JP2001199456A - Flexible bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve pourability of a bag. SOLUTION: A projection line 21 forming a projection outward from the bag 10 is provided on a line which passes through a pour-out port forming part 13 on a barrel sheet 11 of the bag 10. Recessed lines 22, 23 are provided on both sides of the projection line 21 on the barrel sheet 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a flexible bag.

[0002]

2. Description of the Related Art As described in Japanese Patent Application Laid-Open No. H11-245955, in a flexible bag, an externally folded crease for improving the opening property of a spout is provided at the same position on the front and back trunk portion sheets of the bag. Some are provided so as to overlap.

[0003]

The torso sheet of the bag is merely provided with an outwardly folded pressing rule, and the torso sheet is caused by the gravity of the contents acting on the torso sheet when the bag is opened. The cross section of the chevron having the crease at the top is a gently curved shape that continues to the joints on both sides of the bag. In other words, the height of the peak of the above-mentioned chevron cross section formed on the body sheet of the bag by the pressing rule, in other words, the depth of the pouring passage connected to the spout of the bag cannot be increased, and the spout has a sufficient opening degree. It is easy to close because it cannot be secured. Therefore, the pourability of the bag cannot be sufficiently improved, and when refilling another bottle, the width of the spout portion of the bag becomes larger than the diameter of the bottle. It becomes easy and it takes a long time to refill the refill container.

An object of the present invention is to improve the pourability of a bag.

[0005]

According to the first aspect of the present invention, a convex line is formed which is convex toward the outside of the bag on a line passing through the spout forming portion of the body sheet of the bag. Concave lines are provided on both sides of the convex lines in the trunk portion sheet.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 3, a flexible self-standing bag 10 has an upper edge and side edges joined to each other by heat fusion or the like. Edge joint 11A,
The side edge joints 11B, 11B are formed, and a bottom sheet 12 (not shown) is provided at the lower edge of both body sheets 11, 11.
Are joined by heat fusion or the like to form a bottom edge joint 11C. In addition, the bag 10 has an upper edge joint 11
The central portion of A is a projecting spout forming portion 13.
In the case of the bag 10, the trunk sheet 11 and the bottom sheet 1
In the above-mentioned joining process of No. 2, the contents are filled.

[0007] The bag 10 is composed of the body sheet 1 on the front and the back.
One convex line 21 and two concave lines 22 and 23 are provided at each of the same positions 1 and 11 overlapping each other. The convex line 21 is formed by the spout forming portion 13 in the body sheet 11.
On the line passing through the center of the bag 10, it is provided by press molding or the like so as to project toward the outside of the bag 10. Biconcave line 2
The reference numerals 2 and 23 are provided on both sides of the convex line 21 of the trunk sheet 11 by press molding or the like so as to be concave toward the outside of the bag 10.

Therefore, when the bag 10 is used, the spout forming portion 13 is cut and opened to form a small-diameter sharp spout 13A, the side surface of the bag 10 is supported by hand, and the spout 13A is connected to another refill container. Pour out the contents by aligning or inserting with the mouth of. At this time, the body sheet 11 of the bag 10 pushes the convex line 21 between the biconcave lines 22 and 23 outward by the gravity of the contents, and expands the pouring passage 13B connected to the pouring opening 13A ( (Fig. 3).

According to this embodiment, the following operations are provided. (Effects Corresponding to Claim 1) A convex line 21 and a convex line 21 are formed on the body sheet 11 of the bag 10.
2, the convex lines 21 of the body sheet 11 generated by the gravity of the contents acting on the body sheet 11 when the bag 10 is opened as shown in FIG.
Is a chevron-shaped cross section having a peak as
It rises sharply in the range of 23 (FIG. 3 (B)). That is,
The height of the peak of the above-mentioned chevron cross section formed by the convex line 21 on the body sheet 11 of the bag 10, in other words, the spout 13 of the bag 10
The depth of the pouring passage 13B connected to A can be increased, and it is difficult to close the pouring opening 13A, and a sufficient opening degree can be secured. Therefore, the pourability of the bag 10 can be improved, and even for high-viscosity contents, the spout 13A becomes smaller than the diameter of the container to be refilled. Refill time for containers can be reduced.

[0010] The above-mentioned convex line 21 and concave lines 22 and 23 are provided on both of the body sheets 11 and 11 of the bag 10 facing each other. The depth of the pouring passage 13B formed between the and the convex line 21 can be increased, and a sufficient opening degree can be secured by the pouring port 13A (FIG. 3B).

Since the spout forming portion 13 is made to project by the seal pattern of the upper edge joint portion 11A, the spout 1 is formed.
By making the 3A small-pointed, the insertability (refillability) into another container can be improved.

When the contents of the bag 10 are made of high viscosity (500 to 50,000 mPa · s) such as shampoo and rinse,
The pourability can be significantly improved.

The convex line of the present invention and the concave lines on both sides may be provided on at least one of the opposite body sheets of the bag.

[0014]

As described above, according to the present invention, the pourability of a bag can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a bag.

FIG. 2 is a perspective view showing an opened state of a bag.

FIG. 3 is a schematic diagram showing a deformed state of a body sheet of a bag.

[Description of Signs] 10 bags 11 Body sheet 13 Spout forming part 21 Convex line 22, 23 Concave line

Claims (2)

[Claims] 1. A convex line protruding toward the outside of the bag is provided on a line passing through a spout forming portion in a body sheet of the bag,
A flexible bag in which concave lines are provided on both sides of the convex line in the trunk sheet. 2. The flexible bag according to claim 1, wherein the convex line and the concave line are provided on both of the body sheets facing the bag.