(19)
(11) EP 0 343 971 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
30.01.1991 Bulletin 1991/05

(43) Date of publication A2:
29.11.1989 Bulletin 1989/48

(21) Application number: 89305276.1

(22) Date of filing: 24.05.1989
(51) International Patent Classification (IPC)4D21H 23/04, D21H 17/74, D21H 17/46, D21H 13/36
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 27.05.1988 US 199618

(71) Applicant: THE CARBORUNDUM COMPANY
Cleveland Ohio 44114-2375 (US)

(72) Inventors:
  • Furlani, Dennis E.
    N. Tonawanda New York 14120 (US)
  • Packard, Kevin D.
    Grand Island New York 14072 (US)
  • Wheeler, Douglas J.
    Buffalo New York 14092 (US)

(74) Representative: Scott, Susan Margaret et al
BP INTERNATIONAL LIMITED Patents & Agreements Division Chertsey Road
Sunbury-on-Thames Middlesex TW16 7LN
Sunbury-on-Thames Middlesex TW16 7LN (GB)


(56) References cited: : 
   
       


    (54) Process for making uncured felt


    (57) A process is disclosed for making uncured felt, the process comprising the steps of (A) mixing refrac­tory fibers and curable particulate polymeric solids of at least one thermosetting polymeric material other than a two-stage phenolic in water to form a slurry; (B) dewatering said slurry and forming felt comprising said solid fibers and said polymeric solids; and (C) drying said felt at a temperature and for a time sufficient to provide desired water removal but not high enough or long enough to cure said polymeric solids, the water content of said felt subsequent to said drying being up to about 25% by weight.





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