JP3271465B2 - Manufacturing method of aseptic container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a sterile container suitable for a sterile container, particularly a sterile infusion container.

[0002]

2. Description of the Related Art Since a conventional infusion container is sealed with a cap after the infusion is filled, it is necessary to wash the container with water, dry it, and apply heat to sterilize it before injecting the infusion. Was.

[0003]

However, it is cumbersome to wash the container, dry it, and heat it before injecting the infusion before injecting the infusion. In addition to the infusion infusion device,
There is a problem that it is necessary to separately install a large-sized water washing device, and it takes a long time to perform the water washing. An object of the present invention is to provide a method for manufacturing a sterile container which does not require a washing device and does not require aseptic treatment before infusion.

[0004]

In order to achieve the above object, the present invention relates to a mold having a blow pin insertion port,
The parison is extruded, the parison is sandwiched and the mold is closed to form a pre-blow molded body. Thereafter, a synthetic resin cap for insert is inserted into the opening of the pre-blow molded body formed by the insertion port of the blow pin of the mold. The blow pin attached to the cap is driven into the air blow section formed on the cap, and air is blown to inflate the blow pin. After the blow pin retracts, the blow section is sealed.

The synthetic resin cap may be made entirely of synthetic resin. However, a rubber stopper for inserting a needle of an infusion needle is loaded, and the synthetic resin cap with the rubber stopper is attached to the opening of the pre-blow molded body. It is preferable to insert the

It is necessary to form an air blowing portion for blowing air from a blow pin into the inside of the pre-blow molded body in the synthetic resin cap. This air blowing portion can be achieved by forming a blowing hole inside the cap. However, since the blowing portion needs to be sealed after blow molding, it is preferable that a blowable pipe that can be sealed is exposed to the outside. Then, a blow pin is set in the blowing pipe, and air is injected.

Although various means can be employed for sealing the air blowing portion, heat sealing is particularly preferable. For example, after the blow pin recedes, the heat sealing pin descends,
Suitably, the blowing section is hermetically sealed.

In short, the present invention is characterized in that a pre-blow molded body is provided with a blow pin insertion port, a cap is inserted with the blow pin, and blow molding is performed through an air blowing portion formed in the cap.

[0009]

[Action] Therefore, the container is not opened as in the past,
Since it is a sealed container with a synthetic resin cap attached, when injecting an infusion, the sealed blowing part is opened by cutting or the like, the infusion is injected from the blowing part, and this injection is performed again. If the blowing section is sealed with a heat seal or the like, aseptic treatment before infusion of the infusion can be eliminated.

In addition, aseptic treatment can be eliminated not only for infusion but also for beverages and other liquids.

Therefore, unlike the conventional case, it is not necessary to wash, dry, and apply heat to sterilize the opened container, and it is not necessary to incorporate the washing device as a continuous process.

[0012]

1 to 5 are perspective views showing steps of a method for producing a sterile container according to the present invention. 1 is a perspective view showing a parison extrusion process, FIG. 2 is a perspective view showing a mold closing process, and FIG.
4 is a perspective view showing a blowing step, FIG. 4 is a perspective view showing a retracting step of the blow pin, FIG. 5 is a perspective view showing a sealing step of the blowing section, and FIG. 6 is a perspective view showing a product removing step.

First, as shown in FIG. 1, a parison 2 is extruded into a mold 1 in a mold open state, the parison 2 is sandwiched, and the mold is closed while pre-blowing, and as shown in FIG. Is molded. Next, as shown in FIGS. 2 and 3, a synthetic resin cap 6 for insert is inserted into the opening 5 of the pre-blow molded article formed by the blow pin insertion port 4 formed in the upper part of the mold 1. Is blown into the air blowing portion 8 formed in the cap 6 to inflate the pre-blow molded body 3. In FIG. 3, reference numeral 9 denotes an air filling pipe provided in the blow pin 7, which is connected to the air blowing section 8 of the cap 6 while being attached to the tip of the blow pin 7. Reference numeral 10 denotes a rubber stopper provided inside the cap 6.

After the completion of the blow molding, the blow pin 7 rises and recedes, and the cap 6 is molded and integrated with the blow molded body 11. Next, the blow-in portion 8 of the blow-molded body protruding from the upper surface of the mold 1 is heat-sealed by the heat-sealing device 12 which is installed on the upper surface of the mold 1 and moves up and down.

After heat sealing, the product container 14 is taken out as shown in FIG. FIG. 6 is a front view showing the product container 14 taken out of the mold 1, and a cap 6 is provided at an upper part.
A heat-sealed blowing section 8 is formed, and the product container 13 is in a sealed state.

As shown in FIGS. 8 and 9, the insert 6 made of synthetic resin for insert in the above embodiment is injection-molded from a single material and has a rubber stopper 10 held therein. The intermediate portion 14 has a flange portion 15, the lower portion of which is continuous with the flange portion 15, and the long hakama portion 1 for integrating with the opening 5 of the pre-blow molded body 3.
6. Reference numeral 8a denotes a blowing hole in the blowing section 8.

Of course, synthetic resin cap 6 for inserts
Is not limited to the above embodiment. For example, as shown in FIG. 10, a step portion 17 may be provided in the intermediate portion 14 so as to play a role similar to that of the flange portion 15.

Further, as shown in FIG. 10, a pull-top portion 1 having a tear-off V-groove 18 on the rubber stopper 10 is provided.
9 may be formed. And the upper stopper 20 which clamps the rubber stopper 15 and the mounting part 21 of the rubber stopper 15 are provided at the upper end,
A cap may be formed by a lower plug 22 having a flange portion 15 and a skirt portion 16 facing downward, and the upper plug 20 and the lower plug 22 may be molded and integrated with different materials.
For example, the upper plug 20 can be made of polyethylene that can be easily opened, and the lower plug 22 can be made of polypropylene or polyethylene that can be easily sealed.

Since the product container 13 of the present invention is as described above, since the inside of the container is in a sealed state at the molding stage, there is no need to wash and sterilize before filling the infusion, unlike a conventional container. Then, the heat-sealed blowing section 8 may be cut at the time of filling the infusion, filled with the infusion, and heat-sealed again.

The present invention is not limited to the above embodiment.

[0023]

As described above, according to the present invention, a parison is extruded into a mold having an insertion port for a blow pin, the parison is sandwiched, the mold is closed, and a pre-blow molded body is formed.
Thereafter, the insert pin having the synthetic resin cap for insert attached at the tip is driven into the opening of the pre-blow molded body formed by the insertion port of the blow pin of the mold, and into the air blowing portion formed in the cap. After the air is blown to inflate and the blow pin recedes, since the method for manufacturing a sterile container for sealing the blow-in portion is performed, the container is washed with water, dried and heated before injecting the infusion as in the related art. It is not necessary to perform aseptic treatment by using a washing machine, and it is not necessary to install a large-sized washing device.

Therefore, the filling step of the infusion is simplified, which is very preferable. This manufacturing method is suitable for a sterile infusion container, but is not limited thereto, and can be adopted as a method for manufacturing containers for foods and the like, which is extremely large as it contributes to the technical field.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a parison extrusion process.

FIG. 2 is a perspective view showing a mold closing step.

FIG. 3 is a perspective view showing a blowing step.

FIG. 4 is a perspective view showing a retracting step of the blow pin.

FIG. 5 is a perspective view showing a step of sealing a blowing section.

FIG. 6 is a perspective view showing a product removal process.

FIG. 7 is a front view showing a product container.

FIG. 8 is a cross-sectional view of a synthetic resin cap for an insert.

FIG. 9 is a plan view of the cap.

FIG. 10 is a sectional view of another synthetic resin cap for an insert.

FIG. 11 is a sectional view of another synthetic resin cap for an insert.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 mold 2 parison 3 pre-blow molded product 4 insert pin insertion opening 5 pre-blow molded product opening 6 cap 7 blow pin 8 air blowing part 9 air filling pipe 10 rubber stopper 11 blow molded product 12 heat sealing device 13 product container

Claims (4)

(57) [Claims] A parison is extruded into a mold having a blow-pin insertion opening, the parison is sandwiched, the mold is closed, and a pre-blow molded body is formed. Thereafter, a pre-blow formed by the blow-pin insertion opening of the mold is provided. In the opening of the molded body, the blow pin having a synthetic resin cap for needle puncture attached to the tip of the infusion needle is driven in, and air is blown into the air blowing portion formed in the cap to inflate the cap. Integrating the opening of the pre-blow molded body and after the blow pin has receded, the aseptic container is characterized in that the blowing section is cut at the time of filling the infusion, filled with the infusion, and sealed again to be heat-sealable. Production method. 2. The method for producing a sterile container according to claim 1, wherein the synthetic resin cap is provided with a rubber stopper for piercing the injection needle for infusion. 3. The method for producing a sterile container according to claim 1, wherein the synthetic resin cap has a skirt portion integrated with the opening of the pre-blow molded article. 4. A parison is extruded into a mold having a blow pin insertion port, the parison is sandwiched, the mold is closed and a pre-blow molded article is formed, and then a pre-blow molded by the blow pin insertion port of the mold. In the opening of the molded body, the blow pin having a synthetic resin cap for needle puncture attached to the tip of the infusion needle is driven in, and air is blown into the air blowing portion formed in the cap to inflate the cap. After integrating the opening of the pre-blow molded body and the blow pin receded, the blowing section was cut at the time of filling the infusion solution, filled with the infusion solution, and sealed again to be heat-sealable, and then heat-sealed. A method for producing an infusion-filled product, in which the blowing section is cut and filled with an infusion solution, and the blowing section is heat-sealed again.