Dryer screen

A dryer screen comprising:

• plurality of machine direction threads, wherein the machine direction threads are warp threads having flat cross section,
• plurality of cross direction threads, wherein the cross direction threads are weft threads having substantially round cross section,
• and the weft threads being strongly shrinking threads,
• and said warp and weft threads forming a single-layer wire cloth wherein each warp thread in the wire cloth passes above two weft threads on the paper side of the cloth, below one weft thread on the machine side of the cloth and correspondingly onwards, and wherein the adjacent warp threads show a shift of one weft thread in the machine direction, each warp thread passing one weft thread in relation to the previous warp thread from a different point to the paper side of the cloth and correspondingly to the machine side,
• and wherein after weaving the paper side surface of the cloth shows empty spaces at the points where the warp threads pass below the weft thread,
• and wherein after the wire cloth is subjected to heat treatment each warp thread is, as a result of the strong shrinkage of the weft threads, overlapping in relation to the adjacent warp threads at said empty spaces on the paper surface.