A research on the parameters of the affecting yarn properties of cotton-polyester rigid core-spun yarns

Bu çalışmada, ring özlü iplik eğirme tekniği ile üretilen ipliklerin iplik özelliklerine, öz-manto oranı, multifilament iplikteki filament sayısı, büküm katsayısı ve özde kullanılan multifilament ipliğin yapısının (düz FDY ya da tekstüre) etkileri incelenmiştir. Bu amaçla, Ne 16 inceliğinde pamuk-polyester (PET) multifilament ring eğirme özlü iplikleri dört farklı öz-manto oranı ve üç farklı büküm katsayısı ile üretilmişlerdir. İplik özelliklerine multifilament öz ipliğindeki filament sayısının etkisini belirlemek amacıyla 36 ve 72 filament sayısına sahip iki farklı iplik seçilmiştir. Özlü iplikler ring eğirme yöntemi ile öz kısmında düz tamamen çekilmiş filament iplik (FDY) ve tekstüre filament iplikler kullanılarak pamuk-polyester özlü iplikler aynı koşullarda üretilmiştir. Öz-manto oranının iplik mukavemetine ve kopma uzamasına (%) etkisi istatistiksel olarak önemli bulunmuştur. Manto oranı arttıkça iplik mukavemeti artmıştır. Büküm katsayısının etkisi sadece FDY multifilament öz materyali kullanılarak üretilen iplikler için önemli bulunmuştur. Büküm katsayısı arttıkça iplik kopma uzaması artmıştır. Büküm miktarı arttığında, iplik düzgünsüzlüğü ve iplik tüylülüğü değerleri azaldığı gözlenmiştir. Her iki öz materyali tipi için de öz oranı arttıkça iplik düzgünsüzlüğünün azaldığı görülmüştür.

Pamuk-poliester sert özlü eğrilmiş iplikleriniplik özelliklerini etkileyen parametreler üzerine bir araştırma

In this experimental work, the effects of the core-sheath ratio, the filament count of multi-filament yarn, the twist coefficient and the yarn structure of multi-filament yarn (untextured FDY or textured yarn) on yarn properties of ring core-spun yarn were investigated. For this purpose cotton-PET multi-filament ring core-spun yarn (Ne16) produced with four different core-sheath ratios, three different twist coefficients. For determine the effect of filament count of multi-filament yarn on yarn properties, two different filament counts were selected, 36 and 72. The ring core-spun yarns were produced at same condition with 100% PET untextured fully drawn yarns (FDY) and textured yarns. The effect of core-sheath ratio on the yarn tenacity values and the yarn elongation were found statistically significant. The yarn tenacity value of core-spun yarn increased with increasing the sheath ratio in yarn. The effect of twist coefficient on the yarn elongation was found statistically significant for only FDY multi-filament core material type. The yarn elongation (%) values increased with increasing the twist coefficient. As the twist amount increased, it s seen that the yarn evenness and yarn hairiness values have been decreased. It has seen that the yarn evenness value decreased with increasing the core ratio in yarn, for both two core material types.

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