JPS62122925A - Manufacture of sterilized package - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to the production of a sterile package that can be stored for a long period of time by filling a container made of a laminated material including paper with liquid such as juice or milk and sealing the container. The present invention relates to a method for producing a sterile package, in which a continuous laminated material containing the paper is cut into a predetermined length and molded.

[Prior art and its problems]

Containers made of laminated materials including paper are filled with juice or milk aseptically and sealed. The continuous laminated material is sterilized with heated hydrogen peroxide solution, and then the hydrogen peroxide solution is completely removed using heated air, etc. After drying and removing it, it is formed into a tube shape,
There is a manufacturing method in which the device is filled with liquid, then sealed and cut under the liquid surface.

In addition, after cutting a pre-sterilized continuous laminated material into a predetermined length, a container is formed, sterilized by spraying with hydrogen peroxide solution, and heated and dried, and then filled with liquid, filled, and sealed. There is a manufacturing method.

The above two manufacturing methods are currently common methods for manufacturing packaging bodies in which containers made of laminated materials including paper are filled with liquid and sealed.

The former is easy to sterilize laminated materials, and requires 2 sterilization, liquid filling,
Since it is cut after sealing, even if the laminated material contains paper, there is no problem of paper dust due to cutting, and it can be stored for a long time, and there is almost no residual peroxide.

However, since sealing is performed below the liquid level, there is no head space in the package, so the liquid spills when the package is opened, and in the case of a liquid containing solids, sealing failure occurs, making it impossible to fill the package.

On the other hand, since the latter is filled with liquid after the container is formed, it is possible to fill the container with liquid containing solids, and since it has a head space, there is a risk that the liquid will spill when the container is opened. However, since the containers are formed after cutting the continuous laminated material to a predetermined length, paper dust is generated during cutting, and the overlapping parts are not completely sterilized when forming the containers, so the packaging is not aseptic. Since it is not manufactured, it cannot be stored for a long time. Also.

After sterilization with a hydrogen peroxide solution, drying and removal using heated air for a long period of time cannot be performed, which is undesirable because a large amount of hydrogen peroxide remains.

[Problem to be solved]

A sterile package that is filled with a liquid and sealed using a laminated material containing paper, which can be filled with a liquid containing solids, and
It is an object of the present invention to provide a method for producing a package having a head space and a method for producing a sterile package free from problems of paper dust and residual hydrogen peroxide.

[Means for solving problems]

After cutting a continuous laminated material including paper to a predetermined length, it is passed through a sterilization bath containing hydrogen peroxide, dried, a sleeve is formed, and then a container is formed, filled with liquid and sealed, and then cut again. After forming the sleeve, it was passed through a hydrogen peroxide water bath, dried, formed into a container, and filled with liquid and sealed.

[Effect]

After cutting the continuous laminated material including paper into a predetermined length or after forming the sleeve, it is passed through a hydrogen peroxide water bath.
Paper dust generated during cutting is removed and sterilized, and the cut surface of the cut laminated material can also be sterilized.

Furthermore, since the sheet or sleeve is sterilized with hydrogen peroxide solution, subsequent heat drying can be performed completely.

〔Example〕

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

FIG. 1 is a process diagram showing a method for manufacturing a package, in which a continuous laminated material Ill, which includes paper in the middle and consists of polyethylene layers on both sides, is cut into a predetermined length to form a blank (2). , both ends of this blank (2) are overlapped and sealed to form a sleeve (3). and.

This sleeve (3) is passed through a sterilizing bath (4) containing a heated hydrogen peroxide solution sterilizing solution, and after sterilization, excess sterilizing solution is removed with a squeezing roll (5). )
The sleeves (3) are inserted into the vanes (6) of the drying drum (7), respectively, and heated air is used to dry and remove hydrogen peroxide.

In this method of manufacturing a sterile package, the sterilized sleeve (3) is molded into a container in a container manufacturing section (8), and then the contents are filled and sealed in a filling and sealing section (9).

In addition, as shown in Fig. 2, the same laminated material as above (1
) is cut to a predetermined length to form a blank.

This blank (2) was passed through the same sterilizing bath (4) as described above to be sterilized, and then excess sterilizing solution was removed with a squeezing roll (5).

Next, it is heated, wound around a heated roll (10), heated and dried, and hydrogen peroxide is removed. This is a method for manufacturing a sterile package in which both ends of the sterilized blank (2) are overlapped to form a sleeve (3), and then the container is formed, filled with contents, and sealed in the same manner as described above.

Next, the sterilization method in the sterilization bath (4) will be explained.

As shown in Figures 3 and 4, there are U-shaped side guides +41) (41) on both sides in the sterilization bath (4), and U-shaped presser guides in the front and back between the side guides +4+)f41). f4 [D 1461 is provided, and the side guide (4υ
(41) inside sprocket) t4Z(43(424(4)
2) with the four ends of the endless chain (43) and the side guide f41+ (411). Sterilization made from hydrogen peroxide solution
It consists of a configuration that satisfies (47).

The side guide (411 (41) has a groove with a cross-sectional shape of a single character or a U-shape, and the side guide (4D (41)
It is preferable that the interval 41) is narrower than the width of the sleeve or blank and the sleeve or blank is transported in a curved state to ensure reliable transport. Especially in the case of sleeves, by curving them,
As shown in FIG. 5, the opening allows the inner surface of the sleeve to be brought into uniform contact with the sterilizing solution.

In the above explanations, the continuous laminated material is cut to a desired length and then made into a sleeve, but the laminated material that has been made into a sleeve in advance is cut to a desired length and the subsequent steps are performed. Needless to say, it can be done.

Further, the continuous laminated material may be sterilized in advance.

〔effect〕

Since the packaging of the present invention is manufactured by one or more of the following methods, the problem of paper dust caused by cutting the continuous laminated material is eliminated;
Further, even if the sleeve is formed in advance in the form of a sleeve, the inner surface of the sleeve can be sterilized in the same way as the outer surface, since the sleeve is allowed to pass through the sterilizing solution in an open state in the sterilizing bath.

Further, since the side guide is provided narrower than the width of the sleeve or blank, the sleeve or blank can be reliably conveyed even if it is cut and discontinuously shaped.

Even with the method of filling and sealing liquids into pre-formed containers, sterilization can be performed reliably, the problem of residual hydrogen peroxide is eliminated, and sterile packaging for liquids containing solids can be manufactured. It has become possible.

[Brief explanation of drawings]

Fig. 1 is a process explanatory diagram showing one embodiment of the manufacturing method of the present invention, Fig. 2 is a process explanatory diagram showing another embodiment, and Fig. 3 is a sterilization bath shown in Figs. 1 and 2. FIG. 4 is an explanatory cross-sectional view of the conveyance portion of the sterilizing bath, and FIG. 5 is an explanatory view showing the conveyance state of the sleeve. ill... Continuous laminated material 12)... Blank (3)... Sleeve (4)... Sterilization bath (
51...Aperture roll (6)...Blade (7)
... Drying drum (8) ... Container manufacturing department! 9
)...Filling seal part (101...Heating roll (41
)...Side guide (4z...Sprocket (4ri...Endless chain)...Feed claw (grip...Attachment (46)...Presser guide (
4η・・・Denticide liquid

Claims (3)

[Claims] (1) Aseptic packaging made by cutting a laminated material including paper to a desired length, passing it through a sterilizing bath containing hydrogen peroxide, sterilizing it, heating and drying it, forming a container, filling it with liquid and sealing it. How the body is manufactured. (2) The method for producing a sterile package according to claim 1, wherein the laminated material is in the form of a blank. (3) The method for producing a sterile package according to claim 1, wherein the laminated material is sleeve-shaped.