JP3234908U - Packaging bag with cushioning material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag body with a cushioning material having a gusset, which is useful for storing a stored item such as a thick cracked object and can be manufactured at low cost. SOLUTION: In a packaging bag with a cushioning material in which a cushioning material 4 is formed inside, the cushioning material 4 is provided at a first bending line 6 substantially in the center of a sheet having a rectangular shape and having the cushioning material 4 on one side. The surface is folded 180 ° outward, and the surface having the cushioning material 4 is inside the second folding line 7 separated from the first bending line 6 of both sheet pieces 5a and 5b divided by the first bending line 6. It is folded back 180 °, and the sides perpendicular to the bending lines 6 and 7 of both sheet pieces 5a and 5b are joined at the joint portion, and a concave portion folded inward is formed on the opposite side of the opening of the bag body. [Selection diagram] Fig. 3

Description

The present invention relates to a packaging bag for home delivery or mailing, and more particularly to a packaging bag that can protect the stored items from the outside during transportation or storage by having a cushioning material inside.

Conventionally, as a bag for packaging in home delivery or mailing, in order to protect stored items, it is composed of an outer bag made of paper or vinyl and an inner bag formed of a cushioning material in which a large number of synthetic resin bubbles are arranged. There are various packaging bags with a two-layer structure.

By the way, storage items that require cushioning materials include cracks, music such as CDs and DVDs, video discs, etc., but these items are three-dimensional or flat, but thick, and when multiple sheets are stacked. Some have a larger thickness.

The general structure of a packaging bag is to fold a rectangular sheet or paper in two, or stack two separate sheets and join the other sides except one to leave as an opening to form a bag. However, when the above-mentioned cracks and discs are stored in this, the bag body swells due to these stored items and becomes a distorted shape as a whole.

Specifically, the central part where the stored items are stored swells, and the joints on the sides of the surrounding sheets protrude, but in the case of thin stored items, it can be handled in the same way as an ordinary envelope as a whole. If you put a thick container, the part consisting of a flat joint will protrude from the inflated central part, and when you handle the packaging bag, the protruding part will hit your hand and you will be injured. In addition to the risk of bagging, the presence of protruding parts increases the area occupied by the bag with respect to the stored items, which takes up too much space during transportation and storage.

Therefore, as in Patent Document 1 and Patent Document 2, a packaging bag body having a gusset portion formed around it has been proposed on the premise of storing thick stored items.

Japanese Patent No. 6130657 Japanese Patent No. 6130671

By the way, the structure of a packaging bag with a gusset is complicated in order to obtain a gusseted portion, and the manufacturing cost is higher than that of a packaging bag with a gusset, which is a general structure in which the rectangular sheets or the like are overlapped and the periphery is joined. There was a problem that it became high.

Therefore, this invention solves the above-mentioned problems and provides a packaging bag with a gusset that can be manufactured at low cost in a packaging bag with a cushioning material that is useful for storing stored items such as thick cracks. The task is to do.

In order to solve the above problems, the present invention is for packaging with cushioning material, which is a rectangular flat plate-shaped bag body, has a structure in which one side is an opening and the other three sides are closed, and a cushioning material is formed inside. In the bag body, of a sheet body having a rectangular shape and having a cushioning material on one side, the surface having the cushioning material is folded outward by 180 ° at the first bending line at the substantially center, and both sheet pieces divided by the first bending line. The surface having the cushioning material is folded back 180 ° inward at the second bending line at a predetermined interval from the first bending line, and the sides perpendicular to the bending line of both sheet pieces are joined to each other, and the opposite sides of the opening of the bag body are joined. It is a packaging bag with cushioning material, which is characterized by having a structure in which recesses folded inward are formed.

As described above, according to the packaging bag body of the present invention, a cushioning material having a gusset portion is used by a simple manufacturing method such as bending and joining a predetermined portion of a normal sheet without increasing the product cost. A bag for packaging can be obtained.

In addition, in the state before storing the stored items, that is, when the product as a packaging bag is stored, transported, and sold, it has a flat plate shape with almost no normal thickness, so that it can be stacked. It does not take up space and is easy to handle.

It is a front view of the packaging bag body of this invention. In the plan view of the sheet constituting the packaging bag body of this invention, (A) is the front side and (B) is the back side provided with the cushioning material. It is a perspective view which shows the process of manufacturing the packaging bag body of this invention. It is an enlarged front view of the main part of the packaging bag body of this invention. It is a left side view which shows the expanded state of the gusset part of the packaging bag body of this invention. It is a perspective view which shows the enlarged state of the gusset part of the packaging bag body of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
What is shown in FIG. 1 is a packaging bag 1 as a finished product, and can be handled as a flat plate having almost no normal thickness during storage, transportation, and sale of the product.

The structure of the packaging bag 1 is such that one sheet 5 is folded and stacked, and both sides are welded by a welding portion 8 to form a bag 2, and the upper portion is not sealed to form an opening 3, and the packaging bag 1 is stacked. By projecting the upper end portion of the sheet 5 above the upper end portion of the other sheet 5, the sealing piece 10 for closing the opening 3 after storing the stored items is provided.

The material of the sheet 5 may be either paper or synthetic resin. In short, the material is not particularly limited as long as it is a flexible and sheet-like material, but an opaque material such as a so-called gray film is used when storing private items or from the viewpoint of security. Is also preferable.

Although not shown in FIG. 1, a cushioning material 4 described later is provided on the entire inner surface surface to protect the stored items from impact.

A recess 9 in which the sheet 2 is folded inward is formed on the opposite side of the opening 3 of the bag body 2, and this portion serves to form a gusset portion when a thick stored object is stored.

Next, the method for manufacturing the packaging bag body 1 of the present invention will be described with reference to FIGS. 2 and 3.
First, a sheet 5 having the same width in the short side direction and about twice the length in the long side direction of the finished product of the packaging bag body 1 shown in FIG. 1 is prepared.

The sheet 5 has a portion to be a sealing piece 10 at one end on the inner side (back surface), and a cushioning material 4 is provided integrally with the sheet 5 on the entire remaining surface. As the cushioning material 4, a known material such as a bubble wrap material which is made of vinyl and has a large number of air chambers sealed with air is generally used, but the cushioning material 4 is not limited to this and is formed into a sheet by a known cushioning material. If there is, it is not limited.

Next, at the substantially center of the sheet 5 (the central portion of the portion having the cushioning material 4 on the back surface), the surface (back surface) having the cushioning material 4 is outside at the first bending line 6 along the width direction of the sheet 5. The sheet 5 is folded back in a mountain fold shape.

Next, cushioning is performed by a second folding line 7 provided parallel to the first bending line 6 at a predetermined interval from the first folding line 6 of both sheet pieces 5a and 5b divided by the first folding line 6. The sheet 5 is folded back in a valley fold shape with the surface (back surface) having the material 4 inside.

By folding back the first bending line 6 and the second bending line 7 by 180 °, both sheet pieces 5a and 5b overlap each other and become perpendicular to the first bending line 6 and the second folding line 7 of both sheet pieces 5a and 5b. When both sides are joined at the joint portion 8, as shown in FIG. 1, the opening 3 is placed on the upper side of the bag body 2 and the opening portion 3 is placed on the lower side at the same depth as the distance between the first bending line and the second bending line. A packaging bag body 1 with a cushioning material having a folded recess 9 formed therein can be obtained.

In addition, the obtained packaging bag 1 with cushioning material also has a flat plate shape with almost no normal thickness during storage, transportation, and sales, so that it can be stacked and does not take up space. Easy to handle.

Next, in the packaging bag 1 with cushioning material of the present invention, cracks, music such as CDs and DVDs, three-dimensional objects such as video discs, and even flat plates that are thickened by storing a plurality of sheets are stored. The state will be described.

First, a wide storage object is stored in the opening 3, or a hand is put in advance before storage to separate the sheet piece 5a and the sheet piece 5b constituting the bag body 2 to expand the internal space.

At this time, even in the recess 9 shown in FIG. 4, the sheet pieces 5a and 5b on both sides are separated from each other. The 5b side is the second bending line 7b.

Further, in the sheet piece 5a and the sheet piece 5b constituting the recess 9, the lines that are bent with the expansion of the bag body 2 are described as bending lines 11a and 12a on the sheet piece 5a side and 11b and 12b on the sheet piece 5b side. do.

First, the first bending line 6 that was bent 180 ° in the recess 9 is eliminated by pulling the sheet pieces 5a and 5 apart, and as shown in FIGS. 5 and 6, the bending is eliminated and the sheet is formed. The pieces 5a and 5b are flush with each other, and the bottom surface appears.

At the same time, the bending lines 11a and 11b are formed by being bent 180 ° inside the side gusset portion at an angle of 45 °.

Further, the bending lines 12a and 12b are formed by being bent 90 ° to the side surface side of the bottom surface as shown in FIGS. 5 and 6.

The second bending lines 7a and 7b change from a 180 ° bent state to a 90 ° bent state to form front and rear sides of the bottom surface.

As described above, the thickness of the gusset portion is limited to twice the width of the originally formed recess (distance between the first bending line 6 and the second bending line 7), but the bag made of the sheet 5 is used. Since the body 2 has flexibility and flexibility, it allows some swelling, so that thick stored items of various dimensions can be easily stored with a margin.

Further, after storing the stored items, the sealing piece 10 on the sheet piece 5b side is folded back to the sheet piece 5a side and sealed, so that the opening 3 is sealed and the stored items are sealed in the bag body 2. At this time, although not shown, an adhesive layer or an adhesive layer is formed in advance on the side of the sealing piece 10 overlapping the sheet piece 5a, and usually, a release tape is attached on the adhesive layer or the adhesive layer. A known sealing method such as fixing the sealing piece 10 to the sheet piece 5a by an adhesive layer or an adhesive layer that appears after peeling off the release tape when sealing the opening 3 can be used.

Further, after the stored object is sealed, the welded joint portion 8 only slightly protrudes from the side surface on which the gusset is formed, and the hand is injured during handling like the welded portion protruding in the flat bag. There is less risk.

The manufacturing process and usage status of the packaging bag 1 with cushioning material of the present invention are as described above, and a sheet having one side integrated with the cushioning material is bent along a predetermined bending line and joined by welding or the like. Since it can be obtained by such a simple process, the manufacturing cost does not increase, and the gusset portion is easily formed when storing the stored items, and the thick stored items can be wrapped with cushioning material and stored.

The packaging bag with cushioning material of the present invention is not limited to the one shown in the embodiments and drawings, and the design can be appropriately modified and implemented within the scope of the purpose of the present invention.

1 Packaging bag 2 Bag 3 Opening 4 Cushioning material 5 Sheet 5a, 5b Sheet piece 6 First folding line 7 Second folding line 8 Joint 9 Recess 10 Sealing piece 11a, 11b, 12a, 12b Bending line

Claims (1)

In a packaging bag with cushioning material, which is a rectangular flat plate-shaped bag with an opening on one side and closed on the other three sides, with a cushioning material formed inside.
A rectangular sheet body having a cushioning material on one side, the surface having the cushioning material is folded outward by 180 ° at the first bending line at the substantially center, and the first bending line of both sheet pieces divided by the first bending line. Fold the surface with the cushioning material inward by 180 ° at the second folding line with a predetermined interval from the beginning, join the sides perpendicular to the bending line of both sheet pieces, and fold inward to the opposite side of the opening of the bag body. A packaging bag with cushioning material, which is characterized by having a structure in which a concave portion is formed.

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