Method of controlling bulk in folded webs

Details Method of controlling bulk in folded webs Method of controlling bulk in folded webs

1990-10-26

1991-10-29

Terrell, William E.

Manufacturing container or tube from paper; or other manufacturi

Control means energized in response to activator stimulated...

Responsive to work material, the product or means engaging...

B65H 4500

Patent

active

050612301

ABSTRACT:
A method of controlling stack back pressure in folding apparatus incorporating sensing the bulk of a stack issuing from folding rolls, forming a signal corresponding to the sensed bulk, comparing the signal with a predetermined signal range and changing the size of an embossing nip gap or pressure whenever the signal is outside of the range.

REFERENCES:
patent: 1015580 (1912-01-01), Nichols
patent: 2359417 (1944-10-01), Hand
patent: 3640521 (1972-02-01), Hutley
patent: 3770264 (1973-11-01), Sturman et al.
patent: 4204669 (1980-05-01), Nystrand
patent: 4227683 (1980-10-01), Spangler et al.
patent: 4406648 (1983-09-01), Cavagna et al.
patent: 4504051 (1985-03-01), Bittner et al.
patent: 4824426 (1989-04-01), DuFresne

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