DE102007042742A1 - Forming method for tubular inner package of triangular-section group of cigarettes, involves folding second portion of sheet onto second lateral wall and third lateral wall, and partly onto previously folded first portion of sheet - Google Patents

Abstract

The forming method involves folding the ends of a first portion of a sheet (5) of foil packing material onto the second lateral wall (16b) and third lateral wall (16c) of a cigarette group (4). An opposite second portion of the sheet is folded onto the second lateral wall and third lateral wall, and partly onto the previously folded first portion of the sheet to form a tubular inner package with one open end at a second end wall (17b).

Description

TECHNICAL AREA

The The present invention relates to a method of folding a sheet of packaging material around a group of cigarettes with triangular cross section.

STATE OF THE ART

Rigid cigarette packs with triangular cross-section and hinged lid, as shown for example in the patent EP1240088B1 are now being produced for several years.

at a rigid cigarette packet with hinged lid is the Group of cigarettes in a bow of inner foil packaging material wound on which no adhesive is applied; a bow of rigid, outer packaging material is around the Sheet folded from inner packaging material to a cup-shaped Define container having an open top end, which is closed by a hinged lid; and finally becomes an impermeable wrap that makes a bow of transparent Plastic packing material covers to the bow from outside Packaging material folded and heat-sealed.

The sheet of inner film packaging material always has the shape of an elongated rectangle and is first folded into a U around the group of cigarettes, transverse or longitudinal depending on the design of the cigarette packaging machine. An example of folding a sheet of packaging material around a group of cigarettes is in the patent GB785076 described.

Of the Sheet of inner packaging material has an upper tear-off portion on, which is limited by a demolition line and for easy access to the cigarettes is torn off when the cigarette pack is opened. The demolition line that the Defined upper tear section is normally straight and is formed by a cutting wheel or rotary cutter on the packaging machine.

If the arc of inner packaging material along to a U is folded around the group of cigarettes, the demolition line, which defines the upper tear-off section, a complicated one Have shape and be very difficult to form on the machine.

Furthermore The upper tear-off portion of the sheet of inner film packaging material is included currently marketed rigid cigarette packs with triangular Cross section and hinged lid not always easy to remove.

DISCLOSURE OF THE INVENTION

It It is an object of the present invention to provide a method of folding a sheet of wrapping material around a group of cigarettes provide triangular cross-section, which serves the above to eliminate mentioned disadvantages.

According to the The present invention is a method for folding a sheet or sheets of packaging material around a group of cigarettes triangular cross section according to the enclosed Claims provided.

BRIEF DESCRIPTION OF THE DRAWINGS

A Series of non-limiting embodiments The present invention will be described purely by way of example with reference to FIG the accompanying drawings are described in which:

1 shows a front perspective view of a cigarette pack in a closed configuration made in accordance with the present invention;

2 a rear perspective view of the pack of 1 in a closed configuration;

3 a front perspective view of the pack of 1 in an open configuration with an upper tear-away portion of an inner package removed;

4 a perspective view of an inner packaging of the pack of 1 shows;

5 a perspective view of the inner packaging of 4 shows, in which an upper tear-off is removed;

6 shows a spread-out plan view of a sheet of film packaging material with the fold lines marked;

7 - 10 show schematic, perspective views of successive steps in which the sheet of film packaging material of 6 around a group of cigarettes is folded to the inner packaging of 4 to build;

11 shows a front perspective view of the package of 1 in an open configuration and before removing an upper ab tear portion of the inner packaging shows;

12 a front perspective view of the pack of 1 in an open configuration with an upper tear-away portion of the inner package removed;

13 a front perspective view of a further variation of the package of 1 in an open configuration and before removal of an upper tear-off portion of the inner package;

14 a front perspective view of the pack of 13 in an open configuration with an upper tear-away portion of the inner package removed.

PREFERRED EMBODIMENTS THE INVENTION

The number 1 in 1 in their entirety denotes a rigid cigarette packet with equilateral, triangular cross-section, which is a cup-shaped bottom container 2 and an inner packaging 3 (partly in 3 and completely in 4 shown) in the container 2 is housed. The inner packaging 3 is by a parallelepiped-shaped group 4 of cigarettes with an equilateral, triangular cross-section and through a sheet 5 of foil packaging material (folded in 4 and flat in 6 shown) that defines the group 4 completely encloses cigarettes. The container 2 has an open upper end; and a cup-shaped lid 6 that is attached to the container 2 along a hinge 7 ( 2 ) is articulated to itself with respect to the container 2 between an open position ( 3 ) and a closed position ( 1 and 2 ), which open or close the upper end.

If the lid 6 in the closed position, the container has 2 the shape of a parallelepiped with triangular cross-section, which is an upper wall 8th and a parallel opposite bottom wall 9 includes; and three side walls 10 , Three rounded longitudinal edges or longitudinal edges 11 are between the sidewalls 10 defined, and six straight transverse edges or transverse edges 12 are between the upper and lower wall 8th . 9 and the side walls 10 Are defined.

The package 1 also includes a collar or neck 13 who is around the group 4 of cigarettes and on the bow 5 of film wrapping material is folded and with the inside of the container 2 bonded to partially protrude from the open upper end and a corresponding inner surface of the lid 6 to engage when the lid 6 is in the closed position.

As it is in 4 shown includes the inner packaging 3 an upper tear-off section 14 passing through a demolition line 15 is limited and if the inner packaging 3 first opened, for easy access to the group 4 is torn off from cigarettes (as it is eg in 3 and 5 is shown).

As it is in 6 shown is the bow 5 of packaging material in the form of an elongated rectangle and has two parallel, opposite long sides and two parallel, opposite short sides.

As it is in 7 shown has the group 4 of cigarettes is substantially in the shape of a parallelepiped with a triangular cross-section and comprises three right-angled side walls 16 (only two are in 7 shown) defined by the cylindrical side walls of the cigarettes; and two parallel, opposite triangular end walls 17 (only one is in 7 shown) defined by the flat ends of the cigarettes. Three longitudinal edges or longitudinal edges 18 are between the three side walls 16 defined, and six transverse edges or transverse edges 19 are between the three side walls 16 and the two end walls 17 Are defined.

Now with special reference to 7 - 10 described the way in which the bow 5 of packaging material around the group 4 folded from cigarettes to the inner packaging 3 from 4 to build.

As it is in 7 is shown at the beginning of a first end wall 17a the group 4 of cigarettes with the flat bow 5 brought into contact by packaging material, leaving a first sidewall 16a the group 4 of cigarettes perpendicular to the long sides of the bow 5 of packaging material and parallel to the short sides of the sheet 5 of packaging material, and leaving a second side wall 16b and a third sidewall 16c the group 4 of cigarettes with respect to both the long sides and the short sides of the bow 5 of packaging material are inclined or oblique. The first end wall 17a the group 4 of cigarettes is preferably symmetrical in the middle of the arch 5 of packaging material with respect to both the long sides and the short sides of the sheet 5 positioned by packaging material.

As it is in 8th is shown, next, a first section of the arc 5 of packaging material on the first side wall 16a folded.

As it is in 9 is shown at this point, the ends of the first section of the Bo gens 5 of packaging material coming from the first side wall 16a stand on the second side wall 16b and the third sidewall 16c folded. As it is in 9 is then shown, a second, the first portion opposite portion of the arc 5 of packaging material on the second side wall 16b and the third sidewall 16c and partially on the previously folded first section of the sheet 5 folded from packaging material to a tubular package having an open end at a second end wall 17b to build.

As it is in 10 is shown, eventually becomes the bow 5 of packaging material on the second end wall 17b folded to the folding of the bow 5 of packaging material around the group 4 from cigarettes to complete and the inner packaging 3 to build. More specifically, this includes folding the bow 5 of packaging material on the second end wall 17b a fold of the bow 5 of packaging material successively around the three transverse edges 19 the second end wall 17b ,

As it is in 1 - 10 is shown, the bow points 5 of packaging material two tear-off lines 15 each of which is parallel to and near a respective short side of the arc 5 of packaging material and an upper tear-off section 14 defined, therefore, the entire upper end of the inner packaging 3 covering, as clearly in 3 . 4 and 5 is shown. In another, not shown embodiment, the two tear lines 15 with different distances from the respective short sides of the sheet 5 arranged by packaging material. In a further, not shown embodiment, the bow 5 of packaging material two tear-off lines 15 each of which is parallel to and near a respective short side of the arc 5 of packaging material is shorter than the respective short side of the sheet 5 of packaging material and the upper tear-off section 14 Are defined.

At another, in 12 and 14 embodiment shown, the bow 5 of packaging material a demolition line 15 parallel to and near a short side of the arch 5 of packaging material and defines an upper tear-off portion 14 which therefore only has a front portion of the upper end of the inner package 3 covers.

11 (according to the 12 and 10 ) and 13 (according to the 14 ) show two ways to fold the bow 5 of packaging material on the second end wall 17b to the folding of the bow 5 of packaging material around the group 4 from cigarettes to complete and the inner packaging 3 to build. The two, in 11 and 13 shown ways to fold the bow 5 of packaging material on the second end wall 17b differ in the order in which the bow 5 of packaging material successively around the three longitudinal edges 19 the second end wall 17b is folded. More precisely, the bow becomes 5 of packaging material in the embodiment of 11 first around the rear longitudinal edge 19 (ie parallel to the hinge 7 from lid 6 ), and in the embodiment of 13 becomes the bow 5 of packaging material last around the rear longitudinal edge 19 (ie parallel to the hinge 7 from lid 6 ) folded.

The above-described method for folding a sheet 5 of packaging material around a group 4 Of cigarettes has several advantages, as it is inexpensive and easy to implement on a packaging machine and since it is mainly exclusively straight tear lines 15 used. In addition, the upper tear-off is 14 by using the above method of folding the sheet 5 of packaging material around a group 4 easy to remove from cigarettes.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 1240088 B1 [0002]
• - GB 785076 [0004]

Claims (10)

Method for folding a sheet ( 5 ) of packaging material around a group ( 4 ) of triangular-section cigarettes; the arc ( 5 ) of packaging material has the shape of an elongated rectangle and has two parallel, opposite long sides and two parallel, opposite short sides; the group ( 4 ) of cigarettes has essentially the shape of a parallelepiped with triangular cross-section and comprises three side walls ( 16 ), which are defined by cylindrical side walls of the cigarettes, and two parallel, opposite end walls (FIG. 17 ) defined by flat ends of the cigarettes; wherein three longitudinal edges or longitudinal edges ( 18 ) between the three side walls ( 16 ) are defined, and six transverse edges or transverse edges ( 19 ) between the three side walls ( 16 ) and the two end walls ( 17 ) are defined; and the method comprises the steps of: contacting a first end wall ( 17a ) the group ( 4 ) of cigarettes with the flat bow ( 5 ) of packaging material, leaving a first side wall ( 16a ) the group ( 4 ) of cigarettes perpendicular to the long sides of the sheet ( 5 ) of packaging material and parallel to the short sides of the sheet ( 5 ) of packaging material; Folding a first section of the sheet ( 5 ) of packaging material on the first side wall ( 16a ); Folding the ends of the first side wall ( 16a ), the first section of the arch ( 5 ) of packaging material on a second side wall ( 16b ) and a third side wall ( 16c ); and folding a second, opposite to the first portion portion of the sheet ( 5 ) of packaging material on the second side wall ( 16b ) and third side wall ( 16c ) and partly on the previously folded first section of the sheet ( 5 ) of packaging material to form a tubular package having an open end at a second end wall ( 17b ) to build. Method according to claim 1, and comprising the further step of folding the sheet ( 5 ) of packaging material on the second end wall ( 17b ) to the folding of the sheet ( 5 ) of packaging material around the group ( 4 ) of cigarettes to complete. The method of claim 2, wherein the step of folding the sheet ( 5 ) of packaging material on the second end wall ( 17b ) a folding of the bow ( 5 ) of packaging material successively around the three transverse edges or transverse edges ( 19 ) of the second end wall ( 17b ). Method according to claim 3, wherein the sheet ( 5 ) of packaging material first around a rear transverse edge ( 19 ) parallel to a hinge ( 7 ) of a lid ( 6 ) is folded. Method according to claim 3, wherein the sheet ( 5 ) of packaging material last around a rear transverse edge ( 19 ) parallel to a hinge ( 7 ) of a lid ( 6 ) is folded. Method according to one of claims 1 to 5, wherein the first end wall ( 17a ) the group ( 4 ) of cigarettes symmetrical in the middle of the arch ( 5 ) of packaging material with respect to both the long sides of the sheet ( 5 ) of packaging material as well as the short sides of the sheet ( 5 ) of packaging material is positioned. Method according to one of claims 1 to 6, and comprising the further step of forming two tear-off lines ( 15 ) on the bow ( 5 ) of packaging material, each parallel to and near a respective short side of the sheet ( 5 ) of packaging material and an upper tear-off section ( 14 ) of the bow ( 5 ) defined by packaging material; the upper tear-off section ( 14 ) an entire upper end of an inner package ( 3 defined by the fact that the arc ( 5 ) of packaging material around the group ( 4 ) is wrapped by cigarettes. Method according to claim 7, wherein the two tear-off lines ( 15 ) with different distances from the respective short sides of the sheet ( 5 ) of packaging material. Method according to claim 7 or 8, wherein each tear-off line ( 15 ) is shorter than the respective short side of the sheet ( 5 ) of packaging material. Method according to one of claims 1 to 6, and comprising the further step of forming a tear line ( 15 ) on the bow ( 5 ) of packaging material parallel to and near a short side of the sheet ( 5 ) of packaging material and which has an upper tear-off section ( 14 ) of the bow ( 5 ) defined by packaging material; the upper tear-off section ( 14 ) only a front portion of an upper end of an inner package ( 3 defined by the fact that the arc ( 5 ) of packaging material around the group ( 4 ) is wrapped by cigarettes.