EP2944579B1 - Unité d'incision pour fabriquer un emballage à ouverture par rupture pour dose unique - Google Patents

Unité d'incision pour fabriquer un emballage à ouverture par rupture pour dose unique Download PDF

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Publication number
EP2944579B1
EP2944579B1 EP15164744.3A EP15164744A EP2944579B1 EP 2944579 B1 EP2944579 B1 EP 2944579B1 EP 15164744 A EP15164744 A EP 15164744A EP 2944579 B1 EP2944579 B1 EP 2944579B1
Authority
EP
European Patent Office
Prior art keywords
incision
strip
plastic material
unit
semirigid
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
EP15164744.3A
Other languages
German (de)
English (en)
Other versions
EP2944579A3 (fr
EP2944579A2 (fr
Inventor
Christian Burattini
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.)
Easysnap Technology Srl
Original Assignee
Easysnap Technology Srl
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Publication date
Application filed by Easysnap Technology Srl filed Critical Easysnap Technology Srl
Publication of EP2944579A2 publication Critical patent/EP2944579A2/fr
Publication of EP2944579A3 publication Critical patent/EP2944579A3/fr
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Publication of EP2944579B1 publication Critical patent/EP2944579B1/fr
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Classifications

    • 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
    • B65B61/02—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for perforating, scoring, slitting, or applying code or date marks on material prior to packaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/08—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
    • B26D1/09—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type with a plurality of cutting members
    • B26D1/095—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type with a plurality of cutting members for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/08—Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising
    • B26D3/085—On sheet material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20—Cutting beds
    • 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
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B3/10—Methods of, or means for, filling the material into the containers or receptacles by application of pressure to material
    • B65B3/14—Methods of, or means for, filling the material into the containers or receptacles by application of pressure to material pneumatically
    • 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
    • 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
    • B65B9/00—Enclosing 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
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/023—Packaging fluent material
    • 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
    • B65D2221/00—Small packaging specially adapted for product samples, single-use packages or échantillons

Definitions

  • the present invention relates to an incision unit for a packaging machine for single-dose break-open packages.
  • a sealed single-dose break-open package normally consists of a sheet made of a semirigid plastic material and of a sheet made of a flexible plastic material arranged on top of and sealed to each other in order to define a sealed pocket containing a dose of product; the semirigid plastic material sheet centrally has an incision which guides a controlled breaking of the semirigid plastic material sheet.
  • a user simply needs to grip the package itself with his/her fingers and bend the package until the semirigid plastic material sheet breaks at the incision.
  • Patent application WO2008038074A1 suggests a packaging machine which manufactures sealed single-dose break-open packages.
  • a strip made of a semirigid plastic material and a strip made of a flexible plastic material are unwound from respective reels and fed to a forming station.
  • a pattern is printed on the outer surface of the semirigid plastic material strip and an incision is cut into the semirigid plastic material strip upstream of the forming station; in particular, two incisions are cut at different times (i.e. not simultaneously) into the opposite surfaces of the semirigid plastic material strip, which incisions are opposite and aligned by means of two incision devices arranged one next to the other in the conveying direction of the semirigid plastic material strip.
  • the semirigid plastic material strip and the flexible plastic material strip are arranged on top of each other in the forming station and then sealed in a longitudinal sealing station in order to define a tube adapted to contain the product.
  • a dosing device is arranged at the longitudinal sealing station to feed the product between the two strips which were longitudinally sealed.
  • a transversal sealing station is arranged downstream of the longitudinal sealing station to perform a transversal sealing so as to close the pocket of each sealed single-dose package.
  • a cutting station is arranged downstream of the transversal sealing station, where the two strips are cut transversely so as to separate, in sequence, the sealed single-dose packages.
  • the incision of the semirigid plastic material strip not always has an optimal quality (in particular, the two incisions cut into the opposite surfaces of the semirigid plastic material strip are not always perfectly aligned to each other).
  • an incision unit to manufacture a single-dose break-open package is provided as defined in the appended claims.
  • reference numeral 1 indicates as a whole a sealed single-dose break-open package.
  • Package 1 comprises a sheet 2 made of a semirigid plastic material and rectangular in shape, and a sheet 3 made of a flexible plastic material, which is arranged on top of and sealed to the semirigid plastic material sheet 2 in order to define a sealed pocket 4 containing a dose of a fluid product 5.
  • the fluid product 5 could be a sanitizing gel.
  • the semirigid plastic material sheet 2 centrally has a pre-weakened zone 6 which guides a controlled breakage of sheet 2 so as to determine the formation of an outlet opening for product 5 through sheet 2.
  • a pre-weakened zone 6 which guides a controlled breakage of sheet 2 so as to determine the formation of an outlet opening for product 5 through sheet 2.
  • the pre-weakened zone 6 comprises an internal incision 7 which is cut through an inner surface 8 (i.e. facing pocket 4) of the semirigid plastic material sheet 2 and an outer incision 9 which is cut through an outer surface 10 of the semirigid plastic material sheet 2.
  • each incision 7 or 9 is of variable depth along its length so as to determine a progressive breaking of the semirigid plastic material sheet 2; in particular, each incision 7 or 9 has a maximum depth at a central portion.
  • reference numeral 11 indicates as a whole a packaging machine to produce sealed single-dose packages 1 similar to that described above and shown in figures 1 and 2 .
  • the packaging machine 11 shown in figure 4 produces three sealed packages 1 at a time, i.e. operates in parallel on three adjacent tracks to produce three sealed packages 1 at a time; according to other variants (not shown), the packaging machine 11 could obviously operate in parallel on a different number of tracks arranged one next to the other (e.g. two, four, six tracks but also a single track).
  • the packaging machine 11 (shown in figure 4 ) comprises a frame (not shown) resting on the floor by means of a plurality of resting feet (not shown) and supports a pair of unwinding devices 12 and 13.
  • the unwinding device 12 supports a reel 14 from which it progressively unwinds a strip 15 of semirigid (yet elastically deformable) plastic material which is fed to a forming station 16, and the unwinding device 13 supports a reel 17 from which it progressively unwinds a strip 18 made of a flexible plastic material which is also fed to the forming station 16.
  • a printing unit 19 is arranged between the unwinding device 12 of the semirigid plastic material strip 15 and the forming station 16, where the outer surface 10 of the semirigid plastic material sheet 2 is printed.
  • An incision unit 20 is arranged downstream of the printing unit 19 and upstream of the forming station 16, and transversely cuts the semirigid plastic material strip 15 in order to define the incisions 7 and 9 at the pre-weakened zone 6 along the semirigid plastic material strip 15.
  • the semirigid plastic material strip 15 is continuously fed through the incision unit 20; to this end, the incision unit 20 comprises a conveying device 21 provided with a pair of feeding dandy rollers 22.
  • the feeding dandy rollers 22 are movable against the action of elastic means to allow the semirigid plastic material strip 15 to temporarily stop inside the incision unit 20.
  • the semirigid plastic material strip 15 provided with the incisions 7 and 9 is then fed to the forming station 16, which is arranged downstream of the incision unit 20 and where the semirigid plastic material strip 15 is arranged on top of and sealed to the flexible plastic material strip 18.
  • the two strips 15 and 18 arranged one on top of the other are sealed to each other by means of a longitudinal roller sealing device 23 which performs a longitudinal sealing (both laterally and centrally), i.e. parallel to a conveying direction, so as to define a plurality of tubes arranged one next to the other.
  • the longitudinal sealing device 23 comprises two twin sealing assemblies arranged one on top of the other, each of which has a contrast roller 24 and four sealing rollers 25 which are electrically heated and spaced apart from one another.
  • a dosing unit 26 to feed a dose of product 5 into each tube between the semirigid plastic material strip 15 and the flexible plastic material strip 18 is arranged in the forming station 16 and at the longitudinal sealing device 23.
  • the dosing unit 26 comprises three twin feeding ducts 27, each of which is vertically arranged between two sealing rollers 25 of the longitudinal sealing device 23 and feeds the doses of product 5 between the semirigid plastic material strip 15 and the flexible plastic material strip 18.
  • the forming station 16 comprises a transversal roller sealing device 28, which is arranged downstream of the longitudinal sealing device 23 and transversely seals together the two strips 15 and 18 in order to define a series of pockets 4 (shown in figure 1 ) along each tube, each of which contains a dose of product 5.
  • the transversal sealing device 28 comprises a contrast roller 29 and a sealing roller 30, which is electrically heated and cooperates with the contrast roller 29.
  • a cutting device 31 is arranged downstream of the forming station 16 so as to cut transversely the strips 15 and 18 arranged one on top of the other and sealed so as to separate in sequence the sealed single-dose packages 1.
  • An outlet conveyor belt 32 is arranged under the cutting device 31, on which the sealed single-dose packages 1 fall by gravity once they have been separated from the strips 15 and 18 arranged on top of and sealed to each other.
  • the flexible plastic material strip 18 is normally pre-printed, whereas, as previously said, the semirigid plastic material strip 15 is printed inside the packaging machine 11 by using the printing unit 19; according to an alternative embodiment, the printing unit 19 is not present (or is disabled), therefore the semirigid plastic material strip 15 is also pre-printed (or without prints).
  • the flexible plastic material strips 15 and/or 18 are generally provided with reference notches, which are read by special optical sensors to synchronize the several operations appropriately, so that the printed zones are correctly centered in the finished sealed single-dose packages 1.
  • the reference notches are preferably printed in the zones of strips 15 and/or 18 which are discarded by the cutting device 31 so as not to be present in the finished sealed single-dose packages 1.
  • the printing unit 19 of the semirigid plastic material strip 15 comprises a conveying device 33 (diagrammatically shown) which feeds the semirigid plastic material strip 15 along a (substantially vertical) conveying direction C, and a printing device 34 arranged in a fixed position along the conveying device 33 and facing the outer surface 10 of the semirigid plastic material strip 15 so as to print a pattern on the strip 15 itself.
  • the printing device 34 is a heat transfer printing device and comprises a printing head 35, which is movable perpendicularly to the conveying direction C along a printing direction S so as to contact the semirigid plastic material strip 15; in other words, in use, the printing head 35 is movable along the printing direction S, which is orthogonal to the conveying direction C and orthogonal to the semirigid plastic material strip 15 so as to come into contact with the outer surface 10 of the semirigid plastic material strip 15. Therefore, in use, the printing head 35 contacts the semirigid plastic material strip 15 with a given pressure so as to print a pattern on the semirigid plastic material strip 15.
  • the printing device 34 further comprises a fixed contrast plate 36 (i.e. in a fixed position), which is independent and separate from the conveying device 33, is arranged in a fixed position along the conveying device 33, and is arranged parallel to and facing the printing device 34 so that the semirigid plastic material strip 15 is arranged between the contrast plate 36 and the printing device 34.
  • a fixed contrast plate 36 i.e. in a fixed position
  • the printing head 35 presses the semirigid plastic material strip 15 against the contrast plate 36 and therefore the printing head 35 may exert a given pressure on the outer surface 10 of the semirigid plastic material strip 15, which pressure is required to carry out the printing process properly.
  • the contrast plate 36 comprises a plurality of nozzles 37, each of which opens up onto the semirigid plastic material strip 15 and is adapted to release a compressed air blow.
  • each nozzle 37 consists of a through hole, which is obtained through the contrast plate 36 and receives the compressed air by means of a pipe 39 connected to a compressed air source 40.
  • the compressed air blown by the nozzles 37 creates a pressurized air cushion 38 at the inner surface 8 of the semirigid plastic material strip 15, which inner surface 8 is opposite to the outer surface 10 and thus opposite to the printing device 34.
  • the air cushion 38 thus made creates a deformable contrast which allows the printing head 35 to create a constant and even pressure against the outer surface 10 of the semirigid plastic material strip 15; in other words, the air cushion 38 is deformed in a variable and dynamic manner so as to adapt perfectly to the shape of the printing head 35, thus ensuring a completely even contact between the printing head 35 and the outer surface 10 of the semirigid plastic material strip 15.
  • the contrast plate 36 comprises a plurality of nozzles 37, which open up onto the inner surface 8 of the semirigid plastic material strip 15 and are adapted to release a compressed air blow to create the pressurized air cushion 38 at the inner surface 8 of the semirigid plastic material strip 15, opposite to the printing device 34; the air cushion 38 forms a deformable contrast against which the printing head 35 pushes the semirigid plastic material strip 15.
  • the printing head 35 may operate under the most favorable conditions allowing a high quality pattern to be obtained in very short times (i.e. also when the packaging machine 11 operates at high speed).
  • the compressed air is fed to the nozzles 37 with a pressure from 2 to 6 bar (preferably from 3 to 5 bar).
  • the printing device 34 may use a printing technology other than heat transfer (e.g. it might use ink-jet); in this case, the printing head 35 is fixed (i.e. does not translate perpendicularly to the semirigid plastic material strip 15).
  • the incision unit 20 cooperates with the conveying device 21 which feeds the semirigid plastic material strip 15 along the conveying direction C.
  • the incision unit 20 comprises two support plates 41, which are arranged along the conveying device 21 downstream of the feeding dandy rollers 22 so that the feeding dandy rollers 22 cyclically allow the semirigid plastic material strip 15 to temporarily stop between the two support plates 41.
  • the two support plates 41 are arranged on opposite sides of the semirigid plastic material strip 15; therefore, each support plate 41 faces a corresponding surface 8 or 10 of the semirigid plastic material strip 15.
  • the incision unit 20 is provided with six incision devices 42, each of which cuts an incision 7 or 9 (shown in figure 3 ) into a corresponding surface 8 or 10 of the semirigid plastic material strip 15; in particular, three incision devices 42a, which are arranged one next to the other, cut respective inner incisions 7 into the inner surface 8 of the semirigid plastic material strip 15 and three incision devices 42b, which are arranged one next to the other, cut respective outer incisions 9 into the outer surface 10 of the semirigid plastic material strip 15.
  • Each incision device 42 comprises a cutting element 43 supported by a support plate 41 and facing the corresponding surface 7 or 9 of the semirigid plastic material strip 15, and a contrasting element 44 supported by the other support plate 41 and facing the corresponding surface 9 or 7 of the semirigid plastic material strip 15.
  • Each cutting element 43 is provided with a blade (not shown in detail) which is preferably V-shaped; in contrast, each contrast element 44 is flat so as to provide the blade of the corresponding cutting element 43 with an even contrast.
  • the two support plates 41 are mechanically connected together so as to move synchronously along a translation direction T which is orthogonal to the conveying direction C; in particular, the two support plates 41 are mounted so as to be movable on corresponding rails 45 so as to translate (slide) together along the translation direction T, which is orthogonal to the conveying direction C.
  • the two support plates 41 are provided with corresponding slides, which are slidingly coupled to the rails 45 so as to translate (slide) along the translation direction T under the control of an actuating device 46 (e.g. of the electric or pneumatic type).
  • the six incision devices 42 are arranged one next to the other and are aligned along the translation direction T.
  • the actuating device 46 cyclically moves the two support plates 41 forward and backward along the translation direction T between a first position (shown in figures 5 and 6 ), in which the incision devices 41a cut the inner incisions 7 into the inner surface 8 of the semirigid plastic material strip 15, and a second position (shown in figures 7 and 8 ), in which the incision devices 41b cut the outer incisions 9 into the outer surface 10 of the semirigid plastic material strip 15.
  • Each support plate 41 supports the cutting elements 43 of an incision device 42a or 42b and the contrast elements 44 of the other incision device 42b or 42a; in other words, each support plate 41 supports both three cutting elements 43 and three contrast elements 44.
  • a support plate 41 is movably mounted on corresponding rails 47 so as to translate (slide) cyclically forward and backward towards the other support plate 41 and along an incision direction I, which is orthogonal to both the conveying direction C and the translation direction T.
  • a support plate 41 is provided with corresponding slides which are slidingly coupled to the rails 47 so as to translate (slide) along the incision direction I under the control of an actuating device 48 (e.g. of the electric or pneumatic type).
  • each incision device 42 comprises an adjusting organ 49 (e.g. a micrometer) to adjust the depth of incision 7 or 9 by varying the relative position between the corresponding cutting element 43 or the corresponding contrast element 44 and the respective support plate 41.
  • Each adjusting organ 49 is coupled to the cutting element 43 or to the contrast element 44 of the same incision device 42 and is adapted to adjust the distance between the cutting element 43 or the contrast element 44 and the semirigid plastic material strip 15.
  • the adjusting organs 49 are all arranged on the same support plate 41 so as to facilitate the access by an operator to the adjusting organs 49; in other words, if all the adjusting organs 49 are arranged on the same support plate 41, it is sufficient to allow an operator to access said support plate 41 in order to act on all the adjusting organs 49.
  • the semirigid plastic material strip 15 is arranged at the incision devices 42a ( figure 5 ), i.e. is arranged between the incision devices 42a.
  • the two support plates 41 are approached each other by operating actuator 48, which translates a support plate 41 along the rails 47 and in the incision direction I; such a relative movement between the two support plates 41 leads the incision devices 42a to cut the inner surface 8 of the semirigid plastic material strip 15 (by approaching together the corresponding cutting elements 43 and contrast elements 44) so as to cut the inner incisions 7 (the incision devices 42b also perform an incision movement, although without practical effects since the semirigid plastic material strip 15 is not present between the incision devices 42b).
  • the support plates 41 are brought back to their initial distance ( figure 5 ); the two support plates 41 are then translated together by operating actuator 46 so as to move the two support plates 41 laterally in the translation direction T in order to invert the incision devices 42 coupled to the semirigid plastic material strip 15.
  • the incision devices 42a are coupled to the semirigid plastic material strip 15 ( figure 5 )
  • the incision devices 42b are coupled to the semirigid plastic material strip 15 ( figure 7 ).
  • the two support plates 41 are approached each other by operating actuator 48, which translates a support plate 41 along the rails 47 and in the incision direction I; such a relative movement between the two support plates 41 leads the incision devices 42b to cut the outer surface 10 of the semirigid plastic material strip 15 (by approaching together the corresponding cutting elements 43 and contrast elements 44) so as to cut the outer incisions 9 (the incision devices 42a also perform an incision movement, although without practical effects since the semirigid plastic material strip 15 is not present between the incision devices 42a).
  • the cycle of the incision unit 20 is completed and the semirigid plastic material strip 15 is fed from the conveying device 21 along the conveying direction C.
  • the semirigid plastic material strip 15 does not move (i.e. is stationary in the same position) between the cutting of the inner incisions 7 into the inner surface 8 of the semirigid plastic material strip 15 and the cutting of the outer incisions 9 into the outer surface 10 of the semirigid plastic material strip 15, since the incision devices 42 supported by the two support plates 41 perform a lateral translation; thereby, the incisions 7 and 9 have an almost perfect alignment with respect to each other since it is totally free from possible errors due to the incorrect positioning of the semirigid plastic material strip 15.
  • the dosing unit 26 comprises a tank 50 holding the fluid product 5 and three feeding ducts 27, each of which originating from tank 50 and ending with a delivery mouth 51 which is arranged at the longitudinal sealing device 23.
  • a pump 52 is arranged along each feeding duct 27 so as to feed the fluid product 5 from tank 50 towards the delivery mouth 51.
  • Each pump 52 is a volumetric pump of peristaltic type (i.e. is a peristaltic pump) so as to provide for a precise dosing of product 5.
  • each peristaltic pump 52 has an impeller which supports a plurality of thrust elements (not less than four thrust elements and preferably eight thrust elements).
  • tank 50 is pressurized at a pressure which is higher than the atmospheric pressure; such a feature allows the suction of product 5 by the peristaltic pumps 52 to be enhanced thus avoiding the occurrence of "voids" along the feeding ducts 27 and increasing the precision of dosing product 5.
  • tank 50 has at least one nozzle 53, which is arranged in an upper portion of tank 50 and is adapted to blow a compressed air jet into tank 50, which keeps the internal volume of tank 50 under pressure (i.e. pressurized).
  • a shutoff valve 54 is included, which is arranged along each feeding duct 27 upstream of the corresponding peristaltic pump 52.
  • the shutoff valves 54 allow the flow of product 5 along the feeding ducts 27 to be stopped when the packaging machine 11 is stopped (with the packaging machine 11 stopped and in the absence of the shutoff valves 54, a small amount of product 5 would continue to flow by gravity along the feeding ducts 27).
  • the dosing unit 26 allows the fluid product 5 (in particular a sanitizing gel) to be dosed with high precision (of the order of ⁇ 2-3%) even in the case of very small amounts (e.g. of the order of one millimeter of fluid product in each single-dose package 1). Such a result is also achieved, inter alia , by using peristaltic pumps 52 which maintain a high precision even in the case of low volumetric capacity.
  • the above-described packaging machine 11 has three production lines arranged one next to the other and operating in parallel; a different number of production lines can obviously be provided as a function of the throughput required (e.g. a single production line or two, four or more production lines).
  • a dosing unit 26 comprising: a tank 50 holding a fluid product 5; at least one feeding duct 27, which originates from tank 50 and ends with a delivery mouth 51; and a peristaltic pump 52 which is arranged along the feeding duct 27 so as to feed the fluid product 5 from tank 50 to the delivery mouth 51, where tank 50 is pressurized at a pressure which is higher than the atmospheric pressure.
  • tank 50 has at least one nozzle 53, which is arranged in an upper portion of tank 50 and is adapted to blow a compressed air jet into tank 50.
  • the peristaltic pump 52 has an impeller which supports at least four thrust elements.
  • the peristaltic pump 52 has an impeller which supports eight thrust elements.
  • a shutoff valve 54 is preferably provided, which is arranged along the feeding duct 27 upstream of pump 52.
  • the pattern of the semirigid plastic material strip has not always an optimal quality.
  • the pattern might be incomplete, i.e. have some larger or smaller zones with no printing, due to a non-optimal contact between a printing head of a printing device and the semirigid plastic material strip during the printing process.
  • a printing unit 19 comprising: a conveying device 33, which feeds strip 15 along a conveying direction C; a printing device 34 facing a first surface 10 of strip 15 so as to print a pattern on strip 15; and a contrast plate 36, which is parallel to and faces the printing device 34 so that strip 15 is arranged between the contrast plate 36 and the printing device 34, where the contrast plate 36 comprises at least one nozzle 37, which opens up onto a second surface 8 of strip 15 and is adapted to release a compressed air blow.
  • the compressed air blown by nozzle 37 preferably creates a pressurized air cushion 38 at the second surface 8 of strip 15 opposite to the printing device 34.
  • the contrast plate 36 preferably comprises a plurality of nozzles 37 spaced apart from one another.
  • the printing device 34 is a heat transfer printing device.
  • the printing device 34 preferably comprises a printing head 35 which is movable along a printing direction S orthogonal to the conveying direction C and orthogonal to strip 15.
  • the compressed air is preferably fed to nozzle 37 with a pressure from 2 to 6 bar.
  • the compressed air is preferably fed to nozzle 37 with a pressure from 3 to 5 bar.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)

Claims (12)

  1. Unité (20) pour l'incision d'une bande (15) composée d'une matière plastique pour pratiquer deux incisions distinctes (7, 9) dans deux surfaces opposées (8, 10) de la bande (15) dans une machine de conditionnement (11) pour fabriquer un emballage unidose scellé à ouverture par rupture (1) ; l'unité d'incision (20) comprenant :
    un dispositif de transport (21) qui fait avancer la bande (15) dans une direction de transport (C) ;
    deux plaques de support (41), qui sont disposées sur des côtés opposés de la bande (15) de telle sorte que chaque plaque de support (41) soit orientée vers une surface correspondante (8 ; 10) de la bande (15) ; et
    au moins deux dispositifs d'incision (42) qui pratiquent chacun une incision (7 ; 9) dans une surface correspondante (8 ; 10) de la bande (15) et comprennent un élément coupant (43) qui est supporté par une plaque de support (41), et un élément de contre appui (44) qui est supporté par l'autre plaque de support (41) ;
    l'unité d'incision (20) étant caractérisée en ce que :
    les deux plaques de support (41) sont mobiles de sorte à se déplacer ensemble dans une direction de translation (T), qui est orthogonale à la direction de transport (C) ;
    les deux dispositifs d'incision (42) sont disposés l'un à côté de l'autre et sont alignés dans la direction de translation (T) ; et
    un premier dispositif d'actionnement (46) est présent, lequel déplace de façon cyclique les deux plaques de support (41) vers l'avant et vers l'arrière dans la direction de translation (T) entre une première position, dans laquelle un premier dispositif d'incision (42a ; 42b) est actionné de sorte à pratiquer une première incision (7 ; 9), et une seconde position dans laquelle un second dispositif d'incision (42b ; 42a) est actionné de sorte à pratiquer une seconde incision (9 ; 7) qui est à l'opposé de la première incision (7, 9).
  2. Unité d'incision (20) selon la revendication 1, dans laquelle chaque plaque de support (41) supporte l'élément coupant (43) d'un dispositif d'incision (42) et l'élément de contre appui (44) de l'autre dispositif d'incision (42).
  3. Unité d'incision (20) selon la revendication 1 ou 2, dans laquelle chaque élément coupant (43) comprend une lame.
  4. Unité d'incision (20) selon la revendication 3, dans laquelle chaque lame a une forme de V et chaque élément de contre appui (44) est plat.
  5. Unité d'incision (20) selon l'une quelconque des revendications 1 à 4, dans laquelle chaque dispositif d'incision (42) comprend un organe d'ajustement (49), qui est couplé à l'élément coupant (43) ou à l'élément de contre appui (44) et ajuste la distance entre l'élément coupant (43) ou l'élément de contre appui (44) et la bande (15).
  6. Unité d'incision (20) selon la revendication 5, dans laquelle les organes d'ajustement (49) sont tous disposés sur une même plaque de support (41).
  7. Unité d'incision (20) selon l'une quelconque des revendications 1 à 6, dans laquelle au moins une plaque de support (41) est mobile de sorte à se déplacer de façon cyclique vers l'avant et vers l'arrière, grâce à un second dispositif d'actionnement (48), vers l'autre plaque de support (41) et dans une direction d'incision (I), qui est perpendiculaire à la bande (15) et perpendiculaire à la fois à la direction de transport (C) et à la direction de translation (T).
  8. Unité d'incision (20) selon l'une quelconque des revendications 1 à 7, dans laquelle le dispositif de transport (21) comprend au moins un rouleau presseur d'alimentation (22) qui est disposé en amont des plaques de support (41) et est mobile de sorte à permettre à la bande (15) de s'arrêter temporairement entre les deux plaques de support (41).
  9. Machine de conditionnement (11) pour fabriquer un emballage unidose scellé à ouverture par rupture (1) ;
    l'emballage se composant d'une première feuille (2) composée d'une matière plastique semi-rigide qui est disposée sur une seconde feuille (3) composée d'une matière plastique souple, et scellée à cette dernière, de sorte à définir une poche scellée (4) contenant une dose d'un produit (5) et comportant une paire d'incisions (7, 9) pour guider une cassure contrôlée de la première feuille (2) ;
    la machine de conditionnement (11) comprenant :
    un premier dispositif de déroulage (12) pour faire avancer une première bande (15) composée d'une matière plastique semi-rigide ;
    un second dispositif de déroulage (13) pour faire avancer une seconde bande (18) composée d'une matière plastique souple ;
    une unité d'incision (20) pour pratiquer deux incisions (7, 9) dans la première bande (15) composée d'une matière plastique semi-rigide ;
    un poste de formage (16), qui est disposé en aval de l'unité d'incision (20) de sorte à disposer la première bande (15) composée d'une matière plastique semi-rigide sur la seconde bande (18) composée d'une matière plastique souple ;
    un premier dispositif de scellement longitudinal (32) pour sceller longitudinalement et latéralement les deux bandes (15, 18) l'une à l'autre de sorte à définir au moins un tube ;
    une unité de dosage (26) qui est disposée dans le poste de formage de sorte à introduire une dose d'un produit (5) dans le tube entre la première bande (15) composée d'une matière plastique semi-rigide et la seconde bande (18) composée d'une matière plastique souple ;
    un second dispositif de scellement transversal (28) qui est disposé en aval du dispositif de dosage (26) de sorte à sceller transversalement les deux bandes (15, 18) l'une à l'autre de sorte à définir, le long du tube, une série de poches (4) contenant chacune une dose de produit (5) ; et
    un dispositif coupant (31) qui est disposé en aval du poste de formage (16) de sorte à couper transversalement le tube afin de séparer, en séquence, les emballages unidoses scellés (1) ;
    la machine de conditionnement (11) étant caractérisée en ce que l'unité d'incision (20) est fabriquée selon l'une quelconque des revendications 1 à 8.
  10. Procédé pour l'incision d'une bande (15, 18) composée d'une matière plastique pour pratiquer deux incisions distinctes (7, 9) dans deux surfaces opposées (8, 10) de la bande (15) dans une machine de conditionnement (11) pour fabriquer un emballage unidose scellé à ouverture par rupture (1) ; le procédé d'incision comprenant les étapes consistant à :
    transporter la bande (15) dans une direction de transport (C) et entre deux plaques de support (14) de telle sorte que chaque plaque de support (41) soit orientée vers une surface correspondante (8 ; 10) de la bande (15) ; et
    couper la bande (15) au moyen d'au moins deux dispositifs d'incision (42) qui pratiquent chacun une incision (7, 9) dans une surface correspondante (8 ; 10) de la bande (15) ;
    le procédé d'incision étant caractérisé en ce qu'il comprend les autres étapes consistant à :
    déplacer les deux plaques de support (41) ensemble dans une direction de translation (T), qui est orthogonale à la direction de transport (C) ; et
    déplacer de façon cyclique les deux plaques de support (41) vers l'avant et vers l'arrière dans la direction de translation (T) entre une première position, dans laquelle un premier dispositif d'incision (42a ; 42b) est actionné de sorte à pratiquer une première incision (7 ; 9), et une seconde position dans laquelle un second dispositif d'incision (42b ; 42a) est actionné de sorte à pratiquer une seconde incision (9 ; 7) qui est à l'opposé de la première incision (7, 9).
  11. Procédé pour l'incision d'une bande (15) composée d'une matière semi-rigide selon la revendication 10, dans lequel les deux dispositifs d'incision (42) sont disposés l'un à côté de l'autre et sont alignés dans la direction de translation (T).
  12. Procédé pour l'incision d'une bande (15) composée d'une matière semi-rigide selon la revendication 10 ou 11, dans lequel la bande (15) composée d'une matière semi-rigide est arrêtée temporairement pendant l'étape d'incision de bande.
EP15164744.3A 2014-04-22 2015-04-22 Unité d'incision pour fabriquer un emballage à ouverture par rupture pour dose unique Active EP2944579B1 (fr)

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WO2020212757A1 (fr) 2019-04-15 2020-10-22 Contract Pharmaceuticals Limited Emballages à dose unique à ouverture par rupture
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IT201900009036A1 (it) * 2019-06-14 2020-12-14 V Shapes S R L Confezione sigillata monodose con apertura a rottura, dispositivo e metodo di realizzazione
IT201900019854A1 (it) 2019-10-28 2021-04-28 Guala Pack Spa Confezione monouso con apertura a rottura
IT202100003137A1 (it) * 2021-02-12 2022-08-12 V Shapes S R L Unita’ di incisione, metodo di incisione e apparecchiatura di confezionamento
IT202100010379A1 (it) 2021-04-23 2022-10-23 Easysnap Tech S R L Confezione sigillata monodose con apertura a rottura
IT202100017756A1 (it) 2021-07-06 2023-01-06 Easysnap Tech S R L Metodo per la realizzazione di una confezione sigillata monodose con apertura a rottura
CN116276102B (zh) * 2023-02-14 2024-03-12 江苏三环奥纳科技有限公司 一种非晶带材表面处理设备

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