JP4629597B2 - Coffee filter paper for vending machines - Google Patents
Coffee filter paper for vending machines Download PDFInfo
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- JP4629597B2 JP4629597B2 JP2006055219A JP2006055219A JP4629597B2 JP 4629597 B2 JP4629597 B2 JP 4629597B2 JP 2006055219 A JP2006055219 A JP 2006055219A JP 2006055219 A JP2006055219 A JP 2006055219A JP 4629597 B2 JP4629597 B2 JP 4629597B2
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- 239000000123 paper Substances 0.000 claims description 51
- -1 polyethylene terephthalate Polymers 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 14
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 12
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 12
- 239000002655 kraft paper Substances 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000004480 active ingredient Substances 0.000 claims description 6
- 238000004513 sizing Methods 0.000 claims description 5
- 241000533293 Sesbania emerus Species 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 239000000539 dimer Substances 0.000 claims 1
- 238000000605 extraction Methods 0.000 description 21
- 239000000843 powder Substances 0.000 description 18
- 238000011156 evaluation Methods 0.000 description 10
- 230000000740 bleeding effect Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 7
- 239000013054 paper strength agent Substances 0.000 description 7
- 238000001914 filtration Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 229920001131 Pulp (paper) Polymers 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 239000011122 softwood Substances 0.000 description 3
- 244000025254 Cannabis sativa Species 0.000 description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 235000009120 camo Nutrition 0.000 description 2
- 235000005607 chanvre indien Nutrition 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 239000011487 hemp Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- NBOCQTNZUPTTEI-UHFFFAOYSA-N 4-[4-(hydrazinesulfonyl)phenoxy]benzenesulfonohydrazide Chemical compound C1=CC(S(=O)(=O)NN)=CC=C1OC1=CC=C(S(=O)(=O)NN)C=C1 NBOCQTNZUPTTEI-UHFFFAOYSA-N 0.000 description 1
- 241000218631 Coniferophyta Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000269799 Perca fluviatilis Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 229920006319 cationized starch Polymers 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Description
本願発明は、コーヒー豆から抽出したコーヒーを販売するための自動販売機（以下、必要に応じて「自動販売機」という。）で使用されるコーヒー濾紙に関するものである。 The present invention relates to a coffee filter paper used in a vending machine for selling coffee extracted from coffee beans (hereinafter referred to as “vending machine” as required).
最近、コーヒーの自動販売機が広く普及し、到るところに設置されている。自動販売機はコインが投入されるとコーヒーの抽出筒に一定量のコーヒー粉末と熱湯が注入され、筒内で抽出されたコーヒー液がその底部のフィルターでろ過されて紙あるいはプラスチックのカップに入る構造になっている。しかも抽出液のろ過は抽出筒に圧力をかける等の方法で、コーヒー液が極めて短時間に調製される点に特徴がある。 Recently, vending machines for coffee have become widespread and installed everywhere. When a vending machine is inserted, a certain amount of coffee powder and hot water are injected into the coffee extraction cylinder, and the coffee liquid extracted in the cylinder is filtered by a filter at the bottom of the coffee extraction cylinder and enters a paper or plastic cup. It has a structure. Moreover, the filtration of the extract liquid is characterized in that the coffee liquid is prepared in a very short time by a method such as applying pressure to the extraction cylinder.
自動販売機用コーヒー濾紙は、巻取り形態で広く用いられており、その使用法は、巻取り濾紙ロールより濾紙を駆動ロールにて引き出し、位置を固定した後、ブリューワがセットされ、次いでブリューワ内の紙の上にコーヒーの粉体を乗せ、この上から熱湯を注いで、吸引若しくは加圧方法により圧力を掛け、コーヒー成分を抽出するということから成り立っている。コーヒーの抽出が終了した後の使用済み濾紙は、再度駆動ロールに引張られて廃棄され、同時にブリューワの位置には新しい未使用の濾紙が供給され次の抽出のための準備が整う。 The coffee filter paper for vending machines is widely used in the form of winding, and the usage method is that the filter paper is pulled out from the winding filter paper roll with the driving roll, the position is fixed, and then the brewer is set, and then inside the brewer This method consists of placing coffee powder on the paper, pouring hot water over the paper, applying pressure by a suction or pressurizing method, and extracting coffee components. After the coffee extraction is completed, the used filter paper is again pulled on the drive roll and discarded, and at the same time, a new unused filter paper is supplied to the brewer position and is ready for the next extraction.
この時、濾紙を構成する紙層の孔径が大き過ぎるとコーヒーを抽出している間に微細なコーヒー粉末の一部が抽出液側に混入するという粉落ち現象が発生する。又、逆に紙の孔径が小さ過ぎると抽出液体の濾過速度が遅くなるため、一定の時間でコーヒーの抽出を止めるとブリューワ内に液残りの状態が発生する。 At this time, if the pore size of the paper layer constituting the filter paper is too large, a powder falling phenomenon that a part of fine coffee powder is mixed into the extract side while coffee is being extracted occurs. On the other hand, if the paper hole diameter is too small, the filtration speed of the extracted liquid is slowed down. Therefore, if the extraction of coffee is stopped within a certain time, a liquid remaining state occurs in the brewer.
一方、濾紙の湿潤強度が不足すると使用済みの濾紙を引き出し走行させる際に紙切れを発生する。更に、紙のサイズ性が不足するとコーヒー液が濾紙の紙層全体に滲むため、ブリューワにおける紙押え部に濾紙が張り付き剥がれなくなるので濾紙の走行が不良となる。特にコーヒー液はコーヒー豆から抽出された油性成分を含有しているので、通常の水より表面張力が低く、濾紙層への滲み現象を起こし易い。 On the other hand, when the wet strength of the filter paper is insufficient, the used filter paper is pulled out and run out. Further, if the paper size is insufficient, the coffee liquid spreads over the entire paper layer of the filter paper, and the filter paper does not stick to and peel off from the paper presser in the brewer, so that the running of the filter paper becomes poor. In particular, since the coffee liquor contains an oily component extracted from coffee beans, the surface tension is lower than that of normal water, and the phenomenon of bleeding into the filter paper layer is likely to occur.
従って、自動販売機用のコーヒー濾紙の物性としてコーヒーの微細な粉末の捕集性（粉落ち防止性）とコーヒーを抽出する際の濾過速度とのバランスをとること、及び湿潤強度に優れ、サイズ性が高いことが要求される。 Therefore, as a physical property of coffee filter paper for vending machines, it balances the collection ability of fine coffee powder (prevention of powder falling) and the filtration speed when extracting coffee, and has excellent wet strength and size. High performance is required.
近年はコーヒー抽出時間もさらにスピードアップされる傾向があり、より抽出性が高く、高圧時でも破れないようなものが望まれている。 In recent years, the coffee extraction time tends to be further increased, and it is desired to have a higher extractability and not break even at high pressure.
なお、自動販売機用コーヒー濾紙として、クラフトパルプのみでは密度が高くなり、濾過速度が遅くなる傾向にあるため、麻パルプを配合する方法（特許第３０６３３７７号）やマーセル化パルプを配合する方法（特開平６−２７７１４８）等が提案されている。また、各種紙力剤等を添加することで湿潤強度を向上させる提案がされているが、自動販売機での紙切れ対策としては充分とはいえない。また、いずれもパルプ１００％であるため、濾過時にパルプ臭によってコーヒーの風味が害される問題がある。 In addition, as a coffee filter paper for a vending machine, density tends to be high only with kraft pulp, and the filtration rate tends to be slow. Therefore, a method of blending hemp pulp (Patent No. 30633377) or a method of blending mercerized pulp ( JP-A-6-277148) has been proposed. In addition, although proposals have been made to improve the wet strength by adding various paper strength agents and the like, it is not sufficient as a measure against paper breakage in a vending machine. Moreover, since all are pulp 100%, there exists a problem by which the flavor of coffee is harmed by a pulp smell at the time of filtration.
本願発明者は、コーヒー濾紙の原料として湿潤時にも強度の低下しないポリエチレンテレフタレート繊維を使用すること試みたが、孔径が大きく、粉落ちが発生した。そこでさらに研究し、コーヒー液の抽出性、粉落ち、破れ及び紙切れのない湿潤強度、パルプ臭の抑制等において満足することのできる自動販売機用コーヒー濾紙を提供することを本願発明の課題とするものである。 The inventor of the present application tried to use polyethylene terephthalate fiber, which does not decrease in strength even when wet, as a raw material for coffee filter paper, but the pore diameter was large and powder falling occurred. Accordingly, it is an object of the present invention to further research and provide a coffee filter paper for a vending machine that can satisfy the extractability of coffee liquor, wet strength without powder breakage, tearing and paper breakage, and suppression of pulp odor. Is.
本願発明は、上記課題を達成しようとしてなされたもので、本願発明の自動販売機用コーヒー濾紙は、クラフトパルプおよびポリエチレンテレフタレート繊維をもってその主原料とすることを基本的特徴とするものである。 The present invention has been made to achieve the above-mentioned problems, and the coffee filter paper for a vending machine according to the present invention has a basic feature of using kraft pulp and polyethylene terephthalate fiber as its main raw material.
前記主原料のうち、パルプとしては、針葉樹クラフトパルプ（ＮＫＰ）、広葉樹クラフトパルプ（ＬＫＰ）等の化学パルプがあり、さらに他のパルプとしては、サーモメカニカルパルプ（ＴＭＰ）、加圧ストーングランドパルプ（ＰＧＷ）等の機械パルプ等があり、また、クラフトパルプの中では、特に限定するものではないが、強度のある針葉樹、特に漂白によりパルプ臭を除去できるため、針葉樹晒クラフトパルプ（ＮＢＫＰ）が好ましい。カナディアンフリーネスは４００〜７００ｃｃ、平均繊維長は１．７〜２．７ｍｍの長繊維が好ましく、クラフトパルプの配合率は全原料中２５〜７５重量％が好ましく、３０〜７０重量％がさらに好ましい。２５重量％未満では濾紙に存在する孔径が大きくなってコーヒー抽出時に粉落ちが発生し、７５重量％を超えると孔径が小さくなってコーヒーの抽出性が悪くなる。 Among the main raw materials, as pulp, there are chemical pulps such as softwood kraft pulp (NKP) and hardwood kraft pulp (LKP), and as other pulps, thermomechanical pulp (TMP), pressurized stone ground pulp ( There are mechanical pulps such as PGW), and among the kraft pulps, there is no particular limitation. However, since soft pulp can be removed by strong softwood, especially bleaching, softwood bleached kraft pulp (NBKP) is preferable. . Canadian freeness is preferably 400 to 700 cc, and the average fiber length is preferably 1.7 to 2.7 mm long fiber. The blending ratio of kraft pulp is preferably 25 to 75% by weight, more preferably 30 to 70% by weight. If it is less than 25% by weight, the pore size present in the filter paper becomes large and powder falling occurs during coffee extraction. If it exceeds 75% by weight, the pore size becomes small and the coffee extractability becomes poor.
また、前記主原料のうち、ポリエチレンテレフタレート繊維としては、芯鞘構造であることが好ましく、融点は１０５〜１３０℃が好ましい。１０５℃未満ではフィルターとして使用時に熱湯により軟化することがある。１３０℃を超えるとパルプとの絡みが悪く、紙力強度が低下する。以上の条件から例えば、芯鞘構造である低融点ポリエチレンテレフタレート繊維（融点１１０℃、商品名４０８０：ユニチカ社製）が好適に使用可能である。配合率は全原料中、２５〜７５重量％が好ましく、３０〜７０重量％がさらに好ましい。２５重量％未満では濾紙に存在する孔径が小さくなってコーヒーの抽出性が悪く、７５重量％を超えると孔径が大きくなってコーヒーの抽出時に粉落ちが発生する。 Of the main raw materials, the polyethylene terephthalate fiber preferably has a core-sheath structure, and the melting point is preferably 105 to 130 ° C. If it is less than 105 degreeC, it may soften with hot water at the time of use as a filter. When it exceeds 130 degreeC, the tangle with a pulp will be bad and paper strength will fall. From the above conditions, for example, a low melting point polyethylene terephthalate fiber having a core-sheath structure (melting point: 110 ° C., trade name: 4080, manufactured by Unitika Ltd.) can be suitably used. The blending ratio is preferably 25 to 75% by weight, more preferably 30 to 70% by weight, based on all raw materials. If it is less than 25% by weight, the pore size present in the filter paper becomes small and the extractability of coffee is poor, and if it exceeds 75% by weight, the pore size becomes large and powder falling occurs during coffee extraction.
本願発明の自動販売機用コーヒー濾紙の米坪は特に限定しないが、１５〜３０ｇ／ｍ2が好ましい。１５ｇ／ｍ2未満では紙厚が薄いために走行性が悪く粉落ちしやすく、３０ｇ／ｍ2を超えると紙厚が厚いためにコーヒーの抽出性が悪くなる。 The rice paper weight of the coffee filter paper for vending machines of the present invention is not particularly limited, but is preferably 15 to 30 g / m 2 . If it is less than 15 g / m 2 , the paper thickness is thin and the running property is poor and the powder tends to fall off. If it exceeds 30 g / m 2 , the paper thickness is thick and the coffee extractability becomes poor.
本願発明のコーヒー濾紙には、コーヒー濾過時にパルプ・繊維等が抽出されるのを防止するため、湿潤紙力剤を内添することが好ましい。湿潤紙力剤としては両性ポリアクリルアミド、ポリアミドエピクロロヒドリン等がある。添加量は原料中の絶乾パルプ１ｔに対して、有効成分２〜１０ｋｇが好ましく、特に４〜８ｋｇが好ましい。２ｋｇ未満では効果がなく、１０ｋｇを超えると過剰添加となり、抽出性が悪化する。 It is preferable to add a wet paper strength agent to the coffee filter paper of the present invention in order to prevent extraction of pulp, fibers and the like during coffee filtration. Examples of wet paper strength agents include amphoteric polyacrylamide and polyamide epichlorohydrin. The added amount is preferably 2 to 10 kg of active ingredients, particularly 4 to 8 kg, with respect to 1 t of absolutely dry pulp in the raw material. If it is less than 2 kg, there is no effect, and if it exceeds 10 kg, excessive addition occurs and the extractability deteriorates.
また、湿潤紙力剤はポリエチレンテレフタレート繊維に対して定着が悪いため、硫酸バンド、カルボキシルメチルセルロース（ＣＭＣ）、カチオン化澱粉等の定着剤を併用することが好ましく、特にＣＭＣがポリエチレンテレフタレート繊維の定着性の効果が高く、より好ましい。添加量は絶乾原料１ｔに対して、有効成分１〜５ｋｇが好ましい。 In addition, since the wet paper strength agent is poorly fixed to polyethylene terephthalate fibers, it is preferable to use a fixing agent such as sulfate band, carboxymethyl cellulose (CMC), cationized starch or the like. The effect of is high and more preferable. The addition amount is preferably 1 to 5 kg of active ingredients with respect to 1 t of the absolutely dry raw material.
サイズ剤はコーヒー液が濾紙の紙層全体に滲むことを防止する効果があり、アルキルケテンダイマー（ＡＫＤ）、アルケニル無水コハク酸（ＡＳＡ）等があるが、ポリエチレンテレフタレート繊維への定着性良好な、ＡＫＤを外添することが好ましい。なお、内添では原料に薬品が歩留らず、効果が低い。塗布量は、有効成分０．１〜１．６ｇ／ｍ2、特に０．２〜１．５g／ｍ2が好ましい。０．１未満では薬品効果がなく滲みが発生し、１．６g／ｍ2を超えると過剰添加により、抽出性が低下する。 The sizing agent has an effect of preventing the coffee liquid from spreading throughout the paper layer of the filter paper, and there are alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), etc., but good fixability to polyethylene terephthalate fiber, It is preferable to externally add AKD. In addition, chemicals do not yield in the raw material, and the effect is low. The coating amount is preferably 0.1 to 1.6 g / m 2 , particularly preferably 0.2 to 1.5 g / m 2 . If it is less than 0.1, there is no chemical effect and bleeding occurs. If it exceeds 1.6 g / m 2 , the extractability decreases due to excessive addition.
本願発明のコーヒー濾紙は、通常の湿式抄紙機で容易に製造できる。用いられる抄紙機は、円網，短網，長網，パーチフォーマー，ロトフォーマー，ハイドロフォーマーなどのいずれでもよく、乾燥機はヤンキー型，多筒型，スルー型のいずれでも良い。 The coffee filter paper of the present invention can be easily produced with a normal wet paper machine. The paper machine used may be any one of a circular net, a short net, a long net, a perch former, a rotoformer, a hydroformer, and the drying machine may be any of a Yankee type, a multi-cylinder type, and a through type.
上記によって製造された自動販売機用コーヒー濾紙は、下記定義により規定される湿潤引張強度が１２Ｎ／１５ｍｍ以上、好ましくは１５Ｎ／１５ｍｍ以上とすることで、使用済みの濾紙を引き出し走行させる際の紙切れが発生することなく、また、パルプ臭が抑制されることで、コーヒーの風味を損なうことのない、自動販売機用コーヒー濾紙とすることができる。 The coffee filter paper for a vending machine manufactured as described above has a wet tensile strength specified by the following definition of 12 N / 15 mm or more, preferably 15 N / 15 mm or more. It is possible to obtain a coffee filter paper for a vending machine that does not impair the flavor of the coffee without the occurrence of odor and the pulp odor.
湿潤引張強度
蒸留水中に１０分間浸漬し、余分な水分を拭き、ＪＩＳ Ｐ ８１３５：１９７６に準じた引張強度を測定したもの。
Wet tensile strength Immersion in distilled water for 10 minutes, wipe off excess moisture, and measure the tensile strength according to JIS P 8135: 1976.
本願発明の自動販売機用コーヒー濾紙は、原料として、パルプ（特に、主原料としてはクラフトパルプ）とポリエチレンテレフタレート繊維とを適切な比率で配合することにより、コーヒー液の抽出性、粉落ち抑制、臭気防止、滲み防止等の諸物性をバランスよく達成することができる効果がある。 The coffee filter paper for a vending machine of the present invention is made by blending pulp (particularly, kraft pulp as a main raw material) and polyethylene terephthalate fiber in an appropriate ratio as a raw material. There is an effect that various physical properties such as odor prevention and bleeding prevention can be achieved in a balanced manner.
続いて本願発明の好適な実施例を説明する。なお、各実施例および比較例のコーヒー濾紙とも原紙の米坪は２０ｇ／ｍ2とした。 Next, a preferred embodiment of the present invention will be described. In addition, the base weight of the base paper of both the coffee filter papers of each Example and Comparative Example was 20 g / m 2 .
原料構成
パルプ
針葉樹晒クラフトパルプ（ＮＢＫＰ）：カナディアンフリーネス５００ｃｃ
ポリエチレンテレフタレート繊維
低融点ポリエチレンテレフタレート繊維：融点は表１記載
※従来品は、現在使用されているコーヒー濾紙（クラフトパルプ＋麻パルプ）
内添薬品
湿潤紙力剤・・・ポリアミドエピクロロヒドリン系：星光ＰＭＣ社製、ＷＳ４０２４
（原料中の絶乾パルプ１ｔに対する有効成分添加量を表１に記載）
定着剤・・・カルボキシルメチルセルロース：第一工業製薬社製、セロゲンＦＳＡ
（絶乾原料１ｔに対する有効成分添加量は２ｋｇ）
外添薬品
外添サイズ剤・・・アルキルケテンダイマー（ＡＫＤ）：星光ＰＭＣ社製、ＡＤ１６０６（塗布量は表１に記載）
評価方法
湿潤引張強度：蒸留水中に１０分間浸漬し、余分な水分を拭き、ＪＩＳ Ｐ ８１３５：１９７６に準じた引張強度を測定した。
Constituent pulp Conifer bleached kraft pulp (NBKP): Canadian freeness 500cc
Polyethylene terephthalate fiber Low melting point polyethylene terephthalate fiber: Melting points listed in Table 1 * Conventional products are currently used coffee filter paper (craft pulp + hemp pulp)
Internal chemicals wet paper strength agent ... Polyamide epichlorohydrin series: WS4024 manufactured by Seiko PMC
(The amount of active ingredient added to 1 ton of dry pulp in the raw material is listed in Table 1)
Fixing agent: Carboxymethyl cellulose: Serogen FSA, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.
(The amount of active ingredients added to 1 ton of dry ingredients is 2 kg)
External additive sizing agent: Alkyl ketene dimer (AKD): manufactured by Seiko PMC Co., Ltd., AD1606 (coating amount is listed in Table 1)
Evaluation Method Wet Tensile Strength: Dipped in distilled water for 10 minutes, wiped off excess moisture, and measured the tensile strength according to JIS P 8135: 1976.
抽出性：自動販売機での実機試験を行い、コーヒー豆の抽出性（濃度、時間）を確認した。
◎：抽出濃度、時間ともに最適である。
○ａ：やや早く抽出完了するが、抽出濃度に問題はない。
○ｂ：やや遅く抽出完了するが、自動販売機の運用上の問題はない。
×ａ：早く抽出完了し、コーヒーも薄い。
×ｂ：抽出速度が遅く、時間内に抽出が完了しない。
Extractability: An actual machine test was conducted with a vending machine, and the extractability (concentration, time) of the coffee beans was confirmed.
A: The extraction concentration and time are optimal.
○ a: Extraction is completed a little earlier, but there is no problem with the extraction concentration.
○ b: Extraction is completed a little later, but there is no problem in the operation of the vending machine.
Xa: The extraction is completed quickly and the coffee is thin.
Xb: The extraction speed is slow and the extraction is not completed in time.
粉落ち：自動販売機での実機試験を行い、３０分静置後、カップ底を確認した。
◎：粉末は見当たらず。
○：わずかに粉末が確認された。
×：底面全体的に粉末が見られた。
Powder fall: An actual machine test was performed with a vending machine, and after standing for 30 minutes, the bottom of the cup was confirmed.
A: No powder is found.
○: Slight powder was confirmed.
X: Powder was seen on the entire bottom surface.
臭気：巻取状のコーヒー濾紙の臭気について２０人で調査した総合評価による。
◎：無臭
○：何か臭いがあると感じる程度。
×：パルプ臭があるとはっきりわかる。
Odor: Based on a comprehensive evaluation conducted by 20 people on the odor of rolled-up coffee filter paper.
◎: Odorless ○: Degree of smell.
X: It is clear that there is a pulp odor.
滲み：自動販売機での実機試験を行い、周囲への滲みを確認した。
◎：抽出範囲以外への滲みはない。
○：抽出範囲外への滲みはあったが、前後の抽出部分までの滲みはない。
×：前後の抽出範囲にも滲み出した。
Bleeding: An actual machine test was conducted with a vending machine and bleeding was confirmed.
A: There is no bleeding outside the extraction range.
○: There was bleeding outside the extraction range, but there was no bleeding up to the front and rear extraction parts.
X: It also oozed out to the extraction range before and behind.
総合評価
（１） 表１に示されている実施例１〜１７の自動販売機用コーヒー濾紙は、その原料中のパルプとポリエチレンテレフタレート繊維の比率がいずれも２５〜７５重量％の範囲にあり、抽出性、粉落ち、臭気及び滲みのすべての評価項目において、いずれも良好な結果（最適評価である◎または実用上問題のない〇評価）を得た。さらに、湿潤引張強度についても、いずれも１２．０〜２１．０Ｎ／１５ｍｍで、従来品（１０．４Ｎ／１５ｍｍ）の場合よりも良好な結果が得られた。なお、実施例１０において「粉落ち」評価が◎ではなくて〇であるのは、実施例１と比較して湿潤紙力剤が少ないため、強度不足によって粉落ち適性が僅かに劣るためであり、実施例１３において「抽出性」評価が〇ａであるのは、実施例１と比較して湿潤紙力剤が多いため、基材を被覆することで抽出性が若干劣るためであり、実施例１４において「滲み」評価が〇であるのは、実施例１と比較してサイズ剤が少ないためであり、実施例１７において「抽出性」評価が〇ａであるのは、実施例１と比較してサイズ剤が多いため、基材を被覆することで抽出性が若干劣るためである。
Comprehensive evaluation (1) The coffee filter paper for vending machines of Examples 1 to 17 shown in Table 1 has a ratio of pulp to polyethylene terephthalate fiber in the raw material in the range of 25 to 75% by weight, In all the evaluation items of extractability, powder omission, odor and bleeding, good results were obtained (optimal evaluation ◎ or practically no problem O evaluation). Further, the wet tensile strengths were all 12.0 to 21.0 N / 15 mm, which was better than the conventional product (10.4 N / 15 mm). In Example 10, the evaluation of “powder falling” is not ◎ but ◯ because there is less wet paper strength agent compared to Example 1, and the powder falling suitability is slightly inferior due to insufficient strength. The reason why the “extractability” evaluation in Example 13 is “a” is that the amount of wet paper strength agent is larger than that in Example 1, and therefore the extractability is slightly inferior by covering the substrate. In Example 14, the “bleed” evaluation is ◯ because there is less sizing agent compared to Example 1. In Example 17, the “extractability” evaluation is ◯ a. This is because the extractability is slightly inferior by coating the base material because there are many sizing agents.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019059225A1 (en) | 2017-09-22 | 2019-03-28 | 株式会社巴川製紙所 | Thermoplastic fiber sheet |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5674374B2 (en) * | 2010-08-02 | 2015-02-25 | 大王製紙株式会社 | Filter paper |
| CN103911911A (en) * | 2014-03-20 | 2014-07-09 | 杭州特种纸业有限公司 | Qualitative filter paper and its making technology |
| JP7168362B2 (en) * | 2018-07-12 | 2022-11-09 | 日本製紙パピリア株式会社 | coffee filter paper |
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| WO1990004666A1 (en) * | 1988-10-28 | 1990-05-03 | Teijin Limited | Wet-process nonwoven fabric and ultrafine polyester fibers therefor |
| JPH02258007A (en) * | 1989-03-30 | 1990-10-18 | Kuraray Co Ltd | Filter paper |
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| JPH078385A (en) * | 1993-06-23 | 1995-01-13 | New Oji Paper Co Ltd | Coffee filter paper for automatic vending machine |
| JPH1086970A (en) * | 1996-09-18 | 1998-04-07 | Oji Paper Co Ltd | Base paper for filter pack provided with heat-seal property |
| JP2004181341A (en) * | 2002-12-03 | 2004-07-02 | Teijin Fibers Ltd | Wet nonwoven fabric for filter and polyester binder fiber for use therein |
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| JPS5799641U (en) * | 1980-12-11 | 1982-06-18 | ||
| WO1990004666A1 (en) * | 1988-10-28 | 1990-05-03 | Teijin Limited | Wet-process nonwoven fabric and ultrafine polyester fibers therefor |
| JPH02258007A (en) * | 1989-03-30 | 1990-10-18 | Kuraray Co Ltd | Filter paper |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019059225A1 (en) | 2017-09-22 | 2019-03-28 | 株式会社巴川製紙所 | Thermoplastic fiber sheet |
| US11408125B2 (en) | 2017-09-22 | 2022-08-09 | Tomoegawa Co., Ltd. | Thermoplastic fiber sheet |
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| JP2007231458A (en) | 2007-09-13 |
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