An object is to provide an inorganic board and a method for manufacturing the same that are suited to achieving high waterproofness.

A manufacturing method of the present invention includes first to sixth steps. The first step involves depositing a raw material on a receiving plate B1 to form a first layer L1. The second step involves pressing a first portion Ma and a second portion Mb of a raw material mat M including the first layer L1 toward the receiving plate B1 to compress the first portion Ma and the second portion Mb. The first portion Ma and the second portion Mb are one end portion and the other end portion, respectively, of the raw material mat M in a first direction D1. The third step involves depositing a raw material on the first layer L1 to form a second layer L2. The fourth step involves planarizing an exposed surface of the second layer L2. The fifth step involves curing the raw material mat M pressed between the receiving plate B1 and a pressing plate B2 to form a cured plate M′ from raw material mat M. The sixth step involves processing the first portion Ma and the second portion Mb into a first back-side joint part P1 and a first front-side joint part P2, respectively. An inorganic board X1 according to the present invention includes the first back-side joint part P1 and the first front-side joint part P2 that are high-density parts.

A sheet forming binder includes a first powder and a second powder having a larger volume average particle size than the first powder. The proportion of the first powder is 10.0% by mass or more relative to the total mass of the first powder and the second powder.

A roof tile containing fibers which satisfy the following requirements (1) to (3): (1) to have an average fiber diameter of 50 μm or less; (2) to have an aspect ratio of 50 to 2000; and (3) to have three or less buckled portions per fiber.

A roof tile containing fibers which satisfy the following requirements (1) to (3): (1) to have an average fiber diameter of 50 μm or less; (2) to have an aspect ratio of 50 to 2000; and (3) to have three or less buckled portions per fiber.

A method of preparing a ceramic fabric for use in a ceramic matrix composite includes transforming a ceramic tow from a first tow geometry to a second tow geometry, thereby reducing a first dimension of the ceramic tow and increasing a second dimension of the ceramic tow orthogonal to the first dimension to produce a flattened tow. The method includes weaving or braiding the flattened ceramic tow to form a ceramic fabric.

A sintering-free inorganic ceramic brick-plate and its preparation method are disclosed. The sintering-free inorganic ceramic brick-plate includes following components by mass parts: 25-40 parts of magnesium oxide; 20-35 parts of magnesium chloride; 20-30 parts of fumed silica; 10-20 parts straw powders; 0.1-0.3 parts of graphene powders with a particle size of 2000 meshes; and 0.2-0.4 parts of airgel powders with a particle size of 100 nm. Compared with the prior art, the present invention utilizes a variety of raw natural non-toxic natural mineral raw materials, namely, the graphene powders with the particle size of 2000 meshes and the airgel powders with the particle size of 100 nm for mixing, and then the mixed raw materials can be solidified at room temperature and form sheets, and then the surface of the sheets is processed through printing or spraying glaze, so as to achieve the effect of high-grade tiles and natural marble.

A sintering-free inorganic ceramic brick-plate and its preparation method are disclosed. The sintering-free inorganic ceramic brick-plate includes following components by mass parts: 25-40 parts of magnesium oxide; 20-35 parts of magnesium chloride; 20-30 parts of fumed silica; 10-20 parts straw powders; 0.1-0.3 parts of graphene powders with a particle size of 2000 meshes; and 0.2-0.4 parts of airgel powders with a particle size of 100 nm. Compared with the prior art, the present invention utilizes a variety of raw natural non-toxic natural mineral raw materials, namely, the graphene powders with the particle size of 2000 meshes and the airgel powders with the particle size of 100 nm for mixing, and then the mixed raw materials can be solidified at room temperature and form sheets, and then the surface of the sheets is processed through printing or spraying glaze, so as to achieve the effect of high-grade tiles and natural marble.

Machine and method for compacting a powder material; the machine comprises a compacting device, which is designed to compact the powder material; a conveyor assembly to transport the powder material along a first portion of a given path to the compacting device; and a feeding assembly, which is designed to feed the powder material to the conveyor assembly and comprises a transfer chamber designed to hold and transfer the powder material; movable elements are present at a wall of the transfer chamber.

A distributor device (1) for distributing a mix (L) in one or more forming supports (S) for manufacturing articles made of composite stone material. The device (1) comprises mix supply means (10) designed to transport the mix (L) along a longitudinal feeding direction (X) towards the forming supports (S). The distribution device (1) further comprises mix lamination means (16) located between the supply means (10) and the supports (S). The invention also relates to a method and a plant for manufacturing articles made of composite stone material which use the aforementioned distributor device (1).

Process for the production of a hydrophobic thermal-insulation moulding, where a hydrophilic thermal-insulation moulding is brought into contact with a hydrophobizing agent in vapour form with formation of a thermal-insulation moulding coated with hydrophobizing agent, and this is then subjected to a press process and during the press process and/or after the press process is reacted with the hydrophobizing agent with formation of the hydrophobic thermal-insulation moulding, where a) the density of the hydrophobic thermal-insulation moulding after the press process and after the reaction with the hydrophobizing agent is from 100 to 250 kg/m.sup.3, and b) the density of the hydrophilic thermal-insulation moulding on contact with the hydrophobizing agent is from 50% to less than 100% of the density of the hydrophobic thermal-insulation moulding.