JP7197261B2 - 木質系セメント板及びその製造方法 - Google Patents
木質系セメント板及びその製造方法 Download PDFInfo
- Publication number
- JP7197261B2 JP7197261B2 JP2017192260A JP2017192260A JP7197261B2 JP 7197261 B2 JP7197261 B2 JP 7197261B2 JP 2017192260 A JP2017192260 A JP 2017192260A JP 2017192260 A JP2017192260 A JP 2017192260A JP 7197261 B2 JP7197261 B2 JP 7197261B2
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- JP
- Japan
- Prior art keywords
- raw material
- sieve sheet
- wood
- cement board
- edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/18—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements of organic plastics with or without reinforcements or filling materials or with an outer layer of organic plastics with or without reinforcements or filling materials; plastic tiles
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- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
- B28B1/525—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement containing organic fibres, e.g. wood fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
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- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
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- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
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- B28B1/526—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement by delivering the materials on a conveyor of the endless-belt type
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- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
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- B28B5/027—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type the shaped articles being of indefinite length the moulding surfaces being of the indefinite length type, e.g. belts, and being continuously fed
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- B32—LAYERED PRODUCTS
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/748—Releasability
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
- B32B2419/04—Tiles for floors or walls
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Description
そのため、凸部には、水硬性材料と無機混和材が付着した状態の植物系補強材が、水硬性材料と混和材の混合物中に均一に分布しており、凸部の第1側面部と第2側面部の植物系補強材の分布は略同じとなり耐久性に優れる。
図1は本発明の実施の形態1の壁材の製造方法を説明した模式図であり、図2は篩機を詳細に説明した図であり、図3は篩シートの上下振動と粉体原料の動きを説明した模式図である。
図5に実施の形態1により製造された壁材30の表面付近の断面図を示す。壁材30の表面には、型板4の凹凸により複数の凸部31Aが形成されている。凸部31Aは、第1側面部31A1と、第1側面部31A1に対応する第2側面部31A2と、第1側面部31A1と第2側面部31A2とを繋ぐ頂面部とを有する。第1側面部31A1の縁部が第1縁部31A11であり、第2側面部31A2の縁部が第2縁部31A21である。第1縁部31A11と第2縁部31A21は頂面部を挟んで対向している。
実施の形態2では、図1において、型板4が第2の篩シート2Bの縁部まで到達して図4で示す表面層5と芯層6の積層構造を形成したら、次に、走行装置20を逆走させ、型板4を逆方向に移動させて(X1’方向)さらに多層構造の壁材用マットを形成する。
実施の形態2により製造された壁材も、実施の形態1により製造された壁材30と同様に、表面には、型板4の凹凸により凸部が複数形成されている。凸部は、第1側面部と、第2側面部と、頂面部と、第1縁部と、第2縁部とを有する。
図7は実施の形態3の壁材の製造方法を説明した模式図である。
実施の形態3により製造された壁材も、実施の形態1により製造された壁材30と同様に、表面には、型板4の凹凸により凸部が複数形成されている。凸部は、第1側面部と、第2側面部と、頂面部と、第1縁部と、第2縁部とを有する。
図8は実施の形態4の壁材の製造方法を説明した模式図である。
実施の形態4により製造された壁材も、実施の形態1により製造された壁材30と同様に、表面には、型板4の凹凸により凸部が複数形成されている。凸部は、第1側面部と、第2側面部と、頂面部と、第1縁部と、第2縁部とを有する。
本発明者等は、効果確認を行った。実施例では、実施の形態4の壁材の製造方法を用いて、同条件で壁材を3体製造した(試料1~3)。一方、比較例では、図13に図示される、エアにて粉体原料を吹き飛ばして篩分けする装置を用いて、同条件で壁材を3体製造した(試料4~6)。
Claims (10)
- 水硬性材料、混和材、植物系補強材からなる粉体原料が堆積硬化した木質系セメント板であって、
前記粉体原料からなる表面層と、
前記表面層の一方の面に形成され、前記表面層を形成する前記粉体原料より大きな前記粉体原料を含む芯層と、
前記表面層の他方の面に複数突出して形成され、第1側面部、この第1側面部に対応する第2側面部、及び、前記第1側面部と第1縁部を介して接続すると共に、前記第2側面部と第2縁部を介して接続する頂面部からなる断面が台形形状の凸部と、を備え、
前記第1側面部における前記植物系補強材の分布と、
前記第2側面部における前記植物系補強材の分布と、が略同じであることにより、
前記粉体原料が堆積することなく形成された巣穴のサイズが0.5mm未満、0.5以上1.0mm未満及び1.0mm以上の巣穴について、その個数の分布が、前記第1縁部と前記第2縁部とで所定の範囲内にある
木質系セメント板。
- JIS A 5422に定められた筒法による前記第1縁部の減水高さと、前記第2縁部の減水高さは略同じである
ことを特徴とする請求項1記載の木質系セメント板。
- 前記凸部が形成された前記表面層の他方の面に塗料を塗布した場合におけるJIS A 1435に定められた気中凍結水中融解法による前記第1縁部及び前記第2縁部における塗膜の割れの数が略同じである
ことを特徴とする請求項1記載の木質系セメント板。
- 前記混和材は、石炭灰、マイカ、ワラストナイト、パーライト、樹脂ビーズの少なくとも1つである
ことを特徴とする請求項1記載の木質系セメント板。
- 前記粉体原料は前記木質系セメント板を粉砕した再利用原料を更に含み、前記粉体原料中の前記水硬性材料、前記混和材、前記植物系補強材及び前記再利用原料の比率は、30質量%、30質量%、15質量%及び25質量%である
ことを特徴とする請求項1記載の木質セメント板。
- 前記芯層の前記表層とは反対側の面に形成され、前記芯層を形成する前記粉体原料より大きな前記粉体原料を含む第2芯層と、
前記第2芯層の前記芯層とは反対の面に形成され、前記表面層を形成する前記粉体原料と同じ大きさの前記粉体原料を含む第2表面層と、を更に備える
請求項1記載の木質セメント板。
- 請求項1に記載の木質系セメント板を製造する製造方法であって、
型板を一定方向に移動させる走行装置と、
前記走行装置の上方で、前記型板の進行方向に対し下り傾斜し、
傾斜の上方側に細かい網目を有する第1篩シート、及び、傾斜の下方側に前記第1篩シートの網目より粗い網目を有する第2篩シートを有し、
前記第1篩シートと前記第2篩シートを振動させる第1篩機と、
前記第1篩シートの傾斜上側の上方に設けられた原料供給部と、
前記第1篩シートの前記網目から前記粉体原料を前記型板上に自重落下させ、前記表面層を形成する第1ステップと、
前記第1篩シートの前記網目を通過できなかった前記粉体原料を前記下方側の前記第2篩シート上に移動させ、前記第2篩シートの網目から前記表面層上に自重落下させ、前記芯層を形成する第2ステップと、
からなる木質系セメント板の製造方法。
- 請求項7の製造方法は、
前記第2篩シートの傾斜下側の上方に設けられた中央原料供給部を更に備え、
前記第2ステップは、前記第1篩シートの前記網目を通過できなかった前記粉体原料と共に前記中央原料供給部から供給された前記粉体原料を前記第2篩シートの網目から前記表面層上に自重落下させる、
木質系セメント板の製造方法。
- 請求項8の製造方法は、
前記型板の進行方向に前記第1篩機に隣接して配置された第2篩機を更に備え、
前記第2篩機は、前記型板の進行方向に対して上方に傾斜した篩シートを備える
木質系セメント板の製造方法。
- 請求項9の製造方法は、
前記第2篩機は、その傾斜の上方側に細かい網目を有する第3篩シート、及び、傾斜の下方側に前記第3篩シートの網目より粗い網目を有する第4篩シートを備え、
前記第3篩シートの傾斜上側の上方に別途の第2原料供給部を更に備え、
前記第3篩シートと前記第4篩シートを振動させ、
前記第3篩シートの前記網目を通過できなかった前記粉体原料を前記下方側の前記第4篩シート上に移動させ、前記第4篩シートの網目から前記芯層上に自重落下させ、別途の第2芯層を形成する第3ステップと、
前記第3篩シートの前記網目から前記粉体原料を前記第2芯層上に自重落下させ、第2表面層を形成する第4ステップと、
からなる木質系セメント板の製造方法。
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