Weft knitting technology

Computerised flat weft knitting is the most versatile technology in 3D knitting. The key elements that are essential to the development of 3D knitted textiles include the needle, needle bed, racking mechanism, carriage and cams, yam carriers, take-down... 

DOSs are unique multiply fabrics (Au, 2011). In these sfructures, straight ends of absolutely parallel and noncrimped yams are inserted into the stmctures at different angles (Raz, 1988). With these techniques, fabric properties can be engineered to enhance the in-plane properties only in the required orientations, thereby offering the produced fabric the ideal combination of excellent mechanical properties and cost-effective production. DOSs normally include mono-, bi-, tri-, and multiaxial stmctures, which can be produced with weft knitting or warp knitting technologies. 

Flat Knit Fabric n (1) A fabric made on a flat-knitting machine, as distinguished from tubular fabrics made on a circular-knitting machine. While tricot and mil-anese warp-knit fabrics (non-run) are knit in flat form, the trade uses the term flat-knit fabric to refer to weft-knits fabrics made on a flat machine, rather than warp-knit fabrics. (2) A term used in the underwear trade for plain stitch fabrics made on a circular-knitting machine. These fabrics have a flat surface and are often called flat-knit fabrics to differentiate them from ribbed-knit or Swiss rib fabrics. In this case, the term refers to the texture, not the type of machine on which the fabric was knit (Kadolph SJJ, Langford AL (2001) Textiles. Pearson Education, New York Vincenti R (ed) (1994) Elsevier s textile dictionary. Elsevier Science and Technology Books, New York). 

Spencer, D. J. (2001), Knitting Technology A Comprehensive Handbook and Practical Guide to Modern Day Principles and Practices, CRC Press, Boca Raton, FL Sun, B. Hu, H., Gu, B. (2010), Responses of 3D biaxial spacer weft-knitted composite circular plate under impact loading, Part I unit-cell and elasto-plastic constitutive model. The Journal of the Textile Institute, 101 (1) pp. 28-34... 

Unidirectional NCFs can also be produced with this technology. Then, only weft threads are inserted and connected via warp knitting. 

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