JPS588670Y2 - 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 dispensing, but since they are large bottles, the weight of the liquid filled in the bottle becomes large and the pressure inside the bottle is resistant. It is necessary to use a fairly thick walled 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 its limits based on gender.

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, it is impossible to stand the bottle up, so it is necessary to attach legs, but these legs are inexpensive and provide reliable support for the reasons mentioned above. In addition, it must be strong enough to withstand the weight of the liquid filling station.

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 which projects downward and outward in a spherical shape via a shoulder portion 4 formed in a shoulder shape. A cylindrical body 6 having a lower end O is vertically disposed, and at least the parts other than the mouth and neck, that is, the shoulders, body, and bottom wall are made of saturated polyester resin formed by biaxial stretching. It's a large bottle.

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

A rod-shaped leg portion 7 is fitted into the lower part of the body.

The leg portion has a peripheral wall 8 that can be tightly fitted to the lower body of the weir body, and is bent back from its lower end in a curved state to form a space between it and the peripheral wall, and its upper end is close to the peripheral wall. hand,
It has a folded part 9 having elastic flexibility, that is, has a cushioning effect against loads applied from above, and has a bottom 10 which is connected to the upper end of the folded part 9 and is located above the lower end of the peripheral wall 8 to receive the bottom wall 5 of the weir body. have.

This rod-shaped leg portion 7 is a thin integrally molded member vacuum-formed from a sheet of a suitable synthetic resin.

In addition, if a hollow or hollow annular protrusion is provided on the inner periphery of the upper edge of the peripheral wall 8, and a groove for fitting is provided in the annular protrusion on the weir body so that they fit into each other, the fitting can be achieved. and the surrounding wall can be made 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 portion 4 is shaped like a scrap, and the body portion is shaped like a cylinder. Peripheral wall 5
Since the weir body 1 is formed into a spherical shape that protrudes downward, it can withstand the pressure inside the bottle filled with high pressure.Also, since the bar-like leg part 7 is fitted into the weir body 1, the bottom wall 5 protrudes downward. Although it is spherical, it can be made to stand upright, and the rod-like leg portion 7 is provided with a peripheral wall 8 that tightly fits into the lower part of the weir body, and is folded back in a curved state from the lower end of the peripheral wall to form a space between the rod-like leg portion 7 and the peripheral wall. A folded part 9 is provided which forms a space a and whose upper end is close to the peripheral wall, and a bottom 10 that connects to the upper end of the folded part 9 and receives the bottom wall 5 of the weir body is positioned above the lower end of the peripheral wall 8. Since the folded part 9 is provided as a thin integrally molded member,
A cushioning effect is generated in the weir body, and the load applied from the bottom wall 5 to the bottom 10 of the weir body can be supported with appropriate flexibility and flexibility due to the cushioning effect, and therefore, despite being thin, it will not be damaged by shock etc. The bottle has sufficient strength to support the weir body, requires less molding material, and the structure of the legs is simple, so it can be manufactured at low cost, and the bottle as a whole is lightweight. It is also economical in terms of transportation and other purposes, and can be applied to inexpensive containers such as carbonated drinks and high internal pressure.

[Brief explanation of the drawing]

The drawing is a partially cutaway side view of the present invention. 1... Weir body, 2... Mouth and neck, 4...
...Shoulder, 5...Bottom wall, 6...Torso, T...Bar-shaped leg, 8...Peripheral wall, 9
...Folded part, 10...Bottom.

Claims (1)

[Scope of utility model registration request] It has a mouth and neck part 2, a flattened shoulder part 4, a cylindrical body part 6, and a bottom wall 5 projecting downward and outward in a spherical shape, and at least the parts other than the mouth and neck part 2 are formed by biaxial stretching. It consists of a large weir body 1 made of saturated polyester resin, and a rod-shaped leg part 7 made of synthetic resin that is fitted into the lower part of the weir body, and the rod-shaped leg part 7 is tightly fitted into the lower part of the weir body. A circumferential wall 8 is provided, and a folded part 9 is provided which is bent from the lower end of the circumferential wall in a curved state to form a space between it and the circumferential wall, and whose upper end is close to the circumferential wall. Bottom 1 that receives the bottom wall 5 of the main body
A saturated polyester resin bottle fitted with a rod-shaped leg portion, characterized in that 0 is a thin integrally molded member located above the lower end of the peripheral wall 8.