JPH08175551A - Paper bag - Google Patents

Abstract

PURPOSE: To form pockets simultaneously with a bag main body on bending a sheet material for forming the bag without preparing the pockets separately by a method wherein bending pieces for forming the pockets are connected to the bottom. CONSTITUTION: Bending pieces 4 for forming side walls 20 are connected to positions outside a pair of side edges 2 and 2 serving as creases for inside bending on the bottom 1, and a front wall 5, a rear wall 6, and side walls 7 for a paper bag are formed with bending made on the creases 2 and 9 for inside bending, and case-like side walls 20 are made with each of overlap widths 8 stuck to a side edge on each of corresponding bending pieces 4. Then, bending pieces 11, connected to the bottom 11 with another pair of side edges 3 and 3 serving as creases for inside bending, are bent respectively toward the front wall 5 and the rear wall 6. The side edges of the bending pieces 11 are bent at creases 12 for inside bending and creases for outside bending provided at the right and the left of each of the bending pieces 11, and overlap widths 14 on the lower part and side edges of the bending pieces 11 are stuck respectively to the front wall 5 and the rear wall 6 to form pockets 15, and thereby a paper bag 10 is completed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper bag provided with pockets on a cylindrical side wall provided along the periphery of a bottom wall, and it is an ordinary packaging bag, a paper bag with a handbag, a paper bag with a lid, and a document holder. Used as a bag, etc.

[0002] As a paper bag of this type
The one disclosed in Japanese Patent No. 43 is publicly known. This paper bag has a structure in which a slit is formed in the side wall and a pocket is attached to the back surface of the side wall. However, in this paper bag, the pocket has to be formed separately, and moreover, it has to be attached to the back surface in accordance with the position of the slit formed in the side wall, which requires a lot of man-hours to form the paper bag and is small. Even if there is, there is a disadvantage that the production cannot be mechanized.

[0003]

Technical Problem The present invention relates to a paper bag 10 having a pocket 15 on a cylindrical side wall 20 provided along the periphery of a bottom wall 1 and utilizing a bent piece connected to the bottom wall 1 for the pocket 1.
It is an object to be able to form No. 5.

[0004]

[Technical Means] Technical means for solving this technical problem are as follows: (a) A tubular side wall 20 is formed by a bending piece 4 connected to another peripheral edge of the bottom wall 1 excluding at least one peripheral edge. (B) The two side edges of the folded piece 11 connected to the remaining peripheral edge are formed on the inner surface or the outer surface of the side wall 20 to form a pocket. The second technical means is (c) forming one or more parallel valley fold lines 21 and mountain fold lines 22 on the bottom wall 1.

[0005]

Operation of the technical means Since the cylindrical side wall 20 provided along the peripheral edge of the bottom wall 1 is formed by the bent piece 4 which is connected to the other peripheral edge portion except at least one peripheral edge portion of the bottom wall 1. The folding piece 11 connected to one peripheral edge is independent of the side wall 20. The pocket 15 can be formed integrally with the side wall 20 by folding back the folded piece 11 toward the side wall and adhering both side edges to the inner surface or the outer surface of the side wall. When the pocket 15 is provided on the outer side of the side wall 20, the folded piece 11 may be folded back from the outer side of the side wall 20 and adhered. When it is provided on the inner side, the folded piece 11 may be first folded and then the side wall 20 may be formed. Both will be bonded.

One or more parallel valley fold lines 2 are formed on the bottom wall 1.
By forming 1 and the mountain fold line 22, the bottom wall 1 of the paper bag 10 with the pocket 15 can be folded into a bellows shape.

[0007]

EFFECTS OF THE INVENTION Since the pockets can be formed by utilizing the bent pieces connected to the bottom wall, the pockets can be formed simultaneously with the main body of the paper bag simply by folding the material sheet of the paper bag without preparing the pocket separately. There is an advantage that can be.
In addition, since the folded piece connected to at least one side edge of the bottom wall can be freely used to form the pocket, there is an advantage that the shape of the pocket can be freely designed, and the form of the paper bag can be diversified. .

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 is a development view of a paper bag 10 having a rectangular bottom wall. Of the two sets of side edges facing each other on the bottom wall 1, one set of side edges 2 and 2 is used as a valley fold line, and the bent pieces 4 and 4 for forming the side wall 20 are connected to the outside thereof, and the valleys shown by dotted lines are connected. The paper bag is bent along the folding lines 2 and 9 to form the front surface 5, the back surface 6 and the left and right side surfaces 7, and the glue margin 8 is adhered to the corresponding side edge portion of the other bending piece 4 to form the tubular side wall 20. To do. In this case, if a valley fold line is formed in the center of the left and right side walls 7, 7 and the bottom wall 1 as shown by the three-dot chain line in the drawing, the workability of forming the side wall 20 by folding the bending piece 4 is improved. It will be extremely good.

Next, the folded piece 11 which is connected by using the other side edges 3 and 3 of the bottom wall 1 as valley fold lines is bent toward the front wall 5 and the rear wall 6 side, and the valleys formed on the left and right side edges of the folded piece 11 are formed. The side edges are bent along the fold lines 12 and the mountain fold lines 13, and the glue margins 14 on the lower and side edges of the folded piece 11 are adhered to the front wall 5 and the back wall 6 to form pockets 15 and shown in FIG. The completed paper bag is completed.

Although this embodiment shows an example of a paper bag having a rectangular bottom wall, a pocket-shaped paper bag can be formed regardless of the shape of the bottom wall as long as it has a polygonal shape. Further, in the embodiment, the bent piece for forming the side wall is connected from the two side edges of the bottom wall, but the bent piece may be connected to only one side edge or three side edges. . In the former case, three pockets are formed,
In the latter paper bag, one pocket can be formed.

In FIG. 2, a paper bag 10 with a handle in which holes 17 are formed in the front wall 5 and the back wall 6 and the cords 16 are inserted therethrough.
However, it is possible to design an appropriate form such as a paper bag without a handle or a paper bag with a folding lid in which a part of the side wall is formed long. In the paper bag 10 of FIGS. 1 and 2, the lower portions of the left and right side edges of the folding pieces 11, 11 are cut out to form pockets 15 having a width smaller than the width of the front wall 5. 1 pocket without cutout
The entire width of 5 may be the same as that of the front wall 5, and a margin may be provided on the outside thereof (see FIG. 3).

FIG. 4 shows a bending piece 4 for forming side walls on a pair of opposite side edges of the bottom wall 1 as in the above embodiment.
4 is a folded piece 11 for pocket formation on the other side edge,
11 are connected to each other, and a paper bag is formed with the dotted line as a valley fold line. On the left and right side surfaces 7, 7 of the bottom wall 1 and the paper bag linearly connected to the bottom wall 1, as shown in the figure, the valley fold line 21 indicated by a chain line and the mountain fold line indicated by a solid line are shown. Since 22 and 22 are provided in parallel, the side surface 7 and the bottom wall 1 of the paper bag can be bent into a bellows shape. The valley fold line 21 and the mountain fold line 22 are provided in combination as shown in FIG. 4, or any one of them may be provided independently.

[Brief description of drawings]

[Figure 1] Development view of a paper bag

FIG. 2 is a perspective view of a paper bag.

FIG. 3 is a perspective view of a paper bag according to another embodiment.

FIG. 4 is a development view of a paper bag according to another embodiment.

[Explanation of symbols]

1 bottom wall, 4 folding piece, 5 front wall, 6 back wall, 7 side wall, 10 paper bag, 11 folding piece, 15 pocket,

Claims (2)

[Claims] 1. A paper bag in which a pocket is provided in a tubular side wall provided along the peripheral edge of a bottom wall, wherein the tubular side wall is a bent piece connected to other peripheral edge portions except at least one peripheral edge portion of the bottom wall. A paper bag in which a pocket is formed by adhering both side edge portions of the folded piece connected to the remaining peripheral portion to the inner surface or the outer surface of the side wall by forming a pocket with the bottom wall. 2. One or more parallel valley fold lines on the bottom wall,
The paper bag according to claim 1, wherein a mountain fold line is formed.