Abstract: A woven fabric includes a plurality of interlaced multifilament yarns, wherein at least one of the multifilament yarns includes first and second filaments having a pentagram cross-section, and the first and second filaments have a degree of modification between 1.4 and 2.6. The woven fabric has at least one surface calendered so that at least part of the multifilament yarns are compressed and the first and second filaments interlock with one another to retain low air permeability after repeated washing.

Abstract: A woven fabric includes a plurality of interlaced multifilament yarns, wherein at least one of the multifilament yarns includes first and second filaments having a pentagram cross-section, and the first and second filaments have a degree of modification between 1.4 and 2.6. The woven fabric has at least one surface calendered so that at least part of the multifilament yarns are compressed and the first and second filaments interlock with one another to retain low air permeability after repeated washing.

Abstract: A melt spinning apparatus that prevents filaments passing through an unstable area from contacting one another. In a melt spinning method for thinning and solidifying each molten filament F ejected from a plurality of nozzles to obtain a yarn Y comprising a plurality of filaments F, each filament F being thinned is charged to the same polarity, and when the plurality of filaments F are assembled together, charge is eliminated from them. In a melt spinning apparatus 11 having an unstable area A generated necessarily during the rapid thinning of each filament F between a spinning pack 2a of an ejecting device 2 located above and a filament converging portion B located below, a charging device 12 is provided that charges each filament F to the same polarity between the spinning pack 2a and an inlet Aa of the unstable area A; also, a static eliminating device 13 is provided that eliminates charge from each filament F between an outlet Ab of the unstable area A and the filament converging portion B.