Multi-layered fiber

Details Multi-layered fiber Multi-layered fiber

2011-06-14

2011-06-14

Piziali, Andrew T (Department: 1798)

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

C428S364000, C428S397000, C428S399000, C428S400000

Reexamination Certificate

active

07960024

ABSTRACT:
A multi-layered fiber including a core, a first layer, and a second layer. The core has an exterior surface portion containing polypropylene. The first layer is disposed on at least a portion of the core and contains a first polymer. The first polymer contains a polymer having at least 70% α-olefin units and is characterized by a melting temperature lower than the melting temperature of the exterior surface portion of the core. The second layer is disposed on at least a portion of the first layer and contains a second polymer. The second polymer contains a co-polymer having at least 50% α-olefin units and is characterized by a number-average molecular weight of about 7,000 g/mol 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 portion of the core. The viscosity of the second polymer is not greater than about 10 percent of the viscosity of the first polymer measured at 170° C. Methods of forming the multi-layered fiber are also disclosed.

REFERENCES:
patent: 3338778 (1967-08-01), Hutchins et al.
patent: 3836607 (1974-09-01), Finkman et al.
patent: 3900534 (1975-08-01), Schard
patent: 4075290 (1978-02-01), Denzel et al.
patent: 4178272 (1979-12-01), Meyer, Jr. et al.
patent: 4184993 (1980-01-01), Singh et al.
patent: 4252851 (1981-02-01), Lansbury et al.
patent: 4309487 (1982-01-01), Holmes
patent: 4403012 (1983-09-01), Harpell et al.
patent: 4650710 (1987-03-01), Harpell et al.
patent: 4962248 (1990-10-01), Winter et al.
patent: 5023388 (1991-06-01), Liiker
patent: 5036140 (1991-07-01), Hwo
patent: 5126198 (1992-06-01), Schinkel et al.
patent: 5484824 (1996-01-01), Abe et al.
patent: 5530065 (1996-06-01), Farley et al.
patent: 5674600 (1997-10-01), Hargarter et al.
patent: 5811186 (1998-09-01), Martin et al.
patent: 6045923 (2000-04-01), Kok et al.
patent: 6156679 (2000-12-01), Takaoka et al.
patent: 6268062 (2001-07-01), Demeuse
patent: 6287700 (2001-09-01), Kong et al.
patent: 6458469 (2002-10-01), DeLisio et al.
patent: 6599639 (2003-07-01), Dayrit et al.
patent: 6620897 (2003-09-01), Smillie
patent: 6638637 (2003-10-01), Hager et al.
patent: 6689517 (2004-02-01), Kaminsky et al.
patent: 6777502 (2004-08-01), Ho et al.
patent: 6800692 (2004-10-01), Farley et al.
patent: 6824863 (2004-11-01), Kitayama et al.
patent: 6887582 (2005-05-01), Lee et al.
patent: 6916882 (2005-07-01), Brant
patent: 6939919 (2005-09-01), Tau et al.
patent: 6960392 (2005-11-01), Le Du et al.
patent: 6979495 (2005-12-01), Keung et al.
patent: 7147930 (2006-12-01), Schell et al.
patent: 7217463 (2007-05-01), Henderson
patent: 7226880 (2007-06-01), Potnis
patent: 7262251 (2007-08-01), Kanderski et al.
patent: 7294383 (2007-11-01), Callaway et al.
patent: 7294384 (2007-11-01), Eleazer et al.
patent: 7300691 (2007-11-01), Callaway et al.
patent: 7318961 (2008-01-01), Loos et al.
patent: 7328547 (2008-02-01), Mehta et al.
patent: 7390575 (2008-06-01), Tayano et al.
patent: 2004/0112533 (2004-06-01), Va den Bossche et al.
patent: 2004/0242103 (2004-12-01), Loos et al.
patent: 2005/0288412 (2005-12-01), Hohner et al.
patent: 2006/0074171 (2006-04-01), Bach et al.
patent: 2006/0147685 (2006-07-01), Potnis et al.
patent: 2006/0151104 (2006-07-01), Jacobs et al.
patent: 2006/0183860 (2006-08-01), Mehta et al.
patent: 2006/0204736 (2006-09-01), Carolis
patent: 2006/0235134 (2006-10-01), Bach et al.
patent: 2007/0071960 (2007-03-01), Eleazer et al.
patent: 2007/0135008 (2007-06-01), Hall et al.
patent: 2008/0124513 (2008-05-01), Eleazer et al.
patent: 0 264 112 (1988-04-01), None
patent: 1 584 644 (2005-10-01), None
patent: 1 584 662 (2005-10-01), None
patent: 1 605 013 (2005-12-01), None
patent: 1 788 056 (2007-05-01), None
patent: WO 93/03093 (1993-02-01), None
patent: WO 98/29586 (1998-07-01), None
patent: WO 03/008190 (2003-01-01), None
patent: WO 2007/011038 (2007-01-01), None
patent: WO 2007/038000 (2007-04-01), None
patent: WO 2007/131958 (2007-11-01), None
patent: WO 2008/040506 (2008-04-01), None
patent: WO 2008/043468 (2008-04-01), None
patent: WO 2008/046535 (2008-04-01), None
U.S. Appl. No. 12/360,542, filed Jan. 27, 2009, Nair et al.
U.S. Appl. No. 12/360,553, filed Jan. 27, 2009, Nair et al.
U.S. Appl. No. 12/360,560, filed Jan. 27, 2009, Nair et al.
U.S. Appl. No. 12/360,576, filed Jan. 27, 2009, Nair et al.
Patent Cooperation Treaty PCT International Search Report. Date of Mailing, Apr. 15, 2010, International Application No. PCT/US2009/006664, International Filing Date, Dec. 21, 2009.

Affiliated with

Also associated with

Rating

Multi-layered fiber does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-layered fiber, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-layered fiber will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2717309