ATBECHDEDKESFRGBGRITLILUNLSEMCPTIESILTLVFIROMKCYALTRBGCZEEHUPLSKBAHRISYUMT......JDIM360 (Ver 1.5 21 Nov 2005) - 1990980/0 1620000/01852021EUROPEAN PATENT APPLICATIONA320071219EP07106035.420070412itenenBO2006027320060413IT2007121920075120071107200745A24D 3/00 20060101AFI20071004BHEP D02J 1/18 20060101ALI20071112BHEP deGebläsevorrichtung zur Ausdehnung von Endlosbahnen aus FiltermaterialenA blower device for expanding continuous webs of filter materialfrDispositif soufflant pour expanser des toiles continues de matériau filtrant2G.D.S.p.A.0732891061.G2475.EP1457Via Battindarno, 9140133 BolognaITRighetti, MarcoVia Martiri di Colle Ameno, 1540033, Casalecchio di Reno (Bologna)ITGianese, GiampaoloVia 8 Marzo, 3040037, Sasso Marconi (Bologna)ITTurrini, ArmandoVia Crevalcore, 1/240017, San Giovanni in Persiceto (Bologna)ITBalletti, LeonardoVia Seminario, 6440068, San Lazzaro di Savena (Bologna)ITGhioni, Carlo Raoul Mariaet al00087526Bugnion S.p.A. Via Goito, 1840126 BolognaITATBEBGCHCYCZDEDKEEESFIFRGBGRHUIEISITLILTLULVMCMTNLPLPTROSESISKTRALBAHRMKYU20071219200751

Compacted filter tow is drawn out initially into continuous webs (7) and then expanded by a blower device (1) comprising at least one blower unit (12) connected by way of an air delivery duct (13) to an air flow control system (14) equipped with at least two open/close valves (16) controlling relative air outlet ducts (17); also forming part of the air flow control system (14) is a plenum chamber (19), operating in conjunction with a pressure control circuit (20) in such a way as to maintain a steady equalizing pressure internally of the chamber (19).