JPS5837840Y2 - Equipment for filling high-temperature liquid contents into polyethylene terephthalate resin bottles - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device for filling a biaxially stretched structure made of polyethylene terephthalate resin with a high-temperature content liquid such as milk, which is subjected to high-temperature sterilization such as juice. The object of this invention is to inject and fill a high-temperature liquid content into a biaxially stretched dam body made of terephthalate resin without any trouble.

Biaxially stretch-molded structures made of polyethylene terephthalate resin (hereinafter simply referred to as structures refer to biaxially stretch-molded bottles made of polyethylene terephthalate resin) have many excellent physical properties and characteristics, and are therefore used in a wide range of fields. It is now used in

However, like other synthetic resin embankments, this structure has low heat resistance, so it cannot be used for containers containing liquids such as milk or juice that have been sterilized at high temperatures and are poured into bottles. There wasn't.

As a means of increasing the heat resistance of this structure, there is a method of heat setting the structure, but this heat setting treatment is cumbersome to operate, and the heat resistance enhanced by heat setting is at most about 60 degrees Celsius. Since the content liquid filled at a high temperature of 80 to 90° C. has almost no effect, heat setting for this increase in volume is not an effective means for improving heat resistance.

For this reason, the scope of use of the structure is extremely limited, and a structure with many other excellent physical properties and characteristics can be used as a container for liquids to be processed at high temperatures, such as milk or juice. This was strongly desired.

The present invention was devised in response to the above-mentioned request.The content of high-temperature sterilized milk, juice, etc. is at a high temperature only during filling, and after the filling is completed, the container is sealed and closed. Considering that the temperature of the container needs to be room temperature or cooled, the structure is cooled to such an extent that the structure is not affected by heat by the liquid when filling the structure with the liquid.

Embodiments of the present invention will be described below with reference to the drawings.

The content liquid filling device according to the present invention is configured to move the high-temperature content liquid into the mouth part 2 by moving downward relative to the structure 1 which is successively moved to a predetermined position to be filled with the content liquid.
The injection cylinder 4 to be injected and filled into the injection cylinder 4 moves relative to the structure 1 without being delayed by the injection cylinder 4, and the opposite wall 6' moves relative to the structure 1.
and a chamber frame body 6 which is positioned facing at least the outer surface of the bottle body 1 from the shoulder to the body.

The chamber frame body 6 has a space inside, and a large number of spout ports 8 are formed in an opposing wall 6' facing at least the outer surface of the body 1 from the shoulder to the body. The internal space of the frame body 6 communicates with a cooling fluid supply section 11 through a supply pipe 10 connected to a supply port 9 .

That is, the cooling fluid supplied from the cooling fluid supply section 11 into the chamber frame 6 is ejected from each jet port 8 toward the surface of the embankment body 1, thereby cooling the expanded body 1.

In the illustrated embodiment, the inside of the chamber frame 6 is divided by a partition wall 7 having a large number of through holes 7' on the side of the supply port 9 and the side of the jet port 8. This is to ensure that the cooling fluid supplied into the chamber frame 6 reaches all the jet ports 8 as uniformly as possible.

Various configurations can be considered as means for attaching the chamber frame body 6, but in the case of the illustrated embodiment, the inner diameter is larger than the mouth part 2 and the lower end is arranged coaxially with the injection cylinder 4, and the lower end is attached to the flange part 3. The seal cover tube 5 is assembled to the lower end of the seal cover tube 5, which is formed into a cylindrical shape that abuts against the seal cover tube 5.

The reason why the chamber frame 6 is assembled to the cylindrical seal cover cylinder 5 with its lower end abutting against the flange 3 is that the cooling fluid enters into the opening 2 during the cooling operation of the extension 1. This is to prevent

In the case of the embodiment shown in FIG. 1, the chamber frame 5 has a spherical arc shape and is directly attached to the seal cover cylinder 5.

On the other hand, in the case of the embodiment shown in FIG.
It is attached via '.

In both of these embodiments, the seal cover cylinder 5 is moved up and down integrally by the up and down movement with the injection cylinder 4 as the axis, but the movement of the chamber frame 6 relative to the extension 1 is limited to this up and down movement. For example, in the case of the embodiment shown in FIG. 2, the chamber frame 6 is divided into two along a vertical plane including the axis, and the divided chamber frame 6 is moved horizontally from the lateral direction. It's very long.

However, in this case, it goes without saying that each of the two divided chamber frames 6 must be provided with a supply port 9 and connected to the cooling fluid supply section 11 through a supply pipe 10, respectively.

Further, in the case of the embodiment shown in FIG. 1, the chamber frame 6 has a spherical arc shape, and its opposing wall 6' faces the portion of the body extension 1 from the shoulder to the body. In the embodiment shown in FIG. 1, it is advantageous to use cooling water as the cooling fluid.

This is because the cooling water that is ejected from the spout 8 and adheres to the surface of the body from the shoulder to the body of the body 1 flows down while contacting the surface of the body 1, and the opposite wall 6' is not opposed to the structure. This is because it is possible to cool even the lower part.

On the other hand, in the case of the embodiment shown in FIG. Therefore, it is preferable to use cooling gas as the cooling fluid.

This is because, in addition to the effect of ejecting cooling gas from each jet port 8 and spraying it onto the surface of the extension 1 to cool it, the entire embankment body 1 can be placed in a cold air atmosphere.

Since the present invention has the above-described structure, when the filler 1 moves to a predetermined filling position, the injection barrel 4 moves downward relative to the filler 1 and enters into the mouth 2. ,
The chamber frame body 6 moves downward without delaying the movement of the injection cylinder 4, and stops at the position where the lower end of the seal cover cylinder 5 abuts against the flange part 3.

When the chamber frame body 6 moves downward to a predetermined position, the switching valve or the like is operated in advance of the injection and filling operation of the high-temperature liquid from the injection cylinder 4 into the bank body 1 to sufficiently cool down the bulk body 1. Then, cooling fluid is supplied from the cooling fluid supply section 11 into the chamber frame 6 to cool the extension 1.

When the bulking body 1 is sufficiently cooled, high-temperature content liquid is injected into the embankment body 1 from the injection tube 4 while continuing to supply the cooling fluid.

In this way, even if the high-temperature content liquid is filled into the embankment body 1, the increase body 1 is sufficiently cooled and is also cooled during the filling operation of the high-temperature content liquid, so that the increase body 1 is kept away from the high-temperature content liquid. It is not affected by heat.

In this way, during the filling operation of the high-temperature content liquid into the high-temperature content liquid, the high-temperature content liquid 1 is not affected by the heat of the high-temperature content liquid, but after the filling operation is completed, the high-temperature content liquid 1 is sealed and closed. However, until the temperature of the content liquid drops to room temperature,
Since the temperature of the content liquid is still high, it is necessary to continue cooling the embankment body 1 by other suitable cooling means.

Of course, the chamber frame 6, which is a part of the filling device of the present invention, may be used as a cooling means until the content liquid reaches room temperature, but normally in this type of device, the device is installed in the order of each process. are arranged, and the embankment body 1 is moved one after another in the order of each process, so using the chamber frame body 6, which operates as a part of the filling device, also in the cooling process means that it is difficult to use as a device. This will cause many inconveniences,
It is desirable to provide another dedicated device for cooling the embankment body 1 after filling is completed.

As described above, the device of the present invention can inject and fill the high-temperature content liquid into the embankment body 1, which has low heat resistance, without causing any hindrance. can be used as a container for high-temperature filling of liquids such as milk or juice.

Furthermore, since its structure and handling are extremely simple, it can be easily implemented in existing filling equipment.

As is clear from the above description, in the present invention, the biaxially stretch-molded embankment body 1 made of polyethylene terephthalate resin can be used as a container for high-temperature filling of a liquid such as milk or juice. There is no need to perform any special processing on the embankment body 1, and since the structure and handling are simple, it is easy to implement, and has many excellent effects.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a main part of an arrangement in which it is advantageous to use cooling water as the cooling fluid. FIG. 2 is a longitudinal sectional view of a main part of a configuration in which it is advantageous to use a cooling gas as the cooling fluid. Explanation of symbols 1: Embankment body, 2: Mouth part, 3: Flange part, 4: Injection cylinder, 5: Seal force bar cylinder, 6: Chamber frame body, 6': Opposing wall,
7: Partition wall, 7': Through hole, 8: Spout port, 9: Supply port, 10
: Supply pipe, 11: Cooling fluid supply section.

Claims (1)

[Scope of utility model registration request] Biaxially stretched polyethylene terephthalate resin bottle 1
This is a device for injecting and filling a high-temperature liquid inside the body, and includes an injection cylinder 4 for high-temperature liquid that moves relatively downward and enters into the mouth 2 of the structure 1 which has been sequentially moved to a predetermined position. A chamber that moves without delay to the injection cylinder 4 and is located opposite the body structure 1, and has a large number of spout ports 8 opened in a facing wall 6' facing at least the outer surface of the body body 1 from the shoulder to the body. A device for filling a high-temperature content liquid into a polyethylene terephthalate resin structure, which is composed of a frame body 6 and a cooling fluid supply source 11 connected inside the chamber frame body 6.