Duck and chicken feathers are occasionally bleached with hydrogen peroxide. As a rule, the bleaching of such featehrs is limited to removing the yellowish tinge from naturally white feathers. It is impossible to bleach dark feathers to a clear white since they cannot withstand the necessary treatment in hot, alkaline peroxide solutions. Feathers may be bleached in stainless steel or ceramicware tanks fitted with heating coils. Wooden grates or stainless steel rods to hold the feathers under the surface of the bath should be available. The formulas and procedures given below are not necessary. It is strongly recommended that small scale trials be made to determine if the results are satisfactory and to make certain that the feathers are not being damaged before large bleaching operations are begun. Scouring the feathers are usually scoured at 120'F in a mildly alkaline soap bath. Either soda ash or sodium silicate may be added but unless th
配制方法:
3. Load the feathers loosely into the bath. Loading should reduce the bath temperature to about 120'F. Hold the bath at 120'F throughout a 5-6 h bleaching period or allow the temperature to drop gradually to room temperature over a longer period of time. 4. Remove the feathers from the bath (which may be replenished and reused) and rinse thoroughly with warm water, changing the water at least three times. Give a final cold rinse and dry the feathers at low temperature. Drying in a current of air will help to fluff the feathers.
地址：山东省烟台市开发区南昌大街48号
