EP 2131941 A1 20091216 - LAYER FOR USE IN A HEPA FILTER ELEMENT
Title (en)
LAYER FOR USE IN A HEPA FILTER ELEMENT
Title (de)
LAGE ZUR VERWENDUNG IN EINEM HEPA-FILTERELEMENT
Title (fr)
COUCHE UTILISABLE DANS UN ÉLÉMENT-FILTRE HEPA
Publication
Application
Priority
- EP 2007010482 W 20071203
- DE 102007011365 A 20070307
Abstract (en)
[origin: WO2008107006A1] A layer for use in a HEPA filter element solves the problem of disclosing a filter element which satisfies HEPA requirements. Said layer comprises a first support layer (1) for stabilization which contains polypropylene fibers, and a second deposition layer (2) which contains polypropylene fibers, wherein the polypropylene fibers of the deposition layer (2) are at least partially electrostatically charged, and wherein the support layer (1) and the deposition layer (2) are constructed as nonwoven material which is at least partially free of glass fiber. The layer according to the invention can be easily pleated while having excellent filter efficiency.
IPC 8 full level
B01D 39/16 (2006.01); B32B 5/26 (2006.01); B32B 27/02 (2006.01); B32B 27/32 (2006.01)
CPC (source: EP US)
B01D 39/163 (2013.01 - EP US); B01D 46/0032 (2013.01 - EP US); B01D 46/521 (2013.01 - EP US); B32B 5/26 (2013.01 - EP US); D04H 1/4291 (2013.01 - EP US); D04H 1/5412 (2020.05 - EP US); D04H 1/544 (2013.01 - EP US); D04H 1/559 (2013.01 - EP US); D04H 13/00 (2013.01 - EP US); B01D 2239/0435 (2013.01 - EP US); B01D 2239/0668 (2013.01 - EP US); B01D 2275/10 (2013.01 - EP US)
Citation (search report)
See references of WO 2008107006A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102007011365 A1 20080911; DE 102007011365 B4 20090212; AU 2007348647 A1 20080912; AU 2007348647 B2 20100624; CN 101622047 A 20100106; CN 101622047 B 20130123; EP 2131941 A1 20091216; US 2010101199 A1 20100429; US 8709139 B2 20140429; WO 2008107006 A1 20080912
DOCDB simple family (application)
DE 102007011365 A 20070307; AU 2007348647 A 20071203; CN 200780052011 A 20071203; EP 07866229 A 20071203; EP 2007010482 W 20071203; US 52795007 A 20071203