Last edited by Fausho
Sunday, August 2, 2020 | History

2 edition of spinning of cotton blends on the Dref II system. found in the catalog.

spinning of cotton blends on the Dref II system.

L. A. Bathie

spinning of cotton blends on the Dref II system.

by L. A. Bathie

  • 183 Want to read
  • 33 Currently reading

Published by Sawtri in Port Elizabeth .
Written in English


Edition Notes

SeriesSawtri technical report -- no.582
ContributionsSouth African Wool and Textile Research Institute.
ID Numbers
Open LibraryOL21898852M
ISBN 100798832258

Buy products related to cotton blend linen products and see what customers say about cotton blend linen products on FREE DELIVERY possible on eligible purchases. Augbunny Cotton/Linen Blend by /2-inch Muslin Produce Bags with Drawstring, 6-Pack Audible Listen to Books & Original Audio Performances. There are three current technologies used today for spinning fibres, Roving spinning which uses the legacy ring -spinning technology of the twentieth century, Open end, Rotor or Break Spinning used for high quality threads and Dref friction spinning for other yarns. Friction spinning is the fastest of all these techniques though the yarn is irregular and bulkier, making it only suitable for some applications.

Spinning Technologies. There are three current technologies used today for spinning fibres, Roving spinning which uses the legacy ring -spinning technology of the twentieth century, Open end, Rotor or Break Spinning used for high quality threads and Dref friction spinning for other yarns. Friction spinning is the fastest of all these techniques though the yarn is irregular and bulkier, making.   This is a blendomat. It blends the fibers often from different farms and crops to ensure a uniform mix. Processed cotton being converted to yarn destined for Los Angeles.

  The merits which makes it unique ever are i)It produces the strongest yarn, it is the bench mark among all % staple fibre spinning systems for various types of fibres and their blends. ii)It can produce yarns with a large range of twist, density from very low to very high. colored cotton. With this blend, brown cotton is added to silk. I suspect the silk in this case is tussah silk, because its natural color would add interest to this blend, plus this blend was somewhat easier to spin than with the 70/30 cotton silk blend. Of the three blends on this page, this is probably the best blend for a beginner.


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Spinning of cotton blends on the Dref II system by L. A. Bathie Download PDF EPUB FB2

The DREF-2 friction-spinning machine (Fehrer, ). Unlike the DREF-2 and the Masterspinner, the DREF-3 is a core–sheath type of friction-spinning arrangement as shown in Fig. (Fehrer, ). On this machine, there are two drafting units, one for the core fibres and the other for the sheath fibres.

Introduction: Friction (DREF) spinning system is an Open-end and or Core sheath type of spinning system. Along with the frictional forces in the spinning zone the yarn formation takes place.

The DREF spinning system is used to produce yarns with high delivery rate (about mpm). Spinning of Cotton-Jute Blends on the Cotton System B.

SRINATHAN, A.S. SATHE, M.S. PARATHASARATHY & V. SUNDARAM Cotton Technological Research Laboratory, Bombay Received 4 June ; accepted 15 July The feasibility ing cotton-jute blends on cotton spinning machinery and the problems involved therein bave been by: 1.

DREF II. DREF 3. DREF 5 3 Modern DREF spinning machines. DREF DREF DREF First demonstrated in Yarn Delivery Speed Up to m/min Fibre Material Core fibres Staple Lengths: mm, Man-made fibers Cotton blends with manmade. 11 Continued Sheath-fibers: Staple Length mm Man-made fibres and special fibres as indicated.

DREF II The Dref 2 was exhibited in the at ITMA exhibition. The feasibility of using two perforated rotating cylinders (as fibre collectors) while at the same time the spinning-in of fibres into yarn occurred.

It operated on the basis of a mechanical/aerodynamic spinning system with an internal suction and same direction of drums rotation.

Cotton Mule Spinning at Masson Mills - Duration: Rieter J 20 Air-Jet Spinning Machine Com4jet piecing original animations - Duration: DREF SPINNING MACHINES - Duration. Fehrer developed the DREF friction spinning system in In the very first machine, the DREF 1 friction spinner, due to the absence of positive control over the assembly of fibres, a lot of slippage occurred between the fibre assembly and the perforated roller, which reduced the twisting efficiency.

DREF DREF-1 friction spinning system was developed in by Dr. Fehrer. A.G. of Austria. The fibers were opened with an opening roller and allowed to fall on a single perforated cylindrical drum slot ; The rotation of the drum impart twist to fiber assembly.

DREF-II Friction Spinning DREF-III friction spinning • The DREF-III friction spinning machine was introduced into the market in This machine was developed to improve yarn quality, extend the yarn count up to 18s Ne and produce multi-component yarns.

• The DREF-III uses a core-sheath type friction arrangement. TECHNOLOGİCAL DEVELOPMENTS OF DREF SYSTEM Dref spinning system has a drafting unit can handle all types of synthetic fibres such as; aramid, FR and pre-oxidized fibres, polyamides, glass fibers in blends phenol resin fibres (e.g.

Kynol), melamine fibres (e.g. Basofil), melt fibres (e.g. PA, PES, PP), natural fibres (wool, cotton, jute. Friction Spinning or Dref Spinning is a textile technology that suitable for spinning coarse counts of yarns and technical core-wrapped yarns.

Dref yarns are bulky, with low tensile strength making them suitable for blankets and mop yarns, they can be spun from asbestos, carbon fibres and make filters was water systems.

A study has been carried out on the production of jute blend yarns using the DREF-3 friction spinning technology. Blend yarns were produced from TD3 variety jute fibre in combination with cotton.

To explore the potentialities of the DREF-3 friction spinning system for processing man-made fibres. 6s and 12syarns were produced from % polyester.

% viscose. polyester/cotton and polyester/viscose blends. The properties of these yarns were studied and compared with those of the equivalent rotor- and ring-spun yarns.

The spinning limit for three different fibres (cotton, viscose rayon and polyester) on a Dref-3 friction spinning machine has been investigated.

The change in yarn properties with progressive change in count has also been reported. The count range has been seen to be dependent on fibre type.

As one progresses from very coarse to fine counts. Spun Core - Dref Yarn Dref is the only spinning system to create special high-tech, core and multicomponent yarn constructions, virtually free of limitations.

Many FITCO Dref yarns have been constructed according the customer's own specifications. A Comparative Study of Hooks in the Ya Rns Produced by Different Spinning Technologies that Dref-II spinning system.

noticeable at higher twist levels and in 50/50 polyester/cotton blend. The DREF-3 spinning method produces a yarn by wrapping a fibrous core with a fibrous sheath at production speeds up to meters per minute. The comparative merits of this high-production spinning method to spin all-cotton yarns are inves tigated and reported.

A Study of Spinning Persian Silk Waste/Cotton Blends on Rotor Spinning System A. Loghavia, S. Shaikhzadeh Najara, S. Etratia, F. Mazaheria and M.

Haghighat-kisha a Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran Abstract In this study, processing of cutting and de-gumming of silk waste samples were carried and silk waste sliver was prepared.

Main article: Cotton-spinning machinery. Ring spinning is one of the most common spinning methods in the world. Other systems include air-jet and open-end spinning, a technique where the staple fiber is blown by air into a rotor and attaches to the tail of formed.

Spinning aggregate speed: rpm controlled by a frequency inverte. Output roller speed: m/min controlled by a frequency inverte. Grooved speed: m/min controlled by a frequency inverte.

Range. Yarn cont range: Nm. Inputting blend weight: g/m. Staple length: mm. We will give you any of the 2 books from the below list if you fulfill our conditions.

If you want to download this book, you need to write an unique article about textile related topics. The article must be at least words or above and contains valuable information.

No copy paste is allowed and we will check plagiarism to confirm.: Cotton Blend. Skip to main content. Try Prime All Go Search EN Hello, Sign in Account & Lists Sign in Account & Lists Orders Try Prime Cart.

Today's Deals Your Gift Cards Help.spinning are mostly used. The title of our project is “Comparative study on ring, rotor and air-jet spun yarn”. It is a special type of project work as it is an observing and analytical work.

It is very much important in this time because although ring spinning machine produces best quality yarn but some.