JP3271464B2 - 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, according to the present invention, a parison is extruded into a mold having an insertion port for an insert pin and a blow pin, the parison is sandwiched between the molds, and the mold is closed to form a pre-blow molded article. Then, after inserting the insert pin having a synthetic resin cap at the tip into the opening of the pre-blow molded article formed by the insert opening of the insert pin of the mold, insert the blow pin of the mold. A blow pin was driven into the blow portion of the pre-blow molded body formed by the mouth to blow air into the blow portion, and after the insert pin and the blow pin retracted, the blow portion on the blow pin side was sealed.

The synthetic resin cap may be entirely made 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 driven into the pre-blow molded body with a driving pin. Is preferably inserted into the opening.

[0006] The means for sealing the blow portion on the blow pin side includes:
Although various methods can be adopted, heat sealing is particularly preferable.

The above invention is characterized in that an insert pin and an insertion port for a blow pin are provided in a pre-blow molded body, a cap is inserted with the insert pin, and blow molding is performed with the blow pin. A parison is extruded into a mold for forming a needle-shaped blow pin piercing portion in the pre-blow molded body, the parison is sandwiched, the mold is closed to form a pre-blow molded body, and then the insert pin of the mold is formed. Into the opening of the pre-blow molded body formed by the insertion opening, insert the insert pin having a synthetic resin cap for insert into the tip, and stab the needle-shaped blow pin into the piercing portion of the pre-blow molded body to air. After the insert pin and the needle-shaped blow pin retract, the needle-shaped blow pin It is also possible to adopt a configuration that seals the puncture inclusive of the side.

[0008] In short, either the insertion port for both the insert pin and the blow pin is provided in the pre-blow molded body from the beginning, or the blow pin is inserted into the pre-blow molded body for blow molding.

[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, in the invention of claim 1, the sealed blow-pin-side blown portion is opened by cutting or the like, By injecting the infusion from the blowing section on the blow pin side and sealing the blowing section again with a heat seal or the like, the aseptic treatment before infusion of the infusion can be eliminated.

Similarly, in the second aspect of the present invention, the sealed piercing portion on the blow pin side is opened, an infusion solution is injected from the piercing portion on the blow pin side, and the piercing portion is heat-sealed again. By sealing with, for example, it is possible to eliminate the need for aseptic treatment before infusion of the infusion solution.

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.

[0013]

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 sealing step of a blowing section, and FIG. 5 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, the opening 5 of the pre-blow molded body formed by the insertion port 4 of the insert pin formed in the upper part of the mold 1.
The insert pin 7 having an insert synthetic resin cap 6 attached to the tip thereof is driven into the inside, and the blow portion 9 of the pre-blow molded body 3 formed by the blow pin insertion opening 8 formed at the upper part of the mold 1. Is blown with air A and blown up. In this embodiment, as shown in FIGS. 2 and 3, both the insert pin 7 and the blow pin 10 are simultaneously lowered in the direction of the arrow so that the cap 6 is blow-molded with the insert at the same time as the insert. Pin 7
After inserting cap 6 with blow pin 1
It is also possible to perform blow molding at a time lag, such as by inserting 0 and performing blow molding.

After the completion of the blow molding, as shown in FIG. 4, the blow pin 10 and the insert pin 7 rise and recede, and the cap 6 is molded and integrated with the blow molded body 11. next,
The blow-in portion 12 of the blow molded body 11 on the blow pin side protruding from the upper surface of the mold 1 is heat-sealed by a heat sealing device 13 installed on the upper surface of the mold 1.

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 9 is formed, and the product container 14 is in a sealed state.

The synthetic resin cap 6 for the insert in the above embodiment is injection-molded from a single material as shown in FIG. 7 and has a rubber stopper 15 sandwiched inside. The portion 16 has a flange portion 17, and a lower portion has a long skirt portion 18 continuous with the flange portion 17 and integrated with the opening 5 of the pre-blow molded body 3.

Of course, synthetic resin cap 6 for inserts
Is not limited to the above embodiment. For example, as shown in FIG.
A pull-top portion 20 having a groove 19 may be formed. Also, as shown in FIG. 9, even if the cap also has a pull-top portion 20, the upper plug 21
And a lower plug 23 having a mounting portion 22 of the rubber plug 15 at the upper end and a flange portion 17 and a skirt portion 18 facing downward, and the upper plug 21 and the lower plug 23 are made of different materials. A cap that is molded and integrated with the above material may be used. For example, the upper plug 21 can be made of polyethylene that can be easily opened, and the lower plug 23 can be made of polypropylene or polyethylene that can be easily sealed.

Of course, as shown in FIG. 10, a cap comprising an upper plug 21 and a lower plug 23 having no pull-top portion may be used. In addition, each of the above caps has a flange portion in the middle portion. However, as shown in FIGS. 11 and 12, a step portion 24 is provided in the middle portion so that the cap plays the same role as the flange portion. Is also good. FIG. 11 is a cross-sectional view of an injection-molded cap made of a single material, and FIG.
2 is a cross-sectional view of a cap including an upper plug 25 and a lower plug 26.

In the above-described embodiment, the blow pin insertion opening 8 is provided on the upper surface of the mold 1 so that the blow pin 10 can be driven. In addition, as shown in FIG. A space 29 into which the needle-shaped blow pin 28 can be inserted, and a space 32 in which the piercing portion 31 of the needle-shaped blow pin 28 is formed in the pre-blow molded body 30.
13, the parison 2 is extruded into the mold 27 as shown in FIG. 13, the parison 2 is sandwiched therebetween, and the mold is closed as shown in FIG. 14 to form the pre-blow molded body 30, and thereafter, As shown in FIG. 15, the insert pin 35 having a synthetic resin cap for insert 34 attached thereto is driven into the opening 33 of the pre-blow molded body formed by the insert port 32 of the insert pin of the mold 27. 17, the needle-shaped blow pin 28 is inserted into the insertion portion 31 of the pre-blow molded body 30 to blow and inflate the air A, and as shown in FIG. 16, simultaneously with the retraction of the insert pin 35 and the needle-shaped blow pin 28, as shown in FIG. Thus, the piercing portion 31 on the side of the needle-shaped blow pin 28 is sealed with a heater. Then, as shown in FIG. 18, the mold 27 is opened, and the sealed product container 36 is taken out. FIG. 19 is a front view of the product container 36.

Therefore, the product container 36 is the same as the product container 14 described above, but since the inside of the container is in a sealed state at the molding stage, it is washed with water and sterilized before filling with an infusion solution as in a conventional container. There is no need to cut the heat-sealed blowing section 9 or piercing section 31 at the time of filling the infusion, fill the infusion, and heat seal again. When using this container filled with an infusion solution, a needle may be inserted into the rubber provided in the cap and used.

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 an insert pin and a blow pin, the parison is sandwiched, the mold is closed, and a pre-blow molded body is formed. Into the opening of the pre-blow molded body formed by the insertion port of the insert pin, the insert pin having a synthetic resin cap for an insert attached to the tip thereof, and the pre-blow molding formed by the insertion port of the blow pin of the mold. A blow pin is blown into the blowing portion of the body to blow air to inflate, and after the insert pin and the blow pin recede, it is a method of manufacturing a sterile container that seals the blowing portion on the blow pin side. Before injecting the container, wash the container with water, dry it, and do not need to sterilize it with heat. All the way there is no need to install a water-washing apparatus.

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 step of sealing a blowing section.

FIG. 5 is a perspective view showing a product removal process.

FIG. 6 is a front view showing a product container.

FIG. 7 is a sectional view of a synthetic resin cap for an insert.

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

FIG. 9 is a sectional view of another synthetic resin cap for an insert.

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.

FIG. 12 is a sectional view of another synthetic resin cap for an insert.

FIG. 13 is a perspective view showing a parison extrusion process.

FIG. 14 is a perspective view showing a mold closing step.

FIG. 15 is a perspective view showing a blowing step.

FIG. 16 is a perspective view showing a step of retracting an insert pin and a needle-shaped blow pin.

FIG. 17 is a perspective view showing a sealing step of the blowing section.

FIG. 18 is a perspective view showing a product removal step.

FIG. 19 is a front view showing a product container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Die 2 Parison 3 Pre-blow molded object 4 Insert pin insertion opening 5 Pre-blow molded object opening 6 Cap 7 Insert pin 8 Blow pin insertion opening 9 Blow part 10 Blow pin 11 Blow molded body 12 Blow part 13 Heat seal device 14 Product Container 27 Mold 28 Needle-shaped blow pin 30 Pre-blow molded body 31 Insertion part 33 Opening of pre-blow molded body 34 Cap 35 Insert pin 36 Product container

Claims (6)

(57) [Claims] 1. A pre-blow for extruding a parison into a mold having an insertion port for an insert pin and a blow pin, sandwiching the parison, closing the mold, and forming an opening for driving the insert pin and a blow part for driving the blow pin. The molded body is molded, and after that, while inserting the insert pin having a synthetic resin cap for insert at the tip into the opening of the pre-blow molded body formed by the insertion port of the insert pin of the mold,
A blow pin is blown into the blowing portion of the pre-blow molded body formed by the insertion port of the blow pin of the mold to blow and inflate air, and the cap and the opening of the pre-blow molded body are integrated, and the insert pin and the blow pin are integrated. The method for manufacturing a sterile container, characterized in that, after retreating, the blowing portion on the side of the blow pin is cut at the time of filling the infusion, filled with the infusion, and sealed again to be heat-sealable. 2. The mold according to claim 1, wherein the mold has an insertion port for an insert pin and a blow pin at an upper part, and the insert pin and the blow pin are simultaneously lowered from the upper part, and the cap is inserted and blow molded at the same time as the blow pin. A method for producing a sterile container according to claim 1. 3. The production of a sterile container according to claim 1, wherein the mold is a mold having an insertion port for an insert pin and a blow pin at an upper portion, and after the cap is driven by the insert pin, blow molding is performed by the blow pin. Method. 4. A parison is extruded into a mold having an insertion port for an insert pin and forming a piercing portion of a needle-shaped blow pin in a pre-blow molded body, the parison is sandwiched, the mold is closed, and the insert pin is driven. A pre-blow molded body for forming an opening is formed, and thereafter, the insert having a synthetic resin cap for an insert attached to the tip thereof in the opening of the pre-blow molded body formed by the insertion port of the insert pin of the mold. At the same time as the pin is driven in, the needle-shaped blow pin is stabbed into the pierced portion of the pre-blow molded body to blow and inflate the air. A method for producing a sterile container, characterized in that the container is sometimes cut, filled with an infusion solution, and sealed again so as to be heat-sealable. 5. The cap made of synthetic resin has a mounting portion for a rubber plug, and a cap having a skirt portion thereunder. The insert pin having the cap attached thereto is driven into the cap, and The method for manufacturing a sterile container according to any one of claims 1 to 4, wherein the skirt portion is integrated with the opening formed by the insertion port of the insert pin of the mold. 6. A pre-blow for extruding a parison into a mold having an insertion port for an insert pin and a blow pin, sandwiching the parison, closing the mold, and forming an opening for driving the insert pin and a blow for driving the blow pin. The molded body is molded, and thereafter, the insert pin having a synthetic resin cap for an insert attached at the tip is driven into the opening of the pre-blow molded body formed by the insertion opening of the insert pin of the mold, and the mold is molded. The blow pin is blown into the blowing portion of the pre-blow molded body formed by the insertion port of the blow pin to blow and inflate air, and the cap and the opening of the pre-blow molded body are integrated, and after the insert pin and the blow pin are retracted, Cuts the blow part on the blow pin side at the time of infusion filling A method for producing an infusion-filled product, wherein the infusion is filled and sealed again so as to be heat-sealable, and then the heat-sealed blowing section is cut and filled with the infusion, and the blowing section is heat-sealed again.