Verfahren und vorrichtung zum erwaermen von vorformlingen

Heating thermoplastic parison interior - by locking parison in vertical position, blowing hot air through central tube positioned inside it, and venting air round this tube

Abstract

A thermoplastic parison is heated by at least one part of its outer surface; at least one part of its inside face is also heated, using a hot gas for the purpose. A prefd. parison is made of polyethyleneterephthalate. More specifically, a parison is placed on a tool and subjected to external heating together with internal heating by hot gas which flows through a heater to a centre tube and its open end in the parison. The parison rests on the base of the tool whose top is conveniently tapered. A flange is gripped by an outer tool. The cooled hot air is vented out through the space. If desired the incoming air is also dried. The system can be fitted with automatic controls e.g. to raise the temp. of the air; the air flow can be modified to suit the shape of the parison. The equipment can e.g. move the parison during heating.

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    DE-2324920-B2February 15, 1979Owens-Illinois, Inc., Toledo, Ohio (V.St.A.)
    US-4846656-AJuly 11, 1989SidelApparatus for heat treatment of preform necks

NO-Patent Citations (0)

    Title

Cited By (22)

    Publication numberPublication dateAssigneeTitle
    DE-10058950-A1April 25, 2002Advanced Photonics Tech AgVerfahren zum Streckblasen und Erwärmungsstrecke
    DE-10058950-B4April 06, 2006Advanced Photonics Technologies AgErwärmungsstrecke und Verfahren zum Streckblasen
    DE-10141639-A1March 06, 2003Sig Pettec Gmbh & Co KgThermoplastic blank tempering comprises using a heat radiating unit which has electrical connections, a carrier and a reflector
    DE-19545024-B4February 17, 2005Sig Corpoplast Gmbh & Co. KgVerfahren zur Herstellung von Behältern
    EP-0620099-A1October 19, 1994SidelProcédé et installation pour le traitement thermique du corps d'une préforme ou d'un récipient intermédiaire en matériau thermoplastique
    FR-2703944-A1October 21, 1994Sidel SaProcédé et installation pour le traitement thermique du corps d'une préforme en matériau thermoplastique.
    US-5681521-AOctober 28, 1997SidelProcess and equipment for heat treatment of the body of a preform or of an intermediate-stage container made of a thermoplastic material
    US-5744176-AApril 28, 1998Nissei Asb Machine Co., Ltd.Injection stretch blow molding apparatus
    US-5753279-AMay 19, 1998Nissei Asb Machine Co., Ltd.Injection stretch blow molding apparatus
    US-5869110-AFebruary 09, 1999Nissei Asb Machine Co., Ltd.Container molding apparatus
    US-5972255-AOctober 26, 1999Nissel Asb Machine Co., Ltd.Injection stretch blow molding apparatus and method with discharge guide
    US-6019933-AFebruary 01, 2000Takada; Minoru, Sato; Koichi, Yokobayashi; Kazuyuki, Ogihara; ShuichiInjection stretch blow molding method with upright preform molding and inverted blow molding
    US-6109907-AAugust 29, 2000Takada; Minoru, Sato; Koichi, Yokobayashi; Kazuyuki, Ogihara; ShuichiInjection stretch blow molding apparatus with preform heating and guide member
    US-6113840-ASeptember 05, 2000SidelProcess for heat treatment of the body of a preform or of an intermediate-stage container made of a thermoplastic material
    US-6168749-B1January 02, 2001Krupp Corpoplast Maschinenbau GmbhMethod of manufacturing containers
    US-6247916-B1June 19, 2001Nissei Asb Machine Co., Ltd.Injection stretch blow molding apparatus with upright preform molding and inverted blow molding
    US-6258313-B1July 10, 2001Container Corporation International Inc.Stretch blow molding process and apparatus for the manufacturing of plastic containers
    US-6848899-B2February 01, 2005Nissei Asb Machine Co., Ltd.Injection stretch blow molding device with transfer station and pitch changing for blow molding
    US-8729431-B2May 20, 2014Krones AgFurnace for conditioning preforms
    WO-9423932-A1October 27, 1994S I D E LProcede et installation pour le traitement thermique du corps d'une preforme ou d'un recipient intermediaire en materiau thermoplastique
    WO-9608356-A2March 21, 1996Nissei Asb Machine Co., Ltd.Procede et appareil de moulage par injection-etirage-soufflage
    WO-9608356-A3July 18, 1996Nissei Asb Machine Co LtdProcede et appareil de moulage par injection-etirage-soufflage