JPH1095439A - Standing pouch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the stability, and to improve the appearance by symmetrically cutting a part of a film on each side from a bottom side to a mouth side, and side-sealing a face film and a back film along the cut line. SOLUTION: A rectangular face film 1 and a rectangular back film 2 are provided, and a bottom film 3 is inserted in a lower part of these two films in an inversely V-shaped folded manner. Each side of the face film 1 and the back film 2 is cut inside in a range where a label area 5 is left from a bottom part to an upper part. Cuts 4, 4a are straight so that each side is gradually narrower from the bottom side to the label area 5, and an upper end of the gradually narrower cuts is then gradually larger in width, and leading to the width on each side of the label area 5. The quantity of the cut is ideally the quantity corresponding to the width where the bag is expanded and each side is attracted to the center. A heat seal 6 of the prescribed width is provided along a contour in a part except a mouth side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method of inserting a bottom film into a bottom of a front film and a back film by folding the bottom film into an inverted V-shape and heat-sealing the front film, the back film and the bottom film along their respective peripheral edges. The so-called standing pouch (self-standing bag), which is stable when the contents are filled and the bottom is expanded back and forth by performing
Specifically, it is characterized by improving the stability when becoming independent and enhancing the aesthetics when becoming independent.

[0002]

2. Description of the Related Art FIG. 10 shows a conventional standing pouch. Reference numeral 20 denotes a front film, reference numeral 21 denotes a back film, reference numeral 22 denotes a bottom film, reference numeral 23 denotes a heat sealing portion.
1 is open and the bottom expands in a boat shape, thereby becoming self-supporting as shown in the figure. In the figure, 24 is a mouth seal and 25 is a zipper.

[0003]

However, in the conventional standing pouch, when it is self-standing, its front shape is narrower than the width of the mouth seal 24 side because the bottom side is expanded back and forth. It becomes an inverted trapezoid. For this reason, there is a drawback that stability is poor when the robot is self-supporting, and that the overall balance is so-called “head” and the appearance is poor. An object of the present invention is to improve the stability and appearance of a standing pouch.

[0004]

Means for Solving the Problems In order to achieve the above object, the present inventors have made intensive studies and found that cutting both sides of a bag can improve stability and appearance. The configuration is as follows. 1. At the bottom of the square front and back films,
The bottom film is folded in an inverted V shape and inserted. The front film, the back film, and the bottom film are heat-sealed at their respective edges except for the mouth, and when the contents are filled, the bottom portion moves forward and backward. In a standing pouch that expands into a stable and self-supporting form, it cuts part of both sides from the bottom side to the mouth side symmetrically and side seals the front film and back film along this cut line Standing pouch with a different configuration. 2. 2. The standing pouch according to the above item 1, wherein a zipper is inserted in a mouth side.

[0005]

When the contents are put in the bag and the mouth or zipper is closed, the bottom of the bag expands due to the weight of the contents, so that the bag assumes a substantially boat shape. On the other hand, since the mouth side is closed,
will not open. When viewed from the side, the bag has a substantially conical shape. On the other hand, on the front side of the bag, the width of both sides is drawn closer to the center by the expansion of the bottom side. As a result, the width of the bottom side of the bag and the width from the bottom to the mouth side become substantially the same due to the cutting action, and the bag viewed from the front side becomes square. On the other hand, since the mouth side of the bag above the cut is flatly sealed, it has the same flat width as before filling the contents.

[0006] Since the shape of the bag filled with the contents changes as described above, the bag does not have an inverted trapezoidal shape and is stable when it becomes independent. In addition, since the mouth side is flat and the original width, when the product is placed on the product shelf by label printing or sticking or attaching a label here, the label surface is emphasized, and thus the display effect is improved. Can be enhanced.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A bag for self-supporting consists of a square front film and a back film, and a bottom film folded and inserted in an inverted V-shape at the lower part of the two films. And both sides of the backing film are cut inward to the extent that the label surface remains from the bottom to the top.
This cut is made in a straight line so that both sides gradually become narrower from the bottom toward the label surface. The upper end (both sides) of this gradually narrowed cut is then gradually expanded to the label surface. To the width of both sides. Ideally, the amount of cut should be equal to the width of the bag expanding and both sides brought to the center, but since the amount of expansion is not fixed by the content and this amount, Although it is a dimension, it may be accurately calculated by calculation depending on an object.

The bag having the above-mentioned shape is heat-sealed at a constant width along the contour except for the mouth side. This heat sealing is the same as a known standing pouch sealing method. A zipper is attached to the mouth of the bag, and after filling the contents, the mouth is closed, and the zipper is sealed by mouth sealing. Opening means such as a notch or tear tape may be inserted between the mouth seal and the zipper for opening. The material of the bag is a material having heat sealing properties at the mating surface of the front and back films and the mating surface of the bottom film and the front and back films, such as polyethylene. A film can be used.

[0009]

Embodiment 1 This embodiment is shown in FIGS. This figure 1
4, 1 is a front film, 2 is a back film, 3
Is a bottom film inserted in a lower V-shape below the front film 1 and the back film 2. 4,4a in Table film 1 and the back film 2, in a range excluding a height of H ₂ bottom film 3 having a high is inserted is H ₁ and the mouth-side label side 5, both towards the label surface 5 side The side portion is gradually narrowed, is close to the label surface 5, has a minimum width W, and is a cut portion (hatched portion) cut so as to gradually expand toward both sides of the label surface 5. 6 is a heat seal part.

Reference numeral 7 denotes a zipper inserted inside the label surface 5, and reference numeral 8 denotes a mouth seal portion, which is not yet sealed in the drawing. FIG. 4 shows a shape when the bag is filled with the contents, sealed, and made independent. In this manner, the bottom of the bag has the bottom film 3 expanded to form a boat shape, the label surface 5 is flat and expands toward the bottom, and the shape as viewed from the side becomes a conical shape. On the other hand, as seen from the front, as shown in FIG. 5, the width of both sides of the bag below the label surface 5 is substantially the same, and the width of both sides of the label surface 5 is the same width as the beginning. In FIG. 1, reference numeral 9 denotes an opening notch.

[0011]

Embodiment 2 FIGS. 6 to 8 show another embodiment. This embodiment is a bag in which both corners 10 and 10a are cut at a portion where the bottom film 3 is inserted, and heat sealing 6 is performed along the cuts 10 and 10a. Although so-called ears remain at the bottom of the bag, the ears do not remain when both corners are cut 10, 10a as in this embodiment.

FIG. 9 is an explanatory view of a bag in which contents are filled in a bag whose both corners have been cut 10 and 10a, as viewed from the front. The above-described standing pouch can be produced by simply adding a cutting device in-line to a conventional standing pouch bag making machine. In the present invention, the contour from the minimum width W of the cuts 4 and 4a to the label surface 5 may be curved instead of a straight line.

[0013]

As described above, the present invention has the following effects by providing cuts on both sides in the standing pouch. When the contents are filled in the bag a and the bag is made independent, the shape seen from the front presents a square shape. As a result, the balance is better and more stable than in the conventional example having an inverted trapezoidal shape. b. The label surface is emphasized as compared to the main body portion in which the contents enter. As a result, there is a label effect (display effect). c. When filling the contents, the upper part of the bag is narrowed by cutting, so the play of the contents, that is, the crispness disappears, and the rate of powdering for some dried products such as potato chips decreases compared to the past. I do.

[Brief description of the drawings]

FIG. 1 is a front view of a standing pouch according to a first embodiment.

FIG. 2 is a sectional view taken along line AA ′.

FIG. 3 is an enlarged sectional view of a mouth and a bottom.

FIG. 4 is a perspective view of a state in which the content is filled in a pouch according to the first embodiment and the content is self-standing.

FIG. 5 is a front view of the pouch according to the first embodiment in a state in which contents are filled into the pouch and the pouch is self-standing.

FIG. 6 is a front view of a standing pouch according to a second embodiment.

FIG. 7 is a sectional view taken along line BB ′.

FIG. 8 is a perspective view of a state in which a content is filled in a pouch according to a second embodiment to make the pouch self-standing.

FIG. 9 is a front view of the bag according to the second embodiment in a state where the bag is filled with contents and is self-standing.

FIG. 10 is an explanatory view of a conventional standing pouch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front film 2 Back film 3 Bottom film 4, 4a cut 5 Label side 6 Heat seal part 7 Zipper 8 Port seal part 9 Notch 10, 10a cut

Claims (2)

[Claims] 1. A bottom film is folded into an inverted V-shape and inserted into the bottom portions of a front film and a back film made of a square,
The front film, the back film, and the bottom film are heat-sealed at their respective edges except for a mouth portion, and when the contents are filled, the bottom portion expands back and forth to be stable, and a standing pouch in a form capable of standing independently. , A standing pouch in which a part of both sides from the bottom side to the mouth side is symmetrically cut, and the front film and the back film are side-sealed along the cut line. 2. A zipper is inserted in a mouth side.
The standing pouch described.