Comparison of filament-core spun yarns produced by new and conventional methods

• Published in: Textile research journal 1992-02, Vol.62 (2), p.67-73
• Main Authors: Sawhney, A.P.S, Ruppenicker, G.F, Kimmel, L.B, Robert, K.Q
• Format: Article
• Language: English
• Subjects: cotton; methodology; nylon; polyesters; spinning; yarns
• ISSN: 0040-5175; 1746-7748
• DOI: 10.1177/004051759206200202

In recent years, we have been reporting our research on composite yarns of mostly cotton content produced on a modified ring spinning system. Recently, we reported an improved method of producing an all staple-core spun yarn, and we have applied the same method to filament-core spinning, obtaining a yarn of greatly improved quality. The new filament-core yarn has almost total core coverage, does not strip, and is about 10% stronger (probably due to its improved yarn structure) than a conventional filament-core yarn. This paper briefly describes the new and conventional core spinning methods and evaluates nylon filament-core/cotton-wrap yarns produced with them. There is also a comparison of the cover factor, strip resistance, and microscopic cross sections of a few other core yarns (with Kevlar, fiberglass, and polyester cores). A significant improvement in the cover factor of the new yarn suggests that it may be very useful for sewing threads; ropes; twines; cables; special military, industrial, and surgical fabrics; and other textiles in which the high strength, durability, and a 100% cotton surface (for ease of finishing or coating) are important.