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To Determine the Process of Uniform Blending Technique on Yarn Quality of 172 Tex (5 Lbs/spy) Blended Yarn in Modified Apron Draft Spinning Frame.

Dr.A.K.M. Mahabubuzzaman
Principal Scientific Officer(CC)
Mechanical Processing Division, BJRI

Md. Kamal Uddin
Director (Technology)
Director (Technology), BJRI

Dr. Md. Osman Ghani Miazi
CSO
Mechanical Processing Division, BJRI

Abstract/ Executive Summary:

Jute/synthetic (acrylic, rayon, polyester) blended yarns of 5 lb/spy were produced at the blend ratio of 90:10. Different textile properties including quality ratio were tested. It was found that textile properties differed with the variation of blending technique. Yarns, produced, were tested for analyzing the effect of acrylic fibre in jute/acrylic blended yarn. Among the yarns produced from jute/acrylic blends, 90:10 blend jute in staple form was found to have achieved a better balance of quality ratio, tensile strength, Regularity of the yarn of 5 lbs/spy (nominal) than that of blending with long jute.

Keywords: Blending, Acrylic, Polyester, Rayon, Quality ratio

Location: Mechanical Processing Division, BJRI

Start Date: 01-12-2004

End Date: 30-06-2005

Program Area: Postharvest and Agro-processing

Commodity: Jute

Objectives:

In jute processing system, feeding of jute blended with other fiber in breaker card machine is an important factor for quality yarn. If blending is occurred more perfectly, the yarn will be more regular. To obtain yarn standard quality, first of all is to be determined an accurate way of blending. To select proper and appropriate technique to be used in blending with jute for specific uses and to optimize the performance characteristics of blended products.

Methodology:

Jute fiber of grade BWB and synthetic (acrylic, polyester, rayon) fiber, the component fibers of the blend, were first procured. The processing of the fibers for converting into yarns of 5 lbs/spy (nominal count) were made following the sequences of conventional jute processing system. For blending jute and synthetic (acrylic, polyester, rayon) fibers were first taken by weight as per blend ratio. Then the jute fiber was softened by the application of emulsion in softener machine and piled for 48 hours. Different blending technique i) Blending with Hopper feeder and Teaser Card along with jute fiber cutting as staple form and ii) Blending with Breaker Card and machine along with long jute on the feed lattice for processing in the modified apron draft spinning frame were followed. The synthetic (acrylic, polyester, rayon) fibers were separated and opened up manually by hand teasing and tufts of certain weights were made. After that the blending was carried out by spreading the component fibers i.e. jute and synthetic fibre (acrylic, polyester, rayon) in desired proportion 90:10 ratio by weight over the Breaker card lattice. The delivered slivers from breaker card were then processed through normal jute processing system and spun into yarns of 5 lbs/spy (nominal). The blended yarns thus obtained were then studied to assess to their physical properties e.g. actual count, twist, cv% and quality ratio etc. The above properties were determined by using standard testing equipment as per standard methods of testing. The component fibers of the blends i.e. BWB jute and synthetic (acrylic, polyester, rayon) fiber were characterized microscopically. The fineness of the fibers was determined by gravimetric method.

Source of Information: Annual Technical Report: 2004-2005 Page 56-59

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 96,000/-(Ninety six thousand taka)

Total Budget (Tk.) : 96,000/-(Ninety six thousand taka)

Achievement/Findings:

It is shown from the experiment that quality ratio of 5lb/spy-jute/acrylic yarn in staple form mixing at blend ratio 90:10 is 76.57, on the other hand for the jute/acrylic 90:10 blend with long jute the quality ratio of the yarn is 91.26. The quality ratios of both yarns are deferring more. In addition other textile properties such as CV%, extension at break are nearer for both the yarn. Among the above group of blends, the jute/acrylic 90/10 blend seemed to have achieved a better balance of quality ratio and tensile strength in 5 lb/spy (nominal) yarn than that of through Hopper feeder and Teaser Card blending with jute fiber cutting as staple form.

Knowledge Management: Report/Proceedings