. Textile soaps and oils. A handbook on the preparation, properties and analysis of the soaps and oils used in textile manufacturing, dyeing and printing. sub-stance, and thence into theframes. After three to six daysthe sides and ends of the frameare removed, leaving a solidblock of soap, which is thencut into slabs and bars bymeans of mechanical wire ar-rangements. Prior to fitting, some soap-makers give the soap what istermed a cleansing boil. This is done by closing the soapwith water and steam, then adding a strong brine liquor in justsufficient amount to open the soap, and boiling with e
. Textile soaps and oils. A handbook on the preparation, properties and analysis of the soaps and oils used in textile manufacturing, dyeing and printing. sub-stance, and thence into theframes. After three to six daysthe sides and ends of the frameare removed, leaving a solidblock of soap, which is thencut into slabs and bars bymeans of mechanical wire ar-rangements. Prior to fitting, some soap-makers give the soap what istermed a cleansing boil. This is done by closing the soapwith water and steam, then adding a strong brine liquor in justsufficient amount to open the soap, and boiling with either closeor open steam for three to four hours, after which the pan isallowed to settle for about twelve hours, when the soap willhave separated to the top, and the brine below. The cleansingboil helps in the completion of the saponification, and thereforein the production of more perfect soap, while it tends to washout any excess of alkali that the curd soap may retain fromthe boiling on strength operation, and so make a moreneutral soap. Some soap-makers wiU, with their best quaUties,give even a second cleansing boil. The brine liquor may some-. FiG. 2.—Soap-frame. METHODS OF SOAP MANUFACTURE 17 times be used more than once, according to the quality of thesoap which is being made—if from good, clean fats, the liquormay be used several times; if from poor, dirty fats, it cannotbe used more than once or twice, as it becomes too highlycharged with dirt to work satisfactorily. After the cleansingboil, the soap is just closed and allowed to settle as describedabove. As previously mentioned, Curd Soap is not subjected to the
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectoilsandfats, bookyear
