EP0058602B1 - Appareillage pour la rétraction à chaud de manchons thermoplastique autour de récipients - Google Patents

Appareillage pour la rétraction à chaud de manchons thermoplastique autour de récipients Download PDF

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Publication number
EP0058602B1
EP0058602B1 EP82400224A EP82400224A EP0058602B1 EP 0058602 B1 EP0058602 B1 EP 0058602B1 EP 82400224 A EP82400224 A EP 82400224A EP 82400224 A EP82400224 A EP 82400224A EP 0058602 B1 EP0058602 B1 EP 0058602B1
Authority
EP
European Patent Office
Prior art keywords
chamber
tunnel
air
containers
preheating
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
Application number
EP82400224A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0058602A1 (fr
Inventor
Jacques Fresnel
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT82400224T priority Critical patent/ATE9567T1/de
Publication of EP0058602A1 publication Critical patent/EP0058602A1/fr
Application granted granted Critical
Publication of EP0058602B1 publication Critical patent/EP0058602B1/fr
Expired 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 relates to the field of devices for producing and circulating hot air, intended in particular to cause shrinkage or shrinking of film of heat-shrinkable plastic around a support such as a container intended to be dressed or decorated. It particularly relates to a new apparatus intended for the operation of shrinking sheath sections or sleeves of thermoplastic material around receptacles of various shapes and nature.
  • the object of the invention is to further improve the shrinkage systems of sleeves in order to make them suitable for the treatment of all types of receptacles and to avoid the presence of folds in the areas with high discontinuity of certain packages. It also aims to develop a device that saves as much as possible the calories expended on shrinking and authorizes universal use for any type of packaging.
  • the invention uses a tunnel type retraction device in the upper part of which passes the container conveyor and divided into three communicating zones including a preheating zone or chamber, a shrinking chamber and a finishing chamber, with a fan which draws its supply air from the preheating zone and sends it to the finishing zone.
  • the invention proposes an improved device of the aforementioned type but in which, on an expansion vessel closed by a perforated plate above the fan, are mounted series of flexible hollow tubes receiving for the most part a nozzle. air blowing; said nozzles orientable in all directions being, during operation, in the necking chamber, while at least one flexible tube is connected to a diffuser, fixed or mobile, located in the finishing chamber and whose air Pressurized outlet constitutes a barrier forcing the hot air from the constricted chamber to flow towards the preheating chamber.
  • flexible or flexible tube means either a flexible tube (of the vacuum cleaner pipe type) or a deformable semi-rigid tube.
  • the width adopted for the tunnel is generally that which corresponds substantially to the width of the conveyor.
  • the walls of the tunnel are thermally insulated, for example by glass wool or equivalent insulation introduced between two sheets of sheet metal.
  • Heating of the air intended for the shrinkage operation of the sleeves can be provided by any known means.
  • each nozzle is provided in the sleeve which supports it with electric fin resistors.
  • the electrical resistors can be mounted in the housing or expansion tank which surmounts the fan.
  • a device essentially comprises: a tunnel oven 1 divided into three zones A, B, C and an assembly 2 intended for the suction and the blowing of hot air and fitted with an original air distribution system intended for the heat shrinkage of sleeves on receptacles.
  • the tunnel 1 is made of insulated sheet walls 21 (by glass wool or the like) and adapts substantially to the dimensions of a conventional conveyor 3 of sleeved containers 4 which crosses the tunnel along a continuous path 5 by first crossing the preheating chamber A, then the shrinking or shrinking chamber B and the finishing chamber C. Each chamber or zone is separated by baffles 6 which substantially surround the free space provided for the circulation of the containers 4.
  • the fan 7, driven by the motor 8, draws its air directly, through the line 9, into the preheating chamber A.
  • this fan is surmounted by a hollow box 10 or expansion tank closed by a perforated plate 11 in the holes of which flexible tubes are mounted 12.
  • the number of perforations 13 of the plate 11 can of course be any, for example six, eight, ten or more.
  • Most flexible tubes 12 support at their end a nozzle 14 with pinched edges which delivers a thin air gap corresponding to the width of the selected slot.
  • These series of nozzles 14 surround the sleeved container 4 (see FIG. 2) which circulates in the tunnel at the level of the chamber B where the sleeve is retracted by suitable and very flexible orientation of the air knives coming from the adjustable nozzles.
  • At least one flexible tube 12 ′ is connected to a fixed or mobile diffuser 15 placed in the finishing chamber C.
  • the pressurized air which emanates from this diffuser acts as a barrier at the outlet of the hot air from the shrinking chamber B and forces it to be forced back in the direction of arrow 16 on the side of the preheating chamber A. In this way there is little or no heat loss outside from the tunnel and the warm air from chamber A, instead of escaping into the atmosphere, is recovered directly by the fan 7.
  • the additional heating of this warm air can be obtained by any known means.
  • electrical resistances can be adapted in the mandrel 17 which supports the nozzle 14.
  • resistors can be installed in the housing 10 which surmounts the fan 7.
  • cover or cap 18 of the tunnel 1 is preferably removably mounted in order to be able to intervene, if necessary, during the shrinking operations and allow automatic opening in the event of the conveyor stopping thereby avoiding overheating of products inside the tunnel.
  • the temperature is adjusted by simply spacing the nozzles relative to the sleeved container; in addition, this temperature can be regulated by thermostat at the aforementioned electrical resistances.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP82400224A 1981-02-13 1982-02-09 Appareillage pour la rétraction à chaud de manchons thermoplastique autour de récipients Expired EP0058602B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82400224T ATE9567T1 (de) 1981-02-13 1982-02-09 Vorrichtung zum waermeschrumpfen von thermosplastischen huelsen auf behaeltern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8102809A FR2499941A1 (fr) 1981-02-13 1981-02-13 Appareillage pour la retraction a chaud de manchons thermoplastiques autour de recipients
FR8102809 1981-02-13

Publications (2)

Publication Number Publication Date
EP0058602A1 EP0058602A1 (fr) 1982-08-25
EP0058602B1 true EP0058602B1 (fr) 1984-09-26

Family

ID=9255148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82400224A Expired EP0058602B1 (fr) 1981-02-13 1982-02-09 Appareillage pour la rétraction à chaud de manchons thermoplastique autour de récipients

Country Status (4)

Country Link
EP (1) EP0058602B1 (enrdf_load_stackoverflow)
AT (1) ATE9567T1 (enrdf_load_stackoverflow)
DE (1) DE3260800D1 (enrdf_load_stackoverflow)
FR (1) FR2499941A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7647750B2 (en) * 2005-04-13 2010-01-19 Suntory Holdings Limited Wrapping member attaching method and wrapping member attaching device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2185958A (en) * 1986-02-04 1987-08-05 Secomak Air Products Limited Apparatus for heat-shrinking sleeves onto articles
US4852271A (en) * 1988-03-04 1989-08-01 Owens-Illinois Glass Container Inc. Preheat oven for glass containers
FR2634274B1 (fr) * 1988-07-13 1990-10-19 Sleever Int Procede pour controler la temperature dans un four-tunnel ouvert a ses deux extremites, et dispositif pour la mise en oeuvre du procede
FR2646894B3 (fr) * 1989-05-11 1991-07-12 Sleever Int Procede pour controler la temperature dans un four-tunnel ouvert a ses deux extremites, et dispositif pour la mise en oeuvre du procede
FR2858297B1 (fr) * 2003-07-31 2006-01-20 Sleever Int Procede et machine de thermoretraction de manchons thermoretractables enfiles individuellement sur des objets tels que des bouteilles
JP5087268B2 (ja) * 2006-12-15 2012-12-05 株式会社フジシールインターナショナル シュリンクフィルムの加熱収縮装置
DE102018132737A1 (de) * 2018-12-18 2020-06-18 Krones Aktiengesellschaft Verfahren und Schrumpftunnel zum Aufschrumpfen thermoplastischen Verpackungsmaterials auf Artikel
DE102024100138A1 (de) * 2024-01-03 2025-07-03 Krones Aktiengesellschaft Schrumpftunnel und Verfahren zur Herstellung eines solchen Schrumpftunnels

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB575710A (en) * 1944-03-20 1946-03-01 James Mcdonald Conveyor type heating furnaces
FR1332396A (fr) * 1962-08-25 1963-07-12 Weldotron Corp Appareil et procédé pour le rétrécissement d'enveloppes d'emballage
FR1404840A (fr) * 1964-08-05 1965-07-02 Diamond National Corp Procédé et appareil pour produire des emballages à partir d'une pellicule rétrécissable à la chaleur
US3399506A (en) * 1965-04-01 1968-09-03 Grace W R & Co Process and apparatus for simultaneously heat sealing and heat shrinking film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7647750B2 (en) * 2005-04-13 2010-01-19 Suntory Holdings Limited Wrapping member attaching method and wrapping member attaching device

Also Published As

Publication number Publication date
FR2499941A1 (fr) 1982-08-20
ATE9567T1 (de) 1984-10-15
FR2499941B3 (enrdf_load_stackoverflow) 1983-12-30
DE3260800D1 (en) 1984-10-31
EP0058602A1 (fr) 1982-08-25

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