JPS6371301A - Manufacture of reinforced woody decorative material - Google Patents
Manufacture of reinforced woody decorative materialInfo
- Publication number
- JPS6371301A JPS6371301A JP21502586A JP21502586A JPS6371301A JP S6371301 A JPS6371301 A JP S6371301A JP 21502586 A JP21502586 A JP 21502586A JP 21502586 A JP21502586 A JP 21502586A JP S6371301 A JPS6371301 A JP S6371301A
- Authority
- JP
- Japan
- Prior art keywords
- veneer
- nonwoven fabric
- synthetic resin
- adhesive
- decorative material
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims description 18
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000004745 nonwoven fabric Substances 0.000 claims description 26
- 229920003002 synthetic resin Polymers 0.000 claims description 19
- 239000000057 synthetic resin Substances 0.000 claims description 19
- 230000001070 adhesive effect Effects 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 10
- 239000002023 wood Substances 0.000 claims description 10
- 239000011120 plywood Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 229920005672 polyolefin resin Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 description 15
- -1 polyethylene Polymers 0.000 description 6
- 229920000098 polyolefin Polymers 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 235000000405 Pinus densiflora Nutrition 0.000 description 3
- 240000008670 Pinus densiflora Species 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004826 Synthetic adhesive Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- VCUFZILGIRCDQQ-KRWDZBQOSA-N N-[[(5S)-2-oxo-3-(2-oxo-3H-1,3-benzoxazol-6-yl)-1,3-oxazolidin-5-yl]methyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C1O[C@H](CN1C1=CC2=C(NC(O2)=O)C=C1)CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F VCUFZILGIRCDQQ-KRWDZBQOSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
Landscapes
- Finished Plywoods (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は合成樹脂で強化した木質強化薄板の製造方法に
関し、特に、木質薄板として板目薄板を使用した場合に
顕著な効果を発揮する強化木質化粧材の製造方法に関す
る。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for producing a reinforced wooden thin board reinforced with a synthetic resin, and in particular, to a method for producing a reinforced wood thin board that is particularly effective when a grained thin board is used as the wood thin board. This invention relates to a method for producing decorative wood materials.
（従来の技術）
従来、木質化粧材（以下単機とする）を合成樹脂に浸漬
したり、単板に樹脂を塗布し、これを合板の表面に積層
し加熱圧締して、耐薬品性、耐摩耗性、耐久性等に優れ
た化粧板とすることが知られている。このような木材と
合成樹脂の複合化（ウッド・プラスチック・コンビネー
ション、以下ＷＰＣと略す）は、使用する単板が柾目の
場合には、比較的容易である。これは、柾目の場合には
、木材の異方性が比較的規則的に現れるためと考えう前
に行う乾燥工程で、著しく単板が反ったり曲ったりして
、操業性が低下する上、合板等の基材表面への貼着時に
、樹脂含浸薄板が割れたり、貼着後にひび割れが発生す
るという欠点があった。(Prior art) Conventionally, wood decorative materials (hereinafter referred to as single machines) are dipped in synthetic resin, or a veneer is coated with resin, and this is laminated on the surface of plywood and heat-pressed to improve chemical resistance, It is known that decorative laminates can be made with excellent abrasion resistance and durability. Such a composite of wood and synthetic resin (wood-plastic combination, hereinafter abbreviated as WPC) is relatively easy if the veneer used is straight-grained. This is because in the case of straight-grained wood, the anisotropy of the wood appears relatively regularly.During the drying process that is performed beforehand, the veneer will warp or bend significantly, reducing operability. There have been disadvantages in that the resin-impregnated thin plate breaks when attached to the surface of a base material such as plywood, and cracks occur after attachment.
かかる欠点を解決する方法として、従来、単板の裏面に
各種接着剤によって紙等の裏打ち材を貼着する事が行わ
れている。この方法を採用する場合には、単板に接着剤
を塗布した後裏打ち材を貼着するか、接着剤を予め塗布
した裏打ち材を貼着する。しかしながら、前者の場合に
は単板が薄層化する昨今においては、技術的難易度が高
くなる傾向がある一方、後者の場合には製造コストが高
くなるという欠点があり、更に改良された方法が求めら
れていた。Conventionally, as a method to solve this drawback, a backing material such as paper is attached to the back side of the veneer using various adhesives. When this method is adopted, a backing material is applied after applying adhesive to the veneer, or a backing material to which adhesive has been applied in advance is applied. However, in the former case, there is a tendency for the technical difficulty to increase as veneers become thinner these days, while in the latter case, the manufacturing cost increases, and further improved methods are needed. was required.
本発明者等は、かかる従来の欠点を解決すべく鋭意検討
した結果、裏打ち材として不織布を使用した場合には、
安価且つ容易に単板を強化し、反りや曲がりを防止する
ことができること、及び上記単板と不織布の接着に際し
、単板の含水率を調整した上で、ポリオレフィンを介し
て熱圧着した場合には作業性が良いのみならず、次の樹
脂含浸工程に移行する前に通常行う乾燥工程を省略する
ことができることを見い出し本発明に到達した。As a result of intensive studies to solve these conventional drawbacks, the present inventors found that when nonwoven fabric is used as a backing material,
It is possible to inexpensively and easily strengthen the veneer and prevent it from warping or bending, and when adhering the veneer and nonwoven fabric, the water content of the veneer is adjusted and then thermocompression bonded via polyolefin. The inventors have discovered that this method not only has good workability, but also allows the drying step that is normally performed before proceeding to the next resin impregnation step to be omitted, and has thus arrived at the present invention.
（発明が解決しようとする問題点）
従って本発明の第１の目的は、製造工程中における単板
の反りや曲がりの影響を低減し、容易に強化木質化粧材
を得ることのできる強化化粧材の製造方法を提供するこ
とにある。(Problems to be Solved by the Invention) Therefore, the first object of the present invention is to reduce the effects of warpage and bending of the veneer during the manufacturing process, and to easily obtain a reinforced decorative wood material. The purpose of this invention is to provide a method for manufacturing the same.
本発明の第２の目的は、製造工程を簡略化して容易且つ
安価に、強化化粧材を製造することのできる方法を提供
することにある。A second object of the present invention is to provide a method for manufacturing a reinforced decorative material easily and inexpensively by simplifying the manufacturing process.
（問題を解決するための手段）
本発明の上記の諸口的は、少なくとも１種のポリオレフ
ィン樹脂を約５〜５０重量％含有する不織布を、含水率
を約４〜２０重量％に調整した単板の裏面に重ねて熱圧
着し、次いで合成樹脂液を注入した後接着剤を介して合
板へ貼着し、前記合成樹脂及び接着剤を熱圧硬化せしめ
ることを特徴とする強化木質化粧材の製造方法によって
達成された。(Means for Solving the Problem) The above aspects of the present invention are a veneer made of a nonwoven fabric containing about 5 to 50% by weight of at least one type of polyolefin resin and having a water content adjusted to about 4 to 20% by weight. production of a reinforced wood decorative material, characterized in that the material is layered on the back side of the material and bonded under heat and pressure, then a synthetic resin liquid is injected and then adhered to plywood via an adhesive, and the synthetic resin and adhesive are cured under heat and pressure. achieved by the method.
本発明で使用する不織布は公知のものの中から適宜選択
することができ、不織布の原料や、不織布の製造方法に
はよらない。本発明においては、これらの不織布をポリ
オレフィン樹脂を接着剤として単板に熱圧着する。この
場合の加熱は、通常ポリオレフィンが熔融する１００℃
〜１５０℃の範囲で行われる。温度を上げすぎると、単
板の性質が変化したり破損し易く好ましくない。The nonwoven fabric used in the present invention can be appropriately selected from known ones, and does not depend on the raw material of the nonwoven fabric or the method of manufacturing the nonwoven fabric. In the present invention, these nonwoven fabrics are thermocompression bonded to a veneer using a polyolefin resin as an adhesive. The heating in this case is usually 100°C, which is the temperature at which the polyolefin melts.
The temperature range is 150°C. If the temperature is raised too high, the properties of the veneer may change or be easily damaged, which is undesirable.
本発明で使用するポリオレフィンの代表的なものは、ポ
リエチレン及びポリプロピレンであり、これらは混合し
て使用することもできる。Typical polyolefins used in the present invention are polyethylene and polypropylene, and these can also be used as a mixture.
ポリオレフィンの使用量が少なすぎると単板と不織布の
接着が弱く、大すぎるとカールが発生するので好ましく
ない。ポリオレフィンの量は、使用する不織布の材質と
の関係で調節することができる０例えば、ポリプロピレ
ンの不織布を使用する場合には、加熱により不織布自身
が部分的に溶融して接着効果を発揮するので、不織布に
加えるポリオレフィンは５％程度で十分である。If the amount of polyolefin used is too small, the adhesion between the veneer and the nonwoven fabric will be weak, and if it is too large, curling will occur, which is not preferable. The amount of polyolefin can be adjusted depending on the material of the nonwoven fabric used. For example, when using a polypropylene nonwoven fabric, the nonwoven fabric itself partially melts when heated and exhibits an adhesive effect. About 5% of the polyolefin added to the nonwoven fabric is sufficient.
一般に、単板への合成樹脂の注入は単板の仮導管中に行
われるので、予め仮導管中を空にするために、単板を十
分に乾燥することが必要である。Generally, synthetic resin is injected into the veneer in the tracheids of the veneer, so it is necessary to dry the veneer sufficiently in order to empty the tracheids in advance.
しかしながら、前述の如く、不織布を単板に熱圧着する
前に該単板を乾燥した場合には反りや曲がりが発生して
好ましくないので、不織布を熱圧着する場合の単板には
、水分を含有させておくことが必要である。However, as mentioned above, if the veneer is dried before thermocompression bonding the nonwoven fabric to the veneer, warping and bending will occur, which is not desirable. It is necessary to contain it.
本発明においては、上記の水分を約３〜３０重量％、特
に約４〜２０重量％に調節しておくことが好ましい。こ
のような含水率の単板を使用した場合には、この単板に
前記不織布を熱圧着した場合の両者の接着性を極めて良
好なものとすることができるのみならず、同時に単板の
乾燥を実質的に行うことができるので、合成樹脂注入の
ための乾燥工程を省略することができる。In the present invention, the water content is preferably adjusted to about 3 to 30% by weight, particularly about 4 to 20% by weight. When a veneer with such a moisture content is used, not only can the adhesion between the nonwoven fabric and the nonwoven fabric be extremely good when the veneer is thermocompression bonded to the veneer, but also the drying of the veneer can be improved. Since this can be done substantially, the drying process for injecting the synthetic resin can be omitted.
上記の如く、不織布を熱圧着した単板は、反りや曲がり
が発生することもなく実質的に乾燥状態となるのみなら
ず、不織布によって強化されるので次工程の合成樹脂含
浸操作を、公知の方法によって容易に行うことができる
。As mentioned above, the veneer to which the nonwoven fabric is thermocompressed is not only essentially dry without warping or bending, but also strengthened by the nonwoven fabric, so that the next process of impregnating it with synthetic resin can be carried out using the known method. It can be easily done by this method.
合成樹脂を含浸させる好ましい方法としては、単板を減
圧下に晒して仮導管に樹脂が進入し易い状態とし、合成
樹脂を注入した後直ちに解圧し、数時間常圧で放置する
方法を挙げることができる。A preferred method for impregnating the veneer with synthetic resin is to expose the veneer under reduced pressure to make it easier for the resin to enter the tracheid, immediately release the pressure after injecting the synthetic resin, and leave it at normal pressure for several hours. Can be done.
単板に注入する合成樹脂は、当業界公知の合成樹脂の中
から任意に選択することができる。又、合成樹脂を注入
するに際しては、通常合成樹脂の良溶媒を添加してその
粘度を調整するが、特に、合成樹脂として熱硬化性樹脂
を使用する場合には、硬化前の）封脂は液状である上、
分子量の調節によって粘度を関節することが容易である
から有機熔媒を使用する必要がない、この場合には、単
板の材色が浸みでることがないので、本発明の好ましい
実施態様である。The synthetic resin injected into the veneer can be arbitrarily selected from synthetic resins known in the art. Also, when injecting synthetic resin, a good solvent for the synthetic resin is usually added to adjust its viscosity, but especially when thermosetting resin is used as the synthetic resin, the sealant (before curing) is In addition to being liquid,
Since it is easy to adjust the viscosity by adjusting the molecular weight, there is no need to use an organic solvent. be.
上記の如くして、合成樹脂を注入した後、該単板の裏面
（不織布側）を接着剤を介して合板へ貼着し加熱すると
同時に加圧し、前記、注入した合成樹脂及び接着剤を熱
圧硬化せしめる。この場合に使用する接着剤及び熱圧硬
化の条件については、既に良く知られている。After injecting the synthetic resin as described above, the back side (non-woven fabric side) of the veneer is attached to the plywood via adhesive, heated and pressurized at the same time, and the injected synthetic resin and adhesive are heated. Pressure harden. The adhesive used in this case and the conditions for heat-pressure curing are already well known.
（発明の効果）
本発明の方法によれば、乾爆前の単板に不織布を乾式で
短時間に張り合わせるので、単板の曲がりを発生させる
ことなく容易に乾燥させることができる。この効果は、
単板として板目単板を使用した場合に特に顕著である。(Effects of the Invention) According to the method of the present invention, since the nonwoven fabric is dry-laminated to the veneer before dry explosion in a short time, the veneer can be easily dried without causing any bending. This effect is
This is particularly noticeable when grained veneer is used as the veneer.
又、使用する不織布として厚手のものを使用した場合に
は、保温性及び防音性の良好な強化化粧材とすることが
できる。In addition, when a thick nonwoven fabric is used, a reinforced decorative material with good heat retention and soundproofing properties can be obtained.
（実施例）
以下本発明を実施例によって更に詳述するが、本発明は
これによって限定されるものではない。(Example) The present invention will be explained in more detail below with reference to Examples, but the present invention is not limited thereto.
実施例１゜
０．５ｍ／ｍ厚で１５０ｍ／ｍ巾Ｘ４０００ｍ／ｍ長さ
の米松板目単板（含水率１２％）１０枚を用い、各単板
に、ポリプロピレンを２０重量％含有する、嵩比重２０
ｇｌｒｄの不織布（金星製紙■製Ｂｏｎｒｉｃ ２０
２０ ＰＢ■）を、１３５℃、５ｋｇ／−で十分間熱圧
着して裏打ちした。このようにして得られた不織布で裏
打ちした単板を減圧、加圧釜に操入し、真空ポンプで１
０Ｔｏｒｒに減圧して２時間維持した後、三速化工■製
不飽和ポリエステル樹脂（商品番号５ｌ−２０８）に、
重合開始剤としてベンゾイルパーオキサイド１１重ｆｆ
１％を加えた溶液を注入し、コンプレッサーにて２５ｋ
ｇ／ａｆに加圧して１時間保持した。Example 1 10 Japanese pine grain veneers (water content 12%) with a thickness of 0.5 m/m, a width of 150 m/m and a length of 4000 m/m were used, and each veneer contained 20% by weight of polypropylene. Bulk specific gravity 20
glrd non-woven fabric (Bonric 20 made by Kinsei Paper Corporation)
20 PB■) was heat-pressed at 135° C. and 5 kg/− for ten minutes to form a lining. The veneer lined with the non-woven fabric obtained in this way was depressurized, put into a pressure cooker, and heated with a vacuum pump for 1 hour.
After reducing the pressure to 0 Torr and maintaining it for 2 hours, it was applied to an unsaturated polyester resin (product number 5L-208) manufactured by Sansoku Kako ■.
Benzoyl peroxide 11x ff as a polymerization initiator
Inject a solution with 1% added and use a compressor to make 25k.
The pressure was increased to g/af and held for 1 hour.
解圧後過剰の樹脂液を回収した後、ｆｆｉ坂を取り出し
、接着剤を塗布した１５ｍ／ｍ合板に載置し、１３５℃
、６ｋｇ／−の条件で十分量熱圧硬化させた。After decompressing and collecting the excess resin liquid, the ffi slope was taken out and placed on a 15 m/m plywood coated with adhesive, and heated at 135°C.
, 6 kg/- in a sufficient amount.
上記の工程中での単板の割れは全く発生せず、又操作性
の低下もなく順調に行うことができた。During the above process, no cracking of the veneer occurred at all, and the process was carried out smoothly without any deterioration in operability.
得られた強化化粧材についてＬｏｏｍ／ｍ巾×１５０ｍ
／ｍの試験片を作製し寒熱繰返しＢ試験を行った所、ク
ランク発生量は平均１２ｍ／ｍであった。Loom/m width x 150m for the obtained reinforced decorative material
/m test pieces were prepared and subjected to cold/hot cyclic B test, and the average amount of crank generation was 12 m/m.
比較例１゜
実施例１で使用した米松板目単板を１０５℃、６時間で
絶乾した後、減圧、加圧釜に操入した他は実施例１の場
合と全（同様にして強化化粧材を作製した。しかしなが
ら、この場合には乾燥後減圧加圧釜に繰入する時点で１
０枚中３枚に割れが生じた。又実施例１の場合と同様に
して、寒熱繰返しＢ試験を行った所、平均２７０ｍ／ｍ
のクラックが発生した。Comparative Example 1゜The same procedure was used as in Example 1, except that the Japanese pine grain veneer used in Example 1 was completely dried at 105°C for 6 hours, and then placed in a vacuum and pressure cooker. However, in this case, 1
Cracks occurred in 3 out of 0 sheets. In addition, in the same manner as in Example 1, a cold and hot cyclic B test was conducted, and the average speed was 270 m/m.
A crack occurred.
比較例２゜
ポリプロピレンの含有率を３％とした不織布を使用した
他は実施例１と全く同様にして強化化粧材を作製した所
、米松単板から不織布が剥れ易く実用に耐えられるもの
ではなかった。Comparative Example 2 A reinforced decorative material was prepared in exactly the same manner as in Example 1 except that a nonwoven fabric with a polypropylene content of 3% was used, but the nonwoven fabric easily peeled off from the Japanese pine veneer and was not suitable for practical use. There wasn't.
比較例３゜
ポリプロピレン含有率６０％の不織布を使用して実施例
１と全（同様にして不織布を米松単板に裏打ちした所、
熱圧着後に該単板が著しくカールしその後の工程を通す
ことが困難であった。Comparative Example 3 A nonwoven fabric with a polypropylene content of 60% was used to produce the same fabric as in Example 1.
After thermocompression bonding, the veneer curled significantly, making it difficult to pass through subsequent steps.
これらの結果は本願発明の有効性をみごとに実証するも
のである。These results clearly demonstrate the effectiveness of the present invention.
Claims (1)
重量％含有する不織布を、含水率を約４〜２０重量％に
調整した木質薄板の裏面に重ねて熱圧着し、次いで合成
樹脂液を注入した後接着剤を介して合板へ貼着し、前記
合成樹脂及び接着剤を熱圧硬化せしめることを特徴とす
る強化木質化粧材の製造方法。1) At least one polyolefin resin, about 5 to 50%
% by weight of the nonwoven fabric was layered on the back side of a thin wooden board whose moisture content was adjusted to about 4 to 20% by weight and bonded under heat. Then, after injecting a synthetic resin liquid, it was attached to plywood via an adhesive, and the above-mentioned A method for producing a reinforced wood decorative material, which comprises curing a synthetic resin and an adhesive under heat and pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21502586A JPS6371301A (en) | 1986-09-13 | 1986-09-13 | Manufacture of reinforced woody decorative material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21502586A JPS6371301A (en) | 1986-09-13 | 1986-09-13 | Manufacture of reinforced woody decorative material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6371301A true JPS6371301A (en) | 1988-03-31 |
Family
ID=16665492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21502586A Pending JPS6371301A (en) | 1986-09-13 | 1986-09-13 | Manufacture of reinforced woody decorative material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6371301A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008115608A (en) * | 2006-11-06 | 2008-05-22 | Sumitomo Forestry Co Ltd | Joint structure of beam |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54154504A (en) * | 1978-05-25 | 1979-12-05 | Nippon Musical Instruments Mfg | Production of decorative plywood |
-
1986
- 1986-09-13 JP JP21502586A patent/JPS6371301A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54154504A (en) * | 1978-05-25 | 1979-12-05 | Nippon Musical Instruments Mfg | Production of decorative plywood |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008115608A (en) * | 2006-11-06 | 2008-05-22 | Sumitomo Forestry Co Ltd | Joint structure of beam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5217665A (en) | Phenol formaldehyde steam pressing of waferboard | |
| US4557784A (en) | Continuous process for producing a metal clad laminate | |
| JPS6371301A (en) | Manufacture of reinforced woody decorative material | |
| US4360560A (en) | Base material for the production of printed circuits and process for the preparation of the base material | |
| US3074904A (en) | Laminate structures | |
| JPS6398440A (en) | Manufacture of reinforced woody decorative material | |
| US3900685A (en) | Cellulose-polymer composites | |
| JP3017598B2 (en) | Manufacturing method of decorative board | |
| JP2006263974A (en) | Reinforced woody fiberboard, its manufacturing method and floor base material | |
| JP3442212B2 (en) | Wood fiberboard manufacturing method | |
| JPH0347370A (en) | Concrete form board and manufacture thereof | |
| JPH05261864A (en) | Reinforced wooden decorative material | |
| JP3067867B2 (en) | Manufacturing method of decorative board | |
| US2086187A (en) | Surfacing lumber | |
| JPH06106502A (en) | Production of plywood | |
| JP3067868B2 (en) | Manufacturing method of decorative board | |
| JPS6052304A (en) | Method of improving woody veneer | |
| JPH0780810A (en) | Light-weight board and production thereof | |
| JPS63205201A (en) | Decorative flitch and manufacture thereof | |
| JPS6159882B2 (en) | ||
| JP3886330B2 (en) | Method for reinforcing surface of porous substrate | |
| JP3606958B2 (en) | Manufacturing method of decorative veneer for building | |
| JPH02179701A (en) | Plastic composite veneer and manufacture of decorative table board employing the same | |
| US3698981A (en) | Polyester laminate and method for manufacture | |
| JPS63130343A (en) | Manufacture of decorative panel having solid pattern |