A method for providing bituminous backings for the construction industry, includes the following steps obtaining a semi-finished product having a reinforcement to which a bituminous layer is applied, on the outer surface of which inert materials are or are not distributed and/or inside which the inert materials are embedded. The method also includes annealing the semi-finished product, directly following the step of bituminization of the reinforcement or after the step of applying bitumen to the reinforcement so as to embed the inert materials in the bituminous layer, while at the same time drying the outer surface.

A fiber mat includes an assembly of fibers including a minority portion including a set of polymer fibers and a majority portion including a set of fibers different than the minority portion, wherein the minority portion is a plane parallel to a plane of the majority portion of the assembly of fibers; and a binder including an organic resin, wherein an air permeability of said fiber mat is not substantially different from an equivalent weight fiber mat containing a homogenous mat structure and wherein the fiber mat provides at least a 5% increase in tear when placed in a bituminous roofing product compared to an equivalent bituminous roofing product made with the equivalent weight fiber mat containing the homogenous mat structure.

A method for preparing a bituminous roofing article, the method comprising: (i) applying a fluorine-containing compound to a plurality of granules; (ii) depositing the plurality of granules on an asphaltic substrate; where the fluorine-containing compound is defined by the formula (V) or (VI):

##STR00001## wherein r and q are independently integers of 1 to 3; R.sub.f is linear or branched chain perfluoroalkyl group having 1 to 6 carbon atoms; j is an integer 0 or 1, or a mixture thereof, x is 1 or 2, X is hydrogen or M, and M is an ammonium ion, an alkali metal ion, or an alkanolammonium ion; and (iii) applying a silicone oil to the surface of the granules.

A carrier material includes at least a first thermoplastic fiber layer and a second thermoplastic fiber layer. At least a part of the first thermoplastic fiber layer and/or the second thermoplastic fiber layer at at least one boundary of the carrier material is removed, to provide a first part of a form-fit connection. The carrier material can be used in bituminous roofing membranes, roofing underlayment sheets, carriers for filter media, primary backings for tufted carpets and (cushion) vinyl floor coverings.

The present invention relates to a self-adhesive waterproof coiled material of a super-strong cross laminated film, comprising sequentially from top to bottom: an isolation protection layer, a non-asphalt-based self-adhesive layer, a strong cross laminated film, an asphalt self-adhesive layer and a PE isolation film. One side of the upper surface of the coiled material is provided with an overlap edge, and the other side of the lower surface of the coiled material is also provided with an overlap edge. The waterproof coiled material provided in the present invention has better adhesive property with post-cast concrete than an asphalt-based coiled material, and can be better bonded to a main body structure (i.e., pre-paving anti-sticking coiled material); the strong cross laminated film in the middle of the coiled material has good ductility, so that when the base layer slightly subsides or the main body structure is slightly deformed, the coiled material can continue to be well bonded to the main body structure and would not be separated; and a good waterproof effect thus can be achieved.