JP2023094966A - packaging container - Google Patents

Abstract

To provide a packaging container that allows for obtaining a steady outer mating state of a lid and moreover is easy to pinch a knob portion of the lid when closing the lid.SOLUTION: In a body skirt portion 21, outwardly-projecting body fitting projections 25 are not provided at a corner portion 12c but respectively provided in positions on both sides in a circumferential direction of the corner portion 12c. In a lid skirt portion 61, inwardly-projecting lid fitting projections 65 for engagement with the body fitting projections 25 when closing the lid are not provided in a corner portion 52c but respectively provided in positions on both sides in a circumferential direction of the corner portion 52c, so that, when closing the lid, a lid knob portion 68 is in an inclination posture upwardly inclining with respect to a basic posture before closing the lid.SELECTED DRAWING: Figure 1

Description

The present invention relates to a packaging container suitable for containing food.

Patent Document 1 listed below describes a container in which a lid is externally fitted to a container body, and a knob portion of the body and a knob portion of the lid overlap each other when the lid is closed. In this type of container, the handle of the main body is provided with an upward projection, or the handle of the lid is provided with a downward projection. These protrusions can create a gap between the knob portion of the main body and the knob portion of the lid, making it easier to open the lid. If these protrusions are provided near the tip of the knob, the knob of the lid does not rise significantly, and the protrusions tend to get in the way of pinching the knob with your fingertips. Therefore, the protrusion is provided near the base end of the knob, but there is a concern that if the protrusion is provided near the base end of the knob, the outer fitting state of the lid tends to be weakened.

Japanese Utility Model Laid-Open No. 62-76147

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a packaging container in which the lid can be securely fitted to the outside and in which the knob portion of the lid can be easily picked when the lid is closed.

A packaging container according to the present invention has a rectangular shape in a plan view, and includes a container body having a body flange portion provided around the container body, and a lid having a lid flange portion provided around the body flange portion to be externally fitted to the body flange portion when the lid is closed. wherein the body flange portion has a body skirt portion extending downward and a body rim portion extending outward from the body skirt portion, and a corner portion of the body rim portion protrudes outward The lid flange portion includes a lid skirt portion that extends downward and fits outside the body skirt portion when the lid is closed, and a lid skirt portion that extends outward from the lid skirt portion and extends outward from the body edging portion when the lid is closed. a corner portion of the lid rim portion is provided with a lid knob portion that protrudes outward and is positioned above the main body knob portion when the lid is closed; body fitting projections protruding outward are not provided in the corners, but are provided on both sides of the corners in the circumferential direction, and on the lid skirt portion, they project inward and are engaged with the body fitting projections when the lid is closed. The lid fitting protrusions are not provided on the corners, but are provided on both sides of the corners in the circumferential direction. It becomes a tilted posture.

When the lid is closed, the lid fits over the container body. A body fitting projection and a lid fitting projection are provided on both sides of the corner portion, respectively. On the other hand, the corner portion is not provided with the main body fitting projection and the lid fitting projection. When the lid skirt portion is externally fitted to the main body skirt portion during the lid closing operation, the lid fitting protrusion passes over the main body fitting protrusion so as to ride over the body fitting protrusion, and eventually the lid fitting protrusion is positioned below the main body fitting protrusion. , and engages with the body fitting projection. In this manner, by fitting the lid skirt portion to the body skirt portion, the lid skirt portion is pushed outward by the body skirt portion and swells on both sides in the circumferential direction of the corner portion. That is, in the vicinity of the corner portion, the two sides of the lid skirt portion positioned on both sides of the corner portion are pushed apart from each other in plan view. On the other hand, at the corners, the lid skirt is not pushed by the body skirt, or even if pushed to a less extent, the lid skirt at the corners does not substantially bulge. Since the lid flange portion is provided with a lid edging portion that extends outward from the lid skirt portion, the two side portions of the lid skirt portion swell outward on both sides in the circumferential direction of the corner portion to form the lid knob portion. will be pulled inwards. As a result, the lid knob is automatically slanted upward and lifted from the main body knob. The main body knob is in a substantially horizontal state. As a result, a gap is generated between the lid knob in an inclined posture and the main body knob in a substantially horizontal posture. When opening the lid, the user can easily grasp the upwardly inclined lid knob, for example, hold the lid knob with one hand and the main body knob with the other hand to open the lid. be able to.

In particular, P2S and P2L are the outer dimensions of the main body fitting projections on both sides of the corner portion in two directions of the container body, respectively, and the contact of the lid skirt portion with which the body fitting projections abut on both sides of the corner portion when the lid is closed. It is preferable that P2S>Q3S and P2L>Q3L, where Q3S and Q3L are the inner dimensions of the lid in two directions in plan view at the portion. According to this configuration, when the lid is closed, the body fitting projections push the lid skirt portion outward in two directions on both sides of the corner portion. That is, the lid skirt is spread out in two directions along the two sides of the lid on both sides of the corner. As a result, the lid knob is securely and greatly inclined.

Alternatively, the inner dimensions of the lid fitting projections on both sides of the corner portion in the two directions of the lid in plan view are set to Q2S and Q2L, respectively, and the abutting portions of the body skirt portion with which the lid fitting projections abut on both sides of the corner portion when the lid is closed. It is preferable that P3S>Q2S and P3L>Q2L, where P3S and P3L are the outer dimensions of the container body in two directions in plan view. According to this configuration, when the lid is closed, the body skirt portion pushes the lid fitting projections outward in two directions on both sides of the corner portion. That is, the lid skirt is spread out in two directions along the two sides of the lid on both sides of the corner. As a result, the lid knob is securely and greatly inclined. If P2S>Q3S and P2L>Q3L, and if P3S>Q2S and P3L>Q2L, the lid skirt portion is more reliably pushed open in two directions, and the lid grip portion is more reliably and furthermore expanded. , can be greatly inclined.

Further, a packaging container according to the present invention is a packaging container comprising a container body having a body flange portion provided around it, and a lid having a lid flange portion provided around the body flange portion to be externally fitted to the body flange portion when the lid is closed. The container, wherein the body flange portion has a body skirt portion extending downward and a body rim portion extending outwardly from the body skirt portion, and the body rim portion is provided with a body knob projecting outward. The lid flange portion includes a lid skirt portion that extends downward and is externally fitted to the body skirt portion when the lid is closed, and a lid rim portion that extends outward from the lid skirt portion and is positioned above the body rim portion when the lid is closed. and, the lid edge portion is provided with a lid knob portion that protrudes outward and is positioned above the main body knob portion when the lid is closed, and the main body skirt portion is provided with a main body fitting projection that protrudes outward, It is not provided at a position corresponding to the main body knob, but is provided at positions on both sides in the circumferential direction of the position corresponding to the main body knob. The lid fitting projections for locking are not provided at the position corresponding to the lid knob portion, but are provided at positions on both sides in the circumferential direction of the position corresponding to the lid knob portion, and when the lid is closed, the lid knob portion The tilted posture is tilted upward with respect to the previous basic posture.

When the lid is closed, the lid fits over the container body. Main body fitting protrusions are provided on both sides in the circumferential direction of the body knob, and lid fitting protrusions are provided on both sides in the circumferential direction of the lid knob. On the other hand, the body fitting projection is not provided at a position corresponding to the body knob portion, and the lid fitting projection is not provided at a position corresponding to the lid knob portion. When the lid skirt portion is externally fitted to the main body skirt portion during the lid closing operation, the lid fitting protrusion passes over the main body fitting protrusion so as to ride over the body fitting protrusion, and eventually the lid fitting protrusion is positioned below the main body fitting protrusion. , and engages with the body fitting projection. In this manner, by fitting the lid skirt portion to the main skirt portion, the lid skirt portion is pushed outward by the main skirt portion on both sides in the circumferential direction of the lid knob portion and swells. On the other hand, at the position corresponding to the lid knob, the lid skirt is not pushed by the body skirt, or even if pushed to a less extent, the lid skirt does not substantially bulge. The lid flange is provided with a lid edging extending outwardly from the lid skirt. Therefore, the lid skirt portion bulges outward on both sides in the circumferential direction of the lid knob portion, thereby pulling the lid knob portion inward. As a result, the lid knob is automatically slanted upward and lifted from the main body knob. The main body knob is in a substantially horizontal state. As a result, a gap is generated between the lid knob in an inclined posture and the main body knob in a substantially horizontal posture. When opening the lid, the user can easily grasp the upwardly inclined lid knob. For example, the lid can be opened by holding the lid knob with one hand and holding the body knob with the other hand.

In particular, when both the container body and the lid are circular in plan view, it is preferable to further include the following configuration. That is, PD2>QD3, where PD2 is the outer diameter of the container body at the body fitting projection, and QD3 is the inner diameter of the lid at the abutting portion of the lid skirt portion with which the body fitting projection abuts when the lid is closed. preferable. According to this configuration, when the lid is closed, the body fitting projection pushes the lid skirt portion radially outward. That is, the lid skirt portion is pushed radially outward on both sides of the lid knob portion. As a result, the lid knob is securely and greatly inclined.

Alternatively, let QD2 be the inner diameter of the lid at the lid-fitting projection, and let PD3 be the outer diameter of the container body at the abutting portion of the body skirt portion with which the lid-fitting projection abuts when the lid is closed, then PD3>QD2. preferable. According to this configuration, when the lid is closed, the body skirt portion pushes the lid fitting projection radially outward. That is, the lid skirt portion is pushed radially outward on both sides of the lid knob portion. As a result, the lid knob is securely and greatly inclined.

Moreover, it is preferable that the container main body is made of a foamed sheet and the lid is made of a non-foamed sheet. If the container body is made of foamed sheet, the container body deforms when the lid is fitted onto the container body to provide a cushioning effect, and the lid easily slides on the container body. Therefore, the lid closing operation is facilitated. On the other hand, if the lid is formed from a non-foamed sheet, the lid skirt portion is reliably pushed outward during the closing operation. In addition, the lid knob can be thin, but strong and highly rigid. Therefore, when the lid is closed, the lid knob can be easily tilted upward.

In addition, it is preferable that the main body fitting projection has a shape elongated in the circumferential direction, and the outer surface of the main body fitting projection is provided with a vertical ridge that protrudes outward and extends in the vertical direction. According to this configuration, when the lid skirt portion is externally fitted to the main body skirt portion, the vertical ridges on the outer surface of the main body fitting protrusion push the lid skirt portion outward further. Therefore, the lid knob portion is inclined further upward. In addition, since the vertical ridges are in the form of stripes extending in the vertical direction, the resistance when fitting the lid skirt portion to the body skirt portion is relatively small, and the burden of the lid closing operation is not increased. . In addition, only one vertical ridge may be provided on one main body fitting projection, or a plurality of vertical ridges may be provided on one main body fitting projection at intervals in the circumferential direction.

In particular, the lid-fitting projection is a wavy projection with an inwardly projecting amount that varies along the circumferential direction. is preferably arranged. According to this configuration, when the lid fitting projections climb over the body fitting projections during lid closing, the portions of the lid fitting projections that protrude inward relatively large slide on the vertical ridges. As a result, the lid fitting protrusion can smoothly get over the body fitting protrusion.

As described above, when the lid is closed, the lid knob automatically rises to assume the inclined posture, so that the lid can be easily opened by pinching the lid knob in the inclined posture. Moreover, since the lid skirt portion is spread outward by the main body skirt portion, a firm outer fitting state can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the lid-open state of the packaging container in one Embodiment of this invention. The enlarged perspective view which shows the open state of the same container. The perspective view which shows the closed state of the same container. The schematic plan view which shows the container main body of the same container. The schematic bottom view which shows the lid|cover of the same container. FIG. 5 is a cross-sectional view of the essential parts of the container corresponding to AA in FIG. 4, where (a) shows the lid open state and (b) shows the lid closed state; FIG. 5 is a cross-sectional view of the main part showing the opened state of the container corresponding to BB in FIG. 4; FIG. 5 is a cross-sectional view of a main part showing a closed state of the container corresponding to BB in FIG. 4; FIG. 5 is a cross-sectional view of a main part showing a closed state of the container corresponding to BB in FIG. 4; Cross-sectional view of a corner portion of the same lid. FIG. 5 is a cross-sectional view of the main part showing the opened state of the container corresponding to CC of FIG. 4; FIG. 5 is a cross-sectional view of a main part showing a closed state of the container corresponding to CC in FIG. 4; Drawing substitute photograph which shows the closed state of the same container. Drawing substitute photograph which shows the closed state of the same container. The top view which shows the container main body of the packaging container in other embodiment of this invention. The bottom view which shows the lid|cover of the same container.

A packaging container according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 14. FIG. The container is a container with a lid capable of containing various contents, and various foodstuffs are particularly suitable as the contents.

As shown in FIG. 1, the container comprises a container body 1 having an upper opening and a lid 2 detachably fitted to the outside so as to cover the container body 1 from above so as to close the upper opening of the container body 1. and Both the container body 1 and the lid 2 are formed by thermoforming synthetic resin sheets. Details of the sheet will be described later.

The container may have various shapes in plan view, such as a polygonal shape, a rectangular shape, a circular shape, an elliptical shape, and the like. The container body 1 and the lid 2 correspond to each other in plan view. In the present embodiment, a container having a rectangular shape in plan view, specifically, a container having a rectangular shape in plan view will be described as an example.

<Container body 1>
As shown in FIGS. 1, 2, 4, and 6, the container body 1 includes a bottom surface portion 10, a main body side surface portion 11 extending outward from the peripheral edge portion of the bottom surface portion 10 and standing upward, A main body flange portion 12 extending outward from the upper end portion of the main body side portion 11 is provided. A protrusion or a ridge may be provided on the upper surface of the bottom surface portion 10 . A leg portion 13 may protrude downward from the peripheral portion of the lower surface of the bottom portion 10 .

The main body flange portion 12 is provided on the upper end portion of the main body side surface portion 11 over the entire circumference. The body flange portion 12 has four side portions and four corner portions 12c in plan view. The corner portion 12c is provided between two adjacent side portions. The four sides consist of a pair of long sides 12a and a pair of short sides 12b. A corner portion 12c is provided between the adjacent long side portion 12a and short side portion 12b.

The main body flange portion 12 includes a main body flange upper surface portion 20 extending outward from the upper end portion of the main body side surface portion 11, a main body skirt portion 21 extending downward from the outer edge portion of the main body flange upper surface portion 20, and a lower end portion of the main body skirt portion 21. It has a body border 22 extending outwardly from it. The main body flange upper surface portion 20 may have various shapes, such as an upwardly curved beaded shape, a flat upper surface, or a decoration such as unevenness on the upper surface. good too. The height of the body flange upper surface portion 20 may be constant over the entire circumference, or may vary in the circumferential direction. In this embodiment, the height of the body flange upper surface portion 20 varies in the circumferential direction, being higher at the corner portions 12c and higher at the central portions of the long side portions 12a.

A main body upper inclined portion 23 inclined downward toward the outside may be provided on the upper portion of the main body skirt portion 21 . The main body upper inclined portion 23 may be provided over the entire circumference, or may be provided partially in the entire circumference. In the present embodiment, the main body upper inclined portions 23 are provided in the vicinity of the corner portion 12c and both sides in the circumferential direction, and are also provided in most of the central portion of the long side portion 12a. By partially providing the main body upper inclined portion 23, the height of the main body flange upper surface portion 20 is changed in the circumferential direction correspondingly. Note that FIG. 6 is a cross-sectional view of a portion where the main body upper inclined portion 23 is not provided.

The body skirt portion 21 has a body fitting wall portion 24 extending substantially vertically. The body fitting wall portion 24 is provided over the entire circumference. The main body fitting wall portion 24 extends below the main body upper inclined portion 23 where the main body upper inclined portion 23 is provided, and extends below the main body upper inclined portion 23 where the main body upper inclined portion 23 is not provided. It hangs down substantially vertically from the flange upper surface portion 20 toward the lower side.

As also shown in FIG. 7 , body fitting protrusions 25 are provided on the outer surface of the body skirt portion 21 . The body fitting projection 25 protrudes outward. The body fitting protrusion 25 is provided on the body fitting wall portion 24 . The main body fitting protrusions 25 are provided only at predetermined locations on the entire circumference of the main body fitting wall portion 24 . The body fitting protrusions 25 are provided on both circumferential sides of the corner portion 12c. That is, the body fitting protrusions 25 are provided at both ends of the long side portion 12a and both ends of the short side portion 12b. The body fitting protrusions 25 are provided near both circumferential sides of the corner portion 12c, but are not provided on the corner portion 12c as shown in FIG. The body fitting protrusions 25 may be provided one by one on both sides in the circumferential direction of the corner portion 12c, or may be provided in plural, and the number thereof is arbitrary.

The body fitting protrusion 25 may have various shapes when viewed from the front, but preferably has a strip shape elongated in the circumferential direction. The circumferential length of the main body fitting projection 25 on the long side portion 12a may be longer than the circumferential length of the main body fitting projection 25 on the short side portion 12b. The body fitting projections 25 on the long side portions 12a are arranged to face each other, and the body fitting projections 25 on the short side portions 12b are also arranged to face each other. The main body fitting projection 25 is preferably provided only in the vicinity of the corner portion 12c, but may also be provided, for example, in the central portion of the side.

The main body fitting projection 25 is provided only on the upper part of the main body fitting wall portion 24, and is not provided on the lower part. By providing the main body fitting protrusion 25 on the upper part of the main body fitting wall part 24, the upper part of the main body fitting wall part 24 may be locally thicker than the lower part. The lower portion of the outer surface of the body fitting wall portion 24 serves as a body engaging recess 26 that is relatively recessed inward compared to the body fitting projection 25, and the body engaging recess 26 is fitted with a lid fitting projection described later. 65 are engaged. The bottom surface of the body engaging recess 26 is the abutment portion with which the lid fitting protrusion 65 abuts when the lid is closed. In this embodiment, the bottom surface of the body engaging recess 26 is flush with the outer surface (body fitting reference surface) of the portion of the body fitting wall 24 where the body fitting protrusion 25 is not provided. It does not have to be flush.

It is preferable that a vertically extending vertical ridge 27 is provided on the outer surface of the body fitting projection 25 . The vertical ridges 27 may be thin streaks or linear. The vertical projection 27 may be provided over the entire length of the body fitting projection 25 in the vertical direction. Although only one vertical projection 27 may be provided on one body fitting projection 25, preferably, a plurality of vertical projections 27 are provided at intervals in the circumferential direction. Although the number of vertical ridges 27 is arbitrary, in this embodiment, three vertical ridges 27 are provided on the body fitting projection 25 of the long side 12a, and the body fitting projection 25 of the short side 12b is provided with three vertical ridges 27. is provided with two vertical ridges 27 . In addition, it is preferable that the vertical protrusion 27 is provided at a position corresponding to the first protrusion 65a, which will be described later.

The main body edging portion 22 is a portion that becomes the outer edge of the container main body 1 and extends substantially horizontally toward the outside. The main body edging portion 22 of the corner portion 12c is provided with a main body knob portion 28 that protrudes outward from the other portion of the main body edging portion 22. As shown in FIG. The body knob portion 28 is substantially horizontal. The main body knob portion 28 may be provided at an appropriate position among the four corner portions 12c, may be provided at all the corner portions 12c, or may be provided at only one location. It is provided at two corner portions 12c positioned on a diagonal line.

An inner edge portion of the main body edging portion 22 may be provided with a raised portion 29 that rises one step above the outer edge portion of the main body edging portion 22 . By providing the raised portion 29, the inner edge portion of the main body edging portion 22 may be thicker than the outer edge portion. The raised portion 29 is preferably a ridge extending along the circumferential direction. The raised portion 29 is preferably provided on the entire circumference of the main body edging portion 22 except for the corner portion 12 c , and preferably provided at least below the main body fitting projection 25 . At the lower end of the main body skirt portion 21, that is, at the boundary between the main body skirt portion 21 and the main body edging portion 22, a lower main body inclined portion 30 may be provided that slopes down toward the outside. A raised portion 29 may be connected to the outside of the .

<Lid 2>
The lid 2 is formed in a plan view shape corresponding to the container body 1 . As shown in FIGS. 1, 2, 5, and 6, the lid 2 includes a top surface portion 50, a lid side surface portion 51 extending downward from the periphery of the top surface portion 50 while expanding, and a lid A lid flange portion 52 extending outward from the lower end portion of the side portion 51 is provided. The top surface portion 50 may be formed of a smooth surface without unevenness such as ribs, and is preferably a flat surface. A blocking prevention projection 53 is formed at the lower end of the lid side surface portion 51 to prevent a phenomenon (blocking phenomenon) in which the lids 2 are tightly fitted to each other and cannot be separated when the lids 2 are overlapped. is preferred. It should be noted that the container body 1 may also be similarly provided with an anti-blocking projection (not shown).

The shape of the lid flange portion 52 in plan view corresponds to the body flange portion 12 . The lid flange portion 52 is provided on the lower end portion of the lid side surface portion 51 over the entire circumference. The lid flange portion 52 has four side portions and four corner portions 52c in plan view. The corner portion 52c is provided between two adjacent side portions. The four sides consist of a pair of long sides 52a and a pair of short sides 52b. A corner portion 52c is provided between the adjacent long side portion 52a and short side portion 52b.

The lid flange portion 52 includes a lid flange upper surface portion 60 extending outward from the lower end portion of the lid side surface portion 51 , a lid skirt portion 61 extending downward from the outer edge portion of the lid flange upper surface portion 60 , and a lower end portion of the lid skirt portion 61 . It has a lid rim 62 extending outwardly from it. The lid flange top surface 60 may be a flat surface. The height of the lid flange upper surface portion 60 may be constant over the entire circumference, or may vary in the circumferential direction. In this embodiment, the height of the lid flange upper surface portion 60 changes in the circumferential direction corresponding to the main body flange upper surface portion 20, and is higher at the corner portions 52c and at the center of the long side portion 52a. higher in the part.

An upper portion of the lid skirt portion 61 may be provided with a lid upper portion inclined portion 63 downwardly inclined toward the outside corresponding to the main body upper portion inclined portion 23 . The lid upper inclined portion 63 may be provided over the entire circumference, or may be provided partially in the entire circumference. In this embodiment, the lid upper inclined portion 63 is provided over the entire circumference, but the vertical dimension of the lid upper inclined portion 63 is not constant over the entire circumference, but varies in the circumferential direction. there is That is, the vertical dimension of the lid upper inclined portion 63 is large at the corner portion 52c and large at the central portion of the long side portion 52a.

The lid upper inclined portion 63 has a bent portion 63a in the middle in the vertical direction. The bent portion 63a is bent so as to protrude inward. The bent portion 63a is provided over the entire circumference and is provided in a streak shape along the circumferential direction. It is preferable that the height of the bent portion 63a is constant in the circumferential direction. The lid upper inclined portion 63 is divided into two upper and lower portions by a streak-like bent portion 63a. The lid upper inclined portion 63 has a first inclined portion 63b positioned above the bent portion 63a and a second inclined portion 63c positioned below the bent portion 63a. The first inclined portion 63b is relatively steep, and the second inclined portion 63c is relatively gentle. The first slanted portion 63b and the second slanted portion 63c are bent in a valley fold on the outer surface at the bent portion 63a. The vertical dimension of the first inclined portion 63b varies along the circumferential direction, and the vertical dimension of the second inclined portion 63c is constant along the circumferential direction. The vertical dimension of the first inclined portion 63b is large at the corner portion 52c and large at the central portion of the long side portion 52a. As the vertical dimension of the first inclined portion 63b changes in the circumferential direction, the vertical dimension of the lid upper inclined portion 63 changes in the circumferential direction. also varies in the circumferential direction. FIG. 6 is a cross-sectional view of a portion of the lid upper inclined portion 63 where the vertical dimension is the smallest, and is a cross-sectional view of a location where the vertical dimension of the first inclined portion 63b is the smallest. It is a cross-sectional view of the lowest portion of the portion 60 .

The lid skirt portion 61 has a substantially vertically extending lid fitting wall portion 64 . The lid fitting wall portion 64 fits on the outside of the body fitting wall portion 24 . The lid fitting wall portion 64 is provided over the entire circumference. The lid fitting wall portion 64 extends below the lid upper inclined portion 63 and hangs down substantially vertically.

As also shown in FIG. 7, the lid skirt portion 61 is provided with lid fitting projections 65 . The lid fitting protrusion 65 protrudes inward. The lid fitting projection 65 is provided on the inner surface of the lid fitting wall portion 64 . The lid fitting projection 65 protrudes inward from the inner surface of the portion of the lid fitting wall portion 64 where the lid fitting projection 65 is not provided as a reference surface (lid fitting reference surface) by a predetermined amount. Protruding. The lid fitting projections 65 are provided only at predetermined locations on the entire circumference of the lid fitting wall portion 64 . The lid fitting projection 65 is arranged corresponding to the body fitting projection 25 . The lid fitting protrusions 65 are provided near both sides in the circumferential direction of the corner portion 52c, but are not provided on the corner portion 52c as shown in FIG. That is, the lid fitting protrusions 65 are provided at both ends of the long side portion 52a and both ends of the short side portion 52b, respectively. Although the number and shape of the lid fitting projections 65 may vary, the circumferential range in which the lid fitting projections 65 are provided corresponds to the circumferential range in which the body fitting projections 25 are provided. preferable. The lid fitting protrusions 65 on the long side portions 52a are arranged to face each other, and the lid fitting protrusions 65 on the short side portions 52b are also arranged to face each other. The lid fitting projection 65 is preferably provided only in the vicinity of the corner portion 52c, but may also be provided, for example, in the central portion of the side. Further, in this embodiment, as shown in FIG. 2, a corner rib 69 extending vertically and protruding outward is provided on the lid fitting wall portion 65 of the corner portion 52c.

The lid fitting protrusion 65 is provided only on the lower portion of the lid fitting wall portion 64 and is not provided on the upper portion. Since the lid fitting projection 65 directed inward is provided at the lower portion of the lid fitting wall portion 64 , the upper portion of the inner surface of the lid fitting wall portion 64 is recessed outward relative to the lid fitting projection 65 . A lid engagement recess 66 is formed, and the body fitting protrusion 25 is engaged with the lid engagement recess 66 . The bottom surface of the lid engaging recess 66 is the abutment portion with which the body fitting protrusion 25 abuts when the lid is closed. In this embodiment, the bottom surface of the lid engaging recess 66 is flush with the inner surface (lid fitting reference surface) of the portion of the lid fitting wall portion 64 where the lid fitting protrusion 65 is not provided. It does not have to be flush. At the lower end of the lid skirt portion 61 , that is, at the boundary between the lid skirt portion 61 and the lid edging portion 62 , a lid lower slope portion 67 that slopes down toward the outside may be provided.

The shape of the lid-fitting projection 65 may be various, and may be a streak-like projection whose amount of protrusion is constant along the circumferential direction, or may be one whose amount of protrusion varies in the circumferential direction. In this embodiment, it is a wave-shaped protrusion whose protrusion amount changes in the circumferential direction. The details of the case where the lid fitting projection 65 is a wave-shaped projection will be described below.

The lid-fitting protrusion 65 has a first protrusion 65a and a second protrusion 65b with different protrusion amounts. The amount of protrusion of the second protrusion 65b is smaller than the amount of protrusion of the first protrusion 65a, for example, half. Note that FIG. 7 shows a cross-sectional view of the first convex portion 65a having a relatively large amount of protrusion. The first protrusions 65a are provided adjacent to both the left and right sides of the second protrusions 65b. In other words, the second protrusion 65b with a small protrusion amount is provided adjacent to the pair of first protrusions 65a with a large protrusion amount. The protrusion amount changes continuously from the first protrusion 65a to the second protrusion 65b and from the second protrusion 65b to the first protrusion 65a.

A pair of the first convex portion 65a and the second convex portion 65b are grouped together to form one convex assembly 65c. The lid fitting protrusion 65 has a plurality of protrusion aggregates 65c. A plurality of protrusion aggregates 65c are arranged side by side in the circumferential direction on one lid fitting protrusion 65 . The number of convex aggregates 65c in one lid fitting projection 65 is arbitrary. In the present embodiment, the long side portion 52a has a large amount, and the short side portion 52b has a small amount. Specifically, three convex aggregates 65c are arranged side by side on the long side portion 52a, and two convex aggregates 65c are arranged side by side on the short side portion 52b.

An intermediate portion 65d is provided between adjacent convex aggregates 65c. As shown in FIG. 10, in this embodiment, the intermediate portion 65d is flush with the inner surface of the lid fitting wall portion 64 and does not protrude inward. That is, in this embodiment, the amount of protrusion of the intermediate portion 65d is zero. However, the intermediate portion 65 d may protrude inward with respect to the inner surface of the lid fitting wall portion 64 . The intermediate portion 65d is provided adjacently between the first convex portion 65a of one convex aggregate 65c and the first convex portion 65a of the other convex aggregate 65c. The amount of protrusion of the lid fitting projection 65 decreases continuously from the first convex portion 65a of one convex aggregate 65c to the intermediate portion 65d, and from the intermediate portion 65d to the first convex portion 65a of the other convex aggregate 65c. continuously increasing. In this way, the lid fitting protrusion 65 has three portions (the first protrusion 65a, the second protrusion 65b, and the intermediate portion 65d) with different protrusion amounts. The first convex portion 65a, the second convex portion 65b, the first convex portion 65a, the intermediate portion 65d, the first convex portion 65a, the second convex portion 65b, the first convex portion 65a, and the intermediate portion 65d are arranged in this order. .

The lid rim portion 62 is a portion that forms the outer edge of the lid 2 and extends substantially horizontally toward the outside. The lid edging portion 62 of the corner portion 52c is provided with a lid gripping portion 68 that protrudes outward from the other portion of the lid edging portion 62 . The lid knob 68 is substantially horizontal. The lid knob 68 is provided at a position corresponding to the body knob 28 . The lid knob portion 68 may be provided at an appropriate position among the four corner portions 52c, may be provided at all the corner portions 52c, or may be provided at only one location. It is provided at two corner portions 52c positioned on a diagonal line.

At least on the outer peripheral edge side of the main body edging part 22 and the lid edging part 62, a large number of very fine irregularities may be formed to reinforce and prevent fingers from being cut. The unevenness has a wavy shape when viewed from the front, and the directions of a large number of peaks and valleys are formed short in the width direction at each side, and along the radial direction in plan view at the corners. be done. Further, the unevenness is formed by, for example, flat knurling or twilled knurling, and is preferably formed by twilled knurling in order to prevent slippage.

The container body 1 and the lid 2 are formed by so-called sheet molding. Sheet molding includes, for example, vacuum molding, air pressure molding, vacuum air pressure molding, double-sided vacuum molding, hot plate molding, etc. In any case, the synthetic resin sheet is thermoformed. The synthetic resin sheet is made of, for example, a styrene resin such as polyethylene terephthalate or polystyrene, or an olefin resin such as polypropylene or polyethylene. A transparent sheet may also be used for the container body 1 . A stretched sheet obtained by appropriately stretching these sheets is a more preferable sheet material because it can improve heat resistance and strength while maintaining transparency.

In addition to these materials, the container body 1 can also be made of a non-transparent material such as a sheet obtained by filling an inorganic substance into the synthetic resin described above, or a foam sheet obtained by foaming these sheet materials. In addition, it may be an expanded polystyrene sheet obtained by foaming polystyrene, or a heat-resistant expanded styrene resin sheet using a styrene resin with improved heat resistance containing polyphenylene ether, which has excellent heat resistance as polystyrene. . Furthermore, a laminated sheet obtained by laminating a printed foam sheet or a plain resin film on one side or both sides thereof can also be used. In particular, the container body 1 is preferably made of a foamed sheet, and the lid 2 is preferably made of a non-foamed sheet. If the container body 1 is made of a foam sheet, the foam sheet is likely to be deformed like a cushion when the lid fitting projection 65 climbs over the body fitting projection 25 during closing of the lid, resulting in a cushioning effect. , the lid fitting projection 65 smoothly rides over the body fitting projection 25 . In addition, the lid fitting projection 65 can easily slide over the outer surface of the body fitting projection 25 . On the other hand, if the lid 2 is made of a non-foamed sheet, the lid knob portion 68 can be made taut and highly rigid. Further, the lid fitting wall portion 64 is reliably pushed outward during the lid closing operation. Therefore, the lid knob portion 68 can be easily inclined upward when the lid is closed.

As described above, the lid fitting wall portion 64 is externally fitted to the body fitting wall portion 24 when the lid is closed. In the closed state, the lid flange upper surface portion 60 faces the main body flange upper surface portion 20 . A gap may be formed between the body flange top surface portion 20 and the lid flange top surface portion 60, or the body flange top surface portion 20 and the lid flange top surface portion 60 may abut. It is preferable that the bent portion 63 a of the lid upper sloped portion 63 abut on the main body upper sloped portion 23 . A lid knob 68 overlaps the main body knob 28 .

<Relationship between the outer dimensions of the container body 1 and the inner dimensions of the lid 2>
Here, the relationship between the outer surface dimension (outer dimension) of the body fitting wall portion 24 and the inner surface dimension (inner dimension) of the lid fitting wall portion 64 will be described. Although the dimensions in the short side direction will be described below, the same applies to the dimensions in the long side direction. As shown in FIGS. 4, 6 and 7, between the body fitting reference surfaces (the outer surfaces of the body fitting wall portions 24 where the body fitting projections 25 are not provided) of the pair of long sides 12a. P1S<P2S, where P1S is the separation distance (the separation distance in the short side direction) and P2S is the separation distance between the outer surfaces of the main body fitting protrusions 25 on the pair of long side portions 12a. Half of the difference between P1S and P2S is the amount of protrusion of the body fitting projection 25 on one side. However, this P2S does not include the projection amount of the vertical ridges 27 . When the vertical ridge 27 is included, the difference between P1S and P2S increases accordingly. That is, by providing the vertical ridges 27, it is possible to increase the amount of projection of the main body fitting projections 25. As shown in FIG. Further, in the present embodiment, the distance between the main body fitting reference surfaces (outer dimension of the main body on the main body fitting reference surface) P1S and the distance between the main body engaging recesses 26 (main body outer dimensions at the main body engaging recesses 26 Dimension) P3S are equal and have a relationship of P1S=P3S. However, P1S and P3S may be different.

On the other hand, as shown in FIGS. 5 to 7, the distance between the lid fitting reference surfaces (the inner surfaces of the portions of the lid fitting wall portion 64 where the lid fitting projections 65 are not provided) of the pair of long side portions 52a Letting Q1S be the distance (the distance in the direction of the short side) and Q2S be the distance between the inner surfaces of the lid fitting projections 65 on the pair of long sides 52a, then Q1S>Q2S. Half of the difference between Q1S and Q2S is the protrusion amount of the lid fitting projection 65 on one side. In this embodiment, since the lid fitting protrusion 65 is a wave-like protrusion, Q2S is the dimension of the first protrusion 65a having the largest inward protrusion amount. In addition, in the present embodiment, the distance between the lid fitting reference surfaces (the inner dimension of the lid at the lid fitting reference surface) Q1S and the distance between the lid engaging recesses 66 (the lid inner dimension of the lid engaging recess 66). Dimension) Q3S are equal and have a relationship of Q1S=Q3S. However, Q1S and Q3S may be different.

In the present embodiment, as shown in FIG. 6(b), at locations where the main body fitting projection 25 and the lid fitting projection 65 are not provided, the outer surface of the main body fitting wall portion 24 (main body fitting projection) when the lid is closed. A gap is generated between the reference surface) and the inner surface of the lid fitting wall portion 64 (lid fitting reference surface). That is, P1S<Q1S. Note that the lid fitting reference surface may abut on the body fitting reference surface. That is, P1S=Q1S may be satisfied.

On the other hand, FIG. 7 shows the lid open state at the location where the body fitting projection 25 and the lid fitting projection 65 are provided, and FIG. 8 and FIG. 9 show the lid closed state. FIG. 8 shows the lid 2 as it is without considering the deformation of the lid 2, and FIG. 9 shows the deformed state of the lid 2. As shown in FIG. First, the main body outer dimension P2S at the main body fitting projection 25 is larger than the lid inner dimension Q2S at the lid fitting projection 65, and there is a relationship of P2S>Q2S. Therefore, when the lid 2 is put on the container body 1, the lid fitting projection 65 rides over the body fitting projection 25 downward while elastically deforming such that the lid fitting wall portion 64 expands outward.

The main body outer dimension P2S at the main body fitting protrusion 25 is larger than the lid inner dimension Q3S at the lid engaging recess 66, and the relationship is P2S>Q3S. Therefore, when the lid is closed, the lid engaging recess 66 is pushed outward in the short side direction by the body fitting projection 25, and the lid fitting wall portion 64 bulges outward. Further, the lid inner dimension Q2S at the lid fitting projection 65 is smaller than the body outer dimension P3S at the body engaging recess 26, and the relationship is P3S>Q2S. Therefore, the lid fitting projection 65 is pushed outward in the short side direction by the body engaging recess 26, and the lid fitting wall portion 64 bulges outward.

Thus, when the lid is closed, the lid fitting wall portion 64 of the long side portion 52a is pushed outward in the short side direction by the main body fitting wall portion 24 of the long side portion 12a in the vicinity of the corner portion 52c and swells. It will be. The same can be said for the long side direction.

That is, the separation distance (the separation distance in the long side direction) between the main body fitting reference surfaces (the outer surfaces of the portions of the main body fitting wall portions 24 where the main body fitting protrusions 25 are not provided) of the pair of short side portions 12b. is P1L, and the separation distance between the outer surfaces of the body fitting protrusions 25 on the pair of short side portions 12b is P2L, then P1L<P2L. In the present embodiment, the distance between the main body fitting reference surfaces (main body outer dimension on the main body fitting reference surface) P1L and the distance between the main body engaging recesses 26 (main body outer dimension at the main body engaging recesses 26) P3L are equal and have the relationship P1L=P3L. However, P1L and P3L may differ.

Q1L is the separation distance (the separation distance in the long side direction) between the lid fitting reference surfaces of the pair of short side portions 52b (the inner surface of the portion of the lid fitting wall portion 64 where the lid fitting protrusion 65 is not provided). Assuming that the distance between the inner surfaces of the lid fitting projections 65 on the pair of short sides 52b is Q2L, Q1L>Q2L. In this embodiment, the separation distance between the lid fitting reference surfaces (lid inner dimension at the lid fitting reference surface) Q1L and the separation distance between the lid engaging recesses 66 (lid inner dimension at the lid engaging recesses 66) Q3L are equal and have the relationship Q1L=Q3L. However, Q1L and Q3L may be different.

In the present embodiment, at locations where the main body fitting projection 25 and the lid fitting projection 65 are not provided, the outer surface of the main body fitting wall portion 24 (main body fitting reference surface) and the lid fitting wall portion when the lid is closed. A gap is generated between the inner surface of 64 (lid fitting reference surface). That is, P1L<Q1L. Note that the lid fitting reference surface may abut against the body fitting reference surface. That is, P1L=Q1L may be satisfied.

The body outer dimension P2L at the body fitting projection 25 is larger than the lid inner dimension Q2L at the lid fitting projection 65, and there is a relationship of P2L>Q2L. Therefore, when the lid 2 is put on the container body 1, the lid fitting projection 65 rides over the body fitting projection 25 downward while elastically deforming such that the lid fitting wall portion 64 expands outward.

The main body outer dimension P2L at the main body fitting protrusion 25 is larger than the lid inner dimension Q3L at the lid engaging recess 66, and the relationship is P2L>Q3L. Therefore, when the lid is closed, the lid engaging recess 66 is pushed outward in the longitudinal direction by the body fitting projection 25, and the lid fitting wall portion 64 bulges outward. In addition, the lid inner dimension Q2L at the lid fitting projection 65 is smaller than the body outer dimension P3L at the body engaging recess 26, and there is a relationship of P3L>Q2L. Therefore, the lid fitting protrusion 65 is pushed outward in the longitudinal direction by the main body engaging recess 26, and the lid fitting wall portion 64 bulges outward.

Thus, when the lid is closed, the lid fitting wall portion 64 of the short side portion 52b is pushed outward in the long side direction by the main body fitting wall portion 24 of the short side portion 12b near the corner portion 52c and swells. It will be. That is, when the lid is closed, the lid fitting wall portions 64 are pushed apart in two directions, ie, the short side direction and the long side direction, by the main body fitting wall portions 24 at positions near the corner portion 52c and on both sides in the circumferential direction. different. As shown in FIG. 9, the opening angle α at which the lid fitting wall portion 64 is pushed outward is preferably 10 to 30 degrees based on the original state before the lid is closed. If the opening angle α is less than 10 degrees, the lid knob portion 68 cannot be sufficiently inclined. On the other hand, if the opening angle .alpha. exceeds 30 degrees, it becomes difficult to close the lid 2 during the lid closing operation, resulting in reduced workability. From these two points of view, the opening angle α is more preferably 12 to 28 degrees.

On the other hand, the corner portion 12c of the container body 1 is not provided with the body fitting projection 25, and the corner portion 52c of the lid 2 is not provided with the lid fitting projection 36. As shown in FIG. Therefore, a gap exists between the body fitting wall portion 24 and the lid fitting wall portion 64 when the lid is closed as shown in FIG. As described above, as the lid fitting wall portions 64 are pushed apart by the body fitting wall portions 24 on both sides in the circumferential direction of the corner portion 52c in two directions of the long side direction and the short side direction, the lid knob portions 68 are opened. is automatically tilted upwards. In FIG. 12, the state indicated by the two-dot chain line is the basic posture of the lid knob 68 in the open lid state, which is substantially horizontal. On the other hand, the state indicated by solid lines in FIG. In this manner, the lid knob portion 68 automatically tilts upward from the basic posture indicated by the two-dot chain line to the tilted posture indicated by the solid line. Then, the lid knob portion 68 assumes an upwardly inclined posture, so that the lid knob portion 68 is in a state of being largely floated above the main body knob portion 28 . The body knob portion 28 is in a substantially horizontal state. Therefore, a gap is formed between the lid knob portion 68 in the inclined position and the main body knob portion 28 in the substantially horizontal position. Therefore, the user can easily open the lid by holding the lid knob 68 with one hand and holding the body knob 28 with the other hand, for example.

In addition, unlike the conventional projections provided on the lower surface of the lid knob portion 68 and the lower surface of the main body knob portion 28 to float the lid knob portion 68 from the main body knob portion 28, both sides of the corner portion 52c in the circumferential direction are provided with projections. Since the lid fitting wall portion 64 is pressed against the main body fitting wall portion 24 in two directions, ie, the long side direction and the short side direction, a firm outer fitting state can be obtained, and the lid 2 can be inadvertently pulled from the container body 1 . It is also prevented from coming off.

In particular, the container of this embodiment has a rectangular shape in plan view, and the corner portion 52c is provided with a lid knob portion 68, and the lid fitting wall portion 64 is inclined at an angle of 90 degrees in plan view on both sides of the corner portion 52c in the circumferential direction. Therefore, the force exerted by the body fitting wall portion 24 on the lid fitting wall portion 64 reliably acts on the lid fitting wall portion 64, and the lid knob portion 68 at the corner portion 52c is reliably inclined upward. Posture.

Moreover, in this embodiment, since the vertical ridges 27 are further projected from the outer surface of the main body fitting projection 25, the lid fitting wall portion 64 is pushed apart more strongly. On the other hand, since the vertical projection 27 extends vertically and has a narrow width, the lid fitting projection 64 can easily climb over the body fitting projection 25, and the lid closing operation can be performed smoothly. Furthermore, since the lid fitting projection 65 is a wavy projection whose projection amount varies in the circumferential direction, the lid fitting projection 65 can smoothly climb over the main body fitting projection 25 during the lid closing operation, thereby facilitating the lid closing operation. It can be done smoothly and easily. Moreover, after the lid is closed, the lid fitting protrusion 65 is firmly locked to the body fitting protrusion 25 mainly by the first convex portion 65a having a large protrusion amount, thereby preventing the lid 2 from coming off. Since the first projection 65a and the vertical projection 27 are arranged to correspond to each other, the first projection 65a and the vertical projection 27 move over the body fitting projection 25 when the lid fitting projection 65 climbs over the body fitting projection 25. will slide. Therefore, the lid fitting projection 65 can smoothly climb over the body fitting projection 25, and the lid closing operation can be performed easily.

It should be noted that, when the lid is closed, if the lid lower inclined portion 67 or the lid edging portion 62 abuts against the raised portion 29 on both sides in the circumferential direction of the corner portions 12c and 52c, the lid fitting wall portion 67 is deformed to bulge outward. Guided by this, the lid fitting wall portion 67 can smoothly bulge outward.

In this embodiment, P2S>Q3S, P2L>Q3L, and P3S>Q2S, P3L>Q2L. While being pushed outward, the lid fitting projection 65 was pushed outward by the main body engaging recess 26, but only the relationship of P2S>Q3S and P2L>Q3L, or only the relationship of P3S>Q2S and P3L>Q2L. may That is, when the lid is closed, even if the lid engaging recess 66 is only pushed outward by the main body engaging projection 25 or the lid engaging projection 65 is only pushed outward by the main body engaging recess 26. good.

In this embodiment, the container is rectangular in plan view, but may be circular in plan view as shown in FIGS. 15 and 16 . When the lid is closed, each lid knob 68 overlaps the corresponding main body knob 28 and assumes an upwardly inclined posture. In this case, PD2 is the outer diameter of the container body 1 at the body fitting projection 25, and the inner diameter of the lid 2 at the lid engaging recess 66 (contact portion of the lid skirt portion 61) with which the body fitting projection 25 abuts when the lid is closed. is QD3, there is a relationship of PD2>QD3. Therefore, when the lid is closed, the body fitting protrusion 25 pushes the lid engaging recess 66 radially outward. That is, the lid fitting wall portion 64 is pushed outward in the radial direction on both sides of the lid knob portion 68 .

The inner diameter of the lid 2 at the lid fitting projection 65 is defined as QD2, and the outer diameter of the container body 1 at the body engaging recess 26 (contact portion of the body skirt portion 21) with which the lid fitting projection 65 abuts when the lid is closed is QD2. When PD3 is assumed, there is a relationship of PD3>QD2. Therefore, when the lid is closed, the body engaging recess 26 pushes the lid fitting projection 65 radially outward. That is, the lid fitting wall portion 64 is pushed outward in the radial direction on both sides of the lid knob portion 68 .

In this manner, when the lid is closed, the main body fitting projections 25 and the main body engaging recesses 26 push the lid fitting wall portions 64 radially outward on both sides of the lid knob portion 68 in the circumferential direction. The wall portions 64 bulge radially outward on both sides of the lid knob portion 68 in the circumferential direction. Therefore, when the lid is closed, the lid knob 68 is automatically tilted upward and rises from the main body knob 28 . Alternatively, only one of the body fitting projection 25 and the body fitting recess 26 may push the lid fitting wall portion 64 radially outward.

REFERENCE SIGNS LIST 1 container main body 2 lid 10 bottom surface 11 main body side surface 12 main body flange 12a long side 12b short side 12c corner 13 leg 20 main body flange upper surface 21 main body skirt 22 main body edging 23 main body upper inclined portion 24 main body Fitting wall portion 25 Main body fitting projection 26 Main body engagement concave portion 27 Vertical ridge 28 Main body knob portion 29 Rising portion 30 Main body lower inclined portion 50 Top surface portion 51 Lid side surface portion 52 Lid flange portion 52a Long side portion 52b Short side portion 52c corner portion 53 anti-blocking convex portion 60 lid flange upper surface portion 61 lid skirt portion 62 lid edging portion 63 lid upper inclined portion 63a bending portion 63b first inclined portion 63c second inclined portion 64 lid fitting wall portion 65 lid fitting projection 65a first convex portion 65b second convex portion 65c convex assembly 65d intermediate portion 66 lid engaging concave portion 67 lid lower inclined portion 68 lid knob portion 69 corner rib

Claims (5)

A packaging container having a rectangular shape in a plan view, comprising: a container body having a body flange portion provided around the container body;
the body flange portion has a body skirt portion extending downward and a body edging portion extending outward from the body skirt portion;
At the corners of the body edging, body knobs protruding outward are provided,
The lid flange portion includes: a lid skirt portion that extends downward and is externally fitted to the body skirt portion when the lid is closed; a lid rim portion that extends outward from the lid skirt portion and is positioned above the body rim portion when the lid is closed; has
A corner portion of the lid edge portion is provided with a lid knob portion that protrudes outward and is positioned above the main body knob portion when the lid is closed,
In the body skirt portion, body fitting projections projecting outward are not provided at the corner portion, but are provided at positions on both sides of the corner portion in the circumferential direction,
In the lid skirt portion, lid fitting projections that protrude inward and engage with the body fitting projections when the lid is closed are not provided in the corner portion, but are provided at positions on both sides of the corner portion in the circumferential direction,
A packaging container in which, when the lid is closed, the lid grip portion assumes an inclined posture that is inclined upward with respect to the basic posture before the lid is closed. The packaging container according to claim 1, which has at least one of the following configuration a and configuration b.
Configuration a: P2S and P2L are the outer dimensions of the main body fitting projections on both sides of the corner portion in two directions in a plan view of the container main body, and
P2S>Q3S and P2L>Q3L, where Q3S and Q3L are the inner dimensions of the lid in the two directions in plan view at the contact portions of the lid skirt portion with which the main body fitting projections abut on both sides of the corner portion when the lid is closed. .
Configuration b: Q2S and Q2L are the inner dimensions of the lid fitting projections on both sides of the corner portion in the two directions in plan view of the lid, respectively;
P3S>Q2S and P3L>Q2L, where P3S and P3L are the outer dimensions of the container body in the two directions in plan view at the contact portions of the body skirt portion with which the lid fitting protrusions abut on both sides of the corner portion when the lid is closed. be. A packaging container comprising: a container body having a body flange portion surrounding it; and a lid having a lid flange portion surrounding the body flange portion when the lid is closed,
the body flange portion has a body skirt portion extending downward and a body edging portion extending outward from the body skirt portion;
The main body edging part is provided with a main body knob protruding outward,
The lid flange portion includes: a lid skirt portion that extends downward and is externally fitted to the body skirt portion when the lid is closed; a lid rim portion that extends outward from the lid skirt portion and is positioned above the body rim portion when the lid is closed; has
The lid rim is provided with a lid knob that protrudes outward and is positioned above the main body knob when the lid is closed,
The main body fitting projections projecting outward from the main body skirt portion are not provided at positions corresponding to the main body knob portions, but are provided at positions on both sides in the circumferential direction of positions corresponding to the main body knob portions,
In the lid skirt portion, a lid fitting projection that protrudes inward and engages with the body fitting projection when the lid is closed is not provided at a position corresponding to the lid knob portion, but is provided at a position corresponding to the lid knob portion in the circumferential direction. provided at each position on both sides,
A packaging container in which, when the lid is closed, the lid grip portion assumes an inclined posture that is inclined upward with respect to the basic posture before the lid is closed. Both the container body and the lid are circular in plan view,
4. The packaging container according to claim 3, which has at least one of the following configuration c and configuration d.
Configuration c: The outer diameter of the container body at the body fitting protrusion is PD2,
PD2>QD3, where QD3 is the inner diameter of the lid at the abutting portion of the lid skirt portion with which the main body fitting projection abuts when the lid is closed.
Configuration d: The inner diameter of the lid at the lid fitting projection is QD2,
PD3>QD2, where PD3 is the outer diameter of the container body at the abutment portion of the body skirt portion with which the lid fitting projection abuts when the lid is closed. 5. The packaging container according to any one of claims 1 to 4, wherein the container body is made of a foamed sheet, and the lid is made of a non-foamed sheet.

Images