Device and method for on-line control of the fibre direction...

Paper making and fiber liberation – Apparatus – Automatic control

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C162S198000, C162S262000, C162S263000, C162S346000, C162SDIG011, C700S128000

Reexamination Certificate

active

07431800

ABSTRACT:
A device and a method for on-line control of the fibre direction of a fire web (8), being manufactured from stock delivered from a headbox (3) through a discharge opening (11) defined by movable lips (9, 10), while using a fibre direction meter (12) located downstream and actuating members (14), which are allonged long the lips for regulation of the discharge opening as a response to individual control signals, each being a function of measured fibre direction values; wherein a control unit (13) receives the measured fibre direction values, calculates the control signals, and transmits these to the actuating members. According to the invention, the control unit identifies an array of fibre direction values, originating from positions in the cross direction of the fibre web which correspond to the positions of the actuating members. The control unit then compares the array of fibre direction values with an array of desired fibre direction values.

REFERENCES:
patent: 5833808 (1998-11-01), Shands et al.
patent: 6322666 (2001-11-01), Luontama et al.
patent: 6799083 (2004-09-01), Chen et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Device and method for on-line control of the fibre direction... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device and method for on-line control of the fibre direction..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device and method for on-line control of the fibre direction... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4018827

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.