Abstract: Disclosed is a tape for polishing the surface of a substrate of a magnetic recording medium, and a thin-fineness filament obtained by dissolving a dissolving component of a dissolution-decomposition type composite yarn consisting of a nylon component and the dissolving component is used as piles of a flocked cloth, warps of a fabric, and webs of a nonwoven fabric. The polishing tape of the present invention can noticeably improve the surface roughness of the polished substrate.

Abstract: A polyurethane elastomer fiber non-woven fabric contains polyurethane elastomer fiber filaments melt-bonded with one another, and has a tensile elongation of 100% or more, a 50% elongation recovery of 75% or more and a tear strength per METSUKE of 5.5 gf or more. The non-woven fabric can be prepared by a method of providing a thermoplastic polyurethane elastomer having Shore hardness A of 92 or more, drying the elastomer to a water content of 150 ppm or less, and melt-spinning and, at the same time, spraying it together with a high speed gas stream so as to deposit and laminate the elastomer into a sheet form. A synthetic leather using the non-woven fabric is also provided. The non-woven fabric has not only an excellent elasticity but also high tear strength.

Abstract: A sheath-core composite conductive fiber having a sheath component made of a fiber-forming polymer containing conductive carbon black, is characterized in that, with respect to an inscribed circle of a core component and an inscribed circle of a sheath component in a cross section of the fiber, a radius (R) of the inscribed circle of the sheath component and a distance (r) between the centers of two inscribed circles satisfy a specific relationship, and a sheath-core composite conductive fiber having: a core component made of a polyester containing ethylene terephthalate as a main component, and a sheath component made of a mixture of a copolyester wherein ethylene terephthalate accounts for 10 to 90 mol % of constituent units thereof and carbon black. The conductive fiber can be used alone or in combination with other fibers in various applications, e.g., special working clothes such as dust-free clothes and interiors such as carpets.

Abstract: The gist of the present invention is an acrylic synthetic fiber comprising 0.5 to 20.0% by weight of a fine powder, which contains a silicic acid metal salt or aluminosilicic acid metal salt having an apparent specific gravity of 0.5 g/cm3 or less and an average particle diameter of 0.5 to 10 &mgr;m as an active component. According to the present invention, a comfort fiber material was realized by providing with three functions required strongly by consumers, for example, deodorizing performance, antibacterial/bacteriostatic performance and water absorption/sweat absorption performance. Consequently, it is made possible to provide consumers with a high quality, safe/sanitary, healthy and comfort life style.

Abstract: The present invention is directed to a stretchable adhesive nonwoven prepared by laminating continuous filaments made of a thermoplastic polyurethane resin, which comprises an aliphatic diisocyanate and/or an aromatic diisocyanate, a polymeric diol and a chain-extending agent and has a hardness (JIS-A hardness) of 65 to 98 degree and a flow initiating temperature within a range from 80 to 150° C., into a sheet, and fusion-bonding the filaments themselves with their own heat at the contact point of the laminated filaments thereby to form fibers, and a laminate containing the same. The adhesive nonwoven fabric of the present invention is rich in flexibility and is excellent in adhesion and air permeability.