JP6302941B2 - Packaging container - Google Patents

Description

  The present invention relates to a packaging container.

  Some packaging containers include a connecting portion that connects side walls for the purpose of suppressing liquid leakage. The connection flap of patent document 1 is an example of such a connection part. The connection flap of patent document 1 is hold | maintained by the double side wall with a frame. The double side wall with a frame is configured such that a connecting flap is sandwiched between the outer end plate and the inner end plate. A fixed plate is provided at the lower end of the inner end plate. By fixing this fixing plate to the inner bottom surface of the container, the inner end plate is fixed so as to hold the connecting flap between it and the outer end plate.

JP 2003-237762 A

  In patent document 1, as above-mentioned, in order to hold | maintain a connection flap, you have to fix a fixing plate to the inner bottom face of a container. A step is formed between the upper surface of the fixing plate and the inner bottom surface of the container. If there is a step in the container, there is a risk that the contents in the container will be caught by the step or that it will be difficult to stably store the contents in the container. Thus, there is a possibility that the structure for suppressing liquid leakage may interfere with the contents.

  An object of the present invention is to provide a packaging container in which the structure for suppressing liquid leakage is unlikely to interfere with the contents.

The packaging container of the present invention constitutes a bottom wall that defines a polygonal inner bottom surface, and an inner side wall provided for each of the sides that defines the inner bottom surface and an inner surface connected to each side thereof. When the sheet is disposed outside the inner side wall and the sheet is unfolded. Linking the corners on the opposite side of the inner bottom surface with respect to the corners so as to occupy one of the inner side walls adjacent to each other across the corner of the inner bottom surface without gaps at least in the vicinity of the corner. And an inner side wall that is connected to the inner side wall at the opposite side of the inner side surface that is connected to the inner bottom surface, outside the inner side wall, and arranged on the inner side wall, and the first outer side wall, A protruding piece which is connected at the side edges of adjacent the first projecting piece which is bent so as to sandwich the interlocking part between the rest of the tip portion, and the first outer side wall The second outer side wall and the lower end edge thereof are connected to each other, and the front end portion and the remaining portion sandwiching the connecting portion and the connecting portion are sandwiched between the second outer side wall and the inner side. A second projecting piece bent so as to be sandwiched between the side wall and the connecting portion is included integrally with the bottom wall and the inner side wall.

  According to the packaging container of the present invention, the connecting portion occupies the corners of the inner bottom surface without any gaps. With this configuration, the liquid in the container is prevented from leaking out of the container from the corner. And the connection part is arrange | positioned outside the inner side wall. Therefore, it is avoided that the structure for suppressing liquid leakage such as the connecting part itself or the structure for holding the connecting part interferes with the contents in the container. On the other hand, since the connecting portion is provided on the outside of the inner side wall, the connecting portion spreads outward unless the configuration for holding the position of the connecting portion is provided, and there is a possibility that the outer shape of the container cannot be held constant.

  Therefore, in the present invention, the outer side wall is provided outside the inner side wall, the first protruding piece is provided at the side edge of the first outer side wall which is one of the outer side walls, and the first protruding piece is provided. , With the cooperation part sandwiched. And while providing a 2nd protrusion piece in the lower end edge of the 2nd outer side wall adjacent to this 1st outer side wall, this 2nd protrusion piece is inserted | pinched with a connection part with the 1st protrusion piece, and an inner side wall It was assumed to be sandwiched between the connecting part and the connection part. Thereby, (1) the second projecting piece is held in a state of being sandwiched between the inner side wall and the connecting portion, and the second outer side wall is held near the inner side wall by (2) (1), (3) The first projecting piece and the connecting portion are also sandwiched and held between the first outer side wall and the second outer side wall, and (4) the first projecting piece is held in a state of sandwiching the connecting portion. Then, the first outer side wall is held in the vicinity of the inner side wall by (5) and (4).

  By the above (1) to (5), the first outer side wall and the second outer side wall are held in the vicinity of the inner side wall, and the first projecting piece, the second projecting piece, and the connecting portion are 1 is sandwiched and held between the outer side wall and the inner side wall. Accordingly, a packaging container is realized in which the structure for suppressing liquid leakage is unlikely to interfere with the contents, and the outer shape of the container is easily maintained.

  Further, in the present invention, the third outer side wall is connected to the second outer side wall and a side edge thereof and is bent so as to be sandwiched between the first protruding piece and the second outer side wall. It is preferable that the protruding piece is integrally included with the bottom wall and the inner side wall. According to this, a 3rd protrusion piece presses down a 1st protrusion piece and the connection part pinched | interposed into this toward an inner side wall. Therefore, the first protruding piece and the connecting portion are further easily held near the inner side wall.

  Moreover, in this invention, it is preferable that the lower end of a pair of said outer side wall which mutually opposed is arrange | positioned below the said bottom wall. According to this, when the container is placed on a table or the like, the bottom wall is separated upward from the upper surface of the table or the like. Therefore, when a liquid such as water adheres to the upper surface of the table or the like, the liquid is prevented from adhering to the bottom wall. Moreover, it becomes difficult to transfer the heat of food stored in the container to the table or the like.

  Moreover, in this invention, it is preferable that the said bottom wall, the said inner side wall, and the said outer side wall comprise the truncated pyramid in which the said bottom wall becomes a smaller one of an upper bottom and a lower bottom. According to this, containers can be stacked on each other.

  In the present invention, the inner side wall and the outer side wall are connected via an intermediate wall extending in a direction intersecting the outer side wall, and 2 along the direction intersecting the opposite side of the inner side wall. A notch of the book is formed in each of the two inner side walls facing each other, and a recess in which the inner side wall and the intermediate wall are depressed toward the outer side wall is formed between the two notches. It is preferable. According to this, a recessed part is formed in two inner side walls and intermediate walls which oppose each other. This recessed part functions as an insertion part for fixing a partition, for example.

  Further, in the present invention, one of the two surfaces corresponding to the front and back of the sheet is a surface having higher waterproof performance than the other surface, and the inner bottom surface and the inner side surface are the waterproof performance. Is preferably a high surface. According to this, since the surface in the container is a highly waterproof surface, it is easy to ensure the effectiveness of suppressing liquid leakage.

It is an exploded perspective view of the carton concerning one embodiment of the present invention. It is a top view of the box main body of FIG. It is a front view of the box main body of FIG. It is a right view of the box main body of FIG. FIG. 2 is a right side view of the box body of FIG. 1, wherein the outer wall is lifted upward from the side wall of the body and a part of the flaps is widened. FIG. 6 is a right side view of the box body of FIG. 1, wherein a part of the flap is bent from the state of FIG. 5. It is a schematic diagram which shows how the outer wall, main body side wall, and flap in the box main body of FIG. 1 overlap. It is an expanded view of the box main body of FIG.

  Hereinafter, a carton 1 according to an embodiment of the present invention will be described with reference to FIGS. The carton 1 is made of a sheet-like material such as cardboard. The carton 1 includes a box body 100 (packaging container) having a general shape of a truncated pyramid as shown in FIG. Hereinafter, the height direction of the carton 1 is the vertical direction. The bottom wall 101 of the box body 100 of the carton 1 has a square shape in plan view as will be described later. A direction perpendicular to the vertical direction and along one side of the bottom wall 101 is defined as A direction, and a direction perpendicular to both the vertical direction and the A direction is defined as B direction. In addition, the up-down direction in this specification does not necessarily mean that the carton 1 is arranged in this direction.

  The carton 1 further includes a lid 2 and a partition 160. The lid 2 has a square shape in plan view. The lid 2 opens downward, and the box body 100 opens upward. The carton 1 is configured by covering the lid 2 with the lid 2 from above in a state where the partition 160 is installed in the box body 100. The carton 1 may be used for food packaging such as a lunch box. In this case, food is stored in the box body 100.

  As shown in FIG. 8, the box main body 100 is composed of an unfolded sheet S that is cut from one sheet and integrated as a whole. The unfolding sheet S is configured such that one of the two surfaces corresponding to the back surface and the front surface has higher waterproof performance than the other. For example, one surface may be laminated, the sheet is composed of multiple layers, and the layer corresponding to one surface is composed of a material with higher waterproof performance than the layer corresponding to the other surface May be. In addition, a member generally called a functional paper having a waterproofing process on one surface may be used. In the present embodiment, it is assumed that the surface shown in FIG. 8 has higher waterproof performance than the surface on the back side. Thereby, since the surface in a container turns into a surface with high waterproof performance, it is easy to ensure the effectiveness of liquid leak suppression. In addition, the waterproof performance of both surfaces may be high, such as waterproofing being performed on both the front and back surfaces.

  As shown in FIGS. 2 to 8, the box body 100 includes a main body bottom wall 101 that defines the inner bottom surface 101 a of the container, main body side walls 102 to 105 (inner side walls) that define the inner side surfaces 102 a to 105 a of the container, and It has outer walls 111 to 114 (outer side walls). Each part of the box body 100 including these is integrally included in one unfolded sheet S as shown in FIG. The inner bottom surface 101a and the inner side surfaces 102a to 105a are included in the surface shown in FIG. The unfolded sheet S is folded at a suitable angle into a valley fold along the alternate long and short dash line in FIG. 8 and into a mountain fold along the broken line, thereby forming the three-dimensional shape of the box body 100 shown in FIGS. Yes.

  The main body bottom wall 101 and the inner bottom surface 101a have a square planar shape. The inner bottom surface 101a is connected to the inner side surfaces 102a to 105a at its four sides. The main body side walls 102 to 105 and the inner side surfaces 102a to 105a have a trapezoidal shape in which a side serving as a boundary with the inner bottom surface 101a is a shorter bottom side. The main body side walls 102 and 103 extend along the A direction and face each other in the B direction. The main body side walls 104 and 105 extend along the B direction and face each other in the A direction. Two adjacent side walls of the main body side walls 102 to 105 are in contact with each other at the end corresponding to the hypotenuse of the trapezoid.

  Between the main body side walls 102-105, the connection parts 151-154 which connect these are formed. As shown in FIG. 8, the connecting portions 151 to 154 have a sheet region opposite to the inner bottom surface 101a with respect to the angles θ1 to θ4 of the inner bottom surface 101a in a state where the box body 100 is expanded (hereinafter referred to as an expanded state). It is an occupying part. The connecting portions 151 to 154 have a generally rectangular quadrangular shape in the deployed state. Cutouts 151a to 154a are formed at corners of the connecting portions 151 to 154 opposite to the corners of the inner bottom surface 101a. The connecting portions 151 and 153 are disposed between the main body side wall 104 and an outer wall 113 (second outer side wall) to be described later in a state where the connecting portions 151 and 153 are folded using the symmetry axis as a fold. The connecting portions 152 and 154 are disposed between the main body side wall 105 and an outer wall 114 (second outer side wall) described later in a state where the connecting portions 152 and 154 are folded with the symmetry axis as a fold. The connecting portions 151 to 154 are disposed in the vicinity of the main body side walls 104 and 105 outside the main body side walls 104 and 105 (see FIG. 5). The “outside” here means the outside viewed from the inner space side of the box body 100 defined by the inner bottom surface 101a and the inner side surfaces 102a to 105a.

  The connecting portions 151 to 154 are at least areas near the angles θ1 to θ4, and occupy a region from one side to the other of two adjacent main body side walls without any gaps. The region corresponds to, for example, the region surrounded by the fan-shaped two-dot chain line in FIG. It is preferable that the said area | region has a height of 5 mm or more along an up-down direction. Thereby, when food is stored in the container, it is possible to effectively prevent the liquid oozed from the food or the liquid such as the seasoning used in the food from leaking out from the corner of the container.

  Each of the outer walls 111 to 114 has a substantially trapezoidal shape. The outer walls 111 to 114 are disposed in the vicinity of the main body side walls 102 to 105 outside the main body side walls 102 to 105. The meaning of “outside” here is the same as above. The outer walls 111 and 112 extend along the A direction, and face the main body side walls 102 and 103 in the B direction. The outer walls 113 and 114 extend along the B direction and face the main body side walls 104 and 105 in the A direction. The outer walls 111 to 114 extend from the positions of the upper ends of the main body side walls 102 to 105 to the vicinity of the bottom wall 101 in the vertical direction. Of these, the outer walls 111 and 112 extend to a position slightly above the bottom wall 101. On the other hand, the outer walls 113 and 114 extend to positions below the lower ends of the outer walls 111 and 112 and the bottom wall 101. The outer walls 111 to 114 are adjacent to each other as indicated by “outer wall 111 ⇔ outer wall 113 ⇔ outer wall 112 ⇔ outer wall 114 ⇔ outer wall 111”. “⇔” indicates that the outer walls on both sides are adjacent to each other.

  The outer walls 111 to 114 are connected to the main body side walls 102 to 105 through intermediate walls 121 to 124 extending in a strip shape between the main body side walls 102 to 105 and the outer walls 111 to 114. The intermediate walls 121 to 124 extend from the upper ends of the outer walls 111 to 114 to the upper ends of the main body side walls 102 to 105 along a direction perpendicular to the vertical direction (a direction intersecting the outer walls 111 to 114). In other words, the outer walls 111 to 114 have the main body side wall 102 on the longer bottom side of the trapezoid on the inner side surfaces 102a to 105a (for example, the opposite side of the side connected to the inner bottom surface 101a on the inner side surface 102a) via the intermediate walls 121 to 124. It is connected to ~ 105. Since the outer walls 111 to 114 are connected to the main body side walls 102 to 105 through the intermediate walls 121 to 124, the outer walls 111 to 114 and the main body side walls 102 to 105 are separated by the width of the intermediate walls 121 to 124. become. Thereby, the accommodation space of the connection parts 151-154 is formed between the main body side wall 104 and the outer wall 113 and between the main body side wall 105 and the outer wall 114, respectively.

  The entire main body bottom wall 101, main body side walls 102 to 105, and outer walls 111 to 114 have a truncated pyramid shape. In this truncated pyramid, the main body bottom wall 101 is the smaller one of the upper and lower bases.

  As shown in FIGS. 5, 6, and 8, flaps are formed on each of the outer walls 111 to 114. The flap is connected to each of the outer walls 111 to 114 at the side edge or the lower edge of the outer walls 111 to 114. In addition, the lower end edge of an outer wall means the edge arrange | positioned below among the both end edges regarding an up-down direction. Further, the side edge of the outer wall means one of both end edges in the horizontal direction. Hereinafter, two side edges in one outer wall may be described as both side edges.

  Flaps 141 and 142 (first projecting pieces) are formed on both side edges of the outer wall 111 (first outer side wall), and flaps 143 and 144 (first protrusions) are formed on both side edges of the outer wall 112 (first outer side wall). Projecting piece). Flaps 161 and 162 (third projecting pieces) are formed on both side edges of the outer wall 113, and flaps 163 and 164 (third projecting pieces) are formed on both side edges of the outer wall 114. A flap 165 is formed at the lower end edge of the outer wall 111, and a flap 166 is formed at the lower end edge of the outer wall 112. A flap 145 (second projecting piece) is formed at the lower end edge of the outer wall 113, and a flap 146 (second projecting piece) is formed at the lower end edge of the outer wall 114.

  The flaps 141 to 144 have an unequal polygonal schematic shape. As shown in FIG. 8, the flaps 141 and 142 protrude from both side edges of the outer wall 111 in both directions with respect to the longitudinal direction of the outer wall 111 in the deployed state. The flaps 143 and 144 protrude in both directions with respect to the longitudinal direction of the outer wall 112 from both side edges of the outer wall 112 in the deployed state. The flap 141 is bent so as to sandwich the connecting portion 151. Similarly, the flap 142 is bent so as to sandwich the linkage portion 152, the flap 143 is sandwiched between the linkage portion 153, and the flap 144 is sandwiched between the linkage portions 154.

  As an example, the process of bending the flaps 142 and 144 so as to sandwich the connecting portions 152 and 154 is as follows. The flaps 142 and 144 are folded in the directions indicated by the arrows α1 and α2 from the state shown in FIG. 5 where the flaps 142 and 144 are deployed, and the leading ends 142a and 144a of the flaps 142 and 144 are indicated by the arrows α3 and α4 in FIG. Fold it in. Thereby, the flaps 142 and 144 are in a state of sandwiching the connecting portions 152 and 154.

  The flaps 161 to 164 have an unequal square shape. As shown in FIG. 8, the flaps 161 and 162 protrude in both directions with respect to the longitudinal direction of the outer wall 113 from both side edges of the outer wall 113 in the deployed state. The flaps 163 and 164 protrude in both directions with respect to the longitudinal direction of the outer wall 114 from both side edges of the outer wall 114 in the deployed state. The flap 161 is bent so as to be sandwiched between the flap 143 and the outer wall 113. Similarly, the flap 162 is folded between the flap 141 and the outer wall 113, the flap 163 is folded between the flap 141 and the outer wall 114, and the flap 164 is folded between the flap 144 and the outer wall 114. ing.

  As an example, the process of bending the flaps 163 and 164 to be sandwiched between the outer wall 114 and the flaps 142 and 144 is as follows. From the state shown in FIG. 6 in which the flaps 163 and 164 are bent to a position close to the outer wall 114, the front end portion 142a of the flap 142 is bent in the α4 direction, and then the outer wall 114 is bent in the β direction. As a result, the flaps 163 and 164 are sandwiched between the outer wall 114 and the flaps 142 and 144.

  The flaps 145 and 146 have a trapezoidal approximate shape in which the corners of the tips are formed in an R shape. As shown in FIG. 8, the flap 145 protrudes from the lower end edge of the outer wall 113 in the short direction of the outer wall 113 in the deployed state. The flap 145 is bent so that the connecting portions 151 and 153 are sandwiched between the flaps 141, 143, 161 and 162 and the outer side wall 113. The flap 146 protrudes from the lower end edge of the outer wall 114 in the short direction of the outer wall 114 in the deployed state. The flap 146 is bent so that the connecting portions 152 and 154 are sandwiched between the flaps 142, 144, 163, and 164 and the outer side wall 114.

  As an example, the process of bending the flap 146 so that the connecting portions 152 and 154 are sandwiched between the flaps 142, 144, 163, and 164 and the outer side wall 114 is as follows. From the state shown in FIG. 6, after the front end portion 142a of the flap 142 is bent in the α4 direction, the outer wall 114 is bent in the β direction. As a result, the flaps 163 and 164 are sandwiched between the outer wall 114 and the flaps 142 and 144. Further, the flap 146 is inserted between the front end portions 142 a and 144 a of the flaps 142 and 144 and the inner side wall 105 while being bent in the γ direction of FIG. 4. Accordingly, the flap 146 is in a state where the connecting portions 152 and 154 are sandwiched between the flaps 142, 144, 163, and 164 and the outer side wall 114.

  The flaps 165 and 166 have a trapezoidal approximate shape in which the corners of the tips are formed in an R shape. As shown in FIG. 8, the flap 165 protrudes from the lower end edge of the outer wall 111 in the short direction of the outer wall 111 in the unfolded state. The flap 165 is bent so as to be sandwiched between the outer wall 111 and the main body side wall 102 (see FIG. 3). The flap 166 protrudes from the lower end edge of the outer wall 112 in the short direction of the outer wall 112 in the deployed state. The flap 166 is bent so as to be sandwiched between the outer wall 112 and the main body side wall 103.

  With the above configuration, as shown in an example in FIG. 7, each flap and each connecting portion is located between the outer walls 113 and 114 and the main body side walls 104 and 105, (i) flaps 161 to 164, (ii) flaps 141 to 144, (iii) the connecting portions 151 to 154, (iv) the tip portions 141a to 144a of the flaps 141 to 144, and (v) the flaps 145 and 146 are sandwiched in this order.

  As a result, the following (1) to (5) are established. (1) The flaps 145 and 146 are held in a state of being sandwiched between the main body side walls 104 and 105 and the connecting portions 151 to 154. (2) The outer walls 113 and 114 are in the vicinity of the main body side walls 104 and 105 by (1). (3) The flaps 141 to 144 and the connecting portions 151 to 154 are also sandwiched and held between the side walls 104 and 105 and the outer walls 113 and 114, and (4) the flaps 141 to 144 are connected to the connecting portions 151 to 151. The outer walls 111 and 112 are held near the main body side walls 102 and 103 by (5) and (4).

  Cuts 131 and 132 are formed in the intermediate wall 121 and the main body side wall 102 so as to straddle these boundaries. The cuts 131 and 132 are along the direction perpendicular to the longer base of the trapezoid on the inner surface 102a. A portion of the intermediate wall 121 and the main body side wall 102 between the cuts 131 and 132 is depressed toward the outer wall 111, thereby forming a recess 102b (see FIGS. 1 and 2). In addition, cuts 133 and 134 are formed in the intermediate wall 122 and the main body side wall 103 so as to straddle these boundaries. The notches 133 and 134 are along the direction orthogonal to the longer base of the trapezoid on the inner surface 103a. A portion of the intermediate wall 122 and the main body side wall 103 between the notches 133 and 134 is recessed toward the outer wall 112, thereby forming a recess 103b (see FIGS. 1 and 2). A partition 160 is inserted into the recesses 102b and 103b. As shown in FIG. 1, the partition 160 is a plate-like member having projecting portions 161 and 162 projecting on both sides in a direction corresponding to the B direction of the carton 1. The partition 160 is fixed to the box body 100 by the protrusions 161 and 162 being inserted into the recesses 102b and 103b.

  According to this embodiment described above, the structure for suppressing liquid leakage, such as the connecting portions 151 to 154 for suppressing liquid leakage and the flaps 141 to 146 for holding the connecting portions 151 to 154, is a box body 100 in which food is stored. It is arranged outside the internal space. Therefore, it is avoided that the structure for suppressing liquid leakage obstructs the contents. On the other hand, since the connecting portions 151 to 154 are provided outside the main body side walls 102 to 105, the connecting portions 151 to 154 spread outward and the outer shape of the container is increased unless a configuration for holding the positions of the connecting portions 151 to 154 is provided. There is a risk that it cannot be held constant.

  In contrast, the present embodiment is configured to satisfy the above (1) to (5). Thereby, the outer walls 111 to 114 are held in the vicinity of the main body side walls 102 to 105, and the flaps 141 to 146 and 161 to 164 and the connecting portions 151 to 154 are provided between the outer walls 113 and 114 and the main body side walls 104 and 105. Is held between. Accordingly, a packaging container is realized in which such a structure for suppressing liquid leakage is unlikely to hinder the contents, and the outer shape of the container is easily maintained.

  In addition, flaps 161 to 164 sandwiched between the outer walls 113 and 114 and the main body side walls 104 and 105 are provided. Accordingly, the flaps 161 to 164 exhibit a function of pressing down the flaps 141 to 144 and the connecting portions 151 to 154 sandwiched therebetween toward the main body side walls 104 and 105. Therefore, the flaps 141 to 144 and the connecting portions 151 to 154 are further easily held in the vicinity of the main body side walls 104 and 105. Note that the flaps 161 to 164 may not be provided.

  Further, the outer walls 113 and 114 extend to a position below the bottom wall 101. Therefore, when the container is placed on a table or the like, the bottom wall 101 is separated upward from the upper surface of the table or the like. Therefore, when a liquid such as water adheres to the upper surface of the table or the like, the liquid is prevented from adhering to the bottom wall 101. Such a feature is particularly effective when the upper surface (inner bottom surface 101a) of the bottom wall 101 is configured to have higher waterproof performance than the lower surface. Further, since the bottom wall 101 does not come into contact with the upper surface of the table or the like, it becomes difficult to transfer heat of food or the like stored in the container to the table or the like. The outer walls 113 and 114 extend to positions below the lower ends of the outer walls 111 and 112. Therefore, when the container is placed on a table or the like, the lower ends of the outer walls 111 and 112 are also separated upward from the upper surface of the table or the like. Therefore, a gap is generated between the lower ends of the outer walls 111 and 112 and the upper surface of the table or the like. Since it becomes easy to put a finger or the like into the gap, it is easy to lift the container placed on the table or the like from the table or the like. Note that the lower ends of the outer walls 113 and 114 and the lower ends of the outer walls 111 and 112 may be disposed at the same position. Further, any of the lower ends of the outer walls 111 to 114 may be disposed at the same position as or above the bottom wall 101.

  The main body bottom wall 101, the main body side walls 102 to 105, and the outer walls 111 to 114 as a whole have a truncated pyramid shape. Thereby, the box main bodies 100 are mutually connected by fitting the part of the truncated pyramid in the other box main body 100 into the box main body 100 from the opening constituted by the upper ends of the main body side walls 102 to 105 in the one box main body 100. Can be stacked.

(Modification)
Hereinafter, modifications of the above-described embodiment will be described. For example, in the above-described embodiment, the outer walls 111 to 114 are held in the vicinity of the main body side walls 104 and 105 by inserting the flaps 145 and 146 without using an adhesive or glue. However, the insertion of the flaps 145 and 146 and the bonding with an adhesive or glue may be used in combination.

  In the above-described embodiment, the main body bottom wall 101 and the inner bottom surface 101a have a rectangular shape, but may have other polygonal shapes such as a triangle, a pentagon, and a hexagon.

  Moreover, in the above-mentioned embodiment, the outer walls 111-114 and the main body side walls 102-105 are connected via the intermediate walls 121-124. However, the intermediate walls 121 to 124 may not be provided, and the outer walls 111 to 114 and the main body side walls 102 to 105 may be directly connected. In this case, in order to form an accommodation space for the connecting portions 151 to 154 between the outer walls 111 to 114 and the main body side walls 102 to 105, it is necessary to tilt the outer walls 111 to 114 somewhat obliquely with respect to the main body side walls 102 to 105. Arise.

1 carton, 2 lids, 100 box main body 101 main body bottom wall, 101a inner bottom surface, 102-105 main body side wall 102b concave portion, 103b concave portion 102a-105a inner side surface, 111-114 outer wall, 121-124 intermediate wall 141-146.161 164 flap, 151-154 connecting part

Claims (6)

The bottom wall bent so as to constitute a bottom wall defining a polygonal inner bottom surface and an inner side wall provided for each of the sides defining the inner bottom surface and an inner surface connected to each side of the inner bottom surface And one sheet including the inner side wall integrally,
The one sheet is
When the sheet is deployed outside the inner side wall and the sheet is unfolded, it occupies from one side to the other of the two inner side walls adjacent to each other across the corner of the inner bottom surface without a gap at least in the vicinity of the corner. As described above, a connecting portion connected to the corner on the side opposite to the inner bottom surface,
The inner side wall is connected to the inner side wall at the opposite side to the inner side surface connected to the inner bottom surface, outside the inner side wall, and the outer side wall disposed for each inner side wall;
A first projecting piece connected at the first outer wall and a side edge thereof, the first projecting piece bent so as to sandwich the connecting part between its tip and the remaining part ;
The second outer side wall adjacent to the first outer side wall and the lower end edge thereof are connected to each other, and the front end part and the remaining part and the connecting part sandwiching the connecting part are connected to the second outer side. A second protruding piece that is sandwiched between the side wall and bent so as to be sandwiched between the inner side wall and the connecting portion,
A packaging container comprising the bottom wall and the inner side wall integrally.   The bottom wall includes a third projecting piece that is connected to the second outer side wall and a side edge thereof and is bent so as to be sandwiched between the first projecting piece and the second outer side wall. The packaging container according to claim 1, wherein the packaging container is integrated with the inner side wall.   The packaging container according to claim 1 or 2, wherein lower ends of the pair of outer side walls facing each other are disposed below the bottom wall.   The said bottom wall, the said inner side wall, and the said outer side wall comprise the pyramid frustum whose said bottom wall becomes a smaller one of the area of an upper bottom and a lower bottom. Packaging container according to item. The inner side wall and the outer side wall are connected via an intermediate wall extending in a direction intersecting the outer side wall;
Two cuts along the direction intersecting the opposite side of the inner side wall are formed in each of the two inner side walls facing each other,
The packaging according to any one of claims 1 to 4, wherein a concave portion in which the inner side wall and the intermediate wall are depressed toward the outer side wall is formed between the two cuts. Container. One surface of the two surfaces corresponding to the front and back of the sheet is a surface having higher waterproof performance than the other surface,
The packaging container according to claim 1, wherein the inner bottom surface and the inner side surface are surfaces having high waterproof performance.

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