EP1426298B1 - Folded box - Google Patents

Abstract

Folding box (10) comprises an outer contour unit (12) having outer wall elements (30.1-30.4) connected via outer contour fold lines, a lid unit (18), a base unit (20), and a re-closable removal opening (80). A lower inner contour unit (14) with lower inner wall elements (40.1-40.3) connected via lower inner contour fold lines (42.1, 42.2) is folded inside the outer contour unit and connected to the outer contour unit via connecting fold lines (28). A polygonal upper inner contour unit (16) having the removal opening and upper inner wall elements (50.1-50.4) connected via upper inner contour fold lines (52.1-52.3) is folded inside the outer contour unit. At least one connecting flap (60) connects the lower and upper inner contour units and is folded inside the folding box. Folding or extending of the connecting flap allows relative displacement of the upper inner contour unit towards the outer contour unit. When the upper inner contour unit slides into the outer contour unit the removal opening is closed off from the outer contour unit. When the upper inner contour unit is pulled out the removal opening is opened and the outer contour unit forms a displacement guide for the upper inner contour unit.

Description

TECHNICAL AREA

The present invention relates to a folding box with a polygonal outer contour unit closed in cross-section with outer wall elements connected via outer contours, a cover unit, a bottom unit and a resealable removal opening.

STATE OF THE ART

There are folding boxes with reclosable removal openings known. Such conditions serve to be able to remove the contents in portions as often as desired in a simple manner. As contents are, for example, liquid drops, pastilles, tablets or the like in question.

An embodiment of a known folding box with reclosable removal opening is described in EP 1 048 577 A. This document discloses a box made of a blank consisting of two parts an inner part and an outer part, which are connected to each other via a separating strip. Both parts are provided with a removal opening. By tearing off the separating strip both parts of the box are detached from each other and thereby are mutually displaceable, wherein the displaceability of the two parts is limited to each other. This makes it possible to move the two parts until it comes to the agreement of the removal openings, to finally remove the contents of the box can.

PRESENTATION OF THE INVENTION

The object of the present invention is to provide a folding carton which can be manufactured from a one-piece blank, can be transported to the filler in a flat folded state, can be erected for filling in a simple manner and is easy to handle Opening or closing the removal opening allows.

The carton according to the invention is given by the features of independent claim 1. Advantageous embodiments and further developments are the subject matter of claim 1 directly or indirectly dependent claims.

The folding box according to the invention is accordingly characterized by a polygonal lower cross-sectional contour unit lower inner wall elements connected via lower Innenkonturfaltlinien, which is present in the interior of the outer contour unit folded and connected via a Verbindungsfaltlinie with the outer contour unit, a closed cross-section, the removal opening having polygonal upper Inner contour unit with upper inner wall elements connected via upper inner contour line, which is folded inside the outer contour unit, at least one Verbindungsfaltlasche, which connects the lower inner contour unit and the upper inner contour unit and foldable into the interior of the carton, wherein the folding or stretching the Verbindungsfaltlasche a relative displacement allows the upper inner contour unit to the outer contour unit, wherein inserted in the outer contour unit upper Inner contour unit, the removal opening is closed by the outer contour unit, in the extended state of the upper inner contour unit, the removal opening is open and the outer contour unit forms a sliding guide for the upper inner contour unit.

A particularly compact embodiment is characterized in that the sum of the length of the upper and lower inner contour unit corresponds to the length of the outer contour unit.

While maintaining a compact construction and ensuring easy handling, a particularly advantageous embodiment is characterized in that the outer contour unit has at least one upwardly open edge recess, wherein a preferred development a total of two edge recesses, which are present opposite to the outer contour. By providing the edge recesses, the outer wall of the upper inner contour unit is partially accessible from the outside. To open the carton, these accessible areas are taken in a simple manner, whereby the upper inner contour unit a certain amount - depending on the length of the Verbindungsfaltlasche - can be pulled out of the outer contour unit, whereby the removal opening is released. The closing of the removal opening takes place by simply inserting the upper inner contour unit into the outer contour unit.

In order to increase the stability of the entire folding box, a particularly advantageous embodiment variant is characterized in that an outer contour adhesive flap, which is designed as a full-surface wall element, is connected to the outer contour unit via an adhesive flap folding line.

An advantageous embodiment, which has a permanent reliable function with respect to the displacement of the upper inner contour unit, is characterized in that the Verbindungsfaltlasche is connected via a first Verbindungsfaltlinie to the lower inner contour unit and a second Verbindungsfaltlinie to the upper inner contour unit, wherein the Verbindungsfaltlinien perpendicular to the Innenfaltlinien are arranged, wherein the Verbindungsfaltlasche preferably has a centrally disposed inner fold line.

With regard to a one-piece blank, a preferred embodiment variant is characterized in that the cover folding unit forming cover folding over the top side Lid fold lines are formed on the upper inner contour unit and / or that the bottom unit forming Bodenfaltlaschen are integrally formed on bottom bottom fold lines to the lower inner contour unit.

A practical embodiment variant is characterized in that the outer contour unit has a quadrangular cross section with four outer wall elements, the lower inner contour unit has a U-shaped cross section with three lower inner wall elements and the upper inner contour unit has a quadrangular cross section with four upper inner wall elements, wherein the dimensions of the Innenkontureinheiten are slightly smaller than the dimensions of the outer contour unit.

A variant which allows a particularly simple folding process, enables a simple cutting and offers a permanently reliable function, is characterized in that the width of the connecting folding tab corresponds to the width of the upper or lower inner wall element. It is particularly advantageous in a variant with quadrangular cross-section according to a preferred embodiment to provide two Verbindungsfaltlaschen, which are formed by the measure of the width of an intermediate inner wall element spaced from the upper and lower inner contour unit.

In the embodiment in which the cover unit is integrally formed on the upper inner contour unit, the cover unit is preferably glued, so that an intentional opening of the cover unit when pulling out the upper inner contour unit is not possible.

As a material for the carton cardboard can be used preferably.

The carton according to the invention offers a large number of advantages. It can be made in a simple manner from a simple carton blank. By simple folding operations with parallel or subsequent gluing, it is possible to fold the carton folding carton manufacturer in a flat transport state. In this flat, space-saving state, the folding box can be transported to the filler. After erecting then the carton, after the bottom unit has been closed, can be filled in a simple manner with contents. After closing the lid unit, the carton is ready to use. Due to the fact that the upper inner contour unit has contour dimensions which are only slightly smaller than the contour dimensions of the outer contour unit, the upper inner contour unit is clamped within the outer contour unit. To remove or insert the upper inner contour unit only this clamping effect, which is not chosen too large in practical handling, must be overcome.

Further embodiments and advantages of the invention will become apparent from the features further listed in the claims as well as by the embodiments given below. The features of the claims may be combined in any manner as far as they are not obviously mutually exclusive.

BRIEF DESCRIPTION OF THE DRAWING

Fig. 1

Perspektivische Darstellung des einstückigen Zuschnitts einer Faltschachtel mit einer Außenkontureinheit, einer unteren Innenkontureinheit und einer in gefaltetem Zustand der Faltschachtel längsverschieblichen Innenkontureinheit,

Fig. 2-5

perspektivische Darstellung der einzelnen Faltvorgänge der Faltung des Zuschnitts gemäß Fig. 1 in einen flachen Transportzustand,

Fig. 6

perspektivische Darstellung der augefalteten Faltschachtel gemäß Fig. 5 bei geschlossener Bodeneinheit und offener Deckeleinheit (Befüllungszustand),

Fig. 7

perspektivische Darstellung der Faltschachtel gemäß Fig. 6 bei geschlossener Deckeleinheit,

Fig. 8

perspektivische Darstellung der Faltschachtel gemäß Fig. 7 bei eingeschobener oberer Innenkontureinheit,

Fig. 9

schematischer Querschnitt durch die Faltschachtel gemäß Fig. 8 entlang Schnittführung I-I,

Fig. 10

schematischer Querschnitt durch die Faltschachtel gemäß Fig. 8 entlang Schnittführung II-II und

Fig. 11

schematische Draufsicht auf die aufgefaltete Faltschachtel mit teilweise ausgezogener oberer Innenkontureinheit bei durchsichtiger Darstellung der Außenkontureinheit.

The invention and advantageous embodiments and developments thereof are described in more detail below with reference to the examples shown in the drawing and explained. To be taken from the description and the drawing Features can be applied individually by themselves or to several in any combination according to the invention. Show it:

Fig. 1

Perspective view of the one-piece blank of a folding box with an outer contour unit, a lower inner contour unit and a longitudinally displaceable in the folded state of the folding box inner contour unit,

Fig. 2-5

perspective view of the individual folding operations of the folding of the blank according to FIG. 1 into a flat transport state,

Fig. 6

perspective view of the folded-up folding carton according to FIG. 5 with the bottom unit closed and the lid unit open (filling state),

Fig. 7

perspective view of the carton according to FIG. 6 with the lid unit closed,

Fig. 8

perspective view of the carton according to FIG. 7 with inserted upper inner contour unit, FIG.

Fig. 9

schematic cross section through the carton according to FIG. 8 along cutting guide II, FIG.

Fig. 10

schematic cross-section through the carton according to FIG. 8 along cutting guide II-II and

Fig. 11

schematic plan view of the unfolded carton with partially extended upper inner contour unit with transparent representation of the outer contour unit.

WAYS FOR CARRYING OUT THE INVENTION

The blank shown in FIG. 1 - in the exemplary embodiment as a carton - a folding box 10 has an outer contour unit 12 which can be folded into a rectangular cross-section. In this case, a first outer wall element 30.1, a second outer wall element 30.2, a third outer wall element 30.3 and a fourth outer wall element 30.4 are present. The outer wall elements 30.1, ... are connected to each other at their adjacent longitudinal edges by means of outer contour lines 32.1, 32.2, 32.3. All outer wall elements 30.1, ... have a length L1. The width of the first and third outer wall elements 30.1, 30.3 is B1 in FIG. 1, and the width of the second and fourth outer wall elements is designated B2 in FIG. At the left outer longitudinal edge of the first outer wall element 30.1 in FIG. 1, an adhesive flap 24 is integrally formed over an adhesive flap fold line 26 which, in terms of its dimensions, is likewise designed as a wall element with a length L1 and a width B2.

In the right longitudinal edge region as well as in the left longitudinal edge region of the outer contour adhesive flap 24, an adhesive strip 34 is present on the upper side over the length L1 in each case. These two adhesive strips may alternatively also be arranged on the rear side of the fourth outer wall element 30.4.

At the free longitudinal edge of the fourth outer wall element 30.4 in FIG. 1, a lower inner contour unit 14 is integrally formed via a connecting fold line 28. The inner contour unit has a first lower inner wall element 40.1, a second lower inner wall element 40.2 and a third lower inner wall element 40.3. The lower inner Inner wall elements 40.1, ... and thus also the connecting fold line 28 have a length L2, which corresponds in the exemplary embodiment essentially to half the length L1 of the outer contour unit 12. The lower inner wall elements 40.1, ... are connected to one another at their longitudinal edges via a first and second lower inner fold line 42.1, 42.2.

The first lower inner wall element 40.1 and the third lower inner wall element 40.3 have a width B11 which is slightly smaller than the width B1 of the first and third outer wall elements 30.1, 30.3. On the underside, bottom folding tabs 70.1, 70.2 and 70.3 are formed on bottom folding lines 71 on the lower inner wall elements 40.1, ... to form a bottom unit, the middle second bottom folding tab 70.2 having an insertion fold tab 73 integrally formed via a fold-in fold line 75.

On the first lower inner wall element 40.1 and the second inner wall element 40.3, a connecting folding tab 60, which has the width BV and the length LV, is integrally formed on the upper side via a first connecting fold line 62. In the exemplary embodiment, the width BV corresponds to the width B11 of the first or third lower inner wall element 40.1, 40.3, wherein the length LV is smaller than the width B2 of the second or fourth outer wall element 30.2 or 30.4.

On the upper side, an upper inner contour unit 16 is present via the two connecting folding tabs 60, which has a first, second, third and fourth upper wall element 50.1, 50.2, 50.3, 50.4, wherein only the first and third upper wall elements 50.1, 50.3 are connected via a second connecting fold line 64 are connected to the Verbindungsfaltlasche 60. The upper inner wall elements 50.1, ... are connected to each other via upper Innenfaltlinien 52.1, 52.2, 52.3 at their adjacent longitudinal edges.

The upper Innenfaltlinien 52.1, ..., the lower Innenfaltlinien 42.1, ... and the Außenkonturfaltlinien 32.1, ... are arranged in parallel. The width of the first and third upper wall elements 50.1, 50.3 corresponds to the width B11 of the first and third lower inner wall elements 40.1, 40.3. The width of the second and fourth upper wall elements 50.2, 50.4 corresponds to the width B22 of the second lower inner wall element 40.2.

Parallel to the first connecting fold line 62 and the second connecting fold line 64, each connecting folding tab 60 has an inner fold line 66 in the middle. The first, second connecting fold line 62, 64 and the inner fold line 66 are perpendicular to the upper or lower inner fold lines 42.1,..., 52.1, ... arranged. At the free longitudinal edge over an upper Klebefaltlinie 56 an upper adhesive flap 54 is integrally formed on the in FIG. 1 to the right projecting fourth upper inner wall element 50.4, which has an adhesive strip 58 on the underside.

On the upper side, four cover folding tabs 68.1, 68.2, 68.3, 68.4 are integrally formed on the upper inner contour unit 16 to form a cover unit 18 via cover fold lines 69, wherein the cover unit 18 is designed as a glued cover unit in the illustrated embodiment in the final state.

The upper inner contour unit 16 and thus the upper wall elements 50.1,... Have a length L3, which in the exemplary embodiment corresponds to the length L2 of the lower inner wall elements 40.1,.

The second upper wall member 50.2 has a tear-out surface 81 which is surrounded by a circular perforation. The tear-out surface 81 is offset in the region of the second upper inner fold line 52.2 toward the middle and protrudes somewhat beyond the second upper inner fold line 52.2. Around this protruding area around a sickle-shaped recess 77 is present in the wall of the third upper wall element 50.3. In the folded state of the folding box 10, the protruding region of the tear-out surface 81 can be detected in a simple manner and the tear-out surface 81 can be separated, whereby a removal opening 80 is formed. The arrangement of the removal opening 80 in the longitudinal direction is selected so that it is covered in the retracted state of the upper inner contour unit 16 of the outer contour unit 12 and is free in the extended state of the upper inner contour unit 16.

As an alternative to the adhesive strip 58, the fourth outer wall element 30.4 may have an adhesive strip 36 on its upper right edge region, adjacent to the third outer contour line 32.3, whose length substantially corresponds to the length L3 of the upper inner contour unit 16.

The removal opening 80 may also have a different circumferential contour. It can be arbitrarily arranged in the width direction, only the arrangement in the longitudinal direction must ensure the geometric conditions for opening or closing the removal opening.

The first outer wall element 30.1 and the third outer wall element 30.3 has on the upper side a part-circular, upwardly open edge recess 82. In the folded state of the folding box 10, these are Edge recesses opposite to the narrow sides of the rectangle outer peripheral contour unit 12 available. The peripheral recesses 82 ensure that the inserted upper inner contour unit 16 can be grasped manually in a simple manner for withdrawal.

In an embodiment not shown, instead of the two connecting straps 60, there is a single connecting strap which connects the second lower and upper inner wall elements 40.2, 50.2 to one another.

It is also possible to provide the fourth outer wall element 30.4 according to the dashed representation in Fig. 1 with a recess which extends to the height of the upper edge of the lower inner contour unit 14.

After the production of the blank of the carton 10 shown in FIG. 1, this is folded into a flat transport state and transported to the filler. This folding process is carried out in detail as follows:

First, the fourth upper inner wall member 50.4 is folded inwardly around the third upper inner fold line 52.3. This condition is shown in FIG. In a further folding step, the lower and upper inner contour units 14, 16 are folded inwards around the first upper inner fold line 52.1 and the first lower inner fold line 42.1. This condition is shown in FIG. In this folding process, the adhesive strip 58 is bonded to the inner wall of the first upper wall element 50.1.

In the next folding step, the inner contour units 14, 16 are folded around the third outer contour line 32.3 on the inside of the outer contour unit 12. This condition is shown in FIG. In the last folding process the prefolded area is folded around the first outer contour line 32.1 onto the first outer wall element 30.1 and onto the outer contour adhesive flap 24. In this case, the adhesive strips 34 are bonded to the outer wall of the fourth outer wall element 30.4. Now the flat transport state is reached. In this state, the folding boxes can be transported to the filler to save space. This condition is shown in FIG.

To unfold the folding box, the folding box 10 is acted upon in accordance with FIG. 5 in the direction of arrow D with slight pressure. After closing the Bodenfaltlaschen 70.1, 70.2, 70.3 with subsequent insertion of Einsteckfaltlasche 73 of the filling state shown in Fig. 6 is reached.

After filling, the cover folding tabs 68.1, 68.2, 68.3, 68.4 are folded and glued together. This condition is shown in FIG. Now, the upper inner contour unit 16 can be pushed by pressure in the direction of arrow P of FIG. 7 in the interior of the outer contour unit 12, wherein the Verbindungsfaltlaschen 60 fold into the interior of the carton 10 in this process. This folding process (arrows F) is shown schematically in FIG. 11 in a plan view, wherein the outer contour unit 12 is shown by dashed lines transparent. By folding the Verbindungsfaltlaschen 60 thus the upper inner contour 16 can be moved (arrow V in Fig. 11).

The cross-sectional outer dimensions of the upper inner contour unit 16 are dimensioned so that it is clamped within the outer contour unit 12, wherein the clamping force is so large that on the one hand prevents accidental opening and on the other hand can be overcome easily with manual operation.

The illustrated embodiment shows a carton with rectangular peripheral contour. However, other polygonal circumferential contours can be easily implemented.

For removal of filling material, the outer wall of the upper inner contour unit 16 in the region of the opposite edge recesses 82 (shown dotted in FIG. 8) is grasped and pulled out. After the first tearing out of the tear-open surface 81, the filling material can then pass out in portions through the removal opening 80. For closing, the upper inner contour unit 16 is pushed back into the interior of the outer contour unit 12 in a simple manner. There it remains releasably clamped due to the existing clamping force between the outer wall of the upper inner contour unit 16 and the inner wall of the outer contour unit 12.

Claims (14)

1. A folding box (10) having

   - a polygonal outer contour unit (12) closed in cross section and having outer wall elements (30.1, 30.2, 30.3, 30.4) connected via outer-contour folding lines (32),

   - a lid unit (18),

   - a base unit (20), and

   - a reclosable removal opening (80),

   - a bottom inner contour unit (14), regions of which are polygonal in cross section and which has bottom inner wall elements (40.1, 40.2, 40.3) connected via bottom inner-contour folding lines (42.1, 42.2) and which is present in a folded state in the interior of the outer contour unit (12) and is connected to the outer contour unit (12) via a connecting folding line (28),

   characterized in that

   - a polygonal top inner contour unit (16) which is closed in cross section, has the removal opening (80) and has top inner wall elements (50.1, 50.2, 50.3, 50.4) connected via top inner-contour folding lines (52.1, 52.2, 52.3) and which is present in a folded state in the interior of the outer contour unit (12),

   - at least one connecting folding tab (60) which connects the bottom inner contour unit (14) and the top inner contour unit (16) to one another and can be folded into the interior of the folding box (10),

   - the folding or stretching of the connecting folding tab (60) permitting a relative displacement of the top inner contour unit (16) relative to the outer contour unit (12), the removal opening (80) being closed by the outer contour unit (12) when the top inner contour unit (16) is pushed into the outer contour unit (12), the removal opening (80) being opened in the pulled-out state of the top inner contour unit (16), and the outer contour unit (12) forming a displacement guide for the top inner contour unit (16).
2. The folding box as claimed in claim 1, wherein the sum of the lengths (L2 + L3) of the top and bottom inner contour units (14, 16) essentially corresponds to the length (L1) of the outer contour unit (12).
3. The folding box as claimed in claim 1 or 2, wherein the outer contour unit (12) has at least one marginal recess (82) open at the top, so that a region of at least one top inner wall element (50.1) is accessible.
4. The folding box as claimed in claim 3, wherein there are two marginal recesses (82) on opposite outer wall elements (30.1, 30.3).
5. The folding box as claimed in one or more of the preceding claims, wherein an outer-contour adhesive tab (24) is attached to the outer contour unit (12) via an adhesive-tab folding line (26) and is designed as a full-surface wall element.
6. The folding box as claimed in one or more of the preceding claims, wherein the connecting folding tab (60) is attached to the bottom inner contour unit (14) via a first connecting folding line (62) and to the top inner contour unit (16) via a second connecting folding line (64), the connecting folding lines (62, 64) being arranged perpendicularly to the inner folding lines (42, 52).
7. The folding box as claimed in one or more of the preceding claims, wherein the connecting folding tab (60) has a centrally arranged inner folding line (66) which is arranged parallel to the connecting folding lines (62, 64).
8. The folding box as claimed in one or more of the preceding claims, wherein, on the top side, lid folding tabs (68.1, ...) forming the lid unit (18) are integrally formed on the top inner contour unit (16) via lid folding lines (69).
9. The folding box as claimed in one or more of the preceding claims, wherein, on the underside, base folding tabs (70.1, ...) forming the base unit (20) are integrally formed on the bottom inner contour unit (14) via base folding lines (71).
10. The folding box as claimed in one or more of the preceding claims, wherein

    - the outer contour unit (12) has a quadrilateral cross section having four outer wall elements (30.1, ...),

    - the bottom inner contour unit (14) has a U-shaped cross section having three bottom inner wall elements (40.1, ...), and

    - the top inner contour unit (16) has a quadrilateral cross section having four top inner wall elements (50.1, ...), the dimensions of the inner contour units (14, 16) being slightly smaller than the dimensions of the outer contour unit (12).
11. The folding box as claimed in one or more of the preceding claims, wherein the width (BV) of the connecting folding tab (60) corresponds to the width (B11) of the top and bottom inner wall elements (40.1, 50.1), respectively.
12. The folding box as claimed in claim 10 or 11, characterized in that there are two connecting folding tabs (60), which are arranged at a distance apart by the dimension of the width (B22) of an inner wall element (50.2) lying in between.
13. The folding box as claimed in one or more of the preceding claims, wherein the lid unit (18) is designed as an adhesively bonded lid unit.
14. The folding box as claimed in one or more of the preceding claims, wherein the folding box is formed from a one-piece carton blank.

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