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US 5,208,107 AGranted
Hollow trilobal cross-section filament
AssigneeBASF SE
InventorsLing Yeh, Richard Kotek
Life of this patent
Estimating the term…
Abstract
A multilobal synthetic polymeric filament has a single approximately axially extending central void. The total cross-sectional void area of the filament is between about 3 and about 10 percent void.
Claims4
A trilobal synthetic thermoplastic filament having a single void extending approximately axially central, a total cross-sectional void area between about 3 and about 10 percent void, a modification ratio between about 2 and about 6, and an arm angle between about 7.degree. and about 35.degree..
Dependencies are inferred from the claim text.