JP3516559B2 - Wrapping paper box - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrapping paper box for packing a heavy article for transportation or the like.

[0002]

2. Description of the Related Art As a wrapping paper box for packaging heavy items for transportation, thick and tough paper such as corrugated cardboard is used, and a space between a predetermined portion of an article to be packaged and an inner wall of the packaging box. In order to fill the gaps, the pats molded into a predetermined shape with Styrofoam or the like are used. This putt
The object to be packaged is fixed in the packaging paper box, and the weight of the object to be packaged is prevented from being concentrated on the bottom surface of the packaging paper box and the like.

The pad protects the object to be packaged from an external force during transportation, and guarantees damage prevention of the object to be packaged in a drop test. This pad is made of paper if the packaged item weighs less than a few kilograms.
When the weight is more than g, a resin such as expanded polystyrene having excellent strength and moldability is often used. The resin pad has a problem that pollution is likely to occur when it is disposed of. Therefore, even in the packaging of heavy goods, it is desired to use a packaging paper box that can be easily recycled when the entire packaging is discarded.

[0004]

However, the paper pad has a problem in strength because it has a directionality in strength, is easily deformed with time, and has poor restorability when deformed. Therefore, conventionally, it has been difficult to wrap heavy objects having large irregularities in a wrapping paper box using only a paper pad.

An object of the present invention is to package an object to be packaged having a large unevenness and a large weight using only a paper pad, and having a structure that can withstand an external force during transport and a drop test. To provide a paper box.

[0006]

SUMMARY OF THE INVENTION The present invention is a wrapping paper box for packaging a large weight object to be packaged having a large projected area portion and a small projected area portion in a paper box, the outer side of which is provided. A paper outer box having a wall and a canopy, and fitted into the outer box,
A bottom plate that forms the bottom of the outer box and a paper bottom frame that extends upward from the outer periphery of the bottom plate and that has a cylinder frame that overlaps the inner wall of the outer wall, and the paper in the shape of a square cylinder with diagonal bracing plates. A group of paper cylinders that are formed by bending and are erected on the outer peripheral portion of the bottom frame, an inner wall of a quadrangular cylinder fitted in a space surrounded by the cylinders, and the inner wall. Is formed by bending the upward extension of the outer side, and has an inner paper box made of an edge plate that overlaps with the upper end surface of the cylindrical column group, and a large projection area portion of the packaged object to the edge plate. It is characterized in that the weight of an object to be packaged is added to the bottom plate via the group of cylindrical columns, and the small projected area portion is housed in the rectangular cylindrical frame.

[0007]

According to the present invention, the bottom frame is provided with the weight of the object to be packaged through the edge plate of the inner box and the group of paper cylinders filled in the space provided between the outer box and the inner box. It is in charge of the bottom plate of. The cylindrical column group has an outer periphery held by a cylindrical frame of a bottom frame and an inner periphery supported by the inner side wall of the inner box, and is integrated in four directions. Therefore, the weight of the packaged object can be supported in a wide area of the outer peripheral portion of the bottom plate, and necessary strength such as drop test strength can be obtained. In addition, the packaging paper box including the pad is made of paper that can be easily recycled at the time of disposal, and thus can be easily collected and recycled.

[0008]

1 to 3 show a packing paper box 100 according to the present invention, in which a gas water heater 1 having a weight of about 20 kg shown in FIG. 4 is packed for transportation. The gas water heater 1 includes a rectangular parallelepiped main body portion 11 fitted in a rectangular through hole H formed in a wall W, and a panel portion 12 provided on the front surface of the main body portion 11 and attached to an indoor wall surface.

The main body portion 11 is constructed by accommodating a burner, a heat exchanger and the like in a rectangular tubular housing 13 as a strength member. The front surface of the rectangular tubular housing 13 is an expanded edge portion 14 and is fastened to a back plate 15 of the panel portion 12 as a strength member of the panel portion 12. In this embodiment, the panel portion 12 is a large projected area portion of the article to be packaged and the main body portion 11 is a small projected area portion.

The wrapping paper box 100 is entirely made of corrugated cardboard, and has a bottomless outer box 2, a bottom frame 3 arranged at the bottom of the outer box 2, and a lower end of the outer box 2 abutting the bottom frame 3. And a bottomless inner box 5 which is fitted to the inner periphery of the cylindrical column 4 group and whose lid is expanded so as to overlap the upper end surface of the cylindrical column 4 group. Prepare The corrugated paper may have a three-layer structure in which corrugated sheets are sandwiched between the front and back board, or a five-layer structure in which two corrugated sheets are sandwiched between the front, middle and back board.

The bottomless outer box 2 has outer walls 21 to 24 each having a rectangular tubular shape, and a canopy 26 extending upward from each outer wall 21 to 24. In this embodiment, the canopy 26 includes four cover plates 2a to 2 extending from the upper ends of the outer walls 21 to 24.
d to the inside and bend a predetermined number of staples S
It is formed by binding (see FIG. 3).

The bottom frame 3 is a rectangular bottom plate 3 that closes the bottom hole of the outer box 2.
1, and the outer walls 21 to 2 extending upward from the bottom plate 31.
4 and a cylindrical frame portion 32 accommodated in the lower part of the inner surface of In this embodiment, the tubular frame portion 32 is formed by bending upwardly extending portions 33 to 36 of the bottom plate 31 in four directions, and gluing margin portions 37 and 37 provided on the sides of the front side extending portion 33 and the rear side extending portion 35. , 38, 38 are bent, overlapped with the inner wall surfaces of the extended portions 34, 36 on both sides, and fixed with an adhesive tape T.

The cylindrical column 4 folds both sides of a rectangular corrugated paper sheet with a corrugated paperboard sandwiched between the front and back papers in the forward direction (non-intersecting direction) of the corrugated paperboard into a square cylinder with a diagonal brace plate,
It is formed by fixing the required parts with adhesive tape. In this embodiment, the large plate 41, the outer plates 42, 42, the small plates 43, 43 having half the area of the large plate 41, the inner plates 44, 44 in contact with each other, and the diagonal bracing plates 45, 45 Has been formed.

In this embodiment, two cylindrical columns 4 are provided on the front surface,
One is formed on each of the side surfaces and one is formed on each of the back surfaces, and they are used with predetermined dimensions. The reason why the two cylindrical columns 4 are used on the front surface is that the panel portion 12 of the object to be packaged largely projects downward and supports the projecting portion. In addition,
In this embodiment, the cylindrical column 4 has a flat structure in which two square cylinders with diagonal brace plates are connected in series, but a structure having one square tube with a diagonal brace plate may be used.

The inner box 5 is extended from the four inner walls 51 to 54 constituting the inner wall 50 of a rectangular tubular shape to be inserted into the rectangular space surrounded by the group of cylindrical columns 4 and the upper ends of the inner walls 51 to 54. In addition, the lid plate 5a which is expanded in four directions and bent
5d. The lid plates 5a to 5d are arranged so as to overlap with the upper end surfaces of the cylindrical columns 4 respectively.

In this embodiment, since the panel portion 12 is large downward, a rectangular corrugated cardboard pad 55 is placed on the upper end surfaces of the two cylindrical columns 4 and 4 arranged on the front surface. Further, a soft sheet C such as a vinyl sheet for protecting the surface of the panel portion 12 is covered, and a top surface pad 6 interposed between the surface of the panel portion 12 and the canopy 26 is provided.

The top pad 6 is composed of an inner lid plate 61 which comes into contact with the surface of the panel portion 12 via the soft sheet C, and cylindrical column portions 62, 62 provided in front and rear portions thereof. Cylindrical column 62
Is formed by bending the front end and the rear end of a rectangular corrugated cardboard 5 times to a predetermined width to form a rising plate 63, a top plate 64,
The falling plate portion 65, the bottom plate portion 66, and the diagonal bracing plate portion 67 are provided, and a predetermined position is fixed with an adhesive tape,
It is formed in a rectangular tube shape.

In this embodiment, the upper surface between the front cylinder pillar portion 62 and the rear cylinder pillar portion 62 is used as a portion to which the accessory 7 is attached. In this accessory 7, a cut is made in a part of the falling plate portion 65 and the top plate portion 64 of the front side cylindrical column portion 62, and a laminated plate portion 68 is provided on the upper surface of the lid plate portion 61. It is adhered to the portion 68 using an adhesive tape T. The overlapping plate portion 68 has a function of reinforcing the inner lid plate 61.

The packaging operation is performed as follows. The cylindrical column 4 group is erected inside the bottom frame 3 placed on the belt conveyor, and the inner side wall 51 of the inner box 5 is inserted into the cylindrical column 4 group. Next, the main body portion 11 of the gas water heater 1 is inserted into the inner wall 51 of the inner box 5 in the group of cylindrical columns 4, and the panel portion 12 is hooked on the lid plates 5a to 5d. Next, the outer box 2 is covered from above, and the bottom frame 3, the group of cylindrical columns 4, the inner box 5 and the gas water heater 1 are housed in the packaging paper box 100 through the bottom holes.

Next, the surface of the panel portion 12 is covered with the soft sheet C, and the top pad 6 is placed on the surface of the panel portion 12 to cover the lid plates 2a-2.
Bend d and cover. Further, as shown in FIG. 3, the cover plates 2a to 2d are bound with staples S, and the front and rear are wrapped with a polypropylene band B to complete the process. In this state, as shown in FIG. 2, the lower end of the main body is the bottom plate 31 of the bottom frame 3.
A few centimeters above. Gas water heater 1
Is transmitted to the group of cylindrical columns 4 through the lid plates 5a to 5d, and is covered by the large area of the outer peripheral portion of the bottom plate 31 of the bottom frame 3.

Further, the group of cylindrical columns 4 is supported by the cylindrical frame portion 32 on the outer periphery and is supported by the inner walls 51 to 54 of the rectangular cylindrical shape on the inner periphery so as to be integrated with each other. It acts as a thick frame and exhibits sufficient strength for drop tests and durability tests. At this time, since the bottom plate 31 of the bottom frame 3 acts as a reinforcing panel for the tubular frame portion 32, the height of the tubular frame portion 32 can be made shorter than the height of the inner side walls 51 to 54.

In addition, in the above-mentioned embodiment, the outer box 2 without the bottom cover is used, but this is to perform the above-mentioned packaging work efficiently on the conveyor. The outer box may be a bottomed lid and the bottom plate 31 of the bottom frame 3 may be omitted, or the outer box of the bottomed lid and the bottom frame 3 with the bottom plate 31 may be combined. The bottom lid of the outer box 2 may be a double bottom lid formed by bending four lid plates extending from the lower ends of the outer walls 21 to 24 inward.

[Brief description of drawings]

FIG. 1 is an exploded view of a packaging paper box.

FIG. 2 is a cross-sectional view of a packaging paper box in use.

FIG. 3 is a perspective view of a packaging paper box in use.

FIG. 4 is a perspective view of a gas water heater that is an object to be packaged.

[Explanation of symbols]

1 gas water heater 2 outer box 3 bottom frame 4 cylindrical columns 5 inner box 5a-5d Cover plate (edge plate) 6 Top pad 21-24 outer wall 26 canopy 31 bottom plate 32 Cylinder frame (cylinder frame) 51-54 inner wall 100 wrapping paper boxes

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65D 5/50 101 B65D 77/26

Claims (3)

(57) [Claims] 1. A wrapping paper box for packaging a heavy object to be packaged having a large projected area portion and a small projected area portion in a paper box, the paper outer box having an outer wall and a canopy. A box, a bottom plate that is fitted into the outer box, forms a bottom of the outer box, and a paper bottom frame that extends upward from the outer periphery of the bottom plate and that overlaps the inner wall of the outer wall; Is bent into a square tube with diagonal brace,
A group of paper cylinders standing upright on the outer peripheral portion of the bottom frame, an inner wall of a rectangular tube fitted in a space surrounded by the group of cylinders, and an extension of the inner wall above And a paper inner box formed of an edge plate that is formed by bending the portion outward and overlaps the upper end surface of the cylindrical column group, and places a large projection area portion of the object to be packaged on the edge plate to be packaged. Is added to the bottom plate via the group of cylindrical columns, and the small projected area portion is housed in the rectangular cylindrical frame. 2. The canopy of the outer box according to claim 1,
Between the item to be packaged, an inner top plate that presses the upper surface of the item to be packaged, and extension parts to both sides of the inner top plate are formed by bending them into a square tubular shape with diagonal bracing plates, and the upper face is the canopy. A packaging paper box, characterized in that a paper-made top pad composed of a rectangular tubular portion that can be pressed is interposed. 3. The packaging paper box according to claim 2, wherein the space between the rectangular cylindrical portions is used as a storage chamber for accessory parts.