METHOD OF PROCESSING DOWN AND FEATHER RAW MATERIAL Russian patent published in 2014 - IPC D06L1/00 

FIELD: textiles, paper.

SUBSTANCE: method of processing down and feather raw material consists in twofold repeating the process of washing the raw material, followed by rinsing, processing with the wax-containing product, spinning and drying. The novelty is that the raw material is preliminary soaked, the washing of the raw material comprises two washing of 10 minutes each, at a water temperature of 35-42°C depending on the type of raw material with an intermediate rinsing, the rinsing after washing is carried out as 6 cycles of 6 minutes each in large amount of water, and during the first rinsing the water temperature is 30-35°C, and during the subsequent ones it is 7°C, during the penultimate rinsing the raw material is refined with wax-containing product, after the last two rinsing the water is fed into the recirculation tank for further soaking the raw material, the drying of clean raw material is carried out at a temperature of 120°C for 30 minutes under the pressure of 2 bar, then the dried raw material is cooled and dedusted for 10 min. All the water used in processing is withdrawn through the shaking sieves. This method is safe and environmentally friendly, since it does not use chemicals such as formalin and chloramine, enables to save the resources spent.

EFFECT: method is affordable and easy in use.

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