EP 1980665 A1 20081015 - PRESS FELT FOR PAPERMAKING
Title (en)
PRESS FELT FOR PAPERMAKING
Title (de)
PRESSFILZ ZUR PAPIERHERSTELLUNG
Title (fr)
FEUTRE DE PRESSE POUR FABRICATION DE PAPIER
Publication
Application
Priority
- JP 2006326405 W 20061228
- JP 2006001000 A 20060106
Abstract (en)
A press felt 10 comprises a base body 30, a wet paper web side batt layer 20, and a press side batt layer 23. The wet paper web side batt layer 20 has a wet paper web contact side batt layer 21 and a base body side batt layer 22, the base body side batt layer 22 being made of a core-in-sheath fiber 41 which has a core member made of high-molecular-weight nylon with an absolute viscosity of 80mPa·s or more and a sheath member made of nylon with a lower melting point than the core member, and the wet paper web contact side batt layer 21 being made of a nylon fiber 42 which does not include the core-in-sheath fiber 41. Rewetting of the wet paper web can be prevented, because water within the press side batt layer 23 is blocked from moving to the wet paper web side due to increased density of the base body side batt layer 22 resulted from melting of the sheath member of the core-in-sheath fiber 41. Moreover, the invention successfully enhances resistance to dehairing, abrasion, and compression fatigue of the press felt by enhancing viscosity of the core member of the core-in-sheath fiber.
IPC 8 full level
D21F 7/08 (2006.01)
CPC (source: EP KR US)
D21F 7/00 (2013.01 - KR); D21F 7/08 (2013.01 - KR); D21F 7/083 (2013.01 - EP US)
Citation (third parties)
Third party :
WO 2005098128 A1 20051020 - EMS CHEMIE AG [CH], et al
Designated contracting state (EPC)
DE FI FR IT SE
DOCDB simple family (publication)
EP 1980665 A1 20081015; EP 1980665 A4 20090325; AU 2006334069 A1 20070712; BR PI0620958 A2 20111129; CA 2636263 A1 20070712; CN 101356313 A 20090128; JP 2007182644 A 20070719; JP 4875895 B2 20120215; KR 20080083124 A 20080916; TW 200736461 A 20071001; US 2009020252 A1 20090122; WO 2007077974 A1 20070712
DOCDB simple family (application)
EP 06843774 A 20061228; AU 2006334069 A 20061228; BR PI0620958 A 20061228; CA 2636263 A 20061228; CN 200680050428 A 20061228; JP 2006001000 A 20060106; JP 2006326405 W 20061228; KR 20087015784 A 20080627; TW 96100314 A 20070104; US 8730006 A 20061228