Method of making a stratified paper

Details Method of making a stratified paper Method of making a stratified paper

2005-06-07

2005-06-07

Halpern, Mark (Department: 1731)

Paper making and fiber liberation

Processes and products

Running or indefinite length work forming and/or treating...

C162S198000, C162S259000, C162S263000, C209S155000, C209S638000, C209S210000

Reexamination Certificate

active

06902650

ABSTRACT:
The present invention provides a method making stratified paper by redistributing the pulp suspension inside the headbox nozzle using acoustic radiation waves. Acoustic radiation forces fractionate fibers based on fiber radius. The acoustic radiation waves separate the fibers by pushing the coarse and longer fibers to the inner area while fines and smaller fibers remain in the outer area. This has a similar effect of multi-layer stratification headbox, and provides paper with a smoother surface.

REFERENCES:
patent: 3853694 (1974-12-01), Parker
patent: 4141788 (1979-02-01), Justus
patent: 4526653 (1985-07-01), Andersson
patent: 4574624 (1986-03-01), Lehtinent et al.
patent: 5792321 (1998-08-01), Aidun
patent: 5803270 (1998-09-01), Brodeur
patent: 5876564 (1999-03-01), Aidun
patent: 5979664 (1999-11-01), Brideur
patent: 6136152 (2000-10-01), Begemann
patent: 0875622 (1998-11-01), None
patent: 1577664 (1980-10-01), None

Affiliated with

Also associated with

Rating

Method of making a stratified paper does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of making a stratified paper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making a stratified paper will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3490136