RESILIENT IMPREGNATING NONWOVEN MOULDED WEB Russian patent published in 2014 - IPC D04H1/42 

FIELD: process engineering.

SUBSTANCE: fibres blown from the melt can make up to 45-99 wt % of the web while impregnating material can make 1-55 wt % of the web. Said fibres can be composed of thermoplastic composition including at least one copolymer of propylene and α-olefin, their ratio making 60-99.5 wt % of propylene and 0.5-40 wt % of α-olefin. Said copolymer can feature density of 0.86-0.90 grams per cubic centimetre while said composition can feature melt fluidity rate of 200-6000 g in 10 minutes measured at 230°C in compliance with ASTM Test Method D1238-E. Moulded web can be 3D-shaped with the help of, for example, 3D-forming surface. For example, this web can be used as a core of sanitary towel.

EFFECT: nonwoven web with matrix of fibres blown from the melt and impregnator.

20 cl, 8 dwg