Plastic and nonmetallic article shaping or treating: processes – With twining – plying – braiding – or textile fabric formation
Reexamination Certificate
2005-07-05
2005-07-05
Tentoni, Leo B. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
With twining, plying, braiding, or textile fabric formation
C028S107000, C156S062200, C156S062400, C156S062800, C156S148000, C156S229000, C264S109000, C264S115000, C264S141000, C264S210100, C264S211000, C264S234000, C264S288400, C264S345000
Reexamination Certificate
active
06913720
ABSTRACT:
A non-woven fabric which consists of a blend 75% to 95% by weight of polypropylene based fibers and 5 to 25% by weight of polyester based fibers. The polypropylene fibers are extruded from a melt mixture of about 80 to 99% by weight polypropylene and about 1 to 20% by weight of a suitable heat stabilizer. The polyester based fibers are extruded from a melt mixture of 80% to 100% by weight polyester and 0 to 20% by weight of other stabilizers and/or fire retardants. The flame retardant compounds are added to and blended with the polyester melt prior to the extrusion of the polyester based fibers. Most preferably, the extruded polypropylene and polyester based fibers are staple fibers of between about 2 and 12 denier.
REFERENCES:
patent: 4199644 (1980-04-01), Platt
patent: 5879487 (1999-03-01), Ravella
patent: 5968855 (1999-10-01), Perdelwitz et al.
Raponi Anthony S.
Raponi Lawrence J.
No associations
LandOfFree
Non-woven fabric with flame retardant properties and method... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Non-woven fabric with flame retardant properties and method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-woven fabric with flame retardant properties and method... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3371577