A composite panel structure has opposing outer walls or surfaces and a core comprising a plurality of ribs extending between and connected to the outer walls and defining chambers which are filled with expanding foams, non-expanding foams, gases, or a combination thereof. The outer panel surfaces and internal chamber walls or ribs are made of woven or non-woven fibrous material impregnated with one or more resins. The panel structure may be used for making a variety of products including sports equipment such as sports paddles, surfboards, kite boards, skateboards, wakeboards, as well as construction panels for walls, ceilings or floors, display panels, panels for the vehicle industry, furniture, and other structures requiring high strength to weight properties.

A process for applying an anti-fragmentation system to manufactured articles made of natural stone or ceramic, and a respective manufactured article equipped with such an anti-fragmentation system, which is provided with at least one retaining member having an adhesive surface, and a manufactured article in the form of a slab and having a first, visible surface with a respective ornamental appearance, and a second, non-visible surface opposite to said first surface; the retaining member is associated with the manufactured article by joining the adhesive surface to said second surface.

A process for applying an anti-fragmentation system to manufactured articles made of natural stone or ceramic, and a respective manufactured article equipped with such an anti-fragmentation system, which is provided with at least one retaining member having an adhesive surface, and a manufactured article in the form of a slab and having a first, visible surface with a respective ornamental appearance, and a second, non-visible surface opposite to said first surface; the retaining member is associated with the manufactured article by joining the adhesive surface to said second surface.

A waterproof extrusion laminated flexible membrane that may be seamlessly applied to an irregularity on a substrate supporting a finished surface for waterproofing that includes first and second polypropylene non-woven layers each having first and second surfaces, a water impermeable HDPE oriented cross laminated film layer, a first tie layer between the first non-woven first surface and the cross laminated film layer, and a second tie layer between the second non-woven first surface and the cross laminated film layer. Other membranes and methods are also disclosed.

A waterproof extrusion laminated flexible membrane that may be seamlessly applied to an irregularity on a substrate supporting a finished surface for waterproofing that includes first and second polypropylene non-woven layers each having first and second surfaces, a water impermeable HDPE oriented cross laminated film layer, a first tie layer between the first non-woven first surface and the cross laminated film layer, and a second tie layer between the second non-woven first surface and the cross laminated film layer. Other membranes and methods are also disclosed.

A composite board comprising (i) a first foam region; (ii) at least one fragile insulating material; and (iii) a second foam region, where said second foam region is substantially devoid of hydrocarbons.

A composite board comprising (i) a first foam region; (ii) at least one fragile insulating material; and (iii) a second foam region, where said second foam region is substantially devoid of hydrocarbons.

In a method for producing a fiber-reinforced resin molded body (10) by heat-compressing fiber substrates (11A to 11D) together with a thermosetting resin (15) so that the thermosetting resin (15) is impregnated into the fiber substrates (11A to 11D) and cured, a thermosetting resin powder (15A) is disposed in contact with at least one surface of the fiber substrates (11A to 11D), the fiber substrates (11A to 11D) are heat-compressed together with the thermosetting resin powder (15A) by a mold (30) so that the thermosetting resin powder (15A) is melted, impregnated into the fiber substrates (11A to 11D), and cured. Also disclosed is a fiber-reinforced resin molded body as well as a vehicle or airframe including a fiber-reinforced resin molded body.

Multifunctional surfacing materials for use in composite structures are disclosed. According to one embodiment, the surfacing material includes (a) a stiffening layer, (b) a curable resin layer, (c) a conductive layer, and (d) a nonwoven layer, wherein the stiffening layer (a) and the nonwoven layer (d) are outermost layers, and the exposed surfaces of the outermost layers are substantially tack-free at room temperature (20° C. to 25° C.). The conductive layer may be interposed between the curable resin layer and the stiffening layer or embedded in the curable resin layer. According to another embodiment, the surfacing material includes a fluid barrier film between two curable resin layers. The surfacing materials may be in the form of a continuous or elongated tape that is suitable for automated placement.

A floor panel including at least one substrate and a top layer, where the substrate includes at least one first layer of a first thermoplastic material and a second layer of a second thermoplastic material. The second layer is adjacent to a first side of the first layer and the second layer provides the floor panel with its underside. The first layer is characterized by a first colour with saturation value S1 in the HSL colour space and the second layer is characterized by a second colour with saturation value S2 in the HSL colour space, where S1 is less than S2.