the press guide roll or web guide roll comprises a fiber - reinforced plastic roll tube and a wire layer wound on the surface of the roll tube in order to form substantially peripherally directed grooves . on either side of the roll middle , complementary sections of the windings are inclined slightly relative to the peripheral direction and thus form a wire layer which is mirror symmetrically disposed about the roll &# 39 ; s middle plane . the web guide roll therefore laterally guides and automatically centers the material web .