JP2012206765A - Cup-shaped container with closed lid state holding function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cup-shaped container with a closed lid state holding function that can achieve holding of a closed lid state after opening a part of a lid body with easy and inexpensive configuration and moreover with an easy operation.SOLUTION: The cup-shaped container includes a container body (2) of bottomed cup shape with a flange (5) circumferentially provided at the upper edge of a side wall (3), and the lid body (7) having a tab (8) projecting radially outward from the flange (5), and joined to the flange (5) to seal the container body (2). The flange (5) is formed with a folded part folded in a bottom direction of the container body (2), and a holding part (9) that can hold the tab (8) in the bent state is provided outside the side wall (3) and inside the folded part (5b) to set the partially opened lid body (7) into the closed lid state.

Description

  The present invention relates to a cup-shaped container used for packaging instant foods such as cup noodles, and in particular, peels off the lid to eat instant food, pours hot water, reseals the lid, and performs steaming cooking. It is related with the cup-shaped container with a closed state maintenance function which prevented the lid from opening during the process.

  For cup-shaped containers that store instant foods such as cup noodles, first peel off a part of the sheet-shaped lid from the flange of the cup-shaped container, and then take out a bag containing the liquid soup and ingredients from the opening. . Next, only the contents of the bag are returned into the cup-shaped container, hot water is poured, and the opening of the cup-shaped container is resealed with the lid after opening. And by cooking for a predetermined time in this state, cooking is completed and it is possible to eat the instant food in the cup-shaped container.

  Conventionally, as means for preventing the lid from being opened during steaming cooking, for example, a support member is placed on the lid, or the flange on the container body side and the lid are sandwiched by a sandwiching member such as a clothespin. There are some which use other members or the like (for example, see Patent Document 1 and Patent Document 2).

In addition, as a technique for providing a cup-shaped container for packaging instant food with a function of maintaining a closed state, there is, for example, Patent Document 3 below.
In the invention described in Patent Document 3, the hook portion 1 is attached to the surface base material layer 20 of the cover material A having a laminate structure including the surface base material layer 20, the release agent layer 14, and the plastic film layer 50. The hook part insertion cut 2 is formed on the cover member A. When the cover member A is opened from the container body B by pinching the opening pull tab 5 of the cover material A, the hook part 1 is formed on the surface base material layer 20 and peeled off. The plastic film layer 50 is exposed in the peeling region C where the agent layer 14 is provided, and a hook part insertion cut 2 for inserting the hook part 1 appears. Then, by inserting the hook portion 1 of the lid member A into the hook portion insertion cut 2, the closed state can be maintained.

JP 2000-69924 A JP 2007-130432 A JP 2006-103746 A

  However, those described in Patent Document 1 and Patent Document 2 are configured to use other members such as a support member and a sandwiching member. When cooking instant food, other members are not always close. In some cases, the number of support members and sandwiching members is smaller than the number of instant foods, and it is not necessarily an appropriate means to maintain the closed state using other members.

  On the other hand, in the invention described in Patent Document 3, since both the hook portion and the hook insertion slit are formed on the lid material side, the configuration of the sheet for forming the lid material becomes complicated and the manufacturing cost increases. There is a problem that it is easy.

  In addition, the hook portion 1 is not provided in the opening pull tab 5 portion, but is provided in the peeling region C in the vicinity of the opening pull tab 5 together with the hook insertion slit 2, and the peeling region C is the container body B. It has a structure that projects to the center side of the opening from the outer edge 6 (see FIG. 2 of cited document 3). For this reason, in the instant food using such a container, there exists a problem that noodles and soup are easy to be caught in the peeling area C which protruded to the center side, and it is difficult to perform a meal smoothly.

  Furthermore, in order to make it a closed state, it is necessary to insert the hook part into the hook insertion cut, for example, for those who are unfamiliar or with presbyopia, it is difficult to insert the hook part into a small cut is there.

  In order to solve the above-mentioned problems in the prior art, the present invention provides a simple and inexpensive configuration that can be achieved by a simple and inexpensive operation after opening a part of the lid, and can be achieved by an easy operation. It is an object to create a cup-shaped container with a state maintaining function.

Of the means for solving the above problems, the main configuration of the present invention is as follows.
A bottomed cup-shaped container body having a flange around the upper edge of the side wall; a lid having a tab protruding radially outward from the flange and joined to the flange to seal the container body; In a cup-shaped container,
A folded portion is formed on the flange to be folded back toward the bottom of the container body. A retaining portion is provided outside the side wall and on the inside of the folded portion to enable holding of the folded tab. The lid body is set in a closed state.

  The cup-shaped container with a closed state holding function of the present invention is formed by bending a tab extending from the lid and projecting radially outward from the flange to the lower end side while following the shape of the folded portion. The cup-shaped container in a state where it is once opened and poured in hot water is maintained by being inserted and held in a holding portion which is a space between the outer side of the fold and the folded portion.

  According to another aspect of the present invention, in the first aspect of the present invention, convex vertical ribs are formed on at least one of the surface of the side wall and the inner surface of the folded portion.

  In the above configuration, the holding force of the holding part is increased and the high side wall strength is achieved by narrowing the facing distance between the folded part forming the holding part and the side wall by the height of the vertical rib.

  According to another aspect of the present invention, in the invention of claim 1, an intermediate folded portion is formed between the side wall and the folded portion, and a holding portion is provided between the folded portion and the intermediate folded portion. It is said.

  In the above configuration, by providing the intermediate folded portion between the side wall and the folded portion, the holding portion having a high holding force is achieved by narrowing the width dimension in the radial direction of the holding portion.

  According to another aspect of the present invention, in the invention according to any one of claims 1 to 3, the folded portion is formed at one position in the circumferential direction of the flange and overlapping with the tab. is there.

  In the above configuration, the tab formation position and the folded portion formation position are matched in the circumferential direction, so that the tab on the lid side can be reliably held by the holding portion on the container body side and the closed state is maintained. .

  According to another configuration of the present invention, in the invention according to any one of claims 1 to 3, the folded portion is formed over the entire circumference of the flange.

    In the said structure, utilization as a holding | maintenance part is achieved over the perimeter of a flange.

  According to another aspect of the present invention, in the invention described in claim 2, the vertical rib is formed at a portion where the folded portion formed at one place in the circumferential direction and the side wall are opposed to each other.

  In the above configuration, the holding portion is formed at a portion facing the side wall and the folded portion formed at one place in the circumferential direction, and even in such a holding portion, the vertical rib is formed on the side wall side. It may be formed on the folded portion side. Or the structure which forms a vertical rib in both a side wall and a folding | turning part may be sufficient.

  According to another aspect of the present invention, in the invention described in claim 2, a plurality of vertical ribs are formed at regular intervals in the circumferential direction.

  In the above configuration, the holding portion having a high holding force is achieved over the entire circumference of the flange.

  Furthermore, in another aspect of the present invention, in the invention according to any one of claims 1 to 7, the holding portion is formed so that the facing distance on the entrance side is narrower than the maximum facing distance on the back side. It is that.

  In the above configuration, the holding portion having a high holding force is achieved by narrowing the entrance side of the holding portion.

Since the present invention has the above-described configuration, the following effects can be obtained.
In the main configuration of the present invention, the lid in the closed state can be easily and inexpensively configured by the tab on the lid side and the holding portion provided outside the side wall on the container body side, and the tip of the tab can be By a simple operation of bending and inserting into the holding portion, it is possible to reliably achieve the holding of the partially opened lid body.
And since the peeling area | region which protrudes in the center side of the opening end of a container main body conventionally can be made unnecessary, it becomes possible to take out noodles and soup smoothly and to eat.

  Further, in the configuration in which the convex vertical rib is formed on at least one of the surface of the side wall and the inner surface of the folded portion, the tab can be securely held by increasing the holding force of the holding portion. Is possible. Further, since the strength of the side wall can be increased, the joining operation to the joining surface of the lid by the seal receiving jig can be performed without giving unnecessary deformation to the container body side.

  Further, in the configuration in which the intermediate folded portion is formed between the side wall and the folded portion, and the holding portion is provided between the folded portion and the intermediate folded portion, the radial dimension of the holding portion is set. The holding force of the holding part can be improved by narrowing. Furthermore, the inner insertion part can be used separately for attaching the seal receiving jig, and the outer holding part can be used separately for holding the tab, so that the lid can be joined at the insertion part and the tab can be held at the holding part. Can be done.

  Further, in the configuration in which the folded portion is formed at one position in the circumferential direction of the flange and overlapping with the tab, it is not necessary to form the folded portion over the entire circumference of the flange. Since raw materials to be used can be reduced, manufacturing costs can be reduced. Furthermore, the formation position of the holding part can be confirmed not only by visual observation but also by touching with a hand, and a cup-shaped container that is easier to use can be obtained.

  On the other hand, in the configuration in which the folded portion is formed over the entire circumference of the flange, the outer side of the flange can be used as a holding portion over the entire circumference. Even when the cup-shaped container is displaced in the circumferential direction, the closed state can be reliably maintained.

  In addition, in the configuration in which the vertical rib is formed at a portion where the folded portion formed at one place in the circumferential direction and the side wall are opposed to each other, the holding force of the holding portion partially provided on the outer side of the flange can be increased. it can.

  In addition, in the configuration in which the plurality of vertical ribs are formed at regular intervals around the side wall, the holding force of the holding portion over the entire circumference can be increased and the overall strength of the container body can be increased. be able to.

  In addition, in the configuration in which the holding portion is formed with a size in which the facing interval on the entrance side is narrower than the maximum facing interval on the back side, the tab in the bent state is formed by increasing the holding force of the holding portion. It is possible to securely hold the plug by simply inserting it into the holding section.

It is a perspective view which shows the cup-shaped container of this invention. It is a top view of the cup-shaped container shown in FIG. FIG. 2 is a half sectional view in the longitudinal direction of the cup-shaped container shown in FIG. 1. It is a fragmentary sectional view which expands and shows the flange as a 1st example while showing the principal part of the cup-shaped container shown in Drawing 1, A shows post-processing processing before joining a lid, and B shows a tab. The held state is shown. It is a fragmentary sectional view which expands and shows the flange as a 2nd example. It is a fragmentary sectional view which expands and shows the flange as a 3rd example. It is a fragmentary sectional view which expands and shows the flange as a 4th example.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing a cup-shaped container of the present invention, FIG. 2 is a plan view of the cup-shaped container shown in FIG. 1, and FIG. 3 is a half sectional view of the cup-shaped container shown in FIG. FIG. 4 is a partial cross-sectional view showing the main part of the cup-shaped container shown in FIG. 1 and enlarging the flange as the first embodiment. A shows the post-processing before joining the lid, B Indicates a state in which the tab is held.
As shown in FIGS. 1 to 3, a cup-shaped container 1 of the present invention includes a container body 2 having an opening 2a for storing instant foods such as cup noodles, soup ingredients, and other ingredients, and the cup. And a sheet-like lid body 7 for sealing the container 1.

  In this embodiment, the container body 2 is described as having a bottomed cylindrical shape including a substantially cylindrical side wall 3 and a disk-shaped bottom wall 4. However, the container body 2 has a bottomed cylindrical shape. The shape is not limited, and includes, for example, a so-called donburi shape having a round bottom, which is a so-called bottomed cup shape. At the upper edge of the container body 2, that is, at the upper end of the side wall 3, a flange 5 that protrudes radially outward is integrally provided, and the upper surface of the flange 5 is a joint surface 5 a with the lid 7. It is.

  The container body 2 is formed by, for example, a thermoforming method or an injection molding method. As a material of the container body 2, for example, a sheet-like synthetic resin is used. The synthetic resin may have a single layer structure or a laminated structure. The container body 2 may be formed using a paper material.

  The lid body 7 is formed of a synthetic sheet manufactured by joining two or more of a sheet-like aluminum foil, a paper material, and a synthetic resin, for example. As shown in FIGS. 1 and 2, a tab 8 for picking and closing the lid 7 with a fingertip is provided at one position in the circumferential direction of the lid 7. Are integrally formed so as to protrude in a convex shape.

  After the cup-like container 1 stores instant food, soup stock, spices and other ingredients in the opening 2a of the container body 2, the lid 7 is attached to the joint surface 5a of the flange 5 by means such as heat welding. It is fixed and sealed. Only the portion of the tab 8 that contacts the bonding surface 5a is in a bonded state, and the portion protruding outside the flange 5 is in a non-bonded state.

  In order to cook in the cup-shaped container 1, first, a part of the lid body 7 is partially peeled to expose the opening 2a partially. Next, the bag body containing the soup stock, spices, and other ingredients is taken out from the container body 2, and the bag body is cut off to return only the contents to the noodles in the container body 2. And after pouring hot water in the container main body 2 and steaming for a predetermined time, maintaining a closed cover state, it becomes possible to eat by opening the cover body 7 largely.

  Here, the lid opening operation by partial opening of the lid body 7 can be performed by strongly pulling up the tab 8 at an oblique upper side a (see FIG. 4B) away from the container body 2 while picking the tab 8. 7 is peeled off from the joint surface 5a of the flange 5 and set to the open state.

  As shown in FIG. 4A, the flange 5 shown in the first embodiment is provided with a folded portion 5b that is folded in the hanging direction. The opposing distance d1 between the lower end 5b1 of the folded part 5b and the side wall 3 is smaller than the maximum facing distance d2 between the upper end 5b2 of the folded part 5b and the side wall 3 (d1 <d2). The folded portion 5b is shaped so that the lower end 5b1 approaches the side wall 3 by post-processing the cup-shaped container 1 after molding. A space portion formed between the folded portion 5 b and the side wall 3 is the holding portion 9.

Then, as shown in FIG. 4B, the opening 2 a can be closed by returning to the original horizontal posture while picking the tab 8 that has been peeled off and is not joined. Next, the tab 8 is bent in the direction α1 in the drawing while following the shape of the folded portion 5b of the flange 5, and only the tip of the tab 8 is folded inside the holding portion 9 and inserted into the holding portion 9 in this state. The tip of 8 is held by the holding portion 9, whereby the lid 7 can be kept closed. In this way, the closed state of the cup-shaped container 1 once opened can be maintained by a simple operation in which the tip of the tab 8 is simply inserted into the holding portion 9 while being bent at the lower position of the flange 5. .
In the first embodiment, since the folded portion 5 b is formed over the entire circumference of the flange 5, the tab 8 may be formed at any position on the peripheral portion of the lid body 7.

  In order to open the lid 7 again, the tab 8 in the folded state is simply pulled out from the holder 9 by simply pulling the tab 8 from the holder 9 while grasping the tip of the tab 8, and the lid 7 is closed. The state can be terminated. Subsequently, the tab 8 is lifted in a direction opposite to that at the time of closing, and further lifted obliquely upward a, whereby the lid 7 is peeled off from the joint surface 5a of the flange 5 to be set to a more complete open state.

  In the first embodiment, the tab 8 inserted in the folded state in the holding portion 9 is restored in the holding portion 9 and tries to expand and deform from the bent state. Here, the holding part 9 has a structure in which the back part having the maximum facing distance d2 is wider than the entrance side (the lower end 5b1 side) having the facing distance d1. For this reason, since the tab 8 is greatly expanded and deformed at a position deeper than the entrance side, it is possible to make it difficult for the tab 8 to come out of the holding portion 9. By adopting a narrower structure, the holding force of the holding portion 9 that holds the tab 8 can be increased, and the closed state can be more reliably maintained.

Next, a second embodiment of the present invention will be described.
FIG. 5 is an enlarged partial sectional view showing a flange of a cup-shaped container as a second embodiment. In addition, although the state which abbreviate | omitted the cover body is shown in FIG. 5, the fundamental effect | action and effect of a cover body and a tab are the same as that of 1st Example.
The cup-shaped container 1 shown in the second embodiment is greatly different from the first embodiment in that the flange 5 has a circular arc shape, and other configurations are the same as those in the first embodiment.

  As shown by a one-dot chain line in FIG. 5, in the cup-shaped container 1 shown in the second embodiment, a flange 5 having a semicircular cross section is formed at the upper edge of the side wall 3 of the container body 2 at the time of molding. Then, as shown by a solid line in FIG. 5, after forming, the lower end 5 b 1 of the flange 5 is deformed in a curl shape in a direction approaching the side wall 3, so that a substantially 3/4 circular shape is formed outside the flange 5. A folded portion 5b is formed. Such a folded portion 5 b is formed in a substantially annular shape over the entire circumference of the flange 5. The facing interval d1 of the entrance portion where the lower end 5b1 of the folded portion 5b and the side wall 3 face each other is formed to be narrower than the maximum facing interval d2 provided on the far side, and the back side from the entrance portion is the holding portion. 9 is constituted.

In the second embodiment, the upper end 5b2 of the flange 5 is a joint surface 5a to which the lid body 7 is joined, but a tab (not shown) that protrudes radially outward from the upper end 5b2 as in the first embodiment. Is bent so as to follow the shape of the flange 5, and the tab is held in the holding portion 9 by bending the tip of the tab and inserting it into the holding portion 9 from the entrance portion of the facing distance d 1 at the lower position of the flange 5. It is possible to make it.
In the second embodiment, the folded portion 5 b is formed over the entire circumference of the flange 5, so the tab 8 may be formed at any position on the peripheral edge of the lid body 7.

Next, a third embodiment of the present invention will be described.
FIG. 6 is an enlarged partial sectional view showing a flange of a cup-shaped container as a third embodiment.
The cup-shaped container 1 shown in the third embodiment is greatly different from the first embodiment in that a longitudinal rib 10 is formed on the side wall 3 and a tab 8 is formed on the edge of the lid 7 over the entire circumference. In other respects, the configuration is the same as that of the first embodiment.

  As shown in FIG. 3, in the third embodiment, the vertical rib 10 protrudes radially outward on the surface of the side wall 3 facing the folded portion 5 b of the flange 5 and the upper end of the side wall 3. Are integrally formed in a vertically long shape along the direction of the bottom wall 4. Also in the third embodiment, the holding portion 9 is a space where the folded portion 5b and the side wall 3 face each other. The vertical ribs 10 are provided around the holding portion 9 with a certain interval. For this reason, in 3rd Example, it can be set as a closed state by bend | folding the tab 8 and inserting the front-end | tip in the holding part 9 in the arbitrary positions of the circumferential direction.

  By the way, in order to join the lid 7 to the joint surface 5 a on the container body 2 side, a seal receiving jig (not shown) is inserted into the holding portion 9, and the lid 7 is thermally welded to the joint surface 5 a of the flange 5. Where necessary, in order to insert the seal receiving jig, it is necessary to form the holding portion 9 to have a certain width. However, when the width dimension of the holding part 9 is too wide, the holding force at the holding part 9 becomes low, and it becomes difficult to maintain the open state.

  Therefore, as shown in the third embodiment, when the vertical rib 10 is formed on the surface of the side wall 3, the folded portion 5b into which the seal receiving jig is inserted and the surface of the side wall 3 (the base portion of the vertical rib 10) Even if the width dimension of the holding part 9 between them is widened, the width dimension between the folded part 5b and the top of the vertical rib 10 can be reduced, so that the holding force of the holding part 9 is reduced. It becomes possible to prevent. That is, in the third embodiment, it is possible to simultaneously secure a space for receiving the seal receiving jig in the holding portion 9 and strengthen the holding force in the holding portion 9.

Next, a fourth embodiment of the present invention will be described.
FIG. 7 is an enlarged partial sectional view showing a flange of a cup-shaped container as a fourth embodiment.
The cup-like container 1 shown in the fourth embodiment is greatly different from the first embodiment in that a folded portion is formed on the outside of the side wall 3, and other configurations are the same as those in the first embodiment. It is the same.

  As shown in FIG. 7, in this cup-shaped container 1, an intermediate folded portion 5c is provided around the outer side of the container body 2, that is, between the side wall 3 and the folded portion 5b, and these folded portions are formed in duplicate. The flange 5 is comprised by 5b and the intermediate | middle folding | returning part 5c. And the insertion part 11 is provided between the side wall 3 which is an inner side, and the intermediate | middle folding | returning part 5c, and the holding | maintenance part 9 is provided between the middle folding | returning part 5c and the folding | returning part 5b which are the outer sides.

  In the fourth embodiment, by providing the intermediate folded portion 5c between the folded portion 5b and the side wall 3, the holding portion 9 having a narrow radial width is achieved. And the opposing space | interval d1 of the entrance side of the holding | maintenance part 9 between the lower end 5b1 of the folding | returning part 5b and the intermediate | middle folding | returning part 5c facing this is formed narrower than the largest opposing space | interval d2 of the back | inner side of the holding | maintenance part 9. Has been. Therefore, also in the fourth embodiment, the tab 8 is bent by inserting the tab 8 into the holding portion 9 from the entrance portion formed at the lower portion (lower end 5b1) of the folded portion 5b and having the opposing distance d1. The holding portion 9 can be held relatively firmly, and the lid 7 can be reliably maintained in the opened state after being once opened.

Although the seal receiving jig can be inserted into the insertion portion 11, the width of the insertion portion 11 in the radial direction is the diameter of the holding portion 9 so that the insertion into the holding portion 9 is impossible. It is formed wider than the width dimension in the direction. Therefore, when the lid 7 is joined to the joining surface 5a of the flange 5 and the cup-shaped container 1 is sealed, it is made possible by inserting a seal receiving jig (not shown) into the wide insertion portion 11. .
That is, also in the fourth embodiment, it is possible to simultaneously secure the space for inserting the seal receiving jig for joining the lid 7 and strengthen the holding force at the holding portion 9.

  As mentioned above, although the structure of this invention and its effect were demonstrated along the Example, embodiment of this invention is not limited to the said Example.

  For example, in the first to fourth embodiments described above, the configuration in which the folded portion is formed over the entire circumference of the flange 5 has been described. However, the present invention is not limited to this, and the folded portion is the flange 5. The structure formed in the position of any one place of the outer edge part of this may be sufficient. In this case, a configuration in which the tab 8 on the lid 7 side is formed at a position overlapping the folded portion in the circumferential direction is preferable. In this configuration, since the material for forming the folded portion can be reduced, the overall manufacturing cost can be reduced.

  In the third embodiment, the configuration in which the vertical ribs 10 are formed on the surface of the side wall 3 as means for reinforcing the holding force in the holding portion 9 has been described. However, the present invention is not limited to this. Moreover, the structure which protrudes in the convex shape toward the radial inside may be sufficient as the vertical rib 10 in the inner surface (opposite surface with the side wall 3) of the folding | returning part 5b. Alternatively, the holding force of the holding portion 9 can be increased even if the vertical rib 10 is formed to protrude in a convex shape on both the surface of the side wall 3 and the inner surface of the folded portion 5b.

  In addition, the vertical rib 10 may be configured to be partially formed in at least one of the opposed portions of the side wall 3 and the folded portion 5b formed at one place in the circumferential direction of the flange 5. The vertical ribs 10 are formed at regular intervals along the circumferential direction on at least one of the inner surfaces of the folded portions 5b formed over the entire circumference as well as the surface of the side wall 3 formed over the entire circumference. May be. In the former case, it is preferable that the tab 8 is formed at a position in the circumferential direction of the lid 7 so as to overlap with the push-back portion 5b.

In the fourth embodiment, the folded portion 5b may be formed over the entire circumference, or may be formed partially at a position overlapping the tab 8 at one place in the circumferential direction.
In addition, the vertical rib is formed in a part of at least one of the opposed portions of the folded portion 5b formed at one place in the circumferential direction of the flange 5 and the intermediate folded portion 5c formed over the entire circumference. A plurality of vertical ribs may be provided at a constant interval along the circumferential direction in at least one of the intermediate folded portions 5c formed over the entire circumference in the same manner as the folded portions 5b formed over the entire circumference. The structure formed may be sufficient.

  The cup-shaped container with a closed state maintaining function of the present invention can be used in a wider area in the field of packaging instant foods such as cup noodles.

DESCRIPTION OF SYMBOLS 1; Cup-shaped container 2; Container body 3; Side wall 4; Bottom wall 5; Flange 5a; Joining surface 5b; Folding part 5b1: Folding part lower end 5b2; Folding part upper end 5c; Tab 9; Holding portion 10; Vertical rib 11; Insertion portion

Claims (8)

A bottomed cup-shaped container body (2) having a flange (5) provided around the upper edge of the side wall (3), and a tab (8) projecting radially outward from the flange (5). And a lid (7) that is joined to the flange (5) and seals the container body (2).
The flange (5) is formed with a folded portion (5b) folded back toward the bottom of the container body (2), and is folded outside the side wall (3) and inside the folded portion (5b). A closed state characterized in that a holding part (9) capable of holding the tab (8) is provided so that the partially opened lid (7) is set in the closed state. Cup-shaped container with holding function. The cup-shaped container with a closed state holding function according to claim 1, wherein the convex vertical rib (10) is formed on at least one of the surface of the side wall (3) and the inner surface of the folded portion (5b). An intermediate folded part (5c) is formed between the side wall (3) and the folded part (5b), and a holding part (9) is provided between the folded part (5b) and the intermediate folded part (5c). The cup-shaped container with a closed state maintaining function according to claim 1. The folded portion (5b) is formed at one position in the circumferential direction of the flange (5) and at a position overlapping the tab (8). Cup-shaped container. The cup-shaped container with a closed state maintaining function according to any one of claims 1 to 3, wherein the folded portion (5b) is formed over the entire circumference of the flange (5). The cup-shaped container with a closed state holding function according to claim 2, wherein the vertical rib (10) is formed at a facing portion between the folded portion (5b) formed at one place in the circumferential direction and the side wall (3). The cup-shaped container with a closed state maintaining function according to claim 2, wherein the plurality of vertical ribs (10) are formed at regular intervals in the circumferential direction. The lid according to any one of claims 1 to 7, wherein the holding part (9) is formed with a dimension in which the facing distance (d1) on the entrance side is narrower than the maximum facing distance (d2) on the back side. A cup-shaped container with a state-keeping function.

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