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US 6,207,276 B1Granted
Sheath-core bicomponent fiber and its applications
AssigneeEms-Chemie AG
InventorsJürgen Spindler, Thomas Weller, Simon Sutter, Gunther Schäch
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Abstract
In a core-shroud bicomponent fiber, which exhibits a core and a shroud at least partially enveloping the core, an elevated abrasion behavior, a low compaction under exposure to temperature and pressure and a high strength of the fibers is achieved by having the shroud consist of 45-98% w/w of a first polyamide having a melting point exceeding 280° C., and 2-20% w/w of a layer silicate.
Claims13
A core-sheath bicomponent fiber, comprising:
- a sheath comprising at least one first polyamide, at least one second polyamide, and at least one layer silicate;
- and
- a core comprising said at least one second polyamide,
- wherein said sheath at least partially envelops said core, said first polyamide has a melting point greater than 280° C. and is present in said sheath in an amount ranging from about 45 to about 98% by weight relative to the total weight of the sheath, and wherein said layer silicate is present in said sheath in an amount ranging from 2 to 20% by weight relative to the total weight of said sheath.
1 more element
Dependencies are inferred from the claim text.