JPS6290230A - 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 paper container has become popular in recent years because it reduces production costs and allows the container to be easily crushed and disposed of after use. In order to facilitate pouring out the product and improve sealing performance after opening, it is common practice to attach a pouring spout to the wall surface of the head of a 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 on the head, and a spout 2 having a flange 3 is attached to one side of the sloped surface by a spout attachment device.

The process of attaching the pouring spout 2 to the paper container 1 was carried out after the bottom of the paper container 1 was assembled, and immediately before the paper container l was transported by the transport device and filled with the contents by the filling device. .

(Problems with the prior art) However, when the spout is installed just before filling the contents, the filling device and the spout mounting device are placed close to each other, so the spout mounting device It is undesirable in terms of equipment configuration and paper container hygiene, such as contamination caused by the operation of the device, or conversely, contamination of the filling device by the spout attachment device, and mounting the spout on the conveyance line of the paper container conveyance device. Because the equipment is placed
If the above-mentioned conveyance line becomes long and a defective attachment of the spout is discovered through an inspection performed at the final position of the conveyance line, a problem arises in that the loss of containers increases as the conveyance line becomes longer.

(Object of the Invention) The present invention has been made in view of the above-mentioned problems, and the above-mentioned filling device is contaminated by supplying a paper container with a pouring spout attached to the process of assembling its bottom. The purpose of the present invention is to provide a paper container manufacturing method that can minimize container loss in the event of a defective spout attachment.

(Summary of the Invention) To achieve this objective, the present invention provides a process for supplying a paper container having a heat-sealable adhesive layer on the inner and outer surfaces, a spout attached, and a cylinder pasted, and a turret-shaped container that rotates intermittently. assembling the bottom of the paper container on a mandrel; discharging the paper container with the assembled bottom onto a conveying device; and assembling the top of the paper container after filling the paper container with the contents on the conveying device. A paper container manufacturing method is provided in which the steps of assembling are sequentially performed.

(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 1 for carrying out a paper container manufacturing method according to the present invention. A paper container bottom assembly device 30 is a paper container filling and sealing device that fills the paper container 1 with 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 10 includes a feeder 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 containers l from the feeder 11, and a predetermined location for the paper containers 1. It is composed of a spout supply device 14 that inserts the spout 2 into the position, an ultrasonic sealing device 12 that welds the spout 2 to the paper container l, etc. The sealing devices 12 are each arranged in two rows. The spout supply device 14 is the gutter 1
5.16, and a sucker (not shown) is provided near the tip of the gutter 15.16, and the spout 2 is taken out from the gutter 15.16 and inserted into the paper container l by this sucker. 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 crimp device 25 that has an arm 26, 26, a guide 27, and a bottom section. 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 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 35 arranged in sequence near the top of the conveyor 31. , head-next curling device 36
, a filling device 37 having a filling nozzle 38, a secondary head folding device 39, a heater 40, and a head folding and pressurizing device 41.

The hydrogen peroxide spraying device 32 sprays hydrogen peroxide onto the entire inner surface of the paper container 1 to sterilize the paper container 1, and is used when performing aseptic filling.

In order to perform this aseptic filling, the paper container bottom assembly device 20 and the paper container filling and sealing device 30 are housed in an aseptic 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 feeder 11 provided in a paper container supply device 10. The paper containers 1 are taken out one by one from the feeder 11 by a transfer device (not shown), expanded into a rectangular column shape, and transferred to the position S1, and then sequentially transferred horizontally to the positions S2 and S3. .

Then, as shown in FIG. 2, the rotating device (not shown) sequentially rotates and transfers it to positions 34, 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 surface of the paper container 1. 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 is pressed from the outside of the paper container 1 to apply ultrasonic vibrations. 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 thereto is rotated from the S6 position to the position 33, 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 1 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.

The paper container 1 covered by the mandrel 22 is a turret 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 l 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 container 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. be crowned.

The paper container 1 is intermittently conveyed horizontally on the conveyor 31, and the hydrogen peroxide spraying device 32 and the drying device 33.3
4. The paper container 1 is sequentially transferred to the positions of the cooling device 35 and the head-next crimp folding device 36, and the head-next crimp folding device 36 imparts a crimp to the head of the paper container 1.
is transferred to the next filling process.

When the paper container 1 reaches directly below the filling device 37, the paper container 1 is lifted to a predetermined position by an elevating device (not shown), and after being filled with a predetermined amount of contents from the filling nozzle 38, the elevating device The paper container l is then lowered to its original position and transported to the next process by the conveyor 31.

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

Here, when performing aseptic filling, the hydrogen peroxide spray device 32
, drying device 33,34 and cooling device 35 are activated.

That is, when the paper container 1 transported by the conveyor 31 reaches directly below the hydrogen peroxide spraying device 32, the lifting device (
(not disclosed), the paper container 1 is lifted to a predetermined position, and hydrogen peroxide is sprayed onto the entire inner surface of the paper container 1 from the hydrogen peroxide spraying device 32. 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 onto the inner surface of the paper container 1 from the drying devices 33 and 34, and the hydrogen peroxide that has become liquid after being sprayed is dried.Next, the paper container 1 heated by the hot air blowing is It is further transported by a conveyor 31 and cooled by a cooling device 35.

(Effects of the Invention) As described above, in the present invention, the bottom of the paper container is assembled, the contents are filled, and the head is sealed with the spout attached. By shortening the conveyor line for the assembled paper containers at the bottom and installing a spout, container loss in the event of a defect can be minimized, resulting in improved hygiene. This has the effect that a paper container with a spout can be manufactured extremely efficiently.

[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.
Figure 3 (A) is an external view of a general paper container with a spout, and Figure 3 (Sun) is an external view of the spout used in Figure 3 (A). It is. 1---Paper container 2-----One spout 3--
--------Flange 10...-Paper container supply device
11-----Feeder 12--Ultrasonic sealing 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 and pressing device 30 --- Paper container sealing and filling device 31 ---
...-Conveyor 32...-Hydrogen peroxide spray device W, 33
．． 34--Drying device 35--Cooling device 36-- Head-next curling device 37...
・-Filling device 39・・・・−・Secondary head folding device 41・−・−Head folding and pressurizing device 50−・−・−・−Sterile chamber Patent applicant Dai Nippon Printing Co., Ltd. Agent Patent attorney Atsushi Ko Nishi Diagram 2

Claims (1)

[Claims] a step of supplying a paper container having a heat-sealable adhesive layer on the inner and outer surfaces, a pouring spout attached, and a cylinder pasted; a step of assembling the bottom of the paper container on an intermittently rotating turret-like mandrel; A paper container characterized in that the steps of discharging the assembled paper container to a conveying device and assembling the head of the paper container after filling the paper container with contents on the conveying device are performed in sequence. manufacturing method.