Conjugated fiber, false-twisted processed yarn formed therefrom, method for producing same, and fabric
A technology of composite fibers and fabrics, which is applied in the direction of conjugated synthetic polymer rayon, fiber processing, filament/thread forming, etc., can solve the problems of fabric melting, fabric holes, etc., and achieves good dyeing effect.
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Embodiment 1
[0104] Using polyethylene terephthalate resin with an intrinsic viscosity of 0.64 and high-density polyethylene (manufactured by Nippon Polyethylene Co., Ltd.) with an MFR of 7.0 and a density of 0.964, as a compatibilizer, ethylene-methacrylic acid shrink Glyceride copolymer (Bondfast manufactured by Sumitomo Chemical Co., Ltd., grade: 2C) was mixed in the prescribed amount shown in Table 1, and after dry mixing, it was supplied to a twin-screw kneading extruder at a kneading temperature of 270°C. 1. Melting and kneading was carried out at a screw speed of 250 rpm, cooled and pelletized to obtain the polymer alloy used in the core. On the other hand, as the sheath portion, polyethylene terephthalate having an intrinsic viscosity [η] of 0.64 was used. After each polymer is dried, it is introduced into a composite spinning machine, and the polymer alloy and polyethylene terephthalate are melted at a volume ratio of 2:1 to figure 1 (A) is extruded from the spinning die in such ...
Embodiment 2
[0106] As shown in Table 1, the mass ratio of polyethylene terephthalate and high-density polyethylene in the polymer alloy was changed to 65:35, and the amount of compatibilizer added was changed from 0.3% by mass to 0.5% by mass %, except that the number of filaments was changed, a core-sheath composite fiber of 167dtex / 72f was obtained in the same manner as in Example 1. In addition, under the same conditions as in Example 1, the false twist processing was performed, and as a result, a false twist processed yarn with no defect and good bulkiness was obtained. Using the obtained false-twisted textured yarn, evaluations of rubbing resistance melting property and dyeability were performed. The results are shown in Table 1.
Embodiment 3
[0108] The polyolefin of the polymer alloy was changed to linear low-density polyethylene with MFR5.0 and a density of 0.935, except that the number of filaments was changed, and a core sheath of 167dtex / 72f was obtained in the same manner as in Example 1 type composite fibers. In addition, false twist processing was carried out under the same conditions as in the examples, and as a result, a false twist processed yarn with no defect and good bulkiness was obtained. Using the obtained false-twisted textured yarn, evaluations of rubbing resistance melting property and dyeability were performed. The results are shown in Table 1.
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