Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...
Reexamination Certificate
2006-12-05
2006-12-05
Hug, Eric (Department: 1731)
Paper making and fiber liberation
Apparatus
Running or indefinite length product forming and/or treating...
C162S205000, C162S361000, C264S119000, C425S371000, C100S151000
Reexamination Certificate
active
07144481
ABSTRACT:
Endless steel band for belt presses, especially double belt presses, with a thickness between 2 mm to 4 mm, preferably 2.5 mm to 3.5 mm, which is turned around on drums of the belt press, and whose surface has a maximum medium roughness up to RZ 50.5 μm, in which a plurality of depressions are provided starting from the surface of the steel strip and extending into the steel strip, the depressions being substantially evenly distributed and reaching from the surface of the steel strip 200 μm to 600 μm deep into the steel band. Such steel band can be used for the production of plates, preferably wood-based plates, especially chipboards, with elevations.
REFERENCES:
patent: 4557778 (1985-12-01), Held
patent: 4573404 (1986-03-01), Held
patent: 5021102 (1991-06-01), Harreither
patent: 5088398 (1992-02-01), Bielfeldt
patent: 5183551 (1993-02-01), Werthmann
patent: 6436553 (2002-08-01), Stadler et al.
patent: 6908295 (2005-06-01), Thielman et al.
patent: 29 50 795 (1981-06-01), None
Berndorf Band GmbH & Co.
Hug Eric
Jacobson & Holman PLLC
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