EP 3117723 B1 20181017 - METHOD AND MACHINE FOR MANUFACTURING FILTERS
Title (en)
METHOD AND MACHINE FOR MANUFACTURING FILTERS
Title (de)
VERFAHREN UND MASCHINE ZUR HERSTELLUNG VON FILTERN
Title (fr)
PROCEDE ET MACHINE DE FABRICATION DE FILTRES
Publication
Application
Priority
IT UB20151932 A 20150706
Abstract (en)
[origin: EP3117723A1] A method and a machine (1) for manufacturing coaxial filters (2) without paper for cigarettes (3); two tows (7, 11) of filtering material are fed along respective paths (P1, P2) to an intermediate station (9), where they are brought into contact so as to obtain a combined tow (14) having one of the two tows (7, 11) around the other; the combined tow (14) is treated by means of steam so as to activate the triacetin contained in the tows (7, 11) and thereafter dried to obtain a rod (20) of hardened filtering material without paper; one of the tows (7, 11) is treated by means of steam before reaching the intermediate station (9); in this manner the triacetin binds the tows (7, 11) of filtering material in a particularly homogeneous way.
IPC 8 full level
A24D 3/02 (2006.01)
CPC (source: EP)
A24D 3/0233 (2013.01)
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
DOCDB simple family (publication)
EP 3117723 A1 20170118; EP 3117723 B1 20181017; IT UB20151932 A1 20170106; PL 3117723 T3 20190430
DOCDB simple family (application)
EP 16178272 A 20160706; IT UB20151932 A 20150706; PL 16178272 T 20160706