EP1272331A1 - Procede et dispositif de temperage de preformes - Google Patents

Procede et dispositif de temperage de preformes

Info

Publication number
EP1272331A1
EP1272331A1 EP01916904A EP01916904A EP1272331A1 EP 1272331 A1 EP1272331 A1 EP 1272331A1 EP 01916904 A EP01916904 A EP 01916904A EP 01916904 A EP01916904 A EP 01916904A EP 1272331 A1 EP1272331 A1 EP 1272331A1
Authority
EP
European Patent Office
Prior art keywords
preforms
movement
translation
heating device
drive
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Withdrawn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
EP01916904A
Other languages
German (de)
English (en)
Inventor
Udo Schneider
Modesto Pesavento
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.)
KHS GmbH
Original Assignee
KHS Corpoplast GmbH
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 KHS Corpoplast GmbH filed Critical KHS Corpoplast GmbH
Publication of EP1272331A1 publication Critical patent/EP1272331A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6409—Thermal conditioning of preforms
    • B29C49/6436—Thermal conditioning of preforms characterised by temperature differential
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6409—Thermal conditioning of preforms
    • B29C49/6436—Thermal conditioning of preforms characterised by temperature differential
    • B29C49/6458—Thermal conditioning of preforms characterised by temperature differential tangentially, i.e. along circumference
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/68—Ovens specially adapted for heating preforms or parisons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/68—Ovens specially adapted for heating preforms or parisons
    • B29C49/685—Rotating the preform in relation to heating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages

Definitions

  • the invention relates to a method for tempering preforms made of a thermoplastic material, the preforms being provided for blow molding in containers, in which the preform is provided with a temperature profile along a circumference, and in which the preforms are guided along at least one heating device along a translation path and are at least temporarily rotated with respect to their longitudinal axes.
  • the invention further relates to a device for tempering preforms made of a thermoplastic material, the at least one conveyor line for the preforms and at least one Has heating device and provides the preforms with a temperature profile in the circumferential direction of the preforms, and in which a rotary drive is provided to carry out a rotational movement of the preforms and a translational drive is provided to move the preforms past the heating device.
  • Such a method is used, for example, when containers are to be produced whose cross-section deviates from a circular shape.
  • the deviation can consist, for example, of producing containers with an oval cross section or, for example, with a triangular or square cross section.
  • EP-OS 0 620 099 contains a compilation of methods known from the prior art for the temperature conditioning of preforms.
  • this publication also explains how to guide the preform past an alternating arrangement of heating elements and cool areas in such a way that the desired temperature profile is provided by coordinating the distances and the dimensions of the respective heating devices with the translation speed and the rotational speed of the preforms being passed.
  • such an arrangement requires an unnecessarily large spatial extension, a large number of parameters have to be matched exactly to one another and an adaptation to different product requirements has proven to be extremely complex.
  • DE-OS 196 08 570 describes a method in which a simplified constructional implementation is made possible by a stepwise rotation of the preforms to be provided with the temperature profile.
  • DE-OS 197 57 818 explains a method and a device in which the preforms are held by support elements which can be pivoted about cam rollers along a cam track around their respective longitudinal axes and thereby support the application of a temperature profile in the circumferential direction.
  • Such a device is particularly suitable for the temperature control of a large number of preforms per heating unit, but here, too, changes in the product requirements cause relatively high changes.
  • control of the rotary movement is carried out at least temporarily decoupled from the translation movement and in that the control of the translation movement is carried out in such a way that peripheral regions of the preforms to be heated to a greater temperature face the heating device than peripheral regions of the preforms to be cooled to a longer temperature.
  • Another object of the present invention is to construct a device of the type mentioned in the introduction in such a way that the production of containers with different circumferential geometries is facilitated.
  • the rotary drive has a control decoupled from the translation drive and in that the control has a setpoint generator for a time-variable setpoint profile of the
  • an expedient implementation consists in the fact that at least two preforms are transported clocked at the same time.
  • the preforms be rotated while the translation movement is interrupted.
  • the rotary movement is at least temporarily superimposed on a translation movement.
  • a simple movement control is supported in that the rotary movement is carried out step by step.
  • Another variant of the method is that the rotary movement is carried out continuously at least in sections.
  • a further increase in the design options when specifying the temperature profile can be achieved in that the rotary movement is carried out with an alternating direction of rotation.
  • the preforms are heated essentially from a predeterminable direction.
  • a high heating effectiveness can be supported in that the preforms are heated from two directions that are essentially opposite to each other.
  • the preforms, carried by a support element, are guided past the heating device.
  • a high heating intensity is supported in that the heating device is provided with radiant heaters.
  • An easy positioning of the support element can be supported in that the support elements are provided with a guide profile for specifying their respective rotational positioning.
  • a high degree of accuracy in specifying the rotational movements can be supported in that the rotary drive is designed as a gear drive.
  • a simple mechanical structure is supported in that the rotary drive has a rotating drive element.
  • the rotational movement can be supported in that at least one turntable positioned by the rotary drive is arranged along the translation path.
  • a division of the translation path into areas in which a rotational movement is carried out and in areas in which no rotational movement is carried out is supported in that at least two turntables are arranged along the translation path, between which a curve segment is positioned.
  • the rotary drive is designed as a stepper motor.
  • Exemplary embodiments of the invention are shown schematically in the drawing. Show it:
  • Fig. 1 is a schematic representation of a part of the translation path of the preforms in the area of the heating device with an alternating arrangement of guide rails and turntables for guiding control rollers which are attached to support elements for the preforms.
  • FIG. 3 shows a schematic illustration of two heating elements arranged opposite one another with a schematically illustrated positioning of a preform during a cyclical translation movement
  • FIG. 5 shows the arrangement according to FIG. 4 when a rotary movement is carried out and simultaneous continuous heating
  • FIG. 6 the arrangement according to FIG. 5 during the execution of a second double-sided heating phase
  • Fig. 7 shows the arrangement of FIG. 6 when performing a further rotary movement with continuous heating
  • FIG. 8 shows the arrangement according to FIG. 7 with a schematically illustrated exit movement of the preform from the area of the heating device.
  • FIG. 1 shows a basic illustration of a positioning device (1) which is arranged in the area of a heating section (2) of a blowing device.
  • the positioning device (1) consists of cam segments (3) and turntables (4).
  • the curve segments (3) and the turntable (4) are each arranged alternately along a translation path (5) of preforms (6) shown in FIG. 2.
  • the curve segments (3) and the turntable (4) are provided with guide grooves (7), which are provided for aligning cam rollers (8), which are fastened to support elements (9) for the preforms (6) shown in FIG. 2.
  • the turntables (4) have gears which are not visible in FIG. 1 and which cooperate with a toothed belt system, a drive chain or other suitable drive elements.
  • the toothed belt (10) is positioned by a rotary drive (11).
  • the turntables (4) are provided with markings (12) which are detected by sensors (13). Through the Sensor monitoring of the markings (12) ensures that the turntables (4) are aligned.
  • Heating devices (14) can be arranged on both sides or on one side along the translation path (5).
  • the heating devices (14) can be provided with IR radiators, for example. In principle, however, other heating elements can also be used, for example HF radiators or blowers for hot air.
  • the structure of a preferred embodiment for the support elements (9) results from the vertical sectional view in FIG. 2.
  • the support elements (9) are positioned by support elements (15) which are connected to the support elements (9) in the area of support arms (16) via rotary bearings (17, 18).
  • the preforms (6) can be slipped onto the support elements (9) in the vertical direction from above.
  • the cam roller (8) is laterally offset from a longitudinal axis (19) of the support element (9). This causes a pivoting movement of the support element (9) relative to its longitudinal axis (19) when the cam roller (8) is pivoted.
  • the support elements (15) guide the support elements (9) in the vertical direction above the curve segments (3) and the turntable (4) in such a way that the cam roller (8) of the support element (9) is guided in the guide grooves (7).
  • cam rollers (8) has advantages in reducing frictional forces.
  • the arrangement shown in FIG. 1 is particularly advantageous for preforms (6) which are transported in cycles along the translation path (5).
  • the cyclical translation movement is expediently carried out in such a way that the cam rollers (8) are guided within the cam segments (3) during the movement phases and that the cam rollers (8) are positioned in the region of the turntable (4) during the respective rest phases.
  • the turntable (4) rotates, the support elements (9) and the preforms (6) held thereby are rotated.
  • toothed belt (10) or comparable drive elements act directly on the support elements (9).
  • the specific constructive implementation depends on the respective application requirements.
  • FIGS. 3 to 8 The implementation of a heating process for generating a temperature profile in the circumferential direction of the preforms (6) is explained in FIGS. 3 to 8.
  • the same positioning of the heating section (2) is shown locally, which in this case is provided with two heating devices (14) located opposite one another.
  • the preform (6) is first positioned between the two heating devices (14).
  • the Positioning is preferably carried out at substantially equal distances from the two heating devices (14).
  • the regions of the preform (6) facing the two heating devices are first heated. Because of their lateral positioning facing away from the heating devices (14), the transition areas between the heated zones of the preform (6) initially remain cooler than the areas directly facing the heating devices (14).
  • the arrangement of the heating devices (14) opposite one another means that no rotation of the preforms (6) is required to generate a temperature profile in the circumferential direction.
  • the rotational movement shown in FIG. 5 makes it possible to influence the temperature distribution in the transition area between the two already heated wall sections of the preform (6). Influencing results from the speed, the course of the speed and the number of revolutions of the preform (6).
  • FIG. 6 shows a further heating phase in which, as in the illustration in FIG. 4, there is no rotational movement of the preform (6). 7, the preform (6) is again rotated.
  • Direction of rotation can vary depending on generating temperature profile can be specified.
  • Fig. 8 shows schematically the continuation of the translation movement of the preform (6) for further transport.
  • the preforms (6) can be fed to different heating devices (14) one after the other in order to realize the final temperature profile to be generated.
  • the paired arrangement of heating devices (14) supports the generation of symmetrical temperature profiles with a short heating time.
  • thermoforming the preform (6) uniformly in advance and then to generate the temperature profile using the movement described. It is also possible to provide a sequence of movements of the preform (6) during rotation such that the temperature profile is reached starting from a cold preform (6) through the respective movement phases.
  • thermoplastic materials can be processed in accordance with the described method and with the aid of the described device.
  • the preform (6) is initially tempered substantially uniformly in the area to be tempered and then provided with a superimposed temperature profile
  • this tempering process is also both in the circumferential direction of the preform (6) and in the longitudinal direction of the preform (6) or combined in both spatial orientations.
  • the heat profile in the longitudinal direction is selected in particular so that a high and uniform orientation of the material is achieved in order to ensure both a good resistance of the blown container and a low use of material.
  • clamping rings can be used to fix the preforms (6) in the area of the support elements (9).
  • the intermittently operated devices are implemented in particular in connection with the implementation of the one-step process, in which the preforms (6) are first injection molded in the area of an injection molding module and transferred to a blow molding module after demolding and a suitable intermediate temperature control. In the area of the blow module, the preforms are then stretched and inflated by the action of compressed air. These process steps lead to a biaxial orientation of the material.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant le tempérage de préformes en matière thermoplastique. Les préformes sont destinées à être moulées en contenants par soufflage. Les préformes sont dotées sur leur périphérie d'un profil de température et, pendant leur tempérage le long d'une section de translation, elles passent à côté d'au moins un dispositif de chauffage (14). En outre, les préformes sont, au moins par intermittence, entraînées en rotation autour de leur axe longitudinal. Une commande du mouvement de rotation (8) est, au moins par intermittence, découplée du mouvement de translation. La commande du mouvement de translation est exécutée de telle façon que les zones périphériques des préformes, à tempérer à une température plus chaude, sont tournées vers le dispositif de chauffage plus longtemps que celles à tempérer à une température plus froide. La commande présente un générateur de consigne pour une évolution variable dans le temps des valeurs théoriques de la vitesse de rotation des préformes.
EP01916904A 2000-03-16 2001-03-03 Procede et dispositif de temperage de preformes Withdrawn EP1272331A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10012765A DE10012765A1 (de) 2000-03-16 2000-03-16 Verfahren zur Temperierung von Vorformlingen sowie Vorrichtung zur Temperierung
DE10012765 2000-03-16
PCT/DE2001/000842 WO2001068350A1 (fr) 2000-03-16 2001-03-03 Procede et dispositif de temperage de preformes

Publications (1)

Publication Number Publication Date
EP1272331A1 true EP1272331A1 (fr) 2003-01-08

Family

ID=7634914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01916904A Withdrawn EP1272331A1 (fr) 2000-03-16 2001-03-03 Procede et dispositif de temperage de preformes

Country Status (6)

Country Link
EP (1) EP1272331A1 (fr)
JP (1) JP2003526544A (fr)
AU (1) AU2001244075A1 (fr)
CA (1) CA2403367A1 (fr)
DE (1) DE10012765A1 (fr)
WO (1) WO2001068350A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4831342B2 (ja) 2006-12-08 2011-12-07 東洋製罐株式会社 プリフォーム加熱システム
DE102010044828A1 (de) * 2010-09-09 2012-03-15 Krones Aktiengesellschaft Vorrichtung und Verfahren zur Herstellung ovaler Kunststoffbehältnisse
DE102014118292A1 (de) * 2014-12-10 2016-06-16 Krones Aktiengesellschaft Vorrichtung und Verfahren zum Erwärmen von Kunststoffvorformlingen mit Profilierung
IT201800003400A1 (it) * 2018-03-09 2019-09-09 Smi Spa Forno per preforme
JPWO2022181627A1 (fr) * 2021-02-25 2022-09-01
DE102021133797A1 (de) * 2021-12-20 2023-06-22 Krones Aktiengesellschaft Vorrichtung und Verfahren zum Herstellen von Kunststoffbehältnissen mit nicht kreisförmigen Querschnitten
DE102021133791A1 (de) 2021-12-20 2023-06-22 Krones Aktiengesellschaft Vorrichtung und Verfahren zum Herstellen von Kunststoffbehältnissen mit nicht kreisförmigen Querschnitten
DE102021133783A1 (de) 2021-12-20 2023-06-22 Krones Aktiengesellschaft Vorrichtung und Verfahren zum Herstellen von Kunststoffbehältnissen mit nicht kreisförmigen Querschnitten

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5292243A (en) * 1992-09-28 1994-03-08 Cincinnati Milacron Inc. Apparatus for heating portions of container preforms
FR2703944B1 (fr) * 1993-04-15 1995-06-23 Sidel Sa Procédé et installation pour le traitement thermique du corps d'une préforme en matériau thermoplastique.
DE19608570A1 (de) * 1996-03-06 1997-09-11 Krupp Corpoplast Masch Verfahren zur Temperierung von Vorformlingen sowie Vorrichtung zur Temperierung
US5853775A (en) * 1997-12-05 1998-12-29 Electra Form, Inc. Non-Round container blow molding apparatus
DE19757818A1 (de) * 1997-12-24 1999-07-01 Krupp Corpoplast Masch Verfahren zur Temperierung von Vorformlingen sowie Vorrichtung zur Temperierung
DE19906438A1 (de) * 1999-02-16 2000-08-17 Krupp Corpoplast Masch Verfahren und Vorrichtung zur Übergabe von Behältern
US6146134A (en) * 1999-05-20 2000-11-14 Husky Injection Molding Systems Ltd. Oven-pallet alignment and profiled heating of preforms

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0168350A1 *

Also Published As

Publication number Publication date
JP2003526544A (ja) 2003-09-09
CA2403367A1 (fr) 2001-09-20
WO2001068350A1 (fr) 2001-09-20
AU2001244075A1 (en) 2001-09-24
DE10012765A1 (de) 2001-09-20

Similar Documents

Publication Publication Date Title
EP1042113B1 (fr) Dispositif pour l'etuvage de preformes, et procede d'etuvage
DE2856132C2 (de) Vorrichtung zum Herstellen von biaxial orientierten Hohlkörpern
EP3423254B1 (fr) Dispositif de chauffage et procédé pour le conditionnement thermique de préformes destinées au moulage par soufflage
DE3121524C2 (fr)
DE19608570A1 (de) Verfahren zur Temperierung von Vorformlingen sowie Vorrichtung zur Temperierung
EP2213435B1 (fr) Dispositif de chauffage pour ébauches en plastique
EP0387737B1 (fr) Procédé pour réchauffer des préformes injectées prélevées d'une réserve, pour les souffler enfin dans un moule de soufflage et en faire des corps creux et procédé pour le moulage par soufflage de préformes préfabriquées
DE2908122C2 (de) Verfahren zum Erwärmen von Vorformlingen für das Blasformen von Behältern aus thermoplastischem Kunststoff
EP2428347B1 (fr) Dispositif et procédé destinés à la fabrication de récipients ovales en matière plastique
DE69106843T2 (de) Verbesserte Methode und Apparat zum Formen von thermoplastischen Rohren.
EP0565874A1 (fr) Procédé et appareil pour réchauffer une préforme retirée d'un stock et produite par injection d'un matériau plastique partiellement cristallin
DE2339019A1 (de) Verfahren und vorrichtung zur herstellung von hohlkoerpern durch aufblasen von vorformlingen
DE3307761A1 (de) Dielektrischer heizabschnitt in einer blasformmaschine
EP1272331A1 (fr) Procede et dispositif de temperage de preformes
EP3419807B1 (fr) Dispositif de chauffage pour le conditionnement thermique de préformes destinées au moulage par soufflage
EP2439047A2 (fr) Dispositif et procédé destinés au chauffage d'ébauches en plastique
EP3088162B1 (fr) Dispositif et procede destines au chauffage d'ebauches en plastique a l'aide de micro-ondes ayant des reflecteurs de sol pouvant etre adaptes
DE2557192A1 (de) Vorrichtung zur kontinuierlichen herstellung von orientierten hohlkoerpern aus thermoplastischem werkstoff
DE102007016028A1 (de) Verfahren und Vorrichtung zur Blasformung von Behältern
DE4129881A1 (de) Kunststoffprofileigenverstaerkung
EP3558630B1 (fr) Procédé et dispositif pour la fabrication de récipients remplis à partir de préformes thermiquement conditionnées
EP4230381A1 (fr) Procédé de chauffage et dispositif de chauffage pour le conditionnement thermique de préformes avec des zones périphériques marquées par la température (preferential heating)
WO2003055665A1 (fr) Procede et dispositif d'equilibrage de temperature de preformes
EP4269066A1 (fr) Procédé de chauffage et dispositif de chauffage pour le conditionnement thermique de préformes, ainsi que machine de fabrication de récipients pour le formage de préformes avec un dispositif de chauffage
DE10141639A1 (de) Vorrichtung zur Temperierung von Vorformlingen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20020902

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17Q First examination report despatched

Effective date: 20040211

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20041112