EP 0156587 A1 19851002 - Improved pressboard and process for its preparation.
Title (en)
Improved pressboard and process for its preparation.
Title (de)
Pressplatte und Verfahren zu ihrer Herstellung.
Title (fr)
Panneau comprimé et son procédé de production.
Publication
Application
Priority
- US 58960184 A 19840314
- US 69779785 A 19850204
Abstract (en)
High temperature resistant pressboard comprised of 20-95% by weight aromatic polyamide fibrids and 80-5% by weight high temperature resistant floc, having a desirable combination of compression set values and oil absorption is prepared by a process whereby a low density pressboard is first prepared by forming a wet lap of multiple layers of a waterleaf containing 50-95% by weight water and pressing the wet lap at 100-200 DEG C under a pressure of 10-60 kg/cm<2>, drying, ultimately at 270-320 DEG C until substantially no further moisture is evolved and finally pressing at 270-320 DEG C under a pressure of 8-350 kg/cm<2> and optionally cooling under restraint.
IPC 1-7
IPC 8 full level
C08J 5/18 (2006.01); D21H 13/26 (2006.01); D21H 13/40 (2006.01); H01B 3/52 (2006.01)
CPC (source: EP KR)
D21H 5/1272 (2013.01 - EP); D21H 13/26 (2013.01 - EP KR); H01B 3/52 (2013.01 - EP)
Citation (search report)
- DE 2600209 A1 19760722 - MITSUBISHI RAYON CO
- US 4228218 A 19801014 - TAKAYANAGI MOTOWO, et al
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0156587 A1 19851002; EP 0156587 B1 19901227; AU 3975585 A 19850919; AU 578270 B2 19881020; BR 8501096 A 19851105; CA 1242853 A 19881011; DE 3581099 D1 19910207; DK 115685 A 19850915; DK 115685 D0 19850313; ES 541208 A0 19860516; ES 8607451 A1 19860516; GR 850657 B 19850711; JP 2733456 B2 19980330; JP H07324296 A 19951212; JP H0762319 B2 19950705; JP S60209100 A 19851021; KR 850006461 A 19851005; KR 900008535 B1 19901124; MX 167850 B 19930415
DOCDB simple family (application)
EP 85301728 A 19850313; AU 3975585 A 19850312; BR 8501096 A 19850312; CA 476568 A 19850314; DE 3581099 T 19850313; DK 115685 A 19850313; ES 541208 A 19850313; GR 850100657 A 19850314; JP 11649495 A 19950418; JP 4946185 A 19850314; KR 850001634 A 19850314; MX 20460885 A 19850313