JPH0672425A - Packing container - Google Patents

Abstract

PURPOSE:To form a three-dimensional packing container by folding a sheet. CONSTITUTION:First outward folds 12, first inward folds 13 and second inward folds 14 are made in a sheet 10 along both side edges 11. The sheet 10 is folded along the folds 12, 13 and 14 in the specified directions so that a groove-like shape is formed between horizontal flanges 12 on both sides. Second outward folds 16 and third inward folds 17 are made along both end edges 15, and triangular inward folds 20 and outward folds 21 are made at both ends of the folds 16 and 17. Both edges of the sheet 10 are folded into triple-layers by the first outward folds 12 and the first inward folds 13, and the first inward folds 13 vanish, so that sheet 10 is formed into a three-dimensional shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging container, that is, a packaging tray made up of a sheet of a square film or paper, and in particular, a belt-shaped sheet while being conveyed in the longitudinal direction. A tray suitable for forming one after another.

[0002]

2. Description of the Related Art A conventional packaging tray is formed by squeezing a film or the like into a mold.

[0003]

However, the conventional forming mold has a drawback that the forming mold is expensive and a great economic burden is required to form many kinds of trays.

[0004]

In view of the above points, the present invention provides a tray which is inexpensive to form and can be formed with high efficiency, and inside of both side edges 11 of a rectangular sheet 10. A first outer fold line 12 formed in parallel with the both side edges, and two first inner fold lines 13 formed in parallel with the outer fold line toward the center of the sheet inside the outer fold lines. The second inner fold line 14 and the first inner fold line 13, inside the both end edges 15 of the sheet,
Second outer fold line 16 formed between 13 in parallel with both end edges 15
And, inside the second outer fold line, the second inner fold line 1
The third inner fold line formed in parallel with the both end edges 15 and 15 between 4, 14 and one of the third inner fold lines and the both ends of the second outer fold line form one hypotenuse. Yamagata inner fold line 20 formed in a mountain shape over both first outer fold lines 12
And the third outer bent line 21 formed on the bottom side of each of the chevron-shaped inner bent lines 20, and the overlapping portions of the four corners of the sheet are bonded together.

[0005]

EXAMPLE As shown in FIG. 1A, first outer fold lines 12 and 12 are formed in parallel with the both side edges 10 inside the both side edges 11 of a sheet 10 cut in a square shape. The inner side and the outer side are, as viewed from the direction in which the sheet 10 is viewed, the front side is the inner side and the opposite side is the outer side, and the first inner folding line 13 and the second inner folding line 13 are inside the first outer folding lines. 14 and 14 are formed in parallel with the first outer line 12. Further, second inner folding lines 16 and 16 are provided between the first inner folding lines 13 and third inner folding lines 17 and 17 are provided between the second inner folding lines 14 and 14 on the inner sides of both end edges 15 of the sheet. Yamagata-shaped inner folding line 20 is formed by extending the first outer-folding line 12 so as to form one hypotenuse between both ends 18 of both the third inner-folding lines and both ends 19 of both the second outer-folding lines. And the third outer fold line 21 is formed on the bottom side of each of the angled inner fold lines. Each folding line for the sheet can be formed by a roll having X-axis and Y-axis while the belt-shaped sheet is being conveyed. Therefore, when the folding lines are bent in the respective directions, a three-dimensional container as shown in FIG. 1B is formed. That is, as shown in FIG. 3, the central portion of the sheet is bent in a groove shape by two second inner fold lines 14, and a flange 22 is formed by the first outer fold line 12 on both sides thereof. In addition, as shown in B of FIG.
The first inner fold line 13 is originally formed between the second inner fold line 14 and the second inner fold line 14, but the first inner fold line is formed by forming the triangular surface 22 surrounded by the Yamagata inner fold line 20 and the third outer fold line 21. 13 is stretched flat. However, at both ends of the sheet, the sheet surface is tripled by bending the first outer fold line 12 and the first inner fold line 13, so that a three-dimensional tray can be formed by welding or adhering this triple portion. Flanges 22 and 23 having steps can be formed on the peripheral surface, and a pressure sensitive adhesive is applied to the upper surfaces of the flanges to attach a lid member 24 made of a transparent film.

[0007]

[Effect] The container of the present invention can be formed by forming various folding lines on a sheet and folding the sheet three-dimensionally along these folding lines. Only by changing each folding line as compared with the conventional molding container. Can be used to form various types of containers, which is more economical than preparing various types of molds.

[Brief description of drawings]

FIG. 1A is a development view of a sheet forming a container.

FIG. 1B is a perspective view of the container.

[Figure 2] Front view of the container

3 is a sectional view taken along line IV-IV in FIG. 1B.

[Explanation of symbols]

10 ... Sheet 11 ... Both side edges 12 ... First outer fold line 13
… First internal fold line 14… Second internal fold line 15… Both ends 16
… Second outer fold line 17 ... Third inner fold line 18, 19 ... Both ends
20 ... Yamagata Inner Line 21 ... Third Outer Line.

Claims (1)

[Claims] 1. A first outer fold line 12 formed inside each of both side edges 11 of a rectangular sheet 10 in parallel with the both side edges.
Further, two first inner fold lines 13 and two second inner fold lines 14 respectively formed inside the outer fold lines toward the center of the sheet and in parallel with the outer fold lines, and inside both end edges 15 of the sheet. At the second outer fold line 16 formed between the first inner fold line 13 and 13 in parallel with the both end edges 15, and between the second inner fold line 14 and 14 at the both end edges 15 inside the second outer fold line. The third inner fold line formed in parallel with 15 and the first outer fold line 12 and the second outer fold line are formed in a mountain shape so as to form one hypotenuse between both ends of the both third inner fold lines and both ends of the second outer fold line. A packaging container that is formed three-dimensionally by forming the Yamagata inner fold line 20 and the third outer fold line 21 formed on the bottom side of each of the Yamagata inner fold lines 20, and adhering the overlapping portions of the four corners of the sheet.