A Study on the Dyeing of Sodium Hydroxide Treated Polyester / Cotton Blend Fabrics
Jeyakodi Moses J.,
Pitchai S.
Issue:
Volume 3, Issue 1-1, January 2015
Pages:
1-9
Received:
12 August 2014
Accepted:
6 October 2014
Published:
24 October 2014
Abstract: The polyester (100%), cotton (100%) and Polyester / Cotton blend fabrics (65 / 35; 50 / 50 & 35 / 65) were treated with sodium hydroxide followed by hydrophilic finishing and dyeing to impart hygroscopic and dyeing characteristics. Then the finished fabric was tested for k/s value, fastness properties, wetting behaviour, water retention, wicking behaviour and static charge respectively. The sodium hydroxide treated and hydrophilic finished fabrics show improved k/s value with good fastness properties (wash, light and rubbing), wetting, water retention and wicking behaviour that consequently leads for the reduction of static charge. The Polyester / Cotton blend fabrics after sodium hydroxide treatment and hydrophilic finishing showed very good improvement in these characteristics.
Abstract: The polyester (100%), cotton (100%) and Polyester / Cotton blend fabrics (65 / 35; 50 / 50 & 35 / 65) were treated with sodium hydroxide followed by hydrophilic finishing and dyeing to impart hygroscopic and dyeing characteristics. Then the finished fabric was tested for k/s value, fastness properties, wetting behaviour, water retention, wicking be...
Show More
Double Cutter Face Milling of Spiral Bevel Gears
Ryspek Usubamatov,
Nor Zaiazmin Yahaya
Issue:
Volume 3, Issue 1-1, January 2015
Pages:
10-16
Received:
2 November 2014
Accepted:
12 November 2014
Published:
17 November 2014
Abstract: In manufacturing area, one of the most complex technological processes is the machining of spiral bevel gears. For these processes, special machine tools designed with peculiar manuals for calculating the gear geometry, and the setting-up processes were developed. The known technologies and design of gear-cutting machine tools are different and based on processes that cut the concave and convex sides of the spiral tooth separately or simultaneously. These processes are different in productivity and quality of gear machining. Due to these circumstances, manufacturers created many modifications, with different qualities of the gear-cutting processes. Presently, there are following technologies: continuous indexing (face-hobbing) and single indexing (face-milling) that unlimitedly available to the user. This paper presents a new face-milling process of machining spiral bevel gears that can increase productivity and improve the quality of gears. The new process presents a solution that uses two cutter heads simultaneously for machining both concave and convex sides of the spiral teeth. Manufacturers can accept the new technology of the spiral bevel gear that needs a wide spectrum of research to get optimal solutions.
Abstract: In manufacturing area, one of the most complex technological processes is the machining of spiral bevel gears. For these processes, special machine tools designed with peculiar manuals for calculating the gear geometry, and the setting-up processes were developed. The known technologies and design of gear-cutting machine tools are different and bas...
Show More
