container

Abstract

To provide a container in which an opening serving as an air intake port for removing a content can be easily formed and which can improve production efficiency.SOLUTION: A container 100 has a bottom wall body 11 and a side wall body 12 that divide a storage space for storing a content, and is equipped with a container body 10 with an opening on a top surface 13 and an opening opening function part 20 for opening the opening in the bottom wall body 11. The opening opening function part 20 includes: a folding line planned part 21 consisting of a thin-walled region of a first thickness extending in a straight line through the center of the bottom wall body 11; and a breakage planned part 22a arranged in a central part of the folding line planned part 21 and consisting of a thin-walled region of a second thickness thinner than the first thickness.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a container, and particularly to a container capable of forming an air intake port for taking out contents on a bottom wall of a container body. [Background Art]

[0002] As containers for filling pudding, jelly, agar, egg tofu, sesame tofu and the like, containers capable of forming an air intake port for taking out contents on a bottom wall of a container body are known. In this type of container, generally, by pushing down a protruding piece provided on the bottom wall of the container body and breaking the protruding piece from its base, a part of the bottom wall is removed together with the base, and an air hole serving as the air intake port is opened in the bottom wall.

[0003] For example, in the container disclosed in Patent Document 1, a plate-shaped protruding piece is provided on a bottom plate (the bottom wall), and an opening can be easily formed by forming a thin-walled region around the protruding piece. Similarly, in the container disclosed in Patent Document 2, an annular thin-walled portion is provided around the base of the protruding piece in the bottom wall portion, and the thickness of the annular thin-walled portion is set to a value smaller than the thickness of the bottom wall portion so as to be easily broken, whereby compared with a container not provided with an annular thin-walled portion, breaking between the bottom wall portion and the base of the protruding piece can be easily performed. [Prior Art Documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Utility Model Publication No. 57-055181 [Patent Document 2] Japanese Unexamined Patent Publication No. 2011-051598 [Summary of the Invention] [Problem to be Solved by the Invention]

[0005] Incidentally, in the conventional container described above, a leg wall (or protective tube) was provided along the outer edge of the bottom wall to surround the protruding piece in order to prevent unintentional creation of air holes. The protruding piece was located inside the leg wall, at a predetermined distance from the inner surface of the leg wall so that even an adult's finger could be inserted into it. Furthermore, the protruding piece was made in the shape of a thin rod or plate so that even a child could easily push it over. In addition, as described above, the bottom wall was formed thinly around the base of the protruding piece. Thus, conventional containers were difficult to mold and difficult to manufacture efficiently. For example, if the molding cycle was to be sped up, there was a risk of charring occurring at the tip of the protruding piece, or the resin solidifying before the resin could be filled to the tip, resulting in short shots.

[0006] Therefore, the object of the present invention is to provide a container that allows for easy formation of an opening that serves as an air intake for removing the contents, and that can improve production efficiency. [Means for solving the problem]

[0007] To solve the above problems, the present invention provides a container comprising a container body having a bottom wall and side walls that partition a storage space for containing contents, and an opening at the top, and an opening function part for creating an opening in the bottom wall, wherein the opening function part comprises a fold line planned portion consisting of a thin-walled region of a first thickness that extends linearly through the center of the bottom wall, and a break line planned portion located in the center of the fold line planned portion and consisting of a thin-walled region of a second thickness that is thinner than the first thickness The opening function portion has a thin-walled portion for bottom displacement, which is formed to have a predetermined width on the outer edge side of the bottom wall body and to narrow toward the side of the portion to be fractured, and at least one pair of these thin-walled portions for bottom displacement are arranged opposite each other on either side of the portion to be fractured. It is characterized by the following:

[0009] Furthermore, the container according to the present invention comprises a container body having a bottom wall and side walls that partition a storage space for containing contents, and an opening at the top, and an opening function part for creating an opening in the bottom wall, wherein the opening function part comprises a fold line planned portion consisting of a thin-walled region of a first thickness that extends linearly through the center of the bottom wall, and a break line planned portion located in the central part of the fold line planned portion and consisting of a thin-walled region of a second thickness that is thinner than the first thickness The side wall has a thin-walled portion for lateral displacement which has a predetermined width in the portion connected to the outer edge of the bottom wall and is formed to narrow toward the top surface, and at least one pair of these thin-walled portions for lateral displacement are arranged opposite each other across the central axis of the container body. It is characterized by the following.

[0010] Furthermore, the container according to the present invention comprises a container body having a bottom wall and side walls that partition a storage space for containing contents, and an opening at the top, and an opening function part for creating an opening in the bottom wall, wherein the opening function part comprises a fold line planned portion consisting of a thin-walled region of a first thickness that extends linearly through the center of the bottom wall, and a break line planned portion located in the central part of the fold line planned portion and consisting of a thin-walled region of a second thickness that is thinner than the first thickness The central portion of the bottom wall is provided with a protrusion on its outer surface that projects outward, and on its inner surface that can be filled with contents. The portion to be fractured is provided at the center of the convex portion. It is characterized by the following.

[0011] In the container according to the present invention, it is preferable that a plurality of legs are provided that protrude from the bottom wall body with a length equal to or greater than the protrusion length of the protrusion. [Effects of the Invention]

[0012] The container according to the present invention has an open top surface, allowing contents such as pudding to be filled in and removed from the top surface. The bottom wall of the container body is provided with a planned fold line portion that extends linearly through its center. The planned fold line portion consists of a thin-walled region with a first thickness and is formed to be thinner than the bottom wall body. Therefore, it is easy to bend the bottom wall body along the planned fold line portion. In addition, the center of the planned fold line portion is provided with a planned fracture portion consisting of a thin-walled region with a second thickness that is thinner than the first thickness. Therefore, when attempting to bend the bottom wall body along the planned fold line portion, stress concentrates at the planned fracture portion, making it easy to create an opening in the bottom wall body. By placing the container body upside down on a plate or the like and creating an opening in the bottom wall body using the opening-creating function portion, air can be drawn into the inside of the container body through the opening, and contents such as pudding can be easily removed from the top surface onto a plate or the like.

[0013] Therefore, unlike conventional containers, there is no need to provide long protruding pieces from the bottom wall, and the bottom wall only needs to have two thin-walled regions of different thicknesses. As a result, the overall structure of the container is simpler compared to conventional containers, and the mold can also be made simpler. Consequently, charring of the tip of the protruding piece on the bottom wall and short shots do not occur as in conventional containers, so the container can be produced with a higher yield compared to conventional containers, and at the same time, the production cycle can be accelerated. Therefore, with the container according to the present invention, an air intake for removing the contents can be easily formed, and production efficiency can be improved. [Brief explanation of the drawing]

[0014] [Figure 1] This figure shows one embodiment of the container according to the present invention, and is a perspective view when the container is positioned upright with its opening facing upwards. [Figure 2] Figure 1 is a perspective view showing the container inverted, with its bottom facing upwards. [Figure 3] (a) is a top view of the container shown in Figure 1, and (b) is a diagram showing the AA cross-section of (a). [Figure 4] (a) is a bottom view of the container shown in Figure 1, and (b) is a magnified view of a part of (a). [Figure 5] Figure 1 shows a diagram illustrating the procedure for removing the contents from the container shown; (a) is a bottom view and (b) is a cross-sectional view. [Figure 6] Figure 1 shows a diagram illustrating the procedure for removing the contents from the container shown; (a) is a bottom view and (b) is a cross-sectional view. [Figure 7] This figure shows the structural analysis results of the container shown in Figure 1. [Modes for carrying out the invention]

[0015] An embodiment of the container according to the present invention will be described with reference to the drawings. Figures 1 and 2 show perspective views of the container 100 of this embodiment. Figure 1 shows the container in an upright position with the opening facing upwards, and Figure 2 shows the container in an upside-down position with the bottom facing upwards. The container 100 comprises a container body 10 and an opening function section 20 on the bottom wall 11 of the container body 10 for creating an opening 30 (see Figures 6(a) and (b)) for removing the contents 50 (shown only in Figure 6) filled in the container body 10. The container body 10 and the opening function section 20 are integrally molded and can be molded from various resins used for container packaging materials, such as polypropylene (PP) resin, polystyrene (PS) resin, or polyethylene terephthalate (PET) resin.

[0016] Hereinafter, the configuration of each part will be described in more detail. In the following description, the vertical direction represents a relative positional relationship, and refers to the direction along the central axis O of the container body 10 (see FIG. 3(b)). For example, when the container 100 is placed in the upright posture shown in FIG. 1, the side where the bottom wall body 11 is located is defined as downward, and the side where the top surface 13 is located is defined as upward. In addition, the radial direction refers to the direction orthogonal to the central axis O, and the in-plane direction refers to the horizontal direction when it is assumed that the target surface (for example, the bottom wall body 11) is a horizontal plane.

[0017] First, the container body 10 will be described with reference to FIGS. 1 to 4. As shown in FIGS. 1 and 2, the container body 10 includes the bottom wall body 11 and a side wall body 12, which define an accommodation space for accommodating the content 50. The top surface 13 of the container body 10 is open, so that the content 50 can be filled from the top surface 13, or the content 50 can be taken out. As the content 50, for example, foods such as pudding, jelly, agar, egg tofu, sesame tofu and the like, which are filled into the container body 10 in a liquid state in the manufacturing process and then solidified by heating or the like, can be suitably accommodated.

[0018] In the container 100 of the present embodiment, as shown in FIG. 2, the bottom wall body 11 has a flower shape with six petals in a plan view (when viewed from a direction orthogonal to the axial direction). As shown in FIGS. 1 and 2, the lower portion 12a of the side wall body 12 has the same flower shape as the bottom wall body 11 in a plan view, and the diameter is slightly increased toward the axially upper side. On the other hand, the upper portion 12b of the side wall body 12 is formed in a cylindrical shape. The upper end of the lower portion 12a of the side wall body 12 and the lower end of the upper portion 12b are joined by an insole wall body 15 (see FIGS. 1, 2 and 3(a)).

[0019] As shown in Figures 1 and 2, the top surface 13 is provided with a flange portion 13a that protrudes radially outward from the upper end of the upper part 12b of the side wall body 12. The container body 10 can be sealed by covering the top surface 13 of the container body 10 with a sealing material 40 (shown only in Figure 3(b)) such as an aluminum vapor-deposited film or a resin film, and by heat-pressing the sealing material 40 onto the flange portion 13a.

[0020] As shown in Figures 2, 3(b), and 4(a), a plurality of leg walls 14 (14a, 14b) are provided protruding from the lower surface of the base wall 11. The leg walls 14 extend from the side walls 12 and, as shown in Figures 2 and 3(b), are provided on the outer edge of the outer surface of the base wall 11 so as to follow the outer edge shape of the petal protrusions. As described above, the base wall 11 has a flower shape with six petals in plan view, so in this embodiment, six leg walls 14 are provided. The leg walls 14 are intermittent to each other. Of the six leg walls 14, the circumferential width of the remaining two leg walls 14 (14b) is shorter than the circumferential width of the four leg walls 14 (14a) provided adjacent to the planned folding line section 21, which will be described later. These two leg walls 14b are positioned opposite each other with the planned folding line section 21 in between. In a plan view, thin-walled sections 23 for bottom surface displacement, described later, are provided between the leg wall 14a, which has a long circumferential width, and the leg wall 14b, which has a narrow circumferential width, that is, on both sides of the leg wall 14b, which has a narrow circumferential width.

[0021] Next, the opening function section 20 will be described. Figure 4(a) is a bottom view of the container 100. Figure 4(b) is a partial enlargement view showing the circled portion in Figure 4(a). As shown in Figures 2 and 4(a), the opening function section 20 includes a planned fold line section 21 extending linearly through the center of the bottom wall body 11, a protrusion 22 provided so as to intersect the planned fold line section 21 at the center of the bottom wall body 11, and a planned break section 22a positioned at the center of the protrusion 22. In this embodiment, the opening function section 20 also includes a plurality of thin-walled sections 23 for bottom surface displacement of the same shape, each consisting of a thin-walled region having a predetermined width on the outer edge side of the bottom wall body 11 and narrowing toward the planned break section 22a side. However, the center of the bottom wall body 11 refers to the position where the outer surface of the bottom wall body 11 intersects with the central axis O of the container body 10.

[0022] Furthermore, in this invention, a thin-walled region refers to a region formed to be thinner than the thickness of other regions. The planned fold line portion 21, the planned fracture portion 22a, and the thin-walled portion 23 for bottom displacement are regions of a predetermined shape formed to be thinner than the thickness of other regions of the bottom wall body 11. When the thickness of the planned fold line portion 21 is defined as the first thickness (D1), the thickness of the planned fracture portion 22a is set to a second thickness (D2), which is thinner than the first thickness (D1). In addition, the thin-walled portion 23 for bottom displacement has a third thickness (D3), which is thicker than the first thickness (D1).

[0023] To summarize these relationships, if the thickness of other regions of the bottom wall 11 is taken as the standard thickness (D0), then the following relationships exist. Second wall thickness (D2) < First wall thickness (D1) < Third wall thickness (D3) < Standard wall thickness (D0)

[0024] Furthermore, as shown in Figures 2 and 4(a), the planned fold line portion 21 extends across the plane of the bottom wall 11, passing through its center and dividing its area in half. The planned fold line portion 21 is a recessed groove that extends from the outer surface of the bottom wall 11 toward the inner surface, and as shown in Figure 3(a), the portion of the inner surface of the bottom wall 11 where the planned fold line portion 21 is provided is formed flush with the other areas.

[0025] As shown in Figures 2 and 3(b), the protrusion 22 is located in the central part of the base wall 11, with its outer surface protruding outward from the outer surface of the base wall 11. In a plan view, the protrusion 22 has a long, approximately rectangular shape in a direction perpendicular to the extension direction of the planned folding line portion 21. Also, as shown in Figure 2, the cross-section of the protrusion 22 is formed in an approximately triangular shape. As shown in Figures 2(a) and (b), when viewed from the inner surface of the base wall 11, the inner surface of the protrusion 22 is a recess, providing a space into which the contents 50 can be filled. Furthermore, the length of the protrusion 22 from the outer surface of the base wall 11 is less than the length of the leg wall 14 from the outer surface of the base wall 11.

[0026] The planned fold line section 21 and the protrusion 22 are positioned perpendicular to each other at the center of the bottom wall body 11. The planned break section 22a is formed in the portion where the planned fold line section 21 and the protrusion 22 intersect perpendicularly, and is located in the central portion of the planned fold line section 21 and the protrusion 22.

[0027] In this embodiment, four thin-walled sections 23 for bottom displacement are provided on the outer surface of the bottom wall 11. In a plan view, the thin-walled sections 23 for bottom displacement have a substantially triangular or sector shape, with the side along the outer edge of the bottom wall 11 as the base and the vertex pointing toward the center of the bottom wall 11. In a plan view, two thin-walled sections 23 for bottom displacement are arranged on each side of the planned folding line section 21. Furthermore, the thin-walled sections 23 for bottom displacement arranged on one side of the planned folding line section 21 and the thin-walled sections 23 arranged on the other side are positioned symmetrically. In addition, one thin-walled section 23 for bottom displacement is positioned opposite another thin-walled section 23 for bottom displacement, with the planned fracture section 22a in between.

[0028] Here, when the area of ​​the planned fold line portion 21 on the outer surface of the bottom wall body 11 is defined as the first area (A1), the planned fracture portion 22a is formed to be a thin-walled region with a second area (A2) that is smaller than the first area (A1). Furthermore, the thin-walled portion 23 for bottom surface displacement is formed to be a thin-walled region with a third area (A3) that is larger than the first area (A1). These can be summarized as follows. Second area (A2) < First area (A1) < Third area (A3)

[0029] Furthermore, in this embodiment, as shown in Figures 2 and 4(a), an arrow mark 25 is formed on the bottom wall 11. The arrow mark 25 is formed between the leg wall 14b, which has a narrow width in the circumferential direction, and the protrusion 22, in the portion sandwiched by the thin-walled bottom displacement portion 23.

[0030] Furthermore, the lower part 12a of the side wall 12 is provided with a thin-walled region for lateral displacement 24, which has a predetermined width in the portion connected to the outer edge of the bottom wall 11 and is formed to narrow toward the top surface 13, in a portion corresponding to a petal-shaped recess in a plan view. The thickness of the thin-walled region for lateral displacement 24 is formed to be thinner compared to other regions of the side wall 12. In this embodiment, four thin-walled regions for lateral displacement 24 are provided on the side wall 12, and each thin-walled region for lateral displacement 24 is positioned opposite another thin-walled region for lateral displacement 24, straddling the central axis O of the container body 10. In addition, each thin-walled region for lateral displacement 24 is connected to a thin-walled region for bottom displacement 23 at the outer edge of the bottom wall 11, and thin-walled regions for lateral displacement 24 are provided on both sides of the leg wall 14b, which has a narrow width in the circumferential direction.

[0031] When removing the contents 50 from the container 100 configured as described above onto a plate or the like, the container is placed upside down on the plate or the like with the top surface 13 of the container body 10 facing the plate (not shown), as shown in Figure 5(b). Figure 5(a) is a bottom view of the container 100 at that time and is the same as Figure 4(a).

[0032] Then, as shown in Figure 5(b), grasp the side wall 12 of the container body 10 with your hand. At this time, using the arrow mark 25 formed on the bottom wall 11 as a guide, make sure that your thumb and other fingers are in contact with the portion sandwiched between the lateral displacement thin-walled portions 24 on both sides. Then, lightly grip the container body 10 and press the side wall 12 toward the central axis O, using the portion sandwiched between the lateral displacement thin-walled portions 24 as the pressing area. When the side wall 12 is pressed, both opposing side wall 12s are displaced radially inward toward the central axis O.

[0033] Then, as the side walls 12 are displaced radially inward and the two move closer together, the bottom wall 11 is bent so that its center is lifted. The bottom wall 11 has thin-walled sections 23 for bottom displacement, each of which is narrowed in width towards the section to be broken 22a. Therefore, when the side walls 12 are pressed, the center of the bottom wall 11 is more likely to lift, making it easier to bend the bottom wall 11. Furthermore, in the above container 100, a convex section 22 that is rectangular in plan view and has a triangular cross-section is provided perpendicular to the section to bend 21, so that stress is efficiently concentrated at the section to be broken 22a. As a result, when the bottom wall 11 is lightly bent, the section to be broken 22a located at its center breaks, and an opening 30 is created in the bottom wall 11 as shown in Figures 6(a) and (b).

[0034] When an opening 30 is made in the bottom wall 11, the opening 30 becomes an air intake, allowing air to be introduced between the inner surface of the container body 10 and the contents 50. Once air is introduced, the contents 50 fall onto a plate or the like due to their own weight. At that time, the contents 50 are removed onto the plate or the like while maintaining approximately the internal shape of the container body 10.

[0035] To confirm the effectiveness of the container 100 configured as described above, a structural analysis was performed on a 3D model of the container 100 when the side wall 12 was pressed as described above. The results are shown in Figure 7.

[0036] As shown in Figure 7, when the side wall 12 of the container body 10 is pressed as described above, deformation is observed in which the center of the bottom wall 11 bulges and the bottom wall 11 attempts to fold along the planned fold line 21. In other words, as this deformation progresses, it is thought that the bottom wall 11 will rupture from the planned rupture section 22a, thus forming an opening 30 in the bottom wall 11.

[0037] In the container 100 of the above embodiment described above, there is no need to provide a long protruding piece or the like from the bottom wall 11, as in conventional containers. The bottom wall 11 only needs to have two thin-walled regions with different thicknesses: a planned folding line portion 21 and a planned breaking portion 22a. Therefore, the overall structure of the container is simpler compared to conventional containers, and the mold can also be made simpler. As a result, charring of the tip portion of the protruding piece provided on the bottom wall 11 and short shots do not occur as in conventional containers. Therefore, the container 100 can be produced with a higher yield compared to conventional containers, and at the same time, the production cycle can be accelerated. Thus, with the above container 100, it is possible to easily form an opening that serves as an air intake for removing the contents 50, and production efficiency can be improved.

[0038] Furthermore, in the above container 100, by providing a thin-walled section 23 for bottom displacement, the bottom wall 11 can be bent or displaced more easily compared to a case where the bottom wall 11 does not have a thin-walled section 23 for bottom displacement. Unlike flexible containers of the type in which the contents 50 are dispensed by pressing the container body, such as a squeeze container, in a container 100 filled with pudding, it is not usually assumed that the container body 10 will be pressed to remove the contents 50. For this reason, the thickness of the bottom wall 11 and side walls 12 is relatively thick, and it may be difficult to bend the bottom wall 11. In the above container 100, while adopting a configuration substantially the same as conventional containers, by providing the above-mentioned thin-walled region, the bending position of the bottom wall 11 is restricted by the planned folding line section 21, and the bottom wall 11 is made more easily displaced by the thin-walled section 23 for bottom displacement, making it easier to create an opening 30 in the bottom wall 11. Similarly, by providing the thin-walled section 24 for lateral displacement, the bottom wall 11 can be bent by pressing the side wall 12 with light force, making it easier to open the opening 30.

[0039] Furthermore, the container 100 is provided with a protrusion 22, which allows the intended break portion 22a to be broken with less force. Here, the contents 50, such as pudding, will take on a shape corresponding to the internal shape of the container body 10. However, even when the container body 10 is used like a pudding mold, such as for pudding, the inner surface of the protrusion 22 is used as a space for filling the contents 50, preventing an increase in the thickness of the protrusion 22. By filling this space with a liquid contents 50 such as caramel sauce, it is possible to prevent the inner surface shape of the protrusion 22 from being transferred to the upper surface of the contents 50 when the contents 50 are removed onto a plate or the like.

[0040] Furthermore, when the protrusion 22 is provided on the bottom wall 11, the height of the protrusion 22 from the outer surface of the bottom wall 11 can be kept lower compared to conventional protruding pieces. Therefore, even when a leg wall 14 is provided to prevent unintentional force from being applied to the portion 22a intended to break, the height of the leg wall 14 can be reduced compared to when a protruding piece is provided, and the amount of resin required to mold the container 100 can be reduced. Moreover, in the above embodiment, the leg wall 14 is not formed as a peripheral wall continuously provided along the outer edge of the bottom wall 11 as in the conventional method, but is provided intermittently along the outer edge of the bottom wall 11, making the bottom wall 11 easier to bend and reducing the amount of resin in the gaps between the intermittent leg wall 14 (14a, 14b).

[0041] Furthermore, in the above-described container 100, an arrow mark 25 is attached to the outer surface of the bottom wall 11, allowing the user to intuitively understand the direction in which to press the container body 10. In this embodiment, no marks are attached, but the words "PUSH" or "Push" may be attached to the pressing position on the side wall 12.

[0042] Although the container 100 according to an embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and can be modified as appropriate without departing from the spirit of the present invention. For example, in the above container 100, a thin-walled portion 23 for bottom displacement and a thin-walled portion 24 for side displacement are provided so that when the bottom wall 11 bends along the planned folding line portion 21, the center of the bottom wall 11 bulges, and stress is efficiently concentrated at the planned fracture portion 22a. However, the thin-walled portion 23 for bottom displacement and the thin-walled portion 24 for side displacement are not essential components in the present invention.

[0043] These thin-walled regions do not need to be provided, as long as the bottom wall 11 can be bent along the planned fold line 21 by pressing the side wall 12, and stress can be concentrated at the planned fracture portion 22a. Furthermore, the shapes of the thin-walled portion 23 for bottom displacement and the thin-walled portion 24 for side displacement are not particularly limited and can be changed as appropriate. However, regarding the thin-walled portion 23 for bottom displacement, even if it has a different shape from the illustrated example, it is preferable to have a thin-walled region formed so that it narrows from the outer edge of the bottom wall 11 towards the planned fracture portion 22a located at the center of the bottom wall 11. This allows the central part of the bottom wall 11 to bulge when the bottom wall 11 is bent, and thus stress can be efficiently concentrated at the planned fracture portion 22a located at the center of the bottom wall 11. Even if the thin-walled portion 24 for lateral displacement has a different shape from the illustrated example, it is preferable to provide it on the side wall body 12 in connection with the thin-walled portion 23 for bottom displacement. This makes it easier to deform the side wall body 12 when it is pressed, and also makes it easier to deform the bottom wall body 11 in conjunction with the deformation of the side wall body 12.

[0044] The protrusion 22 is not an essential component of the present invention. While the above-mentioned effects can be obtained by providing the protrusion 22, the protrusion 22 is not necessary if the planned fracture portion 22a is located in the central part of the planned fold line portion 21. Furthermore, the shape of the protrusion 22 is not particularly limited. However, a protrusion 22 that is elongated in a direction perpendicular to the extending direction of the planned fold line portion 21 is more preferable because it can efficiently concentrate stress on the planned fracture portion 22a.

[0045] Furthermore, in the above embodiment, each thin-walled region satisfies the following relationship. Second wall thickness (D2) < First wall thickness (D1) < Third wall thickness (D3) < Standard wall thickness (D0) Second area (A2) < First area (A1) < Third area (A3) However, the thickness and area of ​​each thin-walled region do not necessarily have to satisfy the above relationship, depending on the shape of the thin-walled region and the location where it is provided. The first thickness (D1) and the third thickness (D3) may be the same, or the third thickness (D3) may be thinner than the first thickness (D1). The same applies to the area. However, by making the area to be broken 22a the region with the smallest area and the thinnest thickness among the multiple types of thin-walled regions, the area to be broken 22a can be easily broken with light force when the bottom wall 11 is deformed, such as by bending.

[0046] Furthermore, in the above-described container 100, the bottom wall 11 is flower-shaped, the top surface 13 is circular, and the lower part 12a and upper part 12b of the side wall 12 are formed in different shapes, but the shape of the container body 10 is not limited to this. Since the container body 10 also has functions such as a pudding mold and a jelly mold, the shape of the container body 10 can be appropriately changed according to the shape from which the contents 50 should be removed. For example, the bottom wall 11 and the top surface 13 may be similar in shape, such as a frustoconical shape or a frustoconical shape, or a polygonal frustoconical shape, or the shapes of the bottom wall 11 and the top surface 13 may be similar. However, in order to remove the contents 50 well, it is preferable that the opening area of ​​the top surface 13 is larger than the area of ​​the bottom wall 11.

[0047] Furthermore, although the above embodiment describes a usage method in which the opening 30 is used as an air intake, the container 100 according to the present invention is not limited to foods that are filled in liquid form into the container body 10 during the manufacturing process of puddings, etc., and then solidified by heating, etc. It may contain various liquids such as beverages and seasonings, as well as fluids such as pastes and creams. For example, the top surface 13 of the container body 10 may be sealed with the sealing material 40 or other members, and then the opening 30 may be opened and a straw or the like may be inserted through the opening 30. [Explanation of Symbols]

[0048] 10: Container body 11: Bottom wall 12: Side wall 12a: Lower part 12b: Top 13: Top surface 13a: Flange section 14: Leg wall 14a: Leg wall 14b: Leg wall 15: Middle bottom wall 20: Opening function section 21: Planned folding line section 22: Convex part 22a: Area where fracture is expected 23: Thin-walled section for bottom displacement 24: Thin-walled section for lateral displacement 25: Arrow mark 30: Opening (air intake) 40: Sealant 100: Container O: Central axis

Claims

1. A container comprising a container body having a bottom wall and side walls that partition a storage space for containing contents, and having an open top surface, and an opening opening function part for creating an opening in the bottom wall, The aforementioned opening function unit is, A planned fold line portion consisting of a first thin-walled region of thickness that extends linearly through the center of the bottom wall body, The fractured portion is located in the central part of the planned fold line portion and comprises a thin-walled region having a second thickness that is thinner than the first thickness, The opening function portion has a bottom displacement thin-walled portion which is formed to have a predetermined width on the outer edge side of the bottom wall body and to narrow toward the side of the portion to be broken, and at least one pair of the bottom displacement thin-walled portions are arranged opposite each other with the portion to be broken in between.

2. A container comprising a container body having a bottom wall and side walls that partition a storage space for containing contents, and having an open top surface, and an opening opening function part for creating an opening in the bottom wall, The aforementioned opening function unit is, A planned fold line portion consisting of a first thin-walled region of thickness that extends linearly through the center of the bottom wall body, The fractured portion is located in the central part of the planned fold line portion and comprises a thin-walled region having a second thickness that is thinner than the first thickness, A container wherein the side wall has a thin-walled portion for lateral displacement which has a predetermined width in the portion connected to the outer edge of the bottom wall and is formed to narrow toward the top surface, and at least one pair of these thin-walled portions for lateral displacement are arranged opposite each other across the central axis of the container body.

3. A container comprising a container body having a bottom wall and side walls that partition a storage space for containing contents, and having an open top surface, and an opening opening function part for creating an opening in the bottom wall, The aforementioned opening function unit is, A planned fold line portion consisting of a first thin-walled region of thickness that extends linearly through the center of the bottom wall body, The fractured portion is located in the central part of the planned fold line portion and comprises a thin-walled region having a second thickness that is thinner than the first thickness, The central portion of the bottom wall is provided with a protrusion on its outer surface that projects outward, and on its inner surface that can be filled with contents. A container in which the portion to be broken is provided at the center of the protrusion.

4. The container according to claim 3, wherein a plurality of legs are provided that protrude from the bottom wall body with a length equal to or greater than the protrusion length of the protrusion.

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