Some Measures for Improving Blended Yarn Quality.

A recent survey on the manufacture of manmade yarns in India revealed that polyester blended yarns suffered a degree of imperfection far higher than that in mills outside India. Warp streakiness, weft bars, and weftwise defects frequently contribute to fabric defects and higher value loss. Researchers investigating methods to reduce imper..

Structure/property relationship in rotor and friction-spun yarns

The relationship between the structure and properties of ringspun, rotor open-end-spun and Dref friction-spun viscose ray on yarns is investigated. The dispersion of the fire helix angle seems to be the decisive factor for determining the tensile behaviour of rotor-spun yarn. In Dref yarns the extent of the dispersion as well as some degr..

Controlling yarn imperfections through technological upgradation

Technological advances which have reduced the incidence of imperfections in yarns are reviewed. Particular attention is given to developments related to spinning. Evenness testers, opening and cleaning machines, spinning advances and air conditioning equipement are discussed.

Selection of sewing thread suitable for elastic knitted fabrics

This paper selected blends of polyester with cotton and elastic thread made from PBT changed polyester. Using two types of stitches and sewing two types of knitted fabrics, a test is made on these stitches. It was proved by experimental analysis that a suitable sewing thread should be selected according to elasticity of the fabric.

Clamping device for a yarn layer and use thereof

A clamping device for a yarn layer comprises a clamping comb having spaced-apart clamping lamellae, whereby the clamping comb is inserted into the yarn layer. A reed comb can also beinserted into the yarn layer and both the reed comb and the clamping comb are longitudinally adjustable relative to each other by an amount greater than the s..

Spool holder for thread spools

A spool carrier for supporting yarn spools having either a cylindrical or conical core is claimed. The core has an inner core wall terminating in a distal edge. IPC B65H.

Novel Building Technique Employs Kevlar Fiber.

In partnership with Du Pont. Linear Composites and Curtins Consulting Engineers have developed modular compression engineering, an innovative civil engineering technique wherein cables of Kevlar fiber are used to connect such building materials as concrete, brick blocks, wood, or composite panels into basic building modules. The cables, m..

Thread Tension Control on the Winding Machine

At ITMA 1995, Cezoma Textilmachinefabriek will exhibit the Tension Control Unit (TCU), a device for controlling yarn tension on the takeup heads of winding machines. Yarn tension on the takeup heads of winding machines. Yarn apckage diameter, upstream dyeing processes, and earlier stages of winding traditionally dictate yarn tension. The ..

Effects of hoop stress, initial shear stress, and shear viscosity ratio on the steady two-phase fiber spinning

The steady analysis of two-phase fiber spinning was investigated in this study. A simple model was selected to examine a two-phase flow in which the two fluids are a Newtonian fluid as the core layer and an Upper-convected Maxwell fluid as the skin layer. Additionally, the hoop stress was considered to investigate the effect on the flow b..

실의 인장성질

실의 구조와 실 굵기의 증가가 실의 인장성질에 미치는 영향을 조사하였다. 시료들은 시험전 적어도 24시간 동안 표준실험실 조건에서 컨디셔닝하였다. 실의 평균절단하중, 비강도 및 평균절단신도와 번수와의 관계를 조사하였다. 실험 결과, 실이 세번수일수록 링 방적사 및 에어젯 방적사 모두의 경우에 있어서 절단하중이 감소하였다. 섬유의 종류에 따라 에어젯 ..