JPS593267B2 - Taisui Seiyou Kino Seizou Hohou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a container that can be filled with foods, other articles, and even liquids.

Conventionally, box making methods, embossing methods, and in the case of containers, all have been carried out using assembly box making machines.

According to the method of the present invention, a container whose inner surface is completely covered with a plastic film can be manufactured without using an adhesive.

In addition, the structure of the inner film can be freely selected according to the requirements of the contents, and if necessary, the required content retention properties can be obtained by laminating several types of films using several extruders. It has the advantage of being able to heat-seal the lid and the container, making it possible to carry out integrated production of product packaging.

Next, the method of the present invention will be described in detail using figures.

As an example, in the case of manufacturing a container as shown in the plan view of FIG. 2A, its cross-sectional view, and FIG. 1 onto conveyor 7.

This paperboard 1 may be pre-processed with ruled lines such as 3.4° and 5.6° into the required shape.

Next, a container 2 with an open top and bottom having the required thickness is placed on the paperboard 1.
place it in the designated position.

While the paperboard 1 is moving on the conveyor 7, it is covered with a plastic film 10 extruded from an extruder 9 installed on the top of the conveyor 7, and then a vacuum suction device 11 removes the top, inside and outside of the paperboard 1 and the container 2. The sides are all sealed together with a film.

Next, the container is cut into a predetermined shape using a cutter 12, and if necessary, the container is processed with lines such as 3, 4, and 5.6.

After forming this into a box using a conventional method, the container is filled with the articles and, if necessary, a lid material is heat-sealed.

The container is not limited to a rectangular shape, and can be of any shape.

If you are unsure about the strength of the container, you can strengthen it by cutting out the container as shown in Figure 2.

In addition, the film extruded by the extruder can be selected depending on the properties of the items to be stored in the container, taking into account the protection of the contents, such as gas permeability, water resistance, oil resistance, moisture resistance, etc. If the requirements cannot be met, multiple extruders can be arranged in series to make a laminated film. Since the brim is made at the bottom, the bottom can be reinforced as shown in Figure 2B.

Such reinforcement work can be devised in various ways within the scope of conventional technology.

Also, as shown in Fig. 5, if you fold the inner lid 16 onto a mount with perforations 17 and then perform extruder processing, it will look like Fig. 4, and if you cut the mount from the perforations, it will look like Fig. 5. A container is obtained.

As described above, according to the method of the present invention, the steps from container manufacturing to article filling to lid material heat sealing can be performed continuously on a conveyor without using adhesives, so manufacturing efficiency is improved. It has the advantage that packaging costs can be significantly reduced.

[Brief explanation of the drawing]

Figure 1 is a manufacturing process diagram of the method of the present invention, Figures 2A and 2B (II-I cross section of Figure 2A) are an example of a method for reinforcing the bottom of a container, and Figure 3 is the inside of the container. The drawings in which the lid is inserted, FIGS. 4 and 5, show a method of making the inner lid shown in FIG. 3. 1... Paperboard for the bottom, 2... Container with open top and bottom, 3.4.5 and 6... Ruled line processing section, 7
... Conveyor, 8 ... Paperboard roll, 9 ... Extruder, 10 ...
...Plastic film, 11-...Vacuum suction device, 12...Cutter, 13° 14 and 1
5...Container bottom reinforcement part by punching, 16...
... Inner lid inserted into the container, 17 ... Perforated part.

Claims (1)

[Claims] 1. Place a container with a sufficient thickness and an open top and bottom at a predetermined position on a paperboard that will serve as the bottom plate with a brim, and cover the paperboard with a semi-molten plastic film extruded from an extruder. A method for manufacturing a water-resistant container comprising a container and a container that are tightly attached together.