It is an independent method to determine the amount of crystalline matter present in the fiber. W. L. Bragg presented a simple explanation of the diffracted beams from a crystal. When X-ray beam is incident on a crystal, it strongly reflected wherever its layers of atoms at an angle show in fig. Such that, nλ=2dsinθ
Absorption of IR radiation method
Infra-red (IR) spectroscopy is one of the most common and widely used spectroscopic techniques. When electromagnetic waves interact with matter, they are scattered and absorbed. Infrared spectroscopy, radiation with wavelengths between 1 -15 μm is absorbed at certain characteristic frequencies, which yield structural information.
Crystalline and Amorphous Structure of Fiber
Amorphous region of the fiber is defined as the region of the fiber where there is no longer the order of chain molecules. The polymer chains are randomly placed in amorphous region. As a result, there is more air space in the amorphous fiber.
Breaker Carding Machine
In the carding, the operation the long strands of jute are converted into a continuous ribbon of fibers. The ribbon is known as sliver. Different qualities of jute in the batch are also blended and much shorter fibers are removed too. The machines used in the carding process are generally two types-breaker card and finisher card
Bar tack Sewing Machine II Study on bar tack sewing machine with thread path diagram and sample production.
Industrial bar tack machine is actually a lockstitch machine group. By this machine, a very high density lockstitch is produced in very short length for increase the strength of that particular place. These machines are used for sewing both woven and knitted garments. For light thickness fabrics, needle size should be lower and heavy thickness fabric, height needle size should be used.
OD Automatic Batch Mixer Machine
Experiment Name: Study on the OD Automatic Batch mixer machine. Introduction: Jute fibre is consists of lignin, so it is hard and brittle. Easily breaks down due to abrasion and mechanical treatment. To make it soft and easy a mixture of some lubricating agent is used. The mixture of these elements is called emulsion. Oil […]
Different Parts of a Sewing Machine and Their Function
A sewing machine is a textile machine used to stitch fabric, paper, card and other material together with thread. It is an important part of the garment manufacturing industry as well.They are different types of sewing machines that are available in the market. The basic functionality of the machine is one and the same.
Management and it’s Functions
Management involves four basic activities—planning and decision making, organizing, leading, and controlling. Although there is a basic logic for describing these activities in this sequence (as indicated by the solid arrows), most managers engage in more than one activity at a time and often move back and forth between the activities in unpredictable ways (as shown by the dotted arrows).
Span Length
x % Span length is the distance spanned by x %of fibers in the specimen being tested when the fibers are parallelized and randomly distributed and where the initial starting point of the scanning in the test is considered 100%. This length is measured using "Digital Fibrograph‘.
Fibrograph Method
The original idea of the photoelectric scanning or Fibrograph method has been developed by Hertel in 1940 for testing cotton lint. This test method is much faster than the array method and is used widely in fiber laboratories for measuring fiber length and length distribution.