Invention Grant
- Patent Title: Nonwoven fabrics and fabric laminates from multiconstituent polyolefin fibers
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Application No.: US09773880Application Date: 2001-01-31
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Publication No.: US06516472B2Publication Date: 2003-02-11
- Inventor: Scott L. Gessner , J. Darrell Gillespie , Jared A. Austin , David D. Newkirk , William Fowells
- Applicant: Scott L. Gessner , J. Darrell Gillespie , Jared A. Austin , David D. Newkirk , William Fowells
- Main IPC: A61F1315
- IPC: A61F1315

Abstract:
Nonwoven fabrics and fabric laminates are formed from continuous filaments or staple fibers of a select blend of specific grades of polyethylene and polypropylene which give improved fabric performance not heretofore recognized or described, such as high abrasion resistance, good tensile properties, excellent softness and the like. Furthermore, these blends have excellent melt spinning and processing properties which permit efficiently producing nonwoven fabrics at high productivity levels. The polymers are present as a lower-melting dominant continuous phase and at least one higher-melting noncontinuous phase dispersed therein. The lower-melting continuous phase forms at least 70 percent by weight of the fiber and comprises a linear low density polyethylene polymer of a melt index of greater than 10 and a density of less than 0.945 g/cc. At least one higher-melting noncontinuous phase comprises a polypropylene polymer with melt flow rate of greater than 20 g/10 min.
Public/Granted literature
- US20010005662A1 Nonwoven fabrics and fabric laminates from multiconstituent polyolefin fibers Public/Granted day:2001-06-28
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