BG65386B1 - Cigarette packet and cut sheet - Google Patents

Abstract

The cigarette packet and the cut sheet find application in the production of packings used in the cigarette industry. The cigarette packet is with an improved crosswise stability as well as rigidity. The packet is made of folding material and consists of a lower part (20) and a lid (40), having a front wall, a back wall, side walls, a top wall and a base. One or several of the packet edges are rounded or chamfered by means of two or several scored lines (180) of bending. The cut sheet of folding material comprises a cut sheet of the lower part of the packet and a cut sheet of the packet lid. The cut sheet of the lower part of the packet consists of a first basic surface field (122) with a left and a right first lateral surface field (126, 127), a basic field (130) joined to the upper edge of the first basic surface field (122), and a second basic surface field (124) with a left and a right second lateral surface field (128, 129), which is joined to the upper edge of the basic field (130). One or several bending areas are formed on the cut sheet, each of them shaped by two or more parallel scored lines of bending (180). The folding material is a wide paper or cardboard sheet with across wise arrangement of the fibres, while the bending areas are situated between the side and the basic surface fields or between the basic surface fields and the basic field.

Description

Technical field

The invention relates to a box, in particular for cigarettes with rounded or beveled edges and to a sheet cutting machine for its manufacture, which find application for the manufacture of packaging used in the cigarette industry.

BACKGROUND OF THE INVENTION

Cigarettes are usually sold in soft or hard packs, for example in folding lid boxes or folding lid boxes, as well as in so-called semi-rigid non-folding packs.

Rigid or rounded edges of boxes are known for hard packs. For example, EP 0 205 766 B1 presents boxes with a movable lid, all four longitudinal edges on which they are curved and as a result, less material is required for the manufacture of cigarette cases and, on the other, the boxes fit better in the hand of the user.

In order to achieve the rounded or beveled edges of the sheet cutter from which the cigarette box is made, it is provided with grooves in the areas where the edges of the cigarette box are formed.

According to US 4 955 531, grooves may be made by means of a grooving assembly, made in a form suitable for the purpose of the sheet cutting, which is positioned at the corresponding points on one side of the sheet cutting. On the other side of the cutting board there is a groove in which the material can be pressed.

In the case of parallel extending channels, an embossed cross-section is made according to the process of formation described above. When the sheet cutting thus produced is folded, the curves formed by several grooved grooves or beveled, formed by two grooves, the edges of the cigarette pack when bent, are oriented along the grooves automatically.

The downside, however, is that due to the natural rigidity and strength of the elastic restoration of the package, the adhesion of its individual surfaces required for the production of the cigarette package is somewhat problematic.

This generally refers to the areas of overlapping surfaces of the sheet cutter that form the side walls of the box, and as a result of the rounding or bevelling of the edges, these overlapping areas are significantly reduced compared to the overlapping areas of ordinary cigarette cases with rolling lid and as a result, which may use less adhesive.

As a consequence, the productivity of the packaging machine of this type is diminished as it is necessary to wait for a long time until a relatively small amount of adhesive dries well to prevent the box from being opened due to the elastic forces of recovery of the material of which it is formed.

This applies in particular to the case where a wide canvas of fine-grained cardboard or paper is used to produce boxes with a movable lid.

For the production of paper or cardboard, the material forming the product is placed on a fast moving tape. As a result, the long fibers in the material are preferably oriented longitudinally. Depending on whether the sheet cutting is cut longitudinally or transversely to the finished end strip of material, the long fibers in the sheet cutting are arranged transversely to the longitudinal axis of the sheet cutting (wide canvas) or longitudinally to the longitudinal axis of the sheet cutting (narrow canvas).

Owing to the orientation of the threads, transverse to the direction of travel, a wide sheet material cutting results in good material flexibility around the transverse axis, but poor flexibility around the longitudinal axis.

The forces of restoring the elasticity of lateral adhesion are thus greater than those of a narrow canvas of fox

65386 Bl is a cutting pattern in which, due to the transport position of the long filaments in the material, longitudinally in the direction of travel, the conditions are exactly opposite.

On the other hand, sheet sawing in the use of a wide canvas is preferably used to form folding lid boxes, since such a canvas favors the stability of the lid, which in this case does not easily tear apart and closes without distortion as well as rigidity of the packaging, which is a consequence of the higher stability of the material in the transverse direction, and also achieves a flat position of the packaging itself, i. to achieve the least possible flat curvature of the packaging compared to the materials used in the narrow canvas.

In boxes with rounded edges of prior art, grooves are always located on the edges.

US 5 143 282 discloses a cigarette box with a movable lid, as well as a folding box for its design. The box is made of folding material and consists of a part of the box and a part of the lid having a front wall, a back wall, side walls, a base of the box and an upper wall of the lid, wherein the back wall of the lid and the back wall of the box are connected. The longitudinal edges of the box are rounded by two or more substantially bending folding lines formed in the folding material.

This document also describes a sheet cutting made of folding material that includes a part of the box and a part of the lid formed by the first, second, third and fourth main surface fields with left and right side surface fields, main field and upper field. The unfolding has one or more transverse folding lines and longitudinal folding regions, each of the folding regions being formed by two or more substantially parallel folding folding lines. End ears are attached to the second and third lateral surface fields, which are connected to the upper end, respectively, to the left and right third lateral surface fields. There is also a gain zone with a gain field associated with the upper edge of the fourth main surface field.

This known cigarette package, given the location of the unfolding in the direction of orientation of the long fibers of the material relative to the longitudinal axis, does not guarantee particular stability of the lid, which, due to the possibility of distortion in the closing for opening and opening, may be torn. The known box does not have high stability in the transverse direction, which leads to deterioration of its flatness and justifies the possibility of distortion and torsion of the part of the box.

Closest to the object of the present invention, a solution of a leaf cutter for a cigarette box is disclosed in DE 71 20 716 U. The known leaf cutter is made of folding material and includes a part of the box consisting of the first main surface left field and right first side surface fields, a main field attached to the upper edge of the first main surface field and a second main surface field to the left and right second lateral surface fields, which is connected to the upper edge of the main field. The sheet cutting has folding lines and one or more folding regions, each formed by two or more substantially parallel flexing lines. The folding areas are located between the lateral surface fields and the main surface fields, and the fold lines are between the main surface fields and the main field.

The known expansion described above, due to its location, which is not in accordance with the direction of orientation of the long fibers of the material relative to the longitudinal axis, which leads to a deterioration of its stability in the transverse direction, cannot provide a cigarette box with the required rigidity in as a result, its flatness is disturbed due to the possibility of the package being distorted.

SUMMARY OF THE INVENTION

It is an object of the present invention to design a cigarette case of sheet cutting using transverse fiber sheet material which has increased lid stability, increased rigidity and minimized curvature in a planar position.

65386 Bl

The problem is solved by a box made according to the invention, which is made of folding material. The box consists of a lower part having a front wall, a back wall, side walls and a base, wherein one or more edges of the box are rounded or bevelled by two or more adjacent parallel bending lines formed in the collapsible material. Folding material is a wide canvas of cardboard or wide canvas of paper with the transverse arrangement of long fibers.

The folding material is also intended to be plastic, plastic film or plastic laminate.

Preferably, a box according to the invention also has a front wall cover, a back wall, side walls and an upper wall, wherein the back wall of the lid is connected to the back wall of the bottom of the box.

In a preferred embodiment of the box according to the present invention, the groove lines are formed as grooves on its inside, respectively on the inside of the bottom of the box and on the inside of the lid.

The box according to another preferred embodiment of the invention is configured such that all four longitudinal edges of the bottom of the box and, if any, all four longitudinal edges of the lid are rounded or tapered or the transverse edges of the bottom of the box are located between the front the wall, respectively the back wall and the base of the box and, if present, the transverse edges of the lid, located between the front wall, respectively the rear wall and the upper wall of the lid, are also rounded or tapered.

According to the invention, the box according to the invention is made so that the groove lines are grooved by reducing the thickness of the folding material by 1080%.

The problem according to the present invention is also solved by a sheet cutting made of a folding material, which includes a first main surface field with left and right first side surface fields, a base field attached to the upper edge of the first main surface field and a second main surface field with left and right second lateral in a surface field, which is connected to the upper edge of the main field. One or more bending regions are provided, each of which is formed by two or more adjacent parallel parallel bending lines. Folding material is a wide web of paper or cardboard with a transverse arrangement of fibers, and the folding areas are located between the lateral surface fields and the main surface fields or between the main surface fields and the main field.

The sheet cutting according to the invention is preferably such that the end surface ears are attached to the lateral surface fields, which are connected to the lower edge respectively of the left third lateral surface field and the right second lateral surface field.

It is preferable to perform a sheet cutting in which, according to the invention, the bending regions are located between all lateral surface fields and the two main surface fields, as well as between them and the main field.

In another preferred embodiment of the present invention, the sheet cutting has a third main surface field with left and right third side surface fields that is connected to the upper edge of the second main surface field, and there is also an upper field associated with the upper edge of the third main surface field and with the lower edge of the fourth main surface field, which has left and right fourth lateral surface field. In addition, the sheet cutting has one or more folding areas, each formed by two or more parallel parallel lines that are located between one or more of the third and fourth lateral surface fields and the third and / or fourth major surface field or between the third and / or fourth main surface field and the upper field.

Then the sheet cutting according to the invention is suitably arranged in such a way that the end surface ears are joined to the lateral surface fields, which are connected to the upper end, respectively to the left third lateral surface field and the right third lateral surface field, in which

65386 Bl provides a gain zone associated with the upper edge of the fourth main surface field.

By bending the sheet cutter described above, a rigid package is obtained, which consists only of the bottom of a box in which a group of cigarettes can be inserted. Typically, the box is sized so that the cigarettes fit snugly into it and protrude from the top of the box so that the user can open the cigarette out of it.

As a rule, however, in addition to the bottom of the box, there is a lid whose back wall is connected to the back of the box so that a box with a folding lid is obtained.

To obtain this foldable lid box, the sheet cutting as described above is provided with additional fields associated with the second main surface field, which are the third main surface field and the left and right lateral surface fields, upper field connected to the upper edge of the third main surface field and the fourth main surface field also with left and right lateral surface fields associated with the upper field, as well as bending lines located between them.

Preferably, the leaf cutting in addition to the margins described also has left and right end ears formed on the lower edge of the left and right second lateral surface fields and on the upper edge of the third left and right lateral surface fields. These ears on the lateral surface fields serve to reinforce the base and lid of the end box.

The intended enhancement field, located on the upper edge of the fourth main surface field, adheres to the inside of the fourth main surface field during the box forming process and, like the end ears, serves to reinforce the lid.

Furthermore, in the formulation of the grooves according to the invention with the reduction of the thickness of the material, the elastic restoring forces are very small, in particular when using materials of the type wide web with a transverse arrangement of the longitudinal fibers and as a result increases the possibility of faster adhesion to the packaging machine.

The degree of material thickness reduction depends on the material used, but will typically be between 10 and 80% of the total thickness, preferably from 20 to 70%, and most preferably from 40 to 50%.

The groove lines are preferably arranged on the side of the leaf cutter that forms the inside of the cigarette box. This has the added benefit of a more attractive looking box.

In addition, the placement of grooves forming the ridge lines on the edges is avoided by positioning them on the inside of the boxes, leaving the outer visible portion untreated and having a smooth surface.

The extent and the type of rounding can be fixed by the number of grooves and the distance between them. Preferably there are from 6 to 8, in particular 7 lines for each bending region, which are approximately 1 mm apart.

When bending the box with rounded edges, the radius of curvature corresponds approximately to that of the surrounding surface of the cigarettes marketed. Also preferred are two grooves spaced 6 to 8 mm apart, in particular 7 mm apart. Then bending produces a box with beveled edges.

The grooving lines preferably extend over the entire length and / or width of the box, resulting in a complete bevel or rounding of the transverse and / or longitudinal edges.

Various consumer materials may be used to form sheet blades and, respectively, cigarette cases, which must be bendable, in particular paper and cardboard commonly used for the manufacture of cigarette cases, whether or not coated, but also plastic materials . Particularly preferred are papers with a transverse arrangement of long fibers and cardboards, in which the creasing lines have a positive effect on the elastic restoring forces and thus on the rapid fabrication of the box.

65386 Bl

All four longitudinal edges of the box and of the lid, if any, are intended to be rounded or beveled, but this does not apply to the transverse edges. With a properly designed sheet cutting, only two longitudinal edges (two adjacent or diagonally opposite) are possible and, in addition, their transverse adjacent edges may be rounded and / or oblique.

In addition, it is preferable to have rounded or tapered transverse edges between the base of the box, its front wall, its back wall, and also, if there is a part forming the lid, its back side and its upper side, but not the longitudinal edges of the box, ie the longitudinal edges of the part of the box and, if any, the longitudinal edges of the lid.

Sheet cuts are produced in a known manner, i. these sheet cuts are stripped of the width of the intended material, which is stored on rolls and printed on the sheet cuts in the direction of a wide web of transversely oriented long fibers.

Explanation of the annexed figures

The invention will be further explained by its exemplary embodiment shown in the accompanying drawings, of which:

Figure 1 is a cross-sectional view through a sheet cutting according to the invention with a grooved line;

Figure 2 is a cross-sectional view through a sheet cutting according to the invention, with another embodiment of a stripping line;

Figure 3 is a cross-sectional view through a sheet cutting with a grooved line made according to the prior art;

Figure 4 shows a sheet cutting according to the invention for the manufacture of a cigarette box with a folding lid;

Figure 5 illustrates a cigarette box with a folding lid according to the invention, on which the four longitudinal edges are rounded;

Figure 6 is a cross-section of the cigarette box of Figure 5;

Figure 7 is a cross-section through a cigarette box with beveled edges;

Figure 8 is a sheet cutting according to the invention for the manufacture of a cigarette box without a lid.

Examples of carrying out the invention

For a more detailed presentation of the present invention, non-limiting examples of its implementation will be described as follows.

Figure 1 shows a cross-section through a leaf cutter 100, showing that there is a groove 180 with a V-section.

The cross-section of the groove 180 is dependent on the groove used and may have a sharper edge than shown in figure 1 or be rectangular as shown in figure 2.

For comparison, figure 3 shows a channel formation known in the art which is not in accordance with the invention and without reducing the thickness of the sheet material from which the cutting is formed. The folding material is intended to be fine-grained, wide-canvas paper or paperboard, plastic, plastic film, and plastic laminate.

Figure 4 shows a leaf cutter 100 for the production of a cigarette box 10. Basic surface fields 122, 124, 142 and 144 can be seen which, when the cigarette box 10 is completed with the lid 40, respectively form the front wall of the box 22, the back wall of the box 24 , front cover wall 42 and rear cover wall 44.

It is also possible to see the main field 130, the upper field 150, in particular the field of the upper side of the lid 40, the lateral surface fields 126, 127, 128, 129, 146, 147, 148 and 149, which when the cigarette box 10 is completed correspond to the base of the box 30, the upper side of the lid 50 and the side walls of the box 26,28,46 and 48. A gain zone is provided in the form of a reinforcing field 170.

The leaf cutter 100 of Figure 4 has seven parallel grooves formed in the form of grooved lines 180. In the gain zone, four grooved lines 180 are formed on both sides of the boom box 170.

Also provided are bending lines 182 along which the individual pieces of sheet cutting 100 are folded and shown

65386 Bl in Figure 4 with dashed lines. Sheet cutting 100 also has two sloping lines 184 and 185.

Figure 4 also shows that the lateral surface fields 128 and 129 have end ears 160 and 161 and the lateral surface fields 146 and 147 are provided with end ears 162 and 163 attached thereto.

Figure 5 shows the finished cigarette box 10, which consists of a lower portion 20 and a lid 40. The box 10 has rounded longitudinal edges 32, 34, 36, 38, 52, 54, 56, 58 and straight, non-rounded transverse edges 31, 33, 51, 53.

The stripping lines 180 are located on the inside of the box 10 and cannot be seen from the outside by the user.

Figure 6 shows a cross-section of the cigarette box 10 of Figure 5. It can see the rounded longitudinal edges 32,34,36 and 38, the overlapping lateral surface areas 126, 128 and 127, 129 and the rectangular cross-section of the cigarette box 10 which has a folding lid 40.

Figure 7 shows a cross-section of a cigarette box 10, in one preferred embodiment of the invention, wherein the longitudinal edges 32, 34, 36, 38 are tapered, each of which is formed by two grooves 180 located inside the cigarette box 10.

Figure 8 shows the lever cut 100 for the production of the cigarette box 10, without the lid 40.

The leaf cutting 100 consists of two main surface fields 122 and 124 with their lateral surface fields 126, 127, 128 and 129 respectively, and a main field 130 located between them.

The lateral surface fields 128 and 129 have end ears 161 and 162 which are glued together with the main box 130 of the box and contribute to the overall stability of the box.

Use of the invention

In order to produce the cigarette box 10, the lateral surface fields 128 and 129 must first be bent upwards of 90 ° and the end ears 160 and 161 of the lateral surface fields 128 and 129 disposed therein must also be bent 90 ° inwards. .

The bottom portion of the cut sheet 100 is then folded out 90 °, with the first main surface field 122 folded together with the base field 130, whereby the end ears 160 and 161 of the lateral surface fields 128 and 129 come in contact with the inner surface of the main field 130 and adhere thereto.

When the first main surface box 122 is further folded 90 °, the lateral surface fields 128, 129 and 126 and 127 lie on top of one another and can be glued, resulting in the cigarette box, and in particular the bottom of the box being completed.

The lid 40 is similarly shaped, or in particular the end ears 162 and 163 are folded 90 ° to contact with and adhere to the inner surface of the upper field 150.

The enhancement field 170 is glued inwards to the fourth main surface field 142 and then the lateral surface fields 148, 149 and 146, 147 are glued to each other.

The finished box can be seen in Figure 5, which shows a box composed of the bottom of the box 20 towards the rear wall (24) to which the lid (40) is removably attached.

To shape the stripping lines, the thickness of the material of which the box is built is reduced by using a stripping knife. For this purpose, the sheet cutting is placed on a flat substrate and treated with a grooving knife, which, in addition to compressing the material in the groove area, may also take away some of it.

Depending on the shape of the groove blade, for example, a channel with a V or U-shaped cross-section is formed. Because the flat pad has no grooves in the locations opposite to the ridge knife, as is known in the prior art, and its surface is flat and smooth, a reduction in material thickness is obtained, not as in the prior art methods, deformation without reducing the thickness of the material.

To form the cigarette box, the lateral surface margins of the sheet cutting, which are provided with grooved lines, as described above, are first

65386 Bl are folded 90 °, with the presence of stripping lines formed by reducing the thickness of the material, the elastic restoring forces are much smaller, in particular when using materials of a wide canvas type with a transverse arrangement of longitudinal fibers, as a result, the possibility of faster adhesion to the packaging machine is increased.

Sheet cuts are produced in a known manner, i. these sheet cuts are stripped of the width of the intended material, which is stored on rolls and printed on the sheet cuts in the direction of a wide web of transversely oriented long fibers.

This is usually followed by a step in which the sheet cuts are machined with a grooving knife in the manner described above and at the same time are punched and / or cut and also, as an option, can be stamped.

By conventional bending and gluing on the side surfaces, the finished cigarette box is machined and contains a group of cigarettes wrapped in an inner shell.

Typically, according to the invention, there is an insert in the folding lid box which, when opened, extends outward from the inside of the front wall and has a free space provided for removing the cigarettes from the box.

Claims (10)

Claims A box made of a folding material comprising a lower part (20) having a front wall (22), a rear wall (24), side walls (26, 28) and a base (30) having one or more edges the box (10) is rounded or tapered by two or more folding bending lines (180) formed into the foldable material, characterized in that the folding material is wide cardboard or wide canvas of paper having a transverse arrangement long fibers. Box according to claim 1, further comprising a cover (40) with a front wall (42), a rear wall (44), side walls (46, 48) and an upper wall (50), wherein the rear a wall (44) of the lid (40) is connected to the back wall (24) of the bottom of the box (20). Box according to claim 1 or 2, characterized in that the grouting lines (180) are formed as grooves on the inside of the box (10). Box according to claims 1 to 3, characterized in that all four longitudinal edges (32, 34, 36, 38) of the lower part (20) and, if any, all four longitudinal edges (52, 54, 56, 58) of the lid (40) are rounded or tapered, or the transverse edges (31, 33) of the lower part (20) of the box (10) are located between the front wall (22), respectively the rear wall (24) and the base (30) of the box (10) and, if present, the transverse edges (51, 53) of the lid (40) located between the front wall (42), respectively, the rear wall (44) and the upper wall (50) of the lid (50). 40) are also rounded or oblique. Box according to claims 1 to 4, characterized in that the grooves (180) are formed as grooves by 1080% reduction in the thickness of the folding material. 6. Sheet cutting made of folding material comprising a first main surface field (122) with left and right first side surface fields (126,127), a base field (130) attached to the upper edge of the first main surface field (122), and a second main surface field (124) with a left and right second lateral surface field (128, 129) connected to the upper edge of the main field (130), one or more bending regions provided, each of which is formed by two or more parallel bending lines (180), har characterized by the fact that the foldable material is a wide web of paper or cardboard with the transverse arrangement of the fibers, the folding regions being located between the lateral surface fields (126, 127, 128, 129) and the main surface fields (122,124) or between the main surface fields (122, 124) and the main field (130). Sheet cutting according to claim 6, characterized in that end ears (160, 161) are connected to the lateral surface fields (128, 129), which are connected to the lower edge respectively of the left third lateral surface field (128) and to the right 65386 Bl second lateral surface field (129). Sheet cutting according to claims 6 and 7, characterized in that the bending regions are located between all lateral surface fields (126,127,128,129) and the two main surface fields (122,124) and between them and the main field (130). Sheet cutting according to any one of claims 6 to 8, characterized in that there is a third main surface field (144) with a left and right third lateral surface field (146, 147) which is connected to the upper edge of the second a basic surface field (124), further comprising an upper field (150) associated with the upper edge of the third main surface field (144) and the lower edge of the fourth main surface field (142) having left and right fourth lateral surface field (148, 149), wherein the sheet cutting (100) has one or more regions of cross tubes, each of which is formed by two or more parallel parallel grooves (180) which are arranged between one or more of the third and fourth lateral surface fields (146,147,148,149) and the third and / or fourth main surface field (142, 144 ) or between the third and / or fourth main surface field (142, 144) and the upper field (150). Sheet cutting according to claim 9, characterized in that end ears (162, 163) are connected to the lateral surface fields (146, 147), which are connected to the upper end, respectively, to the left third lateral surface field (146) and the right third lateral surface a surface field (147), wherein a gain zone is provided with a gain field (170) associated with the upper edge of the fourth main surface field (142).