HK1063769B - Cut sheet and packet, in particular for cigarettes - Google Patents

Description

Cut sheet and box made therefrom, in particular for cigarettes

Technical Field

The invention relates to a cut sheet and a box produced therefrom, such as is used in particular as a cigarette pack.

Background

Cigarettes are usually introduced into the market either in hard-pack packs or in soft-pack packs, for example in hinge-lid packs or hinge-lid packs, but also in so-called hard-soft packs without a flap. In the case of hard-box packaging, it is also known to round the corners and edges in order to protect the pockets of the consumers. For example, DE 2940797 a1 describes for this purpose hinge-lid-type packets of cigarettes, etc., all corners and edges being rounded. However, this german publication does not disclose how to manufacture such a cassette.

In EP 0764595 a1 a hinge-lid-type cigarette pack is described, whose four horizontal main edges are chamfered or rounded. For the production of such ribs, corresponding cut sheets are also described. The european publication also contains a reference to US 2523251 (lines 51 to 54 in column 4 of EP 0764595 a 1) and thus also contains the rounding and chamfering of the horizontal edges of EP 0764595 a1 in combination with the chamfering of the long edges of US 2523251. But also lacks instructions on how to make this particular embodiment.

It is difficult to actually manufacture a box from a single cut piece, particularly a cigarette folding lid box in which all corners, as well as the long and horizontal major edges, are rounded or chamfered.

Disclosure of Invention

The object of the invention is therefore to prepare easily manufacturable cut sheets of paper for the production of packs, in particular cigarette folding-lid packs in which all long edges and horizontal main edges and corners are rounded or chamfered as far as possible.

The object is achieved by a cut sheet made of a foldable material for forming a cuboid-shaped box which is closed at least in 5 directions, wherein two diametrically opposite main surface regions forming the cuboid and a base surface region connecting the main surface regions are arranged in a straight line one behind the other on the cut sheet, wherein in the cuboid-shaped box to be formed the respective surfaces adjoining the two diametrically opposite main surface regions and the base surface region connecting the main surface regions are formed by side surface regions, the side surfaces projecting beyond the two main surface regions, and wherein the edges of the two diametrically opposite main surface regions in the cuboid-shaped box to be formed are each formed by folding regions.

It is characterized in that the preparation method is characterized in that,

the two fold regions meet one another at the (preferably lower) corners of two diametrically opposed main surface regions in the cuboid box to be formed; and

in two (preferably substantially right-angled) mutually converging fold regions, one is bounded by a circular arc segment of approximately 45 ° to 90 °, preferably 65 ° to 80 °, and the other by an S-curve, the angle of which to the main surface region abuts against the circular arc segment; and

each fold area is preferably formed by two or more adjacent, substantially parallel fold lines, respectively.

Preferably a cut sheet comprising a first major face region as described above, the first major face region having left and right first side face regions; wherein

The base region is connected to the upper edge of the first main surface region, and the second main surface region with the left and right second side surface regions is connected to the upper edge of the base region;

the cut sheet has horizontal and vertical fold areas, i.e. first and second horizontal fold areas between the first major face area and the bottom face area and between the bottom face area and the second major face area, first to fourth vertical fold areas between the first major face area and the first major face area on the left, between the first major face area and the first major face area on the right, between the second major face area on the left and the second major face area, and between the second major face area and the second major face area on the right;

the first horizontal fold region meets the first and second vertical fold regions at the upper corner of the first main face region; and

the second horizontal fold region meets the third and fourth vertical fold regions at the lower corner of the second main face region.

The above-described cut sheet can be produced in a simple manner by corresponding modifications to existing machines for producing cut sheets. The cut pieces are folded and glued together to produce a rigid packet consisting of only one packet portion within which a group of cigarettes can be wrapped. Typically, the case is sized so that a group of cigarettes is compactly contained in the case and protrudes slightly at the upper open end to enable the consumer to open the case and remove the cigarettes.

But the box in general has a lid portion in addition to the box portion to create a hinge-lid-box.

In order to obtain a popular hinge-lid-box, the above-mentioned cut-out sheet has an additional area, namely a third main surface area with left and right third side surface areas connected with the second main surface area, wherein an upper area is connected with the upper edge of the third main surface area, and a fourth main surface area with left and right side surface areas is connected with the upper edge of the upper area; and

the cut piece also has further horizontal and vertical fold areas, namely third and fourth horizontal fold areas between the third and upper main face areas and between the upper and fourth main face areas, fifth to eighth vertical fold areas between the left third and third main face areas, between the third and right third main face areas, between the left fourth and fourth main face areas and between the fourth and right fourth main face areas;

-the third horizontal fold region meets the fifth and sixth vertical fold regions at an upper corner of the third main face region; and

the fourth horizontal fold region meets the seventh and eighth vertical fold regions at the lower corner of the fourth main face region.

It is advantageous that the cutting sheet has, in addition to the above-mentioned areas, supplementary left and right second side area sheets at the lower corners of the left and right second side areas and left and right third side area sheets at the upper corners of the left and right third side areas. These side area panels serve to reinforce the bottom and lid of the finished box.

Preferably, a reinforcing region is provided at the upper edge of the fourth main surface region, which reinforcing region is bonded to the inside of the fourth main surface during the production of the box and simultaneously serves for reinforcement.

As foldable material, common materials can be used for the manufacture of hinge-lid-boxes, such as paper or cardboard, coated if necessary, and plastic, plastic film or laminated plastic, preferably wide-paper or wide-cardboard.

The fold lines may be either slits or, preferably, score lines and preferably extend the full length and width of the box.

In order to produce the groove, the relevant position of the cut piece is pressed in by the press groove body. On the opposite side there are grooved channels into which the material of the cut sheet can be pressed. When the grooves run parallel, a wavy cross section is produced corresponding to the method described above. Such a method is described, for example, in US 2523251, the results of which are shown in figure 2. When the cut pieces thus processed are folded together, rounded (in the case of a plurality of grooves) or chamfered (in the case of two grooves) edges of the package are automatically formed along the grooves.

But there is also the disadvantage here that the adhesion for the manufacture of the packaging box is not without problems due to the inherent rigidity and resilience of the packaging material. This typically occurs in the overlapping areas of the cut pieces that form the side walls of the box. By rounding or chamfering the edges, the overlap area is significantly reduced compared to usual hinge-lid-boxes, for example, so that only a limited amount of glue can be applied. The consequence is therefore that the mechanical production is slowed down, since it is necessary to wait for a long time until the relatively small amount of glue dries well, otherwise the box is opened again by the resilience of the material.

This problem is particularly acute if wide-width cardboard or wide-width paper is used for manufacture, such as hinge-lid-box products. In the manufacture of paper or paperboard the material forming the product is placed on a rapidly moving belt. This results in a preferred longitudinal orientation of the long fibres in the material. Depending on whether the cut piece is cut off in the longitudinal or transverse direction of the finished material web, the long fibers in the cut piece are arranged transversely to the longitudinal axis (breadth) of the cut piece or longitudinally to the longitudinal axis (breadth) of the cut piece. The orientation of the fibers transverse to the longitudinal direction of the broadloom-cut sheet results in good bending properties about the transverse axis but poor bending properties about the longitudinal axis. The resilience of the side bonds is therefore greater than that of narrow-width cut sheets, in which the properties are completely opposite, due to the long fibres in the material changing position. On the other hand, however, wide cut-out pieces are preferred for folding boxes because of the stability of the lid (no oblique closure, the lid not being easily torn off), the rigidity of the package by the stability in the transverse direction, the flat state of the package, i.e. the possible slight arching of the package, and the wide cut-out pieces are clearly advantageous compared to the use of narrow material.

By using a score line, the resilience is surprisingly reduced significantly in opposition to the groove, so that the broadsheet material can be used without problems and quickly for the manufacture of boxes, without problems in gluing the boxes because the face available is too small.

The thickness of the material constituting the package is reduced by a scoring knife for producing the score line. For this purpose, the cut pieces are placed on a smooth base and processed with a slide-mark knife, so that material can also be removed in addition to compression. Depending on the shape of the slide-mark knife, a cross-section is produced, for example in the shape of a V or U. Since the base does not have a groove on the opposite side of the scoring blade as in the method of forming the groove, but has a smooth surface, the thickness is reduced, unlike the case where the thickness is not reduced in order to form the groove.

The extent of the thickness reduction depends on the material used and the relevant fold area. The score lines in the vertical fold areas are formed by a reduction in the thickness of the paper or board of 10-80%, preferably 30-70%, particularly preferably 40-60%, for example about 50%, and the score lines in the horizontal fold areas are formed by a reduction in the thickness of the paper or board of 10-50%, preferably 20-40%, for example about 30%.

The score line is also preferred for a second reason for the cut sheet according to the invention. I.e. the score line, has the advantage that it is on the inside of the finished package, the outside being completely intact and appearing unprocessed, thus providing a better visual appearance to the consumer, which is not possible when using the groove.

The size and form of the circle can be determined by the number of score lines and their mutual spacing. Preferably, each fold area has 6 to 8, in particular 7, fold lines which are spaced apart from one another by approximately 1 mm. When folded, this results in a box with rounded edges, the radius of the circle being approximately comparable to that of a cigarette normally sold. Two fold lines are also preferably used per folding zone, the spacing between which is 6 to 8 mm, in particular 7 mm. A box with chamfered edges is produced when folded.

In order to give the box a consistent visual appearance, it is also preferred that all fold areas have the same number of fold lines.

In order to bring together the vertical and horizontal fold regions, it is preferable for the ends of the circular arc segments and the ends of the S-curves to run at right angles to one another and parallel to the edges of the main surface regions, since in this way there can be a problem-free transition between the different fold regions.

Preferably, the circular arc segments and the S-curves are not connected to each other or are connected to each other only at the corner points of the main surface region. In principle, despite the possibility of at least partial connection between the circular segments and the S-curve, when folding together to form a box, compression and irregularities occur in the transition region between the two different folding regions.

It is also preferred that at least one folding region is delimited at both ends by either a circular segment or an S-curve, and it is also preferred that in all folding regions where both ends meet the other folding region at substantially right angles, both ends of this folding region are delimited by either a circular segment or an intended S-curve. Finally, it is also preferred that all mutually parallel fold regions end in each case either in a circular arc segment or in an S _ curve. A better visual impression is produced in all three cases.

The cut sheets are manufactured in a known manner. That is to say the cut sheet is rolled off and printed, preferably as a wide-width cut sheet, from a web of cut sheet material stored on a roller. This is usually a process in which the cut sheet is treated in the manner described above with scoring knives or notching presses and is simultaneously punched and/or cut and stamped if necessary. The finished product, for example a cigarette packet, is obtained mechanically by usual folding and gluing on the sides, which usually contains a group of cigarettes wrapped inside its inner thread. In the hinge-lid packet according to the invention, the usual flange portion is also normally used, which in the opened packet projects slightly from the inside of the front face of the packet and has a slot that enables the cigarettes in the packet to be grasped.

Drawings

The invention is now described with reference to an embodiment. Wherein:

figure 1 is a cut-out piece for the manufacture of hinge-lid packets of cigarettes according to the invention; and

figure 2 is a view of detail Y of figure 1.

Detailed Description

It will be seen that the first major face region 20, which in the finished box corresponds to the front wall of the box portion of the box, has its adjacent side regions 22 and 24. Between the left first side region 22 and the first main face region 20 and the right first side region 24 there are first and second vertical fold regions 90 and 91, which are formed by 7 score lines 100 and have quarter circles at their upper ends.

The bottom surface region 30 is in contact with the first main surface region 20 at the upper side, followed by the second main surface region 40. Between the first major face region 20 and the sole region 30 is a first horizontal fold region 80, and between the sole region 30 and the second major face region 40 is a second horizontal fold region 82. The two horizontal fold regions 80 and 82 are also formed by seven score lines 100, one at each end of the lines. The second main surface area 40, which in the finished box corresponds to the rear side of the box part, has on its two sides a left second side area 42 with a second side area piece 46 on its left and a right second side area 44 with a second side area piece 48 on its right. In the middle of which are third and fourth vertical fold regions 92 and 93.

A third main surface region 50 is connected to the second main surface region 40, which main surface region 50 corresponds to the rear wall of the lid in the finished box. The major face regions 40 and 50 are separated by fold line 12 to enable the lid of the finished box to be opened and closed. Between the third main surface area 50 and the left third side area 52 with the third side area sheet 56 to its left on the one hand and the right third side area 54 with the third side area sheet 58 to its right on the other hand, there is a fifth vertical fold area 94 and a sixth vertical fold area 95. The vertical fold regions 92 and 93 and 94 and 95 are separated from each other by cuts that reach the fold line 12 or further.

A cover region 60 is connected to the upper side of the third main surface region 50, and a fourth main surface region 70 is connected to the upper side of the cover region 60. Between the third main face region 50 and the cover region 60 there is a third horizontal fold region 84 and between the cover region 60 and the fourth main face region 70 there is a fourth horizontal fold region 86, which, like all other fold regions, are also formed by 7 score lines 100.

A left fourth side region 72, a right fourth side region 74 and seventh and eighth vertical fold regions 96 and 97 and a reinforcement region 72 therebetween surround the fourth major face region 70. Reinforced area 72 defines only four score lines 100 due to its slightly smaller size.

The vertical and horizontal fold regions meet at respective corners of the major face regions, for example the vertical fold regions 90 and 91 meet the horizontal fold region 80 at the upper corners 21 and 23 of the major face regions. In the embodiment of fig. 1, the vertical fold region ends in a quarter-circle arc, which on the one hand transforms smoothly into the upper edge of the adjacent side regions and on the other hand into the outer edge of the main surface regions. The horizontal fold region ends in an S-curve which smoothly merges into the outer edges of the adjacent main surface regions on the one hand and into the outer edges of the adjacent base or upper side regions on the other hand.

In addition to the score lines 100 of the various fold regions, other fold lines can be seen, the fold line 12 between the second and third major face regions 40 and 50, the fold line 77 in the reinforced region 72, and the fold lines 55 and 45 about which the side region flaps can be pivoted.

To produce the cigarette pack, the side regions 42 and 44 can first be folded upwards by 90 °, and the side region flaps 46 and 48 next to them are then likewise folded inwards by 90 °, and then the lower part of the cut piece 10 together with the base region 30 and the first main surface region 20 is folded upwards by 90 °, so that the side region flaps 46 and 48 come into contact with the base region 30 and are stuck. The first major face region 20 is folded further (90 °) so that the side regions 22, 42 and 24, 44 overlap one another and can be glued together, so that the lower, box portion of the box is completed. The upper, lid portion of the box is made in the same manner, that is, the side section pieces 56 and 58 are glued to the upper section 60. The reinforced regions 72 are bonded inwardly to the fourth major surface region 70 and then the side regions 52, 72 and 54, 74 are bonded to each other. Score line 100 is thus inside the finished box and is not visible to the consumer from the outside.

The hinge-lid-box obtained in the above-described reciprocal folding has rounded long edges. The four horizontal major edges are also rounded. By bringing the segments of a circle and the S-curve together at the ends of the fold areas, a smooth transition is formed between the fold areas and all 8 corners of the box are rounded in this way.

The circle segment and the S-curve are shown enlarged together in the detail view of fig. 2. The vertical fold regions 91 and 93 terminate in a circular arc of approximately 60 ° to 70 °, respectively, and the horizontal fold regions 80 and 82 terminate in an S-curve. The circle segments and the S-curves are situated next to each other without connection to each other and meet at corner points 23 and 43.

Claims (15)

1. A cutting piece (10) made of foldable material for forming a cuboid box, at least 5 sides of which are closed, wherein two main surface areas (20, 40) directly opposite to each other in the cuboid box to be formed and a bottom area (30) connecting the main surface areas are arranged in the cutting piece (10) in a straight line one after the other, wherein the side surfaces next to the two main surface areas (20, 40) directly opposite to each other and connecting the bottom (30) are formed by side surface areas (22, 24, 42, 44) in the cuboid box to be formed, the side surface areas (22, 24, 42, 44) protrude at the sides of the two main surface areas (20, 40), and the edges of the two main surface areas (20, 40) directly opposite to each other in the cuboid box to be formed are formed by folding areas,

it is characterized in that the preparation method is characterized in that,

-the two folded regions meet each other at the corners of two diametrically opposite main surface regions (20, 40) in a cuboid box to be formed, and

-two mutually converging fold zones, one of which is delimited by a circular arc segment of 45 ° to 90 °, and the other by an S-curve, where the S-curve follows the circular arc segment towards the corners of the main surface area (20, 40);

the cut sheet has a first main face region (20) with left and right first side face regions (22, 24), wherein:

-a base region (30) adjoining the upper edge of the first main surface region (20), a second main surface region (40) with left and right second side surface regions (42, 44) adjoining the upper edge of the base region (30);

-the cut sheet (10) has horizontal and vertical fold regions, namely a first and a second horizontal fold region (80, 82) between the first main face region (20) and the base face region (30) and the second main face region (40), a first to a fourth vertical fold region (90, 91, 92, 93) between the left first side face region (22) and the first main face region (20), between the first main face region (20) and the right first side face region (24), between the left second side face region (42) and the second main face region (40) and between the second main face region (40) and the right second side face region (44);

-the first horizontal folding zone (80) meets the first and second vertical folding zones (90, 91) at the upper corners (21, 23) of the first main face region (20); and

-the second horizontal folding zone (82) meets the third and fourth vertical folding zones (92, 93) in the lower corners (41, 43) of the second main face region (40).

2. The cut piece (10) according to claim 1, wherein each fold area is formed by two or more adjacent, substantially parallel fold lines.

3. The cut piece (10) of claim 1, wherein the left and right second side area pieces (46, 48) are attached to the left and right second side areas (42, 44).

4. Cutting blade (10) according to one of claims 1 to 3, characterized in that a third main surface area (50) with left and right third side surface areas (52, 54) adjoins the upper edge of the second main surface area (40), an upper surface area (60) adjoins the upper edge of the third main surface area (50), a fourth main surface area (70) with left and right side surface areas (72, 74) adjoins the upper edge of the upper surface area (60); therein, the

-the cut sheet (10) has further horizontal and vertical fold regions, namely third and fourth horizontal fold regions (84, 86) between the third main face region (50) and the upper face region (60) and between the upper face region (60) and the fourth main face region (70), fifth to eighth vertical fold regions (94, 95, 96, 97) between the left third side face region (52) and the third main face region (50), between the third main face region (50) and the right third side face region (54), between the left fourth side face region (72) and the fourth main face region (70) and between the fourth main face region (70) and the right fourth side face region (74);

-the third horizontal fold region (84) meets the fifth and sixth vertical fold regions (94, 95) at the upper corners (51, 53) of the third main face region (50); and

-the fourth horizontal fold region (86) meets the seventh and eighth vertical fold regions (96, 97) at the lower corners (71, 73) of the fourth main face region (70).

5. A cut sheet (10) according to claim 4, wherein the left and right third side region panels (56, 58) are attached to upper edges of the left and right third side regions (52, 54), and the reinforcing region (70) is attached to an upper edge of the fourth major surface region (70).

6. The cutting blade (10) of claim 1, wherein the foldable material is wide cardboard or wide paper.

7. The cut piece (10) of claim 6, wherein the fold line is a score line (100).

8. The cutting blade (10) according to claim 7, characterized in that the score line (100) of the vertical fold area is formed by a reduction of the thickness of the paper or cardboard of 10-80%, and the score line (100) of the horizontal fold area is formed by a reduction of the thickness of the paper or cardboard of 10-50%.

9. The cutting blade (10) according to claim 8, characterized in that the score line (100) of the vertical fold area is formed by a reduction of the thickness of the paper or cardboard of 40-60% and the score line (100) of the horizontal fold area is formed by a reduction of the thickness of the paper or cardboard of 20-40%.

10. The cut piece (10) according to claim 1, characterized in that the ends of the circular arc segments and the ends of the S-curves extend at right angles to each other and parallel to the respective edges of the main surface area (20, 40, 50, 70).

11. The cut piece (10) according to claim 1, wherein the end of at least one fold area is delimited by a circular arc segment or an S-curve.

12. The cut piece (10) according to claim 1, characterized in that in all the fold areas meeting at right angles at their two ends with other fold areas, the two ends of these fold areas are delimited either by circle segments or by S-curves.

13. The cut piece (10) according to claim 1, characterized in that all mutually parallel fold areas are delimited by either circular segments or S-curves, respectively.

14. A box which can be produced from a cut sheet (10) according to claim 1.

15. Box that can be produced from the cut piece according to claim 7, characterized in that the score line (100) is located on the inside of the box.