EP 0330635 A1 19890830 - Substantially inorganic fibrous material and method for the production thereof.
Title (en)
Substantially inorganic fibrous material and method for the production thereof.
Title (de)
Hauptsächlich anorganische Faserstoffe und Verfahren zu ihrer Herstellung.
Title (fr)
Matières fibreuses minérales et méthode pour leur préparation.
Publication
Application
Priority
SE 8800661 A 19880226
Abstract (en)
A substantially inorganic fibrous sheet material and a method and a filler for the production thereof are disclosed. The sheet material comprises (a) cationic inorganic fibres, (b) a cationic inorganic filler including a mixture of talc and soapstone, (c) an anionic binder including an anionic polyelectrolyte and, optionally, cellulose fibres, and (d) strength-improving additives including thermoplastic polymer particles. To produce the sheet material, a stock is formed of the above-mentioned components, the stock charge being adjusted such that a substantially charge-neutral system is obtained, and the stock being formed into a sheet. The filler consists of a mixture of talc and soapstone.
IPC 1-7
IPC 8 full level
C01B 33/22 (2006.01); D21H 13/36 (2006.01); D21H 17/68 (2006.01); D21H 23/10 (2006.01); D21H 13/12 (2006.01); D21H 13/16 (2006.01); D21H 13/40 (2006.01); D21H 17/42 (2006.01); D21H 17/44 (2006.01)
CPC (source: EP)
D21H 13/36 (2013.01); D21H 23/10 (2013.01); D21H 13/12 (2013.01); D21H 13/16 (2013.01); D21H 13/40 (2013.01); D21H 17/42 (2013.01); D21H 17/44 (2013.01); D21H 17/68 (2013.01)
Citation (search report)
- GB 1597369 A 19810909 - HOLBEK KJELD APS
- EP 0003214 A1 19790808 - GAF CORP [US]
- GB 2031475 A 19800423 - DALLE & LECOMTE PAPETERIES
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0330635 A1 19890830; EP 0330635 B1 19931013; AT E95860 T1 19931015; DE 68909810 D1 19931118; DE 68909810 T2 19940519; FI 890861 A0 19890223; FI 890861 A 19890827; SE 466110 B 19911216; SE 8800661 D0 19880226; SE 8800661 L 19890827
DOCDB simple family (application)
EP 89850055 A 19890220; AT 89850055 T 19890220; DE 68909810 T 19890220; FI 890861 A 19890223; SE 8800661 A 19880226