EP1008519A1 - Folienschneidegerät für eine Dehnfolien-wickelmaschine - Google Patents

Folienschneidegerät für eine Dehnfolien-wickelmaschine Download PDF

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Publication number
EP1008519A1
EP1008519A1 EP99660182A EP99660182A EP1008519A1 EP 1008519 A1 EP1008519 A1 EP 1008519A1 EP 99660182 A EP99660182 A EP 99660182A EP 99660182 A EP99660182 A EP 99660182A EP 1008519 A1 EP1008519 A1 EP 1008519A1
Authority
EP
European Patent Office
Prior art keywords
film
wrap
stretch
dispenser
tongue
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Withdrawn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
EP99660182A
Other languages
English (en)
French (fr)
Inventor
Aarno Sakari Haloila
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.)
Mercamer Oy
Original Assignee
Mercamer Oy
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 Mercamer Oy filed Critical Mercamer Oy
Publication of EP1008519A1 publication Critical patent/EP1008519A1/de
Withdrawn legal-status Critical Current

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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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/02—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders
    • B65B11/025—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders by webs revolving around stationary articles
    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/04—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated
    • B65B11/045—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated by rotating platforms supporting the articles

Definitions

  • the present invention relates to a novel type of solution for a film cutting mechanism in a stretch-film wrapping machine, as well as to a novel type of stretch-film wrapping machine.
  • the solution of the invention can be utilized for packaging operations in a variety of industries.
  • plastic stretch-film wrapper is economical, elastic, light, strong, easy-to-handle, and holds articles well together. Plastic stretch-film wrapper is also effective in protecting articles from dirt and dust.
  • Stretch-film wrapper is often used for example in food industry, both in processing facilities and intermediate wholesale stores, for example for wrapping articles of dry goods for pallet-sized shipments to be delivered to customer businesses. Furniture industry is another example, wherein stretch-film wrapper is often used for wrapping pieces and consignments of furniture.
  • an article to be packaged is wrapped in a web of plastic film.
  • the wrapping may be carried out in such a way that a film dispenser is mounted on a stationary mast and an article to be wrapped is rotating, or such that a film dispenser is mounted on a movable mast or frame which is rotating, and the article being wrapped remains stationary.
  • Fig 1 illustrates a stretch-film wrapping machine of the prior art.
  • a film dispenser 3 is mounted on a stationary mast 1 and an article to be wrapped rotates on a turntable 2.
  • the film dispenser 3 can be guided up and down along the stationary mast 1 of the stretch-film wrapping machine.
  • the stretch-film wrapper between a film dispenser and an article to be wrapped must be severed automatically for the machine operator not having to do it manually.
  • the heating of a wire requires substantial power and, thus, the wire must be provided with a sizable current supply.
  • Another problem is the complexity of a mechanism required for the deflection of a resistance wire. Since it cannot be allowed to stay in contact with the film wrapper all the time, the wire must be deflected from a lateral direction for example by means of motor. As a result of plastics being burnt by the wire, small amounts of combustion gases from plastics will also be released in the air.
  • Another prior known method is to make a tiny hole in the vicinity of the edge of a wrap film by means of a solenoid present in a film dispensing carriage, while the wrapping is still in progress. After the hole is formed, the wrapping is continued momentarily until the film has advanced to such an extent that the hole present in the film is located half-way between the film dispensing mechanism and an article being wrapped. At this point, the dispensing of wrap film is discontinued for tensioning the film and tearing it in line with the hole.
  • a film cutting mechanism of the invention for a stretch-film wrapping machine is characterized in that the film cutting mechanism comprises a spring-loaded tongue set between a roll of film and a film dispenser.
  • a stretch-film wrapping machine of the invention is characterized in that the stretch-film wrapping machine is provided with a film dispenser, comprising a roll of film, film driving rollers, film guide rollers, a film discharge roller, as well as a film cutting mechanism set between the film roll, preferably the film guide roller, and the discharge roller and constituted by a spring-loaded tongue.
  • Fig. 1 has been described above.
  • the solution of the invention will be described hereinafter with reference to figs. 2-4, which illustrate one embodiment for the solution of the invention.
  • Fig. 2 depicts a film dispenser of the invention for a stretch film wrapping machine.
  • the film dispenser of the invention for a stretch film wrapping machine comprises a roll of film 4, film driving rollers 6, 8, film guide rollers 5, 7, 9, a film discharge roller 11, as well as a film cutting mechanism 10 set between the film guide roller 9 and the discharge roller 11.
  • the film dispenser for a stretch film wrapping machine of the invention is designated with reference numeral 12.
  • the film is depicted by a dash-and-dot line.
  • the film cutting mechanism of the invention for a stretch film wrapping machine comprises a small spring-loaded tongue 10 set between the film guide roller 9 and the discharge roller 11 of the film dispenser 12, which in an operating state is in engagement with the wrap film.
  • a small spring-loaded tongue 10 set between the film guide roller 9 and the discharge roller 11 of the film dispenser 12, which in an operating state is in engagement with the wrap film.
  • the film glides along in contact with the tongue 10 without any damage to the film.
  • the film advancing direction is reversed, i.e. the film is retracted into the dispenser 12.
  • said tongue 10 punctures the wrap film and produces a hole.
  • the wrapping is continued momentarily until the wrap film has advanced to such an extent that the hole present in the film is located half-way between the film dispenser 12 and an article being wrapped. At this point the feeding of wrap film is discontinued, whereby the film stretches and tears off in line with the hole.
  • Fig. 3 shows a film cutting mechanism of the invention for a stretch-film wrapping machine.
  • the film cutting mechanism 10 of the invention for a stretch-film wrapping machine is constituted by a spring-loaded tongue.
  • the spring is not shown in the figure.
  • Fig. 4 illustrates the arrangement of a film cutting mechanism of the invention in a stretch-film wrapping machine in relation to a film dispenser.
  • a small spring-loaded tongue 10 Between the film guide roller 9 and the discharge roller 11 of the film dispenser 12 is a small spring-loaded tongue 10, such that, in an operating state, as the web of film is being pulled out of the film dispenser 12, the wrap film glides in contact with the tongue 10 without damage to the film.
  • the feeding direction of wrap film is reversed, i.e. the film is retracted into the film dispenser 12, as a result of the way the tongue 10 is spring-loaded and designed, said tongue 10 punctures the wrap film and produces a hole. After the hole is formed, the feeding of wrap film is discontinued, whereby the film stretches and tears off in line with the hole.
  • the film cutting mechanism 10 of the invention for a stretch-film wrapping machine can be positioned relative to a wrap film emerging from the film dispenser 12 in the proximity of its middle section, bottom section, or top section.
  • the film dispenser 12 can be mounted on a stationary mast, in which case an article to be wrapped is rotating, or, optionally, the film dispenser 12 can be mounted on a movable mast or a rotating frame, in which case an article to be wrapped remains stationary.
  • the solution of the invention involves a basic idea that, within the film dispenser, the stretch film is formed with a small hole which initiates tearing off the wrap film as the delivery of wrap film is discontinued after a brief delay.
  • the solution of the invention offers an advantage over the prior art solution in the sense that the hole is formed without a solenoid or the like device, merely by means of the mechanical design of a wrap-film dispensing system.
  • the invention offers a benefit that the technique of making the actual hole is very simple.
  • the retraction of a wrap film can be implemented for example by means of a film prestretching mechanism, the wrap film being tensioned by means of motor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
EP99660182A 1998-12-07 1999-11-30 Folienschneidegerät für eine Dehnfolien-wickelmaschine Withdrawn EP1008519A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI982634A FI107326B (fi) 1998-12-07 1998-12-07 Kiristekalvon käärintäkoneen kalvonkatkaisulaite ja kalvonkatkaisumenetelmä
FI982634 1998-12-07

Publications (1)

Publication Number Publication Date
EP1008519A1 true EP1008519A1 (de) 2000-06-14

Family

ID=8553051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99660182A Withdrawn EP1008519A1 (de) 1998-12-07 1999-11-30 Folienschneidegerät für eine Dehnfolien-wickelmaschine

Country Status (2)

Country Link
EP (1) EP1008519A1 (de)
FI (1) FI107326B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109335115A (zh) * 2018-10-17 2019-02-15 崔雪柯 一种在线缠绕包装机自动贴膜断膜系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5216873A (en) * 1991-10-07 1993-06-08 Hay & Forage Industries Wrapper cutoff mechanism for round balers
DE4234662A1 (de) * 1992-10-15 1994-04-21 Sanpack Lagertech Gmbh Verfahren und Vorrichtung zum mindestens teilweisen Umwickeln einer Ware mit einer Folienbahn (Banderole)
DE4236760A1 (de) * 1992-10-30 1994-05-05 Ceka Maschinenbau Und Handel G Vorrichtung zum automatischen Auftrennen von auf Wickelgut aufgewickeltem Klebeband
EP0671324A1 (de) * 1994-03-08 1995-09-13 Lantech, Inc. Verfahren zum Umwickeln mittels Dehnfolie mit Foliendurchtrennung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5216873A (en) * 1991-10-07 1993-06-08 Hay & Forage Industries Wrapper cutoff mechanism for round balers
DE4234662A1 (de) * 1992-10-15 1994-04-21 Sanpack Lagertech Gmbh Verfahren und Vorrichtung zum mindestens teilweisen Umwickeln einer Ware mit einer Folienbahn (Banderole)
DE4236760A1 (de) * 1992-10-30 1994-05-05 Ceka Maschinenbau Und Handel G Vorrichtung zum automatischen Auftrennen von auf Wickelgut aufgewickeltem Klebeband
EP0671324A1 (de) * 1994-03-08 1995-09-13 Lantech, Inc. Verfahren zum Umwickeln mittels Dehnfolie mit Foliendurchtrennung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109335115A (zh) * 2018-10-17 2019-02-15 崔雪柯 一种在线缠绕包装机自动贴膜断膜系统

Also Published As

Publication number Publication date
FI982634A0 (fi) 1998-12-07
FI982634A (fi) 2000-06-08
FI107326B (fi) 2001-07-13

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