JP5548340B2 - Manufacturing method of wood cement board - Google Patents

Manufacturing method of wood cement board Download PDF

Info

Publication number
JP5548340B2
JP5548340B2 JP2008092317A JP2008092317A JP5548340B2 JP 5548340 B2 JP5548340 B2 JP 5548340B2 JP 2008092317 A JP2008092317 A JP 2008092317A JP 2008092317 A JP2008092317 A JP 2008092317A JP 5548340 B2 JP5548340 B2 JP 5548340B2
Authority
JP
Japan
Prior art keywords
mat
cement board
raw material
wood cement
material mixture
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.)
Active
Application number
JP2008092317A
Other languages
Japanese (ja)
Other versions
JP2009242189A (en
Inventor
裕司 山崎
真也 樋口
芳則 日比野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nichiha Corp
Original Assignee
Nichiha Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nichiha Corp filed Critical Nichiha Corp
Priority to JP2008092317A priority Critical patent/JP5548340B2/en
Priority to RU2008144474/03A priority patent/RU2392401C1/en
Priority to TW101121318A priority patent/TWI382910B/en
Priority to TW097145934A priority patent/TW200940298A/en
Priority to CA2647661A priority patent/CA2647661C/en
Priority to AU2008264147A priority patent/AU2008264147B2/en
Priority to DE102008055110.4A priority patent/DE102008055110B4/en
Priority to CN2008101907082A priority patent/CN101550743B/en
Priority to US12/351,035 priority patent/US20090242728A1/en
Publication of JP2009242189A publication Critical patent/JP2009242189A/en
Priority to KR1020110098156A priority patent/KR20110111276A/en
Application granted granted Critical
Publication of JP5548340B2 publication Critical patent/JP5548340B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/044—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of concrete
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/32—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material
    • E04C2/324—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material with incisions or reliefs in the surface
    • 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
    • B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
    • B28B1/16—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted for producing layered articles
    • 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
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • 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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/18—Waste materials; Refuse organic
    • C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Civil Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Laminated Bodies (AREA)

Description

本発明は、表面に凹凸意匠面を有する木質セメント板に関するものであり、より詳しくは、表面に鋭角で深い凹凸意匠面を有し、かつ、硬化養生工程、乾燥工程や運搬工程においてクラックが発生しにくい木質セメント板に関するものである。   The present invention relates to a wood cement board having an uneven design surface on its surface, and more specifically, has an acute and deep uneven design surface on its surface, and cracks are generated in the curing curing process, the drying process and the transport process. It is related to a wooden cement board that is difficult to perform.

木質セメント板は、水硬性材料と、ケイ酸含有物質と、木質補強材と、所望によってその他の材料を配合した原料混合物を用いてマットを形成し、該マットをプレスして、硬化養生することにより製造されている。そして、該木質セメント板は、外壁材やタイルの下地材等の住宅用部材として広く使用されており、外壁材用の木質セメント板の表面には、外観性を向上させるため、レンガ柄、目地溝など凹凸による様々な意匠が施されている。
近年では、更なる表面意匠性の向上のため、鋭角で深い凹凸が求められている。
また、タイルの下地材として使用する木質セメント板では、タイルを留め付けるために、表面に鋭角で深い凹凸固定部を設ける必要がある。 A wood cement board is formed by using a raw material mixture containing a hydraulic material, a silicic acid-containing substance, a wood reinforcing material, and other materials as required, and presses the mat to cure and harden it. It is manufactured by. The wooden cement board is widely used as a housing member such as an outer wall material or a tile base material. The surface of the wooden cement board for the outer wall material has a brick pattern, a Various designs with unevenness such as grabens are given.
In recent years, acute and deep irregularities are required for further improving the surface design.
Moreover, in the wooden cement board used as a base material of a tile, in order to fasten a tile, it is necessary to provide a deep uneven | corrugated fixing | fixed part with an acute angle on the surface.

木質セメント板の表面に凹凸を形成する方法としては、プレス前の半硬化状態のマットの表面に、凹凸パターンを刻設させたエンボスロールを加圧しながら回転させて所望の凹凸パターンを表面にエンボス形成する方法や、硬化養生後の木質セメント板の表面を切削加工して凹凸パターンを形成させる方法や、凹凸パターンを有する型板をプレス前のマットの表面に載置し、該マットと型板を共にプレスする方法がある。   As a method of forming irregularities on the surface of the wood cement board, the embossed roll is embossed on the surface by rotating an embossing roll engraved with an irregular pattern on the surface of a semi-cured mat before pressing. A method of forming, a method of forming a concave / convex pattern by cutting the surface of a wood cement plate after curing and curing, and a template having a concave / convex pattern placed on the surface of the mat before pressing, the mat and the template There is a method of pressing together.

しかし、エンボスロールを用いる方法では、鋭角で深い凹凸形状を形成しにくい。
木質セメント板の表面を切削加工する方法では、切削工程が必要となり、設備費用や時間がかかり、生産効率は悪い。また、切削工程において、切削不良による不良品が発生しやすい。
型板を用いる方法では、鋭角で深い凹凸形状を形成できるものの、型板を載置するマットは厚みが略均一で、表面が略平面であるので、凹部は比重が高くなり、凸部は比重が低くなる。この凹部と凸部の比重差により、硬化養生工程、乾燥工程や運搬工程において、木質セメント板にクラックが発生しやすくなり、塗装工程において、木質セメント板の基材内に塗料が吸い込まれる。その結果、木質セメント板の強度、耐水性、耐凍性、耐候性などが大幅に低下し、多くの塗料が必要となるし、塗装状態が不均一になるという問題がある。 However, with the method using an embossing roll, it is difficult to form a deep uneven shape with an acute angle.
In the method of cutting the surface of the wood cement board, a cutting process is required, equipment costs and time are required, and production efficiency is poor. In addition, in the cutting process, defective products are likely to be generated due to defective cutting.
Although the method using a template can form an acute angle and deep concavo-convex shape, the mat on which the template is placed has a substantially uniform thickness and the surface is substantially flat, so that the concave portion has a high specific gravity and the convex portion has a specific gravity. Becomes lower. Due to the difference in specific gravity between the concave and convex portions, cracks are likely to occur in the wooden cement board in the curing and curing process, drying process and transporting process, and the paint is sucked into the base material of the wooden cement board in the painting process. As a result, the strength, water resistance, freezing resistance, weather resistance and the like of the wood cement board are greatly reduced, and many paints are required, and the coating state becomes uneven.

この改善策として、所定個所に複数枚の仕切板を配置して原料混合物を撒布することによりマット層を形成した後、該仕切板に存在する原料混合物を除去することにより所定箇所に凹部を有するマットを形成し、このようにして形成したマット上から凹部形成部に対応する凸部を形成した上側型板をプレスし硬化養生する方法がある（特許文献１）。
特開２００１−１５０４２１号公報 As an improvement measure, after forming a mat layer by arranging a plurality of partition plates at predetermined locations and distributing the raw material mixture, the raw material mixture present on the partition plates is removed to have a recess at a predetermined location. There is a method of forming a mat and pressing and curing and curing an upper mold plate on which a convex portion corresponding to a concave portion forming portion is formed from the mat thus formed (Patent Document 1).
JP 2001-150421 A

しかし、特許文献１の方法では、仕切板を配置する作業と、更に該仕切板を撤去する作業とが必要であり、生産効率が悪い。
また、凹部の深さ、幅、長さにより様々な仕切板を用意する必要があるので初期費用がかかり、凹部を多数有する意匠や様々な形状の凹部を有する意匠の場合は作業が複雑になり、更に生産効率が悪くなる。
更に、凹部が木質セメント板の表面を縦断するような長い形状、もしくは幅が広い形状の場合にも、作業性が悪くなり、生産効率が悪い。
更に、仕切板を撤去した後のマット層は地崩れしやすく、凸部と凹部の比重差を０．１より小さくすることは困難であり、硬化養生工程、乾燥工程や運搬工程において、木質セメント板にクラックが発生しやすくなり、塗装工程において、木質セメント板の基材内に塗料が吸い込まれ、木質セメント板の強度、耐水性、耐凍性、耐候性などが大幅に低下し、多くの塗料が必要となるし、塗装状態が不均一になるという問題は解決されない。 However, the method of Patent Document 1 requires an operation of arranging the partition plate and an operation of removing the partition plate, resulting in poor production efficiency.
In addition, since it is necessary to prepare various partition plates depending on the depth, width, and length of the recesses, initial costs are incurred, and the design becomes complicated in the case of designs having many recesses or designs having various shapes. Further, the production efficiency is deteriorated.
Furthermore, when the recess has a long shape or a wide shape that cuts the surface of the wood cement board, the workability is poor and the production efficiency is poor.
Furthermore, the mat layer after removing the partition plate is easy to collapse, and it is difficult to make the difference in specific gravity between the convex part and the concave part smaller than 0.1. In the curing curing process, the drying process and the transporting process, the wood cement Cracks tend to occur in the board, and the paint is sucked into the base material of the wood cement board in the painting process, and the strength, water resistance, freezing resistance, weather resistance, etc. of the wood cement board are greatly reduced, and many paints And the problem that the coating state becomes uneven cannot be solved.

本発明は、上記問題点を解決するためになされたものであり、表面に鋭角で深い凹凸意匠面を有し、かつ、硬化養生工程、乾燥工程や運搬工程においてクラックが発生しにくい木質セメント板を提供することを目的としている。   The present invention has been made in order to solve the above-mentioned problems, and has a sharp and uneven design surface on the surface, and a wooden cement board that is hard to generate cracks in the curing and curing process, the drying process, and the transport process. The purpose is to provide.

上記目的を達成するために、本請求項１に記載の発明は、表面に凹凸意匠面を有し、水硬性材料と、ケイ酸含有物質と、木質補強材とからなる木質セメント板であり、該木質セメント板の凸部の頂点から裏面までの長さは９mm以上であり、該凸部の頂点から凹部の底点までの長さは、２mm以上かつ該凸部の頂点から該裏面までの長さの半分以下であり、該木質セメント板の全体の平均比重、及び、該凸部、該凹部の比重がそれぞれ１．１以上であり、該凸部の比重と該凹部の比重の差が０．１より小さいことを特徴とする木質セメント板である。なお、凸部の頂点とは、凸部において最も高い箇所を示し、凹部の底点とは、凹部において最も低い箇所を示す。   In order to achieve the above object, the invention according to claim 1 is a wood cement board having an uneven design surface on the surface, and comprising a hydraulic material, a silicic acid-containing substance, and a wood reinforcing material, The length from the top of the convex portion of the wood cement board to the back surface is 9 mm or more, and the length from the top of the convex portion to the bottom point of the concave portion is 2 mm or more and from the top of the convex portion to the back surface. Less than half the length, the average specific gravity of the whole wood cement board, and the specific gravity of the convex part and the concave part are each 1.1 or more, and the difference between the specific gravity of the convex part and the specific gravity of the concave part is It is a wood cement board characterized by being smaller than 0.1. In addition, the vertex of a convex part shows the highest location in a convex part, and the bottom point of a recessed part shows the lowest place in a recessed part.

本発明の木質セメント板は、該木質セメント板の凸部形成部に対応する凹部を形成した型板を搬送させながら、該型板の上に原料混合物を散布してマットを形成する工程と、該マットの原料混合物で、該型板の凹部に積層した部分の原料混合物のみに上側から加圧する工程と、一部加圧されたマットの表面を均しくする工程と、得られたマットと該型板とをプレスし、硬化養生する工程と、からなる木質セメント板の製造方法などにより製造することができる。硬化養生としては、５０〜８０℃で６〜１２時間硬化養生した後、自然養生又はオートクレーブ養生を行う方法がある。なお、該自然養生は、外気で３〜１４日間養生する方法であり、該オートクレーブ養生は、１６０〜２００℃、５〜８kgf/cm２で５〜１０時間養生する方法である。該製造方法では、型板の凹部に積層された原料混合物の質量は、該型板の凸部に積層された原料混合物の質量よりも多くなる。すなわち、木質セメント板の凸部形成部分の原料混合物の質量は、凹部形成部分の質量よりも多くなる。それにより、マットを均一にプレスできるので、プレス後のマットの凸部と凹部の比重は高くなり、１．１以上になると共に、該凸部と該凹部の比重差が小さくなる。 The wood cement board of the present invention is a process of forming a mat by spraying a raw material mixture on the mold plate while transporting a template having recesses corresponding to the projection forming parts of the wood cement plate, Pressurizing only the portion of the raw material mixture of the mat laminated on the concave portion of the template from above, the step of leveling the surface of the partially pressurized mat, the mat obtained and the It can be manufactured by a method of manufacturing a wood cement board, which includes a step of pressing a template and curing and curing. As curing curing, there is a method of performing natural curing or autoclave curing after curing curing at 50 to 80 ° C. for 6 to 12 hours. The natural curing is a method of curing for 3 to 14 days in the outside air, and the autoclave curing is a method of curing at 160 to 200 ° C. and 5 to 8 kgf / cm 2 for 5 to 10 hours. In the manufacturing method, the mass of the raw material mixture laminated on the concave portion of the template is larger than the mass of the raw material mixture laminated on the convex portion of the template. That is, the mass of the raw material mixture in the convex portion forming portion of the wood cement board is larger than the mass of the concave portion forming portion. As a result, the mat can be pressed uniformly, so that the specific gravity between the convex portion and the concave portion of the mat after pressing becomes high and becomes 1.1 or more, and the specific gravity difference between the convex portion and the concave portion becomes small.

本発明の水硬性材料は、ポルトランドセメント、高炉セメント、シリカセメント、フライアッシュセメント、アルミナセメント等のセメント類であり、ケイ酸含有物質は、ケイ砂、ケイ石の粉末、シリカヒューム、高炉スラグ、フライアッシュ、シラスバルーン、パーライト等であり、木質補強材は、木粉、木質繊維、パルプ、木質繊維束、木毛、木片、竹繊維、麻繊維等である。
上記原料以外にも、二水石膏、半水石膏、無水石膏、消石灰、生石灰等の活性石灰含有物質や、塩化マグネシウム、蟻酸カルシウム、硫酸マグネシウム、塩化カルシウム、硫酸カルシウム、アルミン酸ナトリウム、アルミン酸カリウム、硫酸アルミニウム、水ガラス等の硬化促進剤、バーミキュライト、ベントナイト、ワラストナイト、アタパルジャイト等の鉱物粉末、ワックス、パラフィン、シリコン等の撥水剤、合成樹脂エマルジョン等の補強材、発泡性熱可塑性プラスチックビーズ、プラスチック発泡体等が原料として含有されていてもよい。 The hydraulic material of the present invention is a cement such as Portland cement, blast furnace cement, silica cement, fly ash cement, alumina cement, and the silicic acid-containing material is silica sand, silica stone powder, silica fume, blast furnace slag, Fly ash, shirasu balloon, pearlite, and the like, and the wood reinforcing material is wood powder, wood fiber, pulp, wood fiber bundle, wood wool, wood piece, bamboo fiber, hemp fiber, and the like.
In addition to the above raw materials, active lime containing substances such as dihydrate gypsum, hemihydrate gypsum, anhydrous gypsum, slaked lime, quick lime, magnesium chloride, calcium formate, magnesium sulfate, calcium chloride, calcium sulfate, sodium aluminate, potassium aluminate , Hardening accelerators such as aluminum sulfate and water glass, mineral powders such as vermiculite, bentonite, wollastonite and attapulgite, water repellents such as wax, paraffin and silicon, reinforcing materials such as synthetic resin emulsions, foaming thermoplastics Beads, plastic foams and the like may be contained as raw materials.

上記原料の混合比率は、水硬性材料が３５〜７０質量％、ケイ酸含有物質が０〜６０質量％、木質補強材が５〜３０質量％である。   The mixing ratio of the raw materials is 35 to 70 mass% for the hydraulic material, 0 to 60 mass% for the silicic acid-containing substance, and 5 to 30 mass% for the wood reinforcing material.

本発明では、木質セメント板の凸部の頂点から裏面までの長さは９mm以上であるので、強度に優れると共に、硬化養生工程、乾燥工程や運搬工程においてクラックが発生しにくい。木質セメント板の凸部の頂点から裏面までの長さは９mmより小さいと、強度が不十分であり、硬化養生工程、乾燥工程や運搬工程においてクラックが発生しやすく、運搬の際に該木質セメント板が破損することもある。
また、本発明では、木質セメント板の凸部の頂点から凹部の底点までの長さは、２mm以上かつ該凸部の頂点から裏面までの長さの半分以下なので、凹凸形状は鋭角で深く、意匠性に優れる。タイルを留め付ける場合には、タイルが外れにくくなる。凸部の頂点から凹部の底点までの長さが２mmより小さいと、凹凸形状は鋭角で深くないので、意匠性が十分でない。凸部の頂点から凹部の底点までの長さが、凸部の頂点から裏面までの長さの半分より大きいと、強度が弱くなり、かつ、硬化養生工程、乾燥工程や運搬工程においてクラックが発生しやすくなるので、運搬の際に該木質セメント板が破損することもある。
また、木質セメント板の全体の平均比重、及び、凸部、凹部の比重がそれぞれ１．１以上であり、該凸部の比重と該凹部の比重の差が０．１より小さいので、硬化養生工程、乾燥工程や運搬工程において、木質セメント板へのクラックの発生が防ぐことができ、かつ、塗装工程において、基材への塗料の吸い込みが改善される。その結果、木質セメント板製品の強度、耐水性、耐凍性、耐候性が低下する、多くの塗料が必要になる、塗装が不均一になるという問題を防ぐことができる。加えて、仮にプレス能力がそれ程大きくなくても生産が可能となるという副次的効果も奏する。 In this invention, since the length from the vertex of the convex part of a wooden cement board to a back surface is 9 mm or more, while being excellent in an intensity | strength, a crack is hard to generate | occur | produce in a hardening curing process, a drying process, and a conveyance process. If the length from the top of the convex part of the wood cement board to the back surface is less than 9 mm, the strength is insufficient, and cracks are likely to occur in the curing and curing process, the drying process and the transportation process. The plate may be damaged.
In the present invention, the length from the top of the convex portion of the wood cement board to the bottom point of the concave portion is 2 mm or more and less than half the length from the top of the convex portion to the back surface. Excellent design. When the tile is fastened, it becomes difficult to remove the tile. If the length from the top of the convex portion to the bottom point of the concave portion is less than 2 mm, the uneven shape is acute and not deep, so the design is not sufficient. If the length from the top of the convex part to the bottom point of the concave part is greater than half the length from the top of the convex part to the back surface, the strength will be weak, and cracks will occur in the curing, curing, drying and transporting processes. Since it becomes easy to generate | occur | produce, this wooden cement board may be damaged in the case of conveyance.
Further, the average specific gravity of the whole wood cement board and the specific gravity of the convex part and the concave part are each 1.1 or more, and the difference between the specific gravity of the convex part and the concave part is smaller than 0.1. In the process, the drying process, and the transport process, the generation of cracks in the wood cement board can be prevented, and the suction of the paint into the base material is improved in the painting process. As a result, the strength, water resistance, freezing resistance, and weather resistance of the wood cement board product can be prevented, many coatings are required, and the problem of uneven coating can be prevented. In addition, there is a secondary effect that production is possible even if the press capacity is not so large.

本請求項２に記載の発明は、請求項１に記載の木質セメント板であり、該木質セメント板は、表層と芯層からなり、該表層と該芯層の原料混合物の組成は異なり、該表層は該芯層よりも緻密構造であることを特徴とする木質セメント板である。   The invention according to claim 2 is the wood cement board according to claim 1, wherein the wood cement board is composed of a surface layer and a core layer, and the composition of the raw material mixture of the surface layer and the core layer is different. The surface layer is a wood cement board characterized by a denser structure than the core layer.

本発明の木質セメント板は、該木質セメント板の凸部形成部に対応する凹部を形成した型板を搬送させながら、該型板の上に表層用原料混合物を散布して表層マットを形成する工程と、該表層マットの上に芯層用原料混合物を散布して芯層マットを形成する工程と、該芯層マットと表層マットの原料混合物で、該型板の凹部に積層した部分の原料混合物のみに上側から加圧する工程と、一部加圧された該芯層マットの表面を均しくする工程と、表面が均しくされた芯層マットの上に更に該表層用原料混合物を散布して表層マットを形成する工程と、得られた三層構造のマットと該型板とをプレスし、硬化養生する工程と、からなる木質セメント板の製造方法などにより製造することができる。該製造方法では、型板の凹部に積層された原料混合物の質量は、該型板の凸部に積層された原料混合物の質量よりも多くなる。すなわち、木質セメント板の凸部形成部分の原料混合物の質量は、凹部形成部分の質量よりも多くなる。それにより、マットを均一にプレスできるので、プレス後のマットの凸部と凹部の比重は高くなると共に、該凸部と該凹部の比重差が小さくなる。   The wood cement board of the present invention forms a surface layer mat by spraying a raw material mixture for the surface layer on the template while transporting the template formed with recesses corresponding to the projection forming part of the wood cement board. A step of forming a core layer mat by spraying a raw material mixture for the core layer on the surface mat, and a raw material of a portion of the core layer mat and the surface layer mat stacked in the concave portion of the template A step of pressing only the mixture from above, a step of leveling the surface of the partially pressurized core layer mat, and further spraying the raw material mixture for the surface layer onto the core layer mat having a uniform surface. Thus, it can be produced by a method for producing a wood cement board comprising a step of forming a surface mat, a step of pressing the obtained three-layer structure mat and the template, and curing and curing. In the manufacturing method, the mass of the raw material mixture laminated on the concave portion of the template is larger than the mass of the raw material mixture laminated on the convex portion of the template. That is, the mass of the raw material mixture in the convex portion forming portion of the wood cement board is larger than the mass of the concave portion forming portion. Thereby, since the mat can be pressed uniformly, the specific gravity between the convex portion and the concave portion of the mat after pressing becomes high, and the specific gravity difference between the convex portion and the concave portion becomes small.

なお、表層と芯層とはどちらも水硬性材料と、ケイ酸含有物質と、木質補強材とからなるが、原料混合物の組成は異なる。表層は、微細原料を含有する緻密な構造であり、水硬性材料が３５〜７０質量％、ケイ酸含有物質が０〜５０質量％、木質補強材が５〜２５質量％であり、木質セメント板の強度や耐水性を向上させる。一方、芯層は、粗原料による組成であり、水硬性材料が３０〜６０質量％、ケイ酸含有物質が０〜６０質量％、木質補強材が１０〜３０質量％であり、木質セメント板を軽量とする。表層：芯層の配合比率は質量比で１：１〜１：６、望ましくは１：１〜１：４であり、芯層は表層よりも層を厚くすることが好ましい。   Both the surface layer and the core layer are composed of a hydraulic material, a silicic acid-containing substance, and a wood reinforcing material, but the composition of the raw material mixture is different. The surface layer has a dense structure containing fine raw materials, the hydraulic material is 35 to 70% by mass, the silicic acid-containing substance is 0 to 50% by mass, the wood reinforcing material is 5 to 25% by mass, and the wood cement board Improves strength and water resistance. On the other hand, the core layer is composed of a raw material, the hydraulic material is 30 to 60% by mass, the silicic acid-containing substance is 0 to 60% by mass, the wood reinforcing material is 10 to 30% by mass, Light weight. The compounding ratio of the surface layer: core layer is 1: 1 to 1: 6, preferably 1: 1 to 1: 4, and the core layer is preferably thicker than the surface layer.

本発明においても、硬化養生工程、乾燥工程や運搬工程において、木質セメント板へのクラックの発生が防ぐことができ、かつ、塗装工程において、基材への塗料の吸い込みが改善される。更に、表層により、強度、耐水性、耐凍性、耐候性を維持するとともに、多くの塗料が必要になる、塗装が不均一になるという問題を防ぐことができる。加えて、仮にプレス能力がそれ程大きくなくても生産が可能となるという副次的効果も奏する。   Also in this invention, generation | occurrence | production of the crack to a wood cement board can be prevented in a hardening curing process, a drying process, and a conveyance process, and inhalation of the coating material to a base material is improved in a painting process. Furthermore, the surface layer can maintain the strength, water resistance, frost resistance, and weather resistance, and can prevent the problem that a lot of paint is required and the coating is not uniform. In addition, there is a secondary effect that production is possible even if the press capacity is not so large.

本発明の木質セメント板によれば、該木質セメント板の凸部の頂点から裏面までの長さは９mm以上であり、該凸部の頂点から凹部の底点までの長さは、２mm以上かつ該凸部の頂点から該裏面までの長さの半分以下であり、該木質セメント板の全体の平均比重、及び、凸部、凹部の比重がそれぞれ１．１以上であり、該凹部と該凸部の比重の差が０．１より小さいので、強度が十分であると共に、硬化養生工程、乾燥工程や運搬工程において発生する恐れのある、木質セメント板へのクラックの発生を防ぐことができ、かつ、塗装工程において、基材への塗料の吸い込みが改善される。その結果、木質セメント板製品の強度、耐水性、耐凍性、耐候性が低下したり、多くの塗料が必要になったり、塗装が不均一になるという問題も防ぐことができる。また、木質セメント板の凸部の頂点から凹部の底点までの長さは、２mm以上かつ該凸部の頂点から裏面までの長さの半分以下なので、凹凸形状は鋭角で深く、意匠性に優れる。タイルを留め付ける場合には、タイルが外れにくくなる。   According to the wood cement board of the present invention, the length from the top of the convex part to the back surface of the wood cement board is 9 mm or more, and the length from the top of the convex part to the bottom point of the concave part is 2 mm or more and Less than half the length from the apex of the convex part to the back surface, the average specific gravity of the whole wood cement board, and the specific gravity of the convex part and the concave part are each 1.1 or more, the concave part and the convex part Since the difference in specific gravity of the part is less than 0.1, the strength is sufficient, and it is possible to prevent the occurrence of cracks in the wood cement board that may occur in the curing and curing process, the drying process and the transportation process, In addition, in the coating process, the suction of the paint into the substrate is improved. As a result, the strength, water resistance, frost resistance, and weather resistance of the wood cement board product can be prevented, and many problems such as the need for many paints and uneven coating can be prevented. In addition, the length from the top of the convex part of the wood cement board to the bottom of the concave part is 2 mm or more and less than half the length from the top of the convex part to the back surface. Excellent. When the tile is fastened, it becomes difficult to remove the tile.

以下、本発明を実施するための最良の形態について、図１〜図６に従って具体的に説明する。   Hereinafter, the best mode for carrying out the present invention will be specifically described with reference to FIGS.

図１は、表面に凸部Ａ１を有する木質セメント板Ａの一例を示した図である。凸部Ａ１は、ここでは木質セメント板Ａの表面を長手方向に一直線状に５本形成されている。   FIG. 1 is a view showing an example of a wood cement board A having a convex portion A1 on the surface. Here, five convex portions A1 are formed in a straight line in the longitudinal direction on the surface of the wood cement board A.

図２は、図１に示す木質セメント板Ａを製造するために使用される装置であって、木質セメント板Ａを成形するためのマット原料の一部を回転加圧する装置Ｂの一例を示した図である。装置Ｂは、回転軸Ｂ１と、その周囲に形成された複数のロール部Ｂ２とを備えており、マットを搬送するコンベアの上方で、かつ、該マットの進行方向に対して直交する方向に配置される。回転軸Ｂ１が回転することにより、ロール部Ｂ２が上記マットの原料の必要箇所に加圧接触し、該マットを加圧することができる。なお、ロール部Ｂ２は、動作位置、及び高さが調整可能である。また、本装置Ｂはラインから脱着することが可能であり、製造する木質セメント板の凹部のパターンに対応するよう配置、調整したロール部Ｂ２を備えた装置Ｂを用意しておき、製造する木質セメント板の凹部のパターンにあわせて取り替えられるようにしておけば、作業性良く、木質セメント板の生産効率を低下させない。   FIG. 2 shows an example of an apparatus B that is used to manufacture the wood cement board A shown in FIG. 1 and that rotationally presses a part of the mat raw material for forming the wood cement board A. FIG. The apparatus B includes a rotation shaft B1 and a plurality of roll portions B2 formed around the rotation shaft B1, and is arranged above a conveyor that conveys the mat and in a direction orthogonal to the traveling direction of the mat. Is done. By rotating the rotation shaft B1, the roll part B2 can be brought into pressure contact with the necessary portion of the raw material of the mat to pressurize the mat. In addition, as for roll part B2, an operation position and height can be adjusted. Further, the apparatus B can be detached from the line, and an apparatus B having a roll part B2 arranged and adjusted so as to correspond to the concave pattern of the wood cement board to be produced is prepared, and the wood to be produced. If it is possible to replace it according to the concave pattern of the cement board, the workability is good and the production efficiency of the wood cement board is not reduced.

図３は、図１に示す木質セメント板Ａを製造するための製造工程の流れの一例を、各工程において製造されるマットの状態によって示した模式図である。
図３に示す製造工程では、配合を異にする、表層用原料混合物Ｅと芯層用原料混合物Ｆとが用いられる。
最初に凸部形成部に対応する凹部Ｃ１を形成した型板Ｃを、図３（Ａ）に示すように、型板Ｃの凹部Ｃ1が上を向くようにしてコンベア（図示せず）の上に載置する。コンベア上に置いた型板Ｃを搬送させながら、該型板Ｃの表面全体に表層用原料混合物Ｅを散布して、図３（Ｂ）に示すように表層マットを形成する。なお、表層用原料混合物Ｅには芯層よりも粒径の細かい原料を配合し、得られる木質セメント板の表面が緻密となるようにする。
次に、表層用原料混合物Ｅを積載した型板Ｃを引き続き搬送させながら、表層用原料混合物Ｅの表面全体に芯層用原料混合物Ｆを散布する。芯層用原料混合物Ｆは表層用原料混合物Ｅよりも多く散布し、芯層マットの厚みを表層マットよりも大きくし、図３（Ｃ）に示すように芯層マットを形成する。なお、搬送方向の上方には、芯層用原料混合物Ｆの表面に軽く接触するようにブラシ（図示せず）を設け、芯層用原料混合物Ｆの表面を均しくする。エアーを吹き付けて表面を均しくしても良い。そして、原料混合物Ｅ、Ｆを積載した型板Ｃを更にコンベアで搬送させ、図３（Ｄ）に示すように、コンベアの上方に設けた図２に示す装置Ｂのロール部Ｂ２により、原料混合物Ｅ、Ｆのうち、型板Ｃの凹部Ｃ1の上に積層している原料混合物のみを、上側から加圧し、図３（Ｅ）に示すように、型板Ｃの凹部Ｃ1の上に積層している原料混合物のみが加圧された部分Ｅ１、Ｆ１を有するマットを得る。その後、加圧された部分Ｅ１、Ｆ１を有するマットは、搬送方向の上方に設けられたブラシ（図示せず）に表面を軽く接触させる、又はエアーを吹き付けることにより、搬送させながら図３（Ｆ）に示すような表面が均しくされたマットを得る。なお、表面を均しくするために、Ｅ１、Ｆ１以外の部分において、Ｅ１、Ｆ１よりも高い部分をブラシ又はエアー（図示せず）により掻き取り、マットの表面を均しくしても良い。
原料混合物Ｅ、Ｆを積載した型板Ｃは更にコンベア上で搬送され、原料混合物Ｆの表面全体に再度、表層用原料混合物Ｅを散布して、図３（Ｇ）に示すように芯層マットの上に表層マットを形成する。そして、そのようにして得られたマット表面に、図３（H）に示すように平滑なプレス板Ｄを載置し、型板Ｃと共にプレスし、硬化養生する。
上記製造工程によれば、原料混合物の散布と、原料混合物の一部加圧と、原料混合物の表面の均しとが型板Ｃを搬送させながら行われるので、生産効率が良い。また、原料混合物Ｅ、Ｆのうち型板Ｃの凹部Ｃ1に対応した部分のみが加圧され、加圧後に芯層マットの表面を均しくするので、プレスの際にマットには均一に荷重がかかり、プレス能力がそれ程大きくなくても生産が可能となり、かつ、木質セメント板Ａの表面凹部と凸部の比重の差を小さくすることができ、木質セメント板Ａへのクラックの発生と基材への塗料の吸い込みが改善される。更に、表層の原料混合物Ｅの量は変わらないので、木質セメント板Ａの強度、耐水性、耐凍性、耐候性を維持するとともに、多くの塗料が必要になる、塗装が不均一になるという問題を防ぐことができる。 FIG. 3 is a schematic diagram showing an example of the flow of the manufacturing process for manufacturing the wood cement board A shown in FIG. 1 according to the state of the mat manufactured in each process.
In the manufacturing process shown in FIG. 3, a raw material mixture E for the surface layer and a raw material mixture F for the core layer, which have different compositions, are used.
As shown in FIG. 3 (A), the template C on which the concave portion C1 corresponding to the convex portion forming portion is first formed is placed on the conveyor (not shown) so that the concave portion C1 of the template C faces upward. Placed on. While conveying the template C placed on the conveyor, the surface layer raw material mixture E is spread over the entire surface of the template C to form a surface mat as shown in FIG. In addition, the raw material mixture E for surface layer mix | blends the raw material with a particle size finer than a core layer, and makes the surface of the obtained wood cement board become dense.
Next, the core layer raw material mixture F is spread over the entire surface of the surface layer raw material mixture E while the template C loaded with the surface layer raw material mixture E is continuously conveyed. The core layer raw material mixture F is spread more than the surface layer raw material mixture E, and the thickness of the core layer mat is made larger than that of the surface layer mat to form the core layer mat as shown in FIG. In addition, a brush (not shown) is provided above the conveying direction so as to lightly contact the surface of the core layer raw material mixture F, and the surface of the core layer raw material mixture F is made uniform. Air may be blown to level the surface. Then, the template C loaded with the raw material mixtures E and F is further conveyed by a conveyor, and as shown in FIG. 3 (D), the raw material mixture is obtained by the roll part B2 of the apparatus B shown in FIG. Among E and F, only the raw material mixture laminated on the concave portion C1 of the template C is pressurized from above and laminated on the concave portion C1 of the template C as shown in FIG. A mat having portions E1 and F1 in which only the raw material mixture is pressed is obtained. Thereafter, the mat having the pressurized portions E1 and F1 is brought into contact with a brush (not shown) provided in the upper direction in the transport direction, or the surface is lightly blown, or air is blown, and the mat is transported as shown in FIG. A mat having a smooth surface as shown in FIG. In order to make the surface uniform, a portion higher than E1 and F1 in portions other than E1 and F1 may be scraped off with a brush or air (not shown) to make the surface of the mat uniform.
The template C loaded with the raw material mixtures E and F is further conveyed on a conveyor, and the surface layer raw material mixture E is again sprayed over the entire surface of the raw material mixture F, so that the core layer mat as shown in FIG. A surface mat is formed on the substrate. Then, a smooth press plate D is placed on the surface of the mat thus obtained as shown in FIG. 3 (H), pressed together with the template C, and cured and cured.
According to the manufacturing process, since the spraying of the raw material mixture, partial pressurization of the raw material mixture, and leveling of the surface of the raw material mixture are performed while the template C is being conveyed, the production efficiency is good. Further, only the portion of the raw material mixture E, F corresponding to the concave portion C1 of the template C is pressurized, and the surface of the core layer mat is made uniform after pressing, so that a uniform load is applied to the mat during pressing. Therefore, production is possible even if the press capacity is not so high, and the difference in specific gravity between the concave and convex portions of the surface of the wood cement board A can be reduced, and the occurrence of cracks in the wood cement board A and the substrate Improves paint inhalation. Furthermore, since the amount of the raw material mixture E in the surface layer does not change, the strength, water resistance, frost resistance, and weather resistance of the wood cement board A are maintained, and many paints are required, and the coating becomes uneven. Can be prevented.

図４は、図１に示す木質セメント板Ａを製造するための製造工程の流れの参考例を、各工程において製造されるマットの状態によって示した模式図である。
図４に示す製造工程も、表層と芯層とで用いる原料混合物の配合や厚さが異なり、表層用原料混合物Ｅと芯層用原料混合物Ｆとが用いられる、表層用原料混合物Ｅの上に芯層用原料混合物Ｆを散布する、芯層マットは表層マットよりも厚みが大きい、コンベアの上方に設けた図２に示す装置Ｂにより、原料混合物Ｅ、Ｆのうち型板Ｃの凹部Ｃ1に対応した部分のみを加圧し、加圧された部分Ｅ１、Ｆ１を有するマットを製造する、加圧された部分Ｅ１、Ｆ１を有するマットの表面を均しくしてから、原料混合物Ｆの表面全体に表層用原料混合物Ｅを散布し、プレス、硬化養生を行うという点では図３に示す製造工程と同じだが、図４（Ａ）に示すように最初に平滑なプレス板Ｄをコンベア上に載置すること、図４（Ｂ）〜（Ｇ）に示すように、原料混合物の散布と、原料混合物の一部加圧と、原料混合物の表面の均しとが平滑なプレス板Ｄを搬送させながら行なうことと、図４（H）に示すように、三層構造のマットの上に凸部形成部に対応する凹部Ｃ１を形成した型板Ｃを載置する点が図３に記載の製造工程とは異なる。なお、型板Ｃは、凹部Ｃ１を下向きにしてマットの上に載置するので、加圧された位置と凸部Ｃ１の位置は同じになる。
上記製造工程においても、原料混合物の散布と、原料混合物の一部加圧と、原料混合物の表面の均しとがプレス板Ｄを搬送させながら行うので、図３に示す製造方法と同じく、生産効率が良い。また、原料混合物Ｅ、Ｆのうち型板Ｃの凹部Ｃ1に対応した部分のみが加圧され、加圧後に芯層マットの表面を均しくするので、プレスの際にマットには均一に荷重がかかり、プレス能力がそれ程大きくなくても生産が可能となり、かつ、木質セメント板Ａの表面凹部と凸部の比重の差を小さくすることができ、木質セメント板Ａへのクラックの発生と基材への塗料の吸い込みが改善される。更に、表層の原料混合物Ｅの量は変わらないので、木質セメント板Ａの強度、耐水性、耐凍性、耐候性を維持するとともに、多くの塗料が必要になる、塗装が不均一になるという問題を防ぐことができる。
FIG. 4 is a schematic diagram showing a reference example of the flow of the manufacturing process for manufacturing the wood cement board A shown in FIG. 1 according to the state of the mat manufactured in each process.
In the manufacturing process shown in FIG. 4, the composition and thickness of the raw material mixture used in the surface layer and the core layer are different, and the surface layer raw material mixture E and the core layer raw material mixture F are used. The core layer mat for spraying the core layer raw material mixture F is thicker than the surface layer mat. The apparatus B shown in FIG. Pressurize only the corresponding part to produce a mat with the pressurized parts E1, F1, level the surface of the mat with the pressurized parts E1, F1, and then apply it to the entire surface of the raw material mixture F It is the same as the manufacturing process shown in FIG. 3 in that the raw material mixture E for the surface layer is dispersed, pressed and cured, but first, a smooth press plate D is placed on the conveyor as shown in FIG. 4 (A). As shown in FIGS. 4B to 4G, The spraying of the raw material mixture, the partial pressurization of the raw material mixture, and the smoothing of the surface of the raw material mixture are carried out while conveying a smooth press plate D, as shown in FIG. 3 differs from the manufacturing process shown in FIG. 3 in that a template C in which a concave portion C1 corresponding to a convex portion forming portion is placed on the mat is placed. Since the template C is placed on the mat with the concave portion C1 facing downward, the pressed position is the same as the convex portion C1.
Also in the above manufacturing process, since the spraying of the raw material mixture, the partial pressurization of the raw material mixture, and the leveling of the surface of the raw material mixture are carried out while the press plate D is being conveyed, production is performed as in the manufacturing method shown in FIG. Efficiency is good. Further, only the portion of the raw material mixture E, F corresponding to the concave portion C1 of the template C is pressurized, and the surface of the core layer mat is made uniform after pressing, so that a uniform load is applied to the mat during pressing. Therefore, production is possible even if the press capacity is not so high, and the difference in specific gravity between the concave and convex portions of the surface of the wood cement board A can be reduced, and the occurrence of cracks in the wood cement board A and the substrate Improves paint inhalation. Furthermore, since the amount of the raw material mixture E in the surface layer does not change, the strength, water resistance, frost resistance, and weather resistance of the wood cement board A are maintained, and many paints are required, and the coating becomes uneven. Can be prevented.

図５は、図１に示す木質セメント板Ａを製造するための製造工程の流れの更に他の実施例を、各工程において製造されるマットの状態によって示した模式図である。
図５に示す製造方法は、原料混合物の配合が１種類であり、原料混合物Ｇのみが用いられる。
最初に凸部形成部に対応する凹部Ｃ１を形成した型板Ｃをコンベアの上に載置し、図５（Ａ）に示すように、型板Ｃの凹部Ｃ１が上を向くようにする。次に、コンベア上に置いた型板Ｃを搬送させながら、該型板Ｃの表面全体に原料混合物Ｇを散布して、図５（Ｂ）に示すようなマットを形成する。なお、搬送方向の上方には、原料混合物Ｇの表面に軽く接触するようにブラシ（図示せず）を設け、原料混合物Ｇの表面を均しくする。エアーを吹き付けて表面を均しくしても良い。その後、原料混合物Ｇを積層した型板Ｃを更にコンベア上を搬送させ、コンベアの上方に設けた図２に示す装置Ｂのロール部Ｂ２により、マットの原料混合物Ｇのうち型板Ｃの凹部Ｃ１の上に積層している原料混合物のみを、上側から加圧し、図５（Ｄ）に示すように、型板Ｃの凹部Ｃ1の上に積層している原料混合物のみが加圧された部分Ｇ１を有するマットを得る。その後、加圧された部分Ｇ１を有するマットは、搬送方向の上方に設けられたブラシ（図示せず）に表面を軽く接触させる、又はエアーを吹き付けることにより、搬送させながら図５（Ｅ）に示すように表面を均しくさせた後に、図５（Ｆ）に示すように、表面が平滑なプレス板Ｄを載置し、型板Ｃと共にプレス、硬化養生が行なわれる。なお、表面を均しくするために、Ｇ１以外の部分において、Ｇ１よりも高い部分をブラシ又はエアー（図示せず）により掻き取り、マットの表面を均しくしても良い。
上記製造工程によれば、原料混合物の散布と、原料混合物の一部加圧と、原料混合物の表面の均しとが型板Ｃを搬送させながら行い、原料混合物の配合は１種類だけなので、図３，４に示す製造工程よりも生産効率が良い。なお、原料混合物Ｇは、型板Ｃの凹部Ｃ1に対応した部分のみが加圧され、加圧後にマットの表面を均しくするので、プレスの際にマットには均一に荷重がかかり、プレス能力がそれ程大きくなくても生産が可能となり、かつ、木質セメント板Ａの表面凹部と凸部の比重の差を小さくすることができ、木質セメント板Ａへのクラックの発生と基材への塗料の吸い込みが改善されることは、図３，４に示す製造工程と同じである。また、木質セメント板Ａの強度、耐水性、耐凍性、耐候性を維持するとともに、多くの塗料が必要になる、塗装が不均一になるという問題を防ぐことができるという効果も図３，４に示す製造方法と同じである。 FIG. 5 is a schematic view showing still another embodiment of the flow of the manufacturing process for manufacturing the wood cement board A shown in FIG. 1 according to the state of the mat manufactured in each process.
In the manufacturing method shown in FIG. 5, there is only one kind of raw material mixture, and only the raw material mixture G is used.
First, the template C on which the concave portion C1 corresponding to the convex portion forming portion is formed is placed on the conveyor so that the concave portion C1 of the template C faces upward as shown in FIG. Next, while conveying the template C placed on the conveyor, the raw material mixture G is dispersed over the entire surface of the template C to form a mat as shown in FIG. A brush (not shown) is provided above the conveying direction so as to lightly contact the surface of the raw material mixture G, and the surface of the raw material mixture G is made uniform. Air may be blown to level the surface. Thereafter, the template C on which the raw material mixture G is laminated is further conveyed on the conveyor, and the concave portion C1 of the template C of the raw material mixture G of the mat is transferred by the roll B2 of the apparatus B shown in FIG. Only the raw material mixture laminated on the upper side is pressurized from above, and as shown in FIG. 5D, only the raw material mixture laminated on the concave portion C1 of the template C is pressurized G1. A mat with Thereafter, the mat having the pressurized portion G1 is brought into contact with a brush (not shown) provided in the upper direction in the transport direction, or the surface is lightly blown, or air is blown to the mat in FIG. 5E. After the surface is leveled as shown, a press plate D having a smooth surface is placed as shown in FIG. 5F, and pressing and curing curing are performed together with the template C. In order to make the surface uniform, the portion higher than G1 may be scraped off with a brush or air (not shown) in portions other than G1 to make the surface of the mat uniform.
According to the above production process, the dispersion of the raw material mixture, the partial pressurization of the raw material mixture, and the leveling of the surface of the raw material mixture are carried out while conveying the template C, and only one type of raw material mixture is blended. Production efficiency is better than the manufacturing process shown in FIGS. In the raw material mixture G, only the portion corresponding to the concave portion C1 of the template C is pressurized, and the surface of the mat is made uniform after pressing. Can be produced even if it is not so large, and the difference in specific gravity between the concave and convex portions of the surface of the wood cement board A can be reduced, the occurrence of cracks in the wood cement board A and the coating of the base material The improvement in suction is the same as the manufacturing process shown in FIGS. In addition, while maintaining the strength, water resistance, freezing resistance, and weather resistance of the wood cement board A, the effects of preventing the problem that many paints are required and the coating is not uniform are also shown in FIGS. It is the same as the manufacturing method shown in 1.

図６は、図１に示す木質セメント板Ａを製造するための製造工程の流れの更に他の参考例を、各工程において製造されるマットの状態によって示した模式図である。
図６に示す製造工程も、原料混合物の配合が１種類であり、原料混合物Ｇのみが用いられる、コンベア上を搬送させながら原料混合物Ｇを散布してマットを形成する、コンベアの上方に設けた図２に示す装置Ｂのロール部Ｂ２により、マットの原料混合物Ｇのうち型板Ｃの凹部Ｃ１に対応した部分のみを上側から加圧し、加圧された部分Ｇ１を有するマットを製造する、加圧された部分Ｇ１を有するマットの表面を均しくしてから、プレス、硬化養生するという点では図５に記載の製造方法と同じだが、図６（Ａ）に示すように、最初にプレス板Ｄの上に原料混合物Ｇを散布することと、図６（Ｂ）〜（Ｅ）に示すように、原料混合物の散布と、原料混合物の一部加圧と、原料混合物の表面の均しとが平滑なプレス板Ｄを搬送させながら行なうことと、図６（Ｆ）に示すように、マットの上に凸部形成部に対応する凹部Ｃ１を形成した型板Ｃを載置する点が図５に記載の製造方法とは異なる。なお、型板Ｃは、凹部Ｃ１を下向きにしてマットの上に載置するので、加圧された位置と凸部Ｃ１の位置は同じになる。
上記製造工程によれば、原料混合物の散布と、原料混合物の一部加圧と、原料混合物の表面の均しとがプレス板Ｄを搬送させながら行い、原料混合物の配合は１種類だけなので、図５に示す製造工程と同じく、生産効率が良い。また、原料混合物Ｇは、型板Ｃの凹部Ｃ1に対応した部分のみが加圧され、加圧後にマットの表面を均しくするので、プレスの際にマットには均一に荷重がかかり、プレス能力がそれ程大きくなくても生産が可能となり、かつ、木質セメント板Ａの表面凹部と凸部の比重の差を小さくすることができ、木質セメント板Ａへのクラックの発生と基材への塗料の吸い込みが改善されることは、図３，４，５に示す製造工程と同じである。更に、木質セメント板Ａの強度、耐水性、耐凍性、耐候性を維持するとともに、多くの塗料が必要になる、塗装が不均一になるという問題を防ぐことができるという効果も図３，４，５に示す製造工程と同じである。 FIG. 6 is a schematic view showing still another reference example of the flow of the manufacturing process for manufacturing the wood cement board A shown in FIG. 1 according to the state of the mat manufactured in each process.
The manufacturing process shown in FIG. 6 is also provided at the upper part of the conveyor, in which only one raw material mixture is used and only the raw material mixture G is used. 2, only the portion corresponding to the concave portion C1 of the template C in the raw material mixture G of the mat is pressed from above to manufacture a mat having the pressed portion G1. In the point that the surface of the mat having the pressed portion G1 is leveled, and then pressed and cured and cured, it is the same as the manufacturing method shown in FIG. 5, but as shown in FIG. Scattering the raw material mixture G over D, as shown in FIGS. 6 (B) to (E), spraying the raw material mixture, partially pressing the raw material mixture, and leveling the surface of the raw material mixture While carrying a smooth press plate D It and, as shown in FIG. 6 (F), the point of placing the template C with a recess C1 corresponding to the projection forming portions on the mat is different from the manufacturing method described in FIG. Since the template C is placed on the mat with the concave portion C1 facing downward, the pressed position is the same as the convex portion C1.
According to the above production process, the dispersion of the raw material mixture, the partial pressurization of the raw material mixture, and the leveling of the surface of the raw material mixture are performed while conveying the press plate D, and only one type of raw material mixture is blended. Like the manufacturing process shown in FIG. 5, the production efficiency is good. In addition, since the raw material mixture G is pressurized only at the portion corresponding to the concave portion C1 of the template C, and the surface of the mat is made uniform after pressing, the mat is uniformly loaded during pressing, and the press capability Can be produced even if it is not so large, and the difference in specific gravity between the concave and convex portions of the surface of the wood cement board A can be reduced, the occurrence of cracks in the wood cement board A and the coating of the base material The improvement in suction is the same as the manufacturing process shown in FIGS. Further, while maintaining the strength, water resistance, freezing resistance, and weather resistance of the wood cement board A, there are also effects that a large amount of paint is required and the problem of non-uniform coating can be prevented. , 5 is the same as the manufacturing process.

なお、本発明は上記実施例に限定されるものではない。
図３，４に示す製造工程において、表側に設ける表層用原料混合物Ｅと、裏面側に設ける表層用原料混合物Ｅの配合を異ならしても良し、裏面側に表層用原料混合物Ｅを設けなくすることもできる。
また、図７に示すように、凹部を直交する２方向に形成する場合には、長手方向と短手方向に搬送させる２つのコンベアを用意し、それぞれのコンベアの上方に図２に示す装置Ｂを設置することにより、２方向に凹部を有するマットを形成することができる。 In addition, this invention is not limited to the said Example.
In the manufacturing process shown in FIGS. 3 and 4, the composition of the surface layer raw material mixture E provided on the front side and the surface layer raw material mixture E provided on the back side may be different, and the surface layer raw material mixture E is not provided on the back side. You can also.
In addition, as shown in FIG. 7, in the case where the concave portions are formed in two directions orthogonal to each other, two conveyors are prepared to convey in the longitudinal direction and the short direction, and the apparatus B shown in FIG. By installing the, a mat having recesses in two directions can be formed.

次に、水硬性材料としてポルトランドセメントを４０質量％、ケイ酸含有物質として珪砂を３８質量％、木質補強材として木片を１１質量％とパルプを１１質量％含有する原料混合物に、硬化促進剤として硫酸アルミニウムを５質量％外添し、図５に示す木質セメント板の製造工程により、図１に示す木質セメント板を製造し、１６５℃、６kgf/cm２で６時間オートクレーブ養生し、単層からなる、全体の厚みが１６mmの木質セメント板である実施例１を得た。なお、該木質セメント板において、凹凸形状を鋭角で深く形成するため、凸部の頂点から凹部の底点までの長さは４mmとした。該木質セメント板の全体の厚みを１６mmにするためのマットと型板のプレス圧は４５kgf/cm２であった。
また、別の実施例として、水硬性材料としてポルトランドセメントを３８質量％、ケイ酸含有物質として珪砂を３８質量％、木質補強材としてパルプを２４質量含有する原料混合物に、硬化促進剤として硫酸アルミニウムを５質量％外添して表層の原料混合物とし、水硬性材料としてポルトランドセメントを４０質量％、ケイ酸含有物質として珪砂を４０質量％、木質補強材として木片を２０質量％含有する原料混合物に、硬化促進剤として硫酸アルミニウムを３質量％外添して芯層の原料混合物として、図３に示す木質セメント板の製造工程により図１に示す木質セメント板を製造し、１６５℃、６kgf/cm２で６時間オートクレーブ養生し、三層からなる、厚みが１６mmの実施例２を得た。なお、表層と芯層の配合比率は質量比で１：４であり、該木質セメント板においても、凸部の頂点から凹部の底点までの長さは４mmとした。実施例２において、木質セメント板の全体の厚みを、実施例１と同様に１６mmにするためのマットと型板のプレス圧は４５kgf/cm２であった。
更に、実施例１の比較として、実施例１の製造方法において、型板の凹部に積層した部分の原料混合物のみに上側から加圧することと、一部加圧されたマットの表面を均しくすること以外を実施し、単層からなる比較例１を得た。なお、比較例１では、木質セメント板の全体の厚みを、実施例１と同様に１６mmにするためのマットと型板のプレス圧力は、５０kgf/cm２であった。
更に、実施例２の比較として、実施例２の製造方法において、型板の凹部に積層した部分の原料混合物のみに上側から加圧することと、一部加圧されたマットの表面を均しくすること以外を実施し、三層からなる比較例２を得た。なお、比較例２では、木質セメント板の全体の厚みを、実施例２と同様に１６mmにするためのマットと型板のプレス圧力は、５０kgf/cm２であった。
上記実施例１，２及び比較例１，２について、各木質セメント板の全体の平均比重、及び、凸部、凹部の比重を測定すると共に、該木質セメント板表面の表面吸水量、及び曲げ強度を測定し、表１に示した。なお、曲げ強度はＪＩＳ Ａ １４０８に準じ試験体５００×４００ｍｍで測定し、表面吸水量は、枠置き法による測定であり、塗装板の表面に０．２×０．２ｍの枠を設け、該枠内に水を一定量入れた状態で２４時間放置し、測定前後の塗装板の質量変化を数１により算出した値である。 Next, a raw material mixture containing 40% by mass of Portland cement as a hydraulic material, 38% by mass of silica sand as a silicic acid-containing substance, 11% by mass of wood chips and 11% by mass of pulp as a wood reinforcing material, and a curing accelerator 5% by mass external addition of aluminum sulfate, the wood cement board shown in FIG. 1 is manufactured by the manufacturing process of the wood cement board shown in FIG. 5, and autoclaved at 165 ° C. and 6 kgf / cm 2 for 6 hours. Example 1 which is a wood cement board having an overall thickness of 16 mm was obtained. In the wood cement board, the length from the top of the convex part to the bottom point of the concave part was 4 mm in order to form the concave and convex shape deeply at an acute angle. The press pressure of the mat and the template for making the whole thickness of the wood cement board 16 mm was 45 kgf / cm 2 .
As another example, a raw material mixture containing 38% by mass of Portland cement as a hydraulic material, 38% by mass of silica sand as a siliceous material, and 24% of pulp as a wood reinforcing material, and aluminum sulfate as a hardening accelerator To a raw material mixture containing 40% by mass of Portland cement as a hydraulic material, 40% by mass of silica sand as a silicic acid-containing material, and 20% by mass of wood chips as a wood reinforcing material The wood cement board shown in FIG. 1 is manufactured by the manufacturing process of the wood cement board shown in FIG. 3 as a raw material mixture of the core layer by adding 3% by mass of aluminum sulfate as a hardening accelerator, and 165 ° C., 6 kgf / cm. The autoclave was cured for 6 hours at 2 to obtain Example 2 consisting of three layers and having a thickness of 16 mm. In addition, the compounding ratio of the surface layer and the core layer was 1: 4 by mass ratio, and the length from the top of the convex portion to the bottom point of the concave portion was 4 mm also in the wood cement board. In Example 2, the press pressure of the mat and the template for making the total thickness of the wood cement board 16 mm as in Example 1 was 45 kgf / cm 2 .
Further, as a comparison with Example 1, in the manufacturing method of Example 1, only the portion of the raw material mixture laminated in the concave portion of the template is pressed from above and the surface of the partially pressed mat is made uniform. Except this, Comparative Example 1 consisting of a single layer was obtained. In Comparative Example 1, the press pressure of the mat and the template for setting the total thickness of the wood cement board to 16 mm as in Example 1 was 50 kgf / cm 2 .
Further, as a comparison with Example 2, in the manufacturing method of Example 2, only the portion of the raw material mixture laminated in the concave portion of the template is pressed from above, and the surface of the partially pressed mat is made uniform. Except this, Comparative Example 2 consisting of three layers was obtained. In Comparative Example 2, the press pressure of the mat and the template for setting the total thickness of the wood cement board to 16 mm as in Example 2 was 50 kgf / cm 2 .
For the above Examples 1 and 2 and Comparative Examples 1 and 2, the average specific gravity of each wood cement board and the specific gravity of the convex part and the concave part were measured, and the surface water absorption amount and bending strength of the wooden cement board surface were measured. And are shown in Table 1. The bending strength was measured with a specimen 500 × 400 mm according to JIS A 1408, the surface water absorption was measured by a frame placing method, and a 0.2 × 0.2 m frame was provided on the surface of the coated plate, This is a value obtained by calculating the mass change of the coated plate before and after the measurement with the constant amount of water in the frame for 24 hours and by the equation (1).

Figure 0005548340
Figure 0005548340

Figure 0005548340
Figure 0005548340

表１に示すとおり、実施例１，２は、木質セメント板の全体の平均比重、及び、凸部、凹部の比重が１．１以上であり、該凸部の比重と該凹部の比重の差が０．１より小さく、表面吸水量、及び曲げ強度に優れる。しかし、比較例１，２は、木質セメント板の全体の平均比重、及び、凸部の比重が１．１よりも小さく、かつ、該凸部の比重と該凹部の比重の差が０．１よりも大きいので、表面吸水量、及び曲げ強度は実施例１，２に比べ劣る。   As shown in Table 1, in Examples 1 and 2, the average specific gravity of the whole wood cement board and the specific gravity of the convex part and the concave part are 1.1 or more, and the difference between the specific gravity of the convex part and the specific gravity of the concave part Is smaller than 0.1 and excellent in surface water absorption and bending strength. However, in Comparative Examples 1 and 2, the average specific gravity of the whole wood cement board and the specific gravity of the convex portion are smaller than 1.1, and the difference between the specific gravity of the convex portion and the specific gravity of the concave portion is 0.1. Therefore, the surface water absorption and bending strength are inferior to those of Examples 1 and 2.

また、実施例１、２と同じ製造方法で、凸部の頂点から凹部の底点までの長さが４mmである、全体の厚みが８mmの木質セメント板を製造したところ、搬送時に破損し、強度が弱かった。
更に、実施例１、２と同じ製造方法で、凸部の頂点から凹部の底点までの長さが１mmである木質セメント板を製造したところ、物性面では実施例１、２と同程度であったが、凹凸が鋭角に見えず、意匠性に劣った。 Moreover, in the same manufacturing method as in Examples 1 and 2, when a wood cement board having a total thickness of 8 mm from the top of the convex part to the bottom of the concave part was manufactured, it was damaged during transportation. The strength was weak.
Furthermore, when a wood cement board having a length of 1 mm from the top of the convex part to the bottom of the concave part was produced by the same production method as in Examples 1 and 2, the physical properties were about the same as in Examples 1 and 2. However, the unevenness was not visible at an acute angle, and the design was inferior.

以上説明したように、本発明に係る木質セメント板によれば、該木質セメント板の凸部の頂点から裏面までの長さは９mm以上であり、該凸部の頂点から凹部の底点までの長さは、２mm以上かつ該凸部の頂点から該裏面までの長さの半分以下であり、該木質セメント板の全体の平均比重、及び、凸部、凹部の比重がそれぞれ１．１以上であり、該凹部と該凸部の比重の差が０．１より小さいので、強度が十分であると共に、硬化養生工程、乾燥工程や運搬工程において発生する恐れのある、木質セメント板へのクラックの発生を防ぐことができ、かつ、塗装工程において、基材への塗料の吸い込みが改善される。その結果、木質セメント板製品の強度、耐水性、耐凍性、耐候性が低下したり、多くの塗料が必要になったり、塗装が不均一になるという問題も防ぐことができる。また、木質セメント板の凸部の頂点から凹部の底点までの長さは、２mm以上かつ該凸部の頂点から裏面までの長さの半分以下なので、凹凸形状は鋭角で深く、意匠性に優れる。タイルを留め付ける場合には、タイルが外れにくくなる。   As described above, according to the wood cement board according to the present invention, the length from the top of the convex part to the back surface of the wood cement board is 9 mm or more, and from the top of the convex part to the bottom of the concave part. The length is 2 mm or more and less than half of the length from the top of the convex part to the back surface, and the average specific gravity of the whole wood cement board and the specific gravity of the convex part and the concave part are 1.1 or more, respectively. Yes, since the difference in specific gravity between the concave and convex portions is less than 0.1, the strength is sufficient and cracks in the wood cement board that may occur in the curing and curing process, drying process and transporting process Generation | occurrence | production can be prevented and inhalation of the coating material to a base material is improved in a painting process. As a result, the strength, water resistance, frost resistance, and weather resistance of the wood cement board product can be prevented, and many problems such as the need for many paints and uneven coating can be prevented. In addition, the length from the top of the convex part of the wood cement board to the bottom of the concave part is 2 mm or more and less than half the length from the top of the convex part to the back surface. Excellent. When the tile is fastened, it becomes difficult to remove the tile.

表面に凸部を有する木質セメント板を示した図である。It is the figure which showed the wood cement board which has a convex part on the surface. 図１に示す木質セメント板を製造するために使用される、マット原料混合物の一部を加圧する装置の一実施例を示した図である。It is the figure which showed one Example of the apparatus which presses a part of mat | matte raw material mixture used in order to manufacture the wood cement board shown in FIG. 図１に示す木質セメント板を製造するための製造工程の流れを、各工程において製造されるマットの状態によって示した模式図である。It is the schematic diagram which showed the flow of the manufacturing process for manufacturing the wood cement board shown in FIG. 1 with the state of the mat manufactured in each process. 図１に示す木質セメント板を製造するための製造工程の流れの他の例を、各工程において製造されるマットの状態によって示した模式図である。It is the schematic diagram which showed the other example of the flow of the manufacturing process for manufacturing the wood cement board shown in FIG. 1 with the state of the mat manufactured in each process. 図１に示す木質セメント板を製造するための製造工程の流れの更に他の例を、各工程において製造されるマットの状態によって示した模式図である。It is the schematic diagram which showed the further another example of the flow of the manufacturing process for manufacturing the wood cement board shown in FIG. 1 with the state of the mat manufactured in each process. 図１に示す木質セメント板を製造するための製造工程の流れの更に他の例を、各工程において製造されるマットの状態によって示した模式図である。It is the schematic diagram which showed the further another example of the flow of the manufacturing process for manufacturing the wood cement board shown in FIG. 1 with the state of the mat manufactured in each process. 表面に凹部を２方向に有する木質セメント板を示した図である。It is the figure which showed the wood cement board which has a recessed part in two directions on the surface.

符号の説明Explanation of symbols

Ａ 木質セメント板
Ａ１ 凸部
Ｂ マット原料混合物の一部を加圧する装置
Ｂ１ 回転軸
Ｂ２ ロール部
Ｃ 型板
Ｃ１ 型板の凹部
Ｄ プレス板
Ｅ 表層用原料混合物
Ｅ１ 表層用原料混合物が加圧された部分
Ｆ 芯層用原料混合物
Ｆ１ 芯層用原料混合物が加圧された部分
Ｇ 原料混合物
Ｇ１ 原料混合物が加圧された部分 A Wood cement board A1 Convex part B Equipment for pressurizing part of mat raw material mixture B1 Rotating shaft B2 Roll part C Template C1 Concave part of template D Press board E Surface material mixture E1 Surface material mixture was pressurized Part F Raw material mixture for core layer F1 Part where raw material mixture for core layer is pressurized G Raw material mixture G1 Part where raw material mixture is pressurized

Claims (2)

表面に凹凸意匠面を有し、水硬性材料と、ケイ酸含有物質と、木質補強材とを含有する木質セメント板の製造方法であり、
上記木質セメント板の凸部の頂点から裏面までの長さは９mm以上であり、
上記凸部の頂点から凹部の底点までの長さは、２mm以上かつ該凸部の頂点から上記裏面までの長さの半分以下であり、
上記木質セメント板の全体の平均比重、及び、上記凸部、上記凹部の比重がそれぞれ１．１以上であり、
上記凸部の比重と上記凹部の比重の差が０．１より小さい木質セメント板の製造方法であって、
上記木質セメント板の凸部形成部に対応する凹部を形成した型板を搬送させながら、該型板の上に原料混合物を散布してマットを形成する工程と、該マットの原料混合物で、該型板の凹部に積層した部分の原料混合物のみに上側から加圧する工程と、一部加圧されたマットの表面を均しくする工程を行い、
更に、得られたマットと該型板とをプレスし、硬化養生する工程を行う
ことを特徴とする木質セメント板の製造方法。 A method for producing a wood cement board having an uneven design surface on the surface, containing a hydraulic material, a silicic acid-containing substance, and a wood reinforcing material,
The length from the top of the convex part of the wood cement board to the back is 9mm or more,
The length from the top of the convex part to the bottom point of the concave part is 2 mm or more and half or less of the length from the top of the convex part to the back surface,
The average specific gravity of the whole wood cement board, and the specific gravity of the convex part and the concave part are each 1.1 or more,
A method for producing a wood cement board in which the difference between the specific gravity of the convex portion and the specific gravity of the concave portion is less than 0.1 ,
A step of forming a mat by spraying a raw material mixture on the template while conveying a template in which a concave portion corresponding to the convex portion forming portion of the wood cement plate is conveyed, and the raw material mixture of the mat, Performing the process of pressing only the raw material mixture of the part laminated in the concave portion of the template from the upper side and the process of leveling the surface of the partially pressed mat,
The method for producing a wood cement board , further comprising a step of pressing the obtained mat and the template and curing and curing . 表面に凹凸意匠面を有し、水硬性材料と、ケイ酸含有物質と、木質補強材とを含有する木質セメント板の製造方法であり、
上記木質セメント板の凸部の頂点から裏面までの長さは９mm以上であり、
上記凸部の頂点から凹部の底点までの長さは、２mm以上かつ該凸部の頂点から上記裏面までの長さの半分以下であり、
上記木質セメント板の全体の平均比重、及び、上記凸部、上記凹部の比重がそれぞれ１．１以上であり、
上記凸部の比重と上記凹部の比重の差が０．１より小さく、
上記木質セメント板は、表層と芯層からなり、
上記表層と上記芯層の原料混合物の組成は異なり、該表層は該芯層よりも緻密構造である木質セメント板の製造方法であって、
上記木質セメント板の凸部形成部に対応する凹部を形成した型板を搬送させながら、該型板の上に表層用原料混合物を散布して表層マットを形成する工程と、該表層マットの上に芯層用原料混合物を散布して芯層マットを形成する工程と、該芯層マットと表層マットの原料混合物で、該型板の凹部に積層した部分の原料混合物のみに上側から加圧する工程と、一部加圧された該芯層マットの表面を均しくする工程と、表面が均しくされた芯層マットの上に更に該表層用原料混合物を散布して表層マットを形成する工程とを行い、
更に、得られた三層構造のマットと該型板とをプレスし、硬化養生する工程を行う
ことを特徴とする木質セメント板の製造方法。
 A method for producing a wood cement board having an uneven design surface on the surface, containing a hydraulic material, a silicic acid-containing substance, and a wood reinforcing material ,
The length from the top of the convex part of the wood cement board to the back is 9mm or more,
The length from the top of the convex part to the bottom point of the concave part is 2 mm or more and half or less of the length from the top of the convex part to the back surface,
The average specific gravity of the whole wood cement board, and the specific gravity of the convex part and the concave part are each 1.1 or more,
The difference between the specific gravity of the convex part and the specific gravity of the concave part is smaller than 0.1,
The wood cement board consists of a surface layer and a core layer,
The composition of the raw material mixture of the surface layer and the core layer is different, and the surface layer is a method for producing a wood cement board having a denser structure than the core layer ,
A step of forming a surface mat by spreading a surface layer raw material mixture on the template while conveying a template in which concave portions corresponding to the convexity forming portions of the wood cement plate are conveyed; A step of spraying the core layer raw material mixture to form a core layer mat, and a step of pressing from the upper side only the raw material mixture of the core layer mat and the surface layer mat in the portion laminated on the concave portion of the template And a step of leveling the surface of the partially pressed core layer mat, and a step of further spreading the surface layer raw material mixture on the core layer mat having a uniform surface to form a surface layer mat. And
A method for producing a wood cement board , further comprising pressing the obtained three-layer structure mat and the template and curing and curing .
JP2008092317A 2008-03-31 2008-03-31 Manufacturing method of wood cement board Active JP5548340B2 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP2008092317A JP5548340B2 (en) 2008-03-31 2008-03-31 Manufacturing method of wood cement board
RU2008144474/03A RU2392401C1 (en) 2008-03-31 2008-11-07 Wood-cement board
TW101121318A TWI382910B (en) 2008-03-31 2008-11-27 Manufacture of woody cement board
TW097145934A TW200940298A (en) 2008-03-31 2008-11-27 Wood cement board
AU2008264147A AU2008264147B2 (en) 2008-03-31 2008-12-19 Wood cement board
CA2647661A CA2647661C (en) 2008-03-31 2008-12-19 Wood cement board
DE102008055110.4A DE102008055110B4 (en) 2008-03-31 2008-12-22 Wood cement board
CN2008101907082A CN101550743B (en) 2008-03-31 2008-12-30 Wood cement board
US12/351,035 US20090242728A1 (en) 2008-03-31 2009-01-09 Wood cement board
KR1020110098156A KR20110111276A (en) 2008-03-31 2011-09-28 Method for manufacturing a wooden cement plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008092317A JP5548340B2 (en) 2008-03-31 2008-03-31 Manufacturing method of wood cement board

Publications (2)

Publication Number Publication Date
JP2009242189A JP2009242189A (en) 2009-10-22
JP5548340B2 true JP5548340B2 (en) 2014-07-16

Family

ID=41060728

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008092317A Active JP5548340B2 (en) 2008-03-31 2008-03-31 Manufacturing method of wood cement board

Country Status (9)

Country Link
US (1) US20090242728A1 (en)
JP (1) JP5548340B2 (en)
KR (1) KR20110111276A (en)
CN (1) CN101550743B (en)
AU (1) AU2008264147B2 (en)
CA (1) CA2647661C (en)
DE (1) DE102008055110B4 (en)
RU (1) RU2392401C1 (en)
TW (2) TW200940298A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ595137A (en) * 2009-04-03 2014-09-26 Hardie James Technology Ltd Cementitious articles, formulations, methods of making and uses
RU2466952C1 (en) * 2011-07-06 2012-11-20 Юлия Алексеевна Щепочкина Cement wood mixture
ITUA20162261A1 (en) * 2016-04-04 2017-10-04 Maria Luisa Bisognin Ecological panel finished for wall fillings in raw fiber-reinforced clay with alternative hemp to the panels or slabs on the market and its procedure
RU2743743C2 (en) 2016-09-28 2021-02-25 Нитиха Корпорейшн Construction material and method of construction material production
JP7210132B2 (en) 2017-09-28 2023-01-23 ニチハ株式会社 Inorganic board and manufacturing method thereof
KR101991770B1 (en) * 2017-10-16 2019-10-01 오동주 Environmental friendly wood chip block, panel and the manufacturing method thereof

Family Cites Families (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1856936A (en) * 1928-08-11 1932-05-03 Nat Gypsum Co Plaster board apparatus
US3284980A (en) * 1964-07-15 1966-11-15 Paul E Dinkel Hydraulic cement panel with low density core and fiber reinforced high density surface layers
US5169573A (en) * 1990-02-09 1992-12-08 Mitsui Petrochemical Industries, Ltd. Method of forming three-dimensional pattern
DE9101790U1 (en) * 1991-02-13 1991-05-02 Eternit Ag, 1000 Berlin, De
JP3100513B2 (en) 1994-08-30 2000-10-16 株式会社クボタ Surface patterning method for fiber reinforced cement board
JP3286112B2 (en) 1995-03-27 2002-05-27 松下電工株式会社 Inorganic plate patterning equipment
CN1046658C (en) * 1996-07-25 1999-11-24 松下电工株式会社 Method of fabricating concave patterned cement plate
US5693409A (en) * 1996-10-22 1997-12-02 Macmillan Bloedel Limited Trim board
JPH1177651A (en) * 1997-09-09 1999-03-23 Kubota Corp Manufacture of fiber-reinforced cement plate
DE19749849B4 (en) * 1997-11-11 2005-02-03 Kvaerner Panel Systems Gmbh Maschinen- Und Anlagenbau Process and plant for the production of single-sided surface-structured, plate-shaped composite materials
JPH11170229A (en) * 1997-12-12 1999-06-29 Okura Ind Co Ltd Manufacture of cement molding plate with protrusion and recess pattern
JPH11333816A (en) * 1998-05-28 1999-12-07 Sekisui Chem Co Ltd Manufacture of moldings, manufacturing device, and rotary brush for manufacturing device
JP4287943B2 (en) * 1999-03-17 2009-07-01 ニチハ株式会社 Lightweight inorganic molded body and method for producing the same
JP3225025B2 (en) 1999-03-17 2001-11-05 ニチハ株式会社 Wood cement board and method for producing the same
JP2000317921A (en) * 1999-05-13 2000-11-21 Okura Ind Co Ltd Manufacture of cement molding plate having protrusion and recess pattern
JP2000317923A (en) * 1999-05-13 2000-11-21 Okura Ind Co Ltd Manufacture of cement molding plate having protrusion and recess pattern
IT1313119B1 (en) * 1999-08-26 2002-06-17 Quarella Spa MANUFACTURE IN MULTILAYER COMPOSITE SLABS OF STONE GRANULES ERELATIVE MANUFACTURING PROCEDURE
CN1249283A (en) * 1999-10-25 2000-04-05 沈文杰 Fibre-reinforced cement slab and its preparing process
JP3434754B2 (en) * 1999-11-30 2003-08-11 ニチハ株式会社 Wood cement board manufacturing method
CN2420360Y (en) * 1999-12-22 2001-02-21 吉开平 Inorganic composite sandwich plate for building house
JP2001207584A (en) * 2000-01-31 2001-08-03 Nichiha Corp Colored building board and method for manufacturing
US6539643B1 (en) * 2000-02-28 2003-04-01 James Hardie Research Pty Limited Surface groove system for building sheets
CN100471667C (en) * 2001-11-28 2009-03-25 詹姆斯哈迪国际财金公司 Trough-edge building panel and method of manufacture
JP2003181821A (en) * 2001-12-19 2003-07-02 Matsushita Electric Works Ltd Forming method for inorganic board
JP4180861B2 (en) * 2002-08-30 2008-11-12 ニチハ株式会社 Wood cement board and manufacturing method thereof
JP4275921B2 (en) * 2002-09-27 2009-06-10 ニチハ株式会社 Manufacturing method of inorganic board
JP2004276315A (en) * 2003-03-13 2004-10-07 Nichiha Corp Extrusion-molded woody cement panel
DE102004017325A1 (en) * 2004-04-06 2005-10-27 Fennen, Wolfgang, Dipl.-Ing. Component, in particular plate-like component and method for producing a component, in particular a plate-like component
GB2424426A (en) * 2005-03-22 2006-09-27 Lafarge Roofing Technical Centers Ltd Insulated roof system
CN200992769Y (en) * 2006-02-07 2007-12-19 曾立富 Light cement slab
JP5348921B2 (en) * 2008-03-31 2013-11-20 ニチハ株式会社 Manufacturing method of wood cement board

Also Published As

Publication number Publication date
AU2008264147B2 (en) 2013-07-04
JP2009242189A (en) 2009-10-22
AU2008264147A1 (en) 2009-10-15
KR20110111276A (en) 2011-10-10
DE102008055110A1 (en) 2009-10-15
CA2647661C (en) 2013-05-14
CN101550743B (en) 2012-10-24
CA2647661A1 (en) 2009-09-30
RU2008144474A (en) 2010-05-20
RU2392401C1 (en) 2010-06-20
TW200940298A (en) 2009-10-01
DE102008055110B4 (en) 2020-06-18
TW201240786A (en) 2012-10-16
US20090242728A1 (en) 2009-10-01
CN101550743A (en) 2009-10-07
TWI382910B (en) 2013-01-21

Similar Documents

Publication Publication Date Title
JP5348921B2 (en) Manufacturing method of wood cement board
JP5548340B2 (en) Manufacturing method of wood cement board
CA2946371C (en) Gypsum hardened body, gypsum panel, method for manufacturing gypsum hardened body, and method for manufacturing gypsum board
JP5166750B2 (en) Manufacturing method of wood cement board
JP4119086B2 (en) Manufacturing method of wood cement board
KR20090104629A (en) A wooden cement plate
US20060108714A1 (en) Method for surface treatment of a substrate
JP6910777B2 (en) Manufacturing method of building materials
US20090309272A1 (en) Moulding device and production process
JP6910778B2 (en) Manufacturing method of building materials
CN113414979B (en) 3D printing method
JP4589782B2 (en) Wood cement board
JP2005131935A (en) Manufacturing method of colored building panel
JP2018162571A (en) Building board
RU2373060C2 (en) Method for production of architectural-artistic gypsum-foam plastic item
JP3225025B2 (en) Wood cement board and method for producing the same
JP2022172493A (en) Mold used for extrusion molding machine of building material
TW583035B (en) Waste regenerated products and method for manufacturing same
JPH11246276A (en) Lightweight cellular concrete panel and surface-working method thereof
JP4456848B2 (en) Manufacturing method of colored building board
JP5831876B2 (en) Lightweight cellular concrete panel and method for painting lightweight cellular concrete panel
KR20020077991A (en) Method and apparatus for producing an inorganic foam structure for use as a durable acoustical panel
JP2005131934A (en) Manufacturing method of colored building panel
JP2002166491A (en) Wood piece and cement laminate
JPH081624A (en) Manufacture of platelike inorganic curable material

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20101109

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130723

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130924

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20140513

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140519

R150 Certificate of patent or registration of utility model

Ref document number: 5548340

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150