JP2582444Y2 - Document bag - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document bag comprising a rectangular body having an opening at an upper end where a front wall sheet piece and a rear wall sheet piece are directly connected by a shape-retaining resin sheet.

[0002]

2. Description of the Related Art A document bag formed of a rectangular body having an opening at an upper end in which a front wall sheet piece and a rear wall sheet piece are directly connected to each other by a shape-retaining resin sheet is known without giving specific examples.

[0003]

[Problems to be solved by the invention]
Since there are no side or bottom wall sheet pieces, there is a limit in accommodating documents in the thickness direction.To make up for the limitation, prepare a separate document bag with side wall sheet pieces etc. Must.

The present invention has been devised by focusing on such disadvantages of the conventional example.

[0005]

According to the present invention, a front-wall sheet piece and a rear-wall sheet piece are formed by a shape-maintaining resin sheet from a square-shaped bag main body having an upper end opening directly continuous through a pair of side folds and a bottom fold. Forming a first fold on the pair of side edges of the bag main body, which is parallel to each side edge, and at equal intervals from each side edge and coincides with each other between the front and rear wall sheet pieces; The bottom edge of the main body is parallel to the bottom edge, and has the same width as the interval between one side edge and the first fold of the one side edge, and the second front and rear wall sheet pieces coincide with each other between the front and rear wall sheet pieces. A fold is formed, and a cut is formed on one side of the front wall sheet and a third fold is formed on a side of the rear wall sheet on a straight line connecting the intersection of the first fold and the second fold and the terminal of the bottom edge. Are formed, and the fourth fold perpendicular to the cut or the third fold is aligned with each other so that A structure formed on the sheet piece.

[0006]

The bottom corner of the bag is folded along the fourth fold in the direction from the back wall sheet piece to the front wall sheet piece to form a triangular portion composed of the fourth fold, side folds and bottom fold. Superimposed on the triangular portion composed of the fourth fold, the first fold and the second fold, and then press the fourth fold inward in the bag main body with a fingertip, and the first fold and While bending the second fold in the mountain direction and pressing the pair of triangular portions superimposed on each other in the inward direction of the bag main body along the cut or the third fold, the first wall on one side of the rear wall sheet is formed. The triangular portion consisting of the fold, the second fold and the fourth fold is released from the superposed state, and the surface of the bottom corner of the bag is folded along the third fold toward the inside of the bag. Due to being bent, a triangular portion composed of the first fold, the bottom fold and the third fold on one side of the rear wall sheet, the second fold and the side folds. Beauty triangular portion constituted by the third crease appear adjacent to each other. In this state, when the third fold that appears on the bottom corner surface is pressed with a fingertip, the triangular portion formed by the first fold, the second fold, and the fourth fold is divided into two by the presence of the cut. Dripping. And if you press further with your fingertips,
The cut is widened, and as a result, a triangular portion composed of the second fold, the cut and the third fold, and a triangular portion composed of the first fold, the cut and the third fold are formed in the bag main body. Appear so as to overlap each other to form a box-shaped bag.

[0007]

1 is a front view, FIG. 2 is an enlarged perspective view of a main part, FIG. 3 is an enlarged perspective view immediately after the start of a deformation operation, and FIG. FIG. 5 is an enlarged perspective view of the main part just before the completion of the deformation operation, FIG. 5 is an enlarged perspective view of the main part just before the completion of the deformation operation, and FIG.

In the drawing, reference numeral 1 denotes a bag main body made of a shape-retaining resin sheet, and the bag main body 1 is provided through a pair of side folds 2 and 2 forming side edges and a bottom fold 3 forming a bottom edge. The front wall sheet piece 4 and the rear wall sheet piece 5 are in the form of a rectangular body having an upper end opening directly continuous with each other.

Each of the pair of side folds 2 and 2 of the bag body 1 has a first fold 6 parallel to the side folds 2 and 2 and having an equal interval width a from each side fold 2. 6, and the second fold 7 is formed with the bottom fold having a width b equal to the distance a between the first fold 6 and the side fold 2 corresponding to the first fold 6. The first fold 6 and the second fold 7 are provided so as to coincide with the front wall sheet piece 4 and the rear wall sheet piece 5 (as a result, the bottom corner of the bag main body 1 is formed). A square having a side fold 2, a bottom fold 3, a first fold 6, and a second fold 7 appears at the corner.)

FIG. 8 shows a straight line connecting the intersection x of the first fold 6 and the second fold 7 and the intersection x ′ of the side fold 2 and the bottom fold 3 (that is, the bottom end of the bag body 1). Up front sheet piece 4
The rear wall sheet piece 5 is provided with a third fold 9 so as to coincide with the cut 8.

Reference numeral 10 is orthogonal to the cuts 8 to the third fold 9 (that is, the intersection y between the side fold 2 and the second fold 7 and the intersection y between the bottom fold 3 and the first fold 6). ′ On a straight line)
In the provided fourth fold, the fourth fold 10 is formed so as to be aligned with the front and rear wall sheet pieces 4, 5 similarly to the first and second folds 6, 7.

Thus, the bottom corner of the bag body 1 is folded along the fourth fold 10 from the rear wall sheet piece 5 to the front wall sheet piece 4 to form the fourth fold 10, the side folds 2 and the bottom. The triangular portion T1 composed of the fold 3 is divided into a fourth fold 10 and a first fold 6
And the triangular portion T2 constituted by the second fold 7 (FIG. 3), and then presses the fourth fold 10 inward of the bag main body with a fingertip, When the pair of triangular portions T1 and T2 superimposed on each other are pressed inward in the bag main body 1 along the cuts 8 to the third fold 9 while bending the fold 7 in the mountain direction, the rear wall is formed. Sheet piece 5
The triangular portion T2 composed of the first fold 6, the second fold 7, and the fourth fold 10 on the side is released from the superposed state, and the bag main body 1
The first fold 6 on the rear wall sheet piece 5 side
And a triangular portion T3 including a bottom fold 3 and a third fold 9
And a triangular portion T4 composed of the second fold 7, the side fold 2 and the third fold 9 appears adjacent to each other (FIG. 4). In this state, when the third fold 9 appearing on the bottom corner surface is pressed with a fingertip, the triangular portion formed by the first fold 6, the second fold 7, and the fourth fold 10 Divided by existence. Then, when further pressed by a fingertip, the cut 8 expands, and a triangular portion composed of the second fold 7, the cut 8 and the third fold 9, the first fold 6 and the cut The triangular portions composed of 8 and the third fold 9 appear so as to overlap each other (FIG. 5), and a box-shaped bag is formed (FIG. 6).

A fifth fold parallel to the fourth fold 10 in the direction of the second fold from the intersection x of the first fold 6 and the second fold 7 is provided on the front and rear wall sheet pieces 4 and 5. When the sixth fold 11 is formed and is folded along the sixth fold 11 and the side folds 2 and the bottom fold 3 as shown in FIG. 7, the box-shaped bag can be folded. .

[0014]

According to the present invention, it is possible to provide a document bag which can be easily deformed into a box having the above-described configuration.

[Brief description of the drawings]

FIG. 1 is a front view.

FIG. 2 is an enlarged perspective view of a main part.

FIG. 3 is an enlarged perspective view of a main part immediately after a deformation operation is started.

FIG. 4 is an enlarged perspective view of a main part during a deformation operation.

FIG. 5 is an enlarged perspective view of a main part immediately after completion of a deformation operation.

FIG. 6 is an enlarged perspective view of a main part when a deformation operation is completed.

FIG. 7 is an enlarged perspective view of a main part during folding after deformation.

[Explanation of symbols]

 1 Bag main body 2 Side fold 3 Bottom fold 4 Front wall sheet piece 5 Rear wall sheet piece 6 First fold 7 Second fold 8 Cut 9 Third fold 10 Fourth fold

Claims (1)

(57) [Scope of request for utility model registration] 1. A front-wall sheet piece and a rear-wall sheet piece made of a shape-maintaining resin sheet are mainly formed of a square-shaped bag having an upper-end opening directly continuous through a pair of side folds and a bottom fold. On the pair of side edges of the main body, parallel to each side edge, and at equal intervals from each side edge, form first folds that match each other between the front and rear wall sheet pieces, respectively, and form the bottom rim side of the bag main body. Forming a second fold that is parallel to the bottom edge and has the same width as the interval width between one side edge and the first fold on the one side edge side, and matches between the front and rear wall sheet pieces. A cut is formed on one side of the front wall sheet, and a third fold is formed on one side of the rear wall sheet, on a straight line connecting the intersection of the first fold and the second fold and the terminal of the bottom edge. At the same time, the fourth fold perpendicular to the cut or the third fold is aligned with each other and formed on the front and rear wall sheet pieces A paper bag.