Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
  • B65D75/52—Details
  • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
  • B65D75/66—Inserted or applied tearing-strings or like flexible elements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
  • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
  • B65B61/182—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying tear-strips or tear-tapes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
  • B65D77/003—Articles enclosed in rigid or semi-rigid containers, the whole being wrapped
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
  • B65D85/07—Containers, packaging elements or packages, specially adapted for particular articles or materials for compressible or flexible articles
  • B65D85/08—Containers, packaging elements or packages, specially adapted for particular articles or materials for compressible or flexible articles rod-shaped or tubular
  • B65D85/10—Containers, packaging elements or packages, specially adapted for particular articles or materials for compressible or flexible articles rod-shaped or tubular for cigarettes

Definitions

• the invention relates to a cuboid pack, in particular a cigarette pack, with an outer wrapping made of film and with a finite tear thread attached to the outer wrapper. Furthermore, the invention relates to a method and an apparatus for producing such packs.
• Packs of different shapes and designs are often provided with an outer wrapping made of film or a comparable packaging material to protect the contents of the pack.
• an outer wrapping made of film or a comparable packaging material to protect the contents of the pack.
• this is often provided with a tear thread or tear strip, which is attached to the outer wrapper by gluing or sealing. This can be severed by grasping the tear thread at one end of the handle and thus removed.
• the invention is concerned with such packs, in particular with cigarette packs in the form of a cuboid hard pack (made of thin cardboard).
• the invention is based on the object of attaching a tear thread or tear strip to the outer covering of a pack such that the outer covering as a whole is reliably removed when the tear thread is actuated.
• the package according to the invention is characterized in that the tear thread extends approximately diagonally from an (upper) package corner to a (lower) package corner in the area of a large front wall and / or a corresponding rear wall of the package.
• the (approximately) diagonal course of the tear thread in the area of at least one of the large-area packing walls ensures that the outer wrapping is optimally severed by the tear strip, so that the remaining wrapping parts can be removed in a simple manner via packing corners.
• the invention is therefore particularly suitable for cigarette packs of the hinged box type with shrink film as the outer wrapper.
• the tear-open thread is preferably arranged in such a way that a transverse, rectilinear thread section is formed in the area of narrow, upright side surfaces, namely adjacent to an end wall on the one hand and to a bottom wall on the other hand, and that these thread sections in each case connect diagonal thread sections of the front wall and rear wall which are in the same direction ,
• a specialty is the production of a (foil) sheet with continuous tear thread or tear strip as well as cuts for outer wrappings.
• the tear thread or tear strip is applied to the latter during continuous transport of the material web made of film, paper or the like, the tear thread being moved transversely to the conveying direction of the (film) web by an exactly controlled thread guide according to the thread configuration to be produced ,
• the continuous tear thread gets an almost meandering shape on the material track, with rounded transitions.
• thread sections that is to say finished tear strips or tear strips with regard to shape and length, are applied to the continuous (film) web.
• the tear strips are separated from a thread web by a contoured cut and placed directly on the web in accordance with the position of a blank for the outer covering.
• the inventive device for applying a continuous tear thread or tear strip onto a continuously moving web has a special guide member for the tear-open thread on, 'namely with a guide roller.
• This has a double function, namely serves to put the tear thread on the web and at the same time as a guide.
• the guide roller is moved by a controlled gear in the direction transverse to the web or the conveying direction thereof, so that the tear thread is transferred to the web in a curved configuration.
• the drive of the tear thread drawn from a thread bobbin is also controlled, taking into account the relative movement between the web, which is preferably conveyed continuously and at a uniform speed, 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 cutting knife, which separates a tear thread shaped according to the invention from a thread web fed in the transverse direction at each work cycle while the web or a web section is at a standstill, and positions it precisely on the ( Film) creates in the area of a blank to be separated from this.
• FIG. 1 shows a pack, namely a cigarette pack, with an outer wrapper in a perspective view
• FIG. 2 shows a section of a web with tear-open thread applied for the production of blanks as an outer covering
• FIG. 3 shows a device, namely a packaging machine, for attaching outer wrappings to cigarette packs
• FIG. 4 shows a detail of the packaging machine according to FIG. 3, namely a unit for applying tear threads to a (film) web,
• FIG. 5 shows a detailed view of the unit according to FIG. 4 in the sectional plane VI-VI,
• FIG. 6 shows a detailed view of the unit according to FIG. 4 in a sectional plane V-V
• FIG. 7 shows a further view of the unit according to FIG. 4 according to arrow VII
• 8 shows a detail of the representation according to FIG. 7 - area VIII (on an enlarged scale)
• FIG. 9 shows a further detail in a side view of FIG. 7 according to arrow IX,
• FIG. 10 shows a simplified illustration analogous to FIG. 4 of an alternative embodiment of the unit
• FIG. 11 shows another embodiment of a pack with an outer wrapper, namely a cigarette stick, in a perspective view
• FIG. 12 shows a blank for an outer wrapping for the package according to FIG. 11,
• FIG. 13 shows a section of a (film) web with prefabricated tear thread or strips applied in sections
• FIG. 14 shows a partial area of a device for producing and applying tear thread according to FIG. 13, in a side view
• FIG. 15 shows a detail of the device according to FIG. 14 in horizontal section or in plan view corresponding to horizontal section XV-XV in FIG. 17,
• FIG. 16 and FIG. 17 a detail of the device according to FIG. 14 in different positions of organs in vertical section corresponding to section plane XVI-XVI in FIG. 14.
• cigarette packs are shown as preferred applications, namely a hinge-lid pack 10 and a pack for cigarette packs, namely a cigarette rod 11 (FIG. 11).
• the aforementioned packs are hard packs made of (thin) cardboard and each surrounded by an outer wrapper. This consists of a thin, clear plastic film, in particular Shrink films, made of cellophane, can also consist of other packaging material, for example paper.
• a blank 12, 13 for forming the outer casing consists of front wall 14, rear wall 15 and side walls 16, 17. Furthermore, the blanks 12, 13 form end walls 18 or 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 the rear wall 15, while the opposite side wall 17 consists of an outer side tab 20 and an inner side tab 21.
• the two side tabs 20, 21 overlap one another and are connected to one another by sealing or gluing.
• End wall 18 and bottom wall 19 consist of end tabs 22, 23 that extend over the full length of the blank 12, 13.
• the blank 12, 13 formed in this way is folded in a known manner in a first folding step in a U-shape around the pack, namely the folding box 10 or the cigarette rod 11.
• the side flaps 20, 21 which initially protrude over the pack are folded in succession with partial overlap (FIG. 1, FIG. 11).
• the end flaps 22, 23 are then folded to form the end walls 18 and the bottom wall 19, respectively.
• a tear thread 24 is attached to the pack or to its outer wrapper.
• the optionally strip-shaped tear thread 24 is preferably connected to the inside of the blank 12, 13 by gluing or sealing.
• a tab 25 formed from the blank 12, 13 is formed, which extends in the finished package on the edge of the side wall 17 or the side flap 20 and can thus be grasped by hand. With the aid of this grip tab 25, the tear thread 24 can be removed by severing the outer covering or the blank 12, 13.
• the tear thread 24 is attached to the blank 12, 13 in a special configuration such that the outer covering is severed by the severed tear thread 24 essentially diagonally in the area of the large-area packaging sides. In this way, formed corner caps of the outer covering can be removed in a simple manner “over a corner”.
• the (one-piece) tear thread 24 is positioned on the blank 12, 13 in such a way that in the area of the front wall 14 on the one hand and the rear wall 15 on the other hand there is an approximately diagonal course (in a common imaginary diagonal plane). Thread sections 26, 27 accordingly extend approximately from a lower packing corner 28 to the diagonally opposite packing corner 29.
• the thread section 26, 27 each runs at a short distance from the relevant packing corner 28, 29 and thus from the bottom 19 on the one hand and the end wall 18 on the other hand.
• the tear thread forms a rounding 30 as a transition into transverse, straight thread sections 31, 32.
• a continuous thread section 31 extends in the area of the one-piece side wall 16 , across this and immediately 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 it - in the region of the side wall 17.
• This thread section 32 consists of two partially overlapping sections. The tear thread is accordingly arranged so that the ends of it overlap.
• a grip tab 25 is attached to the section of the thread section 32.
• a special feature is the production of the blanks 12, 13 from a continuous web 33, from which blanks 12, 13 are cut off in a cutting unit 34 of the packaging machine (FIG. 3) along a separating cut 68.
• the tear thread 24 is applied to the continuous web 33, preferably with a continuous, continuous conveying movement.
• the tear thread 24, which is also fed continuously, is guided and applied to the web 33 in such a way that the tear thread 24 has an approximately meandering or undulating configuration (FIG. 2).
• the thread sections 31, 32 formed in the longitudinal direction of the web 33 are of unequal length.
• the thread section 32 facing the end wall 18 has a greater length than the thread section 31 in the region of the side wall 16 because of the side tabs 20, 21 lying next to one another.
• the application of the tear thread 24 to the continuous web 33 contains a special process engineering and apparatus feature.
• the tear thread 24 is transferred to the web 33 by a guide member, in the present case by a rotating guide roller 35 which is attached to a holder.
• the tear thread 24 is fed in such a way that a sufficient thread section lies against the circumference of the guide roller 35. This can be moved transversely to the continuously conveyed web 33 by means of a special, controlled gear such that the tear thread 24 is applied to the web 33 in a manner 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.
• the web 33 drawn off from bobbins 38 is then fed to a thread unit 39. This is shown by way of example in FIG. 4.
• the tear thread 24 is pulled off a thread bobbin 40.
• the tear thread 24 is expediently provided on one side, namely on the side facing the web 33, with an adhesive.
• the thread bobbin 40 is driven in a rotating manner, in this example with a constant conveying speed of the pulled-open tear thread 24.
• the tear thread is guided over compensating rollers 41 which are movable relative to one another and compensate the conveyance of the tear strip 24 when starting or stopping the packaging machine, that is to say in operating situations that deviate from the standard operating mode.
• the actual thread assembly consists of two gear units 42, 43.
• the gear unit 42 serves to compensate for the conveying speed of the tear thread 24 due to the relative movement between the web 33 and the tear thread 24.
• the gear unit 43 guides the controlled transverse movements of the transfer member, ie the guide roller 35, for the tear thread 24 through.
• the gear unit 42 With a constant take-off speed of the tear thread 24 in the area of the thread bobbin 40, the gear unit 42 must bring about an increased conveying speed of the tear thread 24 during the formation of the thread section 26 and 27. In the area of the thread In sections 31 and 32, the conveying speed of the tear thread 24 essentially coincides with that of the web 33.
• the gear unit 42 forms an alternating supply of thread length, which is reduced when the conveying speed is increased and is rebuilt at the lower conveying speed.
• This thread supply consists of a thread loop due to deflection around a movable dancer roll 44. This is slidably attached to a carrier 45, namely in a slot guide 46. Two further, fixed deflection rollers 47, 48 for the tear thread are attached to the carrier 45.
• the dancer roller 44 is mounted centrally between the deflection rollers 47, 48, but offset from them, so that the distance from the deflection rollers 47, 48 becomes larger or smaller when the dancer roller 44 is displaced.
• the dancer roll 44 is controlled in exact accordance with the movement sequence of the web 33 and the tear thread 24.
• the dancer roller 44 is assigned a servo motor 49 as the drive element. This is connected to the dancer roller 44 via a gear, specifically via a crank gear 50.
• FIG. 9 shows the side of the carrier 45 facing away from FIG. 4 with the crank mechanism 50, a connecting rod 51 being 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 two ways: on the one hand, it is about the required movements of the guide roller 35 transversely to the web 33 and, on the other hand, it is about the correct angular position of the guide roller 35, such that it is on the Angular position of the tear thread 24 is aligned with the web 33.
• the guide roller 35 is mounted for the transverse movement on a transversely movable carrier, namely on a guide carriage 53. This can be moved on a transverse guide 54.
• the drive takes place via a pull rod 55, which can be driven by a servo motor or is controlled by a curve via a support roller.
• the guide roller 35 is fastened to the guide carriage 53 with a support piece 56, namely with a fork-shaped, pivotable holder 57 on the support piece 56. outsourced.
• the holder 57 can be rotated or pivoted about an axis with the guide roller 35, namely transversely to the axis of the guide roller 35.
• a swivel gear which consists of a steering rod 58, which is connected via a joint 59 to a swivel arm 60 of the holder 57, is attached below the support piece 56.
• the control of the handlebar 58 is also not shown here and is carried out analogously to the control of the pull rod 55 in such a way that the guide roller 35 is always aligned in the feed direction of the tear thread 24.
• 6 shows a position of the guide roller 35 during the formation of the oblique thread section 26, 27.
• the guide roller 35 is designed in a special way so that it can fulfill a double function, namely guiding the tear thread 24 on the one hand and pressing it onto the web 33 on the other hand.
• the guide roller 35 has lateral elevations which in the area of the tear thread 24 contact the Lane 33 are not effective.
• the guide roller 35 consists of three individual rollers 61, 62, 63.
• the central single roller 62 receives the tear thread 24 on the circumference, while the lateral individual rollers 61, 63 take over the function of flanged wheels.
• the individual rollers 61, 62, 63 can be rotated independently of one another and are mounted on a fixed support shaft 64 by means of roller bearings.
• the support axis 64 consists of offset sections, similar to a crank axis.
• the single rolls 61, 62, 63 are arranged such that the central single roll 62 rotates centrally to an imaginary axis, while the lateral single rolls 61, 63 rotate offset, with the result that in the region of the transfer of the tear thread 24 to the web 33 the Single rollers 61, 62, 63 are always aligned with their peripheral surfaces in a peripheral plane (Fig. 8).
• a support roller 36 is attached below the guide roller, namely below the support piece 56, which causes a slight deflection and guidance of the tear thread 24 to the guide roller 35.
• the conveying movement of the tear thread 24 in the area of the transfer to the web 33 results from the conveying speed of the web 33. This pulls the tear thread 24 through the adhesive connection.
• the transfer of the tear thread 24 to the Web 33 takes place in the region of a deflecting roller 65 of web 33.
• the guide roller 35 bears against this.
• the deflection roller 65 is mounted elastically, namely on a swivel arm 66 which is loaded by a compression spring 67 in the direction of the guide roller 35.
• FIG. 10 An alternative to the thread unit 39 according to FIG. 4 is shown in FIG. 10.
• the gear unit 43 corresponds to the embodiment according to FIG. 4.
• a change has been made in the area of the gear unit 42.
• the dancer roll 44 with servo drive is replaced by a compensating element which only rotates.
• This rotating shim 37, on the circumference of which the tear thread 24 abuts, brings about a length compensation in accordance with the different conveying speeds of the tear thread 24 due to the eccentric shape.
• the packaging machine and its units are set up for double-lane operation.
• the (double width) web 33 consists of two cutting webs.
• the thread unit 39 is set up for the simultaneous attachment of two tear threads 24.
• two thread bobbins 40 of the same equipment are also provided, namely arranged one above the other.
• the other organs of the thread unit 39 or the gear units 42 and 43 are adjusted to the processing of the two tear threads 24 either by appropriate dimensioning or by a double arrangement.
• two guide rollers 35 are accordingly provided, which are actuated or adjusted simultaneously by common organs.
• the cigarette rod 11 according to FIG. '11 is manufactured in an analogous manner to the folding box 10 with respect to the outer wrapper.
• the blank 12 (FIG. 12) is designed in such a way that the obliquely directed thread sections 26, 27 have a proportionately greater length in relation to the thread sections 31, 32. Otherwise, the outer wrappings are structurally identical.
• the tear thread 24 or tear strip can also be made in sections and fed to a single blank 12 or the web 33 made of film or the like (FIGS. 13 to 17). Complete ripcord 24 are each produced and applied to web 33.
• the individual Tear-open thread 24 has the same contour as in the exemplary embodiment according to FIG. 1, FIG. 2. However, the tear-open thread extends with one piece of thread section 32 into grip tab 25. Another end of thread section 32 lies at a distance from grip tab 25 of the adjacent one Blank 12 so that the tear thread 24 is attached to the blank 12 in a staggered manner.
• tear thread 24 is completely manufactured in the present contour, other designs are also possible, in particular without a rounding 30, that is to say for example in a zig-zag design or with other corners.
• the thread unit 39 for producing and attaching tear thread 24 works with (at least) one separating knife, namely a thread knife 69, 70 for separating a contoured tear thread 24 from the front end of a material web, namely a thread path 71, 72.
• the thread knife 69, 70 has a shape that corresponds to that of the tear thread 24 to be separated, in the present case, therefore, approximately V or meandering.
• the thread web 71, 72 is fed transversely to the web 33 to a cutting block 73 of the thread unit 39.
• the thread knife 69, 70 can be moved up and down within the cutting block 73.
• a front end of the thread path 71, 72 is kept available as a protrusion within the cutting block 73, corresponding to the width of the tear thread 24 to be separated.
• the thread path 71, 72 runs inside the cutting block 73 in a slot-like guide 74 or between an upper and lower guide roller 75, 76
• the thread knife 69, 70 is moved upward from a lower starting position (FIG. 17).
• Above the thread web 71, 72 a fixed counter knife 77 is formed, which has the same contour as the thread knife 69, 70.
• the separating cut is carried out by the relative movement, accordingly a tear thread 24 is cut off as the front end of the thread web 71, 72.
• the thread knife 69, 70 feeds the detached tear thread 24 directly to the web 33 with continued (upward) movement and places or presses the tear thread 24 against the underside of the web 33 (FIG. 16).
• the thread knife 69, 70 is designed as a (shaped, contoured) support or bar 85 which is in an upright position also contoured recess 78 of the cutting block 73 can be moved up and down.
• the bar 85 is provided with suction bores 79 on the upper side adjacent to the thread knife 69, 70.
• the suction bores 79 are connected to a vacuum source at least during the transport phase of the tear thread 24.
• the web 33 is conveyed through the cutting block 73 in an (upper) guide slot 80.
• an (elastic) pressure piece 81 is formed in the cutting block 73 as a counter bearing when the tear thread 24 is pressed on.
• the pressure piece 81 can be heated to seal the tear thread 24.
• the web 33 is also continuously conveyed in this embodiment.
• a web section 82 in the area of the thread unit 39 or the cutting block 73 is controlled in such a way that there is a temporary standstill, namely during the application of the tear thread 24.
• the web 33 is for this purpose synchronously pivoted by two reciprocating compensation pendulum 83, 84 out. This mechanism, which is known per se, causes the web section 82 to come to a standstill despite the essentially continuous drive.
• contoured bars 85 as carriers of the thread knives 69, 70 are each attached to a (horizontal) support arm 86. This is mounted in a machine frame and can be moved up and down in an elongated hole 87 in order to enable the separation process for the tear thread 24 and the feed to the web 33.
• the device shown in FIGS. 14 to 17 is also set up for two-lane operation. Accordingly, two thread webs 71, 72 are fed to a correspondingly designed cutting block 73, in an arrangement one above the other.
• the upper thread path 71 is fed directly into the cutting block 73, while the lower thread path 72 initially runs below the cutting block 73 and is then directed upwards via deflecting rollers 88 and then into a horizontal plane.
• the web 33 is double-wide, so that two blanks 12 lie next to one another in the transverse direction. LIST OF REFERENCE NUMBERS

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Auxiliary Devices For And Details Of Packaging Control (AREA)
• Cartons (AREA)
• Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
• Packages (AREA)
• Making Paper Articles (AREA)
• Wrapping Of Specific Fragile Articles (AREA)

Priority Applications (9)

Applications Claiming Priority (4)

Related Child Applications (2)

Publications (2)

Family

ID=26010144

Family Applications (1)

Country Status (8)

Cited By (3)

Families Citing this family (12)

Citations (4)

• 2002
  • 2002-09-12 US US10/489,356 patent/US20060054670A1/en not_active Abandoned
  • 2002-09-12 EP EP02777078A patent/EP1425232B1/de not_active Expired - Lifetime
  • 2002-09-12 PL PL367999A patent/PL201393B1/pl unknown
  • 2002-09-12 CN CNB028178971A patent/CN100488851C/zh not_active Expired - Fee Related
  • 2002-09-12 JP JP2003528695A patent/JP4184271B2/ja not_active Expired - Fee Related
  • 2002-09-12 BR BRPI0212473-4A patent/BR0212473B1/pt not_active IP Right Cessation
  • 2002-09-12 AU AU2002338674A patent/AU2002338674A1/en not_active Abandoned
  • 2002-09-12 WO PCT/EP2002/010240 patent/WO2003024834A1/de active Application Filing

Patent Citations (4)

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