JPS6010907B2 - Container manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a container in which a plastic film container is adhered to the inner surface of a paper container.

Conventionally, as a method of laminating a film on the inner surface of a paper container, a sheet of paper laminated with a film of polyethylene or the like has been laminated and then cut into predetermined blanks and drawn.

However, in this method, since the end surface of the paper inside the container is exposed to the liquid, the liquid enters from there, causing liquid leakage, deformation, etc. Moreover, the method of protecting the end face is laborious and complicated. The present invention aims to improve these conventional drawbacks, and includes a container made of plastic film that is adhered to the inner surface of a paper container, and the gist of the manufacturing method is as described above. Apply adhesive to the inner surface of the container of the paper container blank sheet at a predetermined position, and place the above plastic film container with the opening facing down in a drafting machine and intermittently apply a heated press mold for carton making to the container closing part. By inserting iron into the container, paper containers with plastic film containers attached to the inner surface can be manufactured continuously. Next, the method of the present invention will be explained in more detail with reference to the drawings. FIG. 1 is, for example, a developed view of a blank sheet (A) of a paper container A that extends upward from the bottom. 1 is a bottom plate, 2 is a side plate, and 3 is a flap to be attached to the inside of the container.

FIG. 2 is a sectional view of a product in which a plastic film container B is attached to the inner surface of the paper container A shown in FIG. Since the present invention combines the paper container drafting process and the process of manufacturing the container from plastic film at the end thereof, the paper container drafting process will be explained first. FIG.
) are housed in a stacking support frame 4 and supported by claws 5. The spacing between the claws 5 is determined by the suction arm 6 when the blank sheet (A
) is bent by being sucked downward, and the blank sheet (A) is removed from the nail 5, placed on the compere 7, and transferred to the gluing device. Glue is applied over the entire surface of the blank. However, pattern coating may be applied over the entire surface. The suction arm is equipped with a suction disk 9 at the upper end of the suction pipe 8, and is connected to a link 12 through connecting rods 10 and 11. A roller 13 is provided in the middle of the link 12, and the suction arm is reciprocated through a timing shaft 14. Do exercise. Next, Planks (A) was sucked out by the suction disk 9.
is received, transferred to the timing chain 17 by rubber rollers 15 and 16, and pasted by the pasting machine 24. The timing of gluing is performed by a timing shaft 14. A plastic film container B to be pasted inside the paper container A is sent from the opposite direction to the above gluing process, but this container B is attached to the mold 1 that is in close contact with the inner surface of the paper container B.
8, while the plastic film 20 is drawn off from the take-up roll 21. The timing chain 19 is connected by sprocket gears 22 and 23. film 20
The film is dispensed onto the mold 18, softened by the heater 25, and then molded into the air pipe 2 by the compressed air forming device 26.
The film softened by feeding compressed air from 7 is mold 1.
8 and then cut into a predetermined size at the entrance of the plastic container B by a trimming cutter 28. In this way, container B is sent to a predetermined position in a drafting device on another line. In other words, paper container blank sheets (
When the plastic film container B is placed directly below the center of the plastic film container B with its opening □ facing down, the mold 31, which is moved up and down by the rack 29 and pinion 30, inserts iron into the closing portion of the plastic container mentioned above. and push upward.
Since this mold 31 is always heated to an appropriate temperature, the plastic film container B is brought into close contact with the inner surface of the paper container A by the adhesive applied to the inner surface of the paper container A, as shown in the sectional view of FIG. The containers thus made are stacked upwardly by the guide 32 in the form of a press using the wide part 32' of the guide 32 in the drafting machine. In this way, containers can be produced continuously in large quantities;
In some cases, the blank sheets (A) may be stacked together with glue, and the plastic film containers B may also be stacked, and if necessary, both may be adhered in a drafting machine.

In this case, the container B is cut at a predetermined point by a cutter 28 (see FIG. 3) and a die 33 that pushes up from below, as shown in the cross-sectional diagram of FIG. You can also accumulate them. In the method of the present invention, the strength of the paper and the type and thickness of the plastic film can be appropriately selected as required, and continuous mass production can be carried out.

[Brief explanation of drawings]

FIG. 1 is a developed view of a blank sheet of an example of a paper container used in the present invention, FIG. 2 is a cross-sectional view of an example of a container made by the method of the present invention, and FIG. 3 is a manufacturing of the container of the present invention. FIG. 4 is a cross-sectional view of an apparatus capable of cutting and stacking plastic film containers according to the present invention. 1... Bottom plate of paper container, 2... Side plate, 3... Flap, 4... Planks support frame, 5... Claw, 6... Suction arm, 7...
Conveyor, 8...Suction pipe, 9...Suction board,
10, 11...Connected lot, 12...Link,
13... Colo, 14... Timing shaft,
15, 16... Receiving rubber roller, 17... Timing chain, 18... Model, 19...
Transfer timing chain, 20... Plastic film, 21... Winding roll, 22, 23... Sprocket gear, 24... Gluing machine, 25... Heater, 26... Compressed air molding device, 27... Air pipe, 28... Trimming cutter, 29...
Rack, 30... Pinion, 31... Model, 32... Guide, 32r... Wide hem part, 33... Model, 34...
・・Guide, A・・Paper container, (A)・・・・
・Paper container blank sheet, B...Plastic film container. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. When manufacturing a container in which a plastic film container is adhered to the inner surface of the paper container, the end of the step of applying adhesive to a predetermined position on the surface of the blank sheet of the paper container that will become the inner surface of the container; The paper container blank sheet is placed under the guide, and the paper container blank sheet made of the plastic film is placed under the blank sheet. Position the container with the opening facing down, and intermittently insert a box-making mold into the opening of the container and push it upward, and use the wide part of the guide to make a paper container from the blank sheet. A method of continuously manufacturing paper containers in which a plastic film container is tightly adhered to the inner surface while cooling.