JPH07215366A - Package cushioning body - Google Patents

Abstract

PURPOSE:To form a package cushioning body which is inexpensive to produce, light in weight, bearable to great load, high in cushioning performance and easy to dispose after use by fitting a plastic air bag within a tubular body of flexible material. CONSTITUTION:A tubular body 2 is made of flexible material, e.g. the paper of a predetermined thickness, an air bag 3 made of plastic film and filled with air is placed in the tubular body 2 to form a cushioning body 1, which is set at a predetermined place of a packaging case. In this case, a constriction 4 may be formed in at least one intermediate portion of the air bag 3 in the lengthwise direction. Since the deflection force of the tubular body 2 and the air compressive force in the air bag 3 both receive the load of a packaged object or the load from outside, the cushioning body 1, though lightweight, can withstand great load and becomes high in cushioning performance. Also, since the object being packaged or an exterior obstacle is kept out of direct contact with the air bag 3, the air bag is hard to tear.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushioning body for packing which protects a packaged object such as a musical instrument or an electric product housed in a packing box from an impact.

[0002]

2. Description of the Related Art Conventionally, a cushioning body formed by molding foamed plastic into a predetermined shape, a cushioning body formed by bending corrugated cardboard into a box shape, or a cushioning body made of an air bag made of a plastic film is used at a corner or a bottom of a packing box. Attached to
These buffers are used to protect the packaged items contained in the packaging box from impact.

[0003]

The foamed plastic cushioning body is expensive because it requires a mold for molding. Moreover, there is a drawback that the volume is bulky, the storage and transportation space is increased after use, and the treatment is difficult due to problems such as pollution. Further, the corrugated cardboard cushioning body has a drawback that the shock absorbing ability is poor and the cushioning performance is deteriorated. Further, the cushioning body made of an air bag made of a plastic film is liable to be broken when the protrusion directly contacts with the air bag or rubs against a packing material, a packing box or the like, and has a drawback that reliability becomes poor. In particular, as shown in FIG. 9, in the packaging box 15 formed by bending corrugated cardboard into a box shape, the end 16a of the metal stitch (stitch metal) 16 for fastening the overlapping portion 15a is insufficiently bent. It is easy for the packing box 1 to project toward the side or the exposed end 17 of the adhesive applied to the overlapping portion 15a to project like a needle.
When the buffer 18 made of an airbag is used for 5, the probability that the end 16a of the stitch 16, the exposed end 17 of the adhesive material, the corner of the package 19 or the like will come into contact with the buffer 18 and tear will increase. The reliability becomes extremely poor. It is an object of the present invention to obtain a new packing cushioning body that eliminates the above drawbacks.

[0004]

The present invention is configured as follows in order to achieve the above object. That is, a cylindrical body having a predetermined wall thickness is formed of a flexible material, and a cushioning body containing an air bag in which air is sealed with a plastic film is provided in the cylindrical body, and the cushioning body is provided at a predetermined location of a packing box. It is configured to be attached to. In this case, it is preferable that the cylindrical body is formed of a paper material into a cylindrical shape. Further, it is preferable that the airbag has a constricted portion at least at one position in a longitudinal middle portion.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 is a sectional front view of an essential part showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. In FIGS. 1 and 2, reference numeral 1 denotes a cushioning body, which is formed by inserting an airbag 3 into a cylindrical body 2.

The cylindrical body 2 is formed by cutting a commercially available paper tube (circular paper tube) having a diameter of 45 mm and a wall thickness of 1 mm into a length of 170 mm to have a cylindrical shape with end dimensions as shown in FIG. It becomes.
The diameter, the wall thickness, and the length of the cylindrical body 2 are appropriately set according to the weight of the package or the height of the packaging box 10 described later. Further, the airbag 3 is formed in a hollow cylindrical shape in which air is sealed with a plastic film such as a polypropylene film, a polyethylene film, or a vinyl chloride film, and its diameter and length are larger than those of the tubular body 2. Is also made slightly smaller and is inserted into the cylindrical body 2.

As shown in FIGS. 1 and 4, the airbag 3 has a constricted portion 4 formed by closing the central portion in the longitudinal direction by heat fusion, and can be bent around the constricted portion 4. The air chambers 5, 5 on both sides in the longitudinal direction (left and right) are independent so that even if one is torn, the other air chamber 5 can maintain a predetermined cushioning performance.

FIG. 5 and FIG. 6 show a usage state of the buffer body 1. In FIG. 5, reference numeral 10 denotes a packing box formed of corrugated cardboard in a rectangular parallelepiped shape. At the four corners of the packing box 10, three cushions 1 bound with rubber bands 6 are placed upright in the vertical direction. In addition, the bottom wall 1 of the packaging box 10
Locking tools 13 are attached to the four positions of 1 at a predetermined pitch, and one buffer 1 is laid horizontally on each locking tool 13 and locked.

As shown in FIG. 6, the engaging member 13 is formed by cutting corrugated cardboard into a rectangular shape, punching out the inner peripheral portion of the corrugated paper, and projecting both ends in the longitudinal direction toward the central portion in the longitudinal direction. After forming the pieces 14 and fixing the main body of the locking tool 13 to the four locations of the bottom wall 11 with adhesives, the locking pieces 14 are raised upward and both ends in the longitudinal direction of the buffer body 1, That is, they are fitted to both ends of the tubular body 2, and thereby the buffer body 1 is locked to the bottom wall 11 immovably in the longitudinal direction and the width direction.

Further, when the buffer 1 is attached to the intermediate portion of the bottom wall 11 and the side wall 12 of the packaging box 10, as shown in FIG. 7, the buffer 1 is bent at the center in the longitudinal direction at a right angle. One half is placed on the bottom wall 11, and the upper half is placed on the side wall 12.
You may make it contact | abut.

FIG. 8 shows another embodiment. In FIG.
Reference numeral 7 denotes a buffer body, which forms a tubular body 8 having an L-shaped cross section, and the same airbag 3a, 3b, 3c as the airbag 3 described above is fitted and inserted into the bottom portion, the standing portion and the corner portion of the tubular body 8, respectively. It becomes. When the buffer body 7 is attached to the four corners of the packaging box 10, the buffer body 7 is erected in the vertical direction and the outer surfaces 8a, 8
b is brought into contact with the inner surface of the corner of the side wall 12. Also, when attaching to the corners of the bottom wall 11 and the side wall 12 between the respective corners, they are laid horizontally and one surface (lower surface) 8a on the outer side is placed on the bottom wall 11.
Then, the other surface (standing surface) 8 b is brought into contact with the side wall 12.

Since the present invention is configured as described above, the buffer body 1 (7) receives the load (impact) of the package or the load (shock) applied from the outside by the thick-walled cylinder 2 (8). When 2 flexes, the load is dispersed and the airbag 3 (3a, 3a
b, 3c), the air in the airbag 3 is compressed. That is, the buffer 1 (7) applies the load of the package or the load applied from the outside by both the bending force of the tubular body 2 (8) and the compressive force of the air in the airbag 3 (3a, 3b, 3c). As it is received, it is lightweight and can withstand a large load, and has high cushioning performance. Further, since the packaged object or the external obstacle does not directly contact the airbag 3, the airbag 3 is less likely to tear.

Further, since the cushioning body 1 is formed by the cylindrical body 2 and the airbag 3 having a simple shape, it is inexpensive and lightweight. After use, the volume of the airbag 3 can be reduced by extracting the airbag 3 from the tubular body 2, tearing the airbag 3 and removing the air inside, and the amount of plastic used in the airbag 3 can be reduced. Since it is very few, processing becomes easy.

[0014]

As is apparent from the above description, the present invention has a simple structure, is inexpensive, and is lightweight. In addition, it withstands a large load and has a high cushioning performance. In particular, when the cylindrical body is formed of paper material into a cylindrical shape and a plastic airbag is fitted therein, the airbag can be fitted in the cylindrical body without a gap, and a weight is applied. At this time, the cylindrical body is deformed substantially in proportion to the magnitude of the weight, and the restoring force is increased, so that stable cushioning performance can be exhibited even under a high load. In addition, the amount of plastic used is extremely small, and processing after use is easy.

[Brief description of drawings]

FIG. 1 is a sectional front view of an essential part showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a perspective view of a cylinder according to the present invention.

FIG. 4 is a perspective view of an airbag according to the present invention.

FIG. 5 is a perspective view of a cushioning body according to the present invention attached to a packaging box.

FIG. 6 is a cross-sectional view showing a state in which the shock absorber according to the present invention is attached to the bottom wall of the packaging box.

FIG. 7 is a cross-sectional view showing a state where a cushioning body according to the present invention is attached to a side portion of a packaging box.

FIG. 8 is a perspective view showing another embodiment of the shock absorber according to the present invention.

FIG. 9 is a sectional view of an essential part showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Buffer body 2 Cylindrical body 3 Airbag 3a Airbag 3b Airbag 3c Airbag 4 Constriction part 5 Air chamber 7 Buffer body 8 Cylindrical body 8a Outside surface 8b Outside surface 6 Rubber bands 10 Packing box 11 Bottom wall 12 Side wall 13 Stopper 14 Locking piece

Claims (3)

[Claims] 1. A cushioning body, which is made of a flexible material and has a predetermined wall thickness, and in which an air bag in which air is sealed by a plastic film is housed is provided.
A cushioning body for packing, wherein the cushioning body is attached to a predetermined position of a packaging box. 2. The packing cushioning body according to claim 1, wherein the cylindrical body is formed of a paper material into a cylindrical shape. 3. The packing cushioning body according to claim 1, wherein the airbag has a constricted portion formed in at least one position of a longitudinally intermediate portion.