ENZYMATIC METHOD OF FINAL SOFTENING OF LINEN DRESSING Russian patent published in 2009 - IPC D06M16/00 D06P5/02 C12S11/00 

FIELD: textile, cotton.

SUBSTANCE: invention relates to the textile industry in particular, to the technology of the final softening of the linen dressing. It describes the enlymatic method of final softening of the linen dressing that includes enzymatic procession of the linen by covering the straightened linen with the solution of multienzyme preparation with the indicator the enzyme activity, in un/ml: endopolygalacturonase - 15-40; α-L- arabinofuranosidase - 12-20; endoxylanase - 20-35; exoxylosidase - 0.7-1.5; pectinesterase - 1.5-7.5; exopolygalacturonase - 0.4-2.5; endogalactanase - 15-25; exogalactosidase - 0.8-1.7; exoglucanase - 1.0-1.9, with the addition of 15-30 g/l of sodium bicarbonate and complexon on the basis of aminopolycarboxylic acids at 40-50°C temperature, further holding of the linen during 30-40 min.; steam procession at 98-105°C during 5-7 min.; and procession at the needle carding machine to form the structure of the ready linen. Covering the linen with the solution of multienzyme preparation is made either by the method of fluid soaking with the additional weight after wringing for 95-100% or applying gas and fluid foam with the additional wet weight for 25-40%.

EFFECT: invention helps to add the softening napping effect to the linens, to increase the durability of the material and elasticity of the fabric; to decrease accumulation of irreversible deformation after its repeated stretching; to improve the ability to drape; to decrease general colour difference ΔE to the level of visually undefined deflections not exceeding 1,0 un.

3 cl, 2 dwg, 1 tbl, 4 ex