JPH06134300A - Absorbing element of oil-containing liquid - Google Patents
Absorbing element of oil-containing liquidInfo
- Publication number
- JPH06134300A JPH06134300A JP28755092A JP28755092A JPH06134300A JP H06134300 A JPH06134300 A JP H06134300A JP 28755092 A JP28755092 A JP 28755092A JP 28755092 A JP28755092 A JP 28755092A JP H06134300 A JPH06134300 A JP H06134300A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- water
- highly
- containing liquid
- permeable
- 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
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、魚介類、肉類のドリ
ップ等、油分を含有した液体の吸収体に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil-containing liquid absorber such as a drip of seafood and meat.
【０００２】[0002]
【従来の技術】従来、魚介類、肉類等の生鮮食品は、小
売りの段階でトレー等の容器に収容され、パックされ店
頭において販売されている。ところが、このような生鮮
食品を常温下で店頭においたり、購入者が持ち帰るとき
には、生鮮食品からドリップと呼ばれる液汁が発生して
容器の底部にたまる。この容器の底部にたまったドリッ
プは、不快な臭気を発生したり、鮮度を低下させるの
で、容器の底部には吸収体を敷いて、このドリップを吸
収するようにしている。2. Description of the Related Art Conventionally, fresh foods such as seafood and meat are stored in containers such as trays at the stage of retailing, packed and sold in stores. However, when such a fresh food is put in a store at room temperature or brought back by the purchaser, a juice called drip is generated from the fresh food and accumulates at the bottom of the container. Since the drip accumulated at the bottom of the container causes an unpleasant odor and reduces freshness, an absorber is laid on the bottom of the container to absorb the drip.
【０００３】このような生鮮食品の吸収体としては、高
吸水性樹脂を用いたものが存在している。As an absorbent for such a fresh food, there is an absorbent using a super absorbent resin.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来の生鮮食品の吸収体では、高吸水性樹脂を用いている
にもかかわらず、生鮮食品が魚介類、肉類である場合に
は、魚介類、肉類から発生するドリップを充分に吸収す
ることができないという課題を有していた。これは、魚
介類、肉類から発生するドリップには、油分が含まれて
いるため、この油分が高吸水性樹脂の吸水作用を阻害
し、高吸水性樹脂が吸水作用を充分に発揮しなくなるか
らである。However, in the above-described conventional fresh food absorber, when the fresh food is seafood or meat, the seafood, although the superabsorbent resin is used, There has been a problem that the drip generated from meat cannot be sufficiently absorbed. This is because the drip generated from seafood and meat contains oil, and this oil inhibits the water-absorbing action of the super-absorbent resin, and the super-absorbent resin does not sufficiently exhibit the water-absorbing action. Is.
【０００５】そこで、この発明の油分含有液の吸収体
は、上記従来の生鮮食品の吸収体が有する課題を解決す
ることを目的としてなされたものである。Therefore, the oil-containing liquid absorbent of the present invention has been made for the purpose of solving the problems of the conventional fresh food absorbent.
【０００６】[0006]
【課題を解決するための手段】そのため、この発明の油
分含有液の吸収体は、耐水、耐油性材料からなる通水、
通油性外装材１に高吸水性樹脂２および高吸油性樹脂３
を収容したものとしている。そして、前記通水、通油性
外装材１は、その一部に、印刷８が施された合成樹脂基
材９の上に合成樹脂皮膜１０が被覆された表示体７を接
着したものとしてもよい。Therefore, the absorbent body of the oil-containing liquid of the present invention is provided with a water-permeable and oil-permeable material,
Oil-permeable exterior material 1 with highly water-absorbent resin 2 and highly oil-absorbent resin 3
Is assumed to have been housed. Further, the water-permeable and oil-permeable exterior material 1 may be formed by adhering a part of the display body 7 in which the synthetic resin film 10 is coated on the synthetic resin base material 9 on which the print 8 is applied. .
【０００７】[0007]
【作用】上記手段を施したため、この発明の油分含有液
の吸収体は、高吸油性樹脂３により油分を吸収すると共
に、高吸水性樹脂２により水分を吸収する。By virtue of the above-described means, the oil-containing liquid absorber of the present invention absorbs oil by the highly oil-absorbent resin 3 and absorbs water by the highly water-absorbent resin 2.
【０００８】[0008]
【実施例】以下、この発明の油分含有液の吸収体の構成
を、実施例として示した図面に基づいて説明する。図
１、図２は、食品用トレーに使用され、魚介類、肉類か
ら発生するドリップの吸収に適したこの発明の油分含有
液の吸収体を示している。この吸収体は、袋状とした通
水、通油性外装材１の内部に、高吸水性樹脂２および高
吸油性樹脂３を収容している。EXAMPLES The constitution of the absorber for oil-containing liquid of the present invention will be described below with reference to the drawings shown as examples. 1 and 2 show an oil-containing liquid absorber of the present invention which is used for food trays and is suitable for absorbing drip generated from seafood and meat. The absorbent body contains a highly water-absorbent resin 2 and a highly oil-absorbent resin 3 inside a bag-like water-permeable and oil-permeable exterior material 1.
【０００９】前記通水、通油性外装材１は、二枚のシー
ト材料を重ねその全周縁をシールして形成されたもので
あり、熱溶着性樹脂を含有する不織布または編織布、あ
るいは多数の微細孔を有するフィルムまたはシートとし
た耐水、耐油性材料を用いることができる。前記高吸水
性樹脂２としては、従来から知られているもの、例えば
セルロース化合物、ポリアクリル酸化合物などを用いる
ことができる。また、前記高吸油性樹脂３としては、例
えばオレオソーブ（株式会社日本触媒商品名）を用いる
ことができる。この高吸油性樹脂３は、炭素数１０〜１
６の一価脂肪族アルコールのメタアクリレートを主成分
としてなる分子中に１個の重合性不飽和基を有する単量
体と、分子中に少なくとも２個の重合性不飽和基を有す
る架橋性単量体からなる単量体成分を重合して得られる
架橋重合体からなるものである。そして、この高吸油性
樹脂３は、食用油などの脂肪酸エステルを含む広範な種
類の油に対して吸油倍率、吸油速度および吸油後の保油
能に優れ、しかも低温下においても吸油性能が低下する
ことのない性質を有している。The water-permeable and oil-permeable exterior material 1 is formed by laminating two sheet materials and sealing the entire peripheral edge thereof, and is made of a non-woven fabric or a woven fabric containing a heat-welding resin, or a large number of them. A water-resistant or oil-resistant material formed into a film or sheet having fine pores can be used. As the super absorbent resin 2, a conventionally known one, for example, a cellulose compound or a polyacrylic acid compound can be used. As the highly oil-absorbent resin 3, for example, oleosorb (trade name of Nippon Shokubai Co., Ltd.) can be used. This highly oil-absorbent resin 3 has 10 to 1 carbon atoms.
6 as a main component of a monohydric aliphatic alcohol methacrylate and a monomer having one polymerizable unsaturated group in the molecule, and a crosslinkable monomer having at least two polymerizable unsaturated groups in the molecule. It is composed of a cross-linked polymer obtained by polymerizing a monomer component composed of a monomer. The highly oil-absorbent resin 3 is excellent in oil absorption ratio, oil absorption rate and oil retaining ability after oil absorption for a wide variety of oils including fatty acid esters such as edible oil, and further has low oil absorption performance even at low temperatures. It has the property that it does not.
【００１０】前記高吸水性樹脂２および高吸油性樹脂３
は、そのまま通水、通油性外装材１の内部に収容しても
よいが、例えば、図３、図４に示したように、シート片
４の間に複合させて挟み込んでもよい。図３に示した実
施例では、シート片４に多数の凹部５を点在させ、これ
らの凹部５に高吸油性樹脂３を収容すると共に、高吸油
性樹脂３上およびシート片４上に高吸水性樹脂２を散布
し、シート片４を覆い被せることにより、高吸水性樹脂
２および高吸油性樹脂３をシート片４の間に複合させて
挟み込んでいる。図４に示した実施例では、シート片４
に多数の溝部６を格子状に設け、これらの溝部６に高吸
油性樹脂３を収容すると共に、高吸油性樹脂３上および
シート片４上に高吸水性樹脂２を散布し、シート片４を
覆い被せることにより、高吸水性樹脂２および高吸油性
樹脂３をシート片４の間に複合させて挟み込んでいる。
このシート片４は、ドリップを高吸水性樹脂２および高
吸油性樹脂３に案内し得るものであれば、特に限定され
ることはない。Highly water-absorbent resin 2 and highly oil-absorbent resin 3
The water may be stored in the water-permeable or oil-permeable exterior material 1 as it is, but may be sandwiched between the sheet pieces 4 as shown in FIGS. 3 and 4, for example. In the embodiment shown in FIG. 3, a large number of recesses 5 are scattered in the sheet piece 4, the highly oil-absorbent resin 3 is housed in these recesses 5, and the highly oil-absorbent resin 3 and the sheet piece 4 are made to have a high height. The highly water-absorbent resin 2 and the highly oil-absorbent resin 3 are compounded and sandwiched between the sheet pieces 4 by spraying the water-absorbent resin 2 and covering the sheet pieces 4. In the embodiment shown in FIG. 4, the sheet piece 4
A large number of groove portions 6 are provided in a lattice shape, the highly oil-absorbent resin 3 is accommodated in these groove portions 6, and the highly water-absorbent resin 2 is sprinkled on the highly oil-absorbent resin 3 and the sheet piece 4 to form the sheet piece 4 The highly water-absorbent resin 2 and the highly oil-absorbent resin 3 are compounded and sandwiched between the sheet pieces 4 by covering them.
The sheet piece 4 is not particularly limited as long as it can guide the drip to the highly water-absorbent resin 2 and the highly oil-absorbent resin 3.
【００１１】なお、前記高吸水性樹脂２および高吸油性
樹脂３は、先に例示した物質に特に限定されることはな
いが、吸収された水や油を分子内に取り込んで逃がさな
いようにした自己膨潤性の吸水、吸油樹脂であるのが好
ましい。また、高吸水性樹脂２および高吸油性樹脂３の
前記通水、通油性外装材１の内部への収容割合は、魚介
類、肉類から発生する通常のドリップの吸収に使用する
場合は、高吸水性樹脂：高吸油性樹脂＝１：１〜１：２
程度とするのが好ましいが、特に限定されることはな
い。The superabsorbent resin 2 and the superabsorbent resin 3 are not particularly limited to the above-exemplified substances, but they should not absorb the absorbed water or oil in the molecule and escape. the self-swellable water, is preferably oil absorption resin. In addition, when the water-absorbent resin 2 and the oil-absorbent resin 3 are contained in the water-permeable and oil-permeable exterior material 1 when used for absorbing normal drip generated from seafood and meat, Water absorbing resin: High oil absorbing resin = 1: 1 to 1: 2
The degree is preferably, but not particularly limited.
【００１２】さらに、この発明の油分含有液の吸収体
は、図５、図６に示したように、袋状とした通水、通油
性外装材１の一部に、表示体７を接着したものとしても
よい。この表示体７は、使用上の注意点等の印刷８が施
された合成樹脂基材９の上に合成樹脂皮膜１０がラミネ
ート加工されるなどして被覆されている。この実施例で
は、合成樹脂基材９として、ポリエチレンフィルムを使
用し、合成樹脂皮膜１０としてポリエステルフィルムを
使用した。この実施例は、表示体７を帯状に形成してお
り、通水、通油性外装材１の表面部の一部を被うと共
に、通水、通油性外装材１の両側端部にこの表示体７の
両端をそれぞれ熱溶着している。また、図示していない
が、前記表示体７を円形、四角形、三角形等の小片状に
形成し、通水、通油性外装材１の表面部の一部に熱溶着
することもできる。このようにすることにより、表示体
７を接着した通水、通油性外装材１の一部以外は、通
水、通油性がまったく損なわれることがなく、また印刷
８面が食品に直に接触しないので、食品衛生上、極めて
安全なものとなる。Further, as shown in FIGS. 5 and 6, the absorbent body of the oil-containing liquid of the present invention has the indicator 7 bonded to a part of the bag-like water-permeable and oil-permeable exterior material 1. It may be one. The display body 7 is covered by a synthetic resin film 10 laminated on a synthetic resin base material 9 on which printings such as precautions for use are applied. In this example, a polyethylene film was used as the synthetic resin substrate 9 and a polyester film was used as the synthetic resin film 10. In this embodiment, the indicator 7 is formed in a strip shape and covers a part of the surface of the water-permeable, oil-permeable exterior material 1, and the display is provided on both side edges of the water-permeable, oil-permeable exterior material 1. Both ends of the body 7 are heat-welded. Although not shown, the display 7 may be formed into a small piece such as a circle, a quadrangle, or a triangle, and heat-welded to a part of the surface of the water-permeable or oil-permeable outer casing 1. By doing so, except for a part of the water-permeable and oil-permeable exterior material 1 to which the display body 7 is adhered, the water-permeable and oil-permeable properties are not impaired at all, and the printed surface 8 directly contacts the food. Therefore, it is extremely safe in terms of food hygiene.
【００１３】そこで、この発明の油分含有液の吸収体
は、魚介類、肉類を収容した食品用トレーの底部にその
まま敷いて使用すると、魚介類、肉類から発生するドリ
ップは、通水、通油性外装材１、シート片４を通過し
て、ドリップ中の油分が高吸油性樹脂３に吸収され、ま
たドリップ中の水分が高吸水性樹脂２に吸収されること
になる。Therefore, when the oil-containing liquid absorber of the present invention is laid and used as it is on the bottom of a food tray containing seafood and meat, the drip generated from the seafood and meat is water-permeable and oil-permeable. After passing through the exterior material 1 and the sheet piece 4, the oil content in the drip is absorbed by the highly oil-absorbent resin 3, and the water content in the drip is absorbed by the highly water-absorbent resin 2.
【００１４】なお、上記実施例では、この発明の油分含
有液の吸収体として、魚介類、肉類から発生するドリッ
プの吸収に適したものについて説明したが、このような
ドリップ以外に油分を含有した液体であればどのような
ものにでも、この発明の油分含有液の吸収体は、良好な
状態として使用できることはいうまでもない。次に、以
上のように構成されたこの発明の油分含有液の吸収体、
および比較例として調製した吸収体を用いて、下記の方
法により行った油分含有液の吸収試験について説明す
る。試験結果は、表１に示す。In the above examples, the absorbent for the oil-containing liquid of the present invention was described as being suitable for absorbing the drip generated from seafood and meat. However, in addition to such drip, oil was contained. It goes without saying that the absorber of the oil-containing liquid of the present invention can be used in a good state in any liquid. Next, the absorber of the oil-containing liquid of the present invention configured as described above,
And the absorption test of the oil-containing liquid performed by the following method using the absorber prepared as a comparative example will be described. The test results are shown in Table 1.
【００１５】（試料の調製）この発明の実施品は、ポリ
プロピレンパック（１０ｃｍ×１０ｃｍ、目付け１００
ｇ／ｍ2 ）に、高吸水性樹脂５ｇおよび高吸油性樹脂１
０ｇを収容した。比較品は、ポリプロピレンパック（１
０ｃｍ×１０ｃｍ、目付け１００ｇ／ｍ 2 ）に、高吸水
性樹脂５ｇを収容した。(Preparation of Sample)
Propylene pack (10 cm x 10 cm, basis weight 100
g / m2), 5 g of highly water-absorbent resin and 1 of highly oil-absorbent resin
It contained 0 g. Comparative product is polypropylene pack (1
0 cm x 10 cm, basis weight 100 g / m 2), High water absorption
5 g of the functional resin was contained.
【００１６】（油分含有液の調製）油分含有液Ｉは、大
豆油２０ｇと水８０ｇをホモジナイザーにより５０００
ｒｐｍで５分間、混合した。油分含有液IIは、大豆油４
０ｇと水６０ｇをホモジナイザーにより５０００ｒｐｍ
で５分間、混合した。(Preparation of Oil-Containing Liquid) Oil-containing liquid I was prepared by mixing 20 g of soybean oil and 80 g of water with a homogenizer to obtain 5000.
Mix at rpm for 5 minutes. Oil-containing liquid II is soybean oil 4
0g and 60g of water are 5000rpm by homogenizer.
And mixed for 5 minutes.
【００１７】（試験方法）上記試料のそれぞれを油分含
有液Ｉ、IIに１時間浸漬した後引き上げ、２００メッシ
ュの金網上で２０ｇ／ｃｍ2 の荷重をかけ、試料に保持
されない油分含有液を充分に流下させた後、試料の重量
を測定し、次式により油分含有液の吸収量を算出した。(Test method) Each of the above-mentioned samples was immersed in the oil-containing liquids I and II for 1 hour and then pulled up, and a load of 20 g / cm 2 was applied on a 200-mesh wire net to sufficiently remove the oil-containing liquid not retained by the sample. After flowing down, the weight of the sample was measured, and the absorption amount of the oil-containing liquid was calculated by the following formula.
【００１８】油分含有液の吸収量＝浸漬後の試料重量−
浸漬前の試料重量 （試験結果）Absorption of oil-containing liquid = sample weight after immersion-
Sample weight before immersion (test results)
【００１９】[0019]
【表１】 [Table 1]
【００２０】（評価）表１から明らかなように、油分含
有液中の油分の含有量が２０ｇ増加（油分含有液Ｉ→油
分含有液II）すると、比較品では油分含有液の吸収量が
それ以上（２５ｇ）減少するが、実施品では油分含有液
の吸収量がそれほど（８ｇ）減少しない。したがって、
この発明の油分含有液の吸収体は、高吸水性樹脂の吸水
作用がそれほど阻害されることなく、高吸油性樹脂によ
り油分含有液中の油分が吸収されているといえる。(Evaluation) As is apparent from Table 1, when the oil content in the oil-containing liquid increased by 20 g (oil-containing liquid I → oil-containing liquid II), the absorption amount of the oil-containing liquid decreased in the comparative product. Although it decreases by the above (25 g), the absorbed amount of the oil-containing liquid does not decrease so much (8 g) in the actual product. Therefore,
It can be said that the absorber of the oil-containing liquid of the present invention absorbs the oil in the oil-containing liquid by the highly oil-absorbing resin without significantly impairing the water absorbing action of the superabsorbent resin.
【００２１】[0021]
【発明の効果】この発明の油分含有液の吸収体は、以上
に述べたように構成されており、高吸油性樹脂３により
油分を吸収すると共に、高吸水性樹脂２により水分を吸
収するので、魚介類、肉類から発生するドリップ等、油
分を含有した液体を吸収する場合に、高吸水性樹脂の吸
水作用がそれほど阻害されることなく、好適な状態で使
用することができるものとなった。The absorber of the oil-containing liquid of the present invention is constructed as described above, and absorbs oil by the highly oil-absorbent resin 3 and absorbs water by the highly water-absorbent resin 2. , When absorbing liquids containing oil such as drip generated from seafood, meat, etc., the water-absorbing action of the superabsorbent resin can be used in a suitable state without being significantly impaired. .
【図１】この発明の油分含有液の吸収体の一実施例を示
す斜視図である。FIG. 1 is a perspective view showing an embodiment of an absorber for oil-containing liquid of the present invention.
【図２】図１中のＡ−Ａ線による拡大断面図である。FIG. 2 is an enlarged cross-sectional view taken along the line AA in FIG.
【図３】この発明の油分含有液の吸収体における高吸水
性樹脂および高吸油性樹脂をシート片の間に複合させて
挟み込んだ状態の一例を示す説明図である。FIG. 3 is an explanatory view showing an example of a state in which a highly water-absorbent resin and a highly oil-absorbent resin in the absorbent body for oil-containing liquid of the present invention are compounded and sandwiched between sheet pieces.
【図４】この発明の油分含有液の吸収体における高吸水
性樹脂および高吸油性樹脂をシート片の間に複合させて
挟み込んだ状態の他例を示す説明図である。FIG. 4 is an explanatory view showing another example of a state in which the highly water-absorbent resin and the highly oil-absorbent resin in the oil-containing liquid absorbent body of the present invention are compounded and sandwiched between the sheet pieces.
【図５】この発明の油分含有液の吸収体の他実施例を示
す斜視図である。FIG. 5 is a perspective view showing another embodiment of the absorber for oil-containing liquid according to the present invention.
【図６】図５中のＢ−Ｂ線による拡大断面図である。6 is an enlarged cross-sectional view taken along the line BB in FIG.
１ 通水、通油性外装材 ２ 高吸水性樹脂 ３ 高吸油性樹脂 ７ 表示体 ８ 印刷 ９ 合成樹脂基材 １０ 合成樹脂皮膜 1 Water-permeable, oil-permeable exterior material 2 Highly water-absorbent resin 3 Highly oil-absorbent resin 7 Display 8 Printing 9 Synthetic resin base material 10 Synthetic resin film
Claims (2)
外装材（１）に高吸水性樹脂（２）および高吸油性樹脂
（３）を収容したことを特徴とする油分含有液の吸収
体。1. An oil-containing liquid, characterized in that a highly water-absorbent resin (2) and a highly oil-absorbent resin (3) are contained in a water-permeable and oil-permeable exterior material (1) made of a water-resistant and oil-resistant material. Absorber.
に、印刷（８）が施された合成樹脂基材（９）の上に合
成樹脂皮膜（１０）が被覆された表示体（７）を接着し
たことを特徴とする請求項１記載の油分含有液の吸収
体。2. A display in which a synthetic resin film (10) is coated on a synthetic resin substrate (9) printed (8) on a part of the water-permeable and oil-permeable exterior material (1). The oil-containing liquid absorbent body according to claim 1, wherein the body (7) is adhered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28755092A JPH06134300A (en) | 1992-10-26 | 1992-10-26 | Absorbing element of oil-containing liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28755092A JPH06134300A (en) | 1992-10-26 | 1992-10-26 | Absorbing element of oil-containing liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06134300A true JPH06134300A (en) | 1994-05-17 |
Family
ID=17718795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28755092A Pending JPH06134300A (en) | 1992-10-26 | 1992-10-26 | Absorbing element of oil-containing liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06134300A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016064391A (en) * | 2014-07-30 | 2016-04-28 | 三菱マテリアル株式会社 | Water absorption oil repellent tool, and water absorption method |
| US10208210B2 (en) | 2014-07-30 | 2019-02-19 | Mitsubishi Materials Corporation | Hydrophilic oil repellent and production method of same, surface coating material, coating film, resin composition, oil-water separation filter material, and porous body |
| US10294125B2 (en) | 2014-07-30 | 2019-05-21 | Mitsubishi Materials Corporation | Filter medium, method for producing filter medium, water treatment module, and water treatment device |
| US10364360B2 (en) | 2014-07-30 | 2019-07-30 | Mitsubishi Materials Corporation | Surface coating material, coating film, and hydrophilic oil repellent member |
-
1992
- 1992-10-26 JP JP28755092A patent/JPH06134300A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016064391A (en) * | 2014-07-30 | 2016-04-28 | 三菱マテリアル株式会社 | Water absorption oil repellent tool, and water absorption method |
| US10208210B2 (en) | 2014-07-30 | 2019-02-19 | Mitsubishi Materials Corporation | Hydrophilic oil repellent and production method of same, surface coating material, coating film, resin composition, oil-water separation filter material, and porous body |
| US10294125B2 (en) | 2014-07-30 | 2019-05-21 | Mitsubishi Materials Corporation | Filter medium, method for producing filter medium, water treatment module, and water treatment device |
| US10364360B2 (en) | 2014-07-30 | 2019-07-30 | Mitsubishi Materials Corporation | Surface coating material, coating film, and hydrophilic oil repellent member |
| US10399868B2 (en) | 2014-07-30 | 2019-09-03 | Mitsubishi Materials Corporation | Oil-water separation apparatus and drainage system |
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