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HIDES AND SKINSCOMMERCIAL ASPECTS
HIDE AND SKIN STRUCTURE
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action addition alkaline amino acids applied bacterial basic bating beamhouse calfskins cattle hides characteristics chemical chloride chrome tannage chromium coating collagen color color index complex concentration Courtesy curing decrease deliming desired dimethylamine drum drying effluent elastin emulsion enzymes evaporation extract fatliquoring fatty acids fiber Figure fixation flesh formaldehyde Glazing grain groups hair follicle hide protein hides and skins humidity hydrogen increased isoelectric point keratin Leather Chemists leather industry Leather Manufacture leather production lignosulfonate lime liquor Lollar lubrication machine method moisture molecule naphthalene O'Flaherty obtained operation penetration pickle pounds practical quantity quebracho reaction Reinhold removed resin result Roddy salt sheepskin side soaking sodium sulfide sole leather soluble solution solvent structure suede sulfate sulfhydrate sulfonic sulfonic acid surface swelling synthetic tannage tanner tanning agent tanning process Technology of Leather tion types of leather unhairing United vegetable tanning materials vegetable tannins York