JPH0285102A - Packaging method and apparatus for paper container - Google Patents

Abstract

PURPOSE:To permit an reduction in the size of a chamber and an easy maintenance of its inside in an aseptic condition by forming a primary crease on the top of a container, removing paper chips therefrom and thereafter transferring the same into an aseptic chamber at the time of making up the container bottom wherein paper chip in liable to be generated. CONSTITUTION:A tubular container material is inserted into a bottom forming mandrel from a feeding device 10 to be heat sealed for making up the bottom part of a container. After discharging from the mandrel, the container is sprayed with an aseptic air by a carrying device having a carrier, the paper chips produced at the time of forming the bottom part are therefrom by a paper chip removing device 12 having a suction mechanism and the container top is then folded along a ruled line to form a primary crease. The container is thereafter transferred into an aseptic chamber in order for its inside to be sprayed with a disinfecting agent such as vapor and then dried with a hot air. After the container thus disinfected is filled with a predetermined amount of its contents by a filling nozzle 22, the container completely packaged with its top sealed by a sealer 25 is carried out from an aseptic camber B.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a filling and packaging method and packaging apparatus for filling and packaging liquids such as milk, juice, and alcoholic beverages into paper containers.

<Prior Art> Currently, paper containers are increasingly being used as containers for liquids. By using this paper container,
It has the advantage that production costs can be reduced by performing assembly from raw materials and filling and packaging the assembled container at the same time.

It also has the advantage of being easy to dispose of after use.

In order to preserve the liquid filled in such paper containers for a long period of time, it has been common practice to perform aseptic filling and packaging. In order to perform this aseptic filling and packaging, for example, Japanese Patent Application Laid-Open No. 61-24
As shown in Publication No. 4702, a carton material is formed into a cylinder, transported into a sterile chamber, and in the sterile chamber, the bottom of the container is assembled, the container is sterilized with a sterilizing agent, dried, filled with liquid, the top is folded, The top was folded and the container was sealed.

<Problems to be Solved> As shown in the above publication, by performing the steps after assembling the bottom of the container in a sterile chamber, external influences are eliminated;
Since the top part is curled, paper dust is inevitably generated, and there is a risk that the inside of the sterile chamber will be contaminated by the paper dust.

Furthermore, there is a possibility that the generated paper powder may adhere to devices in the sterile chamber or enter the container.

Furthermore, since the container bottom assembly device is located inside the sterile chamber, the sterile chamber becomes large and there is a problem in that it is difficult to maintain a constant atmosphere inside the chamber.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method and apparatus for filling and packaging paper containers in which a sterile chamber is made as small as possible and the influence of paper powder is minimized.

<Means for Solving the Problems> The present invention provides a bottom forming section in which a folded container material is made into a cylindrical shape and the bottom is assembled using a mandrel, and a paper dust removal device that removes paper dust by blowing onto the open container and using suction. ,
and a forming section with a primary curling device that creases the top, a device containing a sterilizer to sterilize open containers transported from the forming section, a drying device, a filling nozzle, a secondary curling device, and an opening heating device. This is an aseptic filling and packaging device comprising: and an aseptic chamber section in which the sealing device is kept under positive pressure.

At this time, the conveyance of the container to the molding section and the conveyance of the container to the aseptic chamber section are carried out separately, and the aseptic filling and packaging apparatus is used to transfer the container from the molding section to the sterile chamber section by a separate transfer device.

In addition, the present invention uses a paper container material in a cylindrical shape, first assembles the bottom of the container, then removes paper dust from the open container, and after first folding the top, the container is placed in a sterile chamber. This is a method for filling and packaging paper containers, which involves sterilizing the container, drying it, filling it with liquid, folding the top a second time, heating the opening, and sealing the container.

<Function> In the molding section, assembling the bottom part where paper dust is most likely to occur,
After the top part is first folded and the paper dust is removed, the paper is transferred to the sterile chamber, so that the influence of paper dust is reduced in the sterile chamber.

Furthermore, since assembly can be performed at a location other than the edentulous chamber at the bottom of the container, the chamber can be made smaller and it is easier to maintain the inside of the chamber in a sterile state.

Furthermore, since the molding section and the sterile chamber section are separated from each other in the transport mechanism, even if an abnormality occurs in the molding section, the sterility of the sterile chamber section will not be affected.

<Example> Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a schematic cross-sectional explanatory view showing an example of the paper container filling and packaging apparatus of the present invention. A bottom forming device (not shown) in which a mandrel is placed, a conveying device that conveys the container with an open top taken out from the bottom forming device, and a paper that removes paper dust that has adhered to the container during conveyance through the conveying device. Molding section A having a powder removing device 12 and a primary curling device 13 that folds the top part along ruled lines
This is an aseptic filling and packaging apparatus consisting of a transporting device for the molding section A, a sterile chamber section B equipped with a separate transporting device, and a transfer section C provided between the molding section A and the sterile chamber section B.

Here, the sterile chamber section B includes a sterilizing agent spraying device 20, a drying device 21, a filling nozzle 22, a secondary folding device 23, an opening heating device 21, and a sealing device 25 for sealing the opening, in accordance with the conveyance direction. .

In each of the above-mentioned devices, the operating part is located inside a sterile chamber, and the driving source for operating this operating part is located outside the sterile chamber, and this sterile chamber is always maintained at a more positive pressure than the outside air. In addition, the moving part C has a transfer guide 30 having an opening of the same size as the transfer carrier between the terminal end of the molding part A and the starting end of the sterile chamber part B; It consists of a moving arm 31 that is located above the transfer guide 30 and moves up and down. When the transfer to the molding section is stopped, the moving arm 31 descends and carries the container along the transfer guide from the molding section A to the sterile container. Transfer to chamber part B.

Next, a filling and packaging method using the above-mentioned filling and packaging apparatus will be explained.

First, a cylindrical material for a paper container is inserted into a cylindrical shape from the supply device 10 into a mandrel of a bottom forming section, and an assembled bottom is formed by heat sealing.

Next, the container discharged from the mandrel is blown with sterile air by a conveying device having a carrier, and paper dust generated during bottom formation is removed by a paper dust removing device 12 having a suction mechanism. A primary curling process is performed in which the top of the container is folded in along the ruled lines.

After passing through the pre-process in the molding section, it is located at the end of the conveying device.
The moving arm descends from above, and the container is transferred along the moving guide to the carrier of the transfer device in the sterile chamber section.

A sterilizing agent such as steam is sprayed onto at least the inner surface of the opening of the container transferred to the sterile chamber, and then the container is dried with hot air.

After filling the sterilized container with a predetermined amount of contents from the filling nozzle, it is folded again, and then the inner and outer surfaces of the opening are made bondable with hot air, the top is sealed with a sealing device, and the container is filled. The packaging is completed and the product is discharged from the sterile chamber part B.

<Effects of the Invention> As described above, the present invention can improve
-The next folding part is done outside the sterile chamber, and is removed and transferred before being transferred to the sterile chamber, so that the inner surface of the sterile chamber and various devices inside the chamber are prevented from being contaminated by paper powder as much as possible. Can be done.

Furthermore, since the bottom assembly section, which occupies a large area, is provided outside the sterile chamber, the sterile chamber can be minimized in size, making it easier to maintain a constant atmosphere within the sterile chamber.

Furthermore, since the molding section and the sterile chamber section have separate conveyance devices, even if an abnormality occurs in the molding section, the sterility of the sterile chamber section will not be compromised, and the machine can be moved again while maintaining sterility. be able to.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram showing one embodiment of the present invention.

Claims (3)

[Claims] (1) Make the paper container material into a cylindrical shape, first assemble the bottom of the container, then remove paper dust from the open container, fold the top into a first shape, and then sterilize the container in a sterile chamber. A method for filling and packaging paper containers, which includes drying, filling with liquid, second folding of the top, heating and sealing of the opening. (2) A bottom forming section where the folded container material is made into a cylindrical shape and the bottom is assembled using a mandrel, a paper dust removal section where paper dust is removed by blowing air and suction from the open container, and a primary habit where the top is folded. A sterilizer spraying device, a drying device, a filling nozzle, a secondary folding device, an opening heating device, and a sealing device are placed in a positive pressure state to sterilize open containers transported from the forming section with the folding device. A filling and packaging device consisting of a sterile chamber section. (3) Container transport to the molding section and container transport to the sterile chamber section are separate, and from the molding section to the sterile chamber section,
The filling and packaging device according to claim 1, wherein the filling and packaging device is transferred by a separate transfer device.