JP6845644B2 - Cup containers and cup packaging - Google Patents

Description

The present invention relates to a cup container and a cup package made of resin.

For example, a cup container made of resin is widely used as a container for storing foods such as jelly. Patent Document 1 discloses an example of a conventional cup container. The cup container has a tubular portion that opens on one side in the axial direction, a bottom portion that closes the tubular portion, and a leg portion that extends from the bottom portion to the side opposite to the tubular portion. The tubular portion has a large diameter portion located on the opening side, a small diameter portion located on the bottom side, and an intermediate portion connecting the large diameter portion and the small diameter portion. Further, the tubular portion has a plurality of ribs. Each of these ribs extends in the axial direction and protrudes in the radial direction from the small diameter portion. By providing a plurality of ribs, the cup container is made highly rigid.

On the other hand, the height of the plurality of ribs is constant over the entire length of each rib. Therefore, when gripping the cup container, the finger is completely separated from the tubular portion, and only the tips of the plurality of ribs come into contact with the finger. In such a case, the gripper may be given an unpleasant tactile sensation. Further, if the portion is slippery due to circumstances such as water droplets adhering to the gripped portion, the cup container may slip off from the gripped hand.

Japanese Unexamined Patent Publication No. 2011-042381

The present invention has been devised under the above circumstances, and an object of the present invention is to provide a cup container and a cup package that can be gripped more stably.

The cup container provided by the first aspect of the present invention includes a tubular portion that opens on one side in the axial direction and a bottom portion that connects the tubular portion to the other side in the axial direction. A large-diameter portion located on one side in the axial direction, a small-diameter portion located on the other side in the axial direction with respect to the large-diameter portion and having a smaller diameter than the large-diameter portion, and the large-diameter portion in the axial view. A cup container made of resin, which is located between the small diameter portion and an intermediate portion connecting the large diameter portion and the small diameter portion, and each of the tubular portions is along the axial direction. First transition having a plurality of ribs extending in the radial direction and extending radially from the small diameter portion, each of which is connected to the intermediate portion and whose radial dimension becomes larger as it approaches the intermediate portion in the axial direction. part have a, the small diameter portion, as the thickness approaches the middle portion in and the axial direction leads to the intermediate portion is characterized by having a second transition portion becomes larger.

In a preferred embodiment of the present invention, the radial tip edge of each rib and the surface of the large diameter portion coincide with each other in the radial position and angle at the connecting portion.

In a preferred embodiment of the present invention, each rib has a first constant portion that is connected to the first transition portion on the other side in the axial direction and has a constant radial dimension.

In a preferred embodiment of the present invention, the small diameter portion has a second constant portion that is connected to the second transition portion in the axial direction and has a constant thickness.

In a preferred embodiment of the present invention, the positions of the other end in the axial direction of the first transition portion and the other end in the axial direction of the second transition portion are substantially the same.

The cup package provided by the second aspect of the present invention closes the cup container provided by the first aspect of the present invention, the contents contained in the cup container, and the opening of the cup container. It is characterized by including a sealing material and an exterior film that covers the tubular portion of the cup container.

According to the present invention, the height of the first transition portion of the plurality of ribs is higher as it approaches the intermediate portion. In other words, the height of the first transition portion decreases as the distance from the intermediate portion increases. Therefore, when gripping the cup container, if a portion relatively far from the intermediate portion is gripped, both the tips of the plurality of ribs and the tubular portion can be touched with a finger, and a plurality of ribs can be touched. It is possible to prevent only the tip of the rib of the rib from hitting the finger strongly. Thereby, the tactile sensation when the cup is gripped can be improved. Further, when the portion relatively far from the intermediate portion is gripped, the radial dimension of the portion closer to the intermediate portion than the intermediate portion is remarkably expanded due to the shape of the first transition portion. Therefore, even if the cup container is in a slippery state, the cup container can be gripped more reliably.
Further, the small diameter portion has a second transition portion that is connected to the intermediate portion and becomes thicker as it approaches the intermediate portion in the axial direction, similarly to the first transition portion. Therefore, in the manufacturing process of the cup container, for example, when injection molding is adopted, it is possible to prevent the resin material from flowing into the first transition portion of the plurality of ribs in an excessively biased manner, and to the second transition portion. It is possible to allow the resin material to flow in more reliably. Therefore, according to this cup container, it is possible to suppress defects and perforations during manufacturing.

Other features and advantages of the present invention will become more apparent with the detailed description given below with reference to the accompanying drawings.

It is a perspective view which shows the cup container based on 1st Embodiment of this invention. It is a front view which shows the cup container based on 1st Embodiment of this invention. It is a bottom view which shows the cup container based on 1st Embodiment of this invention. It is sectional drawing which follows the IV-IV line of FIG. It is an enlarged sectional view of the main part which shows the cup container based on 1st Embodiment of this invention. It is a perspective view which shows the cup package body based on 1st Embodiment of this invention. It is an enlarged sectional view of the main part which shows the cup container based on 2nd Embodiment of this invention. It is an enlarged sectional view of the main part which shows the cup container based on 3rd Embodiment of this invention. It is an enlarged sectional view of the main part which shows the cup container based on 4th Embodiment of this invention. It is an enlarged sectional view of the main part which shows the cup container based on 5th Embodiment of this invention. It is an enlarged sectional view of the main part which shows the cup container based on 6th Embodiment of this invention.

Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

1 to 5 show a cup container based on the first embodiment of the present invention. The cup container A1 of the present embodiment includes a tubular portion 1, a bottom portion 2, and a leg portion 3. The cup container A1 is used for, for example, the cup package B1 described later, and contains a predetermined content. The cup container A1 is formed by injection molding, for example, and its material is made of a general-purpose thermoplastic resin such as PE (polyethylene), PP (polypropylene), PS (polystyrene), and the like.

FIG. 1 is a perspective view showing a cup container A1. FIG. 2 is a front view showing the cup container A1. FIG. 3 is a bottom view showing the cup container A1. FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 3, and FIG. 5 is an enlarged cross-sectional view of a main part in the same cross section. In these figures, the axial direction of the tubular portion 1 is the axial direction z, the radial direction is the radial direction r, and the circumferential direction is the circumferential direction θ.

The tubular portion 1 is a portion that opens on one side of the axial direction z (the upper side of the axial direction z in FIGS. 1 and 4), and has a large diameter portion 11, an intermediate portion 12, a small diameter portion 13, a plurality of ribs 14, and a flange. It has a part 16. In the illustrated example, the tubular portion 1 has a substantially cylindrical shape, but is not limited to this, and may be, for example, a polygonal tubular shape or the like.

The large-diameter portion 11 is located on the opening side in the axial direction z, and is a portion having a relatively large radial r dimension. The large-diameter portion 11 is a portion in which significant unevenness or the like is not provided and the radial r dimension is almost constant. The dimensions of the large diameter portion 11 are not particularly limited, and for example, the inner diameter is about 63 mm, the height in the axial direction z is about 10 mm, and the thickness is about 0.5 mm.

The intermediate portion 12 is interposed between the large diameter portion 11 and the small diameter portion 13 to connect both of them, and is located between the large diameter portion 11 and the small diameter portion 13 in the axial z view as shown in FIG. are doing. In the illustrated example, the intermediate portion 12 is an annular plate-shaped portion substantially perpendicular to the axial direction z. The dimensions of the intermediate portion 12 and the like are not particularly limited, and for example, the width in the radial direction r is about 3 mm and the thickness is about 0.5 mm.

The small diameter portion 13 is located on the other side in the axial direction z (the lower side in the axial direction in FIGS. 1 and 2) with respect to the large diameter portion 11, and is a portion having a smaller diameter than the large diameter portion 11. In the illustrated example, the small diameter portion 13 has a tapered shape in which the diameter decreases from the large diameter portion 11 toward the bottom portion 2 in the axial direction z. The dimensions of the small diameter portion 13 are not particularly limited, and for example, the inner diameter on the intermediate portion 12 side in the axial direction z is about 58 mm, the inner diameter on the bottom 2 side is about 45 mm, and the height in the axial direction z is 50 mm. Degree. The taper angle of the small diameter portion 13 is, for example, about 6 degrees (one side).

As shown in FIGS. 4 and 5, the small diameter portion 13 has a second transition portion 131 and a second constant portion 132. For convenience of understanding, the right portion of the IV-IV line in FIG. 3 intersects the rib 14, and the left portion in the figure passes through a position deviated from the rib 14 in the circumferential direction θ. ing. Therefore, in FIG. 4, the cross section of the rib 14 is shown in the right half of the figure, and the cross section of the small diameter portion 13 and the outer shape of the rib 14 are shown in the left half of the figure.

The second transition portion 131 is connected to the intermediate portion 12, and is a portion whose thickness increases as it approaches the intermediate portion 12 in the axial direction z. That is, the thickness t2 at the upper end (joint end with the intermediate portion 12) in the axial z diagram is larger than the thickness t1 at the lower end in the axial z diagram of the second transition portion 131. Further, in the illustrated example, the thickness of the second transition portion 131 is set so as to increase linearly in the axial direction z from the thickness t1 to the thickness t2. The dimensions and the like of the second transition portion 131 are not particularly limited, and in the illustrated example, the thickness t1 is about 0.25 mm, the thickness t2 is about 0.5 mm, and the axial z dimension is about 15 mm. ..

The second constant portion 132 is located on the other side in the axial direction z (lower side in the axial direction in FIGS. 4 and 5) with respect to the second transition portion 131. The second constant portion 132 is a portion having a constant thickness, and the thickness thereof is, for example, the same as the thickness t1 of the second transition portion 131. The dimensions and the like of the second constant portion 132 are not particularly limited, and the thickness is about 0.25 mm and the axial z dimension is about 35 mm.

As shown in FIGS. 1 to 3, each of the plurality of ribs 14 extends along the axial direction z and projects radially from the small diameter portion 13 in the radial direction r. In the illustrated example, the plurality of ribs 14 are arranged at substantially equal pitches in the circumferential direction θ. The shape of the rib 14 in a cross section perpendicular to the axial direction z is not particularly limited, and in the illustrated example, it is, for example, a mountain cross section.

In this embodiment, the rib 14 has a first transition portion 141 and a first constant portion 142. The first transition portion 141 is connected to the intermediate portion 12, and the closer to the intermediate portion 12 in the axial direction z, the larger the radial r dimension. That is, the height h2, which is the radial r dimension at the axial z upper end (joint end with the intermediate portion 12), is larger than the radial r dimension (height h1) at the axial z lower end of the first transition portion 141. is there. Further, in the present embodiment, the tip edge 145 of the first transition portion 141 and the surface of the large diameter portion 11 have the same positions and angles in the radial direction r at the connecting portions. That is, the tip edge 145 of the first transition portion 141 and the surface of the large diameter portion 11 are smoothly connected so as not to have a clear step portion or corner portion at the connection portion with each other. The height of the first transition portion 141 is set so as to increase in a quadratic curve with respect to the axial direction z from the height h1 to the height h2. The dimensions of the first transition portion 141 and the like are not particularly limited, and in the illustrated example, the height h1 is about 0.7 mm, the height h2 is about 3 mm, and the axial z dimension is about 15 mm.

The second transition portion 131 of the small diameter portion 13 and the first transition portion 141 of the rib 14 are both connected to the intermediate portion 12. Therefore, the second transition portion 131 and the first transition portion 141 have a relationship in which at least a part of both overlaps in the axial direction z. In the illustrated example, the positions of the lower end of the first transition portion 141 in the axial direction z and the lower end of the second transition portion 131 in the axial direction z are substantially the same in the axial direction z. In other words, the ranges in which the second transition section 131 and the first transition section 141 are provided are substantially coincident with each other in the axial direction z. That is, the portion where the thickness of the second transition portion 131 is the thickness t1 and the portion where the height of the first transition portion 141 is the height h1 are set at substantially the same position in the axial direction z. It should be noted that the positions of the lower end of the first transition portion 141 in the axial direction z and the lower end of the second transition portion 131 in the axial direction z are substantially the same in the axial direction z. It refers to a relationship within 10% of the z-direction dimension of the small diameter portion 13.

The first constant portion 142 is located on the other side in the axial direction z (lower side in the axial direction in FIGS. 4 and 5) with respect to the first transition portion 141. The first constant portion 142 is a portion having a constant height, and the height thereof is, for example, the same as the height h1 of the first transition portion 141. Further, in the illustrated example, the tip edge 145 of the first transition portion 141 and the tip edge 146 of the first constant portion 142 have the same positions and angles in the radial direction r at the connecting portions. That is, the tip edge 145 and the tip edge 146 are smoothly connected so as not to have a clear stepped portion or corner portion at the connecting portion with each other. The dimensions and the like of the first constant portion 142 are not particularly limited, and the height is about 0.7 mm. Further, in the illustrated example, the first constant portion 142 is provided so as to extend from the small diameter portion 13 to the leg portion 3.

The bottom portion 2 is connected to the small diameter portion 13 on the other side in the axial direction z, and closes the small diameter portion 13. In the illustrated example, the bottom portion 2 has an axial z-viewing circle shape. The dimensions of the bottom portion 2 and the like are not particularly limited, and in the illustrated example, the diameter is about 45 mm and the thickness is about 0.55 mm. Further, the illustrated bottom portion 2 has an injection portion 21. The injection portion 21 is located at the center of the bottom portion 2 in the axial direction z-view, and is a portion slightly thicker than the peripheral portion. The injection unit 21 is a portion corresponding to a gate into which the resin material is injected in, for example, injection molding when manufacturing the cup container A1.

The flange portion 16 is connected to the open end of the large diameter portion 11 and extends outward in the radial direction. In the illustrated example, the flange portion 16 is an annular plate-shaped portion in the axial z view. The dimensions of the flange portion 16 and the like are not particularly limited, and in the illustrated example, the outer shape is about 70 mm, the radial r dimension is about 4.7 mm, and the thickness is about 0.8 mm.

The leg portion 3 extends downward in the axial direction z from the boundary between the tubular portion 1 and the bottom portion 2, and is, for example, a substantially cylindrical portion. The legs 3 serve, for example, serve as a ground contact portion when the cup container A1 and the cup package B1 using the cup container A1 are erected, and also serve a function of improving the rigidity of the cup container A1.

FIG. 6 shows an example of a cup package using the cup container A1. The illustrated cup package B1 includes a cup container A1, an exterior film 4, a sealing material 5, and a content 6. The figure shows a state in which the cup package B1 is opened by peeling a part of the sealing material 5 from the cup container A1.

The exterior film 4 covers the tubular portion 1 of the cup container A1 and is for adjusting the appearance of the cup package B1 and exhibiting a heat retaining function. The material of the exterior film 4 is not particularly limited, and typically, a resin film called a so-called shrink film, which is attached to the tubular portion 1 by heat shrinkage, is preferably used. When such an exterior film 4 is used, the exterior film 4 covers the tubular portion 1 in a state of having tension, so that the exterior film 4 has an appearance in which the shapes of the tip edges of the plurality of ribs 14 are highlighted. By attaching the exterior film 4 which is a shrink film, the cup container A1 can be reinforced by the shrinkage stress, and the strength of the cup package B1 can be maintained while thinning the cup container A1. Become.

Specific examples of the resin film constituting such an exterior film 4 include a polyester-based material such as linear low-density polyethylene (LLDPE), low-density polyethylene (LDPE), high-density polyethylene (HDPE), and polypropylene (PP). Polyester-based, polystyrene-based (PS) such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and polylactic acid (PLA), polyamide, and ethylene vinyl acetate copolymer (EVA), ethylene-acrylic acid Examples thereof include a film made of a vinyl-based resin such as a polymer (EAA) and polyvinyl chloride. Further, a film containing a resin mixture in which two or more kinds of these resins are mixed can be used, or a laminated film in which two or more kinds of films are laminated can be used. Further, the exterior film 4 may further have a printing layer for printing, for example, an explanation about the content 6.

The sealing material 5 is for sealing the inside of the tubular portion 1, and is detachably joined to, for example, the flange portion 16. The material of the sealing material 5 is not particularly limited, and a resin, a paper material, a metal film, or the like is appropriately adopted. For example, a printing layer for printing the product name of the content 6 may be provided on the upper surface of the sealing material 5.

The content 6 is a product housed in the cup container A1, and various objects such as a liquid, a gel-like object, and a powder or granular material are selected. Specific examples of the content 6 include foods such as yogurt, jelly, and pudding, and liquid and powder seasonings.

Next, the actions of the cup container A1 and the cup package B1 will be described.

According to the present embodiment, the height of the first transition portion 141 of the plurality of ribs 14 is higher as it approaches the intermediate portion 12. In other words, the height of the first transition portion 141 decreases as the distance from the intermediate portion 12 increases. Therefore, when gripping the cup container A1 or the cup package B1, if a portion relatively far from the intermediate portion 12 is gripped, both the tips of the plurality of ribs 14 and the tubular portion 1 can be touched with fingers. It is possible to prevent only the tips of the plurality of ribs 14 from strongly hitting the finger. Thereby, the tactile sensation when the cup container A1 or the cup package B1 is gripped can be improved. Further, when the portion relatively far from the intermediate portion 12 is gripped, the radial r dimension of the portion closer to the intermediate portion 12 than the intermediate portion 12 is remarkably expanded due to the shape of the first transition 141 portion. Therefore, even if the cup container A1 or the cup package B1 is in a slippery state, the cup container A1 or the cup package B1 can be gripped more reliably.

Further, when, for example, injection molding is adopted in the manufacturing process of the cup container A1, the resin material is injected from the vicinity of the injection portion 21 of the bottom portion 2. This resin material flows from the bottom portion 2 of the mold to the voids for forming the small diameter portion 13, the intermediate portion 12, and the large diameter portion 11. At this time, the resin material flowing through the small diameter portion 13 also flows through the rib 14. In particular, the first transition portion 141 of the rib 14 is a portion whose height increases as it approaches the intermediate portion 12 in the axial direction z, so that the inflow amount of the resin material is relatively large. As the inflow amount of the resin material into the plurality of ribs 14 increases, the possibility that the inflow amount of the resin material into the small diameter portion 13 becomes insufficient increases. Such a shortage of the resin material causes, for example, a loss of the small diameter portion 13 due to an air pool and a hole opening. In the present embodiment, the small diameter portion 13 is provided with the second transition portion 131. The second transition portion 131 is connected to the intermediate portion 12 like the first transition portion 141, and the thickness increases as it approaches the intermediate portion 12 in the axial direction z. Therefore, it is possible to prevent the resin material from flowing into the first transition portion 141 of the plurality of ribs 14 in an excessively biased manner, and to allow the resin material to flow into the second transition portion 131 more reliably. .. Therefore, according to the cup container A1, it is possible to suppress defects and perforations during manufacturing. In particular, when the wall thickness of the small diameter portion 13 is reduced to 0.3 mm or less, the resin easily flows into the first transition portion 141, and as a result, it becomes more difficult to uniformly fill the resin, and the vicinity of the first transition portion 141 There is a greater risk of perforation in the small diameter portion 13. The present embodiment provided with the second transition portion 131 is suitable for suppressing the opening of holes in the case of the cup container A1 having the small diameter portion 13 having such a thin wall thickness.

In particular, in the present embodiment, the positions of the lower end of the axial z of the first transition portion 141 and the lower end of the axial z of the second transition portion 131 are substantially the same. That is, at a position where the rib 14 substantially coincides with the portion where the rib 14 has transitioned from the first constant portion 142 to the first transition portion 141, the small diameter portion 13 has transitioned from the second constant portion 132 to the second transition portion 131. Therefore, the position where the resin inflow amount increases in the rib 14 and the position where the resin inflow amount increases in the small diameter portion 13 coincide with each other. Therefore, it is suitable for properly maintaining the balance of the resin inflow amount between the small diameter portion 13 and the plurality of ribs 14.

The tip edge 145 of the rib 14 has the same position and angle in the radial direction r on the surface of the large diameter portion 11 and the connection portion with each other, and is smoothly connected. As a result, as shown in FIG. 6, it is possible to prevent the exterior film 4 from having a remarkable stepped portion or a corner portion at the boundary between the large diameter portion 11 and the small diameter portion 13 of the cup package B1. .. This is preferable for preventing damage to the exterior film 4 and for finishing the appearance of the exterior film 4 beautifully.

The rib 14 has a first constant portion 142. By providing the first constant portion 142, it is possible to increase the rigidity of the second constant portion 132, which is relatively thin. Further, as the thickness of the second constant portion 132 becomes thinner, the inflow resistance of the resin material increases, and it becomes difficult for the resin material to uniformly flow into the second constant portion 132. In the present embodiment, it can be expected that the first constant portion 142 of the plurality of ribs 14 functions as a so-called bypass path that widely spreads the resin material over the entire second constant portion 132.

7 to 11 show other embodiments of the present invention. In these figures, the same or similar elements as those in the above embodiment are designated by the same reference numerals as those in the above embodiment.

FIG. 7 shows a cup container based on the second embodiment of the present invention. The cup container A2 of the present embodiment is different from the above-described embodiment in the relationship between the second transition portion 131 and the first transition portion 141. In the present embodiment, all of the second transition portions 131 overlap with the first transition portion 141 in the axial direction z. On the other hand, the first transition portion 141 has a portion located below the axial direction z of the second transition portion 131. That is, the lower end of the first transition portion 141 in the axial direction z is located below the lower end of the second transition portion 131 in the axial direction z. In the illustrated example, the axial z dimension of the first transition portion 141 is about 15 mm, and the axial z dimension of the second transition portion 131 is about 7 mm.

Also in this embodiment, the cup container A2 can be gripped more reliably. Further, the second transition unit 131 is provided in a narrow range in the axial direction z as compared with the first transition unit 141. Therefore, it is possible to reduce the portion where the small diameter portion 13 becomes thick while improving the flow of the resin material, which is suitable for reducing the weight of the cup container A1.

FIG. 8 shows a cup container based on the third embodiment of the present invention. The cup container A3 of the present embodiment is different from the above-described embodiment in the specific configuration of the second transition portion 131. In the present embodiment, the thickness of the second transition portion 131 gradually increases toward the intermediate portion 12 in the axial direction z. In the illustrated example, the second transition portion 131 is configured to have five levels of thickness. As understood from the present embodiment, the second transition portion 131 in the present invention is not only one in which the thickness of the cup container A1 and the cup container A2 changes linearly (continuously), but also as in the present embodiment. Does not have a configuration in which the thickness changes stepwise, and the thickness once increased decreases in the middle.

Also in this embodiment, the cup container A3 can be gripped more reliably. Further, even if the thickness of the second transition portion 131 is changed stepwise, a function of balancing the resin inflow amount into the small diameter portion 13 and the resin inflow amount into the plurality of ribs 14 can be expected.

FIG. 9 shows a cup container based on the fourth embodiment of the present invention. The cup container A4 of the present embodiment is different from the above-described embodiment in the relationship between the second transition portion 131 and the first transition portion 141. In the present embodiment, all of the first transition portions 141 overlap with the second transition portion 131 in the axial direction z. On the other hand, the second transition portion 131 has a portion located below the axial direction z of the first transition portion 141. That is, the lower end of the first transition portion 141 in the axial direction z is located above the lower end of the second transition portion 131 in the axial direction z.

Also in this embodiment, the cup container A5 can be gripped more reliably. Further, by providing the second transition portion 131 in a relatively wide range, it is possible to more reliably secure the inflow of the resin material into the portion forming the small diameter portion 13.

FIG. 10 shows a cup container based on the fifth embodiment of the present invention. The cup container A5 of the present embodiment is different from the above-described embodiment in the configuration of the small diameter portion 13. In the present embodiment, the small diameter portion 13 is composed of only the second constant portion 132, and does not have the second transition portion 131 described above. That is, in the present embodiment, the thickness of the small diameter portion 13 is constant at the thickness t1. On the other hand, the rib 14 is provided with a first transition portion 141, and further is provided with a first constant portion 142.

Even with such an embodiment, the cup container A6 can be gripped more reliably. Further, since the entire small diameter portion 13 is the second constant portion 132, the thickness of the cup container A5 can be reduced.

FIG. 11 shows a cup container based on the sixth embodiment of the present invention. The cup container A6 of the present embodiment has a rib 14 structure different from that of the above-described embodiment. In the present embodiment, the rib 14 is composed of only the first transition portion 141 and does not have the first constant portion 142. That is, in the present embodiment, although the rib 14 (first transition portion 141) is provided on the intermediate portion 12 side (upper side in the drawing) in the axial direction z of the large diameter portion 11, the shaft of the small diameter portion 13 The rib 14 is not provided on the other side (lower side in the figure) in the direction z. A smooth substantially cylindrical outer surface is maintained in the portion of the small diameter portion 13 where the rib 14 is not provided.

On the other hand, also in this embodiment, the small diameter portion 13 is provided with the second transition portion 131 and the second constant portion 132. In the illustrated example, the relationship between the second transition portion 131 and the first transition portion 141 is similar to the relationship in the cup container A1, but may be the relationship in the cup containers A2 to A5.

Also in this embodiment, it is possible to suppress defects and holes in the cup container A6 during production. In particular, the configuration of the present embodiment is preferably applied when the thickness of the second constant portion 132 is relatively large with respect to the thickness of the cup containers A1 to A3, for example. If the thickness of the second constant portion 132 is large to some extent, it is possible to maintain the resin inflow of the second constant portion 132 without providing the first constant portion 142 on the rib 14. Further, even if the first constant portion 142 does not contribute to the improvement of the rigidity, the second constant portion 132 itself can be increased in rigidity.

The cup container and the cup package according to the present invention are not limited to the above-described embodiments. The specific configuration of each part of the cup container and the cup package according to the present invention can be freely redesigned.

A1 to A6: Cup container B1: Cup package 1: Cylindrical part 2: Bottom part 3: Leg part 4: Exterior film 5: Encapsulant material 6: Contents 11: Large diameter part 12: Intermediate part 13: Small diameter part 14 : Rib 16: Flange portion 21: Injection portion 131: Second transition portion 132: Second constant portion 141: First transition portion 142: First constant portion 145, 146: Tip edge h1, h2: Height t1, t2: thickness

Claims (6)

A tubular part that opens on one side in the axial direction,
A bottom portion of the tubular portion connected to the other side in the axial direction is provided.
The tubular portion includes a large-diameter portion located on one side in the axial direction, a small-diameter portion located on the other side in the axial direction with respect to the large-diameter portion and having a smaller diameter than the large-diameter portion, and the axial direction. A cup container made of resin, which is visually located between the large diameter portion and the small diameter portion and has an intermediate portion connecting the large diameter portion and the small diameter portion.
The tubular portion has a plurality of ribs, each extending along the axial direction and projecting radially from the small diameter portion.
Each rib have a first transition portion the radial dimension closer to the middle portion in and the axial direction connected to the middle portion is large,
A cup container characterized in that the small-diameter portion has a second transition portion that is connected to the intermediate portion and becomes thicker as it approaches the intermediate portion in the axial direction. The cup container according to claim 1, wherein the radial tip edge of each rib and the surface of the large-diameter portion have the same radial position and angle at the connecting portion with each other. The cup container according to claim 1 or 2, wherein each rib is connected to the other side in the axial direction with respect to the first transition portion and has a first constant portion having a constant radial dimension. The cup container according to any one of claims 1 to 3, wherein the small diameter portion has a second constant portion that is connected to the second transition portion on the other side in the axial direction and has a constant thickness. The cup container according to claim 4 , wherein the positions of the other end in the axial direction of the first transition portion and the other end in the axial direction of the second transition portion are substantially the same. The cup container according to any one of claims 1 to 5.
The contents contained in the cup container and
A sealing material that closes the opening of the cup container and
An exterior film that covers the tubular portion of the cup container, and
A cup package, characterized in that it comprises.

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