Question

what is core yarn?explain​

Answer 1

A yarn in which a base yarn is completely wrapped by a second yarn. Heddels explains Core Spun Yarn. Core spun, or “polycore”, yarn is created by twisting staple fibers around a central filament core, usually made of polyester for extra strength.

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Answer 2

core-spun CNT yarn

A core-spun yarn consisting of a metal filament core and a CNT sheath was constructed for application in two-ply yarn supercapacitors (Zhang et al., 2014a). The core/sheath-structured CNT yarn can be manufactured on a flyer-spinner, as shown schematically in Figure 3.7. The CNTs forming the sheath are drawn from the MWCNT forest as a continuous web. The core material is pulled out from a supply bobbin to merge with the CNT web. The twisting action of the spindle at the right-hand side causes the metal filament and the CNT web to rotate together, resulting in the wrapping of the CNT web around the metal filament to form a core/sheath structured yarn (Figure 3.7). Because of the very large width of the CNT web in relation to the diameter of the metal filament, the core is completely covered by the CNT sheath in the resultant core-spun yarn.

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