Lint fiber

G. arboreum the tree wool of India, grows as tall as 4.5 to 6.0 m and includes both Indian and Asiatic varieties. Its seeds are covered with greenish gray fu22 fibers below the white lint fibers. 

A Type 12 enclosure is designed for use in those industries where it is desired to exclude such materials as dust, lint fibers, and flyings, oil seepage, or coolant seepage. 

Gossypium hirsutum, a tetraploid, has been developed in the United States from cotton native to Mexico and Central America and includes all of the many commercial varieties of American Upland cotton. Upland cottons now provide over 90%i of the current world production of raw cotton fiber. The lengths, or staple lengths, of the Upland cotton fiber vary from about I to l in. (22-36 mm), and the micronaire value (an indicator of fiber fineness and maturity but not necessarily a reliable measure of either see Chapter 8) ranges from 3.8 to 5.0. If grown in the United States, G. hirsutum lint fibers are 26-30 mm (1 to 1-3/16 in.) long [20]. Fiber from G. hirsutum is widely used in apparel, home furnishings, and industrial products. 

The relatively long fiber lengths (about 1 in. (25.4 mm) or longer) on the cottonseed relate to the fiber that is used by the textile industry. This raw cotton fiber, which can be spun into textile yarns, is called lint. However, another type of fiber, linters or fuzz fibers, which are very short, is also produced on the seed along with the lint [44]. The distribution of the lint and fuzz fibers over the seed surface is neither uniform nor random. The base of the seed mostly produces lint fibers, whereas cells near the tip of the seed mostly produce fuzz fibers. 

Falling dirt and settling airborne dust, lint, fibers and flying Falling dirt... 

Falling dirt, circulating dust, lint, fibers, flyings Falling dirt, circulating dust, lint, fibers, flyings... 

Likewise, the requirement for limiting the particle and fiber contamination is necessarily dependent upon actual service. Therefore, the user is urged to review component, equipment, and system requirements. If the purchaser s requirement does include a particle and fiber count, some industries have found that a representative square-foot section of surface must show no particle larger than 1000 microns and no more than 20 particles per square foot (215 particles/m ) between 500 microns and 1000 microns. Isolated fibers of lint should be no longer than 2000 microns, and there should be no accumulation of lint fibers. In some cases, lower particle size and populations may be necessary depending upon actual service. The seller and the purchaser shall agree to the equipment and procedure used to verify particle and fiber count, or both. 

Figure 10.2. SEM image of cotton seed surface with the initiation of lint fiber cells on the...

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