JP4362405B2 - Manufacturing method of hard fiberboard - Google Patents
Manufacturing method of hard fiberboard Download PDFInfo
- Publication number
- JP4362405B2 JP4362405B2 JP2004102893A JP2004102893A JP4362405B2 JP 4362405 B2 JP4362405 B2 JP 4362405B2 JP 2004102893 A JP2004102893 A JP 2004102893A JP 2004102893 A JP2004102893 A JP 2004102893A JP 4362405 B2 JP4362405 B2 JP 4362405B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- semi
- hard
- weight
- mat
- 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.)
- Expired - Fee Related
Links
Landscapes
- Dry Formation Of Fiberboard And The Like (AREA)
- Nonwoven Fabrics (AREA)
- Paper (AREA)
Description
本発明は、硬質繊維板の製造方法に関する。 The present invention relates to a method for manufacturing a hard fiberboard.
従来、建築用の板材としては、木質合板やＭＤＦが用いられている。しかし、木質合板は、表面に傷が付きやすく、ＭＤＦは、熱や水に対する寸法安定性が悪い。このため、嵌合した実部に目隙（床材の収縮によって目地巾が大きくなった状態）が生じたり、床材の膨張により実部を突き合わせた部分が持ち上がるピックアップと呼ばれる現象が生じたりするという問題があった。 Conventionally, wood plywood or MDF has been used as a plate material for construction. However, wood plywood is easily scratched on the surface, and MDF has poor dimensional stability against heat and water. For this reason, a gap (a state in which the joint width is increased due to contraction of the flooring material) occurs in the mated real part, or a phenomenon called a pickup in which the part that abuts the real part is lifted due to the expansion of the flooring material occurs. There was a problem.
本発明の出願人は、これらの問題を解決すべく、優れた寸法安定性、耐水性、耐傷性及び靭性（耐衝撃性）を有する硬質繊維板の製造方法を特許出願（特許文献１及び２）している。これらの硬質繊維板の製造方法では、セミキュアマットに樹脂水溶液を含浸させてから熱圧プレスをしているので、セミキュアマット表面の樹脂水溶液によって、硬質繊維板が熱圧プレスの熱板に張り付き、製造効率が悪くなることがあった。このため、樹脂水溶液が張り付かないような剥離シートを熱圧プレスの熱板の表面に貼着したり、あるいは、樹脂水溶液に剥離剤を添加する必要がある。 In order to solve these problems, the applicant of the present invention has applied for a patent for a method for producing a hard fiberboard having excellent dimensional stability, water resistance, scratch resistance and toughness (impact resistance) (Patent Documents 1 and 2). )is doing. In these hard fiber board manufacturing methods, since the semi-cured mat is impregnated with a resin aqueous solution and then hot-pressed, the hard fiber board is transformed into a hot-pressed hot plate by the resin aqueous solution on the surface of the semi-cured mat. There were cases where the sticking and the production efficiency deteriorated. For this reason, it is necessary to stick a release sheet on which the aqueous resin solution does not stick to the surface of the hot plate of the hot press, or to add a release agent to the aqueous resin solution.
しかしながら、高温高圧のプレスをしても全く樹脂が貼り付かないような剥離シートは見当たらず、一方、剥離剤を使用すると、得られた硬質繊維板に化粧シートを貼着する場合など、硬質繊維板に接着剤を使用する際に、接着剤の種類によっては接着不良を起こす問題があった。
そこで、本発明は、製造効率が高く、優れた寸法安定性、耐水性、耐傷性及び靭性（耐衝撃性）を有する硬質繊維板を製造できる硬質繊維板の製造方法を提供することを課題とする。 Then, this invention makes it a subject to provide the manufacturing method of the hard fiber board which can manufacture the hard fiber board which has high manufacturing efficiency and has the outstanding dimensional stability, water resistance, scratch resistance, and toughness (impact resistance). To do.
本発明にかかる硬質繊維板の製造方法は、鉱物質繊維を含む繊維３５〜７０重量％と、無機粉状体２５〜５５重量％と、結合剤５〜２５重量％とを必須成分とするスラリーを湿式抄造及び乾燥して比重０．３〜０．９のセミキュアマットを得、前記セミキュアマットの両面に、樹脂率１０〜５０％の樹脂水溶液を片面につき３００ｇ／ｍ２以上含浸させた後、両面に厚さ０．２〜１ｍｍのシートを積層し、熱圧プレスで前記シートを一体化するとともに、比重１．２〜１．７、厚さ２〜６ｍｍに圧締する。 The method for producing a hard fiberboard according to the present invention is a slurry containing 35 to 70% by weight of fibers containing mineral fibers, 25 to 55% by weight of an inorganic powder, and 5 to 25% by weight of a binder. Was subjected to wet papermaking and drying to obtain a semi-cured mat having a specific gravity of 0.3 to 0.9, and both surfaces of the semi-cured mat were impregnated with 300 g / m 2 or more of a resin aqueous solution having a resin ratio of 10 to 50%. Thereafter, sheets having a thickness of 0.2 to 1 mm are laminated on both sides, and the sheets are integrated by hot pressing, and are pressed to a specific gravity of 1.2 to 1.7 and a thickness of 2 to 6 mm.
本発明によれば、シートが、セミキュアマットから染み出した樹脂水溶液を遮断して熱圧プレスの熱板に接触させない。このため、従来の製造方法のように熱圧プレスによって得られる硬質繊維板が熱板に張り付くことがなく、製造効率が低下しない。 According to the present invention, the sheet blocks the resin aqueous solution exuded from the semi-cured mat and does not contact the hot plate of the hot press. For this reason, the hard fiber board obtained by hot press like the conventional manufacturing method does not stick to a hot plate, and manufacturing efficiency does not fall.
また、本発明にかかる硬質繊維板の製造方法において、前記セミキュアマットの両面に、樹脂率１０〜５０％の樹脂水溶液を含浸させた後、さらに、その両面に、樹脂率４０〜６０％の樹脂水溶液を片面につき２００ｇ／ｍ２以下塗布し、前記シートを積層してもよい。 Moreover, in the manufacturing method of the hard fiber board concerning this invention, after impregnating the resin aqueous solution of resin rate 10-50% on both surfaces of the said semi-cure mat, Furthermore, resin rate 40-60% on both surfaces An aqueous resin solution may be applied to 200 g / m 2 or less per side and the sheets may be laminated.
本実施形態によれば、セミキュアマットの表面に塗布した高濃度の樹脂水溶液によって、シートを強固に接着できるとともに、セミキュアマットの表層及びシートに高濃度の樹脂を含浸させて強化できるので、耐傷性に優れた硬質繊維板が得られる。 According to this embodiment, the high-concentration resin aqueous solution applied to the surface of the semi-curing mat can firmly adhere the sheet, and the surface layer and the sheet of the semi-curing mat can be reinforced by impregnating the high-concentration resin, A hard fiberboard having excellent scratch resistance is obtained.
また、本発明にかかる硬質繊維板の製造方法において、前記シートの内少なくとも１枚が、厚さ０．２〜１ｍｍの木質単板であってもよい。 In the method for manufacturing a hard fiberboard according to the present invention, at least one of the sheets may be a wood veneer having a thickness of 0.2 to 1 mm.
本実施形態によれば、木質単板の高い曲げ強度を備えた硬質繊維板を製造するとともに、硬質繊維板に木質単板の美観を付与できる。 According to this embodiment, while producing the hard fiber board provided with the high bending strength of a wood veneer, the beauty of a wood veneer can be given to a hard fiber board.
また、本発明にかかる硬質繊維板の製造方法において、前記熱圧プレスした後、さらに、表面に化粧加工を施してもよい。 Moreover, in the manufacturing method of the hard fiber board concerning this invention, after the said hot press, you may give a cosmetic process further to the surface.
本実施形態によれば、美観においてより一層優れた硬質繊維板を製造できる。 According to this embodiment, it is possible to manufacture a hard fiberboard that is more excellent in aesthetics.
以上のように、本発明によれば、優れた寸法安定性、耐水性、耐傷性及び靭性（耐衝撃性）を有する硬質繊維板を高効率で製造できる。 As described above, according to the present invention, a hard fiberboard having excellent dimensional stability, water resistance, scratch resistance, and toughness (impact resistance) can be produced with high efficiency.
以下に、本発明の実施形態である硬質繊維板の製造方法を説明する。先ず、鉱物質繊維を含む繊維と、無機粉状体と、結合剤とを水中に投入し、これに撥水剤、消泡剤及び顔料等の添加剤を加え攪拌し、次いで、凝集剤等の補助添加剤を加えて固形分率が数％のスラリーを得る。さらに、このスラリーを長網式又は丸網式の抄造機で抄造して脱水し、熱風通風ドライヤーで乾燥させてセミキュアマットを得る。なお、乾燥させる前に、仮圧締（８０〜１１０℃、０．５〜０．７ＭＰａ、３０〜１５０秒）を行うと、セミキュアマットの剛性が上がり、ハンドリング性が向上する。 Below, the manufacturing method of the hard fiber board which is embodiment of this invention is demonstrated. First, fibers containing mineral fibers, an inorganic powder, and a binder are put into water, and additives such as a water repellent, an antifoaming agent and a pigment are added and stirred, and then a flocculant, etc. To obtain a slurry having a solid content of several percent. Further, the slurry is made by a long net type or a round net type paper machine, dehydrated, and dried by a hot air draft dryer to obtain a semi-cure mat. In addition, if it performs temporary pressing (80-110 degreeC, 0.5-0.7 MPa, 30-150 seconds) before making it dry, the rigidity of a semi-cure mat will rise and handling property will improve.
次に、セミキュアマットの表裏両面に、樹脂率が１０〜５０％の樹脂水溶液を片面につき３００ｇ／ｍ２以上塗布した後、両面にシートを積層する。次いで、１５０〜２５０℃、１〜３ＭＰａ、５〜２０分程度のプレススケジュールで熱圧プレスすることにより、両面にシートを一体化した、平均比重１．２〜１．７、厚さ２〜６ｍｍの硬質繊維板が得られる。このとき、シートを積層する前に、セミキュアマットの表裏両面に、さらに、４０〜６０％の高濃度の樹脂水溶液を少量塗布することが好ましい。高濃度の樹脂水溶液は、浸透性は良くないが、表裏に塗布してセミキュアマットの表層により多くの樹脂を含浸させることにより、得られる硬質繊維板の剛性をより高くできるとともに、シートに樹脂を含浸させて耐傷性を高められるからである。 Next, 300 g / m 2 or more of a resin aqueous solution having a resin ratio of 10 to 50% is applied to both sides of the semi-cured mat, and then sheets are laminated on both sides. Next, the sheet was integrated on both sides by hot pressing with a press schedule of 150 to 250 ° C., 1 to 3 MPa, 5 to 20 minutes, average specific gravity 1.2 to 1.7, thickness 2 to 6 mm. The hard fiberboard is obtained. At this time, it is preferable to apply a small amount of a 40 to 60% high-concentration resin aqueous solution to the front and back surfaces of the semi-cured mat before laminating the sheets. High-concentration resin aqueous solution does not have good permeability, but by applying it on the front and back and impregnating more resin with the surface layer of the semi-cure mat, the rigidity of the resulting hard fiberboard can be increased and the resin on the sheet This is because the flaw resistance can be improved by impregnating with.
熱圧プレスをする前に、０．２〜０．５ＭＰａ程度の圧力で数十秒〜２分程度の予備乾燥プレスを行った後、２〜３ＭＰａの熱圧プレスを行ってもよい。予備乾燥プレスを行えば、熱圧プレスにおいて、過剰な樹脂水溶液がセミキュアマットの端面から染み出してバリを生じることを防止できるからである。また、セミキュアマット中の水分を予め蒸発させて取り除くので、短時間の熱圧プレスでも水蒸気が残留せず、プレス圧力の除去とともに、水蒸気が瞬間的に膨張して硬質繊維板を破裂することがないからである。このような、熱圧プレスには面均一なプレスが必要であるので、単段のバッチ式または多段のバッチ式熱圧プレス機が好ましい。熱圧プレスによる圧締時の熱板の間の距離は、セミキュアマットの両側に、所定の厚みのディスタンスバーを配置することによって決定できる。 Before performing the hot-pressing, after performing a pre-drying press for about several tens of seconds to 2 minutes at a pressure of about 0.2 to 0.5 MPa, a hot-pressing of 2 to 3 MPa may be performed. This is because if the preliminary drying press is performed, it is possible to prevent excessive resin aqueous solution from seeping out from the end face of the semi-cured mat and causing burrs in the hot press. In addition, since the water in the semi-cure mat is removed by evaporation in advance, water vapor does not remain even in a short hot press, and with the removal of the press pressure, the water vapor instantaneously expands and bursts the hard fiber board. Because there is no. Since such a hot press requires a uniform press, a single-stage batch type or multi-stage batch type hot press is preferable. The distance between the hot plates at the time of pressing by the hot press can be determined by arranging a distance bar having a predetermined thickness on both sides of the semi-cured mat.
スラリーに配合する鉱物質繊維としては、例えば、ロックウール、スラグウール、ミネラルウール、ガラスウール、ガラス繊維等が挙げられ、これらを単体で、あるいは、複数を混合して用いる。また、繊維には耐熱性の有機繊維を含むことができ、有機繊維としては、例えば、ナイロン繊維、ビニロン繊維、テトロン繊維、ポリアミド繊維、ポリプロピレン繊維、ポリエチレンテレフタレート繊維、ポリエステル繊維、ポリウレタン繊維、ポリエチレン繊維、各種ゴム繊維及び木繊維等の２００℃でも溶融しない繊維が挙げられ、これらを単体で、あるいは、複数を混合して用いる。 Examples of the mineral fiber to be blended in the slurry include rock wool, slag wool, mineral wool, glass wool, glass fiber, and the like, and these are used alone or in combination. Further, the fiber can include a heat-resistant organic fiber. Examples of the organic fiber include nylon fiber, vinylon fiber, tetron fiber, polyamide fiber, polypropylene fiber, polyethylene terephthalate fiber, polyester fiber, polyurethane fiber, and polyethylene fiber. Examples thereof include fibers that do not melt even at 200 ° C., such as various rubber fibers and wood fibers, and these are used alone or in combination.
有機繊維と鉱物質繊維とは、合計して３５〜７０重量％、好ましくは４５〜６０重量％となる範囲で配合する必要がある。これは、有機繊維と鉱物質繊維との合計量が３５％未満であると、抄造したときにマット切れを起こしやすくなるとともに、脱水及び乾燥して得られたセミキュアマットの曲げ強度が非常に弱くなり、セミキュアマットのハンドリングが難しくなるからである。また、有機繊維と鉱物質繊維との合計量が７０重量％を超えると、相対的に添加される結合剤及び無機粉状体の添加量が少なくなるため、熱圧プレスしたときに密度が上がり難く、硬質繊維板の強度が不足するからである。 Organic fibers and mineral fibers need to be blended in a range of 35 to 70% by weight, preferably 45 to 60% by weight in total. This is because when the total amount of organic fibers and mineral fibers is less than 35%, the mat is likely to break when it is made, and the bending strength of the semi-cured mat obtained by dehydration and drying is very high. This is because it becomes weaker and it becomes difficult to handle the semi-cure mat. In addition, if the total amount of organic fibers and mineral fibers exceeds 70% by weight, the amount of binder and inorganic powder added relatively decreases, so the density increases when hot-pressed. It is difficult and the strength of the hard fiber board is insufficient.
鉱物質繊維は硬質繊維板の剛性を高める働きがあり、一方、有機繊維は硬質繊維板に靭性を付与する働きがある。有機繊維を一定重量添加した場合に、有機繊維が太くて長いほど靭性は高くなるが、細く短い有機繊維はあまり靭性に寄与しない。一方、細くて長い繊維は抄造しにくく、太くて短い繊維は、抄造適性がよい。従って、強度と抄造適正との両方を考慮して、最適な太さと長さとを決定する必要がある。抄造適正については、鉱物質繊維、結合剤、有機繊維及び無機粉状体の配合比により、微妙に異なるが、有機繊維は、長さ１〜５ｍｍ、太さは０．５〜４０デニール程度（１デニールは９００００メートルで１グラムの重量を持つ太さ）が好ましい。より好ましくは、長さ２〜３ｍｍ、太さ０．８〜２０デニール程度の有機繊維を使用するとよい。また、有機繊維の配合量が少ないと、硬質繊維板は硬くて脆い板となる。一方、有機繊維の配合量が多いと、スラリーの抄造時に凝集不良を起こし、密度が不均一になるとともに、相対的に鉱物質繊維の添加量が少なくなるため、硬質繊維板の剛性が不足する。このため、１５重量％以下の有機繊維を配合することにより、硬質繊維板に木材のような靭性を与えることが好ましい。 Mineral fibers have a function of increasing the rigidity of the hard fiber board, while organic fibers have a function of imparting toughness to the hard fiber board. When organic fibers are added at a constant weight, the thicker and longer the organic fibers, the higher the toughness, but the thin and short organic fibers do not contribute much to toughness. On the other hand, thin and long fibers are difficult to make paper, and thick and short fibers are good for paper making. Therefore, it is necessary to determine the optimum thickness and length in consideration of both strength and papermaking suitability. The paper making suitability varies slightly depending on the mixing ratio of mineral fiber, binder, organic fiber and inorganic powder, but the organic fiber has a length of 1 to 5 mm and a thickness of about 0.5 to 40 denier ( One denier is preferably 90,000 meters and has a weight of 1 gram). More preferably, organic fibers having a length of 2 to 3 mm and a thickness of about 0.8 to 20 denier may be used. Moreover, when there are few compounding quantities of an organic fiber, a hard fiber board will become a hard and brittle board. On the other hand, if the amount of organic fiber is large, cohesion failure occurs during slurry making, the density becomes non-uniform, and the amount of mineral fiber added is relatively small, so the rigidity of the hard fiber board is insufficient. . For this reason, it is preferable to give toughness like a wood to a hard fiber board by mix | blending 15 weight% or less organic fiber.
無機粉状体としては、比重の重い炭酸カルシウム、酸化アルミ、硫酸バリウム、バーミキュライト等や、比重の軽いシラス発泡体、シリカフラワー、ガラス発泡体等が挙げられ、これらを単体で、あるいは、複数を混合して用いることができる。 Examples of inorganic powders include calcium carbonate with a high specific gravity, aluminum oxide, barium sulfate, vermiculite and the like, and a shirasu foam, silica flower, glass foam, etc. with a low specific gravity. It can be used by mixing.
無機粉状体は、２５〜５５重量％となる範囲で配合する必要がある。これは、無機粉状体は、硬質繊維板を製造する過程で得られるセミキュアマットの強度に大きく寄与し、無機粉状体が２５重量％未満であると、得られたセミキュアマットの曲げ強度が弱くなり、セミキュアマットのハンドリングが困難になる。一方、無機粉状体が５５重量％を越えると、相対的に添加される鉱物質繊維の添加量が少なくなり、得られたセミキュアマットを、高温高圧条件下で熱圧プレスしても、密度が上がり難いからである。 It is necessary to mix the inorganic powder in the range of 25 to 55% by weight. This is because the inorganic powder greatly contributes to the strength of the semi-cured mat obtained in the process of producing the hard fiber board, and the bending of the obtained semi-cured mat is less than 25% by weight of the inorganic powder. The strength becomes weak and handling of the semi-cured mat becomes difficult. On the other hand, when the amount of the inorganic powder exceeds 55% by weight, the amount of mineral fiber added relatively decreases, and even when the obtained semi-cured mat is hot-pressed under high temperature and high pressure conditions, This is because the density is difficult to increase.
特に、シラス発泡体、シリカフラワー、ガラス発泡体等の比重の軽い無機粉状体は、２重量％以下とすることが好ましい。これは、無機粉状体は、比重調整の役目も果たし、硬質繊維板を重くするためには比重の重いものを使用し、軽くするためには比重の軽いものを使用する。比重の軽い無機粉状体を多量に使用すると、硬質繊維板に必要な均質性と耐久性とを損なうおそれがあるためである。また、着色顔料を無機粉状体の一部として使用して、硬質繊維板に着色を行うこともできる。 In particular, an inorganic powdery material having a light specific gravity such as shirasu foam, silica flour, glass foam or the like is preferably 2% by weight or less. This is because the inorganic powder also plays a role in adjusting the specific gravity. To make the hard fiber board heavy, a material having a high specific gravity is used, and to make it light, a material having a low specific gravity is used. This is because if a large amount of inorganic powder having a low specific gravity is used, the homogeneity and durability required for the hard fiberboard may be impaired. It is also possible to color the hard fiberboard using a color pigment as part of the inorganic powder.
結合剤としては、例えばメラミン樹脂、フェノール樹脂、エポキシ樹脂、イソシアネート樹脂、ポリビニールアルコール、アクリルエマルジョン又は酢酸ビニールエマルジョン又はこれらの変性物、澱粉（コーンスターチ等）、大豆粉、小麦粉等が挙げられ、これらを単体で、あるいは、複数を混合して用いる。 Examples of the binder include melamine resin, phenol resin, epoxy resin, isocyanate resin, polyvinyl alcohol, acrylic emulsion or vinyl acetate emulsion or modified products thereof, starch (corn starch, etc.), soybean flour, wheat flour, etc. Are used alone or in combination.
結合剤は、５〜２５重量％の範囲での配合する必要がある。これは、配合量が５重量％未満であると、セミキュアマットが強度不足を生じ、添加量が２５重量％を超えると、相対的に鉱物質繊維の添加量が少なくなり、特に、曲げ強度が弱くなるためである。 The binder should be blended in the range of 5 to 25% by weight. This is because when the blending amount is less than 5% by weight, the semi-cured mat has insufficient strength, and when the added amount exceeds 25% by weight, the amount of mineral fiber added is relatively small. Because it becomes weaker.
また、結合剤の中で、ポリビニールアルコール、アクリルエマルジョン又は酢酸ビニールエマルジョン又はこれらの変性物、澱粉、大豆粉、小麦粉、イソシアネート樹脂等の低温で反応するものは、スラリーを抄造、脱水、乾燥させて得られたセミキュアマットの曲げ性能を向上させ、ハンドリング性を向上させることが可能である。しかし、結合材の添加量が多くなると、最終的に得られる床材の寸法安定性が悪くなる。このため、低温で反応する結合剤の使用量は５重量％以下であることが望ましい。高温で反応する結合剤は、セミキュアマットを得る際の８０℃〜１１０℃の熱では完全に硬化せず、セミキュアマットを１５０〜２５０℃の高温高圧下における熱圧プレスで完全に硬化することにより、最終的に得られる硬質繊維板に優れた寸法安定性を与える。従って、セミキュアマットのハンドリング性を上げるために低温で反応する結合剤と、最終的に得られる硬質繊維板の強度及び耐水性を向上させるために高温で反応する結合剤との少なくとも２種類を併用することが望ましい。 Among binders, those that react at low temperatures such as polyvinyl alcohol, acrylic emulsion or vinyl acetate emulsion or modified products thereof, starch, soybean powder, wheat flour, isocyanate resin, etc., make slurry, dehydrated and dried. It is possible to improve the bending performance of the semi-cured mat obtained in this way and improve the handling properties. However, when the amount of the binder added is increased, the dimensional stability of the finally obtained flooring material is deteriorated. For this reason, the amount of the binder that reacts at a low temperature is desirably 5% by weight or less. The binder that reacts at high temperature does not completely cure by the heat of 80 ° C. to 110 ° C. when obtaining the semi-cured mat, but completely cures the semi-cured mat by the hot press under high temperature and high pressure of 150 to 250 ° C. By this, the dimensional stability excellent in the hard fiber board finally obtained is given. Therefore, at least two types of binders that react at a low temperature to improve the handling property of the semi-cured mat and binders that react at a high temperature to improve the strength and water resistance of the finally obtained hard fiberboard are used. It is desirable to use together.
樹脂水溶液は、ビニールウレタン系、フェノールエマルジョン、アクリルエマルジョン又は酢酸ビニールエマルジョン又はラテックスエマルジョン及びこれらの変性物等の水溶液が挙げられ、これらを単体で、あるいは、複数を混合して用いる。これらの樹脂は、硬質繊維板に耐水性を付与する働きを有している。 Examples of the resin aqueous solution include aqueous solutions of vinyl urethane, phenol emulsion, acrylic emulsion, vinyl acetate emulsion or latex emulsion, and modified products thereof. These are used alone or in combination. These resins have a function of imparting water resistance to the hard fiberboard.
セミキュアマットに含浸させる樹脂水溶液は、１０〜５０重量％、特に、１５〜４０重量％に調整することが好ましい。樹脂率が１０重量％未満であると、含浸させた樹脂水溶液による寸法安定性及び耐傷性の向上効果を期待できず、樹脂率が５０重量％を超えると、樹脂水溶液の浸透性が低下するからである。樹脂水溶液の中でも、ラテックスエマルジョンは、硬質繊維板の曲げ強度を向上させるので、他の樹脂と少量（５〜２５重量％）混合して使用することが好ましい。ただし、添加量が多くなると、サンダー適性が悪くなるため、２５重量％を超える添加量は好ましくない。また、サンダー適性を向上させるために、メラミン樹脂、フェノール樹脂、エポキシ樹脂等の硬質樹脂（５〜２５重量％）を添加してもよい。ただし、これらの樹脂の添加量が多すぎると、硬くて脆い性質となり、好ましくない。さらに、ロールプレスによる樹脂水溶液の内部への均一拡散の効果を高めるために、樹脂水溶液の浸透性を上げることを目的として浸透剤（界面活性剤の一種で、水で希釈された樹脂の表面張力を下げ、浸透性を上げる薬剤）を加えてもよい。 The resin aqueous solution impregnated in the semi-cured mat is preferably adjusted to 10 to 50% by weight, particularly 15 to 40% by weight. If the resin ratio is less than 10% by weight, the effect of improving the dimensional stability and scratch resistance by the impregnated resin aqueous solution cannot be expected, and if the resin ratio exceeds 50% by weight, the permeability of the resin aqueous solution decreases. It is. Among the resin aqueous solutions, the latex emulsion improves the bending strength of the hard fiberboard, so it is preferable to use a mixture with other resins in a small amount (5 to 25% by weight). However, if the addition amount increases, the suitability of the sander deteriorates, so an addition amount exceeding 25% by weight is not preferable. Moreover, in order to improve a sander suitability, you may add hard resins (5-25 weight%), such as a melamine resin, a phenol resin, and an epoxy resin. However, if the amount of these resins added is too large, the resin becomes hard and brittle, which is not preferable. Furthermore, in order to enhance the effect of uniform diffusion inside the aqueous resin solution by roll press, the penetrant (a kind of surfactant, a surface tension of the resin diluted with water) for the purpose of increasing the permeability of the aqueous resin solution. Lowering the drug and increasing the permeability).
以上のような浸透し易い樹脂水溶液を過剰に含浸させると、熱圧プレスにおいて、セミキュアマットの端面から流れ出して硬質繊維板の周辺で硬化してバリとなるため、所望の厚さと比重に応じた量を含浸させる必要がある。例えば、厚さ６ｍｍ、平均比重０．４のセミキュアマットを熱圧プレスにより３ｍｍに圧締する場合、表裏両面から含浸される樹脂水溶液の量が両面合計で８００ｇ／ｍ２を超えるとバリが発生し始め、１２００ｇ／ｍ２を超えると多量のバリとなってしまう。従って、厚さ６ｍｍ、平均比重０．４のセミキュアマットの場合、表裏両面それぞれに４００〜６００ｇ／ｍ２（両面合計で８００〜１０００ｇ／ｍ２）ずつ樹脂水溶液を塗布するのが望ましい。 When excessively impregnated with the resin solution that easily penetrates as described above, it flows out from the end face of the semi-cured mat in the hot-pressing press and hardens around the hard fiber board, so that it depends on the desired thickness and specific gravity. The amount to be impregnated. For example, when a semi-cure mat having a thickness of 6 mm and an average specific gravity of 0.4 is pressed to 3 mm by hot pressing, if the amount of the resin aqueous solution impregnated from both the front and back surfaces exceeds 800 g / m 2 in total, burrs are generated. It begins to occur, and if it exceeds 1200 g / m 2 , it becomes a large amount of burrs. Therefore, the thickness of 6 mm, when the semi-cured mat with an average specific gravity of 0.4, (in both total 800~1000g / m 2) 400~600g / m 2 on both sides respectively by it is desirable to apply the resin solution.
前記以上の樹脂水溶液を塗布し、バリを発生させない方法として、熱圧プレスする前に予備乾燥プレスを行う方法がある。これは、例えば、６ｍｍ厚さ、比重０．４のセミキュアマットに樹脂率１５％の樹脂水溶液を片面８００ｇ／ｍ２（両面トータルで１６００ｇ／ｍ２）塗布した場合、いきなり１９０℃、１．５ＭＰａの圧力をかけて押し潰すと、過剰な樹脂水溶液が流れ出して多量のバリが発生してしまうからである。しかし、０．２〜０．５ＭＰａ程度の圧力でセミキュアマットを押し潰さずに、１分程度、予備乾燥プレスを行って過剰な水分を蒸発させた後、２〜３ＭＰａ程度の圧力で熱圧プレスを行うと、バリの発生を大幅に抑えることができる。また、水蒸気の残留による硬質繊維板の破裂の防止にもなり好ましい。ただし、予備乾燥プレスせずに熱圧プレスする場合には圧力１．５ＭＰａで圧締できる条件でも、予備乾燥プレスを行うと、熱圧プレスには２〜３ＭＰａ程度の高い圧力が必要になることに注意が必要である。 As a method of applying the above resin aqueous solution and preventing the generation of burrs, there is a method of performing a preliminary drying press before hot pressing. For example, when a resin aqueous solution having a resin rate of 15% is applied to a semi-cured mat having a thickness of 6 mm and a specific gravity of 0.4 on one side of 800 g / m 2 (total of both sides: 1600 g / m 2 ), suddenly, 190 ° C., 1. This is because when the pressure of 5 MPa is applied and crushed, an excessive resin aqueous solution flows out and a large amount of burrs are generated. However, after crushing the semi-cure mat at a pressure of about 0.2 to 0.5 MPa, a pre-drying press is performed for about 1 minute to evaporate excess water, and then hot pressure is applied at a pressure of about 2 to 3 MPa. When pressing is performed, the generation of burrs can be significantly suppressed. It is also preferable because it prevents the hard fiber board from rupturing due to residual water vapor. However, if hot pressing is performed without predrying press, high pressure of about 2 to 3 MPa is required for hotpressing under predrying press even under conditions where the pressure can be reduced to 1.5 MPa. It is necessary to pay attention to.
また、セミキュアマットの少なくとも表裏どちらかの表面に凹部又はセミキュアマットを貫通する貫通穴を設けることによっても、バリの発生を大幅に抑制することが可能である。これは、過剰な樹脂水溶液が、凹部又は貫通穴の中に流れ出し、凹部又は貫通穴を埋めるように固まるためである。また、これらの凹部又は貫通穴は、樹脂水溶液が内部に浸透するのを補助する効果もある。ここで、設けた凹部又は貫通穴は、相互の距離が２ｃｍを超えると、浸透補助の効果が薄くなるため、２ｃｍ以下好ましくは１ｃｍ以下の間隔で設けることが望ましい。仮に２ｃｍの距離で凹部又は貫通穴を設けた場合、１０ｃｍ角内に２５個の凹部又は貫通穴を設けることになり、１ｃｍ間隔の場合は、１０ｃｍ角内に約１００個の凹部又は貫通穴を設けることになる。凹部又は貫通穴は平板に設けた多数の針状突起によりバッチ式のプレスで設けてもよいし、回転ロールの表面に設けられた多数の針状突起により連続的に加工してもよい。このようにして設ける凹部の直径を３．０ｍｍ以上にすると、熱圧プレスをした場合に裏面に凹凸が発生してしまうので、凹部は直径３．０ｍｍ以下でなければならない。また、直径１．５ｍｍ以上の凹部になると高温高圧条件下で熱圧プレスをしても凹部が完全には埋まらないので、凹部の直径は、０．５〜１．５ｍｍ程度が好ましい。片面だけに凹部を設けて得た硬質繊維板を床板に使用する場合は、凹部を設けた面を下にして使用するのが望ましく、凹部の深さは、セミキュアマット全体の厚さの半分以上の深さであることが好ましい。凹部を設けた面を表にして使用する場合は、凹部を１．０ｍｍ以下の直径およびセミキュアマットの厚さのほぼ半分の深さにすることが好ましい。これは、熱圧プレスで潰れて容積が小さくなる凹部全体を溢れ出た樹脂が埋め尽くし、外観上は、凹部が認識し難くなるからである。一方、貫通穴の場合は、直径１．５ｍｍ以上の穴になると、熱圧プレスをしても表裏ともに穴が完全には埋まらない。したがって、貫通穴の場合は、直径１．０ｍｍ以下にすることが好ましい。 Moreover, it is also possible to significantly suppress the occurrence of burrs by providing a recess or a through-hole penetrating the semi-cured mat on at least one of the front and back surfaces of the semi-cured mat. This is because an excessive resin aqueous solution flows out into the recess or the through hole and hardens so as to fill the recess or the through hole. These recesses or through holes also have an effect of assisting the penetration of the aqueous resin solution into the interior. Here, it is desirable that the provided recesses or through-holes are provided at intervals of 2 cm or less, preferably 1 cm or less because the effect of permeation assist is reduced when the mutual distance exceeds 2 cm. If a recess or through hole is provided at a distance of 2 cm, 25 recesses or through holes are provided within a 10 cm square, and if the interval is 1 cm, about 100 recesses or through holes are provided within a 10 cm square. Will be provided. The concave portion or the through hole may be provided by a batch-type press with a large number of needle-shaped protrusions provided on the flat plate, or may be continuously processed by a large number of needle-shaped protrusions provided on the surface of the rotating roll. If the diameter of the concave portion provided in this way is 3.0 mm or more, unevenness is generated on the back surface when hot pressing is performed, so the concave portion must have a diameter of 3.0 mm or less. In addition, when the concave portion has a diameter of 1.5 mm or more, the concave portion is not completely filled even if hot pressing is performed under a high temperature and high pressure condition. Therefore, the diameter of the concave portion is preferably about 0.5 to 1.5 mm. When using a hard fiberboard obtained by providing a recess on only one side for a floorboard, it is desirable to use the surface with the recess on the bottom, and the depth of the recess is half the thickness of the entire semi-cured mat. It is preferable that it is the above depth. In the case of using the surface provided with the concave portion as a table, it is preferable that the concave portion has a diameter of 1.0 mm or less and a depth substantially half the thickness of the semi-cured mat. This is because the resin overflowing the entire concave portion that is crushed by the hot-press press and fills up, and the concave portion is difficult to recognize in appearance. On the other hand, in the case of a through hole, if the hole has a diameter of 1.5 mm or more, the hole is not completely filled in both the front and back surfaces even if hot pressing is performed. Therefore, in the case of a through hole, the diameter is preferably 1.0 mm or less.
セミキュアマットの両面に積層するシートは、例えば、アクリル繊維、ガラス繊維、セラミック繊維、シリカファイバー繊維、アラミド繊維、木質単板等が用いられるが、１５０〜２５０℃、１〜３ＭＰａの条件に耐えられる繊維質のシートであれば使用できる。 For example, acrylic fiber, glass fiber, ceramic fiber, silica fiber fiber, aramid fiber, wood veneer, etc. are used as the sheet laminated on both sides of the semi-cured mat, but it can withstand conditions of 150 to 250 ° C. and 1 to 3 MPa. Any fibrous sheet can be used.
樹脂水溶液を含浸させたセミキュアマットに、さらに、高濃度の樹脂水溶液を少量、塗布する場合、少量塗布する樹脂水溶液は、樹脂率４０〜６０重量％とする。これは、浸透性を低くすることにより、シートに樹脂を含浸させて耐傷性を向上させながら、樹脂水溶液がシートの表面にまで達しないようにして、熱圧プレス機の熱板に硬質繊維板を付着させないようにするためである。 When a small amount of a high concentration resin aqueous solution is further applied to a semi-cure mat impregnated with a resin aqueous solution, the resin aqueous solution to be applied in a small amount has a resin ratio of 40 to 60% by weight. This is because the resin solution is impregnated into the sheet and the scratch resistance is improved by lowering the permeability so that the aqueous resin solution does not reach the surface of the sheet, and the hot plate of the hot press machine is a hard fiber board. This is to prevent adhesion.
以上のような条件で得られた硬質繊維板の片面又は両面に、さらに、化粧加工を施してもよい。化粧加工としては、化粧シートの貼着、塗装及びそれらの併用等が挙げられる。化粧シートとしては、色彩や模様を有する突き板、紙、樹脂含浸紙、オレフィンシート、ポリエチレンテレフタレートシート及びこれらの複合品等が挙げられる。塗装としては、例えば、ウレタン塗装、ＵＶ塗装、ＥＢ塗装等が挙げられる。また、化粧シートの上にさらに塗装を施してもよいし、予め塗装を施したシートを硬質繊維板に貼り付けてもよい。さらに、硬質繊維板に直接あるいは化粧シートの上から、Ｖ溝等の溝加工や面取り加工を施した後に塗装してもよい。 You may give a decorative process further to the single side | surface or both surfaces of the hard fiber board obtained on the above conditions. Examples of the cosmetic processing include sticking of a decorative sheet, painting, and a combination thereof. Examples of the decorative sheet include a veneer having a color and a pattern, paper, resin-impregnated paper, an olefin sheet, a polyethylene terephthalate sheet, and a composite product thereof. Examples of the coating include urethane coating, UV coating, and EB coating. Further, the decorative sheet may be further coated, or a pre-coated sheet may be attached to the hard fiberboard. Furthermore, you may apply | coat after giving a groove process and chamfering processes, such as a V-groove, to a hard fiber board directly or on a decorative sheet.
前述したように無機粉状体の一部に着色顔料を使用して硬質繊維板の内部の色を、化粧加工した表面の色に近似した色に着色すれば、硬質繊維板の表面に化粧シートを貼り、溝加工を行った後に透明なＵＶ塗装を行った場合にも、表面と溝部の色調に違和感のない硬質繊維板が得られる。また、表面に塗装のみを行った硬質繊維板でも、表面の塗装色と硬質繊維板内部の色とが近似していれば、硬質繊維板の表面に前記塗装の下にまで達する傷が付いた場合でも傷が目立ちにくい。 As described above, if a color pigment is used as a part of the inorganic powder to color the inside of the hard fiber board to a color similar to the color of the surface of the makeup, a decorative sheet is formed on the surface of the hard fiber board. Even when a transparent UV coating is applied after applying the groove and performing the groove processing, a hard fiber board having no sense of incongruity in the color tone of the surface and the groove portion can be obtained. In addition, even in the hard fiberboard that was only coated on the surface, if the surface paint color and the color inside the hard fiberboard were similar, the surface of the hard fiberboard was scratched down to the bottom of the paint Even if the scratches are not noticeable.
以下のような板材を実際に製作し、比較試験を行った。 The following plate materials were actually manufactured and subjected to a comparative test.
（実施例１）
５０重量％のロックウール（鉱物質繊維）と、４０重量％の炭酸カルシウム（無機粉状体）と、３重量％のスターチと、７重量％の粉体フェノール樹脂とを水中に投入し、固形成分５％のスラリーを得、これに消泡剤を微量添加し、攪拌した。次いで、このスラリーを長網式抄造機で抄造し、さらにサクションポンプで脱水し、含水率５０％の湿潤マットを得た。この湿潤マットを９０℃、０．７ＭＰａ、１分のプレススケジュールで熱圧プレスを行い、ウォーターカッターで１尺×３尺の大きさに切断してから更に２２０℃に調整した熱風ドライヤーで乾燥させ、含水率５％、厚さ６ｍｍ、比重０．４５のセミキュアマットを得た。
Example 1
50% by weight of rock wool (mineral fiber), 40% by weight of calcium carbonate (inorganic powder), 3% by weight of starch and 7% by weight of powdered phenolic resin are put into water and solid A 5% component slurry was obtained, and a small amount of an antifoaming agent was added thereto, followed by stirring. Next, this slurry was made with a long-mesh type paper machine and further dehydrated with a suction pump to obtain a wet mat with a moisture content of 50%. This wet mat is hot-pressed with a press schedule of 90 ° C, 0.7MPa, 1 minute, cut into 1x3 size with a water cutter, and then dried with a hot air dryer adjusted to 220 ° C. A semi-cured mat having a water content of 5%, a thickness of 6 mm and a specific gravity of 0.45 was obtained.
このセミキュアマットの両面に、それぞれ、浸透剤を１％添加した樹脂率２５％のアクリルエマルジョン樹脂水溶液５００ｇ／ｍ２ずつをフローコーターで塗布して含浸させた後、両面に厚さ０．２５ｍｍのカバ湿潤単板を積層した。この両側に厚さ３．０ｍｍのディスタンスバーを配置して、１９０℃、０．２ＭＰａ、１分の予備乾燥プレスを行った後、１９０℃、２．５ＭＰａ、１０分のプレススケジュールで熱圧プレスを行い、厚さ３．３ｍｍの硬質繊維板を得た。 Each surface of the semi-cured mat was impregnated by applying a flow coater with 500 g / m 2 of an acrylic emulsion resin aqueous solution having a resin ratio of 25% to which 1% of a penetrant was added, and then the thickness of both surfaces was 0.25 mm. Of wet wet veneer. Displacement bars with a thickness of 3.0 mm are arranged on both sides, and after pre-drying press at 190 ° C., 0.2 MPa for 1 minute, hot press with a press schedule of 190 ° C., 2.5 MPa for 10 minutes Then, a hard fiber board having a thickness of 3.3 mm was obtained.
そして、この硬質繊維板の両面にサンダーがけを行い、面均一な厚さ３．０ｍｍの硬質繊維板とした後、その表裏両面に、酢酸ビニールエマルジョンとイソシアネートとを混合した接着剤を使用して厚さ０．２５ｍｍのカバ乾燥単板を貼り付けた。さらに、このカバ乾燥単板の表面にＵＶ塗装を施して得た硬質繊維板をサンプルとした。 And after sanding on both sides of this hard fiber board to make a hard fiber board with a uniform surface thickness of 3.0 mm, use an adhesive mixed with vinyl acetate emulsion and isocyanate on both front and back sides A hip dry veneer having a thickness of 0.25 mm was attached. Further, a hard fiber board obtained by applying UV coating on the surface of the dried hippo board was used as a sample.
（実施例２）
５０重量％のロックウール（鉱物質繊維）と、４０重量％の炭酸カルシウム（無機粉状体）と、３重量％のスターチと、７重量％の粉体フェノール樹脂とを水中に投入し、固形成分５％のスラリーを得、これに消泡剤を微量添加し、攪拌した。次いで、このスラリーを長網式抄造機で抄造し、さらにサクションポンプで脱水し、含水率５０％の湿潤マットを得た。この湿潤マットを９０℃、０．７ＭＰａ、１分のプレススケジュールで熱圧プレスを行い、ウォーターカッターで１尺×３尺の大きさに切断してから更に２２０℃に調整した熱風ドライヤーで乾燥させ、含水率５％、厚さ６ｍｍ、比重０．４５のセミキュアマットを得た。
(Example 2)
50% by weight of rock wool (mineral fiber), 40% by weight of calcium carbonate (inorganic powder), 3% by weight of starch and 7% by weight of powdered phenolic resin are put into water and solid A 5% component slurry was obtained, and a small amount of an antifoaming agent was added thereto, followed by stirring. Next, this slurry was made with a long-mesh type paper machine and further dehydrated with a suction pump to obtain a wet mat with a moisture content of 50%. This wet mat is hot-pressed with a press schedule of 90 ° C, 0.7MPa, 1 minute, cut into 1x3 size with a water cutter, and then dried with a hot air dryer adjusted to 220 ° C. A semi-cured mat having a water content of 5%, a thickness of 6 mm and a specific gravity of 0.45 was obtained.
このセミキュアマットの両面に、それぞれ、浸透剤を１％添加した樹脂率２５％のアクリルエマルジョン樹脂水溶液５００ｇ／ｍ２ずつをフローコーターで塗布して含浸させた後、両面に厚さ０．６ｍｍのカバ乾燥単板を積層した。この両側に厚さ３．０ｍｍのディスタンスバーを配置して、１９０℃、０．２ＭＰａ、１分の予備乾燥プレスを行った後、１９０℃、２．５ＭＰａ、１０分のプレススケジュールで熱圧プレスを行い、厚さ３．３ｍｍの硬質繊維板を得た。 Each surface of the semi-cured mat was impregnated by applying a flow coater with 500 g / m 2 of an acrylic emulsion resin aqueous solution having a resin rate of 25% to which 1% of a penetrant was added, and then a thickness of 0.6 mm on both surfaces. The dried hippo veneer was laminated. Displacement bars with a thickness of 3.0 mm are arranged on both sides, and after pre-drying press at 190 ° C., 0.2 MPa for 1 minute, hot press with a press schedule of 190 ° C., 2.5 MPa for 10 minutes Then, a hard fiber board having a thickness of 3.3 mm was obtained.
そして、この硬質繊維板の両面にサンダーがけを行い、面均一な厚さ３．０ｍｍの硬質繊維板とした後、その表裏両面に、酢酸ビニールエマルジョンとイソシアネートとを混合した接着剤を使用して厚さ０．２５ｍｍのカバ乾燥単板を貼り付けた。さらに、このカバ乾燥単板の表面にＵＶ塗装を施して得た硬質繊維板をサンプルとした。 And after sanding on both sides of this hard fiber board to make a hard fiber board with a uniform surface thickness of 3.0 mm, use an adhesive mixed with vinyl acetate emulsion and isocyanate on both front and back sides A hip dry veneer having a thickness of 0.25 mm was attached. Further, a hard fiber board obtained by applying UV coating on the surface of the dried hippo board was used as a sample.
（比較例１）
厚さ３ｍｍのラワン合板(３ｐｌｙ)の表裏両面に、酢酸ビニールエマルジョンとイソシアネートとを混合した接着剤を使用して、厚さ０．２５ｍｍのカバ乾燥単板を貼り付けた。さらに、このカバ乾燥単板の表面にＵＶ塗装を施した硬質繊維板をサンプルとした。
(Comparative Example 1)
A dry dried veneer with a thickness of 0.25 mm was attached to both the front and back surfaces of a 3 mm thick lauan plywood (3ply) using an adhesive mixed with vinyl acetate emulsion and isocyanate. Furthermore, the hard fiber board which gave the UV coating to the surface of this cover dried single board was made into the sample.
（比較例２）
５０重量％のロックウール（鉱物質繊維）と、４０重量％の炭酸カルシウム（無機粉状体）と、３重量％のスターチと、７重量％の粉体フェノール樹脂とを水中に投入し、固形成分５％のスラリーを得、これに消泡剤を微量添加し、攪拌した。次いで、このスラリーを長網式抄造機で抄造し、さらにサクションポンプで脱水し、含水率５０％の湿潤マットを得た。この湿潤マットを９０℃、０．７ＭＰａ、１分のプレススケジュールで熱圧プレスを行い、ウォーターカッターで１尺×３尺の大きさに切断してから更に２２０℃に調整した熱風ドライヤーで乾燥させ、含水率５％、厚さ６ｍｍ、比重０．４５のセミキュアマットを得た。
(Comparative Example 2)
50% by weight of rock wool (mineral fiber), 40% by weight of calcium carbonate (inorganic powder), 3% by weight of starch and 7% by weight of powdered phenolic resin are put into water and solid A 5% component slurry was obtained, and a small amount of an antifoaming agent was added thereto, followed by stirring. Next, this slurry was made with a long-mesh type paper machine and further dehydrated with a suction pump to obtain a wet mat with a moisture content of 50%. This wet mat is hot-pressed with a press schedule of 90 ° C, 0.7MPa, 1 minute, cut into 1x3 size with a water cutter, and then dried with a hot air dryer adjusted to 220 ° C. A semi-cured mat having a water content of 5%, a thickness of 6 mm and a specific gravity of 0.45 was obtained.
このセミキュアマットに、浸透剤を１％添加した樹脂率２５％のアクリルエマルジョン樹脂水溶液を両面のそれぞれに５００ｇ／ｍ２ずつをフローコーターで塗布して含浸させた後、この両側に厚さ３．０ｍｍのディスタンスバーを配置して、表裏をＰＥＴシートで挟み込んで、１９０℃、０．２ＭＰａ、１分の予備乾燥プレスを行ってから、１９０℃、２．５ＭＰａ、１０分のプレススケジュールで熱圧プレスを行って、厚さ３．３ｍｍの硬質繊維板を得た。 The semi-cure mat was impregnated with a 25% resin emulsion solution containing 1% penetrant and impregnated with 500 g / m 2 on both sides with a flow coater. Place a 0.0mm distance bar, sandwich the front and back with PET sheets, perform a pre-drying press at 190 ° C, 0.2MPa for 1 minute, then heat at a press schedule of 190 ° C, 2.5MPa for 10 minutes A pressure press was performed to obtain a hard fiber board having a thickness of 3.3 mm.
そして、この硬質繊維板の両面にサンダーがけを行い、面均一な厚さ３．０ｍｍの硬質繊維板とした後、その表裏両面に、酢酸ビニールエマルジョンとイソシアネートとを混合した接着剤を使用して厚さ０．２５ｍｍのカバ乾燥単板を貼り付けた。さらに、このカバ乾燥単板の表面にＵＶ塗装を施して得た硬質繊維板をサンプルとした。 And after sanding on both sides of this hard fiber board to make a hard fiber board with a uniform surface thickness of 3.0 mm, use an adhesive mixed with vinyl acetate emulsion and isocyanate on both front and back sides A hip dry veneer having a thickness of 0.25 mm was attached. Further, a hard fiber board obtained by applying UV coating on the surface of the dried hippo board was used as a sample.
（製造状況）
以上のサンプルを製作する過程で、実施例１及び２は、熱圧プレスにおいても硬質繊維板が熱板に貼り付くこともなく、スムーズに作業可能であったが、比較例２は、ＰＥＴシートが硬質繊維板に張り付き、剥離できない場合があった。このことから、本発明の硬質繊維板の製造方法は、特に熱圧プレスにおける生産性が高いことが確認された。
(Production status)
In the process of producing the above samples, Examples 1 and 2 were able to work smoothly without sticking the hard fiberboard to the hot plate even in the hot press, but Comparative Example 2 was a PET sheet. May stick to the hard fiberboard and cannot be peeled off. From this, it was confirmed that the manufacturing method of the hard fiber board of the present invention has high productivity particularly in the hot press.
（比較試験）
以上の実施例１，２及び比較例１，２について、最大曲げ応力とヤング率とを測定した結果を示す。
(Comparative test)
The result of having measured the maximum bending stress and the Young's modulus about the above Examples 1 and 2 and Comparative Examples 1 and 2 is shown.
Claims (4)
前記セミキュアマットの両面に、樹脂率１０〜５０％の樹脂水溶液を片面につき３００ｇ／ｍ２以上含浸させた後、両面に厚さ０．２〜１ｍｍのシートを積層し、熱圧プレスで前記シートを一体化するとともに、比重１．２〜１．７、厚さ２〜６ｍｍに圧締することを特徴とする硬質繊維板の製造方法。 A slurry containing 35 to 70% by weight of fibers containing mineral fibers, 25 to 55% by weight of inorganic powders, and 5 to 25% by weight of a binder as an essential component is subjected to wet papermaking and drying to have a specific gravity of 0.3 to 0.9 semi-cure mat,
After impregnating 300 g / m 2 or more of a resin aqueous solution having a resin ratio of 10 to 50% on both sides of the semi-cured mat, a sheet having a thickness of 0.2 to 1 mm is laminated on both sides, A method for producing a hard fiberboard, wherein the sheets are integrated and pressed to a specific gravity of 1.2 to 1.7 and a thickness of 2 to 6 mm.
The method for manufacturing a hard fiberboard according to any one of claims 1 to 3, wherein the surface is further subjected to a decorative process after the hot-pressing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004102893A JP4362405B2 (en) | 2004-03-31 | 2004-03-31 | Manufacturing method of hard fiberboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004102893A JP4362405B2 (en) | 2004-03-31 | 2004-03-31 | Manufacturing method of hard fiberboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2005288713A JP2005288713A (en) | 2005-10-20 |
| JP4362405B2 true JP4362405B2 (en) | 2009-11-11 |
Family
ID=35322221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004102893A Expired - Fee Related JP4362405B2 (en) | 2004-03-31 | 2004-03-31 | Manufacturing method of hard fiberboard |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4362405B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008002031A (en) * | 2006-06-23 | 2008-01-10 | Daiken Trade & Ind Co Ltd | Mineral material fiber board and method for producing the same |
| JP2010121058A (en) | 2008-11-20 | 2010-06-03 | Nichiha Corp | Environmentally-friendly wet process type hard fiberboard |
| JP2010236107A (en) * | 2009-03-30 | 2010-10-21 | Daiken Corp | Method for producing inorganic board |
-
2004
- 2004-03-31 JP JP2004102893A patent/JP4362405B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005288713A (en) | 2005-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH07144307A (en) | Woody board, surface decorative woody board and manufacture thereof | |
| CA2957138C (en) | Composite board composed of wood material | |
| CA3014212C (en) | Composite board composed of wood material with a middle layer made of plywood | |
| US20040126550A1 (en) | Panel and process for producing a panel | |
| KR20100130571A (en) | Printing of non-woven fabrics and their use in composite materials | |
| KR20090127791A (en) | Woody electric heating panel | |
| JP4362401B2 (en) | Manufacturing method of hard fiberboard | |
| KR20100111849A (en) | The flooring fancy uni-ply veneer manufacture method and the flooring fancy uni-ply veneer | |
| JP4362405B2 (en) | Manufacturing method of hard fiberboard | |
| KR101243489B1 (en) | Structure of composite core for wood flooring | |
| JP2004300793A (en) | Decorative material and its manufacturing method | |
| JP4007938B2 (en) | Manufacturing method of cosmetic material | |
| JP2860062B2 (en) | Floor material production method | |
| WO1998049248A1 (en) | B-staged resin impregnated fiber mat plywood glue | |
| JPH0585627U (en) | Veneer | |
| JPH10114020A (en) | Lamination finishing material | |
| JP2004300796A (en) | Floor material and method of manufacturing the same | |
| JP3103819B2 (en) | Decorative plate and manufacturing method thereof | |
| JP2002036213A (en) | Core material board and finish material using the core material board | |
| KR101761534B1 (en) | A method for producing a straw or rice straw board having improved smoothness and a method for producing the straw or rice straw board | |
| WO2006120008A1 (en) | Resin composition comprising waste of resin impregnated material | |
| JP4155906B2 (en) | Manufacturing method of inorganic board and inorganic decorative board | |
| JP4190467B2 (en) | Manufacturing method of inorganic board | |
| JP4190468B2 (en) | Manufacturing method of inorganic board | |
| JP2008231788A (en) | Building board and method of manufacturing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20060831 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Effective date: 20090811 Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Effective date: 20090817 Free format text: JAPANESE INTERMEDIATE CODE: A61 |
|
| R150 | Certificate of patent (=grant) or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120821 Year of fee payment: 3 |
|
| LAPS | Cancellation because of no payment of annual fees |