study of the effect of twist on the properties of synthetic filament yarns

Study of the effect of twist on the properties of synthetic filament yarns by Georiga. State Engineering Experiment Station, Atlanta. Download PDF EPUB FB2

The twist in yarns can be caused to affect the properties of the fabric in which the yarns are yarns are incorporated in a fabric such that adjacent sets of yarn vary in the direction of twist, different effects like the shade effect, stripe effect etc.

can be produced because of light reflecting from two sets of yarns. If yarns of soft feel and a pliable behavior is required twist factors around is used while at the other example, hard twisted, stiff and twist lively yarns will have twist factors of around It describes the nature and character of a yarn i.e.

characteristics like softness, smoothness, hardness, etc. of yarns. luster: Low-twist yarns of smooth filament have a high luster, while high-twist yarns such as crepe yarns give a duller, matte effect and a lively, drapable fabric. Classification of Twist Amount: 1. Zero Twist This only exists in raw reeled silk (filament) yarns where the silk gum can hold the filaments together.

Very Low Twist. The main focus of this experimental work is to study the effect of twist on filament yarn characteristics. This paper helps to understand the structure and behavior of yarns and their ultimate. The effect of moist heat setting (90 degrees C for 60 min) on the structure and properties of nylon 6 continuous filament yarns is studied.

The low-molecular-weight fractions are washed out. Among synthetic fibers, the polyester is the most used one. The texturing provides filament yarn characteristics such as appearance, touch and mechanical properties similar to those of spun yarns, allying the positive characteristics of spun yarns.

Many apparel filament yarns need to be textured to give desirable aesthetic properties, particularly for women’s wear markets. The principle of false-twist texturing is to create minor side-to-side variations across a filament yarn, causing the yarn to bend during controlled thermal shrinkage to create a 3D structure with a bulky feel.

been widely investigated. In this study the effect of first heater temperature, setting overfeed, and D/Y on the tenacity of set yarns and the effect of twist, texturing speed, and first heater temperature on crimp stability of stretch yarns are predicted using artificial neural network methodology.

Keywords: False twist texturing, Yarn properties. Jitendra Pratap Singh, Swadesh Verma, in Woven Terry Fabrics, Effect of fibre quality. To study the effect of fibre quality on absorbency, pile yarns were made from two different types of cotton: J (short staple) and MCU-5 (long staple), and a mixture of J with bamboo fibre.

These yarns were used in terry fabrics and the fabrics were tested for absorbency. 25]. In this study, a PET filament tow without twist was used as another model system to investigate how uniformly APPJ can treat fibers in different layers of a twist free filament tow.

Experimental Materials The PET filaments were provided by Yizheng Chemical Company (Jiangsu, China) with an average diameter of 60 μm. Multiple-ply yarns are used for fabrics that might require more strength or fabrics that need a desired surface effect. Filament yarn is made of one or more continuous strands that run the entire.

EFFECT OF YARN TWIST ON THE PROPERTIES OF CLOTH 1 By Herbert F. Schiefer and Daniel H. Taft ABSTRACT The effect of warp and filling yarn twist on the breaking strength, elongation at rupture, and fabric assistance of cotton cloth is discussed for the plain and 2/2 basket weaves.

In both weaves the number of warp and filling yarns per inch. Among synthetic fibers, the polyester is the most used one.

The texturing provides filament yarn characteristics such as appearance, touch and mechanical properties similar to those of spun yarns. Recent advances in fibre and yarn technology, coupled with the ever changing lifestyles of the present day consumers, has a considerable bearing on the ‘Product development’ of ‘Novel fabrics.’ Moreover, today’s consumers are becoming more and more conscious, in terms of fabric quality, design, performance and aesthetic attributes in a product and are on the constant look out for.

low, low, average, and high twist. Some of the common uses for yarns with different twists are given below: – Filament yarns used for smooth fabrics have no or very low twist. – Yarns used for napping, bulky sweaters, and pile in towels have low twist.

– Most spun yarns used for woven fabrics have average twist. The invention relates to false twist nozzles by means of which one or more threads are impinged upon with an intensive twisting flow.

At least one part of the conventional mechanic false twist producing devices can be replaced by optimising the air channels by means of a powerful twisting flow. A twist insertion plate is the new central element. Twisting, in yarn and rope production, process that binds fibres or yarns together in a continuous strand, accomplished in spinning or playing operations.

The direction of the twist may be to the right, described as Z twist, or to the left, described as S twist. Single yarn is formed by twisting fibres or filaments in one direction. Ply yarn is made by twisting two or more single yarns.

The present investigation is an attempt to study the effect of pre-twist level, percentage overfeed and air pressure on air textured yarn. Nylon 6 filament yarns with different twist levels were used as feed material.

For this purpose, a laboratory scale air texturing unit was fabricated and the experiments were carried out at the texturing speed. The effect of weft yarn fineness on filament the surface roughness of fabrics woven from polyester yarns through different fabric constructional properties was investigated.

Warp yarn type and count and warp density re the same but weft yarn we count, weft yarn filament fineness/numbers, and weft density were different for the fabrics in the. This paper describes the state of development for false‐twist texturing of thermoplastic continuous filament yarns.

Supply yarn parameters are shown to significantly affect the textured product. Quantitative and qualitative information is given to describe these effects.

The thermodynamic and crystallization rate parameters are presented for nylon 6, ny and polyethylene‐terepthalate. USA USA USA USA US A US A US A US A US A US A US A US A US A US A US A US A Authority US United States Prior art keywords continuous filament yarn filament yarn rope crimped Prior art date Legal status (The legal status is an assumption .This paper deals essentially with certain theoretical aspects of the mechanical properties of twisted continuous-filament yarns.

In particular, the effect of the equalization of filament tensions on initial modulus, tenacity, and breaking extension is discussed.The structural potential of plant fibres as reinforcing agents can only be realized when the highest reinforcement efficiency is employed.

Hence, aligned plant fibre composites are of interest. However, due to the short length of technical plant.