EP3138785B1 - Procédé et système pour fabrication d'une poche à tabac - Google Patents

Procédé et système pour fabrication d'une poche à tabac Download PDF

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Publication number
EP3138785B1
EP3138785B1 EP16187086.0A EP16187086A EP3138785B1 EP 3138785 B1 EP3138785 B1 EP 3138785B1 EP 16187086 A EP16187086 A EP 16187086A EP 3138785 B1 EP3138785 B1 EP 3138785B1
Authority
EP
European Patent Office
Prior art keywords
adhesive
film material
flap
tobacco
station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16187086.0A
Other languages
German (de)
English (en)
Other versions
EP3138785B2 (fr
EP3138785A1 (fr
Inventor
Jan WOLF
Martinus Johannes BULK
Jacob VOLKERS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sluis Cigar Machinery BV
Original Assignee
Sluis Cigar Machinery BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Sluis Cigar Machinery BV filed Critical Sluis Cigar Machinery BV
Priority to PL16187086T priority Critical patent/PL3138785T3/pl
Publication of EP3138785A1 publication Critical patent/EP3138785A1/fr
Application granted granted Critical
Publication of EP3138785B1 publication Critical patent/EP3138785B1/fr
Publication of EP3138785B2 publication Critical patent/EP3138785B2/fr
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D33/00Details of, or accessories for, sacks or bags
    • B65D33/16End- or aperture-closing arrangements or devices
    • B65D33/18End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
    • B65D33/22End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps using heat-activatable adhesive
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B29/00Packaging of materials presenting special problems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/02Applying adhesives or sealing liquids
    • B65B51/023Applying adhesives or sealing liquids using applicator nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10Applying or generating heat or pressure or combinations thereof
    • B65B51/14Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B65B51/146Closing bags
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/06Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
    • B65B9/08Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it in a web folded and sealed transversely to form pockets which are subsequently filled and then closed by sealing
    • B65B9/093Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it in a web folded and sealed transversely to form pockets which are subsequently filled and then closed by sealing the web having intermittent motion
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24FSMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F23/00Cases for tobacco, snuff, or chewing tobacco
    • A24F23/02Tobacco pouches
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00Flexible containers made from webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00Flexible containers made from webs
    • B31B2155/001Flexible containers made from webs by folding webs longitudinally
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00Flexible containers made from webs
    • B31B2155/001Flexible containers made from webs by folding webs longitudinally
    • B31B2155/0014Flexible containers made from webs by folding webs longitudinally having their openings facing transversally to the direction of movement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00Shape of flexible containers
    • B31B2160/10Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2170/00Construction of flexible containers
    • B31B2170/10Construction of flexible containers interconnected
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • B31B70/60Uniting opposed surfaces or edges; Taping
    • B31B70/62Uniting opposed surfaces or edges; Taping by adhesives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • B31B70/74Auxiliary operations
    • B31B70/79Coating; Impregnating; Waterproofing; Decoating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B59/00Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5855Peelable seals

Definitions

  • the present invention relates to a method and system of making tobacco pouches.
  • tobacco pouches are made from a film material which is provided on a roll.
  • the film material on the roll is pre-printed and may be a multi-layer or a single layer film material.
  • the film material is unrolled from the roll and guided through an assembly line (or system) for making the tobacco pouches.
  • the film material is folded onto itself in order to form the compartments of the tobacco pouches.
  • seams are made with a heat welding device.
  • the film material melts and forms a weld which interconnects two parts of the film material which are folded onto one another.
  • the seams extend transverse to the main direction of the film material and form the left side and right side of a the compartment of each tobacco pouch.
  • the tobacco pouches are cut along predefined cutting lines into individual tobacco pouches. Each cut divides the seams in a first and second seam section, wherein the first seam section forms the left side of a leading pouch and the second seam section forms the right side of a trailing pouch.
  • the making of the tobacco pouches is often integrated with a filling assembly line, so that the tobacco pouches are filled with tobacco directly after they are made.
  • the tobacco pouches have a mouth which should be open during filling. Further, the mouth should be closed directly after filling in order to keep the tobacco fresh. Furthermore, a user should be able to open the mouth without too much difficulty when he starts to take tobacco from a new tobacco pouch.
  • a non-permanent seal in the form of wax is generally used to close the mouth. Both sides of the film which engage one another at the mouth are provided with a wax layer.
  • the wax acts as a kind of adhesive and keeps the mouth closed before first use. This keeps the tobacco fresh.
  • the adhesive strength is weak enough to allow the user to open the mouth. In this way, the wax creates a non-permanent seal at the mouth.
  • the wax is generally applied on the film material upstream of the pouch making assembly line and is often provided on the film material in two long bands, which extend lengthwise of the film.
  • the wax bands are as long as the film itself.
  • the wax bands are generally provided by the manufacturer of the film material which can be a different party as the party which makes the pouches and fills the pouches with tobacco. This method of applying the wax has a proven track record and has been used for a number of years.
  • Document EP 1 683 763 A2 for example discloses a method of manufacturing a tobacco pouch, the method comprising: unrolling a film material from a roll, conveying the unrolled film material along an adhesive strip application station, and applying strips of adhesive material on the film material, folding the film onto itself along at least one bottom fold which extends lengthwise of the film material, conveying the film material along a first heat welding station and providing a right seam and a left seam in the first heat welding station along at least a right side and a left side of the tobacco pouch which is to be formed, the left and right seam extending transverse to a main longitudinal direction of the film material, conveying the film material along a cutting station and cutting the film material at regular intervals to form individual tobacco pouches.
  • EP 1 683 736 A2 also discloses a tobacco pouch making system for performing such a method. Furthermore, EP 2 532 513 A2 discloses a method and related system for making tobacco pouches, wherein the film for making the pouches is provided with strips of adhesive material positioned in rows at regular intervals.
  • the wax bands run along the entire length of the film.
  • the seams are made with heat welding, the seams cross the bands of wax.
  • the heat welding does not result in a high quality weld, because the wax prevents a high quality weld.
  • the two parts of the film material may come loose quite easily, resulting in holes in the compartment at the left and right side of the pouch. The crossings form weak spots. This is explained further in the figures relating to the prior art.
  • Another aspect of the background of the present invention is that tobacco pouches are subject to increasingly strict legal requirements.
  • the size of the flap is regulated in the sense that the size of the flap is reduced to a certain maximum size.
  • many users wish to fold the flap around the tobacco pouch after first use of the tobacco pouch, and this requires a rather large flap.
  • the limited size of the flap according to health warning regulations therefore may have a negative effect on the user friendliness of the tobacco pouch. It was recognized in the present invention that there is no good solution for this problem with current systems for making tobacco pouches.
  • the known method does not allow much variations in the position of the wax bands in the pouch. It was recognized that a different method of applying wax on the film material could result in a more versatile system and method of making tobacco pouches and overcomes the known disadvantage of the prior art.
  • the invention provides a method of manufacturing a tobacco pouch, the method comprising:
  • tobacco pouches can be made without weak spots in the side seams.
  • the flap can be made to fold onto itself.
  • greater variations in non-permanent seals are possible, because the adhesive nozzles can be configured to apply adhesive in a variety of ways.
  • the adhesive regions of at least one row meet the left seam and right seam or end at a distance from the left seam and right seam and do not extend into the left seam and right seam.
  • each adhesive region of adhesive material comprises opposite ends, wherein the ends meet the right seam and left seam or are located at a distance from the right seam and left seam.
  • each adhesive region is elongate and has a shape of a band, wherein the elongate bands extend parallel to the main longitudinal direction of the film material.
  • the method comprises applying first bands and second bands of adhesive at regular intervals along the film, wherein the first and second bands of adhesive are folded onto each other by the making of the at least one bottom fold.
  • the first bands and second bands of adhesive have a substantially same length and a substantially same width and are provided on either side from the bottom fold at a same distance from the bottom fold.
  • the film material on the roll is free of any bands of adhesive.
  • the adhesive is wax. Wax has very good properties for forming non-permanent seals.
  • the adhesive is hot-melted and subsequently applied as hot-melt.
  • the liquid or almost liquid form of the hot-melt adhesive makes it suitable to be applied via nozzles which engage the film material.
  • the method comprises activating the one or more adhesive nozzles for a predetermined first period of time, and de-activating the adhesive nozzles for a predetermined second period of time, and repeating these steps for each tobacco pouch.
  • the method comprises:
  • the method comprises:
  • At least one flap adhesive region straddles the cut line along which the film material is cut into individual pouches, the method comprising cutting through the flap adhesive regions during the cutting of the film material to form the individual pouches.
  • the at least one flap adhesive region has the shape of an elongate band, wherein the at least one flap adhesive region extends at right angles to a main longitudinal direction of the film material.
  • the adhesive is applied to the film material while the film material is being conveyed along the at least one adhesive nozzle.
  • the nozzles engage the film material while the film material is being conveyed along the at least one adhesive nozzle. To this end, the nozzles are pressed against the film material. The pressing is carried out gently.
  • the adhesive is applied to the film material while the film material is being conveyed along the at least one adhesive nozzle in an upward direction, in particular vertically upward.
  • the present invention further relates to a tobacco pouch making system for making tobacco pouches, the tobacco pouch making system comprising:
  • the adhesive application station comprises a control unit configured for activating and de-activating the adhesive nozzle for applying at least one row of elongate bands of adhesive at regular intervals and with adhesive-free zones between the adhesive bands, wherein the at least one row of elongate adhesive bands extends parallel to a main longitudinal direction of the film material.
  • the tobacco pouch making system comprises a first adhesive nozzle and a second adhesive nozzle positioned at a distance from one another and configured for applying a first row of adhesive regions and a second row of adhesive regions at regular intervals along the film, wherein in particular the folding station is configured for folding the first and second adhesive regions onto each other.
  • the first and second adhesive nozzles are configured for applying the first adhesive regions and second adhesive regions with a substantially same length and a substantially same width and at a substantially same distance from the bottom fold.
  • an outflow opening of each nozzle has an elongate shape, having a length and a width, wherein the length of the outflow opening is more than 10 times the width, in particular more than 30 times the width.
  • each nozzle has a single outflow opening.
  • the tobacco pouch making system comprises a further heating element for heating the flap adhesive regions of the folded flap in order to provide a non-permanent seal which interconnects the front flap part onto the rear flap part of the folded flap.
  • the adhesive application station comprises a reservoir which holds adhesive, such as wax.
  • the heat welding station welds the seams and also heats the adhesive regions to form non-permanent seals.
  • the tobacco pouch making system comprises a second heat welding station positioned downstream from the cutting station and configured for applying heat at the mouth of the tobacco pouch, thereby melting the adhesive and closing the mouth of the compartment with a non-permanent mouth seal.
  • the adhesive application station is configured to apply adhesive while the film material is being conveyed along the at least one adhesive nozzle.
  • the guides are configured to move the film material in an upward direction along the adhesive application station.
  • the adhesive application station comprises an X-direction adjustment device, a Y-direction adjustment device and a Z-direction adjustment device for adjusting the position of the at least one adhesive nozzle in the X, Y and Z-direction.
  • the method and system of the present invention are suitable for manufacturing a tobacco pouch, formed from a piece of a film material, wherein a part of the piece of film material is folded onto itself along at least one bottom fold, the tobacco pouch comprising a right side seam and a left side seam which extend along respectively a right side and a left side of the folded part, thereby forming a tobacco compartment, the tobacco compartment comprising a mouth, the tobacco pouch further comprising a flap, wherein a band of adhesive is present at the mouth, wherein a front part of the pouch is attached to a rear part of the pouch at the mouth via the adhesive band, wherein the adhesive forms a non-permanent seal, wherein the band of adhesive does not extend into the seams.
  • the sides of the tobacco pouch are advantageously free of weak spots as are known from the prior art.
  • the band of adhesive meets the right and left seam or ends at a distance from the right or left seam.
  • the at least one band of adhesive extends along the full length of the mouth.
  • the flap is folded onto itself along a flap fold, the flap being divided into a forward flap section and a rear flap section, wherein the tobacco pouch comprises at least one flap adhesive region via which the front section of the flap is attached to the rear flap section, the flap adhesive region forming a non-permanent seal which allows the user to unfold the flap section by tearing the flap seal loose.
  • the flap adhesive sections are aligned with the seams.
  • the adhesive is wax.
  • the right seam and the left seam are free of any weakened zones which result from adhesive material being present in the region of the seam.
  • This disclosure further relates to a tobacco pouch formed from a piece of a film material, wherein a part of the piece of film material is folded onto itself along at least one bottom fold, the tobacco pouch comprising a right side seam and a left side seam which extend along respectively a right side and a left side of the folded part, thereby forming a tobacco compartment, the tobacco compartment comprising a mouth, the tobacco pouch further comprising a flap, wherein a band of adhesive is present at the mouth and forms a non-permanent seal for closing the mouth, wherein the flap is folded onto itself along a flap fold, the flap being divided into a forward flap section and a rear flap section, wherein the tobacco pouch comprises at least one flap adhesive region via which the front section of the flap is attached to the rear flap section, the flap adhesive region forming a non-permanent seal which allows the user to unfold the flap section by tearing the flap seal loose.
  • the flap is small when the tobacco pouch is purchased and advantageously complies with legal requirements in this field. After the purchase, the user can unfold the flap by breaking the non-permanent seal and the user can advantageously fold the flap around the compartment.
  • the film material is elongate and generally provided on a roll from which it is unspooled during the making of the tobacco pouches.
  • the film material comprises a longitudinal fold line 3 which is issued to fold a fold section 4 of the film material onto itself.
  • the film material further comprises a flap section 5 which forms the flap in the resulting pouch.
  • Cut lines 6 extend transverse to the main longitudinal direction 7 across the film material.
  • the cut lines 6 define the lines along which the individual pouches 2 are cut and mark the right side 8A and left side 8B of the individual pouches.
  • Two bands 9A, 9B of wax extend in a direction parallel to the main longitudinal direction 7 of the film material.
  • the bands 9A, 9B are provided on the film material prior to the winding of the film material onto the roll.
  • the bands 9A, 9B have essentially a same length as the length of the film material itself.
  • weld regions 10 are indicated with dashed lines.
  • the weld regions 10 are the regions in which heat welds are applied prior to the cutting process.
  • the heat welds interconnect a front part 11A and a rear part 11B of the folded section 4 and form the compartment 14 of the tobacco pouch.
  • the cutting operation along the cutting lines 6 cut each weld regions 10 in a right weld region 10A and a left weld region 10B.
  • the bands 9A, 9B of wax cross the weld regions 10 at crossing zones 13A, 13B. At these crossing zones, the heat welding operation does not work very well, because the wax prevents a proper contact between the two layers of film material which are engaged with one another
  • the individual pouch 2 comprises a compartment 14 defined by a front part 15 and a rear part 16, a bottom fold 3' and the right seam 10A and left seam 10B.
  • the pouch has a flap 18 and a mouth 19.
  • the tobacco pouch 2 is closed by a non-permanent seal 20 at the mouth 19.
  • the non-permanent seal 20 extends along the length of the mouth 19.
  • the non-permanent seal 20 is formed by the two bands 9A, 9B of wax which are folded onto one another and are heated with a heat application device. The wax melts and the front part 15 and the rear part 16 are attached to one another.
  • the wax is strong enough to form a non-permanent seal, yet weak enough to allow a user to open the mouth upon first use.
  • the crossing zones 13A, 13B produce weak spots 21 at the sides of the tobacco pouch.
  • the heat welds of the sides have a low quality and may rip open.
  • the weak spots may in particular become a problem after first use of the tobacco pouch, when the mouth is open and the non-permanent seal has been broken.
  • the tobacco pouch making system 30 comprises a roller support 31 for a supporting a roll 32 of film material 33.
  • the system further comprises various guides 35 for guiding the film material through the system. Most guides 35 are rollers.
  • the various parts are mounted on a common frame 34.
  • the system comprises an adhesive application station 36. Downstream of the adhesive application station, a folding station 37 is provided. Further downstream, a first heat welding station 38 is provided. Downstream from the first heat welding station 38, a cutting station 39 is provided. The adhesive (such as wax) is applied at the adhesive application station.
  • the folding station 37 is used for folding the film material onto itself along at least one bottom fold which extends lengthwise of the film material. The folding station 37 may optionally provide a second fold for folding the flap onto itself, as is further explained below.
  • the heat welds which form the sides of the pouch are applied in the first heat welding station 38.
  • the first heat welding station 38 comprising at least one heating element 40 for making a right seam 10B and a left seam 10A in the film material for forming a right side 8A and a left side 8B of the tobacco pouches 2 which are to be formed.
  • four heating elements 40 are provided.
  • a first buffer station 41 is provided between the folding station 37 and the first heat welding station 38.
  • the first buffer station 41 turns an essentially continuous movement of the film material upstream of the first buffer station 41 into a start-stop movement of the film material downstream of the first buffer station 41.
  • the first heat welding station applies the heat weld during a stationary time period in which the film material is held stationary at the first heat welding station.
  • the system 30 comprises various sensors for measuring the position and speed of the film material.
  • the adhesive application station 36 comprises three adhesive nozzle assemblies 42A, 42B, 42C, generally indicated with numeral 42. Each adhesive nozzle assembly 42 is mounted on a respective nozzle support 43A, 43B, 43C with a clamp 45. Each nozzle support is mounted on a common support 44.
  • the common support 44 comprises a slider 144 which is guided by guide rods 46 and can slide along the guide rods 46.
  • the guide rods 46 extend between two end blocks 48.
  • the common support is adjustable in the Z-direction with an adjustment device 47.
  • the nozzle supports can be moved in the Y-direction (which is the direction transverse to the direction 49 of movement of the film material at the adhesive application station) by loosening the clamps 45 and sliding the nozzle supports along a rail 50 in the common support 44.
  • Each adhesive nozzle can also be adjusted in the X-direction, toward and away from the film material, by an X-adjustment device 51.
  • Each adhesive nozzle assembly comprises an adhesive inlet 52 via which the adhesive is fed to the nozzle.
  • Each adhesive nozzle assembly 42 comprises a control line connector 53 to which a control line can be connected via which the adhesive nozzle assembly 42 is connected to a control unit 54, schematically indicated in fig. 4B .
  • the adhesive application station comprises a first adhesive nozzle assembly 42A and a second adhesive nozzle assembly 42B positioned at a distance from one another.
  • the adhesive application station 36 is configured to apply adhesive while the film material is being conveyed along the adhesive nozzle in the direction 49. In other words, the adhesive is applied on a moving surface.
  • the guide 35 is configured to move the film material 33 in an upward direction 49 along the adhesive application station.
  • each adhesive nozzle assembly 42A, 42B, 42C comprises an adhesive nozzle 100A, 100B,100C, generally indicated as 100.
  • Each adhesive nozzle comprises an upper part 105, a lower part 106 and a shim plate 107 which is very thin and which defines a width of the outflow opening of the nozzle between the upper part and the lower part.
  • a channel 107 is provided between the upper and lower part.
  • the shim plate 107 has a recess 108 in the forward side. In the assembled state of the nozzle 100, the recess defines the outflow opening. If the recess needs to be changed, the nozzle can be taken apart and a shim plate of a different shape or thickness can be used.
  • the outflow opening is a relatively long and narrow gap. It has a length and a width.
  • the length of the outflow opening is more than 10 times the width, in particular more than 30 times the width.
  • the gap may extend horizontally and may extend at a right angle to the transport direction of the film material.
  • the first and second nozzles 42A, 42B are configured for applying a first row 70A of first bands 55A and a second row 70B of second bands 55B of adhesive at regular intervals along the film, wherein the folding station is configured for folding the first and second band of adhesive onto each other.
  • the control unit 54 is configured for activating and de-activating the adhesive nozzles 42 for applying two elongate bands 55A, 55B of adhesive at regular intervals and with adhesive-free zones 56A, 56B between the adhesive bands.
  • the adhesive free zones have a width 57 which is equal than or greater than the width 58 of the weld regions 10. As a result, there are no crossing zones 13.
  • the adhesive bands 55A 55B are elongate and extend parallel to a main longitudinal direction 7 of the film material 33,
  • the first bands 55A and second bands 55B of adhesive have a substantially same length 60 and a substantially same width 61 and are located at a substantially same distance 62 from the bottom fold line 3.
  • the adhesive application station comprises at least one flap adhesive nozzle 42C (also referred to as a third nozzle 42C) configured for providing at row 70C of bands 63 of flap adhesive on a region 5 of the film material which forms the flap.
  • the tobacco pouch making system comprises a flap folding station (not shown) for folding a front flap part 64A onto a rear flap part 65B along a flap fold line 65.
  • figure 6A is a sectional view. Therefore, only half of the flap adhesive region 63 is shown, and this half has a length L2/2.
  • the tobacco pouch making system will comprise a longer heating element for heating the flap adhesive bands 63 of the folded flap in order to provide a non-permanent seal which interconnects the front flap part 64A onto the rear flap part 64B of the folded flap.
  • the heating element for making the seams is also used for welding the adhesive regions into a non-permanent seal. The temperature may also be the same.
  • the adhesive application station comprises a reservoir (not shown) which holds the adhesive, for example wax.
  • the tobacco pouch making system will be followed in line by a system which comprises a second heat welding station 120 (also referred to as a mouth welding station) positioned downstream from the cutting station and downstream from a filling station configured for applying heat at the mouth of the tobacco pouch, thereby melting the adhesive and closing the mouth of the compartment with a non-permanent mouth seal. See also figure 9 and the description below.
  • a second heat welding station 120 also referred to as a mouth welding station
  • a filling station configured for applying heat at the mouth of the tobacco pouch, thereby melting the adhesive and closing the mouth of the compartment with a non-permanent mouth seal.
  • the shown tobacco pouch 80 is formed with the layout of the film material shown in figure 5 .
  • the third adhesive nozzle 42C is inactive or may even be removed.
  • the tobacco pouch 80 is made from a piece 81 of a film material. A bottom part of the piece of film material is folded onto itself along at least one bottom fold 3'.
  • the tobacco pouch comprises a right side seam 10A and a left side seam 10B which extend along respectively a right side 8A and a left side 8B of the folded section.
  • the tobacco pouch 80 comprises a compartment 14 defined by a front part 15 and a rear part 16, a bottom fold 3' and the right seam 10A and left seam 10B.
  • the pouch has a flap 18 and a mouth 19.
  • At least one band 55A, 55B of adhesive is present at the mouth.
  • the band 55A is provided on a rear section 16 of the film material, and the band 55B is provided on the front section 15 of film material.
  • the front part of the pouch is attached to a rear part of the pouch at the mouth via the adhesive, wherein the adhesive forms a non-permanent seal, wherein the band of adhesive does not extend into the seams but ends at the left seam and right seam.
  • the bands 55A, 55B of adhesive extend almost along the full length of the mouth.
  • a distance L1 of 1-2 millimetre may be present between the ends 75 of the bands 55A, 55B of adhesive and the seams 10A, 10B, but the end may also meet the seams 10A, 10B.
  • the right seam 10A and the left seam 10B are free of any weakened zones which result from adhesive material being present in the region of the seam.
  • FIG. 8 6A and 6B another example of the tobacco pouch 80 is shown which is manufactured while using the third adhesive nozzle 42C, i.e. the flap adhesive nozzle.
  • the tobacco pouch is made with the layout of the film material shown in figures 6A and 6B .
  • Flap adhesive regions 63 have been provided on the flap section 5 of the film material.
  • the flap adhesive regions 63 extend on both sides of the cutting lines 6.
  • the flap adhesive regions 63 extend from the flap fold line 65 over a distance L2 in the direction of the mouth section 19.
  • the flap adhesive regions 63 have a width L3 which corresponds to the width of the seams 10. However, the width L3 may also be different than the width of the seams 10.
  • the flap 18 is folded onto itself along a flap fold 84.
  • the flap is divided into a forward flap section 64A and a rear flap section 64B.
  • the tobacco pouch 80 comprises at least one flap adhesive region 63A, 63B via which the front section 64A of the flap is attached to the rear flap section 64b, the flap adhesive region(s) forming a non-permanent seal which allows the user to unfold the flap section by tearing the flap seal loose.
  • the flap adhesive regions 63A, 63B are provided as elongate bands on the left and right side of the flap.
  • a single central flap adhesive region 86 may be provided as indicated with dashed lines in figure 8 .
  • the elongate band 63A,63B may be provided as a series of dots or short bands of adhesive.
  • the user When the user opens the pouch for the first time, he can simply tear loose the front section 64A from the rear section, in order to extend the effective length of the flap 18.
  • the flap may increase 30-70 percent in length. In the extended state the flap may be folded over the entire compartment of the tobacco pouch.
  • a heat welding station 120 for closing the mouth of the tobacco pouch 80 is shown.
  • the tobacco pouches are moved in front of a heating element 121 in a start stop movement.
  • the heat welding element 121 is pressed against the mouth 19 and the wax melts.
  • the heat welding element 121 is subsequently retracted and the wax solidifies, thereby forming the non-permanent seal.
  • the heat welding station 120 comprises a base 123 which can be mounted to the frame, a horizontal arm 124 and a vertical arm 125 which supports the heating element 121. Obviously different arrangements are possible.
  • a roll 32 is positioned on the support 31, and the film material 33 is pulled through the assembly line.
  • the film material 33 on the roll may be free of any bands of adhesive.
  • the film material is conveying by a number of guides and is moved along the adhesive application station 36 in a continuous motion.
  • a first row of bands 55A of adhesive is applied on the film material at regular intervals by ejecting a volume of adhesive from at least one adhesive nozzle 42A at regular intervals.
  • a second row of bands 55B of adhesive is applied from a second nozzle 42B.
  • the adhesive may be wax. The adhesive is applied to the film material 33 while the film material is being conveyed along the at least one adhesive nozzle in an upward direction 49, in particular vertically upward.
  • Each band 55A, 55B of adhesive material ends at the left seam and right seam and does not extend into the left seam and right seam, as it does in the prior art.
  • Each band 55a, 55B of adhesive material comprises opposite ends 75 which meet the right seam and the left seam. Alternatively, the ends 75 may be located at a distance from the right and left seam. The distance may be between zero and 3 mm.
  • the seams 10 may have a width of 3-10 mm.
  • the intervals between the bands 55A, 55B are achieved by activating the one or more adhesive nozzles 42A, 42B, 42C for a predetermined first period of time, and de-activating the adhesive nozzles for a predetermined second period of time, and repeating these steps for each tobacco pouch which is to be made.
  • the first bands 55A and second bands 55B of adhesive have a substantially same length 60 and a substantially same width 61 and are provided on either side from the bottom fold line 3 at a same distance 62 from the bottom fold line 3.
  • a third row of bands may also be applied.
  • the film material 33 is transported to the folding station 37 where it folded onto itself along at least one bottom fold 3 which extends lengthwise of the film material.
  • the first bands 55A and second bands 55B of adhesive are folded onto each other by the making of the at least one bottom fold 3.
  • first heat welding station 38 welds a right seam 10A and a left seam 10B with heat. These seams are actually welded as a single seam 10, and later cut into two separate seams at the cutting station
  • the right seam 10A extends along a right side 8A of the pouch which is to be formed and the left seam 10B extends along a left side 8B of the tobacco pouch which is to be formed.
  • the left and right seam 10A, 10B extend transverse to a main longitudinal direction 7 of the film material, in particular at right angles to the main longitudinal direction.
  • the bands 55A, 55B of adhesive are elongate and extend parallel to the main longitudinal direction 7 of the film material.
  • the film material subsequently passes a second buffer station 72.
  • the buffer changes the pitch distance of the start-stop movement of the film material.
  • the film material is subsequently conveyed along a cutting station 39 where the film material is cut at regular intervals along the cutting lines 6 to form individual tobacco pouches.
  • Each tobacco pouch comprises a compartment and a flap.
  • the filling line may follow directly after the making of the tobacco pouches.
  • the pouches are transported along a conveyor to a filing station where a compartment of each tobacco pouch is filled with tobacco.
  • the tobacco pouches may be conveyed to a mouth heat welding station, where heat is applied at the mouth of the tobacco pouch, in the area of the first band 55A and second band 55B of adhesive.
  • the adhesive melts and upon solidifying, the adhesive forms a non-permanent mouth seal which closes the mouth of the tobacco pouch.
  • the method comprises:
  • Each flap adhesive region 63 may straddle the cut line 6 along which the film material is cut into individual pouches, and each flap adhesive region may be cut in two parts by the cutting operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Bag Frames (AREA)

Claims (14)

  1. Procédé de fabrication d'une blague à tabac (80), le procédé comprenant les étapes de:
    - dérouler un matériau en film (33) d'un rouleau (32),
    - transporter le matériau en film déroulé le long d'une station d'application d'adhésif (36) comprenant au moins une buse d'adhésif (100A, 100B, 100C), et appliquer au moins une rangée (70A, 70B, 70C) de régions d'adhésif (55A, 55B, 63) sur le matériau en film à intervalles réguliers en éjectant un volume d'adhésif de la au moins une buse d'adhésif à intervalles réguliers,
    - plier le matériau en film sur lui-même le long d'au moins un pli inférieur (3) qui s'étend dans le sens de la longueur du matériau en film,
    - acheminer le matériau en film le long d'une première station de soudage à chaud (38) et faire une soudure droite (10A) et une soudure gauche (10B) dans la première station de soudage à chaud le long d'au moins un côté droit (8A) et un côté gauche (8B) de la blague à tabac qui doit être formée, les soudures gauche et droite s'étendant transversalement à une direction longitudinale principale (7) du matériau en film,
    - acheminer le matériau en film le long d'une station de découpe (39) et découper le matériau en film à intervalles réguliers pour former des blagues à tabac individuelles.
  2. Procédé selon la revendication 1, dans lequel les régions adhésives (55A, 55B) d'au moins une rangée (70A, 70B) rencontrent les soudures gauche et droite ou se terminent à une distance des soudures gauche et droite et ne s'étendent pas dans les soudures gauche et droite.
  3. Procédé selon l'une quelconque des revendications 1 à 2, dans lequel chaque région d'adhésif est allongée et présente une forme de bande, dans lequel les bandes allongées s'étendent parallèlement à la direction longitudinale principale (7) du matériau en film, le procédé comprenant l'étape d'appliquer des premières bandes (55A) et des secondes bandes (55B) d'adhésif à des intervalles réguliers le long du film, dans lequel les première et seconde bandes d'adhésif sont pliées l'une sur l'autre par la réalisation de l'au moins un pli inférieur.
  4. Procédé selon l'une quelconque des revendications précédentes, dans lequel l'adhésif est de la cire.
  5. Procédé selon l'une quelconque des revendications précédentes, comprenant les étapes de:
    - remplir un compartiment (14) de chaque blague à tabac avec du tabac dans une station de remplissage, et
    - acheminer les blagues à tabac vers une seconde station de soudage à chaud et appliquer de la chaleur à l'embouchure de la blague à tabac, fondant ainsi l'adhésif et fermant l'embouchure du compartiment avec un joint d'embouchure non permanent.
  6. Procédé selon l'une quelconque des revendications précédentes, comprenant les étapes de:
    - fournir au moins une rangée (70C) de régions d'adhésif de rabat (63) sur une section de rabat (5) du matériau en film à la station d'application d'adhésif (36), et
    - plier le rabat sur lui-même le long d'une ligne de pliage de rabat (65), et
    - fixer une partie de rabat avant (64A) sur une partie de rabat arrière (64B) avec un joint non permanent au moyen de la ou des régions adhésives de rabat en appliquant de la chaleur à la section de rabat.
  7. Procédé selon l'une quelconque des revendications précédentes, dans lequel l'adhésif est appliqué sur le matériau en film tandis que le matériau en film est acheminé le long de la au moins une buse d'adhésif, et en particulier l'adhésif est appliqué sur le matériau en film tandis que le matériau en film est transporté le long de la au moins une buse adhésive dans une direction ascendante, plus particulièrement verticalement vers le haut.
  8. Système de fabrication (30) de blagues à tabac pour fabriquer des blagues de tabac (80), le système de fabrication de blagues à tabac comprenant:
    - un support de rouleau (31) pour supporter un rouleau (32) de matériau en film (33),
    - des guides multiples (35) pour guider le matériau en film,
    - une station d'application d'adhésif (36) comprenant au moins une buse d'adhésif (100A, 100B, 100C) pour appliquer une ou plusieurs rangées (70A, 70B, 70C) de régions d'adhésif (55A, 55B, 63) sur le matériau en film en éjectant un volume d'adhésif de la au moins une buse d'adhésif à intervalles réguliers,
    - une station de pliage (37) pour plier le matériau en film sur lui-même le long d'au moins un pli inférieur (3') s'étendant longitudinalement au matériau en film,
    - une station de soudage à chaud (38) comprenant au moins un élément chauffant (40) pour réaliser une soudure droite (10A) et une soudure gauche (10B) dans le matériau en film pour former un côté droit (8A) et un côté gauche (8B) des blagues à tabac qui doivent être formés, les soudures gauche et droite s'étendant transversalement à une direction longitudinale principale du matériau en film,
    - une station de découpe (39) pour découper les blagues à tabac individuelles (80) à partir du matériau en film,
    dans lequel la station d'application d'adhésif comprend au moins une buse d'adhésif de rabat (100C) configurée pour fournir au moins une rangée (70C) de régions d'adhésif de rabat (63) sur une section du matériau en film qui forme le rabat, le système de fabrication de blagues à tabac comprenant une station de pliage de rabat pour plier une partie de rabat avant sur une partie de rabat arrière le long d'un pli de rabat.
  9. Système de fabrication de blagues à tabac selon la revendication 8, dans lequel la station d'application d'adhésif comprend une unité de commande (54) configurée pour activer et désactiver la buse d'adhésif pour appliquer au moins une rangée de bandes allongées (55A, 55B, 63) d'adhésif à intervalles réguliers et avec des régions libres d'adhésif (56A, 56B) entre les bandes adhésives, dans lequel la au moins une rangée de bandes d'adhésif allongées s'étend parallèlement à une direction longitudinale principale (7) du matériau en film.
  10. Système de fabrication de blagues à tabac selon la revendication 8 ou 9, comprenant une première buse d'adhésif (100A) et une seconde buse d'adhésif (100B) positionnées à distance l'une de l'autre et configurées pour appliquer une première rangée de régions d'adhésif et une seconde rangée de régions d'adhésif à intervalles réguliers le long du matériau en film, dans lequel, en particulier, la station de pliage est configurée pour plier les première et seconde régions d'adhésif l'une sur l'autre.
  11. Système de fabrication de blagues à tabac selon l'une quelconque des revendications 8 à 10, dans lequel une ouverture de sortie de chaque buse a une forme allongée, ayant une longueur et une largeur, dans lequel la longueur de l'ouverture de sortie vaut plus de 10 fois la largeur, en particulier plus de 30 fois la largeur.
  12. Système de fabrication de blagues à tabac selon l'une quelconque des revendications 8 à 11, dans lequel les buses sont configurées pour entrer en contact avec le matériau en film.
  13. Système de fabrication de blagues à tabac selon l'une quelconque des revendications 8 à 12, comprenant une seconde station de soudage à chaud située en aval de la station de découpe et configurée pour appliquer de la chaleur à l'embouchure (19) de la blague à tabac, fondant ainsi l'adhésif et fermant l'embouchure du compartiment avec un joint d'embouchure non permanent.
  14. Système de fabrication de blagues à tabac selon l'une quelconque des revendications 8 à 13, dans lequel la station d'application d'adhésif est configurée pour appliquer un adhésif tandis que le matériau en film est transporté le long de la au moins une buse d'adhésif, et dans lequel, en particulier, les guides sont configurés pour déplacer le matériau en film dans une direction ascendante (49) le long de la station d'application d'adhésif.
EP16187086.0A 2015-09-02 2016-09-02 Procédé et système pour fabrication d'une poche à tabac Active EP3138785B2 (fr)

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EP3435791B1 (fr) * 2016-03-31 2023-07-12 Philip Morris Products S.A. Sachet avec rabat de recouvrement et volet d'extension adhéré

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EP3138785B2 (fr) 2023-06-14
PL3138785T3 (pl) 2019-07-31
DK3138785T3 (en) 2019-04-23
HUE042900T2 (hu) 2019-07-29
EP3138785A1 (fr) 2017-03-08

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