Long fiber injection molding
Abstract
An improved method for obtaining high fiber volume fraction, long fiber injection molded articles is provided. According to one embodiment, the method includes forming an injection molding feedstock by cutting pre-impregnated fiber-reinforced tape into platelets. The platelets can be coated with a thin layer of polymer to allow sliding of the platelets with respect to each other at the early stages of plastication, rather than forcing relative motion of fibers with respect to each other. The method can further include the dispersion of material only in the final stages of the injection molding screw to promote gentle motion of the feedstock at the earlier stages of the plastication process. The method allows improvement of mechanical properties of articles manufactured with equipment and techniques that are prevalent in high volume automotive and consumer industries.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1986894
- Patent Number(s):
- 11518073
- Application Number:
- 16/953,425
- Assignee:
- UT-Battelle LLC (Oak Ridge, TN)
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 11/20/2020
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Kunc, Vlastimil, Hassen, Ahmed A., Lindahl, John M., and Kim, Seokpum. Long fiber injection molding. United States: N. p., 2022.
Web.
Kunc, Vlastimil, Hassen, Ahmed A., Lindahl, John M., & Kim, Seokpum. Long fiber injection molding. United States.
Kunc, Vlastimil, Hassen, Ahmed A., Lindahl, John M., and Kim, Seokpum. Tue .
"Long fiber injection molding". United States. https://www.osti.gov/servlets/purl/1986894.
@article{osti_1986894,
title = {Long fiber injection molding},
author = {Kunc, Vlastimil and Hassen, Ahmed A. and Lindahl, John M. and Kim, Seokpum},
abstractNote = {An improved method for obtaining high fiber volume fraction, long fiber injection molded articles is provided. According to one embodiment, the method includes forming an injection molding feedstock by cutting pre-impregnated fiber-reinforced tape into platelets. The platelets can be coated with a thin layer of polymer to allow sliding of the platelets with respect to each other at the early stages of plastication, rather than forcing relative motion of fibers with respect to each other. The method can further include the dispersion of material only in the final stages of the injection molding screw to promote gentle motion of the feedstock at the earlier stages of the plastication process. The method allows improvement of mechanical properties of articles manufactured with equipment and techniques that are prevalent in high volume automotive and consumer industries.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 06 00:00:00 EST 2022},
month = {Tue Dec 06 00:00:00 EST 2022}
}
Works referenced in this record:
Fiber-reinforced molding compounds and methods of forming and using the same
patent, July 2018
- Johnston, VII, Christopher
- US Patent Document 10,011,048