ES2295326T3 - CIGARETTE CASE AND CUTTING BLADE. - Google Patents

Abstract

The invention relates to cut sheets (100) and cigarette packets produced therefrom with rounded or chamfered edges, whereby the rounded or chamfered edges are produced by means of scored lines (180) in the cut sheet material.

Description

Cigarette pack and cut sheet.

The invention relates to a pack, in particular for cigarettes, in which one or more of the songs They are rounded or beveled, as well as cutting blades for your manufacturing.

Cigarettes are usually sold in soft container containers or hard container containers, for example, in flip-top boxes or flip-top boxes ( hinge-lid ), but also in so-called soft rigid containers without a flip-top lid. It is also known for round container beveling or beveling the corners of the boxes. Thus, EP-A-0 205 766 discloses folding lid packs, whose 4 longitudinal edges are all rounded, so that for the manufacture of cigarette packs it is necessary on the one hand less material and, on the other hand, the pack It lies better in the consumer's hand.

To get rounded or beveled edges, the cutting blade, from which the packet of is manufactured cigarettes, is provided with grooves in the areas that form the songs from the pack of cigarettes. According to US 4 955 531, the Slots can be manufactured in a way in which the cutting blade be pressed in by a grooving body at the points  concerning. On the opposite side is a channel of grooved, in which the sheet material can be pressed cut. With grooves that run in parallel, it forms manner corresponding to the procedure described a section transverse waveform. When folding the cutting blade like this processed, they are then formed automatically along the grooves (in case of several grooves) round edges or (with two slots) beveled cigarette pack.

However, here it is disadvantageous that, due to the rigidity and recoil forces of the material of the container, the glue for the manufacture of the cigarette container be problematic This is usually done in areas that are they overlap the cutting blade that form the side walls of the pack. Through rounded or beveled edges, you are overlapping areas are markedly reduced with respect to a normal flip cover box, so that you can only Apply a limited amount of adhesive material. The consequence it is therefore that mechanical production slows down, since you should wait longer until the amount relatively Scarce adhesive material is well dried, since otherwise the packet would open again through the forces back.

This is especially marked if used for the manufacture of the cardboard or paper folding lid box wide strip In the manufacture of paper or cardboard, the material that shape the product is placed on a band that moves with speed. This causes the long fibers in the material to Orient preferably in the longitudinal direction. According to if the cutting blade is cut later longitudinally or transversely of the strip of ready material, the long fibers in the cutting blade are arranged transversely to the axis longitudinal of the cutting blade (wide strip) or longitudinally to longitudinal axis of the cutting blade (narrow strip). The fiber orientation transversely to the direction Longitudinal of the wide strip cutting blade causes a good folding capacity around the transverse axis, although a bad folding capacity around the longitudinal axis. The forces of recoil for lateral adhesion are therefore stronger than with narrow strip cutting blades in which, due to the inverted position of the long fibers in the material, the Relationships are exactly reversed. On the other hand, however They are used for folding lid boxes preferably sheets of wide strip cutting, since these, with respect to the use of narrow strip materials, benefit significantly lid stability (no more inclined closure, no slight tear the lid), the stiffness of the container through a greater resistance in the transverse direction and the flat position of the container, that is, the smallest possible bulge of the container.

DE-U-71 20 716 discloses a pack of cigarettes from a cut of cardboard, composed of a base part, in which they are articulated front and back wall and to which walls are articulated lateral and flanges of union, and in which between the front wall and the side walls and between the back wall and the tabs a multitude of groove lines and / or of slit that run parallel to each other, and the corners of the base are rounded. No cardboard or paper is exposed wide strip as a material for the cardboard cutout.

It is the task of the invention therefore to avoid Disadvantages described above in the use of trimming sheets wide strip

This task is solved by a packet, manufactured from a folding material cutout sheet, in what the pack piece has a front wall of pack, a back pack wall, side walls of pack and a pack base, and one or several edges of the pack are rounded or bevelled in the folding material each time using 2 or more adjoining slit lines, essentially parallel, characterized in that the folding material it is wide strip cardboard or wide strip paper, as well as by a cutout sheet for the manufacture of the pack, that is, a folding sheet of folding material with a first field of main surface with a first side surface field left and right, as far as the upper edge of the first field a base field joins the main surface, and the edge upper of the base field joins a second surface field main with a second left lateral surface field and right, and with one or several fold area (s) with each two or several slit lines, essentially parallel, characterized in that the folding material is wide strip cardboard or wide strip paper, and why the fold area (s) is (s) arranged between one or more of the fields of lateral surface and one or both surface field (s) main or between one or both main surface fields and the base camp.

By folding the cutout sheet described above a hard container container is obtained which is It consists only of a piece of pack in which you can introduce a group of cigarettes wrapped in a paper inside corrugated cardboard cover. Usually the size of the pack is sized in such a way that the group of cigarettes sits fixedly in the pack and sticks out something at the top, open end of the pack, to enable the consumer to open the pack and extract the cigarettes

As a general rule, the pack will have no However, next to the pack piece a cover piece, which It has a front cover wall, a rear wall of lid, lid side walls and a lid top side, and it is articulated with the back wall of the cover on the back wall of the pack, so that it turns out to be a lid pack usual folding.

To get these flip-top packs usual, the cut sheet described above presents fields additional, namely, attached to the second surface field main a third main surface field with a third left and right lateral surface field, in which at upper edge of the third main surface field joins a upper lateral field, and at the upper edge of the lateral field superior a fourth main surface field with a fourth left and right lateral surface field, and in which the Clipping sheet features one or more fold area (s) with each two or several slit lines, essentially parallel which is arranged between one or several of the third and fourth lateral surface fields and the third and / or fourth main surface field or between the third and / or fourth field of main surface and upper lateral field.

Preferably, fold areas are found between the first to fourth lateral surface fields and the main surface fields first to fourth, or between the fields from first to fourth main surface and the base field and the upper lateral field.

Advantageously, the cutout sheet has apart from the fields described still in a complementary way in the lower edge of the lateral surface fields seconds left and right side surface field tabs second left and right, as well as in the upper edge of the lateral surface fields third left and right tabs of lateral surface field third left and right. These lateral surface field tabs serve to reinforce the base and the lid of the pack ready.

Preferably, it is in the song top of the fourth main surface field a field of reinforcement, which in the manufacture of the package is glued on the inner side of the fourth main surface field and serves also for reinforcement.

In the slit lines the thickness is reduced of the material that forms the container by means of a slit knife. For this, the cutout sheet is placed on a smooth base and is processed with a slit knife, so that, next to a compression, a distancing of material. Depending on the shape of the slit knife, it produces, for example, a cross section with a v or u shape Since the base does not present channels at the points opposite to the slit knife as is known from the state of the art, but rather a smooth surface, there is a reduction in thickness and not a deformation without thickness reduction as is known in the state of the art. The lateral surface fields of this cutout sheet provided with slit lines are then folded for the manufacture of the first 90 ° cigarette container, in which the recoil forces are remarkably lower in especially when using wide strip materials, so that in the Mechanical manufacturing is possible faster bonding.

The degree of thickness reduction depends on the material used, however as a general rule it will amount to 10 to 80% of the total thickness, preferably from 20 to 70%, so Especially preferred from 40 to 50%.

The slit lines meet preferably on the side of the cutout sheet, which forms the inner side in the finished box. This has the other advantage. of a pleasant optical appearance of the finished package. In the packs with round edges of the state of the art, in the songs always see the slots. This can be avoided with the present invention Whenever the slit lines are above the inner side of the packs, the outside of the packs Visible to the consumer is unprocessed and shows a smooth surface.

By the number of slit lines and their distance from each other, you can set the size and type of Rounding. Preferably, per fold area there are 6 to 8, in Special 7 slit lines, which are in a distance about 1 mm. from each other. When folding, a pack with round edges; rounding radius corresponds then about that of a regular cigarette in the market. Also preferably, there are 2 lines per fold area of groove that are in a distance of 6 to 8 mm., in special about 7 mm. When folding, then a pack with beveled edges.

The slit lines extend preferably for the entire length and / or width of the pack, so that transverse and / or longitudinal edges are obtained completely round or beveled.

       \ newpage
    

As foldable materials for the sheets of clipping and cigarette packs can be used papers and wide strip cartons, in which it is specially positive slit lines attract attention by forces recoil and, with it, fast processing.

Especially preferably, all of the 4 longitudinal edges of the packs, that is, the edges Longitudinal part of the pack and the edges Longitudinal part of the lid (if any) are rounded or Beveled, however not the transverse edges. However, with  corresponding setting of the cutout sheet is also it is possible that only 2 longitudinal edges (adjacent or opposite diagonally) or also in addition to the edges longitudinal, the transverse edges are rounded and / or beveled

It is also preferred that the songs transverse between base of pack, front wall of pack and back wall of the box as well as, if a part is present of cover, the transverse edges between front wall of cover, back cover wall and top cover side are rounded or beveled, however not the longitudinal edges of the pack, that is, the longitudinal edges of the part of the pack and, if present, the longitudinal edges of the part of top.

The manufacture of the cut sheets is Performs in a known way. That is, the cutout sheets are unwound strips of cutout sheet material, which are housed on rolls, and are stamped as cutout sheets of broadband. Usually a work step occurs, in which the cutout sheets are treated and, at the same time, stamped and / or cut and, if necessary, molded, using a knife cleft in the manner described. Through the fold and glue usual on the side surfaces, then you get mechanically the finished pack of cigarettes, which usually contains a group of cigarettes wrapped in paper of inner corrugated cardboard cover. In lid packs folding according to the invention, normally a usual flange part, which protrudes in the open pack something on the inner side of the front wall of the pack and It has a cavity, which makes it possible to grip cigarettes located in the pack.

The invention is explained hereinafter by means of An example of realization. It shows:

Fig. 1 a cross section through a cutting blade 100 according to the invention with a slit line 180,

Fig. 2 a cross section through a cutting blade 100 according to the invention with another form of realization of a slit line 180,

Fig. 3 a cross section through a state of the art cutout sheet,

Fig. 4 a cutout sheet 100 according to the invention for the manufacture of a pack of cigarettes 10 according to the invention of the type of folding lid,

Fig. 5 a pack of cigarettes 10 according to the invention of the type of folding lid, whose 4 longitudinal edges They are rounded,

Fig. 6 a cross section of the pack of cigarettes 10 of Fig. 5,

Fig. 7 a cross section through a pack of 10 cigarettes with beveled edges as well as

Fig. 8 a cutout sheet 100 according to the invention for the manufacture of a pack of cigarettes 10 according to the invention according to the invention without part of the lid.

Figure 1 shows a cross section to through a cutout sheet 100 with a slit line 180 with v-shaped cross section. The cross section of the slit line 180 depends on the knife used and can present, for example, also a more acute angle than in the figure 1 or be rectangular, as shown in figure 2.

In comparison, in figure 3 it is shown in the cross section a slot known in the state of the art, in which there is no reduction in accordance with the invention with thickness.

Fig. 4 shows a cutout sheet 100 for the manufacture of a pack of cigarettes 10. The main surface fields 122, 124, 142 and 144, which in the finished pack of cigarettes produce the front wall of box 22, the rear wall of box 24, the front wall of cover 42 and the back wall of cover 44. Also, they are observed the base field 130 and the upper side field 150, as well as the lateral surface fields 126, 127, 128, 129, 146, 147, 148 and 149, which in the finished pack correspond to the base of pack 30, the top side of lid 50, as well as the walls sides 26, 28, 46 and 48. The cutout sheet 100 of Fig. 4 it has 7 slit lines 180 that run essentially parallel. In the reinforcement field 170 only 4 lines are provided of recess due to the somewhat small dimensioning. The lines around which parts of the cutout sheet are folded they are represented (with the exception of slit lines 180) in dashed line in figure 4 and are indicated by the figure of reference 182. Trimming sheet 100 also has 2 incisions 184, 185. For the manufacture of the pack of cigarettes 10 can be folded first the surface fields lateral 128 and 129 90 ° upwards and then the lateral surface field tabs 160 and 161 located together They are also folded 90 ° inwards. So, the bottom of the cutout sheet 100 is folded 90 ° towards above with the base surface 130 and the first field of main surface 122, through which the tabs of lateral surface field 160 and 161 come into contact with the base camp 130 and are pasted. If the first surface field main 122 is folded more (90 °), then the fields of lateral surfaces 128, 129 and 126, 127 come to lie one on other and can be glued, so that the packet part 20 she is ready. The cover part 40 is similarly manufactured, it is that is, the lateral surface field tabs 162 and 163 are glued with the upper lateral field 150. The reinforcement field 170 is glued inward on the main surface field 142 and then the lateral surface fields 148, 149 and 146, 147 are stuck with each other.

The finished pack is then observed in the Figure 5. Among others, the longitudinal edges are shown rounded 32, 34, 36, 38, 52, 54, 58, as well as the edges cross-sections 31, 33, 51, 55 not rounded. Lines slit 180 are located on the inner side of the pack and They are not visible to the consumer from outside.

Fig. 6 shows a cross section to through the packet portion 20 of the packet 10 of Fig. 5, in which the rounded longitudinal edges 32 are observed, 34, 36 and 38, the lateral field surfaces that overlap 126, 128 and 127, 129 and the, if the rounded edges are not taken in account, essentially usual rectangular cross section for flip-top box packs 10.

Fig. 7 shows a cross section to through the box part 20 of a box 10 with edges beveled 32, 34, 36, 38, in which each song is formed by 2 slit lines 180 located on the inner side.

Fig. 8 shows a cutout sheet 100 for the manufacture of a pack of cigarettes 10 without cover part 40. Trimming sheet 100 consists of the first two fields of main surface 122 and 124 with their surface fields laterals 126, 127, 128 and 129 and the base camp 130 located in means, medium. The lateral surface fields 128 and 129 have lateral surface field tabs 160 and 161, which at fold with base field 130 are glued and collaborate for the Stabilization of the pack.

       \ vskip1.000000 \ baselineskip
    

Documents cited in the description

This list of documents cited by the applicant was included exclusively for the reader's information and is not part of the European patent document. That was compiled with the greatest diligence; however, the EPO assumes no responsibility for any errors or omissions .

Patent documents cited in the description

EP 0205766 A [0002]

US 4955531 A [0003]

DE 7120716 U [0006]

Claims (10)

1. Pack (10), made of a cut-out sheet (100) of foldable material, with a pack part (20), in which the pack piece (20) has a front pack wall (22), a back wall of the box (24), side walls of the box (26, 28) and a base of the box (30), and one or several edge (s) of the box (10) are rounded or bevelled in the folding material by each 2 or more adjacent slit lines (180), essentially parallel, characterized by the fact that the folding material is wide strip cardboard or wide strip paper. 2. Pack (10) according to claim 1, characterized in that it also has a cover part (40) with a front cover wall (42), a rear cover wall (44), side cover walls ( 46, 48) and an upper cover side (50), in which the cover part (40) is articulated with the rear cover wall (44) in the rear wall of the box (24). 3. Pack (10) according to claim 1 or 2, characterized in that the slit lines (180) are located on an inner side of the pack (10). 4. Package (10) according to one of claims 1 to 3, characterized in that all of the 4 longitudinal edges (32, 34, 36, 38) of the package part (20) and, if any, all of the 4 longitudinal edges (52, 54, 56, 58) of the cover part (40) or the transverse edges (31, 33) between the front wall of the box (22) and the rear wall of the box (24) , as well as the box base (30) and, if any, the transverse edges (51, 53) between the front cover wall (42) and the rear cover wall (44), as well as the top cover side (50), are rounded or beveled. 5. Pack (10) according to one of claims 1 to 4, characterized in that the slit lines (180) are formed by a 10-80% thickness reduction of the folding material. 6. Trimming sheet (100) of foldable material with a first main surface field (122) with a first left and right side surface field (126, 127), as far as the upper edge of the first main surface field ( 122) a base field (130) and a second main surface field (124) are joined to the upper edge of the base field (130) with a second left and right side surface field (128, 129), and with a or several area (s) with each two or several parallel slit lines (180) essentially characterized by the fact that the folding material is wide strip cardboard or wide strip paper and by the fact that the area (s) Fold (s) is / are arranged between one or more of the lateral surface fields (126, 127, 128, 129) and one or both of the main surface area (s) (122, 124) or between one or both main surface fields (122, 124) and the base field (130). 7. Trimming sheet (100) according to claim 6, characterized in that a lateral surface field tab (160, is attached each time to the lower edge of the second left and right side surface field (128, 129). 161). 8. Trimming sheet (100) according to claim 6 or 7, characterized in that between all the lateral surface fields (126, 127, 128, 129) and the two main surface fields (122, 124) or fold areas are found between the two main surface fields (122, 124) and the base field (130). 9. Trimming sheet (100) according to one of claims 6 to 8, characterized in that a third main surface field (144) is joined to the upper edge of the second main surface field (124) with a third field of left and right lateral surface (146, 147), to the upper edge of the third main surface field (144) an upper lateral field (150), and to the upper edge of the upper lateral field (150) a fourth main surface field ( 142) with a fourth field of left and right lateral surface (148, 149) and by the fact that the trimming sheet (100) has one or more fold area (s) with each two or more slit lines ( 180) essentially parallel, which is / are disposed between one or several of the third and fourth lateral surface field (146, 147, 148, 149) and the third and / or fourth main surface field (144, 142) or between the third and / or fourth main surface field (144, 142) and the lateral field upper (150). 10. Trimming sheet (100) according to claim 9, characterized in that a lateral surface field tab (162, is attached to the upper edge of the third left and right side surface field (146, 147). 163) and at the upper edge of the fourth main surface field a reinforcement field (170).