A non-wicking underlayment board and methods for forming the same. The non-wicking underlayment board includes a foam core formed of closed cell foam with reinforcement layers encapsulated within the foam core. Outer facings formed of mineral coated nonwoven fibers are positioned on opposite faces of the non-wicking underlayment panel. The non-wicking underlayment board is useful for efficient and cost effective installation of barriers and surfaces in water-resistant and waterproof environments.

A backing layer (10) of a multilayer thermal insulation panel (100) for building constructions includes a glass fiber reinforcement layer (1) having a first surface (F1) and an opposite second surface (F2). The reinforcement layer is interposed between a first coating layer (2) attached to the first surface (F1) of the reinforcement layer and a second coating layer (3) attached to the second surface (F2) of the reinforcement layer (1). The first (2) and second (3) coating layers are manufactured by a mixture including an organic binder.

A backing layer (10) of a multilayer thermal insulation panel (100) for building constructions includes a glass fiber reinforcement layer (1) having a first surface (F1) and an opposite second surface (F2). The reinforcement layer is interposed between a first coating layer (2) attached to the first surface (F1) of the reinforcement layer and a second coating layer (3) attached to the second surface (F2) of the reinforcement layer (1). The first (2) and second (3) coating layers are manufactured by a mixture including an organic binder.

A composite article (30), comprising at least one fibrous layer (12), and at least one thermoplastic epoxy web layer (14) located in direct planar contact with the at least one fibrous layer (12), the at least one thermoplastic epoxy web layer (14) being adapted to substantially phase separate during a molding and/or curing process.

A composite article (30), comprising at least one fibrous layer (12), and at least one thermoplastic epoxy web layer (14) located in direct planar contact with the at least one fibrous layer (12), the at least one thermoplastic epoxy web layer (14) being adapted to substantially phase separate during a molding and/or curing process.

Thermoplastically moldable fiber reinforced planar semifinished products having a composite structure (A-B-A′) or (A-B) are produced by a method of applying to one or both sides of a flat, porous reinforcing-fiber thermoplastic material core layer precursor having an areal weight of 300 to 3,000 g/m.sup.2, a fiber content of 20 to 60 wt.-% and an air void content of 20 to 80 vol.-%, at least one woven or nonwoven reinforcing fiber fabric having an areal weight of 100 to 1,000 g/m.sup.2 and a thermoplastic layer having a low viscosity compared with the thermoplastic material of the core layer precursor and having an areal weight of 50 to 1,000 g/m.sup.2, and heating and pressing the layer structure formed such that the low viscosity thermoplastic layer is melted and penetrates into the applied woven or nonwoven reinforcing fiber fabric and into the core layer and, after cooling, forms an integral bond with the core layer and cover layer.

Thermoplastically moldable fiber reinforced planar semifinished products having a composite structure (A-B-A′) or (A-B) are produced by a method of applying to one or both sides of a flat, porous reinforcing-fiber thermoplastic material core layer precursor having an areal weight of 300 to 3,000 g/m.sup.2, a fiber content of 20 to 60 wt.-% and an air void content of 20 to 80 vol.-%, at least one woven or nonwoven reinforcing fiber fabric having an areal weight of 100 to 1,000 g/m.sup.2 and a thermoplastic layer having a low viscosity compared with the thermoplastic material of the core layer precursor and having an areal weight of 50 to 1,000 g/m.sup.2, and heating and pressing the layer structure formed such that the low viscosity thermoplastic layer is melted and penetrates into the applied woven or nonwoven reinforcing fiber fabric and into the core layer and, after cooling, forms an integral bond with the core layer and cover layer.

Methods, apparatuses, and systems for making prepregs are disclosed. A method may include depositing a resin material onto a surface of a fiber bed and forming a number of discrete resin regions thereon. A distance between the resin regions may be measured to provide desired exposed portions of the surface to facilitate permeation of air through the exposed portions of the surface in a direction perpendicular to a plane of the fiber bed during a curing process of the prepreg.

Provided is a composite laminate having excellent releasability from a mold during a production process, excellent surface appearance (surface smoothness) and mechano-physical properties, and excellent workability and coating adhesion. A composite laminate 1 includes an A layer 2 and a B layer 3, wherein the A layer 2 is provided directly or indirectly on one or both sides of the B layer 3, the A layer 2 contains reinforcing fibers (a1) with an average fiber length of 1 μm to 300 μm, spherical particles (a11) with a volume mean particle diameter of 0.01 μm to 100 μm, and a thermoplastic resin (a2), and the B layer 3 contains reinforcing fibers (b1) with an average fiber length of 1 mm or more and a thermoplastic resin (b2).

Provided is a multilayer composite that has flame retardancy and low smoking property as well as has high physical characteristics. The multilayer composite has a multilayer structure and includes at least one core layer and at least one skin layer, wherein the multilayer composite satisfies all the following conditions (A) to (D): (A) the core layer is a composite including discontinuous reinforcing fibers and a first thermoplastic resin, in which the discontinuous reinforcing fibers are randomly dispersed and bonded with the first thermoplastic resin at least at intersections of the discontinuous reinforcing fibers; (B) the skin layer is a composite including continuous reinforcing fibers and a second thermoplastic resin, in which the continuous reinforcing fibers are impregnated with the second thermoplastic resin; (C) each of the first and the second thermoplastic resins has a limiting oxygen index of 30 or higher; and (D) the first and the second thermoplastic resins are miscible with each other.