JPH0239931Y2 - - Google Patents

Abstract

A carton formed from board or a similar material, primarily intended for detergent powder. The carton is erected by folding from a blank, the particular feature being that powder tightness and efficient use of board are achieved by arranging for the closure to be formed by sandwiching a plain flap hinged to a side panel between a moulded flap, also hinged to a side panel and a moulded flap hinged to an end panel.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dust-proof paper box formed from paperboard or the like.

DE-A-2260766 relates to a paper box in which one of the two flaps hinged to the side plate is folded along the length of the side plate in close proximity to the hinge line. Such a folding process has to be carried out in a closed space, so it has the disadvantage that it is similar to deep drawing and becomes a particularly difficult process when the paperboard becomes stiffer. The two anti-flour flaps which are folded over said one flap, the first flap, are then wasted as they have to be cut out in the area of the molding line. A molding line corresponding to the first flap must also be applied to the outer flap.
In this case, the first flap must be in the opposite direction, which complicates the process.

The inventor of the present application has devised a foldable powder-leakage-preventing paper box that is at least as good as the powder-leakage-preventing property of the paper box described in West German Publication No. 2260766.

That is, according to the invention, a first side flap is hinged to a side plate of the box, a second flap is hinged to another side plate of the box, a first end flap is hinged to an end plate, and the second flap is hinged to another side plate of the box. A powder leakage prevention box having a second end flap hinged to an end plate of the powder leakage prevention box, the first side flap and the second side flap partially overlapping each other; A first molding line is press-molded on the second side flap at a position spaced apart from the side plate bending line of the other side plate, and the first end flap and the second end flap are an extension of the side plate bending line. a press-formed second forming line having a fold line on the line and extending in the same direction as the fold line and offset from the fold line, the first end flap and the second end flap The flap is bent along the bending line and the second molding line provided for each end flap, and the second molding line is provided on the first end flap and the second end flap. A third molding line is provided that is press-molded so as to extend outward from the line at right angles, and the first molding line, the second molding line, and the third molding line are all pressed. When the box is assembled, the longitudinal edge of the first side flap touches the first molding line and the third molding line, and the first side flap touches the second side flap. A powder leakage prevention box is provided, which is sandwiched between a flap, the first end flap, and the second end flap.

According to this construction, the two side flaps hinged to the side panels of the box can be short enough to overlap only slightly, and these flaps are preferably of short type. Furthermore, the above-mentioned pattern lines can be relatively easily applied to a blank (cardboard) for forming a dust-proof paper box. A molding line is a line used to create linear steps on thick paper such as cardboard by applying pressure using a press or die. Note that the press-molded portion in this specification refers to one portion from the above-mentioned molding line that is lower than the other portion due to pressure.

According to the invention, the first end flap and the second end flap are hinged along the entire length of the end plate;
Both end flaps can be folded along a second forming line that is offset from the same line as the folding line. Due to the positional deviation between the bending line and the second molding line, the flap is positioned flat with the first side flap and the second side flap interposed therebetween.

Next, embodiments of the present invention will be described with reference to the drawings.

Please refer to FIG. Instruction number 1 is a developing material paper (blank) for powder leakage prevention paper boxes. The expanded material paper for the powder leakage prevention paper box has two side plates 2 and 3 and two end plates 4 and 5. The top and bottom first side flaps 6,7 are hinged to the side plates along side plate fold lines 8,9. Two second side flaps 12 and 13 are hinged to the side plate 3 along the side plate bend lines 10 and 11, and these two second side flaps 1
2 and 13 are press-molded so that a step is obtained along the first molding lines 14 and 15. a second side flap 1 remote from the side plate fold lines 10, 11;
The outer portions 2 and 13 are press-molded toward the front side as seen in the drawing, centering around the first molding lines 14 and 15.

The two end plates 4, 5 each have two first end flaps, namely dust-proof flaps 16, 17, and second end flaps, namely dust-proof flaps 26, 27.
and is provided. These first end flaps and second end flaps are at the bending lines 18, 19;
It is hinged to the corresponding end plate via 28, 29. Bending lines 18 and 28 are side plate bending lines 10
The bending lines 19 and 29 are extension lines of the side plate bending line 11.

The above-mentioned bending lines 18, 19; 28, 29 are
each with a first end flap 1 perpendicular to said fold line;
6,17, terminating in a third profile line 20,21; 30,31 extending from the outer edges of the first and second end flaps approximately in the middle of the second end flaps 26,27. These third molding lines 20, 21;
30, 31 are each bending line 18, 19; 28, 2
9 and extending somewhat offset from each corresponding fold line only in the same direction as each corresponding fold line;
3; Continuing from 32 and 33. An adhesive flap 34 is hinged to the end plate 5, and the end plate 5 is attached to the flap 3 with adhesive.
4 to the side plate 2.

FIG. 2 is a cross-sectional view of a completely assembled and sealed paper box to prevent powder leakage, with the two side plates 2 and 3 being cut vertically. The powder leakage prevention box is sealed as follows.

First, the innermost layer of the box has first end flaps 16, 17 and second end flaps 26, 27 at the top and bottom of the box.
It is formed by folding the inside of the box. The first side flaps 6, 7 are then connected to the deeply pressed surfaces of the first end flaps 16, 17 surrounded by the second and third scoring lines 22, 23 and 20, 21, respectively. The two end flaps 26, 27 are placed on the deeply pressed surfaces surrounded by the second molding lines 32, 33 and the third molding lines 30, 31. Next, the second side flaps 12, 13 are molded in such a way that the deeply press-molded portions on the outside of the first molding lines 14, 15 are located on the first side flaps 6, 7. Overlap.
In this case, the portions of the second side flaps 12, 13 surrounded by the side plate bending lines 10, 11 and the first molding lines 14, 15 are partially surrounded by the first end flaps 1.
6, 17 and overlap the second end flaps 26, 27. The depth of each stamped portion is approximately half the thickness of the first side flaps 6,7.

From the paper pattern of this design, a powder leakage-proof paper box that can substantially prevent powder leakage can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a developed view of a material paper for a powder leakage prevention paper box according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of a powder leakage prevention paper box made by folding the material paper of FIG. 1. 2, 3... Side plate, 4, 5... End plate, 6, 7...
First side flap, 12, 13... Second side flap, 16, 17... First end flap, 26,
27...Second end flap.

Claims (1)

[Claims for Utility Model Registration] The first side flap 6 hinged to the side plate 2 of the box;
7. Second side flap 1 hinged to side plate 3 of the box
2, 13, a first end flap 16, 17 hinged to the end plate 4, and a second end flap 26, 27 hinged to the end plate 5; 7, and in the powder leakage prevention box in which the second side flaps 12 and 13 partially overlap each other, the second side flaps 12 and 13 include the side plate bending line 10 of the side plate 3, First molding lines 14, 15 are press molded at positions spaced apart from the side plate bending lines 10,
On the extension line of 11, bend lines 18, 19; 28,
29 and the bending line 18,1
9; second molding lines 22, 23; 32, 33 which are pressed and extend in the same direction as 28, 29 and offset from the bending lines 18, 19; 28, 29;
, and the first end flaps 16, 17 and the second end flaps 26, 27 are connected to the bending lines 18, 19; 28, 29 and the second molding lines 22, 23; 32, 33, respectively. The first end flaps 16, 17 and the second end flaps 26, 27 are bent at right angles outwardly from the second molding lines 22, 23; 32, 33. A third molding line 20, 21; 30, 31 is provided which is press-molded so as to extend from the first molding line 14, 15 and the second molding line 2.
2, 23; 32, 33, and the third molding line 2
0, 21; 30, 31 are all formed by pressing, and when the box is assembled, the longitudinal edges of the first side flaps 6, 7 are aligned with the first mold line 14,
15 and the third molding line 20, 21; 30, 31
The first side flaps 6, 7 are in contact with the second side flaps 12, 13, the first end flaps 16, 17, and the second end flaps 26, 27.
A powder leakage prevention box characterized by being sandwiched between.