摘要:
5n7 This invention relates to a method of manufacturing a filament and a filament assembly formed out of a thermotropic liquid crystal polymer and having a thermal resistance, a high strength and a high elastic modulus, and more particularly to a method of manufacturing a filament and a filament assembly in which thermotropic liquid crystal polymer filament members and some other extrudable polymer are mixed; and a filament assembly. This manufacturing method is characterized by the steps of fusion-extruding a thermotropic liquid crystal polymer from a minute bore-carrying nozzle, maintaining a spun-out filament directly under a spinning nozzle at a high temperature, and taking up the filament at a high drafting rate by a frictional force of a high-speed fluid. From the spinning stage, a filament assembly of a high strength and a high elastic modulus can be formed directly, and the manufacturing cost is low. The filament assembly has high affinity for an adhesion to a matrix and a high uniform dispersibility, so that it is suitably used not only independently but also as a reinforcing fiber.
摘要:
A nonwoven cloth of drawn long fiber of different kinds of polymers, having a strength equal to that of a woven cloth and features including a ductility, a uniformity, good feeling, a bulkiness and a thinness, characterized in that the nonwoven cloth is provided with drawn long fiber webs comprising long fiber filaments formed out of a plurality of kinds of thermoplastic polymers of different properties, the long fiber filaments as a whole being oriented in one direction. The invention also provides a nonwoven cloth of drawn long fiber provided with a first web layer of crimped filaments, and a second web layer of substantially non-crimped, drawn long fiber filaments, and comprising different kinds of polymers of high strength and bulkiness, and a method of manufacturing the same.