JP2002104355A - Synthetic resin bottle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a synthetic resin bottle which can easily reduce volume and deform so as to be sufficiently flat and be able to restore to the original shape, therefore, is easily and efficiently handled in process after molding to filling liquid contents and in disposal process, and reduces costs. SOLUTION: An inversion line 5 in an slanting stepped shape is connectedly provided in an axially symmetrical position of the bottle over the vertical circumference thereof. One half side from the inversion line 5 is a half shell part 6 with normal thickness, and a mouth tube part 1 is uprightly provided on a shoulder part 2 thereof. The other half side from the inversion line 5 is an inversion part 7 which has slightly smaller diameter than that of the half shell part 6 with thin thickness, and can be elastically inverted and deformed. Thus, the whole inversion part 7 is constituted so as to be able to easily cave and deform inside the half shell part 6, and restore to the original shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin bottle that can be easily reduced in volume and deformed and can be used after being restored to its original shape.

[0002]

2. Description of the Related Art As containers for various liquid contents, synthetic resin bottles formed by blow molding or biaxial stretch blow molding are widely used.

[0003]

However, while this synthetic resin bottle has the advantage of being lightweight, it is bulky and occupies a large space. In the process from delivery to filling with the content liquid, there has been a problem that the storage cost and the transportation cost are high, and the handling is troublesome.

[0004] After use, in order to facilitate the disposal, it is usually squashed flat with hands or feet to reduce the volume, but anyone can easily and squash this crush. There was a problem that it could not be performed reliably.

As a technique for facilitating the crushing of the bottle at the time of disposal, Japanese Utility Model Application Laid-Open No.
There is one described in -75212.

In the synthetic resin bottle described in this publication, a pair of vertical ribs is provided at an axially symmetric position of the body, and an arc-shaped rib extending toward the shoulder and the lower end of the body is connected to the vertical rib. At the time of disposal, the portion surrounded by the ribs is pressed and deformed to reduce the volume.

However, in this conventional technique,
The part that collapses and deforms is from the shoulder to the lower end of the trunk,
There is a problem in that the mouthpiece and the bottom are in their original shape, so that the whole cannot be sufficiently squashed and deformed. It was almost impossible to restore the collapsed portion to its original shape.

Accordingly, the present invention has been made to solve the above-mentioned problems in the prior art, and is intended to make it possible to easily, sufficiently flatten, and recoverably deform a synthetic resin bottle. It is an object of the present invention to make the process from molding to filling of the contents liquid and the disposal process easy and efficient, and to reduce the cost.

[0009]

Means for Solving the Problems In the present invention for solving the above technical problems, the means according to the first aspect of the present invention covers the entire circumference in the longitudinal direction at the axially symmetric positions of the shoulder, the trunk and the bottom. To form an inclined stepped reversing line in series, forming one half from this reversing line into a half-shell part of normal thickness, and erected a mouthpiece part on the shoulder part at the upper end, Forming the other half from the reversal line into a reversible part that is slightly smaller in diameter than the half shell part and that is thin and elastically reversible, so that the entire reversal part can be easily depressed and deformed in the half shell part. ,
And restoring the original shape.

The bottle formed by the container maker is inverted from the reversing line by pressing the reversing portion inward, and the entire reversing portion is collapsed into a half shell portion to reduce the volume.

As a result, almost half of the bottom as well as the shoulder and the trunk are depressed and deformed, and the mouthpiece is provided on the half shell side, so that the entire bottle is sufficiently reduced in volume. Handle in this reduced volume state and deliver to the product manufacturer.

In a product maker, the inverted portion that has been depressed and deformed is turned outward by pneumatic pressure to restore it to its original shape at the time of molding, and then filled with a content liquid and supplied to the product. Alternatively, the content liquid is directly injected into the reduced-volume bottle, the inverted portion that is depressed and deformed is turned outward, and the content liquid is filled as it is for use as a product.

[0013] When the bottle is discarded after use, the inverted portion is again depressed and reduced in volume and discarded.

According to a second aspect of the present invention, in addition to the first aspect, the thickness of the inverted portion is set to be not more than 2/3 of the thickness of the half shell portion.

According to the second aspect of the present invention, it is possible to more easily and smoothly achieve the collapse reduction deformation and the restoration to the original shape due to the elastic reversal of the reversal portion.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The bottle of the present embodiment has an overall planar shape by blow molding of an appropriate synthetic resin material or the like.
It is formed so as to be substantially elliptical, and a cylindrical mouthpiece 1 is erected on a shoulder 2 on one side of the long axis.

At the position on the long axis, which is the axially symmetric position of the bottle, an inclined stepped inversion line 5 is continuously provided over the entire circumference of the shoulder 2, the body 3 and the bottom 4 in the vertical direction. ing.

One side (left side in the figure) from this inversion line 5
The half part is formed into a normal thickness and is formed into a relatively hard half-shell part 6 which is easy to grasp, and the mouthpiece part 1 stands upright on the shoulder part 2 at the upper end thereof.

The other half (right side in the figure) of the inversion line 5 has a diameter slightly smaller than that of the half shell 6 and less than 2/3 of the thickness of the half shell 6 as a whole. It is formed on a reversible portion 7 formed into a thin wall and capable of elastic reversal deformation.

Therefore, the inversion portion 7 is easily elastically inverted by being pressed inward, and the entire portion is collapsed and reduced in the half shell portion 6 (see a two-dot chain line in the figure). By applying a force in the opposite direction to this and turning it outward, the original shape can be easily restored.

The relatively hard half shell 6 has a hardness that is easy to grip, so that it can be gripped and handled in the same manner as a normal bottle, and can be handled like a conventional volume-reduced bottle. In addition, it cannot be said that soft and stable gripping cannot be performed.

[0022]

Since the present invention has the above-described structure, the following effects can be obtained. In the bottle molded by the container maker, approximately half of the shoulder, trunk, and bottom are depressed and deformed by inverting the inverted part into the half shell, and the mouthpiece is provided on the half shell side Therefore, the volume of the entire bottle can be reduced sufficiently flat.

By handling in a state where the volume is sufficiently reduced and deformed, the occupied space can be greatly reduced, and the cost of storage and transportation in the process until the content liquid is filled can be reduced. In addition to being able to reduce the number, the handling can be easily and efficiently performed.

Further, the bottle after the inverted portion is restored to its original shape and used as a container, the inverted portion is again depressed and deformed, the volume can be reduced to a sufficiently flat shape, and the disposal process can be performed. Anyone can easily and sufficiently reduce the volume of the bottle after use, and can easily and efficiently dispose of the bottle.

Further, since the half shell portion can be stably gripped, the bottle can be gripped and handled in the same manner as a normal bottle.

[Brief description of the drawings]

FIG. 1 is a side view, partially in section, showing a first embodiment of the present invention.

FIG. 2 is a plan view, partly in section, of the embodiment shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1; Muzzle part 2; Shoulder part 3; Trunk part 4; Bottom part 5; Inversion line 6; Half shell part 7;

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shinji Shimada 3-2-6 Oshima, Koto-ku, Tokyo Inside the Yoshino Kogyosho Co., Ltd. (72) Inventor Takao Kurosawa 3-2-2, Oshima, Koto-ku, Tokyo Shares Inside Yoshino Kogyo Co., Ltd. (72) Inventor Shigeru Hayakawa 3-2-6 Oshima, Koto-ku, Tokyo F-term in Co., Ltd. Yoshino Kogyo Co., Ltd. 3E033 AA01 BA13 CA20 DA02 DA03 DB01 DD05 EA04 FA03 GA02

Claims (2)

[Claims] 1. An inversion line having a stepped shape over the entire circumference in the longitudinal direction at an axially symmetric position of the shoulder (2), the trunk (3) and the bottom (4).
(5), and one half from the reversal line (5) is formed into a half-shell part (6) having a normal thickness, and a shoulder at the upper end thereof is formed.
(2) The mouthpiece (1) is erected on the part, and the other half from the reversing line (5) is slightly smaller in diameter than the half shell (6) and has a thin wall that can be elastically reversibly deformed. Part (7), whereby the entire inverted part (7) can be easily depressed and deformed in the half-shell part (6) and can be restored to its original shape. . 2. The synthetic resin bottle according to claim 1, wherein the thickness of the reversing portion (7) is set to 2/3 or less of the thickness of the half shell portion (6).