Cup container blanks and cup containers

Abstract

To provide a blank container and a cup container that can ensure sufficient sealing performance. [Solution] A cup container blank 20 that constitutes the body of a cup container opening upward, wherein the cup container blank body 21 comprises an outer peripheral surface portion 3 that constitutes the outer surface of the body of the cup container, an inner peripheral surface portion 4 that is bonded to the outer peripheral surface portion 3 and has a weldable protective member that constitutes the inner surface of the body of the cup container, and in the unfolded form, overlapping portions 10 provided along the vertical direction at both ends of the cup container blank body 21, a first notch 14 and a second notch 16 provided at the upper ends of the overlapping portions 10, and a flange portion that folds the upper peripheral edge of the cup container blank body 21 to form the opening of the cup container, wherein the first overlapping portion 11 has a folded portion 13 that extends along the vertical direction of the cup container and is symmetrical in shape on either side of the folded portion 13.

Description

Technical Field

[0001] The present invention relates to a blank for a cup container and a cup container.

Background Art

[0002] Generally, a cup-shaped container is used as a simple container for filling and supplying food and beverages. The cup container is formed into a cup shape by punching out a laminate sheet composed of paper and a synthetic resin and rounding the punched blank. The blank constituting the side surface of the cup shape is adhered by overlapping both side end portions. Thus, since the blanks are overlapped and adhered, it is necessary to ensure the sealing property of the adhered portion. The cup-shaped container of Patent Document 1 includes a fan-shaped blank, a seam portion, a notch, and a flange.

[0003] The fan-shaped blank has paper as a base material, and a synthetic resin film is joined to at least one side. The seam portion is formed at both end portions of the fan-shaped blank. The cup-shaped container is processed into a cup shape by being rounded so that the seam portions overlap each other. The notch is formed by cutting out the upper portion of the seam portion in a triangular shape. The flange is formed by curling the mouth portion of the cup-shaped container by ultrasonic waves or the like. By configuring in this way, the amount of paper of the flange formed by rounding the mouth portion can be reduced by the triangular notch. Thereby, it is suppressed that the flange of the seam portion becomes extremely thicker than the flange of the non-seam portion.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the cup-shaped container of Patent Document 1 described above, which is formed by cutting out a triangular notch, when skiving hemming is applied to the seam portion for the purpose of barrier properties, the paper that has been cut (skived) is exposed at the upper end of the seam portion, and the paper thickness becomes thinner in areas other than the exposed portion, which presents a problem in that sufficient sealing performance cannot be ensured.

[0006] Therefore, the present invention provides a blank for cup containers and a cup container that can ensure sufficient sealing performance. [Means for solving the problem]

[0007] To solve the above problems, the cup container blank of the present invention is formed flat in an unfolded state and constitutes the body of a cup container that opens upward when assembled from the unfolded state into a cylindrical three-dimensional form, wherein the cup container blank body comprises an outer peripheral surface portion that constitutes the outer surface of the body of the cup container, an inner peripheral surface portion that is bonded to the outer peripheral surface portion and has a weldable protective member that constitutes the inner surface of the body of the cup container, overlapping portions provided along the vertical direction at both ends of the cup container blank body in the unfolded state, notches provided at the upper ends of the overlapping portions, and a flange portion that folds the upper peripheral edge of the cup container blank body to form the opening of the cup container, wherein one of the overlapping portions has a folded portion that extends along the vertical direction of the cup container and is symmetrical in shape with respect to the folded portion.

[0008] According to the present invention, a cup container blank is constructed with the outer peripheral surface as the outer surface and the inner peripheral surface as the inner surface. When the cup container is assembled from its unfolded form into a cylindrical three-dimensional form, one overlapping portion and the other overlapping portion overlap. One of the overlapping portions is folded in as a valley fold and overlaps the other overlapping portion. At this time, one of the overlapping portions of the inner peripheral surface to which the protective member is attached comes into contact with the other overlapping portion of the inner peripheral surface to which the protective member is attached. Since one of the overlapping portions has a symmetrical shape with respect to the fold, the protective members can be welded together without exposing the outer peripheral surface of one of the overlapping portions, compared to the case where one of the overlapping portions has an asymmetrical shape as in the prior art. Therefore, one of the overlapping portions and the other overlapping portion can be welded together without forming any gaps between them. Thus, a cup container blank that can ensure sufficient sealing performance can be provided.

[0009] Furthermore, the cup container of the present invention comprises a body formed by assembling the above-mentioned cup container blank into the three-dimensional shape, and a bottom that closes one of the openings of the body.

[0010] The present invention is characterized by comprising a body formed by assembling a cup container blank into a three-dimensional shape, and a bottom that closes one of the openings of the body, thereby providing a cup container that can ensure sufficient sealing performance. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide a blank for a cup container and a cup container that can ensure sufficient sealing performance. [Brief explanation of the drawing]

[0012] [Figure 1] This is a perspective view of a cup container in an embodiment of the present invention. [Figure 2] This is a cross-sectional view of a cup container according to an embodiment of the present invention. [Figure 3] This is an unfolded plan view of a cup container blank in an embodiment of the present invention. [Figure 4]This is a side view of the overlapping portion of a cup container according to an embodiment of the present invention. [Figure 5] This is a plan view of a blank for a cup container, as used in conventional cup containers. [Figure 6] This is a side view of the overlapping portion of a conventional cup container. [Figure 7] This is a perspective view of the cup container in the second embodiment. [Figure 8] This is an unfolded plan view of a cup container blank in the cup container of the second embodiment. [Modes for carrying out the invention]

[0013] The following description will refer to the drawings and explain the blank and cup container for embodiments of the present invention. In the following description, "up" and "down" correspond to the up and down directions in the direction of gravity. Figure 1 is a perspective view of a cup container according to an embodiment of the present invention. Figure 2 is a cross-sectional view of a cup container according to an embodiment of the present invention. Figure 3 is an unfolded plan view of a cup container blank in an embodiment of the present invention. As shown in Figure 1, cup container 1 is used as a packaging container for various types of noodles such as udon, soba, and ramen, as well as foods that are served at relatively high temperatures such as soups and side dishes, and foods that require gas barrier properties such as snacks. Cup container 1 can also be used as a container for instant foods that are consumed by adding hot water, for example. The cup container 1 comprises a body 2, an opening 5, and a bottom 7.

[0014] The cup container 1 has a cup shape that opens upwards as a whole. The cup container 1 in this embodiment is formed in a cylindrical shape in which the diameter decreases as it goes from top to bottom in the vertical direction.

[0015] An opening 5 is provided at the upper end of the cup container 1. A flange portion 6 is formed at the peripheral edge of the opening 5. The flange portion 6 is formed over the entire circumference in the circumferential direction of the cup container 1. As shown in FIG. 2, the flange portion 6 is formed by curling the peripheral edge of the opening portion 5 outward. The flange portion 6 is the part where the user's mouth directly touches when the user eats the food in the cup container 1. In the present embodiment, as shown in FIG. 2, a square-shaped flange portion is disclosed. However, it is not limited to this, and a round-shaped or flat-shaped flange portion may be formed.

[0016] A bottom portion 7 is provided at the lower end of the cup container 1. The bottom portion 7 closes the opening below the cup container 1. As shown in FIG. 2, the bottom portion 7 is provided above the lowermost end portion of the cup container 1 in the vertical direction. The bottom portion 7 is formed in a circular shape when viewed from the vertical direction.

[0017] A body portion 2 is provided on the side surface of the cup container 1. The body portion 2 is formed by a cup container blank 20. Specifically, the cup container blank 20 is formed flat in the unfolded form. The body portion 2 is formed by assembling the cup container blank 20 from the unfolded form into a cylindrical three-dimensional form.

[0018] Hereinafter, the cup container blank 20 in the unfolded form will be described. The cup container blank main body 21 of the cup container blank 20 is formed flat and fan-shaped in the unfolded form. The upper edge portion and the lower edge portion of the cup container blank main body 21 are curved in an arc shape upward. The length of the upper edge portion is longer than the length of the lower edge portion. The upper edge portion of the cup container blank main body 21 forms the opening 5. The lower edge portion of the cup container blank main body 21 is folded inward to form the body portion 2. The folded portion of the lower edge portion in the cup container blank main body 21 is located below the bottom portion 7. The folded portion of the lower edge portion in the cup container blank main body 21 abuts on the placement surface when the cup container 1 is placed.

[0019] The cup container blank body 21 comprises an outer peripheral surface portion 3 and an inner peripheral surface portion 4. The cup container blank body 21 is formed from a paper material such as cardboard or thick paper. The outer peripheral surface portion 3 is formed by assembling the cup container blank body 21 from its unfolded state into a cylindrical three-dimensional shape, thereby constituting the outer surface of the body portion 2.

[0020] The inner circumferential surface portion 4 has the same shape as the outer circumferential surface portion 3 and is bonded to the outer circumferential surface portion 3. The inner circumferential surface portion 4 constitutes the inner surface of the body portion 2 by assembling the cup container blank body 21 from its unfolded form into a cylindrical three-dimensional form. A protective member is attached to the entire area of ​​the inner circumferential surface portion 4. The protective member is waterproof and can be welded. The protective member in this embodiment is made of a material that can be heat-welded by melting its surface when heated. The protective member in this embodiment is made of, for example, an aluminum sheet and a thermoplastic resin.

[0021] Overlapping portions 10 are provided along the vertical direction at both the left and right ends of the cup container blank body 21. The overlapping portions 10 constitute the parts where the edges of the cup container blank body 21 overlap when the cup container blank body 21 is assembled from its unfolded form into a cylindrical three-dimensional form. The overlapping portion 10 comprises a first overlapping portion 11 and a second overlapping portion 15.

[0022] The first overlapping portion 11 is located on one side (left side in Figure 3) in the circumferential direction in the unfolded form of the fan-shaped cup container blank body 21. The first overlapping portion 11 is formed along the edge of one side in the circumferential direction of the cup container blank body 21. The first overlapping portion 11 comprises a symmetrical portion 12, a folded portion 13, and a first notch portion 14.

[0023] The symmetrical portion 12 is formed along one edge (left side in Figure 3) of the first overlapping portion 11. The upper edge 12a of the symmetrical portion 12 is perpendicular to one edge of the first overlapping portion 11. The area between the upper edge 12a of the symmetrical portion 12 and one edge of the first overlapping portion 11 is chamfered with a radius of approximately 1.6 mm. The lower edge 12b of the symmetrical portion 12 is perpendicular to one edge of the first overlapping portion 11. The area between the lower edge 12b of the symmetrical portion 12 and one edge of the first overlapping portion 11 is chamfered with a radius of approximately 1.6 mm. The upper edge 12a of the symmetrical portion 12 is parallel to the lower edge 12b of the symmetrical portion 12.

[0024] The symmetrical portion 12 has a bent portion 13 extending vertically in the center. The bent portion 13 is parallel to both side edges of the symmetrical portion 12. The symmetrical portion 12 has a symmetrical shape with respect to the bent portion 13. The symmetrical portion 12 is formed such that the distance between the bent portion 13 and one edge of the symmetrical portion 12 (left side in Figure 3) is equal to the distance between the bent portion 13 and the other edge of the symmetrical portion 12 (right side in Figure 3).

[0025] Here, the term "symmetrical shape" in this embodiment does not necessarily refer only to perfectly symmetrical shapes, but also includes shapes in which the dimensions of the R-chamfer at the ends of the symmetrical portion 12 differ.

[0026] The symmetrical portion 12 is subjected to skived hemming. Skived hemming is a processing method in which the edges are cut (skived) and the cut portion is folded back. As a result, the thickness of the symmetrical portion 12 is formed to be thinner than the thickness of other areas of the cup container blank body 21 excluding the symmetrical portion 12. The thickness of the symmetrical portion 12 is formed to be about half the thickness of other areas of the cup container blank body 21.

[0027] When the symmetrical portion 12 is folded with the folded portion 13 in between, a small gap may or may not be formed between the symmetrical portion 12 and the other region along the vertical direction. It is preferable that no gap is formed, but a small gap is acceptable. The small gap has the same thickness as the symmetrical portion 12.

[0028] A first notch 14 is formed at the upper and lower ends of the first overlapping portion 11. A first upper notch 14a is formed at the upper end of the first overlapping portion 11. The first upper notch 14a is formed extending from the upper edge of the cup container blank body 21 to the upper edge 12a of the symmetrical portion 12. The first upper notch 14a is formed by cutting out in a way that it slopes downward from the upper edge of the cup container blank body 21 toward the upper edge 12a of the symmetrical portion 12. The end of the first upper notch 14a on the upper edge side of the cup container blank body 21 is located above the upper edge 12a of the symmetrical portion 12.

[0029] The upper edge of the other end of the symmetrical portion 12 is chamfered with a radius R. The radius of the R chamfer is greater than 1.6 mm and is formed to be approximately 3.0 mm or less. The area between the first upper end notch 14a and the upper edge of the cup container blank body 21 is also chamfered with a radius R. The radius of the R chamfer is formed to be approximately 1.6 mm.

[0030] A first lower end notch 14b is formed at the lower end of the first overlapping portion 11. The first lower end notch 14b extends from the lower edge of the cup container blank body 21 to the lower edge 12b of the symmetrical portion 12. The first lower end notch 14b is formed by cutting out a section that slopes upward from the lower edge of the cup container blank body 21 toward the lower edge 12b of the symmetrical portion 12. The end of the first lower end notch 14b on the lower edge side of the cup container blank body 21 is located below the lower edge 12b of the symmetrical portion 12.

[0031] The lower end of the other edge of the symmetrical portion 12 is chamfered with a radius of approximately 1.6 mm. The area between the first lower end notch 14b and the lower edge of the cup container blank body 21 is also chamfered with a radius of approximately 1.6 mm.

[0032] The second overlapping portion 15 is located on the other circumferential side (right side in Figure 3) of the unfolded state of the fan-shaped cup container blank body 21. The second overlapping portion 15 is formed along the edge of the other side of the cup container blank body 21. The second overlapping portion 15 includes a second notch 16. The second notch 16 is formed by cutting out a section that slopes downward from the upper edge of the cup container blank body 21 toward the other edge of the cup container blank body 21.

[0033] The area between the second notch 16 and the upper edge of the cup container blank body 21 is chamfered with a radius of approximately 1.6 mm. The upper end of the second overlapping portion 15 is chamfered with a radius of approximately 1.6 mm. The lower end of the second overlapping portion 15 is chamfered with a radius of approximately 3.0 mm.

[0034] Next, we will explain the function of cup container 1. Figure 4 is a side view of the overlapping portion of a cup container according to an embodiment of the present invention. The cup container blank body 21 has an outer peripheral surface 3 as the outer surface and an inner peripheral surface 4 as the inner surface to form the cup container 1. When the cup container blank body 21 is assembled from its unfolded form into a cylindrical three-dimensional form, the symmetrical portion 12 of the first overlapping portion 11 is folded in a valley fold around the folding portion 13. At this time, the inner peripheral surface 4 to which the protective member of the symmetrical portion 12 is attached is exposed on the surface. Next, the first overlapping portion 11 and the second overlapping portion 15 overlap so that the other edge of the cup container blank body 21 coincides with line IV (see Figure 3) located at the boundary between the first overlapping portion 11 and the outer peripheral surface 3. At this time, the inner peripheral surface 4 to which the protective member of the symmetrical portion 12 of the first overlapping portion 11 is attached and the inner peripheral surface 4 to which the protective member of the second overlapping portion 15 is attached come into contact. Heat sealing is performed on these contact surfaces. As a result, the protective members that come into contact with each other are welded together, and the blank body 21 for the cup container is assembled into a cylindrical three-dimensional shape.

[0035] Now, let's explain conventional cup containers. Figure 5 is a plan view of the unfolded cup container blank in a conventional cup container. The conventional cup container 101 is constructed by assembling the cup container blank body 121 from its unfolded state into a cylindrical three-dimensional form. The cup container blank body 121 comprises an outer peripheral surface portion 103 and an inner peripheral surface portion 104. Overlapping portions 110 are provided along the vertical direction at both the left and right ends of the cup container blank body 121.

[0036] The overlapping portion 110 constitutes the part where the edges of the cup container blank body 121 overlap when the cup container blank body 121 is assembled from its unfolded form into a cylindrical three-dimensional form. The overlapping portion 110 comprises a first overlapping portion 111 and a second overlapping portion 115. The first overlapping portion 111 is located on one side in the circumferential direction (left side in Figure 5) of the unfolded form of the fan-shaped cup container blank body 121. The first overlapping portion 111 is formed along the edge of one side in the circumferential direction of the cup container blank body 121.

[0037] The upper end of the first overlapping portion 111 is provided with a triangular cutout portion 114. The first overlapping portion 111 is provided with a folded portion 112. The folded portion 112 is formed along one end edge (left side in Figure 5) of the first overlapping portion 111. The center of the folded portion 112 is provided with a fold portion 113 that extends in the vertical direction. The folded portion 112 has an asymmetrical shape with the fold portion 113 in between.

[0038] Figure 6 is a side view of the overlapping portion of a conventional cup container. When assembling the cup container blank body 121 from its unfolded state into a cylindrical three-dimensional form, the folded portion 112 of the first overlapping portion 111 is folded in a valley fold around the fold portion 113. At this time, the portion of the outer peripheral surface 103 of the folded portion 112 that is attached to the upper end of the folded portion 112 is exposed on the surface. Next, the first overlapping portion 111 and the second overlapping portion 115 overlap so that the other edge of the cup container blank body 121 (right side in Figure 5) aligns with line VI (see Figure 5), which is located at the boundary between the first overlapping portion 111 and the outer peripheral surface 103. At this time, the inner peripheral surface 104 of the folded portion 112 of the first overlapping portion 111 to which the protective member is attached comes into contact with the inner peripheral surface 104 of the second overlapping portion 115 to which the protective member is attached. Heat sealing is performed on these contact surfaces. As a result, the protective members that come into contact with each other are welded together, and the blank body 121 for the cup container is assembled into a cylindrical three-dimensional shape.

[0039] At this time, the portion of the outer peripheral surface 103 of the folded portion 112 that is attached to the upper end of the folded portion 112 is exposed on the surface. Therefore, when heat sealing is performed, the first overlap portion 111 does not weld to the upper end of the second overlap portion 115. Consequently, there is an unwelded portion at the upper end of the overlap portion 110.

[0040] In contrast, according to the cup container 1 of this embodiment, the cup container blank 20 has an outer peripheral surface portion 3 as the outer surface and an inner peripheral surface portion 4 as the inner surface to constitute the cup container 1. When the cup container 1 is assembled from its unfolded form into a cylindrical three-dimensional form, the first overlapping portion 11 and the second overlapping portion 15 overlap. The first overlapping portion 11 is folded in with a valley fold at the fold portion 13 and overlaps with the second overlapping portion 15. At this time, the inner peripheral surface portion 4 to which the protective member of the first overlapping portion 11 is attached and the inner peripheral surface portion 4 to which the protective member of the second overlapping portion 15 is attached come into contact. Since the first overlapping portion 11 has a symmetrical shape with respect to the fold portion 13, the protective members can be welded together without exposing the outer peripheral surface portion 3, which becomes the outer surface of the cup container 1, compared to the case where the first overlapping portion 11 has an asymmetrical shape, as in the conventional cup container 101. Therefore, the first overlapping portion 11 and the second overlapping portion 15 can be welded together without forming any gaps between them. Therefore, a blank 20 for cup containers that can ensure sufficient sealing performance can be provided.

[0041] Furthermore, according to the present invention, a cup container 1 can be provided that has a body portion 2 formed by assembling a cup container blank 20 into a three-dimensional shape, and a bottom portion 7 that closes one of the openings of the body portion 2, thereby ensuring sufficient sealing performance.

[0042] [Second Embodiment] A second embodiment of the present invention will be described below with reference to Figures 7 and 8. The basic configuration of the cup container blank and cup container in this embodiment is the same as in the first embodiment, but the configuration of the cup container blank body and bottom differs from that of the first embodiment. Figure 7 is a perspective view of the cup container in the second embodiment. Figure 8 is an unfolded plan view of the cup container blank in the cup container of the second embodiment. In Figures 7 and 8, components common to the drawings of the first embodiment are denoted by the same reference numerals, and their descriptions are omitted.

[0043] The cup container 201 comprises a body 202, an opening 205, and a bottom 207. The cup container 201 has a rounded rectangular cup shape as a whole, with an opening that faces upward. In the second embodiment, the cup container 201 is formed such that the width of the container decreases from top to bottom in the vertical direction.

[0044] An opening 205 is provided at the upper end of the cup container 201. The opening 205 has a rounded rectangular shape when viewed from above. A flange portion 6 is formed around the periphery of the opening 205. The flange portion 6 has the same configuration as in the first embodiment.

[0045] A bottom portion 207 is provided at the lower end of the cup container 201. The bottom portion 207 closes the lower opening of the cup container 201. The bottom portion 207 is located above the lowest end of the cup container 201 in the vertical direction. When viewed from above, the bottom portion 207 is formed in the shape of a rounded rectangle.

[0046] A body portion 202 is provided on the side of the cup container 201. The body portion 202 is formed from a cup container blank 220. Specifically, the cup container blank 220 is formed flat in its unfolded state. The body portion 202 is formed by assembling the cup container blank 220 from its unfolded state into a cylindrical three-dimensional shape.

[0047] The following describes the blank 220 for cup containers in its deployed form. The cup container blank body 221 of the cup container blank 220 is formed flat in its unfolded state. The cup container blank body 221 comprises a curved portion 222 and a flat portion 223.

[0048] The curved portion 222 constitutes the four corners of the cup container blank body 221 in its three-dimensional form. In its unfolded form, the curved portion 222 curves gently upwards. The length of the upper edge of the curved portion 222 is longer than the length of the lower edge.

[0049] The flat portion 223 constitutes the side surface of the cup container blank body 221, excluding the corners, in its three-dimensional form. The flat portion 223 is formed so that its upper edge and lower edge are parallel. One of the flat portions 223 is divided in the left-right direction and connected to the left and right side ends of the cup container blank body 221, respectively.

[0050] The upper edge of the cup container blank body 221 forms an opening 205. The lower edge of the cup container blank body 221 is folded inward to form a body portion 202. The folded portion of the lower edge of the cup container blank body 221 is located below the bottom portion 207. The folded portion of the lower edge of the cup container blank body 221 contacts the surface on which the cup container 201 is placed.

[0051] The blank body 221 for the cup container comprises an outer circumferential surface portion 203 and an inner circumferential surface portion 204. The configuration of the outer circumferential surface portion 203 and the inner circumferential surface portion 204 is the same as in the first embodiment. Overlapping portions 10 are provided along the vertical direction at both the left and right ends of the cup container blank body 21. The configuration of the left and right end portions of the cup container blank body 221 is the same as in the first embodiment. In this embodiment, a container with rounded corners and a rectangular shape has been described, but any polygon other than a rectangle is acceptable as long as it is possible to assemble a single blank from its unfolded state into a cylindrical three-dimensional shape.

[0052] It should be noted that the present invention is not limited to the embodiments described above with reference to the drawings, and various modifications are conceivable within its technical scope. For example, in the above embodiment, the cup container blank bodies 21 and 221 are made of paper material, but they may be made of foamed insulation material or the like. The first overlapping portion 11 and the second overlapping portion 15 may be formed on the cup container blank bodies 21 and 221 in opposite directions. The radius of the R chamfer of the cup container blank bodies 21 and 221 may be changed as appropriate. The shape of the symmetrical portion 12 is symmetrical such that the upper edge portion 12a of the symmetrical portion 12 is located below the end portion on the upper edge side of the cup container blank body 21 and 221 at the first upper end notch portion 14a, and this may be changed as appropriate. Furthermore, it is possible to replace the components in the above-described embodiments with well-known components as appropriate, without departing from the spirit of the present invention. [Explanation of Symbols]

[0053] 1 cup container 2 Torso 3 Outer peripheral surface 4 Inner peripheral surface 5 Openings 6. Flange section 7 Bottom 10 Overlapping parts 11. First overlapping section 12 Symmetrical parts 12a Upper edge 12b Lower edge 13. Folded section 14. First notch 14a First upper notch 14b First lower end notch 15. Second overlapping section 16. Second notch Blank for 20 cup containers 21 Blank body for cup container

Claims

1. A cup container blank that is formed flat in its unfolded state and forms the body of a cup container that opens upward when assembled from the unfolded state into a cylindrical three-dimensional shape, The blank body for the cup container is The outer peripheral surface portion that constitutes the outer surface of the body of the cup container, An inner circumferential surface portion is provided on which a weldable protective member is attached to the outer circumferential surface portion and which constitutes the inner surface of the body of the cup container, In the aforementioned unfolded configuration, overlapping portions are provided on both ends of the cup container blank body, along the vertical direction, Notches are provided at the upper ends of the overlapping portions, The upper periphery of the blank body for the cup container is folded to form a flange portion that creates the opening of the cup container, Equipped with, One of the overlapping portions has a folded portion that extends along the vertical direction of the cup container, and has a symmetrical shape on either side of the folded portion. A blank for cup containers characterized by the following features.

2. A body formed by assembling the cup container blank described in claim 1 into the three-dimensional shape, The bottom portion that closes one of the openings in the body, A cup container equipped with [a specific feature / feature].

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