Abstract: A process for the treatment of paper or cardboard surface is described that makes them impermeable to water, oil, and atmospheric gases, in particular oxygen. The invention also relates to the impermeable paper or cardboard thus obtained, which are particularly suitable for producing food product packaging or tableware.

Abstract: A machine for producing paper beverage stirring spoons or sticks, comprises: —a paper feeding station (2, 12), —a processing station (3, 4, 13, 14, 30) to die-cut the paper arriving from the feeding station (2, 12) and to make the spoons or sticks, —a station for removing spoons or sticks (5, 15), to remove and separate the spoons or sticks cut at the processing station (3, 4, 13, 14, 30) from the scrap, —a station for extracting the paper scrap (6, 16), to eliminate the residual scrap generated by the processing station (3, 4, 13, 14, 30), —a treatment station (7, 17), to apply a viscous liquid material based on silicon and hydroxy groups to the spoons or sticks, following the removal of the scrap (6, 16), to evenly coat the spoons or sticks, and—an oven (8, 18) to dry and crystallize the viscous liquid material and to realize the spoons or sticks.

Abstract: Photovoltaic panel (or solar panel) comprising: at least one luminescent solar concentrator (LSC) having an upper surface, a lower surface and one or more outer sides; at least one photovoltaic cell (or solar cell) placed on the outside of at least one of the outer sides or on the outside of at least one part of the lower surface of said luminescent solar concentrator (LSC); at least one rigid or semi-rigid support placed on the outside of said at least one photovoltaic cell (or solar cell), said at least one rigid or semi-rigid support being placed in direct contact with said at least one photovoltaic cell (or solar cell); at least one transparent frame placed outside said at least one rigid or semi-rigid support, said at least one transparent frame being placed in direct contact with said at least one rigid or semi-rigid support; optionally, at least one transparent protective shell placed between said at least one transparent frame and said at least one rigid or semi-rigid support, said at least one tra

Abstract: Photovoltaic panel (or solar panel) comprising: at least one luminescent solar concentrator (LSC) having an upper surface, a lower surface and one or more outer sides; at least one photovoltaic cell (or solar cell) placed on the outside of at least one of the outer sides or on the outside of at least one part of the lower surface of said luminescent solar concentrator (LSC); at least one rigid or semi-rigid support placed on the outside of said at least one photovoltaic cell (or solar cell), said at least one rigid or semi-rigid support being placed in direct contact with said at least one photovoltaic cell (or solar cell); at least one transparent frame placed outside said at least one rigid or semi-rigid support, said at least one transparent frame being placed in direct contact with said at least one rigid or semi-rigid support; optionally, at least one transparent protective shell placed between said at least one transparent frame and said at least one rigid or semi-rigid support, said at least one tra

Abstract: A sol-gel process for the manufacture of moulds for use in photocatalysis. The process also relates to industrial pultrusion, extrusion and moulding processes in which use of moulds manufactured using the sol-gel process. The process provides for the provision of a sol which is gelled, drying of the gel with solvent extraction and then densification/sintering of the gel by heating with the formation of a transparent mould having a glassy consistency which is capable of permitting the passage of UV rays.

Abstract: It is disclosed a process comprising the steps of making the first layer of a membrane with a first plastic material chemically compatible with the fluid to be treated, making a second layer of a second plastic material defining the mechanical performance of the membrane and coupling said layers, the process consisting in: inserting a first plastic material selected from polyolefines, polyamides, polyesters, vinyl resins into a moulding cavity (2) and injection-moulding at least one second plastic material defined by a thermoplastic elastomer (TPE) in said moulding cavity (2) to form at least one second layer (8) directly joined to the first layer (7).

Abstract: A ladder made of composite material comprises a plurality of rungs having an elongated body (19) provided with at least one connecting portion (3) adapted to engage an upright (4) of a ladder. Engagement means (5) locks the rung (2) to the upright (4); this means comprises a coupling element (6) made by co-moulding on the connecting portion (3) of the elongated body (19) or, alternatively, on the connecting seating (20) of the upright (4), a mechanical fastener (9) operatively acting in an installation housing (8) of the coupling element (6) and a locking element (10) adapted to prevent disengagement of the mechanical fastener (9).

Abstract: The equipment (1) comprises a die (2) having a section of varying sizes and corresponding to the longitudinal and sequential lengths of a tapering pole to be manufactured, a former (3) substantially corresponding to the longitudinal cavity of the tapering pole, drive means (4) for moving the former (3) in a longitudinal direction through the die (2) and devices (6) for winding fiber materials on the former (3) and impregnating said materials with resins, said devices being disposed upstream of the die (2) of variable section.