Method for producing fine fibers and sheet containing fine fibers
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 29, 2018
Issued Date -
N/A
app pub date -
May 17, 2013
filing date -
May 21, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The object of the present invention is to provide a method for producing fine fibers and a sheet containing fine fibers, whereby fiber refinement (fibrillating) of a fiber material is facilitated, freeness and dehydration performance of slurry containing fine fibers obtained after fiber refinement (fibrillating) is favorable and resistance to yellowing of the fine fibers is improved. The present invention provides a method for producing fine fibers, comprising at least the steps of: (a) introducing electrostatic and/or steric functional substituents into a fiber material to obtain substituent-introduced fibers; (b) subjecting the substituent-introduced fibers to mechanical treatment; and (c) eliminating some or all of introduced substituents from the substituent-introduced fine fibers obtained in step (b) to obtain fine fibers from which substituents have been eliminated.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2013 Application Filing Year
- D21H Class
- 351 Applications Filed
- 305 Patents Issued To-Date
- 86.90 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- D21H Class
- 0 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 29, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 29, 2029 |
