Container

Abstract

To provide a container which is installed with a vacuum heat insulation material with a high heat insulating effect, and capable of improving a cooling property and a heating property.SOLUTION: A container 1 comprises a bottom wall forming part 4 with a generally rectangular shape in a plan view, and side wall parts 11, 21 which can be changed in a posture between an upright posture in which it is raised above each side part of the bottom wall forming part 4, and a folding posture in which it is folded to the central part side of the bottom wall forming part 4. The container is configured so that it can be changed in a state between an assembled state in which all side wall parts 11, 21 are in the upright posture, and a folding state in which all side wall parts 11, 21 are in the folding posture. The side wall parts 11, 21 and the bottom wall forming part 4 each include a first member 61 and a second member 62, which form internal spaces 14, 33 between them. The first member 61 and the second member 62 are configured by synthetic resin. A vacuum heat insulation material 81, and an insulating member 82 made of a foamed resin are provided in the internal spaces 14, 33.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present invention relates to a container capable of containing an item. [Background technology]

[0002] Conventionally, containers that include a box-shaped container body that opens upward and a lid that fits over the container body have been known as containers used for transporting goods, etc. There is also a technology in which the container body and the lid are assembled with an outer member that configures the outside of the container and an inner member that configures the inside of the container, respectively, to form an internal space, and a heat insulating member is provided in the internal space to improve the cold and warm insulation properties (see, for example, Patent Document 1, etc.). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-56312 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, it is desirable to effectively install vacuum insulation material, which is made by packaging insulation material and creating a vacuum around the insulation material, in the above-mentioned internal space in order to improve the cold and heat retention properties.

[0005] The present invention has been made to solve the problems exemplified above, and its purpose is to provide a container that can be fitted with vacuum insulation material with high insulating properties, thereby improving the cold and heat retention properties. [Means for solving the problem]

[0006] The following describes each means suitable for achieving the above objects, etc., by item. Note that, as necessary, the effects and advantages specific to the corresponding means will be added.

[0007] Means 1. A bottom wall component having a generally rectangular shape in plan view; a plurality of side wall portions that can be changed in position between an upright position in which the side wall portions are respectively erected above the respective side edges of the bottom wall portion and a folded position in which the side wall portions are folded toward a central portion of the bottom wall portion, A container that can be changed between an assembled state in which all of the side wall portions are in the upright position and a folded state in which all of the side wall portions are in the folded position, At least a predetermined one of the side wall portions and the bottom wall constituent portion includes a first member and a second member that forms an internal space between the first member and the second member, the first member and the second member are made of synthetic resin, A container characterized in that the internal space is provided with a vacuum insulation material and an insulation member made of foamed resin.

[0008] According to Method 1, by providing the interior space with not only vacuum insulation, which has relatively high insulating performance, but also a foamed resin insulation member, which can be freely shaped, the insulation member can fill gaps in the interior space other than the area where the vacuum insulation is installed, while more reliably positioning the vacuum insulation. This avoids situations such as the vacuum insulation being misaligned from its intended position, resulting in poor insulation, poor insulation performance in areas other than the area where the vacuum insulation is installed, damage to the vacuum insulation due to relative displacement within the interior space during transport of the container, or damage to the vacuum insulation when installing the vacuum insulation member if the vacuum insulation member is designed to fit directly into the interior space. As a result, the highly insulating vacuum insulation member can be effectively installed, ensuring improved heat and cold insulation of the container.

[0009] Means 2. The heat insulating member is formed by injecting an injection type foaming resin into the internal space and allowing it to foam and harden; The container described in Means 1 is characterized in that the insulating material is arranged from the first member to the second member between the vacuum insulating material installed in the internal space and the first member and the second member in the inner and outer circumferential directions of the surface of the side wall portion on which the vacuum insulating material is installed that defines the storage space of the container, and an area is provided in which the insulating material is physically or chemically bonded to the first member and the second member.

[0010] According to the second method, the effect of holding the vacuum insulation material with the insulating member is more reliably achieved, and the effect of filling the interior space except for the area where the vacuum insulation material is installed with the insulating member is more pronounced, thereby improving insulation performance. Furthermore, by disposing the insulating member from the first member to the second member in the interior space and ensuring an area where the insulating member is bonded (adsorbed) to the first and second members, the first member and the second member can be connected via the insulating member. Therefore, the first member, the second member, and the insulating member are integrated, and the vacuum insulation material is more firmly held in place, stabilizing the shape of the target member on which the vacuum insulation material and the insulating member are installed, thereby improving strength and rigidity. Furthermore, there is no need to directly bond the first member to the second member, and there is no need to pre-form the insulating member to fit the shape of the interior space, thereby improving manufacturing workability.

[0011] Means 3: The first member constituting the side wall portion constitutes the outer surface side of the side wall portion, and the second member constituting the side wall portion constitutes the inner surface side of the side wall portion, The first member of the predetermined side wall portion has a handle portion recessed on an outer surface side toward the internal space, The container described in means 1 or 2 is characterized in that the side wall portion having the handle portion is provided with the vacuum insulation material arranged so as to include an area that overlaps with the handle portion in the thickness direction of the side wall portion.

[0012] When handles are provided on the side wall to improve the ease of carrying the container, it is desirable to provide the handles so that they are concave relative to the side wall from the standpoints of saving space when installing the container and preventing damage to the handles. However, providing the handles in a concave shape relative to the side wall reduces the thickness of the part of the side wall where the handles are provided, which raises concerns about a decrease in the insulating performance of that part. In this regard, according to Means 3, by arranging vacuum insulation material with relatively high insulating performance in the internal space of the side wall so that it includes an area that overlaps with the handles in the thickness direction of the side wall, such concerns can be eliminated and the handles can be provided in an appropriate manner without a decrease in insulating performance.

[0013] Means 4. A container as described in Means 3, characterized in that the vacuum insulation material is provided on the second member side in the internal space, and the insulation member is provided between the handle portion and the vacuum insulation material, and is constructed by injecting an injection-type foaming resin into the internal space and allowing it to foam and harden.

[0014] According to the fourth aspect, the insulating member can be provided to fit the shape of the handle, improving the insulating performance of the area around the handle. Also, by interposing the insulating member between the first member and the vacuum insulating material, damage to the vacuum insulating material due to impact from outside the container can be prevented.

[0015] Means 5. The side wall portion is connected to the bottom wall component so as to be rotatably displaceable, the side wall portions include a pair of opposing front-folded side wall portions that are first set to the folded position when the container is changed from the assembled state to the folded state, and a pair of opposing rear-folded side wall portions that are set to the folded position above the front-folded side wall portions that are set to the folded position, The rear folding side wall portion is in the folded position with the second member facing downward, The container described in means 4 is characterized in that the handle portion is provided on the rear folding side wall portion.

[0016] According to the fifth aspect, the side wall portions are rotatably connected to the bottom wall portion, which allows the side wall portions to be relatively easily changed between an upright position and a folded position, thereby allowing the container to be relatively easily changed between an assembled state and a folded state. In this case, when the rear folded side wall portion is in the folded position, the second member constituting the inner surface of the rear folded side wall portion is on the lower side (facing downward). Furthermore, as described in the fourth aspect, the vacuum insulation material is provided on the second member side in the internal space, and an insulating member is provided between the first member including the handle portion and the vacuum insulation material. Therefore, when folded containers are stacked one on top of another and a force is applied from above to the folded container, the force is likely to be applied to the rear folded side wall portion in the folded position, but the insulating member protects the vacuum insulation material, preventing damage to the vacuum insulation material.

[0017] Means 6. The bottom wall component comprises a bottom wall portion having a generally rectangular shape in a plan view, and base portions each protruding upward along a side edge of the bottom wall portion, The side wall portion is connected to the base portion so as to be rotatably displaceable between the upright position and the folded position, the bottom wall component includes the first member and the second member, the internal space of the bottom wall component extends to a portion corresponding to the bottom wall portion and a portion corresponding to the base portion, The container described in Means 1 is characterized in that the vacuum insulation material and the insulation member are provided in a portion of the internal space of the bottom wall component that corresponds to a specified base portion.

[0018] According to the sixth aspect, it is possible to avoid a situation in which the heat insulating performance of the base portion that is continuous with the lower side of the side wall portion is reduced when the container is assembled.

[0019] Means 7. A container having a bottom wall component having a generally rectangular shape in a plan view and side wall components erected above each side edge of the bottom wall component, At least a predetermined one of the side wall portions and the bottom wall constituent portion includes a first member and a second member that forms an internal space between the first member and the second member, the first member and the second member are made of synthetic resin, The internal space is provided with a vacuum insulation material and a foamed resin insulation member, the first member constituting the side wall portion constitutes an outer surface side of the side wall portion, and the second member constituting the side wall portion constitutes an inner surface side of the side wall portion, The first member of the predetermined side wall portion has a handle portion recessed on an outer surface side toward the internal space, A container characterized in that the side wall portion having the handle portion is provided with the vacuum insulation material arranged so as to include an area that overlaps with the handle portion in the thickness direction of the side wall portion.

[0020] According to the seventh aspect, by providing the interior space with not only vacuum insulation material, which has relatively high insulating performance, but also a foamed resin insulation member, the shape of which can be freely set, the insulation member can fill gaps in the interior space other than the area where the vacuum insulation material is installed, while more reliably positioning the vacuum insulation material. In particular, by arranging the vacuum insulation material in the part of the side wall where the thickness becomes thinner due to the provision of the handle, it is possible to prevent a decrease in the insulating performance of the side wall.

[0021] Means 8. In the method for producing a container according to any one of the above means 1 to 7, the first member and the second member are integrally formed from an olefin-based resin, providing an activated surface-treated region, to which reaction activity for bonding with the heat insulating member is imparted, in at least a portion of a region of the first member that defines the internal space and in at least a portion of a region of the second member that defines the internal space; The vacuum insulation material is fixed to one of the first member and the second member, and the first member and the second member are combined to enclose the vacuum insulation material and form the internal space; A method for manufacturing a container, characterized in that the insulating member is formed by injecting uncured foamable urethane-based resin into the internal space and foaming and curing it, and the insulating member is bonded to the activated surface treated area.

[0022] According to Means 8, by providing the first and second members with activated surface-treated regions, the first and second members made of olefin-based resin can be suitably bonded (adsorbed) to the insulating member made of foamable urethane-based resin. Therefore, the first and second members are connected via the insulating member, and the vacuum insulation material can be more firmly held. Examples of "activated surface treatment" include flame treatment, corona discharge treatment, plasma treatment, ultraviolet irradiation treatment, and primer treatment. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is a perspective view showing the container in a covered state. [Figure 2] FIG. 2 is a perspective view showing the container in a placed state. [Figure 3] FIG. 2 is a perspective view showing the container body in an assembled state. [Figure 4] FIG. 2 is a perspective view showing the container body in a folded state. [Figure 5] 10 is a perspective view showing a container body with the short-side side wall portions in an upright position and the long-side side wall portions in a folded position. FIG. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] FIG. [Figure 9] FIG. [Figure 10] FIG. [Figure 11] FIG. 2 is an enlarged partial cross-sectional view of the container in a covered state. [Figure 12] FIG. 10 is a partially enlarged cross-sectional view of a container in a placed state according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0024] An embodiment will be described below with reference to the drawings. As shown in Figures 1, 3, etc., a container 1 includes a rectangular box-shaped container body 2 that opens upward, and a lid 3 that is removably fitted over the container body 2. As shown in Figure 6, the container body 2 includes a bottom wall component 4 that includes a bottom wall 5 that is generally rectangular in plan view, short-side base portions 6 that protrude upward from the bottom wall 5 along each of the short sides of the bottom wall 5, and long-side base portions 7 that protrude upward from the bottom wall 5 along each of the long sides of the bottom wall 5.

[0025] 3 to 5, the container body 2 includes short-side sidewalls 11 and long-side sidewalls 21 that are pivotally connected to the short-side bases 6 and long-side bases 7, respectively. The short-side sidewalls 11 and long-side sidewalls 21 are configured to be movable between an upright position in which they stand above the corresponding short-side bases 6 and long-side bases 7, and a folded position in which they are tilted above the bottom wall 5 (folded toward the center of the bottom wall component 4). Therefore, when storing items in the container 1, all of the short-side sidewalls 11 and long-side sidewalls 21 are in the upright assembled position (see FIG. 3), and when storing the container 1, all of the short-side sidewalls 11 and long-side sidewalls 21 are in the folded position (see FIG. 4), thereby enabling space saving and the like. In addition, the entire container 1, including the lid body 3, is configured to be able to change states between a covered state (see Figure 1) in which the lid body 3 is placed over the container body 2 in an assembled state, and a placed state (see Figure 2) in which the lid body 3 is placed over the container body 2 in a folded state.

[0026] 6 and other figures, the protrusion length of the short-side base portion 6 from the bottom wall portion 5 is longer than the protrusion length of the long-side base portion 7 from the bottom wall portion 5, and the formation position of the short-side bearing portion 8 for rotatably supporting the short-side sidewall portion 11 is also located higher than the formation position of the long-side bearing portion 9 for rotatably supporting the long-side sidewall portion 21. Furthermore, as shown in FIGS. 3 and 5 and other figures, the lateral width of the short-side sidewall portion 11 is configured to be approximately the same as the transverse width of the bottom wall component 4, and the lateral width of the long-side sidewall portion 21 is configured to be approximately the same as the distance between the pair of short-side base portions 6. Therefore, in this embodiment, when the assembled container body 2 is folded, as shown in FIG. 5, the pair of long-side sidewall portions 21 are first displaced to the folded position by overlapping them over the bottom wall portion 5, and then the short-side sidewall portion 11 is displaced to the folded position by overlapping them over the long-side sidewall portion 21.

[0027] As shown in Figures 6 to 8, 11, etc., the short-side side wall portion 11 includes a short-side base member 12 that constitutes most of the short-side side wall portion 11, including its outer portion, and a short-side inner surface member 13 that forms a short-side internal space 14 (see Figure 11) between itself and the inner surface of the short-side base member 12. The short-side base member 12 and the short-side inner surface member 13 are each integrally formed from polypropylene. Furthermore, the short-side side wall portion 11 includes a pair of short-side shaft protrusions 15 that protrude laterally from the lower part of each of the left and right side edges.

[0028] As shown in Figure 6 and other figures, the long-side side wall portion 21 includes a long-side base member 22 that constitutes most of the long-side side wall portion 21, including its outer portion, and a long-side inner surface member 23 that forms a long-side internal space 24 (see Figure 12 showing another embodiment) between itself and the inner surface of the long-side base member 22. The long-side base member 22 and the long-side inner surface member 23 are each integrally formed from polypropylene. Furthermore, the long-side side wall portion 21 includes a pair of long-side shaft protrusions 25 that protrude laterally from the lower portions of the left and right side portions, respectively.

[0029] 3, 5, 6, etc., restricting portions 16 are provided that protrude inward from both side edges on the inner surface of the short-side sidewall portions 11 (short-side base members 12) into the container body 2. The restricting portions 16 are configured to overlap the outer surfaces of the long-side sidewall portions 21 in the inward-outward direction of the container 1 when the container body 2 is assembled. Furthermore, the restricting portions 16 are provided with insertion holes 17 that penetrate the short-side sidewall portions 11 in the width direction.

[0030] In contrast, both sides of the outer surface of the long side sidewall 21 (long side base member 22) are provided with regulated portions 26 that, when the container body 2 is in an assembled state, generally abut against the regulating portions 16 of the short side sidewall 11, and insertion protrusions 27 that protrude from the regulated portions 26 to the outside of the container body 2. When the container body 2 is in an assembled state, the outer surface of the regulated portions 26 generally abuts against the regulating portions 16, both sides of the long side sidewall 21 generally abut against the inner surface of the short side sidewall 11, and the insertion protrusions 27 are inserted into the insertion holes 17 to be locked.

[0031] As shown in Figures 6, 9, 10, etc., the bottom wall constituent part 4 comprises a bottom wall base member 31 which constitutes most of the bottom wall constituent part 4, including the upper part (inner part), and a bottom wall lower surface member 32 which constitutes the lower surface of the bottom wall part 5 and forms a bottom wall internal space 33 between itself and the lower surface of the bottom wall base member 31. The bottom wall base member 31 and the bottom wall lower surface member 32 are each integrally formed from polypropylene. The bottom wall base member 31 comprises an inner bottom surface constituent part 34 which constitutes the upper surface of the bottom wall part 5 which is generally rectangular in plan view, the short side side base parts 6 which protrude upward from the short side edges of the inner bottom surface constituent part 34, and the long side side base parts 7 which protrude upward from the long side edges of the inner bottom surface constituent part 34.

[0032] The short side base portion 6 includes a short side base inner lower vertical wall portion 35 extending upward from the short side edge of the inner bottom surface constituent portion 34, a short side base middle wall portion 36 extending from the upper edge of the short side base inner lower vertical wall portion 35 to the outside of the container body 2, a short side base inner upper vertical wall portion 37 extending upward from the edge of the short side base middle wall portion 36 on the outside of the container body 2, a short side base axis wall portion 38 extending upward from both side edges of the short side base middle wall portion 36, the short side base inner upper vertical wall portion 37, and It comprises a short side base upper wall portion 39 extending outward from the upper edge of the short side base axial wall portion 38 to the outside of the container body 2, a short side base outer vertical wall portion 40 extending downward from the outer edge of the short side base upper wall portion 39 to the container body 2, an axial wall adjustment portion 41 connecting the edge of the short side base axial wall portion 38 on the longitudinal width direction central side of the container body 2 to the short side base outer vertical wall portion 40, and a support wall portion 42 protruding from the axial wall adjustment portion 41 to the longitudinal width direction central side of the container body 2.

[0033] The short-side bearing portions 8 are provided at the bottom of each short-side base shaft wall portion 38 so as to penetrate all the way to the short-side base outer vertical wall portion 40. The short-side shaft protrusions 15 are inserted into the short-side bearing portions 8 and are approximately fitted to an extent that rotation of the short-side shaft protrusions 15 is permitted. This allows the short-side side wall portions 11 to be connected (pivotally supported) to the bottom wall constituent portion 4 (short-side base portion 6) so as to be rotatably displaceable.

[0034] The long side base portion 7 comprises a long side base inner lower vertical wall portion 44 extending upward from the long side edge of the inner bottom surface component 34, a long side base middle wall portion 45 extending from the upper edge of the long side base inner lower vertical wall portion 44 toward the outside of the container body 2, a long side base inner upper vertical wall portion 46 extending upward from the outer edge of the container body 2 of the long side base middle wall portion 45, a long side base upper wall portion 47 extending from the upper edge of the long side base inner upper vertical wall portion 46 toward the outside of the container body 2, and a long side base outer vertical wall portion 48 extending downward from the outer edge of the container body 2 of the long side base upper wall portion 47. Both sides of the long side base upper wall portion 47 are inclined upward toward the side and connected to the short side base portion 6, and the support wall portion 42 of the short side base portion 6 is connected to the upper surface of both sides of the long side base upper wall portion 47.

[0035] In the long-side base portion 7, in the range where the long-side base inner lower vertical wall portion 44 and the long-side base middle wall portion 45 are formed, cutout portions are appropriately provided to receive and guide the central axis portion of the rotational displacement of the long-side side wall portion 21, and the long-side bearing portion 9 is provided in the short-side base inner lower vertical wall portion 35 adjacent to the long-side base portion 7 (via the cutout portion). The long-side shaft protrusion 25 is inserted into the long-side bearing portion 9 and is approximately fitted to an extent that rotation of the long-side shaft protrusion 25 is permitted. In this way, the long-side side wall portion 21 is rotatably connected (axially supported) to the bottom wall constituent portion 4 (long-side base portion 7). In particular, in this embodiment, the long-side bearing portion 9 extends from the lower edge to the upper edge of the short-side base inner lower vertical wall portion 35, and when the long-side sidewall portion 21 is in the folded position, it can be slid up and down within the range where the long-side shaft protrusion 25 is inserted into the long-side bearing portion 9. This allows the long-side sidewall portions 21 in the folded position to be stacked one on top of the other.

[0036] 3, 6, 7, etc., a handle 51 is provided on the outer surface of each short-side sidewall 11, allowing an operator to insert their fingertips inward from the outer surface of the short-side sidewall 11, and the container 1 can be carried by hooking their fingertips around the upper edge of the handle 51. Furthermore, as shown in FIGS. 4, 6, 7, etc., a base receiving recess 52 is provided on the lower outer surface of the short-side sidewall 11, which receives the upper part of the short-side base 6 (the part consisting of the short-side base inner upper vertical wall 37, the short-side base upper step wall 39, and the short-side base outer vertical wall 40) when the container body 2 is assembled. As a result, when the container body 2 is assembled, the lower part of the short-side sidewall 11 and the upper part of the short-side base 6 overlap in the inner and outer directions of the container body 2 (see FIG. 11).

[0037] In addition, as shown in Figure 6 and other figures, an engagement protrusion 53 is provided on the inner surface of the short-side base 6, protruding from the short-side base inner upper vertical wall 37 toward the inside of the container body 2. In contrast, as shown in Figures 4 and 7, an engagement recess 54 into which the engagement protrusion 53 is inserted when the short-side side wall 11 is in an upright position is provided at a location corresponding to the base receiving recess 52 of the short-side side wall 11. For example, when the assembled container body 2 is lifted by grasping the short-side side wall 11, the engagement protrusion 53 and the engagement recess 54 are vertically engaged (the bottom wall constituent part 4 is lifted with the lower edge of the engagement protrusion 53 supported by the lower edge of the engagement recess 54). This reduces the burden on the structure that rotatably connects the short side side wall portion 11 (and the long side side wall portion 21) to the bottom wall component 4 when the assembled container body 2 is lifted by grasping the short side side wall portion 11, preventing situations such as the short side side shaft protrusion 15 falling off from the short side side bearing portion 8 (the long side side shaft protrusion 25 falling off from the long side side bearing portion 9).

[0038] Furthermore, one of the butt joints between the short side base member 12 and the short side inner surface member 13, one of the butt joints between the long side base member 22 and the long side inner surface member 23, and one of the butt joints between the bottom wall base member 31 and the bottom wall underside member 32 has a groove formed in it so that the entire circumference of the edge is bifurcated, and the other of the butt joints is inserted into the groove to bring them into a fitted state, and thus the short side base member 12 and the short side inner surface member 13, the long side base member 22 and the long side inner surface member 23, and the bottom wall base member 31 and the bottom wall underside member 32 are each assembled. Hereinafter, of the short side side wall portion 11, the long side side wall portion 21, and the bottom wall component portion 4, the short side base member 12, the long side base member 22, and the bottom wall underside member 32 that constitute the outer surface side of the container 1 (container body 2) will be collectively referred to as the "first member 61," and the short side inner surface member 13, the long side inner surface member 23, and the bottom wall base member 31 that constitute the inner surface side (the storage space 2a (see Figure 3) side) of the container 1 (container body 2) will be collectively referred to as the "second member 62."

[0039] As shown in FIG. 6 and other figures, the lid body 3 includes a lid body 71 that can close the opening on the top surface of the container body 2 in the assembled state, and a fastener 72 that is attached to the lid body 71 to maintain the container 1 covered (preventing the lid body 3 from falling off the assembled container body 2). A pair of fasteners 72 is provided corresponding to the center of each of a pair of opposing short side edges of the lid body 3. As shown in FIG. 11, the lid body 71 of this embodiment is integrally formed from polypropylene by blow molding so as to form an internal space 73 of the lid body. The fastener 72 is also integrally formed from polypropylene. Furthermore, as shown in FIG. 6, the fastener 72 is provided so as to protrude downward from the underside of the lid body 71, and a locking hole 74 is provided at the protruding portion. On the other hand, as shown in Figures 1, 7, etc., a locking protrusion 75 is provided on the upper outer surface of each short side side wall portion 11, which is inserted into and locked into the locking hole portion 74 when the container body 2 in an assembled state is covered with the lid body 3.

[0040] The uneven shapes of the container body 2 and the lid body 3 restrict displacement of the long side wall portion 21 toward the folded position when the container 1 is in the covered state, and restrict relative horizontal displacement of the lid body 3 with respect to the container body 2, restrict relative horizontal displacement of the upper and lower containers 1 when containers 1 in the covered state are stacked one on top of another, and restrict relative horizontal displacement of the upper and lower container bodies 2 when container bodies 2 in the assembled state and folded state are stacked one on top of another. Furthermore, when lid bodies 3 (upside down) are stacked one on top of another, relative horizontal displacement of the upper and lower lid bodies 3 is restricted, and when the lid body 3 is placed on the folded container body, (together with the shape of the fastener 72) the relative horizontal displacement of the container body 2 and the lid body 3 is restricted.

[0041] As shown in FIG. 11 , the short-side internal spaces 14, the long-side internal spaces 24 (see FIG. 12 for another embodiment of the long-side internal spaces 24), and the bottom wall internal space 33 are provided with vacuum insulation materials 81 and insulating members 82 made of foamed polyurethane. The vacuum insulation materials 81 are made by wrapping a predetermined insulating material (e.g., glass wool, rock wool, etc.) in a film with high gas barrier properties, and creating a vacuum around the insulating material. In this embodiment, the vacuum insulation materials 81 have an outer shape like a substantially rectangular plate, and one sheet is arranged for each of the short-side internal spaces 14, each of the long-side internal spaces 24, and the bottom wall internal space 33.

[0042] The heat insulating member 82 is formed by injecting injection-type foamed polyurethane into the short-side internal space 14, the long-side internal space 24, and the bottom wall internal space 33, and then foaming and curing it. More specifically, after the first member 61 and the second member 62 are integrally formed by injection molding or the like, the entire areas of the first member 61 and the second member 62 that define the internal spaces 14, 24, and 33 are subjected to an activation surface treatment to impart reactive activity for bonding (adsorption) with the heat insulating member 82. Examples of the activation surface treatment include physical or chemical surface treatments such as flame treatment, corona discharge treatment, plasma treatment, ultraviolet irradiation treatment, and primer treatment. By performing these treatments, the surface of the polyolefin resin, which originally has low activity, can be made uneven or highly active with exposed active groups and dangling bonds (unbonded atomic hands).

[0043] Next, the vacuum insulation material 81 is fixed to one of the first member 61, which has been subjected to the activation surface treatment to provide an activation surface treated region, and the second member 62. In this embodiment, double-sided tape is used to fix the vacuum insulation material 81 to the second member 62 side for the short side wall portion 11 and the long side side wall portion 21, and to the first member 61 side for the bottom wall component 4.

[0044] Next, the first member 61 and the second member 62 are combined (assembled) to form the internal spaces 14, 24, 33 so that the vacuum insulation material 81 is enclosed therein, and this combined state is held in a mold or the like. Furthermore, the raw material liquid of the insulation material 82 (in this example, uncured foamed polyurethane) is injected into the internal spaces 14, 24, 33 via an injection portion 84 (see Figures 3, 6, etc.) provided in the first member 61 or the second member 62, and is cured to form the insulation material 82.

[0045] In this embodiment, in the inner and outer circumferential directions (directions moving away from the center of the surface) of the surfaces of the short side side wall portions 11, the long side side wall portions 21, and the bottom wall constituent portion 4 on which the vacuum insulation material 81 is provided that define the storage space 2a of the container 1 (container body 2) (the inner surfaces for the short side side wall portions 11 and the long side side wall portions 21, and the upper surfaces that form the inner bottom surfaces of the storage space 2a for the bottom wall constituent portion 4), gaps (for example, of approximately 1 cm) are formed between each of the four sides of the outer circumferential edge of the vacuum insulation material 81 installed in the internal spaces 14, 24, 33 and the first member 61 and the second member 62, and uncured foamed polyurethane is injected into these gaps and cured, thereby arranging the insulation material 82 from the first member 61 to the second member 62.

[0046] Furthermore, by subjecting the surfaces of the first member 61 and the second member 62 that define the internal spaces 14, 24, and 33 to an activated surface treatment, the first member 61 and the second member 62 (areas that have been subjected to the activated surface treatment) are strongly bonded to the heat insulating member 82. In this manner, the short-side side wall portions 11, the long-side side wall portions 21, and the bottom wall constituent portion 4 are formed, each having an insulating layer made of the vacuum heat insulating material 81 and the heat insulating member 82. Note that the lid main body 71 is similar in that it does not incorporate the vacuum heat insulating material 81 and is not subjected to the activated surface treatment, but instead in that uncured foamed polyurethane is injected into the lid internal space 73 and solidified (foamed and cured) to provide the heat insulating member 82.

[0047] The handles 51 provided on each short-side side wall 11 are provided so as to recess the target portion of the short-side base member 12 (first member 61) toward the short-side internal space 14. Furthermore, the vacuum insulation material 81 provided in the short-side internal space 14 of each short-side side wall 11 is arranged in the thickness direction of the short-side side wall 11 so as to include an area overlapping with the handles 51 and an area overlapping with the base receiving recess 52.

[0048] In addition, since the vacuum insulation material 81 provided on each short-side side wall portion 11 is fixed to the short-side inner surface member 13 side (second member 62 side) when the insulation member 82 is formed, the vacuum insulation material 81 is provided on the short-side inner surface member 13 side (second member 62 side) in the short-side internal space 14, and the insulation member 82 is also provided between the handle portion 51 and the vacuum insulation material 81. Furthermore, the bottom wall internal space 33 of the bottom wall constituent portion 4 extends not only to the portion corresponding to the bottom wall portion 5 but also to the portions corresponding to the short-side side base portion 6 and the long-side side base portion 7, and in this embodiment, the vacuum insulation material 81 is provided only in the portion corresponding to the bottom wall portion 5, but the insulation member 82 is provided in the entire area of ​​the bottom wall internal space 33 other than the area where the vacuum insulation material 81 is provided, including the portions corresponding to the short-side side base portion 6 and the long-side side base portion 7. In this embodiment, a pair of long side wall portions 21 are configured as front-folding side wall portions, and a pair of short side side wall portions 11 are configured as rear-folding side wall portions, and the short side side wall portions 11 and the long side side wall portions 21 are folded in a direction in which the short side inner surface member 13 and the long side inner surface member 23 (second member 62) located on the inner side of the container body 2 are facing downward.

[0049] As described above in detail, according to this embodiment, not only vacuum insulation material 81 with relatively high insulating performance but also insulation members 82 made of foamed polyurethane, the shape of which can be freely set, are provided in the internal spaces 14, 24, 33 of the short side side wall portion 11, the long side side wall portion 21, and the bottom wall component 4, so that the insulation members 82 can fill gaps in the internal spaces 14, 24, 33 other than the installation area of ​​the vacuum insulation material 81, while more reliably positioning the vacuum insulation material 81. This prevents situations such as the vacuum insulation material 81 being positioned differently from the intended position, resulting in poor insulation, the insulation performance being too low outside the area where the vacuum insulation material 81 is installed, the vacuum insulation material 81 being damaged due to relative displacement in the internal spaces 14, 24, 33 during transport of the container 1 (if damaged, the original insulation performance of the vacuum insulation material 81 will not be achieved), or damage to the vacuum insulation material 81 when installing the vacuum insulation material 81 if the vacuum insulation material 81 is designed to fit directly into the internal spaces 14, 24, 33. As a result, the vacuum insulation material 81 with high insulation effect can be effectively installed, ensuring improved cold and warm insulation of the container 1.

[0050] The heat insulating member 82 is formed by injecting an injection-type polyurethane foam into the internal spaces 14, 24, and 33, and allowing it to foam and harden. This more reliably achieves the effect of holding the vacuum heat insulating material 81 with the heat insulating member 82, and also more significantly achieves the effect of improving heat insulating performance by filling the internal spaces 14, 24, and 33 with the heat insulating member 82 except for the area where the vacuum heat insulating material 81 is installed. Furthermore, by providing the first member 61 and the second member 62 with activated surface treatment areas, the first member 61 and the second member 62 made of polypropylene can be suitably bonded (adsorbed) to the heat insulating member 82 made of foamed polyurethane. Additionally, in the inner and outer circumferential directions of the surfaces of the short-side sidewall portions 11, the long-side sidewall portions 21, and the bottom wall constituent portion 4 that define the storage space 2a of the container 1, on which the vacuum insulation material 81 is provided, the insulation material 82 is arranged from the first member 61 to the second member 62 between the vacuum insulation material 81 installed in the internal space 14, 24, 33 and the first member 61 and the second member 62, providing an area where the insulation material 82 is bonded (adsorbed) to the first member 61 and the second member 62. This allows the first member 61 and the second member 62 to be connected via the insulation material 82. Therefore, the first member 61, the second member 62, and the insulation material 82 are integrated, and the vacuum insulation material 81 is more firmly held, which stabilizes the shapes of the short-side sidewall portions 11, the long-side sidewall portions 21, and the bottom wall constituent portion 4 and ultimately improves the strength and rigidity, etc. Furthermore, there is no need to directly bond the first member 61 and the second member 62, and there is no need to previously mold the heat insulating member 82 to fit the shapes of the internal spaces 14, 24, 33, which improves manufacturing workability.

[0051] Furthermore, the short-side base member 12 (first member 61) of each short-side sidewall 11 has a handle portion 51 on its outer surface that is recessed toward the short-side internal space 14, and each short-side sidewall 11 is provided with a vacuum insulation material 81 that is arranged so as to include an area that overlaps with the handle portion 51 in the thickness direction of the short-side sidewall 11. In other words, when providing the handle portion 51 on the short-side sidewall 11 to improve the ease of carrying the container 1, it is desirable to provide the handle portion 51 so that it is recessed relative to the short-side sidewall 11, from the perspectives of saving space when installing the container 1 and preventing damage to the handle portion 51. However, providing the handle portion 51 recessed relative to the short-side sidewall 11 reduces the thickness of the portion of the short-side sidewall 11 where the handle portion 51 is provided, which raises concerns about a decrease in the insulating performance of that portion. In this regard, according to the present embodiment, such concerns can be eliminated by arranging vacuum insulation material 81, which has relatively high insulating performance, in the short-side internal space 14 so that it includes an area that overlaps with the handle portion 51 in the thickness direction of the short-side side wall portion 11, thereby making it possible to preferably provide the handle portion 51 without reducing the insulating performance. Note that the vacuum insulation material 81 is also provided in an area of ​​the short-side internal space 14 that overlaps with the base receiving recess 52 in the thickness direction of the short-side side wall portion 11. In other words, by arranging the vacuum insulation material 81 in areas where it is difficult to ensure the thickness of the insulating member 82, the insulating performance of those areas is supplemented, thereby reliably improving the cold and warm insulation properties of the container 1 as a whole.

[0052] Furthermore, the vacuum insulation material 81 provided on the short-side side wall portion 11 is provided on the short-side inner surface member 13 side (second member 62 side) in the short-side internal space 14, and an insulation member 82 is provided between the handle portion 51 and the vacuum insulation material 81. The insulation member 82 is formed by injecting injection-type foamed polyurethane into the short-side internal space 14 and allowing it to foam and harden. This allows the insulation member 82 to be provided to fit the shape of the handle portion 51, thereby improving the insulation performance around the handle portion 51. Furthermore, by interposing the insulation member 82 between the short-side base member 12 (first member 61) and the vacuum insulation material 81, damage to the vacuum insulation material 81 due to impact from outside the container 1 can be prevented.

[0053] In addition, because the short-side sidewall portions 11 and the long-side sidewall portions 21 are rotatably connected to the bottom wall constituent portion 4, the short-side sidewall portions 11 and the long-side sidewall portions 21 can be relatively easily changed between an upright position and a folded position, and thus the container body 2 can be relatively easily changed between an assembled state and a folded state. When the assembled container body 2 is folded, the short-side sidewall portions 11 are folded above the pair of opposing long-side sidewall portions 21 that were previously in the folded position, and in the folded position, the short-side inner surface member 13 (second member 62) is on the lower side (facing downward). As described above, the vacuum insulation material 81 of the short-side sidewall portions 11 is provided on the short-side inner surface member 13 (second member 62) side in the short-side internal space 14, and the insulation member 82 is provided between the short-side base member 12 (first member 61) including the handle portion 51 and the vacuum insulation material 81. Therefore, when force is applied from above to the folded container body 2 by stacking container bodies 2 in a vertical position, or by stacking containers 1 in a placed position, the force is likely to be applied to the short side wall portion 11 in the folded position, but the vacuum insulation material 81 is protected by the insulation member 82, and it is possible to prevent situations such as damage to the vacuum insulation material 81.

[0054] The present invention is not limited to the above-described embodiment, and may be implemented as follows: Of course, other applications and modifications not exemplified below are also possible.

[0055] (a) In the above embodiment, the shapes of the short-side sidewall portions 11, the long-side sidewall portions 21, and the bottom wall constituent portion 4 are not particularly limited, and it is sufficient that at least one of these (for example, a pair of short-side sidewall portions 11) is configured to include a first member and a second member that forms an internal space between the first member, and that the internal space is provided with a vacuum insulation material 81 and a heat insulating member 82. Note that with respect to the short-side sidewall portions 11, the long-side sidewall portions 21, and the bottom wall constituent portion 4 that are not included, the vacuum insulation material 81 may be omitted, or both the vacuum insulation material 81 and the heat insulating member 82 may be omitted, or a configuration without an internal space may be used. The lid body 3 may also be configured to include a first member (for example, a lid base member that constitutes most of the lid body 3, including the upper surface side) and a second member (lid underside member) that forms an internal space between the first member (forming a lid body internal space 73 between the inner surface of the lid base member), and a vacuum insulation material 81 and an insulation member 82 may be provided in the internal space, as shown in Figure 12.

[0056] (b) In the above embodiment, in the inner and outer periphery directions of the surfaces of the short-side side wall portion 11, the long-side side wall portion 21, and the bottom wall constituent portion 4 that define the storage space 2a, on which the vacuum insulation material 81 is provided, an area where the insulation member 82 is arranged is provided between the first member 61 and the second member 62 and four sides (entire periphery) of the outer periphery of the vacuum insulation material 81. However, even if an area where the insulation member 82 is arranged is provided between one side of the vacuum insulation material 81 and the first member 61 and the second member 62, it is possible to connect the first member 61 and the second member 62 via the insulation member 82. However, in consideration of efficiently connecting the first member 61 and the second member 62 with the insulation member 82 in a balanced manner, it is desirable to provide an area where the insulation member 82 is arranged between two sides, three sides, or even the entire periphery of the vacuum insulation material 81 and the first member 61 and the second member 62.

[0057] In the above embodiment, the distance between the outer peripheral edge of the vacuum insulation material 81 and the first member 61 and the second member 62 in the inner and outer peripheral directions of the surfaces of the short-side sidewall portion 11, the long-side sidewall portion 21, and the bottom wall constituent portion 4 that define the storage space 2a is designed to be approximately 1 cm. However, this design can be appropriately changed depending on the thickness and shape of the component on which the vacuum insulation material 81 is to be installed (so that the vacuum insulation material 81 is disposed in a location where the thickness of the insulation member 82 is as thin as possible). Furthermore, the shape and thickness of the vacuum insulation material 81 are not particularly limited and can be appropriately changed depending on the thickness and shape of the component on which it is to be installed. For example, the vacuum insulation material 81 may be provided with a portion that can be bent approximately 90 degrees, or multiple vacuum insulation materials 81 may be provided on the component on which it is to be installed (the short-side sidewall portion 11, the long-side sidewall portion 21, and the bottom wall constituent portion 4).

[0058] In the above embodiment, the vacuum insulation material 81 is installed only in the portion of the bottom wall internal space 33 of the bottom wall component 4 that corresponds to the bottom wall portion 5. However, in addition to or instead of this configuration, the vacuum insulation material 81 may be installed in the portion that corresponds to the short side base portion 6 (the vacuum insulation material 81 and the insulation material 82 may be installed). In this case, the vacuum insulation material 81 may be installed closer to the storage space 2a side of the short side base portion 6, or, as shown in FIG. 12 , a vacuum insulation material 81 that is thinner than the other vacuum insulation materials 81 may be installed closer to the outside of the container body 2 of the short side base portion 6 so as to extend to the area surrounded by the short side base inner upper vertical wall portion 37, the short side base upper wall portion 39, and the short side base outer vertical wall portion 40. As described above, by providing vacuum insulation material 81 on the short side base portion 6, it is possible to avoid a situation in which the insulation performance of the short side base portion 6, which is continuous with the underside of the short side side wall portion 11 when the container 1 is assembled (and which is taller than the long side base portion 7 and forms the wall surface of the short side of the container 1 together with the short side side wall portion 11), becomes reduced.

[0059] 12, the vacuum insulation material 81 provided corresponding to the bottom wall portion 5 of the bottom wall constituent part 4 may be provided closer to the bottom wall base member 31 (fixed with double-sided tape or the like). In addition, the vacuum insulation material 81 of the short side side wall portion 11 and the vacuum insulation material 81 of the long side side wall portion 21 may be provided closer to the short side base member 12 or the long side base member 22 (fixed with double-sided tape or the like).

[0060] (c) In the above embodiment, the short-side base member 12, the short-side inner surface member 13, the long-side base member 22, the long-side inner surface member 23, the bottom wall base member 31, the bottom wall lower surface member 32, the lid main body 71, and the fasteners 72 are made of polypropylene. However, they may be made of other olefin-based resins (such as polyethylene) or synthetic resins other than olefin-based resins (such as ABS resin, AES resin, acrylic resin, polycarbonate, etc.). In the above embodiment, the heat insulating member 82 is made by injecting injection-type foamed polyurethane into each of the internal spaces 14, 24, and 33 and allowing it to foam and harden. However, for example, a foamed resin molded product that is pre-formed to fit the shape of each of the internal spaces 14, 24, and 33 and has a storage portion for storing the vacuum heat insulating material 81 may be installed in each of the internal spaces 14, 24, and 33 as the heat insulating member. Furthermore, a foamed resin other than foamed polyurethane may be used as the heat insulating member 82.

[0061] (d) In the above embodiment, the activated surface treatment is performed on the entire area of ​​the portions of the first member 61 and the second member 62 that define the internal spaces 14, 24, and 33, but it is sufficient that activated surface treated areas are provided on at least a portion of the portions of the first member 61 that define the internal spaces 14, 24, and 33 and at least a portion of the portions of the second member 62 that define the internal spaces 14, 24, and 33, and that the first member 61 and the second member 62 are connected via the heat insulating member 82. Also, although the first member 61 or the second member 62 and the vacuum heat insulating material 81 are (temporarily) fixed using double-sided tape, the first member 61 and the second member 62 and the vacuum heat insulating material 81 may be (temporarily) fixed by other methods such as adhesive or locking means.

[0062] In the above embodiment, the surfaces of the first member 61 and the second member 62 that define the internal spaces 14, 24, and 33 are subjected to an activated surface treatment in advance, thereby providing regions that are bonded to (adsorbed by) the heat insulating member 82. However, depending on the combination of the materials of the first member 61 and the second member 62 and the material of the injection-type heat insulating member 82 (for example, when the first member 61 and the second member 62 are made of ABS resin), the surfaces that define the internal spaces 14, 24, and 33 may become regions that are chemically adsorbed to the heat insulating member 82, even if the activated surface treatment is not applied in advance to the surfaces. In this case, the first member 61 and the second member 62 can be connected via the heat insulating member 82 without requiring a process of directly fixing (welding, gluing, etc.) the first member 61 and the second member 62 together.

[0063] (e) In the above embodiment, when the container body 2 is folded, the short-side sidewalls 11 are configured to be in the folded position above the long-side sidewalls 21 in the folded position, but the long-side sidewalls may be configured to be in the folded position above the short-side sidewalls in the folded position. Furthermore, instead of or in addition to the handles 51 provided on the short-side sidewalls 11, handles may be provided on the long-side sidewalls 21.

[0064] Furthermore, the container body 2 has the short-side sidewall portions 11 and the long-side sidewall portions 21 connected to the bottom wall constituent portion 4 so as to be rotatable and displaceable, but it is also possible to embody a container body in which, for example, one of the short-side sidewall portions 11 and the long-side sidewall portions 21 is connected to the bottom wall constituent portion 4 so as to be rotatable and the other is configured to be detachable from the bottom wall constituent portion 4, or a container body in which both the short-side sidewall portions 11 and the long-side sidewall portions 21 are configured to be detachable from the bottom wall constituent portion 4. In addition, it is also possible to embody a container body in which both the short-side sidewall portions 11 and the long-side sidewall portions 21 are configured so as not to be displaceable relative to the bottom wall constituent portion 4 (for example, a container body in which the portions corresponding to the short-side sidewall portions 11, the long-side sidewall portions 21, and the bottom wall base member 31 in the above embodiment are integrally formed, or a container body in which parts of the outer surfaces of the container body 2 on each short side are integrally formed with other portions of the container body 2).

[0065] Furthermore, the container can also be embodied as a container that includes a bottom wall component that is approximately rectangular in plan view, side wall components extending upward from each side edge of the bottom wall component, and a rectangular upper frame provided along the upper edge of the side wall component, and that includes a pair of opposing first side wall components, each having a lower wall component whose lower edge side is rotatably connected to the side edge of the bottom wall component, and an upper wall component whose upper edge side is rotatably connected to the upper frame and whose lower edge side is rotatably connected to the upper edge side of the lower wall component, and a pair of opposing second side wall components whose upper edge sides are rotatably connected to the upper frame, and that can be assembled into a box-shaped assembled state by rotating the second side wall components inward and folding the first and second side wall components toward the center of the bottom wall component. In addition, the present invention can be embodied in a container in which the lid is rotatably connected to the container body, or in a container that does not have a dedicated lid (for example, by stacking the container bodies of the above embodiment on top of each other, the upper container body serves as the lid). Incidentally, a folded container body 2 may be stacked on top of an assembled container body 2, and the folded container body 2 may be used as the lid. Furthermore, when the container body 2 is in a folded position in which the pair of long-side side walls 21 serving as the leading-folded side walls are folded toward the center of the bottom wall component 4 and the pair of short-side side walls 11 serving as the trailing-folded side walls are folded above the pair of long-side side walls 21, the vacuum insulation material 81 and the insulation member 82 form a (double or) triple layer area above and below, thereby improving the cold and heat retention properties. [Explanation of symbols]

[0066] 1...container, 2...container body, 2a...storage space, 3...lid body, 4...bottom wall component, 5...bottom wall portion, 6...short side base portion, 7...long side base portion, 11...short side side wall portion, 21...long side side wall portion, 51...handle portion, 61...first member, 62...second member, 81...vacuum insulation material, 82...insulation member.

Claims

1. a bottom wall component that is generally rectangular in plan view; a plurality of side wall portions that can be changed in position between an upright position in which the side wall portions are respectively erected above the respective side edges of the bottom wall portion and a folded position in which the side wall portions are folded toward a central portion of the bottom wall portion, A container that can be changed between an assembled state in which all of the side wall portions are in the upright position and a folded state in which all of the side wall portions are in the folded position, At least a predetermined one of the side wall portions and the bottom wall constituent portion includes a first member and a second member that forms an internal space between the first member and the second member, the first member and the second member are made of synthetic resin, A container characterized in that the internal space is provided with a vacuum insulation material and an insulation member made of foamed resin.

2. The heat insulating member is formed by injecting an injection-type foaming resin into the internal space and allowing it to foam and harden, The container described in claim 1, characterized in that the insulating material is arranged from the first member to the second member between the vacuum insulating material installed in the internal space and the first member and the second member in the inner and outer circumferential directions of the surface of the side wall portion on which the vacuum insulating material is provided that defines the storage space of the container, and an area is provided in which the insulating material is physically or chemically bonded to the first member and the second member.

3. the first member constituting the side wall portion constitutes an outer surface side of the side wall portion, and the second member constituting the side wall portion constitutes an inner surface side of the side wall portion, The first member of the predetermined side wall portion has a handle portion recessed on an outer surface side toward the internal space, The container according to claim 1 or 2, characterized in that the side wall portion having the handle portion is provided with the vacuum insulation material arranged so as to include an area that overlaps with the handle portion in the thickness direction of the side wall portion.

4. The container described in claim 3, characterized in that the vacuum insulation material is provided on the second member side in the internal space, and the insulation member is provided between the handle portion and the vacuum insulation material, and is constructed by injecting an injection-type foaming resin into the internal space and allowing it to foam and harden.

5. the side wall portion is connected to the bottom wall constituent portion so as to be rotatably displaceable; the side wall portions include a pair of opposing front-folded side wall portions that are first set to the folded position when the container is changed from the assembled state to the folded state, and a pair of opposing rear-folded side wall portions that are set to the folded position above the front-folded side wall portions that are set to the folded position, The rear folding side wall portion is in the folded position with the second member facing downward, 5. The container according to claim 4, wherein the handle is provided on the rear folding side wall.

6. The bottom wall component includes a bottom wall portion having a generally rectangular shape in a plan view, and base portions each protruding upward along a side edge of the bottom wall portion, The side wall portion is connected to the base portion so as to be rotatably displaceable between the upright position and the folded position, the bottom wall constituent portion includes the first member and the second member, the internal space of the bottom wall component extends to a portion corresponding to the bottom wall portion and a portion corresponding to the base portion, 2. The container according to claim 1, wherein the vacuum insulation material and the heat insulating member are provided in a portion of the internal space of the bottom wall component that corresponds to the predetermined base portion.

7. A container comprising a bottom wall component having a generally rectangular shape in a plan view and side wall components erected above each side edge of the bottom wall component, At least a predetermined one of the side wall portions and the bottom wall constituent portion includes a first member and a second member that forms an internal space between the first member and the second member, the first member and the second member are made of synthetic resin, The internal space is provided with a vacuum insulation material and a foamed resin insulation member, the first member constituting the side wall portion constitutes an outer surface side of the side wall portion, and the second member constituting the side wall portion constitutes an inner surface side of the side wall portion, The first member of the predetermined side wall portion has a handle portion recessed on an outer surface side toward the internal space, A container characterized in that the side wall portion having the handle portion is provided with the vacuum insulation material arranged so as to include an area that overlaps with the handle portion in the thickness direction of the side wall portion.

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