초록 ▼

The present invention concerns a manufactured article impervious to water, the water being rain water, water coming from a water-bearing stratum, and/or from concrete. The manufactured article of the invention may be used in building of habitations, factories, tunnels, and/or submarine structures an

The present invention concerns a manufactured article impervious to water, the water being rain water, water coming from a water-bearing stratum, and/or from concrete. The manufactured article of the invention may be used in building of habitations, factories, tunnels, and/or submarine structures and the like, the article comprising a leakproofing material. The manufactured article further includes a coating constituted by a film made of a material, the water-solubility of which is kept under control, the film delaying the leakproofing material hydration process for a predetermined period of time from between 1 and 30 days.

대표청구항 ▼

1. A manufactured article impervious to water, to be used in the building industry, comprising a water swellable bentonite layer, said water swellable bentonite layer is covered with a plastic film said plastic film being made of approximately 75% by weight polyvinylalcohol polymer mixed with approx

1. A manufactured article impervious to water, to be used in the building industry, comprising a water swellable bentonite layer, said water swellable bentonite layer is covered with a plastic film said plastic film being made of approximately 75% by weight polyvinylalcohol polymer mixed with approximately 25% by weight polyolic plasticisers and additives, wherein said polyolic plasticisers are aliphatic, high boiling point and are selected among those comprising natural or synthetic alcohols and/or alcohol ethers with three carbon atoms in their structures, at least two primary or secondary alcoholic functional groups, said plastic film being water soluble and taking a predetermined period of time to dissolve, said period of time being in the range between 1 and 30 days.