Abstract: An asphalt water-proofing material comprising a core impregnated with petroleum asphalt. The core is made of composite material including a non-woven fabric layer formed of long filaments of synthetic resin arranged in random fashion and a woven or knitted fabric layer. The non-woven fabric and woven or knitted fabric layers are connected together by needle-punching whereby the long filaments of the non-woven fabric layer are forced into the woven or knitted fabric layer to integrally connect these layers to form said core.

Abstract: A bulky asphalt-impregnated sheet comprising a base material of a bulky sheet of non-woven fabric which is uniformly and completely saturated with asphalt on the surface layers of the front and rear sides of said base material, said surface layers having of different properties from each other. A method and a system for manufacturing such bulky sheet comprises preparing the base material of non-woven fabric uniformly and completely saturated with asphalt, scraping off the asphalt from the surface of said base material and then applying a material of a different property onto the scraped surface.

Abstract: An asphalt roofing which comprises a base material of a bulky non-woven fabric made of filaments of synthetic fibres intertwined with each other and an asphalt with which said base material is uniformly and completely saturated and which also covers both sides of said base material. The non-woven fabric has a substantial thickness, such as 4-5mm, and is produced by the well-known needle-punching process. This base material is saturated with and covered by the single kind of asphalt. A method of making same comprises feeding said non-woven fabric along a vertical path into a bath of molten asphalt, thereby permitting the air contained within the fabric to successively escape vertically through the fabric itself into the atmosphere while permitting the fabric to be uniformly and completely saturated with said molten asphalt, and then withdrawing said fabric from the molten asphalt into the atmosphere and drying the same.