Basf Corporation

Honeywell International Inc.

Basf Corproation

Donald E Wright

Albert R Moorhead

Robert H Blackwell

William C Flynn, Iii

Andrew M Coons, Iii

Melvin R Thompson

Willis M King

Leroy Boseman

Myles W Sterling

Andrew E Modin

Brad A Coxon

Fibers having a reduced amount of glare are disclosed. Products made therefrom the fibers are also disclosed. Methods of making the fibers and products are further disclosed.

Fibers having improved dullness and products containing the same

A composite yarn formed of at least two different individual polymeric fibers may be spun by directing at least two streams of different polymer melts (e.g., polymer melts of different colors and/or characteristics) to a spin pack such that one of the streams has a greater volumetric throughput as compared to the volumetric throughput of the other stream. The polymer streams are each distributed within the spin pack among individual filtration chambers so that the filtration chambers receive substantially the same volumetric throughput allotment of the polymer melt streams. In such a manner, the polymer melt streams are distributed among the filtration chambers in substantially equal throughput allotments even though the total throughput of the melt streams of each of the different polymers may be unequal. The filtered polymer melt streams may then be directed through fiber-forming orifices of a spinneret plate to form the composite yarn.

Spin pack for spinning multiple component fiber yarns

A spin pot for spinning synthetic polymer fibers has a polymer filter, a spinneret downstream of the polymer filter, and an electroformed perforated screen positioned between the polymer filter and the spinneret. The screen is most preferably electroformed nickel and includes an annular non-perforated region which bounds a perforated central region. The electroformed perforations prevent debris that may become dislodged from the filter unit from blocking the spinneret orifices thereby creating undesired 'slow-holes'.

Device and method to prevent spinneret hole contamination

Individual differently colored or colorable feed filament ends are withdrawn from respective creel-mounted packages and passed through a separation guide. The separation guide serves to 'normalize' the filament end-to-end positions and tensions. That is, the separation guide will cause the individual feed ends to be in specific predetermined positions relative to the other feed ends regardless of the position of the package on the creel. In addition, the separation guide will effectively cause a short length of each feed end to be parallel to, and separated by a substantially uniform distance from, corresponding lengths of the other feed ends. This parallel alignment of individual end lengths and the substantially uniform filament end-to-end positioning thereby imparts substantially uniform tensions on the feed ends while substantially maintaining their respective positions in the combined yarn product relative to one another. The position- and tension-normalized feed ends are thereafter immediately passed from the separation guide to an interlacer. The interlacer serves to positionally lock the combined feed filaments to one another so that substantially no filament end migration will ensue as the combined yarn is further processed (e.g., during downstream draw-texturing operations).

Methods and systems for forming multi-filament yarns having improved

Method for spinning multiple component fiber yarns

Growing community of inventors

Anderson, SC, United States of America

Donald E Wright