JPH06298244A - Manufacture of packaging container - Google Patents

Abstract

PURPOSE:To provide a manufacturing method of a packaging container which is prevented from being deformed or damaged at the time of transport, and in addition, by which a large quantity of container bodies can be carried at one time. CONSTITUTION:On the external surface of side walls on four edges of a container main body, a plate piece A on which a surface material such as a paper sheet material, etc., is affixed is pressed by a roller, etc., under a flat condition, and a groove 3 is formed. After the plate piece A is bent by respective bending grooves 4, and both end parts are butted, a bottom plate 5 is fitted in a bottom plate groove 7, and at the same time, a fastening ring such as a rubber band, etc., is fitted in the groove 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a packaging container that can be used as a lunch box or the like.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Utility Model Laid-Open No. 56-7510.
9, No. 57-193611 and No. 56-1.
As disclosed in Japanese Patent No. 64913 and the like, a method of forming a container body by cutting side wall plates on four sides and then welding or adhering the four corners is known.

[0003]

However, in the above method, since the container body is made of synthetic resin foam, it is lightweight and thin, and the container itself deforms when stacked and transported in an empty state, or There was a defect such as damage. Further, there is a problem that it is bulky to carry many container bodies at one time. The present invention has been made in view of the above circumstances, and provides a method for manufacturing a packaging container that can prevent deformation and damage during transportation by a simple method and can transport a large amount of container body at one time. Is intended.

[0004]

DISCLOSURE OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and is a plate piece in which a surface material such as a paper sheet material is attached to the outer surfaces of the side walls of the four sides of the main body. A groove is continuously formed on the outer surface of the piece, each plate piece is bent and connected through the bending groove of the plate piece, and both ends of each plate piece are abutted to each other to attach the bottom plate, and at the same time, to the groove. Provided is a method for manufacturing a packaging container that constitutes a packaging container body by mounting a retaining ring such as a rubber band. Also, plate pieces on the four side walls of the main body are integrally formed with each piece of the bottom plate, grooves are provided on the outer surface of each plate piece, and each plate piece is bent to make both ends abut against each other and a rubber band or the like is provided in the groove. The present invention provides a method for manufacturing a packaging container, which comprises a packaging container body, which comprises a retaining ring.

[0005]

In the method for manufacturing a packaging container according to the present invention, the plate piece A having the surface material 2 such as a paper sheet material attached to the outer surface of the side wall portion 1 at the four sides of the container body is pressed by the roller 8 or the like in a flat plate state. Then
A groove 3 is formed, and the plate piece A is bent from each of the bent grooves 4 so that both ends thereof abut against each other, the bottom plate 5 is fitted into the bottom plate groove 7, and a snap ring 6 such as a rubber band is fitted in the groove 3. Wear it.

[0006]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The embodiment of the present invention shown in FIGS. 1 to 7 will be described. FIG. 1 shows a paper body on the outer surface of the side wall portion 1 of a container body made of a synthetic resin sheet such as polystyrene, polypropylene, polyvinyl chloride, and expanded polystyrene resin. It is a front view of plate piece A to which surface material 2 such as a sheet material is attached. Figure 2
1 is an enlarged cross-sectional view taken along the line XX of FIG. 1, and FIG.
7 is an enlarged cross-sectional view taken along line YY of FIG. FIG. 4 is a cross-sectional view showing a state in which the plate piece A is placed on the lower mold C, the upper mold B having the roller 8 is moved downward, and the groove 3 is molded. In the method for manufacturing a packaging container according to the present invention, as shown in FIG. 4, the plate piece A is placed in a flat plate state on the lower mold C and pressed by the roller 8 provided in the upper mold B to form the groove 3. Of. At this time, since the plate piece A is in a flat plate state, the work is easy to perform and the efficiency is improved, and the size of the side wall portion 1, the position of the groove 3 and the like can be easily changed, which is convenient. FIG. 5 is a perspective view showing a process in which the plate piece A formed by the above method is bent from each of the bending grooves 4, the both ends are abutted against each other, and the bottom plate 5 is fitted into the bottom plate groove 7. Here, in the process of bending each plate piece A, in order to eliminate the gap between both ends,
It may be formed in a letter shape (90 degrees). (See FIG. 3) FIG. 6 is another perspective view showing an assembling process of the packaging container in which the plate piece A of the side wall portion is integrally formed with each piece of the bottom plate 5. FIG. 7 is a completed perspective view of the packaging container obtained by the manufacturing method of the present invention. Since the packaging container formed as described above is in a flat plate state during transportation, it can be transported in a large amount at a time without being deformed or damaged. Also, when assembling the packaging container, it may be stopped in the groove 3 of the plate piece A with a retaining ring 6 having elasticity such as rubber band.
If a colored string or the like is used as the retaining ring 6, the range of application is further widened and it is convenient in combination with the surface material 2 such as a paper sheet.

[0007]

As is apparent from the above description, the present invention has the following practically excellent effects. (1) Since it can be transported in a flat plate state, it can be transported in large quantities at a time without being deformed or damaged. (2) Since the plate piece is flattened to form the groove, flow work can be performed, speed can be increased, and the plate piece is not damaged. (3) Since the packaging container can be assembled only by fastening the retaining rings such as rubber bands to the groove without welding or adhering the both ends of the side wall portion, it is useful for improving work efficiency.

[Brief description of drawings]

FIG. 1 is a front view of a plate piece.

FIG. 2 is an enlarged sectional view taken along arrow XX of FIG.

FIG. 3 is an enlarged cross-sectional view taken along the line YY.

FIG. 4 is a cross-sectional view showing a state of forming a groove.

FIG. 5 is a perspective view showing a process of forming a container body.

FIG. 6 is another perspective view showing the process of forming the container body.

FIG. 7 is a completed perspective view of a packaging container according to the present invention.

[Explanation of symbols]

 A ... Plate piece B ... Upper mold C ... Lower mold 1 ... Side wall 2 ... Surface material 3 ... Groove 4 ... Bending groove 5・ ・ ・ Bottom plate 6 ・ ・ ・ Retaining ring 7 ・ ・ ・ Bottom plate groove 8 ・ ・ ・ Roller

Claims (2)

[Claims] 1. A plate piece in which a surface material such as a paper sheet material is attached to the outer surfaces of the side walls of the four sides of the main body. A groove is continuously formed on the outer surface of the plate piece, and the bent groove of the plate piece is formed. Each plate piece is bent and connected through the plate, the bottom plate is attached by abutting both ends of each plate piece, and a retaining ring such as a rubber band is attached to the groove to form a packaging container body. A method for manufacturing a packaging container characterized. 2. A plate piece on the four side walls of the main body is formed integrally with each piece of the bottom plate, a groove is provided on the outer surface of each plate piece, and each plate piece is bent to abut both ends thereof. A method of manufacturing a packaging container, characterized in that a retaining ring such as a rubber band is attached to the container to form a packaging container body.