A process for producing purified polysaccharide fiber of the present invention includes bringing a polysaccharide solution, which is obtained by dissolving a polysaccharide raw material in a liquid containing an ionic liquid, into contact with a solidification liquid containing an ionic liquid, and…
The present invention provides a polyester yarn, wherein a room-temperature strength-elongation index (X 0 ) indicating a ratio (T°/S°) of tensile strength (T°) to tensile elongation (S 0 ) of the polyester yarn, measured at room temperature, and a primary high-humidity strength-elongation index (X…
The present invention relates to a PET tire cord, of which a shrinkage behavior index (SBI) defined by the following Calculation Formula 1 is 0.1 (g/d)/% or more under the conditions of the load of 0.0565 g/d and the temperature of 180°C: Shrinkage behavior index SBI = Shrinkage force g / d /…
The method involves determining flexible resetting force related to continuous deformation at a continuously extruded seal strand (1) transverse to a longitudinal direction of the strand. The resetting force is adjusted to a predetermined range by varying an extrusion cross-section and/or varying…
The method involves extruding a sealing thread as a bent thread and bending the sealing thread after extrusion by plastic deformation and cooling of extruded material. Calibration elements (10) are directly arranged downstream in connection to extrusion of an opening of an extrusion tool (14) with…
Disclosed is a lyocell multi-filament for a tire cord and a method of producing the same. The method includes i) dissolving mixed powder of cellulose and polyvinyl alcohol in a mixed solvent of N-methyl morpholine N-oxide and water to prepare a dope, ii) extruding the dope using a spinning nozzle…