Screen structure for use in the manufacture of a fiber product

Details Screen structure for use in the manufacture of a fiber product Screen structure for use in the manufacture of a fiber product

2011-06-21

2011-06-21

Hug, Eric (Department: 1741)

Paper making and fiber liberation

Apparatus

Digester

C162S055000, C210S498000, C210S499000

Reexamination Certificate

active

07964065

ABSTRACT:
The present invention relates to a method and apparatus for feeding chemical into a liquid flow. The method and apparatus according to the invention are especially suitable for applications where very small volumes of chemical must be fed in precise amounts in large process liquid flows.

REFERENCES:
patent: 3581903 (1971-06-01), Holz
patent: 4898665 (1990-02-01), Lamort
patent: 5259512 (1993-11-01), Czerwoniak
patent: 5384944 (1995-01-01), Minichshofer
patent: 5607589 (1997-03-01), Frejborg
patent: 6119867 (2000-09-01), Ljokkoi et al.
patent: 7168570 (2007-01-01), Frejborg
patent: WO 87/04474 (1987-06-01), None
patent: WO 93/07334 (1993-04-01), None

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