Packaging container

Abstract

To provide a packaging container which enables suppression of illegal opening of a lid body while ensuring detaching easiness of the lid body from a container body.SOLUTION: A packaging container 1 comprises a container body 10 and a lid body 20. The container body 10 includes: a pair of first outer peripheral parts 13 and 13 that are arranged to face each other and slidably support the lid body 10; and a second outer peripheral part 14 that connects ends of the pair of first outer peripheral parts 13 and 13 in an opposite insertion direction. The second outer peripheral part 14 has a protrusion 14B that protrudes downward. The lid body 20 has a body part 21 and an extension piece 22 that extends in an opposite insertion direction from an end of the body part 21 in the opposite insertion direction. The extension piece 22 has: a folding line 22A that extends in a crossing direction crossing the insertion direction of the lid body 20; and a fitting part 22C that is provided between the folding line 22A and a tip of the extension piece 22 to be fittable to the protrusion 14B.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a packaging container, and more particularly to a packaging container comprising a container body having an opening that opens upward and an outer periphery formed around the opening, and a lid body that closes the opening. [Background technology]

[0002] BACKGROUND ART Conventionally, so-called disposable food containers made of synthetic resin, for example, have been known as packaging containers capable of containing contents such as fresh produce and prepared foods sold in stores such as supermarkets and convenience stores.

[0003] An example of this type of container is described in Patent Document 1.

[0004] The packaging container described in Patent Document 1 is made of thin-walled resin and is produced by integral molding. When viewed from a specified side, the adjacent sides are straight and have a non-widening shape, and the container is composed of a container body and a lid body with flanges around the periphery. One of the flanges on a side other than the specified side is tightly inserted into the other flange, and a folded portion that is secondary processed after molding is formed continuous with the flange.

[0005] According to such a packaging container, the lid can be attached and detached simply by sliding it relative to the container body, so that the attachment and detachment work can be easily performed. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Utility Model Registration No. 3102441 Summary of the Invention [Problem to be solved by the invention]

[0007] However, while the packaging container described in Patent Document 1 allows the lid to be easily attached and detached to the container body, there is a higher risk of the lid being opened fraudulently, for example, when the container is on display in a store, which creates the problem that the safety of the product cannot be ensured in such cases.

[0008] In this regard, the packaging container described in Patent Document 1 does not take into consideration the aspect of ensuring the safety of the product, and therefore there is still room for improvement.

[0009] The present invention has been made to solve such problems, and aims to provide a packaging container that can prevent unauthorized opening of the lid while ensuring ease of attachment and detachment of the lid to the container body. [Means for solving the problem]

[0010] The above problem is solved by a packaging container according to the present invention, which is a packaging container comprising a container body having an opening that opens upward and an outer periphery formed around the opening, and a lid body that closes the opening, wherein the outer periphery has a pair of first outer peripheries that are arranged to face each other and slidably support the lid body, and a second outer periphery that allows the lid body to be inserted into the pair of first outer peripheries and connects end portions of the pair of first outer peripheries in a direction opposite to the insertion direction of the lid body, and the lid body comprises a main body portion that is slidably supported by the pair of first outer peripheries, and a second outer periphery that extends in the opposite direction from the end portion of the main body in the opposite direction and closes the opening. and an extending piece portion that is disposed on the second outer peripheral portion when the lid is positioned at a closed position in which the lid is closed and that protrudes in the opposite direction from the end portion of the second outer peripheral portion in the opposite direction, wherein the second outer peripheral portion has a protruding portion that protrudes downward, and the extending piece portion extends in a direction intersecting the insertion direction and has a fold-back line portion that can be folded back so as to wrap around the second outer peripheral portion when the lid is positioned at the closed position, and a fitting portion that is provided between the fold-back line portion and the tip end portion in the opposite direction and can fit with the protruding portion when folded back so as to wrap around the second outer peripheral portion along the fold-back line portion. Note that the container body can be formed by integral molding.

[0011] In the packaging container of the present invention, it is preferable that the lid further includes an easy-to-tear portion formed along the fold-back line portion.

[0012] In this case, it is more preferable that the length in the crossing direction between the fold line and the tip portion is greater than the length in the crossing direction between the fold line portion and the end portion of the extension piece portion in the insertion direction.

[0013] Furthermore, in the invention relating to the packaging container, it is preferable that the outer peripheral portion further has a third outer peripheral portion that connects the ends of the pair of first outer peripheral portions in the insertion direction, and that the third outer peripheral portion has an engaging portion that can be engaged with a second engaging portion provided on the lid body when the lid body is positioned in the closed position.

[0014] Furthermore, in the invention relating to the packaging container, it is preferable that the pair of first outer peripheral portions have a pair of flange portions extending in opposite directions from the opening edge of the opening, a pair of upright portions standing upward from the first flange portions and arranged parallel to each other, and a protrusion protruding from the upper end side of the upright portions toward the opening, and the main body portion is slidably inserted between the first flange portions and the protrusions. [Effects of the Invention]

[0015] As described above, the packaging container according to the present invention has a relatively simple configuration, yet ensures ease of attachment and detachment of the lid to the container body, and reliably prevents unauthorized opening of the lid. Furthermore, with the packaging container according to the present invention, when sliding the lid to remove the contents, the contents can be removed while the lid is partially open, and then the lid can be easily fastened while attached to the container body. The lid may be in the shape of a flat lid or a filling lid. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a plan view showing one embodiment of a packaging container according to the present invention. [Figure 2] FIG. 2 is a front view of the packaging container shown in FIG. [Figure 3] 3 is a right side view of the packaging container shown in FIG. [Figure 4] FIG. 4 is a perspective view of a container body that constitutes a packaging container. [Figure 5] FIG. 5 is a perspective view of a lid that constitutes a packaging container. [Figure 6] Figure 6 is an enlarged cross-sectional view of the main part showing how the mating portion of the lid body fits into the protruding portion of the container body, where (a) shows the state before mating and (b) shows the state after mating. DETAILED DESCRIPTION OF THE INVENTION

[0017] The packaging container of the present invention will be described below based on a preferred embodiment with reference to the drawings. Fig. 1 is a plan view showing one embodiment of the packaging container according to the present invention, Fig. 2 is a front view of the packaging container shown in Fig. 1, Fig. 3 is a right side view of the packaging container shown in Fig. 1, Fig. 4 is a perspective view of a container body constituting the packaging container, and Fig. 6 is an enlarged cross-sectional view of a main part showing how the engagement portion of the lid body fits into the protrusion of the container body.

[0018] <Overall configuration of packaging container 1> As shown in Figures 1 to 3, the packaging container 1 of this embodiment is a container capable of packaging contents such as fresh food, prepared foods, and boxed lunches sold in stores (e.g., supermarkets and convenience stores), and is composed of a container body 10 and a lid body 20. The packaging container 1, the container body 10, and the lid body 20 correspond to the "packaging container," the "container body," and the "lid body" described in the claims, respectively.

[0019] As will be described in detail later, the packaging container 1 according to this embodiment is capable of opening and closing the opening 10A of the container body 10 by sliding the lid 20 relative to the container body 10. For ease of explanation, the direction in which the lid 20 is inserted into the container body 10 will be referred to as the "insertion direction," the opposite direction as the "counter-insertion direction," and the direction intersecting these directions as the "intersecting direction," and the opening 10 side of the container body 10 will be referred to as the "upper side" and the opposite side as the "lower side." Furthermore, the position in which the lid 20 closes the opening 10A will be referred to as the "closing position," and the position in which it opens the opening 10A will be referred to as the "opening position." The above-mentioned insertion direction and anti-insertion direction correspond to the "insertion direction" and "opposite direction" respectively described in the claims.

[0020] (Container body 10) As shown in FIGS. 1 to 4, the container body 10 includes a main body portion 11 and an outer peripheral portion 12, and can be formed, for example, by molding a synthetic resin sheet (sheet molding). The outer peripheral portion 12 corresponds to the "outer peripheral portion" described in the claims.

[0021] Examples of synthetic resin sheets used for the container body 10 include polyester-based resins such as polyethylene terephthalate, olefin-based resins such as polyethylene and polypropylene, and polystyrene-based resins. The synthetic resin sheet may be a single-layer or multi-layer sheet, and may be colored or colorless and transparent. The front and back surfaces of the synthetic resin sheet may be covered with a synthetic resin film. Desired printing may be applied directly to the synthetic resin sheet or to the synthetic resin film. Sheet molding techniques that can be used include known vacuum forming, hot plate pressure forming, vacuum pressure forming, and double-sided vacuum forming.

[0022] (Main body 11) The main body 11 has a bottom wall 11A, a side wall 11B, and an opening 11C. The opening 11C corresponds to the "opening" described in the claims.

[0023] The bottom wall 11A has a placement surface on which the contents are placed and is formed in a substantially rectangular shape. The bottom wall 11A is not limited to being formed in a rectangular shape, but may be formed in other shapes, such as a circular shape or other polygonal shapes.

[0024] Side wall 11B extends continuously upward from the peripheral edge of bottom wall 11A. Opening 11C is an area defined by the upper ends of side wall 11B, and is primarily used for inserting and removing contents.

[0025] (Outer periphery 12) The outer peripheral portion 12 is formed in a substantially frame-like shape (picture frame shape), and has a pair of first outer peripheral portions 13, 13, a second outer peripheral portion 14, and a third outer peripheral portion 15. The first outer peripheral portion 13, the second outer peripheral portion 14, and the third outer peripheral portion 15 correspond to the "first outer peripheral portion," the "second outer peripheral portion," and the "third outer peripheral portion" respectively described in the claims.

[0026] (First outer peripheral portion 13) The first outer peripheral portion 13 is provided contiguous with the opening end of the long side of the opening 11C (the upper end of the long side of the side wall portion 11B), and has a flange portion 13A, a standing portion 13B, and an integrally molded protrusion 13C. The flange portion 13A, the rising portion 13B, and the protrusion 13C correspond to the "flange portion," the "rising portion," and the "protrusion" respectively described in the claims.

[0027] The pair of flanges 13A extend in opposite directions from the upper ends of the long sides of the sidewall 11B. The uprights 13B are erected upward from the tips (outer ends) of the flanges 13A. The protrusions 13C protrude from the upper ends of the uprights 13B toward the opening 11C, and a plurality of them (two in this embodiment) are formed at intervals along the insertion direction. As will be described in more detail later, in this embodiment, the fitting ridges 21C of the lid 20 are inserted between the flanges 13A and the protrusions 13C, allowing the lid 20 to slide on the container body 10.

[0028] 1, 2, and 4 show the case where "two" protrusions 13C are provided on the first outer peripheral portion 13, but the number may be "one" or "three or more." In this case, the number of protrusions 13C provided on one first outer peripheral portion 13 side and the number of protrusions 13C provided on the other first outer peripheral portion 13 side do not need to be the same; for example, the former may have "two" and the latter may have "three." Furthermore, while FIGS. 1, 2, and 4 show the case where the protrusions 13C are formed in a ridge shape, they may be formed in other shapes (e.g., semi-cylindrical) as long as they protrude from the upright portion 13B toward the opening 11C.

[0029] (Second outer periphery 14) The second outer peripheral portion 14 has a flange portion 14A and a protruding portion 14B. The protrusion 14B corresponds to the "protrusion" described in the claims.

[0030] The flange portion 14A extends from the upper end of the side wall portion 11B in the counter-insertion direction and connects the counter-insertion direction ends of the pair of flange portions 13A, 13A to each other. The extension length of the flange portion 14A (the length extending in the counter-insertion direction) is longer at the portion where the protrusion 14B is formed than at the other portion (see FIG. 4, etc.).

[0031] The protrusion 14B has a hollow, generally truncated cone shape and is formed at a predetermined position on the flange 14A so as to protrude downward with its upper surface open. As will be described in detail later, in this embodiment, the fitting portion 22C of the lid 20 is fitted onto the protrusion 14B, thereby enabling them to be fitted together (snap-fit).

[0032] (Third outer periphery 13) The third outer peripheral portion 15 has a flange portion 15A, a rising portion 15B, and a second protruding portion 15C. The second protruding portion 15C corresponds to the "fitted portion" described in the claims.

[0033] The flange portion 15A extends from the upper end of the side wall portion 11B in the insertion direction and connects the ends of the pair of flange portions 13A in the insertion direction to each other. The upright portion 15B stands upright from the tip (outer end) of the flange portion 15A and connects the ends of the upright portions 13B in the insertion direction to each other. The second protrusions 15C protrude upward from the flange portion 15A and are formed in plurality (two in this embodiment) at intervals along the intersecting direction (the extension direction of the flange portions 15A). As will be described in detail later, in this embodiment, the second protrusions 15C are configured to fit into fitting recesses 21D formed in the cover 20 when the cover 20 is in the closed position.

[0034] 1, 2, and 4 show the case where two second protrusions 15C are provided on the third outer peripheral portion 13, but the number may be one or three or more. Also, the second protrusions 15C may be omitted as necessary.

[0035] (lid 20) As shown in FIGS. 1 to 3 and 5, the lid body 20 includes a main body portion 21 and an extension piece portion 22, and can be formed, for example, from a synthetic resin sheet (sheet molding) in the same manner as the container body 10. The main body 21 and the extension piece 22 correspond to the "main body" and the "extension piece" respectively in the claims.

[0036] Examples of synthetic resin sheets used for the lid 20 include polyester-based resins such as polyethylene terephthalate, olefin-based resins such as polyethylene and polypropylene, and polystyrene-based resins such as biaxially oriented polystyrene (OPS: Oriented Polystyrene). The synthetic resin sheet may be a single-layer or multi-layer sheet, and may be colored or colorless and transparent. The front and back surfaces of the synthetic resin sheet may be covered with a synthetic resin film. Desired printing may be applied directly to the synthetic resin sheet or to the synthetic resin film. Desired printing may also be applied to the synthetic resin film. Examples of sheet forming techniques that can be used include known vacuum forming, hot plate pressure forming, vacuum pressure forming, and double-sided vacuum forming.

[0037] (Main body 21) The main body 21 has a top wall 21A, a side wall 21B, a pair of fitting protrusions 21C, 21C, and a second fitting portion 21D. The second fitting portion 21D corresponds to the "second fitting portion" described in the claims.

[0038] The top wall portion 21A constitutes the upper surface of the lid body 20 and is formed in a substantially rectangular shape. The top wall portion 21A may have other shapes, such as a circular shape or other polygonal shapes, depending on the shape of the bottom wall portion 11A.

[0039] The side wall portion 21B hangs down continuously from the outer peripheral edge of the top wall portion 21A. The distance between the pair of side wall portions 21B, 21B constituting the long sides is set to be slightly smaller than the distance between the upright portions 13B, 13B of the container body 10 (see FIG. 4, etc.).

[0040] The fitting protrusion 21C protrudes outward from the side wall 21B and is formed over the entire area in the extension direction of the side wall 21B. The width in the height direction of the fitting protrusion 21C is set to be slightly smaller than the distance between the flange 13A of the container body 10 and the protrusion 13C (see FIG. 4, etc.).

[0041] The second fitting portion 21D according to this embodiment is an inner surface portion of the side wall portion 21A on the insertion direction side, and is configured to ride over the second protrusion 15C and fit with the second protrusion 15C when the lid body 20 is slid toward the closed position. In this embodiment, because it is fixed in this manner, it is possible to prevent the lid body 20 from unintentionally moving in the direction opposite to the insertion direction when the lid body 20 is in the closed position.

[0042] The second fitting portion 21D is not particularly limited in its form as long as it can be fitted with the second protruding portion 15C of the container body 10.

[0043] (Extension piece 22) The extension piece 22 extends from the lower end of the side wall 21B in the counter-insertion direction and has a fold-back line 22A, an easy-to-tear portion 22B, a fitting portion 22C, and a tab 22D. The extension piece 22 is configured to be placed on the flange 14A when the lid 20 is in the closed position. The fold line portion 22A, the easy tear portion 22B, and the fitting portion 22C correspond to the "fold line portion," the "easy tear portion," and the "fitting portion" described in the claims, respectively.

[0044] The fold line portion 22A is a line that allows the extension piece portion 22 to be folded in a mountain fold, and is formed along the crossing direction of the extension piece portion 22. Such a fold line 22A can be formed, for example, by performing linear processing (score processing or perforation processing) on ​​the underside of the extension piece portion 22. For ease of explanation, the region between the fold line portion 22A and the end in the insertion direction will be referred to as "region R1," and the region between the fold line portion 22A and the end in the counter-insertion direction will be referred to as "region R2."

[0045] The fold-back line 22A is formed so as to be positioned in a position slightly offset in the counter-insertion direction from the end of the flange portion 14A when the lid body 20 is in the closed position. In this embodiment, when the lid body 20 is in the closed position, the tip side of the extension piece 22 is moved downward, so that the extension piece 22 can be folded back while covering the periphery of the flange portion 14A (see FIG. 6).

[0046] The extension piece portion 22 is formed so that the length of the region R2 in the crossing direction is longer than the length of the region R1 in the crossing direction, the reason for which will be explained later.

[0047] The easy-to-tear portion 22B is a portion for cutting the extension piece portion 22 at a predetermined position, and is formed along the fold-back line portion 22A. Such easy-to-tear portion 22B can be formed, for example, by perforation.

[0048] The easy-to-tear portion 22B does not necessarily have to be formed along the fold-back line 22A, but can also be formed at another position, for example, at a position slightly shifted in the insertion direction or counter-insertion direction from the fold-back line 22A. Furthermore, the easy-to-tear portion 22B not only functions as a cutting portion for the extension piece portion 22 but also serves to make the extension piece portion 22 easier to bend. Therefore, when the easy-to-tear portion 22B is formed along the fold-back line 22A as in this embodiment, special processing for forming the fold-back line 22A (for example, the above-mentioned scoring processing) can be omitted.

[0049] The fitting portion 22C has a hollow, generally truncated cone shape and is formed to protrude upward from a predetermined position in the region R2 with its bottom surface open. As described above, the fitting portion 22C is configured to be fitted (snap-fit) with the protrusion 14B of the container body 10 by being extrapolated onto the protrusion 14B. Specifically, this fitting can be achieved by folding back the extension piece 22 so as to wrap around the flange portion 14A with the lid 20 in the closed position (see FIGS. 6(a) and 6(b)).

[0050] The gripping portion 22D is formed in the region R2 of the extension piece 22, and is arranged to protrude from the side of the region R1 when the extension piece 22 is folded back along the folding line 22A. That is, in this embodiment, the gripping portion 22D is configured to be grippable when the extension piece 22 is folded back, that is, when the protruding portion 14B of the container body 10 and the fitting portion 22C of the lid 20 are fitted together (see FIG. 1, etc.).

[0051] Therefore, in this embodiment, when the protrusion 14B and the mating portion 22C are mated, by grasping the knob portion 22D and pulling it downward, it is possible to separate the region R2 of the extension piece portion 22 from the region R1 along the easy-to-tear portion 22B and release the mated state.

[0052] <How to use packaging container 1> Next, a method of using the packaging container 1 according to this embodiment will be described with reference to FIGS.

[0053] As shown in FIGS. 4 to 6, the contents can be packaged in the packaging container 1 according to this embodiment in the following procedure. (1) The contents are placed on the bottom wall portion 11A of the container body 10. (2) Next, with the fitting protrusion 21C of the lid 20 inserted between the flange 13A and the protrusion 13C of the container body 10, the lid 20 is slid toward the closed position (insertion direction). (3) Thereafter, when the lid body 20 abuts against the second protrusion 21D of the container body 10, the lid body 20 is pushed in firmly so that it can overcome the second protrusion 21D. This makes it possible to position the lid body 20 in the closed position. In addition, in this state, the second protrusion 21D of the container body 10 and the second fitting portion 21D of the lid body 120 are engaged with each other, so that it is possible to prevent the lid body 20 from unintentionally moving in the direction opposite to the insertion direction. (4) Next, the tip of the extension piece 22 of the lid 20 is moved downward, and the extension piece 22 is folded along the folding line 22A. (5) Thereafter, the extension piece 22 is folded back so as to wrap around the flange portion 14A of the container body 10, and the fitting portion 21D is fitted (snap-fit) to the protrusion 14B of the container body 10 (see FIGS. 6(a) and 6(b)). This locks the lid body 20 to the container body 10, making it possible to reliably prevent unauthorized opening of the lid body 20.

[0054] Next, the procedure for opening the lid 20 will be described. In this embodiment, the lid 20 can be opened in the following procedure. (1) Pull down the tab 22D while gripping it. This separates the region R2 of the extension piece 22 from the region R1 along the easy-to-tear portion 22B, and also releases the engagement between the protrusion 14B of the container body 10 and the engagement portion 21D of the lid 20. (2) Next, the lid 20 is moved in the direction opposite to the insertion direction (toward the open position). This opens the opening 11C of the container body 10, allowing the contents placed inside to be removed.

[0055] In this embodiment, flange portion 14A of container body 10 is formed so that protrusion 14B protrudes downward, resulting in a flat upper surface. Therefore, in this embodiment, after opening lid 20, sliding lid 20 in the direction opposite to insertion can be performed smoothly without problems such as getting caught on protrusion 14B. As a result, even when, for example, only a portion of the contents contained in container body 10 are removed and the remaining contents are stored, lid 10 can be easily attached and detached (opened and closed), and even after removing and removing the contents with lid 20 partially open, the lid can be easily reattached.

[0056] As described above, according to this embodiment, the lid body 20 is slid to the closed position, and then the extension piece portion 22 is folded back so as to wrap around the flange portion 14A, and the fitting portion 21D of the lid body 20 is fitted (snap-fit) into the protrusion portion 14B of the container body 10. That is, in this embodiment, the lid body 20 cannot be slid toward the open position unless the engagement between the protrusion 14B and the engagement portion 21D is released, thereby ensuring ease of attachment and detachment of the lid body 20 to the container body 10 while preventing unauthorized opening of the lid body 20 (preventing tampering).

[0057] In addition, in this embodiment, when releasing the engagement between the protrusion 14B and the engagement portion 21D, this can be done simply by cutting off region R2 of the extension piece portion 22 along the easy-to-tear portion 22B. Therefore, according to this embodiment, the lid 20 can be easily opened.

[0058] Furthermore, in this embodiment, the tab 22D provided in the region R2 of the extension piece 22 is formed so as to protrude in the intersecting direction. Therefore, according to this embodiment, the above-mentioned separation operation can be performed simply by gripping and pulling down the knob portion 22D, so that the above-mentioned operation of opening the lid body 20 can be performed more easily.

[0059] Furthermore, in this embodiment, the second protruding portion 15C of the container body 10 and the second fitting portion 21D of the lid body 20 are configured to fit together when the lid body 20 is in the closed position. Therefore, according to this embodiment, when the cover 10 is in the closed position, it is possible to prevent the cover 10 from unintentionally moving in the direction opposite to the insertion direction.

[0060] Furthermore, in this embodiment, the container body 10 having a pair of first outer peripheral portions 13 (flange portion 13A, standing portion 13B and protrusion 13C) that slidably support the lid body 20 can be integrally molded (sheet molded) using a synthetic resin sheet or the like. Therefore, in this embodiment, compared to technology that makes the lid slidable by bending the flange portion (for example, prior art document (Utility Model Registration No. 3102441)), the manufacturing process can be simplified and the container body can be produced at a lower cost.

[0061] In the above embodiment, the protrusion 14B of the container body 10 and the mating portion 22C of the lid body 20 are each formed in a hollow, approximately truncated cone shape, but as long as they can be mated, they can also be formed in other shapes, for example, a hollow, approximately bullet shape.

[0062] Furthermore, the protrusion 14B and the fitting portion 22C are not limited to being formed in a shape that simply fits together (a hollow truncated cone shape), but can also be formed in a shape that allows them to be locked in a fitted state. Such a configuration can be realized, for example, as shown in Fig. 5, by providing a claw portion 22D at the upper end of the fitting portion 22C and forming a groove portion (not shown) on the inner surface of the protrusion 14B that can engage with the claw portion 22D. With this configuration, it becomes difficult to release the fitted state between the protrusion 14B and the fitting portion 22C, so that unauthorized opening of the lid body 20 can be further prevented.

[0063] Furthermore, the protrusion 14B and the fitting portion 22C may be configured so that when the fitting state between them is released, at least one of the protrusion 14B and the fitting portion 22C is deformed, destroyed, colored, or the like. With this configuration, it is possible to check at a glance whether or not the lid 20 has been tampered with, thereby ensuring the safety of the product.

[0064] Furthermore, from the viewpoint of ensuring the safety of the product, after fitting the protruding portion 14B and the fitting portion 22C together, a known seal or the like can be attached across the regions R1 and R2.

[0065] Furthermore, in the above embodiment, the second protruding portion 15C is formed on the flange portion 15A of the container body 10 as the mating portion into which the second mating portion 21D of the lid 20 is fitted, but instead of this, for example, a groove or hole recessed downward can also be formed. In this case, the second mating portion 21D may be formed into a protruding shape that can be mated with the above-mentioned groove or hole.

[0066] Although the present invention has been described above as an embodiment, the present invention is not limited to the descriptions and drawings that form part of the disclosure of the present invention according to the embodiment. In other words, it should be added that all other embodiments, examples, and operational techniques that are made by those skilled in the art based on the embodiment are naturally included in the scope of the present invention. [Explanation of symbols]

[0067] 1 Packaging container 10 Container body 11 Main body 11A Bottom wall 11B Side wall part 11C opening 12 Outer periphery 13 First outer periphery 13A flange 13B Standing part 13C Protrusion 14 Second outer periphery 14A flange 14B Protrusion 15 Third outer periphery 15A flange 15B Standing section 15C 2nd protrusion (mated part) 20 Lid 21 Main body 21A Ceiling wall section 21B Side wall part 21C Fitting protrusion 21D Second fitting part 22 Extension piece 22A Folded line section 22B Easy cutting part 22C Mating part 22D knob 22E Claw part R1 1st area R2 2nd area

Claims

1. A packaging container comprising a container body having an opening that opens upward and an outer periphery formed around the opening, and a lid that closes the opening, The outer periphery is a pair of first outer peripheral portions arranged to face each other and supporting the lid body in a slidable manner; a second outer periphery that allows the lid body to be inserted into the pair of first outer periphery portions and connects end portions of the pair of first outer periphery portions that are opposite to the insertion direction of the lid body; and The lid body is a main body portion slidably supported on the pair of first outer peripheries; an extension piece portion extending in the opposite direction from the end portion of the main body portion in the opposite direction, being disposed on the second outer circumferential portion in a state where the extension piece portion is positioned at a closing position where the opening is closed, and protruding in the opposite direction from the end portion of the second outer circumferential portion in the opposite direction; Equipped with the second outer periphery has a protruding portion formed to protrude downward, The extension piece portion is a folding line portion that extends in a direction intersecting the insertion direction and that can be folded back so as to wrap around the second outer periphery when the lid body is positioned at the closed position; a fitting portion provided between the fold line portion and the tip portion in the opposite direction, the fitting portion being capable of fitting with the protruding portion in a state where the fitting portion is folded back so as to go around the second outer circumferential portion along the fold line portion; A packaging container having the above structure.

2. The packaging container according to claim 1 , wherein the lid further comprises an easy-to-tear portion formed along the fold-back line portion.

3. 3. The packaging container according to claim 2, wherein a length in the crossing direction between the fold-back line and the tip portion is greater than a length in the crossing direction between the fold-back line portion and an end portion in the insertion direction of the extension piece portion.

4. the outer circumferential portion further includes a third outer circumferential portion connecting the ends of the pair of first outer circumferential portions in the insertion direction to each other, The packaging container according to any one of claims 1 to 3, wherein the third outer peripheral portion has a mating portion that can be mated with a second mating portion provided on the lid body when the lid body is positioned in the closed position.

5. The pair of first outer circumferential portions are a pair of flange portions extending in opposite directions from the opening end of the opening; a pair of upright portions that rise upward from the first flange portion and are arranged parallel to each other; a protrusion protruding from an upper end side of the standing portion toward the opening; and The packaging container according to any one of claims 1 to 3, wherein the main body is slidably inserted between the first flange and the protrusion.

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