(19)
(11) EP 0 820 859 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.07.1998 Bulletin 1998/27

(43) Date of publication A2:
28.01.1998 Bulletin 1998/05

(21) Application number: 97117739.9

(22) Date of filing: 19.11.1992
(51) International Patent Classification (IPC)6: B30B 9/12, B30B 9/16
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB IT LI NL SE

(30) Priority: 19.11.1991 SE 9103451

(62) Application number of the earlier application in accordance with Art. 76 EPC:
92924093.5 / 0675798

(71) Applicant: Spirac Engineering AB
216 08 Malmö (SE)

(72) Inventor:
  • The designation of the inventor has not yet been filed
     ()

(74) Representative: Magnusson, Gustav 
MAGNUPATENT AB P.O. Box 6207
200 11 Malmö 6
200 11 Malmö 6 (SE)

 
Remarks:
This application was filed on 11-10-1997 as a divisional application to the application mentioned under INID code 62.
 


(54) Apparatus and method for compressing materials


(57) The present invention relates to an apparatus for compacting material in which the apparatus includes a path (10), an infeed device (40) which discharges in an opening (11) disposed in the path, and a spiral (30) rotary about its longitudinal axis and lacking a mechanical shaft. In connection with the discharge opening (12) of the apparatus, baffle means (13) are provided which impede displacement of the material. Between the free end (39) of the spiral and the discharge opening (12) of the apparatus, the path forms a compaction cell (15). The spiral is disposed to at least intermittently abut against the path, in addition to which the spiral and the path form in the region of the opening (11) a feed compartment (35) for supplied material, this compartment directly merging into the compaction cell (15). The path (10) is provided with drainage apertures (14).






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