MXPA03007221A

MXPA03007221A - Cut sheet and packet, in particular for cigarettes.

Info

Publication number: MXPA03007221A
Application number: MXPA03007221A
Authority: MX
Inventors: Lutzig Bodo-Werner
Original assignee: Philip Morris Prod
Priority date: 2001-02-13
Filing date: 2002-02-13
Publication date: 2005-02-14
Also published as: AU2002244715B2; AU2002244715C1; EP1361987B1; ES2229110T3; JP3975169B2; PT1361987E; KR100822831B1; DE50201357D1; CA2437936C; BG65017B1; KR20040004526A; JP2004526439A; CA2437936A1; CN1254420C; ATE280103T1; HK1063769A1; EA004819B1; ZA200306263B; UA73414C2; EP1361987A1

Abstract

The invention relates to cut sheets (10) and packets produced therefrom, in particular cigarette packets, the four longitudinal edges and four horizontal main edges thereof, all rounded off or chamfered, by means of folded regions with two or more fold lines. At the junction of various folded regions one of the mutually coincident folded regions terminates in a circular arc section of about 45 to 90 and the other in an S-curve.

Description

CUT-TO-MEASURE SHEET AND CAJETILLA, ESPECIALLY FOR CIGARS The present invention relates to a sheet cut to size as well as packs made thereof as they are used especially as packaging for cigars. Normally, cigars are presented in the market in soft or hard packaging, for example, packs with hinged lid or "hinge-lid" packs, but also in so-called rigid-soft packs without hinged lid. In hard packs it is also known to round the corners and edges in order to protect the consumer's bags. Thus, for example, German Patent DE 29 40 797 A1 describes for this purpose a pack of cigarettes, among others of the "hinge-lid" type, in which all corners and edges are rounded. However, this German patent specification does not disclose how this pack can be manufactured. In the European Patent EP 0 764 595 Al, a cigarette box of the "hinge-lid" type is described whose four main horizontal edges are beveled or rounded. For the manufacture of these edges, the corresponding sheets cut to size are also shown. This European publication also contains a reference to the United States of America patent US 2 523 251 (lines 51 to 54 in column 4 of European patent EP 0 764 595 Al), and with it, also to the combination of the rounded or beveled horizontal edges of those of the European Patent EP 0 764 595 Al with the beveled longitudinal edges of the US Pat. No. US 2 523 251. However, the indication of how these special modalities can be performed is again lacking. . It is indeed problematic to manufacture from a single sheet cut to size a pack, especially a box of flip-top cigarettes, in which all the corners as well as the longitudinal edges and the main horizontal edges are rounded or bevelled. Therefore, the objective of the present invention is to provide a sheet cut to the measure of simple production to manufacture a pack, especially a box of flip-top cigarettes, in which all the longitudinal edges and the main horizontal edges thus As the corners, they are, to the extent possible, largely rounded or beveled. The achievement of this objective is a sheet cut to the measure of folding material to form a parallelepiped packet, which is closed on at least 5 sides, in which two of the diametrically opposed main surfaces in the parallelepiped pack to form and a surface of the background that unites them, are arranged in the sheet cut to size successively in a straight line and the sides that in the parallelepiped pack to form come next to the two diametrically opposed main surfaces and the bottom surface that joins them , are formed by lateral surfaces projecting laterally from the two main surfaces, and wherein the edges of the two diametrically opposed main surfaces of the parallelepiped pack to be formed, are constituted by folding zones, characterized in that: - two folding zones coincide in the corners (preferably the lower ones) of the two principal surfaces s diametrically opposed in the parallelepiped packet to be formed, and because - of the two folding zones (preferably essentially orthogonal) that coincide, one is delimited by a circle arc segment of approximately 45 ° to 90 °, preferably 65 ° at 80 °, and the other by an "S" curve, the "S" curve adapting to the corner of the main surfaces to the circle arc segment, and because - the folding zones are formed, preferably, by respectively two or more contiguous folding lines, essentially parallel. A tailored sheet defined as above is preferred, with a first main surface with a first left and right side surface, where the upper edge of the first main surface follows a bottom surface, and the upper edge of the bottom surface follows a second main surface with a second surface left and right side, the cut-to-length sheet presents horizontal and vertical folding zones, namely a first and a second horizontal folding zone between the first main surface and the bottom surface as well as between the bottom surface and the second main surface, and a first one up to a fourth vertical folding surface between the first left side surface and the first main surface, between the first main surface and the first right side surface, between the second left side surface and the second main surface thus as between the second main surface and the second lateral surface of the cha, - in the upper corners of the first main zone, the first horizontal folding zone coincides with the first and second vertical folding zones, and in the lower corners of the second main surface, the second horizontal folding zone coincides with the third and fourth horizontal folding zone. The sheet cut to the extent described above can be produced in a simple manner by correspondingly modifying the existing machines for the production of sheets cut to size. By means of the usual folding and adhesion, a hard packing is thus obtained, which consists only of a piece of box, in which a group of cigarettes wrapped in an internal lining can be introduced. In the foregoing, the size of the box must be selected in such a way that the group of cigars sits firmly in the box and protrudes a little from the open upper end, in order to allow the consumer to open the box and extract the cigarettes. However, usually the pack will have, in addition to the box piece, a piece of lid, so that a conventional "hinge-lid" package results. In order to obtain this conventional "hinge-lid" package, the above-described custom cut sheet presents additional surfaces, namely, following the second main surface a third major surface with a third left and right side surface, following to the upper edge of the third main surface an upper side surface, and to the upper edge of the upper side surface, a fourth major surface with a left and right side surface, and wherein the cut sheet tailored presents other areas of horizontal and vertical folding, namely a third and a fourth horizontal folding zone between the third major surface and the upper side surface as well as between the upper side surface and the fourth major surface, and a fifth to eighth folding zone vertical between the third left lateral surface and the third major surface, between the third superior the main surface and the third right lateral surface, between the fourth left lateral surface and the fourth major surface as well as between the fourth major surface and the fourth right lateral surface, - in the upper corners of the third major surface, the third folding zone horizontal coincides with the fifth and sixth vertical folding zone, and at the lower corners of the fourth major surface, the fourth horizontal folding zone coincides with the seventh and the eighth vertical folding zone. Advantageously, the cut-to-measure sheet has, in addition to the surfaces described, as a complement, at the lower edges of the second left and right side surfaces, second flaps of left and right side surface, as well as, on the upper edge of the third left and right lateral surfaces, third final flaps of left and right lateral surface. These end flaps of the side surface serve to reinforce the bottom and lid of the finished pack. Preferably, at the upper edge of the fourth main surface there is a reinforcement surface, which, when manufacturing the package, adheres to the inner side of the fourth main surface and also serves to reinforce. As a folding material, the usual materials for "hinge-lid" packs can be used, for example, paper or cardboard, possibly coated, as well as plastic, plastic sheet or plastic laminate, preferably broadband paper or broadband cardboard . The fold lines can be either grooves or, preferably, notched lines and preferably extends over the entire length and width of the pack. For the production of grooves, the corresponding areas of the sheet cut to size are stamped by a corrugation body. On the opposite side there is a channel in which the cut sheet material can be pressed to measure. In the case of grooves extending parallel, according to the described procedure, a corrugated cross-section is obtained. This method is described, for example, in US Pat. No. 2 523 251 and the result is presented in FIG. 2. When folding the cut-to-length sheet processed in this manner, along the grooves the round edges are formed automatically (in the case of several grooves) or bevelled (in the case of two grooves). However, in the above it is disadvantageous that due to the inherent rigidity and the return forces of the packaging material, the adhesion for obtaining the package is problematic. Normally, the adhesion is made in the overlapping areas of the sheet cut to size, which form the side walls of the pack. Due to the rounded or beveled edges, these overlapping areas are considerably reduced in comparison with a normal pack, for example, "hinge-lid" type, so that only a limited amount of adhesive can be applied. The consequence is that mechanical production is encouraged, since more should be expected until the relatively small amount of adhesive dries well, otherwise the package will be reopened by the return forces. The above is especially marked if cardboard or broadband paper is used for the production of the package, for example, "hinge-lid" type. In the production of paper or cardboard, the material that forms the product is placed in a rapidly moving band. This has the consequence that the long fibers in the material are preferably oriented in the longitudinal direction. Depending on whether the cut-to-length sheet is subsequently cut longitudinally or transverse from the web of finished material, the long fibers in the cut-to-length sheet are arranged transverse to the longitudinal axis of the sheet cut to size (broadband) or longitudinal to it (narrow band). The transverse orientation of the fibers to the longitudinal direction of the sheet cut to the wide band measurement, produces good flexibility along the transverse axis, however, poor flexibility along the longitudinal axis. Therefore, the recoil forces for lateral adhesion are stronger than in the case of narrow-cut tailored plies, in which, due to the exchanged position of the long fibers in the material, the conditions are exactly inverse On the other hand, however, for packets with a lid, preferably cut-to-length broadband sheets are used, since they favor the stability of the lid (non-inclined closure)., difficult detachment of the lid), the stiffness of the pack thanks to a greater resistance in the transverse direction, and the flat constitution of the pack, that is, a bulge as small as possible of the pack, in comparison with the use of materials of Narrow band. Thanks to the use of notched lines as opposed to grooves, the return forces are surprisingly and considerably reduced, so that broadband materials can be used without problems and quickly for the production of packs, without due to the lower surface that is available, problems arise in the adhesion of the pack. For the production of notched lines, the thickness of the material forming the package is reduced by means of a notching knife. For this purpose, the cut-to-size sheet is placed on a smooth surface and worked with a notching knife, so that, in addition to compression, material removal can also occur. Depending on the shape of the notch blade, a cross section in the form of a "v" or "u" is obtained, for example. Since, unlike the procedure for making grooves, the bearing surface has no channels in the area opposite the notch blade, but rather, a smooth area, a thickness reduction occurs and not, as in the case of the grooves, a deformation without reduction of thickness. The degree of thickness reduction depends on the material used and the area of folding involved. The notched lines of vertical folding areas are formed by a thickness reduction of the paper or cardboard from 10 to 80%, preferably from 30 to 70%, especially from 40 to 60% and, for example, from approximately 50%; the notched lines of horizontal folding areas by reducing the thickness of the paper or cardboard from 10 to 15%, preferably from 20 to 40%, for example 30%. The notched lines are also preferred for a second reason for the sheets cut to size in accordance with the invention. They have the advantage that if they are on the inner side of the finished pack, the outer side has a totally intact and unprocessed appearance and, thus, offers a better optical appearance for the consumer, which is not possible if grooves are used. . By means of the number of folding lines and their distance between them, the measure and the type of rounding can be established. Preferred, by folding zone, 6 to 8, in particular 7 folding lines, which are at a distance of approximately 1 mm from each other. When folding, you get a pack with round edges; the radius of the yield is then approximately equal to that of a conventional cigar. Two fold lines, which are at a distance of 6 to 8 millimeters, especially about 7 millimeters, are also preferred by folding zone. 1 fold is then obtained a pack with beveled edges. In favor of a uniform optical appearance of the package, it is also preferred that all the folding zones have the same number of folding lines. For the coincidence of the vertical and horizontal folding zones, it is preferred that the end of the circle arc segment and the end of the "S" curve, move away from each other orthogonally and parallel to the edges of the main surfaces , since in this way a smooth transition between the various folding zones is possible. Preferably, the circle arc segment and the "S" curve are not linked together, or they are only joined at the corner of the principal surfaces. However, in principle it is also possible that there is a union at least partial between the circle arc segment and the "S" curve, but in this case, when folding to shape the package, in the transition zone between the two different folding zones arise upsets and irregularities. It is also preferred that at least one folding zone be delimited at both ends by either a circle arc segment or by an "S" curve, as it is preferred that in all the folding areas with their two ends coincide essentially orthogonally with other folding zones, the two ends of said folding zones are delimited either by the circle arc segment or by the "S" curve. Finally, it is also preferred that all folding areas that are parallel to each other end respectively with a circle arc segment, or with an "S" curve. In all three cases, a better optical impression is produced. The production of the sheets cut to size is done in a known manner. That is, the cut-to-length sheets are unwound from strips of sheet material cut to size, which is supported on rollers, and stamped, preferably as sheets cut to the measure of wide band. Normally, there follows a working step in which the cut-to-length sheets are treated as described with a notching knife or a grooving body and, simultaneously, they are stamped and / or cut and, optionally, die-cut. . By conventional folding and adhesion on the side surfaces, the finished package, for example, of cigarettes, which normally contains a group of cigarettes wrapped in an internal coating, is then obtained mechanically. In the "hinge-lid" packs according to the invention, a usual collar piece is normally used, which, with the package open, protrudes slightly from the inner side of the front wall of the package and has a notch. , which allows access to the cigars that are in the pack. In the following, the invention is illustrated by an exemplary embodiment. They show: Figure 1, a sheet cut to size in accordance with the invention, for the production of a pack of "hinge-lid" cigarettes. Figure 2, a view of detail Y of the Figure 1. A first main surface 20 is observed, which, in the finished pack, constitutes the front wall of the pack, with its contiguous side surfaces 22 and 24. Between the first left side surface 22 and the first main surface 20, as well as between the first main surface 20 and the first right lateral surface 24, there are a first and a second vertical folding zone 90 and 91, which in this case are formed by seven notch lines 100 and having a quarter of a circle in its upper end. ? the first main surface 20 is followed by the bottom surface 30 and then the second main surface 40. Between the first main surface 20 and the bottom surface 30, there is the first horizontal folding zone 80; between the bottom surface 30 and the second main surface 40, the second horizontal folding zone 82. These two horizontal folding zones 80 and 82 are also formed by seven notched lines 100, which have at their two ends respectively a line in shape of "S". The second main surface 40, which in the finished pack constitutes the back wall of the pack, is flanked by the second left side surface 42 with the second left side surface flap 46 located therein, and by the second surface right side 44, with the second flap of right side surface 48 that is in it. Among them are a third and a fourth vertical folding zone 92 and 93. The second main surface 40 follows the third main surface 50, which corresponds in the finished package to the rear wall of the lid. The main surfaces 40 and 50 are separated by the fold line 12, around which the cap of the finished pack can be rotated. Between the third main surface 50 and the third left side surface 52 with the third left side surface flap 56 located therein, on the one hand, and the third right side surface 54 with the third right side surface flap 58 that is located on it, on the other, are the fifth vertical folding zone 94 and the sixth vertical folding zone 95. The vertical folding zones 92 and 93 as well as 94 and 95 are separated from each other by incisions, which can reach up to folding line 12 or more. The upper side of the third main surface 50 follows the lid surface 60, to which, on the other hand, the fourth main surface 70 follows. Between the third main surface 50 and the lid surface 60, the third zone is located. of horizontal folding 84; between the lid surface 60 and the third main surface 70, the fourth horizontal folding zone 86, which, in turn, like the other folding zones, is formed by seven notch lines. Around the fourth main surface 70 are grouped the fourth left side surface 72, the fourth right side surface 74 with the seventh and eighth vertical folding zone 96 and 97 that are in between, as well as the reinforcement surface 72. This surface , due to its slightly smaller dimension, it only has four notch lines 100. The vertical and horizontal folding zones coincide in the corners of the main surfaces, thus, for example, the vertical folding areas 90 and 91 with the area of horizontal folding 80 in the upper corners 21 and 23 of the main surface. In the embodiment of Figure 1, the vertical folding areas end in a quarter of a circle, which, on the one hand, smoothly becomes the upper edge of the corresponding contiguous lateral surface, and on the other, in a smooth manner. smooth, on the outer edge of the corresponding main surface. The horizontal folding zones end in "S" curves, which are converted smoothly, on the one hand, on the outer edges of the respective contiguous main surface, and on the other, of the contiguous bottom surface or upper side surface. In addition to the notch lines 100 of the various folding zones, other folding lines are observed, such as the folding line 12 between the second 40 and the third main surface, the folding lines 77 on the reinforcing surface 72 and the fold lines 55 and 45 around which the end flaps of the side surface can be rotated. To manufacture the cigarette box, the side surfaces 42 and 44 90 ° can be folded up first, and then the end flaps of the side surface 46 and 48 also 90 ° inwards. Subsequently, the lower part of the sheet cut to size 10, with the bottom surface 30 and the first main surface 20, is folded 90 ° upwards, whereby the end flaps of side surface 46 and 48 come into contact with the 30 bottom surface and adhere. If the first main surface 20 (90 °) continues to be folded, the side surfaces 22, 42 and 24, 44 are covered and can be adhered, so that the lower part of the package is finished. Similarly, the upper part, the lid, of the package is obtained, that is to say, the end flaps of side surface 56 and 58 adhere to the upper side surface 60. The reinforcing surface 72 adheres inwardly to the top side. fourth main surface 70 and then the side surfaces 52, 72 and 54, 74 adhere to each other. The notch lines 100 are thus on the inner side of the finished package and the consumer does not see them from af a. The box "hinge-lid" that is obtained with the described fold, has rounded longitudinal edges. Also the four main horizontal edges are rounded. Thanks to the coincidence of the circle arc segment and the "S" curve at the ends of the folding zones, a smooth transition is achieved between the folding zones and the eight corners of the package are rounded in this way.

The coincidence of the circle arc segment and the "S" curve is shown amplified in the detailed view of Figure 2. The vertical folding zones 91 and 93 respectively terminate in a circle arc segment of approximately 60 to 70. °; the horizontal folding zones 80 and 82, in an "S" curve. The circle arc segments and the "S" curve cover each other without joining and coincide in slides 23 and 43.

Claims

1. A sheet cut to size (10) of foldable material to form a parallelepiped packet, which is closed on at least five sides, in which two of the main surfaces (20, 40) diametrically opposed in the parallelepiped pack to form and a bottom surface (30) that joins them, are arranged in the sheet cut to size (10) successively in a straight line and the sides that in the parallelepiped for forming pack come next to the two diametrically opposed main surfaces ( 20, 40) and the bottom surface that joins them (30), are formed by lateral surfaces (22, 24, 42, 44) projecting laterally from the two main surfaces (20, 40), and where the edges of the two diametrically opposed main surfaces (20, 40) of the parallelepiped pack to be formed, are constituted by folding zones, characterized in that: - two folding zones coincide in the corners of the two surfaces diametrically opposed main (20, 40) in the parallelepiped pack to be formed, and because of the two matching folding zones, one is delimited by a circle arc segment of approximately 45 ° to 90 °, and the other by a curve in "S", the curve in "S" adapting to the corner of the main surfaces (20, 40) to the circle arc segment.

2. A sheet cut to size (10) according to claim 1, characterized in that the folding zones are formed by two or more contiguous folding lines, essentially parallel.

3. A sheet cut to size (10) according to any of claims 1 6 2, with a first main surface (20) with a first left and right side surface (22, 24), characterized in that the upper edge of the first main surface (20) follows a bottom surface (30), and the upper edge of the bottom surface (30) follows a second main surface (40) with a second left and right side surface (42, 44) , the cut-to-size sheet (10) has horizontal and vertical folding zones, namely a first and a second horizontal folding zone (80, 82) between the first main surface (20) and the bottom surface (30). ) as well as between the bottom surface (30) and the second main surface (40), and a first one up to a fourth vertical folding surface (90, 91, 92, 93) between the first left side surface (22) and the first main surface (20), between the first surface The main surface (20) and the first right side surface (24), between the second left side surface (42) and the second main surface (40) as well as between the second main surface (40) and the second right side surface (44). ), in the upper corners (21, 23) of the first main zone (20), the first horizontal folding zone (80) coincides with the first and second vertical folding zones (90, 91), and in the corners lower (41, 43) of the second main surface (40), the second horizontal folding zone (82) coincides with the third and fourth horizontal folding zone (92, 93).

4. A sheet cut to size (10) according to claim 3, characterized in that a second end flap of left and right side surface (46) follows the lower edge of the second left and right side surface (42, 44). 48).

5. A cut-to-length sheet (10) according to claim 3, characterized in that a third main surface (50) with a third left and right side surface (52) follows the upper edge of the second main surface (40). 54), the upper edge of the third main surface (50) follows an upper side surface (60) and the upper edge of the upper side surface (60) follows a fourth major surface (70) with a left side surface and right (72, 74), and wherein - the cut-to-size sheet (10) has other horizontal and vertical folding areas, namely a third and a fourth horizontal folding zone (84, 86) between the third major surface (50). ) and the upper side surface (60) as well as between the upper side surface (60) and the fourth major surface (70) and a fifth to eighth vertical folding zone (94, 95, 96, 97) between the third left lateral surface (52) and the third major surface (50), between the third major surface (50) and the third right lateral surface (54), between the fourth left lateral surface (72) and the fourth major surface (70) as well as between the fourth main surface (70) and the fourth right side surface (74), - in the upper corners (51, 53) of the third major surface (50), the third horizontal folding zone (84) coincides with the fifth and the sixth vertical folding zone (94, 95), and in the corner s (71, 73) of the fourth main surface (70), the fourth horizontal folding zone (86) coincides with the seventh and the eighth vertical folding zone (96, 97).

6. A sheet cut to size (10) according to claim 5, characterized in that a third end flap of left and right side surface (56, followed by the upper edge of the third left and right side surface (52, 54) follows). 58) and a reinforcing surface (72) follows the upper edge of the fourth main surface (70).

7. A sheet cut to size (10) according to any of claims 1 to 6, characterized in that the foldable material is broadband cardboard or broadband paper.

8. A sheet cut to size (10) according to claim 7, characterized in that the fold lines are notch lines (100).

9. A sheet cut to size (10) according to claim 8, characterized in that the notch lines (100) of the vertical folding areas are formed by a reduction in thickness of the paper or cardboard from 10 to 80%, in particular from 40 to 60%, and the notch lines (100) of the horizontal folding areas, by a reduction in thickness of the paper or cardboard from 10 to 50%, in particular from 20 to 40%.

10. A sheet cut to size (10) according to any of claims 1 to 9, characterized in that the end of the circle arc segment and the end of the curve in "S" are separated orthogonally from each other and are parallel to the edges of the main surfaces (20, 40, 50, 70).

11. A cut-to-length sheet (10) according to any of claims 1 to 10, characterized in that the ends of at least one folding zone are delimited both by the circle arc segment or by the "S" curve. "

12. A sheet cut to size (10) according to any of claims 1 to 11, characterized in that in all the folding areas that coincide orthogonally at their two ends with other folding areas, both ends of said folding areas they are delimited by the circle arc segment or by the "S" curve.

13. A sheet cut to size (10) according to any of claims 1 to 12, characterized in that all folding areas that are parallel to each other are delimited respectively by the segment of arc of circle or curve in "S".

14. A packet that can be manufactured from a cut-to-size sheet (10) according to any of claims 1 to 13.

15. A packet that can be manufactured from a sheet cut to size in accordance with claim 8 or 9, characterized in that the notch lines (100) are on the inner side of the cassette.