The present invention relates to a laminate including two or more layers of a composite layer including a fiber substrate and a cured product of a thermosetting resin composition, the two or more layers of the composite layer including one or more layer of a composite layer (X) and one or more layer of a composite layer (Y), the composite layer (X) being a layer including a first fiber substrate constituted by first glass fibers, the composite layer (Y) being a layer including a second fiber substrate constituted by second glass fibers, and the second glass fibers having a higher tensile elastic modulus at 25° C. than the first glass fibers, a printed wiring board including the laminate, a semiconductor package, and a method for producing a laminate.

A center pillar for a vehicle is provided and includes carbon-fiber-reinforced plastic (CFRP) and glass-fiber-reinforced plastic (GFRP) that are alternately laminated to reduce the weight of the center pillar and maintain the strength of the center pillar. The center pillar includes a base layer that is formed of CFRP; and laminate layers in which a plurality of layers of CFRP and a plurality of layers of GFRP are alternately disposed on a first surface and a second surface of the base layer individually. Accordingly, the CFRP and the GFRP laminated on the first surface of the base layer and the CFRP and the GFRP laminated on the second surface of the base layer are symmetrical to each other with respect to a thickness direction of the center pillar.

Provided are a silica glass yarn and a silica glass cloth which have a signal transmission speed that is made stable through stabilization of a characteristic impedance in addition to a low dielectric constant and a low loss. The silica glass yarn has a yarn habit density of 0.10 piece/cm or less of yarn habits each having a bending point with a radius of curvature of 5 mm or less and a bending angle of 120° or less. It is preferred that the silica glass yarn have a tensile strength of 2.0 GPa or more, and silica glass filaments forming the silica glass yarn each have a breaking start strength of 80.0% or more of the tensile strength of the silica glass yarn.

A composite includes a first layer of a first fluoropolymer; a second layer of at least one ply of a reinforcing fabric overlying the first layer; and a third layer of a second fluoropolymer overlying the second layer opposite to the first layer, wherein the first layer, the third layer, or combination thereof have an outer surface that is defect free; wherein the composite has a continuous length of at least about 3 meters. Embodiments of such composites can find applications, for example, as processing aids for an electronic device, a food, a polymer, insulating an electrical device, or heat sealing a polymer.

A composite includes a first layer of a first fluoropolymer; a second layer of at least one ply of a reinforcing fabric overlying the first layer; and a third layer of a second fluoropolymer overlying the second layer opposite to the first layer, wherein the first layer, the third layer, or combination thereof have an outer surface that is defect free; wherein the composite has a continuous length of at least about 3 meters. Embodiments of such composites can find applications, for example, as processing aids for an electronic device, a food, a polymer, insulating an electrical device, or heat sealing a polymer.

To provide a water/oil repellent layer-provided substrate having improved long-term reliability of abrasion resistance, and a method for producing it.

A water/oil repellent layer-provided substrate comprising a substrate, an undercoat layer formed on the surface of the substrate, and a water/oil repellent layer formed on the surface of the undercoat layer, in this order, wherein the alkali deficiency index is higher than 0.0, as determined by a depth profile obtained by X-ray photoelectron spectroscopy (XPS) by C.sub.60 ion sputtering from the side of the surface of the water/oil repellent layer, taking the total concentration of fluorine, silicon, aluminum, alkali metal elements and oxygen as 100 at %.

A repair patch is for a composite material to repair a part to be repaired which is a repair target of the composite material. The patch includes a patch main body that is formed by laminating a plurality of fiber reinforced preforms in a thickness direction, and has a bonding surface to be bonded to the part to be repaired; and a removal layer that is provided on the bonding surface to be peelable off from the patch main body. The bonding surface includes an inclined surface that is inclined with respect to the thickness direction of the patch main body. The removal layer includes a processed portion that causes the removal layer to have a shape complementary to a shape of the inclined surface of the patch main body

A composite includes a first layer of a first fluoropolymer; a second layer of at least one ply of a reinforcing fabric overlying the first layer; and a third layer of a second fluoropolymer overlying the second layer opposite to the first layer, wherein the first layer, the third layer, or combination thereof have an outer surface that is defect free; wherein the composite has a continuous length of at least about 3 meters. Embodiments of such composites can find applications, for example, as processing aids for an electronic device, a food, a polymer, insulating an electrical device, or heat sealing a polymer.

A composite includes a first layer of a first fluoropolymer; a second layer of at least one ply of a reinforcing fabric overlying the first layer; and a third layer of a second fluoropolymer overlying the second layer opposite to the first layer, wherein the first layer, the third layer, or combination thereof have an outer surface that is defect free; wherein the composite has a continuous length of at least about 3 meters. Embodiments of such composites can find applications, for example, as processing aids for an electronic device, a food, a polymer, insulating an electrical device, or heat sealing a polymer.

A lining plate having an outer decorative layer, a support layer having at least magnesium oxide or magnesium oxide with perlite and/or vermiculite and/or cellulose, a barrier membrane to reduce or avoid water and moisture intrusion, and a self-adhesive foam material layer with an adhesive surface to be placed on a surface to be lined, the layer being provided with a plurality of perforations. The support layer has a non-homogeneous density in its thickness, distinguishing a first thickness, following the decorative layer, and a second thickness, between the first thickness and the barrier membrane, in which the density in the first thickness is greater than the density in the second thickness. The support layer is provided with a reinforcing structure formed by meshes or by a fabric of a composite material located within the second thickness of the support layer.