Nichiha Corp.

Kazuhisa Yoshida

Hidenori Nishioka

Akihiro Sugimoto

Hiroki Norita

A building material manufacturing apparatus includes a sieve portionand a receiverthat receives a building raw material M that has passed through the meshes of the sieve portion. The sieve portionincludes a series of sheets that are each capable of performing a wave motion when the apparatus is operating, that have an inclination, and that are arranged in a direction of the inclination. The series of sheets include a sieve sheetand a sieve sheetpositioned below the sieve sheet. In the sieve sheet, meshes having an identical size are arranged at a regular pitch in a sheet width direction W. In the sieve sheet, meshes having two or more different sizes are arranged or a mesh region Rand a non-mesh region Rare arranged, in the sheet width direction W. The receiveris movable below the series of sheets. The building material manufacturing method includes, by using the apparatus, forming a mat on the receiver, the mat including a first layer formed from a part of the building raw material M that has passed through the meshes of the sieve sheetand a second layer formed from a part of the building raw material M that has passed through the meshes of the sieve sheet

Building material manufacturing apparatus and building material manufacturing method

[Object] To provide a building material having excellent durability. [Solution] A building material has a convex part formed on a surface thereof, the convex part including a first lateral surface part and a second lateral surface part corresponding to the first lateral surface part. The building material is formed from a mixture containing a hydraulic material, an admixture, and a plant-based reinforcing material, and the plant-based reinforcing material at least in the convex part is distributed in the mixture with the hydraulic material and the admixture attached to the plant-based reinforcing material. A distribution of the plant-based reinforcing material in the first lateral surface part and a distribution of the plant-based reinforcing material in the second lateral surface part are substantially the same. Desirably, the convex part includes a first edge part that is an edge part of the first lateral surface part and a second edge part that is an edge part of the second lateral surface part and that corresponds to the first edge part, and a distribution of holes formed in the first edge part and a distribution of holes formed in the second edge part are substantially the same.

Method for manufacturing building material

Provided is a building material manufacturing apparatus and a building material manufacturing method that are suitable for efficiently manufacturing a building material while suppressing clogging of a sieve portion for sieving the building raw material. The building material manufacturing apparatus of the present invention includes, for example, a sieve portionand a receiving tool. The sieve portionincludes a receiving and sending sheetwith no sieve openings, onto which the building raw material M is dropped, and at least one sieve sheetwith sieve openings that is located below the sheet. The receiving and sending sheetand the sieve sheetcan perform undulating motion, are inclined, and are arranged side by side in the inclination direction. The receiving toolis for receiving the building raw material M that has passed through the sieve openings of the sieve portion. In the building material manufacturing method of the present invention, for example, in a state in which the receiving and sending sheetand the at least one sieve sheetare performing undulating motion, the building raw material M is dropped onto the receiving and sending sheet, moved from the receiving and sending sheetonto the sieve sheet, subjected to sieving by the sieve sheet, and the portion that passes through the sieve openings of the sieve sheetis accumulated on the receiving tool, whereby a mat with at least one layer is formed.

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Nagoya, Japan

Kazuhisa Yoshida