BREATHING LIQUIDPROOF COMPOSITE MATERIAL Russian patent published in 2003 - IPC

FIELD: breathing liquidproof composite materials and methods of their production and laminated materials. SUBSTANCE: composite material includes preliminarily bound nonwoven cloth having binding pattern in form of binding points separated by intervals with nonbound threads or fibres between binding points, film connected to cloth in points corresponding to binding points and mainly practically nonbound with cloth. Material passes water steam at rate of about 100 g/sq.m/24h and with stands water hydrostatic head of t least, 50 mbar. Method of production of this material includes production of preliminarily bound nonwoven cloth having binding pattern in form of binding points separated by intervals and nonbound fibers or threads between them; production of breathing film; production of layer of amorphous polymer between cloth and film and binding of said cloth, amorphous polymer and film and binding of said cloth, amorphous polymer and film in said points of binding. Laminated material has film and nonwoven cloth bound by points, and film is highly bound to cloth in binding points. In this case, laminated material is characterized by parameters characterizing composite material. Materials may be used mainly as netted component of fasteners based on hooks and loops of VELKRO type for application in products beginning from fasteners for booths and ending in gloves for golf and for many other products in which desirable is nonconstant connection. EFFECT: provided higher comfort, protection and adjoining. 16 cl, 7 dwg