevention of leakage of content liquids has increased in accordance with the increase in demand. At the same time, such a container with a lid is used for coffee or the like sold at a low price, so there is a strong demand for cost reduction.
そこで、本発明は、これらの問題点を解決するものであり、簡素な構成、低コスト、および、容器口部に対する蓋嵌合部の着脱の容易性を維持しつつ、内容液の漏出を抑制する蓋付き容器を提供することを目的とするものである。 Accordingly, the present invention solves these problems, and suppresses leakage of the content liquid while maintaining a simple configuration, low cost, and ease of attachment / detachment of the lid fitting portion with respect to the container mouth portion. The object is to provide a container with a lid.
本発明は、紙基材層を含む紙コップとして形成された容器と、前記容器に被せられる蓋部材とを備えた蓋付き容器であって、前記容器は、ブランク材の両端を重ねて付着した筒状の容器胴部と、容器底部と、前記容器胴部の上端を外側に丸めた容器口部とを有し、前記容器口部は、前記ブランク材の両端が重なった重複部と、前記重複部の側方に形成された段差部に隣接する段差隣接部とを有し、前記蓋部材は、前記容器口部に着脱自在に外嵌する蓋嵌合部を有し、前記蓋嵌合部は、前記容器口部の口部内周面に対向して配置される内側対向部と、前記容器口部の口部外周面に対向して配置される外側対向部とを有し、前記外側対向部は、前記口部外周面の下部に対向して配置され、上方から下方に向けて縮径するアンダーカット部を有し、前記内側対向部の最内周部分の外径は、前記口部内周面の内径よりも０〜０．８ｍｍ大きく設定され、前記外側対向部の最外周部分の内径は、前記口部外周面の外径よりも０．４〜２．０ｍｍ小さく設定され、前記蓋嵌合部は、前記容器口部に嵌合した状態で、前記容器口部に対して、前記アンダーカット部および前記内側対向部の少なくとも２箇所で接触することにより、前記課題を解決するものである。
The present invention is a container with a lid provided with a container formed as a paper cup including a paper base material layer, and a lid member that covers the container, and the container is attached by overlapping both ends of a blank material. It has a cylindrical container body, a container bottom, and a container mouth rounded to the outside at the upper end of the container body, the container mouth is an overlapping portion where both ends of the blank material overlap, A step adjacent portion adjacent to the step portion formed on the side of the overlapping portion, and the lid member has a lid fitting portion that is detachably fitted to the container mouth portion, and the lid fitting The portion includes an inner facing portion disposed to face the inner peripheral surface of the mouth portion of the container mouth portion, and an outer facing portion disposed to face the outer peripheral surface of the mouth portion of the container mouth portion, The facing portion is disposed opposite to the lower portion of the outer peripheral surface of the mouth portion, and has an undercut portion that decreases in diameter from above to below, The outer diameter of the innermost peripheral portion of the inner facing portion is set to 0 to 0.8 mm larger than the inner diameter of the inner peripheral surface of the mouth portion, and the inner diameter of the outermost peripheral portion of the outer facing portion is set to the outer peripheral surface of the mouth portion. The lid fitting portion is set to be smaller by 0.4 to 2.0 mm than the outer diameter, and the undercut portion and the inner facing portion are in the state fitted to the container mouth portion with respect to the container mouth portion. The said subject is solved by contacting at least 2 places of these.
本請求項１に係る発明によれば、容器口部に着脱自在に嵌合する蓋嵌合部が、容器口部の口部内周面に対向して配置される内側対向部と、容器口部の口部外周面に対向して配置される外側対向部とを有し、外側対向部が、口部外周面の下部に対向して配置され、上方から下方に向けて縮径するアンダーカット部を有し、内側対向部の最内周部分の外径が、口部内周面の内径よりも０〜０．８ｍｍ大きく設定され、外側対向部の最外周部分の内径が、口部外周面の外径よりも０．４〜２．０ｍｍ小さく設定され、蓋嵌合部が、容器口部に嵌合した状態で、容器口部に対して、アンダーカット部および内側対向部の少なくとも２箇所で接触するように構成されている。
これにより、容器口部の重複部や、重複部および段差隣接部以外の容器口部の一般部において、蓋部材のアンダーカット部および内側対向部の少なくとも２箇所を容器口部に対して確実に接触させることが可能であるばかりでなく、容器口部の段差隣接部において容器口部の外面と蓋嵌合部の内面との間に生じがちな漏出経路（隙間）の大きさ（断面積）を小さく維持し、表面張力の作用によって内容液の漏出を阻止することが可能であるため、簡素な構成、低コスト、および、容器口部に対する蓋嵌合部の着脱の容易性を維持しつつ、内容液の漏出を抑制することができる。
According to the first aspect of the present invention, the lid fitting portion that is detachably fitted to the container mouth portion includes the inner facing portion that is disposed to face the inner peripheral surface of the mouth portion of the container mouth portion, and the container mouth portion. And an outer facing portion disposed opposite to the outer peripheral surface of the mouth portion, and the outer facing portion is disposed opposite to the lower portion of the outer peripheral surface of the mouth portion, and the diameter is reduced from above to below. The outer diameter of the innermost peripheral portion of the inner facing portion is set to be 0 to 0.8 mm larger than the inner diameter of the inner peripheral surface of the mouth portion, and the inner diameter of the outermost peripheral portion of the outer facing portion is set to the outer peripheral surface of the mouth portion. It is set to be smaller by 0.4 to 2.0 mm than the outer diameter, and the lid fitting portion is fitted to the container mouth portion, and at least two locations of the undercut portion and the inner facing portion with respect to the container mouth portion. It is comprised so that it may contact.
Thereby, in the overlapping part of the container mouth part and the general part of the container mouth part other than the overlapping part and the step adjacent part, at least two places of the undercut part and the inner facing part of the lid member are surely provided with respect to the container mouth part. The size (cross-sectional area) of the leakage path (gap) that is likely to occur between the outer surface of the container mouth and the inner surface of the lid fitting portion at the step adjacent portion of the container mouth as well as being able to make contact Can be kept small and leakage of the contents liquid can be prevented by the action of surface tension, so that the simple configuration, low cost, and easy attachment / detachment of the lid fitting portion to the container mouth portion can be maintained. , Leakage of the content liquid can be suppressed.
以下に、本発明の一実施形態に係る蓋付き容器１０について、図面に基づいて説明する。 Below, container 10 with a lid concerning one embodiment of the present invention is explained based on a drawing.
まず、蓋付き容器１０は、紙基材層や樹脂フィルム層等を含むブランク材から成る紙コップとして構成され、図１に示すように、上端側が開口した容器２０と、容器２０の開口側に被せられる蓋部材６０とから構成されている。 First, the lidded container 10 is configured as a paper cup made of a blank material including a paper base material layer, a resin film layer, and the like. As shown in FIG. It is comprised from the cover member 60 covered.
容器２０は、図２や図３に示すように、ブランク材の両端を重ねて付着したサイドシーム部３１を有した筒状の容器胴部３０と、筒状の容器胴部３０の下端側に形成された容器底部４０とを有している。 As shown in FIG. 2 and FIG. 3, the container 20 has a cylindrical container body 30 having a side seam portion 31 that is attached by overlapping both ends of the blank material, and a lower end side of the cylindrical container body 30. And a container bottom 40 formed.
容器胴部３０の上端には、図２や図３に示すように、容器胴部３０の上端を外側に丸めた容器口部５０が形成されている。容器口部５０は、図２に示すように、ブランク材の両端が重なった重複部５１と、容器胴部３０の胴部周方向において重複部５１の側方に形成された段差部５２と、胴部周方向において段差部５２に隣接する段差隣接部５３と、重複部５１、段差部５２、段差隣接部５３以外の部分である一般部５４とを有している。 As shown in FIG. 2 and FIG. 3, a container mouth part 50 is formed at the upper end of the container body part 30 by rounding the upper end of the container body part 30 outward. As shown in FIG. 2, the container mouth portion 50 includes an overlapping portion 51 in which both ends of the blank material overlap each other, a step portion 52 formed on the side of the overlapping portion 51 in the circumferential direction of the body portion of the container body portion 30, and A step adjacent portion 53 adjacent to the stepped portion 52 in the circumferential direction of the trunk portion, and an overlapping portion 51, a stepped portion 52, and a general portion 54 other than the step adjacent portion 53 are provided.
ここで、段差隣接部５３の範囲は、容器２０に蓋部材６０を嵌合させた状態で、容器口部５０に段差部５２が形成されることに起因して、容器口部５０の外面と蓋嵌合部６３の内面との間に形成される漏出経路（隙間）を含む範囲であり、具体的には、容器口径：７９ｍｍの容器２０（段差部５２の寸法：約０．２８ｍｍ）の場合に、段差部５２から胴部周方向に約３ｍｍ〜７ｍｍの範囲（換言すると、段差部５２から胴部周方向に、容器口径に対して３．８％〜８．９％の範囲）である。 Here, the range of the step adjacent portion 53 is that the stepped portion 52 is formed in the container mouth portion 50 in a state where the lid member 60 is fitted to the container 20, and the outer surface of the container mouth portion 50 is It is a range including a leakage path (gap) formed between the inner surface of the lid fitting portion 63, and specifically, a container 20 having a container diameter of 79 mm (dimension of the stepped portion 52: about 0.28 mm). In the case, in the range of about 3 mm to 7 mm in the circumferential direction from the stepped portion 52 (in other words, in the range of 3.8% to 8.9% from the stepped portion 52 in the circumferential direction of the barrel portion with respect to the container diameter). is there.
蓋部材６０は、所謂「ＬＩＤ（リッド）」と呼ばれる合成樹脂や紙などから成形された蓋として構成され、図１や図４に示すように、環状の外周縁を有した天板部６１と、天板部６１の外周縁から垂下する蓋環状周部６２とから構成されている。蓋環状周部６２には、容器口部５０の外面に着脱自在に外嵌する蓋嵌合部６３が形成されている。 The lid member 60 is configured as a lid formed from a synthetic resin called so-called “LID (lid)” or paper, and as shown in FIGS. 1 and 4, a top plate portion 61 having an annular outer peripheral edge The lid annular peripheral portion 62 hangs down from the outer peripheral edge of the top plate portion 61. The lid annular peripheral portion 62 is formed with a lid fitting portion 63 that is detachably fitted to the outer surface of the container mouth portion 50.
蓋嵌合部６３は、図４や図５に示すように、内側対向部６４と、上部６６およびアンダーカット部６７を含む外側対向部６５とを有している。
内側対向部６４は、下方から上方に向けて拡径した形状を有し、口部内周面５５に対向して配置される。
外側対向部６５の上部６６は、上方から下方に向けて拡径した形状を有し、口部外周面５６の上部に対向して配置される。
外側対向部６５のアンダーカット部６７は、上方から下方に向けて縮径した形状を有し、口部外周面５６の下部に対向して配置される。
外側対向部６５の上部６６の上端は、内側対向部６４の上端に連続し、アンダーカット部６７の上端は、外側対向部６５の上部６６の下端に連続する。
As shown in FIGS. 4 and 5, the lid fitting portion 63 includes an inner facing portion 64 and an outer facing portion 65 including an upper portion 66 and an undercut portion 67.
The inner facing portion 64 has a shape whose diameter is increased from below to above, and is disposed to face the mouth inner peripheral surface 55.
The upper portion 66 of the outer facing portion 65 has a shape whose diameter increases from the upper side to the lower side, and is disposed to face the upper portion of the mouth outer peripheral surface 56.
The undercut portion 67 of the outer facing portion 65 has a shape that is reduced in diameter from the upper side to the lower side, and is disposed to face the lower portion of the mouth outer peripheral surface 56.
The upper end of the upper portion 66 of the outer facing portion 65 is continuous with the upper end of the inner facing portion 64, and the upper end of the undercut portion 67 is continuous with the lower end of the upper portion 66 of the outer facing portion 65.
また、蓋嵌合部６３の形状は、容器口部５０の形状に対応して形成されており、すなわち、容器口部５０に蓋嵌合部６３を嵌合させた状態で、口部内周面５５に内側対向部６４が沿い、口部外周面５６の上部に外側対向部６５の上部６６が沿い、口部外周面５６の下部にアンダーカット部６７が沿うように、蓋嵌合部６３および容器口部５０の形状が設定されている。
具体的には、内側対向部６４の断面形状（上下方向を含む平面で切った断面形状）の少なくとも一部分が、口部内周面５５の断面形状と同様の曲率（同一または相似の曲率）で形成され、外側対向部６５の上部６６の断面形状の少なくとも一部分が、口部外周面５６の上部の断面形状と同様の曲率で形成され、アンダーカット部６７の断面形状の少なくとも一部分が、口部外周面５６の下部の断面形状と同様の曲率で形成されている。
これにより、容器口部５０に蓋嵌合部６３を嵌合させた状態で、容器口部５０の外面と蓋嵌合部６３の内面との間に生じる隙間を小さく維持することができる。詳しくは、隙間の断面積のうち、最小断面積が１．００ｍｍ２以下、望ましくは０．７５ｍｍ２以下、更に望ましくは０．５０ｍｍ２以下であれば良い。これにより、内容物の漏出がさらに抑制される。
Further, the shape of the lid fitting portion 63 is formed corresponding to the shape of the container mouth portion 50, that is, the mouth inner peripheral surface in a state where the lid fitting portion 63 is fitted to the container mouth portion 50. 55, the inner facing portion 64 is along, the upper portion 66 of the outer facing portion 65 is along the upper portion of the outer peripheral surface 56, and the undercut portion 67 is along the lower portion of the outer peripheral surface 56 of the mouth. The shape of the container mouth part 50 is set.
Specifically, at least a part of the cross-sectional shape (cross-sectional shape cut along a plane including the vertical direction) of the inner facing portion 64 is formed with the same curvature (same or similar curvature) as the cross-sectional shape of the mouth inner peripheral surface 55. At least a portion of the cross-sectional shape of the upper portion 66 of the outer facing portion 65 is formed with the same curvature as the cross-sectional shape of the upper portion of the outer peripheral surface 56 of the mouth, and at least a portion of the cross-sectional shape of the undercut portion 67 It is formed with the same curvature as the cross-sectional shape of the lower portion of the surface 56.
As a result, the gap generated between the outer surface of the container mouth portion 50 and the inner surface of the lid fitting portion 63 can be kept small with the lid fitting portion 63 fitted in the container mouth portion 50. Specifically, among the cross-sectional area of the gap, the minimum cross-sectional area of 1.00 mm 2 or less, preferably 0.75 mm 2 or less, as long more preferably 0.50 mm 2 or less. Thereby, the leakage of the contents is further suppressed.
次に、容器口部５０および蓋嵌合部６３の各部の寸法関係について、図３および図４に基づいて以下に説明する。 Next, the dimensional relationship of each part of the container mouth part 50 and the lid fitting part 63 is demonstrated below based on FIG. 3 and FIG.
まず、内側対向部６４の最内周部分の外径Ｄ１は、口部内周面５５（の最内周部分）の内径Ｄ２よりも、０〜０．８ｍｍ大きく設定されている。外径Ｄ１が内径Ｄ２よりも０．８ｍｍより大きく設定されていると、蓋嵌合部６３が容器口部５０に嵌まらず、蓋部材６０が容器２０から浮いてしまう。
また、外側対向部６５の最外周部分の内径Ｄ３は、口部外周面５６（の最外周部分）の外径Ｄ４よりも、０．４〜２．０ｍｍ小さく設定されている。
また上下方向を含む平面で切った場合の、外側対向部６５の周長Ｌ１は、口部外周面５６の周長Ｌ２の０．５〜１．５倍で設定されている。
ここで、上述した各寸法は、ブランク材の厚みを考慮しない設計寸法である。
そして、容器口部５０および蓋嵌合部６３の各部の寸法関係を上述したように設定することにより、蓋部材６０のアンダーカット部６７および内側対向部６４の少なくとも２箇所を容器口部５０に対して良好に接触させることが可能になる。
First, the outer diameter D1 of the innermost peripheral portion of the inner facing portion 64 is set to be 0 to 0.8 mm larger than the inner diameter D2 of the mouth inner peripheral surface 55 (the innermost peripheral portion thereof). When the outer diameter D1 is set to be larger than 0.8 mm than the inner diameter D2, the lid fitting portion 63 does not fit into the container mouth portion 50, and the lid member 60 floats from the container 20.
Further, the inner diameter D3 of the outermost peripheral portion of the outer facing portion 65 is set to be smaller by 0.4 to 2.0 mm than the outer diameter D4 of the mouth outer peripheral surface 56 (the outermost peripheral portion thereof).
Further, the circumferential length L1 of the outer facing portion 65 when cut along a plane including the vertical direction is set to 0.5 to 1.5 times the circumferential length L2 of the mouth outer peripheral surface 56.
Here, each dimension mentioned above is a design dimension which does not consider the thickness of a blank material.
Then, by setting the dimensional relationship between the respective parts of the container mouth part 50 and the lid fitting part 63 as described above, at least two places of the undercut part 67 and the inner facing part 64 of the lid member 60 are provided in the container mouth part 50. It becomes possible to make a favorable contact.
次に、蓋付き容器１０における内容液の漏出防止効果を確認するために行った検査結果について、以下に説明する。 Next, the test results performed to confirm the leakage prevention effect of the content liquid in the lidded container 10 will be described below.
＜検査条件＞
本検査では、検査液として８０℃のコーヒーを使用し、内容液２６０ｍｌの容器２０に対して１６０ｍｌの検査液を注入した後、検査液の液面を揺らし、蓋嵌合部６３の内面および容器口部５０の外面に検査液を触れさせ、その後、図８に示すように、段差隣接部５３を下方に向けた状態で蓋付き容器１０を約４５°傾け、液面が段差隣接部５３よりも上になった状態で固定し、３分間での漏れの有無を確認した。
<Inspection conditions>
In this inspection, 80 ° C. coffee is used as the inspection liquid, and after injecting 160 ml of the inspection liquid into the container 20 of the content liquid 260 ml, the liquid surface of the inspection liquid is shaken, and the inner surface of the lid fitting portion 63 and the container The test solution is brought into contact with the outer surface of the mouth 50, and then the container 10 with the lid is inclined by about 45 ° with the step adjacent portion 53 facing downward, as shown in FIG. It was fixed in a state where it was on the top, and the presence or absence of leakage in 3 minutes was confirmed.
＜検査対象＞
本検査では、図６に示す改良後の蓋付き容器１０と、図７に示す改良前の蓋付き容器１０の２種類の蓋付き容器１０を使用した。
図６に示す改良後の蓋付き容器１０は、内側対向部６４の外径Ｄ１が口部内周面５５の内径Ｄ２よりも０〜０．８ｍｍ大きく設定され、外側対向部６５の内径Ｄ３が口部外周面５６の外径Ｄ４よりも０．４〜２．０ｍｍ小さく設定され、外側対向部６５の周長Ｌ１が口部外周面５６の周長Ｌ２の０．８〜１．５倍で設定されている。
図７に示す改良前の蓋付き容器１０は、内側対向部６４の外径Ｄ１と口部内周面５５の内径Ｄ２との差が０ｍｍ未満に設定され、外側対向部６５の内径Ｄ３が口部外周面５６の外径Ｄ４よりも０〜０．４ｍｍ未満小さく設定され、外側対向部６５の周長Ｌ１が口部外周面５６の周長Ｌ２の０．８倍未満で設定されている。
<Inspection target>
In this inspection, two types of the lidded container 10 shown in FIG. 6 and the lidded container 10 before improvement shown in FIG. 7 were used.
In the container 10 with an improved lid shown in FIG. 6, the outer diameter D1 of the inner facing portion 64 is set to be 0 to 0.8 mm larger than the inner diameter D2 of the inner peripheral surface 55 of the mouth, and the inner diameter D3 of the outer facing portion 65 is the mouth. 0.4 to 2.0 mm smaller than the outer diameter D4 of the outer peripheral surface 56, and the peripheral length L1 of the outer facing portion 65 is set to 0.8 to 1.5 times the peripheral length L2 of the outer peripheral surface 56 of the mouth. Has been.
7, the difference between the outer diameter D1 of the inner facing portion 64 and the inner diameter D2 of the mouth inner peripheral surface 55 is set to be less than 0 mm, and the inner diameter D3 of the outer facing portion 65 is the mouth portion. It is set to be smaller than the outer diameter D4 of the outer peripheral surface 56 by less than 0 to 0.4 mm, and the peripheral length L1 of the outer facing portion 65 is set to be less than 0.8 times the peripheral length L2 of the mouth outer peripheral surface 56.
＜検査結果＞
上記の検査の結果については、図８に示す通りである。漏れの発生確率については、若干の改善が見られた。これに対して、漏れ発生までの時間については、時間が約１０倍延長される等、大きな改善が確認された。
<Inspection result>
About the result of said test | inspection, it is as showing in FIG. There was a slight improvement in the probability of leakage. On the other hand, regarding the time until the occurrence of leakage, a great improvement was confirmed such that the time was extended about 10 times.
以上、本発明の実施形態を詳述したが、本発明は上記実施形態に限定されるものではなく、特許請求の範囲に記載された本発明を逸脱することなく種々の設計変更を行なうことが可能である。
例えば、上述した実施形態では、容器口部の断面形状が略楕円形のものとして説明したが、容器口部の断面形状は、蓋嵌合部を良好に嵌合させることが可能なものであれば如何なるものでもよく、例えば、略円形のものや、略角形のものであってもよい。
また、上述した実施形態では、蓋嵌合部の内側対向部が、口部内周面の上部のみに対向するように形成されているが、内側対向部を口部内周面の下部に対向する位置まで形成してもよい。
また、段差隣接部において、容器口部の外面と蓋嵌合部の内面との間に生じる漏出経路（隙間）内に入り込んだ内容液を、表面張力の作用によって容器内側に後退させる力を発生させるために、段差隣接部の外面や蓋嵌合部の内面に、表面上に接した水との接触角が９０°より大きくなる撥水性を付与してもよい。
As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited to the said embodiment, A various design change can be performed without deviating from this invention described in the claim. Is possible.
For example, in the above-described embodiment, the cross-sectional shape of the container mouth portion has been described as having a substantially elliptical shape, but the cross-sectional shape of the container mouth portion may be capable of satisfactorily fitting the lid fitting portion. Any shape may be used, for example, a substantially circular shape or a substantially square shape may be used.
In the above-described embodiment, the inner facing portion of the lid fitting portion is formed so as to face only the upper portion of the inner peripheral surface of the mouth portion, but the position of the inner facing portion facing the lower portion of the inner peripheral surface of the mouth portion. May be formed.
In addition, at the step adjacent part, the force that causes the content liquid that has entered the leakage path (gap) generated between the outer surface of the container mouth part and the inner surface of the lid fitting part to retreat to the inside of the container by the action of surface tension is generated. Therefore, water repellency may be imparted to the outer surface of the step adjacent portion and the inner surface of the lid fitting portion so that the contact angle with water in contact with the surface is greater than 90 °.
１０ ・・・ 蓋付き容器
２０ ・・・ 容器
３０ ・・・ 容器胴部
３１ ・・・ サイドシーム部
４０ ・・・ 容器底部
５０ ・・・ 容器口部
５１ ・・・ 重複部
５２ ・・・ 段差部
５３ ・・・ 段差隣接部
５４ ・・・ 一般部
５５ ・・・ 口部内周面
５６ ・・・ 口部外周面
６０ ・・・ 蓋部材
６１ ・・・ 天板部
６２ ・・・ 蓋環状周部
６３ ・・・ 蓋嵌合部
６４ ・・・ 内側対向部
６５ ・・・ 外側対向部
６６ ・・・ 上部
６７ ・・・ アンダーカット部
Ｄ１ ・・・ 内側対向部の外径
Ｄ２ ・・・ 口部内周面の内径
Ｄ３ ・・・ 外側対向部の内径
Ｄ４ ・・・ 口部外周面の外径
Ｌ１ ・・・ 外側対向部の周長
Ｌ２ ・・・ 口部外周面の周長
DESCRIPTION OF SYMBOLS 10 ... Container with lid 20 ... Container 30 ... Container body part 31 ... Side seam part 40 ... Container bottom part 50 ... Container mouth part 51 ... Overlapping part 52 ... Step Part 53 ... Step adjacent part 54 ... General part 55 ... Mouth inner peripheral surface 56 ... Mouth outer peripheral surface 60 ... Lid member 61 ... Top plate part 62 ... Lid annular circumference Portion 63 ··· Lid fitting portion 64 · · · Inner facing portion 65 · · · Outer facing portion 66 · · · Upper portion 67 · · · Undercut portion D1 · · · Outer diameter of inner facing portion D2 · · · Port Inner diameter of the inner peripheral surface D3 ... Inner diameter of the outer facing portion D4 ... Outer diameter of the outer peripheral surface of the mouth L1 ... Perimeter of the outer facing portion L2 ... Perimeter of the outer peripheral surface of the mouth
Claims (1)
前記容器は、ブランク材の両端を重ねて付着した筒状の容器胴部と、容器底部と、前記容器胴部の上端を外側に丸めた容器口部とを有し、
前記容器口部は、前記ブランク材の両端が重なった重複部と、前記重複部の側方に形成された段差部に隣接する段差隣接部とを有し、
前記蓋部材は、前記容器口部に着脱自在に外嵌する蓋嵌合部を有し、
前記蓋嵌合部は、前記容器口部の口部内周面に対向して配置される内側対向部と、前記容器口部の口部外周面に対向して配置される外側対向部とを有し、
前記外側対向部は、前記口部外周面の下部に対向して配置され、上方から下方に向けて縮径するアンダーカット部を有し、
前記内側対向部の最内周部分の外径は、前記口部内周面の内径よりも０〜０．８ｍｍ大きく設定され、
前記外側対向部の最外周部分の内径は、前記口部外周面の外径よりも０．４〜２．０ｍｍ小さく設定され、
前記蓋嵌合部は、前記容器口部に嵌合した状態で、前記容器口部に対して、前記アンダーカット部および前記内側対向部の少なくとも２箇所で接触することを特徴とする蓋付き容器。 A container with a lid provided with a container formed as a paper cup including a paper base material layer, and a lid member covering the container;
The container has a cylindrical container body part that is attached by overlapping both ends of a blank material, a container bottom part, and a container mouth part that rounds the upper end of the container body part outwardly,
The container mouth portion has an overlapping portion where both ends of the blank material overlap, and a step adjacent portion adjacent to a step portion formed on the side of the overlapping portion,
The lid member has a lid fitting portion that is detachably fitted to the container mouth portion,
The lid fitting portion has an inner facing portion disposed to face the inner peripheral surface of the mouth portion of the container mouth portion, and an outer facing portion disposed to face the outer peripheral surface of the mouth portion of the container mouth portion. And
The outer facing portion is disposed opposite to the lower portion of the outer peripheral surface of the mouth, and has an undercut portion that decreases in diameter from above to below,
The outer diameter of the innermost peripheral portion of the inner facing portion is set to be 0 to 0.8 mm larger than the inner diameter of the inner peripheral surface of the mouth portion,
The inner diameter of the outermost peripheral portion of the outer facing portion is set to be 0.4 to 2.0 mm smaller than the outer diameter of the outer peripheral surface of the mouth,
The lid fitting part is in a state of being fitted to the container mouth part, and contacts the container mouth part at at least two locations of the undercut part and the inner facing part. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015049321A JP6454186B2 (en) | 2015-03-12 | 2015-03-12 | Container with lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015049321A JP6454186B2 (en) | 2015-03-12 | 2015-03-12 | Container with lid |
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| Publication Number | Publication Date |
|---|---|
| JP2016169023A JP2016169023A (en) | 2016-09-23 |
| JP6454186B2 true JP6454186B2 (en) | 2019-01-16 |
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| JP2015049321A Active JP6454186B2 (en) | 2015-03-12 | 2015-03-12 | Container with lid |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES3033552T3 (en) | 2019-07-30 | 2025-08-05 | Kikuo Yamada | Lid body |
| JP2022187339A (en) * | 2021-06-07 | 2022-12-19 | 天満紙器株式会社 | container with lid |
| JP2024076423A (en) * | 2022-11-25 | 2024-06-06 | 東罐興業株式会社 | Plastic lids and containers with lids |
| CN220721977U (en) * | 2023-08-31 | 2024-04-05 | 东莞中央化学有限公司 | Food packing box |
| WO2026048118A1 (en) * | 2024-08-28 | 2026-03-05 | 東罐興業株式会社 | Paper lid |
| WO2026048117A1 (en) * | 2024-08-28 | 2026-03-05 | 東罐興業株式会社 | Paper lid |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002166963A (en) * | 2000-09-21 | 2002-06-11 | Tokan Kogyo Co Ltd | Container lid |
| JP3080882U (en) * | 2001-04-05 | 2001-10-12 | ペーパーウェア株式会社 | Paper cup paper lid |
| JP4106316B2 (en) * | 2003-09-26 | 2008-06-25 | 株式会社アベシン | Paper container with lid for hot food and lid |
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