JP2007031958A - Construction plate - Google Patents

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Publication number
JP2007031958A
JP2007031958A JP2005212763A JP2005212763A JP2007031958A JP 2007031958 A JP2007031958 A JP 2007031958A JP 2005212763 A JP2005212763 A JP 2005212763A JP 2005212763 A JP2005212763 A JP 2005212763A JP 2007031958 A JP2007031958 A JP 2007031958A
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Prior art keywords
veneer
mdf
wood
adhesive
decorative veneer
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JP2005212763A
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Japanese (ja)
Inventor
Yoshitaka Hashimoto
義啓 橋本
Hideki Kanai
英樹 金井
Tomoyoshi Kubota
智芳 久保田
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Priority to JP2005212763A priority Critical patent/JP2007031958A/en
Publication of JP2007031958A publication Critical patent/JP2007031958A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a woody decorative veneer sticking construction plate for preventing a puncture of MDF by preventing transfer of steam to the MDF from woody decorative veneer when sticking the woody decorative veneer to a surface of the MDF by an adhesive. <P>SOLUTION: A moisture permeability preventive layer 3 is formed on the surface of the MDF 1, and the woody decorative veneer 2 is placed on the moisture permeability preventive layer 3 via the adhesive 4, and is integrally stuck by a hot press, and can be stuck without causing the puncture in the MDF 1 even if the woody decorative veneer 2 of the high moisture content is used. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本本発明は、MDF(Medium Density Fiberboard=中密度繊維板)を基材として、その表面に木質化粧単板を貼着一体化してなる建築板に関するものである。   The present invention relates to a building board in which MDF (Medium Density Fiberboard = medium density fiberboard) is used as a base material, and a wooden decorative veneer is attached and integrated on the surface thereof.

MDFは木材の優れた性質を保有し木材の欠点を除いた加工性の良い材料として、合板、パーチクルボードに代って使用されるようになってきている。即ち、 MDFは、方向性がなく長さ方向と幅方向の強度差が小さくほぼ等く、長さ方向と幅方向の伸縮がほぼ等しいために狂いが生じ難く、幅広の長い板が得られる、という性質がある。更に、MDFは、木材のような節、割れのような欠点がなく表面が平滑な同品質のものが大量に得られる、という特徴がある。又、MDFは、加工性が木材とほぼ同等であり接着等も容易である。一方、MDFは吸湿性があり含水率の変化により、用途によっては反りやネジレが生じる場合がある。
特開2000−43196号公報(第2頁、図1)
MDF has been used in place of plywood and particle board as a material having excellent properties of wood and good workability excluding the defects of wood. That is, the MDF has no directionality, the strength difference between the length direction and the width direction is small and almost equal, and the expansion and contraction in the length direction and the width direction are almost equal, so that it is difficult to cause a deviation, and a wide long plate is obtained. It has the nature of Further, MDF is characterized in that it can be obtained in large quantities with the same quality with smooth surfaces and no defects like wood and cracks. Also, MDF has almost the same processability as wood and is easy to bond. On the other hand, MDF has a hygroscopic property, and a change in moisture content may cause warping or twisting depending on the application.
JP 2000-43196 (2nd page, FIG. 1)

上記特許文献1に記載されている木質系化粧板はMDF等を用いた扉などの反りを防止するものであり、MDFを含む木質板の少なくとも裏面に防湿樹脂層が形成され、表側に化粧シートが貼着一体化されたものである。化粧シートとしてはプラスチック系化粧シート、紙系化粧シートが用いられており、特に紙系化粧シートの場合には表面側にも防湿樹脂層を設けている。   The wood-based decorative board described in Patent Document 1 prevents warping of a door using MDF or the like, a moisture-proof resin layer is formed on at least the back surface of the wooden board containing MDF, and the decorative sheet is on the front side. Are integrated with each other. As the decorative sheet, a plastic decorative sheet or a paper decorative sheet is used. In particular, in the case of a paper decorative sheet, a moisture-proof resin layer is also provided on the surface side.

これに対して本願の図2にあるように木質化粧単板2を合板等の木質板に代わりMDF1に接着剤4を介して直接接着したものがある。同図に示すものは、MDF1に接着剤を塗布後、木質化粧単板2を載置してホットプレスで加熱圧締するものであるが、ホットプレス時に木質化粧単板2に含まれた水分がホットプレスの熱圧により水蒸気となってMDF1に移行する。   On the other hand, as shown in FIG. 2 of the present application, there is one in which the wooden decorative veneer 2 is directly bonded to the MDF 1 via an adhesive 4 instead of a wooden board such as plywood. In the figure, after applying an adhesive to the MDF 1, the wood veneer veneer 2 is placed and heated and pressed with a hot press, but the moisture contained in the wood veneer veneer 2 at the time of hot pressing Becomes steam due to the hot pressure of the hot press and moves to MDF1.

特に木質化粧単板2の含水率が高い場合には、ホットプレスの熱圧により木質化粧単板2の水分が蒸気となりMDF1に移行するために、MDF1の含水率が高くなる。そのためホットプレスを解圧するときに急激に圧力が下がる結果、MDF1内の水蒸気が膨張しMDF1にパンクを起こし局部的に膨れを生じることがある。   In particular, when the moisture content of the wood veneer veneer 2 is high, the moisture content of the wood veneer veneer 2 becomes steam due to the hot pressure of the hot press and shifts to MDF1, so that the moisture content of MDF1 increases. As a result, when the pressure is released suddenly when the hot press is released, the water vapor in the MDF 1 may expand and puncture the MDF 1 to cause local expansion.

これを防止するためにはMDF1に木質化粧単板2を貼着するに際し木質化粧単板2の含水率を少なくし、あるいはホットプレスを一時的に減圧して蒸気を逃がす二度押しプレスを行う必要がある。   In order to prevent this, when adhering the wood veneer veneer 2 to the MDF 1, the moisture content of the veneer veneer 2 is reduced, or the hot press is temporarily depressurized to perform the double press press to release the steam. There is a need.

しかし木質化粧単板2の含水率を減少させると、木質化粧単板2に反り、ネジレあるいは割れが生じる危険性が高く、高価な木質化粧単板2のロスが多くなる。またホットプレスによる二度押しプレスでは、プレス時間が長くなり手間を要するなどの問題点がある。   However, if the moisture content of the wooden decorative veneer 2 is reduced, the wooden decorative veneer 2 warps and there is a high risk of twisting or cracking, and the loss of the expensive wooden decorative veneer 2 increases. Further, the double press by the hot press has a problem that the press time is long and time is required.

本発明は、これらの問題点をMDFの表面に透湿防止層を設けることにより解決して、MDF1に木質化粧単板2を貼着するもので、優れた外観を有する建築板を提供するものである。   The present invention solves these problems by providing a moisture permeation preventive layer on the surface of the MDF, and sticks the wooden decorative veneer 2 to the MDF 1 to provide a building board having an excellent appearance. It is.

上記課題を解決するために、本発明に係る建築板の第一の特徴構成は、請求項1に記載した如く、基材であるMDF表面に透湿防止層を形成し、該透湿防止層上に接着剤を介して木質化粧単板を載置し、ホットプレスにより貼着一体化してなる点にある。   In order to solve the above-mentioned problems, the first characteristic configuration of the building board according to the present invention is that, as described in claim 1, a moisture permeation preventive layer is formed on the MDF surface as a base material, and the moisture permeation preventive layer is formed. A wood veneer veneer is placed on the top via an adhesive, and is bonded and integrated by hot pressing.

同第二の特徴構成は、請求項2に記載した如く、第一の特徴構成に加えて高含水率の木質化粧単板をMDF表面に載置して、ホットプレスする点にある。   The second characteristic configuration is that, in addition to the first characteristic configuration, a woody veneer veneer having a high water content is placed on the MDF surface and hot pressed.

請求項1に記載の建築板は前記構成であり、MDFの表面に透湿防止層が形成されているために、高含水率の木質化粧単板をMDFに貼着してもMDFへの蒸気の移行が少ない。したがってホットプレスを用いて木質化粧単板を貼着してもMDFに局部的な膨れ等が生じることが殆んどなく、また二度押しプレスの必要もないので生産工程が容易化される。   The building board according to claim 1 has the above-described configuration, and a moisture permeation preventing layer is formed on the surface of the MDF. Therefore, even if a high moisture content woody veneer veneer is attached to the MDF, steam to the MDF There are few transitions. Therefore, even if the wood veneer veneer is attached using a hot press, there is almost no local swelling or the like in the MDF, and the production process is facilitated because there is no need for a double press.

請求項2に記載の建築板は前記構成であり、含水率50%以上の高含水率の木質化粧単板を用いることが出来るので、フリッチからスライスして得られる木質化粧単板をそのまま乾燥することなく使用できる。そのために木質化粧単板に反り、ネジレ、割れが生じることがなくMDFに貼着することが出来るために木質化粧単板のロスの生じる割合は大幅に減少する。   The building board according to claim 2 has the above-described configuration, and a wood-made veneer veneer having a high moisture content of 50% or more can be used. Therefore, the veneer veneer obtained by slicing from the flitch is dried as it is. Can be used without Therefore, since the wood veneer veneer is warped, twisted and cracked, and can be attached to the MDF, the loss rate of the wood veneer veneer is greatly reduced.

以下、本発明の実施形態について図面を参照して、詳細に説明する。図1は本発明の実施例を示したものであり、1は基材として用いられるMDFである。2は表面に貼着される木質化粧単板であり、3はMDFの表面に樹脂を塗布することで形成される透湿防止層である。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of the present invention, where 1 is an MDF used as a substrate. 2 is a wood decorative veneer stuck on the surface, and 3 is a moisture permeation preventing layer formed by applying a resin to the surface of the MDF.

透湿防止層3は酢酸ビニール系樹脂が塗工性の点から適している。酢酸ビニール系樹脂としては酢酸ビニール樹脂のほか酢酸ビニールと塩化ビニールの共重合体、アクリル変性酢酸ビニール樹脂、エチレン酢酸ビニール共重合樹脂その他のものが使用される。その他ポリアミド系樹脂、ポリエステル系樹脂なども使用することも出来る。また樹脂以外の透湿防止剤としてポリエチレンワックスやパラフィンワックスを樹脂に添加することも透湿防止の効果がある
透湿防止層3を形成する樹脂は塗工性がよく、汚染の生じないもので後工程での刃物の損傷をおこさないものが好ましい。樹脂の塗工は公知のロールコーター、リバースコーター、フローコーター、グラビアコーター等が用いられ塗布量は用途、要求性能によるが50〜60g/■以上塗布される。これにより透湿防止
層3が形成されるが透湿防止層3の厚みが薄いと透湿性が低いためにパンクを生じる危険性があり、厚くなると乾燥時間が長くなり過品質となりコストが高くなる。
As the moisture permeation preventing layer 3, vinyl acetate resin is suitable from the viewpoint of coatability. As the vinyl acetate resin, vinyl acetate resin, vinyl acetate / vinyl chloride copolymer, acrylic modified vinyl acetate resin, ethylene vinyl acetate copolymer resin and others are used. Other polyamide resins, polyester resins and the like can also be used. Also, the addition of polyethylene wax or paraffin wax to the resin as a moisture permeation preventive agent other than the resin also has an effect of preventing moisture permeation. The resin forming the moisture permeation preventive layer 3 has good coatability and does not cause contamination. What does not cause damage to the blade in the subsequent process is preferable. A known roll coater, reverse coater, flow coater, gravure coater or the like is used for coating the resin, and the coating amount is 50-60 g / square or more depending on the application and required performance. As a result, the moisture permeation preventing layer 3 is formed. However, if the moisture permeation preventing layer 3 is thin, there is a risk of puncture due to low moisture permeability. .

樹脂が塗布されたMDF1は透湿防止層3を形成するように乾燥工程に送られる。乾燥には乾燥炉を用いるのが一般的であるがMDF1の表面にのみ透湿防止層3を形成するものであるから表面層に熱風を吹き付けることで透湿防止層3を形成する方法を採用すると熱効率が向上する。   The MDF 1 to which the resin is applied is sent to the drying process so as to form the moisture permeation preventing layer 3. A drying furnace is generally used for drying, but the moisture permeation preventive layer 3 is formed only on the surface of the MDF 1, so a method of forming the moisture permeation preventive layer 3 by blowing hot air on the surface layer is adopted. Then, thermal efficiency improves.

透湿防止層3が表面に形成されたMDF1は、この透湿防止層3上にホットプレス用の接着剤4が塗布される。ホットプレス用の接着剤4としては木質化粧単板2を貼着するのに用いられる公知の接着剤、たとえばアクリル系接着剤、ウレタン系接着剤、SBR系接着剤等が用いられる。   The MDF 1 having the moisture permeation preventive layer 3 formed on the surface is coated with an adhesive 4 for hot pressing on the moisture permeation preventive layer 3. As the adhesive 4 for hot pressing, a known adhesive used for adhering the wooden decorative veneer 2 such as an acrylic adhesive, a urethane adhesive, an SBR adhesive, or the like is used.

これらの接着剤4は溶液や分散液あるいは溶融物の形でMDF1に塗布される。塗布量は接着剤4の種類あるいは用途等によって異なるが大略60〜170g/■である。塗付方法はロールコーターやスプレイコーターなど公知の方法が使
用される。
These adhesives 4 are applied to the MDF 1 in the form of a solution, dispersion or melt. The amount applied varies depending on the type or use of the adhesive 4, but is generally 60 to 170 g / ■. As a coating method, a known method such as a roll coater or a spray coater is used.

木質化粧単板2としては一般に表面単板として用いられる美しい木目のスライス単板が用いられる。このうち散孔材であるカバ材等は蒸気が木目を通じて外部に放出されるので50%以上の含水率の木質化粧単板2であっても支障なく貼着出来る。   As the wood veneer veneer 2, a beautiful wood grain slice veneer generally used as a surface veneer is used. Among them, the cover material, which is a sprinkling material, can be pasted without any trouble even if it is a woody veneer 2 having a moisture content of 50% or more because steam is discharged to the outside through the grain.

木質化粧単板2が載置されたMDF1は次いでホットプレスに挿入され、加熱圧締される。圧締条件は100〜130℃、圧力は5〜7kg/c■であるがこ
れらは公知の条件であり、木質化粧単板2の種類や厚みにより適宜の条件が採用される。
The MDF 1 on which the woody veneer veneer 2 is placed is then inserted into a hot press and heated and pressed. The pressing conditions are 100 to 130 ° C. and the pressure is 5 to 7 kg / c 2, but these are known conditions, and appropriate conditions are adopted depending on the type and thickness of the wood veneer 2.

このようにして得られた木質化粧単板2が貼着されたMDF1を基材とする築板の用途に特に制限はない。なお、MDF1の裏面に透湿防止層3を設けることも可能であり扉の面材、建具、壁や床などの建築内装材、家具あるいはテレビ等のキャビネット等の広い範囲での使用が可能である。   There is no restriction | limiting in particular in the use of the building board which uses MDF1 to which the wooden decorative veneer 2 obtained in this way was stuck. It is possible to provide the moisture permeation preventive layer 3 on the back surface of the MDF 1, and it can be used in a wide range of door face materials, fittings, building interior materials such as walls and floors, furniture or cabinets such as televisions. is there.

次に、本発明を実施例により、さらに具体的に説明する。図1に示す構成の建築板を次のようにして製造した。厚み4mmのMDF1を用意し、市販の酢酸ビニール系樹脂を50g/■の割合で塗布した。このとき説明書に従い主剤100
に対し硬化剤5の割合で混入しておりロールコーターで塗布している。樹脂を塗布したMDF1は80℃の熱風炉を約20秒通過さすことで樹脂を乾燥させ、透湿防止層3をMDF1の表面に形成した。次いでロールコーターにてSBR系の接着剤4を100g/■の割合で塗布し、その上に木質化粧単板2をセットした
。木質化粧単板2は厚み0.4mmのカバ材でそのときの含水率は55%であった。木質化粧単板2をセットしたMDF1はホットプレスにて温度120℃、圧力6kg/■の条件下で約40秒圧締し、木質化粧単板2貼り建築板を得た。こ
の建築板の表面には、膨れは見られず良好なものであった。
Next, the present invention will be described more specifically with reference to examples. A building board having the structure shown in FIG. 1 was produced as follows. MDF1 having a thickness of 4 mm was prepared, and a commercially available vinyl acetate resin was applied at a rate of 50 g / ■. At this time, the main agent 100 according to the instructions
In contrast, it is mixed at a ratio of the curing agent 5 and applied by a roll coater. The MDF 1 coated with the resin was passed through a hot air oven at 80 ° C. for about 20 seconds to dry the resin, and the moisture permeation preventing layer 3 was formed on the surface of the MDF 1. Subsequently, the SBR type adhesive 4 was applied at a rate of 100 g / square by a roll coater, and the wooden decorative veneer 2 was set thereon. The wood veneer 2 was a cover material having a thickness of 0.4 mm, and the water content at that time was 55%. The MDF 1 on which the wood veneer veneer 2 was set was pressed with a hot press at a temperature of 120 ° C. and a pressure of 6 kg / ■ for about 40 seconds to obtain a wood veneer veneer 2 affixed building board. On the surface of this building board, no swelling was seen and it was good.

以上に説明したように本発明ではMDF1を基材とし、MDF1表面に透湿防止層3を形成することで木質化粧単板2の含水率調整が容易となりホットプレスでの二度押しプレスが不要となる等、プレス操作が簡易化される。また、木質化粧単板2の含水率調整による木質化粧単板2の反り、ネジレあるいは割れが生じ難くなるので、高価な木質化粧単板2のロスが少なくなり効率よく生産できるものである。   As described above, in the present invention, the moisture content of the wood decorative veneer 2 can be easily adjusted by using the MDF 1 as a base material and the moisture permeation preventing layer 3 is formed on the surface of the MDF 1. For example, the press operation is simplified. Further, warping, twisting or cracking of the wooden decorative veneer 2 due to adjustment of the moisture content of the wooden decorative veneer 2 is less likely to occur, so that loss of the expensive wooden decorative veneer 2 is reduced and production can be efficiently performed.

本発明に係る木質化粧単板を貼着したMDFを用いた建築板の形態例を示す断面図である。It is sectional drawing which shows the example of the form of the building board using MDF which stuck the wooden decorative veneer which concerns on this invention. 従来使用されている木質化粧単板を貼着したMDFを用いた建築板の一例を示す断面図である。It is sectional drawing which shows an example of the building board using MDF which stuck the wooden decorative veneer used conventionally.

符号の説明Explanation of symbols

1 MDF
2 木質化粧単板
3 透湿防止層
4 接着剤
1 MDF
2 Wood veneer 3 Moisture permeation prevention layer 4 Adhesive

Claims (2)

基材であるMDF表面に透湿防止層を形成し、該透湿防止層上に接着剤を介して木質化粧単板を載置し、ホットプレスにより貼着一体化してなる建築板。   A building board formed by forming a moisture permeation preventive layer on the MDF surface as a base material, placing a wood veneer veneer on the moisture permeation preventive layer via an adhesive, and sticking and integrating them with a hot press. 高含水率の木質化粧単板をMDF表面に載置して、ホットプレスする請求項1記載の建築板。   The building board according to claim 1, wherein the wood decorative veneer having a high water content is placed on the MDF surface and hot pressed.
JP2005212763A 2005-07-22 2005-07-22 Construction plate Pending JP2007031958A (en)

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CN103406951A (en) * 2013-08-14 2013-11-27 广西鹿寨北林胶合板有限公司 Production method for damp-proof full-eucalyptus laminated wood veneer
CN103406953A (en) * 2013-08-14 2013-11-27 广西南宁绿园北林木业有限公司 Production method of anti-freezing full-eucalyptus wood laminated veneer
CN103406949A (en) * 2013-08-14 2013-11-27 广西南宁绿园北林木业有限公司 Production method for all eucalyptus lamination board for wood floor
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009061680A (en) * 2007-09-06 2009-03-26 Daiken Trade & Ind Co Ltd Reinforced floor material and method of manufacturing the same
CN103406952A (en) * 2013-08-14 2013-11-27 广西鹿寨北林胶合板有限公司 Production method for full-eucalyptus laminated veneer for office furniture
CN103406951A (en) * 2013-08-14 2013-11-27 广西鹿寨北林胶合板有限公司 Production method for damp-proof full-eucalyptus laminated wood veneer
CN103406953A (en) * 2013-08-14 2013-11-27 广西南宁绿园北林木业有限公司 Production method of anti-freezing full-eucalyptus wood laminated veneer
CN103406949A (en) * 2013-08-14 2013-11-27 广西南宁绿园北林木业有限公司 Production method for all eucalyptus lamination board for wood floor
CN106088506A (en) * 2016-08-08 2016-11-09 常熟市嘉淀纺织有限公司 A kind of fireproof acoustic plate

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