JPS63290738A - Manufacture of ligneous composite - Google Patents
Manufacture of ligneous compositeInfo
- Publication number
- JPS63290738A JPS63290738A JP62127341A JP12734187A JPS63290738A JP S63290738 A JPS63290738 A JP S63290738A JP 62127341 A JP62127341 A JP 62127341A JP 12734187 A JP12734187 A JP 12734187A JP S63290738 A JPS63290738 A JP S63290738A
- Authority
- JP
- Japan
- Prior art keywords
- wood
- adhesive sheet
- wood fragments
- matter
- small
- 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
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000002023 wood Substances 0.000 claims abstract description 96
- 239000000853 adhesive Substances 0.000 claims abstract description 47
- 230000001070 adhesive effect Effects 0.000 claims abstract description 47
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 28
- 239000000945 filler Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 40
- 239000007788 liquid Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 abstract description 11
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 238000000227 grinding Methods 0.000 abstract description 5
- 238000003825 pressing Methods 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 239000012634 fragment Substances 0.000 abstract 11
- 238000011282 treatment Methods 0.000 description 9
- 239000003086 colorant Substances 0.000 description 6
- 238000004040 coloring Methods 0.000 description 5
- 230000006641 stabilisation Effects 0.000 description 5
- 238000011105 stabilization Methods 0.000 description 5
- 229920006337 unsaturated polyester resin Polymers 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- 241001070947 Fagus Species 0.000 description 3
- 235000010099 Fagus sylvatica Nutrition 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 241000208140 Acer Species 0.000 description 1
- 241000157282 Aesculus Species 0.000 description 1
- 241001337993 Agathis <wasp> Species 0.000 description 1
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- 241000218691 Cupressaceae Species 0.000 description 1
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- 241000565354 Fraxinus longicuspis Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 241000219492 Quercus Species 0.000 description 1
- 235000016976 Quercus macrolepis Nutrition 0.000 description 1
- 235000015392 Sesbania grandiflora Nutrition 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000021736 acetylation Effects 0.000 description 1
- 238000006640 acetylation reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 210000001217 buttock Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 235000010181 horse chestnut Nutrition 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000001052 yellow pigment Substances 0.000 description 1
Abstract
Description
〔産業上の利用分野〕
この発明は、テーブル、カウンター、家具、音響機器の
外装ケース類等の木製什器や床材、壁材等の木質建材、
車内装備品などの表面材として好適に用いられる木質系
複合材を製造する方法に関し、多数の木材小片を粘着シ
ートに配列、粘着させて木材小片粘着シート状物を作り
、これを硬化性樹脂液に充填剤を混合した混練物からな
る平板状混練物に重ね合せ、ついで粘着シートを剥離し
て木材小片を平板状混練物に移し、これを加熱加圧して
固化物としたのち、この固化物の表面を研削することに
より木材小片の分散を均一とし、かつ木材小片の分散状
態の再現性を高め、製造を容易とするようにしたもので
ある。[Industrial Field of Application] This invention is applicable to wooden fixtures such as tables, counters, furniture, and exterior cases for audio equipment; wooden building materials such as flooring and wall materials;
Regarding the method of manufacturing a wood-based composite material that is suitably used as a surface material for car interior fittings, etc., a large number of small wood pieces are arranged and adhered to an adhesive sheet to make an adhesive sheet of wood pieces, and this is coated with a curable resin liquid. Then, the adhesive sheet is peeled off and the small pieces of wood are transferred to the flat kneaded material, which is heated and pressurized to form a solidified product. By grinding the surface, the small pieces of wood are uniformly dispersed, and the reproducibility of the dispersed state of the small pieces of wood is improved, making manufacturing easier.
このような木質系複合材をＩＪ造する方法として、先に
本出願人が特願昭６１−１６１５６４号として提案した
ものがある。この方法は、未硬化樹脂液に木材小片を混
合し、この混合物を型枠等に流して平坦に均らし、加熱
加圧して固化させ、ついで固化物の表面を研削する方法
である。
〔発明が解決しようとする問題点〕
しかしながら、この製法では未硬化樹脂液に木材小片を
加えて撹拌混合しているため、樹脂液と木材小片との混
合が均一に行われず、木材小片を樹脂中に均一に分散さ
せることが困難である問題があった。これは、木材小片
の寸法が３〜５０履と粗大であること、樹脂液と木材小
片との比重差があることなどのためである。また、木材
小片の分散状態に再現性がなく、均一な製品を得ること
が困難である問題もあった。
（問題点を解決するための手段）
この発明では、多数の木材小片を粘着シートに配列、粘
着させて木材小片粘着シート状物を作り、これを硬化性
樹脂液に充填剤を混合した混練物からなる平板状混練物
に重ね合せ、ついで粘着シートを剥離して木材小片を平
板状混練物に移し、これを加熱加圧して固化物としたの
ち、この固化物の表面を研削することをその解決手段と
した。
以下、この発明の詳細な説明する。
この発明で使用される木材小片には、黒タン、ブナ、ナ
ラ、トチ、セン、タモ、カエデ、カバ、カシなどの広Ｍ
樹、スリ１ヒノキ、マツ、スブルース、アガチスなどの
針葉樹などの木材の小片であって、その形状は特に限定
されないが、板状、直方体状、立方体状、粒状などの切
削加工により形成された小片、またはこれらの小片を機
械的衝撃、ローラ加圧によって破砕した小片などの様々
の形状のものが用いられる。この小片２の大きさは、そ
の形状を直方体状とした場合、幅３〜７Ｍ、好ましくは
５〜６ＩＩａ１長さ３〜３０Ｍ１好ましくは１２〜２０
Ｉｌ１１１厚さ０．２〜３履、好ましくは０．２〜１１
Ｍ１から幅２０〜２５鑓、長さ２０〜１００膳、好まし
くは３０〜６０履、厚さ０．２〜３履、好ましくは０．
２〜１ａｍまでの偏平なものが好ましく、円柱状であれ
ば径５〜１００ａｓ＋、厚さ０．２〜５履程度とされ、
破砕片であれば幅１〜４履、長さ３〜３０ａＩ１１好ま
しくは５〜２０履、厚さ０．２〜３ ｒｘａ ｓ好まし
くは０．２〜１履程度が望ましい。また、この木材小片
は、樹種の異なるもの、色調の異なるものなどが混入し
ていてもよい。また、木材小片には必要に応じて寸法安
定化処理を施したものを用いることもできる。寸法安定
化処理は、木材小片を無水酢酸で処理するアセチル化処
理、ポリエチレングリコール、ポリプロピレングリコー
ルを含浸する方法、液状のフェノール樹脂、不飽和ポリ
エステル樹脂、エポキシ樹脂、シリコーン樹脂、ウレタ
ン樹脂、アクリル樹脂などの袋化性樹脂液を含浸、固化
させる方法などがある。また、ポリエチレングリコール
や液状樹脂中に有機ハロゲン系防腐剤を混入しておき、
寸法安定化処理と防腐処理とを同時に行うこともできる
。
また、木材小片には、その一部または全部を１種または
２種以上の色調に着色処理を施したものを用いることが
できるが、黒ダンなどの黒色、レンガス、バトックなど
の黄色、ナラ、ブナなどの白色等木材の自然色を生かす
こともまた好ましい。
着色処理は、染料、顔料などの色剤を水、有機溶剤など
の溶剤に溶解した色剤濃度０．１〜１０重量％程度の着
色液に多数の木材小片を浸漬する方法などが用いられる
。着色液を加温して着色液の浸透を促し、濃色に着色す
ることもできる。また、寸法安定化処理の際に、種々の
液状樹脂中に色剤を溶解しておき、寸法安定化処理と同
時に着色処理を行うこともできる。
次に、第１図に示すようにこのような木材小片１・・・
を粘着シート２の粘着面３上に配列し、木材小片１・・
・を粘着シート２上に粘着する。ここで使われる粘着シ
ート２としては、基布の表面に粘着剤を塗布した通常の
ものが用いられる。木材小片１・・・の配列は、目の粗
い篩などを用いで散布する方法や直接手で粘着シート２
上に置いてゆく方法などによって、適宜行われる。木材
小片１・・・の配列量は粘着シート２の粘着面３の約１
０〜９０％、好ましくは７０〜９０％が覆い隠される程
度とされる。
また、第２図に示すように、木材小片１・・・の位置決
めが行えるように小突条を設けた型４上に木材小片１・
・・を配列し、これの上から粘着シート２で押えて、粘
着シート２の粘着面３に木材小片１・・・を付着させる
方法も採用できる。この方法では、型４にこのような位
置決めのための模様型を用いれば木材小片１・・・の配
列が一定化し、均一・な表面模様を有する複合材が得ら
れる。
これにより、多数の木材小片１・・・が粘着シート２に
配列、粘着した木材小片粘着シート状物５が得られる。
一方、これとは別に硬化性樹脂液に充填剤を混合した混
練物を平板状とした平板状混練物を用意する。ここで使
用される硬化性樹脂液としては、不飽和ポリエステル樹
脂、ポリウレタン樹脂、ジアリルフタレート樹脂、エポ
キシ樹脂、シリコーン樹脂、フェノール樹脂、アクリル
樹脂等の硬化前の状態が液状の熱硬化性樹脂の未硬化状
態の樹脂液が適している。
この樹脂液に配合される充填剤としては、炭酸カルシウ
ム、タルク、酸化チタン、シリカ、ガラス粉末などが使
用される。充填剤の配合量は、樹脂液１００重量部に対
して１００〜４００重量部程度とされる。この樹脂液と
充填剤とからなる混練物は、したがって高粘度となり、
大略ペースト状を呈する。この混練物には、樹脂の硬化
剤が添加され、必要に応じて着色剤、安定剤等の添加剤
を加えることができる。
ついで、第３図に示すように、この混練物を浅底の型６
内に流し込み、シリコーンローラやコブなどを用いて平
らに均し、平板状混練物２とする。
勿論、型６を用いずに平板状としてもよい。この平板状
物の厚さは、約１〜２ｊ＊、好ましくは１〜１．５ａｍ
＋程度とされる
ついで、この平板状混練物７が未硬化状態にあるうちに
、第４図に示ずように平板状混練物７上に木材小片粘着
シート状物５をその木材小片１・・・が平板状混練物７
に接するように重ね合せ、軽く押圧し、両者を接合する
。ついで、接着シート２のみを剥離すれば、木材小片１
・・・が平板状混練物７表面に残り、木材小片１・・・
が平板状混練物７に移転する。この際、木材小片粘着シ
ート状物５と平板状混練物７との重ね合せ後、数時間放
置し樹脂液の硬化が進行し混練物７の粘度が上がり、木
材小片１・・・の動きがある程度拘束された状態となつ
た侵に、粘着シート２を剥離することが好ましい。これ
により、木材小片１・・・の動きがなくなり、取扱いが
容易となる。
ついで、このものを加熱加圧して樹脂を固化させる。加
熱加圧は、周知のホットプレスなどの加熱加圧手段を用
いて行われ、平板状況練物７上の木材小片１・・・上に
離型フィルム、当板を置き、圧力０．５〜１．５ＨＰａ
、 ｍ度１００〜１３０℃、時間２〜５分程度の条件
で行われる。この加熱加圧により、平板状混練物７上に
置かれた木材小片１・・・がこの混練物７に圧入すると
ともに混練物６が硬化し、各々の木材小片１・・・の大
部分が混練物７中に埋没した状態の固化物が得られる。
ついで、この固化物の表面を種″々の研削手段により研
削して樹脂固化物と埋設木材小片との表面を面一とし、
木材小片を表面に露出させれば、第５図におよび第６図
に示すような目的とする好適には簿扱状の木質系複合材
８が得られる。
なお、この木質系複合材の形状は平板状が代表的に使用
されるが、この発明は必ずしも平板状に限られずに、加
熱加圧時の型面の形状を変更することにより、円周面の
ような２次元状あるいは球面のような３次元状の曲面ま
たはそれらを複数種類組み合せたような複雑な曲面を有
する形状の複合材を形成することも可能である
このようにして得られた木質系複合＠８は、好ましくは
合板、パーチクルボート等の木質系基板または繊維強化
合成樹脂等の樹脂系基板と接着積層して各種の製品に使
用される。また、この木質系複合材８は研削処理により
木材小片１・・・の一部または大部分が露出しているの
で、これの表面にポリエステル樹脂、ポリウレタン樹脂
等の塗料による無色透明もしくは着色透明の塗装を施し
て塗膜を形成しておくことが特に望ましい。
このような木質系複合材の製法によれば、木材小片１・
・・を粘着シート２に粘着したうえで平板状況練物７上
に重ね、木材小片１・・・を混練物７に移転するもので
、木材小片１・・・の配列状態が崩れることなく、平板
状混練物７に移すことが可能となり、作業が安定かつ容
易に行うことができるとともに目視によって木材小片１
・・・の配置具合を調節できるため、木材小片１・・・
の均一分散も可能となる。また、木材小片１・・・が平
板状混練物７の中に深く沈むことがな（、その表面に集
中して小片１・・・を配することができ、木材小片１・
・・の量を少なくしても、表面の美しい木質系複合材８
を得ることができる。
（実施例〕
不飽和ポリエステル樹脂未硬化液１００！ｆｉｆｆｉ部
に炭酸カルシウム３００重石部と黄色顔料１重量部を配
合し、混練して型６に流し込み、ローラで均して厚さ１
．５ａｗｔの平板状況ＩＩＩ′＃Ｊ７とした。
一方、ブナ、ナラなどを幅１０〜２０麿、長さ１０〜２
０１ｍ１厚さ１〜１．５ｊＩＩ＋の大きさの小片に切断
し、これを乾燥したのち不飽和ポリエステル樹脂未硬化
液中に浸漬し、樹脂液を含浸し、常温で放欝して半硬化
状態とした木材小片１・・・を粘着シート２上に手で散
布して配列した。散布量は粘着シート２の全表面の８５
〜９０％が隠れるように均一に配置した。これを先の平
板状混練物７上に重ね合せ、ローラで軽く押圧し常温で
３時開静置したのち、粘着シート２を剥離した。ついで
、このものをホットプレスにて圧力Ｉ ＨＰａ 、 ｍ
度１００℃、時Ｉｆ！１５分間加熱加圧して固化物とし
たのち、木材小片１・・・のある表面をサンダー掛けし
て研削し、不飽和ポリエステル樹脂系透明塗料を塗布し
、厚さ約１．５鵬の美麗な木質系複合材を得た。
〔発明の効果〕
以上説明したように、この発明の木質複合材の製法は、
多数の木材小片を粘着シートに配列、粘着させて木材小
片粘着シート状物を作り、これを硬化性樹脂液に充填剤
を混合した混練物からなる平板状混練物に重ね合せ、つ
いで粘着シートを剥離して木材小片を平板状混練物に移
し、これを加熱加圧して固化物としたのち、この固化物
の表面を研削するものであるので、木材小片の分散の均
一化を容易に計ることができ、かつ木材小片の分散状態
を一定に保つことが可能で表面模様の再現性の良い木質
系複合材が得られる。また、木材小片のＩＩＩＩ物への
沈み込みが少なく、表面に集中させることができ、木材
小片の使用量を削減できるなどの効果を得ることができ
る。As a method for IJ construction of such wood-based composite materials, there is a method previously proposed by the present applicant in Japanese Patent Application No. 161564/1981. This method involves mixing small pieces of wood with an uncured resin liquid, pouring this mixture into a mold or the like, leveling it out, heating and pressurizing it to solidify it, and then grinding the surface of the solidified product. [Problems to be solved by the invention] However, in this manufacturing method, small pieces of wood are added to the uncured resin liquid and mixed by stirring, so the resin liquid and the small pieces of wood are not mixed uniformly, and the small pieces of wood are mixed with the resin. There was a problem in that it was difficult to uniformly disperse the powder. This is due to the fact that the size of the wood pieces is large, ranging from 3 to 50 mm, and that there is a difference in specific gravity between the resin liquid and the wood pieces. Furthermore, there was also the problem that the dispersion state of the wood chips was not reproducible, making it difficult to obtain a uniform product. (Means for Solving the Problems) In this invention, a large number of small wood pieces are arranged and adhered to an adhesive sheet to make a small wood piece adhesive sheet, and this is kneaded with a curable resin liquid mixed with a filler. Then, the adhesive sheet is peeled off and the small pieces of wood are transferred to the flat kneaded material, which is heated and pressed to solidify it, and the surface of this solidified material is ground. It was used as a solution. The present invention will be explained in detail below. The wood pieces used in this invention include wide-molecular wood such as black tongue, beech, oak, horse chestnut, Japanese ash, ash, maple, birch, and oak.
A small piece of wood such as a coniferous tree such as a tree, a cypress, a pine, a subruce, or agathis, and its shape is not particularly limited, but it is formed by cutting into a plate, rectangular parallelepiped, cube, granule, etc. Various shapes are used, such as small pieces or small pieces obtained by crushing these small pieces by mechanical impact or roller pressure. The size of this small piece 2 is, when its shape is a rectangular parallelepiped, width 3 to 7M, preferably 5 to 6 IIa, length 3 to 30M, preferably 12 to 20
Il111 thickness 0.2-3 shoes, preferably 0.2-11
From M1, the width is 20-25 mm, the length is 20-100 mm, preferably 30-60 mm, and the thickness is 0.2-3 mm, preferably 0.
A flat one with a diameter of 2 to 1 am is preferable, and if it is cylindrical, the diameter is 5 to 100 as+ and the thickness is about 0.2 to 5 mm.
If it is a crushed piece, it is desirable to have a width of 1 to 4 shoes, a length of 3 to 30 inches, preferably 5 to 20 shoes, and a thickness of 0.2 to 3 rxas, preferably about 0.2 to 1 shoe. Further, the wood pieces may contain pieces of different wood species, wood pieces of different colors, etc. Further, the small pieces of wood may be subjected to a dimensional stabilization treatment if necessary. Dimensional stabilization treatments include acetylation treatment in which small pieces of wood are treated with acetic anhydride, impregnation with polyethylene glycol or polypropylene glycol, liquid phenolic resin, unsaturated polyester resin, epoxy resin, silicone resin, urethane resin, acrylic resin, etc. There is a method of impregnating and solidifying a bag-forming resin liquid. In addition, organic halogen preservatives are mixed into polyethylene glycol or liquid resin,
Dimensional stabilization treatment and antiseptic treatment can also be performed simultaneously. In addition, wood pieces that have been partially or completely colored in one or more colors can be used, including black such as black dun, yellow such as brick and buttock, oak, etc. It is also preferable to make use of the natural color of the wood, such as the white color of beech. For the coloring treatment, a method is used in which a large number of wood pieces are immersed in a coloring solution in which a coloring agent such as a dye or a pigment is dissolved in a solvent such as water or an organic solvent, and the concentration of the coloring agent is approximately 0.1 to 10% by weight. It is also possible to heat the coloring liquid to promote penetration of the coloring liquid, thereby producing a deep color. Further, during the dimensional stabilization treatment, a coloring agent can be dissolved in various liquid resins, and the coloring treatment can be performed simultaneously with the dimensional stabilization treatment. Next, as shown in Fig. 1, such a small piece of wood 1...
are arranged on the adhesive surface 3 of the adhesive sheet 2, and the small pieces of wood 1...
・Adhere on adhesive sheet 2. The adhesive sheet 2 used here is a normal one with a base fabric coated with an adhesive on the surface. The arrangement of the small pieces of wood 1 can be done by scattering them using a coarse sieve, or directly by hand on the adhesive sheet 2.
This is done as appropriate depending on the method of placing it on top. The amount of arrangement of the small pieces of wood 1 is approximately 1 of the adhesive surface 3 of the adhesive sheet 2.
0 to 90%, preferably 70 to 90% is covered. Further, as shown in Fig. 2, the small pieces of wood 1 are placed on a mold 4 provided with small protrusions so that the small pieces of wood 1 can be positioned.
It is also possible to adopt a method of arranging the pieces of wood 1, pressing them with the adhesive sheet 2 from above, and adhering the small pieces of wood 1 to the adhesive surface 3 of the adhesive sheet 2. In this method, if such a pattern for positioning is used as the mold 4, the arrangement of the small pieces of wood 1 becomes constant, and a composite material having a uniform surface pattern can be obtained. As a result, a small wood piece adhesive sheet material 5 in which a large number of small wood pieces 1 are arranged and adhered to the adhesive sheet 2 is obtained. On the other hand, separately from this, a flat plate-shaped kneaded product is prepared in which a kneaded product of a curable resin liquid and a filler is mixed into a flat plate. The curable resin liquid used here includes unsaturated polyester resin, polyurethane resin, diallyl phthalate resin, epoxy resin, silicone resin, phenol resin, acrylic resin, etc. The state before curing is a liquid thermosetting resin. Cured resin liquid is suitable. Calcium carbonate, talc, titanium oxide, silica, glass powder, and the like are used as fillers to be added to this resin liquid. The blending amount of the filler is approximately 100 to 400 parts by weight per 100 parts by weight of the resin liquid. The kneaded material consisting of this resin liquid and filler therefore has a high viscosity,
Appears roughly paste-like. A curing agent for the resin is added to this kneaded material, and additives such as a coloring agent and a stabilizer can be added as necessary. Next, as shown in Fig. 3, this kneaded material is placed in a shallow mold 6
The mixed material is poured into a container and smoothed using a silicone roller or a bump to form a flat kneaded material 2. Of course, it is also possible to form a flat plate without using the mold 6. The thickness of this plate is approximately 1-2j*, preferably 1-1.5 am
While the flat kneaded material 7 is in an uncured state, a small wood piece adhesive sheet 5 is placed on the flat kneaded material 7 as shown in FIG. ... is a flat plate-shaped kneaded material 7
Lay them together so that they are in contact with each other, and press lightly to join them together. Then, by peeling off only the adhesive sheet 2, the small piece of wood 1
... remains on the surface of the flat kneaded material 7, and the small pieces of wood 1...
is transferred to the flat kneaded material 7. At this time, after the small wood piece adhesive sheet 5 and the flat kneaded material 7 are superimposed, the resin liquid is allowed to harden for several hours, the viscosity of the kneaded material 7 increases, and the movement of the small wood pieces 1 is reduced. It is preferable to peel off the adhesive sheet 2 when the adhesive sheet 2 is in a somewhat restrained state. As a result, the small pieces of wood 1 do not move, making handling easier. Next, this material is heated and pressurized to solidify the resin. The heating and pressing is performed using a heating and pressing means such as a well-known hot press. .5HPa
The temperature is 100 to 130 degrees Celsius and the time is about 2 to 5 minutes. Due to this heating and pressurization, the small pieces of wood 1... placed on the flat plate-shaped kneaded material 7 are press-fitted into this kneaded material 7, and the kneaded material 6 is hardened, so that most of the small pieces of wood 1... are A solidified material buried in the kneaded material 7 is obtained. Next, the surface of this solidified material is ground by various grinding means so that the surfaces of the solidified resin material and the buried wood pieces are flush with each other,
By exposing the wood chips to the surface, a desired, preferably book-like, wood-based composite material 8 is obtained as shown in FIGS. 5 and 6. Although the shape of this wood-based composite material is typically a flat plate, this invention is not necessarily limited to the flat plate shape, and by changing the shape of the mold surface during heating and pressing, the shape of the circumferential surface can be changed. It is also possible to form a composite material with a two-dimensional curved surface such as a spherical surface, a three-dimensional curved surface such as a spherical surface, or a complex curved surface such as a combination of multiple types of these. The composite @8 is preferably used in various products by being adhesively laminated with a wood substrate such as plywood or particle boat, or a resin substrate such as fiber-reinforced synthetic resin. In addition, since a part or most of the small pieces of wood 1... of this wood-based composite material 8 are exposed by the grinding process, the surface of this material is coated with colorless transparent or colored transparent paint such as polyester resin or polyurethane resin. It is particularly desirable to apply a coating to form a coating film. According to this method of manufacturing wood-based composite materials, small pieces of wood 1.
... is adhered to the adhesive sheet 2 and then stacked on the flat plate kneading material 7, and the small wood pieces 1... are transferred to the kneading material 7, without disrupting the arrangement of the small wood pieces 1... This allows the work to be carried out stably and easily, as well as visually inspecting the small pieces of wood 1.
Because you can adjust the placement of..., small piece of wood 1...
Uniform dispersion of the particles is also possible. In addition, the small pieces of wood 1 do not sink deeply into the flat kneaded material 7 (the small pieces of wood 1 can be concentrated on the surface thereof, and the small pieces of wood 1...
A wood-based composite material with a beautiful surface even with a small amount of...8
can be obtained. (Example) 100 parts of uncured unsaturated polyester resin liquid, 300 parts of calcium carbonate, and 1 part of yellow pigment were blended, kneaded, poured into a mold 6, and smoothed with a roller to a thickness of 1 part.
．． A 5 awt flat plate condition III'#J7 was used. On the other hand, beech, oak, etc. have a width of 10 to 20 mm and a length of 10 to 2 mm.
Cut into small pieces with a size of 01m1 and a thickness of 1 to 1.5jII+, and after drying this, immerse it in an uncured unsaturated polyester resin solution, impregnate it with the resin solution, and leave it at room temperature to a semi-cured state. The wood pieces 1... were manually scattered and arranged on the adhesive sheet 2. The amount of spraying is 85% on the entire surface of adhesive sheet 2.
They were arranged uniformly so that ~90% of the area was hidden. This was superimposed on the flat plate-shaped kneaded material 7, lightly pressed with a roller and left open at room temperature for 3 o'clock, and then the adhesive sheet 2 was peeled off. Next, this material was heated to a pressure of I HPa, m using a hot press.
Degree 100℃, time If! After heating and pressurizing for 15 minutes to solidify, the surface of the small piece of wood 1 was ground with a sander, and an unsaturated polyester resin transparent paint was applied to create a beautiful piece with a thickness of about 1.5 mm. A wood-based composite material was obtained. [Effects of the Invention] As explained above, the method for manufacturing a wood composite material of the present invention is as follows:
A large number of small wood pieces are arranged on an adhesive sheet and adhered to make an adhesive sheet of small wood pieces, which is then superimposed on a flat kneaded material made of a kneaded mixture of a curable resin liquid and a filler, and then the adhesive sheet is attached. The peeled wood pieces are transferred to a flat kneaded material, which is heated and pressurized to solidify it, and then the surface of this solidified product is ground, making it easy to ensure uniform dispersion of the wood chips. It is possible to maintain a constant state of dispersion of small pieces of wood, and to obtain a wood-based composite material with good surface pattern reproducibility. In addition, the sinking of small pieces of wood into the III material is small and they can be concentrated on the surface, resulting in the effect that the amount of use of small pieces of wood can be reduced.
第１図ないし第５図は、この発明の製法の一例を工程順
に示した概略断面図、
第６図はこの発明の製法によって得られた木質系複合材
を示す平面図である。
１・・・・・・木材小片、
２・・・・・・粘着シート、
５・・・・・・木材小片粘着シート状物、７・・・・・
・平板状混練物、
８・・・・・・木質系複合材。
出願人 日本楽器製造株式会社
第４図1 to 5 are schematic sectional views showing an example of the manufacturing method of the present invention in the order of steps, and FIG. 6 is a plan view showing a wood-based composite material obtained by the manufacturing method of the present invention. 1... Small piece of wood, 2... Adhesive sheet, 5... Small piece of wood adhesive sheet, 7...
- Flat plate-shaped kneaded material, 8... Wood-based composite material. Applicant: Nippon Musical Instruments Manufacturing Co., Ltd. Figure 4
Claims (2)
状態の木材小片粘着シート状物を作り、これを硬化性樹
脂液に充填剤を混合した混練物からなる平板状混練物と
重ね合せ、 ついで粘着シートを剥離して木材小片を平板状混練物に
移し、これを加熱加圧して固化物としたのち、 この固化物の表面を研削することを特徴とする木質系複
合材の製法。(1) A large number of small wood pieces are arranged and adhered to an adhesive sheet to make a small wood piece adhesive sheet, and this is superimposed on a flat kneaded material made of a kneaded product of a curable resin liquid mixed with a filler. , Then, the adhesive sheet is peeled off, the small pieces of wood are transferred to a flat kneaded material, this is heated and pressurized to form a solidified material, and the surface of this solidified material is ground.
で押えることを特徴とする特許請求の範囲第１項記載の
木質系複合材の製法。(2) The method for producing a wood-based composite material according to claim 1, characterized in that small pieces of wood are arranged on a mold and pressed from above with an adhesive sheet.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62127341A JPS63290738A (en) | 1987-05-25 | 1987-05-25 | Manufacture of ligneous composite |
| DE19873750087 DE3750087T2 (en) | 1986-07-09 | 1987-07-09 | DECORATIVE SHEET AND METHOD FOR PRODUCING THE SAME. |
| PCT/JP1987/000487 WO1988000134A1 (en) | 1986-07-09 | 1987-07-09 | Decorative sheet and method of manufacturing the same |
| EP19870904555 EP0277238B1 (en) | 1986-07-09 | 1987-07-09 | Decorative sheet and method of manufacturing the same |
| US07/184,449 US4911969A (en) | 1986-07-09 | 1987-07-09 | Decorative sheet and method of manufacturing the same |
| KR1019880700255A KR910008764B1 (en) | 1986-07-09 | 1987-07-09 | Decorative sheet and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62127341A JPS63290738A (en) | 1987-05-25 | 1987-05-25 | Manufacture of ligneous composite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63290738A true JPS63290738A (en) | 1988-11-28 |
Family
ID=14957525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62127341A Pending JPS63290738A (en) | 1986-07-09 | 1987-05-25 | Manufacture of ligneous composite |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63290738A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110154171A (en) * | 2019-05-29 | 2019-08-23 | 安徽池州丰林木业有限公司 | A kind of wood-based plate pressing device |
-
1987
- 1987-05-25 JP JP62127341A patent/JPS63290738A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110154171A (en) * | 2019-05-29 | 2019-08-23 | 安徽池州丰林木业有限公司 | A kind of wood-based plate pressing device |
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