公开(公告)号：EP1024873A1

公开(公告)日：2000-08-09

申请号：EP98948603.0

申请日：1998-10-02

申请人： Cuno Incorporated

发明人： SALE, Richard, D. ,  SCHIMMEL, Mark, W. ,  PRINCE, Richard, A. ,  ROESSLER, Norbert

IPC分类号： B01D25/00 ,  B01D25/176 ,  B01D39/08

CPC分类号： B01D25/001 ,  B01D25/176 ,  B01D2201/34 ,  B01D2239/0464 ,  B01D2239/0478 ,  B01D2239/065 ,  B01D2239/0654 ,  B01D2239/0668 ,  B01D2239/10 ,  B01D2239/1291 ,  Y10T428/24777 ,  Y10T428/31801

摘要： A filter sheet positioned between plates (14) of a filter press has a fluid-impermeable wax layer (11) sealing the sheet's perimeter. The wax preferably comprises ethylene bis stearamide and has a durometer reading of about 75 to about 100 Shore A hardness at 25 DEG C. and 85 DEG C., a melt point of about 110 DEG C. to about 180 DEG C., and a viscosity of less than about 100 cp at 155 DEG C. The wax layer increases the useful life of the filter sheet while providing a sheet which is easily released from a filter press and which retains integrity along the seal during repeated hot water sanitations.