WO1990006264A1

WO1990006264A1 - Folding carton

Info

Publication number: WO1990006264A1
Application number: PCT/CH1989/000194
Authority: WO
Inventors: Josef Tognella; Hans Müller
Original assignee: Wolfensberger Ag Kartonagen + Verpackungsdruck
Priority date: 1988-12-01
Filing date: 1989-11-06
Publication date: 1990-06-14
Also published as: DK182290D0; EP0397820A1; DK182290A

Abstract

A folding carton made from a single blank (1) has four bottom sections (8, 9, 10, 11) attached to the side walls (4, 5, 6, 7), each pair of which is adhesively secured together in such a way that the bottom sections partly cover one another. Attached to the bottom sections (8, 9, 10, 11) are flaps (14, 15, 16, 17) along fold lines, which are adhesively secured together in pairs. With the folding carton, formed after all the adhesive joints have been made, in the assembled state, the flaps form crossed inner walls to separate off compartments inside the carton. Mutually opposite bottom sections are supported by each other at the centre of the carton and, as they are together slightly longer than the length of the corresponding side wall measured parallel thereto, they lie obliquely upwards and form an inwardly curved carton base. The flaps (14, 15, 16, 17) attached along fold lines to the four bottom sections (8, 9, 10, 11), owing to suitably arranged slots in the blank by which the bottom section is reduced and the flap correspondingly enlarged, have downwardly directed peripheral projections (14a, 15a, 16a, 17a) which act as supporting feet to maintain the oblique position of the flexible bottom sections even under load.

Description

F a l t s c h a c h t e l

The invention relates to a box made from a cardboard box, which can be folded flat in the fully glued state, with a space division by inner walls, which are folded up from the inward in the collapsed state against the chess side walls and attached to the latter along the bending lines four bottom parts 'The flaps are formed, of which two neighboring ones are glued to each other and automatically take up their position as upright inner walls when the flat folded folding box is erected into the room shape.

Known folding boxes of this type have a plurality of compartments separated from one another by the inner walls for receiving sensitive products in each of the compartments, in which they are mutually protected by the inner walls. Folding boxes of this type can be designed in such a way that they already contain the bottom, side walls and all inner walls connected to one another in the flat folded state in such a way that the box straightens up from the flat state by exerting pressure from opposite sides into the spatial shape lets, where then all inner walls automatically take their position as partitions. The folding box consists of a one-piece blank, of which individual parts are glued together, 6264

that the flat shape can be created with one hand from the flat folded state. The advantage of such folding boxes is in particular that the prefabricated folding boxes can be stacked in a very space-saving manner before use for the purpose of packaging products in the folded state.

The. The object underlying the present invention was to improve folding boxes of this type in order to be able to pack products which are particularly sensitive to impact. The products should be softly supported in order to withstand vibrations occurring during transport. To achieve the object, the folding box has the features of claim 1. The resilient box oden has the advantage that shocks during transport do not have a negative effect on the contents of the box and that even in stacked, filled folding boxes there is a free space underneath each box oden and therefore there is no direct contact between the cardboard layers enclosing the contents of the box . So that the inwardly arched box bottom does not push itself flat under heavy loads, additional support feet are provided that maintain a minimum degree of arching.

Further details and advantages of the invention result from the following description and the drawings, in which various embodiments of the subject matter of the invention are shown purely by way of example. Show it:

1 shows the blank for a first embodiment of the folding box with four compartments formed by inner walls; 2 shows the folding box folded flat after gluing together before erection;

3 shows the erected folding box in a diagrammatic representation;

Fig. 4 is a plan view of the underside of the folding box;

5 shows the blank for a further embodiment of a folding box with six compartments separated by inner walls;

FIG. 6 shows the folding box manufactured using the blank according to FIG. 5 after gluing in the flat folded state;

7 shows the erected folding box in a diagrammatic representation;

8 is a plan view of the bottom surface of the folding box according to FIG. 7.

The first embodiment of the folding box is produced from a one-piece cardboard blank 1 shown in FIG. 1. In this the bending lines are shown by dashed lines, the lines 2 and 3 being perforated over the greater part of their length. The blank 1 comprises four box side walls 4, 5, 6 and 7 and bottom parts 8, 9, 10 and 11 attached to each of them along a bending line. The adhesive flap 13 attached to the side wall 7 is fixed to the free end of the side walls 4 sticks. Flaps 14, 15, 16 and 17 are attached to the bottom parts 8, 9, 10 and 11 along bending lines. The non-continuous bend line ends in an arcuate and then an oblique line ^• P 64

Section through which a section of the bottom part of the flap is slammed, so that in other words, by reducing the size of the bottom part, a free-standing edge projection 14a or 15a, 16a and 17a is formed on each flap that is folded through 90 ° 3 stands on the adjacent bottom part as a supporting foot in the erected folding box according to FIG. 3. If, for the production of the folding box, the blank 1 is folded back from the drawing plane, a zone 18 marked with crosses comes from the bottom part 9 to lie on the corresponding zone 19 marked with crosses of the bottom part 8, where these are glued together. At the same time, an adhesive flap 20 attached to the flap 15 along a bending line and marked with triangles is glued to the adjacent flap 14 in the area marked with triangles. In a corresponding manner, the area 21 marked with crosses is connected from the bottom part 11 to the bottom part 10 by gluing in the area 22 marked with crosses. Furthermore, the adhesive flap 23 attached to the flap 17 along a bending line is connected to the flap 16 in the adhesive area marked with triangles. When all the parts are pivoted backwards, the flaps are pivoted at right angles to the base parts and the base parts are pivoted at right angles to the side walls of the box, and when all the adhesive connections have been made, the folding box can be folded flat as shown in FIG. 2. Two flaps and the associated base parts are connected to each other. The two perforated lines 2 and 3 allow the box to be folded completely floor. In the case of the erected folding box, the base parts lie on top of one another, in each case partially covering the subsequent one, in such a way that the perforations 1 in 2 and 3 are covered.

The blank 1 according to FIG. 1 is designed in such a way that the length a of the base part 8 measured between the two bending lines and the length b of the base part 10 measured between the two bending lines together are somewhat greater than the length c of the side wall 5 parallel to this when the folding box is erected also for the bottom parts 9 and 11 and the side wall 6 too. This means that because of this excess length, the box bottom formed from the four bottom parts does not come to lie in a horizontal plane, but when the folding box is erected, the bottom parts in the folded state according to FIG. 2 lie inwards against the side walls in a horizontal surface of this type somewhat inclined weirdest! 1 remained, because then the corners A and B formed by two adjacent floor parts at their adhesive covering area already reached mutual support positions in the center of the floor. Of the two base parts 8 and 9, the two points labeled A come to lie one above the other and form one corner, and of the two base parts 10 and 11 the two points labeled B come to lie one above the other and form the second corner, which is at of the erected carton are both in the center of the bottom. The individual base parts are inclined from the bending line to the adjacent box side wall starting towards the middle of the box and resiliently yielding, and so that this inclination is maintained even under load, the flap attached to the end of the upstanding bottom part and functioning as a partition wall each has a support foot in the form of the edge projection 14a or 15a or 16a or 17a, which support feet are each Support on the inside of the floor part adjacent to the flap: The type of support is shown in FIG. 3. The folding box has four separate compartments due to the four flaps 14-17 which are connected in pairs. The front right corner of the box is cut away in order to show the function of the support leg obtained by reducing the base part.

The bottom of the box shown in FIG. 4 reveals that the two perforation lines 2 and 3 in the base parts 9 and 11 lie on a line connecting two corners, which move in the opposite direction when the box is pressed against one another by the two other corners to be brought into the flat folded state according to FIG. 2.

In the second embodiment of a folding box produced in FIGS. 5-8, the same principle is used to produce an inwardly curved and resilient box bottom by the small excess length of the bottom parts and mutual support thereof. In the blank shown in FIG. 5 for the production of the folding box, corresponding parts are designated with the same reference numerals as in the first exemplary embodiment. The folding box has four side walls 4, 5, 6 and 7 and base parts 8, 9, 10 and 11 attached to these along longitudinal bending lines. For the production of the folding box, 64

which can be folded flat after making all the adhesive connections according to FIG. 6 and from this state with one hand into the use form according to FIG.

7 can be aligned, is again a section 18 marked with crosses of the bottom part

9 is connected to the base part 8 in the area 19 marked by crosses by adhesive bonding. The same applies to the marked with crosses portion ^'21 of the bottom 11, which is fastened in the region 22 at the bottom portion 10 by adhesive bonding. The difference between the two exemplary embodiments is that in this folding box with flaps of a different design, six compartments separate from one another are produced as inner walls. On the bottom part

8 borders a flap 24 along a bending line, which has a slot 28 in the middle that extends almost to the bending line. A flap 25 attached to the following base part 9 along a bending line has, adjacent to the bending line, a flap base 29 of the same length and a flap part 30 projecting asymmetrically to one side. On the opposite side, the flap 25 has an adhesive tab 31 which is freely attached along a bending line and is marked with triangles and which is glued to the flap 24 in the area 32 marked with triangles. Furthermore, an edge projection 33 for the flap 25 is formed on the bending line between the flap 25 and the bottom part 9 by reducing the bottom part 9 on the middle of the bending line by means of a cut 32, which edge projection forms a supporting foot in the center of the bottom when the folding box is erected. ~, _{w Λ} ^ _. , O 90/06264

8th

The flaps 26 and 27 on the bottom parts

10 and 11 are formed in the same way. The flap 26 also has a slot 28 in the middle, next to which in the area 32 the adhesive flap attached to the flap 27 along a bending line

31 is glued. The asymmetrical flap 27 also has a Kl appeπsockel 29 and a flap part 30 projecting opposite to this on one side and an edge projection 33 formed on the bending line by a cut 32 as a supporting foot.

After all the adhesive connections have been made, a corner C is formed at the covering area of the two base parts 8 and 9, the base part 9 coming to rest on the base part 8 and these are bonded to one another in the zones 18 and 19. This corner lies with the erected folding box on the longitudinal center line through the floor. The two bottom parts 10 and

11 together form a corner D in the same way, which lies on the same line. The two corners

C and D come in the erected folding box in a mutual support position, but not directly as in the first embodiment, but via the flap base 29 extending between the two corners of the two flaps 25 and 27, which come to lie directly against each other in the erected folding box. When the folding box is erected, these two flaps 25 and 27 automatically move with the flap part 30 projecting to one side into the slot 28 of the opposite flap, so that when the folding box is erected, six compartments are created by the flaps forming the inner walls, as if 7 emerges. _{ΛΛ Λ} 90 0

The inwardly curved box bottom in turn arises from the slight excess length of the bottom parts, the longitudinal axis of the folding box being identical in this case with respect to the longitudinal axis of the folding box which is identical to the above-mentioned center line, that the length a of the bottom part 8 measured between the associated bending lines and the corresponding length b des Bottom part 10 and the length s of the flap base 29 of the flap 25 or 27 added together are somewhat larger than the length c of the side wall 5 parallel to it. The box base, which is thereby angled inwards at an angle, therefore has resilient bottom parts le inclined towards the center .and so that this inclined position is maintained even when the bottom of an overall non-rigid box is loaded, the edge projections 33 provided on the flaps 25 and 27 are located in the center of the bottom as support feet on the base or, in the case of stacked folding boxes, on the box lid of the lower one in each case Box on.

Claims

26410P claims

1. Folding box consisting of a cardboard blank, which can be folded flat in the fully glued state, with a space subdivision formed by inner walls formed by flaps attached to the sides of the box that are folded inwards against the box and attached to the bottom along the bottom lines are, of which two neighboring ones are glued to each other and automatically take up their position as upright partition inner walls when erecting the flat folded folding box in the room shape, characterized in that the glued flaps (14, 15, 16, 17) each Floor parts (8, 9, 10, 11) which are connected in pairs and overlap and are glued together in the coverage area due to the small excess length in a slightly inclined position with respect to a horizontal floor area with the corners (A, B, C, D) in the floor covering area mutual support layer ten, and the box base is thus arched inwards and that to maintain the weirdest! 1 ung of the resilient base parts (8,9,10,11) under load on at least two flaps (14,15,16,17,25,27) lower edge projections (1 a, 15a, 16a, 17a, 33) designed as support feet are. 6

1 1

2. folding shafts! according to claim 1, characterized in that the sum of the length (a, b) measured between the bending lines along the adjacent box on the one hand (4-7) on the one hand and the associated flap (14-17) on the other hand of two each other opposite bottom parts (8, 10; 9, 11) is slightly larger than the length (c) of the box parallel to it, the side wall (5, 7), and the folding box thus has an inwardly curved bottom, over which the pair connected Flaps (14,15,16,17) four separate compartments are present.

3. A folding box according to claim 1, in which the flaps (24, 26) respectively attached to two opposite base parts (8, 10) have a vertical slot (28) in the middle, next to which each of these flaps has one on the other two opposite ones Bottom parts (9, 11) are each fastened along a flap (25, 27) which is attached to a bending line and which has a flap sock which is the same length as the flap line! (29) asymmetrically to one side projecting flap part (30) with which each of these flaps (25,27) when erecting the folding shafts! automatically enters the slot (28) in the slot (28) of each of the other two flaps (24, 26) in order to form two compartments on the edge through the projecting flap part (30) of the otherwise opposing and separating two further central compartments Flaps (25, 27), characterized in that the sum of the length (a, b) of the two measured on the one hand and the associated flap on the other hand between the bending members along the adjacent box side wall 264

1 2 opposite bottom parts (8,10) with the slotted flaps (24,26) plus the length (s) of the flap base (29) of the asymmetrical flaps (25,27) of the other two opposite bottom parts (9,11) a little longer is the length (c) of the box side wall (5) parallel to it, the bottom parts connected to one another with the corners (C, D) at the cover area (18, 19, 21, 22) above the flap bases (29) are held in a mutual support position, and the folding box thereby has an inwardly curved bottom, - above which there are six compartments through the flaps (24-27).

4. Folding box according to claim 1, characterized in that the lower edge projections 14a, 15a, 16a, 17a) serving as support feet face the flaps (14, 15, 16, 17) on the side walls (4, 5, 6, 7) ¬ th flap ends _ι by reducing the bottom part assigned to the flap (8, 9, 10, 11), to form a correspondingly large section by means of a corresponding cut in the blank, and on the inside against the adjacent bottom part (8, 9, 10 , 11) are supported.

5. Folding chutes! according to claims 1 and 3, characterized in that two lower edge projections (33) of the flaps (25, 27) serving as support feet by reducing the bottom part (9, 11) respectively assigned to each of the two asymmetrical flaps (25, 27) and increasing them accordingly the flap is cut around a section of equal size in the region of the center of the bending line by means of a corresponding cutting guide (32) in order to be supported as a support foot in the center of the box bottom against a support surface.