Long fiber injection molding
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.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-00OR22725
- Assignee:
- UT-Battelle LLC (Oak Ridge, TN)
- Patent Number(s):
- 11,518,073
- Application Number:
- 16/953,425
- OSTI ID:
- 1986894
- Resource Relation:
- Patent File Date: 11/20/2020
- Country of Publication:
- United States
- Language:
- English
Fiber-reinforced molding compounds and methods of forming and using the same
|
patent | July 2018 |
Similar Records
An Integrated Approach Linking Process to Structural Modeling With Microstructural Characterization for Injections-Molded Long-Fiber Thermoplastics
An Elastic-Plastic and Strength Prediction Model for Injection-Molded Long-Fiber Thermoplastics