JP5209673B2 - Packaging container - Google Patents

Description

  The present invention relates to a so-called bowl-shaped packaging container having a substantially circular opening edge, which is easy to hold, improves strength, and relates to a packaging container that can improve design.

  Conventionally, a packaging container in which a resin sheet or a foamed sheet is thermoformed is known as a container for packaging food. And in this packaging container, bowls such as rice cakes and parent and child bowls are put, and packaging containers containing the bowls are displayed and sold at food supermarkets and department stores.

  As an example of such a packaging container having a uniform shape, for example, a container formed in a shape in which the side wall of the container bulges outward has been proposed (see, for example, Patent Document 1).

  Further, a plane portion parallel to each side of the square thread-like convex portion formed on the bottom surface of the container is raised upward from each side, and the adjacent plane portions are connected by a curved surface portion. There has also been proposed a container in which a side wall is formed so that the side wall is swollen outward (see, for example, Patent Document 2).

JP 2003-300516 A JP 2003-26139 A

  Both containers of Patent Documents 1 and 2 have a problem that it is difficult to put a finger on the side wall because the side wall bulges outward, and therefore it is difficult to hold the container.

  Moreover, since the container of the said patent document 2 has arrange | positioned the curved-surface part and the plane part alternately in the circumferential direction, there also exists a problem that it looks bad.

  Moreover, in the container of the said patent document 1, it is a shape where the side wall swelled outside smoothly, and in the container of the said patent document 2, although a side wall is alternately provided with a curved surface part and a plane part in the circumferential direction, Has a problem that the strength of the container itself is weak in any container.

  Then, this invention is made | formed in view of this situation, and makes it a subject to provide the packaging container which is easy to have, can improve intensity | strength, and can improve design property.

The packaging container according to the present invention is a packaging container in which an opening edge portion forming an opening at the upper end of a container body formed by thermoforming a resin sheet is formed in a substantially circular shape, and the container body is An opening edge, a bottom surface formed in a substantially circular shape smaller than the opening edge, and a side wall portion that connects the bottom surface and the opening edge and is molded integrally with the bottom surface and the opening edge. The side wall portion extends from the bottom surface portion, and is formed into a curved shape that curves so as to be convex toward the inside of the container body, and extends from the curved portion to the opening edge portion. a out the extending portion, the between the curved portion and the extending portion, said being at least in part on the bent portion is formed in the circumferential direction of the side wall portions, in the circumferential direction of the bent portion one Projecting part protruding toward the outside of the container body from other parts in the circumferential direction Provided, thereby, wherein the side wall portion is formed in plan view polygonal shape formed position of the bent portion.

According to the present invention, for example, a thumb can be applied to the opening edge and another finger can be applied to the curved portion of the side wall, so that it is easy to hold the packaging container. Further, even when the packaging container is placed on the palm of one hand, each finger can easily fit the curved portion of the side wall, and the packaging container can be easily held.
Moreover, since the bending part is provided in at least one part in the circumferential direction between a curved part and the extension part, the intensity | strength of the packaging container can be improved.
In addition, the curved portion and the extending portion are continuous in the vertical direction via the bent portion, and have a protruding portion that protrudes toward the outside of the container body at a part of the circumferential direction of the bent portion. Since the side wall is formed in a polygonal shape in plan view at the formed position, the strength can be increased, the design of the packaging container can be improved, and the willingness to purchase can be promoted.

Further, in the packaging container according to the present invention, a plurality of the projecting portions are provided at equal intervals in the circumferential direction, whereby the side wall portion is aligned in a plan view at the position where the bent portion is formed. It is preferably formed in a polygonal shape .

In the packaging container having such a configuration , it can be seen that the shape changes to a substantially circular shape of the bottom surface portion, a polygonal shape formed by a plurality of bent portions in the middle of the side wall portion, and a substantially circular shape of the opening edge portion. As a result, the design can be further improved .

Further, in the packaging container according to the present invention, the cross-sectional shape of the side wall portion is outwardly widened toward the upper side, is circular at the curved portion, and is a regular polygon at the position where the bent portion is formed, It is preferable that the extending portion has a circular shape, and the cross-sectional shape continuously changes in the vertical direction .

In the packaging container having such a configuration, the lateral cross-sectional shape of the side wall portion extends outwardly toward the upper side, is circular at the curved portion, and is a regular polygonal shape at the position where the bent portion is formed, and the extended portion. Since the shape is circular and the cross-sectional shape can be seen to change continuously in the vertical direction , the design can be further improved.

  As described above, according to the packaging container of the present invention, the bent portion is formed at least in the circumferential direction of the side wall portion between the curved portion and the extending portion, so that it is easy to hold and the strength is improved. At the same time, it is possible to provide a packaging container that can improve the design and promote the consumer's willingness to purchase when food is put in the container.

The perspective view which shows the container main body and cover body of the container for packaging which concern on one Embodiment of this invention is shown. The front view of the container main body of the packaging container which concerns on the embodiment is shown. The top view of the container main body of the packaging container which concerns on the embodiment is shown. The perspective view which looked at the container main body of the packaging container which concerns on the embodiment from diagonally upward is shown. (A) is an end view taken along the line II in FIG. 2, (b) is an end view taken along the line II-II in FIG. 2, and (c) is an end view taken along the line III-III in FIG. (A) is an end view taken along line IV-IV in FIG. 3, and (b) is an end view taken along line VV in FIG. The schematic plan view which shows the shape of the bending part of the container main body of the packaging container which concerns on the embodiment is shown. The front view of the container main body of the container for packaging which concerns on 2nd Embodiment is shown. The top view of the container main body of the packaging container which concerns on 2nd Embodiment is shown. The perspective view which looked at the container main body of the packaging container which concerns on 2nd Embodiment from diagonally upward is shown. (A) is an end view taken along line AA in FIG. 8, (b) is an end view taken along line BB in FIG. 2, and (c) is an end view taken along line CC in FIG. 9A is an end view taken along the line DD in FIG. 9, and FIG. 9B is an end view taken along the line EE in FIG.

<First embodiment>
Hereinafter, a first embodiment of a packaging container according to the present invention will be described with reference to FIGS.

  As shown in FIG. 1, a packaging container 1 includes a bowl-shaped container body 2 that opens upward to accommodate food such as a bowl, and a lid for closing the opening 2 </ b> A of the container body 2. 3. The opening 2 </ b> A is formed at the upper end of the container body 2.

  The packaging container 1 may be a thermoformed resin sheet, in particular, a foamed sheet, and a foamed layer and a surface in which a resin film is laminated on one or both sides of the foamed sheet. A laminated resin sheet having a film layer can also be used.

The resin sheet is not particularly limited, and conventionally known ones can be used.
For example, a styrene resin alone, a copolymer resin of a monomer such as butadiene, maleic anhydride, α-methyl styrene, methacrylic acid and a styrene monomer copolymerizable with a styrene monomer, or a styrene resin and the above copolymer Mixtures with heat-resistant resins such as coalescing resins and polyphenylene ether resins, polypropylene resins, polyethylene terephthalate resins, etc., and physical foaming agents such as butane and pentane, and chemical foaming such as azodicarbonamide on these resins Examples thereof include a foamed sheet obtained by kneading with an extruder together with a foaming agent such as an agent, carbon dioxide, nitrogen, air, etc., and foamed by extrusion, and those obtained by laminating a resin film on one or both sides thereof.

The resin film laminated on one side or both sides of this foam sheet is, for example, a film made of styrene resin such as polystyrene resin, high impact polystyrene resin, heat resistant polystyrene resin, polyethylene resin, polypropylene resin, etc. A film made of a polyolefin resin, a film made of a polyester resin such as a polyethylene terephthalate resin, a film made of a resin having an excellent gas barrier property such as a polyvinyl alcohol resin or a polyvinylidene chloride resin is used. be able to.
Alternatively, it can be used as a film in which these films are laminated (laminated film) or a resin film in which these laminated films are laminated on a foam sheet.
In particular, when using a film made of a styrene resin or a copolymer resin used for a foam sheet, the whole is made of the same material, and the recyclability of the packaging container can be improved. This is preferable in terms of points.

  When used for forming the container body 2 of the packaging container 1 for containing food or the like, a foamed layer is usually formed in any thickness of 0.5 to 5 mm by the foamed sheet, and the resin film The resin sheet in which the surface film layer was formed in any thickness of 3 micrometers-500 micrometers can be used.

  The container body 2 may be a laminate of the above-described surface film that has been printed or colored, while the lid 3 is transparent in that the contents can be seen through the lid 3. It is preferable that

  As shown in FIGS. 1 to 5, the container body 2 includes a bottom surface portion 4, a side wall portion 5 extending upward from the outer peripheral edge of the bottom surface portion 4, and extending upward from the side wall portion 5. An opening edge portion 6 that forms the opening 2A and a folded portion 7 that is folded back from the upper end of the opening edge portion 6 and extends obliquely downward, and includes a bottom surface portion 4, a side wall portion 5, an opening edge portion 6, and a folded portion. The part 7 is integrally molded.

  As shown in FIGS. 3, 5 (a) and 6 (a), (b), the bottom surface portion 4 is formed in a circular shape in plan view, and is formed into a circular protruding portion 4 A whose inner portion is one step higher than the outer peripheral edge. By being formed, an annular groove 4M is formed on the outer peripheral edge along the circumferential direction. Further, a bulging portion 4B that bulges inward is formed on the outer edge of the groove 4M over the entire circumference in the circumferential direction, and the thickness of the outer edge of the bottom surface portion 4 is increased.

  The side wall 5 extends upward from the outer peripheral edge of the groove 4M of the bottom surface 4 and protrudes toward the inside of the container body 2 as shown in FIGS. 3 and 6A, 6B. And a curved portion 8 formed in a mortar shape that spreads outward toward the upper end side, and extends linearly from the upper end of the curved portion 8 to the opening edge portion 6, and outward toward the upper end side. And an extending portion 9 formed in a mortar shape that expands. In addition, the outer surface of the curved part 8 is formed in the smooth curved surface without an unevenness | corrugation in any of the circumferential direction and an up-down direction. Moreover, the outer surface of the extension part 9 is also formed in the smooth flat surface (flat surface) without an unevenness | corrugation in any of the circumferential direction and an up-down direction.

  And between the curved part 8 and the extension part 9 (boundary part), the bending part 10 of the inner fold bent by the inner side of the container main body 2 is formed in six places of the circumferential direction of the side wall part 5. As shown in FIG. . Among the bent portions 10, the bent portions 10 and 10 adjacent in the circumferential direction are not connected to each other, and six bent portions 10 exist independently in the circumferential direction. In the portion 10C between the adjacent bent portions 10, 10, the curved portion 8 and the extending portion 9 are smoothly connected in the vertical direction.

As shown in FIGS. 3, 5 (b) and 7, each bent portion 10 has a substantially triangular shape in plan view, and is formed such that its outer surface protrudes outward from the outer surface of the side wall portion 5. A pair of oblique sides 10B, 10B and a corner 10A connecting the pair of oblique sides 10B, 10B are provided. The corner portion 10A is formed in a curved shape so as to protrude outward at the center portion in the circumferential direction. The oblique sides 10B and 10B are formed in a straight line so as to be continuous with the corner 10A in a tangential manner. That is, in the bent portion 10 of the first embodiment, the corner portion 10A that is a part in the circumferential direction is a protruding portion that protrudes outward from the oblique sides 10B and 10B that are other portions in the circumferential direction. .
The bent portions 10 are formed at six locations at regular intervals in the circumferential direction so that each has a predetermined region 10R in the circumferential direction, and there are six bent portions present at intervals in the circumferential direction. 10, a substantially regular hexagonal pattern is formed in plan view.

  In the first embodiment, the boundary between the curved portion 8 and the extending portion 9 is set to a position slightly above the vertical half of the container body 2. The position may be a position slightly lower than the position that is half the vertical direction of the container body 2. In any case, any position may be used as long as it is an intermediate portion in the vertical direction of the container body 2 excluding the positions close to the upper and lower ends of the container body 2.

  As shown in FIGS. 3, 5 (c) and FIGS. 6 (a) and 6 (b), the opening edge 6 expands from the upper end of the side wall portion 5, that is, from the upper end of the extending portion 9 to the upper end side. It extends in a straight line obliquely upward. The opening edge portion 6 is bent toward the inside of the container body 2 with respect to the extending portion 9, and is formed over the entire circumference in the circumferential direction. By forming the opening edge 6 in this way, an annular and belt-like inner edge is formed at the upper end portion of the container body 2, and a circular opening larger than the outer dimension of the bottom surface portion 4 is formed at the upper end of the edge. 2A is formed.

  As shown in FIG. 3 and FIGS. 6A and 6B, the folded portion 7 extends obliquely downward so as to be folded from the upper end of the opening edge portion 6 to the outside of the container body 2. The folded portion 7 forms an annular outer edge located outside the container body 2. In addition, the folded portion 7 has an outer edge line of a waveform (a sine wave, a triangular wave, a trapezoidal wave, etc.) in a side view by performing fine uneven processing and embossing by molding on the outer peripheral edge 7A of the lower end, that is, The outer edge line is not a straight line. Since the outer edge line eliminates the sharpness of the outer peripheral edge of the container body 2, for example, the fingertip when opening and closing the lid 3 can be protected, and a packaging film (not shown) is used. Thus, the packaging film can be prevented from tearing when lapping. Further, the strength of the outer peripheral edge of the container body 2 is increased, and there is an effect of preventing the container body 2 from being broken.

  On the other hand, as shown in FIG. 1, the lid body 3 is linearly and obliquely downward so as to increase in diameter from the outer peripheral edge of the lid body 11 toward the lower end side, in a closed state. The lid side wall part 12 extended, the lid flange part 13 extending substantially horizontally from the lower end of the lid side wall part 12 to the outside, and the diameter from the outer peripheral edge of the lid flange part 13 to the lower end side is increased. An engaging portion 14 that extends downward and is externally fitted to the folded portion 7 of the container main body 2 and a flange portion 15 that extends substantially horizontally from the lower end of the engaging portion 14 are provided.

  The lid body 11 is continuous with the outer peripheral edge of the main body portion 11A so as to be higher than the main body portion 11A by a main body portion 11A having a shape (substantially D shape) in which a part of a circular outer periphery is cut out linearly. It has a C-shaped outer peripheral edge portion 11B, and is provided with an inclined portion 16 that linearly extends obliquely downward from the cut-out straight portion 11a of the main body portion 11A to the lid flange portion 13. The inclined portion 16 is provided for attaching a label on which information (a product name, a price, a product code, etc.) related to contents stored in the container body 2 is printed, but may be omitted.

  The lid side wall portion 12 extends downward from the outer peripheral edge of the outer peripheral edge portion 11 </ b> B and is connected to both circumferential ends of the inclined portion 16.

  The lid flange portion 13 is configured as an annular plate-like portion extending in the substantially horizontal direction from the lower end of the lid side wall portion 12 toward the outside.

  A plurality of protrusions 17 are formed at a boundary portion between the lid side wall portion 12 and the lid flange portion 13 at appropriate intervals along the circumferential direction. These protrusions 17 are not overlapped with each other when a large number of the same lid 3 are stacked, so that the lids 3 and 3 are in close contact with each other, and the overlapping lids 3 and 3 are not easily peeled off. It is provided to prevent the lids 3 and 3 from sticking to each other.

  The engaging portion 14 has a stepped portion 14A protruding outward in two locations in the vertical direction, and has a three-step wall structure including three peripheral surfaces 14B protruding outward in a stepwise manner in the horizontal direction.

  At one place in the circumferential direction of the engaging portion 14, a bulging portion 18 that is open at the bottom and bulges outward is formed. Therefore, when removing the lid 3 attached to the container body 2, the lid 3 can be easily opened by inserting a finger from below the bulging portion 18.

  The flange 15 has a waveform (sinusoidal wave, triangular wave, etc.) in a side view by performing fine unevenness processing and embossing by molding on the outer peripheral edge, similarly to the outer peripheral edge 7A of the folded portion 7 of the container body 2. An outer edge line of a trapezoidal wave or the like, that is, an outer edge line that is not a straight line. Since the outer edge line eliminates the sharpness of the outer peripheral edge of the container body 1, for example, the fingertip when opening and closing the lid 3 can be protected, and a packaging film (not shown) is used. Thus, the packaging film can be prevented from tearing when lapping. Further, the strength of the outer peripheral edge of the container body 2 is increased, and there is an effect of preventing the container body 2 from being broken.

In the packaging container 1 configured as described above, since the side wall 5 of the container body 2 includes the curved portion 8, for example, a thumb is applied to the upper end of the opening edge 6 and the other fingers are placed on the side wall. The container main body 2 can be easily and reliably held by being applied to the outer surface of the curved portion 8 curved inside the portion 5. Further, even when the packaging container 1 is placed on the palm of one hand, each finger fits easily on the outer surface of the curved portion 8 curved inside the side wall portion 5 and is easy to hold.
Moreover, since the bending part 10 is provided in six places of the circumferential direction between the bending part 8 and the extension part 9, the intensity | strength of the packaging container 1 can be improved, and also the bending part 8 and extension The design of the packaging container 1 can be improved by the portion 9 being continuous in the vertical direction via the bent portion 10. Furthermore, as shown to Fig.5 (a), (b), (c), the container main body 2 is the circular shape of the bottom face part 4 (refer FIG. 5 (a)), side wall part in an order from the bottom face part 4 side. The shape changes continuously with a regular hexagonal shape (see FIG. 5B) formed by six bent portions 10 in the middle of 5, and further with a circular shape of the opening edge portion 6 (see FIG. 5C). Therefore, the design can be improved. In FIG. 5B, the outline line of the bottom face portion 4 is shown by a one-dot chain line so that the relationship between the bottom face portion 4 and the opening edge portion 6 with respect to the side wall portion 5 can be easily understood. Is indicated by a two-dot chain line.

<Second embodiment>
Next, a second embodiment according to the present invention will be described with reference to FIGS.
In the second embodiment, the same reference numerals are assigned to the same configurations as those in the first embodiment for convenience of explanation. 8 to 12, illustration of the lid 3 shown in FIG. 1 is omitted.

  As shown in FIGS. 8 to 10, the container body 2 includes a bottom surface portion 4, a side wall portion 5 extending upward from the outer peripheral edge of the bottom surface portion 4, and extending upward from the side wall portion 5. An opening edge 6 that forms the opening 2A and a folded portion 7 that is folded back from the upper end of the opening edge 6 and goes diagonally downward are provided. The bottom surface portion 4, the side wall portion 5, the opening edge portion 6, and the folded portion 7 are integrated. It is molded and configured.

  As shown in FIGS. 9, 11 (a) and 12 (a), (b), the bottom surface portion 4 is formed in a circular shape in plan view, and the inner portion excluding the outer peripheral edge is formed into a one-step higher circular protrusion 4 A. By forming, an annular groove 4M is formed in the outer peripheral edge along the circumferential direction. Further, a bulging portion 4B that bulges inward is formed at the outer peripheral edge of the groove 4M, and the thickness of the outer peripheral edge of the bottom surface portion 4 is increased.

  The side wall 5 extends upward from the outer peripheral edge of the groove 4M of the bottom surface 4 and protrudes toward the inside of the container body 2 as shown in FIGS. And a curved portion 8 formed in a mortar shape that spreads outward toward the upper end side, and extends from the upper end of the curved portion 8 to the opening edge 6 and protrudes toward the inside of the container body 2 And an extending portion 19 formed in a mortar shape that is outwardly widened toward the upper end side. In addition, the outer surface of the curved part 8 is formed in the smooth curved surface without an unevenness | corrugation in any of the circumferential direction and an up-down direction. Moreover, the outer surface of the extension part 19 is also formed in the smooth curved surface without an unevenness | corrugation in any of the circumferential direction and an up-down direction.

  An annular bent portion 100 is formed between the curved portion 8 and the extending portion 9 (boundary portion) by inward folding that is bent inside the container body 2 over the entire circumferential direction of the side wall portion 5. ing. The bent portion 100 is formed so that the outer surface of the entire circumference protrudes outward from the outer surface of the side wall portion 5.

  The bent portion 100 includes six projecting portions 100A provided along the circumferential direction, and a connecting portion 100B that couples the projecting portions 100A and 100A adjacent in the circumferential direction. The protrusions 100A are formed in a curved shape so as to protrude outward, and are provided at equal intervals in the circumferential direction. The connecting portion 100B is tangentially continuous with the protruding portion 100A, and is formed in a curved shape so as to protrude inward. That is, in the bent part 100 of the second embodiment, a protruding part 100A that is a part in the circumferential direction protrudes outside the connecting parts 100B and 100B that are other parts in the circumferential direction. As shown in FIGS. 9 and 11 (b), the bent portion 100 forms a substantially regular hexagonal pattern in plan view.

  In addition, in 2nd embodiment, although the boundary part of the curved part 8 and the extension part 19 is made into the position a little above the position which becomes the up-down direction half of the container main body 2, the up-down direction half of the container main body 2 The position may be a position slightly lower than the position that is half the vertical direction of the container body 2. In any case, any position may be used as long as it is an intermediate portion in the vertical direction of the container body 2 excluding the positions close to the upper and lower ends of the container body 2.

  The opening edge portion 6 and the folded portion 7 are provided with the outer edge line (not shown) on the outer peripheral edge at the lower end of the folded portion 7.

In the packaging container 1 configured as described above, since the side wall 5 of the container body 2 includes the curved portion 8, for example, a thumb is applied to the upper end of the opening edge 6 and the other fingers are placed on the side wall. The container main body 2 can be easily and reliably held by being applied to the outer surface of the curved portion 8 curved inside the portion 5. Further, even when the packaging container 1 is placed on the palm of one hand, each finger fits easily on the outer surface of the curved portion 8 curved inside the side wall portion 5 and is easy to hold.
Moreover, since the bending part 100 is provided in six places of the circumferential direction between the bending part 8 and the extension part 19, the intensity | strength of the packaging container 1 can be improved, and also the bending part 8 and extension The design of the packaging container 1 can be improved by the portion 19 being continuous in the vertical direction via the bent portion 10. Further, as shown in FIGS. 11A, 11B, and 11C, the container body 2 has a circular shape of the bottom surface portion 4 (see FIG. 11A) and a side wall portion in order from the bottom surface portion 4 side. The shape changes continuously with a regular hexagonal shape (see FIG. 11B) formed by six bent portions 100 in the middle of 5, and further with a circular shape of the opening edge 6 (see FIG. 11C). Therefore, the design can be improved. In FIG. 11 (b), the outline line of the bottom face portion 4 is indicated by a one-dot chain line, and the outline line of the opening edge portion 6 is represented by two lines so that the relationship between the bottom face portion 4 and the opening edge portion 6 with respect to the side wall portion 5 can be easily understood. It is indicated by a dotted line.

  The packaging container according to the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

  In the first embodiment and the second embodiment, the case where the packaging container has a so-called bowl shape has been described. However, the packaging container can be configured in other shapes such as a cup shape for containing a drink or soup.

  Further, in the first embodiment, six bent portions 10 are provided in an intermittent manner in the circumferential direction, and in the second embodiment, by providing an annular bent portion 100 continuous in the circumferential direction, in plan view Although a regular hexagonal pattern is formed, a regular pentagonal or regular octagonal pattern may be formed, or various polygonal patterns may be formed. Moreover, in both embodiment, although several protrusion part 10A, 100A was provided in the circumferential direction at equal intervals, you may provide at an irregular interval in the circumferential direction. In both embodiments, the bent portions 10 and 100 are provided with the protruding portions 10A and 100A. However, the bent portions 10 and 100 may be formed into a bent portion having a substantially circular shape in plan view without the protruding portion.

  Moreover, in said 1st embodiment and 2nd embodiment, although the packaging container 1 is comprised from the container main body 2 and the cover body 3 for closing 2 A of opening of this container main body 2, the cover body 3 Instead of this, the opening 2A of the container body 2 may be closed with a wrapping packaging film or the like, and the specific structure for closing the opening 2A of the container body 2 is not limited to the lid 3.

  Moreover, in said 1st embodiment and 2nd embodiment, the cover body 3 is comprised so that the outer diameter may be larger than the outer diameter of the container main body 2, and the engaging part 14 of the cover body 3 is the folding | returning part 7 of the container main body 2. The lid 3 is provided with the folded portion 7, the container body 2 is provided with the engagement portion 14, and the engagement portion 14 of the container body 2 is provided with the lid 3. You may comprise in the internal fitting structure which internally fits the folding | returning part 7. FIG.

  In the first embodiment and the second embodiment, the opening edge 6 is formed in a circular shape. However, the opening edge portion 6 is not limited to this, and may be an approximately circular shape such as an elliptical shape, an oval shape, or an egg shape. Moreover, although the bottom face part 4 was also configured in a circular shape, the shape is not limited to this, and may be a substantially circular shape such as an oval shape, an oval shape, or an egg shape.

  DESCRIPTION OF SYMBOLS 1 ... Packaging container, 2 ... Container body, 2A ... Opening, 3 ... Lid, 4 ... Bottom part, 4A ... Projection part, 4B ... Swelling part, 4M ... Groove, 5 ... Side wall part, 6 ... Opening edge part , 7 ... folded portion, 7A ... outer peripheral edge, 8 ... curved portion, 9 ... extended portion, 10, 100 ... bent portion, 10A ... corner portion (projecting portion), 10B ... oblique side portion, 10R ... predetermined region, 11 ... Cover body, 11A: Body part, 11B: Outer peripheral edge part, 11a: Straight line part, 12: Cover side wall part, 13: Cover flange part, 14: Engagement part, 15: Gutter part, 16 ... Inclined part, 17 ... Projection , 18 ... bulging part, 19 ... extension part, 100A ... projecting part

Claims (3)

A packaging container in which an opening edge forming an opening at the upper end of a container body formed by thermoforming a resin sheet is formed in a substantially circular shape,
The container body connects the opening edge, a bottom surface formed in a substantially circular shape smaller than the opening edge, the bottom surface and the opening edge, and is integrated with the bottom surface and the opening edge. And a side wall portion molded into
The side wall portion extends from the bottom surface portion and has a curved portion that is curved so as to be convex toward the inside of the container body, and an extended portion that extends from the curved portion to the opening edge portion. A bent portion is formed between at least a part of the side wall portion in the circumferential direction between the curved portion and the extending portion .
A portion of the bent portion in the circumferential direction includes a protruding portion that protrudes toward the outside of the container body from the other circumferential portion, whereby the side wall portion is at a position where the bent portion is formed. A packaging container having a polygonal shape in plan view . A plurality of the projecting portions are provided at equal intervals in the circumferential direction , whereby the side wall portion is formed in a regular polygonal shape in plan view at a position where the bent portion is formed. Item 4. A packaging container according to item 1 .   The lateral cross-sectional shape of the side wall portion is outwardly spread toward the upper side, is circular at the curved portion, is a regular polygon at the position where the bent portion is formed, and is circular at the extending portion,
  The packaging container according to claim 2, wherein the cross-sectional shape continuously changes in the vertical direction.

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