In order to solve the problem of severe twist shrinkage in ring spinning composite yarns of basalt fibers and staple fibers with high modulus differences, this study introduces a new method to improve the structure of yarn formation by stress balance to reduce the residual torque of the yarn and obtain low-torque composite yarns.

Yarn is often ply-twisted in a direction opposite to a single yarn twist to improve evenness, strength, elongation, bulkiness, luster and abrasion resistance, and to reduce twist liveliness, hairiness and variation in strength.

Mar 7, 2017 · Staple fibres give the yarn a better bending resistance, which is particularly important at small deflection radii. The objectives of the project were the development of novel basalt staple fibre yarns and their further processing into technical textile fabrics.

wound on take up device. Basalt twisted yarn is produced by twisting the basalt roving. Continuous basalt filaments are chopped to a specific fiber length in a dry cutting process to get staple fiber. The moisture content of final fiber is less than 1% and with sizing add on it ranges from 1.0% - 2.0%.

One of the yarns is built on basalt filament at different twist levels and cotton is used as a sheath. The results show that aramid, PET, and basalt behave differently during tensile tests. Here, the strength of PET fibers is almost not influenced from the twist level.

Oct 18, 2016 · One of the yarns is built on basalt filament at different twist levels and cotton is used as a sheath. The results show that aramid, PET, and basalt behave differently during tensile tests. Here, the strength of PET fibers is almost not influenced from the twist level.

Basalt fibers are produced from basalt rocks by melting them and converting the melt into fibers. Basalts are rocks of igneous origin. Basalt fibers are classified into 3 types: Basalt superthin fibers (BSTF), for the production of high quality heat- and sound-insulating and fireproof materials.

Nov 1, 2022 · In this paper, we report an inorganic/organic composite fabric weaved by basalt@polyimide yarns (denoted BS@PI yarns) that is skin-friendly and highly fireproof up to 1142 °C, which is much higher than that of commercial Aramid 1313.

combination of staple fibers with higher modulus differences and basalt fibers, the residual torque of the yarn will be better released; then yarn formation performance will be better if localized twist control has been used. Further studies found that both finishing and spinning techniques could reduce residual torque (Tao et al., 1997; Liu

Yarn is often ply-twisted in a direction opposite to a single yarn twist to improve evenness, strength, elongation, bulkiness, luster and abrasion resistance, and to reduce twist liveliness, hairiness and variation in strength.