FR2698616A1 - Packaging blank for tubular envelope - uses panels connected by fold lines with base retaining fixture formed from pre-cut and folded lines positioned above surface of panel - Google Patents

Abstract

The package (4) uses two side panels (8) attached to the central panel (7) together with two end panels (9). Parallel fold lines (14) are arranged between the panels. One of the panels carries pre-cut lines and fold lines which form base retaining fixtures (13) for the pots (2). The fixtures are arranged as pairs or a series of pairs, and are positioned symmetrically to each other about the median longitudinal line parallel to the fold line. The fixtures are folded from the panel to a position above its top surface. USE/ADVANTAGE - Esp. for pots of milk or sugar products. Is economic and simple to manufacture. Provides a neat looking package.

Description

SIDE FOR FORMING A TUBULAR ENVELOPE
SURROUNDING 8 SIDE-BY-SIDE POTS AND PACKAGE THUS CON8TITUTED
The invention relates to a cardboard or equivalent flank intended to form a tubular envelope surrounding two jars or series of juxtaposed jars such as jars for milk or sugar composition and the pack comprising the jars and the envelope made from such flank.

 There are already known sidewalls of this type comprising several juxtaposed panels, connected to each other by longitudinal fold lines, mutually parallel, namely: a central panel, two side panels adjoining the central panel and two adjoining end panels to the two side panels.

 There are also known sidewalls of this type in which there are provided on at least one of the panels cutting lines and folding lines which delimit in said panel unfolding wedging means, capable of being projecting from to the said panel to ensure or participate in the calibration of said pots in the pack.

 In the application more particularly considered here, the pots have a frustoconical or truncated pyramid shape, the small base being lower and the large base higher. The wedging means aim to wedge the pots towards their lower part.

 In a number of embodiments of the technique, the wedging means are in the form of a beam extending longitudinally. The state of the art is thus illustrated by document EP-A-0 277 030. Other embodiments are conceivable in which there are foldable legs or in which the bottom wall of the pack is made from two panels flank glued to each other or locked to each other by a system of tabs and notches.

 The invention aims to provide a sidewall and a pack in which the wedging means are taken from the cardboard making the sidewall, without removing material and without added material. In addition, the invention aims to achieve improved wedging both longitudinally and transversely. The invention also aims to ensure that the bottom wall of the pack is produced from a single panel and not from two panels secured to each other.

Finally, the invention aims to produce a pack which has qualities of economy, ease of implementation, aesthetics and operational ease.

 To this end, a cardboard or equivalent flank is proposed first intended to form a tubular envelope surrounding two jars or series of juxtaposed jars such as jars for milk or sweet composition, of the type comprising several juxtaposed panels, connected to each other. to the others by longitudinal, parallel fold lines, namely: a central panel, two side panels adjoining the central panel and two end panels adjoining the two side panels, respectively; on at least one of the panels are provided cutting lines and folding lines delimiting, in said panel, unfolding wedging means, capable of being projecting from said panel to ensure or participate in the wedging of so-called jars in the pack including the jars surrounded by the envelope.

According to the invention,
A. it comprises on the central panel two or two sets of wedging means placed symmetrically opposite one another, on either side of a longitudinal center line of symmetry, parallel to the fold lines
B. each wedging means is limited
10) towards the median line of symmetry by a broken segment having at least one cut section and fold sections, the fold sections extending in a longitudinal direction, at least one proximal fold section being closer to the line of median symmetry that at least one distal folding section
20) opposite the center line of symmetry by a cut line, in particular generally curved, forming a cradle capable of conforming to the profile of a pot in the pack
30) on both sides, between the broken segment and the line cut by two cut transverse lines
C. Each wedging means comprises a wedging flap limited by the cut line and at least two feet, respectively proximal and distal adjoining the respective folding sections, one of the legs extending, in transverse direction, over a longer length. larger than the other, so that the two feet, the adjoining central panel and the flap constitute, seen longitudinally, a deformable quadrilateral such that, in the projecting position of the wedging means, the flap is inclined on the central panel, the line the cut being farther from the panel than the broken segment.

 The invention relates, according to another aspect, to a pack comprising two jars or series of juxtaposed pots and a tubular envelope which surrounds them, said envelope having a lower part on which the pots rest, two lateral parts placed against the lateral face of the pots and an upper part resting on the upper face of the pots, wedging means being attached to the lower part to ensure or participate in wedging the pots towards their lower part. According to the invention, it comprises on the lower part two or two series wedging means placed symmetrically opposite each other, on either side of a median, longitudinal line of symmetry, each wedging means comprising a flap which laterally embraces a pot towards its lower part, this flap being connected at the lower part of the envelope by feet, this flap being inclined upwards from the feet, on the lower part of the envelope loppe, with an angle of about 300.

The other characteristics of the invention will result from the description which follows with reference to the accompanying drawings in which
- Figure 1 is a schematic view, seen in a longitudinal direction, of a pack according to the invention, the mounted pack being shown in solid lines and, shown in dashed lines, the envelope of the pack in intermediate mounting situations
- Figure 2 is a partial schematic view in elevation on a larger scale of the central panel of the flat side showing two wedging means facing each other
- Figure 3 illustrates, in perspective, the wedging means in a partially mounted state on the right half view and in normal wedging situation on the left half view.

 The invention relates to a flank 1 of cardboard or equivalent intended to form a tubular envelope surrounding two jars or series of jars 2 juxtaposed such as jars for milk or sweet composition, in particular yogurts, white cheeses, caramel creams, etc. In the variant shown in the figures, a single layer of pot is provided. Nevertheless, the invention applies equally well in the case where the pack comprises several layers of superimposed pots.

 The pack, which is also targeted by the present invention, comprises the pots 2 as defined and the envelope produced from the side 1, this envelope then being closed and secured on itself to maintain the cohesion of the pots 2.

 The pots 2 can be completely individualized with respect to each other or be connected together, two by two or by sheet.

 The pots 2 are generally of frustoconical shape or in the shape of a pyramid with a lower part 3 of smaller dimensions than the upper part 4. In the normal position of the pack, each pot 2 has its axis 2a vertical or substantially vertical, the lower part 3 constituting the bottom of a pot while the upper part 4 constitutes its most often sealed opening.

 Such pots 2 are also generally provided, at their upper part 4, with a peripheral collar 5.

 The sidewall 1 comprises several juxtaposed panels, connected to each other by longitudinal fold lines, mutually parallel. The longitudinal direction considered here is therefore the direction perpendicular to the plane of Figure 1. This direction extends parallel to a line 6 to which we will return later.

 The sidewall 1 considered has a central panel 7, two side panels 8 adjoining the central panel 7 and two end panels 9 adjoining the two side panels 8 respectively.

 The pack thus considered comprises, for its part, a lower part 10 on which the pots 2 rest by their lower part 3, two lateral parts 11 constituted by the side panels 8 respectively and an upper part 12 resting on the upper face of the pots 2 of their upper part 4. In the pack, the envelope produced from the sidewall 1 is closed on itself, the two end parts of the sidewall being secured to one another by gluing, welding, mechanical attachment or other .

 The lower part 10 is either full, as shown, or provided with holes for receiving the pots 2.

 In the form considered, the lower part 10 is constituted by a single panel, namely the central panel 7. The upper part 12 is constituted by the two end panels 9, which are therefore superimposed and secured one to the other. other. In particular, one of the upper and outer end panels 9 covers all of the pots, going from one side panel 8 to the other, while the other end panel 9, placed below the previous one, is shorter in length and is intended essentially for attachment to the first end panel cited.

 In other embodiments, the lower part 10 is made from two panels secured to one another, in which case the upper part 12 is made from a single panel.

 The sidewall is more particularly described in relation to the variant shown in the drawings in which the lower part 10 is produced from the single central panel 7.

 On at least one of the panels - in fact on the central panel 7 - or on the lower part 10 are provided cutting lines and folding lines which delimit, in said panel 7 or in said part 10, means for timing 13.

 These wedging means 13 can be in two situations: either flat, that is to say in the same plane of the sidewall 1 when the latter is flat, before mounting; either projecting from said panel 7 or from said part 10.

 For this purpose, the wedging means 13 are unfoldable by virtue of the fold lines already mentioned.

 In their projecting position, the wedging means 13 ensure or participate in the wedging of the pots 2, in particular in their lower part 3.

 According to the invention, the central panel 7 or the lower part 10 comprises two or two sets of wedging means 13 placed symmetrically opposite one another, on either side of the longitudinal center line of symmetry 6 parallel to the lines folding 14 of the panels 7, 8, 9.

 We now refer to Figures 2 and 3, more specifically.

 Each wedging means 13 is limited towards the center line of symmetry 6, opposite the latter and, finally, on either side.

 Towards the median line of symmetry, each wedging means 13 is limited by a broken segment 15 having on the one hand at least one cut section 16 and on the other hand folding sections 17, 18. The folding section 17 is qualified of proximal and the folding section 18 qualified as distal.

 The folding sections 17, 18 therefore define folding segments extending in a longitudinal direction. The proximal folding section 17 is located at a distance from the line of symmetry 6 smaller than the distal folding section 18. The segment 15 thus forms, between the two sections 17, 18, a kind of staircase.

 In the variant shown, two pairs of folding sections 17, 18 are provided, placed on either side of a cut section 16 which can then be described as central. More specifically, the proximal folding section 17 is adjacent to the cut section 16, in fact the central cut section. The two distal folding sections 18 are then placed at the end and are adjacent to the proximal folding section 17 by virtue of transverse cutouts 19. The distal folding sections 18 are therefore spaced from the central cut section 16.

 The transverse direction in question here is a direction extending perpendicular to the longitudinal direction already defined.

 As shown in the drawings, the cut section 16 itself forms a broken line comprising firstly a proximal longitudinal sub-section 20, a distal longitudinal sub-section 21 and an inclined recess 22. The sub-section proximal longitudinal section 20 is closer to the line of symmetry 6 than the distal longitudinal sub-section 21 which is more distant therefrom. The recess 22 connects the two sub-sections 20, 21.

 As is clearly visible in Figures 2 and 3, for two wedging means 13 facing each other, the proximal sub-section 20 of one is placed opposite the distal sub-section 21 of the other. The two recesses 22 face each other and are likely to come into mutual blocking when the pack is produced.

 The foregoing description refers more particularly to the flat sidewall, the wedging means 13 being located in the same plane of the panel 7 or of the part 10.

 Opposite the center line of symmetry 6, each wedging means 13 is limited by a cut line 23 which is in particular generally curved to form a cradle capable of marrying the profile of a pot 2 of the pack.

In the case where the pots 2 have a frustoconical shape, the cut line 23 comprises at least one circular or substantially circular middle part.

 Between the cut line 23 and the broken segment 15, in particular the distal end folding section 18, are provided cut transverse lines 24.

 Each wedging means 13 comprises a wedging flap 25 and at least two feet, respectively a proximal foot 26 and a distal foot 27.

 The wedging flap 25 is adjacent to the cut line 23. The feet 26, 27 are adjacent to the respective folding sections 17, 18.

 Between the flap 25 and each foot 26, 27, a folding segment 28, 29 is provided respectively. The proximal foot 26 therefore extends between the proximal folding section 17 and the folding segment 28 while the distal foot 27 s 'extends between the distal folding section 18 and the folding segment 29. This extension of the feet 26, 27 in the transverse direction is such that one of the feet 26, 27 has a greater length than the other 26, 27.

 This arrangement is such that the two feet 26, 27, the central panel 7 or the lower part 10 and the flap 25 constitute, seen longitudinally in accordance with FIG. 1, a deformable quadrilateral such that in the projecting position of the wedging means 13, the flap 25 is inclined on the central panel 7 or the lower part 10, the cut line 23 being further from the panel 7 or part 10 than the broken segment 15.

 In the embodiment shown in the drawings, there are two pairs of feet 26, 27. The shortest foot in the transverse direction is the proximal foot 26 while the distal foot 27 is the longest.

 In the embodiment considered, the transverse length of the feet 26, 27 is in a ratio of the order of 1.3 to 1.6 approximately. The distance ratio of the folding sections 17, 18 relative to the line 6 is of the order of 2.

 In the pack thus produced (Figure 1), each wedging means 13 laterally embraces, by line 23, a pot 2 towards its lower part 3. However, the fact that the flap 25 is inclined upwards has the consequence that each pot 2 is held more upwards and over a larger periphery than usual. This results in a better setting of the pots 2.

 The inclination of the flap 25 upwards from the feet 26, 27, relative to the lower part 10 is of the order of 300 as shown in FIG. 1. In the pack produced, the two cut sections 16 with their proximal 20 and distal 21 sub-sections are nested one inside the other, the two recesses 22 cooperating to form a sort of lock wedging the pots in the longitudinal direction .

 The pack thus considered may include slots or cutouts in the fold lines 14 in particular to allow the rim 5 or the base of the pots 2 to project outwards from the pack.

 The flank which has been described previously can be produced by cutting and grooving as regards the fold lines or segments. It has the characteristic that it does not have removal of matter, nor besides of matter reported. The storage of the flat sidewalls is facilitated and this characteristic is favorable both from the economic point of view and from the point of view of the strength of the pack and finally constitutes an aid for assembly.

Claims (15)

 1. Cardboard or equivalent side intended to form a tubular envelope surrounding two jars or series of juxtaposed jars (2) such as jars for milky or sweet composition and of type comprising several juxtaposed panels connected to each other by fold lines longitudinal, mutually parallel (14), namely: a central panel (7), two side panels (8) adjoining the central panel (7) and two end panels (9) adjoining the two side panels (8), respectively ;  on at least one of the panels being provided with cutting lines and folding lines delimiting, in said panel, unfolding wedging means (13) capable of being projecting from said panel to ensure or participate the setting of said pots (2) in the pack comprising the pots (2) surrounding the envelope (4), characterized in that  A. it comprises on the central panel (7) two or two sets of wedging means (13) placed symmetrically opposite one another, on either side of a line of longitudinal median symmetry, parallel to the lines of folding ;;  B. each wedging means (13) is limited  10) towards the median line of symmetry (6) by a broken segment (15) having at least one cut section (16) and folding sections (17, 18), the folding sections (17, 18) extending in a longitudinal direction, at least one proximal folding section (17) being closer to the center line of symmetry (6) than at least one distal folding section (18);  20) opposite the center line of symmetry (6) by a cut line (23) in particular generally curved, forming a cradle capable of marrying the profile of a pot (2) of the pack;  30) on either side, between the broken segment (15) and the cut line (23) by two cut transverse lines (24);  C. Each wedging means (13) comprising a wedging flap (25) limited by the cut line (23) and at least two feet, respectively proximal (26) and distal (27) adjoining the respective folding section (17, 18), one of the legs extending in a transverse direction over a greater length than the other,  so that the two feet (26, 27), the adjoining central panel (7) and the flap (25) constitute, seen longitudinally, a deformable quadrilateral such that, in the projecting position of the wedging means (13), the flap ( 25) is inclined to the central panel (7), the cut line (23) being further from the central panel (7) than the broken segment (15).  2. Sidewall according to claim 1, characterized in that it comprises two pairs of folding sections (17, 18) on either side of a central cut section (16).  3. Sidewall according to any one of claims 1 and 2, characterized in that a proximal folding section (20) is adjacent to the cut section (16).  4. Sidewall according to any one of claims 1 to 3, characterized by two distal end folding sections (18) adjoining the proximal folding sections (17) and spaced from the central cut section (16).  5. Sidewall according to any one of claims 1 to 4, characterized in that the cut section (16) forms a broken line having a proximal longitudinal sub-section (20) closer to the center line of symmetry (6) and a distal longitudinal sub-section (21) further from this line, the two sub-sections (20, 21) being connected by a recess (22).  6. Sidewall according to any one of claims 1 to 5, characterized in that for two wedging means (13) facing each other, the proximal sub-section (20) of one is placed opposite the sub- distal section (21) on the other, the two recesses (22) facing each other and being capable of coming into mutual blocking.  7. Sidewall according to any one of claims 1 to 6, characterized in that the wedging means (13) are produced in the central panel (7) without removal of material and without added material.  8. Sidewall according to any one of claims 1 to 7, characterized in that the transverse lengths of the feet (26, 27) are in a ratio of about 1.3 to 1.6 approximately.  9. Sidewall according to any one of claims 1 to 8, characterized in that the distance ratio of the proximal and distal folding sections (17, 18) relative to the median line of symmetry (6) is l 'order of 2.  10. Sidewall according to any one of claims 1 to 9, characterized in that two sections of proximal, distal folding (17, 18) adjoining are connected by a transverse cut (19).  11. Sidewall according to any one of claims 1 to 10, characterized in that the proximal (26) and distal (27) feet are separated from the flap (25) by folding segments respectively (28, 29).  12. Pack comprising two jars or series of jars (2) juxtaposed such as pots for milk or sweet composition, and a tubular envelope which surrounds them and maintains cohesion, said envelope having a lower part (10) on which the pots rest (2), two lateral parts (11) placed against the lateral faces of the pots (2) and an upper part (12) resting on the upper faces of the pots (2), wedging means (13) being attached to the part lower (10) to ensure or participate in the setting of the pots towards their lower part (3), characterized in that it comprises on the lower part (10) two or two sets of wedging means (13) placed symmetrically opposite from each other, on either side of a longitudinal center line of symmetry (6) parallel to the fold lines (14); and by the fact that each wedging means (13) comprises a flap (25) which laterally embraces a pot (2) towards its lower part (3), this flap (25) being connected to the lower part (10) by feet (26, 27), the flap (25) being inclined upwards from the feet (26, 27), on the lower part (10) at an angle of the order of 30 ".  13. Pack according to claim 12, characterized in that the lower part (10) is constituted by a single central panel (7) while the upper part (12) is constituted by two end panels (9) superimposed, united to each other.  14. Pack according to any one of claims 12 and 13, characterized in that it comprises a single layer of pot (2).  15. Pack according to any one of claims 12 and 13, characterized in that it comprises several layers of pots (2) superimposed.