By Dr. Charles Tomasino
Monograph written for college students of the cloth undefined, facing the chemistry and applied sciences of yarn and upholstery dyeing and completing.
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Extra info for Chemistry & Technology of Fabric Preparation & Finishing
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Coconut Oil: The major fatty acids found in this oil a r e lauric (48%) and myristic (18%). Both acids have shorter length chains (C12 and C14) and are saturated. The laurel chain length is ideal for high foaming soaps. Its potassium salt has higher water solubility acids a n d is used to make liquid soap products. Corn Oil: Corn oil h a s a high unsaturated acid content (46% oleic and 42% linoleic acids). It is used extensively for cooking, as salad oil a n d for making oleomargarine. Because of the high amount of poly-unsaturated, its use leads to lower cholesterol levels in humans.
The hot water is clean enough for reuse in t h e desize range. The schematic in figure 21 shows the process flow for the recovered materials. The recovery unit is usually found at the dye house so the hot water can be recycled into the normal flow of desizing. The recovered size however must be returned to the weaving mill. Seldom are weaving mills a n d dye houses located near each other so a n added concern is transporting the concentrated size solution back to t h e weaving mill. Tanker trucks are used for this purpose.
Details of Continuous Rope Range 2. Continuous Open Width Range An open width range differs from a rope range only to the extent t h a t the fabric handling equipment is different. The chemicals, temperatures and dwell times, for the most part are the same as t h a t for a rope range. A schematic of a n open width range is seen in figure 8. Figure 8. Schematic of an Open Width Range a. Applicators - Pads Chemicals are applied by padding. Pad designs will be discussed later in t h e section on finishing.