The present invention aims to provide a sound-absorbing material having sound absorption performance with an average sound absorption coefficient of 0.65 or more in the frequency domain of 800 to 2000 Hz. The present invention relates to a sound-absorbing material including: a fiber layer including a plurality of holes open to a surface thereof and having a thickness of 3 mm or more; and an inorganic material layer formed on the surface of the fiber layer, the holes being blind holes each penetrating through the inorganic material layer and having a bottom inside the fiber layer.

The present disclosure provides a composite lift gate for a vehicle. The composite lift gate includes a polymer matrix and a fiber assembly. The fiber assembly is embedded in the polymer matrix. The fiber assembly includes a fiber mat and a plurality of substantially-aligned continuous fibers. The plurality of substantially-aligned continuous fibers is directly connected to a portion of the fiber mat. In one aspect, the composite lift gate further includes an electronic component connected to the fiber assembly. In various aspects, the present disclosure provides a method of manufacturing a composite lift gate for a vehicle.

A floor, wall or ceiling panel comprises a core and a decorative top layer provided on the core. The core comprises a magnesium oxide-based board material, and wherein the aforementioned panel, on at least two opposite edges, is provided with coupling means allowing that two of such panels can be interlocked at the respective edges.

A floor, wall or ceiling panel comprises a core and a decorative top layer provided on the core. The core comprises a magnesium oxide-based board material, and wherein the aforementioned panel, on at least two opposite edges, is provided with coupling means allowing that two of such panels can be interlocked at the respective edges.

A roof system comprising a roof substrate, a first membrane including first and second opposed planar surfaces, and a second membrane including opposed first and second planar surfaces, where said second membrane is adhered to said roof substrate through an adhesive disposed on said roof-substrate contacting portion of the first membrane, and where said second membrane is adhered to said first membrane through said adhesive disposed on a lap portion of said second membrane.

A buffer material is a material including a buffer sheet that contains cellulose fibers and a binding material binding the cellulose fibers and has a sheet shape, and a nonwoven fabric sheet that is provided on at least one surface side of the buffer sheet and is formed of nonwoven fabric, in which the cellulose fibers are aligned in a direction intersecting a thickness direction of the buffer sheet, and the alignment direction of the cellulose fibers is along a direction in which an external force is received.

A buffer material is a material including a buffer sheet that contains cellulose fibers and a binding material binding the cellulose fibers and has a sheet shape, and a nonwoven fabric sheet that is provided on at least one surface side of the buffer sheet and is formed of nonwoven fabric, in which the cellulose fibers are aligned in a direction intersecting a thickness direction of the buffer sheet, and the alignment direction of the cellulose fibers is along a direction in which an external force is received.

Described herein is a building panel and related building systems, the building panel having a first major surface opposite a second major surface, the building panel comprising a core comprising a first body comprising a first fibrous material; and a second body comprising a second fibrous material, a veneer facing layer coupled to the core, the veneer facing layer comprising a plurality of perforations.

A liftable roof for recreational vehicles includes a lower frame stably connectable to the upper surface of the recreational vehicle, handling structure connected to the lower frame, and an upper lid operatively connected to the handling structure. The handling structure is configured for moving the lid with respect to the frame between a first lowered position and a second raised position. The upper lid includes a single panel with a first resistant upper layer and a second layer made of thermo-insulating material fixed on a lower surface of the first upper layer.

A liftable roof for recreational vehicles includes a lower frame stably connectable to the upper surface of the recreational vehicle, handling structure connected to the lower frame, and an upper lid operatively connected to the handling structure. The handling structure is configured for moving the lid with respect to the frame between a first lowered position and a second raised position. The upper lid includes a single panel with a first resistant upper layer and a second layer made of thermo-insulating material fixed on a lower surface of the first upper layer.