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:
Oct. 04, 2011
Filed:
Jan. 27, 2009
Sujith Nair, Spartanburg, SC (US);
Sasha Stankovich, Spartanburg, SC (US);
Yunzhang Wang, Duncan, SC (US);
Venkatkrishna Raghavendran, Greer, SC (US);
Howell B. Eleazer, Chesnee, SC (US);
Sujith Nair, Spartanburg, SC (US);
Sasha Stankovich, Spartanburg, SC (US);
Yunzhang Wang, Duncan, SC (US);
Venkatkrishna Raghavendran, Greer, SC (US);
Howell B. Eleazer, Chesnee, SC (US);
Milliken & Company, Spartanburg, SC (US);
Abstract
A method of consolidating thermoplastic fibrous layers by providing a plurality of fibers having a core with an exterior surface portion comprising polypropylene and a first layer disposed on at least a portion of the core containing at least 70% alpha-olefin units which is formed into a first fibrous layer. A second fibrous layer is applied to the first fibrous layer which second layer contains a second polymer being a co-polymer having at least 50% alpha-olefin units which is characterized by a number-average molecular weight of about 7,000 to 50,000 g/mol, a viscosity of between about 2,500 and 150,000 cP measured at 170° C. and a melting temperature lower than the melting temperature of the exterior surface of the core. Heat and optionally pressure are applied to the assembly to consolidate the layers.