| 摘要 |
<p>The invention relates to an elongate tubular product having the same cross section along its entire length and comprising a solid tube (1) consisting of at least one plastic material which is both sufficiently flexible to be wound and unwound and sufficiently rigid to resist to a centripetal or centrifugal radial force, said tube having on the inner side and/or the outer side, a surface layer (3) whose free surface (2) constitutes the friction surface, said surface layer (3) comprising a plastic matrix wherein a lubricant is dispersed, a synergistic effect being produced between a solid lubricant as particles (4) distributed in the plastic matrix on the one hand, said particles (4) being, at least in part, at the same level with the free surface (2) of the surface layer (3), and a liquid-type lubricant compatible with the plastic matrix and dispersed in said surface layer (3) without effectively wetting the free surface thereof, on the other hand.</p> |
