Browsing by Author "Nová, Lenka"
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- ItemAnalýza příčných řezů přízíNová, Lenka
- ItemAnalýza příčných řezů přízí(Technická Univerzita v Liberci, 2008) Nová, Lenka; Křemenáková, DanaThis thesis is elaborated on the theme of cross-section analysis of yarns from acrylic fibers. Work describe properties acrylic fibers and yarn. Further method measuring packing density of yarn and diameter of yarn. In made experimentation, on set open-end yarns, has been by force of image analyses measuring packing density, diameter of yarn and numer of fibers in cross section. Diameter of yarn has been measured also by optoelectric sensor Uster and at the same time was measuring also properties of acrylic yarn. Results of experiment are stated in tables and graphs. Comparison influence parameter of yarn on packing density of yarn, average of yarn, fiber numbers in yarn and strength of yarn is in finis.
- ItemStruktura rotorové přízeNová, Lenka
- ItemStruktura rotorové příze(Technická Univerzita v Liberci, 2006) Nová, Lenka; Křemenáková, DanaThis bachelor thesis is elaborated on the theme of structure and properties of rotor yarn. Thesis describes principle of rotor spinning and reasons of belt formation. It was measured number of belt fibers, length of fibers and it was evalued yarn cover factor of belt fibers on the experimental collection of rotor yarn on the image analysis. Results of calculations are show in the figures and diagrams. It is compared influence of yarn parametres on the belt fibers, length of belt fibers and yarn cover factor of the belt fibers in the conclusion.