A fiber-reinforced resin composite sheet of the present invention contains: a polyamide resin film containing a dicarboxylic acid component (a) and a diamine component (b); and a plurality of reinforcing fibers laminated in a state of being oriented in the same direction on the polyamide resin film, the reinforcing fibers being obtained by opening a reinforcing fiber bundle. The dicarboxylic acid component (a) contains 60 mol % or more and 100 mol % or less of terephthalic acid. The diamine component (b) contains 60 mol % or more and 100 mol % or less of 1,9-nonanediamine and 2-methyl-1,8 octanediamine. The fiber-reinforced resin composite sheet has a volume content rate Vf of the reinforcing fibers of 20% or more and 70% or less and a thickness of 20 μm or more and 70 μm or less.

An object of the present invention is to provide a fiber-reinforced composite material achieving both lightweight properties and mechanical properties, a laminate thereof, and a prepreg capable of easily molding a sandwich structure thereof. The present invention is a prepreg comprising a reinforced fiber substrate (B) impregnated with a resin (A), wherein the reinforced fiber substrate (B) exists in a folded state having a plurality of folds with a fold angle of 0° or more and less than 90° in the prepreg.

The provided articles and methods use a non-woven fibrous web containing 60-100 wt % of oxidized polyacrylonitrile fibers; and 0-40 wt % of reinforcing fibers having outer surfaces comprised of a polymer with a melting temperature of from 100° C. to 300° C. The non-woven fibrous web has an average bulk density of from 15 kg/m.sup.3 to 50 kg/m.sup.3, with the plurality of fibers substantially entangled along directions perpendicular to a major surface of the non-woven fibrous web. Optionally, the oxidized polyacrylonitrile fibers can have a crimped configuration. Advantageously, these articles can display a combination of low thermal conductivity, high tensile strength, and flame resistance.

The provided articles and methods use a non-woven fibrous web containing 60-100 wt % of oxidized polyacrylonitrile fibers; and 0-40 wt % of reinforcing fibers having outer surfaces comprised of a polymer with a melting temperature of from 100° C. to 300° C. The non-woven fibrous web has an average bulk density of from 15 kg/m.sup.3 to 50 kg/m.sup.3, with the plurality of fibers substantially entangled along directions perpendicular to a major surface of the non-woven fibrous web. Optionally, the oxidized polyacrylonitrile fibers can have a crimped configuration. Advantageously, these articles can display a combination of low thermal conductivity, high tensile strength, and flame resistance.

An enclosure part for an information handling system is disclosed that may include materials formed together into a rectangular shape. The enclosure part may have a void on a core side and a flatness equal to or less than 0.5 mm. The materials may include a sheet of carbon fiber, a piece of non-woven carbon fiber, and a non-woven glass fiber. A method for manufacturing an enclosure part using through-plane temperature control may include inserting into a mold a sheet of carbon fiber and a piece of non-woven carbon fiber, heat pressing the sheet of carbon fiber with the piece of non-woven carbon fiber, and cooling a first portion of the mold including the sheet of carbon fiber and the piece of non-woven carbon fiber more quickly than a second portion of the mold including the sheet of carbon fiber, and removing the enclosure part from the mold.

A method for obtaining a heat-insulating and sound-absorbing composite product consisting in a fibrous material (MF) and in a polymeric material (MP) comprises the steps of positioning the fibrous material (MF) in a mould (1) equipped with a cavity that is only partially filled in a central zone thereof, overlapping polymeric material (MP) to the fibrous material (MF), approaching a counter-mould (3) provide with a counter-cavity (4) to the mould (1), expanding of the polymeric material (MP) by chemical reaction, forming the composite positioned between mold (1) and counter-mould (3), removing the counter-mould (3) from the mould (1) and extracting a product. After the step of forming the polymeric material (MP) covers the fibrous material (MF) in the central zone of the cavity and fills a peripheral groove (7) of the cavity of the mold (1). Further, a moulding equipment and the product so obtained are described.

A sound insulation material 1 includes a first layer 10 constituted by a polyurethane foam, a second layer 20 that is laminated on a surface of the first layer, the surface being located on a first side, and that is constituted by a sheet-shaped member made from a material other than polyurethane, and a third layer 30 that is laminated on a surface of the second layer, the surface being located on the first side, that is constituted by a polyurethane foam, and that, over its entirety, has a higher density than the density of at least a portion of the first layer.

Provided is a molded panel having at least one surface resembling a knit-like pattern, said panel comprising a plurality of stitches at least partially interconnected through connecting members wherein at locations where the stitch strand and the connecting member intersect they form together an integrated, solid molded material location and wherein the panel comprises through going apertures extending therethrough.

A serving tray comprised of at least one synthetic material and an insert which provides a non-slip top surface of the serving tray. The textured relief is preferably made of thermoplastic polyurethane (TPU) which allows a glass or other item to be placed on the serving tray without the item sliding or slipping while the tray is in motion. The tray may be fabricated through a compression or an injection molding technique. As the tray is being fabricated, the TPU is mechanically bonded with the top surface of the tray while a textured relief is simultaneously defined into the top surface. The textured relief includes a plurality of protrusions and a corresponding plurality of indentations which provide adequate frictional force to the item being placed on the tray so as to substantially prevent its lateral movement.

A serving tray comprised of at least one synthetic material and an insert which provides a non-slip top surface of the serving tray. The textured relief is preferably made of thermoplastic polyurethane (TPU) which allows a glass or other item to be placed on the serving tray without the item sliding or slipping while the tray is in motion. As the tray is being fabricated, the TPU is mechanically bonded with the top surface of the tray while a textured relief is simultaneously defined into the top surface. The textured relief provides adequate frictional force to an item being placed on the tray so as to substantially prevent its lateral movement. The tray also includes an inner support structure disposed on its inner surface. The inner support structure provides an upward facing edge which allows a plurality of trays to be easily and efficiently stacked or nested on one another.