BUILDING BOARD

PROBLEM TO BE SOLVED: To reduce variations in the strength of a building board, and to prevent a waterproof layer and a lightweight cement layer from being cracked by drying or separated. SOLUTION: In the building board 1, the lightweight cement layers 5 are sequentially laminated on a base plate 2...

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Bibliographic Details
Main Author SHIMAMURA AKIRA
Format Patent
LanguageEnglish
Published 28.12.2006
Subjects
BUILDING
BUILDING MATERIALS
FIXED CONSTRUCTIONS
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
PERFORMING OPERATIONS
STRUCTURAL ELEMENTS
TRANSPORTING
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Summary:PROBLEM TO BE SOLVED: To reduce variations in the strength of a building board, and to prevent a waterproof layer and a lightweight cement layer from being cracked by drying or separated. SOLUTION: In the building board 1, the lightweight cement layers 5 are sequentially laminated on a base plate 2 via the waterproof layer 3. In the building board 1', an irregular layer (4), wherein irregularities are formed on a surface, and the lightweight cement layer 5 are sequentially laminated on a base plate 7 via the waterproof layer 3. In the building board 1 or 1', a fiberboard, wherein either of a rate of change in longitudinal water absorption length and a rate of change in width-direction water absorption length is 0.30% or less, is used as the base plate. Preferably, a medium density fiberboard (MDF), which is manufactured by a dry process, is used as the fiberboard. COPYRIGHT: (C)2007,JPO&INPIT
Bibliography:Application Number: JP20050173286