JP2002104357A - Synthetic resin bottle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make volume of a synthetic resin bottle changeable by forming the bottle easily and sufficiently flat and restorable so that the bottle can be handled easily, efficiently and cost effectively in processes from forming to filling and in disposal. SOLUTION: An inclined step-shaped reversible line 5 is formed in an axially symmetrical position and along with a total longitudinal surrounding of a bottle. One side divided at the reversible line is formed of a half shell part 6 of which thickness is normal, while the other half is formed of a reversible part 7 of which diameter is a little smaller than and thickness is smaller than that of the half shell part 6, and shape is changeable due to elastic reversion. The total reversible part 7 can be retracted inside of the half shell part 6 and also returned to its original shape, and thereby increasing and decreasing of a volume of the bottle can be achieved simply and without inconvenience.

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 are 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 ribs. When discarded, 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 Among the present invention for solving the above technical problems, the means according to the first aspect of the present invention comprises a mouthpiece,
Forming an inversion line in the form of an inclined step over the entire circumference in the vertical direction at the axially symmetric positions of the shoulder, the torso, and the bottom. Forming in the half shell portion having, the other half is formed in a reversible portion that is slightly smaller in diameter than the half shell portion and is thin and elastically reversible, whereby the entire inverted portion is placed in the half shell portion. That is, it is configured so that it can be easily depressed and deformed and can be restored to its original shape.

[0010] The bottle formed by the container maker is inverted from the inversion line by pressing the inversion portion inward, and the entire inversion portion is collapsed into a half shell portion to reduce the volume. Handle in the state of being converted and deliver it to the product manufacturer.

In a product maker, the inverted portion that has been depressed and deformed is inverted outward to restore it to its original shape at the time of molding, and then filled with a content liquid and supplied to the product. The inversion to the outside may be performed by pneumatic pressure, or may be performed by directly injecting the content liquid and using the content liquid.

At the time of handling the bottle, the bottle can be stably gripped and handled by gripping the half-shell portion having a normal thickness, and it is as soft and soft as the conventional volume-reduced bottle. The grip does not become unstable.

After the bottle is used, the inverted portion is again collapsed and reduced in volume by crushing or the like, and the bottle is 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 body of this embodiment is made by a blow molding of a relatively soft synthetic resin material such as a polyethylene resin or the like. It is formed in a connected shape.

At the position on the imaginary plane located on the long axis which is the axially symmetric position of this bottle, that is, at the butted portion of the substantially semicircular cylinders having different diameters, the mouthpiece portion 1 and the shoulder portion 2, an inversion line 5 having a stepped shape is formed over the entire circumference in the vertical direction over the body 3 and the bottom 4.

One half (the left side in the figure) half of the inversion line 5 is formed in a half shell portion 6 formed to have a normal thickness, and the other half (the right side in the figure) half. Is formed on a reversible portion 7 that is slightly smaller in diameter than the half-shell portion 6 and is formed into a thin wall having a thickness of 2/3 or less of the thickness of the half-shell portion 6 and is capable of elastic reversal deformation. I have.

Accordingly, the reversing portion 7 is elastically reversibly deformed by being pressed inward, and is entirely depressed and reduced in volume in the half shell portion 6 (see the two-dot chain line in the figure). It is transported, handled or discarded, and by applying a force in the opposite direction to turn it outward, it can be easily restored to its original shape and function as a storage container.

If a certain amount of the content liquid is stored,
A sealing sheet such as a laminate sheet is welded and fixed to the upper end surface of the barrel 1 to seal the barrel 1.

[0021]

Since the present invention has the above-described structure, the following effects can be obtained. A bottle molded by a container maker is inverted from the reversing line by pressing the reversing part inward, and the entire reversing part including the mouthpiece part and the bottom part is collapsed into a half shell part to reduce the volume and deform. It is possible to reduce the volume by handling it in a flat enough shape.
The occupied space can be greatly reduced, so that costs such as storage and transportation in the process until the content liquid is filled can be reduced, and handling can be performed easily and efficiently.

Further, the bottle after the inverted portion is restored to its original shape and used as a container can be sufficiently flattened and volume-reduced by deforming the inverted portion again so as to be collapsed. , The volume reduction deformation of this used bottle,
Anyone can easily achieve a sufficiently flat state, and the disposal can be easily and efficiently performed.

Further, since the half shell portion has a normal thickness and is easy to hold, handling by holding the bottle can be stably achieved, and the conventional reduced volume bottle is used. It does not mean that it is soft like a body and that handling by gripping becomes unstable.

[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;

Continued on the front page (72) Inventor Shinji Shimada 3-2-6 Oshima, Koto-ku, Tokyo Inside Yoshino Kogyo Co., Ltd. (72) Inventor Takao Kurosawa 3-2-2, Oshima, Koto-ku, Tokyo Co., Ltd. Yoshino Corporation Inside the industrial plant (72) Inventor Shigeru Hayakawa 3-2-6 Oshima, Koto-ku, Tokyo F-term in Yoshino Industrial Co., Ltd. F-term (reference) 3E033 AA01 BA13 CA02 CA20 DB01 DD05 EA04 FA03 GA02

Claims (2)

[Claims] 1. A reversing line having an inclined stepped shape over the entire circumference in the longitudinal direction at an axially symmetric position of the barrel portion (1), the shoulder portion (2), the body portion (3) and the bottom portion (4). 5), one half of the half-shell part (6) with the boundary of the reversal line (5) is formed into a half-shell part (6) having a normal thickness, and the other half is formed from the half-shell part (6). It is formed in a reversible part (7) having a slightly smaller diameter and a thin elastic reversible shape, whereby the entire reversal part (7) can be easily depressed and deformed in the half shell part (6), and A synthetic resin bottle that 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).