A ceiling panel for use in a gridwork of a suspended ceiling is provided. The ceiling panel includes a layer of foam insulation. A first facing sheet is positioned on a lower major face of the layer of foam insulation and a second facing sheet is positioned on an upper major face of the layer of foam insulation. A surface covering layer is positioned on an exposed face of the first facing sheet.

The present invention relates to a cleaning article that includes a cleaning article that includes melamine-formaldehyde foam. The melamine-formaldehyde foam includes at least two sheets and has a density above 12 kg/m.sup.3. Each sheet is from about 0.5 to about 4 mm in thickness and the static COF between two sheets is greater than 6. Additionally the present invention encompasses processes for making and methods for cleaning hard surfaces with a cleaning article according to the present invention.

A base paper (6), a picture pattern layer (7) provided on a surface (6a) side of the base paper (6), and foaming agents (8) arranged on a surface (7a) of the picture pattern layer (7) or in the picture pattern layer (7) are provided. In the foaming agents (8), the average particle diameter after foaming is set to 15 μm or more and 250 μm or less and the foaming start temperature is set to 100° C. or more and 220° C. or less.

An object of the present invention is to provide a soundproof material having a practically useful high-level sound absorption coefficient that while maintaining thinness, and further having an expanded sound-absorbable frequency region. A means for solving the problem is a soundproof material comprising: a surface cover layer composed of a fiber material; a back-surface layer laminated onto the surface cover layer, and composed of a porous material with voids interconnected with each other; and a joining layer laminated between the surface cover layer and the back-surface layer, and composed of a joining material, wherein the fiber material has an average fiber diameter of 1 to 10 μm and an air-permeation volume of 5 to 200 cm.sup.3/cm.sup.2.Math.sec, and wherein the joining layer has a joint area percentage of 50 to 95% with respect to the entire surface where the surface cover layer and the back-surface layer face each other.

Disclosed are a holey plate, which improves the shape of punched holes so as to increase sound absorbing and insulating efficiency and durability, and a composite panel for sound absorption and sound insulation using the same. The holey plate used in the composite panel includes a base part, first bent parts configured to be bent from designated regions of the base part and to extend to be inclined so as to form a plurality of first punched holes by punching the designated regions of the base part in a thickness direction, and second bent parts configured to be bent from the first bent parts and to extend to be inclined so as to form second punched holes extending from the first punched holes, an angle of the second bent parts with the base part being smaller than an angle of the first bent parts with the base part.

Provided are wallboard panels that include a foam material layer and a core material, with one or more sheets of facer material and/or one or more sheets of backing material. The foam material layer may include one or more pores having an open pore geometry. Additionally, provided are methods of manufacturing such wallboard panels.

A microlattice structure may be used for a variety of different applications with a protective helmet assembly. The three-dimensional microlattice layer comprising a plurality of interconnected filaments extending along at least three different directions from a plurality of nodes. The microlattice layer may further comprise at least one material layer extending laterally between and interconnecting at least two or more nodes. The at least one material layer may be configured to transversely and rotationally constrain the nodes to increase the overall compressive strength and stiffness of the microlattice structure. The at least one material layer may comprise a single, continuous layer and/or a plurality of material layer segments. The microlattice layer may comprise a single, continuous layer or a plurality of microlattice layer segments. The microlattice layer may be stacked, the stacked microlattice layers may further comprise one or more material layers and/or one or more impact mitigation layers.

Embodiments of the present invention describe secured fiber-reinforced aerogels and laminate structures formed therefrom. In one embodiment a laminate comprises at least one fiber-reinforced aerogel layer adjacent to at least one layer of fiber containing material wherein fibers from said at least one fiber-reinforced aerogel layer are interlaced with fibers of said at least one fiber-containing material. In another embodiment a laminate comprises at least two adjacent fiber-reinforced aerogel layers wherein fibers from at least one fiber-reinforced aerogel layer are interlaced with fibers of an adjacent fiber-reinforced aerogel layer.

A method of producing a veneered element (10), including providing a substrate (1), applying a sub-layer (2) on a surface of the substrate (1), applying a veneer layer (3) on the sub-layer (2), and applying pressure to the veneer layer (3) and/or the substrate (1), such that at least a portion of the sub-layer (2) permeates through the veneer layer (3). Also, such a veneered element (10).

The present invention is concerned with moulding materials for use in the formation of composites and is particularly concerned with phenolic composites. More specifically, the present invention is concerned with phenolic resin materials which can be used without the need to add catalyst materials, and which therefore do not suffer as readily as known compositions from discolouration.