Learning Zone Class Clips - Fire-proof clothing - Design and Technology Video. Denim Manufacturing Process | Plains Cotton Cooperative Association. Yarn Manufacturing Opening & pulling small tufts of cotton from bales The initial stage of denim production is Opening and Blending. Opening begins with baled cotton fiber being separated into small tufts.
A blend of cotton fibers is made on each opening line. These bales are selected using USDA High Volume Instrument (HVI) data, and PCCA's unique computer blending software produces optimal yarn strength. Cotton is delivered by air suction from the Opening and Blending lines, through additional cleaning and blending machines, to the Cards. The major functions of Carding are to remove foreign matter and short fibers, form the cotton into a web and convert the web into a rope-like form known as a sliver. The drawing process produces a single, uniform sliver from six card slivers. Cotton Fibers are formed into a yarn by centrifugal action in Open- End Spinning. The Open End Spinning Machines have robots on each side which automatically pieces up (repairs broken ends).
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