JP2010143617A - Cold-keeping carrying container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cold-keeping carrying container for temporarily storing or carrying an item to be carried and showing excellent cold keeping. <P>SOLUTION: The cold-keeping carrying containers 1 to 6 and 25 to 29 include foldable boxes 1 to 6 each with a cover composed of a heat-insulating material, and inner bags 25 to 29 accommodated in the box. The inner bags 25 to 29 each include a bottom part 25, four side parts 26 to 29, and a cover 30 to 41. The item to be carried can be wrapped in a rectangular parallelepiped shape by the inner bags in such a manner that the six surfaces of the item to be carried are covered. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a cold-insulating transport container.

  When storing and transporting a low-temperature article such as dry ice, a rectangular parallelepiped having a heat insulating means to prevent it from being heated and changed by outside air (for example, in the case of dry ice, a part thereof is sublimated). A box-shaped transport container is used.

  For example, Patent Documents 1 and 2 use a foldable container in order to reduce the bulk when recovering the dry ice storage container after transport when storing the dry ice in the container for primary storage and transport. It is disclosed.

  In addition, in order to make the dry ice storage container foldable, in addition to forming the lid plate that forms the upper surface of the container so that it can be opened and closed or removable, a side plate that forms the side surface of the container and a bottom plate that forms the bottom surface It has been proposed that a part of the joined sides can be removed at the same time, and the other sides can be joined to the side of the adjacent side plate so as to be developed in a planar shape.

  On the other hand, as a heat insulating material constituting the container to be accommodated, generally, a foamed polyethylene, polypropylene, polystyrene or polyurethane foam board having closed cells is used as a core material, and a sheet material obtained by resin processing a fiber base material is used as a surface material. This is used as the exterior. Further, a wall, a bottom, and a lid formed by inserting a core material made of the foamed body into a bag shape and surrounding the core material made of the foamed material directly or via an adhesive or the like, A side plate, a bottom plate, and a lid plate are also used. Each of these plates has a rectangular parallelepiped shape that can be folded by connecting the end portion of the outer layer sheet as a hinge at each side and forming the rectangular parallelepiped container into an unfolded shape.

  Patent Documents 3 and 4 disclose the use of belts and hook-and-loop fasteners as means for allowing each unconnected side to be contacted and separated after being assembled into a rectangular parallelepiped shape. Patent Document 5 discloses that it is preferable to use a slide fastener together.

  Patent Document 6 proposes that a bag body whose inside is an accommodating portion and whose upper surface is opened is used in combination so as to suppress outside air entry from the outside of the container and to have high heat insulation performance.

  In Patent Document 7, as a high-performance heat insulating material that does not use a closed-cell foam, as a heat insulating material, a core material made of an aggregate of glass fibers, and an outer packaging material having a gas barrier property that covers the core material; A vacuum insulation material has been proposed in which the inside of the outer packaging material is sealed by reducing the pressure, and if the insulation performance is the same, it is expected to work effectively in reducing the thickness. .

Patent Documents 8 and 9 propose a foam containing such a vacuum heat insulating material, and it is proposed to improve the heat insulating performance by using the foam heat insulating material and the vacuum heat insulating material in combination.
Japanese Patent Laid-Open No. 10-230993 JP 2000-043958 A JP-A-10-338278 JP 2000-043958 A JP 2005-289475 A Japanese Patent Laid-Open No. 10-230993 Japanese Patent Laid-Open No. 2005-220954 Japanese Patent Laid-Open No. 10-211985 JP 2008-008431 A

  In conventional dry ice transportable containers that can be folded, in order to improve heat insulation, selection of the resin for the heat insulating foam board that forms the transport container, selection of foaming gas, expansion ratio, foaming While there are known matters for appropriately selecting the size of the cell, the thickness of the insulation layer, etc., emphasis is placed on improving the structure to suppress the inflow of outside air and heat from the hinge part required for folding and assembly. It has been. However, there has been a problem that the sublimation loss of dry ice cannot be sufficiently suppressed even if the various constituent requirements and the hinge structure of the heat insulating material are optimized by the methods of Patent Documents 1 to 9.

  It is an object of the present invention to provide a storage container that primarily stores or transports dry ice, and that has a cold insulation property that further suppresses sublimation loss of dry ice more than conventional storage containers. .

  As a result of earnest research on this problem, the present inventor has used an inner bag having a specific shape that is accommodated in a box with a foldable lid that is formed of a heat insulating material. It was found that by wrapping the entire six sides of the ice in a rectangular parallelepiped shape, it was possible to reduce the sublimation loss of dry ice during transportation in the box.

That is, the gist of the present invention is as follows.
(1) A cold transport container comprising a foldable box with a lid formed of a heat insulating material and an inner bag accommodated inside the box, the inner bag having a bottom and four A cold transport container characterized by comprising a side part and a lid part and capable of wrapping the object to be transported in a rectangular parallelepiped shape and covering the entire six surfaces of the object to be transported;
(2) The inner bag has a side part that can be laid down and a folding part that connects edges of the side part that can be laid down and the other side part adjacent to the side part that can be laid down. The folding part is folded and arranged along the side part in a posture in which the side part that can be laid down is raised, and is spread in a standing position in a position in which the side part that can be laid down is lying sideways. (1) the cold transport container as described in
(3) The inner bag is a cold transport container as described in (1) or (2), wherein two adjacent side portions are continuous directly or via a folded portion,
(4) The inner bag includes a first lid portion provided through the upper side of the side portion, and a second lid portion provided on one side or both sides of the side side of the first lid portion, The first lid and the second lid can be extended outward along the upper side of the side and the first lid and the second lid extended outward along the upper side of the side. Both of the parts can take a posture parallel to the bottom part (1) to (3), or the cold insulated transport container according to any one of
(5) Any one of (1) to (4), wherein the first lid portion is continuous with the other first lid portion through at least one of the second lid portion and the folding portion. Cold storage container as described in
(6) The box body can selectively lie down on one side plate or two adjacent side plates, and the inner bag can be on one side portion or two adjacent side plates corresponding to the side plate of the box body that can be laid down. According to any one of (1) to (5), it is possible to make an opening at a position where the two side portions are laid down from a standing state, and the side portions are laid down. Refrigerated transport container,
(7) The cold insulation transport container according to any one of (1) to (6), wherein the bottom of the inner bag is fixed to the bottom plate of the box,
(8) The cold insulating transport container according to any one of (1) to (7), wherein the heat insulating material includes a vacuum heat insulating material.

  The cold storage container of the present invention can cover all six sides with inner bags when the object to be transported is, for example, dry ice. In addition to being able to suppress the loss due to sublimation of dry ice at the time, it is possible to prevent the unnecessary generation of carbon dioxide accompanied by cold air generated by sublimation into the atmosphere, so that it is excellent in cold insulation.

  Hereinafter, the present invention will be described in detail.

  The cold insulated transport container of the present invention includes a foldable box with a lid formed of a heat insulating material, and an inner bag accommodated inside the box, and the inner bag has a bottom portion and four side portions. And the lid portion, and it is necessary to be able to wrap the object to be transported in a rectangular parallelepiped shape and to cover the entire six surfaces of the object to be transported.

  The cold insulated transport container of the present invention shown in FIG. 1 has a rectangular parallelepiped shape that can cover the entire six surfaces (hereinafter also referred to as the entire six surfaces) of the object to be transported inside a box with a lid having heat insulation properties. It contains the inner bag.

  Here, covering the entire six surfaces of the object to be transported means covering all the outer six surfaces of the rectangular parallelepiped material. Moreover, as for an inner bag, it is preferable that two adjacent side parts are continuing directly or via the folding part. With such a configuration, since there is no gap between two adjacent side portions of the inner bag, it is difficult for the cold air generated from the object to be transported to move out of the inner bag. An inner bag is obtained. In addition, in the case where the object to be transported is composed of a plurality and arranged or stacked in a rectangular parallelepiped shape, all the outer six surfaces may be covered in a rectangular parallelepiped shape or stacked shape. .

  As shown in FIG. 9, the box has a rectangular parallelepiped shape including the bottom plate 1, the four side plates 2 to 5, and the lid 6. After being used as a transport container, the box has a specification that can be folded and stored as shown in FIGS.

  The box structure is shown in FIGS. FIG. 2 is a developed view showing the inside of the box by spreading the four side plates of the box outward from the state of FIG. 9 and lying down, and FIG. 4 is a developed view showing the outside of the box. FIG.

  As shown in FIGS. 2, 4, and 7, the bottom plate 1 and the four side plates 2 to 5 are connected via sheet-like connecting portions 7 and 8. As shown in FIGS. 2 and 4, the bottom plate 1 and the side plate 2 and the bottom plate 1 and the side plate 3 are connected by a connecting portion 7 on the bottom surface side of the bottom plate 1, and the bottom plate 1 and the side plate 4 and the bottom plate 1 and the side plate 5 are They are connected by a connecting portion 8 on the upper surface side of the bottom plate 1. The connecting portions 7 and 8 are designed to function as hinges when the box is assembled and folded.

  The side part of the box is composed of four side plates 2 to 5. As shown in FIG. 4, the side plates 2 and 3 are provided with a sheet-like overhanging portion 9 at a portion that comes into contact with the side plates 4 and 5 when assembled as a box, and the sheet-like overhanging portion 9. Are provided with a hook-and-loop fastener 10 and a stopper 11. On the surface constituting the outside of the box in the side plates 2, 3, when assembled as a box, in the vicinity of the position to be the upper side of the side plates 2, 3, the hook-and-loop fastener fixing portion 16 in a direction parallel to the upper side. And a plurality of belts 13 in a direction perpendicular to the upper side.

  As shown in FIG. 4, the side plates 4 and 5, which form the outside of the box, are parallel to the upper side in the vicinity of the upper side of the side plates 4 and 5 when assembled as a box. A hook-and-loop fastener fixing portion 17 is provided in the direction, a belt 22 is provided below the hook-and-loop fastener fixing portion 17, and a hook-and-loop fastener fixing portion 21 and a plurality of belts 14 are provided in a direction perpendicular to the upper side.

  FIG. 3 shows the lid 6 that puts the side plates 2 to 5 laid sideways into a standing posture and covers the upper surface of the box body to which the side plates are fixed. As shown in FIG. 3, sheet-like overhanging portions 12 and 18 are provided on the four sides of the lid 6, and hook-and-loop fasteners 19 and 20 and a stopper 15 are respectively provided on the sheet-like overhanging portions 12 and 18. Is provided.

  FIG. 8 shows a state in which the four side plates 2 to 5 in the unfolded state as shown in FIGS. 2 and 4 are raised through the connecting portions 7 and 8, and the hook-and-loop fasteners 10 of the side plates 2 and 3 shown in FIG. By fixing the hook-and-loop fastener fixing portion 21 of the side plates 4 and 5 and fixing the stopper 11 provided on the side plates 2 and 3 and the belt 22 provided on the side plates 4 and 5, the bottom plate 1 and the side plates 2 to 2 are fixed. 5 shows the assembled state. Then, as shown in FIG. 8, after covering the lid 6 from the upper surface, the surface fastener 19 provided on the lid 6 and the surface fastener fixing portion 16 of the side plates 2 and 3, and the surface fastener 20 and the side plate of the lid 6 are provided. The box shown in FIG. 9 is assembled by fixing using the hook and loop fastener fixing portion 17 of 4, 5 and the stopper 15 of the lid 6, the belt 13 of the side plates 2 and 3, and the belt 14 of the side plates 4 and 5. .

  In the assembled state, the gap between the bottom plate 1 and the side plates 2 and 3 is blocked by the connecting portion 7, and the gap between the bottom plate 1 and the side plates 4 and 5 is blocked by the connecting portion 8, respectively. And the side plates 4 and 5 are closed by a sheet-like protruding portion 9. Further, the lid 6 and the box are closed by sheet-like projecting portions 12 and 18. Thereby, the box is assembled in a state where the inflow of gas inside and outside the box is prevented to some extent.

  5 and 6 show a state in which the box assembled as described above is disassembled and folded after use. As shown in FIG. 5, when the box is folded, the side plates 4 and 5 joined to the upper surface side of the bottom plate 1 via the connecting portion 8 are folded and overlapped on the upper surface of the bottom plate 1, and the lower surface side of the bottom plate 1. Then, the side plates 2 and 3 joined through the connecting portion 7 are folded and overlapped on the lower surface of the bottom plate 1. After that, by covering the lid 6 from above, the box body can be folded and accommodated so as not to be bulky as shown in FIG.

  The bottom plate 1, the four side plates 2 to 5, and the lid 6 constituting the box are configured by a heat insulating material in which the periphery of a core material made of foam board is covered with an exterior sheet. 7 shows the bottom plate 1 and the side plate 2 connected by the connecting portion 7. As shown in FIG. 7, the foam board 23 serving as a core material of the bottom plate 1 and the bottom plate 2 is covered with an exterior sheet 24. As shown in FIG. It has been broken. The exterior sheet 24 is thermally bonded around the foam board 23.

  As the foam board 23 used for the core material, a polystyrene foam which is a polystyrene foam by the bead method is well known, but in addition to those made of polypropylene, polyethylene, a copolymer of ethylene and styrene, and isocyanate. There are two-component polyurethanes that cure while foaming by reaction with polyols. The composition of the core material made of foam board, the expansion ratio, and the thickness should be designed according to the thermal insulation performance required for the box and the independence sufficient to maintain the properties as the plate forming the box, but as a guideline When forming a rectangular box of about 1 m square using polystyrene foam, the foaming ratio is preferably in the range of 15 to 45 times and the thickness is preferably about 50 mm to 100 mm. If the expansion ratio is too low, the heat insulation efficiency is lowered, whereas if it is too high, it is brittle and fragile. If the thickness is too thin, the foam board is easily broken and is inferior in durability as a box, making it difficult to use as a core of the box. On the other hand, if the thickness is too large, the volume of the outer shape becomes larger than the internal capacity, so that the transport efficiency when transporting the cold insulated transport container by a vehicle and the storage efficiency in the warehouse are remarkably deteriorated.

  The exterior sheet 24 that covers the foam board 23 is a sheet having flexibility and airtightness, and requires water resistance since there is a possibility of condensation in handling a low-temperature article. The exterior sheet 24 is required to have appropriate tensile strength and tear strength for the purpose of preventing the foam board 23 from being damaged or damaged. The connecting portion 7 is formed integrally with the exterior sheet 24 using the same material as the exterior sheet 24. As the exterior sheet 24, a plastic sheet, a plastic sheet containing paper, or a plastic sheet containing fiber or fabric is preferably used. Any plastic sheet that contains fibers is suitable for the exterior sheet, and the material of the fibers may be appropriately set depending on the size and weight of the box. For example, a plastic sheet containing a plain weave fabric is more preferable in terms of strength. Here, the plastic sheet encapsulating fibers refers to a plastic sheet obtained by impregnating, applying, or laminating the plastic to a fiber base material, or combining a plurality of these. The type of plastic is not particularly limited. In addition to being used as a box exterior sheet, the connecting portion 7 needs to be flexible because it acts as a hinge for folding and assembling. For example, thermoplastics such as a vinyl chloride sheet, an ethylene-vinyl acetate sheet, a thermoplastic polyurethane sheet, a thermoplastic polyester elastomer sheet, a polyethylene sheet, a polyolefin sheet including a polypropylene sheet, a polyamide sheet, and an acrylic copolymer sheet. A thermosetting resin sheet such as a resin sheet, a silicone rubber sheet or a soft epoxy resin sheet, a vulcanized rubber sheet, or the like can be suitably used.

  As a method for joining the two exterior sheets 24 covering the foam board 23 shown in FIG. 7, a known method such as adhesion with an adhesive, sewing machine sewing, heat welding, high-frequency welder welding can be used. In order to achieve airtightness and watertightness, it is preferable to join by high-frequency welder welding. As a sheet capable of high-frequency welder welding, a soft vinyl chloride sheet, an ethylene-vinyl acetate sheet, a thermoplastic polyurethane sheet, a thermoplastic polyester elastomer sheet, or the like can be suitably used. Moreover, as a sheet | seat which can be heat-seal-bonded, thermoplastic sheets, such as a polyolefin sheet | seat including a polyethylene sheet and a polypropylene sheet, a polyamide sheet | seat, an acrylic copolymer sheet, can be used suitably. A thermosetting resin sheet such as a silicone sheet or an epoxy resin sheet and a vulcanized rubber sheet can be used by appropriately selecting adhesion by an adhesive or sewing machine sewing. Of these, a flexible vinyl chloride sheet that is made flexible by adding a liquid plasticizer may not be suitable for transporting dry ice at cryogenic temperatures. This is because, depending on the type of plasticizer, the liquid plasticizer solidifies, so that the texture at low temperature hardens more than at normal temperature. When the curing is remarkable, the resin layer is cracked by bending.

  The inner bag used in the cold insulated transport container of the present invention has specifications that can wrap the entire six faces of the contained rectangular parallelepiped transport object, and is waterproof, airtight, normally conceivable strength, water resistance If it has the property and durability, the same raw material as what can be used for the exterior sheet | seat which has covered the baseplate of the box, the side plate, and the lid | cover can be used.

  The inner bag used for the cold insulated transport container of the present invention has a lid. The lid portion is formed of four first lid portions connected to the upper sides of the four side portions and second lid portions provided on one side or both sides of the side sides of the first lid portion. By folding the four first lid portions inward along the upper side of the side portion, the entire upper surface of the article to be transported is covered with the first lid portion. At this time, since the 1st cover part is connected with the upper side of the side part, it can cover the part of the ridgeline of the upper part of a rectangular parallelepiped thing. Furthermore, since the second lid portion is provided, when the lid portion is closed, the upper four corners of the rectangular parallelepiped object can be covered with the second lid portion. In this way, it becomes possible to cover the upper surface, the ridge line portion, and the upper four corners of the rectangular parallelepiped object in a highly airtight state. Thereby, the movement of the inside air to the outside air in the inner bag is suppressed, and the movement of the outside air into the inner bag is also suppressed. Therefore, it is possible to obtain an inner bag having excellent cold insulation properties.

  Further, from the viewpoint of covering the object to be transported in a more airtight state, the inner bag is continuous with the other first lid portion through at least one of the second lid portion and the folding portion. It is preferable. Specifically, the first lid portion may be continuous with the other first lid portion via the second lid portion, or when the adjacent side portions of the inner bag have a shape that can be laid sideways, the first lid portion lies sideways. The first lid part may be continuous with the other first lid part via a folding part that connects the edges of the possible side part and the other side part adjacent to the side part that can be laid down, or The first lid part may be continuous with the other first lid part through both the second lid part and the folding part.

  The figure which looked at the inner bag from the diagonal is shown in FIGS. As shown in FIG. 12, the inner bag has a rectangular parallelepiped shape including six sides of a bottom portion 25, four side portions 26 to 29, and a lid (formed from lid portions 30 to 41). As shown in FIG. 11, the lid is formed of a planar body in which lid portions 30 to 41 surrounding the opening formed by the upper end portions of the side portions 26 to 29 are continuously joined.

  A developed view of the inner bag of FIG. 11 is shown in FIG. As shown in FIG. 10, the side portions 26 to 29 are provided in a state of being connected to the sides 58 to 61 of the bottom portion 25 formed in a short shape, and the side 62 which is the upper side when the side portions 26 to 29 are raised. Short-shaped lid portions 30 to 33 are provided through ˜65. On both sides of the lid portions 30, 31, 32, 33, right-triangular lid portions 34, 35, 36, 37, 38, 39, and 40, 41 are provided, respectively. Adhesive portions 42, 49, 43, 44, and 45, 46, and 47, 48 are provided on both sides of the side portions 26-29, respectively, and the oblique sides of the right-angled triangular lid portions 34-41 are bonded to each other. Parts 50 to 57 are provided.

  In order to obtain the inner bag, the four side portions 26 to 29 in FIG. 10 are valley-folded from the illustrated state along the sides 58 to 61 of the bottom portion 25, and at that time, the side portions of the four side portions 26 to 29 are formed. The provided bonding portions 42 and 43, 44 and 45, 46 and 47, and 48 and 49 are bonded together. By doing so, as shown in FIG. 11, the oblique sides of the right-angled triangular lid portions 34 to 41 can be brought into contact with each other, so that the adhesive portions 50 and 51, 52 and 53, 54 provided on these oblique sides. And 55, 56 and 57 are bonded to each other to obtain a lid in which lid portions 30 to 41 arranged so as to surround the opening portion are continuously joined as shown in FIG.

  When closing the lid, the lid portions 30, 34 to 36, 41 made of the continuous surface are folded inward along the upper side 62 of the side portion 26, and the lid portions 32, 37 to 40 made of the continuous surface are made to be the upper side of the side portion 28. Fold inward along 64. Thereafter, the lid portion 31 and the lid portions 35 to 38 that overlap the lid portion 31 are folded inward along the upper side 63 of the side portion 27 by being folded, and the lid portion 33 and the lid portion 33 are folded as described above. The lid portions 34 and 39 to 41 overlapping the lid portion 33 are folded inward along the upper side 65 of the side portion 29. Thereby, a rectangular parallelepiped inner bag in the closed state shown in FIG. 12 is obtained.

  The inner bag may be used integrally with the box after being housed inside the box as shown in FIG. In order to unite the box and the inner bag, the inner bag is fixed to the bottom plate 1 at the bottom 25 inside the bottom plate 1 of the box. Specifically, as shown in FIGS. 13A and 13B, the exterior sheet 24 constituting the surface of the bottom plate 1 of the box body and the bottom portion 25 of the inner bag are integrated with each other via a sheet-like protruding portion 67. To. The case where the inner surface of the bottom plate 1 is fixed to the bottom portion of the inner bag includes not only the case where the inner surface is fixed to the inner bag but also the case where the inner surface is connected by a removable means. Examples of the removable means include a method of connecting the bottom of the inner bag and the bottom plate of the box with a hook-and-loop fastener, a method of using a slide fastener, and a method of fastening with a plurality of strings and buckles. Preferably, as shown in FIG. 13A, the sheet-like protruding portion 67 is provided along two opposing sides of the four sides of the bottom plate 1 and joined. Accordingly, it is possible to reduce the impact of the transported object on the box while suppressing the displacement of the inner bag due to the impact of the transported object during transport loading. When transporting objects to be transported using a box and an inner bag, it is customary to stack up individually packed rectangular parallelepiped dry ice vertically and horizontally to form a large rectangular parallelepiped. This is not only a particularly preferable characteristic when the individually packaged dry ice is accommodated in the box or when it is stacked in the box, but is also a particularly preferable characteristic when the transportation of the box is automated.

  The joint between the bottom portion 25 of the inner bag and the bottom plate 1 of the box body is performed in a state where the side plates 2 to 5 of the box body are laid down and unfolded, and the bottom portion 25 of the inner bag is joined to the bottom plate 1 of the box body. Then, the four side plates 2 to 5 of the unfolded box body are set in a standing posture, and the box body is assembled by the above-described method.

  When the object to be transported is accommodated, the lid 6 of the box body assembled as shown in FIG. 8 is removed, and the lid portions 30 to 41 of the inner bag accommodated inside the box body are shown in FIG. Spread it out of the body. That is, the lid portions 30 to 41 are widened so as not to face the inside of the container with respect to the opening surface. In the case of the inner bag of FIGS. 11 and 12, the object to be transported is taken in and out through the upper opening, but the workability at the time of accommodation is improved by opening the upper surface by opening the lid portions 30 to 41 outward. After the transported object is accommodated, the lid is folded so as to cover the upper surface of the transported object by the method described above. Thereby, it becomes possible to cover the entire six surfaces of the object to be transported accommodated in the inner bag. After the object to be transported is covered with the inner bag, the lid 6 is attached, and the fixing with the hook-and-loop fastener and the fixing with the belt are used in combination, whereby a cold-retainable transport body containing the object to be transported is obtained.

  Thus, since the inner bag shown in FIG. 12 is provided with a lid that can cover the upper surface of the object to be transported accommodated in the inner bag without any gap, it is difficult for outside air to enter the inner bag. Moreover, since the inside air of the inner bag is difficult to go outside, it is possible to enhance the cold keeping effect of the object to be transported.

  When taking out the object to be transported, the lid 6 of the box body is removed, and the lid parts 30 to 41 of the inner bag are spread outside the box body, and the object to be transported is taken out from above the opening. When the box body is taken out after being taken out, the four side plates 2 to 5 of the box body are laid down and expanded as described above, and the inner bag is folded on the bottom plate 1 of the box body so as not to be bulky. After that, the side plates 2 to 5 that are laid down are folded through the connecting portions 7 and 8 and the lid 6 is covered from above, so that the box and the inner bag are folded and accommodated so as not to be bulky.

  FIG. 15 is an oblique view of a preferably used inner bag having a different specification from the above. The inner bag of FIG. 15 is different from the inner bag of FIG. 11 in that the opening is provided by laying down one side portion 26 sideways.

  A developed view of the inner bag of FIG. 15 is shown in FIG. As shown in FIGS. 14 and 15, it differs from the developed view of FIG. 10 in that a folding portion 69 is provided between the rising edge 97 of the side portion 27 and the rising edge 96 of the side portion 26. The folding part 69 has a shape obtained by removing one corner from the quadrilateral. The folding part 69 is continuous with right-angled triangular lid parts 72 and 73 formed continuously with the lid parts 30 and 31. The right triangle-shaped lid portions 72 and 73 are different from the right triangle-shaped lid portions 35 and 36 in FIG. 10 in that the directions are different and the adhesive portions are not provided. On the other hand, a folded portion 70 having the same configuration is also provided between the rising side 98 of the side portion 29 and the rising side 99 of the side portion 26. The folding portion 70 is continuous with right-angled triangular lids 71 and 74 formed continuously with the lids 30 and 33, compared to the right-angled triangular shaped lids 56 and 34 of FIG. The difference is that the orientation is different and the adhesive portion is not provided.

  In order to form the inner bag of FIG. 15, the three side portions 27 to 29 provided in a state connected to the sides 59 to 61 of the bottom portion 25 shown in FIG. 14 are changed from the illustrated state to the sides 59 to 61 of the bottom portion 25. The adhesive portions 44 and 45 and 46 and 47 provided on the sides of the three side portions 27 to 29 are bonded together. As a result, as shown in FIG. 15, with respect to the bottom portion 25, the three side portions 27 to 29, the folding portions 69 and 70, and the right-angled triangular lid portions 71 and 72 are raised. Also, an adhesive portion 52 provided on the oblique side of the right-angled triangular lid portion 37, an adhesive portion 53 provided on the oblique side of the right-angled triangular lid portion 38, and an adhesive portion provided on the oblique side of the right-angled triangular lid portion 39. After the bonding portion 55 provided on the oblique side of the lid portion 40 and the right-angled triangular lid portion 40 are bonded to each other, the lid portions 31, 37, 38, 73, and the lid portion from the illustrated state so as to be parallel to the bottom portion 25. 32 and the lid portions 33, 39, 40, 74 are folded in a mountain shape as shown along the upper sides of the side portions 27-29. As a result, as shown in FIG. 15, the lids 31 to 33, 37 to 40, 73, and 74 surrounding the openings formed by the upper end portions of the side plates 27 to 29 are continuously connected to the outside. The inner bag of FIG. 10 is obtained in which an opening formed by the lid and the side portion 26 in a laid-down state is provided in front.

  To close the inner bag of FIG. 15, as shown in FIG. 15, cover parts 31, 37, 38, 73 and cover parts 33, 39, 40, 74 spread outward are shown in FIG. As shown in the drawing, the posture is set up so as to be perpendicular to the bottom portion 25 along the upper sides of the side portion 27 and the folding portion 69 and the side portion 29 and the folding portion 70, respectively. Next, as shown in FIG. 17, the side portions 26 and the lid portion 30 are raised up while the folding portions 69 and 70 and the right-angled triangular lid portions 71 to 74 are folded inward. Accordingly, as shown in FIG. 18, the folded portions 69 and 70 are arranged along the inner surface of the side portion 26 in a folded state, and the right triangular triangular lid portions 72 and 73 and the right triangular triangular lid portion 71, 74 is arranged in a state where it overlaps the lid 30. At this time, the lid portion 30 and the lid portions 71 to 74 disposed so as to be folded on the lid portion 30 are in an upright posture. Next, as shown in FIG. 19, the lid portions 31, 37, and 38 and the lid portions 33, 39, and 40 are folded inward along the upper sides of the side portions 27 and 29, and finally folded with the lid portion 30. The inner bag in the closed state shown in FIG. 20 is obtained by folding the lid portions 71 to 74, the lid portion 32 and the folded lid portions 37 to 40 inward along the upper sides of the side portions 26 and 28, respectively. can get.

  The bottom part of the inner bag of FIG. 15 can be joined to the box of FIG. 9 by the same method as in the case of the inner bag of FIG.

  When storing the object to be transported, as shown in FIG. 21, the lid of the box body is removed, the side plate 2 of the box body and the side portion 26 of the inner bag are laid down, and the lid of the inner bag is removed from the state shown in the figure. The parts 31 to 33 and the right-angled triangular lid parts 37 to 40, 73, and 74 are spread out toward the outside of the box. In the inner bag of FIG. 11, the object to be transported is stored only from above, but the inner bag of FIG. 15 can be stored from the front as shown in FIG. To do. After storing the object to be transported, the lid of the inner bag is folded so as to cover the upper surface of the object to be transported by the above-described method, and after covering all six surfaces of the object to be transported, the box is processed in the same manner as described above. To fix.

  When the object to be transported is taken out, the box cover 6 is removed and the side plate 2 of the box and the side part 26 of the inner bag are laid down in the same manner as described above. 33, the right-angled triangular lids 37 to 40, 73, 74 are directed to the outside of the box, and the object to be transported is taken out from above and in front of the opening. For this reason, workability | operativity improves compared with the case where it takes out only from upper direction. After taking out, the box and the inner bag are folded and stored so as not to be bulky in the same manner as described above.

  FIG. 23 is a view of still another inner bag as viewed obliquely. Although the specification is such that one side portion 26 can be laid down in the same manner as the inner bag of FIG. 15, the shape of the opening is different from that of the inner bag of FIG. Here, folding parts 69 and 70 are provided continuously on the side of the side part 26, and a folding part 75 is provided continuously on the side part 27, the folding part 69, and the lid part 31. 29, the folding part 70, and the lid part 33 are provided with a folding part 76 continuously.

  FIG. 23 shows a state in which the side portion 26 is laid down and an opening is formed. At this time, the folding portions 69 and 70 are folded down together with the side portion 26. The folding portions 75 and 76 stand up from the side portions 27 and 29 in a state of being opened sideways.

  A developed view of the inner bag of FIG. 23 is shown in FIG. The development view of FIG. 22 is not provided with the lid portions 73 and 74 having a right triangle shape in FIG. There is a cut 100 between the fold 69 and the side 27, and there is also a cut 101 between the fold 70 and the side 29. Using these cut lines 100 and 101, folding parts 75 and 77 are provided between the folding part 69 and the side part 27, and folding parts 76 and 78 are provided between the folding part 70 and the side part 29. The folding parts 75 and 77 are formed by a single sheet, and the folding parts 76 and 78 are also formed by a single sheet. The folding parts 75 and 76 are formed in a trapezoidal shape, and the lengths of the lower bases thereof are aligned with the side lengths of the folding parts 69 and 70, respectively. The folding parts 77 and 78 are right-angled isosceles triangles, and two sides having the same length are aligned with the length of the upper bottom of the trapezoid of the folding parts 75 and 76 and the length of the side sides of the lid parts 31 and 33, respectively. It has been. Adhesive portions 79 to 84 are provided on sides corresponding to the folding portions 69 and 70 and the side portions 27 and 29 in the folding portions 75 and 76 and sides corresponding to the lid portions 31 and 33 in the folding portions 77 and 78. ing. Using these bonding portions 79 to 84, the folding portions 75, 77, 76, and 78 are bonded to the folding portion 69, the side portion 27, the lid portion 31 and the folding portion 70, the side portion 29, and the side that contacts the lid portion 33, respectively. To integrate them.

  In order to form the inner bag of FIG. 23, the three side portions 27 to 29 provided in a state connected to the sides 59 to 61 of the bottom portion 25 shown in FIG. 22 are changed from the illustrated state to the sides 59 to 61 of the bottom portion 25. The adhesive portions 44 and 45, 46 and 47 provided on the sides of the three side portions 27 to 29 are bonded together at the time, and provided on the oblique sides of the right-angled triangular lid portions 37 and 38. The bonded portions 52 and 53 and the bonded portions 54 and 55 provided on the oblique sides of the right-angled triangular lid portions 39 and 40 are bonded to each other. At this time, from the illustrated state, the lid portion 37 and the lid portions 37 and 38 having a right triangle shape, and the lid portion 32 and the lid portion 33 and the right triangle portion and the lid portions 39 and 40 are respectively arranged so as to be parallel to the bottom portion 25. A mountain fold is made as shown along the upper sides of the side portions 27-29. As a result, as shown in the figure, the three side portions 27 to 29 are in an upright posture with respect to the bottom portion 25, and are continuously joined including the lid portions 31 to 33 and the right triangle-shaped lid portions 37 to 40. An outwardly directed lid surrounding the opening formed by the upper end portions of the side portions 27 to 29 is obtained. At this time, the folding portions 77 and 78 are folded so that the upper bottom of the folding portion 75 is along the side edge 85 of the lid portion 31, and the upper bottom of the folding portion 76 is along the side edge 88 of the lid portion 33. Like that. Thereby, as shown in FIG. 23, the opening opened to the side of the inner bag can be formed in a state in which the folded portions 75 and 76 are opened to the side.

  To close the inner bag shown in FIG. 23, the side part 26, the folding parts 69 and 70, the lid part 30, and the right-angled triangular lid parts 71 and 72 are raised from the state shown in FIG. The folding parts 69 and 75 that overlap each other, the folding parts 70 and 76 that overlap each other, the lid parts 31, 37, and 38 that are continuous surfaces, and the lid parts 33, 39, and 40 that are continuous surfaces with respect to the bottom 25 Use a vertical posture. At this time, although not shown in FIG. 23, the folded portions 77 and 78 folded as described above stand up. Next, the folded portions 69 and 75 that overlap each other and the right-angled triangular lid portion 72 and the folded portion 77 are folded so as to be disposed along the side portion 27 and the lid portion 31, and similarly the folded portions 70 that overlap each other. 76 and the right-angled triangular lid portion 71 and the folding portion 78 are folded so as to be disposed along the side portion 29 and the lid portion 33. By doing so, the lid 30 is folded at the same time. Next, the lid portion 32 is raised so as to be perpendicular to the bottom portion 25 while the right-angled triangular lid portions 37 to 40 are folded inward. At this time, the right-angled triangular lid portions 37 to 40 are folded and arranged inside the lid portion 32. Finally, the lid part 71, the lid part 33 in which the folding part 78 is folded and the lid part 72, and the lid part 31 in which the folding part 77 is folded are folded inward, and the lid parts 37 to 40 are inward. Fold the lid portion 32 disposed on the front side. Thereby, the inner bag which became the closed state is obtained.

  The inner bag of FIG. 23 is attached to and integrated with the box by the same configuration as the inner bag of FIG. When the object to be transported is accommodated, similarly to the case of FIG. 15, the assembled lid 6 of the box is removed, the side plate 2 of the box and the side portion 26 of the inner bag are laid down, and the lid portion 31 of the inner bag is placed. 33, the right-angled triangular lid portions 37 to 40 are spread toward the outside of the box, and the folded portions 75 and 76 are spread toward the sides of the box. Since the folding parts 75 and 76 open to the side, the rising walls 69 to 72 heading forward are not formed at the front opening as shown in FIG. For this reason, this rising wall does not interfere with the work of taking in and out the object to be transported between the inside and outside of the inner bag. After storing the object to be transported, the lid of the inner bag is folded so as to cover the upper surface of the object to be transported by the above-described method, and after covering all six surfaces of the object to be transported, the box is processed in the same manner as described above. To fix.

  When taking out the object to be transported, the box cover 6 is removed, the box side plate 2 and the inner bag side part 26 are laid down, and the inner bag cover parts 31 to 33, right angle, in the same manner as described above. The triangular lids 37 to 40 are spread toward the outside of the box, and the folded parts 75 and 76 are spread toward the sides of the box, and the object to be transported is taken out from above and in front of the opening. The box and the inner bag can be folded and accommodated so as not to be bulky in the same manner as described above.

  FIG. 25 is a perspective view of still another inner bag. Unlike the inner bag of FIG. 15, the two side portions 26, 27 adjacent to each other are laid down so that the folding portions 91, 70 provided on the sides of the adjacent side portions 28, 29 are also raised simultaneously. Therefore, the opening is provided on the front and side of the inner bag.

  The developed view of the inner bag of FIG. 25 is shown in FIG. The development view of FIG. 24 is provided with a folding portion 91 that is sandwiched between the development view of FIG. 14 and the sides of the side portions 27, 28, with one corner portion removed from the quadrilateral, and Is different in that lid portions 92 and 93 having different right-angled triangle-shaped adhesive portions are continuously provided.

  In order to form the inner bag of FIG. 25, the two side portions 28 and 29 provided in a state connected to the sides 60 and 61 of the bottom portion 25 shown in FIG. 24 are changed from the illustrated state to the sides 60 and 61 of the bottom portion 25. The adhesive portions 46 and 47 provided on the sides of the two side portions 28 and 29 are bonded together at the time, and the adhesive portions provided on the oblique sides of the right-angled triangular lid portions 39 and 40 are bonded. Adhere 54 and 55 together. At this time, the lid portions 32, 39, 93 and the lid portions 33, 40, 74 are folded in a mountain shape as shown along the upper sides of the side portions 28, 29 from the illustrated state so as to be parallel to the bottom portion 25. To do. As a result, as shown in FIG. 25, the two side portions 28 and 29 are raised with respect to the bottom portion 25, and are continuously joined including the lid portions 32, 33, 39, 40, 74, and 93. The side portions 26 and 27 and the folded portions 69, 70, and 91 and the lid portions 30 and 31 are provided with an outwardly directed lid that surrounds the opening formed by the upper end portions of the side portions 28 and 29. And the inner bag of FIG. 25 provided with the opening part formed by the right-angled triangular lid parts 71 to 74, 92, 93 is obtained.

  To close the inner bag of FIG. 25, the lid portions 32, 39, 93 and the lid portions 33, 40, 74 made of continuous surfaces are perpendicular to the bottom portion 25 along the upper sides of the side portions 28, 29. Start up to become. At this time, the lid portions 39 and 40 overlap each other and are folded. Next, the side portion 26, the lid portion 30, the triangular lid portions 71, 72 to 74, and the folding portion 69 that are laid down are moved along the side 58 of the bottom portion 25 from the state shown in FIG. Stand in a standing position while folding. At this time, the folding part 70 is arranged by being folded inside the side part 26 or 29, and the right-angled triangular lid parts 71 and 74 are arranged along the lid part 30 in a state of overlapping each other. At the same time, the side part 27 and the lid part 31 that are laid down are brought into a standing posture while the folding parts 69 and 91 and the right triangular triangular lid parts 73 and 92 are folded inward. At this time, the folding parts 69 and 91 and the right triangular lid parts 73 and 92 are arranged in a state of being folded along the side part 27 and the lid part 31. Finally, a part of the folding parts 69 and 91, the lid part 31 on which the right-angled triangular lid parts 73 and 92 are arranged, and the lid part 33 are folded inward, and the right-angled triangular lid parts 71 and 74 are folded inside. 25 is folded inward from the state shown in FIG. 25 along the upper sides of the side portions 26 and 28. Thereby, a rectangular parallelepiped inner bag in a closed state is obtained.

  The inner bag of FIG. 25 is attached to and integrated with the box by the same configuration as the inner bag of FIG.

  When storing the object to be transported, as in the case of FIG. 15, the assembled lid 6 of the box is removed, the side plates 2 and 4 of the box and the side portions 26 and 27 of the inner bag are laid sideways, The lid portions 32, 39, 93 and the lid portions 33, 40, 74 of the bag are spread toward the outside of the box, and the side portions 26, 27 and the folded portions 69, 70, 91 and the lid portions 30, 31 that are laid down are laid down. In addition, an opening formed by right-angled triangular lids 71 to 74, 92, and 93 is provided. In the inner bag of FIG. 15, the object to be transported could only be taken in and out of the front and the top. On the other hand, since the inner bag of FIG. 25 can carry in and out the object to be carried from the side, workability is further improved. After accommodating the object to be transported, the lid portion of the inner bag is folded so as to cover the upper surface of the object to be transported by the above-described method, and after covering the entire six surfaces of the object to be transported, the cover 6 is attached, Use both fixing and fixing with a belt.

  When the object to be transported is taken out, the box cover 6 is removed, the box side plates 2 and 3 and the inner bag side parts 26 and 27 are laid sideways, and the inner bag cover part 32, 33 and right-angled triangular lids 38 to 41 are spread toward the outside of the box, and the side portions 26 and 27 and the folded portions 69, 70 and 91 and the lid portions 30 and 31 and the right-angled triangular lid portions are laid down. In a state where the openings formed by 34 to 37 are provided, the box and the inner bag are folded and accommodated so as not to be bulky in the same manner as described above.

  Moreover, since the inner bag used for the cold insulated conveyance container of this invention can cover the whole surface of a to-be-conveyed object, its airtightness is high. Therefore, when the object to be transported covered by the inner bag is, for example, dry ice, the carbon dioxide gas generated by sublimation moves to the outside of the inner bag through the gap of the lid folded from the inner bag. There is. At this time, if frost adheres to or freezes on a part of the folded lid due to the temperature difference between the carbon dioxide gas to be moved and the atmosphere, the portions where the folded lids are in contact with each other are frozen. It will be in an integrated state, and opening and closing of the inner bag will be inconvenient. Further, when the texture of the inner bag is cured by freezing, if the curing is significant, the inner bag is cracked by bending. Therefore, as shown in FIG. 26, the lid portion of the inner bag can be provided with a cylindrical gas vent passage 86 for discharging the carbon dioxide gas generated by the sublimation of the transported object to the outside. Alternatively, as shown in FIGS. 27 and 28, a cap 89 having a gas vent passage 87 may be provided in the closed inner bag. When a degassing passage is provided in the lid part of the inner bag, the portion where the carbon dioxide gas and the atmosphere come into contact becomes the degassing passage, and the portion where the folded lid parts are in contact with each other is not frozen and integrated, so that the inner bag can be opened and closed. Will not be hindered.

  On the other hand, a vacuum heat insulating sheet covered with a laminate of an aluminum foil having a gas barrier property and a plastic film can be used as a material for imparting heat insulating properties. As shown in FIG. 29, the vacuum heat insulating sheet is composed of a core material 94 made of an aggregate of glass fibers, and an exterior material 95 made of a laminate of an aluminum foil and a plastic film covering the core material. The vacuum heat insulating sheet is used in a state where the core member 94 is covered with an exterior member 95 and then the inside is decompressed and sealed.

  Since the vacuum heat insulating sheet has heat insulating properties, a vacuum heat insulating sheet having a thickness of about 5 mm to 1 cm is used as a core material between foam boards 66 and 90 having substantially the same thickness as shown in FIG. In addition, a smart-shaped foam board 68 having a thickness similar to that of the vacuum heat insulating sheet is provided. As shown in the figure, by using the vacuum heat insulating sheet and the foam board 68 sandwiched from above and below by the foam boards 66 and 90, the heat insulating property of the foam board can be improved. On the contrary, if the same heat insulating property is expressed, it is expected that the use of the vacuum heat insulating sheet inside the core material is effective as a technique for reducing the thickness of the core material. The vacuum heat insulating sheet is used after being formed into the shape of a heat insulating board as follows.

  As the vacuum heat insulating sheet to be used, U-Vacua and S-Vacua (both trade names) manufactured by Panasonic Corporation, Vipace (trade name) manufactured by Asahi Fiber Glass Co., Ltd., etc. can be used as available sheets. The vacuum heat insulating sheet is not self-supporting as a structure forming a transport container when used by itself, and has no resistance to needles, nails, blades, and the like. For this reason, in order to form a wall plate of a transport container having a rectangular parallelepiped shape, the vacuum heat insulating sheet is accommodated inside a foam board which is a foam, and is formed into a plate shape so as to be self-supporting and a needle or nail. It provides resistance to blades and the like. The foam can be composed of closed-cell foamed polyurethane, polyethylene, polypropylene or polystyrene, and mixtures or copolymers thereof.

  As a second aspect, the vacuum heat insulating sheet can be held as a core in the center of a hollow mold for forming an independent foam, and then a two-component foamable polyurethane can be injected around it to be foam-cured and molded. . As a third aspect, the foamed hollow molding die can be molded by heating and foaming by means of water vapor or the like after filling the periphery with the vacuum heat insulating sheet and filling with foaming beads.

  As a method for forming an independently foamed foam board composite using a vacuum heat insulating sheet, other known methods may be used, or a combination thereof may be formed. The independent foamed foam board composite containing the vacuum heat insulating sheet may be designed in accordance with the heat insulating performance required for the transport container, with the composition of the heat insulating material, the expansion ratio, and the thickness. When forming a rectangular parallelepiped transport container of about 1 m square, the expansion ratio is in the range of 20 to 50 times, and the thickness is preferably about 50 mm to 100 mm. If the expansion ratio is too low, the heat insulation efficiency is lowered, and if it is too high, it is brittle and fragile. If the thickness is too thin, it becomes difficult to stand on its own, and the board is easily broken and inferior in durability. If it is too thick, the volume of the outer shape becomes larger than the inner capacity, and the transportation efficiency in the vehicle and the storage efficiency in the warehouse are remarkably deteriorated.

  An independent foamed foam board composite configured to cover a vacuum heat insulating sheet is self-supporting as a heat insulating material serving as a core material for a side plate, a bottom plate, and a cover plate of a dry ice transport container, and the vacuum heat insulating sheet is It is suitable as an object that protects against damage from external force. In order to prevent the penetration of needles, nails, and the like, and to prevent breakage due to external force, it is possible to contain or laminate a steel plate, a wire mesh, a fiber layer, or the like in the foam layer during molding.

  The foam board composite can be used as a cover plate, a bottom plate, and a side plate after being covered with an exterior sheet and then molded into a heat insulating plate. As shown in FIG. 29, the foam board composite is covered with an exterior sheet 24.

  Next, examples of the present invention and comparative examples will be described. The molding methods and evaluation methods in the following examples and comparative examples are shown below.

(1) Box using only a foam board A box having an outer dimension of 127 cm in width, 96 cm in height, and 100 cm in depth was used. The heat insulating material is a foamed polypropylene foam board (thickness 80 mm, manufactured by Kaneka Corp., Eperan-PP) with a foaming ratio of 30 times. The exterior sheet surrounding the foam board is a plain-woven polyester fiber cloth with a polyethylene film on both sides. A waterproof sheet (thickness 0.5 mm, weight 360 g / m ² manufactured by Kambo Plus Co., Ltd., trade name Apple Star LL800PET) was used to join and mold with a hot plate welder. As shown in FIGS. 2, 3, and 4, the side plate and the cover plate have sheet-like overhang portions 9, 12, and the same waterproof sheet used for the exterior at each side end portion to be connected when the container is assembled. 18 was provided so that it could be fixed using the hook-and-loop fasteners 10, 19, and 20. Belts used for transportation and lifting were not placed. Dry ice can be accommodated by opening the top cover plate and the front side plate.

(2) Inner bag A waterproof sheet (thickness 0.5 mm, weight 360 g / m ² Kambo Plus Co., Ltd.) with a polyethylene film laminated on both sides using the same plain weave polyester fiber cloth as the outer sheet used for the outer packaging of the box The inner bag which becomes the aspect of FIG. 14 shown by the expanded view of FIG. 9 was shape | molded using the product name Apple Star LL800PET). The inner bag was integrally joined to the exterior sheet on the inner side of the bottom plate via a sheet-like protruding portion at a position along two opposite sides of the four sides of the bottom plate of the box on the bottom surface. In addition, the sheet portion generated by folding the inner bag was temporarily fixed to the inner surface of the box using a hook-and-loop fastener so as not to interfere with the work of storing dry ice.

(3) Foam board composite As the vacuum heat insulating sheet, a VIP ACE (trade name) thickness of 7.5 mm manufactured by Asahi Fiber Class Co., Ltd. was used. As the foam board sandwiching the vacuum heat insulating sheet, a foamed polypropylene foam board (trade name Eperan-PP manufactured by Kaneka Co., Ltd.) having a foaming ratio of 30 times the same as the heat insulating material of the box is used. A 5 mm vacuum heat insulating sheet and a 32.5 mm thick foam board were laminated in this order via temporary fixing with a double-sided adhesive tape. In the vicinity of the vacuum heat insulating sheet, a gap generated according to the thickness of the vacuum heat insulating sheet was sealed in the same manner using the foamed polypropylene foam board and thickness 7.5 mm. The outer periphery was fixed with adhesive tape for reinforcement.

(4) Molding of box using foam board composite Sheet material for exterior that surrounds the heat insulation board, except that the heat insulation board is used in place of the foamed polypropylene foam board as the core material of the side plate, the bottom plate, and the cover plate, The molding method, dimensions, and connecting means that can be contacted / separated were arranged, and all were molded in the same manner, including that a belt used for transportation and lifting was not arranged.

Example 1
36 pieces of cuboid dry ice (4 rows, 3 rows and 3 tiers), which are individually wrapped with kraft paper, are housed in an inner bag, and the front and top surfaces of the inner bag are folded and only a foam board is used. The side plate and lid plate on the front side of the box were closed, and the sheet-like sticking part was fixed with a hook-and-loop fastener. The initial weight excluding the weight of the box and the inner bag was 927 kg (including the weight of the individually wrapped kraft paper). The same weight after the lapse of 24 hours was measured, the difference from the initial weight was determined, and this was divided by the initial weight to obtain the weight loss rate (%). The results are shown in Table 1. In addition, the measurement of weight loss of dry ice in Example 1 was performed at the same place as the measurement in Comparative Examples 1 and 2 below.

Comparative Example 1
The same box as in Example 1 was used, but no inner bag was used. As in Example 1, 36 cuboid-shaped dry ice pieces (4 rows, 3 columns, 3 rows), which are individually packaged with kraft paper, are accommodated in the box, the front side plate and the lid plate are closed, and a sheet shape is obtained. The overhang part was fixed with a hook-and-loop fastener. The initial weight excluding the weight of the box and the inner bag was 935 kg. The same weight after the lapse of 24 hours was measured, the difference from the initial weight was determined, and this was divided by the initial weight to obtain the weight loss rate (%). The results are shown in Table 1.

Example 2
A box was formed in the same manner as in Example 1 except that the foam board composite was used as the heat insulating material. Further, as in Example 1, 36 pieces of cuboid dry ice (4 rows, 3 columns, 3 stages), which are individually packaged with kraft paper, are housed in the box, and the front side plate and lid plate are closed, The sheet-like overhanging part was fixed with a hook-and-loop fastener. The initial weight excluding the weight of the box and inner bag was 928 kg. The same weight after the lapse of 24 hours was measured, the difference from the initial weight was determined, and this was divided by the initial weight to obtain the weight loss rate (%). The results are shown in Table 1.

  In Example 1, since the cold-insulated transport container and the inner bag of the present invention were used for storing dry ice, the dry ice reduction rate after 24 hours was 2.6%, and the reduction rate of Comparative Example 1 in which no inner bag was used. It was suppressed by 38% compared to 4.2%. Moreover, in Example 2, since the dry ice was accommodated using the cold insulating conveyance container and inner bag which were shape | molded with the heat insulating material using the vacuum heat insulating sheet, the heat insulation effect became higher compared with Example 1. . The decrease rate of dry ice after 24 hours in Example 2 was 1.8%, which was 56% less than the decrease rate of 4.2% in Comparative Example 1.

  When individually packaged dry ice is stacked in a rectangular parallelepiped shape, the amount of dry ice is usually reduced at the top four corners and less in the middle because the contact area with the outside air increases. Table 2 compares the weight loss of each individual package with the initial 24 hours after the dry ice individual packages loaded in the uppermost four corners in Examples 1 and 2 and Comparative Example 1.

  As shown in Table 2, the dry ice reduction rate after 24 hours at the top four corners is 5.0 to 5.6% in Example 1, 3.5 to 4.3% in Example 2, and Comparative Example 1 was 7.8 to 8.6%, which was higher than the decrease rate after 24 hours of the whole dry ice shown in Table 1. However, the ratio of the reduction ratio of the four corners to the whole was about 2.0 in Examples 1 and 2 and Comparative Example 1 and was about the same. From this, the cold-insulated transport container and the inner bag of the present invention have no difference in the dry ice weight reduction effect between the whole and the upper four corners, and although the four corners have a high reduction rate, the effect of the present invention is totally It enjoyed similarly, and it has confirmed that it had the weight loss suppression effect equally over the whole 6 surface of dry ice.

  Compared to conventional cold storage containers, the cold storage transport container of the present invention can suppress the weight loss due to sublimation of dry ice during the primary storage and transport of the dry ice that is the object to be transported. Can be widely offered.

A view of the box containing the inner bag from an angle Box development (inside the box) View of the lid from an angle Box development (outside of box) A view of the folded box and lid from an angle Figure of a folded box with a lid The figure where the bottom plate of the box and the side plate are connected via the connecting part A view of the box with the side fixed A view of the box fixed with a lid on it Inner bag development A view of the inner bag with the lid spread outward A view of the closed inner bag from an angle The figure which shows the junction part of the bottom plate of a box and the bottom of an inner bag Development of another inner bag The figure which looked at the inner bag of FIG. 14 which extended the cover part outward from the diagonal The figure which looked at the mode during folding of the inner bag cover part of Drawing 14 from the slant The figure which looked at the mode during folding of the inner bag cover part of Drawing 14 from the slant The figure which looked at the mode during folding of the inner bag cover part of Drawing 14 from the slant The figure which looked at the mode during folding of the inner bag cover part of Drawing 14 from the slant The figure which looked at the inner bag of FIG. 14 of the closed state from diagonally The figure which looked at the box body in which the inner bag of FIG. 14 at the time of accommodating a to-be-conveyed object was accommodated was seen from diagonally Another development of inner bag The figure of the state which assembled the inner bag of FIG. Another development of inner bag The figure of the state which assembled the inner bag of FIG. A view of a closed inner bag with a gas vent seen from an angle The figure which looked at the inner bag which covered the cap which has a degassing part from the diagonal Cross-sectional view of an inner bag covered with a cap having a gas vent Cross section of foam board composite

Explanation of symbols

1. Bottom plate 2. 2. Side plate Side plate 4. 4. Side plate Side plate 6. Lid 7 Connecting part 8. Connecting part 9. 9. Sheet-like overhanging part Hook-and-loop fastener 11. Stopper 12. Sheet overhang 13. Belt 14. Belt 15. Stopper 16. Hook-and-loop fastener fixing part 17. Hook-and-loop fastener fixing part 18. Sheet overhanging portion 19. Hook-and-loop fastener 20. Hook and loop fastener 21. Hook-and-loop fastener fixing part 22. Belt 23. Foam board 24. Exterior sheet 25. Bottom 26. Side 27. Side 28. Side 29. Side 30. Lid 31. Lid portion 32. Lid 33. Lid 34. Right-angled triangular lid 35. Right-triangular lid 36. Right-angled triangular lid 37. Right-angled triangular lid 38. Right-angled triangular lid 39. Right-angled triangular lid 40. Right-angled triangular lid 41. Right-angled triangular lid 42. Bonding part 43. Bonding part 44. Bonding part 45. Bonding part 46. Bonding portion 47. Bonding part 48. Bonding part 49. Bonding part 50. Bonding part 51. Bonding part 52. Bonding part 53. Bonding part 54. Bonding part 55. Bonding portion 56. Bonding part 57. Bonding portion 58. Bottom side 59. Bottom side 60. Bottom edge 61. Bottom side 62. Side edge 63. Side edge 64. Side edge 65. Side edge 66. Foam board 67. Sheet overhanging portion 68. Foam board 69. Folding unit 70. Folding unit 71. Right-angled triangular lid 72. Right-sided triangular lid 73. Right-triangular lid 74. Right triangle-shaped lid 75. Folding part 76. Folding part 77. Folding part with right triangle shape 78. Folding part 79 having a right triangle shape. Bonding part 80. Bonding part 81. Bonding part 82. Bonding part 83. Bonding part 84. Bonding part 85. Lid side 86. Degassing part 87. Degassing part 88. Lid side 89. Cap with gas venting 90. Foam board 91. Folding part 92. Right-angled triangular lid 93. Right-angled triangular lid 94. Fiber core 95. Exterior material 96. Side edge 97. Side edge 98. Side edge 99. Side edge 100. Break 101. Break

Claims (8)

  A refrigerated transport container, comprising a foldable box with a lid formed of a heat insulating material, and an inner bag accommodated inside the box, the inner bag comprising a bottom and four side portions A cold transport container comprising a lid, configured to wrap a transported object in a rectangular parallelepiped shape, and configured to cover all six surfaces of the transported object.   The inner bag has a foldable side portion and a foldable portion that connects edges of the foldable side portion and other side portions adjacent to the foldable side portion, The part is folded and arranged along the side part in a posture in which the side part that can be laid down is raised, and is spread in a standing position in a position in which the side part that can be laid down is laid down. The cold-reserving transport container according to 1.   The cold storage transport container according to claim 1 or 2, wherein two adjacent side portions of the inner bag are continuous directly or via a folded portion.   The inner bag has a first lid portion provided via an upper side of the side portion, and a second lid portion provided on one side or both sides of the side side of the first lid portion, and the first lid portion And the second lid portion can be spread outward along the upper side of the side portion, and the first lid portion and the second lid portion that are spread outward along the upper side of the side portion are both The cold insulated transport container according to any one of claims 1 to 3, wherein the container can take a posture parallel to the bottom.   5. The cold insulation according to claim 1, wherein the first lid portion is continuous with the other first lid portion through at least one of the second lid portion and the folding portion. Transport container.   The box can selectively lie down one side plate or two adjacent side plates, and the inner bag can be one side corresponding to the side plate of the box that can be laid down or two adjacent side portions. However, it is possible to make an opening at the position where the container is laid down by being laid down from the standing state. 6. The cold insulated transport container according to claim 1, wherein   The bottom part of an inner bag is being fixed with the baseplate of the box, The cold storage conveyance container of any one of Claims 1-6 characterized by the above-mentioned.   The heat insulating material according to any one of claims 1 to 7, wherein the heat insulating material includes a vacuum heat insulating material.

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