Cold drawing is a process, for example used in cable core production. Starting from a 1 cm (0.4 inch) thick Cu wire, slowly this is drawn more and more, and eventually small thin wires of 1 micrometer in diameter can be obtained. General Name, Symbol, Number copper, Cu, 29 Chemical series transition metals Group, Period, Block 11, 4, d Appearance metallic brown Atomic mass 63. ...

Cold drawing is a procedure in manufacturing polymer plastic fibers. It was discovered by Julian Hill in 1930 while trying to make fibers from an early polyester, a precursor to nylon. It is performed after the material has been "spun" into filaments. Here, spinning does not mean twisting fine textile filaments, but rather extrusion of a polymer melt through pores in industrial spinnerets. During this process, the individual polymer chains tend to align because of viscous flow. If subjected to cold drawing afterwards, the fibers align further, increasing their crystallinity,[1] and the material acquires additional tensile strength.[2] Polymer is a generic term used to describe a very long molecule consisting of structural units and repeating units connected by covalent chemical bonds. ... Plastic covers a range of synthetic or semisynthetic polymerization products. ... Fiber or fibre[1] is a class of materials that are continuous filaments or are in discrete elongated pieces, similar to lengths of thread. ... 1930 (MCMXXX) is a common year starting on Wednesday. ... SEM picture of a bend in a high surface area polyester fiber with a seven-lobed cross section Polyester is a category of polymers, or, more specifically condensation polymers, which contain the ester functional group in their main chain. ... Nylon represents a family of synthetic polymers, a thermoplastic material, invented in 1935 by Wallace Carothers at DuPont. ... Cones of yarn for industrial use Spinning is the process of creating yarn (or thread, rope, cable) from various raw fiber materials. ... It has been suggested that this article or section be merged with Cloth. ... Filaments surrounding a solar flare, caused by the interaction of the plasma in the Suns atmopshere with its magnetic field. ... Physics In physics, melting is the process of heating a solid substance to a point (called melting point) where it turns liquid. ... A spinneret is a spiders silk spinning organ. ... The pitch drop experiment at the University of Queensland. ... Rheology is the study of the deformation and flow of matter. ... It has been suggested that this article or section be merged into Strength of materials. ...

External links

• Nylon crystallinity
• Cold drawing of nylon