METHOD OF PRODUCING FIBRES FROM INDUSTRIAL HEMP Russian patent published in 2024 - IPC D21C3/00 D21C5/00 D01C1/02 

FIELD: cellulose production.

SUBSTANCE: method of producing fibres from industrial hemp involves cooking for 12 hours with mixing a mixture of a powder fraction with size of up to 250 mcm, which has undergone at least two-month maceration with a degree of polymerisation from 400 to 700 in a solution of N-methylmorpholine-N-oxide with melting point 120 °C and with water content of not more than 10% from volume when adding antioxidant in form of propyl gallate in concentration of 0.5% to obtain a homogeneous solution. Solution is then passed through a capillary viscometer with a spinneret at the outlet, and after exiting the spinneret, the newly formed fibre is passed through an air gap with height of 5-15 cm at temperature of 20±2 °C and humidity 50±5%. Further, the fibre is passed through a settling bath in which water of room temperature is used as a settling agent, and the fibre is supplied to a winding shaft.

EFFECT: disclosed is a method of producing fibres from industrial hemp.

1 cl, 5 tbl, 6 dwg