Abstract: A nonwoven fabric, including fibers, in which the fibers have an elongational viscosity, as measured under conditions at an elongational strain rate of 2.5×102 (1/s) and a temperature of 160° C., of from 430 Pa·s to 1200 Pa·s, and a ratio of the elongational viscosity (Pa·s) to a shear viscosity (Pa·s) of the fiber, as measured under conditions at a shear strain rate of 2.5×102 (1/s) and a temperature of 160° C., is from 35 to 65.

Abstract: A nonwoven fabric, including fibers, in which the fibers have an elongational viscosity, as measured under conditions at an elongational strain rate of 2.5×102 (1/s) and a temperature of 160° C., of from 430 Pa·s to 1200 Pa·s, and a ratio of the elongational viscosity (Pa·s) to a shear viscosity (Pa·s) of the fiber, as measured under conditions at a shear strain rate of 2.5×102 (1/s) and a temperature of 160° C., is from 35 to 65.

Abstract: An objective is to improve the spinnability and the productivity and increase the tensile strength of a polyester fiber containing polyhydroxyalkanoate. Disclosed is a biodegradable aliphatic polyester fiber containing a polyhydroxyalkanoate, a nucleating agent, and a lubricant, wherein the nucleating agent contains pentaerythritol, and the lubricant contains at least one of behenic amide, stearic acid amide, erucamide, oleic amide, and a combination thereof.

Abstract: A system (10) for evaluating a movement of a subject comprises: detection means (111, 112) for detecting a myoelectric signal indicating an activity of a muscle when a subject performs a movement intended to be a predetermined movement comprising a jaw movement, a tongue movement, or a throat movement; processing means (221) for outputting a processed myoelectric signal by applying predetermined processing on the detected myoelectric signal; and determination means (222) for determining a motion level in the predetermined movement of the subject, based on a pattern contained in the processed myoelectric signal.

Abstract: An objective is to improve the spinnability and the productivity and increase the tensile strength of a polyester fiber containing polyhydroxyalkanoate. Disclosed is a biodegradable aliphatic polyester fiber containing a polyhydroxyalkanoate, a nucleating agent, and a lubricant, wherein the nucleating agent contains pentaerythritol, and the lubricant contains at least one of behenic amide, stearic acid amide, erucamide, oleic amide, and a combination thereof.

Abstract: An object of the present invention is to improve spinnability, productivity, and tensile strength of a polyester fiber containing poly(3-hydroxybutyrate-co-3-hydroxyhexanoate). By spinning the polyester resin containing the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) at a high spinning velocity, the spinnability, productivity, and tensile strength of the polyester fiber can be improved.

Abstract: An object of the present invention is to improve spinnability, productivity, and tensile strength of a polyester fiber containing poly(3-hydroxybutyrate-co-3-hydroxyhexanoate). By spinning the polyester resin containing the poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) at a high spinning velocity, the spinnability, productivity, and tensile strength of the polyester fiber can be improved.

Abstract: A heat fusible conjugate fiber produced by high-speed melt spinning is disclosed. The conjugate fiber is composed of a first resin component having an orientation index of 40% or higher and a second resin component having a lower melting or softening point than the melting point of the first resin component and an orientation index of 25% or lower. The second resin component is present on at least part of the surface of the fiber in a lengthwise continuous configuration. The conjugate fiber preferably has a heat shrinkage of 0.5% or less at a temperature higher than the melting or softening point of the second resin component by 10° C.

Abstract: An object of the present invention is to provide a high-strength polyester fiber suitable for industrial materials, in particular, for a tire cord. The high-strength polyester fiber of the present invention is a polyester high-strength fiber comprising a polyester resin and a polycarboxylic acid-based amide compound, wherein the polyester fiber has a strength of 8.8 cN/dtex or more.

Abstract: A heat fusible conjugate fiber produced by high-speed melt spinning is disclosed. The conjugate fiber is composed of a first resin component having an orientation index of 40% or higher and a second resin component having a lower melting or softening point than the melting point of the first resin component and an orientation index of 25% or lower. The second resin component is present on at least part of the surface of the fiber in a lengthwise continuous configuration. The conjugate fiber preferably has a heat shrinkage of 0.5% or less at a temperature higher than the melting or softening point of the second resin component by 10° C.

Abstract: Polyoxymethylene fiber having a high strength and a high modulus of elasticity is provided. Polyoxymethylene fiber comprising polyoxymethylene copolymer having a half-crystallization time of at least 30 sec, when the polyoxymethylene copolymer is cooled from a melted state at 200° C. to 150° C. at a cooling speed of 80° C./min and maintained constantly at the temperature of 150° C.

Abstract: Polyoxymethylene fiber having a high strength and a high modulus of elasticity is provided. Polyoxymethylene fiber comprising polyoxymethylene copolymer having a half-crystallization time of at least 30 sec, when the polyoxymethylene copolymer is cooled from a melted state at 200° C. to 150° C. at a cooling speed of 80° C./min and maintained constantly at the temperature of 150° C.

Abstract: A grip member has a grip proper (1) made of a shape-memory resin in the shape of a bar, a connecting pin (4) disposed in one terminal part of the grip proper, a forked part (3) formed integrally in the other terminal side of the grip proper, and an annular part (2) formed integrally slightly toward one end of the grip proper (1) and adapted for enabling the forked part (3) to twine thereon. The grip member is enabled to cope easily with a delicate change in the gripping condition by heating the grip proper (1) and the vicinity thereof to a temperature surpassing the glass transition point of the shape-memory resin thereby endowing the shape-memory rubber with a rubbery state, causing the forked part (3) to twine itself around the annular part (2) in such a manner as to impart the shape of a loop to the grip proper.

Abstract: A method of manufacturing fibers with optical function includes spinning a thermoplastic polymer by a spinneret having an opening with first slits arranged parallel to each other and a second slit arranged perpendicular thereto, the spinneret being formed to satisfy a predetermined relation between the length of the first slits and the width of the second slit.

Abstract: A process for preparing highly oriented undrawn core-sheath type conjugated polyester fibers including the step of spinning a polyester as the sheath polymer and a polymer having a larger gradient of elongational viscosity with the temperature than that of the sheath polymer as a core polymer at a spinning speed of about 4000 to 12000 m/min.

Abstract: A spinneret for manufacturing modified cross-section fibers with optical function includes tubes arranged to a spinneret for spinning an island portion, and a partition device for enclosing the tubes for leading a melt polymer. The spinneret and the partition device cooperating with each other to define a predetermined space.

Abstract: A spinneret for manufacturing modified cross-section fibers with optical function includes a middle spinneret for spinning an island portion, which has a base and an opening for extruding a melt polymer for forming an island portion. A partition device is mounted to the middle spinneret to partition the opening thereof, the partition device having an opening communicating with the opening of the middle spinneret which protrudes-from the base thereof.

Abstract: A highly oriented undrawn polyester fiber which is crystalline such that the fiber is capable of exhibiting a diffraction peak observable in a wide angle X-ray diffraction image of the fiber and has a birefringence of 0.015 to 0.05.A process for preparing highly oriented undrawn core-sheath type conjugated polyester fibers including the step of spinning a polyester as the sheath polymer and a polymer having the larger gradient of elongational viscosity with the temperature than that of the sheath polymer at a spinning speed of about 4000 to 12000 m/min.A textured yarn made of said highly oriented undrawn polyester fibers and a process for preparing the textured yarn.