Acid wash / Random wash At present times, the most popular denim garments are random washed among the fashionable people. When solid washed the fading, effects are even and uniform in the garments but when random washed effects are uneven. […]
Feed of the Arm Sewing Machine II Study on industrial feed of the arm sewing machine with thread path diagram
Experiment Name: Study on industrial feed of the arm sewing machine with thread path diagram. Introduction: The machine which practices stitches by the loop of one group of thread links with the loop of other group of thread by the process of interloping is called the industrial feed of the arm machine. There are two […]
Crimp is a term to describe the waviness of a fiber. We can also describe this in terms of the force or energy required to uncrimp a fiber. It’s expressed in percentage. A crimped fiber placed on a flat plane is l0 and the length of the same fiber when the crimp is removed by applying a tension is l, then the crimp is given by …
For getting better quality of jute yarn, Finisher card machine is necessary in jute spinning industry. It is usually down striking and full circular carding machine, having 4.5 pairs of workers and strippers. Its feed and delivery is on the same side of the machine.
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
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.
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.