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wetting back- semi-processed leather is rehydrated. sammying - 45-55%(m/m) water is squeezed out the leather. splitting - the leather is split into one or more horizontal layers. shaving - the leather is thinned using a machine which cuts leather fibres off. neutralisation - the pH of the leather is adjusted to a value between 4.5 and 6.5.
During the stages of wood processing, wood dust is generated. 'Wood dust' is "any wood particle arising from the processing or handling of woods." [5] Sawing, routing, sanding, among other activities, form wood dust, which can then become airborne during the process of dust removal from furniture, maintenance, or equipment cleanup. [6]
Proprietary leather cleaners – Commercially produced cleaners are commonplace with leather care, but can have negative effects if not closely researched or familiar with the ingredients. Wet cleaning and solvent cleaning – The primary purpose of any wet cleaning on leather is to remove surface soiling. Leather should not be soaked in water.
A food safety hazard is any biological, chemical, or physical property that may cause a food to be unsafe for human consumption. Identify critical control points A critical control point (CCP) is a point, step, or procedure in a food manufacturing process at which control can be applied and, as a result, a food safety hazard can be prevented ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 1 February 2025. Textile fiber from the hair of sheep or other mammals For other uses, see Wool (disambiguation). Wool before processing Unshorn Merino sheep Shorn sheep Wool is the textile fiber obtained from sheep and other mammals, especially goats, rabbits, and camelids. The term may also refer to ...
Long wool fibres can be up to 15 in, but anything over 2.5 inches is suitable for combing into worsteds. Fibres less than that form short wool and are described as clothing or carding wool, and are best suited for the jumbled arrangement of woolens. At the mill the wool is scoured in a detergent to remove grease (the yolk) and impurities.
It can be assumed that the animal skins were used for clothing throughout the human history, although in the ways that are primitive when compared to the modern processing, the earliest known samples come from Ötzi the Iceman (late 4th millennium BC) with his goatskin clothes made from leather strips put together using sinews, bearskin hat, and shoes using the deerskin for the uppers and ...
Livestock provide a variety of food and non-food products; the latter include leather, wool, pharmaceuticals, bone products, industrial protein, and fats. For many abattoirs, very little animal biomass may be wasted at slaughter. Even intestinal contents removed at slaughter may be recovered for use as fertilizer.