UA73414C2 - Cut sheet and packet produced therefrom, in particular, for cigarettes - Google Patents

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 DEGREE to 90 DEGREE and the other in an S-curve.

Description

Description of the invention

This invention relates to sheet blanks, as well as boxes made from them, used, in particular, as packaging for cigarettes.

Cigarettes are usually released on the market either in soft packs or in hard boxes, for example, flip-top boxes, or boxes with a hinged lid, and also in so-called hard-soft packs without a hinged lid.

In the case of rigid boxes, it is also known to round the corners and edges to protect the consumer's pockets. For example, document OE 2940797 A1 describes a cigarette box for this purpose, in particular, with a hinged lid in which all corners and edges are rounded. However, the present application does not disclose how this box can be manufactured.

EP 0764595 A1 describes a cigarette box with a hinged lid, the four horizontal main ribs of which are chamfered or rounded. Corresponding sheet blanks are also shown for obtaining these ribs. This source also contains a reference to document OB 2,523,251 (lines 51-54 in column 4 of document EP 12 0764595 AT), and at the same time also a combination of rounded or beveled horizontal ribs from EP 0764595 A1 with beveled longitudinal ribs from 5 2,523,251. However, again there is no indication of how these special variants are manufactured.

In fact, manufacturing a box, particularly a flip-top cigarette box in which all corners, as well as longitudinal ribs and horizontal main ribs are rounded or chamfered, from a single solid sheet is problematic.

Therefore, the task of the present invention is to create an easy-to-manufacture sheet blank for making a box, in particular, a box for cigarettes, in which all longitudinal ribs and horizontal main ribs, as well as corners are rounded or chamfered as much as possible.

The solution to this problem is a sheet blank made of flexible material to form a rectangular box, which is closed on at least 5 sides, and two diametrically opposite sections of the main planes in the rectangular box formed (Ge) and the bottom section connecting them are placed on the sheet blank in a straight line one after the other, and the sides, which in the formed rectangular box are adjacent to these two diametrically opposite sections of the main planes and the bottom section connecting them, are formed by the sections of the side surfaces located on the sides of both sections of the main planes, and the edges of both diametrically opposite in the rectangular box formed by the sections of the main planes are formed by sections of the bend, which differs in that "- two sections of the bend at the corners (in the preferred version, the lower ones) of both, diametrically opposite in the rectangular box formed by the sections of the main planes, meet one of one, and M which of the two sections of the bend that meet (in the variant which (preferably substantially at right angles) to each other, one bounded by an arc segment of about 459 to 902, in an embodiment which

Zo is preferred, from 652 to 80g, and the other is limited by a 5Z-shaped curve, and this 5-shaped curve is adjacent - to the segment of the arc of the circle in the corner of the sections of the main planes, and that these sections of the inflection are each formed in the variant, which is preferred, by two or by more adjacent, essentially parallel, fold lines. "du Preference is given to the sheet blank defined above, which has the first section of the main surface with the left and right first sections of the side surfaces, and c - the bottom section is adjacent to the upper edge of the first section of the main surface, and the second section is adjacent to the upper edges of the bottom section the section of the main surface with the left and right second sections of the side surfaces, - this sheet blank has horizontal and vertical fold sections, namely the first and second horizontal sections of the fold between the first section of the main surface and the bottom section, as well as the bottom - 75 section and the second section of the main surface, and from 1 to 4 vertical sections of the fold between the left first section of the side surface and the first section of the main surface, the first section of the main surface and the right (95) first section of the side surface, the left second section of the side surface and the second section of the main surface, and 1" also the second section of the main surface and the right second section of the side surface, while - the first horizontal section of the bend meets the first and second vertical sections - 70 of the bend near the upper corner of the first section of the main surface and

T» the second horizontal section of the fold meets the third and fourth vertical sections of the fold near the upper corner of the second section of the main surface.

The sheet blank described above can be simply produced after appropriate modification of the existing machines for their production. As a result of the usual folding and gluing, it turns out a rigid box consisting 59 only of the body, where you can put a certain number of cigarettes wrapped in an inner wrapper. Of course

GF) the dimensions of the cigarette box are selected in such a way that these packed cigarettes are tightly placed in the box 7, and at the upper, open end, slightly protrude from it, so that the consumer can open the box and take out the cigarettes.

However, as a rule, in addition to the body, the box must have a lid, so the result will be an ordinary box with a hinged lid.

In order to obtain this conventional box with a hinged lid, the sheet blank described above is made with additional sections, namely, the one adjacent to the second section of the main surface by the third section of the main surface with the left and right third sections of the side surfaces, and to the upper edge of the third section the upper part of the lid adjoins the main surface, and the fourth part of the main surface with the left and right parts of the side surfaces adjoins the upper edge of this upper part for the lid, and

- the sheet blank is made with additional horizontal and vertical sections of the fold, namely the third and fourth horizontal sections of the fold between the third section of the main surface and the upper section of the cover, as well as the upper section of the cover and the fourth section of the main surface, and the fifth to eighth vertical sections of the fold between the left third section of the side surface and the third section of the main surface, the third section of the main surface and the right third section of the side surface, the left fourth section of the side surface and the fourth section of the main surface, as well as the fourth section of the main surface and the right fourth section of the main surface, while - the third horizontal inflection section meets at the upper corner of the third section of the main 7/o surface with the fifth and sixth inflection sections, and - the fourth horizontal inflection section meets at the lower corner of the fourth section of the main surface with the seventh and eighth inflection sections.

In addition to the described sections, the sheet blank in the preferred embodiment additionally has, on the lower edges of the left and right second sections of the side surfaces, left and right second edge folding valves of the sections of the side surfaces, as well as on the upper edges of the left and right third sections of the left and right side surfaces the third marginal bending valves of the sections of the side surfaces. These edge flaps of the side surfaces serve to strengthen the bottom and lid of the finished box.

In the preferred embodiment, near the upper edge of the fourth section of the main surface there is a reinforcing section, which is glued to the inside of the fourth section of the main surface during the manufacture of the box, and also serves for reinforcement.

As the flexible material, conventional materials for the manufacture of hinged lid boxes can be used, such as paper or cardboard, optionally coated, as well as plastic, plastic film or laminated plastic, preferably short-fibre paper or short-fibre cardboard. with

The fold lines can be made either as extrusions or, preferably, as incised fold lines, and preferably extend along the entire length and width of the box.

To form extrusions, the sheet blank is pressed in the appropriate places with a scoring device. On the opposite side, there is a groove that corresponds to the form of the extrusion, into which the material "E from the sheet blank can be extruded. When the extrusions are arranged in parallel according to the described method, a wave-shaped cross-section appears. This method is described, for example, in US Pat. No. 2,523,251, and the result is shown in Fig. -th7

Fig. 2 is exactly there. Then, when assembling the sheet blank processed in this way along the presses, rounded (in the case of several presses) or beveled (in the case of two presses) edges of the box will automatically be formed.

However, the disadvantage is that, due to the inherent rigidity and elastic turning forces of the packaging material, gluing during the manufacture of the box is not without problems. Usually they appear on such overlapping parts of the sheet blank that form the side walls of the box. Because of the rounded or chamfered edges, the area of these overlapping areas is significantly reduced compared to a normal box with a hinged lid, so that only a limited amount of glue can be applied. The consequence of this is that machine production is slowed down, as it has to wait longer for the relatively smaller amount of glue to dry well, as otherwise the box would open again due to the elastic return forces of the material. This is especially pronounced when short-fiber cardboard or paper is used to make a box with a hinged lid. During the production of paper or cardboard, the paper mass is cast on ;" a fast moving conveyor belt. This leads to the fact that the long fibers in this mass are mainly oriented in the longitudinal direction. Depending on whether the sheet blanks are then cut from the finished fabric of the material lengthwise or crosswise, the long fibers are located in the sheet blank across the longitudinal axis of the sheet blank (short-fiber) or along the longitudinal axis of the sheet blank (long-fiber). The orientation of the fibers across the longitudinal direction of the short fiber sheet blanks results in good flexibility about the transverse axis, but poor flexibility about the longitudinal axis. Their elastic turning forces during lateral gluing are therefore greater than those of long-fiber sheet blanks, in

WHICH, due to the "rearranged" position of the long fibers in the material, everything is exactly the opposite. However, on the other hand, for boxes with a hinged lid, preference is given to the use of short-fiber sheet blanks, as they significantly contribute to the stability of the lid (geometric closure without skewing, the lid does not come off easily), rigidity of the box due to higher stability in the transverse direction and flatness box, i.e. the maximum reduction of the curvature of the box, in comparison with the use of two long fiber materials.

The use of indentation lines instead of extrusions significantly reduces the elastic turning forces, so that short-fiber materials can be used for quick and simple production of boxes without the problems associated with reducing the surface area for gluing the box.

When making incisions with a running knife, the thickness of the material forming the box is reduced. For this, the sheet blank is placed on a smooth stand and processed with a running knife, so that in addition to compaction, material removal is possible. Depending on the shape of the running knife, there is, for example, an M-shaped or

MO-shaped cross section. Since the stand does not have grooves opposite the running knife as in extrusions, but rather has a flat surface, thickness reduction occurs rather than deformation without thickness reduction as in the case of extrusions. 65 The degree of thickness reduction depends on the material used and the specific area of the bend. Bending lines with an incision of vertical sections of the bend are made from 10-8095, in the preferred version,

30-7095, in a particularly preferred embodiment, 40-6095 and, for example, about 5095 by reducing the thickness of the paper or paperboard, while the fold lines with the incision of the horizontal portions of the fold form from 10-5095, in the preferred embodiment, 20 -4095 and, for example, about 3095 by reducing the thickness of the paper or cardboard.

Indented fold lines are preferred for sheet blanks proposed in accordance with the present invention for another reason. Namely, they have the advantage that when they are located on the inner side of the finished box, the outer side looks completely untouched and unprocessed, and therefore has a better visual appearance for the consumer, which is not possible with the use of extrusions. 70 By choosing the number of fold lines and the distance between them, you can set the size and type of rounding. In a preferred embodiment, between 6 lines and 8 lines of inflection are performed in the fold area, in particular, 7 lines which are approximately 1mm apart. When folded, a box with rounded edges is formed; the radius of rounding approximately corresponds to the radius of a regular cigarette. It is also preferable to perform two fold lines at the bend area, which are at a distance of 6-8 mm from each other, in particular, approximately 7 mm. Then, during assembly, a box with beveled edges will be formed.

Also, for a uniform visual appearance of the box, it is preferred to have the same number of fold lines in all fold areas.

For the meeting of vertical and horizontal sections of the bend, it is better to make the end of the segment of the arc of a circle and the end

Z-shaped curves were made at right angles to each other and parallel to the edges of the sections of the main surfaces, since in this way the transition between different sections of the bend is possible without problems.

In the preferred embodiment, the segment of the arc of the circle and the 5-shaped curve do not connect with each other or connect only at the corner point of the sections of the main surfaces. Although in principle it is possible to have at least a partial connection between a segment of a circle arc and a 5-shaped curve, when folding to create a box in the transition region between these two different sections of the bend, deformations occur due to compaction and distortion of the geometric shape.

In addition, it is preferred that at least one inflection section be bounded at both ends by i) either a segment of an arc of a circle or a 5-shaped curve, and it is also preferred that all inflection sections which at both ends meet other with essentially right-angle bend sections, both ends of these bend sections were bounded by either a segment of an arc of a circle or a 5-shaped curve. Finally, it is also preferred that all bend sections running parallel to each other end either with a segment of an arc of a circle or with a 5-shaped curve. In all three cases, it creates a better visual impression. -

The production of sheet blanks is carried out in a known way, that is, sheet blanks are obtained from "E strip of blank material stored in a roll and printed, in the variant which is preferred, as short-fiber sheet blanks. Then a technological operation is usually performed, during which these me)

Зз5 sheet blanks are processed in the described manner with the help of a running knife or scoring device, and cha are simultaneously cut and/or cut out, and optionally relief embossing is performed. Then, with the help of conventional folding and gluing on the side surfaces, a ready-made box is obtained, for example, for cigarettes, which usually contains a certain number of cigarettes wrapped in an inner wrapper. In the boxes with a hinged lid proposed according to the present invention, a conventional "70" insert is usually also inserted, which, in the open box, slightly protrudes from the inside above the front wall of the box and has a recess that allows you to take the cigarettes that are in the box.

The invention is further explained by an example of implementation with reference to the drawings, in which: Fig. 1 - proposed according to the present invention sheet blank for the manufacture of a box with a folding lid for cigarettes, and

Fig. 2 - view ХХ of Fig. 1 on an enlarged scale. 1 shows the first section 20 of the main surface, which in the finished box corresponds to the front wall of the box body, with its adjacent sections 22 and 24 of the side surfaces. Between the left first section 22 of the lateral surface and the first section 20 of the main surface, as well as between the first section 20 of the main surface and their right first section 24 of the side surface, there are the first and second vertical fold sections 90 and 91, which are formed here by seven fold lines 100 with an incision and have the shape of a quarter circle at the upper end. - The bottom section 30 adjoins the first section 20 of the main surface from above, followed by the second section 40 of the main surface. Between the first section 20 of the main surface and the bottom section ZO there is a first horizontal section of inflection 80, and between the bottom section ZO and the second section 40 of the main surface there is a second horizontal section of inflection 82. Both of these horizontal sections of inflection 80 and 82 are also formed by seven lines of inflection 100 with a notch, each of which has a 5-shaped line at both ends. On the sides of the second section 40 of the main surface, which in the finished box corresponds to the back wall of the case, there is a left

F) the second section 42 of the side surface with the left second edge folding valve 46 of the section of the side surface located on it, and the right second section 44 of the side surface with the left second edge bending valve 48 of the section of the side surface located on it. Between them lie the third and fourth vertical sections of the bend 92 and 93.

Adjacent to the second section 40 of the main surface is the third section 50 of the main surface, which in the finished box corresponds to the back wall of the cover. Sections 40 and 50 of the main surfaces are separated by a fold line 12 so that the lid of the finished box can be folded back. Between the third section 50 of the main surface and the left third section 52 of the side surface with the left third deflection valve 56 of the side surface section located on it, on one 65 side, and the right third section 54 of the side surface with the right third edge deflection valve 58 of the side section located on it surface, on the other hand, there are a fifth vertical fold section 94 and a sixth vertical fold section 95. The vertical fold sections 92 and 93, as well as 94 and 95, are separated from each other by slots that can reach the fold line 12 or even further .

On the upper side, behind the third section 50 of the main surface, there is a section 60 of the cover, which is followed on the side

The fourth section 70 of the main surface. Between the third section 50 of the main surface and the section 60 of the cover there is a third horizontal section of the fold 84, between the section 60 of the cover and the third section 70 of the main surface there is a fourth horizontal section of the fold 86, which, like all other sections of the fold, are formed by seven fold lines 100 with cut

Around the fourth section 70 of the main surface are located the left fourth section 72 of the side surface, /about the right fourth section 74 of the side surface with the seventh and eighth vertical fold sections 96 and 97 located between them, as well as the reinforcing section 72. This reinforcing section 72 due to its slightly reduced size has only four fold lines 100 with a notch.

Vertical and horizontal fold sections occur near the corners of the head surface sections, such as vertical fold sections 90 and 91 with a horizontal fold section 80 near the upper corners of the head surface section 21 7/5 1 23 . The vertical sections of the bend end in the embodiment shown in Fig. 1 with a quarter-circle arc, which on the one hand smoothly transitions into the upper edge of the corresponding adjacent section of the side surface, and on the other side smoothly transitions into the outer edge of the corresponding section of the main surface. The horizontal sections of the bend end with Z-shaped curves, which smoothly transition on one side to the outer edges of the corresponding adjacent section of the main surface, and on the other side - to the outer edges of the adjacent bottom section or section of the side surface.

In addition to the fold lines 100 with the incision of the various fold areas, other fold lines can be seen, for example, the fold line 12 between the second 40 and the third 50 sections of the main surfaces, the fold line 77 on the reinforcing section 72, and the fold lines 55 and 45, along which the edge can be bent folding valves of the sections of the side surfaces. high school

To make a box for cigarettes, you can first bend the sections 42 and 44 of the side surfaces 90 g upwards, and then the edge folding valves 46 and 48 of the sections of the side surfaces are located on them 902 inside. Then the lower part of the blank 10 with the bottom section З0 and the first section 20 of the main surface are bent up 902, due to which the edge flaps 46 and 48 of the sections of the side surfaces are brought into contact and glued to the bottom section ZO. If the first section 20 of the main surface is bent again (by 902), then the sections "I 22, 42 and 24, 44 will overlap each other and can be glued, so that the lower part of the box, the body, will be ready. In the same way, the upper part of the box, the cover is made, i.e. the edge folding valves 56 and 59 of the sections of the side surfaces are glued to the upper section 60 of the cover. The reinforcing section 72 is glued from the inside to the fourth section 70 of the main surface, and then the sections 52, 72 and 54, 74 of the side surfaces are glued together. The fold lines 100 with a notch are therefore on the inside of the finished box, and are not visible to the consumer from the outside. uh-

The box with a hinged lid obtained during the described assembly has rounded longitudinal edges. Four horizontal main ribs are also rounded. Thanks to the meeting of the arc segment of the circle and the 5-shaped curve at the ends of the bend sections, a smooth transition between the bend sections is obtained, and all eight corners of the box are "rounded" in this way.

The meeting place of the circle arc segment and the Z-shaped curve is shown on a larger scale in the detailed view - Fig. 2. All vertical sections of the bend 91 and 93 end with a segment of the arc of a circle from approximately 602 to 702, all h horizontal sections of the bend 80 and 82 end with a 5-shaped curve. The segments of the arc of a circle and the 5-shaped curve -" are adjacent to each other without a connection and meet at the corner points 23 and 43. -And (95) s" - 50 s"

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Claims (15)

The formula of the invention is) 1. A sheet blank (10) made of flexible material for forming a rectangular box, which is closed on at least five sides, and two diametrically opposite areas (20, 40) of the main planes in the formed rectangular box and a bottom area (30), which connects them, placed on the sheet blank (10) in a straight line one after the other, and the sides that in the formed rectangular box are adjacent to these two diametrically opposite sections (20, 40) of the main planes and the bottom section (30) connecting them , formed by sections (22, 24, 42, 44) of the side surfaces, which are located on the sides of both sections (20, 40) of the main planes, and the edges of both 65 diametrically opposite sections (20, 40) of the main planes in the formed rectangular box are formed by sections of the inflection, which differs in that - two areas of inflection meet each other at the corners of both diametrically opposite main planes of the areas (20, 40) formed in the rectangular box, and - of these two areas of inflection, one is bounded by a segment of the arc of a circle from approximately 452 to 902, and the other bounded by a Z-shaped curve, and the 5-shaped curve is adjacent to the segment of the arc of a circle near the corner of the sections (20, 40) of the main surfaces. 2. The sheet blank (10) according to claim 1, which is characterized by the fact that said fold areas are each formed by two or more adjacent, essentially parallel, fold lines. C. The sheet blank (10) according to claim 1 or claim 2 with the first section (20) of the main surface with the left and right 70 first sections (22, 24) of the side surfaces, and - the upper edge of the first section (20) of the main surface is adjacent to the bottom section (30), and the second section (40) of the main surface with the left and right second sections (42, 44) of the side surfaces is adjacent to the upper edge of the bottom section (30), - the sheet blank (10) has horizontal and vertical fold sections, and namely the first and second 75 horizontal sections of the bend (80, 82) between the first section (20) of the main surface and the bottom section (30), as well as the bottom section (30) and the second section (40) of the main surface, and the first to fourth vertical sections fold (90, 91, 92, 93) between the left first section (22) of the side surface and the first section (20) of the main surface, the first section (20) of the main surface and the right first section (24) of the side surface, the left second section (42 ) of the side surface and the second section (40) of the main surface, a also by the second section (40) of the main surface and the right second section (44) of the side surface, - the first horizontal section of the fold (80) meets the first and second vertical sections of the fold (90, 91) near the upper corners (21, 23) of the first section ( 20) of the main surface, and - the second horizontal section of the bend (82) meets the third and fourth vertical sections of the bend (92, 93) near the lower corners (41, 43) of the second section (40) of the main surface. Ha 4. Sheet blank (10) according to claim 3, which differs in that the lower edges of the left and right second sections (42, 44) of the side surfaces are adjoined by the left and right edge folding valves (46, 48) of the sections of the side surfaces. and) 5. The sheet blank (10) according to clause 3 or claim 4, which differs in that the third section (50) of the main surface with the left and right third sections (52, 54) of the side is adjacent to the upper edge of the second section (40) of the main surface surfaces, the upper edge of the third section (50) of the main surface adjoins the upper section (60) of the lid, and the fourth section (70) of the main surface with the left and right sections (72, 74) adjoins the upper edge of the upper section (60) of the cover side surfaces, and the sheet blank (10) has additional horizontal and vertical fold sections, namely the third and fourth fold sections (84, 86) between the third section (50) of the main surface and the upper section (60) of the lid, as well as the upper section (60) of the lid and the fourth section (70) of the main surface, and the fifth-eighth o'clock 3z5 Vertical sections of the fold (94, 95, 96, 97) between the left third section (52) of the side surface and the third h- section (50) of the main surface, third section (50) of the main surface, etc the third section (54) of the side surface, the left fourth section (72) of the side surface and the fourth section (70) of the main surface, as well as the fourth section (70) of the main surface and the right fourth section (74) of the side surface, "- the third horizontal section of the fold (84) meets the fifth and sixth vertical sections of the fold (94, 95) near the upper corners (51, 53) of the third section (50) of the main surface, and - c - the fourth horizontal section of the fold (86) meets the seventh and by the eighth vertical sections of the fold (96, 97) near the lower corners (71, 73) of the fourth section (70) of the main surface. "» 6. Sheet blank (10) according to claim 5, which differs in that the upper edges of the left and right third sections (52, 54) of the side surfaces are adjoined by the left and right third edge folding valves (56, 58) of the side surface sections, and the upper edge of the fourth (70) section of the main surface is adjacent to the reinforcing section (72). -AND 7. Sheet blank (10) according to one of claims 1-6, characterized in that said flexible material is short-fiber cardboard or short-fiber paper. Mn 8. Sheet blank (10) according to claim 7, which differs in that the fold lines are fold lines with a cut (100). h 9. A sheet blank (10) according to claim 8, which is characterized by the fact that the mentioned fold lines (100) with an incision of 5 vertical sections of the fold are formed from 10-80 95, in particular 40-60 95, by reducing the thickness of paper or cardboard, and the mentioned the fold lines (100) with the incision of the horizontal sections of the fold are formed from 10-50 9o, in particular 20-40 s" to, by reducing the thickness of paper or cardboard. 10. Sheet blank (10) according to one of claims 1-9, which differs in that the end of the circle arc segment and the end of the Z-shaped curve are located at right angles to each other and parallel to the edges of the sections (20, 40, 50, 70) main surfaces. 11. A sheet blank (10) according to one of claims 1-10, which is characterized by the fact that both ends of at least one i) bend section are limited either by a segment of a circle arc or by a 5-shaped curve. co 12. A sheet blank (10) according to one of claims 1-11, which differs in that at all bend sections, which at both ends meet at a right angle with other bend sections, both ends of these bend sections are either limited by a segment of an arc of a circle, or a 5-shaped curve. 13. A sheet blank (10) according to one of claims 1-12, which is characterized by the fact that all parallel sections of the bend are limited either by a segment of an arc of a circle or by a 5-shaped curve. 14. A box that can be made from a sheet blank (10) according to one of claims 1-13. 15. A box that can be made from a sheet blank according to claim 8 or claim 9, in which said fold lines 65 (100) with a notch are on the inside of the box. Official bulletin "Industrial Property". Book 1 "Inventions, useful models, topographies of integrated microcircuits", 2005, M 7, 15.07.2005. State Department of Intellectual Property of the Ministry of Education and Science of Ukraine. s o " "- " so m. shi s ;" -I (95) sh» - 50 s» F) ime) 60 b5