Seçilmiş İpliklerde Zweigle İplik Tüylülüğü Sonuçlarına Farklı Test Hızlarının Etkisi

ÖZET: Bu çalışmada, Zweigle G657 cihazında iplik tüylülüğü sonuçlarına farklı test hızlarının etkisi araştırılmıştır. Ölçümler, cihazda seçenek olarak sunulan 25 m/dk, 50 m/dk, 100 m/dk ve 400 m/dk olmak üzere dört farklı test hızında gerçekleştirilmiştir. Test hızının etkisi SPSS programı kullanılarak istatistiki olarak incelenmiştir. İplik tüylülüğü sonuçları üzerinde, test hızındaki değişimin direkt olarak etkili olduğu görülmüştür. Tüylerin sınıflandırılmasında 10 mm’ye kadar, test hızları arasındaki farkın önemli seviyede olduğu görülmüştür. Aralarındaki bu farklılıklar 10 mm’den sonra önemsiz düzeye gelmiştir. Test hızı arttıkça ipliğin S3 tüylülük değerlerinde genel olarak bir artış eğilimi gözlenmiştir. Ancak bu çalışmada literatürden farklı olarak, çalışma için seçilen farklı yapıdaki ipliklerde farklı sonuçlarda elde edilmiştir. Farklı hızlarda elde edilen sonuçların karşılaştırma amaçlı kullanılmasının doğru olmayacağı net olarak görülmektedir. Yeni versiyon cihazlarda daha yüksek test hızlarına çıkma eğilimi bulunmaktadır. Bu nedenle, S3 tüylülüğü bilgisi verilirken, hangi cihazda ve hangi test hızında ölçüldüğü bilgisinin verilmesi gerektiği çıkarımı yapılmıştır.

The Effect of Different Test Speed on Zweigle Yarn Hairiness Results in Selected Yarns

ABSTRACT: In this study, the effect of different test speeds on yarn hairiness results in the Zweigle G657 device was investigated. Measurements were carried out at four different test speeds of 25 m/min, 50 m/min, 100 m/min and 400 m/min, which are available as options on the device. The effect of test speed was analyzed statistically using the SPSS program. It has been seen that the change in test speed has a direct effect on the yarn hairiness results. It has been observed that the difference between test speeds up to hairs in 10 mm in the classification of hair numbers is significant. These differences between them became insignificant after hairs in 10 mm. It can be generally said that an increasing trend was observed in the yarn S3 hairiness values as the test speed increased. However, different results were obtained in the yarns of different structures selected for the study different from the literature. It is clearly seen that it would not be appropriate to use the obtained results from different speeds for various comparisons. There is a tendency for higher test speeds on newer version devices. For this reason, it has been deduced that it is necessary to give the information on which device and at which test speed it was measured while giving the S3 hairiness information.

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Commercialized Denim Fabric Production with Post-Industrial and Post-Consumer Wastes

The purpose of this study was to produce 100% recycled denim without a tradeoff in quality according to zero waste concepts.

Initially, the waste points from raw materials to final product in denim fabric production process were determined.

Then, denim fabrics were produced from post-industrial (recycled cotton fibers obtained from denim wastes) and post-consumer wastes (produced from recycled PET bottles).

Classic cotton fibers and alternative regenerated cellulose fibers (Tencel®) were used as carrier fiber in addition to mentioned fibers for eliminating recycled fibers disadvantages.

The effect of fiber types on yarn or fabric characteristics were investigated in accordance with planning design and construction.

Furthermore, the relationships between fibers and yarns/fabric results were statistically evaluated using correlation analysis.

The results of this investigation show that the amount of fibers have a significant effect on yarn unevenness, thick places, neps, hairiness, air permeability and abrasion resistance of the samples.

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Effect of Microfilament Yarns on The Performance Properties of Denim Fabrics

When efforts for innovation in product design are combined with developments in filament yarn technology, these yarns open different alternatives on behalf of evaluate the textile industry.

From this point of view, usage of filament and multifilament yarn structure in denim sector has been a research subject.

In this study, denim fabrics were designed and produced by using multifilament polyester yarns with seven different filament numbers.

The tensile strength (warp/weft), tear strength (warp/weft), stretch properties, air permeability, stiffness, water vapor absorption and hydrostatic pressure test of fabrics were performed.

Fabric stiffness increase and air permeability decrease as long as yarns have more microstructure through higher filament number.

Moreover, it is foreseen that fabric problems may be experienced in terms of elasticity growth when yarns have higher filament number.

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PET Şişe Atıklarının Tekstil Endüstrisinde Değerlendirilmesi ve Sürdürülebilirliğe Katkısı

ÖZET: Plastiklerin geri dönüşüm teknolojilerinde yaşanan gelişmeler, fiyat ve ekolojik avantajlar nedeniyle tekstil endüstrisi için yeni bir hammadde kaynağının oluşmasını sağlamıştır. Günümüzde tekstil sektöründe en fazla tüketilen  polimer olan Polietilentereftalat (PET) polimeri; çoğunlukla su, meşrubat vb. sıvı gıdaların piyasaya sürülmesi amacıyla kullanılan PET ambalajlardan geri dönüşüm tesislerinde PET talaşları olarak geri kazanılabilmektedir. PET talaşlarının eriyikten lif çekim yöntemi ile kullanılabilir life dönüşmesi de mümkündür. Bu çalışmada PET talaşlarının tekstil sektöründe kullanımı açıklanarak, Türkiye'deki PET talaş ve bu talaşlardan lif üreten işletmelerimizin durumu hakkında bilgi verilmektedir. Ayrıca Türkiye'de kurulu işletmeleri, bu alanda sahip oldukları teknolojik düzey bakımından, yurtdışındaki emsalleriyle karşılaştırma imkanı da olmuştur. Bu bağlamda, geleceğe yönelik bu alanda yapılması gereken yenilikler ve izlenmesi gereken stratejiler üzerine tavsiyelerde bulunulmaktadır.

ABSTRACT: Developments in plastics recycling enabled a new raw material for textile industry which creates economical and ecological advantages.Polyethyleneterephthalate (PET),which is the most consumed polymer in textiles recently, is recycled into PET flakes from bottles which have been used for water; oil, drinks etc. packaging. It is possible to spin fibers from melted PET flakes. In this study, usage of PET flakes in textile industry was explained. Based on this explanation, some information about the conditions of Turkish plants which produces PET flakes and fibers from these flakes were given. Moreover, Turkish recycle plants of PET fiber are compared with similar foreign plants in terms of technological background. In this context, some advices are given about developments which have to be accomplished and strategies in this field that should be followed.

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The Effect of Drawing Ratio and Cross-Sectional Shapes on the Properties of Polypropylene CF and BCF Yarns

Polypropylene (PP) is a versatile and widely used polyolefin polymer with outstanding properties such as low density, easy processability, lower cost, low melting point, etc.

Properties of the polymer, fiber cross-section and process parameters have an important influence on the filament yarn properties.

In this study, PP filament yarns as C-shaped and round cross-sectional shapes were produced with five different drawing ratios by using CF and BCF yarn types.

We focused on changes of yarn test results (linear density, tenacity, breaking elongation, shrinkage in boiling water and the amount of spin finish lubricants) with the effect of drawing ratios, cross-sectional shapes and yarn types (CF and BCF).

The findings from this study make several contributions to the current literature.

We found that drawing ratios, cross-sectional shape and yarn types are effective on the testing results separately. Furthermore, these differences are statistically significant when their effects are taken together.

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Utilization of Waste Yarns in Hair Interlining Industry

There has been an innovation need for utilizing fine yarn wastes nowadays.

In this study, probability of using yarn wastes in hair interlining industry has been investigated.

Information about hair interlining was given and production problems were investigated.

It was underlined that by using wastes these problems can be solved environment-consciously.

Mass per unit area, breaking strength, elongation at break, fiber blending ratio, circular bending stiffness, and dimensional change of standard and environment-friendly interlinings were tested and comparatively investigated.

Consequentially, environment-friendly hair interlinings produced from different yarn wastes have lower shrinkage results.

It was found that breaking strength, elongation at break, and circular bending stiffness results of the two fabrics had no remarkable difference.

With this study, suitable utilizing area for waste yarns were found and singeing and sizing steps of the production were eliminated.

In every sense, this study brings innovations for hair interlining production and makes contributions to the environment.

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