Cup container

Abstract

To provide a cup container that allows users to hold it for longer periods of time without discomfort, even when the cup container is hot due to heating.SOLUTION: A cup container 1 is made of paper and comprises a bottom 21 that seals a bottom of a container body 2 and a barrel 22 which is made by curving a paper base material 4 and rises along a peripheral edge of the bottom 21. An upper end of the barrel 22 is folded outward, and a curl portion 3 extending along the peripheral edge of the barrel 2 is provided. An embossed area 5 having a plurality of protrusions 5a is formed in a range constituting the curl portion 3 of the paper base material 4. An inner curl protrusion 51a, which is the protrusion 5a of the embossed area 5, protrudes from inside the curl 35 of the curl portion 3.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a cup container in which food or beverages are contained and which is heated in a microwave oven before consumption. [Background technology]

[0002] Food and drink products, such as pre-cooked foods and beverages, intended to be heated in a microwave oven are displayed and sold at convenience stores, etc. These foods and drinks are contained in disposable cup containers that are microwave-compatible, and are placed in and heated in the microwave oven without being removed from the container.

[0003] This cup container has a container body with one end closed and the other end open. The container body has a body part that rises endlessly from the periphery of the bottom. A curled part is formed along the periphery of the upper end part of the body part. The curled part is formed by folding the upper end part of the body part outward (see, for example, Patent Document 1). The curled part is formed to increase the strength of the periphery surrounding the opening, making the opening less likely to warp. The curled part may also be formed as a fitting part with an outer fitting lid that covers the container body.

[0004] To prevent the eater from getting burned when removing the cup from a microwave oven, the cup is insulated to prevent the heat of the food from being transferred to the eater even when the eater holds the cup. One method of insulation is to coat the outer surface of a moist paper cup with a thermoplastic foam layer made of polyethylene resin or the like, and to foam the foam layer by the vapor pressure of the moisture contained in the paper of the cup (see, for example, Patent Document 2). The foam layer is interposed between the cup and the eater's hand or fingers. This foam layer acts as an insulating layer and suppresses the transfer of heat from the food to the eater.

[0005] The degree of foaming and uniformity of the foamed layer may vary depending on conditions such as the resin temperature during extrusion of the thermoplastic resin, the surface properties of the paper, and the nip pressure during lamination. Therefore, there is a risk that localized areas with a thin foam thickness may be generated, and useful heat insulating effects may not be obtained locally. However, even if the foamed layer can be formed well, a heat insulating treatment method that does not cause discomfort to the eater is still under development.

[0006] Therefore, consumers are hesitant to grip the body even if it is coated with a foam layer. Instead, consumers have found from experience that they tend to grip the curled portion, which is located at the periphery of the container opening and is the furthest from the food and drink. In addition, the curled portion is thick and has lower thermal conductivity than the body, since it is formed by folding back the paper base material of the body. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent Publication No. 2014-91540 [Patent Document 2] Special Publication No. 48-32283 Summary of the Invention [Problem to be solved by the invention]

[0008] However, in the past, the curled portion was provided for strengthening the periphery of the opening and for external fitting, not for gripping. In particular, from the viewpoint of ease of external fitting, the curled portion was short, and most of the eater's fingers would protrude from the curled portion and touch the body. Therefore, even if the curled portion was used as a handle, the eater could not hold the cup container for very long without feeling uncomfortable.

[0009] The present invention has been proposed to solve the problems of the prior art as described above, and its object is to provide a cup container that extends the time that a eater can hold it without feeling uncomfortable, even when the cup container has become hot due to heating. [Means for solving the problem]

[0010] In order to achieve the above-mentioned object, a cup container according to an embodiment of the present invention is a paper cup container comprising a bottom that covers the bottom of the container, a body formed by curving a paper base material and rising along the periphery of the bottom, a curled portion formed by folding the upper end of the body portion outward and extending along the periphery of the body portion, and an embossed area formed in the paper base material within the range that forms the curled portion and having a plurality of convex portions, and the convex portions of the embossed area protrude inside the curled portion.

[0011] The container may be provided with a lid that fits inside the body, and the embossed area may be formed in the fitting area with the lid, and may have a curled outer convex portion that is the convex portion that protrudes from the inner surface of the body.

[0012] The curl portion may have a bent portion that forms the periphery of the body portion, a folded portion that is folded back outward from the bent portion as its starting point, and a facing portion that is covered by the folded portion, and the interior of the curl portion is defined by the bent portion, the folded portion, and the facing portion, and the curl outer convex portion may protrude from the facing portion.

[0013] The lid may have an inverted tapered portion that expands outwardly from top to bottom and faces the fitting region of the body.

[0014] The curled portion has a bent portion that forms the periphery of the body portion, a folded portion that is folded back outward starting from the bent portion, and a facing portion that is covered by the folded portion, the inside of the curled portion is defined by the bent portion, the folded portion, and the facing portion, and the embossed area may have a convex portion inside the curl in the folded portion, the facing portion, or both.

[0015] The embossed region has at least the curled inner convex portion in the folded portion, The curled inner convex portion of the folded-back portion may be elongated to be thinner than the curled inner convex portion of the facing portion.

[0016] The embossed area may have a first convex area which is the area where the inner curl convex area is formed in the folded-back portion, a second convex area which is the area where the inner curl convex area is formed in the opposing portion, and a smooth area without irregularities located between the first convex area and the second convex area, and the bent portion may be formed to include the smooth area.

[0017] The embossed region may be formed from the lower end or midway height of the body portion over a range that forms the curled portion, and may have the convex portion on the outer surface of the body portion.

[0018] The outer surface of the body may be provided with a foamed resin layer.

[0019] The inner surface of the body may be provided with a resin coating layer. Effect of the Invention

[0020] According to the present invention, even if the cup container becomes hot due to heating, the time that a person who handles the cup container by using the curled portion as a handle can hold it without feeling uncomfortable can be extended. [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is an overall view of the cup container. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] A cup container according to an embodiment of the present invention will be described in detail with reference to the drawings. In each drawing, thickness, dimensions, positional relationship, ratio, shape, etc. may be emphasized for ease of understanding, but the present invention is not limited to such emphasis. Hereinafter, the bottom side of the cup container will be referred to as the lower side or lower side, the opening side will be referred to as the upper side or upper side, and the direction in which the cup container expands will be referred to as the radial direction.

[0023] (composition) Fig. 1 is an overall view of a cup container 1. The cup container 1 contains food or drink that can be heated in a microwave oven, such as doria. The food or drink is heated in the microwave oven while still contained in the cup container 1. This cup container 1 comprises a container body 2 and a lid 7. The container body 2 is made of paper with a paper base material, and the lid 7 is made of a transparent resin obtained by molding a resin sheet.

[0024] The container body 2 has a cylindrical shape with a bottom. Examples of cylindrical shapes with a bottom include a cylindrical shape that rises vertically upward and an inverted frustum shape that gradually expands in diameter toward the top. Examples of the ring shape of the tube include various circular shapes including a perfect circle, an ellipse, a rounded rectangle, an egg shape, and other oval shapes, and polygonal shapes. The container body 2 has a bottom 21 and a body 22. The bottom 21 is a thick surface that closes the bottom of the container body 2. The bottom 21 is a flat surface, or is curved in a dome shape toward the inside of the container body 2.

[0025] The body portion 22 extends endlessly along the entire periphery of the bottom portion 21. The body portion 22 rises upward from the periphery of the bottom portion 21. The lower end side of the body portion 22 may extend downward below the bottom portion 21 and serve as a platform for the container body 2. The ring shape of the body portion 22 may be the same shape as the bottom portion 21, or may be a different shape from the bottom portion 21. Furthermore, the body portion 22 may have the same shape from the lower end to the upper end, or may have a different shape depending on the height.

[0026] An embossed region 5 is formed in the body 22. The embossed region 5 is a region in which a plurality of convex portions 5a are formed on the surface of the body 22. The convex portions 5a are formed by locally pressing a mold against the body 22 to apply pressure and locally raising the paper body 22. The embossed region 5 may extend over the entire surface of the body 22, or may be formed in one or more limited regions according to the function required of the embossed region 5. Furthermore, the convex portions 5a may be formed so as to rise on the outside of the container body 2, or on the inside of the container body 2, or multiple types of convex portions with different rising directions may be formed according to the function required.

[0027] A curled portion 3 is formed on the periphery 26 of the body 22. The curled portion 3 bulges outward in the radial direction from the body 22. This curled portion 3 is formed by bending the paper body 22 outward in the radial direction. The container body 2 has an opening 25. The opening 25 is an opening through which food or drink is removed when eating or drinking. The curled portion 3 surrounds the entire opening 25, increasing the strength of the opening 25. In addition, the curled portion 3 is wide in the vertical direction so that a wide range of the eater's fingers can fit within the curled portion 3 even when the curled portion 3 is held by the eater's fingertips.

[0028] The curled portion 3 also serves to seat the lid 7. The lid 7 is fitted internally into the container body 2 while being seated on the curled portion 3, to close the opening 25 of the container body 2. However, the container body 2 and the lid 7 are not bonded together by heat fusion or the like. The lid 7 is produced by sheet molding using a plastic sheet such as polypropylene. The lid 7 comprises, from the center to the outer periphery, a top surface 71, an internal fitting portion 72, and a lid-side flange portion 74. The top surface 71, the internal fitting portion 72, and the lid-side flange portion 74 are seamlessly connected together by sheet molding, thereby forming an integrated unit.

[0029] The top surface 71 is located at the innermost shell including the center of the lid 7. The top surface 71 extends radially from the center of the lid 7 around the entire circumference. The internal fitting portion 72 extends endlessly around the entire circumference along the periphery of the top surface 71. The internal fitting portion 72 is an annular body that bulges out convexly downward from the lid 7. The internal fitting portion 72 has the same diameter as or a slightly larger diameter than the inner peripheral surface of the container body 2. When the lid 7 is placed on the container body 2, the internal fitting portion 72 enters inside the container body 2 and is pressed against the inner peripheral surface of the container body 2.

[0030] The lid side flange portion 74 extends endlessly around the entire circumference along the upper end of the outer circumferential wall of the inner fitting portion 72, and expands radially outward. The lid side flange portion 74 is located on the outermost circumference of the lid 7. The lid side flange portion 74 seats on the curled portion 3 of the container body 2. Therefore, the outermost diameter of the lid side flange portion 74 is at least longer than the innermost diameter of the curled portion 3 of the container body 2. The lid side flange portion 74 only needs to rest on the curled portion 3, and may be a horizontal surface extending horizontally in the radial direction, or may be curved along the curled portion 3 so as to wrap around the upper portion of the curled portion 3.

[0031] Fig. 2 is a development view of the paper base material 4 of the body portion 22. Fig. 3 is a cross-sectional view of the curled portion 3. The relationship between the curled portion 3 and the embossed region 5 of the container body 2 will be described in more detail with reference to Figs. 2 and 3. The body portion 22 is a tube formed by bonding both ends of the paper base material 4. As shown in Fig. 3, the paper base material 4 is an annular sector sheet or a rectangular strip-shaped sheet.

[0032] The paper base material 4 is coated with a foamed resin layer on the surface that will become the outer surface of the body 22, and with a high softening point resin layer on the surface that will become the inner surface of the container body 2. Thermoplastic resins with different softening points are used for the foamed resin layer and the high softening point resin layer. A thermoplastic resin with a lower softening point than the high softening point resin layer is used for the foamed resin layer, and a resin with a higher softening point than the foamed resin layer is used for the high softening point resin layer.

[0033] Examples of the thermoplastic resin contained in the foamed resin layer and the high softening point resin layer include polyolefins such as low density polyethylene resin (LDPE), linear low density polyethylene resin (LLDPE), very low density polyethylene (VLDPE), medium density polyethylene resin (MDPE), high density polyethylene resin (HDPE), polypropylene, polymethylpentene, etc. Examples of the thermoplastic resin other than polyolefins include polyamide, polyacetal, polyphenylene filled, polystyrene, polyvinyl chloride, acrylic resin, polycarbonate, polyethylene terephthalate, etc.

[0034] An upper end 41 of the paper base material 4 is formed into the curled portion 3. The curled portion 3 has a bent portion 31, a folded portion 32, a facing portion 33, and a tucked-in portion 34. The folded portion 32 is a piece of paper folded back to the outside of the container body 2, and is folded back until its tip faces the lower end 42 of the paper base material 4. The bent portion 31 is the starting end of the folded portion 32, and forms the periphery of the body portion 22. The facing portion 33 is an area that continues from the body portion 22 and faces the folded portion 32. The tucked-in portion 34 is the tip region of the folded portion 32, and is folded in between the folded portion 32 and the facing portion 33.

[0035] Here, the curled portion 3 is wide in the vertical direction so that a wide range of the eater's fingers can be accommodated in the curled portion 3 even when the curled portion 3 is held by the eater's fingertips. For example, the folded portion 32 has a length of 8 mm or more and 20 mm or less in the vertical direction. In contrast, the length of the folded portion 34 in the vertical direction is 2 mm or more and 10 mm or less, and the space between the folded portion 32 and the facing portion 33 is not solid but is a space due to the folded portion 34. If the folded portion 34 is made to exceed 10 mm, there is a risk that production efficiency will decrease, wrinkles will occur due to a load being applied to the approximate center of the folded portion 32, strength will be insufficient due to the wrinkles, and the folded portion 32 will be easily deformed. Therefore, the folded portion 34 is preferably 10 mm or less, and in this case, it will not be the same length as the folded portion 32, which is affected by the width of the eater's fingers.

[0036] The embossed region 5 extends to include the region of the paper base material 4 that will be formed into the curl portion 3. The embossed region 5 is broadly divided into an inner curl convex region 51, an outer curl convex region 52, and a body convex region 53. The inner curl convex region 51 is a region of the upper end portion 41 of the paper base material 4 that extends from a midpoint of the facing portion 33 of the curl portion 3 through the bent portion 31 to the folded-back portion 32. The outer curl convex region 52 is a region adjacent to the inner curl convex region 51 and extends to the lower end of the facing portion 33. The body convex region 53 is a region of the body 22 below the curl portion 3.

[0037] As shown in Fig. 4, in the curl inner convex region 51, the convex portion 5a of the embossed region 5 is an curl inner convex portion 51a that bulges into the curl inside 35 sandwiched between the folded-back portion 32 and the facing portion 33 of the curl portion 3. The curl inner convex portion 51a is pressed out by a mold from the surface of the paper base material 4 that will become the container inner circumferential surface 24, and bulges into the surface that will become the container outer circumferential surface 23. Since the curl inner convex region 51 is formed from the facing portion 33 to the folded-back portion 32, this curl inner convex portion 51a is positioned in the range of the curl inner surface 36 and bulges into the curl inside 35.

[0038] 3 and 4, the inner curl convex region 51 has a first convex region 511 corresponding to the folded-back portion 32, a second convex region 512 corresponding to the facing portion 33, and a smooth region 513 corresponding to the bent portion 31. Inner curl convex portions 51a are formed in the first convex region 511 and the second convex region 512. However, in the smooth region 513, no convex portions 5a are formed, including the inner curl convex portions 51a.

[0039] Next, in the curled outer convex region 52, the convex portion 5a of the embossed region 5 is a curled outer convex portion 52a that bulges out toward the back surface of the curled portion 3. The curled outer convex portion 52a is extruded by a mold from the surface of the paper base material 4 that will become the container outer peripheral surface 23, and bulges out toward the surface that will become the container inner peripheral surface 24. Since the curled outer convex region 52 is formed in the lower end region of the facing portion 33, this curled outer convex portion 52a is disposed on the back surface of the curled portion 3, and bulges out toward the container inner peripheral surface 24 of the container body 2.

[0040] In the body convex region 53, the convex portion 5a of the embossed region 5 is a body convex portion 53a that bulges into the body 22 below the curled portion 3. The body convex portion 53a is extruded by a mold from the surface of the paper base material 4 that will become the container inner peripheral surface 24, and bulges into the surface that will become the container outer peripheral surface 23. The convex portion 5a of the embossed region 5, including this body convex portion 53a, is a polygonal region that includes various circular shapes including perfect circles, ellipses, rounded rectangles, egg shapes, and other oval shapes, and elongated linear shapes. Typically, it is a rectangle. The corners of the convex portion 5a may be angular or rounded. The convex portion 5a may be a curved hemisphere without a flat surface.

[0041] (action) In such a cup container 1, the relationship between the curled portion 3 and the embossed region 5 is as follows. First, consider the case where there is no inner convex region 51 in the curl. If the folded-back portion 32 is extended so that the curled portion 3 is wider in the vertical direction in order to accommodate a wide range of the eater's fingers within the curled portion 3, the curled portion 3 becomes easily crushed by pressure from the eater. If the curled portion 3 is crushed, the curled portion 3 becomes thin-walled, and the insulating effect per unit area decreases.

[0042] On the other hand, in this cup container 1, the curled inner convex portion 51a bulges toward the curled inner portion 35. Therefore, the void in the curled inner portion 35 is reduced, and the curled portion 3 is strengthened by the curled inner convex portion 51a. Therefore, even if a consumer presses the curled portion 3, which has become wider in the vertical direction, the curled portion 3 is less likely to be crushed. Therefore, the curled portion 3 can protect a wide area of ​​the consumer's fingers from heat without reducing the insulating effect of the curled portion 3. Even if the consumer handles the cup container 1 using the curled portion 3 as a handle after heating the cup container 1 in a microwave oven, the time that the consumer can hold the cup container 1 without feeling uncomfortable can be extended.

[0043] The curl inner convex portion 51a is not particularly limited to a bulging location, so long as it bulges from the curl inner surface 36 that defines the curl interior 35. For example, the curl inner convex portion 51a may be provided only on the facing portion 33. However, it is more advantageous to provide the curl inner convex portion 51a at least on the folded-back portion 32. The curl inner convex portion 51a provided on the folded-back portion 32 is stretched thin when the upper end portion 41 of the paper base material 4 is folded back and pressed against the facing portion 33 during the molding process of the body portion 22. At this time, the curl inner convex portion 51a of the folded-back portion 32 is consumed during stretching, and is stretched thin instead of the folded-back portion 32. Therefore, the curl portion 3 is less likely to wrinkle, the appearance is improved, and the yield is improved.

[0044] More preferably, the inner curl convex portion 51a is provided in both the facing portion 33 and the folded-back portion 32. This further improves the solidity of the curl interior 35, making the curl portion 3 less likely to be crushed. However, in a more preferred embodiment, the inner curl convex portion region 51 of the cup container 1 is divided into a first convex portion region 511 corresponding to the folded-back portion 32 and a second convex portion region 512 corresponding to the facing portion 33. Then, between the first convex portion region 511 and the second convex portion region 512, a smooth region 513 is provided in which no convex portion 5a is formed and there are no irregularities.

[0045] According to this further preferred embodiment, the boundary between the first convex region 511 and the smooth region 513 is likely to become a crease, and the boundary between the second convex region 512 and the smooth region 513 is likely to become a crease. In this way, the embossed region 5 plays the role of a crease. Therefore, by narrowing the smooth region 513, it is possible to form a bent portion 31 that is narrow in the container radial direction. For example, when food or drink containing cheese is placed in the cup container 1, it is difficult for the cheese or other food or drink to be placed on the narrow bent portion 31, and the food or drink can be placed in the cup container 1 in an attractive manner, the yield is improved, and the sealing performance of the lid 7 is improved.

[0046] FIG. 4 is a cross-sectional view showing the internal fitting of the cup container 1. The back surface of the curled portion 3 belongs to the fitting region with the internal fitting portion 72 of the lid 7. The curled outer convex portion 52a of the curled outer convex portion region 52 strengthens the pressure contact force between the internal fitting portion 72 and the container inner peripheral surface 24 of the cup container 1, making the lid 7 difficult to come off. In this case, it is preferable to form an inverse tapered surface 73 that expands from top to bottom toward the outside on the internal fitting portion 72. The inverse tapered surface 73 makes the internal fitting portion 72 an inverse tapered portion, which catches on the curled outer convex portion 52a, making the lid 7 difficult to come off. If the lid 7 becomes difficult to come off, steam heated from the inside is difficult to be released when heated in a microwave oven, and discomfort when a person holds the curled portion 3 can be reduced.

[0047] Thus, the cup container 1 is made of paper and includes a bottom 21 that closes the bottom of the container body 2, and a body 22 that is formed by curving the paper base material 4 and rises along the periphery of the bottom 21. The upper end of the body 22 is folded back outward, and a curled portion 3 that extends along the periphery of the body 22 is provided. The embossed region 5 having a plurality of convex portions 5a is formed in the range that forms the curled portion 3, of the paper base material 4. Into the curl interior 35 of the curled portion 3, the convex portions 5a of the embossed region 5, that is, the inner curl convex portions 51a, protrude.

[0048] As a result, even if the eater presses the curled portion 3, the curled portion 3 is not easily crushed, and the curled portion 3 can be extended widely in the vertical direction to protect a wide area of ​​the eater's fingers from heat by the curled portion 3. Therefore, even if the eater handles the cup container 1 using the curled portion 3 as a handle after heating the cup container 1 in a microwave oven, the time that the eater can hold the cup container 1 without feeling uncomfortable can be extended.

[0049] In order to make the curled portion 3 difficult to be crushed, it is sufficient that the embossed region 5 is limited to the range of the paper base material 4 where the curled portion 3 is formed. However, this is not limiting, and in the same process, the embossed region 5 may be extended from the lower end 42 or an intermediate height of the body 22 to the range that forms the curled portion 3, or a convex portion 5a may be formed on the container outer peripheral surface 23 of the body 22. Even if a eater grips the body 22, the embossed region 5 of the body 22 can reduce the discomfort felt by the eater.

[0050] Moreover, the embossed region 5 has at least the curled inner convex portion 51a in the folded-back portion 32. The curled inner convex portion 51a in the folded-back portion 32 is stretched thinner than the curled inner convex portion 51a in the facing portion 33.

[0051] As a result, even if the curled portion 3 is stretched wide in the vertical direction, wrinkles along the circumferential direction of the curled portion 3 are less likely to form, resulting in a good appearance and improved yield.

[0052] In addition, the embossed region 5 has a first convex region 511 which is the area where the curled inner convex portion 51a in the folded-back portion 32 is formed, a second convex region 512 which is the area where the curled inner convex portion 51a is formed in the facing portion 33, and a smooth region 513 which is located between the first convex region 511 and the second convex region 512 and has no irregularities.

[0053] As a result, creases are formed at the boundary between the first convex region 511 and the smooth region 513, and at the boundary between the second convex region 512 and the smooth region 513. The bent portion 31 is formed to include the smooth region 513. In other words, by narrowing the smooth region 513, the bent portion 31 can be narrowed, which reduces the risk of food or drink getting on the curled portion 3 during production, improves the appearance, and improves the yield.

[0054] The container is also provided with a lid 7 that fits inside the body 22. The embossed region 5 is formed in the fitting region with the lid 7, and has a curled outer convex portion 52a that is a convex portion 5a that protrudes from the container inner circumferential surface 24 of the body 22.

[0055] This increases the pressure contact force between the container body 2 and the lid 7, making it difficult for the lid 7 to come off. Therefore, when heated in a microwave oven, heated steam is less likely to be released from the inside, reducing discomfort felt by the eater when gripping the curled portion 3.

[0056] (Other embodiments) In addition, the embodiments and examples of the present invention are presented as examples, and are not limited to the above embodiments and examples. The above embodiments and examples can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the scope of the invention. The embodiments, examples, and their modifications are included in the scope of the present invention.

[0057] For example, in order to make the curled portion 3 less likely to be crushed and reduce discomfort felt by the eater when holding the curled portion 3 after cooking, the embossed region 5 may be only the inner convex region 51 of the curl. Also, in order to make the curled portion 3 stretched in the vertical direction less likely to wrinkle and to improve the appearance and yield, the embossed region 5 may be only the first convex region 511 corresponding to the folded portion 32.

[0058] In addition, by making the bent portion 31 of the curled portion 3 thin, the embossed area 5 may be provided with only a first convex area 511 corresponding to the folded portion 32, a second convex area 512 corresponding to the facing portion 33, and a smooth area 513 corresponding to the bent portion 31, so as to prevent food and drink from being placed on the curled portion 3 during the manufacturing process, resulting in a poor appearance or a decrease in yield.

[0059] In addition, in order to make it difficult for the lid 7 to come off and to avoid discomfort to the eater who grips the curled portion 3 after cooking, the embossed area 5 may be only the curled outer convex area 52. This curled outer convex area 52 may be formed not only on the back surface of the curled portion 3 but also below the curled portion 3, or may be formed only below the curled portion 3, as long as it is an area that engages with the lid 7.

[0060] Furthermore, the cup container 1 may have a plurality of regions in the embossed region 5, including the body protruding region 53. [Explanation of symbols]

[0061] 1 cup container 2 Container body 21 Bottom 22 Torso 23 Container outer surface 24 Inner surface of container 25 Aperture 26 Periphery 27 Mating Area 3 Curl section 31 Bend 32 Folded section 33 Facing section 34 Folding section 35 Inside the Curl 36 Curl inner surface 4 Paper base material 41 Upper end 42 Bottom end 5 Embossed Area 5a Convex part 51 Curl inner convex area 51a Curl inner convex part 511 First convex region 512 Second convex area 513 Smooth region 52 Curl outer convex area 52a Curl outer convex part 53 Body convex area 53a Body protrusion 7 Lid 71 Top 72 Internal fitting part 73 Reverse tapered surface 74 Lid side flange

Claims

1. A paper cup container, A bottom portion that closes the bottom of the container; A body portion formed by curving a paper base material and rising along the periphery of the bottom portion; a curled portion formed by folding an upper end of the body portion outward and extending along a periphery of the body portion; an embossed area having a plurality of protrusions formed in the area of ​​the paper base material that forms the curled portion; Equipped with an inner curl convex portion, which is the convex portion of the embossed region, protrudes from the inside of the curl portion; A cup container characterized by:

2. A lid is provided that fits inside the body portion, the embossed region is formed in a fitting region with the lid, and has a curled outer convex portion which is the convex portion protruding from the inner circumferential surface of the body portion; 2. The cup container according to claim 1,

3. The curled portion is A bent portion that forms the periphery of the body portion; A folded portion folded back outward from the bent portion as a starting point; A facing portion that is covered by the folded portion; having an interior of the curled portion is defined by the bent portion, the folded-back portion, and the facing portion; the curled outer convex portion protrudes from the facing portion; 3. The cup container according to claim 2,

4. the lid has an inverted tapered portion that expands outwardly from top to bottom and faces the fitting region of the body; 3. The cup container according to claim 2,

5. The curled portion is A bent portion that forms the periphery of the body portion; A folded portion folded back outward from the bent portion as a starting point; A facing portion that is covered by the folded portion; having an interior of the curled portion is defined by the bent portion, the folded-back portion, and the facing portion; the embossed region has the curled inner convex portion on the folded portion, the facing portion, or both; 2. The cup container according to claim 1,

6. The embossed region has at least the curled inner convex portion in the folded portion, The curled inner convex portion of the folded portion is elongated to be thinner than the curled inner convex portion of the facing portion; 6. The cup container according to claim 5,

7. The embossed area is a first convex region in the folded portion, the first convex region being a region in which the inner curled convex portion is formed; a second convex region in the facing portion, which is a region in which the curled inner convex portion is formed; a smooth region having no irregularities and located between the first convex region and the second convex region; having the bent portion is formed to include the smooth region; 6. The cup container according to claim 5,

8. the embossed region is formed from a lower end or a middle height of the body portion to a range forming the curled portion, and has the convex portion on an outer surface of the body portion; 9. The cup container according to claim 1, wherein

9. Providing a foamed resin layer on the outer surface of the body; 9. The cup container according to claim 1, wherein

10. Providing a resin coating layer on the inner surface of the body; The cup container according to claim 8,

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