(19)
(11) EP 0 291 209 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.02.1990 Bulletin 1990/06

(43) Date of publication A2:
17.11.1988 Bulletin 1988/46

(21) Application number: 88303924.0

(22) Date of filing: 29.04.1988
(51) International Patent Classification (IPC)4: B01F 13/06, B01F 15/02
(84) Designated Contracting States:
AT BE CH DE ES FR GB IT LI NL SE

(30) Priority: 13.05.1987 GB 8711281

(71) Applicant: NETZSCH MASTERMIX LIMITED
Walsall West Midlands WS9 8UG (GB)

(72) Inventor:
  • English, Robert William
    Lichfield Staffordshire WS14 9LN (GB)

(74) Representative: Hands, Horace Geoffrey et al
LEWIS W. GOOLD & CO. Whitehall Chambers 23, Colmore Row
Birmingham B3 2BL
Birmingham B3 2BL (GB)


(56) References cited: : 
   
       


    (54) Mixing and dispersing apparatus


    (57) Mixing and dispersing apparatus for use for example in the manufacture of ink or paint has the mixing chamber (30) connected to a source of supply (10) of powder to be incorporated into a solvent with a connection opening (16) through the base of the mixing chamber, the mixing chamber being sealed and a vacuum connection (54) being provided at the top. This allows the solids to be "sucked in" below the liquid surface when they are wetted immediately which leads to very rapid incorporation and smooth dispersions.







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