JP2008074483A - Foamed synthetic resin container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foamed synthetic resin container in which cold air inlet ports are formed when the containers themselves are stacked up and in which a cargo can be prevented from being collapsed when the container and its lid are separately packaged. <P>SOLUTION: This foamed synthetic resin container is constituted in such a manner that the upper end and side walls of the container or the like are cut and cold air inlet ports are formed when the containers themselves are stacked up, and characterized in that protrusions at the lid are formed in a line symmetry or a point symmetry manner at a length shorter than a half of lengths of opposing sides, an inner fitting part and an outer fitting part having different protrusion lengths from the lower surface of the lid are formed at least in the protrusions of a lower part of the peripheral edge of the lid while the central part of the side wall in this wall thickness is applied as an interface, and at the same time the protrusion lengths of these inner and outer fitting portions are made different at extremity ends and both sides of the protrusions and both the inner and outer fitting portions corresponding to the inner and outer fitting portions are formed at upper edges of the side walls of the container body. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a foamed synthetic resin container, and more particularly to a foamed synthetic resin container suitable for precooling by adding agricultural products such as vegetables.

  Conventionally, in order to pre-cool by putting agricultural products such as vegetables, as a foamed synthetic resin container configured so that a cold air inlet is formed when the container upper end side wall is cut and the containers are stacked, for example, Patent Document The techniques disclosed in 1-2 are proposed.

  Patent Document 1 includes a container body made of a synthetic resin foam and a lid. The container body has an appropriate number of notches formed on the upper edges of the four side walls, and the lid has the notches formed at the lower peripheral edge. And the bottom of the notch of the container body is located on the inner side of the side wall. There is disclosed a cold storage container characterized in that the edge is an inclined surface that is lower than the outer edge of the side wall.

Patent Document 2 includes a lid and a container made of foamed synthetic resin, and the lid includes at least two stepped tongues extending substantially vertically at an end thereof, and the container includes There is disclosed a cold-reserving container characterized in that a concave vent hole fitted to the side wall of the tongue piece is provided on the side wall, and a stepped tongue piece storage portion is provided on the outer surface of the tongue piece.
JP 2005-206213 A Japanese Utility Model Publication 3-33660

However, the above-described conventional technique has the following problems.
The cold storage container disclosed in Patent Document 1 is easy to carry out the bagging work by fitting the container main bodies when the packing work is performed after molding, but the lids do not fit together and are packed in an overlapping manner. At this time, there is a problem that the bag collapse easily occurs and it is difficult to pack the bag.

  The container disclosed in Patent Document 2 can overlap the lids, but if the thickness of part of the lid is not extremely thin, the lids do not overlap as shown in the same document, If the thickness of a part of the lid is reduced, the strength of the lid is lowered, and there is a problem that cracks and chips occur during transportation.

  The present invention has been made in view of the above circumstances, and in a foamed synthetic resin container configured so that a cold air inlet is formed when the container upper end side wall or the like is cut and the containers are stacked, the container and the lid are separately provided. An object of the present invention is to provide a foamed synthetic resin container capable of preventing collapse of a package when packing.

  In order to achieve the above-mentioned object, the present invention comprises a container main body and a lid, which are made of a synthetic resin foam and have a substantially quadrangular shape in plan view, and the container main body is at least a pair of opposite sides of the upper side edges of the four sides And the lid has a convex portion corresponding to the notch at the lower peripheral edge, and the inside of the container body is substantially shielded from the outside air with the lid on. The convex portion of the lid is arranged so that the length of half or less of the length of the opposite sides is line symmetric or point symmetric, and at least the convex portion at the lower peripheral edge of the lid has a wall thickness of the side wall. An inner fitting portion and an outer fitting portion having different protruding lengths from the bottom surface of the lid are formed with the central portion in the thickness direction as a boundary, and the protruding lengths of the inner fitting portion and the outer fitting portion are At the top edge of the side wall of the container body, Providing a foamed synthetic resin container, characterized in that the inner fitting portion corresponding to the serial inner fitting portion and the outer fitting portion and the outer fitting portion is formed.

  In the foamed synthetic resin container of the present invention, the lid has a convex portion in one side facing region of a pair of sides opposed to each other among the lower portions of the four side walls, and the inner fitting portion is an outer fitting at the tip portion of the convex portion. The protruding length is formed longer than the joint, the outer fitting portion is formed longer than the inner fitting portion at the lower side wall other than the tip of the convex portion, and the upper edge of the side wall of the container body, It is preferable that a notch, an inner fitting portion, and an outer fitting portion corresponding to the convex portion, the inner fitting portion, and the outer fitting portion of the lid are formed.

  In the foamed synthetic resin container of the present invention, the lid has a convex part on one side of each of the four side wall lower parts, and the inner fitting part has a longer projecting length than the outer fitting part at the tip part of the convex part. Formed at the lower portion of the side wall other than the tip of the convex portion, the outer fitting portion is formed to be longer than the inner fitting portion, and at the upper edge of the side wall of the container body, the convex portion of the lid and the inner fitting portion are fitted. It is preferable that a notch, an inner fitting portion, and an outer fitting portion corresponding to the joint portion and the outer fitting portion are formed.

  In the foamed synthetic resin container of the present invention, when the lid is overlaid on each of a pair of opposing sides of the lower part of the four side walls, a plurality of convex portions are overlapped so that the two lids face each other. The projections of the lids are arranged opposite to each other so that the projections are alternately arranged, and at the tip of the projection, the inner fitting portion is formed longer than the outer fitting portion, and the tip of the projection The outer fitting portion has a longer protruding length than the inner fitting portion at the lower side wall other than the inner fitting portion, and the convex portion of the lid, the inner fitting portion, and the outer fitting portion are formed on the upper edge of the side wall of the container body. It is preferable that a notch, an inner fitting portion, and an outer fitting portion corresponding to the above are formed.

  In the foamed synthetic resin container of the present invention, the lid has a first convex portion in a one-side opposed region of a pair of opposite sides of the four side wall lower portions, and the first convex portion in a central portion of the remaining pair of sides. A second protrusion having a protrusion height substantially half that of the first protrusion, and the inner fitting portion is an outer fitting portion at one of the tip of the first protrusion and the two second protrusions. A protrusion length longer than the front end portion of the first convex portion and the lower end portion of the side wall other than one of the two second convex portions and the other front end portion of the second convex portion. The joint portion is formed to have a longer protruding length than the inner fitting portion, and a notch and inner fitting corresponding to the convex portion of the lid, the inner fitting portion, and the outer fitting portion are formed on the upper edge of the side wall of the container body. It is preferable that a joint portion and an outer fitting portion are formed.

  The foamed synthetic resin container of the present invention is a foamed synthetic resin container having a notch that becomes a cold air inlet when the container body is stacked, and the lid has a convex part corresponding to the notch, and the convex part of the lid is opposed to The length of the side to be half or less is arranged so that it is line-symmetrical or point-symmetrical, and at least the convex part at the lower periphery of the lid is from the lower surface of the lid, with the central part in the thickness direction of the side wall as the boundary. An inner fitting portion and an outer fitting portion having different protruding lengths are formed, and the protruding lengths of the inner fitting portion and the outer fitting portion are different between the tip portion and both side portions of the convex portion. In addition, since the inner fitting portion and the outer fitting portion corresponding to the inner fitting portion and the outer fitting portion are formed on the upper edge of the side wall of the container body, the lid manufactured by the molding manufacturer is packed. In doing so, by overlapping the two lids with their backs facing each other, Since the convex portions of the respective lids are aligned, and the inner fitting portion and the outer fitting portion at the tip end portion of the convex portion are fitted with the corresponding inner fitting portion and outer fitting portion of the corresponding lid, The lids can be stacked in a stable state, and by stacking the two stacked lid units in multiple stages, a large number of lids can be stacked and packed easily without causing load collapse.

[First Embodiment]
1-5 is a figure which shows 1st Embodiment of the foamed synthetic resin container of this invention, FIG. 1 is an assembly perspective view of the foamed synthetic resin container 10, FIG. 2 is a perspective view which shows the structure of the back surface of the lid | cover 12. FIG. 3 is a perspective view showing a state in which the container body 11 is stacked, FIG. 4 is a perspective view showing a state in which two lids 12 are overlapped, and FIG. 5 is a cross-sectional view showing a state in which a large number of lids are stacked. . In these drawings, reference numeral 10 is a foamed synthetic resin container, 11 is a container body, 12 is a lid, 13 is a notch, 14 is a convex portion, 15 is an inner fitting portion of the lid, 16 is an outer fitting portion of the lid, 17 Is an inner fitting portion of the container body, and 18 is an outer fitting portion of the container body.

  The foamed synthetic resin container 10 of the present embodiment is composed of a container body 11 and a lid 12 that are substantially quadrilateral in plan view made of a synthetic resin foam, and the container body 11 is a pair of opposing upper side edges of the four sides. A state in which the side has a notch 13 and the lid 12 has a convex portion 14 corresponding to the notch 13 at the lower peripheral edge, and the inside of the container body 11 is substantially shielded from the outside air with the lid 12 It becomes the structure which becomes.

Examples of the synthetic resin foam constituting the foamed synthetic resin container 10 of the present embodiment include polystyrene resin foams such as polystyrene resins and copolymers based on styrene, polyolefin resin foams, polyester resin foams, and the like. Can be illustrated. Although the container body 11 and the lid 12 may be made of different materials, the container body 11 and the lid 12 are made of the same synthetic resin foam, in particular, a polystyrene resin foam mainly composed of homopolystyrene polymer, or a polystyrene resin foam. It is preferable that it is manufactured using. When the foamed synthetic resin container 10 is formed using a polystyrene resin foam, the density of the synthetic resin foam is preferably in the range of 0.014 g / cm ^{3 to} 0.033 g / cm ³ . When the density is less than the above range, the side wall surface of the container is likely to be deformed during vacuum precooling, or the coolability of the container may be deteriorated. When the density exceeds the above range, the weight of the container becomes heavy and the handling property may be lowered.

  Further, the manufacturing method of the container body 11 and the lid 12 is not particularly limited, but the expandable resin particles are heated to be pre-expanded particles, and the pre-expanded particles are filled into the cavities of a mold having a cavity having a desired shape. Then, it is preferable to produce by an in-mold foam molding method in which the pre-foamed particles are heated in a mold to perform in-mold foam molding, and the molded body is released after cooling. The molding apparatus, molding conditions, and the like in the in-mold foam molding method can be performed in the same manner as in the conventionally known in-mold foam molding method, depending on the resin material to be used.

In the foamed synthetic resin container 10 of the present embodiment, the lid 12 has a convex portion 14 in one side facing region of a pair of sides facing each other among the lower portions of the side walls of the four sides. The joint portion 15 is formed to have a longer projection length than the outer fitting portion 16, and the outer fitting portion 16 is formed to have a longer projection length than the inner fitting portion 15 at the side wall lower portion other than the tip portion of the convex portion 14. And the notch 13, the inner fitting part 17, and the outer fitting part 18 corresponding to the convex part 14, the inner fitting part 15, and the outer fitting part 16 of the lid 12 are formed on the upper edge of the side wall of the container body 11. It is characterized by being formed.
In the present invention, the “projection length” means the difference between the back main surface of the lid 12 and the height of the inner fitting portion 15 or the outer fitting portion 16 at each portion. Therefore, the protrusion length may be zero or negative at a portion other than the convex portion 14.

  In addition, although not shown, a fitting portion is formed on the bottom peripheral edge of the container main body 11 to prevent misalignment and collapse of the load when overlapping with another foamed synthetic resin container 10 or the container main body 11. It is preferable that

  In the foamed synthetic resin container 10 of the present embodiment, when the container body 11 and the lid 12 are separately molded and individually packed, the container body 11 is formed by stacking a plurality of container bodies 11 as shown in FIG. Packed in state. In addition, when putting the contents such as vegetables into the container body 11 and pre-cooling, the notch 13 provided on the side wall of the container body 11 becomes a cold air inlet, and the contents such as vegetables are put into the container body 11, When this is stored in the pre-cooling chamber, the cold air outside the container flows smoothly into the container through the cold air inlet, so that the cooling efficiency is high.

  On the other hand, as shown in FIG. 4, when the lid 12 manufactured by a molding maker is packed, the lids 12 are overlapped with the back surfaces of the lids 12 facing each other. Since the convex portions 14 are arranged and the inner fitting portion 15 and the outer fitting portion 16 at the tip end portion of the convex portion 14 are fitted with the corresponding inner fitting portion 15 and outer fitting portion 16 of the corresponding lid, The lid 12 can be overlaid in a stable state. Also, as shown in FIG. 5, by stacking two overlapping lid units in multiple stages, a large number of lids 12 can be stacked and packed without causing load collapse.

(Example of conventional products)
6 to 8 are diagrams illustrating a conventional foamed synthetic resin container for comparison with the product of the present invention, FIG. 6 is a perspective view of the foamed synthetic resin container 1, and FIG. 7 is two lids 3. FIG. 8 is a cross-sectional view showing a state in which a large number of lids 3 are stacked. In these drawings, reference numeral 1 is a foamed synthetic resin container, 2 is a container body, 3 is a lid, 4 is a notch, and 5 is a convex portion.

  The conventional foamed synthetic resin container 1 is made of a synthetic resin foam, like the foamed synthetic resin container 10 of the first embodiment described above, and comprises a container body 2 and a lid 3 that form a substantially quadrilateral shape in plan view. The container body 2 has a notch 4 on a pair of opposite sides of the upper side edges of the four side walls, and the lid 3 has a convex portion 5 corresponding to the notch 4 at the lower peripheral edge. And the convex part 4 are different in that they are formed in the central part of the long side.

  In this conventional product, as shown in FIG. 7, when the two lids 3 are stacked with their bottoms facing each other, the convex portions 5 are at the same position, so as shown in FIGS. 7 and 8, The two lids 3 must be superposed with their positions shifted laterally. In such a state, the fitting by the inner fitting portion and the outer fitting portion cannot be performed, and the lid 3 on the side easily shifts laterally. As a result, as shown in FIG. 8, when a unit in which two lids 3 are stacked with their bottoms facing each other is stacked in a multistage manner, cargo collapse is likely to occur, which may hinder packing work.

[Second Embodiment]
FIGS. 9 to 12 are views showing a second embodiment of the foamed synthetic resin container of the present invention, FIG. 9 is an assembled perspective view of the foamed synthetic resin container 20, and FIG. 10 is a perspective view showing the structure of the back surface of the lid 22. 11 is a perspective view showing a state in which two lids 22 are overlapped, and FIG. 12 is a perspective view showing a state in which a plurality of container main bodies 21 are stacked. In these drawings, reference numeral 20 is a foamed synthetic resin container, 21 is a container body, 22 is a lid, 23 is a notch, 24 is a convex portion, 25 is an inner fitting portion of the lid, 26 is an outer fitting portion of the lid, 27 Is an inner fitting portion of the container body, and 28 is an outer fitting portion of the container body.

  The foamed synthetic resin container 20 of the present embodiment is composed of a container body 21 and a lid 22 that are substantially quadrilateral in a plan view made of a synthetic resin foam, and the container body 21 is formed on one side of each of the upper edges of the four side walls. The lid 22 has a protrusion 24 corresponding to the notch 23 at the lower peripheral edge, and the inside of the container body 21 is substantially shielded from the outside air with the lid 22 in place. It has a structure.

  The foamed synthetic resin container 20 of the present embodiment can be configured using the same resin material as the foamed synthetic resin container 10 of the first embodiment described above, and can be manufactured by the same manufacturing method.

  In the foamed synthetic resin container 20 of the present embodiment, the lid 22 has a convex portion 24 on one side of each of the four side wall lower portions, and the inner fitting portion 25 is the outer fitting portion 26 at the tip of the convex portion 24. The outer fitting portion 26 is formed longer than the inner fitting portion 25 at the lower portion of the side wall other than the tip portion of the convex portion 24, and the upper edge of the side wall of the container body 21 is formed. Further, a notch 23, an inner fitting portion 27, and an outer fitting portion 28 corresponding to the convex portion 24, the inner fitting portion 25, and the outer fitting portion 26 of the lid 22 are formed. .

  In the foamed synthetic resin container 20 of the present embodiment, when the container body 21 and the lid 22 are separately formed and individually packed, the container body 21 is formed by stacking a plurality of container bodies 21 as shown in FIG. Packed in state. When contents such as vegetables are put into the container body 21 and precooled, the notches 23 provided on the four side walls of the container body 21 serve as cold air inlets, and the contents such as vegetables are transferred to the container body 21. When this is put in 21 and stored in the pre-cooling chamber, the cold air outside the container flows smoothly into the container through the cold air inlet, so that the cooling efficiency is high.

  On the other hand, as shown in FIG. 11, when packing the lid 22 manufactured by a molding maker, the lids 22 are overlapped with the two lids 22 facing each other so that the respective lids 22 face each other. Since the four convex portions 24 are arranged, and the inner fitting portion 25 and the outer fitting portion 26 at the tip portion of the convex portion 24 are fitted with the corresponding inner fitting portion 25 and outer fitting portion 26 of the lid, The two lids 22 can be overlaid in a stable state. Similarly to the case shown in FIG. 5, by stacking two stacked lid units in multiple stages, a large number of lids 22 can be stacked and packed without causing load collapse.

[Third Embodiment]
FIGS. 13 to 16 are views showing a third embodiment of the foamed synthetic resin container of the present invention, FIG. 13 is an assembled perspective view of the foamed synthetic resin container 30, and FIG. 14 is a perspective view showing the structure of the back surface of the lid 32. 15 is a perspective view showing a state in which two lids 32 are overlapped, and FIG. 16 is a perspective view showing a state in which a plurality of container bodies 31 are stacked. In these drawings, reference numeral 30 is a foamed synthetic resin container, 31 is a container body, 32 is a lid, 33 is a notch, 34 is a convex portion, 35 is an inner fitting portion of the lid, 36 is an outer fitting portion of the lid, 38 Is an inner fitting part of the container body, and 39 is an outer fitting part of the container body.

  The foamed synthetic resin container 30 of the present embodiment is composed of a container body 31 and a lid 32 having a substantially quadrangular shape in a plan view made of a synthetic resin foam, and the container body 31 is a pair of opposed side walls on the four sides. Each side has two notches 33, and the lid 32 has a convex portion 34 corresponding to the notch 33 at the lower peripheral edge. With the lid 32, the inside of the container body 31 is substantially free from outside air. It is structured to be in a blocked state.

  The foamed synthetic resin container 30 of the present embodiment can be configured using the same resin material as the foamed synthetic resin container 10 of the first embodiment described above, and can be manufactured by the same manufacturing method.

  In the foamed synthetic resin container 30 of the present embodiment, the lid 32 has two convex portions 34 on each of a pair of opposite sides of the four side wall lower portions, and the two lids 32 face each other. The protrusions 34 of the lids 32 are alternately arranged so as to be alternately arranged when they are overlapped (see FIG. 15), and the inner fitting portion 35 is arranged on the outer fitting portion 36 at the tip of the protrusion 34. The outer fitting part 36 is formed longer than the inner fitting part 35 at the lower part of the side wall other than the tip part of the convex part, and is formed on the upper edge of the side wall of the container body 31. A notch 33, an inner fitting portion 38 and an outer fitting portion 39 corresponding to the convex portion 34, the inner fitting portion 35 and the outer fitting portion 36 of the lid 32 are formed.

  In the foamed synthetic resin container 30 of the present embodiment, when the container body 31 and the lid 32 are separately formed and individually packed, the container body 31 is formed by stacking a plurality of container bodies 31 as shown in FIG. Packed in state. In addition, when contents such as vegetables are put into the container body 31 and precooled, the notch 33 provided on the side wall of the container body 31 serves as a cold air inlet, and the contents such as vegetables are put into the container body 31. When storing this in the pre-cooling chamber, the cool air outside the container flows smoothly into the container through the cool air inlet, so that the cooling efficiency is high.

  On the other hand, as shown in FIG. 15, when the lid 32 manufactured by a molding maker is packed, the lids 32 are overlapped with the back surfaces of the lids 32 facing each other. Since the convex portions 34 are alternately arranged, and the inner fitting portion 35 and the outer fitting portion 36 at the tip portion of the convex portion 34 are fitted with the corresponding inner fitting portion 35 and outer fitting portion 36 of the lid, The two lids 32 can be overlaid in a stable state. Similarly to the case shown in FIG. 5, a large number of lids 32 can be stacked and packed without causing collapse of the load by stacking two overlapping lid units in multiple stages.

[Fourth Embodiment]
17-20 is a figure which shows 4th Embodiment of the foaming synthetic resin container of this invention, FIG. 17 is a perspective view of the foaming synthetic resin container 40, FIG. 18 is a perspective view which shows the structure of the back surface of the lid | cover 42. FIG. 19 is a perspective view showing a state in which two lids 42 are overlapped, and FIG. 20 is a perspective view showing a state in which a plurality of container main bodies 41 are stacked. In these drawings, reference numeral 40 is a foamed synthetic resin container, 41 is a container body, 42 is a lid, 43A and 43B are notches, 44A and 44B are convex portions, 45 is an inner fitting portion of the lid, and 46 is an outer fitting of the lid. A joint portion 47 is an inner fitting portion of the container body, and 48 is an outer fitting portion of the container body.

  The foamed synthetic resin container 40 of the present embodiment is composed of a container body 41 and a lid 42 that are substantially quadrilateral in plan view made of a synthetic resin foam, and the container body 41 has a notch 43A on each side of the upper edge of the four side walls. 43B, and the lid 42 has convex portions 44A and 44B corresponding to the notches 43A and 43B at the lower peripheral edge, and the inside of the container body 41 is substantially cut off from the outside air with the lid 42 in place. It becomes the structure which becomes the state which became.

  The foamed synthetic resin container 40 of the present embodiment can be configured using the same resin material as the foamed synthetic resin container 10 of the first embodiment described above, and can be manufactured by the same manufacturing method.

  In the foamed synthetic resin container 40 of the present embodiment, the lid 42 has a first convex portion 44A in one side facing region of a pair of sides opposed to each other among the four side wall lower portions, and the center of the pair of remaining sides is The first convex portion 44A has a second convex portion 44B having a projection height almost half that of the first convex portion 44A, and one second convex portion 44B of the tip end portion of the first convex portion 44A and the two second convex portions 44B. Then, the inner fitting portion 45 is formed to have a longer projecting length than the outer fitting portion 46, and the lower end portion of the side wall other than one tip portion of the first convex portion 44A and the two second convex portions 44B, and Outer fitting part 46 is formed to have a longer protruding length than inner fitting part 45 at the tip of the other second protruding part 44B among the second protruding parts 44B, and on the upper edge of the side wall of container body 41. , Cuts corresponding to the convex portions 44A, 44B, the inner fitting portion 45, and the outer fitting portion 46 of the lid 42. 43A, is characterized by 43B and the inner fitting portion 47 and the outer fitting portion 48 is formed.

  In the foamed synthetic resin container 40 of the present embodiment, when the container main body 41 and the lid 42 are separately molded and individually packed, the container main body 41 has a plurality of container main bodies 41 stacked as shown in FIG. Packed in state. When the contents such as vegetables are put into the container body 41 and precooled, the notches 43 provided on the four side walls of the container body 41 serve as cold air inlets, and the contents such as vegetables are transferred to the container body 41. When this is put in 41 and stored in the pre-cooling chamber, the cold air outside the container flows smoothly into the container through the cold air inlet, so that the cooling efficiency is high.

  On the other hand, as shown in FIG. 19, when packing the lids 42 manufactured by the molding manufacturer, the lids 42 are overlapped with the two lids 42 facing each other so that the back surfaces of the lids 42 face each other. Among the convex portions, the first convex portions 44A are arranged side by side, the second convex portions 42B are in contact with each other with their distal ends abutted against each other, and the inner fitting portion 45 at the distal end portion of the first convex portion 44A and The outer fitting portion 46 is fitted with the corresponding inner fitting portion 45 and the outer fitting portion 46 of the corresponding lid, and the inner fitting portion 45 and the outer fitting portion 46 are also at the tip of the second convex portion 44B. Since the two are fitted, the two lids 42 can be overlapped in a stable state. Similarly to the case shown in FIG. 5, a plurality of lids 42 can be stacked and packed without causing collapse of the load by stacking the two overlapping lid units in multiple stages.

It is an assembly perspective view showing a 1st embodiment of a foaming synthetic resin container of the present invention. It is a perspective view which shows the structure of the back surface of a lid | cover in the foaming synthetic resin container of 1st Embodiment. It is a perspective view which shows the stacking state of a container main body in the foamed synthetic resin container of 1st Embodiment. It is a perspective view which shows the state which piled up the cover of 2 sheets in the foaming synthetic resin container of 1st Embodiment. It is sectional drawing which shows the state which accumulated many lid | covers in the foamed synthetic resin container of 1st Embodiment. It is a perspective view which illustrates the conventional product of a foaming synthetic resin container. It is a perspective view which shows the state which piled up the cover of 2 sheets in the conventional product. It is sectional drawing which shows the state which accumulated many lid | covers in the conventional product. It is an assembly perspective view which shows 2nd Embodiment of the foaming synthetic resin container of this invention. It is a perspective view which shows the structure of the back surface of a lid | cover in the foamed synthetic resin container of 2nd Embodiment. It is a perspective view which shows the state which overlap | superposed two lid | covers in the foaming synthetic resin container of 2nd Embodiment. It is a perspective view which shows the state which piled up the some container main body in the foaming synthetic resin container of 2nd Embodiment. It is an assembly perspective view which shows 3rd Embodiment of the foaming synthetic resin container of this invention. It is a perspective view which shows the structure of the back surface of a lid | cover in the foamed synthetic resin container of 3rd Embodiment. It is a perspective view which shows the state which piled up the cover of 2 sheets in the foaming synthetic resin container of 3rd Embodiment. It is a perspective view which shows the state which piled up the some container main body in the foaming synthetic resin container of 3rd Embodiment. It is an assembly perspective view which shows 4th Embodiment of the foaming synthetic resin container of this invention. It is a perspective view which shows the structure of the back surface of a lid | cover in the foamed synthetic resin container of 4th Embodiment. It is a perspective view which shows the state which piled up the cover of 2 sheets in the foaming synthetic resin container of 4th Embodiment. It is a perspective view which shows the state which piled up the some container main body in the foaming synthetic resin container of 4th Embodiment.

Explanation of symbols

10, 20, 30, 40 ... Foamed synthetic resin container 11, 21, 31, 41 ... Container body 12, 22, 32, 42 ... Lid 13, 23, 33, 43A, 43B ... Notch 14, 24, 34, 44A, 44B ... convex part 15, 25, 35, 45 ... inner fitting part 16, 26, 36, 46 ... outer fitting part 17, 27, 38, 47 ... inner fitting part 18, 28, 39, 48 ... outer fitting Joint part.

Claims (5)

The container body is formed of a synthetic resin foam and has a substantially quadrilateral shape in plan view. The container body has notches on at least a pair of opposite sides of the upper side edges of the four sides, and the lid is formed at the lower periphery. In the foamed synthetic resin container that has a projection corresponding to the notch, and the inside of the container body is substantially shielded from the outside air with the lid on,
The convex part of the lid is arranged so that the length of half or less of the opposite sides is line symmetric or point symmetric, and at least the convex part at the lower peripheral edge of the lid has a thickness direction of the side wall. An inner fitting portion and an outer fitting portion having different projection lengths from the lower surface of the lid with the central portion as a boundary are formed, and the projection lengths of the inner fitting portion and the outer fitting portion are The front end portion and the both side portions are different, and the inner fitting portion and the outer fitting portion corresponding to the inner fitting portion and the outer fitting portion are formed on the upper edge of the side wall of the container body. A foamed synthetic resin container.   The lid has a convex portion in one side facing region of a pair of opposing sides of the lower side walls of the four sides, and the inner fitting portion is longer than the outer fitting portion at the tip of the convex portion. The outer fitting part is formed to have a longer protruding length than the inner fitting part at the lower part of the side wall other than the tip part of the convex part, and the convex part of the lid is fitted to the inner side of the upper side wall of the container body. The foamed synthetic resin container according to claim 1, wherein a notch, an inner fitting portion, and an outer fitting portion corresponding to the portion and the outer fitting portion are formed.   The lid has a convex portion on one side of each of the lower portions of the side walls of the four sides, and the inner fitting portion has a longer protruding length than the outer fitting portion at the tip portion of the convex portion, and other than the tip portion of the convex portion. In the lower part of the side wall, the outer fitting part is formed to have a longer protruding length than the inner fitting part, and on the upper edge of the side wall of the container body, the convex part of the lid, the inner fitting part and the outer fitting part The foamed synthetic resin container according to claim 1, wherein a corresponding notch, an inner fitting portion, and an outer fitting portion are formed.   When the lid is overlapped on each of a pair of opposing sides of the lower side of the four sides, the projections of the lids are alternately arranged when the two lids are overlapped so that the back surfaces of the lids face each other. They are arranged opposite each other so that they are lined up, and the inner fitting part has a longer protruding length than the outer fitting part at the tip part of the convex part, and the outer fitting part at the lower part of the side wall other than the tip part of the convex part Is formed with a longer projecting length than the inner fitting portion, and the upper edge of the side wall of the container body has a notch and an inner fitting portion corresponding to the convex portion of the lid, the inner fitting portion, and the outer fitting portion. The foamed synthetic resin container according to claim 1, wherein an outer fitting portion is formed.   The lid has a first convex portion in a one-side opposed region of a pair of opposing sides of the lower side walls of the four sides, and has a protruding height that is substantially half of the first convex portion at the center of the remaining pair of sides. The inner fitting part is formed longer than the outer fitting part at one tip of the tip part of the first projecting part and the two second projecting parts, The outer fitting part is more than the inner fitting part at the lower end of the side wall other than one tip part of the tip part of the first convex part and the two second convex parts and the other tip part of the second convex part. A notch, an inner fitting portion, and an outer fitting portion corresponding to the convex portion, the inner fitting portion, and the outer fitting portion of the lid are formed on the upper edge of the side wall of the container body, and the protruding length is formed long. The foamed synthetic resin container according to claim 1, wherein the foamed synthetic resin container is formed.

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