Elastic band-shaped base, specially track-bed matting

A track bed matting comprising an elastic band-shaped base (1, 1′) made of rubber or rubber-like material for insulating and absorbing vibrations and impact sound, wherein the matting is equipped with tubes (2, 3, 6, 7) arranged with spacings between each other and having a substantially semicircular, semi-oval or semi-ellipsoidal cross section, whereby

• a portion of the tubes (2, 3) comprises a first plane (I) and a second plane (II) arranged with a spacing A relative to each other, forming a continuous intermediate covering (5) extending parallel with the ground side (4) of the matting (1, 1′), the tubes (2, 3) of said two planes (I, II) being arranged displaced against one another with a spacing C, forming a substantially symmetric lattice structure, whereby the spacing C of the displacement amounts to about half of the spacing E from the center of one tube to the center of the other tube within one plane (I, II);
• wherein
• all flattened sides of the tubes (2, 3) of the first plane (I) and the second plane (II) face the intermediate covering (5);
• and that
• another portion of the tubes (6, 7) comprises a third plane (III) arranged in a space A′ from the next-disposed second plane (II), forming a continuous intermediate covering (8), extending parallel with the ground side (4) of the base (1′), whereby the tubes (6, 7) of the third plane (III) each are disposed directly above the tubes (3) of the next-disposed second plane (II).