Abstract: A machine for shredding portions of bituminous material in the solid-state into granules in the solid-state. The machine comprises a pressing member provided with a piston which is axially mobile inside a perforated tubular body along an axis and is provided on the head thereof with an internal concave portion having a shape substantially complementary to a projecting part present in an axial end of the perforated tubular body. On the head of the piston through-openings are made, which extend radially along a direction approximately transversal to the axis and are in communication with the internal space of the concave portion.

Abstract: A machine for shredding portions of bituminous material in the solid-state into granules in the solid-state. The machine comprises a pressing member provided with a piston which is axially mobile inside a perforated tubular body along an axis and is provided on the head thereof with an internal concave portion having a shape substantially complementary to a projecting part present in an axial end of the perforated tubular body. On the head of the piston through-openings are made, which extend radially along a direction approximately transversal to the axis and are in communication with the internal space of the concave portion.

Abstract: A system to produce a bitumen-based membrane provided with a bituminous surface covered by grains. The system comprises a movement device designed to more a preformed membrane in a predefined feed direction, a grain application machine comprising a rotating application drum provided with a plurality of cavities which are designed to receive grains in a loading region of said drum, a grain loading device designed to load the grains in the cavities in the loading region of the drum, and a grain retention device made of sintered polymer material, which is arranged in contact with a retention region for retaining the outer surface of the application drum so as to maintain the grains in the cavities until the latter reach an angular discharge position.

Abstract: A roll transporting conveyor for transporting bituminous membrane rolls along a feeding direction. The roll transporting conveyor comprises: a support frame provided with two beams spaced apart from each other and parallel to said feeding direction; two driving belts arranged at the respective beams; a plurality of crossbars extending in a bridge-like manner between a driving belt and the other at a preset distance along said feeding direction and having the opposite axial ends integral to the driving belts; a plurality of belt-shaped transport portions, each of which extends between two consecutive crossbars and is sized to form a hammock-shaped transport cradle having an approximately semi-cylindrical shape for holding a roll between two consecutive crossbars.

Abstract: A roll transporting conveyor for transporting bituminous membrane rolls along a feeding direction. The roll transporting conveyor comprises: a support frame provided with two beams spaced apart from each other and parallel to said feeding direction; two driving belts arranged at the respective beams; a plurality of crossbars extending in a bridge-like manner between a driving belt and the other at a preset distance along said feeding direction and having the opposite axial ends integral to the driving belts; a plurality of belt-shaped transport portions, each of which extends between two consecutive crossbars and is sized to form a hammock-shaped transport cradle having an approximately semi-cylindrical shape for holding a roll between two consecutive crossbars.

Abstract: A system to produce a bitumen-based membrane provided with a bituminous surface covered by grains. The system comprises a movement device designed to more a preformed membrane in a predefined feed direction, a grain application machine comprising a rotating application drum provided with a plurality of cavities which are designed to receive grains in a loading region of said drum, a grain loading device designed to load the grains in the cavities in the loading region of the drum, and a grain retention device made of sintered polymer material, which is arranged in contact with a retention region for retaining the outer surface of the application drum so as to maintain the grains in the cavities until the latter reach an angular discharge position.

Abstract: Described herein is a machine (1) for shredding portions (30) of bituminous material in the solid state into recyclable granules (31) of small dimensions comprising a shredding unit (5), which in turn comprises a perforated tubular body (6), and a pressing member (7) for pushing the portions (30) into the perforated tubular body (6) in such a way as to force the bituminous material by compression to come out through the holes of the perforated tubular body (6) so as to obtain a plurality of substantially filiform extruded portions (33) of the bituminous material, and a cutting member (8) for cutting the extruded portions (33) coming out of the holes of the perforated tubular body (6) in such a way as to obtain the granules (31) of small dimensions.

Abstract: There is described a machine for homogenizing a bitumen-based mixture with polymer granules. The machine includes an outer container and a cylindrical sleeve, which is housed within the outer container and is provided with a perforated side wall, on which a plurality of through apertures is obtained, each of the holes comprising a sharp cutting edge. The machine further includes a homogenizer assembly, which is mounted so as to axially rotate within the sleeve in order to rotate about a vertical axis, and is configured so as to displace, during its rotation, at least part of the bitumen-based mixture and the polymer granules along a direction which is substantially tangential to the inner surface of the perforated side wall of the sleeve so as to induce the polymer granules to impact against the sharp cutting edge of the through apertures.

Abstract: A mixing machine adapted to mix a liquid mixture containing bitumen with solid granules so as to obtain a homogenized bituminous mix. The machine includes a cylindrical container arranged coaxially to a vertical axis and capable of containing the liquid mixture containing bitumen and the solid granules, a heating circuit for heating the inner side surface of the cylindrical container, a mixing assembly mounted axially rotatable within the container to rotate about the vertical axis, and a driving unit adapted to rotate the mixing assembly about the vertical axis. The mixing assembly includes a helicoidal blade which extends coaxial to the axis within the container and has its outer peripheral edge in contact with the inner surface of the container so as to scrape the material adhering on the inner surface during its rotation.

Abstract: A bituminous membrane production system having a cooling/finishing station designed to receive a bituminous strip made from at least one semisolid bituminous mix; feed the bituminous strip in a given travelling direction; and cool at least one of the two major surfaces of the bituminous strip as it moves forward; the cooling/finishing station having a strip cooling device, in turn having a cooling roller; a cooling fluid source for wetting the outer cooling surface of the cooling roller with cooling fluid; and rotation means for rotating the cooling roller, so that, as the cooling roller rotates, the cooling fluid on the outer cooling surface is brought into contact with one of the major surfaces of the bituminous strip.

Abstract: Described herein is a machine (1) for shredding portions (30) of bituminous material in the solid state into recyclable granules (31) of small dimensions comprising a shredding unit (5), which in turn comprises a perforated tubular body (6), and a pressing member (7) for pushing the portions (30) into the perforated tubular body (6) in such a way as to force the bituminous material by compression to come out through the holes of the perforated tubular body (6) so as to obtain a plurality of substantially filiform extruded portions (33) of the bituminous material, and a cutting member (8) for cutting the extruded portions (33) coming out of the holes of the perforated tubular body (6) in such a way as to obtain the granules (31) of small dimensions.

Abstract: There is described a machine for homogenizing a bitumen-based mixture with polymer granules. The machine includes an outer container and a cylindrical sleeve, which is housed within the outer container and is provided with a perforated side wall, on which a plurality of through apertures is obtained, each of the holes comprising a sharp cutting edge. The machine further includes a homogenizer assembly, which is mounted so as to axially rotate within the sleeve in order to rotate about a vertical axis, and is configured so as to displace, during its rotation, at least part of the bitumen-based mixture and the polymer granules along a direction which is substantially tangential to the inner surface of the perforated side wall of the sleeve so as to induce the polymer granules to impact against the sharp cutting edge of the through apertures.

Abstract: A mixing machine adapted to mix a liquid mixture containing bitumen with solid granules so as to obtain a homogenised bituminous mix. The machine comprising a cylindrical container arranged coaxially to a vertical axis and capable of containing the liquid mixture containing bitumen and the solid granules, a heating circuit for heating the inner side surface of the cylindrical container, a mixing assembly mounted axially rotatable within the container to rotate about the vertical axis, and a driving unit adapted to rotate the mixing assembly about the vertical axis. The mixing assembly comprises a helicoidal blade which extends coaxial to the axis within the container and has its outer peripheral edge in contact with the inner surface of the container so as to scrape the material adhering on the inner surface during its rotation.