Title of Invention | "A METHOD FOR MAKING FIBERS , YARNS AND THE YARN PERSE" |
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Abstract | The invention provides a method for making fibers and yarns having improved dyeability with reactive and disperse dyes, resistance to staining and improved mechanical properties and characteristics. The method includes blending a polyolefin polymer and a fibril-forming polymer to provide a mixture of polyolefin and fibril forming polymers. The mixture is conducted to a hot melt extruder to provide a substantially homogenous molten mixture of polyolefin and fibril forming polymers. The molten mixture is forced through a spinneret having a length to diameter (L/D) ratio ranging from about 3 to about 30 to provide a fiber having a polyolefin matrix and elongate, substantially discontinuous fibrils of the fibril forming polymer dispersed into the polyolefin matrix, whereby the exterior surface of the fibers is substantially devoid of fibrils. Fibers made by the process of the invention are useful as carpet face yarn, in textiles, upholstery and other industrial applications, like chemical industry and others. (FIG. - 1) |
Full Text |
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544-kolnp-2004-granted-abstract.pdf
544-kolnp-2004-granted-claims.pdf
544-kolnp-2004-granted-correspondence.pdf
544-kolnp-2004-granted-description (complete).pdf
544-kolnp-2004-granted-drawings.pdf
544-kolnp-2004-granted-examination report.pdf
544-kolnp-2004-granted-form 1.pdf
544-kolnp-2004-granted-form 18.pdf
544-kolnp-2004-granted-form 2.pdf
544-kolnp-2004-granted-form 3.pdf
544-kolnp-2004-granted-form 5.pdf
544-kolnp-2004-granted-letter patent.pdf
544-kolnp-2004-granted-reply to examination report.pdf
544-kolnp-2004-granted-specification.pdf
Patent Number | 219899 | |||||||||||||||
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Indian Patent Application Number | 00544/KOLNP/2004 | |||||||||||||||
PG Journal Number | 20/2008 | |||||||||||||||
Publication Date | 16-May-2008 | |||||||||||||||
Grant Date | 14-May-2008 | |||||||||||||||
Date of Filing | 26-Apr-2004 | |||||||||||||||
Name of Patentee | AQUAFIL S.P.A. | |||||||||||||||
Applicant Address | VIA DI LINFANO 9, I 38062 ARCO ITALY | |||||||||||||||
Inventors:
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PCT International Classification Number | D01D5/36 | |||||||||||||||
PCT International Application Number | PCT/US01/30444 | |||||||||||||||
PCT International Filing date | 2001-09-28 | |||||||||||||||
PCT Conventions:
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