JP6245771B1 - Packaging container - Google Patents

Abstract

[Problem] To provide a packaging container that has sufficient strength and can convey the freshness and deliciousness of the contents as they are without deteriorating the visibility of the contents. A transparent packaging container having a bottom surface portion 10 and a side wall portion extending upward from a peripheral edge of the bottom surface portion 10 and having a plurality of corner portions 21 and having a polygonal shape in a sectional view in a horizontal direction. In addition, the corner portion 21 has a curved surface shape portion 21b that is a curved shape with a horizontal cross-sectional shape curved outward, and a plane that is positioned below the curved surface shape portion 21b and has a horizontal cross-sectional shape that is a straight line. A shape portion 21a is provided, and the horizontal sectional shape continuously changes from the curved shape portion 21b to the planar shape portion 21a without a step. [Selection] Figure 1

Description

  The present invention relates to a packaging container that is suitable for containing foods such as cut fruits and has improved visibility as a transparent container as a whole.

  In recent years, foodstuffs are put in hygienic synthetic resin sheet packaging containers and transported and displayed at convenience stores, supermarkets, and the like, and containers for that purpose are also manufactured in a wide variety.

  As such containers, Patent Documents 1 and 2 listed below disclose containers in which longitudinal ribs are provided at the corners of the container from the opening to the lower end of the corners, and the longitudinal ribs provide sufficient rigidity. It is said that the container can be prepared for. Further, it is disclosed that a bent portion can be formed at the lower portion of the corner portion, and a vertically long rib can be formed so as to pass through the apex of the bent portion and reach into the bent portion. Has been.

  However, as shown in Patent Documents 1 and 2 below, when a vertically long rib is provided at the corner portion for reinforcement from the opening to the lower end portion, the visibility of the stored food such as cut fruit is significantly reduced at the corner portion. Become.

JP 2016-147711 A Japanese Unexamined Patent Publication No. 2016-147692

  Accordingly, the present inventors have a conflict that the required strength of the container is sufficiently provided, and that the freshness and deliciousness of the contained item can be transmitted as it is without reducing the visibility of the contained item. As a result of earnest research to satisfy the requirements, the container of the present invention has been completed.

That is, the packaging container according to the present invention, and a side wall portion extending upwardly from the peripheral edge of the bottom and bottom surface portion of the polygonal shape, the shape of the side wall portion, when viewed from a horizontal cross-section, the upper surface from the lower end A transparent packaging container that is a polygonal shape having wall surface portions corresponding to the number of sides of the bottom surface portion over the entire length up to the opening portion , and each corner portion of the side wall portion has a horizontal cross-sectional shape. Is provided with a curved surface shape portion that is curved outward and a planar shape portion that is located below the curved shape portion and has a horizontal cross-sectional shape that is linear, from the curved shape portion to the planar shape portion. The horizontal cross-sectional shape continuously changes without a step.

  In the packaging container having the above configuration, the curved portion and the planar portion are provided in the corner portion, and the horizontal sectional shape continuously changes from the curved portion to the planar portion without a step. Therefore, sufficient strength can be secured without providing ribs on the plurality of wall surfaces and the bottom surface portion constituting the side wall portion. Therefore, the visibility of the container can be improved extremely and the visibility at the corner can be prevented from being lowered. In particular, it is also suitable for the upside-down display method used with the bottom side up, and by using the container upside down in this way, it can contain cut fruits, salads, etc. Visibility can be improved, and as a result, the freshness and deliciousness of the contents can be conveyed.

  In particular, the side wall portion is provided with a gently inclined portion having a relatively small inclination angle with respect to the bottom surface portion and a bent portion on the upper side of the gently inclined portion, and the inclination angle with respect to the bottom surface portion is relatively large and gently inclined. It is preferable that a steeply inclined portion having a larger vertical dimension than the portion is provided, and a curved surface shape portion and a planar shape portion are formed at a corner portion of the steeply inclined portion. Thus, the strength of the side wall portion can be improved by forming the gently inclined portion at the lower portion of the side wall portion. Further, the strength of the side wall portion can be improved by forming a bent portion between the gently inclined portion and the steeply inclined portion. The steeply inclined portion has a large vertical dimension, but since the curved portion and the planar portion are formed in the steeply inclined portion, the strength of the steeply inclined portion having a large vertical direction can be sufficiently secured. Furthermore, the visibility in a steeply inclined portion having a large vertical dimension can also be improved.

The packaging container according to the present invention includes a transparent container main body and a transparent lid fitted to the container main body, and the container main body extends upward from the polygonal bottom surface and the periphery of the bottom surface. A side wall portion, and the shape of the side wall portion is a polygonal shape having a number of wall surface portions corresponding to the number of sides of the bottom surface portion over the entire length from the lower end to the upper surface opening as viewed from the horizontal cross section. A horizontal curved section having a curved cross-sectional shape in which the horizontal cross-sectional shape is curved outward, and a horizontal cross-section located on the lower side of the curved-shaped portion at each corner of the side wall And a planar shape portion having a linear shape, and the horizontal cross-sectional shape continuously changes without a step portion from the curved surface shape portion to the planar shape portion.

  As described above, a curved surface portion and a planar shape portion are provided in the corner portion, and the horizontal cross-sectional shape continuously changes without a step from the curved surface shape portion to the planar shape portion. It can be ensured, and the visibility of the contents is not lowered, and the freshness and deliciousness of the contents can be transmitted as they are. In particular, it is suitable for a display method upside down with the bottom face up.

The perspective view which shows the container main body of the container for packaging in one Embodiment of this invention. The perspective view which shows the cover of the packaging container. The front view of the container main body of the container for packaging. The AA end elevation of FIG. The BB end elevation of FIG. (A) is a CC end view of FIG. 1, (b) is a DD end view of FIG. The perspective view which shows the closed state of the packaging container, and the state upside down. (A)-(d) is a schematic diagram which shows the aspect of protrusion of the lid | cover of the packaging container. The perspective view which shows the container main body of the container for packaging in other embodiment of this invention. The front view of the container main body of the container for packaging. EE end view of FIG. FF end view of FIG. 9A is a GG end view of FIG. 9, FIG. 9B is a hh end view of FIG. 9, and FIG. 9C is an II end view of FIG.

  Hereinafter, a packaging container according to an embodiment of the present invention will be described with reference to FIGS. The packaging container in the present embodiment is suitable for accommodating various foods (food ingredients), and the type of food is not particularly limited. In particular, freshness such as salads and cut fruits has a great influence on the willingness to purchase. Suitable for giving food.

  As shown in FIGS. 1 and 2, the packaging container according to this embodiment includes a container body 1 having an upper surface opening, and a lid 2 that is detachably attached to the container body 1 so as to close the upper surface opening of the container body 1. The container body 1 and the lid 2 are both transparent so that the contents can be viewed from the outside of the container. The container body 1 and the lid 2 are both formed by thermoforming a transparent synthetic resin sheet. It is preferable that the container body 1 and the lid 2 have a configuration in which the container body 1 and the lid 2 are fitted to each other. In this embodiment, an inner fitting structure in which the lid 2 is fitted inside the container body 1 is employed. An outer fitting structure in which the lid 2 is fitted to the outside may be used.

<Container body 1>
The container main body 1 includes a bottom surface portion 10, a side wall portion extending upward from the periphery of the bottom surface portion 10, and a flange portion extending outward from the upper end of the side wall portion. The planar view shape of the container body 1 is a polygonal shape. It may be rounded. The planar view shape of the bottom surface portion 10 is a polygonal shape, the horizontal sectional shape obtained by cutting the side wall portion in the horizontal direction is also a polygonal shape, and the opening shape of the top surface opening is also a polygonal shape. The plan view shape of the inner edge of the flange portion is an opening shape of the upper surface opening portion and is a polygonal shape, but the plan view shape of the outer edge of the flange portion may be a polygonal shape or not a polygonal shape. Good. In the present embodiment, the entire surface from the bottom surface portion 10 to the flange portion is a polygonal shape in plan view, particularly a rectangle, and further a square shape.

<Bottom part 10>
The bottom surface portion 10 has a square shape in plan view, and its outer edge is composed of four sides. The bottom surface portion 10 is not formed with an uneven shape such as a rib, and the bottom surface portion 10 is formed of a horizontal flat surface.

<Sidewall>
The side wall portion has a rectangular tube shape as a whole, and is composed of a number of wall surface portions 20 corresponding to the number of sides of the bottom surface portion 10. In this embodiment, since the bottom face part 10 has four sides, the side wall part is composed of four wall face parts 20 correspondingly. Each wall surface portion 20 extends upward from each side of the bottom surface portion 10. The four wall surface portions 20 are adjacent to each other in the circumferential direction, and a corner portion 21 extending in the vertical direction is formed between the adjacent wall surface portions 20.

  Moreover, when each part of the side wall portion is viewed in the vertical direction, the side wall portion is a rectangular tubular side wall main portion 30 that extends while expanding upward from the periphery of the bottom surface portion 10 as shown in FIGS. 1, 3, and 4. And an inner fitting portion 32 having a rectangular tube shape that extends to the upper side of the side wall main portion 30 via a stepped portion 31 that extends one step outward and gradually toward the inside upward. The side wall main portion 30 is a portion that occupies most of the region from the lower end of the side wall portion to the position near the upper end of the entire side wall portion, and the inner fitting portion 32 constitutes the uppermost portion of the side wall main portion 30. It is a part to do. A curved surface portion 33 that is curved outward along the vertical direction is formed at the boundary portion between the bottom surface portion 10 and the side wall main portion 30.

<Side wall main part 30>
In the present embodiment, the side wall main portion 30 can be further divided into two upper and lower regions. That is, the side wall main portion 30 is composed of a rectangular tube-shaped gentle inclined portion 30 a that forms the lower portion of the side wall main portion 30 and a square tube-shaped steeply inclined portion 30 b that forms the upper portion of the side wall main portion 30. Therefore, the gently inclined portion 30a constitutes the lowermost portion of the side wall portion. The vertical dimension of the steeply inclined part 30 b is larger than the vertical dimension of the gently inclined part 30 a, and thus the steeply inclined part 30 b is the main part of the side wall main part 30. The gently inclined portion 30a extends from the periphery of the bottom surface portion 10 while expanding upward at a predetermined inclination angle, and the steeply inclined portion 30b has a predetermined inclination angle upward from the upper end of the gently inclined portion 30a. It extends to the inner edge of the step portion 31 while expanding. The inclination angle of the gentle inclination portion 30a and the inclination angle of the steep inclination portion 30b are both inclination angles with respect to the bottom surface portion 10 which is a horizontal plane, that is, the rising angle, and the inclination angle of the steep inclination portion 30b is that of the gentle inclination portion 30a. Greater than tilt angle. Note that the inclination angle of the gently inclined portion 30a may be 45 degrees or more. As described above, since the inclination angle of the gentle inclination portion 30a and the inclination angle of the steep inclination portion 30b are different from each other, a bent portion 30c bent in the vertical direction is formed at the boundary portion between the gentle inclination portion 30a and the steep inclination portion 30b. Is formed. The bent portion 30c extends in the horizontal direction over the entire circumference of the side wall portion.

  It is necessary not to form uneven shapes such as ribs on the four wall surface portions 20 excluding the corner portion 21 of the side wall main portion 30. Each of the four wall surface portions 20 includes a lower inclined surface 20a that constitutes the gently inclined portion 30a and an upper inclined surface 20b that constitutes the steeply inclined portion 30b. The lower inclined surface 20a and the upper inclined surface 20b are vertically adjacent to each other via the bent portion 30c. Therefore, the side wall main portion 30 includes a total of four lower inclined surfaces 20a and four upper inclined surfaces 20b. Each of the lower inclined surface 20a and the upper inclined surface 20b is composed of a flat surface having no uneven shape such as a rib. However, the lower inclined surface 20a and the upper inclined surface 20b may be curved in a convex shape or a concave shape curved in the vertical direction or the horizontal direction toward the outer side or the inner side of the container.

<Corner 21>
The side wall main portion 30 has four corner portions 21. All four corner portions 21 have the same configuration. As shown in FIG. 6, the corner portion 21 has a curved surface portion 21b in which a horizontal cross-sectional shape (a cross-sectional shape when cut in the horizontal direction) is curved outwardly in a circular arc shape, and a horizontal cross-sectional shape is a straight line. And a planar shape portion 21a. The curved surface shape portion 21b connects the wall surface portions 20 adjacent in the horizontal direction with curved surfaces, and the central angle thereof is approximately 90 degrees in the present embodiment. The planar shape portion 21a connects the wall surface portions 20 adjacent in the horizontal direction with a plane, and therefore the left and right wall surface portions 20 and the planar shape portion 21a are in a bent relationship, and the wall surface portion 20 and the planar shape portion In this embodiment, the bending angle with respect to 21a is approximately 45 degrees.

  The curved surface portion 21b is located on the upper side, and the planar shape portion 21a is located on the lower side of the curved surface shape portion 21b. And the horizontal direction cross-sectional shape in the corner part 21 changes smoothly and continuously in the state without a level | step difference from the curved surface shape part 21b to the planar shape part 21a. That is, a shape changing portion 21c in which the horizontal cross-sectional shape continuously changes in the vertical direction exists between the curved shape portion 21b and the planar shape portion 21a. FIG. 5 shows a cross-sectional shape obtained by cutting the corner portion 21 in the vertical direction at the center portion in the horizontal direction. However, there is no step from the curved surface shape portion 21b located on the upper side to the planar shape portion 21a located on the lower side. It has a smooth and continuous shape. The degree of the outward bulge of the curved surface portion 21b gradually decreases toward the lower side, and finally the planar shape portion 21a is in a state where there is no bulge.

  The curved surface portion 21b, the shape changing portion 21c, and the planar shape portion 21a are formed in the steeply inclined portion 30b of the corner portion 21. Specifically, the curved surface shape portion 21b is located at the uppermost portion of the steeply inclined portion 30b and extends downward from the upper end of the steeply inclined portion 30b by a predetermined length. The planar shape portion 21a is located at the lowermost portion of the steeply inclined portion 30b and extends upward by a predetermined length from the lower end of the steeply inclined portion 30b. And the shape change part 21c is located in the middle part of the up-down direction of the steeply inclined part 30b. In addition, the gentle inclination part 30a of the corner part 21 has the planar shape part 21a as a whole.

<Inner fitting part 32>
An inner fitting part 32 is formed above the side wall main part 30 via a step part 31. The step portion 31 connects the upper end of the side wall main portion 30 and the lower end of the inner fitting portion 32, and is substantially horizontal from the upper end of the side wall main portion 30 to the lower end of the inner fitting portion 32. It extends. The inner fitting portion 32 is inclined so as to gradually become inward from the outer edge of the step portion 31 toward the upper side. That is, the inner fitting part 32 is formed in the reverse taper shape which becomes an inner side, so that it may be on the upper side.

<Flange part>
A flange portion is formed from the upper end of the inner fitting portion 32 toward the outside. The flange portion is formed over the entire circumference. The width which is a dimension in the horizontal direction of the flange portion may be changed along the circumferential direction, or may be a constant width.

  The flange portion includes a horizontal portion 12a extending substantially horizontally from the upper end of the inner fitting portion 32 to the outside, and a skirt portion 12b extending vertically or inclined downward from the outer edge of the horizontal portion 12a. Can do. Moreover, you may extend the outer peripheral edge part 12c toward the outer side from the lower end of the skirt part 12b. The outer peripheral edge portion 12c may be provided substantially horizontally or slightly inclined downward. The outer peripheral edge portion 12c may be formed with a large number of fine irregularities and reinforced, and the finger or the like may not be cut even if it hits the finger or the like. This unevenness may be formed only on the outer edge side of the outer peripheral edge portion 12c, or may be formed over the entire width from the outer edge to the inner edge of the outer peripheral edge portion 12c, or from the outer edge of the outer peripheral edge portion 12c to the skirt portion 12b. You may form so that it may continue over. When the unevenness is a wave shape when viewed from the front, the direction of many peaks and valleys is along the inner and outer directions of the container body 1 and the flange portion has a corner portion. It is formed in parallel to the direction (radiation direction) connecting the center part and the center part. Further, for example, the irregularities are formed by knurled eyes such as flat knurled eyes and twill knurled eyes, and are preferably formed by twill knurled eyes so as not to slip.

<Lid 2>
The perspective view which looked at the lid | cover 2 from the plane side is shown in FIG. The lid | cover 2 should just be what can block | close the upper surface opening part of the container main body 1, The shape and structure are not ask | required. In this embodiment, since the upper surface opening of the container body 1 has a square shape in plan view, the lid 2 has a square shape in plan view, and the lid 2 is fitted inside the container body 1. An internal fitting structure is adopted. That is, the lid 2 includes an inner fitting portion 50 that fits into the inner fitting portion 32 of the container body 1, and a flange portion 51 extends from the upper end of the inner fitting portion 50 to the outside. . The flange part 51 has a substantially horizontal part 51a. The horizontal portion 51 a extends from the upper end of the inner fitting portion 50 toward the outside. In the closed state, the horizontal portion 51a of the flange portion 51 of the lid 2 overlaps with the horizontal portion 12a of the flange portion of the container main body 1 so as to be in contact with each other or face each other through a slight gap. The flange portion 51 may be provided with an outer peripheral edge portion 51 b similar to that of the container body 1. The outer peripheral edge 51b of the lid 2 may be formed with a number of irregularities similar to the outer peripheral edge 12c of the container body 1. In addition, it is preferable to form a knob 51c at the corner of the outer peripheral edge 51b of the lid 2.

  On the other hand, the lid 2 includes a top surface portion 52 inside the inner fitting portion 50 and the flange portion 51. The top surface portion 52 is lower in height than the horizontal portion 51 a of the flange portion 51. As shown in FIG. 7, when the packaging container in the closed state is displayed upside down, the horizontal portion 51a of the flange portion 51 of the lid 2 becomes the installation surface. At that time, the top surface portion 52 of the lid 2 is positioned higher than the installation surface. Furthermore, the height of the top surface portion 52 may be the same as the lower end of the inner fitting portion 50 but lower than that.

  Position offset prevention for suppressing relative positional deviation in the horizontal direction between the upper and lower packaging containers when the packaging containers in the closed state are stacked up and down at predetermined positions on the peripheral edge of the top surface portion 52 It is preferable that the projection 53 for the projection protrudes upward. The shape and arrangement of the protrusions 53 may be various. A representative example of the shape and arrangement of the protrusion 53 is shown in FIG. As shown in FIG. 8A, the protrusions 53 may be formed at the center of each side of the top surface portion 52. In that case, the protrusion 53 may have a long shape along each side. The lid 2 shown in FIG. 2 is a mode in which a protrusion 53 is formed at the center of each side of the top surface portion 52. Further, the protrusion 53 may be provided at the corner of the top surface 52 instead of the central portion of the side of the top surface 52. When the protrusions 53 are provided at the corners of the top surface portion 52, it is preferable to provide the protrusions 53 in two vertical and horizontal directions (two directions, the front-rear direction and the left-right direction). For example, as shown in FIG. 8B, a protrusion 53 that bends in an L shape may be provided at the corner of the top surface portion 52. Further, instead of a shape that is continuous in two vertical and horizontal directions, a C-shaped protrusion 53 in which the vertical and horizontal directions are separated from each other may be provided at the corner of the top surface portion 52 as shown in FIG. Note that the protrusions 53 may be provided at all four corners, or may not be provided at all corners. For example, the protrusions 53 may be provided only at a pair of corners located on a diagonal line. . Further, as shown in FIG. 8D, a protrusion 53 that is continuous over the entire periphery of the peripheral portion of the top surface portion 52 may be provided. In any case, it is preferable to form a protrusion 53 on the peripheral portion of the top surface portion 52 so as to prevent the positional shift between the containers in the vertical and horizontal directions. When the packaging containers in the closed state are stacked up and down, the bottom surface of the container body 1 of the packaging container stacked on the upper side of the protrusion 53 of the top surface portion 52 of the lid 2 in the lower packaging container. By the engagement of the portion 10, the horizontal displacement between the packaging containers is prevented. In addition, when the packaging container in the closed state is turned upside down and the packaging containers in the upside down direction are stacked one above the other, the bottom surface portion 10 of the lower packaging container is placed in the upper packaging container. It engages with the inside of the protrusion 53 of the top surface portion 52 of the lid 2.

  When the container main bodies 1 or the lids 2 are stacked on the upper end of the side wall main part 30 of the container main body 1 or the lower end of the side wall part of the lid 2, the container main bodies 1 or the lids 2 are mutually connected. An anti-blocking protrusion (not shown) may be provided so as not to get stuck and block. For example, in the case of the lid 2, the anti-blocking protrusions are formed so that when the plurality of lids 2 are overlapped (stacked) in the process after the lid 2 is thermoformed, the plurality of lids 2 are in close contact with each other. This prevents it from becoming difficult to leave. This anti-blocking protrusion makes it easy to separate the stacked lids 2 into individual lids 2. A plurality of anti-blocking protrusions are provided at different positions for each of the plurality of lids 2 formed simultaneously from the synthetic resin sheet. Therefore, since it can prevent that the anti-blocking protrusion in the some lid | cover 2 shape | molded simultaneously and overlapped after that does not exist in the same position, it can prevent effectively that lid | cover 2 adheres. The same applies to the case of the container body 1.

  The container body 1 and the lid 2 are formed by so-called sheet molding. Sheet molding includes, for example, vacuum forming, pressure forming, vacuum pressure forming, double-sided vacuum forming, hot plate forming and the like, and in any case, it is formed by thermoforming a synthetic resin sheet. As the synthetic resin sheet, for example, a sheet made of polyethylene terephthalate, a polyolefin such as polystyrene, polypropylene, or polyethylene, a sheet filled with an inorganic material as these sheet materials, a stretched sheet obtained by uniaxially or biaxially stretching these sheets, or the like can be used. . In particular, among these sheets, a sheet excellent in transparency is preferable, and the contained food can be favorably visually recognized. In general, it is preferable to use a resin sheet having a thickness of about 0.2 to 1 mm for the container body 1 for containing food or the like.

  In the packaging container formed as described above, food such as cut fruit is accommodated in the container body 1, and the inner fitting portion 50 of the lid 2 is fitted inside the inner fitting portion 32 of the container body 1. Combine with each other to close the lid. In particular, since the lid 2 is structured to be fitted into the container body 1, even when food containing moisture is contained, the moisture in the contained item is difficult to leak out of the packaging container. Moreover, since both the container main body 1 and the lid | cover 2 are transparent and the whole packaging container is transparent, it is excellent in the visibility of a stored item, and a stored item can be visually recognized from all angles. The bottom surface 10 of the container body 1 and the upper inclined surface 20b and the lower inclined surface 20a of the side wall main portion 30 are not formed with uneven shapes such as ribs, and the bottom surface portion 10 and the side wall main portion 30 of the container body 1 are not formed. Since the upper inclined surface 20b and the lower inclined surface 20a are smooth surfaces, the freshness and deliciousness of the contents can be strongly conveyed to the purchaser. In particular, as shown in FIG. 7, the container body 1 is suitable for displaying in the upside down direction with the bottom surface portion 10 facing upward, and the bottom surface portion 10 and the side wall main portion 30 of the container body 1 having excellent visibility. The contents can be seen clearly or clearly through.

  Further, a curved surface portion 21b and a planar shape portion 21a are formed at the corner portion 21 of the side wall main portion 30, and the horizontal sectional shape changes smoothly and continuously from the curved surface shape portion 21b to the planar shape portion 21a. Therefore, sufficient strength can be secured without providing ribs on the four wall surface portions 20 and the bottom surface portion 10, and visibility can be improved as compared with a configuration in which ribs or the like are provided. Since the reinforcing ribs in the vertical direction are not formed at the corner portion 21, the visibility is not lowered at the corner portion 21, and the horizontal cross-sectional shape smoothly continues from the curved surface shape portion 21b to the planar shape portion 21a. Therefore, the strength can be sufficiently secured and the conflicting problems of strength and visibility can be solved simultaneously. In particular, since the vertical reinforcing rib is not formed on the upper portion of the side wall main portion 30 in the corner portion 21, it is possible to prevent the visibility from being lowered.

  Further, since the steeply inclined portion 30b has a larger vertical dimension than the gently inclined portion 30a, the curved portion 21b and the planar portion 21a are formed at the corner portion 21, thereby making the side wall main portion 30 visible. Is prevented, and the strength can be easily secured. Further, since the gently inclined portion 30a is formed below the steeply inclined portion 30b via the bent portion 30c, the strength of the side wall main portion 30 is easily ensured without providing a rib or the like. Further, a planar shape portion 21a is also formed on the gentle slope portion 30a, and at the corner portion 21, the planar shape portion 21a of the steep slope portion 30b and the planar shape portion 21a of the gentle slope portion 30a are vertically moved via the bent portion 30c. Therefore, even if the bent portion 30c is formed, the visibility can be prevented from being lowered, and the effect is exhibited particularly in the display form upside down.

  In addition, although the packaging container shown in FIGS. 1-7 was a shallow container, a deeper container may be sufficient as it. For example, FIG. 9 to FIG. 13 show an example of the container main body 1 whose vertical dimension is larger than that of the packaging container of the above embodiment. The lid 2 can share the one shown in FIG.

  In the container body 1 shown in FIGS. 9 to 13, longitudinal reinforcing ribs 22 are formed in the lower part of the corner portion 21. In this manner, the reinforcing rib 22 may be formed in the lower portion of the corner portion 21, but it is necessary to keep the length as short as possible because it reduces visibility. Therefore, even when the reinforcing rib 22 is formed at the corner portion 21, it is not formed over the entire height of the side wall main portion 30 of the corner portion 21, but the reinforcing rib is not formed at the upper portion, but only at the lower portion. Reinforcing ribs 22 are formed.

  The container main body 1 shown in FIGS. 9 to 13 is different from the one shown in FIG. 1 mainly in the vertical direction of the steeply inclined portion 30b and is longer than that shown in FIG. As described above, the curved portion 21b, the shape changing portion 21c, and the planar portion 21a are formed in the steeply inclined portion 30b of the corner portion 21. The reinforcing rib 22 is mainly formed on the gently inclined portion 30 a in the corner portion 21, and the reinforcing rib 22 is formed over the entire length of the gently inclined portion 30 a in the corner portion 21 in the vertical direction. The reinforcing rib 22 has a concave groove shape extending in the vertical direction as shown in FIG. 13C, and more specifically has a V shape in a horizontal sectional view. By forming the reinforcing rib 22, the horizontal cross-sectional shape of the gently inclined portion 30 a in the corner portion 21 is a shape in which a pair of left and right arcs are arranged side by side.

  The lower portion 22a of the reinforcing rib 22 reaches the peripheral edge portion of the bottom surface portion 10 beyond the curved surface portion 33 formed at the boundary portion between the bottom surface portion 10 and the side wall portion. However, the lower part 22a of the reinforcing rib 22 is gradually formed narrower and gradually becomes shallower as it goes from the curved surface part 33 to the bottom surface part 10. The upper portion 22b of the reinforcing rib 22 extends upward to the lower portion of the steeply inclined portion 30b beyond the bent portion 30c. However, the lower portion 22a of the reinforcing rib 22 is formed so as to become narrower as it goes upward from the bent portion 30c, and its depth gradually becomes shallower. In this manner, the reinforcing rib 22 is formed at the lower portion of the corner portion 21 of the side wall main portion 30, and the curved shape portion 21b, the shape changing portion 21c, and the planar shape portion 21a are formed at the lower portion of the corner portion 21 of the side wall main portion 30. It may be formed.

DESCRIPTION OF SYMBOLS 1 Container body 2 Lid 10 Bottom part 12a Horizontal part (flange part)
12b Skirt portion 12c Outer peripheral edge portion 20 Wall surface portion 20a Lower inclined surface 20b Upper inclined surface 21 Corner portion 21a Planar shape portion 21b Curved shape portion 21c Shape change portion 22 Reinforcement rib 22a Lower portion 22b Upper portion 30 Side wall main portion (side wall portion)
30a Slowly inclined portion 30b Steeply inclined portion 30c Bent portion 31 Stepped portion 32 Inner fitting portion 33 Curved surface portion 50 Inner fitting portion 51 Flange portion 51a Horizontal portion 51b Outer peripheral edge portion 51c Knob portion 52 Top surface portion 53 Projection

Claims (3)

And a side wall portion extending upwardly from the peripheral edge of the bottom and bottom surface portion of the polygonal shape, the shape of the side wall portion, when viewed from a horizontal cross-section, over the entire length from the lower end to the upper opening, a bottom portion A transparent packaging container having a polygonal shape with a number of wall surfaces corresponding to the number of sides of
At each corner portion of the side wall portion , a curved surface shape portion having a curved shape in which the horizontal cross-sectional shape is curved outward, and a planar shape portion located below the curved shape portion and having a horizontal cross-sectional shape being linear And
A packaging container, wherein a horizontal cross-sectional shape continuously changes without a step from a curved surface shape portion to a planar shape portion.   The side wall portion is provided with a gently inclined portion having a relatively small inclination angle with respect to the bottom surface portion and a bent portion on the upper side of the gently inclined portion, and has a relatively large inclination angle with respect to the bottom surface portion and more than the gently inclined portion. The packaging container according to claim 1, further comprising a steeply inclined portion having a large vertical dimension, wherein a curved portion and a planar portion are formed at a corner portion of the steeply inclined portion. And a transparent lid fitted in a transparent container body and the container body, the container body is provided with a side wall portion extending upwardly from the peripheral edge of the bottom and bottom surface portion of the polygonal shape, the shape of the side wall portion Is a packaging container that is a polygonal shape having a number of wall surface portions corresponding to the number of sides of the bottom surface portion over the entire length from the lower end to the upper surface opening, as seen from the horizontal cross section ,
At each corner portion of the side wall portion , a curved surface shape portion having a curved shape in which the horizontal cross-sectional shape is curved outward, and a planar shape portion located below the curved shape portion and having a horizontal cross-sectional shape being linear And
A packaging container, wherein a horizontal sectional shape continuously changes from a curved surface shape portion to a planar shape portion without a step portion.

Images