EP1077177A2 - Verfahren und Vorrichtung zum Verpacken von Gegenständen in einer mit einer Einzelfalte versehene Heissschrumpffolie - Google Patents

Verfahren und Vorrichtung zum Verpacken von Gegenständen in einer mit einer Einzelfalte versehene Heissschrumpffolie Download PDF

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Publication number
EP1077177A2
EP1077177A2 EP00202627A EP00202627A EP1077177A2 EP 1077177 A2 EP1077177 A2 EP 1077177A2 EP 00202627 A EP00202627 A EP 00202627A EP 00202627 A EP00202627 A EP 00202627A EP 1077177 A2 EP1077177 A2 EP 1077177A2
Authority
EP
European Patent Office
Prior art keywords
impulse
shrinking
film
bell
packaging
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Withdrawn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
EP00202627A
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English (en)
French (fr)
Other versions
EP1077177A3 (de
Inventor
Bernardo Pietro Di
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.)
Interdibipack SpA
Original Assignee
Interdibipack SpA
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 Interdibipack SpA filed Critical Interdibipack SpA
Publication of EP1077177A2 publication Critical patent/EP1077177A2/de
Publication of EP1077177A3 publication Critical patent/EP1077177A3/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Withdrawn legal-status Critical Current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
    • B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
    • B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
    • B65B53/06—Shrinking wrappers, containers, or container covers during or after packaging by heat supplied by gases, e.g. hot-air jets

Definitions

  • the present invention relates to a process for the packaging of various types of products, particularly, but not exclusively, relatively small-sized products, with a so-called single-fold heat-shrinking film.
  • the invention also relates to a machine for the realization of the above-mentioned process.
  • Machines of this kind are for example disclosed and illustrated in the United States patent US-4.104.848 and in the European Patent EP-535747, to which reference should be made if further clarification is required.
  • the packaging machine referred to in the above-mentioned patents is structurally formed by a packaging room which is closed at the top by a mobile bell, generally transparent, on top of a welding frame.
  • the packaging process as well as the heat-shrinking process (when necessary) of the single-fold plastic film containing the product to be packaged are carried out at the same time, thanks to the forced circulation of hot air (obtained from one or more fans), which is heated and kept at a substantially constant temperature, which is relatively high (around 100°C-150°C), through the use of suitable heating means, placed within the packaging room.
  • said heating means are positioned within a "lung” where the heat is accumulated and released - through an automatic opening of the lung itself - when the bell is closed (lowered); this therefore leads to the activation of the welding blades and the start-up of the forced circulation of hot air fan.
  • this machine uses a so-called single-fold film, among the folds of which the product to be packaged is positioned using a work top positioned at the side of the packaging room.
  • the product, partially wrapped in the single-fold film, is dragged manually from said work top onto a net, or grill, work top placed inside the room (above the heating means and the fan) and the bell is lowered in order to activate the welding blades that close the open sides of the film.
  • Automatic operation machines of this kind are also well-known, in which the product is fed to the packaging room by a continual netlike conveyor belt, and in which the lowering and the raising of the bell are carried out mechanically, by one or more pneumatic cylinders.
  • This method of operation of the machine is achieved by excluding both the forced circulation of hot air from the operative cycle, that is to say deactivating the automatic activation of the fan/s when the bell is lowered (closure of the packaging room), i.e. at the moment that welding blades are activated, and the heating means.
  • the machine simply operates like a common welding frame.
  • Bell type machines like the one described above, are used to package - even in just one company - numerous products of different kinds, of the most varied dimensions, maybe so large that they cover most of the support grill or so small that they cover just a tiny part, or in the middle.
  • This way of operation means that, in each packaging cycle, when the operator opens the packaging room (lifting of the bell) he is impinged by an enormous quantity of hot air and fumes from the operation of welding and shrinking that escape from the open packaging room.
  • the general objective of the present invention is that of overcoming the above- mentioned drawbacks of the state of the art, creating a packaging process, and a machine suitable for its realization, which allows for the packaging with a single-fold heat-shrinking film and in particular of small-sized products, with a low energy consumption, therefore drastically reducing the escape of hot air and fumes when the packaging room is opened (lifting of the bell), finally achieving a package with perfectly closed and stable welding lines and with a remarkable reduction in time-cycle, therefore with an increase in productivity.
  • the above-mentioned objective is achieved, according to the present invention, by adopting a packaging process which is different from the ones presently used in bell-type machines.
  • the innovative concept upon which the process of the invention is based is that of packaging in a bag, in succession, numerous products and then submitting them, at the same time and in a single step, to film heat-shrinking.
  • a machine for the execution of the process according to the invention is generally indicated by 10, and is structurally made up of a fairing 11 including: a packaging top 12, a packaging room 13 (figures 5, 6), a transparent bell 14 for closure of said room 13, and a heating system and forced circulation of air into the space identified by said room 13 and bell 14.
  • the fairing 11 brings at least one cradle support 15 of a coil 16 of single-fold heat-shrinking film, idle rolls 17, 17A, of film return, and control panels 18, 18A.
  • the above-mentioned heating system and forced air circulation in the space identified by the room 13 and of the bell 14 include thermostated heating means, for example at least one resistor 19, EH1 and at least one fan 20, M1 (figures 5, 6).
  • the resistor 19, EH1 may be contained within a lung P closed at the top by a flap S which opens when the bell 14 is lowered to the position of figure 1 and to that of figure 2, in a way that is well-known to men skilled in the art, as for example described and illustrated in US-4.104.848.
  • said blades 21, EH2 and 22, EH2 distinguish a so-called welding frame and they cooperate with counter-blades 23, 24 mounted onto the bell 14.
  • control circuit may, for example, be of the kind illustrated in figure 7, predisposed to activate at the same time the welding operations of the film and the heat-shrinking of the same on the product to be packaged when the bell 14 is closed (lowered).
  • the temperature of the heating resistor 19, EH1 is regulated by a thermostat BT1 and the heat does not spread throughout the packaging room 13 because 19, EH1 is, for example, closed in the temperature insulated lung p.
  • the machine is in the condition indicated in figure 8.
  • the temperature of the heat resistor 19, EH1 is regulated by the thermostat BT1 and the heat does not spread through the packaging room 13 as 19, EH1 is closed in the temperature insulated lung P.
  • the operator may continually produce bags until the entire surface of the grill 25 is filled (as illustrated in figures 5, 12) and, for example, during the creation of the last bag, the operator himself may push a button for manual shrinking SB1 which starts-up the fan 20, M1, activating the above-mentioned forced air fan and therefore at the same time the shrinking of the film of all of the bags previously made.
  • the time required to shrink the film on the bags may be managed in the two following ways.
  • a method of timing management of the film shrinking time is represented in the circuit of figure 8, where the button SB1 controls the reel of a relay K1 which is used:
  • D2 is a timer with a "delay passing to instant excitation to the control" function, ie. D2 closes its own contact D2.2 on the rise front of the impulse on the starter pin for the time defined by the operator: A1 and A2 are the power pins of D2.
  • the process of the invention can be, for example, executed even in the manner illustrated in the control circuit of figure 9.
  • the machine is in the condition of figure 9.
  • Such a possibility may be obtained using a piece counter or an impulse counter D1.
  • Said impulse counter D1 is designed, after its activation, through a piece counter selector SA2, according to the number of packages that make up the entire group to be heat-shrunk.
  • the same impulse counter D1 When the count of the impulse counter D1 coincides with the quantity of packages defined, making up the group to be shrunk, then the same impulse counter D1 generates an impulse on the OUT pin in order to be reset for a new count.
  • This OUT impulse generated is a start signal for the D2 timer, therefore for simultaneous heat-shrinking of the entire set of bags.
  • the bell-type machine for the realization of the process according to the invention operates even to carry out at the same time welding operations and film heat-shrinking operations on a single product to be packaged, as described with reference to the control circuit of figure 7.
  • the heating means may not necessarily be closed in a lung P, and they may be positioned wherever is considered most suitable.
  • the power of the products inside the packaging room can also be carried out mechanically using techniques and systems that are well-known in the field.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Package Closures (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Wrappers (AREA)
EP00202627A 1999-07-21 2000-07-21 Verfahren und Vorrichtung zum Verpacken von Gegenständen in einer mit einer Einzelfalte versehene Heissschrumpffolie Withdrawn EP1077177A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI991602 1999-07-21
IT1999MI001602A ITMI991602A1 (it) 1999-07-21 1999-07-21 Procedimento e macchina per il confezionamento di prodotti con film termoretraibile monopiega

Publications (2)

Publication Number Publication Date
EP1077177A2 true EP1077177A2 (de) 2001-02-21
EP1077177A3 EP1077177A3 (de) 2002-10-09

Family

ID=11383372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00202627A Withdrawn EP1077177A3 (de) 1999-07-21 2000-07-21 Verfahren und Vorrichtung zum Verpacken von Gegenständen in einer mit einer Einzelfalte versehene Heissschrumpffolie

Country Status (2)

Country Link
EP (1) EP1077177A3 (de)
IT (1) ITMI991602A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007080451A2 (en) * 2005-10-14 2007-07-19 Interdibipack S.P.A. Machine for packaging products with single fold heat shrinkable film
WO2008068783A1 (en) * 2006-12-06 2008-06-12 Minipack-Torre S.P.A. Packaging machine
US8735172B2 (en) 2000-10-19 2014-05-27 Biocartis S.A. Method and device for the manipulation of microcarriers for an identification purpose
IT202000023344A1 (it) * 2020-10-05 2022-04-05 Italdibipack Spa Macchina confezionatrice perfezionata
IT202200008492A1 (it) * 2022-04-28 2023-10-28 Italdibipack Spa Macchina confezionatrice compatta perfezionata

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4104848A (en) 1976-03-03 1978-08-08 Francesco Torre Packaging apparatus for packaging articles of different kinds within a film of a heat-shrinkable plastic material
EP0535747A1 (de) 1991-10-03 1993-04-07 INTERDIBIPACK S.p.A. Maschine zum Verpacken mittels einer, mit einer einzigen Falte versehener Schrumpffolie, mit einer Vorrichtung zum selbsttätigen Öffnen der Folie

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR7604648A (pt) * 1976-07-16 1978-01-31 G Bartolomei Aperfeicoamentos em maquinas de embalagem em filme plastico termo-retratil
FR2573031B1 (fr) * 1984-11-15 1987-07-03 Raffault Gerard Machine pour l'emballage de produits divers, sous film thermoretractable
IT241040Y1 (it) * 1996-12-03 2001-04-20 Minipack Torre Spa Macchina confezionatrice a film termoretraibile

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4104848A (en) 1976-03-03 1978-08-08 Francesco Torre Packaging apparatus for packaging articles of different kinds within a film of a heat-shrinkable plastic material
EP0535747A1 (de) 1991-10-03 1993-04-07 INTERDIBIPACK S.p.A. Maschine zum Verpacken mittels einer, mit einer einzigen Falte versehener Schrumpffolie, mit einer Vorrichtung zum selbsttätigen Öffnen der Folie

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8735172B2 (en) 2000-10-19 2014-05-27 Biocartis S.A. Method and device for the manipulation of microcarriers for an identification purpose
WO2007080451A2 (en) * 2005-10-14 2007-07-19 Interdibipack S.P.A. Machine for packaging products with single fold heat shrinkable film
WO2007080451A3 (en) * 2005-10-14 2007-11-08 Interdibipack Spa Machine for packaging products with single fold heat shrinkable film
WO2008068783A1 (en) * 2006-12-06 2008-06-12 Minipack-Torre S.P.A. Packaging machine
IT202000023344A1 (it) * 2020-10-05 2022-04-05 Italdibipack Spa Macchina confezionatrice perfezionata
IT202200008492A1 (it) * 2022-04-28 2023-10-28 Italdibipack Spa Macchina confezionatrice compatta perfezionata

Also Published As

Publication number Publication date
EP1077177A3 (de) 2002-10-09
ITMI991602A0 (it) 1999-07-21
ITMI991602A1 (it) 2001-01-21

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