JP2000128192A - bag - Google Patents

Abstract

(57) [Problem] To provide a bag in which a spout can be easily deformed and a content can be poured out in a stable direction without causing blockage. SOLUTION: In a self-standing bag 10 having a pair of superposed side wall films 11 and a bottom wall film 12 sealed and having a spout 14 formed to project from a peripheral portion,
Each side wall film 11 at the spout 14 has a spout 1
In the protruding direction of 4, reinforcing lines 17, 18 each having a convex cross section are formed so as to be shifted to different sides with respect to each center line XX and extend respectively. The reinforcing lines 17 and 18 are formed in a curved shape that curves to different sides with respect to each center line, and intersect with the longitudinal center line Z-Z of each side wall film 11 and extend at least to the central portion thereof. ing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a bag having an improved spout.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 7-2260 discloses a linear spout formed by deforming a film on a spout in order to prevent the spout from being blocked when a liquid is poured. It is described that a deformation mechanism is provided.

[0003] In the above-mentioned reinforcing mechanism, since two reinforcing mechanisms are respectively arranged on the two films constituting the self-standing bag symmetrically at the same position facing each other, that is, symmetrically, they are easily closed. In some cases, the contents cannot be poured out stably.

[0004] The present invention provides a bag that can be easily deformed for a spout and that can discharge contents in a stable direction without causing blockage.

[0005]

According to the present invention, there is provided a bag in which two side wall films are superimposed, wherein each side wall film has
The object has been achieved by providing a bag in which a reinforcing portion is formed asymmetrically in the pouring direction.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a self-standing bag 10 according to a preferred embodiment of the present invention comprises a pair of side wall films 11 and a bottom wall film 12 made of a flexible film material such as polyethylene. The edge portion is sealed and integrated into a bag shape to form an accommodating portion 16 for accommodating a liquid. A spout piece 13 projecting obliquely upward from the edge is provided at the upper end corner of the self-standing bag 10. When the tip of the spout piece 13 is cut along the line AA, the tip is opened. A spout 14 is formed to project.

The pair of side wall films 11 at the spout 14 sandwich each center line XX in the direction in which the spout 14 protrudes, and one (the front side in FIG. 1) side wall film 11 has the center line X-X. A first reinforcing wire 17 having a convex cross-section and extending while bending while being shifted obliquely upward from X is the other (the back side in FIG. 1).
Each of the side wall films 11 is formed with a second folding reinforcing line 18 having a convex cross section and extending while curving while being shifted obliquely downward from the center line XX.

The first reinforcing line 17 is curved in a curved shape projecting obliquely upward, and extends along the longitudinal center line Z- of the side wall film 11.
Extend further beyond Z.

After the second reinforcing line 18 is curved in a curved shape that is obliquely downwardly convex, the second reinforcing line 18 is obliquely upwardly convex with a position intersecting with the longitudinal center line ZZ of the side wall film 11 as an inflection point. An S-shaped curve is drawn while being further extended while being curved in the shape of a curved line, and the terminal portion thereof is located near the side edge portion at substantially the center portion of the body surface of the self-standing bag 10.

The first reinforcing line 17 and the second reinforcing line 18 intersect near the vertical center line ZZ.

Each of the first reinforcing wire 17 and the second reinforcing wire 18 having a convex cross section is formed by pressing the side wall film 11 in a groove of a mold using, for example, a heated male and female mold, or by heat sealing. Thereby, as a linear reinforcing mechanism having a cross section that is outwardly convex, these can be easily formed without having to dispose them symmetrically. The reinforcing wires 17 and 18 may be formed by forming a ridge having a semicircular cross section along the sidewall film 11 by, for example, pressure molding.

According to this embodiment, as shown in FIG.
The spout 1 is formed by the first reinforcing line 17 and the second reinforcing line 18 which are arranged asymmetrically on both sides of the center line XX with the seal center line YY of the side wall film 11 as a symmetric axis.
Since the opening 4 is expanded while changing the direction of the force applied to the front and back side wall films 11, the opening of the spout 14 at the time of pouring is promoted, and the blocking of the spout 14 is effectively prevented. Moreover, the first reinforcing line 17 and the second reinforcing line 1 that are asymmetrical
By virtue of 8, a twisted virtual introduction path is formed in the spout 14, and the contents flow out in a twisted state, so that a stable outflow direction is maintained and the pourability is improved.

Further, according to the present embodiment, the first reinforcing line 17 and the second reinforcing line 18 in the spout 14 are formed in a curved shape curved to different sides with respect to the respective center lines XX. As a result, the content flows out in a spiral shape, and the pourability and the stability of the flowing direction are further improved.

Further, according to the present embodiment, the first reinforcing line 17 and the second reinforcing line 18 extend beyond the longitudinal center line ZZ of each side wall film 11 and substantially at the center of the body surface of the self-standing bag 10. Since it extends to the portion, the force of pushing the trunk by the weight of the contents is applied to these reinforcing wires 17,
It is guided to the spout 14 via 18 and converted into a force to open the opening of the spout 14, thereby further effectively preventing the closure of the spout 14 and improving the pourability.

Further, each of the reinforcing wires 17 and 18 is
By extending to the substantially central portion of the torso surface, the rigidity of the bag can be increased, the gripping property when holding it in the hand can be improved, and the independence can be improved. In addition, the appearance of the self-standing bag 10 can be improved by improving the appearance, and also plays a role of an accent line of the spout 14 and a holding guide.

The present invention can be variously modified. For example, the first reinforcement line 17 and the second reinforcement line 18 may be straight lines or a combination of straight lines, may be on the same side of each center line XX, and may be the same side or the opposite side in the bending or bending direction. In addition, the first reinforcing line 17 and the second reinforcing line 18 need only be provided at least in the spout 14, and need not necessarily be extended to the central portion of the trunk. Further, the spout 14 does not necessarily need to protrude obliquely upward, and may protrude upward at the center of the upper line, or may not protrude.

[0017]

According to the bag of the present invention, the spout can be easily deformed, and the contents can be stably poured out without clogging.

[Brief description of the drawings]

FIG. 1 is a front view showing a self-standing bag according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 showing an opening state of a spout;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Self-standing bag 11 Side wall film 12 Bottom wall film 13 Spout piece 14 Spout 16 Housing part 17 1st reinforcement line 18 2nd reinforcement line XX Center line in the projecting direction of the spout YY Seal center line ZZ Vertical center line of sidewall film

Claims (4)

[Claims] 1. A bag in which two side wall films are overlapped, wherein each side wall film has a reinforcing portion formed asymmetrically in a pouring direction. 2. The bag according to claim 1, wherein the asymmetrical reinforcing portion is formed in the side wall film so as to be curved in a pouring direction. 3. The bag according to claim 1, wherein the reinforcing portions formed on the two side wall films cross each other. 4. The bag according to claim 1, wherein the reinforcing portion intersects a longitudinal center line of each of the side wall films and extends at least to a central portion thereof.