EP 1161332 A1 20011212 - IMPROVED METHOD OF MAKING MULTICELLULAR FILTERS
Title (en)
IMPROVED METHOD OF MAKING MULTICELLULAR FILTERS
Title (de)
VERBESSERTE METHODE ZUR HERSTELLUNG VIELZELLIGER FILTER
Title (fr)
PROCEDE AMELIORE DE FABRICATION DE FILTRES MULTICELLULAIRES
Publication
Application
Priority
- US 0001929 W 20000127
- US 25079999 A 19990217
Abstract (en)
[origin: WO0048807A1] A method of plugging honeycomb cells (12) involves providing a honeycomb having an inlet end and an outlet end and a multiplicity of cells (12) extending from inlet end to outlet end, and introducing the sealant material (16) into pre-selected honeycomb cell openings by capillary action to form a plug on said pre-selected cell openings. The sealant can also be thermoplastic polymer preform having sections corresponding to the cell openings on a given surface of a honeycomb. The preform is positioned on the honeycomb surface having the pre-selected cell openings so that the perform is inserted into the pre-selected cell openings. The pre-selected cell openings are heated to allow the preform to deform into a thermoplastic sealing material and bond to inside walls of the pre-selected cell openings, to produce a plugged honeycomb with plugs securably positioned into the selected cell openings.
IPC 1-7
IPC 8 full level
B01D 39/00 (2006.01); B01D 29/11 (2006.01); B29C 31/04 (2006.01); B29C 70/74 (2006.01)
CPC (source: EP KR)
B01D 29/111 (2013.01 - EP); B01D 29/31 (2013.01 - EP); B28B 1/26 (2013.01 - KR); B29C 31/04 (2013.01 - EP); B29C 70/745 (2013.01 - EP); B01D 2201/46 (2013.01 - EP); B29L 2031/14 (2013.01 - EP); B29L 2031/608 (2013.01 - EP)
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
WO 0048807 A1 20000824; EP 1161332 A1 20011212; EP 1161332 A4 20020807; JP 2002537100 A 20021105; KR 20010101807 A 20011114
DOCDB simple family (application)
US 0001929 W 20000127; EP 00904577 A 20000127; JP 2000599572 A 20000127; KR 20017009942 A 20010807