JPS5924663Y2 - Thin-walled synthetic resin bottle - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a thin-walled bottle made of biaxially stretched resin.

Biaxially stretched bottles have recently been attracting attention because the strength of the bottle can be increased by biaxially stretching.

However, if the bottom wall of the bottle is formed in a direction perpendicular to the axis of the bottle, as in conventional products, sufficient biaxial stretching of the bottom wall of the bottle cannot be achieved, and therefore it is difficult to strengthen the bottom wall of the bottle. Ta.

To perform biaxial stretching of the bottom wall of the bottle, the bottom wall of the bottle may be formed to bulge downward into a spherical shape, but in this way, the bottle cannot stand up because the bottom wall is spherical. It disappears.

Therefore, it may be possible to fit a cylindrical footrest (also called a hakama) to the bottom of the bottle to protect the bottom wall of the bottle, but this would tend to cause the bottle to lose its harmony in appearance, which would reduce its commercial value. There was a drawback that it caused a loss.

The present invention eliminates the above-mentioned drawbacks, and will be explained below with reference to the drawings. Reference numeral 1 shows a thin weir body.

The weir body is formed by biaxially stretching a cylindrical cold parison with a bottom and an open top made of PET or PvC by injection molding. From the upper end of the cap 5 through the shoulder 4
is made to protrude upward.

An outward flange 7 is provided around the base of the mouth and neck, and the bottom wall 2 is formed into a spherical shape that projects downward.

A cylindrical base 8 made of a synthetic resin bag is fitted into the lower part of the weir body.

The footrest has a peripheral wall 9 whose upper part is fitted to the outer circumferential surface of the lower end of the weir body, and from the inner surface of the lower end of the peripheral wall, an inwardly flange-shaped support plate 10 that supports the bottom wall of the weir body extends inwardly. It stands out.

The weir body is supported in an upright state by fitting the lower part of the weir body to the leg stand 8 whose lower end is placed on the mounting surface 11.

Incidentally, it is preferable that the fitting cylinder 10a is vertically provided from the lower end of the leg base.

This will be discussed later. An upper fitting member 12 of a synthetic resin bag is fitted into the upper part of the weir body.

This member has a peripheral wall 13 with openings at both upper and lower ends, the lower end of which is fitted into the outer peripheral surface of the upper end of the body of the weir body, and has an inward flange 14 protruding from the inner surface of the peripheral wall. Insert the mouth and neck of the weir body.

A fitting wall 15 is attached to the inner peripheral edge of the flange hole, into which the outer peripheral surface of the outward flange of the weir body is fitted.

Further, an engaging protrusion 16 is attached to the inner surface of the fitting wall, which engages with the lower surface of the outer circumference of the outward flange of the bottle body.

When the upper fitting member 12 is fitted to the upper part of the weir main body, the upper fitting member 12 is designed so that the upper surface of the neck portion or the top wall of the cap 5 screwed onto the mouth neck portion does not protrude upwardly than the upper end surface of the surrounding wall of the fitting member. Set it up.

The inner diameter of the upper end of the peripheral wall is made equal to the outer diameter of the aforementioned fitting cylinder 10a, and by fitting the fitting cylinder 10a of another bottle into the upper end of the peripheral wall 13, a plurality of bottles can be stacked. It is provided for.

The entire bottle is formed by fitting the bottle body, the base, and the upper fitting member into each other, and the outer shape of the entire bottle is preferably in the shape of a barrel with hoops tightened at several places on the top and bottom.

The shape may be a beer barrel shape if the product to be stored in the venue is beer, a liquor barrel shape if the product is to be stored in the venue, or the like.

In order to obtain the barrel shape, protrusions 17 in the shape of a "squeeze" are provided at several locations on the top and bottom of the bottle.

In the embodiment shown in FIG. 1, the legs are provided on the outer periphery of the lower end of the leg base member, the outer periphery of the upper end of the upper fitting member, and the outer periphery of both upper and lower ends of the body of the bottle body. They are provided on the outer periphery of both upper and lower ends of the base member and on the outer periphery of both upper and lower ends of the upper fitting member.

This project has the above structure, and since the bottle body is a two-wheeled stretched bottle, it is extremely lightweight, saves on materials, and has great strength. Because of this, even though the bottom wall of the tank body is formed into a spherical shape, the bottle can be stood up without any problem. Since the fitting members are fitted together, the pedestal and the upper fitting member are in harmony with each other, so that the external shape of the structure is not damaged, and it is convenient to form a barrel-shaped bottle. The lower part is fitted into the upper end of the body of the bottle body, and a fitting wall 15 is attached to the inner peripheral edge of the inward flange 14 protruding from the inner surface of the peripheral wall 13, and the fitting wall is connected to the neck of the bottle body. While fitting to the outer periphery of the outward facing flange of the bottle, the upper fitting member is securely fitted to the upper part of the weir body, and the upper fitting member does not come off or tilt. The shoulder part has a lower biaxial stretching rate than the body part, and its strength is lowered, but in this proposal, a leg stand with a support plate is placed at the bottom of the bottle body, and an upper fitting member 12 with an inward flange is placed at the top of the weir body. Since they are fitted together, the bottom wall and shoulder can be reinforced.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view of the present bottle, and FIG. 2 is a partially sectional front view of the present bottle shown in another embodiment. 1... Bottle body, 8... Leg stand, 12...
... Upper fitting member, 17 ... Projection.

Claims (1)

[Scope of utility model registration request] A trunk 3 is made to stand up from the periphery of the bottom wall 2 which is formed to bulge downward in a spherical shape, and a mouth part 6 is made to stand up from the upper end of the trunk via a shoulder part 4, and is directed outward at the base of the mouth and neck part. A thin weir body 1 made of a synthetic resin bag and biaxially stretched with a flange 7 attached.
The upper part of the peripheral wall 9 is fitted into the lower end of the leg of the weir body, and the lower surface of the bottom wall 2 is supported by a support plate 10 that projects inward from the inner surface of the peripheral wall. Platform 8 and
The lower part of the peripheral wall 13 is fitted into the upper end of the body, and a fitting wall 15 is attached to the inner peripheral edge of the inward flange 14 protruding from the inner surface of the peripheral wall. A thin-walled resin bottle comprising an upper fitting member 12 having a cylindrical shape and made of a synthetic resin bag fitted to the outer periphery of an outward flange.