JP2570664Y2 - Sheet packaging box - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a packing box for packing sheets of paper such as cut sheets, and more particularly, to a sheet in which the sheets are susceptible to an external environment such as thermal recording paper or pressure-sensitive recording paper. The present invention relates to a packing box for packing and transporting paper sheets.

[0002]

2. Description of the Related Art Sheets used by end users, especially information recording papers, such as heat-sensitive recording papers and pressure-sensitive recording papers, are disadvantageous in that they easily develop color under external impact or high-temperature and high-humidity conditions. When transporting these, as shown in FIGS. 7 and 8, the required number of sheets are packed in a heat-insulating packaging bag 1 having an inner surface lined with an aluminum coating or a synthetic resin film such as polyethylene or polypropylene. A plurality of such packages are stacked and stacked in a cardboard box 3 shown in FIG. 6 for transportation. As described above, the packaging bag 1 for packaging the sheet P is made of a thin vinyl packaging sheet lined with an aluminum coating or a synthetic resin film, so that the packaging sheet is formed into a bag shape. The welding strength of the welding portions (heat sealing portions) 2 and 2 (FIG. 8) on both the left and right sides is relatively weak, and the sheets wrapped in the packaging bag 1 are packed in a packing box (for example, a cardboard box) and transported. During the loading or loading / unloading operation, the welded portion 2 on the side surface of the packaging bag 1 is peeled off as shown in FIG. 8 (indicated by an arrow) as shown in FIG. 8, or the edge of the sheet P in the packaging bag. May come into contact with the inner peripheral wall of the packing box 1 in an impact and develop color due to frictional heat generated at the time of the impact,
Alternatively, a case has occurred in which the corner of the sheet collides with the vicinity of the inner peripheral corner of the packing box 3 and the corner of the sheet is bent or damaged.

[0003]

SUMMARY OF THE INVENTION The present invention minimizes the occurrence of coloring damage of the above-mentioned packaging bag and the sheets wrapped therein when transporting the sheets by the packing box. It is intended to propose a packing box of this kind that can be used.

[0004]

In order to solve the above-mentioned problems, according to the present invention, an inner peripheral wall of a packing box main body 4 is provided according to the first aspect of the present invention. A shock absorbing member 6 for absorbing the contact impact when a sheet P to be packed, which is packed in the main body, comes into contact with the inner peripheral wall 5 is provided on the inner peripheral wall 5 integrally or integrally. In the inner peripheral wall 5 of the box main body 4, a configuration is adopted in which the impact absorbing member 6 is not positioned near the corner 5a.

[0005] Further, according to the second aspect, the packing box main body 4
Of the inner peripheral wall corner 7 and the edge 6a of the shock absorbing member 6
2. The configuration according to claim 1, wherein the opposing interval with the above is set to approximately 10 to 40 mm.

Further, in the third aspect, the structure of the first or second aspect is adopted in which the thickness of the shock absorbing member 6 is set to approximately 3 to 20 mm.

Further, according to a fourth aspect of the present invention, the impact absorbing member 6 is selected from at least one of a cardboard material, a foamed synthetic resin material, and a paperboard. Things.

[0008]

According to the first aspect of the present invention, even if the edge of the sheet P impacts against the inner peripheral wall 5 side of the packing box body 4 during transportation, the inner peripheral wall 5 has the shock absorbing member 6 attached thereto. Is provided, the impact force is absorbed by the impact absorbing member 6, and the sheet P
There is no generation of frictional heat due to the impact at the edge of the color, and no color is formed. Further, since no impact pressure is applied to the sheet P, the welded portion 2 of the packaging bag 1 for packaging the sheet P is also very unlikely to come off.

Further, of the inner peripheral wall 5 of the packing box main body 4,
Since the impact absorbing member 6 is not positioned near the corner 5a, there is no space between the corner 5a of the inner peripheral surface of the packing box body 4 and the corner of the sheet P. Since the gap 8 is always formed and the impact pressure from the packing box body 4 is not transmitted to the corners of the sheet P, the corners of the sheet P are not damaged.

According to the second aspect, the opposing distance L between the inner peripheral wall corner ridge line 7 of the packing box main body 4 and the edge 6a of the shock absorbing member 6 is set within a range of approximately 10 to 40 mm. Thereby, a sufficient gap 8 is formed between the corner of the sheet P and the corner 5a of the inner peripheral surface of the package box main body 4, so that the ridge can be effectively prevented from being damaged. The opposing interval L is 1
At 0 mm or less, as a result of the experiment, there is a possibility that the corner of the sheet P collides with the corner 5a of the inner peripheral surface of the packing box main body 4 or in the vicinity thereof, and the corner of the sheet P may be bent or damaged. Yes,
On the other hand, if it is 40 mm or more, the contact of the impact absorbing member 6 with the end face of the sheet P is insufficient, and the essential impact absorbing power cannot be sufficiently exhibited. Furthermore, the sheet P may locally contact the edge 6 a of the shock absorbing member 6, and there is a possibility that a streak or a color is locally formed on the edge of the sheet P.

It is not always necessary to provide the shock absorbing member 6 continuously on each of the four surfaces of the inner peripheral wall 5 except for the four corners of the inner peripheral wall of the packing box main body 4; May be provided intermittently.

According to the third aspect, the shock absorbing force of the sheet P from the package box body 4 is equal to the thickness D of the shock absorbing member 6.
Is most preferably achieved by setting the distance within a range of about 3 to 20 mm. When the thickness D is 3 mm or less,
The shock absorbing power is insufficient, and if it is more than 20 mm, the packing box is bulky and not practical.

Further, according to the fourth aspect, since the shock absorbing member 6 is made of corrugated cardboard or paperboard, this kind of packing box is generally made of corrugated cardboard, so that the workability between the both is good. Also, both can be integrally provided by an adhesive, or the packing box and the shock absorbing member 6 can be integrally provided at the time of manufacturing the packing box, which is advantageous in mass production. In addition, since the shock absorbing material 6 is formed of a foamed synthetic resin material, by selecting a synthetic resin having various foaming degrees, an elastic material having a required shock absorbing power can be easily obtained. Can be provided. However, in consideration of post-processing such as environmental considerations, it is preferable to use corrugated cardboard or paperboard rather than foam synthetic resin.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a description will be given mainly of a packing box for thermal recording paper P, which is the most preferred embodiment among sheets.

FIG. 1 shows the appearance of an embodiment of the present invention. The four sides of the inner peripheral wall 5 of a cardboard box main body 4 extend from the bottom to the top as shown in FIGS. Made of corrugated cardboard or Styrofoam, thickness 3 to 20
The shock absorbing member 6 of mm is fixed by an adhesive, and the thermal recording paper P is stored in the packing box main body 4. As described above, the shock absorbing member 6 may be provided intermittently on the inner peripheral wall 5 of the packing box main body 4 as long as the shock absorbing force is not lost. As described above, the required number of heat-sensitive recording papers P, for example, 120 sheets are wrapped in a packaging bag 1 made of vinyl and welded (heat-sealed) on both sides, and the heat-sensitive recording paper P is packed in the packing box body 4 as 20 wraps, for example. It is supposed to be. When the plurality of wrapped thermal recording papers P are stored in the packing box main body 4, the four peripheral surfaces of the thermal recording papers P come into contact with the shock absorbing member 6 via the packaging bag 1. A sufficient gap 8 is formed between the vicinity of the corner portion 5a of the inner peripheral wall 5 and the corner portion of the thermal recording paper P as shown in FIG. 1 or FIG. .

As shown in FIG. 2, in order to form the space 8, the opposing distance L between the corner 5a of the inner peripheral wall 5 of the packing box body 4 and the edge 6a of the shock absorbing member 6 is about 10 to 40 mm. The impact absorbing member 6 is formed so that the edge 6a of the impact absorbing member 6 is not located near the corner 5a of the inner peripheral wall of the packing box body 4. FIG. 3 is a vertical cross-sectional view of a state of being packed in the packing box 9,
Is an adhesive tape such as a packing tape for packing.

FIG. 4 shows an embodiment in which the shock absorbing member 6 is formed of a foamed synthetic resin material. The shock absorbing member 6 is fixed to the inner peripheral surface of the packing box body 4 by an adhesive. By forming the shock absorbing member 6 of the foamed synthetic resin material in this manner, the impact of the thermal recording paper P on the packaging box main body 4 depends on the material of the packaging box main body 4 and the hardness of the thermal recording paper P as the article to be packed. It is possible to easily select a foam having a degree of foaming having an optimal elasticity of the absorbing power, and it can be used practically.

Next, the thermosensitive recording paper P is wrapped in a vinyl wrapping bag 1 which is a conventional cardboard packing box 3.
The degree of damage in the case of being packed in (FIG. 6) and in the case of being packed in the cardboard box 9 according to the present invention is determined by a drop test (drop test (free fall) according to JISZ0202) of both.
Was measured.

[Test Method] (1) A4 (210 × 297 mm actual size) or B4 (2
120 sheets of thermal recording paper cut to a size of 57 × 364 mm (actual size) were put into a vinyl packaging bag in which two side surfaces were welded (heat-sealed) in the longitudinal direction to form one package.

Separately, a cardboard packaging box for storing thermal recording paper (width, height, width 230 × 320 × 222 m)
m, or 290 × 390 × 222 mm)
A shock absorbing plate made of cardboard or styrofoam having a thickness of 2 to 10 mm so that four corners do not contact the four inner peripheral walls of the cardboard box body, for example, so that a gap of about 8 to 50 mm is formed at the four corners. Was attached using glue. In addition, the comparative example of the cardboard packaging box as a conventional product has a width and height of 230 × 315 × 222 mm or 28 mm.
A normal cardboard box having a size of 0 × 390 × 222 mm and having no shock absorbing plate adhered to the inside was used.

In the thus-prepared cardboard packaging box, 20 packets of the above thermosensitive recording paper (20 packets of A4 size net weight 12.4 kg, B4 size of 12.4 kg)
9 kg) and stored, and the upper lid of the packing box was closed.

Five packing boxes, each of which has the same measurement conditions, are prepared as packing goods, which are the working goods of the present invention packed as described above (ie, five working goods of each of the following working goods 1 to 13). On the other hand, five packing boxes without the above-mentioned shock-absorbing plate in which the thermosensitive recording paper was packed and packed under the same conditions as the conventional example as a comparative example were prepared, and these packing boxes T were slanted as shown in FIG. Then, the corner Ta of the box collides with the floor surface G first, and is naturally dropped five times from the height of 60 cm and 80 cm on the concrete floor surface, and the thermosensitive recording paper in the packing box and the packaging thereof are packed. The state of breakage of the plastic packaging bag was measured.

Table 1 below shows the measurement conditions of the products 1 to 13 of the present invention and the conventional products 1 and 2 of the comparative examples, and Table 2 shows the measurement results of the average value of five drop tests.

[0024]

[0025]

From the above measurement results, in the product of the present invention,
Damage to the packaging bag has been significantly reduced, whereas most of the conventional products of the comparative examples have damage such as peeling of the welded portion (heat-sealed portion).

In the thermal recording paper, which is a product, in the embodiment of the present invention, no coloring phenomenon or damage to the corners of the recording paper is observed at all, whereas in the conventional product of the comparative example, It can be seen that almost half of the thermosensitive recording papers have a coloring phenomenon and the corners thereof are bent.

Further, from the above measurement results, the opposing distance between the edge of the corner of the inner peripheral wall of the packing box main body and the edge of the shock absorbing member is 1
If it is less than 0 mm, it can be seen that the corner of the thermal recording paper accommodated in the packing box collides with the inner peripheral surface of the packing box body and is severely bent and damaged. In addition, when the above-mentioned opposing interval is 40 mm or more, the impact absorbing power is insufficient,
It was found that streaks entered the edges of the thermal recording paper and that the welded portion of the packaging bag came off.

From the above measurement results, it can be seen that when the thickness of the shock absorbing member is 3 mm or more, a remarkable shock absorbing power is exhibited, but when the thickness is less than 3 mm, the shock absorbing power is slightly inferior.

[0030]

According to the first aspect of the present invention, the impact force from the packing box body applied to the sheet during transportation is absorbed by the shock absorbing member, and the edge of the sheet generates frictional heat due to the impact. There is no color development. Further, since no impact pressure is applied to the sheet, the welded portion of the packaging bag for packaging the sheet is not peeled off.

Furthermore, according to the first aspect, a sufficient gap is always formed between the corner of the sheet most susceptible to damage during transportation and the vicinity of the corner of the inner peripheral surface of the packing box. Therefore, even if the packaging box itself receives an external impact, the impact is not transmitted to the corners of the sheet, so that the corners of the sheet are not damaged. Therefore, a good product can be reliably transported to the destination.

According to the second aspect of the present invention, the opposing distance between the corner of the inner peripheral wall of the package box main body and the edge of the shock absorbing member is set within a range of about 10 to 40 mm, so that the sheet A sufficient gap 8 is formed between the corner and the corner of the inner peripheral surface of the packing box main body, so that damage to the corner can be effectively prevented. As a result of the experiment, when the opposing distance between the two was 10 mm or less,
The corners of the sheet may collide with or near the corners of the inner peripheral surface of the package box body, causing the corners of the sheet to be bent or damaged. Since the contact of the shock absorbing member with the sheet is insufficient and the essential shock absorbing power cannot be sufficiently exerted, the sheet locally contacts the edge of the shock absorbing member and It can be seen that there is a possibility that streaks or color development may occur locally, and furthermore, there is a possibility that the welding portion (heat seal portion) of the packaging bag for packaging the sheet is peeled off.

According to the third aspect of the present invention, the shock absorbing force of the sheet from the package box main body is approximately 3 to 3 mm.
The best performance can be obtained by setting the thickness within the range of 20 mm. If the thickness is less than 3 mm, the impact absorbing power is insufficient, and if it is more than 20 mm, the packing box is bulky and not practical.

According to the fourth aspect, since the shock absorbing member is made of corrugated cardboard or paperboard, this type of packing box is generally made of corrugated cardboard, so that the workability between the two is good. It is also possible to integrally provide the both with an adhesive, or the packaging box and the shock absorbing member can be integrally provided when the packaging box is manufactured, which is advantageous in mass production and can be manufactured at low cost. In addition, since the shock absorbing member is made of foamed synthetic resin, it is easy to select an elastic shock absorbing material that exhibits the optimum shock absorbing power according to the conditions such as the material and hardness of the sheet and packing box. This can more effectively prevent the occurrence of damage during the transport of the sheet.

[Brief description of the drawings]

FIG. 1 is an external perspective view of an embodiment of the present invention.

FIG. 2 is a cross-sectional plan view of the same.

FIG. 3 is a vertical sectional front view of the same.

FIG. 4 is a cross-sectional plan view of a main part of another embodiment.

FIG. 5 is a diagram showing a method of dropping a packing box in a drop test of a product of the present invention and a conventional product of a comparative example.

FIG. 6 is a cross-sectional plan view of a conventional example.

FIG. 7 is a perspective view showing a wrapping state of a sheet targeted by the present invention.

FIG. 8 is a longitudinal sectional view showing a damaged state during transportation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Packaging bag 2 ... Welding part of packaging bag P ... Sheet paper 3 ... Conventional packing box 4 ... Packing box main body 5 ... Inner peripheral wall of packing box 5a ... Corner of inner peripheral wall of packing box 6 ... Shock absorbing member 6a … The edge of the shock absorbing member 7… the ridge line at the corner of the inner wall of the packing box 8… the gap 9… the packing box according to the present invention

Claims (4)

(57) [Scope of request for utility model registration] An impact absorbing member for absorbing an abutting impact when a sheet to be packed, which is to be packed, packed in the main body abuts against the inner peripheral wall of the main body of the packing box. A sheet packaging box which is provided integrally and is arranged such that the impact absorbing member is not positioned near the corner of the inner peripheral wall of the packaging box body. 2. The packing box for a sheet according to claim 1, wherein a distance between the edge of the corner of the inner peripheral wall of the packing box main body and the edge of the shock absorbing member is set to approximately 10 to 40 mm. 3. The sheet packaging box according to claim 1, wherein the thickness of the shock absorbing member is approximately 3 to 20 mm. 4. The sheet packaging box according to claim 1, wherein the shock absorbing member is selected from at least one of a corrugated cardboard material, a foamed synthetic resin material, and a paperboard.