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Building material

A technology for building materials and building boards, applied in the field of building materials, can solve the problems of difficult peeling off of linings, undesired coating films, deterioration of physical properties of building materials, etc., and achieve the effects of not easy peeling off, excellent productivity, and suppressing variable costs.

Active Publication Date: 2014-03-12
NICHIHA CORP
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AI Technical Summary

Problems solved by technology

The intruded rainwater is absorbed by the end side of the building material, thereby deteriorating the physical properties of the building material, and spreading to the back side of the building material, and also adversely affecting members other than the building material
[0007] In order to prevent the lining from peeling off from the building material, it is sufficient as long as no coating film is formed on the side of the end of the building material. However, when the building material is painted, the paint applied to the surface tends to spread to the side of the end. , thereby forming an undesired coating film on the side of the end
[0008] In particular, when coating the surface of building materials by spraying or pouring coating, the coating tends to be easily applied to the sides of the ends, resulting in the formation of undesired coating films

Method used

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Embodiment 1

[0051] figure 1 It is an example of a building board showing a smooth surface. The building panel A1 has a painted surface and end sides without real parts by coating the surface with an atomizer, pour coater, glue roller, etc., in the process of coating the surface with paint. The paint is spread over the end sides, consisting of the paint-covered portion a1. In addition, although it is not shown in the figure, there is no real part on the end side of the back side, and the paint spreads, and consists of the part a1 covered with paint.

[0052] figure 2 It is a schematic diagram of the equipment that irradiates the side surfaces of both sides of the building panel with laser light. This equipment is installed in a post-process of performing a coating process on the surface of a building board.

[0053] By rotating the conveyor belt C, the building board A1 placed on the conveyor belt C is transported in the direction of the arrow, and a laser light source B is arranged a...

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Abstract

: The present invention provides a building material in which a coating is applied to a front surface and a side surface is sufficiently adhered to a sealing. In a building material in which a coating is applied to a front surface, a coating film on a side surface is removed or reduced by laser irradiation. The part of the side surface in which the coating film has been removed or reduced by laser irradiation has a width of at least 5 mm from a front surface side toward a rear surface side of the building material, or extends over the entire side surface from the front surface side toward the rear surface side of the building material.

Description

technical field [0001] The present invention relates to a building material. More specifically, it relates to a building material whose surface is painted and whose end side and sealing are excellent in adhesion. Background technique [0002] Generally, in building materials, coating is often applied to the surface or back of the substrate in order to suppress changes in physical properties due to water absorption, improve weather resistance, and improve appearance. [0003] Furthermore, a plurality of painted building materials are applied to an outer wall or an inner wall of a house to form a wall surface of the house. At this time, in order to join the vertically adjacent building materials and / or the left and right adjacent building materials to each other, a gap at a certain interval is provided between the adjacent building materials through a bonding material or a supporting material, and the gap is reduced. It is often filled with waterproof and flexible rubber-lik...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04F13/08
CPCE04C2/00E04F13/08E04F13/0862E04F13/0864E04F13/0889E04F13/0894
Inventor 川上诚泽田康司日比野芳则
Owner NICHIHA CORP
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