Calendering machine for testing paper

Details Calendering machine for testing paper Calendering machine for testing paper

1991-10-24

1993-06-01

Gerrity, Stephen F.

Presses

Automatic or material triggered control

Of roll separation or speed

100 99, 100168, 200 6114, B30B 304, D21G 100

Patent

active

052150089

ABSTRACT:
A paper test calendering machine is constructed with a pair of opposed guide rolls about which a web of paper or the like travels. A pair of opening an closing nip rolls are operable to exert pressure on the traveling web. A sensing device is operable to detect a deviation in the smooth web and to then activate an element to relieve the pressure on the web momentarily as the deviation passes.

REFERENCES:
patent: 2691326 (1954-10-01), McArn
patent: 2796480 (1957-06-01), Knorr, Jr.
patent: 3262054 (1966-07-01), Lefkowitz
patent: 3521551 (1970-07-01), Boxmeyer
patent: 4080888 (1978-03-01), Bellis
patent: 4370923 (1983-02-01), Schmidt
patent: 4477981 (1984-10-01), Chan
patent: 4608765 (1986-09-01), Gunderson et al.
patent: 5033373 (1991-07-01), Brendel et al.

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