JPH0429522B2 - - Google Patents
Info
- Publication number
- JPH0429522B2 JPH0429522B2 JP58119759A JP11975983A JPH0429522B2 JP H0429522 B2 JPH0429522 B2 JP H0429522B2 JP 58119759 A JP58119759 A JP 58119759A JP 11975983 A JP11975983 A JP 11975983A JP H0429522 B2 JPH0429522 B2 JP H0429522B2
- Authority
- JP
- Japan
- Prior art keywords
- wood
- hydrogen peroxide
- decolorizing
- decolorization
- decomposition
- 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 48
- 239000002023 wood Substances 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 7
- 239000008393 encapsulating agent Substances 0.000 claims description 2
- 238000004042 decolorization Methods 0.000 description 25
- 230000000694 effects Effects 0.000 description 16
- 238000001723 curing Methods 0.000 description 14
- 238000000354 decomposition reaction Methods 0.000 description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000004061 bleaching Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 241001337993 Agathis <wasp> Species 0.000 description 1
- 235000015392 Sesbania grandiflora Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【発明の詳細な説明】 〔技術分野〕 この発明は木材の脱色法に関する。[Detailed description of the invention] 〔Technical field〕 This invention relates to a method for decolorizing wood.
従来、木材の表面に過酸化水素液を塗布したの
ち、木材を、温度が室温〜高温（例えば100℃）
の条件下に養生（放置等）して脱色する方法があ
つた。さらに、脱色効果を高めるため、養生の際
に木材にスチームを当てる、いわゆるスチーム養
生法が開発された。このスチーム養生法によつて
木材の脱色度や脱色速度が非常に向上したが、木
材によつては脱色度をさらに得たい場合や、脱色
速度をさらに高め早くし上げたい場合があり、そ
の開発が望まれていた。
Conventionally, after applying a hydrogen peroxide solution to the surface of the wood, the wood was heated to a temperature between room temperature and high temperature (e.g. 100°C).
There was a method of curing (leaving, etc.) under the following conditions to decolorize. Furthermore, in order to enhance the bleaching effect, a so-called steam curing method was developed in which the wood is exposed to steam during curing. This steam curing method has greatly improved the degree and speed of decolorization of wood, but depending on the type of wood, there may be cases where it is desired to further increase the degree of decolorization, or where it is desired to increase the rate of decolorization even further. was desired.
過酸化水素液による脱色作用は、過酸化水素の
下記２種類の分解に起因する。すなわち、ひとつ
は、木材の脱色に大きな効果を発揮する分解であ
る。その化学式が、
H2O2→HOO-＋H+ ……
のように表され、HOO-の働きにより還元性の脱
色が行われる。もうひとつは、式の分解よりも
脱色効果の弱い分解である。その化学式が、
H2O2→H2Ｏ＋（Ｏ） ……
のように表され、発生期酸素（Ｏ）の働きにより
酸化性の脱色が行われる。過酸化水素による木材
の脱色は上記２種類の分解両方によつて行われる
のである。 The decolorizing effect of a hydrogen peroxide solution is caused by the following two types of decomposition of hydrogen peroxide. One is decomposition, which is highly effective in decolorizing wood. Its chemical formula is expressed as H 2 O 2 →HOO - +H + ..., and reductive decolorization is performed by the action of HOO - . The other type is decomposition, which has a weaker decolorizing effect than formula decomposition. Its chemical formula is expressed as H 2 O 2 →H 2 O+(O)..., and oxidative decolorization is performed by the action of nascent oxygen (O). Decolorization of wood by hydrogen peroxide is carried out by both of the above two types of decomposition.
しかし、従来の脱色法においては、過酸化水素
の塗布面を外気にさらした状態で養生を行つてい
たため、前記式の分解により生じた発生期酵素
（Ｏ）が外気中に大量に逃げてしまい、H2O2を無
駄に消費して、脱色効果を低下させる原因になつ
ていた。しかも、そのように発生期酸素（Ｏ）が
式の分解が起きている反応系から絶えず大量に
逃散するということは、式の反応が矢印方向に
進むのに極めて好条件な環境であることを意味す
るため、脱色効果の強い式の分解反応が抑制さ
れ、脱色効果の弱い方の分解（式の分解）が促
進されて、結果的には、脱色作用を非能率的にし
ていた。また、従来の脱色法においては、養生中
に過酸化水素そのものが気化し蒸気となつて外気
中に逃げてしまうため、この意味でも、過酸化水
素が無駄に浪費されていた。 However, in the conventional decolorization method, the surface coated with hydrogen peroxide was cured while being exposed to the outside air, so a large amount of the nascent enzyme (O) produced by the decomposition of the above formula escaped into the outside air. This results in wasteful consumption of H 2 O 2 and a decrease in the decolorizing effect. Moreover, the fact that a large amount of nascent oxygen (O) constantly escapes from the reaction system where the decomposition of the formula is occurring indicates that the environment is extremely favorable for the reaction of the formula to proceed in the direction of the arrow. Therefore, the decomposition reaction of the formula with a stronger decolorizing effect was suppressed, and the decomposition of the formula with a weaker decolorizing effect (decomposition of the formula) was promoted, resulting in an inefficient decolorizing action. Furthermore, in conventional decolorization methods, hydrogen peroxide itself vaporizes during curing and escapes into the outside air as steam, so hydrogen peroxide is wasted in this sense as well.
木材の脱色度や脱色速度を向上させるために
は、上記のような問題点を克服しなければならな
い。 In order to improve the degree and speed of decolorization of wood, the above-mentioned problems must be overcome.
そこで、この発明は、上記のような観点に立
ち、過酸化水素の浪費の抑制、良好な脱色度、脱
色処理時間の短縮が確実に図れる木材の脱色法を
提供することを目的とする。
Therefore, from the above-mentioned viewpoints, it is an object of the present invention to provide a method for decolorizing wood that can reliably suppress the waste of hydrogen peroxide, provide a good degree of decolorization, and shorten the decolorization treatment time.
発明者は、以上の目的を達成するため鋭意検討
を重ね、この発明を完成した。
The inventor has completed this invention after extensive studies to achieve the above objectives.
この発明は、過酸化水素液が塗布された木材を
スチーム養生する木材の脱色法において、木材の
表面に過酸化水素液を塗布したのちその塗布面を
被包物で被包するようにして外気から密封するこ
とを特徴とする木材の脱色法その要旨とする。以
下、これを、図面を参照しながら詳しく説明す
る。 This invention is a method for decolorizing wood that involves steam curing wood that has been coated with a hydrogen peroxide solution. A method for decolorizing wood, which is characterized by sealing the wood. This will be explained in detail below with reference to the drawings.
第１図は、この発明方法の前工程たる過酸化水
素液の塗布工程の一例をあらわす側断面図であ
る。 FIG. 1 is a side cross-sectional view showing an example of the hydrogen peroxide solution coating step, which is the pre-step of the method of the present invention.
まず、第１図にみるように、両面塗布用のロー
ルコータ２に単板１を挿入し、矢印方向に移動さ
せながらその上下両面に脱色液３，３を塗布す
る。つづいて、第３図にみるように、脱色液塗布
面を重ね合わせるようにして単板１……を積載
し、積載された単板１……の全体をビニールシー
ト，ポリエチレンシート等のシート材料５で包ん
だ状態でスチーム養生を行うのである。図中、４
は養生室である。こうして、積載された単板全体
をさらにビニールシート等で包むならば、さらに
逃散防止効果が高まり、かつ最上段の単板の表面
も外気に触れることがなくなるという点での逃散
防止効果も得られるようになるのである。 First, as shown in FIG. 1, a veneer 1 is inserted into a roll coater 2 for double-sided coating, and decolorizing liquids 3 are applied to both the upper and lower surfaces of the veneer 1 while moving in the direction of the arrow. Next, as shown in Figure 3, the veneers 1... are stacked so that the surfaces coated with the decolorizing liquid overlap, and the entire stacked veneers 1... are made of sheet material such as vinyl sheet, polyethylene sheet, etc. Steam curing is performed while wrapped in 5. In the diagram, 4
is a nursing room. In this way, if the entire stack of veneers is further wrapped with a vinyl sheet, etc., the escape prevention effect will be further enhanced, and the escape prevention effect will also be obtained in that the surface of the topmost veneer will not be exposed to the outside air. This is what happens.
第２図にみるように、表面に過酸化水素液を塗
布した木質単板を積層することも、過酸化水素の
塗布面を密封する作用がある。しかしながら、こ
の場合、積層体の表面は開放状態であつて密封性
は高くなく、発生期酸素の外気への逸失や過酸化
水素の気化蒸発の抑制作用はこの発明ほど強くは
なく、過酸化水素の浪費の抑制、良好な脱色度、
脱色処理時間の短縮が確実に図れるまでには至ら
ないし、加えて、木質単板間同士の密着している
必要があるなど実用性は高くない。これに対し、
この発明の場合は、積層体の表面を被包物で包む
という簡単な操作で高い密封性を実現でき、しか
も、木質単板の清掃状態に何ら注意を払う必要も
ないため、実用性が高い。 As shown in Figure 2, stacking wooden veneers coated with hydrogen peroxide solution also has the effect of sealing the surface coated with hydrogen peroxide. However, in this case, the surface of the laminate is open and the sealing performance is not high, and the effect of suppressing the loss of nascent oxygen to the outside air and the vaporization of hydrogen peroxide is not as strong as in this invention, and the hydrogen peroxide suppression of waste, good degree of decolorization,
It is not possible to reliably shorten the decolorization treatment time, and in addition, it is not very practical because the wooden veneers must be in close contact with each other. On the other hand,
In the case of this invention, high sealing performance can be achieved with a simple operation of wrapping the surface of the laminate with a covering material, and there is no need to pay any attention to the cleaning condition of the wooden veneer, so it is highly practical. .
この発明にかかる木材の脱色法において、過酸
化水素液を塗布する迄の工程に特別の制限はな
い。例えば、アルカリ液を塗布した木材を積載し
てアルカリ液が十分に木材に浸透するまで養生す
る等しても構わない。また、過酸化水素液を塗布
する際の方法や条件等に特別の制限はなく、例え
ば、スプレーを用いたり、木材を過酸化水素液中
に浸漬させたりしても構わない。実施例では、上
下両面に過酸化水素液を塗布していたが、どちら
か片面だけでも良い。 In the method for decolorizing wood according to the present invention, there are no particular restrictions on the steps up to applying the hydrogen peroxide solution. For example, wood coated with alkaline solution may be loaded and cured until the alkaline solution has sufficiently penetrated the wood. Furthermore, there are no particular restrictions on the method or conditions for applying the hydrogen peroxide solution; for example, a spray may be used or the wood may be immersed in the hydrogen peroxide solution. In the example, the hydrogen peroxide solution was applied to both the upper and lower surfaces, but it may be applied to only one side.
実施例においては、過酸化水素液塗布後の養生
の際に、スチームを当てながら木材の養生を行つ
ていたが、これに限られるものではなく、木材が
乾燥しない程度の湿度を有する雰囲気内での養生
であれば良い。 In the example, when curing the wood after applying the hydrogen peroxide solution, the wood was cured while applying steam, but the method is not limited to this. It's fine if it's taken care of.
養生の際の木材の積載枚数に特別の制限はな
い。また、実施例においては、積載された単板の
全体をビニールシート等で包み養生を行つていた
が、第４図にみるように、１枚の単板１をビニー
ルシート等のシート材料５で包み、これに養生を
施すようにしても構わない。図中、６は養生室で
ある。 There are no special restrictions on the number of timbers loaded during curing. In addition, in the embodiment, the entire stack of veneers was wrapped in a vinyl sheet or the like for curing, but as shown in FIG. You may also wrap it in water and apply curing to it. In the figure, 6 is a curing room.
この発明にかかる木材の脱色法において、被処
理物である木材は、実施例では単板であつたが、
これ以外の木質材料も被処理物の対象であること
は言うまでもない。ただ、外気からの密封方法が
積載によるものである場合、同一サイズのもので
あることが好ましい。過酸化水素液塗布面どうし
が全面において完全に密着し得るからである。 In the method for decolorizing wood according to the present invention, the wood to be treated was a veneer in the example, but
Needless to say, other wood materials are also objects to be treated. However, if the method of sealing from the outside air is by loading, it is preferable that the containers be of the same size. This is because the surfaces coated with the hydrogen peroxide solution can completely adhere to each other over the entire surface.
つぎに、この発明にかかる木材の脱色法に基づ
く実施例とこれに対する比較例とを挙げ、脱色度
の測定結果を示す。 Next, examples based on the method of decolorizing wood according to the present invention and comparative examples thereof will be given, and the results of measuring the degree of decolorization will be shown.
〔実施例 １〕
縦横600mm、厚み1.5mmのアガチス単板の上下両
面にNaOH3％水溶液計110gr／m2を塗布し、こ
れを乾燥させないように室温中で約12時間養生し
た。その後、単板上下両面にH2O245％水溶液計
90gr／m2を塗布し、これを１枚ポリエチレン製の
袋で密封した状態で100℃、100％R.Hの雰囲気内
で約２時間養生した。脱色度は、L*＝89.0，a*＝
−3.0，b*＝18.0であつた。[Example 1] A total of 110 gr/m 2 of a 3% NaOH aqueous solution was applied to the top and bottom surfaces of an agathis veneer with dimensions of 600 mm and width of 600 mm and a thickness of 1.5 mm, and the coat was cured at room temperature for about 12 hours so as not to dry. Then add H 2 O 2 45% aqueous solution meter to both top and bottom surfaces of the veneer.
90gr/m 2 was applied, and each sheet was sealed in a polyethylene bag and cured in an atmosphere of 100° C. and 100% RH for about 2 hours. The degree of decolorization is L * = 89.0, a * =
−3.0, b * = 18.0.
〔比較例 １〕
実施例２と同じ単板をH2O2水溶液塗布まで同
様に行つたのち、単板１枚を裸のまま実施例１と
同じ条件で約２時間養生した。脱色度はL*＝
84.0，a*＝−1.0，b*＝23.0であつた。[Comparative Example 1] The same veneer as in Example 2 was coated with an aqueous H 2 O 2 solution, and then one veneer was left bare and cured under the same conditions as in Example 1 for about 2 hours. The degree of decolorization is L * =
84.0, a * = -1.0, b * = 23.0.
実施例１と比較例１の脱色度の対比にみるよう
に、単板を被包物で包む方が脱色度が高かつた。 As can be seen from the comparison of the degree of decolorization between Example 1 and Comparative Example 1, the degree of decolorization was higher when the veneer was wrapped with an envelope.
以上のように、この発明にかかる木材の脱色法
は、過酸化水素が塗布された木材をスチーム養生
をする木材の脱色法において、木材の表面に過酸
化水素液を塗布したのちその塗布面を外気から密
封することを特徴としているので、脱色作用を行
う発生期酵素の外気への逸失や過酸化水素の気化
による蒸発が防止されるため、過酸化水素の浪費
が少なくなるとともに、脱色作用の効率が高まり
脱色度が上がる。また、発生期酸素の逃散が妨げ
られることは、過酸化水素の２種の分解のうち発
生期酸素を生じる分解が減少し脱色効果の高い分
解の方が増加することを効果するため、脱色作用
が非常に能率的になり、ひいては脱色に使用する
過酸化水素の量を節約することができるようにな
る。さらに、脱色効率の向上によつて脱色時間の
短縮が可能になるという効果がもたらされるよう
にもなるのである。加えて、養生の際、過酸化水
素の塗布面は被包物で被包されるため密封性が高
く、発生期酸素の外気への逸失や過酸化水素の気
化蒸発の抑制作用が強くて、過酸化水素の浪費の
抑制、良好な脱色度、脱色処理時間の短縮が確実
に図れる。
As described above, the method for decolorizing wood according to the present invention involves applying a hydrogen peroxide solution to the surface of the wood and then removing the coated surface. Since it is sealed from the outside air, it prevents the nascent enzyme that performs the decolorizing action from escaping into the outside air and prevents evaporation of hydrogen peroxide, which reduces wastage of hydrogen peroxide and prevents the decolorizing action from evaporating. Increased efficiency and degree of decolorization. In addition, preventing the escape of nascent oxygen has the effect that among the two types of decomposition of hydrogen peroxide, the decomposition that produces nascent oxygen decreases, and the decomposition that has a high decolorizing effect increases, so the decolorizing effect increases. becomes very efficient and thus the amount of hydrogen peroxide used for decolorization can be saved. Furthermore, the improved decolorization efficiency brings about the effect that the decolorization time can be shortened. In addition, during curing, the surface to which hydrogen peroxide is applied is encapsulated with an encapsulant, so it has a high sealing property, which has a strong effect of suppressing the loss of nascent oxygen to the outside air and the vaporization of hydrogen peroxide. It is possible to reliably suppress the waste of hydrogen peroxide, achieve a good degree of decolorization, and shorten the decolorization treatment time.
第１図は過酸化水素塗布工程をあらわす側断面
図、第２図は参考例にかかる木材の脱色法の一実
施例をモデル的にあらわす断面図、第３図および
第４図はこの発明にかかる木材の脱色法における
それぞれ異なる実施例をモデル的にあらわす断面
図、第５図は木材の脱色法の従来例をモデル的に
あらわす断面図である。
１……単板、３……脱色液、４，６，７……養
生室、５……シート材料。
Fig. 1 is a side cross-sectional view showing the hydrogen peroxide application process, Fig. 2 is a cross-sectional view showing a model of an embodiment of the wood decolorization method according to the reference example, and Figs. 3 and 4 are according to the present invention. FIG. 5 is a sectional view showing, as a model, different embodiments of the wood bleaching method. FIG. 5 is a sectional view showing a model of a conventional wood bleaching method. 1...Single board, 3...Decolorizing liquid, 4, 6, 7...Curing room, 5...Sheet material.
Claims (1)
生する木材の脱色法において、木材の表面に過酸
化水素液を塗布したのちその塗布面を被包物で被
包するようにして外気から密封することを特徴と
する木材の脱色法。 ２ 木材が単板である特許請求の範囲第１項記載
の木材の脱色法。[Scope of Claims] 1. In a method for decolorizing wood in which wood coated with a hydrogen peroxide solution is steam-cured, the hydrogen peroxide solution is applied to the surface of the wood, and then the coated surface is covered with an encapsulant. A method of decolorizing wood, which is characterized by sealing it from the outside air. 2. The method for decolorizing wood according to claim 1, wherein the wood is a veneer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11975983A JPS6011309A (en) | 1983-06-30 | 1983-06-30 | Method of decoloring wood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11975983A JPS6011309A (en) | 1983-06-30 | 1983-06-30 | Method of decoloring wood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6011309A JPS6011309A (en) | 1985-01-21 |
| JPH0429522B2 true JPH0429522B2 (en) | 1992-05-19 |
Family
ID=14769463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11975983A Granted JPS6011309A (en) | 1983-06-30 | 1983-06-30 | Method of decoloring wood |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6011309A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015107847A1 (en) | 2014-01-17 | 2015-07-23 | 株式会社ジェイエスピー | Propylene-based resin foam particle and foam particle molded body |
| EP2940070A1 (en) | 2014-05-01 | 2015-11-04 | Jsp Corporation | Molded article of polylactic acid-based resin expanded beads |
| EP3124527A1 (en) | 2015-07-30 | 2017-02-01 | JSP Corporation | Expanded polylactic acid resin beads and molded article of expanded polylactic acid resin beads |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6027501A (en) * | 1983-07-27 | 1985-02-12 | 段谷産業株式会社 | Method of bleaching veneer |
| JPS6027502A (en) * | 1983-07-27 | 1985-02-12 | 段谷産業株式会社 | Method of bleaching veneer |
| JP2741330B2 (en) * | 1993-09-13 | 1998-04-15 | 株式会社ペトカ | Metal-coated carbon fiber reinforced plastic pipe for rotating body and method of manufacturing the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5898205A (en) * | 1981-12-05 | 1983-06-11 | 段谷産業株式会社 | Method of dyeing wood veneer |
| JPS59192515A (en) * | 1983-04-15 | 1984-10-31 | 松下電工株式会社 | Method of decoloring woody veneer |
-
1983
- 1983-06-30 JP JP11975983A patent/JPS6011309A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5898205A (en) * | 1981-12-05 | 1983-06-11 | 段谷産業株式会社 | Method of dyeing wood veneer |
| JPS59192515A (en) * | 1983-04-15 | 1984-10-31 | 松下電工株式会社 | Method of decoloring woody veneer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015107847A1 (en) | 2014-01-17 | 2015-07-23 | 株式会社ジェイエスピー | Propylene-based resin foam particle and foam particle molded body |
| EP2940070A1 (en) | 2014-05-01 | 2015-11-04 | Jsp Corporation | Molded article of polylactic acid-based resin expanded beads |
| EP3124527A1 (en) | 2015-07-30 | 2017-02-01 | JSP Corporation | Expanded polylactic acid resin beads and molded article of expanded polylactic acid resin beads |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6011309A (en) | 1985-01-21 |
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