EP1279602B1 - Procédé pour emballer des produits dans un film thermorétractable - Google Patents

Procédé pour emballer des produits dans un film thermorétractable Download PDF

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Publication number
EP1279602B1
EP1279602B1 EP02077995A EP02077995A EP1279602B1 EP 1279602 B1 EP1279602 B1 EP 1279602B1 EP 02077995 A EP02077995 A EP 02077995A EP 02077995 A EP02077995 A EP 02077995A EP 1279602 B1 EP1279602 B1 EP 1279602B1
Authority
EP
European Patent Office
Prior art keywords
products
heat
shrinking
sealing
zone
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.)
Expired - Lifetime
Application number
EP02077995A
Other languages
German (de)
English (en)
Other versions
EP1279602A1 (fr
Inventor
Luciano Butturini
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.)
Italdibipack SpA
Original Assignee
Italdibipack 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 Italdibipack SpA filed Critical Italdibipack SpA
Publication of EP1279602A1 publication Critical patent/EP1279602A1/fr
Application granted granted Critical
Publication of EP1279602B1 publication Critical patent/EP1279602B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65B53/063—Tunnels

Definitions

  • the present invention refers to a procedure for packaging small products with heat-shrinking film on an energy-saving packager.
  • Machines for packaging products with centre-folded heat-shrinking film have a dome hinged onto a structure to form a heat-shrinking chamber, equipped with a heat source and a fan for circulating the heated air.
  • a cutting and sealing frame, equipped with a blade or sealing rods is applied integral with the edges of the dome.
  • Such machines having to adapt to products of various sizes, must be of a suitable volume and have ventilation and heating capabilities which are suitable for large products and are therefore oversized in the case of the packaging of small products.
  • An energy-saving packaging machine foresees the realisation of a heat-shrinking chamber which can be divided through a mobile dividing wall, where each of the zones which are formed is arranged with a heat source and a fan for circulating air which are independent and can be selectively activated.
  • the heat-shrinking will take place in just one zone, defined by the dividing wall; in the case of treatment of large products, on the other hand, the entire volume of the dome shall be used with the simultaneous activation of both fans and both heat sources.
  • the main drawback of the conventional use of packaging machines with a dome consists of the high energy consumption, in the form of heat dispersion, which cannot be avoided each time the dome is opened.
  • the general purpose of the present invention is that of overcoming the aforementioned drawbacks of the prior art in an extremely simple, cost-effective and particularly functional manner.
  • Another purpose is that of improving the heat-shrinking of film with low heat-absorption capability or with a greater thickness.
  • an energy-saving machine for packaging products with heat-shrinking film comprising a structure 11 upon which a reel of heat-shrinking film 14 is fitted and upon which for example the procedure according to the invention is carried out.
  • the packaging machine 10 consists of a cover 13 or dome, equipped with cutting and sealing means, such as a blade or sealing rods, which fits onto a lower part 11, hinged at 16 along one of its sides, and defines a heat-shrinking chamber 15.
  • cutting and sealing means such as a blade or sealing rods
  • a dividing wall is arranged, formed from an upper portion 17, integral with the dome 13, and a lower portion 18, inserted into the structure 11.
  • Such portions of wall 17 and 18 can be both of the removable type or they can be generically mobile.
  • the chamber 15 is divided into two separate zones A and B, which can be used independently, thanks to a sensor 19, which detects the presence or non-presence of the wall 18.
  • Each zone A and B is equipped with a heat source, resistors 21A and 21B, and with a fan 20A and 20B for circulating the heated air, as well as with a support surface 22A and 22B, for example a gridded surface, for products to be packaged 23.
  • a support surface 22A and 22B can be of the type which can be adjusted in height, to allow the chamber 15 to also be divided in the vertical direction.
  • the support surface 22A and 22B of the machine 10 also has the function of transporting the products 23 into such a machine 10 and of discharging them out from it and is made up of a transportation device for example a conveyor belt or else rollers.
  • the procedure for packaging small products with heat-shrinking film 14 foresees the preparation of many products for every work cycle.
  • work cycle we mean all of the packaging operations carried out in succession on a number of products, which can be received simultaneously in the chamber 15 during heat-shrinking.
  • the products packaged in a work cycle shall be indicated with I, II, III, IV; those packaged in the subsequent cycles shall be indicated with I', II' and so on.
  • the number of products packaged for each work cycle is at least equal to two and the maximum depends upon the sizes of the products themselves, as well as upon the capacity of the chamber 15.
  • a first embodiment of the procedure, object of the present invention is carried out with the dividing wall 18 in closed position to separate the chamber 15 into the two zones A and B.
  • zone A the sealing operations of products I and II are carried out in succession between the sealing rods (figures 4a-4c).
  • zone B Each time the dome 13 is opened, the product I or II, enclosed by a closed encasement, is transferred into zone B (figures 4b and 4c).
  • the work cycle ends with the heat-shrinking of all of the products present in zone B, through the activation of the fan 20B and of the heat source 21B (figure 4c). Possibly, as indicated in the figures, at the same time as the heat-shrinking, the sealing of the first product I' of the subsequent work cycle takes place in zone A.
  • the embodiments described hereafter allow more than one heat-shrinking operation to be carried out for each product being treated, which is desirable in order to improve the heat-shrinking of film with low heat-absorption capability or with an increased thickness.
  • the second embodiment of the procedure fore sees the operation of the machine 10 with the dividing wall 18 closed. In each work cycle in zone A the sealed products I and II of figures 5a and 5b accumulate, which are then transferred simultaneously into zone B (figure 5c). Then many heat-shrinking operations, up to a maximum equal to the number of products packaged in every work cycle, are carried out. Such heat-shrinking operations (figures 5c and 5d) coincide with the sealing operations in zone A of the products of the subsequent cycle I' and II' and therefore are interrupted by the opening of the dome 13.
  • FIG. 6a and 6b represent a transitory start-up step of the machine 10.
  • the products being treated I, II, I', II', I" are transferred, for example through a non-shown automated transporter, into a series of contiguous successive positions and are discharged one at a time from zone B.
  • the operation of the chamber according to the described procedures can be programmed by the operator and is carried out step-by-step according to an automated sequence.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Basic Packing Technique (AREA)
  • Wrappers (AREA)

Claims (4)

  1. Procédure d'emballage de petits produits avec un film thermorétractile sur un emballeur (10) permettant d'économiser de l'énergie constitué d'un couvercle (13) ou d'un dôme, équipé de moyens de découpage et de fermeture, tels qu'une lame ou des barres de fermeture, qui sont installés sur une partie inférieure (11), pour définir une chambre (15), lesdits moyens de découpage et de fermeture servant à fournir une enveloppe autour de chaque produit individuel en découpant un film plié au centre selon une forme appropriée et en refermant les bords du film pour former ladite enveloppe, dans laquelle ladite chambre (15) prévoit une cloison (17, 18) pour définir au moins deux zones séparées (A, B), équipées d'au moins une source de chaleur (21A, 21B) et d'un ventilateur (20A, 20B) destiné à faire circuler l'air chauffé et d'une surface de support (22A, 22B) pour les produits destinés à être emballés (23), caractérisée en ce qu'elle prévoit pour chaque cycle de travail l'emballage d'un certain nombre de produits (I, II, III, IV, I', II') au moins égal à deux et au moins égal au nombre de produits qui peuvent être reçus simultanément dans ladite chambre (15, A, B), dans laquelle ledit cycle de travail comprend :
    un certain nombre d'opérations de découpage et de fermeture subséquentes dans une première zone (A) égal au nombre de produits (I, II, III, IV) destinés à être emballés ;
    au moins une opération de thermorétraction desdits produits (I, II, III, IV) agencés dans une seconde zone (B) par l'activation desdits ventilateurs (20A, 20B) et d'une desdites sources de chaleur (21A, 21B), dans laquelle en même temps que ladite opération de thermorétraction dans ladite seconde zone (B), la fermeture dans ladite première zone (A) d'un premier produit (I') du prochain cycle de travail a lieu.
  2. Procédure selon la revendication 1, caractérisée en ce que ladite au moins une opération de thermorétraction est seulement de une en nombre et est réalisée dans ladite zone (B) avec ladite cloison (18) dans la position fermée.
  3. Procédure selon la revendication 1, caractérisée en ce que ladite au moins une opération de thermorétraction est égale en nombre aux produits destinés à être emballés (I, II, III, IV) pour chaque cycle de travail.
  4. Procédure selon la revendication 1, caractérisée en ce que lesdits produits destinés à être emballés (I, II, III, IV) sont transférés d'une manière automatisée, ladite surface de support (22A, 22B) consistant en un mécanisme de transport.
EP02077995A 2001-07-25 2002-07-23 Procédé pour emballer des produits dans un film thermorétractable Expired - Lifetime EP1279602B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001MI001597A ITMI20011597A1 (it) 2001-07-25 2001-07-25 Procedimento per il confezionamento con film termoretraibile di prodotti di piccole dimensioni su una macchina confezionatrice a risparmio e
ITMI20011597 2001-07-25

Publications (2)

Publication Number Publication Date
EP1279602A1 EP1279602A1 (fr) 2003-01-29
EP1279602B1 true EP1279602B1 (fr) 2005-03-30

Family

ID=11448140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02077995A Expired - Lifetime EP1279602B1 (fr) 2001-07-25 2002-07-23 Procédé pour emballer des produits dans un film thermorétractable

Country Status (5)

Country Link
EP (1) EP1279602B1 (fr)
AT (1) ATE292051T1 (fr)
DE (1) DE60203449T2 (fr)
ES (1) ES2240650T3 (fr)
IT (1) ITMI20011597A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1262869B (de) * 1962-05-29 1968-03-07 Weldotron Corp Heisslufttunnel
US3312811A (en) * 1964-02-04 1967-04-04 Shanklin Frank Garrett Shrink tunnel
DE1917264A1 (de) * 1969-04-03 1970-10-15 Sporkenbach Gustav Adolf Schrumpfofen fuer die Verpackung von Steinpaketen
US4719332A (en) * 1986-05-05 1988-01-12 Strategic Products, Inc. Tube shrinking oven

Also Published As

Publication number Publication date
ATE292051T1 (de) 2005-04-15
ITMI20011597A0 (it) 2001-07-25
EP1279602A1 (fr) 2003-01-29
ITMI20011597A1 (it) 2003-01-25
DE60203449T2 (de) 2006-02-09
ES2240650T3 (es) 2005-10-16
DE60203449D1 (de) 2005-05-04

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