Primernost pletiv iz recikliranih sintetičnih prej za športne modrce

Pušnar, Rok (avtor), Rijavec, Tatjana (mentor), Podbevšek, Tanja (komentor)

Športni modrc je oblačilo, ki pokriva ženske prsi in jim nudi oporo med telesno vadbo. Najpogosteje je izdelan iz visokoelastičnega poliestrskega ali poliamidnega pletiva z dodanim elastanom. V raziskavi spletne prodaje športnih modrcev je bilo ugotovljeno, da je danes v prodaji petintrideset uveljavljenih blagovnih znamk, ki ponujajo oseminštirideset različnih modelov, med katerimi so le štirje modeli iz recikliranih vlaken in sicer iz recikliranega poliestra. Reciklirana poliamidna vlakna trenutno ne uporabljajo za izdelavo športnih modrcev. V spletni anketi je bilo ugotovljeno, da je pojem recikliran material večinoma pravilno razumljen. Kar 74,3 % vprašanih je menilo, da so oblačila iz recikliranih vlaken primerljive kakovosti z oblačili iz nerecikliranih vlaken, le petina jih je menila, da so izdelki iz recikliranih vlaken dražji. V laboratorijski analizi pletiv je bilo dokazano, da je pletivo iz recikliranega poliestra enako primerno za kompresijske športne modrce kot pletivo iz nerecikliranega poliestra, ker ima primerljive natezne lastnosti in celo nekoliko boljše uporabne lastnosti, saj je težje raztegljivo pri višjih raztezkih (50 % oziroma 100 %) in bolj elastično povratno. Pletivo iz recikliranega poliamida, ki je bilo izdelano iz poliamidnih 6 vlaken, je imelo slabše mehanske lastnosti in je bilo lažje raztegljivo pri 50 % oziroma 100 % raztezku kot pletivo iz nerecikliranega poliamida, ki je bilo izdelano iz poliamidnih 6.6 vlaken. Pletivi iz recikliranih vlaken imata slabšo zračno prepustnost in slabšo vpojnost kot pletivi iz nerecikliranih vlaken. Pletivi iz poliestra sta bili lažji, tanjši in mehkejši kot pletivi iz poliamidnih vlaken. Za kompresijske modrce je pletivo iz nerecikliranega poliestra manj primerno kot ostala tri analizirana pletiva.

• Jezik: Slovenski jezik
• Ključne besede: modrc, nedrček, udobnost, elastični povratek, reciklirana vlakna
• Vrsta gradiva: Diplomsko delo/naloga
• Organizacija: NTF - Naravoslovnotehniška fakulteta
• Leto izida: 2021
• PID: 20.500.12556/RUL-129691
• Datum objave v RUL: 07.09.2021

Sekundarni jezik

• Jezik: Angleški jezik
• Naslov: Suitability of knitwear from recycled synthetic yarns for sports bras

Izvleček

A sports bra is a garment that covers a woman’s breasts and provides them with support during exercise. It is most often made of highly elastic polyester or polyamide knit with added elastane. A survey of online sales of sports bras found that there are 35 well-established brands on sale today, offering 48 different models, of which only four are made of recycled fibres, namely recycled polyester. Recycled polyamide fibres are not currently used for making sports bras. In the survey found that the term recycled material is mostly properly understood. As many as 74.3% of respondents thought that clothes made of recycled fibres were of comparable quality to clothes made of non-recycled fibres, only a fifth of them thought that products made of recycled fibres are more expensive. In laboratory analysis of knitwear was confirmed that polyester knit is as suitable for compression sports bras as a knit from non-recycled polyester because it has comparable tensile properties and even slightly more appropriate, as for its stretch at higher elongations (50% or 100 %) is needed higher force and also it is better elastic recovered. The recycled polyamide knit, which was made of polyamide 6 fibres, had poorer mechanical properties and was stretch at 50% and 100% elongation with lower force, respectively, than the non-recycled polyamide knit, which was made of polyamide 6.6 fibres. Knits from non-recycled fibres had poorer air permeability and lower water absorbency than knits from non-recycled fibres. Polyester knits were lighter, thinner and softer than polyamide knits. Non-recycled polyester knit is the least suitable for compression bras then other three analysed knits.

• Ključne besede: bra, corselet, clothing comfort, elastic recovery, recycled fibres