The formation of the conical layers
It has already been mentioned that the ring rail is not moved uniformly. Its speed increases during upward movement and falls during downward movement. At the tip of each layer…
Structure of Ring Frame Yarn Packages
‘Drive systems’ in Ring Spinning machine, the mechanism used for building the ring frame packages, known as cops, was discussed. But, the actual yarn placement inside the package was not…
General Comparison between Filament and Staple Yarns Performance
Tenacity & Elongation As stated above in the table, Filament yarns have excellence properties compare with Staple yarns. But still, in terms of real production each of these yarns has…
Steps in Making Fibers into Yarns
For making yarns, there are few stages or process need to be done. Each staple and filaments have different stages and system for the production process. Filaments Several common system…
Types of Yarn Production
There are two classifications of yarns that will be produced by spinning which are Filament and Staple yarns. Filament These yarns are made from long, and continuous strands of fiber.…
Introduction of Yarn Spinning
Yarn spinning is a process of making or converting fiber materials into yarns. Since few centuries ago, spinning have been known as a process of converting raw materials(fiber) such as…
COMPARISON BETWEEN POLYMER TYPE AND KINETICS OF POLYMERIZATION
There is a large but not total overlap between the terms condensation polymers and stepwise kinetics and the terms addition (or sometimes the term vinyl) polymers and chain kinetics. In…
Testing and Spectrometric Characterization of Polymers
Public acceptance of polymers is usually associated with an assurance of quality based on a knowledge of successful long-term and reliable tests. In contrast, much of the dissatisfaction with synthetic…
CHROMATOGRAPHY
As will be noted shortly, certain techniques such as colligative methods (Secs. 3.6–3.8), light scattering photometry, special mass spectral techniques, and ultracentrifugation allow the calculation of specific or absolute molecular…
RACTIONATION OF POLYDISPERSE SYSTEMS
The data plotted in Fig. 3.7 were obtained by the fractionation of a polydisperse polymer. Prior to the introduction of GPC, polydisperse polymers were fractionated by the addition of a…
