JP2006272814A - Manufacturing method of woody fiberboard - Google Patents
Manufacturing method of woody fiberboard Download PDFInfo
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- JP2006272814A JP2006272814A JP2005097225A JP2005097225A JP2006272814A JP 2006272814 A JP2006272814 A JP 2006272814A JP 2005097225 A JP2005097225 A JP 2005097225A JP 2005097225 A JP2005097225 A JP 2005097225A JP 2006272814 A JP2006272814 A JP 2006272814A
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Abstract
Description
本発明は、木質繊維板の製造方法に関する。 The present invention relates to a method for manufacturing a wood fiber board.
住宅用内装材、家具、車両用内装材等に、木目模様を有する木質繊維板が使用されている。特に近年、凹凸により表現される木目模様に注目が集まっており、凹凸により表現される木目模様を有する木質繊維板を容易かつ安価に製造することが求められている。 Wood fiber boards having a grain pattern are used for interior materials for houses, furniture, interior materials for vehicles, and the like. In particular, in recent years, attention has been focused on the grain pattern expressed by the unevenness, and it is required to easily and inexpensively produce a wood fiber board having the grain pattern expressed by the unevenness.
このとき、従来の木目模様を有する木質繊維板の製造方法として、例えば木質繊維にバインダーとしての熱硬化性樹脂を混入してマット状に形成するマット形成工程と、前記マット形成工程により形成されたマットの上に複数本の着色した樹脂をひも状に押し出して同樹脂をマット上に塗着する押出工程と、前記押出工程により複数本の着色した樹脂が塗着されたマットをホットプレスするホットプレス工程とを備えたことを特徴とする木目模様を有する木質繊維板の製造方法が知られている（特許文献１）。 At this time, as a conventional method for producing a wood fiber board having a wood grain pattern, for example, a mat forming step of mixing a wood fiber with a thermosetting resin as a binder to form a mat, and the mat forming step An extrusion process in which a plurality of colored resins are extruded onto the mat in the form of a string and the resin is applied onto the mat, and a hot press is performed on the mat coated with a plurality of colored resins in the extrusion process. A manufacturing method of a wood fiberboard having a grain pattern characterized by comprising a pressing step is known (Patent Document 1).
しかしながら、上記製造方法は、複数の工程を必要とし煩雑であり、またコストがかかる。
従って、本発明の主な目的は、凹凸により表現される木目模様を有する木質繊維板を容易かつ安価に製造する方法の提供を目的とする。 Accordingly, a main object of the present invention is to provide a method for easily and inexpensively producing a wood fiber board having a grain pattern expressed by unevenness.
本発明者は、従来技術の問題点を解決するために鋭意研究を重ねた結果、特定の木質繊維板の製造方法が上記目的を達成できることを見出し、本発明を完成するに至った。 As a result of intensive studies to solve the problems of the prior art, the present inventor has found that a specific method for producing a wood fiber board can achieve the above object, and has completed the present invention.
すなわち、本発明は、下記の木質繊維板の製造方法に係る。
１． 凹凸により表現される木目模様を有する木質繊維板の製造方法であって、木質小片及び結着剤を含む原料混合物に対して、表面に凹凸を有するロールを押圧しながら回転させることにより、原料混合物を板状に成形しながら凹凸を賦型することを特徴とする製造方法。
２． 前記ロールが着色剤供給手段を有しており、原料混合物を板状に成形しながら凹凸を賦型するとともに、前記凹凸に同調した着色をさらに行う、前記項１に記載の製造方法。
That is, this invention concerns on the manufacturing method of the following wood fiber board.
1. A method for producing a wood fiberboard having a grain pattern represented by irregularities, wherein the raw material mixture is rotated while pressing a roll having irregularities on the surface against a raw material mixture containing a small piece of wood and a binder. A method of forming irregularities while forming a plate into a plate shape.
2. Item 2. The manufacturing method according to Item 1, wherein the roll has a colorant supply means, and forms irregularities while forming the raw material mixture into a plate shape, and further performs coloring in synchronization with the irregularities.
本発明に係る木質繊維板の製造方法は、木質小片と結着剤とを含む原料混合物に対して、表面に凹凸を有するロールを押圧しながら回転させることにより、凹凸により表現される木目模様を有する木質繊維板を連続的に製造することができる。つまり、凹凸により表現される木目模様を有する木質繊維板を容易かつ安価に製造できる。 The method for producing a wood fiberboard according to the present invention is a method for producing a wood grain pattern expressed by unevenness by rotating a raw material mixture containing a small piece of wood and a binder while pressing a roll having unevenness on the surface. The wood fiber board which has can be manufactured continuously. That is, it is possible to easily and inexpensively manufacture a wood fiber board having a wood grain pattern expressed by unevenness.
本発明は、凹凸により表現される木目模様を有する木質繊維板の製造方法であって、木質小片と結着剤とを含む原料混合物に対して、表面に凹凸を有するロールを押圧しながら回転させることにより、原料混合物を板状に成形しながら凹凸を賦型することを特徴とする。 The present invention is a method for producing a wood fiberboard having a grain pattern expressed by unevenness, and is rotated while pressing a roll having unevenness on a surface against a raw material mixture containing a small piece of wood and a binder. Thus, the unevenness is shaped while the raw material mixture is formed into a plate shape.
木質小片としては、特に限定されず、例えば木片、ストランド、おがくず、木毛、木質繊維束等が挙げられる。前記木質小片は、廃材であってもよい。特に、本発明では、廃材を用いることにより、木質繊維板をより安価に製造できる。これら木質小片は、単独又は２種以上で原料混合物に含まれていてもよい。 The wood pieces are not particularly limited, and examples thereof include wood pieces, strands, sawdust, wood hair, and wood fiber bundles. The wooden piece may be a waste material. In particular, in the present invention, the wood fiber board can be manufactured at a lower cost by using the waste material. These wooden pieces may be contained alone or in combination of two or more in the raw material mixture.
前記木質小片の大きさは、特に限定されるものではない。例えば、木質小片が片状の場合には通常縦２０〜５０ｍｍ、横１．０〜６．０ｍｍ、厚さ０．１〜１．０ｍｍ程度のものが使用される。また、木質小片が繊維状の場合には通常太さ０．１〜２．０ｍｍ、長さ１０〜３０ｍｍのものが使用される。木質小片が粉状の場合には、通常その粒径は０．０１〜５．０ｍｍの範囲にすればよい。 The size of the wooden piece is not particularly limited. For example, when a small piece of wood is used, one having a length of about 20 to 50 mm, a width of 1.0 to 6.0 mm, and a thickness of about 0.1 to 1.0 mm is usually used. Further, when the wooden piece is fibrous, a piece having a thickness of 0.1 to 2.0 mm and a length of 10 to 30 mm is usually used. In the case where the wooden piece is powdery, the particle size is usually in the range of 0.01 to 5.0 mm.
結着剤としては、特に限定されず、例えばユリア樹脂、メラミン樹脂、ユリア・メラミン共縮合樹脂、フェノール樹脂、メラミン変性フェノール樹脂、レゾルシノール樹脂、フェノール・レゾルシノール樹脂、水性高分子イソシアネート系樹脂等が挙げられる。これら結着剤は１種単独又は２種類以上混合して用いることができる。 The binder is not particularly limited, and examples thereof include urea resins, melamine resins, urea-melamine cocondensation resins, phenol resins, melamine-modified phenol resins, resorcinol resins, phenol-resorcinol resins, aqueous polymer isocyanate resins, and the like. It is done. These binders can be used singly or in combination of two or more.
前記結着剤の含有量は、特に限定されないが、木質小片１００重量部に対して２０〜４０重量部が好ましい。 Although content of the said binder is not specifically limited, 20-40 weight part is preferable with respect to 100 weight part of wood chips.
前記結着剤の使用方法は、特に限定されるものではなく、公知の方法に従えばよい。例えば、スプレー等により前記木質小片にまんべんなく噴霧する方法等が挙げられる。 The usage method of the said binder is not specifically limited, What is necessary is just to follow a well-known method. For example, a method of spraying the wooden pieces evenly by spraying or the like can be mentioned.
前記原料混合物は、さらに、撥水剤、防水剤、酸化防止剤、酸化抑制剤、低粘度化剤、接着改良材等を含んでいても良い。例えば、後述する着色剤を予め前記原料混合物中に含ませておくことも可能である。前記原料混合物中、撥水剤等の含有量は、特に限定されず、目的に応じて適宜設定すればよい。 The raw material mixture may further contain a water repellent, a waterproofing agent, an antioxidant, an oxidation inhibitor, a viscosity reducing agent, an adhesion improving material, and the like. For example, a colorant to be described later can be included in the raw material mixture in advance. In the raw material mixture, the content of the water repellent and the like is not particularly limited, and may be appropriately set depending on the purpose.
前記ロール表面の凹凸の深さは、目的とする木質繊維板の木目模様等に応じて適宜設定すればよい。 What is necessary is just to set suitably the depth of the unevenness | corrugation of the said roll surface according to the grain pattern etc. of the target wood fiber board.
前記ロール表面の凹凸の凹部の断面形状としては、特に限定されず、目的に応じて適宜設定すればよい。例えばＶ字状、Ｕ字状、四角形状、多角形状、曲面状等が挙げられる。凸部の断面形状は、特に限定されず、目的とする木質繊維板に応じて適宜設定すればよい。 The cross-sectional shape of the concave and convex portions on the surface of the roll is not particularly limited, and may be appropriately set depending on the purpose. For example, a V shape, a U shape, a square shape, a polygonal shape, a curved surface shape, and the like can be given. The cross-sectional shape of the convex portion is not particularly limited, and may be appropriately set according to the target wood fiber board.
前記ロールの材質は、本発明の効果を妨げない範囲であればよく、特に限定されるものではない。 The material of the said roll should just be a range which does not prevent the effect of this invention, and is not specifically limited.
前記ロールのロール径は、特に限定されず、状況に応じて適宜設定すればよい。 The roll diameter of the roll is not particularly limited, and may be set as appropriate according to the situation.
前記ロールの重さは、例えば所望の凹凸形状、木質小片の種類等に応じて適宜設定することができる。 The weight of the roll can be appropriately set according to, for example, a desired uneven shape, a kind of wood piece, and the like.
ロールを押圧する際の圧力は、特に限定されないが、面圧換算で、２０〜４０ｋｇ／ｃｍ２が好ましい。ロールを押圧する際の圧力を２０〜４０ｋｇ／ｃｍ２とすることにより、より確実に原料混合物を板状に成形しながら凹凸を賦型することができる。 Although the pressure at the time of pressing a roll is not specifically limited, 20-40 kg / cm < 2 > is preferable in conversion of surface pressure. By setting the pressure at the time of pressing the roll to 20 to 40 kg / cm 2 , the unevenness can be shaped while forming the raw material mixture into a plate more reliably.
ロールの回転速度は、特に限定されず、前記ロールを押圧する際の圧力等に応じて適宜設定すればよい。 The rotation speed of the roll is not particularly limited, and may be set as appropriate according to the pressure when the roll is pressed.
本発明の製造方法で使用するロールの数は、特に限定されず、目的に応じて適宜設定すればよい。例えば、２以上のロールを同時に使用することにより、目的の凹凸を賦型できる場合がある。 The number of rolls used in the production method of the present invention is not particularly limited, and may be set as appropriate according to the purpose. For example, by using two or more rolls at the same time, the target unevenness may be shaped.
前記原料混合物に対して、前記ロールを押圧しながら回転させる方法としては、特に限定されず、公知の技術を適宜採用すればよい。例えば、図１に示すように、運搬手段により原料混合物を運搬し、設置された前記ロールを押圧しながら回転させる方法が挙げられる。前記運搬手段としては、例えばベルトコンベア等が挙げられる。 A method for rotating the roll while pressing the roll with respect to the raw material mixture is not particularly limited, and a known technique may be adopted as appropriate. For example, as shown in FIG. 1, there is a method in which a raw material mixture is transported by transporting means and rotated while pressing the installed roll. Examples of the conveying means include a belt conveyor.
前記ロールを押圧しながら回転させることにより、前記原料混合物を板状に成形しながら凹凸を賦型することができる。 By rotating while pressing the roll, the unevenness can be formed while the raw material mixture is formed into a plate shape.
本発明では、着色をさらに行うことにより、より目的に応じた木目模様を有する木質繊維板を製造できる。 In this invention, the wood fiber board which has the grain pattern according to the objective more can be manufactured by coloring further.
着色を行う方法としては、特に限定されず、例えば、上述したように、ロールを押圧する前に、着色剤を予め原料混合物に含ませておいてもよい。また、ロールを押圧しながら回転させる際に、ロール表面に着色剤を掛け流してもよい。さらに、ロール表面に着色剤を予め付着させておいてロールを押圧しながら回転させることにより着色を行ってもよい。当然、木質繊維板製造後に着色を行ってもよい。特に、本発明では、ロールが着色剤供給手段を有することが好ましい。前記着色剤供給手段により着色を行うことにより、原料混合物を板状に成形しながら凹凸を賦型するとともに、前記凹凸に同調した着色をさらに行うことができる。 The method for coloring is not particularly limited. For example, as described above, a colorant may be included in the raw material mixture in advance before pressing the roll. Further, when the roll is rotated while being pressed, a colorant may be poured over the roll surface. Furthermore, coloring may be performed by rotating a roll while pressing a roll with a colorant attached in advance to the roll surface. Naturally, coloring may be performed after the production of the wood fiber board. In particular, in the present invention, it is preferable that the roll has a colorant supply means. By coloring with the colorant supply means, the unevenness can be shaped while the raw material mixture is formed into a plate shape, and coloring in synchronization with the unevenness can be further performed.
着色剤供給手段としては、特に限定されず、状況に応じて適宜設定すればよい。例えば、図２に示すように、表面に着色剤供給口を設け、内部に着色剤を充填したロールを用い、その供給口を通じて着色剤を供給する手法が挙げられる。特に、前記手法のように、ロール表面に着色剤供給口を設けると、より確実に凹凸に同調した着色を行うことができる。具体的には、ロールを押圧するのと同時に、着色剤を供給することもできるし、ロールの回転速度を調節することによって、遠心力により着色剤を原料混合物に供給することもできる。前記供給口は、ロール表面の凹部又は凸部のいずれに設けられていてもよく、特に限定されるものではない。 The colorant supply means is not particularly limited and may be set as appropriate according to the situation. For example, as shown in FIG. 2, there is a method in which a colorant supply port is provided on the surface, a roll filled with the colorant is used, and the colorant is supplied through the supply port. In particular, when a colorant supply port is provided on the roll surface as in the above-described method, it is possible to more reliably perform coloring in synchronization with the unevenness. Specifically, the colorant can be supplied simultaneously with pressing the roll, or the colorant can be supplied to the raw material mixture by centrifugal force by adjusting the rotation speed of the roll. The supply port may be provided in any of a concave portion or a convex portion on the roll surface, and is not particularly limited.
使用する着色剤としては、特に限定されず、例えば染料、顔料等が挙げられる。染料としては、例えば、直接染料、酸性染料、油性染料、アルコール溶性染料、塩基性染料等が挙げられる。顔料としては、例えば不溶性アゾ赤色顔料、銅フタロシアニン青色顔料、不溶性アゾ黄色顔料、カーボンブラック顔料等が挙げられる。前記着色剤は単独又は二種類以上で混合して使用することができる。 The colorant to be used is not particularly limited, and examples thereof include dyes and pigments. Examples of the dye include direct dyes, acid dyes, oil-based dyes, alcohol-soluble dyes, and basic dyes. Examples of the pigment include insoluble azo red pigments, copper phthalocyanine blue pigments, insoluble azo yellow pigments, and carbon black pigments. The colorants can be used alone or in combination of two or more.
ロールが着色剤供給手段を有する場合の着色剤の使用量は、特に限定されず、目的とする木目模様に応じて適宜設定できる。 The amount of the colorant used when the roll has the colorant supply means is not particularly limited, and can be appropriately set according to the target wood grain pattern.
ロールを押圧しながら回転した後、得られた木質繊維板に乾燥処理を施しても良い。乾燥処理の方法は、特に限定されず、公知の手段を採用すればよい。 After rotating while pressing the roll, the obtained wood fiber board may be dried. The method for the drying treatment is not particularly limited, and a known means may be employed.
本発明の製造方法によって得られた木質繊維板は、その使用目的に応じて、木質繊維板の厚さ、密度、曲げ強度等を適宜選択することによって、各種用途に適用することができる。例えば木質繊維板の密度を０．３５〜０．８ｇ／ｃｍ３とすることにより、ＭＤＦ（中密度繊維板）を製造することができる。 The wood fiberboard obtained by the production method of the present invention can be applied to various uses by appropriately selecting the thickness, density, bending strength, etc. of the wood fiberboard according to the purpose of use. For example, MDF (medium density fiber board) can be manufactured by setting the density of a wood fiber board to 0.35-0.8 g / cm < 3 >.
さらに、木質繊維板の表面を研磨することにより、意匠性をさらに向上させることができる。研磨方法としては、ベルトサンダー、ハンドサンダー、プレーナーなどの研削機械により、表面を平滑に研磨する方法がある。 Furthermore, the design can be further improved by polishing the surface of the wood fiber board. As a polishing method, there is a method of polishing the surface smoothly with a grinding machine such as a belt sander, a hand sander, or a planar.
以下に実施例を示し、本発明をより具体的に説明する。ただし、本発明の範囲は、実施例に限定されない。 Hereinafter, the present invention will be described in more detail with reference to examples. However, the scope of the present invention is not limited to the examples.
原料混合物の調製
おがくずとフェノール樹脂（結着剤）とを混合することにより、原料混合物を調製した。結着剤の含有量は、おがくず１００重量部に対して３０重量部とした。
Preparation of raw material mixture A raw material mixture was prepared by mixing sawdust and phenolic resin (binder). The content of the binder was 30 parts by weight with respect to 100 parts by weight of sawdust.
ロール
内部に着色剤収容部、表面に凹凸及び着色剤供給口を備えた金属ロールを使用した。前記金属ロールのロール径は、直径２９．６ｃｍ、重さは、３５０ｋｇとした。着色剤供給口は、賦型する凹凸に同調した着色が可能な位置に設けられており、凹凸を賦型するのと同時に着色できるように設定した。
A metal roll provided with a colorant accommodating portion inside the roll and unevenness and a colorant supply port on the surface was used. The roll diameter of the metal roll was 29.6 cm, and the weight was 350 kg. The colorant supply port is provided at a position where coloring can be performed in synchronization with the irregularities to be shaped, and is set so that the irregularities can be colored simultaneously with shaping.
＜実施例１＞
前記着色剤収容部に、カーボンブラック顔料を前記おがくず１００重量部に対して３０重量部充填した。前記原料混合物をベルトコンベア上に載せ、ベルトコンベアの先に前記ロールを設置した。
ロールの位置に来た原料混合物を、原料混合物を移動方向に押し出す向きに回転する前記ロールにより押圧した。押圧時のロールの圧力は、面圧換算で、２０〜３０ｋｇ／ｃｍ２、ロールの回転速度は、２２ｒｐｍとした。
上記過程を経て、縦２４０ｃｍ×横１２０ｃｍ×厚み０．６ｃｍの木質繊維板を得た。
得られた木質繊維板は、凹凸により表現される木目模様を有しており、さらに前記凹凸に同調した着色を有していた。
<Example 1>
The colorant container was filled with 30 parts by weight of carbon black pigment with respect to 100 parts by weight of the sawdust. The raw material mixture was placed on a belt conveyor, and the roll was installed at the end of the belt conveyor.
The raw material mixture that came to the position of the roll was pressed by the roll rotating in the direction of extruding the raw material mixture in the moving direction. The pressure of the roll at the time of pressing was 20-30 kg / cm 2 in terms of surface pressure, and the rotation speed of the roll was 22 rpm.
Through the above process, a wood fiber board having a length of 240 cm, a width of 120 cm, and a thickness of 0.6 cm was obtained.
The obtained wood fiberboard had a wood grain pattern expressed by the unevenness, and further had a coloring that was synchronized with the unevenness.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008173807A (en) * | 2007-01-17 | 2008-07-31 | Matsushita Electric Works Ltd | Method for producing decorative particle board and decorative particle board |
| KR101260581B1 (en) * | 2010-11-15 | 2013-05-06 | 주식회사 라비채 | Natural wood pattern forming device and forming method using thereof |
| JP2018069670A (en) * | 2016-11-02 | 2018-05-10 | 株式会社Ｌｉｘｉｌ | Fiber board |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101695211B1 (en) * | 2015-06-25 | 2017-01-12 | 주식회사 케이디우드테크 | Multi-color painting method for building element having convexo-concave shape |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11198111A (en) * | 1998-01-20 | 1999-07-27 | Dainippon Printing Co Ltd | Preparation of decorative sheet |
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- 2005-03-30 JP JP2005097225A patent/JP4596953B2/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11198111A (en) * | 1998-01-20 | 1999-07-27 | Dainippon Printing Co Ltd | Preparation of decorative sheet |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008173807A (en) * | 2007-01-17 | 2008-07-31 | Matsushita Electric Works Ltd | Method for producing decorative particle board and decorative particle board |
| KR101260581B1 (en) * | 2010-11-15 | 2013-05-06 | 주식회사 라비채 | Natural wood pattern forming device and forming method using thereof |
| JP2018069670A (en) * | 2016-11-02 | 2018-05-10 | 株式会社Ｌｉｘｉｌ | Fiber board |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4596953B2 (en) | 2010-12-15 |
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