JP2018030111A - Oil absorbing sheet for grease interceptor - Google Patents
Oil absorbing sheet for grease interceptor Download PDFInfo
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- JP2018030111A JP2018030111A JP2016165448A JP2016165448A JP2018030111A JP 2018030111 A JP2018030111 A JP 2018030111A JP 2016165448 A JP2016165448 A JP 2016165448A JP 2016165448 A JP2016165448 A JP 2016165448A JP 2018030111 A JP2018030111 A JP 2018030111A
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- 239000004519 grease Substances 0.000 title claims abstract description 25
- 239000006260 foam Substances 0.000 claims abstract description 96
- 238000001179 sorption measurement Methods 0.000 claims abstract description 74
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 73
- 239000000835 fiber Substances 0.000 claims description 62
- 239000004094 surface-active agent Substances 0.000 abstract description 24
- 230000014759 maintenance of location Effects 0.000 abstract description 22
- 239000002351 wastewater Substances 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 176
- 235000019198 oils Nutrition 0.000 description 175
- 239000010410 layer Substances 0.000 description 88
- 239000003925 fat Substances 0.000 description 40
- 239000004745 nonwoven fabric Substances 0.000 description 32
- 239000004743 Polypropylene Substances 0.000 description 26
- -1 polypropylene Polymers 0.000 description 25
- 229920001155 polypropylene Polymers 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 24
- 229920005989 resin Polymers 0.000 description 17
- 239000011347 resin Substances 0.000 description 17
- 238000003475 lamination Methods 0.000 description 15
- 238000004062 sedimentation Methods 0.000 description 15
- 238000000926 separation method Methods 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 9
- 229920000728 polyester Polymers 0.000 description 8
- 239000002356 single layer Substances 0.000 description 8
- 229920000742 Cotton Polymers 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 238000007789 sealing Methods 0.000 description 5
- 230000010354 integration Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000009823 thermal lamination Methods 0.000 description 3
- 235000013311 vegetables Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 235000014593 oils and fats Nutrition 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 244000146553 Ceiba pentandra Species 0.000 description 1
- 235000003301 Ceiba pentandra Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000219146 Gossypium Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
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- Removal Of Floating Material (AREA)
- Water Treatment By Sorption (AREA)
- Laminated Bodies (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
本発明は、グリース阻集器用油吸着シートに関する。 The present invention relates to an oil adsorbing sheet for a grease interceptor.
グリース阻集器は、厨房や調理場から排出される排水に含まれる油脂分などによって、排水用配管設備の機能が著しく妨げられる場合に設置が義務づけられるものである。図２にグリース阻集器の例を示す。図示のグリース阻集器５０は、第１分離槽５１と第２分離槽６１と第３分離槽７１とからなり、排水の流路に設置される。第１分離層５１は、内部にバスケット（カゴ）が設けられ、排水中に含まれる野菜屑等のゴミをバスケットで除去する。第２分離槽６１は、第１分離槽５１で野菜屑等が除去された後の排水が流入し、水と油脂分の比重差を利用して油脂分を浮上分離させ、第２分離槽６１内に貯留する。第３分離層７１は、野菜屑及び油脂分が除去された排水が流入し、下水道へ排出する。
The grease interceptor is obliged to be installed when the function of the drainage piping facility is significantly hindered by the oil and fat contained in the drainage discharged from the kitchen or the kitchen. FIG. 2 shows an example of a grease interceptor. The illustrated
前記第２分離槽６１に貯留された油脂分は、定期的に除去する必要があるため、油吸着シートを、前記第２分離槽６１の油脂分に被せて油脂分を吸着させ、油脂分吸着後の油吸着シートをグリース阻集器５０から取り出して廃棄処分することが行われている。
Since the oil and fat stored in the second separation tank 61 needs to be removed periodically, an oil adsorption sheet is placed on the oil and fat in the second separation tank 61 to adsorb the oil and fat, and the fat and oil adsorption A later oil adsorbing sheet is taken out from the
従来の油吸着シートとして、プロピレン系樹脂製綿層とプロピレン系樹脂製不織布層が積層されたものがある（特許文献１）。
しかし、従来の油吸着シートは、油脂分の吸着保持が高くない問題がある。さらに、従来の油吸着シートは、排水に界面活性剤が含まれている場合、グリース阻集器内の油脂分吸収のために油脂分に被せて一晩放置すると、グリース阻集器内で沈むことが多く、グリース阻集器内の底から油吸着シートをすくい上げて廃棄しなければならず、作業が面倒な問題がある。
As a conventional oil adsorbing sheet, there is one in which a propylene-based resin cotton layer and a propylene-based resin nonwoven fabric layer are laminated (Patent Document 1).
However, the conventional oil adsorbing sheet has a problem that the adsorption and retention of oil and fat is not high. Furthermore, when a conventional oil adsorbing sheet contains a surfactant in the drainage, it can sink in the grease interceptor if it is left on the oil and fat overnight to absorb the fat and oil in the grease interceptor. In many cases, it is necessary to scoop up and discard the oil adsorbing sheet from the bottom of the grease interceptor, which causes a troublesome work.
本発明は前記の点に鑑みなされたものであって、油脂分の吸着性および保持性が高く、かつ界面活性剤を含む排水に対して沈降し難いグリース阻集器用油吸着シートの提供を目的とする。 The present invention has been made in view of the above points, and an object thereof is to provide an oil adsorbing sheet for a grease interceptor that has high adsorption and retention of fats and oils and does not easily settle against waste water containing a surfactant. To do.
請求項１の発明は、グリース阻集器用油吸着シートにおいて、前記油吸着シートは、連続気泡構造を有するポリオレフィン系樹脂発泡体の層を有し、前記油吸着シートの少なくとも一面が、前記連続気泡構造を有するポリオレフィン系樹脂発泡体の切り出し面で構成されていることを特徴とする。
The invention according to
請求項２の発明は、請求項１において、前記連続気泡構造を有するポリオレフィン系樹脂発泡体の切り出し面が、前記グリース阻集器に貯留された油脂分と接するように配設されることを特徴とする。
Invention of
請求項３の発明は、請求項１または２において、前記ポリオレフィン系樹脂発泡体の層が２層以上からなることを特徴とする。 A third aspect of the present invention is characterized in that, in the first or second aspect, the polyolefin resin foam layer comprises two or more layers.
請求項４の発明は、請求項３において、前記ポリオレフィン系樹脂発泡体の層間に繊維層を有することを特徴とする。 The invention of claim 4 is characterized in that in claim 3, a fiber layer is provided between the polyolefin resin foams.
請求項１の発明によれば、油吸着シートが、連続気泡構造を有するポリオレフィン系樹脂発泡体の層を有するため、油脂分の吸着性を有し、かつ界面活性剤を含む排水に対しても撥水性に優れ、沈降し難くなる。さらに、油吸着シートの少なくとも一面が、連続気泡構造を有するポリオレフィン系樹脂発泡体の切り出し面で構成されているため、切り出し面ではスキン層などの膜が存在せず、油脂分の吸着性を高くできる。
According to the invention of
請求項２の発明によれば、連続気泡構造を有するポリオレフィン系樹脂発泡体の切り出し面が、グリース阻集器に貯留された油脂分と接するように配設されるため、連続気泡構造を有するポリオレフィン系樹脂発泡体の切り出し面で油脂分を良好に吸着することができる。
According to the invention of
請求項３の発明によれば、グリース阻集器に貯留される油脂分の量が多い場合などには、ポリオレフィン系樹脂発泡体の層の数を増やして、油吸着シートによる油脂分吸着量を増大させることができる。 According to the invention of claim 3, when the amount of oil and fat stored in the grease interceptor is large, the number of polyolefin resin foam layers is increased, and the amount of oil and fat adsorbed by the oil adsorbing sheet is increased. Can be made.
請求項４の発明によれば、ポリオレフィン系樹脂発泡体の層間に設けた繊維層によって、油吸着シートによる油脂分吸着量を増大させる効果が得られる。また、ポリオレフィン系樹脂発泡体の積層に比べ、積層を容易に行うことができる。 According to invention of Claim 4, the effect which increases the fat and oil adsorption amount by an oil adsorption sheet is acquired by the fiber layer provided between the layers of polyolefin resin foam. Further, the lamination can be easily performed as compared with the lamination of the polyolefin resin foam.
本発明のグリース阻集器用油吸着シートは、連続気泡構造を有するポリオレフィン系樹脂発泡体の層を有する。前記連続気泡構造を有するポリオレフィン系樹脂発泡体としては、微細セル構造のものが好ましい。具体的にはセル数（ＪＩＳ Ｋ６７６７：１９９９ 付属書Ａ（規定））が２０〜２５００個／２５ｍｍであり、より好ましくは、４０〜１０００個／２５ｍｍであり、更に好ましくは、５０〜５００個／２５ｍｍの連続気泡構造を有するものであれば、油脂分の吸着性が高く、かつ吸着した油脂分の保持性も高くなり、より好ましい。ポリオレフィン系樹脂発泡体としては、ポリエチレン樹脂発泡体、ポリプロピレン樹脂発泡体、ポリオレフィン樹脂発泡体等を挙げることができる。 The oil adsorbing sheet for a grease interceptor of the present invention has a polyolefin resin foam layer having an open cell structure. The polyolefin resin foam having the open cell structure is preferably a fine cell structure. Specifically, the number of cells (JIS K6767: 1999 Annex A (normative)) is 20 to 2500/25 mm, more preferably 40 to 1000/25 mm, and still more preferably 50 to 500 / If it has an open-cell structure of 25 mm, it is more preferable because it has a high oil and fat adsorptivity and a high retention of the adsorbed oil and fat. Examples of the polyolefin resin foam include a polyethylene resin foam, a polypropylene resin foam, and a polyolefin resin foam.
前記連続気泡構造を有するポリオレフィン系樹脂発泡体の層は、１層または２層以上からなる。前記連続気泡構造を有するポリオレフィン系樹脂発泡体の層を増やすことにより、油の吸着量を増やすことができる。前記ポリオレフィン系樹脂発泡体の各層の厚みは、０．３〜６ｍｍ程度が好ましく、積層を容易に行うためには、０．５〜２ｍｍ程度であることが、より好ましい。 The layer of the polyolefin resin foam having the open cell structure is composed of one layer or two or more layers. By increasing the layer of polyolefin resin foam having the open cell structure, the amount of oil adsorbed can be increased. The thickness of each layer of the polyolefin-based resin foam is preferably about 0.3 to 6 mm, and more preferably about 0.5 to 2 mm for easy lamination.
また、前記連続気泡構造を有するポリオレフィン系樹脂発泡体の層が２層以上の場合、前記連続気泡構造を有するポリオレフィン系樹脂発泡体の層間に、中間層として繊維層を設けてもよい。前記繊維層を中間層として設けることにより、油吸着シートによる油脂分吸着量を増大させる効果が得られ、かつポリオレフィン系樹脂発泡体の積層に比べ、積層を容易に行うことができる。前記繊維層としては、特に限定されるものではなく、例えば、天然繊維（植物系繊維や動物系繊維など）や化学繊維（合成繊維や半合成繊維など）を使用することができる。天然繊維としては、綿（コットン）やカポック、麻などが挙げられ、化学繊維としては、ポリプロピレン樹脂繊維などのポリオレフィン系樹脂樹繊維やポリスチレン樹脂繊維、ポリエチレンテレフタレート樹脂繊維などのポリエステル樹脂繊維が挙げられ、作業性などを考慮すると不織布などのシート状であることが好ましい。また、不織布としては、目付量３０〜５００ｇ／ｍ２が吸油性や積層の容易性などの点からより好ましい。 Moreover, when there are two or more layers of the polyolefin resin foam having the open cell structure, a fiber layer may be provided as an intermediate layer between the layers of the polyolefin resin foam having the open cell structure. By providing the fiber layer as an intermediate layer, the effect of increasing the amount of oil and fat adsorbed by the oil adsorbing sheet can be obtained, and the lamination can be performed more easily than the lamination of polyolefin resin foams. The fiber layer is not particularly limited, and for example, natural fibers (such as plant fibers and animal fibers) and chemical fibers (such as synthetic fibers and semi-synthetic fibers) can be used. Examples of natural fibers include cotton, kapok, and hemp. Examples of chemical fibers include polyolefin resin tree fibers such as polypropylene resin fibers, polyester resin fibers such as polystyrene resin fibers, and polyethylene terephthalate resin fibers. Considering workability and the like, a sheet shape such as a nonwoven fabric is preferable. Moreover, as a nonwoven fabric, the fabric weight of 30-500 g / m < 2 > is more preferable from points, such as oil absorption property and the ease of lamination | stacking.
なお、前記連続気泡構造を有するポリオレフィン系樹脂発泡体の層が２層以上（中間層として繊維層を有する場合を含む）の場合、各層の積層一体化は、ヒートシール、スポットラミネート、熱ラミネートなどの公知の接合方法で行うことができる。ヒートシールによる積層一体化は、重ね合せた各層をヒートシール装置等でヒートシールすることにより行われる。スポットラミネートによる積層一体化は、重ね合せた各層を超音波溶着機等で押し付け、全ての層を融着一体化することにより行われる。また、熱ラミネートによる積層一体化は、積層したい層の間に熱風等を当て表面を溶融させた後、ロール等で挟み込み、圧着することにより行われる。 In addition, when the layer of the polyolefin resin foam having the open cell structure is two or more layers (including the case where a fiber layer is included as an intermediate layer), each layer is laminated and integrated by heat sealing, spot lamination, thermal lamination, etc. It can carry out by the well-known joining method. Lamination integration by heat sealing is performed by heat-sealing each superimposed layer with a heat sealing device or the like. Lamination integration by spot laminating is performed by pressing the superposed layers with an ultrasonic welding machine or the like, and fusing all the layers together. Lamination integration by thermal lamination is performed by applying hot air or the like between the layers to be laminated to melt the surface, and then sandwiching and pressing with a roll or the like.
油吸着シートは、第２分離層６１に貯留された油脂分と接するように配設して使用されるため、油脂分と接する面から主に油脂分を吸着するが、油吸着シートの外周面からも油脂分を吸着する。そのため、積層一体化の方法は、油吸着シートの外周面の変形の少ないスポットラミネートや熱ラミネートを用いることが、より好ましい。ヒートシール装置等で積層一体化した場合、外周面が全てシールされるため、外周面からの油脂分の吸着性が低下してしまうおそれがある。 Since the oil adsorbing sheet is disposed and used so as to be in contact with the oil and fat stored in the second separation layer 61, the oil adsorbing sheet mainly adsorbs the oil and fat from the surface in contact with the oil and fat, but the outer peripheral surface of the oil adsorbing sheet It also absorbs fats and oils. Therefore, it is more preferable to use a spot laminate or a heat laminate in which the outer peripheral surface of the oil adsorbing sheet is less deformed as a method of lamination and integration. When laminated and integrated with a heat seal device or the like, since the entire outer peripheral surface is sealed, there is a possibility that the adsorptivity of the oil and fat from the outer peripheral surface may be reduced.
ヒートシールおよびスポットラミネートにて積層一体化する場合、接合部の間隔としては、５０〜１５０ｍｍであることが好ましく、より好ましくは７０〜１３０ｍｍであり、更に好ましくは８０〜１２０ｍｍである。接合部の間隔が５０ｍｍ未満の場合、接合によるポリオレフィン系樹脂発泡体の圧縮された領域が増え、油脂分の吸着性を十分に確保することができなくなる。接合部の間隔が１５０ｍｍを超えると、接合部と接合部の間において、油脂分と接する油吸着シートの面（特に接合部と接合部の間の中央部分）が、吸着した油脂分の重みで垂れ下がって油吸着シートの層間に隙間ができ、隙間のできた層間に空気層が生じるようになる。油吸着シートの層間に隙間ができて空気層を生じると、隣接するポリオレフィン系樹脂発泡体間の油脂分の移動が妨げられ、油脂分の吸着性を十分に確保することができなくなる。油吸着シートの接合は、各接合部の間隔が５０〜１５０ｍｍであれば、特に限定されることは無く、格子形状や六角形状等、任意に選択することができる。特に、スポットラミネートの場合、格子形状や六角形状等の中心部を接合してもよい。 When stacking and integrating by heat sealing and spot lamination, the interval between the joints is preferably 50 to 150 mm, more preferably 70 to 130 mm, and still more preferably 80 to 120 mm. When the space | interval of a junction part is less than 50 mm, the area | region where the polyolefin resin foam by compression increased, and it becomes impossible to fully ensure the adsorptivity of fats and oils. When the interval between the joints exceeds 150 mm, the surface of the oil adsorbing sheet that contacts the oil and fat (particularly the central part between the joint and the joint) between the joint and the joint is the weight of the adsorbed oil and fat. It hangs down and a gap is formed between the layers of the oil adsorbing sheet, and an air layer is generated between the gaps. If a gap is formed between the layers of the oil adsorbing sheet and an air layer is formed, the movement of the oil and fat between the adjacent polyolefin resin foams is hindered, and the adsorbability of the oil and fat cannot be sufficiently ensured. The joining of the oil adsorbing sheet is not particularly limited as long as the interval between the joining portions is 50 to 150 mm, and can be arbitrarily selected such as a lattice shape or a hexagonal shape. In particular, in the case of spot lamination, central portions such as a lattice shape or a hexagonal shape may be joined.
なお、熱ラミネートにて積層一体化する場合、連続気泡構造を有するポリオレフィン系樹脂発泡体の表面を熱風等により、溶融させた後に圧着させるため、油吸着シートの層間に隙間が生じるおそれが無い。 In addition, when laminating and integrating by thermal lamination, since the surface of the polyolefin resin foam having an open cell structure is melted with hot air or the like and then crimped, there is no possibility that a gap is generated between the layers of the oil adsorbing sheet.
前記油吸着シートの少なくとも一面は、前記連続気泡構造を有するポリオレフィン系樹脂発泡体の切り出し面で構成されている。前記連続気泡構造を有するポリオレフィン系樹脂発泡体は、製造時に緻密な膜（スキン層）が表面に形成されるため、表面の切り出し面（切断面)で構成することにより、緻密な膜が除去された状態となる。前記油吸着シートの少なくとも一面に緻密な膜が存在しないため、前記連続気泡構造を有するポリオレフィン系樹脂発泡体による油脂分の吸着性を高くできる。前記連続気泡構造を有するポリオレフィン系樹脂発泡体の切り出し面を油脂分と接するように配設することにより、油脂分の吸着性をより高くすることができる。 At least one surface of the oil adsorbing sheet is constituted by a cut surface of a polyolefin resin foam having the open cell structure. Since the polyolefin resin foam having the open cell structure has a dense film (skin layer) formed on the surface during production, the dense film is removed by constituting the cut surface (cut surface) of the surface. It becomes a state. Since there is no dense film on at least one surface of the oil adsorbing sheet, it is possible to increase the fat and oil adsorbability by the polyolefin resin foam having the open cell structure. By disposing the cut surface of the polyolefin-based resin foam having the open cell structure so as to be in contact with the oil and fat, the adsorptivity of the oil and fat can be further increased.
図１の（１−Ａ）に示す第１実施形態の油吸着シート１０Ａは、前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ａの単層（一層）で構成されている例である。前記油吸着シート１０Ａの両面１０１Ａ、１０２Ａを構成する前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ａの両面は、切り出し面で構成されている。 An oil adsorbing sheet 10A according to the first embodiment shown in (1-A) of FIG. 1 is an example configured by a single layer (one layer) of a polyolefin resin foam 11A having the open cell structure. Both surfaces of the polyolefin resin foam 11A having the open cell structure constituting both surfaces 101A and 102A of the oil adsorbing sheet 10A are cut out surfaces.
図１の（１−Ｂ）に示す第２実施形態の油吸着シート１０Ｂは、前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｂ、１２Ｂの２層が積層一体化されている例である。前記油吸着シート１０Ｂの両面１０１Ｂ、１０２Ｂを構成する前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｂ、１２Ｂの表面は、切り出し面で構成されている。 The oil adsorbing sheet 10B of the second embodiment shown in (1-B) of FIG. 1 is an example in which two layers of the polyolefin resin foams 11B and 12B having the open cell structure are laminated and integrated. The surfaces of the polyolefin resin foams 11B and 12B having the open cell structure constituting both surfaces 101B and 102B of the oil adsorbing sheet 10B are cut out surfaces.
なお、前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｂ、１２Ｂは、前記油吸着シート１０Ｂの両面１０１Ｂ、１０２Ｂを構成する一側の表面のみを切り出し面で構成してもよいが、前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｂ、１２Ｂの各々の両面を切り出し面で構成するのが好ましい。前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｂ、１２Ｂの各々の両面を切り出し面で構成することにより、油脂分が前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｂ、１２Ｂの間を容易に移動できるようになり、油脂分の吸着性を向上させることができる。 The polyolefin resin foams 11B and 12B having the open cell structure may be formed by cutting out only one surface constituting both surfaces 101B and 102B of the oil adsorbing sheet 10B. It is preferable that both sides of each of the polyolefin resin foams 11B and 12B having a structure are cut out. By forming both surfaces of the polyolefin resin foams 11B and 12B having the open cell structure as cut surfaces, the oil and fat easily move between the polyolefin resin foams 11B and 12B having the open cell structure. It becomes possible to improve the adsorptivity of fats and oils.
図１の（１−Ｃ）に示す第３実施形態の油吸着シート１０Ｃは、前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｃ、１２Ｃ、１３Ｃの３層が積層一体化されている例である。前記油吸着シート１０Ｃの両面１０１Ｃ、１０２Ｃを構成する前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｃ、１３Ｃの表面は、切り出し面で構成されている。 An oil adsorbing sheet 10C of the third embodiment shown in (1-C) of FIG. 1 is an example in which three layers of polyolefin resin foams 11C, 12C, and 13C having the open cell structure are laminated and integrated. . The surfaces of the polyolefin resin foams 11C and 13C having the open cell structure constituting both surfaces 101C and 102C of the oil adsorbing sheet 10C are formed by cut surfaces.
前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｃ、１２Ｃ、１３Ｃは、前記油吸着シート１０Ｃの両面１０１Ｃ、１０２Ｃを構成する前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｃ、１３Ｃの一側の表面のみを切り出し面で構成してもよいが、前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｃ、１２Ｃ、１３Ｃの各々の両面を切り出し面で構成するのが、油脂分の吸着性向上のために好ましい。 The polyolefin resin foams 11C, 12C, and 13C having the open cell structure are surfaces on one side of the polyolefin resin foams 11C and 13C having the open cell structure that constitute both surfaces 101C and 102C of the oil adsorption sheet 10C. Only the cut-out surface may be configured, but the polyolefin resin foams 11C, 12C, and 13C having the open-cell structure are configured by the cut-out surfaces in order to improve the fat and oil adsorptivity. preferable.
図１の（１−Ｄ）に示す第４実施形態の油吸着シート１０Ｄは、前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｄ、１２Ｄの間に中間層として前記繊維層２１Ｄを有する３層構造からなる。前記油吸着シート１０Ｄの両面１０１Ｄ、１０２Ｄを構成する前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｄ、１２Ｄの表面は、切り出し面で構成されている。 The oil adsorbing sheet 10D of the fourth embodiment shown in (1-D) of FIG. 1 has a three-layer structure having the fiber layer 21D as an intermediate layer between the polyolefin resin foams 11D and 12D having the open cell structure. Consists of. The surfaces of the polyolefin resin foams 11D and 12D having the open cell structure constituting both surfaces 101D and 102D of the oil adsorbing sheet 10D are formed by cut surfaces.
前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｄ、１２Ｄは、前記油吸着シート１０Ｄの両面１０１Ｄ、１０２Ｄを構成する一側の表面のみを切り出し面で構成してもよいが、前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｄ、１２Ｄの各々の両面を切り出し面で構成するのが、油脂分の吸着性向上のために好ましい。 The polyolefin resin foams 11D and 12D having the open cell structure may be formed by cutting out only one surface constituting both surfaces 101D and 102D of the oil adsorbing sheet 10D. It is preferable to form both surfaces of the polyolefin resin foams 11D and 12D having cut surfaces to improve the adsorption of oil and fat.
図１の（１−Ｅ）に示す第５実施形態の油吸着シート１０Ｅは、前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｅ、１２Ｅ、１３Ｅ、１４Ｅの４層が積層一体化されている例である。前記油吸着シート１０Ｅの両面１０１Ｅ、１０２Ｅを構成する前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｅ、１４Ｅの表面は、切り出し面で構成されている。 The oil adsorbing sheet 10E of the fifth embodiment shown in (1-E) of FIG. 1 is an example in which four layers of polyolefin resin foams 11E, 12E, 13E, and 14E having the open cell structure are laminated and integrated. It is. The surfaces of the polyolefin resin foams 11E and 14E having the open cell structure constituting the both surfaces 101E and 102E of the oil adsorbing sheet 10E are formed by cut surfaces.
前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｅ、１２Ｅ、１３Ｅ、１４Ｅは、前記油吸着シート１０Ｅの両面１０１Ｅ、１０２Ｅを構成する前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｅ、１４Ｅの一側の表面のみを切り出し面で構成してもよいが、前記連続気泡構造を有するポリオレフィン系樹脂発泡体１１Ｅ、１２Ｅ、１３Ｅ、１４Ｅの各々の両面を切り出し面で構成するのが、油脂分の吸着性向上のために好ましい。 The polyolefin resin foams 11E, 12E, 13E, and 14E having the open cell structure are one side of the polyolefin resin foams 11E and 14E having the open cell structure constituting the both surfaces 101E and 102E of the oil adsorption sheet 10E. Although only the surface of each may be constituted by a cut-out surface, it is possible to form both surfaces of the polyolefin resin foams 11E, 12E, 13E, and 14E having the open cell structure as cut-out surfaces, so that the adsorptivity of oils and fats It is preferable for improvement.
なお、本発明の油吸着シートは、前記の各実施形態の積層構造に限られず、連続気泡構造を有するポリオレフィン系樹脂発泡体の層を有し、油吸着シートの少なくとも一面が、前記連続気泡構造を有するポリオレフィン系樹脂発泡体の切り出し面で構成されている他の積層構造も含まれる。 The oil adsorbing sheet of the present invention is not limited to the laminated structure of each of the embodiments described above, but has a polyolefin resin foam layer having an open cell structure, and at least one surface of the oil adsorbing sheet has the open cell structure. The other laminated structure comprised by the cut surface of the polyolefin-type resin foam which has this is also contained.
・実施例１
図１の（１−Ａ）におけるポリオレフィン系樹脂発泡体１１Ａを、品名：ＦＯＬＥＣ−ＯＰＮ（ＰＰ発泡体）、イノアックコーポレーション社製、セル数：１９６個／２５ｍｍの連続気泡構造を有するポリプロピレン樹脂発泡体から１００ｍｍ角×厚み約１ｍｍに裁断して両面を切り出し面とした発泡体で構成し、図１の（１−Ａ）に示した１層（単層）構造の前記油吸着シート１０Ａを形成した。なお、ＦＯＬＥＣ−ＯＰＮの平均セル径は、１２８μｍであった。セル径の測定は、ＫＥＹＥＮＣＥ社製のデジタルマイクロスコープ（ＶＨＸ−５０００）を用いて任意の１０個のセル径を測定し、平均セル径を算出した。
Example 1
Polyolefin resin foam 11A in (1-A) of FIG. 1 is a polypropylene resin foam having an open cell structure of product name: FOLEC-OPN (PP foam), manufactured by Inoac Corporation, the number of cells: 196/25 mm. The oil adsorbing sheet 10A having a one-layer (single-layer) structure shown in FIG. 1 (1-A) was formed by cutting from 100 mm square × thickness of about 1 mm to make both sides cut out. . The average cell diameter of FOLEC-OPN was 128 μm. The cell diameter was measured by measuring any 10 cell diameters using a digital microscope (VHX-5000) manufactured by KEYENCE, and calculating the average cell diameter.
・実施例２
図１の（１−Ａ）におけるポリオレフィン系樹脂発泡体１１Ａを、品名：ＭＡＰＳ Ｋ００１（ＰＯ発泡体）、イノアックコーポレーション社製、セル数：１１３個／２５ｍｍの連続気泡構造を有するポリオレフィン樹脂発泡体から１００ｍｍ角×厚み約２ｍｍに裁断して両面を切り出し面とした発泡体で構成し、図１の（１−Ａ）に示した１層(単層)構造の前記油吸着シート１０Ａを形成した。なお、ＭＡＰＳ Ｋ００１の平均セル径は、２１８μｍであった。セル径の測定は、実施例１と同様に行い、平均セル径を算出した。
Example 2
The polyolefin resin foam 11A in (1-A) of FIG. 1 is made from a polyolefin resin foam having an open-cell structure of product name: MAPS K001 (PO foam), manufactured by Inoac Corporation, and having 113 cells / 25 mm. The oil adsorbing sheet 10A having a one-layer (single-layer) structure shown in FIG. 1 (1-A) was formed by forming a foam having a 100 mm square × about 2 mm thickness and having both sides cut out. The average cell diameter of MAPS K001 was 218 μm. The cell diameter was measured in the same manner as in Example 1, and the average cell diameter was calculated.
・実施例３
図１の（１−Ｂ）におけるポリオレフィン系樹脂発泡体１１Ｂ、１２Ｂを、実施例１で使用したＦＯＬＥＣ−ＯＰＮを１００ｍｍ角×厚み約１ｍｍに裁断して両面を切り出し面とした発泡体で構成し、スポットラミネート（超音波溶着）で積層一体化して、図１の（１−Ｂ）に示した２層構造の前記油吸着シート１０Ｂを形成した。スポットラミネートは、ポリオレフィン系樹脂発泡体１１Ｂ、１２Ｂを重ね合せ、四隅を超音波溶着機で溶着して作成した。以下、実施例４〜９および比較例２についても、実施例３と同様にスポットラミネートにより積層一体化した。
Example 3
The polyolefin resin foams 11B and 12B in (1-B) of FIG. 1 are made of a foam having the FOLEC-OPN used in Example 1 cut into a 100 mm square × about 1 mm thickness and both sides cut out. Then, the oil adsorbing sheet 10B having a two-layer structure shown in FIG. 1 (1-B) was formed by stacking and integrating by spot lamination (ultrasonic welding). The spot laminate was prepared by superposing polyolefin resin foams 11B and 12B and welding the four corners with an ultrasonic welding machine. Hereinafter, Examples 4 to 9 and Comparative Example 2 were laminated and integrated by spot lamination as in Example 3.
・実施例４
図１の（１−Ｃ）におけるポリオレフィン系樹脂発泡体１１Ｃ、１２Ｃ、１３Ｃを、実施例１で使用したＦＯＬＥＣ−ＯＰＮを１００ｍｍ角×厚み約１ｍｍに裁断して両面を切り出し面とした発泡体で構成し、図１の（１−Ｃ）に示した３層構造の前記油吸着シート１０Ｃを形成した。
Example 4
The polyolefin resin foams 11C, 12C, and 13C shown in (1-C) of FIG. 1 are cut with the FOLEC-OPN used in Example 1 into a 100 mm square × thickness of about 1 mm, with both sides cut out. The oil adsorbing sheet 10C having the three-layer structure shown in FIG. 1 (1-C) was formed.
・実施例５
図１の（１−Ｄ）におけるポリオレフィン系樹脂発泡体１１Ｄ、１２Ｄを、実施例１で使用したＦＯＬＥＣ−ＯＰＮを１００ｍｍ角×厚み約１ｍｍに裁断して両面を切り出し面とした発泡体で構成し、繊維層２１Ｄをポリプロピレン繊維不織布（ＰＰ繊維）、品名：バフター、イノアックコーポレーション社製、１００ｍｍ角×厚み約１ｍｍ、目付４０ｇ／ｍ２で構成し、図１の（１−Ｄ）に示した３層構造の前記油吸着シート１０Ｄを形成した。
Example 5
The polyolefin-based resin foams 11D and 12D in (1-D) of FIG. 1 are formed of a foam having both sides cut out by cutting the FOLEC-OPN used in Example 1 into a 100 mm square × about 1 mm thickness. The fiber layer 21D is composed of a polypropylene fiber nonwoven fabric (PP fiber), product name: buffer, manufactured by Inoac Corporation, 100 mm square × thickness of about 1 mm, basis weight 40 g / m 2 , and is shown in (1-D) of FIG. The oil adsorption sheet 10D having a layer structure was formed.
・実施例６
図１の（１−Ｄ）におけるポリオレフィン系樹脂発泡体１１Ｄ、１２Ｄを、実施例１で使用したＦＯＬＥＣ−ＯＰＮを１００ｍｍ角×約１ｍｍに裁断して両面を切り出し面とした発泡体で構成し、繊維層２１Ｄをポリエステル繊維不織布（エステル繊維）、品名：ボランス ４１０１Ｎ、東洋紡社製、１００ｍｍ角×厚み約１．３ｍｍ、目付１０１ｇ／ｍ２で構成し、図１の（１−Ｄ）に示した３層構造の前記油吸着シート１０Ｄを形成した。
Example 6
The polyolefin resin foams 11D and 12D in (1-D) of FIG. 1 are composed of a foam with the FOLEC-OPN used in Example 1 cut into a 100 mm square × about 1 mm and both sides cut out. The fiber layer 21D is composed of polyester fiber nonwoven fabric (ester fiber), product name: Borance 4101N, manufactured by Toyobo Co., Ltd., 100 mm square × thickness of about 1.3 mm, basis weight 101 g / m 2 , and is shown in (1-D) of FIG. The oil adsorption sheet 10D having a three-layer structure was formed.
・実施例７
図１の（１−Ｅ）におけるポリオレフィン系樹脂発泡体１１Ｅ、１２Ｅ、１３Ｅ、１４Ｅを、実施例１で使用したＦＯＬＥＣ−ＯＰＮを１００ｍｍ角×厚み約１ｍｍに裁断して両面を切り出し面とした発泡体で構成し、図１の（１−Ｅ）に示した４層構造の前記油吸着シート１０Ｅを形成した。
-Example 7
Foam with polyolefin resin foams 11E, 12E, 13E, and 14E shown in (1-E) of FIG. 1 cut into 100 mm square × about 1 mm thickness by cutting FOLEC-OPN used in Example 1 into both sides. The oil adsorbing sheet 10E having a four-layer structure shown in FIG. 1 (1-E) was formed.
・実施例８
図１の（１−Ｄ）におけるポリオレフィン系樹脂発泡体１１Ｄ、１２Ｄを、実施例１で使用したＦＯＬＥＣ−ＯＰＮを１００ｍｍ角×厚み約１ｍｍに裁断して両面を切り出し面とした発泡体で構成し、繊維層２１Ｄをポリプロピレン繊維不織布、品名：バフター、イノアックコーポレーション社製、厚み約２ｍｍ、目付８０ｇ／ｍ２で構成し、図１の（１−Ｄ）に示した３層構造の前記油吸着シート１０Ｄを形成した。
Example 8
The polyolefin-based resin foams 11D and 12D in (1-D) of FIG. 1 are formed of a foam having both sides cut out by cutting the FOLEC-OPN used in Example 1 into a 100 mm square × about 1 mm thickness. The fiber layer 21D is made of polypropylene fiber nonwoven fabric, product name: buffer, manufactured by Inoac Corporation, thickness of about 2 mm, basis weight of 80 g / m 2 , and the oil-absorbing sheet having a three-layer structure shown in FIG. 10D was formed.
・実施例９
図１の（１−Ｄ）におけるポリオレフィン系樹脂発泡体１１Ｄ、１２Ｄを、実施例１で使用したＦＯＬＥＣ−ＯＰＮを１００ｍｍ角×厚み約１ｍｍに裁断して両面を切り出し面とした発泡体で構成し、繊維層２１Ｄをポリエステル繊維不織布、品名：ボランス ４２１１Ｎ、東洋紡社製、１００ｍｍ角×厚み約２ｍｍ、目付２０７ｇ／ｍ２で構成し、図１の（１−Ｄ）に示した３層構造の前記油吸着シート１０Ｄを形成した。
Example 9
The polyolefin-based resin foams 11D and 12D in (1-D) of FIG. 1 are formed of a foam having both sides cut out by cutting the FOLEC-OPN used in Example 1 into a 100 mm square × about 1 mm thickness. The fiber layer 21D comprises a polyester fiber nonwoven fabric, product name: Borance 4211N, manufactured by Toyobo Co., Ltd., 100 mm square × thickness of about 2 mm, basis weight 207 g / m 2 , and has the three-layer structure shown in FIG. An oil adsorbing sheet 10D was formed.
・実施例１０
図１の（１−Ｄ）におけるポリオレフィン系樹脂発泡体１１Ｄ、１２Ｄを、実施例１で使用したＦＯＬＥＣ−ＯＰＮを１００ｍｍ角×厚み約１ｍｍに裁断して両面を切り出し面とした発泡体で構成し、繊維層２１Ｄを、ポリスチレン繊維不織布（ＰＳ繊維）、品名：Ｒ６４５７、ダイワボウポリテック社製、１００ｍｍ角×厚み約２ｍｍ、目付２５３ｇ／ｍ２で構成し、図１の（１−Ｄ）に示した３層構造の前記油吸着シート１０Ｄを形成した。
Example 10
The polyolefin-based resin foams 11D and 12D in (1-D) of FIG. 1 are formed of a foam having both sides cut out by cutting the FOLEC-OPN used in Example 1 into a 100 mm square × about 1 mm thickness. The fiber layer 21D is composed of a polystyrene fiber nonwoven fabric (PS fiber), product name: R6457, manufactured by Daiwabo Polytech Co., Ltd., 100 mm square × thickness of about 2 mm, basis weight 253 g / m 2 , and is shown in (1-D) of FIG. The oil adsorption sheet 10D having a three-layer structure was formed.
・実施例１１
図１の（１−Ｄ）におけるポリオレフィン系樹脂発泡体１１Ｄ、１２Ｄを、実施例１で使用したＦＯＬＥＣ−ＯＰＮを１００ｍｍ角×厚み約１ｍｍに裁断して両面を切り出し面とした発泡体で構成し、繊維層２１Ｄを、コットン繊維不織布（コットン繊維）、品名：コットエース Ｃ１５０Ｓ／Ａ０７、ユニチカ社製、１００ｍｍ角×厚み約１ｍｍ、目付１５０ｇ／ｍ２を２枚重ねて総厚み約２ｍｍ、総目付３００ｇ／ｍ２として構成し、図１の（１−Ｄ）に示した３層構造の前記油吸着シート１０Ｄを形成した。
Example 11
The polyolefin-based resin foams 11D and 12D in (1-D) of FIG. 1 are formed of a foam having both sides cut out by cutting the FOLEC-OPN used in Example 1 into a 100 mm square × about 1 mm thickness. , Fiber layer 21D, cotton fiber non-woven fabric (cotton fiber), product name: COT ACE C150S / A07, manufactured by Unitika, 100 mm square x thickness of about 1 mm, weight per piece of 150 g / m 2 are stacked, total thickness is about 2 mm, total weight The oil adsorbing sheet 10D having a three-layer structure shown in (1-D) of FIG. 1 was formed at 300 g / m 2 .
・比較例１
ポリプロピレン繊維不織布、品名：グリースクリーン、旭化成ホームプロダクツ社製、厚み約４ｍｍ、目付２４０ｇ／ｍ２の油吸着シートを使用した。
・比較例２
ポリエステル繊維不織布、品名：ボランス ４２１１Ｎ、東洋紡社製、１００ｍｍ角×厚み約２ｍｍ、目付２０７ｇ／ｍ２で構成し、２層構造の油吸着シートを形成した。
Comparative example 1
Polypropylene fiber nonwoven fabric, product name: Grease Clean, manufactured by Asahi Kasei Home Products Co., Ltd., an oil adsorption sheet having a thickness of about 4 mm and a basis weight of 240 g / m 2 was used.
Comparative example 2
Polyester fiber nonwoven fabric, product name: Borance 4211N, manufactured by Toyobo Co., Ltd., 100 mm square × about 2 mm thick, with a basis weight of 207 g / m 2 , formed a two-layer oil adsorption sheet.
各実施例及び各比較例について、油吸着量、油吸着率、油吸着量／ｍｍ、油保持率を次に示す方法で測定した。これらの測定はそれぞれ３回ずつ行い、その平均値を測定結果として表１に示す。
１００ｍｍ角×各厚みのサンプルについて、油吸着前の重量を測定した後、植物油に１０分間浸漬し、サンプルを取り出して１８０°の角度にクリップで固定し、３分後にクリップから外してサンプルの重量を測定した。重量測定後、前記と同じ方法にて更に７分間サンプルをクリップで固定した後（合計１０分後）、クリップから外してサンプルの重量を測定し、得られた測定値を用い、次の式で油吸着量、油吸着率、油吸着量／ｍｍ、油保持率を算出する。なお、［油吸着量／ｍｍ］は、サンプルの厚み１ｍｍ当たりの油吸着量である。
油吸着量（３分後）［ｍｇ］＝３分後サンプル重量−油吸着前のサンプル重量
油吸着率［％］＝（油吸着量(３分後)／油吸着前のサンプル重量）×１００
油吸着量／ｍｍ［ｍｇ］＝油吸着量（３分後）／サンプル総厚み
油保持率［％］＝［油吸着量（３分後）−｛油吸着量（３分後）−油吸着量（１０分後）｝］／油吸着量（３分後）×１００
About each Example and each comparative example, the oil adsorption amount, the oil adsorption rate, the oil adsorption amount / mm, and the oil retention rate were measured by the following method. Each of these measurements was performed three times, and the average value is shown in Table 1 as a measurement result.
After measuring the weight of each 100 mm square × thickness sample before oil adsorption, dipping it in vegetable oil for 10 minutes, taking out the sample, fixing it with a clip at an angle of 180 °, and removing it from the clip after 3 minutes, the weight of the sample Was measured. After measuring the weight, after fixing the sample with the clip for another 7 minutes in the same manner as above (after a total of 10 minutes), remove the sample from the clip and measure the weight of the sample. Oil adsorption amount, oil adsorption rate, oil adsorption amount / mm, and oil retention rate are calculated. [Oil adsorption amount / mm] is an oil adsorption amount per 1 mm of the thickness of the sample.
Oil adsorption amount (after 3 minutes) [mg] = sample weight after 3 minutes−sample weight before oil adsorption Oil adsorption rate [%] = (oil adsorption amount (after 3 minutes) / sample weight before oil adsorption) × 100
Oil adsorption amount / mm [mg] = Oil adsorption amount (after 3 minutes) / total sample thickness Oil retention [%] = [Oil adsorption amount (after 3 minutes)-{Oil adsorption amount (after 3 minutes) -Oil adsorption Amount (after 10 minutes)}] / oil adsorption amount (after 3 minutes) × 100
また、各実施例及び各比較例について、水（界面活性剤含まない）に対する沈降性と界面活性剤含有水に対する沈降性を次の方法で測定した。測定結果は表１に示す。 Moreover, about each Example and each comparative example, the sedimentation property with respect to water (a surfactant is not included) and the sedimentation property with respect to surfactant-containing water were measured by the following methods. The measurement results are shown in Table 1.
水に対する沈降性は、直径２０ｃｍ×高さ２０ｃｍの樹脂製容器に高さ約１５ｃｍまで水（イオン交換水）を収容し、容器内の水に１００ｍｍ角×各厚みのサンプルを浮かべて２４時間後の状態を確認した。評価は、浮いたままの場合［〇］、沈んだ場合［×］とした。沈降性の測定は、各３回ずつ行い、３回全て浮いたままの場合［〇］とし、１回でも沈んだ場合［×］と判定した。 Precipitation with respect to water is as follows: water (ion-exchanged water) is accommodated in a resin container 20 cm in diameter x 20 cm in height up to a height of about 15 cm, and a sample of 100 mm square x each thickness is floated on the water in the container. The state of was confirmed. The evaluation was [◯] when floating and [×] when sinking. Sedimentation was measured three times each, and it was determined as [◯] when all three times remained floating, and [×] when it sank even once.
界面活性剤含有水に対する沈降性は、界面活性剤（品名：台所用洗剤ジョイ、Ｐ＆Ｇ社製）を０．０１５％含有する界面活性剤含有水を、水と同様に容器に収容し、容器内の界面活性剤含有水に１００ｍｍ角×各厚みのサンプルを浮かべて２４時間後の状態を確認した。評価は、水に対する沈降性と同様に行った。 The settling property with respect to the surfactant-containing water is determined by storing the surfactant-containing water containing 0.015% of the surfactant (product name: kitchen detergent Joy, manufactured by P & G) in the same container as the water. A sample of 100 mm square × each thickness was floated on the surfactant-containing water, and the state after 24 hours was confirmed. The evaluation was performed in the same manner as the sedimentation property with respect to water.
実施例１は、連続気泡構造を有するポリプロピレン樹脂発泡体（厚み約１ｍｍ）の単層で構成されており、油吸着量が８７２３ｍｇ、油吸着率が２４６４％、油吸着量／ｍｍが８７２３ｍｇ、油保持率が９２％、水及び界面活性剤に対する沈降性が何れも「〇」であった。 Example 1 is composed of a single layer of a polypropylene resin foam (thickness of about 1 mm) having an open-cell structure, with an oil adsorption amount of 8723 mg, an oil adsorption rate of 2464%, an oil adsorption amount / mm of 8723 mg, and oil. The retention rate was 92%, and the settling properties with respect to water and surfactant were both “◯”.
実施例２は、連続気泡構造を有するポリオレフィン樹脂発泡体（厚み約２ｍｍ）の単層で構成されており、油吸着量が１４１２６ｍｇ、油吸着率が７１５％、油吸着量／ｍｍが７０６３ｍｇ、油保持率が８６％、水及び界面活性剤に対する沈降性が何れも「〇」であった。 Example 2 is composed of a single layer of polyolefin resin foam (thickness: about 2 mm) having an open-cell structure, with an oil adsorption amount of 14126 mg, an oil adsorption rate of 715%, an oil adsorption amount / mm of 7063 mg, and an oil The retention was 86%, and the settling properties with respect to water and surfactant were both “◯”.
実施例３は、連続気泡構造を有するポリプロピレン樹脂発泡体の２層（総厚み約２ｍｍ）で構成されており、単層からなる実施例１（総厚み約１ｍｍ）と比べて、油吸着量が略２倍になっている。油吸着率、油吸着量／ｍｍ、油保持率については、実施例１と略等しく、また、水及び界面活性剤に対する沈降性は何れも「〇」であった。 Example 3 is composed of two layers (total thickness of about 2 mm) of a polypropylene resin foam having an open-cell structure. Compared with Example 1 (total thickness of about 1 mm) consisting of a single layer, the amount of oil adsorbed is higher. It is almost doubled. The oil adsorption rate, the amount of oil adsorbed / mm, and the oil retention rate were substantially the same as in Example 1, and the sedimentation properties with respect to water and the surfactant were all “◯”.
実施例４は、連続気泡構造を有するポリプロピレン樹脂発泡体の３層（総厚み約３ｍｍ）で構成されており、単層からなる実施例１（総厚み約１ｍｍ）と比べて、油吸着量が略３倍になっている。油吸着率、油吸着量／ｍｍ、油保持率については、実施例１と略等しく、また、水及び界面活性剤に対する沈降性は何れも「〇」であった。 Example 4 is composed of three layers (total thickness of about 3 mm) of polypropylene resin foam having an open-cell structure, and the amount of oil adsorbed is higher than that of Example 1 (total thickness of about 1 mm) consisting of a single layer. It is almost tripled. The oil adsorption rate, the amount of oil adsorbed / mm, and the oil retention rate were substantially the same as in Example 1, and the sedimentation properties with respect to water and the surfactant were all “◯”.
実施例５は、実施例４における中間層の連続気泡構造を有するポリプロピレン樹脂発泡体に代えてポリプロピレン繊維不織布とした構成からなり、油吸着量、油吸着率、油吸着量／ｍｍ、油保持率の何れも実施例４と比べて幾分低い値であった。水及び界面活性剤に対する沈降性は何れも「〇」であった。 Example 5 has a configuration in which a polypropylene fiber nonwoven fabric is used in place of the polypropylene resin foam having an open-cell structure of the intermediate layer in Example 4, and includes an oil adsorption amount, an oil adsorption rate, an oil adsorption amount / mm, and an oil retention rate. All of these values were somewhat lower than those in Example 4. The sedimentation properties with respect to water and surfactant were both “◯”.
実施例６は、実施例５における中間層のポリプロピレン繊維不織布に代えてポリエステル繊維不織布とした構成からなり、油吸着量、油吸着量／ｍｍ、油保持率は、実施例５と略等しかった。実施例６の油吸着率は、実施例５の繊維層を構成するポリプロピレン繊維不織布（目付４０ｇ／ｍ２）よりも実施例６の繊維層を構成するポリエステル繊維不織布（目付１０１ｇ／ｍ２）の方が目付量が多いため、実施例５よりも小さい値であった。水及び界面活性剤に対する沈降性は何れも「〇」であった。 Example 6 was composed of a polyester fiber nonwoven fabric in place of the intermediate layer polypropylene fiber nonwoven fabric in Example 5, and the oil adsorption amount, the oil adsorption amount / mm, and the oil retention rate were substantially equal to those of Example 5. Oil adsorption rate of Example 6, the polypropylene fiber nonwoven fabric constituting the fiber layer of Example 5 Polyester fiber nonwoven fabric constituting the fiber layer of Example 6 than (basis weight 40 g / m 2) (basis weight 101g / m 2) Since the basis weight was larger, the value was smaller than that in Example 5. The sedimentation properties with respect to water and surfactant were both “◯”.
実施例７は、連続気泡構造を有するポリプロピレン樹脂発泡体の４層（総厚み約４ｍｍ）で構成されており、単層からなる実施例１（総厚み約１ｍｍ）と比べて、油吸着量が略４倍になっている。油吸着率、油吸着量／ｍｍ、油保持率については、実施例１と略等しく、また、水及び界面活性剤に対する沈降性は何れも「〇」であった。 Example 7 is composed of four layers (total thickness of about 4 mm) of polypropylene resin foam having an open-cell structure, and the amount of oil adsorbed is higher than that of Example 1 (total thickness of about 1 mm) consisting of a single layer. It is about 4 times. The oil adsorption rate, the amount of oil adsorbed / mm, and the oil retention rate were substantially the same as in Example 1, and the sedimentation properties with respect to water and the surfactant were all “◯”.
実施例８は、実施例７における中間層のポリプロピレン樹脂発泡体の２層に代えて厚み約２ｍｍのポリプロピレン繊維不織布で構成したものであり、油吸着量、油吸着率、油吸着量／ｍｍ、油保持率の何れも実施例７と比べて幾分低い値であった。水及び界面活性剤に対する沈降性は何れも「〇」であった。 Example 8 is composed of a polypropylene fiber nonwoven fabric having a thickness of about 2 mm instead of two layers of the polypropylene resin foam of the intermediate layer in Example 7, and the oil adsorption amount, the oil adsorption rate, the oil adsorption amount / mm, All of the oil retention rates were somewhat lower than in Example 7. The sedimentation properties with respect to water and surfactant were both “◯”.
実施例９は、実施例８における中間層の厚み約２ｍｍのポリプロピレン繊維不織布に代えて厚み約２ｍｍのポリエステル繊維不織布で構成したものであり、油吸着量、油吸着量／ｍｍ、油保持率は、実施例８と比べて僅かに低いあるいは殆ど等しい値であった。実施例９の油吸着率は、実施例８の繊維層を構成するポリプロピレン繊維不織布（目付８０ｇ／ｍ２）よりも実施例９の繊維層を構成するポリエステル繊維不織布（目付２０７ｇ／ｍ２）の方が目付量が多いため、実施例８よりも小さい値であった。水及び界面活性剤に対する沈降性は何れも「〇」であった。 Example 9 is composed of a polyester fiber nonwoven fabric having a thickness of about 2 mm instead of the polypropylene fiber nonwoven fabric having an intermediate layer thickness of about 2 mm in Example 8. The oil adsorption amount, the oil adsorption amount / mm, and the oil retention rate are As compared with Example 8, the value was slightly lower or almost equal. Oil adsorption rate of Example 9, the polypropylene fiber nonwoven fabric constituting the fiber layer of Example 8 (basis weight 80 g / m 2) Polyester fiber nonwoven fabric constituting the fiber layer of Example 9 than (basis weight 207 g / m 2) Since the basis weight was larger, the value was smaller than that in Example 8. The sedimentation properties with respect to water and surfactant were both “◯”.
実施例１０は、実施例８における中間層の厚み約２ｍｍのポリプロピレン繊維不織布に代えて厚み約２ｍｍのポリスチレン繊維不織布で構成したものであり、油吸着量、油吸着量／ｍｍ、油保持率は、実施例８と比べて僅かに低い値であった。実施例１０の油吸着率は、実施例８の繊維層を構成するポリプロピレン繊維不織布（目付８０ｇ／ｍ２）よりも実施例１０の繊維層を構成するポリスチレン繊維不織布（目付２５３ｇ／ｍ２）の方が目付量が多いため、実施例８よりも小さい値であった。水及び界面活性剤に対する沈降性は何れも「〇」であった。 Example 10 is composed of a polystyrene fiber nonwoven fabric having a thickness of about 2 mm instead of the polypropylene fiber nonwoven fabric having an intermediate layer thickness of about 2 mm in Example 8, and the oil adsorption amount, the oil adsorption amount / mm, and the oil retention rate are The value was slightly lower than that of Example 8. The oil adsorption rate of Example 10 is higher than that of the polypropylene fiber nonwoven fabric (unit weight 253 g / m 2 ) constituting the fiber layer of Example 10 than the polypropylene fiber nonwoven fabric (unit weight 80 g / m 2 ) constituting the fiber layer of Example 8. Since the basis weight was larger, the value was smaller than that in Example 8. The sedimentation properties with respect to water and surfactant were both “◯”.
実施例１１は、実施例８における中間層の厚み約２ｍｍのポリプロピレン繊維不織布に代えて厚み約２ｍｍのコットン繊維不織布（厚み約１ｍｍのコットン繊維不織布の２枚重ね）で構成したものであり、油吸着量、油吸着量／ｍｍ、油保持率は、実施例８と比べて僅かに低い値であった。実施例１１の油吸着率は、実施例８の繊維層を構成するポリプロピレン繊維不織布（目付８０ｇ／ｍ２）よりも実施例１１の繊維層を構成するコットン繊維不織布（総目付３００ｇ／ｍ２）の方が目付量が多いため、実施例８よりも小さい値であった。水及び界面活性剤に対する沈降性は何れも「〇」であった。 Example 11 is composed of a cotton fiber nonwoven fabric having a thickness of about 2 mm (two overlapping cotton fiber nonwoven fabrics having a thickness of about 1 mm) instead of the polypropylene fiber nonwoven fabric having a thickness of about 2 mm as an intermediate layer in Example 8. The adsorption amount, oil adsorption amount / mm, and oil retention rate were slightly lower than those in Example 8. The oil adsorption rate of Example 11 is a cotton fiber nonwoven fabric (total basis weight 300 g / m 2 ) constituting the fiber layer of Example 11 rather than the polypropylene fiber nonwoven fabric (weight basis 80 g / m 2 ) constituting the fiber layer of Example 8. Since the weight per unit area was larger, the value was smaller than that in Example 8. The sedimentation properties with respect to water and surfactant were both “◯”.
比較例１は、厚み約４ｍｍのポリプロピレン繊維不織布で構成されており、総厚みが４ｍｍの実施例７〜１１と比べて、油吸着量、油吸着率、油吸着量／ｍｍ、油保持率が何れも低く、かつ界面活性剤に対する沈降性は３回全て沈降したため「×」であった。 Comparative Example 1 is composed of a polypropylene fiber nonwoven fabric having a thickness of about 4 mm, and has an oil adsorption amount, an oil adsorption rate, an oil adsorption amount / mm, and an oil retention rate as compared with Examples 7 to 11 having a total thickness of 4 mm. All were low, and the sedimentation property with respect to the surfactant was “x” because it settled all three times.
比較例２は、厚み約２ｍｍのポリエステル繊維不織布の２層で構成されており、総厚みが約４ｍｍの実施例７〜１１と比べて、油吸着量、油吸着率、油吸着量／ｍｍ、油保持率が何れも低く、かつ界面活性剤に対する沈降性は３回全て沈降したため「×」であった。 Comparative Example 2 is composed of two layers of a polyester fiber nonwoven fabric having a thickness of about 2 mm. Compared with Examples 7 to 11 having a total thickness of about 4 mm, the oil adsorption amount, the oil adsorption rate, the oil adsorption amount / mm, The oil retention was all low, and the sedimentation property to the surfactant was “x” because it settled all three times.
このように、本発明の油吸着シートは、油脂分の吸着性および保持性が高く、かつ界面活性剤を含む排水に対しても沈降し難いものである。 As described above, the oil adsorbing sheet of the present invention has high adsorbability and retention of fats and oils, and is difficult to settle against waste water containing a surfactant.
１０Ａ〜１０Ｅ 油吸着シート
１１Ａ〜１１Ｅ、１２Ｂ〜１２Ｅ、１３Ｃ、１３Ｅ、１４Ｅ 連続気泡構造を有するポリオレフィン系樹脂発泡体
２１Ｄ 繊維層
１０１Ａ〜１０１Ｅ、１０２Ａ〜１０２Ｅ 油吸着シートの両面
10A to 10E Oil adsorption sheet 11A to 11E, 12B to 12E, 13C, 13E, 14E Polyolefin resin foam having an open cell structure 21D Fiber layer 101A to 101E, 102A to 102E Both sides of oil adsorption sheet
Claims (4)
前記油吸着シートは、連続気泡構造を有するポリオレフィン系樹脂発泡体の層を有し、前記油吸着シートの少なくとも一面が、前記連続気泡構造を有するポリオレフィン系樹脂発泡体の切り出し面で構成されていることを特徴とするグリース阻集器用油吸着シート。 In oil adsorption sheet for grease interceptor,
The oil adsorbing sheet has a layer of polyolefin resin foam having an open cell structure, and at least one surface of the oil adsorbing sheet is constituted by a cut surface of the polyolefin resin foam having the open cell structure. An oil adsorbing sheet for a grease interceptor characterized by that.
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|---|---|---|---|---|
| JPS4948578A (en) * | 1972-09-13 | 1974-05-10 | ||
| JPS4948576A (en) * | 1972-09-12 | 1974-05-10 | ||
| JPH08192152A (en) * | 1995-01-18 | 1996-07-30 | Nippon Solid Co Ltd | Oil adsorbing material |
| JP2002346380A (en) * | 2001-05-24 | 2002-12-03 | Asahi Kasei Corp | Oil adsorption sheet for grease interceptor |
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|---|---|---|---|---|
| JPS4948576A (en) * | 1972-09-12 | 1974-05-10 | ||
| JPS4948578A (en) * | 1972-09-13 | 1974-05-10 | ||
| JPH08192152A (en) * | 1995-01-18 | 1996-07-30 | Nippon Solid Co Ltd | Oil adsorbing material |
| JP2002346380A (en) * | 2001-05-24 | 2002-12-03 | Asahi Kasei Corp | Oil adsorption sheet for grease interceptor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102043371B1 (en) * | 2018-10-25 | 2019-11-12 | 대한민국 | Three-dimensional oil adsorbent |
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| JP6716392B2 (en) | 2020-07-01 |
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