JP4030333B2 - Cushioning material - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cushioning material made of a synthetic resin film that wraps an article to be packaged.
[0002]
[Prior art]
Conventionally, as a cushioning material to be used when packaging an article to be packaged, a foamed polystyrene cushioning material is generally known. Recently, a cushioning material that replaces the foamed foam cushioning material has been desired. In view of this, as a buffer material replacing the foamed polystyrene buffer material, for example, a buffer material as disclosed in JP-A-4-327158 has been proposed. In the cushioning material disclosed in Japanese Patent Laid-Open No. 4-327158, five air bags made of synthetic resin are connected in correspondence with the front, top and bottom, and left and right sides of the package, and these five At least one of the bags is provided with an air inlet, and the five air bags can be filled with air. The cushioning material is placed on both ends of the packaging object in a state of being filled with air. In this state, the cushioning material is stored in a paper packaging box and used for packaging the packaging object.
[0003]
[Problems to be solved by the invention]
However, in such a conventional example, two cushioning materials are required to be put on both ends of the package, and these two cushioning materials are made in a state where they are separated from the beginning. Improvement in manufacturing workability has been desired due to the demand for down.
[0004]
This invention solves such a subject, and it aims at enabling it to manufacture efficiently the shock absorbing material covered on the both ends of a packaged object.
[0005]
[Means for Solving the Problems]
In order to solve this problem, the present invention integrally heats and welds the outer peripheral portions of the two sheet materials made of synthetic resin film, and integrally includes a buffer sheet portion distributed to the left and right with the air injection path as a boundary. Each of the buffer sheet portions is provided with a plurality of elongated sealing bag portions each partitioned by a welded portion provided at predetermined intervals in the length direction of the air injection path. The sealing bag portion of the buffer sheet portion is configured to be filled with air from an air inlet at one end of an air injection path formed on one end side in the length direction of the sealing bag portion, and is filled with air. Each part is configured to maintain a sealed state independently, and the cushion sheet parts on both sides are folded in a flat state by a partial welded part for folding, and has a receiving part with a space having a predetermined thickness Formed as In the two sides of the outer peripheral portion and the parallel length direction of the sealed bag portion is closed by heat welding, in which along the air injection passage and summarized in that configured to be separated from each other. Further, the gist of the present invention is that the buffer sheet portions that are folded and connected to each other via an air injection path can be filled with air from a common air injection port. Moreover, this invention makes it a summary to provide the air inlet for inject | pouring air separately with respect to both the buffer sheet | seat parts. Further, according to the present invention, a weld portion having an appropriate width is formed by welding two synthetic resin film sheet materials of the base to each other at the center portion in the width direction of the air injection path, and the center portion in the width direction of the weld portion. The gist is that a perforated cut line is formed.
[0006]
With this configuration, two cushioning materials that are put on both ends of the package are made at the same time, and can be separated from each other during use. It can be done efficiently, and a significant cost reduction can be achieved.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
First, the first embodiment shown in FIGS. 1 to 6 will be described. In FIG. 1, reference numeral 1 denotes a buffer material substrate according to the present embodiment. This substrate 1 heats and welds the outer peripheral portion 1 a of two synthetic resin film sheet materials and uses a central air injection path 2 as a boundary. And buffer sheet portions 3A and 3B distributed to the left and right. Each of the buffer sheet portions 3A and 3B is provided with a plurality of elongated sealing bags 4 having the same size, which are partitioned by partition welding portions 1b provided at equal intervals in the length direction of the air injection path 2, respectively. Air can be filled from the air inlet 2a at one end of the common air injection path 2 formed on one end side in the length direction of the sealing bag portion 4 in the sealing bag portions 4 of the buffer sheet portions 3A and 3B on both sides and sealed. There is a check valve 5 (detailed explanation is omitted) in contact with the air injection path 2 in one end in the length direction of each sealing bag portion 4 so that the air filled in the bag portion 4 does not escape from the sealing bag portion 4. Even if any of the sealed bag portions 4 is damaged after the air is filled, the air flows out only from the damaged sealed bag portion 4. As can be seen from FIG. 1, the buffer sheet portions 3 </ b> A and 3 </ b> B are connected via a central air injection path 2, and two sheets of the base body 1 are formed at the center in the width direction of the central air injection path 2. A welded portion 6 having an appropriate width formed by welding synthetic resin film sheet materials to each other is formed, and a perforated cut line 7 is formed at the center in the width direction of the welded portion 6. In addition, a tear notch portion 8 is formed at the extended position of the perforated cut line 7 in the heat-welded outer peripheral portion 1a on one end side of the air injection path 2 and the other end of the air injection path 2 A perforated cut line 7 is formed at an extended position of the perforated cut line 7 in the outer peripheral portion 1 a that is heat-welded on the side. Further, a partial welded portion 9 for bending is formed at an appropriate position in the length direction of each of the sealed bag portions 4 of the buffer sheet portions 3A and 3B. The air injection port 2a at one end of the air injection path 2 is provided at a position offset from the center in the width direction of the air injection path 2 toward one of the buffer sheet portions 3A, and the air is welded by the outer peripheral portion 1a. The insertion state with respect to the injection path 2 is maintained. The welded portion 6 is divided at a position close to the air inlet 2a so that the air injected from the air inlet 2a flows into the respective sealed bag portions 4 of the buffer sheet portions 3A and 3B on both sides, and the base 1 The two synthetic resin film sheet materials are non-welded portions that are not welded to each other, and the air passage 10 is formed. There is no perforated cut line 7 at the position of the air passage 10.
[0008]
As shown in FIG. 2, the base 1 having the above-described configuration is folded upward on the buffer sheet portions 3 </ b> A and 3 </ b> B on both sides in a flat state, and the end portions of the respective buffer sheet portions 3 </ b> A and 3 </ b> B The outer peripheral portions 1 a that are overlapped with each other are heat-welded to be closed at two sides of the outer peripheral portion 1 a on both sides parallel to the length direction of the sealing bag portion 4. In FIG. 2, 11 is the welding part. In addition, when buffer sheet part 3A, 3B is folded, the outer peripheral part 1a of the length direction edge part of the sealing bag part 4 located facing on the said air injection path 2 shall not be heat-welded. To do. In the state shown in FIG. 2, by injecting air from the air injection port 2 a, air is injected from the air injection path 2 into each sealed bag portion 4 via the check valve 5, and each sealed bag portion 4. Can be brought into the state shown in FIG.
[0009]
That is, FIG. 3 shows a state in which air is injected from the air injection port 2a after being heat-welded at the heat-welded portion 11 between the outer peripheral portions 1a parallel to the length direction of the sealing bag portion 4 described above, and turned over. In the state where the buffer sheet portions 3A and 3B connected by the air injection path 2 are inflated, the cushioning materials 12 and 12 having two accommodating portions having a substantially rectangular plane shape are formed, and the tear notch portion By tearing from 8 and cutting along the perforated cut line 7, the two cushioning members 12, 12 are separated as shown in FIG. 4.
[0010]
Cushioning material 12, 12 is divided into the two, by the partial penetration attaching portion 9 for the bending is formed as having an accommodating portion with a space having a predetermined thickness (depth), the heating Openings 13 and 13 are formed on the side of the air injection path 2 that is not welded. The cushioning materials 12 and 12 divided into two are stored in a packaging box (not shown) made of a corrugated board or the like in a state where the cushioning materials 12 and 12 are covered on both sides of the package 14 as shown in FIGS. With this, the packaging is completed.
[0011]
(Embodiment 2)
Next, the second embodiment shown in FIG. 7 will be described. In the first embodiment, air can be injected from two air inlets 2a into the two buffer sheet portions 3A and 3B. In the second embodiment, air injection ports 2a are provided on both sides of the welded portion 6 so that air can be separately injected into the two buffer sheet portions 3A and 3B, and the welded portion 6 is formed in a continuous state and is The air passage 10 of the non-welding portion as in the first embodiment does not exist, and the air injection passages 2 to the buffer sheet portions 3A and 3B are formed at the both side positions of the welding portion 6.
[0012]
In the two embodiments described above, the volume of the space inside the cushioning material 12 is made in accordance with the size of the package 14.
[0013]
【The invention's effect】
As described above, according to the present invention, the two cushioning materials to be put on both ends of the package are made at the same time, and can be separated from each other at the time of use. The buffer material produced can be efficiently manufactured, and the cost can be greatly reduced.
[Brief description of the drawings]
FIG. 1 is a developed view of a cushioning material in Embodiment 1 of the present invention. FIG. 2 is a plan view showing a state in which the cushioning material is folded. FIG. 3 shows a state in which the two linked cushioning materials are filled with air. FIG. 4 is a perspective view showing a state in which the cushioning material is divided. FIG. 5 is a perspective view showing a state in which the separated cushioning material is placed on both sides of the package. FIG. Sectional drawing which shows the state which covered the cushioning material on the both sides of the to-be-packaged object. FIG. 7 is a developed view of the cushioning material in Embodiment 2 of the present invention.
DESCRIPTION OF SYMBOLS 1 Base | substrate 1a Outer peripheral part 1b Compartment welding part 2 Air injection path 2a Air injection port 3A, 3B Buffer sheet part 4 Sealing bag part 5 Check valve 6 Welding part 7 Perforated cut line 8 Tear notch part 9 Partial welding part 10 Air passage 11 Welded portion 12 Buffer material 13 Opening portion 14 Package

Claims (4)

Using a base body integrally provided with buffer sheet parts distributed to the left and right with the air injection path as a boundary while heating and welding the outer peripheral parts of the two sheet materials made of synthetic resin film, Is provided with a large number of elongated sealing bag portions divided by a welded portion provided at predetermined intervals in the length direction of the air injection path, and the sealing bag portions of the buffer sheet portions on both sides are sealed bag portions. The air is filled from the air inlet at one end of the air inlet passage formed at one end in the length direction of the air bag, and the sealed bag portions filled with air each independently maintain a sealed state. The cushion sheet portions on both sides are folded in a flat state by the partial welded portions for folding, and are formed as having a receiving portion with a space having a predetermined thickness, and the length direction of the sealed bag portion Parallel to the outside It closed by heat welding at the two sides of the parts, cushioning material, characterized in that along the air injection passage and adapted to be separated from each other. The cushioning material according to claim 1, wherein the cushioning sheet portion that is folded and connected to each other via an air injection path can be filled with air from a common air inlet. 2. The cushioning material according to claim 1, further comprising an air inlet for separately injecting air into both the cushioning sheet portions. A weld portion having an appropriate width is formed by welding two sheets of the synthetic resin film sheet of the base to each other at the center portion in the width direction of the air injection path, and a perforated cut is formed at the center portion in the width direction of the weld portion. The cushioning material according to claim 1, 2 or 3, wherein a line is formed.

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