JPS588671Y2 - Saturated polyester resin bottle with fitted hakama-like legs - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a large bottle made of saturated polyester resin for filling, for example, carbonated drinking water, which requires filling under high pressure.

Traditionally, glass bottles have been used as large bottles for this type of dispensing, but because they are large bottles, they can withstand the pressure inside the bottle as well as the weight of the liquid filled. Therefore, it is necessary to use a fairly thick inner bottle, which increases the overall weight of the bottle, increasing transportation costs and making it inconvenient to carry.

In the case of drinking water as mentioned above, the container cost and transportation cost account for a very small proportion of the price compared to other products, and the large bottle mentioned above has the purpose of reducing the container cost, but it is not convenient to carry. It has limitations in its sexuality.

In order to eliminate this drawback, we created a large biaxially stretched synthetic resin bottle with smooth shoulders, a cylindrical body, and a spherical bottom wall that protrudes downward. There have been attempts to use the bottle in this way, and it has been confirmed that it is thin and lightweight, and can withstand the pressure inside the bottle.

However, if the bottom wall protrudes downward in a spherical shape, the bottle cannot stand upright, so it is necessary to attach legs, but iron legs are also inexpensive and can be supported reliably for the reasons mentioned above. Moreover, it is required to have enough strength to withstand the weight of the liquid filling field.

This proposal is intended to meet such demands, and the drawings will be explained below.

Reference numeral 1 denotes a weir body, which has a threaded portion 3 for screwing the cap on the mouth and neck portion 2, and a bottom wall 5 extending downward in a spherical shape through a shoulder portion 4 formed in a shoulder shape at the lower end. A large bottle made of saturated polyester resin, which has a cylindrical body 6 hanging vertically thereon, and at least the parts other than the mouth and neck, that is, the shoulders, the body, and the bottom wall, are formed by biaxial stretching. It is.

It is preferable that the lower body portion has a smaller outer diameter portion 6a than the upper portion to facilitate fitting of the rod-shaped leg portions described below.

A rod-shaped leg portion 1 is fitted into the lower part of the body.

The leg portion has a peripheral wall 8 at its upper end consisting of a relatively long upper large-diameter portion 8a that tightly fits into the lower body of the weir body and a relatively short small-diameter portion 8b below the upper large-diameter portion 8a. A bottom 9 connected to the end and convexly curved downward is integrally molded into a thin piece by vacuum forming from an appropriate synthetic resin sheet.
This is constructed by inverting and folding it inward at the small diameter portion 8b, and when it is fitted into the weir body, the bottom 9 receives the spherical bottom wall 5 of the weir body.

Further, the lengths of the large diameter part 8a and the small diameter part 8b of the peripheral wall 8 are set so that the bending point between the large diameter part and the small diameter part is below the lowest position of the lower surface of the bottom 9. .

In addition, if a hollow or hollow annular protrusion is provided on the inner periphery of the upper edge of the peripheral wall 8, a groove into which the annular protrusion fits is provided at an appropriate position on the weir body 1, and they are fitted into each other, It becomes more difficult to come off, and the peripheral wall 8 becomes stronger.

According to the present invention, the weir body 1 is made of biaxially stretched saturated polyester resin, so it has excellent mechanical properties even if it is thin, and the shoulder part 4 is shaped like a scrap and the body part 6 is shaped like a cylinder. Since the bottom wall 5 is formed into a downwardly projecting spherical shape, it can withstand the pressure inside the bottle filled with high pressure, and even though the bottom wall 5 is a downwardly projecting spherical shape, the rod-shaped leg portion 7 is fitted therein. The Takara bottle can be made to stand upright, and its rod-shaped legs 7 are inverted and folded inward at the small diameter portion 8b of the surrounding wall 8, so that the surrounding wall 8
A force is constantly applied to the large diameter part 8a in the direction of expanding it, and the lower part of the large diameter part 8a is doubled, making it strong and not easily deformed by external forces. Even though the wall is thin, it has enough strength to support the weir body.The rod-shaped legs are made of synthetic resin and are integrally molded with a thin wall, so less molding material is required, and the structure is simple, so it can be manufactured at low cost. Furthermore, the bottle as a whole is extremely lightweight, which reduces transportation costs, which is particularly advantageous when storing objects that have a high internal pressure and are inexpensive, such as carbonated drinking water.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing an embodiment of the present invention, and FIG. 2 is a perspective view of the main components. 1... Weir body, 2... Funeral neck, 4...
Shoulder, 5...Bottom wall, 6...Torso, 7
...... Rod-shaped leg, 8... Peripheral wall, 8a...
...Large diameter part, 8b...Small diameter part, 9...
··bottom.

Claims (1)

[Scope of utility model registration request] A saturated polyester resin having a mouth and neck part 2, a shoulder part 4 with a flat shoulder shape, a cylindrical body part 6, and a bottom wall 5 projecting outward in a spherical shape, and formed by biaxially stretching at least the parts other than the mouth and neck part. It consists of a large weir body 1 made of synthetic resin, and a rod-shaped leg part 7 made of synthetic resin that is fitted into the lower part of the weir body 1. A peripheral wall 8 having a relatively short small diameter portion 8b is provided, and the upper end of the large diameter portion 8a is fitted to the lower outer periphery of the weir body, and the end of the small diameter portion 8b extends downward in a spherical shape. The bottom 9 is connected, the peripheral wall 8 and the bottom 9 are formed by thin integral molding, and the small diameter part 8b of the peripheral wall 8 is reversely folded inward so that the bottom 9 receives the spherical bottom wall 5 of the weir body. , a large diameter portion 8a and a small diameter portion 8 of the peripheral wall 8.
b, the length of which is set such that the bending point between the large diameter part and the small diameter part is equal to or less than the lowest color point of the lower surface of the bottom 9. Polyester resin bottle.