FIELD: impenetrable materials and products made from them.
SUBSTANCE: an impenetrable material is claimed that contains at least a double layer of cloth material. The first layer of cloth consists of the first set of threads having 5,5 to 20 threads/cm, linear density of at least 210 dtex, and a component of the least 65 per cent of the cloth mass, and of the second set of threads having 0.5 to 16 threads/cm and a linear density of at least 50 dtex. The second layer of cloth consists of the first set of threads, having 0.5 to 16 threads/an and a linear density of at least 50 dtex, and of the second set of threads having 3.5 to 20 threads/cm, linear density of at least 210 dtex and a component of at least 65 per cent of the cloth mass. In the first and second layers the second set of threads is transverse one to the first set of threads, and the proportion of the quantity of threads/cm of the second set and the quantity of the first set exceeds 1. The first and second sets of threads of the first layer have of parallel orientation with respect to the first and second sets, respectively, of the threads of the second layer. In the first layer of cloth at least the first set of threads and in the second layer of cloth at the second set of threads of treated by a water-repellent substance.
EFFECT: reduced absorption of water of impenetrable material.
23 cl, 2 tbl, 2 ex
