The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 14, 2015
Filed:
Jul. 09, 2010
John A. Cuculo, Raleigh, NC (US);
Richard Kotek, Raleigh, NC (US);
Peng Chen, Zhejiang, CN;
Mehdi Afshari, Raleigh, NC (US);
Ferdinand Lundberg, Garner, NC (US);
John A. Cuculo, Raleigh, NC (US);
Richard Kotek, Raleigh, NC (US);
Peng Chen, Zhejiang, CN;
Mehdi Afshari, Raleigh, NC (US);
Ferdinand Lundberg, Garner, NC (US);
North Carolina State University, Raleigh, NC (US);
Abstract
A melt-spun highly oriented and crystalline thermoplastic filament or fiber having a tenacity of at least about 10 g/d, an elongation less than about 15-%, and a modulus of at least about 130 g/d. A method of making highly oriented and crystalline thermoplastic filaments has been developed that comprises extruding a thermoplastic polymer to form at least one molten filament. The at least one molten filament is introduced into a horizontal liquid isothermal bath. The bath is maintained at a temperature between the glass transition temperature and the melting temperature of the thermoplastic polymer. The bath increases the tension along the molten filament to form at least one partially oriented and low crystalline filament. The partially oriented filament is drawn to form the highly oriented and crystalline filament.