Geomaterial web with biological degradation properties

A geomaterial web, comprising:

• a first organic structural material and a second structural material that is different from the first structural material and that is bonded to the first structural material to form a sheet-like composite material web extending in two mutually perpendicular directions;
• wherein the first structural material and the second structural material are organic, fibrous non-woven materials;
• wherein the first structural material is a plastic material, and wherein:
• the first and the second structural material have a first and a second biodegradability, respectively, to the extent that:
• in a composting test with the following parameters:
• samples with a length of 10 cm, a width of 10 cm and an original material thickness,
• 50° C.+/−5° C.,
• thermophilic conditions according to ISO 16929:2018-04 (modified only according to the temperature range set forth above),
• sieving of solids after six months in a sieve with 2 mm mesh (mesh 8.75), and
• when sieving, less than 80 wt. % dry matter of the an initial dry matter of the starting material remains in the sieve;
• or
• in a marine incubation test with the following parameters:
• samples with a length of 2 cm, a width of 2 cm and an original material thickness,
• 30° C.+/−2° C.,
• aerobic conditions in seawater with a salinity of 3.5 wt. %+/−1 wt. %,
• sieving of solids after twelve weeks in a sieve with 2 mm mesh (mesh 8.75), and
• when sieving after twelve weeks, less than 80 wt. % dry matter of a dry matter of the starting material remains in the sieve;
• and
• the second structural material has a second biodegradability which is different from the first biodegradability.