JP6111112B2 - Packing container - Google Patents

Description

  The present invention relates to a packing container for storing and packing an irregularly shaped agricultural product, and more particularly to a packing container suitable for packing root vegetables or stem vegetables.

  2. Description of the Related Art Conventionally, packing containers for packing these agricultural products have been used for use in logistics such as transportation and storage of agricultural products. As such a packing container, it is common to use a foamed resin packing container including a container body that opens upward and a lid that can be fitted to the opening end of the container body.

  For example, in Patent Document 1, a storage recess for storing agricultural products and the like is formed in the container body of a packaging container, and the bottom surface of the storage recess is a large number of plane hexagons that are defined in a honeycomb shape by rib-shaped protrusions. A honeycomb structure is formed by forming the recesses. Thus, by providing a rib-like convex portion on the bottom surface of the storage concave portion, the thickness of the bottom portion is made thinner than the original bottom portion while maintaining the strength of the container body, and it is possible to contribute to weight reduction of the container. Yes.

Japanese Patent Application Laid-Open No. 2011-73689

  However, the rib-shaped convex portion formed on the bottom surface of the storage concave portion of such a packaging container is hard for the purpose of securing the strength of the container body, for example, root vegetables such as lotus root, potatoes (unshaped agricultural products) In the case of transporting by directly feeding, the surface of the root vegetable comes in contact with the rib-like convex portion in a spot manner, and the surface of the root vegetable is rubbed. Such rubbing scratches may cause stain-like discoloration on the surface of root vegetables. When discoloration occurs on the surface of root vegetables, there may be a problem that the commercial value of root vegetables decreases. In addition, when stem vegetables such as green onions are packed in such a packing container, the stem vegetables roll while the packing container is moving and the like, causing a problem that the surface is damaged and the commercial value is lowered.

  In particular, when the above-mentioned root vegetables are stored in the storage recess of the container body and then crushed ice is added to keep the root vegetables cool, the load applied to the surface of the root vegetables in contact with the bottom surface of the storage recess is reduced by the weight of the root vegetables. In addition, the above-mentioned problem becomes remarkable because of the weight of crash ice.

  In view of such a point, it may be desirable that the bottom surface of the storage recess is not provided with a rib-like convex portion and the bottom surface of the storage recess is preferably flat as in the past. However, since the bottom surface of the storage recess makes point contact or line contact with the surface of the root vegetables and stem vegetables (curved surface), they cannot be restrained, and the surface of the root vegetables and stem vegetables are scratched. And rolling scratches may occur.

  The present invention has been made in view of such problems, the purpose of which, when packing and transporting root vegetables such as lotus root, potatoes and stem vegetables such as leeks, An object of the present invention is to provide a packaging container that can be transported without damaging the surface of root vegetables and stem vegetables.

  In order to achieve the above object, a packaging container according to the present invention comprises a container body in which a storage recess for storing root vegetables or stem vegetables is formed, and a lid that can be attached to the opening of the storage recess. In the packaging container, a plurality of ridges are formed along one direction on the bottom surface of the storage recess of the container body, and the ridges are stored in the root vegetables or stem vegetables, It is characterized by being deformable according to the shape of the root vegetable or stem vegetable.

  The packaging container of the present invention configured as described above, when root vegetables or stem vegetables are stored in the storage recess of the container body, the root vegetables and stem vegetables are formed of a plurality of ridges formed on the bottom surface of the storage recess. Placed on top. Then, the plurality of ridges are pressed by the weight of root vegetables and stem vegetables, and deformed according to the shape of the root vegetables and stem vegetables by this pressing force to support the root vegetables and stem vegetables. For this reason, a large load does not act on the surface of the root vegetables and stem vegetables, and the root vegetables and stem vegetables adhere in a wide range according to the deformed surface of the plurality of ridges (container The contact area of the root vegetable or stem vegetable surface to the main body is increased compared to the previous one). As a result, the surface of root vegetables and stem vegetables can be prevented from being scratched and scratched, and discoloration caused by this can be prevented. In particular, after root vegetables are stored in the storage recesses of the container body and crushed ice is added to keep the root vegetables chilled, the multiple ridges are formed into the shape of root vegetables due to the weight of the root vegetables and crushed ice. Since it deform | transforms further according to it, the adhesive force of root vegetables and a some protruding item | line increases further, As a result, the effect mentioned above can be anticipated further.

  In the present invention, “being deformable according to the shape of the root vegetable” means that a plurality of ridges are deformed by the weight of at least the root vegetable or the stem vegetable in a state in which the root vegetable or the stem vegetable is stored. This means that the material and shape are configured. In addition, the plurality of ridges are deformed according to the shape of the root vegetables or stem vegetables, and if the above-described effects can be expected, the ridges do not necessarily need to be elastically deformed, and the recesses together with the ridges are elastically deformed. You may do it. If multiple ridges are elastically deformed, when the root vegetables or stem vegetables are taken out, the multiple ridges deformed by their restoring force will return to their original shape, so the packaging container can be reused. From the viewpoint of

  Moreover, as a preferable specific aspect of the packaging container according to the present invention, the packaging container is formed in a rectangular shape having a long side direction and a short side direction, and the plurality of protrusions are along the long side direction. Is formed. In the packaging container configured in this way, since a plurality of ridges are formed in accordance with the shape of the root vegetables or stem vegetables having the longitudinal direction, the root vegetables or the stem vegetables are long areas of the plurality of protrusions. Since the contact pressure can be reduced, the contact pressure is reduced, and the occurrence of scratches such as scratches and rolling scratches can be further suppressed. Furthermore, when the packaging container is lifted by the plurality of ridges formed along the long side direction, bending of the long side direction of the container can be suppressed.

  As another preferred embodiment, the plurality of ridges are further formed on the back surface of the lid that covers the opening of the storage recess. In the packaging container configured as described above, when root vegetables or stem vegetables are transported in the packaging container, for example, the root vegetables or the stem vegetables are applied to the back surface of the lid by applying an impact to the packaging container during the movement. Even if the root vegetables or stem vegetables are pushed into the container body with the lid and come into contact with the back surface during packing, the plurality of ridges formed on the back surface of the lid covering the storage recess Since it is deformed and absorbed according to the shape of root vegetables or stem vegetables, it is possible to prevent the surface from being damaged.

  From such a viewpoint, as a preferred embodiment, the opening of the storage recess is rectangular in plan view, and the side of the container body near the corner of the opening is for removing the lid. A recess is formed. In the packaging container comprised in this way, a lid can be easily removed by inserting a finger, for example, into the recess formed on the side surface of the container body. In particular, when the concave portion is formed to be deviated with respect to the center of the container body, the lid body can be prevented from being damaged when the lid body is lifted, and the lid body can be removed more easily.

  Furthermore, as another preferable specific aspect of the packaging container according to the present invention, the plurality of ridges are formed on the inner surface of the storage recess from the opening to the bottom surface. In the packaging container configured as described above, when the root vegetables or stem vegetables are stored in the packing container and transported, even if the root vegetables or stem vegetables contact the inner surface of the storage recess, the container body Since the plurality of ridges formed along the bottom surface from the opening to the inner surface of the shell deform and absorb according to the shape of the root vegetables and stem vegetables, the surface of the root vegetables and stem vegetables can be damaged. Can be prevented.

  The packaging container of the present invention can be transported without damaging the surfaces of root vegetables and stem vegetables when packing and transporting root vegetables such as lotus root and potatoes or stem vegetables such as long onions.

The perspective view of the decomposition | disassembly state which shows one Embodiment of the packaging container which concerns on this invention. The perspective view which shows the state which piles up the packaging container of FIG. (A) is a plan view of the lid of the packaging container shown in FIG. 1, (b) is a right side view of (a), (c) is a front view, (d) is a back view, and (e) is a view of (a). AA line sectional drawing, (f) is a BB line expanded sectional view, (g) is a CC line expanded sectional view. The container main body which the cover body of FIG. 1 fits is shown, (a) is a top view, (b) is DD sectional view taken on the line of (a), (c) is a front view of (a), (d) (A) EE sectional view taken on the line, (e) is the FF line arrow side view of (a). The G section principal part enlarged view of FIG.4 (b). The principal part sectional drawing of the state which the fitting part of the cover body and the container main body left | separated. FIG. 7 is an essential part cross-sectional view showing a fitting operation state between the lid of FIG. FIG. 7 is an essential part cross-sectional view showing a state in which the lid of FIG. 6 and the container main body are fitted. FIG. 7 is an essential part cross-sectional view showing the positional relationship between the air vent of the lid of FIG. 6 and the container body. FIG. 10 is an essential part cross-sectional view showing an operating state of the air vent part and the container body of the lid body of FIG. 9. It is operation | movement explanatory drawing when accommodating root vegetables in the packing container of this embodiment, (a) is sectional drawing of the some protruding item | line formed in the bottom face, (b) is a deformation | transformation sectional drawing when it contacts, (c) ) Is a modified sectional view when root vegetables contact a plurality of ridges formed on the bottom surface, and (d) is a modified sectional view of the plurality of ridges formed on the side surface.

  Hereinafter, one embodiment of a packing container concerning the present invention is described in detail based on a drawing. FIG. 1 is a perspective view of an exploded state of the packaging container according to the present embodiment, and FIG. 2 is a perspective view showing a state in which the packaging containers of FIG.

  3 (a) is a plan view of the lid of the packaging container shown in FIG. 1, (b) is a right side view of (a), (c) is a front view, (d) is a back view, and (e) is (a) ) Is a cross-sectional view taken along the line AA of FIG. 5B, FIG.

  4A and 4B show a container body to which the lid of FIG. 1 is fitted, wherein FIG. 4A is a plan view, FIG. 4B is a sectional view taken along line DD of FIG. , (D) is a sectional view taken along line EE of (a), (e) is a side view taken along line FF of (a), and FIG. It is.

  In FIGS. 1 and 2, a packaging container 1 according to the present embodiment is a molded container for storing, storing and transporting root vegetables such as lotus root or stem vegetables such as long spring onion as an irregular shaped agricultural product. It is a container that can be kept cold according to the condition. As shown in FIG. 1, the packaging container 1 includes a container body 10 and a lid 30. The container main body 10 and the lid body 30 are made of foamed resin, such as polystyrene, styrene-modified polyolefin resin, high impact polystyrene, styrene-ethylene copolymer, styrene-maleic anhydride copolymer, styrene-acrylonitrile copolymer. Various synthetic resin foams such as polystyrene resins such as coalescence, polyolefin resins such as polyethylene, polypropylene, and ethylene-vinyl acetate copolymer, and polyester resins such as polyethylene terephthalate can be used.

  Among these, a molded body by bead foaming of polystyrene or styrene-modified polyolefin resin is preferably used. The styrene-modified polyolefin resin is obtained by impregnating and polymerizing a polyolefin resin particle with a styrene monomer. Among the styrene-modified polyolefin resins, a styrene-modified polyethylene resin is preferable, for example, a styrene component The ratio is 40 to 90% by weight, preferably 50 to 85% by weight, more preferably 55 to 75% by weight.

  Further, the expansion ratio of the polystyrene foam is preferably 30 to 80 times. The foamed resin used in the packaging container 1 of the present embodiment has a higher foaming ratio than the conventional one. By increasing the expansion ratio in this way, the structure is more easily crushed and has an excellent buffering effect when a load is applied compared to the conventional expansion ratio.

  As shown in FIGS. 1 to 5, the container body 10 has a rectangular shape in a plan view having a long side direction and a short side direction, and is upward by four wall portions 10 a and 10 b having long sides and short sides. An opening 11 having an opening is formed. A storage recess 12 for storing stem vegetables including root vegetables such as lotus roots and potatoes and green onions such as long green onions is formed inside the container body 10 through an opening (opening end) 11. Has been. The lotus roots and potatoes mentioned as an example are irregularly shaped agricultural products such as thickness, length and bending.

  The container body 10 having a rectangular shape in plan view accommodates root vegetables and stem vegetables by the long side walls 10a and 10a and the short side walls 10b and 10b rising upward along the four sides of the outer periphery. A recess 12 is formed. On the upper part of the four wall portions 10a, 10b rising from the bottom surface of the container body 10, there are all the step portions 13 on the outer peripheral side that are recessed from the upper surface and the fitting convex portions 14 that protrude upward on the inner peripheral side of the step portion 13. It is formed over the circumference. The fitting projection 14 has a flat upper surface, and fitting ridges 14a and 14b that are recessed in a circular arc shape are formed on the rising surface on the outer peripheral side and the rising surface on the inner peripheral side. The outer fitting groove 14a and the inner fitting groove 14b are formed at the same depth. In the present embodiment, the width of the fitting recess is set to about 4 to 5 mm, and the depth is set to about 1 to 2 mm.

  In the present embodiment, a plurality of ridges 15 are formed on the bottom surface of the storage recess 12 of the container body 10 along the long side direction (one direction) of the container body 10. The ridge 15 is formed in a wave shape in which the cross section is a continuous concave arc and convex arc. The plurality of ridges 15 are elastically deformed and dented when root vegetables and stem vegetables are stored in the storage recess 12 to increase the contact area between the root vegetables and stem vegetables, thereby increasing their adhesion. At the same time, when the root vegetables and stem vegetables are moved by transportation or the like, the ridges 15 are deformed and have a function of absorbing impacts and the like. When the container body 10 is molded, the density of the bottom of the container generally tends to be high. Therefore, providing the ridges 15 can facilitate deformation as compared with a flat surface.

  In the present embodiment, the radius of curvature of the arc of the cross section of the ridge 15 is set to 5 to 10 mm (for example, 7.5 mm), the pitch is set to 15 to 20 mm (for example, 18 mm), and the number of the ridges 15 is set to nine. The height of the ridges 15 is set to 2 mm to 5 mm (for example, 3 mm). In addition, the dimension set in this way is set according to the material of the packaging container, the expansion ratio, and the like so as to satisfy the above-described function.

  Moreover, in this embodiment, it is suitably avoided that a spot-like load acts on the surface of the root vegetables or the stem vegetables stored in the storage recessed part 12 by setting it as the protruding item | line which combined such an arc. For example, the top of the ridge may be a curved shape other than an arc.

  On the side surface (inner side surface) on the inner peripheral side of the wall 10a on the long side of the storage recess 12, a plurality of ridges 16 and 17 are directed from the opening 11 of the storage recess 12 toward the bottom (in the vertical direction). Formed). The plurality of ridges 16 formed along the long side direction are formed as a set of a plurality of ridges, and a flat side surface is formed between each set. In the present embodiment, two sets of four ridges 16 are formed on the inner side surface along the long side direction, and one set of three ridges 16 is formed at the center, forming a total of five sets. Has been. Although not shown in the drawing, the plurality of ridges 16 are similarly formed on the opposing side surfaces.

  A plurality of ridges 17 are formed on the inner peripheral side surface (inner side surface) of the wall 10b on the short side of the storage recess 12 from the opening 11 of the storage recess 12 toward the bottom surface (along the vertical direction). Has been. The plurality of ridges 17 are formed along the vertical direction over substantially the entire width of the side surface on the short side. In the present embodiment, nine ridges 17 are formed. Although not shown in the drawing, the plurality of ridges 17 are similarly formed on the inner surface on the opposite short side. The plurality of ridges 16 and 17 formed on the side surface of the storage recess 12 are basically set to the same dimensions as the ridges 15 formed on the bottom surface, but the radius of curvature, pitch, height of the arc, The number and the like are appropriately set according to the size and shape of the root vegetables or stem vegetables, the dimensions of the packaging container, and the like.

  The lid body 30 fitted and attached to the opening 11 of the container main body 10 in which the storage recess 12 is formed in this way is formed with a wall portion 31 that falls downward along the outer periphery. The wall portion 31 includes an outer peripheral edge portion 32 from the outer peripheral side, a groove portion 33 that opens downward, and an inner peripheral edge portion 34. The height of the inner peripheral edge 34 is larger than the height of the outer peripheral edge 32, and the inner peripheral edge 34 protrudes downward from the outer peripheral edge 32. On the inner peripheral surface where the outer peripheral edge portion 32 falls and on the outer peripheral surface where the inner peripheral edge portion 34 falls, a fitting ridge 32a having an arcuate cross section and a fitting ridge 34a are formed facing each other. ing. The fitting ridges 32a and 34a correspond to the fitting ridges 14a and 14b of the container body 10 and are formed in the same cross-sectional shape.

  The stepped portion 13 and the fitting convex portion 14 of the container body 10 are fitted to the outer peripheral edge portion 32, the groove portion 33, and the inner peripheral edge portion 34 of the lid body 30 thus configured, The opening 11 can be closed with the lid 30. Specifically, the fitting convex part 14 which protrudes above the container main body 10 is inserted in the groove part 33 between the outer peripheral edge part 32 and the inner peripheral edge part 34 of the cover body 30, and the fitting convex stripes 32a, 34a. Are fitted into the fitting recesses 14a and 14b, and both are coupled.

  In addition, on the back surface of the lid 30, a plurality of ridges 35 are formed along the long side direction on the flat surface of the center portion on the inner peripheral side of the wall portion 31 protruding downward from the outer periphery. The plurality of ridges 35 are also basically a concave arc, similar to the plurality of ridges 15 formed on the bottom surface of the storage recess 12 of the container body 10 and the plurality of ridges 16 and 17 formed on the side surfaces. Convex arcs are formed in a continuous wave shape, with the same radius of curvature, pitch, and uneven height, and are formed with 10 ridges that are more than the multiple ridges 17 formed on the side surface in the short side direction. Has been.

  As described above, the plurality of ridges 15 and 35 are formed along the long side direction on the bottom surface of the container main body 10 and the back surface of the lid body 30. In the packaging container 1 configured in this manner, a plurality of ridges are formed in accordance with the shape of the root vegetables or stem vegetables having the longitudinal direction. Since it can be supported by a long area of 35, the contact pressure is reduced, and the occurrence of scratches such as scratches and rolling scratches can be further suppressed.

  Moreover, when the packaging container 1 is lifted by the plurality of ridges 15 formed along the long side direction of the container body 10, it is possible to suppress bending of the container body 10 in the long side direction. Further, the plurality of protrusions 35 formed along the long side direction of the lid body 30 remove the lid body 30 to be described later from the container body in the long side direction of the lid body 30 when releasing the fitted state. Deflection can be suppressed.

  An air vent slit 36 is further formed on the back surface of the lid 30. The slit 36 is formed in a shape penetrating the inner peripheral edge 34 of the outer peripheral wall 31 along the long side direction at the center of the outer periphery on the short side, and the width is set to about 10 mm. . When the lid 30 is put on the container body 10 by the slit 36, the air in the storage recess 12 can pass through the fitting projection 14 of the container body at an intermediate stage, and the attaching operation is facilitated. is there.

  On the upper surface of the lid 30, flat raised portions 37 having a substantially L shape in plan view are formed at four corners. The protruding portion 37 has a protruding height of about 4 to 5 mm. On the other hand, on the outer peripheral bottom surface of the container body 10, flat depressions 18 having a substantially L shape in plan view are formed at the four corners. The depression 18 is also set to a depth of about 4 to 5 mm and has substantially the same shape as the raised portion 37 on the upper surface of the lid 30. The raised portion 37 and the depressed portion 18 can be aligned in the vertical direction when the packaging container 1 with the lid 30 attached to the container body 10 is stacked in the vertical direction (see FIG. 2). By positioning the packaging containers 1 and 1 located in the position, there is a function of preventing each of them from moving independently.

  As described above, the container body 10 has a rectangular shape in plan view, and the opening 11 serving as the inlet of the storage recess 12 has a rectangular shape in plan view. A recess 19 for removing the lid 30 is formed in the wall 10b on the short side of the container body 10 in the vicinity of the corner of the rectangular opening 11. The recess 19 is a recess that can be put with a finger when the lid 30 is removed from the container body 10 of the packaging container 1. The finger is inserted into the recess and the lower surface of the lid 30 is lifted upward. The fitting of the main body 10 is released, and the lid 30 can be removed from the container main body 10. The recess 19 is formed so as to be shifted laterally from the center of the short side wall portion, so that the corner portion of the shifted lid body 30 is lifted, and the fitting can be released with a light force. In particular, since the flat lid body 30 has a weak corner portion, the lid body can be prevented from being damaged by lifting it with a light force.

  The container body 10 is formed with a central recess 20 for lifting the packing container 1 below the short side wall 10b. The central recess 20 is also formed to be recessed at the lower portion of the opposite wall portion 10b, and can be lifted in a balanced manner without tilting even in a heavy state in which root vegetables and stem vegetables are packed in the storage recess 12. Is.

  The operation of the packaging container 1 of the present embodiment configured as described above will be described below. When packing root vegetables such as lotus root, for example, as root vegetables using the packaging container 1 configured in this way, the opening 11 of the container body 10 of the packing container 1 is opened in an upward direction. The root vegetables are stored in one direction in the storage recess 12 via the portion 11. That is, the root vegetables are stored in the storage recess 12 with the longitudinal direction of the root vegetables aligned with the long side direction of the container body 10.

  The root vegetables are placed on a plurality of ridges 15 formed on the bottom surface of the storage recess 12, and the ridges 15 with which the outer surfaces of the root vegetables contact are indented (in this embodiment, elastically deformed), Support the load. In this way, the surface of the root vegetable is supported in a wide area with the contact portions of the plurality of ridges 15 recessed (the contact area of the surface of the root vegetable with respect to the container body 10 is increased as compared with the conventional one). For this reason, it is possible to prevent an excessive load from acting on the root vegetables on the bottom surface of the container, and the adhesion of the root vegetables to the bottom surface of the container main body 10 is enhanced, so that the surface of the root vegetables is scratched. The root vegetables can be placed on the bottom surface in a difficult state. In addition, the some protruding item | line 15 which carried out the elastic deformation restores by taking out root vegetables, and returns to the original state.

  As a result, it is possible to prevent discoloration and the like due to the surface damage of the root vegetables and increase the commercial value. In addition, during transportation, root vegetables may shake, but even if the root vegetables move to the side, a plurality of ridges 16, 17 are formed on the inner peripheral side surface of the storage recess 12, Since the impact during transportation can be reduced, the generation of scratches can be suppressed.

  Next, the operation of closing the opening 11 of the container body 10 with the lid 30 will be described below with reference to FIGS. 6 is a cross-sectional view of the main part in a state where the fitting part between the lid and the container main body is separated, and FIG. 7 is a cross-sectional view of the main part showing a fitting operation state between the lid and the container main body in FIG. is there. FIG. 8 is a cross-sectional view of a main part showing a state where the lid of FIG. 6 and the container main body are fitted, and FIG. 9 is a main part showing the positional relationship between the air vent part of the lid of FIG. 6 and the container main body. FIG. FIG. 10 is a cross-sectional view of the main part showing the operating state of the air vent part and the container body of the lid body of FIG.

  Specifically, after root vegetables are stored in the storage recess 12 of the container body 10, the opening 11 of the container body 10 is closed with the lid 30. Thereby, the opening part 11 of the accommodation recessed part 12 is obstruct | occluded, and is sealed. At this time, as shown in FIG. 6, the groove portion 33 of the lid 30 is positioned above the fitting convex portion 14 of the container body 10, and the lid 30 is moved downward so that the tip of the fitting convex portion 14 is moved. Align with the groove 33.

  Thereafter, as shown in FIG. 7, when the lid body 30 is pressed downward, the outer peripheral edge portion 32 is curved outward, the inner edge portion 34 is curved inward, the groove portion 33 is expanded, and the groove portion 33 is fitted. The convex part 14 is inserted. And when the fitting convex part 14 is completely inserted in the groove part 33, as shown in FIG. 8, the fitting convex strips 32a and 34a by the side of the cover body 30 become the fitting concave strips 14a and 14b of the container main body 10. As shown in FIG. Together, the opening 11 of the container body 10 is closed in a close contact state. Root vegetables such as lotus root are stored together with crushed ice when stored in the storage recess 12, but since the container body 10 is sealed by the lid 30, cold air does not escape and the cold state is stabilized.

  At that time, as shown in FIG. 10, until the container body 10 and the lid body 30 are completely fitted, the air in the storage recess 12 of the container body 10 escapes from the slit 36 for venting to the outside. Therefore, it is possible to easily fit the lid 30 to the container main body 10, and furthermore, it is possible to prevent the upper surface of the lid from being swollen and bent by internal air when the lid 30 is covered. As a result, the storage state is stabilized when the packaging container 1 is stored in a stacked manner.

  Furthermore, in the case of this embodiment, since the plurality of ridges 35 are further formed on the back surface of the lid 30, when root vegetables are transported in the packaging container 1, for example, the packaging container during movement Even if the root vegetables come into contact with the back surface of the lid body 30 due to the impact on the top, the plurality of ridges 35 formed on the back surface of the lid body 30 are deformed according to the shape of the root vegetables and absorb the impact. Therefore, it is possible to prevent the root vegetable surface from being damaged. Instead of root vegetables such as lotus root, a plurality of ridges 15 formed on the bottom surface of the container body 10 and a plurality of ridges formed on the inner side surface even when stem vegetables including leeks such as long green onions are stored. 16 and 17 can achieve the above-described effects.

  In addition, when the packaging containers 1 and 1 are stacked and stored one above the other, the packaging container 1 can be easily lifted by placing a finger on the central recess 20 formed near the bottom surface of the container body 10. Further, when the lid 30 is removed from the container body 10 to which the lid 30 is attached at the time of unpacking, a finger is inserted into the concave portion 19 formed by shifting from the center of the lid body contact surface on the top of the container body 10. By raising the lid 30 upward, the corner of the lid 30 can be easily pulled up, the lid 30 can be easily detached, and the object to be stored can be easily taken out.

  That is, conventionally, for example, in summer distribution such as lotus roots, it is necessary to open and close the lid for addition and replacement of crushed ice for quality maintenance, but in this case, in the above-described fitting structure, If the lid 30 is tightly opened and closed, the lid is likely to crack, and if breakage such as cracking occurs, it takes time to replace the contents, which makes it impossible to continue using the packaging container. .

  Here, when the concave portion 19 is formed at the center of the short side wall portion 10b, the fitting ridge 14a that fits with the full width on the short side side in order to lift the center on the short side of the lid 30, A large force is required to remove 14b and the fitting recesses 32a and 34a, and the lid 30 may break at the center, but in this embodiment, the recess 19 is formed offset from the center. Therefore, the lid 30 on the shifted side can be lifted in an oblique state, the lifting force can be small, the crack 30 can be prevented and the lid 30 can be easily removed.

  FIG. 11 is an operation explanatory view when root vegetables are stored in the packaging container of the present embodiment, (a) is a cross-sectional view of a plurality of ridges formed on the bottom surface, and (b) is a deformed cross section when in contact. Fig. (C) is a modified sectional view when root vegetables contact a plurality of ridges formed on the bottom surface, (d) is a modified sectional view of a plurality of ridges formed on the side surface, and lotus root is used as root vegetables. It is a figure for demonstrating the operation | movement which packs.

  After the lotus root 2 is stored in the storage recess 12 from the opening 11 of the container body 10 of the packing container 1, when the crushed ice (not shown) is further stored, it is formed on the bottom surface of the container body by the own weight of the lotus root 2 and the crushed ice. The plurality of ridges 15 are elastically deformed to form ridges 15a crushed downward (see FIG. 11b). As a result, the lotus root 2 comes into contact with the bottom surface of the storage recess 12 with a wide contact area. The foamed resin of the container body 10 has a higher foaming ratio than the conventional one, and is a more easily deformable material, so that it can bear a large area of its own weight. It does not act on the surface of 2 and can improve these adhesiveness. For this reason, the surface damage to the lotus root 2 can be prevented.

  When this state is seen in a cross-sectional view in the long side direction (see FIG. 11c), the plurality of ridges 15 formed along the long side direction are dented by the own weight of the lotus root 2, and the ridges 15a are crushed. Thus, the lotus root 2 can be supported over a wide area. As can be seen from this cross-sectional view, the lotus root 2 is supported not only by the portions of the plurality of ridges 15 but also by the concave portions depending on the shape, uneven state, bending state, etc. It is possible to disperse the load applied to the surface by bringing it into surface contact.

  Further, when the root vegetables such as the lotus root 2 stored and packed in the storage recess 12 of the packaging container 1 are transported, even if the root vegetables move in the horizontal direction due to vibration during movement, the wall portion in the long side direction is used. A plurality of ridges 16 formed along the bottom surface from the opening 11 on the inner side surface of 10a, a plurality of ridges 17 formed on the inner surface of the wall 10b in the short side direction, and a plurality of back surfaces of the lid body described above Since the ridges 35 buffer the shock caused by the movement of the root vegetables, it is possible to prevent the surface of the stem vegetables from being damaged.

  For example, when the side surface of the lotus root 2 comes into contact with the plurality of ridges 16 formed on the inner surface of the storage recess 12, the contacted ridges 16 are elastically deformed and pushed into crushed ridges 16a (FIG. 11d). As a result, energy can be absorbed, and the contact area can be expanded to prevent a large spot-like load from acting. As a result, the surface of the lotus root 2 can be prevented from being damaged, and problems such as discoloration can be eliminated.

  In FIG. 11, as an example of storing and packing lotus root as an irregular shape agricultural product, a set in which a plurality of ridges are arranged on the side surface in the long side direction of the storage recess according to the constriction in the longitudinal direction of the lotus root is shown. Although an example in which a plurality of sets are formed at intervals is shown, it is preferable to continuously form a plurality of ridges when storing root vegetables that are not constricted in the longitudinal direction. In addition to root vegetables such as lotus root, it is needless to say that the present invention can also be applied to storing stem vegetables such as long onions.

  Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention described in the claims. Design changes can be made.

  Since the shape and weight are generally determined by the type of root vegetables to be stored, the plurality of ridges formed on the inner surface of the storage recess of the container body and the back surface of the lid body are different from the shape of the stored root vegetables and It can be changed by its own weight.

  As an example of the packaging container, the outer shape is rectangular in plan view and the storage recess has a rectangular shape in the plan view. However, the present invention is not limited to this. The shape may be circular or elliptical. For example, the present invention is naturally applicable to the case where other root vegetables are packed in a circular storage recess.

  In the present embodiment, the plurality of ridges formed on the bottom surface and the inner side surface of the container body, and the plurality of ridges formed on the back surface of the lid are configured to be elastically deformable. Although the container main body and the lid can be reused, these plurality of protrusions do not necessarily need to be elastically deformed as long as the above-described effects can be expected.

  Furthermore, in this embodiment, the plurality of ridges 15 formed on the bottom surface of the container body 10 and the plurality of ridges 35 formed on the back surface of the lid 30 are formed along the long side direction (longitudinal direction). Although the strength of the container body 10 and the lid 30 is improved, the direction of the ridges may be the short side direction instead of the long side direction when the housed item is lightweight or the strength is not required. The diagonal direction can be selected as appropriate.

  DESCRIPTION OF SYMBOLS 1 ... Packing container, 2 ... Lotus root (root vegetables), 10 ... Container main body, 11 ... Opening part, 12 ... Storage recessed part, 13 ... Step part, 14 ... Fitting convex part, 14a, 14b ... Fitting groove, 15 16, 17 ... Plural ridges, 18 ... Depressed part, 20 ... Central concave part, 30 ... Lid, 31 ... Wall part, 32 ... Outer peripheral edge part, 33 ... Groove part, 34 ... Inner peripheral edge part, 32a, 34a ... Fitting ridges, 35 ... Plural ridges, 36 ... Air vent slits, 37 ... Raised portions

Claims (4)

A container body accommodating recess for accommodating the root vegetables or Kukina acids are formed, Ri Do from the deposited closable lid body to the opening of the housing recess, a packaging container formed of a foamed resin,
The packing container is formed in a rectangular shape in plan view having a long side direction and a short side direction, and a plurality of ridges are formed along the long side direction on the bottom surface of the storage recess of the container body,
The ridges are deformable according to the shape of the root vegetables or stem vegetables in a state in which the root vegetables or stem vegetables are stored .
The plurality of ridges are formed so that the cross-section is a continuous wave of a concave arc and a convex arc,
The packaging container , wherein a radius of curvature of an arc of a cross section of the ridge is 5 to 10 mm, a pitch of the ridge is 15 to 20 mm, and a height of the ridge is 2 to 5 mm . The packaging container according to claim 1 , wherein the plurality of ridges are further formed on the back surface of the lid that covers the opening of the storage recess. The opening of the storage recess has a rectangular shape in plan view, and a recess for removing the lid is formed on the side surface of the container body in the vicinity of the corner of the opening. The packaging container according to claim 1 or 2 . Wherein the plurality of ridges is, packaging container according to any one of claims 1 to 3, characterized in that the are from the opening to the inner surface of the housing recess is further formed toward the bottom surface.

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