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1. WO2020094647 - METHOD AND DEVICE FOR CONTROLLING THE NOZZLE GAP OF THE OUTLET NOZZLE OF A FLAT FILM MACHINE

Publication Number WO/2020/094647
Publication Date 14.05.2020
International Application No. PCT/EP2019/080254
International Filing Date 05.11.2019
IPC
B29C 48/31 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
30Extrusion nozzles or dies
305having a wide opening, e.g. for forming sheets
31adjustable
B29C 48/08 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
03characterised by the shape of the extruded material at extrusion
07Flat, e.g. panels
08flexible, e.g. films
B29C 48/25 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
B29C 48/92 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
92Measuring, controlling or regulating
B29C 48/10 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
03characterised by the shape of the extruded material at extrusion
09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
10flexible, e.g. blown foils
Applicants
  • WINDMÖLLER & HÖLSCHER KG [DE]/[DE]
Inventors
  • BACKMANN, Martin
  • SCHMITZ, Torsten
Agents
  • VOGEL, Andreas
Priority Data
10 2018 127 673.706.11.2018DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN UND VORRICHTUNG ZUR KONTROLLE DES DÜSENSPALTES EINER AUSTRITTSDÜSE VON EINER FLACHFOLIENMASCHINE
(EN) METHOD AND DEVICE FOR CONTROLLING THE NOZZLE GAP OF THE OUTLET NOZZLE OF A FLAT FILM MACHINE
(FR) PROCÉDÉ ET DISPOSITIF PERMETTANT DE CONTRÔLER LA FENTE DE BUSE D’UNE BUSE DE SORTIE D’UNE MACHINE DE PRODUCTION DE FEUILLES PLATES
Abstract
(DE)
Die Erfindung betrifft ein Verfahren für eine Kontrolle eines Düsenspaltes (112) einer Austrittsdüse (110) für eine Folienbahn (FB) einer Flachfolienmaschine (100), aufweisend die folgenden Schritte: - Erfassen eines Ist-Profils (IP) des Düsenspaltes (112), - Ermitteln eines Dickenprofils (DP) der Folienbahn (FB), - Vergleich des ermittelten Dickenprofils (DP) der Folienbahn (FB) mit einem Vorgabe profil (VP), - Bestimmen einer Profilabweichung (PA) als Ergebnis des Vergleichs, - Durchführen eines Kontrolleingriffs zur Veränderung des Düsenspaltes (112) auf Basis der Profilabweichung (PA) und des Ist-Profils (IP).
(EN)
The invention relates to a method for controlling the nozzle gap (112) of the outlet nozzle (110) for a film sheet (FB) of a flat film machine (100), having the following steps: - detecting an actual profile (IP) of the nozzle gap (112), - ascertaining a thickness profile (DP) of the film sheet (FB), - comparing the ascertained thickness profile (DP) of the film sheet (FB) with a specification profile (VP), - determining a profile deviation (PA) as the result of the comparison, and - carrying out a control engagement in order to change the nozzle gap (112) on the basis of the profile deviation (PA) and the actual profile (IP).
(FR)
L’invention concerne un procédé permettant de contrôler une fente de buse (112) d’une buse de sortie (110) pour une bande continue (FB) d’une machine de production de feuilles plates (100), ledit procédé comprenant les étapes suivantes : détecter un profil réel (IP) de la fente de buse (112), déterminer un profil d’épaisseur (DP) de la bande continue (FB), comparer le profil d’épaisseur (DP) déterminé de la bande continue (FB) avec un profil par défaut (VP), déterminer un écart de profil (PA) comme résultat de la comparaison, effectuer une opération de contrôle permettant de modifier la fente de buse (112), sur la base de l’écart de profil (PA) et du profil réel (IP).
Also published as
Latest bibliographic data on file with the International Bureau