JPH0350684B2 - - Google Patents
Info
- Publication number
- JPH0350684B2 JPH0350684B2 JP58137183A JP13718383A JPH0350684B2 JP H0350684 B2 JPH0350684 B2 JP H0350684B2 JP 58137183 A JP58137183 A JP 58137183A JP 13718383 A JP13718383 A JP 13718383A JP H0350684 B2 JPH0350684 B2 JP H0350684B2
- Authority
- JP
- Japan
- Prior art keywords
- veneer
- solution
- bleaching
- hydrogen peroxide
- veneers
- 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 - Lifetime
Links
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 26
- 238000004061 bleaching Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 12
- 229920003002 synthetic resin Polymers 0.000 claims description 6
- 239000000057 synthetic resin Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims 1
- 239000000243 solution Substances 0.000 description 20
- 239000007864 aqueous solution Substances 0.000 description 11
- 239000002023 wood Substances 0.000 description 9
- 239000007844 bleaching agent Substances 0.000 description 7
- 238000000354 decomposition reaction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- -1 polyoxyethylene Polymers 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000012670 alkaline solution Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229920013716 polyethylene resin Polymers 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、単板表面の部分的な汚れや着色を取
り除き、均一色にする木材単板の漂白方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method for bleaching a wood veneer to remove local stains and coloring from the surface of the veneer and give it a uniform color.
従来、木材単板の漂白方法としては、漂白液を
木材表面に塗布したり、漂白液に浸漬したり、さ
らには漂白液を単板内部に含浸するなどの方法が
行われてきた。
Conventionally, methods for bleaching wood veneers include applying a bleaching solution to the surface of the wood, immersing the wood in a bleaching solution, and further impregnating the inside of the veneer with a bleaching solution.
しかし、漂白液を単板表面に塗布する方法で
は、木材の部分的な組織の粗密や木材の含有する
樹脂分等により、漂白液の吸い込み差や塗布ムラ
が生じ、その結果、漂白にムラが出来たり単板表
面のわずかな部分のみが漂白され、内部は漂白さ
れないままであつたりして、後の工程で単板表面
をわずかに研磨仕上げしても、内部の未漂白部分
が現れるという欠点がある。 However, with the method of applying bleaching solution to the surface of the veneer, differences in the suction of the bleaching solution and uneven application occur due to the local structure of the wood and the resin content of the wood, resulting in uneven bleaching. The drawback is that only a small part of the surface of the veneer is bleached, and the inside remains unbleached, and even if the surface of the veneer is slightly polished in a later process, the unbleached parts inside will still appear. There is.
一方、単板を漂白液に浸漬する方法では、漂白
液中で単板表面が互いに密着しやすく、密着部分
は漂白液の拡散が悪くなつて漂白されにくく、ま
た、漂白液は静止しているため、単板と接してる
部分の液のみが漂白作用を行なうことになり、漂
白効率が悪く、漂白液全てを有効に使用すること
が出来ない。 On the other hand, with the method of soaking the veneer in a bleach solution, the surfaces of the veneers tend to stick to each other in the bleach solution, and the areas that are in close contact with each other have poor diffusion of the bleach solution and are difficult to bleach. Therefore, only the solution in contact with the veneer performs the bleaching action, resulting in poor bleaching efficiency and not being able to use all of the bleaching solution effectively.
さらに、単板を過酸化水素などの漂白液を用い
て含浸漂白する場合は、単板量に対する漂白液の
液比を小さくすると過酸化水素の分解が激しくな
り、発熱して危険性もある上に、残液中の過酸化
水素の低下も大きく、再使用出来ないので不経済
である。 Furthermore, when impregnating and bleaching veneers using a bleaching solution such as hydrogen peroxide, if the ratio of bleaching solution to the amount of veneer is reduced, hydrogen peroxide will decompose more rapidly, generating heat and becoming dangerous. Furthermore, the amount of hydrogen peroxide in the residual liquid is greatly reduced, making it uneconomical as it cannot be reused.
また、単板量に対する漂白液の液比を大きくす
ると、過酸化水素の急激な分解は少ないが単板一
枚当たりにかかる漂白液のコストが上がり、かつ
残液が多くなるので廃液の処理に多額の費用を要
するなど、これまた経済的でないなどの問題点が
あつた。 In addition, if the ratio of bleaching solution to the amount of veneer is increased, the rapid decomposition of hydrogen peroxide will be reduced, but the cost of bleaching solution per veneer will increase, and the amount of residual solution will increase, making it difficult to dispose of waste solution. There were also problems such as the large amount of cost required and the fact that it was not economical.
本発明の目的は、上記従来技術の問題点を解決
することにあり、必要最少量の過酸化水素水を用
いて単板の内部まで均一に、かつ簡単な作業で安
全に漂白する方法を提供することにある。
The purpose of the present invention is to solve the above-mentioned problems of the prior art, and to provide a method for safely bleaching the interior of a veneer uniformly and easily using the minimum necessary amount of hydrogen peroxide. It's about doing.
上記の目的を達成するため、本発明では、過酸
化水素水溶液を含浸した単板とアルカリ水溶液を
含浸した単板を一枚毎に重ね合わせた後、該重ね
合わせた単板全体を耐薬品性能に優れた合成樹脂
フイルムでみ密封し、ついでそのまま加温養生す
る。
In order to achieve the above object, in the present invention, after stacking a veneer impregnated with an aqueous hydrogen peroxide solution and a veneer impregnated with an aqueous alkaline solution one by one, the entire stacked veneer has chemical resistance properties. It is sealed with a synthetic resin film that has excellent properties, and then left to heat and cure.
本発明において、漂白剤である過酸化水素水溶
液と触媒であるアルカリ水溶液を別個の単板に含
浸するのは、単板を重ね合わせることによつて、
その界面から過酸化水素を分解させ単板の内部か
ら漂白するとともに、漂白液の無駄な分解を出来
るだけ防止して、液の再使用を可能にするためで
ある。 In the present invention, separate veneers are impregnated with an aqueous hydrogen peroxide solution as a bleaching agent and an aqueous alkaline solution as a catalyst by overlapping the veneers.
This is to decompose hydrogen peroxide from the interface and bleach the veneer from the inside, and to prevent wasteful decomposition of the bleaching solution as much as possible, making it possible to reuse the solution.
本発明に使用出来る単板としては、厚さが0.2
mmから２mm程度の範囲にある通常の木材単板で、
乾燥してあつても未乾燥であつても良い。 The thickness of the veneer that can be used in the present invention is 0.2
With normal wood veneer in the range of mm to 2 mm,
It may be dried or undried.
単板に含浸される過酸化水素水としては市販の
35％濃度品を使用すると良い。なお過酸化水素水
溶液には単板への浸透を助けるための浸透剤や消
泡剤を少量添加しておくことが好ましい。 Commercially available hydrogen peroxide solution is used to impregnate the veneer.
It is best to use a 35% concentration product. Note that it is preferable to add a small amount of a penetrant or antifoaming agent to the aqueous hydrogen peroxide solution to help it permeate into the veneer.
浸透剤としてはポリオキシエチレンアルキルエ
ーテル、ポリオキシアルキレンアルキルフエノー
ルの硫酸エステル塩、高級脂肪酸アミドのアルキ
ルスルホン酸塩、アルキルベンゼンスルホン酸な
どの一種または数種を混合したものを挙げること
ができる。 Examples of penetrants include polyoxyethylene alkyl ethers, polyoxyalkylene alkyl phenol sulfate ester salts, higher fatty acid amide alkyl sulfonates, alkylbenzene sulfonic acids, and the like or mixtures of several of them.
アルカリ水溶液としてはアンモニア水（25％濃
度）、カセイソーダ、トリポリリン酸ソーダなど
の水溶液で、分解調整剤としてのケイ酸ソーダや
前記の浸透剤などを少量添加して用いる。 The alkaline aqueous solution is an aqueous solution of ammonia water (25% concentration), caustic soda, sodium tripolyphosphate, etc., and a small amount of sodium silicate as a decomposition regulator or the above-mentioned penetrating agent is added.
上記の過酸化水素水溶液やアルカリ水溶液を単
板に含浸する方法としては、単板をそれぞれの水
溶液中に浸漬する方法も可能であるが、含浸処理
時間が、数時間から一夜程度と長くかかり作業性
も悪いため、単板を減圧、加圧し得る容器内に封
入し、それぞれの水溶液を単板内に加圧含浸する
方法が好ましい。 As a method of impregnating the veneer with the hydrogen peroxide aqueous solution or alkaline aqueous solution mentioned above, it is possible to immerse the veneer in each aqueous solution, but the impregnation process takes a long time, ranging from several hours to overnight. Since the veneer has poor properties, it is preferable to enclose the veneer in a container that can be depressurized or pressurized, and impregnate the veneer with each aqueous solution under pressure.
加圧含浸法では10〜30Kg／cm2の圧力で30分間か
ら60分程度処理すれば単板内にそれぞれの水溶液
を充分含浸させることが出来る。 In the pressure impregnation method, each aqueous solution can be sufficiently impregnated into the veneer by processing at a pressure of 10 to 30 kg/cm 2 for about 30 to 60 minutes.
なお、単板に対するそれぞれの水溶液の標準的
な含浸量としては、乾燥単板重量の70％から150
％程度の重量を含浸させることが好ましい。 The standard amount of each aqueous solution impregnated into the veneer is from 70% to 150% of the weight of the dry veneer.
% by weight is preferred.
ついで、上記の重ね合わされた単板全体を耐薬
品性能に優れた合成樹脂フイルムで密封し、重ね
られた単板間に発生する酸素を逃さないようにす
る。なお耐薬品性能に優れた合成樹脂フイルムと
しては厚さが0.04mm〜1.0mm程度のポリエチレン
樹脂、ポリプロピレン樹脂、塩化ビニル樹脂、塩
化ビニリデン樹脂などからなるフイルムを言う。 Next, the entire stacked veneer is sealed with a synthetic resin film having excellent chemical resistance to prevent oxygen generated between the stacked veneers from escaping. Note that synthetic resin films with excellent chemical resistance include films made of polyethylene resin, polypropylene resin, vinyl chloride resin, vinylidene chloride resin, etc. and having a thickness of about 0.04 mm to 1.0 mm.
つづいて、上記の合成樹脂フイルムで密封され
た単板をそのまま加温養生し、単板内に含浸され
た過酸化水素水とアルカリ水溶液の反応を促進し
て単板を充分に漂白する。 Subsequently, the veneer sealed with the synthetic resin film is heated and cured as it is to promote the reaction between the hydrogen peroxide solution impregnated in the veneer and the alkaline aqueous solution, thereby sufficiently bleaching the veneer.
養生条件としては50〜70℃の温度で24〜48時間
程度保持すれば良い。 The curing conditions may be maintained at a temperature of 50 to 70°C for about 24 to 48 hours.
以下、本発明の実施例を記す。 Examples of the present invention will be described below.
実施例
厚さ0.7mm×幅350mm×長さ1850mmのアユース材
の乾燥単板500枚づつをそれぞれ減圧、加圧し得
る容器内に封入し、まず５mmHg減圧後下記の組
成からなる過酸化水素水溶液とアルカリ水溶液を
それぞれの容器に注入し、15Kg／cm2に加圧して30
分間保持した。Example 500 dry veneers of Ayuse wood with a thickness of 0.7 mm x width of 350 mm x length of 1850 mm were each sealed in a container that can be depressurized and pressurized, and after first depressurizing by 5 mmHg, they were mixed with an aqueous hydrogen peroxide solution having the following composition. Pour alkaline aqueous solution into each container, pressurize to 15Kg/cm 2 and boil for 30 minutes.
Hold for minutes.
ついで、それら二種類の単板を容器内から取り
出して、それぞれの単板を一枚づつ交互に重ね合
わせて1000枚を一山とした。直ちにそれら一山の
単板をポリエチレン樹脂フイルムで密封後そのま
ま60℃の恒温室にて約24時間養生し、内部まで完
全に漂白されたアユース材単板を得た。 Next, these two types of veneers were taken out from the container, and each type of veneer was alternately stacked one on top of the other to form a pile of 1,000 veneers. Immediately, each pile of veneers was sealed with a polyethylene resin film and then cured in a constant temperature room at 60°C for about 24 hours to obtain Ayuse wood veneers that were completely bleached inside.
過酸化水素水溶液の組成（１中）
過酸化水素水（35％品） 200g
アルコールスルホン酸 2g
消泡剤 1g
水 800g
アルカリ水溶液の組成（１中）
アンモニア水（25％品） 2g
ケイ酸ソーダ 5g
アルコールスルホン酸 1g
水 992g
〔発明の効果〕
本発明の効果を列挙すると、以下の通りであ
る。Composition of aqueous hydrogen peroxide solution (in 1) Hydrogen peroxide solution (35% product) 200g Alcohol sulfonic acid 2g Antifoaming agent 1g Water 800g Composition of aqueous alkaline solution (in 1) Aqueous ammonia (25% product) 2g Sodium silicate 5g Alcohol sulfonic acid 1g Water 992g [Effects of the Invention] The effects of the present invention are listed below.
(1) 従来の浸漬法等の漂白法に比べて、過酸化水
素水中に触媒を混入していないので、漂白液の
再使用が出来るだけでなく、廃液の処理量も少
なくて良いので経済的である。(1) Compared to conventional bleaching methods such as immersion methods, since no catalyst is mixed in the hydrogen peroxide solution, not only can the bleaching solution be reused, but the amount of waste fluid to be treated can be reduced, making it economical. It is.
(2) 過酸化水素水を含浸した単板とアルカリ水溶
液を含浸した単板を交互に重ね合わせて過酸化
水素水の分解反応を促進するため、重ね合わさ
れた単板内部から効果的に漂白できる。(2) The veneers impregnated with hydrogen peroxide solution and the veneers impregnated with alkaline aqueous solution are stacked alternately to promote the decomposition reaction of the hydrogen peroxide solution, making it possible to effectively bleach the stacked veneers from within. .
(3) 単板全体を合成樹脂フイルムで密封している
ため、発生した酸素が周辺に飛散しにくく、漂
白効果が高い。(3) Since the entire veneer is sealed with a synthetic resin film, the generated oxygen is difficult to scatter to the surrounding area, and the bleaching effect is high.
(4) 漂白液の使用量が少ないので経済的であるだ
けでなく、万一反応が急激に生じても安全であ
る。(4) Not only is it economical because the amount of bleaching solution used is small, but it is also safe even if a reaction occurs suddenly.
Claims (1)
水溶液を含浸した単板を一枚毎に重ね合わせた
後、該重ね合わせた単板全体を耐薬品性合成樹脂
フイルムで密封し、ついでそのまま加温養生する
ことを特徴とする単板の漂白方法。1. After stacking one veneer impregnated with an aqueous hydrogen peroxide solution and one veneer impregnated with an aqueous alkali solution, the entire stacked veneer is sealed with a chemical-resistant synthetic resin film, and then heated as it is. A method of bleaching veneer that involves curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13718383A JPS6027502A (en) | 1983-07-27 | 1983-07-27 | Method of bleaching veneer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13718383A JPS6027502A (en) | 1983-07-27 | 1983-07-27 | Method of bleaching veneer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6027502A JPS6027502A (en) | 1985-02-12 |
| JPH0350684B2 true JPH0350684B2 (en) | 1991-08-02 |
Family
ID=15192742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13718383A Granted JPS6027502A (en) | 1983-07-27 | 1983-07-27 | Method of bleaching veneer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6027502A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6011309A (en) * | 1983-06-30 | 1985-01-21 | 松下電工株式会社 | Method of decoloring wood |
-
1983
- 1983-07-27 JP JP13718383A patent/JPS6027502A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6011309A (en) * | 1983-06-30 | 1985-01-21 | 松下電工株式会社 | Method of decoloring wood |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6027502A (en) | 1985-02-12 |
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