METHOD OF PRODUCING BAST FIBRE Russian patent published in 2016 - IPC D01G1/00 

FIELD: textile.

SUBSTANCE: invention relates to primary processing of bast-fibre crops to produce short and single-type bast fibre as raw material for textile industry and can be used in processing bast-fibre crops in rolls, and in other package.

EFFECT: technical result is reduction of weight ratio of chaff and foreign impurities in obtained bast fibre, high efficiency of processing and is achieved by that method of producing bast fibre, which involves feeding material into processing zone under action of air flow with creation of vibration of material therein and reduction of forces of interaction of stems, their sections, fibrous strands, breaking of structure of stems and separating chaff from fibres, separation of bast fibre and chaff in two steps, first step of which includes enrichment chaff-fibre mass due to removal of chaff, based on differences of aerodynamic properties of bast fibre and chaff at interaction with air jet, stalks of bast-fibre crops are first crushed by separation of separate portions of mass of stems, and then breakdown of structure of stems and separation of chaff from fibre by coarse and fine scutching.

1 cl, 1 dwg