EP 4041524 A1 20220817 - BLOWN FILM INSTALLATION AND METHOD FOR PRODUCING TUBULAR FILMS OR FILM WEBS
Title (en)
BLOWN FILM INSTALLATION AND METHOD FOR PRODUCING TUBULAR FILMS OR FILM WEBS
Title (de)
BLASFOLIENANLAGE UND VERFAHREN ZUR HERSTELLUNG VON FOLIENSCHLÄUCHEN ODER FOLIENBAHNEN
Title (fr)
INSTALLATION DE FILM SOUFFLÉ ET PROCÉDÉ DE FABRICATION DE FILMS OU DE BANDES DE FILM TUBULAIRES
Publication
Application
Priority
- DE 102019215492 A 20191009
- EP 2020078068 W 20201007
Abstract (en)
[origin: WO2021069474A1] The invention relates to a blown film installation for producing tubular films or film webs, comprising a nozzle head for extruding a tubular film, a lay-flat implement and/or a squeezing device for laying flat and/or squeezing the tubular film in order to produce a double-layer film web from the tubular film, and a stretching device, by which the double-layer film web can be stretched in the longitudinal direction. At least a first and at least a second thickness measuring device for measuring the thickness of layers of the film web are provided downstream of the stretching device, wherein the thickness of a single layer of the film web can be measured by means of at least one of the thickness measuring devices.
IPC 8 full level
B29C 48/10 (2019.01); B29C 48/92 (2019.01); B29C 55/28 (2006.01)
CPC (source: EP)
B29C 48/0018 (2019.01); B29C 48/0022 (2019.01); B29C 48/10 (2019.01); B29C 48/92 (2019.01); B29C 55/28 (2013.01); B29C 2948/92152 (2019.01); B29C 2948/92647 (2019.01)
Citation (search report)
See references of WO 2021069474A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102019215492 A1 20210415; EP 4041524 A1 20220817; WO 2021069474 A1 20210415
DOCDB simple family (application)
DE 102019215492 A 20191009; EP 2020078068 W 20201007; EP 20788754 A 20201007