JPH055149Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Field of Industrial Application] The present invention relates to an assembly packaging box used for selling ice cream, cake, etc.

[Conventional technology]

A side plate piece is attached to each side of the bottom plate, a cover plate piece is attached to one set of opposing side plate pieces among these side plate pieces, and a holding piece that can be freely joined to each other is attached to the cover plate piece through a hinge portion. An assembled packaging box that uses continuous sheet materials and is constructed so that when the sheet materials are bent at each hinge and assembled into a box shape, both arms stand up, making it convenient to carry. It is well known in the art that the sheet material is made of paperboard whose inner surface is coated with wax.

[Problem that the invention attempts to solve]

The well-known prefabricated packaging boxes mentioned above have poor insulation properties, and require the use of ice packs such as dry ice to keep the stored items at the required low temperature. There was room for improvement in terms of load capacity.

[Means to solve the problem]

The present invention was developed in view of the above points, and its purpose is to replace the sheet material that constitutes the assembly packaging box with a laminated material made by adhering a vacuum-formed foamed synthetic resin sheet to the inner surface of paperboard. This sheet material is provided with an air chamber that bulges toward the inner surface of the box, and this air chamber and the inner layer made of a foamed synthetic resin sheet provide a protective function for the packaged items, that is, a cushioning function. An object of the present invention is to provide an assembled packaging box that is improved in terms of heat insulation, load resistance, etc., and shape retention when assembled. Therefore, the above object of the present invention is to provide a side plate piece on each side of a quadrangular bottom plate, and a cover plate piece on the upper side of one set of side plate pieces facing each other among these side plate pieces, and a cover plate piece on the upper side thereof. The side plate pieces of the other set have side folding pieces connected to the left and right sides via hinges, while the opposing sides of both cover plate pieces have joint pieces in the middle. The remaining hanging pieces are connected via a hinge part, and hooking protrusions are provided on both left and right sides of the hanging pieces, and
A support piece is provided protruding from the middle part of the upper side of the side plate piece of the other set to which the side plate pieces are connected, and the above-mentioned latch protrusion piece can be freely engaged with the support piece. A sheet material is foam-synthesized on one side of the paperboard layer, in which an opening is formed and a top folding piece is connected to the upper side of the side plate adjacent to the left and right sides of the support piece through a hinge part. It is formed from a laminated material in which resin layers are laminated, and the foamed synthetic resin layer of this sheet material has bulges in the bottom plate, the lid plate piece, the side folding piece, and the side plate piece to which the side face folding piece is connected. This is accomplished by an assembled packaging box that is provided with an air chamber between the inner surface of these bulges and the paperboard layer.

【Example】

Embodiments of the present invention will be described below with reference to the accompanying drawings. The sheet material 1, which is a component of the assembled packaging box, includes a bottom plate 11 having a square shape (rectangular in the case shown), and side plate pieces 13 to 16 connected to each side of the bottom plate 11 via hinges 12. , lid plate pieces 18 and 19 which are connected to the upper sides of one set of side plate pieces 13 and 15 facing each other among these side plate pieces and can be freely butted against each other via a hinge part 17, and the other side plate pieces facing each other A side folding piece 2 is connected to the left and right sides of the set of side plate pieces 14 and 16 via a hinge part 21.
2, 23, and the above-mentioned both cover plate pieces 18, 19
A hand piece 2 in which tongue-like connecting pieces 24 and 25 are left cut in the middle part on opposite sides of the handle piece 2.
6 and 27 are connected to each other via a hinge portion 28, and 29 is a cut line thereof. Also, hand piece 2
Latching protrusions 31 and 32 are protrudingly provided on both left and right sides of 6 and 27 adjacent to the hinge portion 28. On the other hand, the side plate pieces 14 and 16 to which the side folding pieces 22 and 23 are connected are provided with support pieces 33 and 34 protruding from the middle portions of their upper sides.
34 is provided with latching openings 33a, 34a into which the aforementioned latching protrusions 31, 32 can freely engage, and the supporting pieces 33, 3 are provided on the upper sides of the side plate pieces 14, 16.
Upper folding pieces 35, 36 adjacent to both left and right sides of 4
are connected to each other via a hinge portion 37, respectively. 38 is a score line. The sheet material 1 having the above structure is formed of a laminated material in which a foamed synthetic resin layer 1b is laminated on one side of a paperboard layer 1a with an adhesive layer 1c, as shown in FIGS. 2 and 5. , a bottom plate 11 and a cover plate piece 1 are provided on the foamed synthetic resin layer 1b and the adhesive layer 1c.
8, 19, side folding pieces 22, 23 and side plate piece 14 to which the side folding pieces 22, 23 are connected;
A bulging portion 2 is provided at each portion 16 by vacuum forming, and an air chamber 3 is formed between the inner surface of the bulging portion 2 and the paperboard layer 1a. In this case, the bottom plate 11
Four bulges 2 are provided on the top, and two bulges 2 are provided on the side plate pieces 14 and 16.
may be changed as necessary. Further, some of the bulges 2 have a peripheral edge partially formed into a stepped portion 2a,
Although consideration has been given to improving the adhesion when assembled into a box shape, this may be achieved by forming the peripheral edge part into a tapered surface part 2b and abutting against each other, as shown in FIG. Note that the paperboard layer 1a may be made of art paper or cardboard made from pulp, or a composite sheet made of a foam sheet as a base material and having a paperboard layer on the surface.
A flat sheet of 0.5 to 3 mm is used as the foamed synthetic resin layer 1b, such as a foamed sheet such as polystyrene paper, crosslinked foamed polyethylene, or foamed polyethylene, or a non-foamed sheet such as a vinyl chloride sheet, an impact-resistant sheet, or a polypropylene sheet. The thickness of
A sheet-like material of 0.2 to 3 mm is used, and the adhesive for the adhesive layer 1b is ethylene/vinyl acetate copolymer, low density polyethylene, Surlyn (registered trademark).
A thermoplastic resin having a melting point of 70 to 123°C, such as
Ethylene polymer films, acrylic resins, vinyl acetate resin emulsions, etc. each having a thickness of 3 to 100 microns are used. According to the above configuration, the sheet material 1 is attached to each hinge portion 12, 17, with the foamed synthetic resin layer 1b side as the inner surface.
When the parts 21, 28, and 37 are folded and assembled into a box shape as shown in FIG. 4 from the state shown in FIG. , the top folding pieces 35 and 36 are inscribed and overlapped with the cover plate pieces 18 and 19, respectively, and one joint piece 24 is on the top surface of the cover plate piece 19, and the other joint piece 25 is on the bottom surface of the cover plate piece 18. While each of them overlaps, the two handle pieces 26 and 27 are butted against each other, and the latching protrusions 31 and 32 engage with the latching openings 33a and 34a. A packaging box with excellent heat insulation properties can be formed.

[Effect of the idea]

The present invention is as described above, and not only can it be easily assembled by each hinge part, but also by the foamed synthetic resin layer of the sheet material and the air chamber that bulges out over the entire inner wall of the box during assembly. It can effectively protect stored items from impact, has excellent heat insulation properties, and has a cooling function. In addition, the handle can be easily formed during assembly, making it convenient to carry.The box as a whole is strong, and the side folding piece inscribed in one set of side plate pieces and the top folding piece inscribed in the lid plate piece are included. Its practical value is extremely great, such as its excellent shape retention.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a developed view, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, Fig. 3 is a perspective view showing an intermediate stage during assembly operation, and Fig. 4 The figure is a perspective view when the assembly is completed, and FIGS. 5 and 6 are sectional views of the main parts when assembled. In the figure, 1 is a sheet material, 1a is a paperboard layer, 1b is a foamed synthetic resin layer, 2 is a bulge, 3 is an air chamber, 11 is a bottom plate, 12 is a hinge part, 13, 14, 15, 16
is a side plate piece, 17 is a hinge part, 18, 19 are lid plate pieces, 21 is a hinge part, 22, 23 are side folding pieces, 24, 25 are joint pieces, 26, 27 are hand pieces,
28 is a hinge part, 29 is a cut line, 31, 32 are latching protrusions, 33, 34 are support pieces, 33a, 34a
35 and 36 are upper folding pieces, and 37 is a hinge portion.

Claims (1)

[Scope of utility model registration request] There are side plate pieces on each side of the square bottom plate, one set of side plate pieces facing each other has a cover plate piece on its upper side, and the other set of side plate pieces facing each other has a cover plate piece. On both the left and right sides, side folding pieces are connected via hinge parts, while on the opposing sides of both cover plate pieces, there are hand pieces with a joint piece left in the middle part at the hinge part. At the same time, hooking protrusions are provided on the left and right sides of the hand piece, and the side plate pieces of the other set to which the side folding pieces are connected are provided with hanging protrusions on both left and right sides of the hand piece. A support piece is provided protrudingly in the middle part of the upper side, and this support piece is provided with a latching opening into which the above-mentioned latching protrusion can freely engage. A sheet material is formed of a laminated material in which a foamed synthetic resin layer is laminated on one side of a paperboard layer, and a sheet material in which a top folding piece is connected to the upper side of each side plate through a hinge part, and the foamed synthetic resin layer of this sheet material is The synthetic resin layer has bulges in the bottom plate, the lid piece, the side folding pieces, and the side plate pieces to which the side folding pieces are connected, and there is a bulge between the inner surface of these bulges and the paperboard layer. An assembly packaging box characterized by forming an air chamber.