COMPOSITE SHEET AND METHOD FOR MANUFACTURE OF COMPOSITE SHEET Russian patent published in 2003 - IPC

FIELD: production of composite materials used for wiping of surfaces. SUBSTANCE: composite sheet includes basic layer with upper and lower surfaces, and surface layer composed of continuous fibers extending lengthwise of sheet and connected with at least one of upper and lower surfaces by plurality of fastening lines extending in direction intersecting sheet longitudinal axis. Fastening lines include first plurality of fastening lines arranged in spaced relation in one half of surface layer positioned at one side of longitudinal axis, which divides surface layer crosswise into two halves, and second plurality of fastening lines arranged in spaced relation in other half of surface layer at other side of longitudinal axis. First and second pluralities of fastening lines are inclined with respect to longitudinal axis. Composite sheet of such structure may be used for wiping and removal of dust and other contamination from floor, window, wall or other surfaces. EFFECT: improved quality of composite sheet by uniform distribution of continuous fibers transverse to basic composite sheet. 18 cl, 10 dwg