Usporedba strukturnih svojstava prstenaste i SIRO pređe

undergraduate thesis

• Title (english): Comparison of structural properties of ring and SIRO yarns
• Author: Sara Nenadović
• Mentor: Dragana Kopitar (mentor)
• Committee member: Dragana Kopitar (predsjednik povjerenstva)
• Committee member: Zenun Skenderi (član povjerenstva)
• Committee member: Antoneta Tomljenović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Textile Technology; Zagreb
• Defense date and country: 2018-09-13, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Textile Technology

Abstract

Prstenasto predenje je najčešće korišten oblik predenja pređe koji još uvijek ima prednosti pred novim tehnologijama predenja. Prstenastim predenjem ispredaju se pređe prema potrebnoj finoći, visoke kvalitete i velike čvrstoće s jednostavnim radom stroja u usporedbi sa strojevima nekonvencionalnog predenja. Procesi SIRO predenja spajaju predenje i končanje u jednu tehnološku operaciju. SIRO tehnologija predenja podrazumijeva proizvodnju dvije odvojene niti tijekom procesa prstenastog predenja, gdje se uz dodatni mehanizam na prstenastoj predilici međusobno spajaju i uvijaju dvije niti. U završnom radu usporedila su se strukturna svojstva prstenaste i SIRO pređe nazivne finoće 20 tex. Na pređama se ispitala finoća, uvojitost, dlakavost, otpornost na habanje i površinski koeficijent trenja. Prstenaste pređe imaju veći broj stršećih vlakana od SIRO pređa u svim ispitanim dužinskim klasama. SIRO pređa otpornija je na habanje s obzirom na prstenastu pređu, gdje je prosječan broj ciklusa habanja prije prekida prstenaste pređe 35,7 ciklusa a kod SIRO pređe 53,8. Površinski koeficijent trenja prstenaste i SIRO pređe finoće 20 tex ne razlikuje se bitno.

Abstract (english)

Ring spinning is the most commonly used spinning process that still has advantages over new spinning technologies. With ring spinning process different fineness, high quality and high strength yarns are spun with simple machine operation compared to unconventional spinning machines. SIRO spinning process combines spinning and twisting processes into one technological operation. SIRO spinning technology implies the production of two separate threads during the spinning process, where with an additional mechanism on ring spinning machine two threads are interconnected and twisted together. In the final paper, the structural properties of the ring and SIRO yarns of 20 tex fineness were compared. The fineness, twist number, hairiness, abrasion resistance and friction coefficient were tested. Ring yarns have a greater number of protruding fibers compared to SIRO yarns, in all tested length classes. SIRO yarn is more resistant to abrasion compared to ring yarns, where the average number of abrasion cycles before breaks of ring yarns is 35.7 cycles and 53.8 cycles of the SIRO yarns. Surface friction coefficient of ring and SIRO yarns 20 tex is not significantly different.

• Keywords: SIRO pređa; prstenasta pređa; dlakavost; finoća; uvojitost; habanje
• Keywords (english): SIRO yarn; ring yarn; hairiness; fineness; yarn twists; abrasion resistance
• Language: croatian
• URN:NBN: urn:nbn:hr:201:549745
• Study programme: Title: Textile Technology and Engineering; specializations in: Clothing Engineering, Textile Design and Management, Industrial Textile and Clothing Design, Textile Chemistry, Materials and Ecology; Course: Textile Design and Management; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka tekstilne tehnologije i inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka tekstilne tehnologije i inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2018-09-28 07:19:15