Process of debundling carbon fiber tow and molding compositions containing such fibers
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Jan 4, 2022
Grant Date -
Apr 19, 2018
app pub date -
Dec 19, 2017
filing date -
Dec 19, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A process for debundling a carbon fiber tow into dispersed chopped carbon fibers suitable for usage in molding composition formulations is provided. A carbon fiber tow is fed into a die having fluid flow openings, through which a fluid impinges upon the side of the tow to expand the tow cross sectional area. The expanded cross sectional area tow extends from the die into the path of a conventional fiber chopping apparatus to form chopped carbon fibers, or through contacting tines of a mechanical debundler. Through adjustment of the relative position of fluid flow openings relative to a die bore through which fiber tow passes, the nature of the fluid impinging on the tow, the shape of the bore, in combinations thereof, an improved chopped carbon fiber dispersion is achieved. The chopped carbon fiber obtained is then available to be dispersed in molding composition formulations prior to formulation cure.
First Claim
Other Claims data not available
Family
International Classification(s)
- C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- B29B:PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE ....
- B65H:HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS....
- D02J:FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS....
- B29K:INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, ....
- D01G:PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
- 2017 Application Filing Year
- C08J Class
- 2565 Applications Filed
- 1597 Patents Issued To-Date
- 62.27 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C08J Class
- 0 % this patent is cited more than
- 3 Age
Maintenance Fees
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