JPH10258822A - Plastic bottle container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve lateral compressive strength of a shoulder of a container to prevent troubles such as the shoulder being recessed under a reduced pressure by peripherally providing a groove rib between a ridge of the shoulder and a plurality of elongated protruding panels formed on a body below the ridge. SOLUTION: A cylindrical container 1 comprising a mouth 1-1, a shoulder 1-2 and a body 1-3 is formed with a neck-like groove rib 12 which is recessed inward immediately below a ridge 11 occurring in a peripheral direction by folding a peripheral wall of the shoulder 1-2. The body 1-3 comprising an upper half body 1-31 and a lower half body 1-32 is connected below the groove rib 12, while six protruding panels 13 having an elongated protruding face 131 are formed on the upper half body 1-31 and a longitudinal protruding line 132 is formed between the adjacent protruding panels 13, 13. Thus lateral compressive strength, that is, resistance against centripetal force functioning toward the center of the container is increased to prevent a shoulder 11 from deforming due to reduced pressure force at the time of filling contents.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic bottle container, and more particularly, to a plastic bottle container having a cylindrical cross section with an improved lateral compressive strength at the shoulder of the plastic bottle container.

[0002]

2. Description of the Related Art For the purpose of absorbing deformation under reduced pressure of a bottle formed of a synthetic resin such as a polyethylene terephthalate resin or the like, a conventional method has been proposed.
No. 59714 discloses that, as shown in the front view of FIG. 4, the upper half peripheral wall 25 of the body 23 of the elongated bottomed cylindrical body 21 is relatively thinner than the lower half peripheral wall 26 of the body 23. A synthetic resin bottle is known which is formed by forming a large number of vertically long, inwardly curving and widened concave portions 27 in parallel on the upper half peripheral wall 25.

However, in the above-mentioned prior art, the deformation caused by the decompression generated in the bottle is absorbed by the inwardly curved concave portion 27, which is further deformed and absorbed.
When the absorption effect is small and a large decompression occurs, the shoulder 2 of the upper half peripheral wall 25 formed thinner than the lower half peripheral wall 26
8 has the disadvantage that the appearance of the bottle is inevitably impaired by the dents that occur, and that the bottle easily slips down when the shoulder 28 is held during handling and transportation.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the gist of the present invention is to provide a plastic bottle container having a cylindrical cross section. Between a plurality of vertically long convex panels formed in
It is a plastic bottle container characterized by having groove ribs provided therearound.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. 1 is a front view showing an overall image of an embodiment of the present invention, FIG. 2 is a plan view of the embodiment of the present invention shown in FIG. 1, and FIG. 3 is a view taken along line XX of FIG. Is shown in a sectional view.

As shown in FIG. 1 as a front view, FIG. 2 as a plan view, and FIG. 3 as a side sectional view, a plastic bottle container having a cylindrical cross section (hereinafter referred to as "container"). 1), the ridgeline 11 of the shoulder 1-2 and the trunk 1-3 below it.
The groove ribs 12 are provided around the plurality of vertically long convex panels 13 formed in the above manner.

According to the present invention, the convex panel 13 having a large amount of inward deformation has a large decompression absorption effect, and
Since the lateral compressive strength of the shoulder 1-2 of the container 1 is improved by the groove ribs 12, troubles such as the recess of the shoulder 1-2 are eliminated even if the pressure is reduced when filling the contents. In addition, since the groove ribs 12 have an anti-slip effect, the disadvantage that the shoulder portion 1-2 is depressed during handling and transportation of the container 1 and slips easily is eliminated.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 3, the present invention relates to a container 1 having a cylindrical cross section comprising a plug 1-1, a shoulder 1-2, and a body 1-3. The shoulder 1-2 formed to be continuous with the plug 1-1 has a ridge 11 formed in the circumferential direction due to the bending of the peripheral wall. Immediately below the ridge line 11, a neck-shaped grooved rib 1 recessed inward is provided.
2 and the upper half 1 of the body is lowered downward through the groove ribs 12.
A torso part 1-3 including a lower part 31 and a lower half part 1-32 is formed continuously.

The upper half 1-31 of the trunk 1-3 has
As shown in the figure, six convex panels 13 each having a vertically long convex part 131 are formed, and adjacent convex panels 1 are formed.
A vertical ridge 132 is formed between the members 3 and 13. As in the present embodiment, the convex panel 13 and the vertical convex ridge 132 formed on the upper torso half portion 1-31 preferably have six surfaces in terms of the mechanical strength of the container 1, ease of handling, and appearance. However, it is not restricted to this.

Since the polyhedrons formed by the convex panels 13 are arranged in parallel with each other, as shown in FIG. 3, the polyhedrons are generally cylindrical in shape and easily conform to the circumferential groove ribs 12 as shown in FIG. Can be connected directly to the groove ribs 12 to increase the area, thereby increasing the reduced pressure absorbing effect. Further, since the groove ribs 12 can be formed seamlessly on the circumference, the lateral compressive strength is improved.

The most significant feature of the present invention is that a groove rib 13 is provided between the ridge 11 of the shoulder 1-2 and the upper end of the convex panel 13 formed on the upper trunk half 1-31 below the shoulder 1-2. It is located at the periphery, thereby increasing the lateral compressive strength, that is, the resistance to the centripetal force acting in the center direction of the container 1, to reduce the case where an external force is applied to the container 1 or the depressurizing force when filling the contents. The deformation of the shoulder 11 is prevented. Further, since the convex panel 13 has a large deformation amount from the outwardly curved state shown in FIG. 3 to the inwardly curved depression state due to the decompression, the effect of absorbing the decompression deformation is extremely large.

According to the present invention having the above structure, the convex panel 13 is used, and the ridge 11 of the shoulder 1-2 and the upper end of the convex panel 13 formed on the upper half portion 1-31 of the body below. A groove rib 13 is provided between the container 1 and the shoulder 1-
2, the problem that the shoulder 11 is depressed against the decompression when filling the contents is solved, and the container 1 is easily slipped off from the hand when the container 1 is handled and transported. Is also resolved.

[0013]

Since the present invention has the above-described structure, the following effects can be obtained. That is, if the present invention is used, since the lateral compressive strength of the shoulder of the container is improved, even when the container is filled with the contents, even if the container is decompressed, troubles such as dents in the shoulder are eliminated and the original appearance is restored. Can be maintained while handling and transporting the container.
The drawback that the shoulder portion is liable to slide down due to the depression is also eliminated.

[Brief description of the drawings]

FIG. 1 is a front view showing an overall image of an embodiment of the present invention.

FIG. 2 shows the embodiment of the invention shown in FIG. 1 in plan view.

FIG. 3 is a sectional view taken along line XX of FIG. 1;

FIG. 4 shows an example of the prior art in a front view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container 1-1 Plug part 1-2 Shoulder part 11 Ridge line 12 Groove rib 1-3 Body 1-31 Upper body half 1-32 Lower body half 13 Convex panel 131 Convex part 132 Vertical convex ridge part

Claims (1)

[Claims] In a plastic bottle container having a cylindrical cross section, a groove rib is provided between a ridgeline of a shoulder and a plurality of vertically long convex panels formed on a body below the shoulder. Characterized plastic bottle container.