EP0140081A2 - Procédé et dispositif pour faire avancer une nappe en continu - Google Patents

Procédé et dispositif pour faire avancer une nappe en continu Download PDF

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Publication number
EP0140081A2
EP0140081A2 EP84110789A EP84110789A EP0140081A2 EP 0140081 A2 EP0140081 A2 EP 0140081A2 EP 84110789 A EP84110789 A EP 84110789A EP 84110789 A EP84110789 A EP 84110789A EP 0140081 A2 EP0140081 A2 EP 0140081A2
Authority
EP
European Patent Office
Prior art keywords
web
rolls
roll
main
drive
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.)
Withdrawn
Application number
EP84110789A
Other languages
German (de)
English (en)
Other versions
EP0140081A3 (fr
Inventor
Maurice Patrick Clare
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.)
Del Monte Frozen Foods Inc
Original Assignee
Del Monte Frozen Foods Inc
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
Application filed by Del Monte Frozen Foods Inc filed Critical Del Monte Frozen Foods Inc
Publication of EP0140081A2 publication Critical patent/EP0140081A2/fr
Publication of EP0140081A3 publication Critical patent/EP0140081A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/69—Form fill-and-seal machines

Definitions

  • the present invention relates to a method of and apparatus for feeding a continuous web of material .of indeterminate length and, more particularly, to improvements in a form, fill and seal machine known as a Bartelt packaging machine and the manner of operating the same.
  • a continuous web of flexible sheet material is unwound from a roll and passed over a set of horizontal idler rollers to a forming plow which folds the web longitudinally along its center line. Downstream of the plow, there is arranged a pair of vertical idler rolls and a seal forming apparatus which impresses a bottom seal and spaced vertical seals, e.g., side seals, in the web material to form a series of interconnected rectangular product pouches.
  • the web is advanced along its path of travel in increments or steps of equal length by a pair of vertical friction drive rolls disposed downstream of the seal forming apparatus.
  • a cutoff apparatus is arranged downstream of the drive rolls for cutting the folded and sealed web into a plurality of separate flexible pouch packages which are then fed to a product filling station.
  • web tension is controlled by a friction brake located on the shaft of the sheet material supply roll.
  • the brake may be manually adjusted by the operator to compensate for the changes in tension which result from the continually diminish- --_ ing weight of the supply roll as the web material is fed from it.
  • Yet another object of this invention is to improve the yield and efficiency of a flexible package forming apparatus.
  • Still another object of this invention is to provide a method of applying a constant tension to an intermittently advanced continuous laminate web in a flexible pouch forming apparatus.
  • the Bartelt packaging machine comprises a pair of main drive rolls arranged to unwind a continuous, flexible laminate web in incremental lengths from a supply roll, through an idler roll set and past a web folding plow and a vertical (side) and horizontal (bottom) seal forming apparatus.
  • a pair of vertical auxiliary drive rolls are arranged upstream of the main drive rolls and seal formers and immediately downstream of. the folding plow.
  • the nip of the auxiliary drive rolls is aligned with and parallel to the path of travel of the continuous web and the diameter of the auxiliary rolls is slightly smaller than the diameter of the main rolls. Both roll sets are incrementally driven from the main drive shaft and thus rotate at the same RPM.
  • the peripheral speed of the auxiliary rolls is proportionately lower than the peripheral speed of the main rolls. That difference in peripheral speed imparts a constant tension to the strip of web material spanning the roll pairs. Variations in tension between the feed or supply roll and the auxiliary roll pair have no effect on the tension in the strip of material between the main and auxiliary roll pairs.
  • the tension control system of the present invention has resulted in substantial improvement of the yield of a roll of laminate material and in the overall efficiency of the apparatus.
  • FIG. 1 an apparatus 10 according to the present invention for incrementally advancing a continuous web of sheet material.
  • the invention is incorporated in a flexible package forming apparatus known as a Bartelt packaging machine.
  • the apparatus 10 comprises an elongated frame 12 upon which is mounted a main drive roll assembly 14 and an auxiliary drive roll assembly 16. At one end of the frame 12, a supply roll 18 of a flexible sheet material web W is rotatably mounted in a pair of cantilevered support arms 20. If desired, a friction brake (not shown) may be provided on the supply roll shaft 22 to prevent overrunning or excessive pay-out of web material from the supply roll when the web is unwound from the roll.
  • the web W is unwound from the roll 18 upwardly over a conventional idler roll set 24 and travels past a folding plow 26 where it is folded longitudinally along its center line.
  • the auxiliary drive roll assembly 16 is arranged immediately downstream of the folding plow 26.
  • the rolls 28, 30 of the roll assembly 16 are operated intermittently to withdraw the web W from the supply roll in incremental lengths.
  • a seal forming apparatus 32 which is operative to form spaced vertical (side) seals S and a continuous horizontal (bottom) seal B.
  • the seals S and B define the sides and bottom, respectively, of a series of interconnected flexible pouches or packages which are pulled into the nip of the rolls 34, 36 of the main roll assembly 14.
  • a cut-off apparatus 38 Downstream of the roll assembly 14 there is arranged a cut-off apparatus 38 which is operative to sever the web W along the vertical seals S and thereby separate the individual pouches for subsequent filling and top sealing.
  • the seal forming and cut-off apparatus 32, 38 form no part of the present invention and are, therefore, not illustrated or described in greater detail herein.
  • FIG 2 there is schematically illustrated the drive means for the main and auxiliary drive rolls 14, 16. Both roll sets are driven from a common drive shaft 40 which is journaled at its opposite ends in gearboxes 42, 44 which may be fixed to the machine frame 12. Gearboxes 42, 44 house respective bevel gear arrangements 46, 48 which rotate the shafts 50, 52 of the rolls 36, 30 at the same speed.
  • the shaft 40 is intermittently rotated by an indexing mechanism 54 which is driven by a motor 5.6 and pulley 58.
  • the details of a suitable indexing mechanism 54 are disclosed in the aforementioned U.S. Patent No. 2,738,187.
  • the diameters of the. rolls 28, 30 of the auxiliary drive roll assembly 16 are slightly less than the diameters of the rolls 34, 36.
  • the difference in roll diameters causes the portion of the folded web spanning the distance between the nips of the roll pairs 28, 30 and 34, 36 to be under a substantially constant strain or tension even during the intermittent advancement or indexing of the roll pairs.
  • the constant tension substantially improves the uniformity and quality of the individual pouches formed on the machine and makes it possible to minimize wastage as the supply roll 18 is depleted and a roll change is required.
  • the use of auxiliary drive rolls having a nominal diameter of 2.450 inches, or 2% less than the nominal 2.500 inches diameter of the main drive rolls has been successfully operated with a laminate web of metal foil and'polymer film.

Landscapes

  • Advancing Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Making Paper Articles (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP84110789A 1983-10-05 1984-09-11 Procédé et dispositif pour faire avancer une nappe en continu Withdrawn EP0140081A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US53881283A 1983-10-05 1983-10-05
US538812 1990-06-14

Publications (2)

Publication Number Publication Date
EP0140081A2 true EP0140081A2 (fr) 1985-05-08
EP0140081A3 EP0140081A3 (fr) 1986-10-01

Family

ID=24148515

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110789A Withdrawn EP0140081A3 (fr) 1983-10-05 1984-09-11 Procédé et dispositif pour faire avancer une nappe en continu

Country Status (2)

Country Link
EP (1) EP0140081A3 (fr)
JP (1) JPS6093053A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307734A3 (fr) * 1987-09-18 1989-05-24 Franz Bendig Machine pour fabriquer des sacs ou des emballages semblables à partir d'une feuille en plastique flexible et thermoplastique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6371943B1 (ja) * 2018-03-09 2018-08-08 大西 厚▲徳▼ テープ供給装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2738187A (en) * 1951-12-12 1956-03-13 Bartelt Engineering Co Indexing mechanism with friction drive
DE958264C (de) * 1953-06-18 1957-02-14 Behn Verpackung Erwin Vorschubwalzeneinrichtung fuer Papierverarbeitungsmaschinen
BE620662A (fr) * 1961-07-25 1900-01-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307734A3 (fr) * 1987-09-18 1989-05-24 Franz Bendig Machine pour fabriquer des sacs ou des emballages semblables à partir d'une feuille en plastique flexible et thermoplastique

Also Published As

Publication number Publication date
EP0140081A3 (fr) 1986-10-01
JPS6093053A (ja) 1985-05-24

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Effective date: 19861001

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Inventor name: CLARE, MAURICE PATRICK