CN-121992545-A - Aramid fiber and viscose fiber core-spun and wrapped AB double-filament composite yarn and manufacturing process

CN121992545ACN 121992545 ACN121992545 ACN 121992545ACN-121992545-A

Abstract

An AB double-filament composite yarn wrapped by aramid fiber and viscose fiber is prepared through mixing aramid fiber and viscose fiber to obtain sliver, mixing, preparing sliver, feeding the sliver to ring spinning frame, drawing, introducing core yarn and nylon, and features high content of aramid fiber (20-40 wt.%), viscose (10-30 wt.%), terylene (20-30 wt.%) and nylon (20-30 wt.%). The invention successfully produces the AB double-filament composite yarn wrapped by aramid fiber and viscose fiber through the process steps of raw material opening, carding, straightening, combining, drafting and core wrapping, wherein the AB double-filament composite yarn has high strength, less hairiness and compact yarn body, and the fabric is used as a fire-fighting, fire-retarding and flame-retarding tool, has the characteristics of high temperature resistance, fire resistance, high strength and wear resistance, and enriches the fire-fighting, fire-retarding textile market.

Inventors

YAO ZHEN
LIU JIANNONG
LIU SHA
PENG ZHILONG

Assignees

际华三五四二纺织有限公司

Dates

Publication Date: 20260508
Application Date: 20241102

Claims (4)

1. The composite yarn is characterized in that the composite yarn is prepared by mixing aramid fiber and viscose fiber to prepare sliver, mixing the sliver and the sliver, feeding the sliver into a ring spinning frame for drafting, and simultaneously introducing core yarn polyester filaments and winding nylon filaments to prepare the composite yarn; The aramid fiber content in the aramid fiber-spun and wrapped AB double-filament composite yarn is 20% -40% of the total weight of the blended yarn, the viscose fiber content is 10% -30% of the total weight of the blended yarn, the A polyester filament yarn is 20% -30% of the total weight of the blended yarn, and the B nylon filament yarn is 20% -30% of the total weight of the blended yarn; the polyester filaments A are 30D-100D, and the nylon filaments B are 30D-100D.
2. The manufacturing process of the aramid fiber and viscose fiber core-spun and wrapped AB double-filament composite yarn according to claim 1, comprising the following steps: ① . The preparation method comprises the steps of pretreating aramid fiber raw materials, namely opening the spinnable aramid fiber raw materials, spraying a mixed solvent formed by combining FK-305 antistatic agent accounting for 4.0% of the total weight of the raw materials, spinning oiling agent CP accounting for 4.0% of the total weight of the raw materials, cohesion agent PS accounting for 0.2% of the total weight of the raw materials and warm water accounting for 6.0% of the total weight of the raw materials, and sealing and placing a sealing film for 24 hours for health maintenance, so that the specific resistance of the upper aramid fiber raw materials is below 10 6 Ω & cm, and conditioning for 6% -10%; ② . The blowing process comprises the steps of mixing pretreated aramid fibers and viscose fibers in a blowing upper tank to form a certain weight of coil, wherein the weight of the coil is 330g/m, the rotating speed of a selected carding beater is 460rpm, the rotating speed of a comprehensive beater is 820rpm, and the rotating speed of a rolling roller is 12.2rpm; ③ . Carding the aramid fiber and the viscose fiber on an A186D carding machine to prepare carded raw cotton strips, wherein the raw cotton strips have a ration of 17.0g/5m, the total draft multiple of 94 times, tin Lin Zhuaisu is 360rpm, the rotating speed of a licker-in is 560rpm, the card clothing of a cylinder is AC2520-1660, the card clothing of the licker-in is AT5010-8030, the linear speed of a cover plate is 94mm/min, the height of a dust removing knife is parallel and level with a frame, and the angle is 90 degrees; ④ . Drawing process, namely merging two paths on RD221C type auto-leveling drawing frame, adopting a positive drawing process, merging the first paths into 6 paths, quantitatively determining 17.5g/5M, and 5.83 times of total drawing, wherein the back zone drawing time is 1.7 times, the front tension drawing time is 1.02 times, the parallel straightening degree of finished fibers is 57mm multiplied by 60mm, and the roller holding distance is 300M/min; 8 final drawing steps are adopted, the quantitative amount is 17.0g/5m, the total draft multiple is 8.24, the back zone draft multiple is 1.3 times, the front tension draft multiple is 1.01 times, the uneven rate of long segments is controlled, the holding distance of rollers is 54mm multiplied by 60mm, and the linear speed of a press roller is 300m/min; ⑤ . The roving process comprises the steps of quantifying roving at 5.0g/10m, drafting multiple at 6.8 times, drafting multiple at a rear zone at 1.30, twisting coefficient at 74, roller gauge at 23mm multiplied by 28mm multiplied by 30mm, spindle speed at 600 revolutions/min, selecting a 16-tooth false twister for increasing friction force, and keeping a channel smooth; ⑥ . The spinning process comprises the steps of adding a numerical control double-yarn core-spun yarn device, feeding aramid fiber and viscose blended roving into a horn mouth in a back spinning zone, respectively feeding AB double yarns into a jaw, wherein A polyester filaments are positioned in the middle of roving strands to form core yarns, B nylon filaments are positioned on the left side of the A polyester filaments to form winding angles with the winding yarns by using a yarn guiding wheel with a center distance of 4mm, B nylon filaments are wrapped on the outer surface of a yarn forming body to bind short fiber hairiness, the yarn twisting coefficient is 260-300, the drafting multiple in a back zone is 1.25 times, the distance block is 4.0, the W321 corrugated cross section steel wire ring is used for increasing heat dissipation, the weight of the steel wire ring is one grade more than that of conventional yarns, the schema is PG1/2-38 series, the spindle speed is 8000rpm, and the filament drafting multiple is 1.02 times; ⑦ . The winding process comprises the steps of setting a cotton knot at 320% in an automatic winder speed of 1400m/min, setting a long thick knot at 140% -1.8 in an electric cleaning process, cutting off a bubble yarn, producing a harmful short thick knot with attached fly and poor drafting, cutting off a core yarn and a coreless yarn in a fineness of 18% in length of 32cm, and ensuring good hollow twisting knots without dislocation and poor twisting strength.
3. The aramid fiber and viscose fiber core-spun and AB double-filament composite yarn and the manufacturing process thereof are characterized in that the aramid fiber and viscose fiber core-spun and AB double-filament composite yarn is 19.7Tex, and the specific resistance of the aramid fiber raw material is 10 8 ohm cm.
4. The aramid fiber and viscose fiber core-spun and wrapped AB double-filament composite yarn and the manufacturing process thereof according to claim 2 are characterized in that the equipment configuration and the process flow of each process are as follows:

Description

Aramid fiber and viscose fiber core-spun and wrapped AB double-filament composite yarn and manufacturing process Technical Field The invention relates to the technical field of textile production, in particular to an AB double-filament composite yarn wrapped by aramid fiber and viscose fiber and a manufacturing process thereof. Background With the development of textile technology, various applications of fiber materials, the comprehensive spinning of fibers with different functions, and the spinning of yarns with diversified functions are the development direction of the current textile field. The core-spun wrapped yarn in the current market is spun by the same filaments through a core-spun wrapped structure, and the strength is higher than that of the monofilament core-spun yarn, but the outer cladding fiber has single function, does not have diversified functions, and cannot meet the diversified requirements of the textile market. As one of the synthetic fibers, the aramid fiber generally refers to aromatic polyamide fiber, and because the aramid molecular bundles in the fiber structure are arranged in a highly ordered manner along the fiber axis, the fiber strength and the elastic modulus are higher, the aramid fiber is not easy to be organically fused with other fibers in the spinning process, and the high-strength wear-resistant, flame-retardant and fireproof functions cannot be effectively applied to the market. The invention aims to explore the preparation of the composite yarn with the wrapping core wrapped with the AB double-filament by blending the aramid fiber and the viscose fiber so as to enrich the fire-fighting textile market. Disclosure of Invention In order to overcome the defects of the prior art, the invention aims to provide the aramid fiber and viscose fiber core-spun AB double-filament composite yarn and the manufacturing process thereof, so as to solve the structural problem of core yarn spinning of different fiber characteristics of the core-spun yarn, avoid the defects of single performance and limited functions of the traditional core-spun yarn, and realize the normal production of the frock yarn with the functions of high temperature resistance, fire resistance, high strength and wear resistance. In order to achieve the aim, the aramid fiber and viscose fiber core-spun and wrapped AB double-filament composite yarn and the manufacturing process thereof are provided, wherein the aramid fiber and viscose fiber core-spun and wrapped AB double-filament composite yarn is prepared by mixing aramid fiber and viscose fiber to prepare sliver, mixing and then preparing roving strips, feeding the roving strips into a ring spinning frame for drafting, and simultaneously introducing core-spun polyester filaments and wound nylon filaments to prepare the AB double-filament core-spun and wrapped composite yarn; The aramid fiber content in the aramid fiber-spun and wrapped AB double-filament composite yarn is 20% -40% of the total weight of the blended yarn, the viscose fiber content is 10% -30% of the total weight of the blended yarn, the A polyester filament yarn is 20% -30% of the total weight of the blended yarn, and the B nylon filament yarn is 20% -30% of the total weight of the blended yarn; the polyester filaments A are 30D-100D, and the nylon filaments B are 30D-100D. Further, the manufacturing process of the AB double-filament composite yarn wrapped by the aramid fiber and viscose fiber core comprises the following steps: ① . The preparation method comprises the steps of pretreating aramid fiber raw materials, namely opening the spinnable aramid fiber raw materials, spraying a mixed solvent formed by combining FK-305 antistatic agent accounting for 4.0% of the total weight of the raw materials, spinning oiling agent CP accounting for 4.0% of the total weight of the raw materials, cohesion agent PS accounting for 0.2% of the total weight of the raw materials and warm water accounting for 6.0% of the total weight of the raw materials, and sealing and placing a sealing film for 24 hours for health maintenance, so that the specific resistance of the upper aramid fiber raw materials is lower than 106 Ω cm, and conditioning by 6% -10%; ② . The blowing process comprises the steps of mixing pretreated aramid fibers and viscose fibers in a blowing upper tank to form a certain weight of coil, wherein the weight of the coil is 330g/m, the rotating speed of a selected carding beater is 460rpm, the rotating speed of a comprehensive beater is 820rpm, and the rotating speed of a rolling roller is 12.2rpm; ③ . Carding the aramid fiber and the viscose fiber on an A186D carding machine to prepare carded raw cotton strips, wherein the raw cotton strips have a ration of 17.0g/5m, the total draft multiple of 94 times, tin Lin Zhuaisu is 360rpm, the rotating speed of a licker-in is 560rpm, the card clothing of a cylinder is AC2520-1660, the card clothing of the licker-in is AT5010-8030, the linear speed of a