The present invention belongs to the technical field of board materials, and particularly relates to a weather-resistant composite floor and a preparation method thereof, and an artificial mineral floor and a preparation method thereof. The weather-resistant composite floor provided by the present invention sequentially includes a wear layer, an artificial mineral board and a back lay which are laminated and bonded with one another; the artificial mineral board includes modified mineral layers and fiberglass mesh layers which are alternately laminated; and the bottom and top layers of the artificial mineral board are the modified mineral layers. The wear layer and the back lay are respectively bonded to two opposite sides of the artificial mineral board. The weather-resistant composite floor provided by the present invention has high dimensional stability, and the deformation amount of it is maintained at a relatively small amplitude even in the presence of moisture or under an alternate cooling and heating condition, and thus is applicable in a wide range of areas.

There are provided a soundproof structure, which can have high soundproofing performance in a wide frequency band and in which visual recognition of through-hole can be suppressed, and a sound absorbing panel and a sound adjusting panel using the soundproof structure. A sheet member having a plurality of through-holes passing therethrough in a thickness direction and a sound absorbing body disposed in contact with one main surface of the sheet member are provided. An average opening diameter of the through-holes is 0.1 m or more and less than 100 m. Assuming that the average opening diameter of the through-holes is (m) and an average opening ratio is a parameter A expressed by A=+.sup.2 is 92 or less.

A method for the generation of a gas mixture comprising carbon monoxide, carbon dioxide and optionally hydrogen for use in hydroformylation plants or in carbonylation plants, including mixing an optional steam with carbon dioxide in the desired molar ratio, feeding the resulting gas to a solid oxide electrolysis cell (SOEC) or an SOEC stack at a sufficient temperature for the cell or cell stack to operate while effecting a partial conversion of carbon dioxide to carbon monoxide and optionally of steam to hydrogen, removing some or all the remaining steam from the raw product gas stream by cooling the raw product gas stream and separating the remaining product gas from a liquid, and using said gas mixture containing CO and CO.sub.2 for liquid phase synthesis reactions utilizing carbon monoxide as one of the reactants while recycling CO.sub.2 to the SOEC or SOEC stack.

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 m or more and 250 m or less and the foaming start temperature is set to 100 C. or more and 220 C. or less.

A floor, wall, or ceiling panel has a base made of a wood material and an upper veneer. The base and the veneer are hot-pressed together while incorporating a resin layer. During the pressing process, pores, cracks, and/or gaps in the veneer are filled with resin. In particular, the pressing process is carried out such that the veneer is saturated with resin, and the resin can be seen on the surface of the veneer after the pressing process The adhesion of the veneer to the base and the smoothing of the veneer are thus carried out in one operation.

A fire delaying wall panel is provided that comprises a layer of cellular cardboard, comprising cell spaces surrounded by cardboard, the layer of cellular cardboard comprising a paper sheet on a first surface of the layer of cellular cardboard. Preferably, inert grains that are inert in fire, such as perlite and/or vermiculite grains are provided, in the cell spaces. A layer of fire resistant adhesive is provided on the paper sheet. A layer of iron or glass netting or a fiber mat is embedded in the layer of fire resistant adhesive, the fire resistant adhesive covering the paper sheet in mazes of the iron netting.

Described is a method of making a densified fiber batt that includes the steps of: a) providing a fiber batt comprising a first plurality of fibers having a first melting point and a second plurality of fibers having a second melting point different from the first melting point; b) subjecting the fiber batt to heat, thereby producing a heated fiber batt; and c) after step b) subjecting the heated fiber batt to pressure in a static press, thereby forming a densified fiber batt having a first surface and an opposed second surface, wherein the densified fiber batt comprises at least 30% by weight of the first plurality of fibers being a plurality of multi-component fibers. Also disclosed is a layered composite article comprising such a fiber batt.

A method to produce a veneered element, the method including applying a first layer on a substrate, applying a second layer on a veneer layer, applying the veneer layer with the second layer applied thereto on the first layer, such that the second layer is facing the first layer, pressing the first layer, the second layer and the veneer layer together to form a veneered element, thereby material originating from the second layer permeates into the veneer layer, and wherein, after pressing, the first layer is visible through a crack, cavity, hole and/or knot of the veneer layer. Also, a veneered element.

A method to produce a veneered element, the method including applying a first layer on a substrate, applying a second layer on the first layer, applying a veneer layer on the second layer, pressing the first layer, the second layer and the veneer layer together to form a veneered element, wherein, after pressing, the second layer is transparent or translucent such that the first layer is visible through a crack, cavity, hole and/or knot of the veneer layer. Also, such a veneered element.

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.