EP1726535A1 - Package with weakening line and method and device for its manufacture - Google Patents

Abstract

The rectangular flapped packaging unit (10), in particular, for cigarettes has an outer wrapper consisting of film or some other tearable material, and is provided with a tear strip running diagonally along the front and rear walls into the side walls (16, 17). Independent claims are also included for: (1) a method for producing an outer wrapper with a tear strip for such a packaging unit; and (2) an apparatus for producing an outer wrapper with a tear strip for such a packaging unit.

Description

The invention relates to a cuboid pack, in particular cigarette pack, with outer wrapping made of foil and with a attached to the outer sheath, finite tear thread or a line of weakness. Furthermore, the invention relates to a method and an apparatus for producing packaging material formed in the above manner.

Packages of different shape and design are often provided to protect the contents of the package with an outer wrapper made of film or a similar packaging material. To open the package or the outer wrapper this is often provided with a tear thread or tear strip, which is attached by gluing or sealing to the outer sheath. This can be severed by detecting the tear thread at a handle end and so eliminated.

The invention relates to such packages, in particular with cigarette packs in the execution as cuboid hard pack (made of thin cardboard).

The invention is based on the object, a tear thread or the weakening line or tear strip on the outer sheath of a pack to be mounted so that upon actuation of the tear thread or the weakening line, the outer sheath is reliably removed in its entirety.

To solve this problem, the package according to the invention is characterized in that the tear thread or the weakening line in the region of a large front wall and / or rear wall obliquely or approximately diagonally extends from a (lower) Packungsecke to a diagonally opposite (upper) Packungsecke.

The (approximately) diagonal course of the tear thread or the weakening line in the area of at least one of the large-area packing walls ensures that the outer wrapper is optimally severed the first time so that the remaining wrapper parts can be pulled off in a simple manner via packing corners. Thus, the invention is particularly suitable for cigarette packs of the type folding box with shrink film as outer sheath.

A special feature is the weakening line of the outside envelope formed as a foil or the like. This forms a weakening of the wall thickness of the packaging material while maintaining the tightness. In the area of the linear material weakening, the film can be easily cut through. Alternatively, this may be a double line, that is, two parallel lines of weakness defining a detachable strip of material of the film, or a single line of weakness that can be severed by hand upon opening the enclosure.

Preferably, the tear thread or the weakening line is arranged so that in the region of narrow, upright side surfaces, a transversely directed, rectilinear portion is formed, adjacent to an end wall on the one hand and to a bottom wall on the other hand, and that these sections respectively rectified diagonal portions of the front wall and Connect rear wall together.

A special feature is the production of a (film) web with continuous tear thread or tear strip or continuous weakening line as well as blanks for outer sheaths. According to a particular embodiment, the tear thread or tear strip or line of weakness during continuous transport of the web of film, paper or the like is applied thereto, wherein the tear thread is moved by an exactly controlled thread guide according to the thread configuration to be produced transversely to the conveying direction of the (film) web ,

According to another important embodiment, thread sections, ie finished tear strip or tear strip with respect to the shape and length applied to the continuous (film) web. The tear strips are separated by a contoured cut of a thread path and thereby placed directly on the track according to the position of a blank for the outer sheath.

The inventive device for applying a continuous tear thread or tear strip on a continuously moving web has a special guide member for the tear thread, namely with a guide roller. This has a double function, namely serves for applying the tear thread to the web and at the same time as a management body. The guide roller is moved by a controlled gear in the direction transverse to the web or transverse to the conveying direction thereof, so that the tear thread is transmitted in a curved configuration on the web. Also, the drive of the tearing thread drawn from a thread bobbin is controlled taking into account the relative movement between the preferably continuously and at a uniform speed promoted web on the one hand and the tear thread on the other hand.

The device according to the invention for applying contoured thread sections or finished tear thread has a contoured, namely curved separating knife, which at each working cycle during instantaneous standstill of the web or a web section separates a tear thread formed according to the invention from a yarn path fed in the transverse direction and positionally accurate applies to the (film) web, in the region of a blank to be separated from this.

Both methods or devices are expediently set up for double-lane operation.

Fig. 1

eine Packung, nämlich Zigarettenpackung, mit Außenumhüllung in perspektivischer Darstellung,

Fig. 2

einen Abschnitt einer Bahn mit aufgebrachten Aufreißfaden für die Herstellung von Zuschnitten als Außenumhüllung,

Fig. 3

eine Vorrichtung, nämlich Verpackungsmaschine, zum Anbringen von Außenumhüllungen an Zigarettenpackungen,

Fig. 4

eine Einzelheit der Verpackungsmaschine gemäß Fig. 3, nämlich ein Aggregat zum Aufbringen von Aufreißfäden auf eine (Folien-)Bahn,

Fig. 5

eine Detailansicht des Aggregats gemäß Fig. 4 in der Schnittebene VI-VI,

Fig. 6

eine Detailansicht des Aggregats gemäß Fig. 4 in einer Schnittebene V-V,

Fig. 7

eine weitere Ansicht des Aggregats gemäß Fig. 4 entsprechend Pfeil VII,

Fig. 8

eine Einzelheit zu der Darstellung gemäß Fig. 7 - in vergrößertem Maßstab,

Fig. 9

eine weitere Einzelheit in Seitenansicht zu Fig. 7 gemäß Pfeil IX,

Fig. 10

eine vereinfachte Darstellung analog Fig. 4 einer Alternativausführung des Aggregats,

Fig. 11

eine andere Ausführungsform einer Packung mit Außenumhüllung, nämlich eine Zigarettenstange, in perspektivischer Darstellung,

Fig. 12

einen Zuschnitt für eine Außenumhüllung zu der Packung gemäß Fig. 11,

Fig. 13

einen Abschnitt einer (Folien-)Bahn mit abschnittweise aufgebrachten, vorgefertigten Aufreißfaden bzw. -streifen,

Fig. 14

einen Teilbereich einer Vorrichtung zum Herstellen und Aufbringen von Aufreißfaden gemäß Fig. 13, in Seitenansicht,

Fig. 15

eine Einzelheit der Vorrichtung gemäß Fig. 14 im Horizontalschnitt bzw. in Draufsicht entsprechend Horizontalschnitt XV-XV in Fig. 17,

Fig. 16 und Fig. 17

eine Einzelheit der Vorrichtung gemäß Fig. 14 in unterschiedlichen Stellungen von Organen im Vertikalschnitt entsprechend Schnittebene XVI-XVI in Fig. 14,

Fig. 18

einen Abschnitt einer (Folien-)Bahn mit einer fortlaufenden Schwächungslinie entsprechend Fig. 2,

Fig. 19

eine Zigarettenpackung des Typs Klappschachtel mit einer aus einer Folienbahn gemäß Fig. 18 hergestellten Außenumhüllung in perspektivischer Darstellung,

Fig. 20

einen Abschnitt einer Folienbahn mit einer einzelnen, fortlaufenden Schwächungslinie.

Further details of the package according to the invention, the method for producing the outer sheath and the device are explained in more detail below with reference to the patent drawings. It shows:

Fig. 1

a pack, namely cigarette pack, with outer wrapping in perspective,

Fig. 2

a portion of a web with applied tear-open thread for the production of blanks as outer sheath,

Fig. 3

a device, namely a packaging machine, for attaching outer wrappers to cigarette packs,

Fig. 4

a detail of the packaging machine according to FIG. 3, namely an aggregate for applying tear threads to a (film) web,

Fig. 5

a detailed view of the unit of FIG. 4 in the sectional plane VI-VI,

Fig. 6

a detailed view of the unit of FIG. 4 in a sectional plane VV,

Fig. 7

a further view of the unit of FIG. 4 according to arrow VII,

Fig. 8

a detail to the representation of FIG. 7 - on an enlarged scale,

Fig. 9

a further detail in side view to Fig. 7 according to arrow IX,

Fig. 10

a simplified representation analogous to FIG. 4 of an alternative embodiment of the unit,

Fig. 11

another embodiment of a package with outer wrapper, namely a cigarette rod, in perspective view,

Fig. 12

a blank for an outer wrapper to the package of FIG. 11,

Fig. 13

a section of a (film) web with sections, prefabricated tear strip or strips,

Fig. 14

a partial region of a device for producing and applying tear-open thread according to FIG. 13, in side view,

Fig. 15

a detail of the apparatus of FIG. 14 in horizontal section and in plan view corresponding to horizontal section XV-XV in Fig. 17,

FIGS. 16 and 17

a detail of the device according to FIG. 14 in different positions of organs in vertical section corresponding to sectional plane XVI-XVI in FIG. 14, FIG.

Fig. 18

a section of a (film) web with a continuous weakening line corresponding to FIG. 2,

Fig. 19

a cigarette pack of the folding box type with an outer wrapping produced from a film web according to FIG. 18 in perspective view,

Fig. 20

a section of a film web having a single, continuous line of weakness.

In the drawings, cigarette packs are shown as preferred applications, namely a hinged-lid pack 10 and a pack of packs for cigarette packs, namely a cigarette rod 11 (Figure 11). The aforementioned packages are hard packs of (thin) cardboard and each surrounded by an outer sheath. This consists of a thin, transparent plastic film, in particular shrink films, made of cellophane, but can also consist of other packaging material, for example made of paper.

A blank 12, 13 for forming the outer sheath consists of front wall 14, rear wall 15 and side walls 16, 17. Furthermore, the blanks 12, 13 form end walls 18 and a bottom wall 19 (hinged box 10). The side wall 16 is positioned as a closed strip of material between the front wall 14 and rear wall 15, while the opposite side wall 17 consists of an outer side flap 20 and an inner side flap 21. The two side flaps 20, 21 cover each other and are by sealing or gluing together connected. End wall 18 and bottom wall 19 consist of over the full length of the blank 12, 13 continuous end tabs 22, 23rd

The thus formed blank 12, 13 is folded in a known manner in a first folding step in a U-shape around the package, namely folding box 10 or cigarette rod 11. The side tabs 20, 21, which initially protrude beyond the package, are folded one after the other with partial overlapping (FIGS. 1, 11). Thereafter, the end flaps 22, 23 are folded to form the end walls 18 and the bottom wall 19, respectively.

To open the packing unit or the outer wrapping, a tear thread 24 is attached to the pack or to its outer wrapper according to FIGS. 1 to 17. The possibly strip-shaped tear-open thread 24 is preferably connected by gluing or sealing to the inside of the blank 12, 13. At one end of the finite tear thread 24 formed from the blank 12, 13 grip tab 25 is formed, which extends in the finished package on the edge of the side wall 17 and the side flap 20 and so can be detected by hand. With the aid of this grip tab 25, the tear-open thread 24 can be pulled off while severing the outer sheath or the blank 12, 13.

The tear thread 24 is attached to the blank 12, 13 in a particular configuration such that the outer wrap is severed by the severed tear thread 24 substantially diagonally in the area of the large-area package sides. As a result, formed corner caps of the outer sheath can be easily removed "over corner".

The (one-piece) tear-open thread 24 is positioned on the blank 12, 13 such that in the region of the front wall 14 on the one hand and the rear wall 15 on the other hand an approximately diagonal course is given (in a common imaginary diagonal plane). Thread sections 26, 27 thus extend approximately from a lower packing corner 28 to the diagonally opposite packing corner 29. In the concrete example, the thread section 26, 27 extends at a short distance from the respective packing corner 28, 29 and thus from the bottom 19 on the one hand and the end wall 18 on the other hand. In the area adjacent to these Packing corners 28, 29, so in each case at the ends of the thread sections 26, 27, the tear thread forms a rounding 30 as a transition into transversely directed, straight thread sections 31, 32. A continuous thread section 31 extends in the region of the one-piece side wall 16, across them and directly adjacent or above the bottom wall 19. The other thread section 32 extends in the upper region - adjacent to the end wall 18 and below the same - in the region of the side wall 17. This thread section 32 consists of two mutually partially overlapping sections. The tear thread is therefore arranged so that cover the ends of the same. In the area of the outer side flap 20, a grip tab 25 is attached to the portion of the thread section 32.

A special feature is the production of the blanks 12, 13 from a continuous web 33, from the blanks 12, 13 in a cutting unit 34 of the packaging machine (Fig. 3) are separated along a separating cut 68. The tear thread 24 is applied to the continuous web 33, preferably in continuous, continuous conveying movement. In this case, the likewise continuously supplied tear thread 24 is guided and applied to the web 33 that an approximately meandering or wave-shaped configuration of the tear thread 24 is given (Fig. 2). The thereby formed, extending in the longitudinal direction of the web 33 thread sections 31, 32 are unequal length. The end wall 18 facing the thread section 32 has a greater length than the thread section 31 in the region of the side wall 16 because of the adjacent side tabs 20, 21.

The application of the tear thread 24 to the continuous web 33 includes a procedural and technical feature. The tear thread 24 is transferred by a guide member to the web 33, in the present case by a rotating guide roller 35, this is attached to a holder. The tear thread 24 is fed so that a sufficient thread portion rests on the circumference of the guide roller 35. This is movable transversely to the continuously conveyed web 33 by means of a special, controlled transmission, such that the tear thread 24 is applied to the web 33 with one shown in FIG. 2 or in FIG. 12 or in a similar course.

A device for applying the tear thread 24 to the web 33 is expediently part of the packaging machine (FIG. 3). The unit is marked as section IV. Thereafter, the withdrawn from reels 38 web 33 of a thread unit 39 is supplied. This is shown by way of example in FIG. 4.

The tear thread 24 is withdrawn from a thread bobbin 40. The tear thread 24 is expediently one-sided, namely on the web 33 facing side, provided with an adhesive. The thread bobbin 40 is rotationally driven, in this example, at a constant conveying speed of the withdrawn tearing thread 24. The tear thread is guided over compensating rollers 41 which are movable relative to each other and cause a compensation of the Aufreißstreifens 24 when starting or stopping the packaging machine, ie in operating situations that deviate from the standard operating mode.

The actual thread aggregate consists of two gear units 42, 43. The gear unit 42 serves to compensate for the conveying speed of the tearing thread 24 due to the relative movement between the web 33 and tear thread 24. The gear unit 43 performs the controlled transverse movements of the transfer member, so the guide roller 35, for the tear thread 24 through.

At a constant withdrawal speed of the tear thread 24 in the area of the thread bobbin 40, the gear unit 42 must cause an increased conveying speed of the tearing thread 24 during formation of the thread section 26 and 27. In the area of the thread sections 31 and 32, the conveying speed of the tearing thread 24 is substantially the same as that of the web 33 coincide.

The gear unit 42 forms an alternating supply of thread length, which is reduced at increased conveying speed and rebuilt at the lower conveying speed. This thread supply consists of a thread loop as a result of deflection about a movable dancer roller 44. This is slidably mounted on a support 45, namely in a slot guide 46. On the support 45, two other, fixed guide rollers 47, 48 are mounted for the tear thread. The dancer roll 44 is centered between the pulleys 47, 48, however offset to these, stored, so that when moving the dancer roller 44, the distance from the pulleys 47, 48 is larger or smaller.

The dancer roll 44 is controlled in exact accordance with the trajectory of the web 33 and the tear thread 24. For this purpose, the dancer roller 44 is assigned a drive motor 49 as a drive member. This is connected via a gearbox, via a crank gear 50 with the dancer roller 44. Fig. 9 shows the side facing away from Fig. 4 side of the carrier 45 with the crank gear 50, wherein a connecting rod 51 is connected to the dancer roller 44. The servomotor 49 acts on a crank 52.

The gear unit 43 controls the movements of the guide roller 35, in a double sense: First, it is about the required movements of the guide roller 35 transverse to the web 33 and the other is about the correct angular position of the guide roller 35, so that they on the Angular position of the tear thread 24 is aligned with the web 33.

The guide roller 35 is mounted for transverse movement on a transversely movable carrier, namely on a guide carriage 53. This is displaceable on a transverse guide 54. The drive is via a pull rod 55, which may be driven by a servo motor or is controlled by a support roller of a curve.

The guide roller 35 is fastened with a support piece 56 to the guide carriage 53, namely with a fork-shaped, pivotable holder 57 mounted on the support piece 56. The holder 57 is rotatable with the guide roller 35 about an axis or pivotable, namely transversely to the axis of the guide roller 35. As a result, the guide roller 35 occupy different angular positions. Below the support piece 56, a pivoting gear is mounted, which consists of a steering rod 58 which is connected via a hinge 59 with a pivot arm 60 of the holder 57. The control of the steering rod 58 is not shown here and is analogous to the control of the pull rod 55, such that the guide roller 35 is always aligned in the feed direction of the tear thread 24 is. Fig. 6 shows a position of the guide roller 35 during the formation of the slanted yarn section 26, 27th

In a special way, the guide roller 35 is formed so that it can fulfill a dual function, namely the one hand guide the tearing thread 24 and on the other hand pressing the same to the web 33. The guide roller 35 has namely lateral elevations, in the area of the system of the tearing thread 24 to the Railway 33 are not effective. For this purpose, the guide roller 35 consists of three individual rollers 61, 62, 63. The average single roller 62 receives the tear thread 24 on the circumference, while the lateral single rollers 61, 63 take over the function of flanged wheels. The individual rollers 61, 62, 63 are independently rotatable and mounted on a fixed support shaft 64 by means of rolling bearings. The support shaft 64 consists of staggered sections, similar to a crank axle. The individual rollers 61, 62, 63 are arranged so that the central single roller 62 rotates centrally to an imaginary axis, while the single side rollers 61, 63 offset rotate, with the result that in the region of the transfer of the tearing thread 24 to the web 33 the Single rollers 61, 62, 63 are always aligned with their peripheral surfaces in a circumferential plane (Fig. 8).

So that the tearing thread 24 receives a sufficient wrap area of the guide roller 35, a support roller 36 is mounted below the guide roller, namely below the support piece 56, which causes a slight deflection and guidance of the tearing thread 24 to the guide roller 35.

The conveying movement of the tearing thread 24 in the region of the transfer to the web 33 results from the conveying speed of the web 33. This pulls the tearing thread 24 through the adhesive connection. The transfer of the tear thread 24 to the web 33 takes place in the region of a guide roller 65 of the web 33. At this is the guide roller 35 at. The guide roller 65 is mounted elastically, namely on a pivot arm 66, which is loaded by a compression spring 67 in the direction of the guide roller 35.

FIG. 10 shows an alternative to the thread unit 39 according to FIG. 4. The gear unit 43 corresponds to the embodiment of FIG. 4. In the area the transmission unit 42, a change has been made. The dancer roll 44 with servo drive is replaced by a compensating member, which rotates exclusively. This rotating sheave 37, at the periphery of the tear thread 24 is applied, caused by the eccentric shape with each revolution, a length compensation corresponding to the differentiated conveying speeds of the tear thread 24th

The packaging machine and its units are set up in the present example to double-track operation. The (double-width) web 33 consists of two blank sheets. Accordingly, the thread unit 39 is adapted to the simultaneous attachment of two tear threads 24. Accordingly, two thread bobbins 40 of the same equipment are provided, namely arranged one above the other. The other organs of the thread unit 39 and the gear units 42 and 43 are set either by an appropriate design or by double arrangement on the processing of the two tear threads 24. In particular, therefore, two guide rollers 35 are provided which are operated or adjusted simultaneously by common organs.

The cigarette rod 11 according to FIG. 11 is manufactured analogously to the folding box 10 with regard to the outer envelope. The blank 12 (FIG. 12) is formed such that the skew-oriented thread sections 26, 27 have proportionally a greater length in relation to the thread sections 31, 32. Incidentally, the outer sheaths are structurally coincident.

The tear thread 24 or tear strip can also be produced in sections and fed to a single blank 12 or the web 33 of film or the like (FIGS. 13 to 17). In each case, complete tear thread 24 are manufactured and applied to the web 33. In the embodiment of FIG. 13, the individual tear thread 24 have the same contour as in the embodiment of FIG. 1, Fig. 2. However, the tear thread extends with a piece of the thread portion 32 into the grip tab 25. Another end of the thread section 32 lies at a distance from the grip tab 25 of the adjacent blank 12, so that the tear thread 24 is mounted offset on the blank 12 as a whole.

Since the tear thread 24 is completely made in the present contour, other designs are possible, in particular without rounding 30, so for example in zig-zag design or with other corners.

The thread unit 39 for producing and attaching tear-open thread 24 according to FIG. 13 works with (at least) a severing knife, namely a thread knife 69, 70 for severing a contoured tear thread 24 from the front end of a material web, namely a thread path 71, 72. 70 has a shape which corresponds to that of the tear-open thread 24 to be separated, in the present case thus approximately V- or meander-shaped.

The thread path 71, 72 is fed transversely to the web 33 to a cutting block 73 of the thread unit 39. Within the cutting block 73, the thread knife 69, 70 movable up and down. A front end of the suture path 71, 72 is held within the cutting block 73 as a projection, corresponding to the width of the tear-open 24. The suture path 71, 72 runs within the cutting block 73 in a slot-like guide 74 and between an upper and lower guide roller 75, 76th For the separating cut, the thread knife 69, 70 is moved upwards from a lower starting position (FIG. Above the thread path 71, 72 a fixed counter knife 77 is formed, which has the same contour as the thread knife 69, 70. By the relative movement of the separating cut is carried out, therefore a tear thread 24 as the front end of the thread path 71, 72 separated.

The thread knife 69, 70 leads the severed tear thread 24 on continued (upward) movement directly to the web 33 and puts the tear thread 24 on the underside of the web 33 (Fig. 16). The thread knife 69, 70 is designed for this purpose as a (shaped, contoured) carrier or beam 85, which is in an upright also contoured recess 78 of the cutting block 73 movable up and down. To hold the tearing thread 24, the beam 85 is provided with suction holes 79 at the top adjacent to the thread knives 69, 70. The suction holes 79 are connected at least during the transport phase of the tearing thread 24 to a vacuum source.

The web 33 is conveyed through the cutting block 73 in an (upper) guide slot 80. On the side opposite the separating knife 69, 70 an (elastic) pressure piece 81 in the cutting block 73 is formed as an abutment when the tearing thread 24 is pressed. The pressure piece 81 can be heated to seal the tearing thread 24.

The web 33 is also continuously conveyed in this embodiment. However, a web section 82 in the area of the thread unit 39 or of the cutting block 73 is controlled such that there is a temporary standstill, namely during the attachment of the tear thread 24. The web 33 is for this purpose via two pivotally mounted and synchronously reciprocable Balancing pendulum 83, 84 out. This mechanism, which is known per se, causes a momentary standstill of the web section 82 despite a substantially continuous drive.

The contoured beams 85 as a carrier of the thread knives 69, 70 are each attached to a (horizontal) support arm 86 with their ends. This is mounted in a machine frame and up in a slot 87 movable up and down to allow the separation process for the tear thread 24 and the supply to the web 33.

The device shown in FIGS. 14 to 17 is also set up for two-lane operation. Accordingly, a correspondingly formed cutting block 73 is fed with two yarn paths 71, 72, in one arrangement one above the other. The upper suture path 71 is passed directly into the cutting block 73, while the lower suture path 72 initially passes below the cutting block 73 and is then directed over guide rollers 88 upwards and then into a horizontal plane. The web 33 is double-width, so that in the transverse direction in each case two blanks 12 are adjacent.

A particular alternative to the described embodiments with tear strips is shown in FIGS. 18 to 20. The packaging material itself, ie in particular the film for the outer envelope of the (cigarette) pack is with one or more continuous or continuous line of weakness 89, 90 and 91, respectively. These are a linear weakening of the wall thickness of the packaging material, but while maintaining a (inside) continuous closed, dense film. The cross-sectional weakening or the weakening line 89, 90, 91 created in this way enables easy, manual severing of the film in this area. Preferably, the lines of weakness 89, 90, 91 are applied by laser. A laser beam can be controlled so precisely that a linear material weakening is possible even with very thin-walled films. The course of the single or multiple weakening line 89, 90, 91 corresponds to the course of the tear thread 24 in the preceding embodiments, wherein the sections of the tear thread denoted with line section line sections of the weakening line 89, 90, 91.

In the embodiment according to FIGS. 18 and 19, two parallel lines of weakness 89, 90 are provided, namely continuous lines. The two lines of weakness 89, 90 run parallel to each other at a small distance, so that a strip of material 92 is formed between the two lines of weakness. This can be cut out like a tear strip by hand from the walls of the outer sheath or the blank 12. In this case - analogous to the embodiment of FIG. 2 - a grip tab 25 is provided which facilitates the tearing process. The shape or the course of the weakening lines 89, 90 corresponds to the described embodiments.

Fig. 20 shows a particular embodiment with a single line of weakness 91, preferably also made by laser. This weakening line is severed by (manual) pulling apart adjacent regions of the film or the blank 12, that is, without a tear tab.

In the production of the lines of weakness 89, 90 or 91 by means of a laser, a laser is arranged above the longitudinally preferably continuously conveyed web 33 which is transversely movable in a controlled manner and in coordination with the conveying movement of the web 33 relative to the web 33, such that the desired formation of the lines of weakness 89, 90, 91 is generated. The device for moving a laser head can be designed analogously to FIG. 5 or FIG. 7.

LIST OF REFERENCE NUMBERS

10

folding box

11

cigarette carton

12

cut

13

cut

14

front wall

15

rear wall

16

Side wall

17

Side wall

18

bulkhead

19

bottom wall

20

side tabs

21

side tabs

22

end tab

23

end tab

24

opening thread

25

grip tab

26

section of thread

27

section of thread

28

package corner

29

package corner

30

curve

31

section of thread

32

section of thread

33

train

34

blank subassembly

35

leadership

36

supporting role

37

shim

38

reel

39

yarn unit

40

Fadenbobine

41

compensation roll

42

gear unit

43

gear unit

44

dancer roll

45

carrier

46

slot guide

47

idler pulley

48

idler pulley

49

servomotor

50

crank mechanism

51

pleuel

52

crank

53

guide carriage

54

width guide

55

pull bar

56

supporting piece

57

bracket

58

handlebars

59

joint

60

swivel arm

61

Single role

62

Single role

63

Single role

64

carrying axle

65

deflecting

66

swivel arm

67

compression spring

68

separating cut

69

Stitch Cutter

70

Stitch Cutter

71

yarn path

72

yarn path

73

cutting block

74

guide

75

leadership

76

leadership

77

against knife

78

recess

79

suction bore

80

guide slot

81

Pressure piece

82

web section

83

balance shuttle

84

balance shuttle

85

bar

86

Beam

87

Long hole

88

Umienkwatze

89

weakening line

90

weakening line

91

weakening line

92

strips of material

Claims (21)

A cuboid pack, in particular a cigarette pack, with outer wrapping of film or other tear-resistant packaging material and with a means applied to the outer casing for cutting the outer casing at first opening, namely a tear thread (24) or a weakening line (89, 90; 91), namely a tear thread (24) or a weakening line (89, 90, 91), characterized in that the tear thread (24) or the weakening line in the region of a large-area front wall (14) and / or rear wall (15) extends obliquely or approximately diagonally from one (lower) box corner (28) to a diagonally opposite (upper) box corner (29). A pack according to claim 1, characterized in that the tear-open thread (24) or the weakening line (89, 90; 91) extends transversely to the latter in the region of narrow side walls (16, 17), preferably immediately adjacent to an end wall (18) or Bottom wall (19). A package according to claim 1 or 2, characterized in that the tearing thread (24) or the weakening line (89, 90; 91) is curved in the region from one thread section or line section (26, 27) to another thread section or line section (31, 32) is configured to form a rounding (30). Pack according to claim 1 or 2, characterized in that thread segments (26, 27) of the tear thread (24) or line segments of the weakening line (89, 90, 91, 91) extend obliquely or diagonally in the region of the front wall (14) and rear wall (15) ) extend at the same rectilinear angle of inclination and that ends of the one-piece tear line (24) or the continuous line of weakness (89, 90; 91) overlap one another, in particular in the region of a transverse thread section (32) or a transverse section of the weakening line (89, 90; 91) in the region of a side wall (17) adjacent to or below an end wall (18). A package according to claim 1, characterized in that a single, continuous line of weakness (89, 90; 91) or two spaced apart parallel lines of weakness (89, 90; 91) in the region of the outer envelope or in the region of the film for the outer envelope of a continuous or sectionally formed weakening of the cross section of the film are formed, in particular by treatment of the film by means of laser. A method of producing blanks (12, 13) of film, paper or other tear-resistant packaging material to form outer sheaths of a cuboid (cigarette) pack having tear-open thread (24) attached to the outer wrapper which is continuously fed to a continuously conveyed web (33) of the packaging material supplied and applied to this, characterized in that the tear thread (24) at least in partial regions transversely to the conveying direction of the web (33) is moved, such that the on the web (33) fitting tearing thread (24) in partial regions obliquely to the conveying direction the web (33) is directed. Method for producing blanks (12, 13) from film or other suitable packaging material to form outer sheaths of a cuboid (cigarette) pack with a weakening line (89, 90; 91) attached to the outer sheath as a means for severing the outer sheath on first opening, characterized by the following features: a) the weakening line (89, 90, 91) is formed as a continuous line on a continuously conveyed web (33) of the packaging material, b) the weakening line (89, 90, 91) consists of a continuous cross-sectional weakening of the packaging material such that an internal residual cross section of the packaging material is closed, c) the weakening line (89, 90; 91) extends at least in partial regions transversely to the direction of movement of the web (33), such that the weakening line (89, 90; 91) extends obliquely to the conveying direction of the web (33) in these subregions. A method according to claim 6, characterized in that the tear thread (24) in a controlled manner reciprocally transversely to the direction of movement of the web (33) and temporarily guided in this direction of movement, such that the on the web (33) fitting tearing thread (33). 24) has a reciprocating, in particular approximately meandering configuration. A method according to claim 6 or 7, characterized in that the tear thread (24) in the region of transitions between obliquely directed thread sections (26, 27) in the conveying direction of the web (33) extending thread sections (31, 32) and vice versa curves (30) of Tear thread (24) can be shaped as a transition. Method for producing blanks (12, 13) from film, paper or other tear-resistant packaging material to form outer sheaths of a cuboid (cigarette) pack with a tear thread (24) attached to the outer sheath, which is a finite thread section of a thread path (71, 72 ) is separated by transverse separating cut and applied to a continuous web (33) of the packaging material, characterized in that a contoured tear thread (24) separated by a correspondingly shaped thread knife (69, 70) of the thread path (71, 72) and in the area a blank (12, 13) is applied to the web (33) such that in the region of a front wall (14) and / or rear wall (15) obliquely or diagonally extending thread sections (26, 27) are formed. Method according to claim 10, characterized in that the contoured tear thread (24) is positioned on the web (33) or on the blank (12, 13) such that an end region of the tear thread (24) extends into a grip tab (25). the blank (12, 13) extends and another end of the tearing thread (24) in the adjacent blank (12, 13) ends at a distance from the grip tab (25). Apparatus for producing blanks (12, 13) for outer wrappings of film, paper or the like for rectangular packs, in particular cigarette packs, with a tear thread (24) attached to the outer wrapping, characterized in that preferably in a packaging machine for attaching the blanks (12 , 13) a thread unit (39) is arranged as a separate aggregate which applies a tear thread (24) drawn from a thread bobbin (40) to a web (33) of the packaging material fed to the thread unit (39), wherein the thread unit (39) engages Guide member for the tear thread (24) - guide roller (35) - which is transversely to the conveying direction of the web (33) movable to form portions of the tear thread (24) which extend at an angle to the conveying direction of the web (33). Apparatus according to claim 12, characterized in that the guide member for the tear thread (24), in particular the guide roller (35) on a transversely to the direction of movement of the web (33) movable support - guide carriage (53) - is mounted, wherein movements of the guide carriage (53) is reciprocable on the web (33) in accordance with the configuration of the tearing thread (24) to be produced. Apparatus according to claim 12 or 13, characterized in that the guide roller (35) is pivotable about an axis transverse to the axis of rotation, such that the guide roller (35) on the running direction of the tear thread (24) in the transfer to the web (33). is alignable. Apparatus according to claim 14, characterized in that the pivotable guide roller (35) is associated with a pivoting gear, in particular a controllably movable handlebar (58) via a pivot arm (60). with the guide roller (35) and a rotatable support (57) thereof is connected. Apparatus according to claim 12, characterized by a speed compensating member for the tear thread (24) which can be applied to the web (33) at a constant conveying speed of the thread unit (39) and can be applied at a non-uniform speed. Apparatus according to claim 16, characterized in that the speed compensation member is a precisely controlled - by servo motor (49) -movable dancer roller (44) around which the tear thread is guided around or an eccentric, rotatable shim (37), at the periphery of the tear thread is applied , Apparatus for producing blanks (12, 13) for outer wrappings of film, paper or the like for cuboidal packs, in particular cigarette packs, with a tear thread (24) attached to the blank (12, 13), characterized in that preferably in a packaging machine for Attaching the blanks (12, 13) to the packs a thread unit (39) is arranged as a separate unit, which by means of contoured thread knives (69, 70) correspondingly shaped, wave, meandering or zigzag running tear thread (24) of a thread path (71, 72) and abuts a transverse to the thread path (71, 72) extending web (33) of packaging material in the region of a blank to be produced (12, 13) applies. Apparatus according to claim 18, characterized in that the contoured thread knife (69, 70) on a correspondingly shaped support member, namely beam (85) is mounted, the suction holes (79) for holding the separated tear-open thread (24), wherein by continuing (Upward) movement of the beam (85) the severed tear thread (24) on a (bottom) side of the web (33) is pressed. Apparatus according to claim 18 or 19, characterized in that for double-track operation, two thread paths (71, 72) a cutting block (73) can be fed and within the same by two simultaneously (upward) movable thread knives (69, 70) two (contoured) tear thread (24) separable and a common double-width web (33) can be fed, preferably a first thread path (71) in horizontal plane directly and a second thread path (72) via deflection rollers (88) from the bottom in the common cutting block (73) is insertable, such that both thread paths (71, 72) in a common horizontal plane for separating a respective tear thread (24) are positioned. Apparatus according to claim 20, characterized in that both thread knives (69, 70) or their carrier - beam (85) - by a common actuator up and are movable up, namely by one of the beams (85) with the thread knives (69, 70) at both ends detecting movable up and down support arm (86).

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