JP6159546B2 - Foamed synthetic resin container - Google Patents

Description

  The present invention relates to a foamed synthetic resin container for storing fruit vegetables, seafood and the like, and more specifically, even when stacked in multiple stages with the seafood stored therein, the bottom of the foamed synthetic resin container is destroyed. The present invention relates to a foamed synthetic resin container that can be prevented.

  Foamed synthetic resin containers made of foamed polystyrene and the like are widely used for storing fruit vegetables, seafood and the like because they are lightweight and have excellent heat insulation properties. The foamed synthetic resin container is composed of a container body and a lid, and is often used by being stacked in multiple stages. An example of the foamed synthetic resin container is shown in FIGS.

In the conventional foamed synthetic resin container 50 illustrated here, a convex portion 53 is provided around the upper end of the side wall 52 of the container body 51, and a concave portion in which the convex portion 53 is fitted to the lower peripheral edge portion of the lid 61. A groove 62 is provided around. By covering and pressing the lid body 61 over the opening of the container body 51, the convex portion 53 of the container body 51 and the concave groove 62 of the lid body 61 are fitted, and the lid body 61 opens the opening of the container body 51. It is attached to close.
The bottom surface of the container main body 51 is composed of a bottom main part 54 that contacts the ground when the container main body 51 is placed on a flat surface, and a bottom-up part 55 that is provided on the periphery of the main body 51 and is not grounded. Further, a concave portion 63 corresponding to a bottom main portion 54 formed in the container body 51 is provided on the upper surface side of the lid body 61. When the foamed synthetic resin containers 50 are stacked in multiple stages, the upper foamed synthetic resin is formed. The bottom main portion 54 of the container main body 51 of the resin container is fitted into the concave portion 63 of the lid 61 of the foamed synthetic resin container on the lower side so that the stacking property can be improved.

  When the above-mentioned conventional foamed synthetic resin containers 50 are stacked in multiple stages, as shown in FIG. 14, a bottom raising portion 55 for stack provided at the bottom peripheral edge of the container body 51 of the foamed synthetic resin container located at the lowermost stage. And a space is created between the bottom main part 54 and the other grounded bottom. At this time, when a large load is applied to the container main body 51, the bottom raising portion 55 is inclined, and this causes the side wall 52 of the container main body 51 and the peripheral edge of the lid body 61 to bulge outward from the container, as shown in FIG. In addition, cracks or cracks G occur in the vicinity of the raised portion 55, the central portion of the side wall 52, the peripheral portion of the lid 61, and the like, which is one of the causes for reducing the loading strength of the container.

  As a technique for preventing the occurrence of cracks and cracks as described above, Patent Document 1 describes, among the raised portions formed on the peripheral edge of the bottom surface, at least the central portion or the central vicinity portion of the two opposite sides of the bottom plate portion. It has been proposed to provide a load receiving bottom surface extension that is installed when the bottom surface is placed on a flat surface.

Japanese Patent No. 4733998

In order to solve the above-described problems, the present invention has the following foamed synthetic resin containers [1] to [ 4 ].
[1] A rectangular parallelepiped foamed synthetic resin container composed of a container body and a lid, and having a substantially rectangular bottom main part that is grounded when the container body is placed on a flat surface on the bottom surface of the container body. In the case of a foamed synthetic resin container having a bottom-up portion that is not grounded provided at the peripheral edge, the length of the long side of the container main body is in the vicinity of the center of both side ends on the long side of the bottom main part. A container having a length of 35 to 75% of the thickness, a width of 2 to 15% of the length of the short side of the container body, and a depth of 8 to 30% of the thickness of the bottom main part. A substantially rectangular cutout or a cutout extending in parallel with the long side of the main body is provided, and the ratio of the bottom surface main portion to the total bottom surface area is 55% or more, and is provided in the bottom surface main portion. The notch or the cutout is from the bottom side of the long side of the container body to the long side wall of the container body. Characterized in that are provided respectively from the inner positions spaced the least distance, foamed synthetic resin container.
[ 2 ] The thinning provided in the bottom main part of the container main body is provided at the long side side end of the bottom main part leaving an outer rib whose width is 50% or less of the width of the thinning. The foamed synthetic resin container as described in [1] above.
[ 3 ] The foamed synthetic resin container according to [1] or [2 ] above, wherein the container body is a polystyrene-based resin foam particle molded body having a density of 13 to 18 kg / m ³ .
[ 4 ] Any one of [1] to [3 ] above, wherein the container body has a long side length of 500 to 600 mm, a short side length of 300 to 400 mm, and a height of 70 to 180 mm . A foamed synthetic resin container as described in 1.

  The present invention has been made in view of the above-described problems of the prior art, and is a foamed synthetic resin container that does not damage the lowermost container body even when seafood is stored and stacked in multiple stages. Is to provide economically.

In order to solve the above-described problems, the present invention provides the following foamed synthetic resin containers [1] to [6].
[1] A rectangular parallelepiped foamed synthetic resin container composed of a container body and a lid, and having a substantially rectangular bottom main part that is grounded when the container body is placed on a flat surface on the bottom surface of the container body. In the case of a foamed synthetic resin container having a bottom-up portion that is not grounded provided at the peripheral edge, the length of the long side of the container main body is in the vicinity of the center of both side ends on the long side of the bottom main part. A container having a length of 35 to 75% of the thickness, a width of 2 to 15% of the length of the short side of the container body, and a depth of 8 to 30% of the thickness of the bottom main part. A foamed synthetic resin container, characterized by being provided with substantially rectangular cutouts or meat cutouts extending parallel to the long side of the main body.
[2] The foamed synthetic resin container as described in [1] above, wherein the ratio of the bottom main part to the total bottom area is 55% or more.
[3] The inner position where the notch or the cutout provided in the bottom main part of the container body is separated from the long side bottom of the container body by a distance equal to or greater than the thickness of the long side wall of the container body. The foamed synthetic resin container according to [1] or [2], wherein the foamed synthetic resin container is provided.
[4] The lightening provided in the bottom main part of the container main body is provided at the long side side end of the bottom main part leaving an outer rib having a width of 50% or less of the width of the lightening. The foamed synthetic resin container according to any one of [1] to [3] above.
[5] The foamed synthetic resin as described in any one of [1] to [4] above, wherein the container body is a molded polystyrene resin foam particle having a density of 13 to 18 kg / m ³ . container.
[6] Any of [1] to [5] above, wherein the container body has a long side length of 500 to 600 mm, a short side length of 300 to 400 mm, and a height of 70 to 180 mm. A foamed synthetic resin container as described in 1.

  In the above-described foamed synthetic resin container according to the present invention, since the bottom main part of the container main body is provided with a notch or a meat cutout (also referred to as “meat stealing”), a plurality of foamed synthetic resin products are provided. Even if the containers are stacked, destruction of the lowermost container body can be prevented. In addition, since it is provided with a notch or a cutout, it also leads to a reduction in raw materials, and even a container body made of a low-strength foamed synthetic resin, such as a low density due to improved fracture strength. Since the destruction can be prevented, the raw material cost can be further reduced, and the lightness can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is the figure which showed 1st Embodiment of the foaming synthetic resin container which concerns on this invention, Comprising: (a) is the perspective view which looked at the container main body from the bottom face side, (b) looked at the cover body from the upper surface side. It is a perspective view. It is the figure of the container shown in FIG. 1, Comprising: (a) is the perspective view which looked at the cover body from the lower surface side, (b) is the perspective view which looked at the container main body from the upper surface side. It is a bottom view of the container main body of the container shown in FIG. It is sectional drawing of the part which follows the AA line of FIG. It is sectional drawing of the part which follows the BB line of FIG. It is sectional drawing which showed a part of lowermost container at the time of stacking the container shown in FIG. 1 in multiple stages. It is the figure which showed 2nd Embodiment of the foam synthetic resin containers based on this invention, Comprising: (a) is the perspective view which looked at the container main body from the bottom face side, (b) looked at the cover body from the upper surface side. It is a perspective view. It is a bottom view of the container main body of the container shown in FIG. It is sectional drawing of the part which follows the CC line of FIG. It is sectional drawing of the part which follows the DD line | wire of FIG. It is sectional drawing which showed a part of lowermost container at the time of stacking the container shown in FIG. 7 in multiple stages. It is the figure which showed the conventional container made from a synthetic foam resin, Comprising: (a) is the perspective view which looked at the cover body from the lower surface side, (b) is the perspective view which looked at the container main body from the upper surface side. It is the figure of the conventional container shown in FIG. 12, Comprising: (a) is the perspective view which looked at the container main body from the bottom face side, (b) is the perspective view which looked at the cover body from the upper surface side. It is the side view which showed the state which accumulated the conventional container shown in FIG. 12 in multiple stages. It is sectional drawing which showed a part of container of the lowest stage at the time of stacking the conventional container shown in FIG. 12 in multiple stages.

  Hereinafter, embodiments of the foamed synthetic resin container according to the present invention will be described in detail with reference to the drawings.

  The foamed synthetic resin container of the present invention comprises a foamed synthetic resin container body and a lid, and the shape thereof is a rectangular parallelepiped. However, the rectangular parallelepiped shape in the present specification is not limited to a strict rectangular parallelepiped shape, and the cross-sectional shape thereof is slightly trapezoidal, slightly rhombusic, or a ridge line portion or corner of a foamed synthetic resin container It means that the part is rounded.

1st Embodiment of the foam synthetic resin container of this invention is shown in FIGS.
In the foamed synthetic resin container 10 according to the first embodiment, as shown in FIG. 1, a substantially rectangular bottom main part 12 that is grounded when the container body 11 is placed on a flat surface, and a peripheral part thereof. The bottom raised portion 13 that is not grounded is provided, and notches 14 and 14 of a specific size are provided in the vicinity of the center of both side ends on the long side of the bottom main portion 12. Further, a rectangular locking recess 22 capable of locking the bottom main part 12 of the container body 11 is provided on the upper surface of the lid 21. Therefore, when the container main body 11 and the lid body 21 are stacked in order, the bottom main part 12 of the container main body 11 is fitted into the locking recess 22 of the lid body 21, whereby the container main body 11 and the lower lid body 21 are fitted. Prevents misalignment and can be stacked firmly.

  The bottom main part 12 provided in the container body 11 is a part that stably supports the weight of the contents placed in the container and is grounded when placed on a flat surface so that no bottom-out occurs. And it is a part which fulfill | performs the effect | action as a latching convex part engaged with the latching recessed part 22 formed in the cover body 21, and the area ratio with respect to the bottom face total area of this bottom face main part 12 is 55% or more. Is preferably 60% or more, and particularly preferably 70% or more. When the area ratio with respect to the total area of the bottom surface of the bottom surface main part is within the above range, the weight of the contents placed in the container can be more stably supported, and the container can be moved by a conveyor or the like. The meandering of the container can also be prevented. Note that the area of the bottom main part is, of course, the area obtained by subtracting the area of a cutout or a cutout in the substantially rectangular bottom main part.

  The lid 21 has a function of sealing the inside of the container body 11. As shown in FIG. 2, the container main body 11 is formed by fitting the fitting convex portion 15 formed on the upper end of the side wall of the container main body 11 into the fitting concave groove 23 provided on the lower peripheral edge of the lid body 21. Can be sealed. Note that the inner surface 15a of the fitting convex portion 15 and the inner surface 11a of the container body 11 may be formed continuously in the same plane as shown in FIG. 2 and the like, and a step is formed between the inner surface 15a and the inner surface 11a. A part may be provided.

  In the present invention, the notch 14 provided in the bottom main part 12 of the container body 11 is formed in a substantially rectangular shape extending in parallel with the long side of the bottom main part 12 as shown in FIG. The length l is 35 to 75% of the long side length L of the container body 11, the width w is 2 to 15% of the short side length W of the container body 11, and the depth thereof. h is formed to 8 to 30% of the thickness of the bottom main part (usually, the depth h shown in FIG. 4 is formed to a depth equivalent to the depth H of the bottom raised part 13).

  When the cutouts 14 satisfying the above conditions are provided near the center of both end portions on the long side of the bottom main part 12 of the container body 11, the foamed synthetic resin containers 10 containing seafood and the like are stacked in multiple stages. However, since the buckling strength of the lowermost container main body 11 is increased, the side wall and the peripheral bottom of the container main body 11 are not easily damaged. That is, even when an impact such as vibration is applied during the operation of loading the foamed synthetic resin containers 10 stacked in multiple stages or during trucking, a large amount of load is concentrated on the peripheral edge of the lowermost container body 11, Alternatively, even when the loading load is concentrated on the peripheral edge of the lowermost container body 11 during the loading and storage, the peripheral bottom is widened by the presence of the notch 14 provided in the bottom main part 12 as shown in FIG. As a result, the floor is attached to the floor, and the concentrated load applied to the peripheral portion of the container body 11 can be received by a wide area of the bottom surface of the container body. Therefore, the load can be dispersed, the bending stress and the shear stress generated at the peripheral portion can be relaxed, and the container body 11 can be prevented from being damaged.

  When the length l of the notch 14 is less than 35% of the length L of the long side of the container body 11, and / or the width w of the notch 14 is shorter than the short side of the container body 11. When the width is less than 2% of the length W, the area per bottom of the bottom surface of the container body cannot be increased as intended depending on the use situation, and the effect of preventing the damage to the container body 11 by the above mechanism can be obtained. There is a risk of becoming insufficient.

  Conversely, when the length l of the notch 14 exceeds 70% of the length L of the long side of the container body 11, the width w of the notch 14 is 15% of the length W of the short side of the container body 11. In the case of exceeding the area, the area ratio with respect to the total area of the bottom surface of the bottom surface main portion 12 becomes small, and the weight of the contents placed in the container may not be stably supported, and the peripheral bottom is assumed in the above mechanism. There is a risk that external deformation will occur and the intended purpose cannot be achieved.

  From the above viewpoint, the notch 14 is more preferably 40-60% of the length L of the long side L of the container body 11, and 45-55%. Particularly preferred. Further, the width w is more preferably 4 to 12% of the length W of the short side of the container body 11, and particularly preferably 5 to 10%.

  Moreover, the depth (height of the bottom face main part 12) H of the bottom raising part 13 of the container main body 11 is 2-6 mm from the point of intensity | strength and functionality, and 3-5 mm is preferable. The depth (height of the bottom main portion 12) H of the bottom raised portion 13 is appropriately determined within the above range depending on the material and density of the container body 11 and / or the lid 21. If the depth H is shallow, the container body 11 and the lower lid body 21 cannot be locked, and when foamed synthetic resin containers are stacked, there is a possibility that the occurrence of displacement cannot be prevented. In addition, if the depth h of the notch 14 provided in the bottom main part 12 of the container body 11 is too large, even if the notch 14 is formed, the peripheral bottom of the container body cannot be bottomed on the floor, and the load is dispersed. If it is too small, the intended purpose may not be achieved. From the above viewpoint, the depth h of the notch 14 is preferably 10 to 25%, more preferably 12 to 20% of the thickness of the bottom main part.

  In the present specification, the length 1 of the notch 14 is the center length in the width direction of the notch as shown in FIG. The width w refers to the arithmetic average of the measured values at the three points at the center and both sides in the length direction excluding the inclined portion. The depth h is an arithmetic average of measured values at three points in the center in the width direction of the notch and in the center in the length direction and on both sides. In addition, the thickness of the bottom main part is usually designed to be a uniform thickness, but when there is a thin thickness, the arithmetic average (average of five locations) of the thicknesses in the vicinity of the corners and the center of the four sides is used as the bottom surface. The thickness of the main part.

  Further, in the present invention, each of the cutouts 14 provided in the bottom main part 12 of the container main body 11 is formed on the long side of the container body from the long side bottom O of the container body as shown in FIG. It is preferable to be provided from an inner position separated by a distance equal to or greater than the thickness T of the side wall, and further, an inner position separated by a distance of 1.1 times or more the thickness T of the long side wall of the container body. Is more preferably provided. By providing the notches 14 from the above positions, a plurality of foamed synthetic resin containers are stacked, and when the concentrated load is applied to the peripheral part of the lowermost container body, the bottom of the peripheral bottom part of the container body is further layered. It is easy and can efficiently prevent the lowermost container body from being damaged.

  Furthermore, in the container main body 11 of the present invention, as shown in FIGS. 1 and 2, the concave handle portion 16 is formed at the outer lower central portion of the opposite side wall of the container main body 11. preferable. When the handle portion 16 is provided, it is easy to carry the foamed synthetic resin container even in a state where seafood is stored. Further, in the side wall of the portion where the handle portion 16 is provided, the thickness of the side wall above the portion where the handle portion 16 is provided is preferably thicker than the left and right portions of the handle portion. . This ensures the strength of the side wall on the short side of the container body 11.

Next, a second embodiment of the foamed synthetic resin container of the present invention is shown in FIGS.
In the foamed synthetic resin container 30 according to the second embodiment, instead of the notch 14 shown in the first embodiment, as shown in FIG. The difference is that a specific size of the lightening 33, 33 is provided in the vicinity of the center of both side end portions on the side, and other configurations are the same as those of the container according to the first embodiment. Therefore, the same parts are denoted by the same reference numerals.

  As shown in FIG. 8, the lightening 33 provided in the bottom main part 32 of the container main body 31 is formed in a substantially rectangular shape extending in parallel with the long side of the bottom main part 32, and its length l is the container. The length L of the long side of the main body 32 is 35 to 75%, preferably 40 to 60%, and more preferably 45 to 55%. The width W is 2 to 15% of the side length W, preferably 4 to 12%, more preferably 5 to 10%, and the depth h is 8 to 30 of the thickness of the bottom main part. % (Generally, the depth h shown in FIG. 9 is formed to a depth equivalent to the depth H of the raised bottom portion 13), preferably 10 to 25%, more preferably 12 It is formed to a depth of ˜20%.

  In the present specification, the length 1 of the lightening 33 refers to the length in the center in the width direction of the lightening. The width w refers to the arithmetic average of the measured values at the three points at the center and both sides in the length direction. The depth h is an arithmetic average of measured values at three points in the center in the length direction and the center in the length direction, and both sides.

  Further, as shown in FIG. 10, each of the lightenings 33 provided on the bottom main part 32 of the container body 31 has a thickness T of the long side wall of the container body from the long side bottom O of the container body. It is preferable to be provided from an inner position separated by the above distance, and further, provided from an inner position separated by a distance of 1.1 times or more of the thickness T of the long side wall of the container body. It is more preferable.

  Further, the lightening 33 provided on the bottom main part 32 of the container main body 31 has a width n of 50% or less of the width w of the lightening at the long side side end of the bottom main part 32, and further 35% or less. In particular, it is more preferable to leave the outer rib 34 having a width of 25% or less from the viewpoint of easily crushing the outer rib and increasing the bottomed area of the peripheral bottom of the container body.

  By providing the lightening 33 satisfying the above conditions in the vicinity of the center of the long side of the bottom main part 32 of the container body 31, the foamed synthetic resin containers 30 containing seafood are stacked in multiple stages. However, since the buckling strength of the lowermost container body 31 is increased, the side wall and the peripheral bottom of the container body 31 are not easily damaged. That is, even when a large amount of load is concentrated on the peripheral portion of the lowermost container body 31 of the foamed synthetic resin containers 30 stacked in multiple stages, as shown in FIG. As a result, the outer rib 34 is crushed and the bottom of the peripheral edge bottoms over the wide range, and the concentrated load applied to the peripheral edge of the container main body 31 can be received over a wide area of the bottom of the container main body. Therefore, the load can be dispersed, the bending stress and the shearing stress generated at the peripheral portion are alleviated, and the container body 31 can be prevented from being damaged.

  Although there is no restriction | limiting in the synthetic resin which comprises the foamed synthetic resin container based on this invention of an above-described structure, For example, polyolefin resin, such as styrene resin, such as rubber-modified polystyrene and polystyrene, polyethylene resin, and polypropylene resin, etc. The general-purpose resin is preferably exemplified, and among these, a styrene resin is particularly preferable because it is easily foamed and has high rigidity. In addition, a mixture or copolymer of the styrene resin and the polyolefin resin is preferable because it is easily foamed, has high rigidity, is excellent in elasticity, and can improve the brittleness of the styrene resin. Moreover, as a foaming form, since it can manufacture easily even if it is a partial uneven | corrugated shape and a big shape container, the foaming particle molded object which filled the foaming particle in the type | mold and was heat-molded is preferable.

Foamed synthetic resin container of the present invention, when composed of polystyrene resin foamed bead molded article, the density of the container body and the lid is preferably 13~30kg / m ^3, more preferably 13~18kg / m ^3. Moreover, it is also one of the preferable aspects that the foam synthetic resin container which consists of a polystyrene-type resin expanded particle molded object sets the density of a container main body to 13-18 kg / m < ³ > at least. A foamed synthetic resin container having a density of 13 to 30 kg / m ³ of a foamed synthetic resin container made of a polystyrene-based resin expanded particle molded body is excellent in lightness, heat insulation, and rigidity. In particular, a foamed synthetic resin container having a density of 18 kg / m ³ is particularly excellent in lightness and has sufficient rigidity as a foamed synthetic resin container. Conventionally, those having a density of 18 kg / m ³ or less have been difficult to use due to inferior strength. However, as described above, the bottom main part of the container body is provided with a notch or a cutout of a specific size. Therefore, it can be suitably used for stacking in a state where contents of 10 kg or more are stored.
In the foamed synthetic resin container of the present invention, the container body preferably has a long side length of 500 to 600 mm, a short side length of 300 to 400 mm, and a height of 70 to 180 mm.

  Hereinafter, the foamed synthetic resin container of the present invention will be described in detail with reference to examples. However, the present invention is not limited to this example.

Example 1
By using in-mold molding using polystyrene resin expanded particles, density 17.5 kg / m ³ , long side length 550 mm, short side length 350 mm, height 120 mm, long side direction side wall thickness 25 mm, short side direction A container body having a side wall thickness of 15 mm and a container bottom thickness of 20 mm, and a bottom raised portion provided with a rectangular bottom main portion of a lower surface of 500 mm × 300 mm, a length of 270 mm, a width of 25 mm, and a depth at the periphery A container main body (container main body having the configuration shown in FIGS. 1 to 5) having a notch of 5 mm which is the same as the depth of was prepared.

-Example 2-
By using in-mold molding using polystyrene resin expanded particles, density 17.5 kg / m ³ , long side length 550 mm, short side length 350 mm, height 120 mm, long side direction side wall thickness 25 mm, short side direction A container body having a side wall thickness of 15 mm and a container bottom thickness of 20 mm, and a rectangular bottom surface main portion of 500 mm × 300 mm on the lower surface, leaving an outer rib of 8 mm width, length 270 mm, width 25 mm, depth The container main body (container main body of the structure shown in FIGS. 7-10) which formed the 5 mm of meat removal which is the same as the depth of the bottom raising part provided in the peripheral part was created.

-Comparative Example 1-
By using in-mold molding using polystyrene resin expanded particles, density 17.5 kg / m ³ , long side length 550 mm, short side length 350 mm, height 120 mm, long side direction side wall thickness 25 mm, short side direction A container body having a side wall thickness of 15 mm and a container bottom thickness of 20 mm, and having a bottom main part of a rectangular shape of 500 mm × 300 mm on the bottom surface and a raised bottom part having a depth of 5 mm provided on the peripheral edge thereof ( A conventional general container body) was created.

-Comparative Example 2-
By using in-mold molding using polystyrene resin expanded particles, density 17.5 kg / m ³ , long side length 550 mm, short side length 350 mm, height 120 mm, long side direction side wall thickness 25 mm, short side direction A container body having a side wall thickness of 15 mm and a container bottom thickness of 20 mm, wherein a bottom surface main portion of a rectangular bottom surface of 500 mm × 300 mm is provided with a bottom surface extension portion having a length of 90 mm and a width of 25 mm (Patent No. 1) The same thing as the container main body of the structure described in 4739988 was created.

The buckling strength and the deflection of the foamed synthetic resin containers prepared in Examples and Comparative Examples were measured as follows.
-Measuring method of buckling strength and deflection-
Using a compression testing machine (Instron Universal Testing Machine), place one foamed synthetic resin container horizontally and compress it in the height direction of the foamed synthetic resin container at a compression speed of 10 mm / min. The container was pressed until it was broken, and the maximum load at the time of breaking the container body was taken as the buckling strength. The amount of deflection at the maximum load was defined as deflection (mm). The test environment was a room temperature of 23 ° C. and a humidity of 50% RH.
The measurement results are shown in Table 1.
The strength ratio was obtained by dividing the buckling strength [N] of the foamed synthetic resin container obtained in Examples and Comparative Examples by the buckling strength 5049 [N] of the foamed synthetic resin container of Comparative Example 1. The value is expressed as a percentage.

  The above-described foamed synthetic resin container according to the present invention accommodates seafood and the like, and even when stacked in multiple stages, the lowermost container body will not be damaged. It can be widely used as a container.

DESCRIPTION OF SYMBOLS 10 Foamed synthetic resin container 11 Container main body 12 Bottom main part 13 Bottom raising part 14 Notch 15 Fitting convex part 16 Handle part 21 Lid 22 Locking concave part 23 Fitting concave groove 30 Foamed synthetic resin container 31 Container main body 32 Bottom face Main part 33 Meat removal 34 Outer rib

Claims (4)

A rectangular parallelepiped foamed synthetic resin container comprising a container main body and a lid, and a substantially rectangular bottom main part that contacts the bottom surface of the container main body when the container main body is placed on a flat surface, and its peripheral edge In a foamed synthetic resin container having a bottom-up portion that is not grounded provided in the portion, the length is 35, which is the length of the long side of the container main body, in the vicinity of the center of both end portions on the long side of the bottom main portion. The length of the container body, which is ˜75% in length, the width is 2 to 15% of the short side length of the container body, and the depth is 8 to 30% of the thickness of the bottom main part. A substantially rectangular cutout or a cutout extending in parallel with the side is provided, and the ratio of the bottom main part to the total bottom surface area is 55% or more, and the cutout provided in the bottom main part or The thickness is less than the thickness of the long side wall of the container body from the bottom side of the long side of the container body. Characterized in that the inner side at a distance of a position are respectively provided, foamed synthetic resin container. The thinning provided in the bottom main part of the container body is provided on the long side side end of the bottom main part leaving an outer rib having a width of 50% or less of the width of the thinning. The foamed synthetic resin container according to claim 1 . It said container body, characterized in that the density is a polystyrene resin foamed bead molded article of 13~18kg / m ^3, the foamed synthetic resin container according to claim 1 or 2. The foamed synthetic resin according to any one of claims 1 to 3, wherein the container body has a long side length of 500 to 600 mm, a short side length of 300 to 400 mm, and a height of 70 to 180 mm. Made container.

Images