Plastic non-wax ski base and methods for its manufacture

A no wax ski base comprising a matrix of plastic material having embedded therein elongated particles of a material harder than said plastic material, said matrix and particles defining a composite material having areas of varying hardness, said particles being angularly oriented within said matrix, said particles having longitudinal dimensions of a minimum size sufficient to ensure that said particles in interaction with said matrix form a three-dimensional gliding surface of the ski base, said gliding surface having a direction-dependent friction coefficient when said gliding surface is subjected to wear including a pretreated involving grinding said gliding surface in a direction from the front end thereof to the back and thereof, said longitudinal dimensions of said particles being of a maximum size less than the thickness of the ski base, and said particles forming mutually offset and spaced harder areas throughout said thickness, such that said areas become gradually exposed during wear of the ski base, thereby providing an effective configuration of friction coefficient of said gliding surface during the entire service of the ski base such that said gliding surface provides good gliding properties in the ski forward direction with good grip properties in the backward direction of the ski.