Cement-based panel for raw finish, and method for manufacturing a cement-based panel for raw finish

Air blasting with precise abrasive grains addresses the challenge of achieving uniform color and maintaining strength in cement-based panels with complex surfaces by removing efflorescence, ensuring a smooth and consistent finish.

JP2026079096APending Publication Date: 2026-05-15NOZAWA CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
NOZAWA CORP
Filing Date
2024-10-30
Publication Date
2026-05-15

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Abstract

The present invention provides a cement-based panel for substrate finishing that, after removing efflorescence that occurs on the surface of the cement-based panel after curing, can exhibit a uniform material color without causing a decrease in physical properties, and a method for manufacturing the same. [Solution] The extruded cement board 1 has a substrate surface 1a from which the efflorescence layer 2 that occurs on the surface of the extruded cement board 1 after manufacturing and is weaker than the extruded cement board 1 has been removed, and the substrate surface 1a has the material color of the extruded cement board 1 expressed, the surface roughness (Ra) of this substrate surface 1a is 7.0 μm or less, and the difference between the minimum and maximum values ​​of the surface roughness (Ra) of the substrate surface 1a of the same substrate is 1.2 μm or less.
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