JP7168362B2 - coffee filter paper - Google Patents
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- JP7168362B2 JP7168362B2 JP2018131988A JP2018131988A JP7168362B2 JP 7168362 B2 JP7168362 B2 JP 7168362B2 JP 2018131988 A JP2018131988 A JP 2018131988A JP 2018131988 A JP2018131988 A JP 2018131988A JP 7168362 B2 JP7168362 B2 JP 7168362B2
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- coffee filter
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/02—Coffee-making machines with removable extraction cups, to be placed on top of drinking-vessels i.e. coffee-makers with removable brewing vessels, to be placed on top of beverage containers, into which hot water is poured, e.g. cafe filter
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/06—Filters or strainers for coffee or tea makers ; Holders therefor
- A47J31/08—Paper filter inlays therefor to be disposed after use
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F5/00—Coffee; Coffee substitutes; Preparations thereof
- A23F5/24—Extraction of coffee; Coffee extracts; Making instant coffee
Description
本発明は、機械抽出用のコーヒー濾紙に関する。 The present invention relates to coffee filter paper for mechanical extraction.
カップ式で１杯ずつ豆を挽くタイプのコーヒー抽出機械が、コンビニエンスストア、レストラン、自動販売機等で利用されている。
コーヒー抽出機械ではロール状に巻き取られたコーヒー濾紙が使用されている。コーヒー抽出機械では、ロールから引き出されたコーヒー濾紙が抽出機（ブリュワー）に挟まれた状態でコーヒー豆粉末とお湯が注がれてコーヒー飲料が抽出され、抽出されたコーヒー飲料がコーヒー濾紙で濾過されてカップに注がれる。抽出後のコーヒー濾紙は、抽出後のコーヒー豆粉末を載せたまま紙送りローラーで送られて排出される。
2. Description of the Related Art A cup-type coffee brewing machine that grinds beans one by one is used in convenience stores, restaurants, vending machines, and the like.
Coffee filter paper wound in a roll is used in coffee brewing machines. In the coffee extraction machine, the coffee beverage is extracted by pouring coffee bean powder and hot water into the coffee filter paper pulled out from the roll and sandwiched between the brewers, and the extracted coffee beverage is filtered through the coffee filter paper. and poured into a cup. The coffee filter paper after extraction is fed by a paper feed roller and discharged with the coffee bean powder after extraction placed thereon.
機械抽出用のコーヒー濾紙には、コーヒー飲料抽出後の湿潤状態における断紙や破れ等によるトラブルが起こりにくいことが要求されており、本発明者らは、特許文献１（本願出願時において未公開）において、十分な縦方向の乾燥引張強さと湿潤引張強さ、優れた吸水特性を有するコーヒー濾紙を提案している。 Coffee filter paper for mechanical extraction is required to be less likely to cause troubles such as paper breakage and tearing in a wet state after coffee beverage extraction. ) proposed a coffee filter paper with sufficient longitudinal dry and wet tensile strength and excellent water absorption properties.
近年、コンビニエンスストアでは、コーヒー抽出機械で抽出するセルフコーヒーが集客手段として注目されている。このような店頭でのセルフコーヒーは、注文が集中する通勤時間帯等に速やかにコーヒー飲料を提供するため、豆を挽いてからカップに注ぐまでの総抽出時間が短いことが要求され、コーヒー濾紙には、高い濾水性が要求される。
しかし、コーヒー濾紙の濾水性を高くすると、気孔径が大きくなりやすく、気孔径が大きなコーヒー濾紙でコーヒー飲料を抽出した場合、コーヒー飲料に豆の微粒子（以下、微粉ともいう）が多量に含まれ、雑味が強くなるという問題がある。逆に、気孔径が小さすぎると、総抽出時間が長くなり、また、微粉がコーヒー飲料にほとんど含まれず、風味が弱くなる場合がある。
In recent years, in convenience stores, self-made coffee brewed by coffee brewing machines has attracted attention as a means of attracting customers. In order to quickly provide coffee beverages during commuting hours when orders are concentrated, such self-service coffee at stores is required to have a short total extraction time from grinding the beans to pouring them into the cup. requires high drainage.
However, when the freeness of the coffee filter paper is increased, the pore size tends to increase, and when the coffee beverage is extracted with a coffee filter paper with a large pore size, the coffee beverage contains a large amount of fine bean particles (hereinafter also referred to as fine powder). , there is a problem that the miscellaneous taste becomes strong. Conversely, if the pore size is too small, the total extraction time will be long, and the coffee beverage may contain very little fines, resulting in a weak flavor.
本発明は、本格的な風味を有し、雑味の少ないコーヒー飲料を抽出することのできる機械抽出用のコーヒー濾紙を提供することを課題とする。 SUMMARY OF THE INVENTION An object of the present invention is to provide a coffee filter paper for mechanical extraction, which is capable of extracting a coffee beverage having authentic flavor and less unpleasant taste.
本発明の課題を解決するための手段は、以下のとおりである。
１．１５μｍ以上の気孔径割合が４０％以上、かつ、３０μｍ以上の気孔径割合が２０％以下であることを特徴とするコーヒー濾紙。
２．前記１５μｍ以上の気孔径割合が４５％以上であることを特徴とする１．に記載のコーヒー濾紙。
３．前記３０μｍ以上の気孔径割合が１７％以下であることを特徴とする１．または２．に記載のコーヒー濾紙。
４．製紙用繊維中の木材パルプの含有量が３０質量％以下であることを特徴とする１．～３．のいずれかに記載のコーヒー濾紙。
Means for solving the problems of the present invention are as follows.
A coffee filter paper characterized by having a pore diameter ratio of 1.15 μm or more of 40% or more and a pore diameter ratio of 30 μm or more of 20% or less.
2. 1. The pore size ratio of 15 μm or more is 45% or more. The coffee filter paper described in .
3. 1. The pore size ratio of 30 μm or more is 17% or less. or 2. The coffee filter paper described in .
4. 1. The papermaking fiber has a wood pulp content of 30% by mass or less. ~3. Coffee filter paper according to any one of.
本発明のコーヒー濾紙は、特定の気孔径分布を満足することにより、本格的な風味を有し、雑味の少ないコーヒー飲料を、抽出することができる。 By satisfying a specific pore size distribution, the coffee filter paper of the present invention can extract a coffee beverage having a full-fledged flavor and less unpleasant taste.
本発明のコーヒー濾紙は、１５μｍ以上の気孔径割合が４０％以上、かつ、３０μｍ以上の気孔径割合が２０％以下であることを特徴とする。なお、機械抽出用である本発明のコーヒー濾紙は、ハンドドリップ用のコーヒーフィルタとは、濾水性、耐水性、強度等の物性が大きく異なる別物品である。 The coffee filter paper of the present invention is characterized by having a pore diameter ratio of 15 μm or more of 40% or more and a pore diameter ratio of 30 μm or more of 20% or less. Note that the coffee filter paper of the present invention for mechanical extraction is a different product from the coffee filter for hand dripping, which is greatly different in physical properties such as freeness, water resistance, and strength.
（紙基材）
本発明のコーヒー濾紙に用いられる紙基材を製造するための製紙用繊維の種類は特に限定されず、針葉樹パルプ、広葉樹パルプなどの木材パルプ、亜麻、ケナフ、楮、みつまたなどの靭皮繊維、バガス、竹、エスパルトなどの硬質繊維、コットンパルプなどの種子毛繊維、マニラ麻パルプ、サイザル麻パルプなどの葉脈繊維といった非木材パルプ、合成繊維（ポリプロピレン繊維、レーヨン繊維、ポリエチレンテレフタレート繊維）などの１種または２種以上を用いることができる。また、パルプとしては、クラフト蒸解法、酸性・中性・アルカリ亜硫酸塩蒸解法、ソーダ塩蒸解法等による化学パルプ、グランドパルプ、ケミグランドパルプ、サーモメカニカルパルプ等を使用できる。
(Paper substrate)
The types of papermaking fibers for producing the paper substrate used in the coffee filter paper of the present invention are not particularly limited, and include wood pulp such as softwood pulp and hardwood pulp, bast fiber such as flax, kenaf, mulberry, and mitsumata. Hard fibers such as bagasse, bamboo, and esparto, seed hair fibers such as cotton pulp, non-wood pulp such as leaf vein fibers such as manila hemp pulp and sisal hemp pulp, synthetic fibers (polypropylene fiber, rayon fiber, polyethylene terephthalate fiber), etc. Or 2 or more types can be used. As the pulp, chemical pulp, ground pulp, chemi-grand pulp, thermomechanical pulp, etc. prepared by kraft cooking method, acid/neutral/alkaline sulfite cooking method, soda salt cooking method or the like can be used.
上記したように、本発明において使用する製紙用繊維は特に限定されないが、製紙用繊維中の木材パルプの含有量を３０質量％以下とすることにより、本発明の気孔径分布を満足する紙基材を抄紙しやすくなる。目的とする紙基材の製造しやすさの点からは、木材パルプの含有量は２０質量％以下であることがより好ましく、１０質量％以下であることがさらに好ましく、木材パルプを含まないことが最も好ましい。また、木材パルプ以外のパルプとして麻パルプを用いることにより、本発明の気孔径分布を満足する紙基材を抄紙しやすくなる。 As described above, the papermaking fibers used in the present invention are not particularly limited. Makes it easier to make paper. From the viewpoint of ease of production of the target paper base material, the content of wood pulp is more preferably 20% by mass or less, more preferably 10% by mass or less, and does not contain wood pulp. is most preferred. In addition, by using hemp pulp as a pulp other than wood pulp, it becomes easier to produce a paper substrate that satisfies the pore size distribution of the present invention.
（添加剤）
本発明のコーヒー濾紙は、本発明の気孔径分布を満足する限り、食品向け用紙の自主基準、ＦＤＡ認可などへの問題がなければ、必要に応じて各種添加剤を使用することが可能である。添加剤としては、コーヒー濾紙に要求される湿潤強度、サイズ性、吸水特性を満足するために、湿潤紙力増強剤、乾燥紙力増強剤、サイズ剤を含むことが好ましい。
(Additive)
As long as the coffee filter paper of the present invention satisfies the pore size distribution of the present invention, it is possible to use various additives as necessary if there is no problem with voluntary standards for food paper, FDA approval, etc. . Additives preferably include wet strength agents, dry strength agents, and sizing agents in order to satisfy wet strength, sizing properties, and water absorption properties required for coffee filter paper.
（湿潤紙力増強剤）
本発明において、湿潤紙力増強剤は、特に限定されるものではなく、ジアルデヒドグアーガム、グリオキサール変性ポリアクリルアミド（アクリルアミド－ジアリルジメチルアンモニウムクロライド共重合物）、ポリアミドエピクロロヒドリン、ポリアミドポリアミンエピクロロヒドリン、ポリアミンエピクロロヒドリン、ポリエチレンイミンなどが使用できる。
(Wet strength agent)
In the present invention, the wet strength agent is not particularly limited, and includes dialdehyde guar gum, glyoxal-modified polyacrylamide (acrylamide-diallyldimethylammonium chloride copolymer), polyamide epichlorohydrin, polyamide polyamine epichlorohydrin. Phosphorus, polyamine epichlorohydrin, polyethylenimine, etc. can be used.
（乾燥紙力増強剤）
本発明において、乾燥紙力増強剤は、特に限定されるものではなく、カルボキシメチルセルロース（ＣＭＣ）、カルボキシメチルグアーガム、ポリアクリルアミド、グリオキサール変性ポリアクリルアミド（アクリルアミド－ジアリルジメチルアンモニウムクロライド共重合物）、ヒドロキシプロピルグアーガムなどが使用できる。
(Dry paper strength agent)
In the present invention, the dry paper strength agent is not particularly limited, and carboxymethylcellulose (CMC), carboxymethylguar gum, polyacrylamide, glyoxal-modified polyacrylamide (acrylamide-diallyldimethylammonium chloride copolymer), hydroxypropyl Guar gum and the like can be used.
（サイズ剤）
本発明において、サイズ剤は、特に限定されるものではなく、アルキルケテンダイマー（ＡＫＤ）、スチレン・アクリルニトリル共重合体、アニオン性ポリウレタン、スチレン・無水マレイン酸共重合体などが使用できる。
(Sizing agent)
In the present invention, the sizing agent is not particularly limited, and alkylketene dimers (AKD), styrene/acrylonitrile copolymers, anionic polyurethanes, styrene/maleic anhydride copolymers, and the like can be used.
（製造方法）
本発明のコーヒー濾紙の製造方法は、特に限定されるものではないが、例えば、製紙用繊維と、湿潤紙力増強剤、乾燥紙力増強剤、他の添加剤等を含む紙料から紙基材を抄紙し、紙基材にサイズ剤等を含む塗工液を塗工する方法が挙げられる。
紙基材の抄紙方法は、特に限定されるものではなく、トップワイヤー等を含む長網抄紙機、オントップフォーマー、ギャップフォーマー、円網抄紙機、短網抄紙機、傾斜短網抄紙機等を用いて行うことができる。また、乾燥工程は、多筒式シリンダードライヤー、ヤンキードライヤー、熱風ドライヤーなど適宜選定することができる。塗工液の塗工方法は、特に限定されるものではなく、サイズプレスやニップコート等の方式によって塗工することができる。
(Production method)
The method for producing the coffee filter paper of the present invention is not particularly limited. A method in which the material is made into paper and a coating liquid containing a sizing agent and the like is applied to the paper base material.
The paper-making method of the paper substrate is not particularly limited, and may be a fourdrinier paper machine including a top wire, an on-top former, a gap former, a cylinder paper machine, a short-mesh paper machine, or an inclined short-mesh paper machine. etc. can be used. Moreover, the drying process can be appropriately selected from a multi-cylinder cylinder dryer, a Yankee dryer, a hot air dryer, or the like. The coating method of the coating liquid is not particularly limited, and can be applied by a method such as size press or nip coating.
（気孔径割合）
本発明のコーヒー濾紙は、１５μｍ以上の気孔径割合が４０％以上であることにより、短い抽出時間で、本格的な風味を有するコーヒー飲料を抽出することができる。１５μｍ以上の気孔径割合は、４５％以上であることが好ましく、５０％以上であることがより好ましく、６０％以上であることがさらに好ましい。
一方、本発明のコーヒー濾紙は、３０μｍ以上の気孔径割合が２０％以下であることにより、雑味の少ないコーヒー飲料を抽出することができる。３０μｍ以上の気孔径割合は、１７％以下であることが好ましく、１５％以下であることがより好ましい。
なお、本発明において、気孔径割合は、細孔直径分布測定装置パームポロメーター（米国ＰＭＩ社 型番ＣＦＰ－１２００Ａ）を用い、測定液（米国ＰＭＩ社 ＳＩＬＷＩＣＫ）に浸したサンプルに空気圧を加えていき、湿潤状態の空気流量と乾燥状態の空気流量の比から気孔径分布を求め、この気孔径分布から算出した値である。
(Pore diameter ratio)
Since the coffee filter paper of the present invention has a pore size ratio of 15 μm or more of 40% or more, it is possible to extract a coffee beverage having a full-fledged flavor in a short extraction time. The pore diameter ratio of 15 μm or more is preferably 45% or more, more preferably 50% or more, and even more preferably 60% or more.
On the other hand, since the coffee filter paper of the present invention has a pore size ratio of 30 μm or more of 20% or less, it is possible to extract a coffee beverage with little unpleasant taste. The pore diameter ratio of 30 μm or more is preferably 17% or less, more preferably 15% or less.
In the present invention, the pore diameter ratio is determined by applying air pressure to a sample immersed in a measurement solution (SILWICK, PMI, USA) using a pore diameter distribution measuring device perm porometer (model number CFP-1200A, PMI, USA). , is a value calculated from the pore size distribution obtained from the ratio of the air flow rate in the wet state to the air flow rate in the dry state.
（坪量）
本発明のコーヒー濾紙の坪量は、１８ｇ／ｍ２以上３０ｇ／ｍ２以下が好ましい。坪量が１８ｇ／ｍ２より小さいと紙力が低下して断紙、破れが起こりやすくなる。坪量が３０ｇ／ｍ２より大きいと濾水性が低下して総抽出時間が長くなる場合がある。また、１５μｍ以上の気孔径割合が小さくなり、コーヒー飲料の風味が弱くなる場合がある。坪量は、２０ｇ／ｍ２以上２５ｇ／ｍ２以下であることがより好ましい
（厚さ）
コーヒー濾紙の厚さは、５５μｍ以上９０μｍ以下が好ましい。コーヒー濾紙の厚さが５５μｍより薄いと３０μｍ以上の気孔径割合が大きくなり、コーヒー飲料に雑味が生じる場合がある。コーヒー濾紙の厚さが９０μｍより厚いと単位長さ当たりのロール径が大きくなるため、抽出機械へのコーヒー濾紙の補充頻度が高くなる。コーヒー濾紙の厚さは、６０μｍ以上８０μｍ以下であることがより好ましい。
(basis weight)
The basis weight of the coffee filter paper of the present invention is preferably 18 g/m 2 or more and 30 g/m 2 or less. If the basis weight is less than 18 g/m 2 , the strength of the paper is reduced, and paper breakage and tearing tend to occur. If the basis weight is more than 30 g/m 2 , the freeness may decrease and the total extraction time may become longer. In addition, the ratio of pore diameters of 15 μm or more is reduced, and the flavor of the coffee beverage may be weakened. More preferably, the basis weight is 20 g/m 2 or more and 25 g/m 2 or less (thickness)
The thickness of the coffee filter paper is preferably 55 μm or more and 90 μm or less. If the thickness of the coffee filter paper is less than 55 μm, the proportion of pores with a diameter of 30 μm or more increases, and the coffee beverage may have an unpleasant taste. If the thickness of the coffee filter paper is greater than 90 μm, the diameter of the roll per unit length becomes large, so that the frequency of replenishing the coffee filter paper to the brewing machine increases. More preferably, the thickness of the coffee filter paper is 60 μm or more and 80 μm or less.
（引張強度）
本発明のコーヒー濾紙は、ＪＡＰＡＮ ＴＡＰＰＩ Ｎｏ．７１に準じて測定した縦方向の乾燥引張強さが、１．６ｋｇ／１５ｍｍ以上であることが好ましい。また、ＪＡＰＡＮ ＴＡＰＰＩ Ｎｏ．７１に準じて測定した縦方向の湿潤引張強さが、０．６ｋｇ／１５ｍｍ以上であることが好ましい。縦方向の引張強度が上記した値未満であると、コーヒー濾紙が排出される際に断紙が発生しやすくなる。縦方向の乾燥引張強度は、２．０ｋｇ／１５ｍｍ以上であることがより好ましく、湿潤引張強さは、０．８ｋｇ／１５ｍｍ以上であることがより好ましい。なお、この湿潤引張強さは、サイズ剤を除去した後に測定した値である。
(tensile strength)
The coffee filter paper of the present invention is JAPAN TAPPI No. Preferably, the dry tensile strength in the machine direction measured according to 71 is 1.6 kg/15 mm or more. Also, JAPAN TAPPI No. It preferably has a longitudinal wet tensile strength of 0.6 kg/15 mm or more, measured according to G.71. If the tensile strength in the longitudinal direction is less than the above value, the coffee filter paper is likely to break when discharged. More preferably, the dry tensile strength in the longitudinal direction is 2.0 kg/15 mm or more, and the wet tensile strength is more preferably 0.8 kg/15 mm or more. This wet tensile strength is a value measured after removing the sizing agent.
（クレム吸水高さ）
本発明のコーヒー濾紙は、ＪＩＳ Ｐ８１４１に準じて測定した１０ｍｉｎ後のクレム吸水高さが、２ｍｍ以下であることが好ましい。このクレム吸水高さが２ｍｍより大きいと、コーヒー濾紙に液体がにじみやすいため、濡れたコーヒー濾紙が抽出器等に張り付いて剥がれにくくなり、排出時に破れ（穴あき）が発生しやすくなる。本発明のコーヒー濾紙において、このクレム吸水高さは１ｍｍ以下であることがより好ましく、０．５ｍｍ以下であることがさらに好ましく、０ｍｍであることが最も好ましい。
(Krem water absorption height)
The coffee filter paper of the present invention preferably has a Klemm water absorption height of 2 mm or less after 10 minutes measured according to JIS P8141. If the Klemm water absorption height is greater than 2 mm, the coffee filter paper tends to bleed liquid, and the wet coffee filter paper sticks to the extractor, etc., making it difficult to peel off, and is likely to tear (hole) when discharged. In the coffee filter paper of the present invention, the Klemm water absorption height is more preferably 1 mm or less, still more preferably 0.5 mm or less, and most preferably 0 mm.
（濾水時間）
本発明のコーヒー濾紙は、濾水時間（サイズ剤を除去した後、ＪＩＳ Ｐ３８０１（１９９５）に準拠して測定した、ヘルツベルヒ濾過度試験器を用いて１００ｍｌの水が紙を通過する時間）が１．８秒以上５．０秒以下であることが好ましい。この濾水時間が１．８秒未満だと、抽出が十分に行えず、コーヒー飲料の風味が薄くなる。また、この濾水時間が５．０秒より長いと、抽出時間が長くなる。この濾水時間は、２．０秒以上４．０秒以下であることがより好ましく、２．２秒以上３．０秒以下であることがさらに好ましい。
(Drainage time)
The coffee filter paper of the present invention has a drainage time (time for 100 ml of water to pass through the paper using a Herzberg filterability tester, measured according to JIS P3801 (1995) after removing the sizing agent). 0.8 seconds or longer and 5.0 seconds or shorter. If the drainage time is less than 1.8 seconds, the extraction cannot be performed sufficiently, and the flavor of the coffee beverage becomes weak. Also, if the drainage time is longer than 5.0 seconds, the extraction time will be long. The drainage time is more preferably 2.0 seconds or more and 4.0 seconds or less, and further preferably 2.2 seconds or more and 3.0 seconds or less.
＜実施例１＞
離解処理したマニラ麻パルプ１００質量％を抄紙用原料とし、短網抄紙機にて坪量２２．０ｇ／ｍ２目標で抄造した原紙を得た。
得られた原紙を、ポリアミドエピクロロヒドリン（日本ＰＭＣ社製、商品名：カイメン５５７Ｈ）１．８％、ポリアクリルアミド（荒川化学工業社製、商品名：ポリストロン１１７）１．８％塗工液でサイズプレス塗工し、一度乾燥を行った後、アルキルケテンダイマー（荒川化学工業社製、商品名：サイズパインＫ―９０３―２０）２．５％塗工液をサイズプレス塗工し、コーヒー濾紙を得た。
<Example 1>
Using 100% by mass of defibrated manila hemp pulp as a raw material for papermaking, a base paper was obtained by making a target basis weight of 22.0 g/m 2 with a short-mesh paper machine.
The resulting base paper was coated with 1.8% polyamide epichlorohydrin (manufactured by Nihon PMC, trade name: Kaimen 557H) and 1.8% polyacrylamide (manufactured by Arakawa Chemical Industries, trade name: Polystrone 117). After size press coating with a liquid and drying once, a 2.5% alkyl ketene dimer (manufactured by Arakawa Chemical Industries, trade name: Size Pine K-903-20) coating liquid is size press coated. A coffee filter paper was obtained.
＜実施例２＞
離解処理したマニラ麻パルプ１００質量％を抄紙用原料とし、短網抄紙機にて坪量２０．０ｇ／ｍ２目標で抄造した以外は、実施例１と同様にしてコーヒー濾紙を得た。
＜実施例３＞
離解処理したマニラ麻パルプ１００質量％を抄紙用原料とし、短網抄紙機にて坪量１８．５ｇ／ｍ２目標で抄造した以外は、実施例１と同様にしてコーヒー濾紙を得た。
<Example 2>
A coffee filter paper was obtained in the same manner as in Example 1, except that 100% by mass of defibrated manila hemp pulp was used as a raw material for papermaking, and paper was made with a short mesh paper machine with a target basis weight of 20.0 g/m 2 .
<Example 3>
A coffee filter paper was obtained in the same manner as in Example 1, except that 100% by mass of defibrated manila hemp pulp was used as a raw material for papermaking, and paper was made with a short mesh paper machine with a target basis weight of 18.5 g/m 2 .
＜実施例４＞
離解処理したマニラ麻パルプ７０質量％、離解処理した広葉樹パルプ３０質量％を混合したものを抄紙用原料とし、短網抄紙機にて坪量２２．０ｇ／ｍ２目標で抄造した以外は、実施例１と同様にしてコーヒー濾紙を得た。
＜実施例５＞
離解処理したマニラ麻パルプ８５質量％、離解処理したコットンパルプ１５質量％を混合したものを抄紙用原料とし、短網抄紙機にて坪量２２．０ｇ／ｍ２目標で抄造した以外は、実施例１と同様にしてコーヒー濾紙を得た。
<Example 4>
A mixture of 70% by mass of disaggregated Manila hemp pulp and 30% by mass of disaggregated hardwood pulp was used as a raw material for papermaking, and paper was made with a short mesh paper machine at a target weight of 22.0 g / m 2. Examples A coffee filter paper was obtained in the same manner as in 1.
<Example 5>
A mixture of 85% by mass of defiberized Manila hemp pulp and 15% by weight of defiberized cotton pulp was used as a raw material for papermaking, and paper was made with a short-mesh paper machine at a target weight of 22.0 g / m 2. Examples A coffee filter paper was obtained in the same manner as in 1.
＜比較例１＞
離解処理したマニラ麻パルプ７０質量％、離解処理した広葉樹パルプ３０質量％を混合したものを抄紙用原料とし、短網抄紙機にて坪量２６．５ｇ／ｍ２目標で抄造した以外は、実施例１と同様にしてコーヒー濾紙の紙を得た。
＜比較例２＞
離解処理したマニラ麻パルプ７０質量％、離解処理したコットンパルプ３０質量％を混合したものを抄紙用原料とし、短網抄紙機にて坪量２２．０ｇ／ｍ２目標で抄造した以外は、実施例１と同様にしてコーヒー濾紙を得た。
<Comparative Example 1>
A mixture of 70% by mass of disaggregated Manila hemp pulp and 30% by mass of disaggregated hardwood pulp was used as a raw material for papermaking, and paper was made with a short mesh paper machine with a target basis weight of 26.5 g / m 2. Examples A coffee filter paper was obtained in the same manner as in 1.
<Comparative Example 2>
A mixture of 70% by mass of defiberized Manila hemp pulp and 30% by weight of defiberized cotton pulp was used as a raw material for papermaking, and paper was made with a short-mesh paper machine at a target weight of 22.0 g / m 2. Examples A coffee filter paper was obtained in the same manner as in 1.
物性の測定方法
（気孔径（バブルポイント、平均気孔径、気孔径割合））
得られたコーヒー濾紙から直径２５ｍｍのサンプルを打ち抜いた。
細孔直径分布測定装置パームポロメーター（米国ＰＭＩ社製、型番：ＣＦＰ－１２００Ａ）を用い、測定液（米国ＰＭＩ社製、商品名：ＳＩＬＷＩＣＫ）に浸したサンプル（測定面積はφ１６ｍｍ程度）に圧力を加えていき、湿潤状態の空気流量と乾燥状態の空気流量を測定した。
Measurement method of physical properties (pore diameter (bubble point, average pore diameter, pore diameter ratio))
A sample with a diameter of 25 mm was punched out from the obtained coffee filter paper.
Using a pore diameter distribution measuring device perm porometer (manufactured by PMI, USA, model number: CFP-1200A), a sample (measuring area is about φ16 mm) immersed in a measurement solution (manufactured by PMI, USA, trade name: SILWICK) is subjected to pressure. was added and the air flow rate in the wet state and the air flow rate in the dry state were measured.
気孔径割合は、乾燥状態時と湿潤状態時の空気流量の比により算出した気孔径分布から求めた。
バブルポイント（最大気孔径）は、空気が貫通し始める圧力から換算される気孔径をバブルポイントとした。
平均気孔径（平均流量細孔径）は、乾燥状態の測定における圧力、流量曲線の１／２の傾きを示す曲線と、湿潤状態の測定における曲線が交わる点の圧力から平均気孔径を換算した。圧力と気孔径の換算は下記式１を用いた。
ｄ＝Ｃ・γ／Ｐ （式１）
（上記式１において、「ｄ（μｍ）」はサンプルの気孔径、「γ（ｍＮ／ｍ）」は測定体の表面張力、「Ｐ（Ｐａ）」は圧力、「Ｃ」は定数を表す。）
The pore size ratio was obtained from the pore size distribution calculated from the ratio of the air flow rates in the dry state and the wet state.
The bubble point (maximum pore diameter) was defined as the pore diameter converted from the pressure at which air begins to penetrate.
The average pore diameter (average flow pore diameter) was calculated from the pressure at the point where the curve representing the 1/2 slope of the pressure/flow curve measured in the dry state and the curve measured in the wet state intersect. The following formula 1 was used for conversion of pressure and pore diameter.
d=C・γ/P (Equation 1)
(In the above formula 1, "d (μm)" represents the pore diameter of the sample, "γ (mN/m)" represents the surface tension of the measuring body, "P (Pa)" represents the pressure, and "C" represents the constant. )
（坪量、厚さ）
坪量はＪＩＳ Ｐ８１２４に、厚さはＪＩＳ Ｐ８１１８に準拠して測定した。
（引張強さ）
乾燥引張強さは、ＪＡＰＡＮ ＴＡＰＰＩ ＮＯ．７１に準拠して測定した。
湿潤引張強さは、試験サンプル（幅１５ｍｍ、長さ２５ｍｍ程度）を、界面活性剤水溶液（第一工業製薬株式会社製、商品名：ネオコールＳＷ－Ｃ）に充分に浸漬し、流水で洗浄してサイズ剤を除去し、ろ紙で挟み込んで表面に付着した余剰な水分を取り除いた後に、ＪＡＰＡＮ ＴＡＰＰＩ ＮＯ．７１に準拠して測定した。
(basis weight, thickness)
The basis weight was measured according to JIS P8124, and the thickness was measured according to JIS P8118.
(Tensile strength)
The dry tensile strength is measured according to JAPAN TAPPI NO. 71.
The wet tensile strength was measured by immersing a test sample (about 15 mm in width and about 25 mm in length) in a surfactant aqueous solution (manufactured by Daiichi Kogyo Seiyaku Co., Ltd., trade name: Neocol SW-C) and washing with running water. to remove the sizing agent, sandwiched between filter papers to remove excess water adhering to the surface, and then wiped with JAPAN TAPPI NO. 71.
（クレム吸水度）
クレム吸水度はＪＩＳ Ｐ８１４１準拠して測定した。
（濾水時間）
濾水時間は、試験サンプル（５０～１００ｍｍ角程度）を、界面活性剤水溶液（第一工業製薬株式会社製、商品名：ネオコールＳＷ－Ｃ）に充分に浸漬し、流水で洗浄してサイズ剤を除去した後、ＪＩＳ Ｐ３８０１（１９９５）に準拠し、ヘルツベルヒ濾過度試験器を用いて１００ｍｌの水が紙を通過する時間を測定した。
(Krem water absorption)
The Klemm water absorbency was measured according to JIS P8141.
(Drainage time)
The drainage time was determined by immersing a test sample (about 50 to 100 mm square) in a surfactant aqueous solution (manufactured by Daiichi Kogyo Seiyaku Co., Ltd., trade name: Neocol SW-C), washing with running water, and removing a sizing agent. was removed, the time for 100 ml of water to pass through the paper was measured using a Herzberg filterability tester according to JIS P3801 (1995).
コーヒーの物性の測定方法
（コーヒーの抽出方法）
業務用のコーヒー抽出機械に、上記で製造したコーヒー濾紙をセットし、市販のコーヒー豆粉末（ＡＧＦ社製、商品名：スターバックス ハウスブレンド）からコーヒー飲料を抽出した。
（コーヒー飲料中の粒子数）
抽出したコーヒー飲料１０ｍＬを、シリンジサンプラにより微粒子計測器（リオン社製液中パーティクルカウンタ、型番：ＫＳ―４２Ｄ）に吸引し、２．０μｍ以上の粒子の粒径と個数濃度を測定した。
Measurement method of physical properties of coffee (coffee extraction method)
The coffee filter paper produced above was set in a commercial coffee extraction machine, and a coffee beverage was extracted from commercially available coffee bean powder (manufactured by AGF, trade name: Starbucks House Blend).
(Number of particles in coffee beverage)
10 mL of the extracted coffee beverage was sucked into a particle counter (Rion liquid particle counter, model number: KS-42D) using a syringe sampler, and the particle size and number concentration of particles of 2.0 μm or more were measured.
（コーヒー飲料の味）
十分に訓練したパネラー１名が、抽出したコーヒー飲料の味について下記基準で評価した。
風味 ３：濃い
２：若干薄い
１：薄い
雑味 ３：雑味が少ない
２：若干雑味がある
１：雑味が強い
(taste of coffee drink)
One well-trained panelist evaluated the taste of the extracted coffee beverage according to the following criteria.
Flavor 3: Strong 2: Slightly faint 1: Light Miscellaneous taste 3: Little miscellaneous taste 2: Slightly mischievous 1: Strong mischievous taste
「結果」
１５μｍ以上の気孔径割合が２０％程度の比較例１で製造したコーヒー濾紙を用いて抽出したコーヒー飲料は、１５μｍ以上の粒子径の粒子数が少なく、風味が薄かった。また、比較例１で製造したコーヒー濾紙は、濾水性が低く、コーヒー飲料の濾過時間が他に比べて長かった。３０μｍ以上の気孔径割合が２５％程度の比較例２で製造したコーヒー濾紙を用いて抽出したコーヒー飲料は、３０μｍ以上の粒子径の粒子数が多く、雑味が強かった。
"result"
The coffee beverage extracted using the coffee filter paper produced in Comparative Example 1, which has a pore size ratio of 15 μm or more, of about 20%, had a small number of particles with a particle size of 15 μm or more, and had a weak flavor. In addition, the coffee filter paper produced in Comparative Example 1 had low freeness, and the coffee beverage was filtered for a longer time than others. The coffee beverage extracted using the coffee filter paper produced in Comparative Example 2, which had a pore size ratio of 30 μm or more and was about 25%, had a large number of particles with a particle size of 30 μm or more and had a strong unpleasant taste.
それに対し、１５μｍ以上の気孔径割合が７０％程度、かつ、３０μｍ以上の気孔径割合が２０％程度である実施例３及び５で製造したコーヒー濾紙を用いて抽出したコーヒー飲料は、３０μｍ以上の粒子径の粒子数がやや多いものの、風味は濃く、雑味は若干ある程度であった。１５μｍ以上の気孔径割合が４５％程度、かつ、３０μｍ以上の気孔径割合が５％程度である実施例４で製造したコーヒー濾紙を用いて抽出したコーヒー飲料は、１５μｍ以上の粒子径の粒子数がやや少ないものの、風味は若干薄い程度で、雑味は少なかった。
さらに、１５μｍ以上の気孔径割合が６０％程度、かつ、３０μｍ以上の気孔径割合が１５％程度である実施例１及び２で製造したコーヒー濾紙を用いて抽出したコーヒー飲料は、１５μｍ及び３０μｍ以上の粒子径の粒子数は多すぎず少なすぎず、風味は濃く、雑味は少なく、美味しいコーヒーであった。
On the other hand, coffee beverages extracted using the coffee filter papers produced in Examples 3 and 5, which have a pore diameter ratio of 15 μm or more of about 70% and a pore diameter ratio of 30 μm or more of about 20%, have a pore size of 30 μm or more. Although the number of particles of the particle diameter was slightly large, the flavor was strong and the rough taste was slightly to some extent. The coffee beverage extracted using the coffee filter paper produced in Example 4, which has a pore size ratio of 15 μm or more of about 45% and a pore size ratio of 30 μm or more of about 5%, has a particle size of 15 μm or more. However, the flavor was slightly weak, and there was little miscellaneous taste.
Furthermore, coffee beverages extracted using the coffee filter papers produced in Examples 1 and 2, which have a pore diameter ratio of 15 μm or more of about 60% and a pore diameter ratio of 30 μm or more of about 15%, are 15 μm and 30 μm or more. The number of particles in the particle size of 1 was neither too large nor too small, and the coffee was delicious with a strong flavor and little miscellaneous taste.
Claims (4)
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| CN201980043261.2A CN112367883A (en) | 2018-07-12 | 2019-06-25 | Coffee filter paper |
| PCT/JP2019/025072 WO2020012946A1 (en) | 2018-07-12 | 2019-06-25 | Coffee filter paper |
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| DE6939904U (en) * | 1969-10-13 | 1970-03-05 | Vox Kaffee Werk Groneweg & Mei | FILTER TUBE FOR PREPARING A COFFEE DRINK |
| US4254694A (en) * | 1978-06-08 | 1981-03-10 | Ernesto Illy | Coffee machine |
| AU632149B2 (en) * | 1989-08-01 | 1992-12-17 | Kuraray Co., Ltd. | Coffee filter material and coffee filter bag |
| US5190653A (en) * | 1990-10-30 | 1993-03-02 | Kraft General Foods, Inc. | Coffee brewer filtration device |
| JPH06277148A (en) * | 1993-03-26 | 1994-10-04 | New Oji Paper Co Ltd | Coffee filter paper for automatic vending machine |
| JP3400017B2 (en) * | 1993-06-23 | 2003-04-28 | 王子製紙株式会社 | Coffee filter paper for vending machines |
| DE19513600C5 (en) * | 1995-04-10 | 2007-10-18 | Melitta Haushaltsprodukte Gmbh & Co. Kg | Filter for infused drinks, in particular coffee filters and method for producing such a filter |
| WO2006064756A1 (en) * | 2004-12-13 | 2006-06-22 | Suntory Limited | Process for producing coffee beverage using extract solution having undergone filtration |
| JP4629597B2 (en) * | 2006-03-01 | 2011-02-09 | 大王製紙株式会社 | Coffee filter paper for vending machines |
| DE202007016661U1 (en) * | 2007-12-03 | 2008-02-21 | Melitta Haushaltsprodukte Gmbh & Co Kommanditgesellschaft | Made of a filter paper, bag-like filter cartridge |
| WO2010119978A1 (en) * | 2009-04-17 | 2010-10-21 | 株式会社伊藤園 | Tea leaves for green tea drink extraction |
| JP5778416B2 (en) * | 2010-12-22 | 2015-09-16 | 旭化成せんい株式会社 | Extraction filter for extractor |
| JP6019100B2 (en) * | 2011-03-28 | 2016-11-02 | インターコンチネンタル グレート ブランズ エルエルシー | Beverage cartridge and filter element |
| JP2015198691A (en) * | 2014-04-04 | 2015-11-12 | 株式会社トゥモローカレッジ | green tea extract tool |
| JP6829595B2 (en) * | 2016-12-19 | 2021-02-10 | 花王株式会社 | How to make coffee extract |
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