METHOD OF MANUFACTURING ADHESIVE PLASTER Russian patent published in 2000 - IPC

FIELD: medicinal industry. SUBSTANCE: adhesive plaster with uniform and homogeneous adhesive layer attached to substrate is manufactured as follows. Initial adhesive layer formulation contains rubber, zinc oxide, anhydrous lanolin, Vaseline oil, pin colophony, and rubber-aging retardant. Rubber and aging retardant are first mixed for 6 h with gasoline in 1:1 proportion to form homogeneous paste, after which colophony dissolved in gasoline in 1:3 proportion and other ingredients are added. Resulting mixture is stirred for 2-3 h to give homogeneous paste, which is diluted with gasoline to 30-60% gasoline content and dynamic viscosity of diluted mixture 10 to 550 m.kPa.s and laid on cloth. When applied on cotton and viscose cloth, mixture is diluted to 30-45% gasoline content and dynamic viscosity of diluted mixture 130 to 550 m. kPa. s and laid in amount 140+/- 20 g/sq.m. In case of silk and synthetic clothes, respectively: 46-60%, 10 to 129 m.kPa.s, and 80+/-20 g/sq.m. EFFECT: improved consumer's quality. 3 cl, 1 tbl