METHOD OF PRODUCTION OF SEPARATED FIBRES WITH LOW FLAMMABILITY Russian patent published in 2015 - IPC D06M13/12 C09K21/06 

FIELD: textiles, paper.

SUBSTANCE: cuttings and/or textile flap is impregnated with a solution of flame retardant composition based on formaldehyde its concentration in the solution of 150-155 g/l, with addition of urea at a concentration of 150-200 g/l in the solution. The impregnation is carried out at a closed turnover cycle of the impregnating agent by downloading the material into the horizontal centrifuge with turnover of not less than 1200 per minute. Then the working solution of flame retardant composition is fed, followed by settling and spinning the impregnated material to the residual moisture content of not more than 5%, and then the material is unloaded from the centrifuge and sent for cutting and fibre separation with spiked rollers. In the process of fibre separation, the flame retardant composition is additionally fed to the material through the nozzles. With poor capillarity of the textile wastes the water-soluble surfactant (Prevocell, Sulfosid) is added to the solution as a wetting agent at a concentration of 0.3-1 g/l in the solution.

EFFECT: method enables to obtain the fibre separated pulp from the textile wastes with reduced flammability for subsequent use in the production of nonwoven materials for automotive industry.

3 cl, 3 ex