JPS61244702A - Manufacture of paper vessel - 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 (Field of Industrial Application) The present invention relates to a method for manufacturing paper containers for storing milk, juice, alcohol, other soft drinks, etc.

(Prior art) Paper containers, which are replacing conventional bottles as containers for beverage liquids, are made by assembling the paper containers from cartons, which are then filled with contents and sealed to create a product. This has become popular in recent years because it is possible to reduce production costs, and the container can be easily crushed and disposed of after use. Furthermore, in order to facilitate pouring out the contents of the paper container and to improve sealing performance after opening, it is common practice to attach a spout to the wall surface of the head of the paper container.

FIG. 3 shows a commonly manufactured paper container.

The bottom of the paper container 1 is folded flat, and a pair of sloped surfaces are formed at the head, and a spout 2 having a flange 3 is attached to one side of the sloped surfaces.

When filling such paper containers with contents aseptically, the entire paper container conveyance device is covered with a sterile chamber, and in this chamber the bottom of the paper container is assembled, the inner surface of the container is sterilized, the spout is attached, and the contents are filled. They were filling, assembling and sealing the head.

(Problems with the conventional technology) However, in the process of attaching the spout to the paper container, the spout itself is not sterilized, and the contents are contaminated by bacteria that adhere to the spout, reducing the sterility effect. A problem had arisen.

(Object of the Invention) The present invention has been made in view of the above-mentioned problems, and provides a method for manufacturing a paper container that can perform aseptic filling with a high sterilization effect on a paper container having a pouring spout. .

(Summary of the Invention) In order to achieve this object, the present invention provides a method for attaching a pouring spout to a tube-bound paper container having a heat-sealing adhesive layer on the inner and outer surfaces. A step of assembling the bottom of the paper container on a rotating turret-like mandrel, a step of discharging the paper container with the assembled bottom onto a conveyance device, and spraying hydrogen peroxide solution onto the inner surface of the paper container on the conveyance device. The present invention provides a method for manufacturing a paper container, which sequentially includes a sterilization drying process in which the paper container is sterilized and then dried, a filling process in which the contents are filled into a paper container whose inner surface has been sterilized, and a process in which the head of the paper container is assembled. be.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a schematic cross-sectional view showing an embodiment of an apparatus for carrying out the paper container manufacturing method of the present invention, in which 10 is a paper container supplying device for supplying a paper container 1 with a tube attached thereto, and 20 is a paper container supplying device for supplying the paper container 1. A paper container bottom assembly device 30 is a paper container sterilization, filling, and sealing device that sterilizes the paper container 1, fills the contents, and seals the top. FIG. 2 is a 1-1 arrow view of the paper container feeding device 10 shown in FIG. 1.

The paper container supply device IO includes a gauge 11 in which a large number of paper containers 1 pasted into tubes and folded flat are stacked.
a transfer device (not shown) that takes out and transfers the paper container l;
It consists of a spout supply device 14 that inserts the spout 2 into a predetermined position of the paper container 1, an ultrasonic sealing device 12 that welds the spout 2 to the paper container 1, etc., and includes a gauge 11, the above-mentioned transfer device, and a spout supply device. The device 14 and the ultrasonic sealing device 12 are each 2
arranged in columns. The spout supply device f14 is connected to the gutter 15.
16, and there is a soccer ball near the tip of the gutter 15.
) is provided, and this sucker allows the spout 2 to
is taken out from the gutter 15, 16 and inserted into the paper container 1. A support member 13 is provided below the ultrasonic sealing device 12, and when sealing the spout 2, the head of the paper container 1 is covered with the support member 13, and the ultrasonic sealing device 12 is attached to the paper container 1.
The paper container 1 and spout 2 are pressed together by pressing from the outside.

The paper container bottom assembly device 20 includes a vertical turret 21 that has a mandrel 22 and rotates intermittently, a heater 23, 24 that heats the bottom of the paper container 1, a bottom hanging device W25 that has an arm 26, 26, a guide 27, Bottom folding pressure device 28
21 heaters 23 and 24 are installed around this vertical turret and near the stopping position of the mandrel 22.
, folding device 25, guide 27, folding pressure device 2
8 are arranged in sequence.

The paper container sterilization, filling, and sealing device 30 includes a conveyor 31 that intermittently conveys the paper container 1 with its bottom assembled, a hydrogen peroxide spraying device 32, a drying device 33, 34, and a cooling device that are sequentially arranged near the top of the conveyor 31. 35, head-second crimp folding device 36, filling bag W37 having a filling nozzle 38, head secondary crimp folding device f39, heater 40, head folding pressurizing device 4
It is composed of 1. The hydrogen peroxide spray device 32 sprays hydrogen peroxide onto the entire inner surface of the paper container 1 to which the spout 2 is attached, and this spray sterilizes the inner surface of the paper container 1 and the spout 2. It will be done.

Further, the paper container bottom assembly device 20 and the paper container sterilization, filling, and sealing device 30 are housed in a sterile chamber 50.

Next, the operation of the above device will be explained.

First, a large number of paper containers 1 that have been pasted into tubes and folded flat are stacked on a gauge 11 provided in a paper container supply device 10. The paper containers 1 are taken out one by one from the gauge 11 by a transfer device (not shown), expanded into a rectangular column shape, and placed in the Sl
After being transferred to position S2 and S3, it is sequentially transferred horizontally to positions S2 and S3.

Next, as shown in FIG. 2, the rotating device (not shown) sequentially rotates and transfers it to positions 54, S5, and S6 in a direction perpendicular to the horizontal direction. At position S5, a sucker (not shown) holds each spout 2 supplied from the spout supply device 14 through the gutter 15, 16, and holds each spout 2 at a predetermined position on the head wall of the paper container l. Insert it from the inside into the hole provided in the When the paper container l into which the spout 2 has been inserted reaches the position 86, the head of the paper container 1 is covered with the support member 13 by an extrusion device (not shown), and then the ultrasonic sealing device 12 The tip is pressed from the outside of the paper container 1 and ultrasonic vibrations are applied. This ultrasonic vibration causes the heat-sealable adhesive layer provided on the inner surface of the paper container 1 and the flange 3 of the spout 2 made of heat-fusible synthetic resin to be welded together.

The paper container 1 with the spout 2 welded thereon is rotated from the S6 position to the 83 position, and then horizontally transferred to the PO position, where the paper container bottom assembly device 20 is housed in the sterile chamber 50. It is covered with a mandrel 22. At this time, the paper container l is attached to the mandrel 22 so that the folding surface at the bottom is perpendicular to the rotating direction of the mandrel 22, that is, the spout 2 on the head is attached so that the surface is parallel to the rotating surface of the mandrel 22. be crowned.

Paper container l covered with mandrel 22 is turleft 21
By intermittent rotation, P2, P3,
Rotationally transferred to positions P4, P5, P6, and Pl.
At positions P2 and P3, the heat-sealing adhesive layers provided on the inner and outer surfaces of the bottom of the paper container 1 are melted by the heaters 23 and 24. At position P4, the folding surface of the paper container 1 is folded inward by the arm 26.26 provided on the bottom folding device 25, and this folded state is folded into the guide 27.
is held and rotated to the next position P5.

At position P5, the bottom part of the paper container 1 is pressed and bonded to the mandrel 22 side by the bottom folding pressurizing device 28, and the assembly of the bottom part is completed.

When the paper container 1 with the assembled bottom reaches the position Pl,
The mandrel 22 is discharged by a discharge device (not shown) onto the conveyor 31 provided directly below the turret 21, and the mandrel 22 from which the paper container 1 has been removed returns to the position P1 via the position P8, and the paper container 1 is removed again. is crowned.

The paper containers 1 are intermittently transferred horizontally on the conveyor 31. When the paper container 1 reaches directly below the hydrogen peroxide spraying device 32, the paper container 1 is lifted by a lifting device (not shown).
is lifted to a predetermined position, and the hydrogen peroxide spray device 3
2, hydrogen peroxide is sprayed onto the entire inner surface of the paper container 1.

At this time, since the spout 2 is attached to the paper container 1,
Hydrogen peroxide is simultaneously sprayed inside the spout 2 to sterilize the spout 2. Thereafter, the paper container 1 is lowered to its original position by the lifting device and sent to the next drying process by the conveyor 31. In the drying process, hot air is blown from the drying devices 33, 34 onto the inner surface of the paper container 1, and the hydrogen peroxide formed in the form of a spray is dried.

The paper container 1 heated by the above-mentioned hot air blowing is further transferred by the conveyor 31, the head of the paper container 1 is given a crease by the occipital-next crease folding device cooled by the cooling device 35, and then the paper container 1 is further transferred by the conveyor 31. Transferred to the next filling process.

When the paper container 1 reaches directly below the filling device, the paper container 1 is lifted to a predetermined position by a lifting device (not shown), and after being filled with a predetermined amount of contents from the filling nozzle 38, the paper container 1 is lifted by the lifting device (not shown). The paper container 1 is lowered to its original position and transferred to the next process by the conveyor 31.

The paper container 1 filled with the contents is transferred to the head secondary curling device 3
After the paper container 1 is folded again in step 9, it is transferred by the conveyor 31, and hot air is blown onto the head of the paper container 1 by the heater 40 to melt the heat-sealable adhesive layer provided on the inner and outer surfaces, and then the paper container 1 is transferred to the conveyor 31. 31.

Next, the head of the paper container 1 is sealed by the head folding and pressurizing device 41, and the manufacture of the paper container 1 is completed. Thereafter, the paper container 1 is discharged from the sterile chamber 50 by a discharge device (not shown).

(Effects of the Invention) As described above, in the present invention, after the spout is attached, the bottom of the paper container is assembled, sterilized, filled with contents, and the top of the paper container is sealed in a sterile chamber. Since the spout is sterilized, aseptic filling with extremely high sterilization effects is performed. In addition, in carrying out the present invention, there is no need to newly provide a sterilization process only for the spout,
Since the paper container is conveyed linearly, it is possible to aseptically fill the container using a compact and inexpensive manufacturing device.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of an apparatus for carrying out the present invention, and FIG. 2 is a paper container supplying apparatus 10 shown in FIG. 1.
Fig. 3 (a) is an external view of a general paper container with a spout, and Fig. 3 (b) is an external view of the spout used in Fig. 3 (a). It is. 1... Paper container 2... Spout 3... Flange 10... Paper container supply device 11... Gauge 12... Ultrasonic seal device 14... Spout supply device 20... Paper container bottom assembly device 21...Turret 22...Mandrel 23, 24, 40...Heater 25...Bottom folding device 26...Bottom folding pressurizing device 30...Paper container sterilization, sealing and filling Device 31...Conveyor 32...Hydrogen peroxide spray device 33, 34...Drying device 35...Cooling device 36...Head-to-next curling device 37...Filling device 39... Head secondary folding device 41...Head folding pressurizing device 50...Sterile chamber Patent applicant Dai Nippon Printing Co., Ltd. Agent Patent attorney Atsushi Konishi TI & 2 Figure 3 Procedures Amendment ( Format) % formula % 2. Name of the invention Method for manufacturing paper containers 3. Relationship with the person making the amendment Patent applicant's address Address of the patent applicant (289) Return Fugu M Han translation ￥ Red representative 1r crown noise proverb 4, agent 〒162

Claims (1)

[Claims] A step of attaching a pouring spout to a paper container pasted onto a cylinder having heat-sealable adhesive layers on the inner and outer surfaces and supplying the paper container; and a step of assembling the bottom of the paper container on an intermittently rotating turret-like mandrel. , a step of discharging the assembled paper container at the bottom onto a conveying device; a sterilization drying step of spraying hydrogen peroxide solution onto the inner surface of the paper container on the conveying device and then drying it; and a step of drying the paper container with the inner surface sterilized. A method for manufacturing a paper container, comprising sequentially performing a filling step of filling the container with contents and a step of assembling the head of the paper container.