WO2020012946A1 - Papier-filtre à café - Google Patents

Papier-filtre à café Download PDF

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Publication number
WO2020012946A1
WO2020012946A1 PCT/JP2019/025072 JP2019025072W WO2020012946A1 WO 2020012946 A1 WO2020012946 A1 WO 2020012946A1 JP 2019025072 W JP2019025072 W JP 2019025072W WO 2020012946 A1 WO2020012946 A1 WO 2020012946A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter paper
coffee
coffee filter
paper
less
Prior art date
Application number
PCT/JP2019/025072
Other languages
English (en)
Japanese (ja)
Inventor
明 奈良
隆志 白石
Original Assignee
日本製紙パピリア株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本製紙パピリア株式会社 filed Critical 日本製紙パピリア株式会社
Priority to CN201980043261.2A priority Critical patent/CN112367883A/zh
Publication of WO2020012946A1 publication Critical patent/WO2020012946A1/fr

Links

Classifications

    • 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
    • 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
    • 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

Definitions

  • the present invention relates to coffee filter paper for mechanical extraction.
  • Coffee extraction machines that grind beans one cup at a time are used in convenience stores, restaurants, vending machines, and the like.
  • Coffee filter paper wound into a roll is used in coffee extraction machines.
  • coffee bean powder and hot water are poured while coffee filter paper pulled out of the roll is sandwiched between extraction machines (brewers) to extract coffee drinks, and the extracted coffee drinks are filtered by coffee filter paper. It is poured into a cup.
  • the coffee filter paper after extraction is fed by a paper feed roller with the coffee bean powder after extraction placed thereon and discharged.
  • the coffee filter paper for mechanical extraction is required to be free from troubles such as paper breakage or tearing in a wet state after coffee coffee extraction.
  • Means for solving the problems of the present invention are as follows. 1.
  • a coffee filter paper characterized by having a pore diameter ratio of not less than 40% and a pore diameter ratio of not less than 30 ⁇ m being 20% or less. 2.
  • the pore diameter ratio of 15 ⁇ m or more is 45% or more.
  • the coffee filter paper according to 1. 3.
  • the ratio of pore diameters of 30 ⁇ m or more is 17% or less. Or 2.
  • the content of wood pulp in the papermaking fiber is 30% by mass or less. ⁇ 3.
  • the coffee filter paper of the present invention can extract a coffee beverage having a full-fledged flavor and a low flavor by satisfying a specific pore size distribution.
  • the coffee filter paper of the present invention is characterized in that the pore size ratio of 15 ⁇ m or more is 40% or more, and the pore size ratio of 30 ⁇ m or more is 20% or less.
  • the coffee filter paper of the present invention for machine extraction is a different article from the hand drip coffee filter which has significantly different physical properties such as drainage, water resistance and strength.
  • the type of papermaking fiber for producing the paper substrate used for the coffee filter paper of the present invention is not particularly limited, and softwood pulp, wood pulp such as hardwood pulp, flax, kenaf, mulberry, bast fiber such as mitsumata, Non-wood pulp such as hard fiber such as bagasse, bamboo and espart, seed hair fiber such as cotton pulp, leaf vein fiber such as Manila hemp pulp and sisal pulp, and synthetic fiber (polypropylene fiber, rayon fiber, polyethylene terephthalate fiber) Alternatively, two or more kinds can be used.
  • pulp chemical pulp, ground pulp, chemical ground pulp, thermomechanical pulp or the like by kraft cooking, acid / neutral / alkaline sulfite cooking, soda salt cooking, or the like can be used.
  • the papermaking fiber used in the present invention is not particularly limited. However, by setting the content of wood pulp in the papermaking fiber to 30% by mass or less, a paper base satisfying the pore size distribution of the present invention can be obtained. It is easier to make paper. From the viewpoint of easy production of the target paper substrate, the content of the wood pulp is more preferably 20% by mass or less, further preferably 10% by mass or less, and no wood pulp is contained. Is most preferred. By using hemp pulp as a pulp other than wood pulp, it becomes easy to make a paper base material satisfying the pore size distribution of the present invention.
  • the coffee filter paper of the present invention may use various additives as needed, provided that there is no problem with the voluntary standards of paper for food use and FDA approval. It is possible. It is preferable that the additives include a wet paper strength enhancer, a dry paper strength enhancer, and a sizing agent in order to satisfy the wet strength, sizing property, and water absorption properties required for coffee filter paper.
  • the wet paper strength enhancer is not particularly limited, but may be dialdehyde guar gum, glyoxal-modified polyacrylamide (acrylamide-diallyldimethylammonium chloride copolymer), polyamide epichlorohydrin, polyamide polyamine epichlorohydride. Phosphorus, polyamine epichlorohydrin, polyethyleneimine and the like can be used.
  • the dry paper strength enhancer is not particularly limited, and carboxymethyl cellulose (CMC), carboxymethyl guar gum, polyacrylamide, glyoxal-modified polyacrylamide (acrylamide-diallyldimethylammonium chloride copolymer), hydroxypropyl Guar gum etc. can be used.
  • CMC carboxymethyl cellulose
  • carboxymethyl guar gum polyacrylamide
  • glyoxal-modified polyacrylamide acrylamide-diallyldimethylammonium chloride copolymer
  • the sizing agent is not particularly limited, and alkyl ketene dimer (AKD), styrene / acrylonitrile copolymer, anionic polyurethane, styrene / maleic anhydride copolymer and the like can be used.
  • alkyl ketene dimer styrene / acrylonitrile copolymer
  • anionic polyurethane styrene / maleic anhydride copolymer and the like
  • the method for producing the coffee filter paper of the present invention is not particularly limited, for example, a paper base containing papermaking fibers and a stock containing a wet strength agent, a dry strength agent, other additives and the like can be used.
  • a material is made into paper and a coating liquid containing a sizing agent or the like is applied to a paper base material.
  • the papermaking method of the paper substrate is not particularly limited, and includes a fourdrinier paper machine including a top wire, an on-top former, a gap former, a circular net paper machine, a short net paper machine, and an inclined short net paper machine. And the like.
  • the drying step can be appropriately selected from a multi-cylinder cylinder dryer, a Yankee dryer, a hot air dryer, and the like.
  • the method for applying the coating liquid is not particularly limited, and the coating liquid can be applied by a method such as size press or nip coating.
  • the coffee filter paper of the present invention Since the coffee filter paper of the present invention has a pore size ratio of 15% or more of 40% or more, a coffee beverage having a full-fledged flavor can be extracted in a short extraction time.
  • the pore diameter ratio of 15 ⁇ m or more is preferably 45% or more, more preferably 50% or more, and even more preferably 60% or more.
  • the coffee filter paper of the present invention can extract a coffee beverage with less unpleasant taste when the pore size ratio of 30 ⁇ m or more is 20% or less.
  • the pore diameter ratio of 30 ⁇ m or more is preferably 17% or less, more preferably 15% or less.
  • the pore diameter ratio is determined by applying air pressure to a sample immersed in a measurement liquid (SILWICK, PMI, USA) using a pore porometer (PMI, USA, model number CFP-1200A).
  • the pore diameter distribution is determined from the ratio of the air flow rate in the wet state to the air flow rate in the dry state, and is a value calculated from the pore diameter distribution.
  • the basis weight of the coffee filter paper of the present invention is preferably from 18 g / m 2 to 30 g / m 2 .
  • the basis weight is more preferably 20 g / m 2 or more and 25 g / m 2 or less (thickness).
  • the thickness of the coffee filter paper is preferably 55 ⁇ m or more and 90 ⁇ m or less.
  • the thickness of the coffee filter paper is thinner than 55 ⁇ m, the ratio of pore diameters of 30 ⁇ m or more becomes large, and the coffee beverage may have a taste. If the thickness of the coffee filter paper is greater than 90 ⁇ m, the roll diameter per unit length increases, and the frequency of replenishment of the coffee filter paper to the extraction machine increases.
  • the thickness of the coffee filter paper is more preferably 60 ⁇ m or more and 80 ⁇ m or less.
  • the coffee filter paper of the present invention has JAPAN TAPPI No. It is preferable that the dry tensile strength in the longitudinal direction measured according to No. 71 is 1.6 kg / 15 mm or more. In addition, JAPAN TAPPI No. It is preferable that the wet tensile strength in the longitudinal direction measured according to No. 71 is 0.6 kg / 15 mm or more. If the tensile strength in the longitudinal direction is less than the above-mentioned value, paper breakage is likely to occur when the coffee filter paper is discharged.
  • the dry tensile strength in the longitudinal direction is more preferably 2.0 kg / 15 mm or more, and the wet tensile strength is more preferably 0.8 kg / 15 mm or more.
  • the wet tensile strength is a value measured after removing the sizing agent.
  • the coffee filter paper of the present invention preferably has a creme water absorption height of 10 mm or less after 10 minutes measured according to JIS P8141. If the Krem water absorption height is larger than 2 mm, the liquid easily bleeds into the coffee filter paper, so that the wet coffee filter paper sticks to the extractor or the like and is hardly peeled off, and tearing (perforation) is likely to occur at the time of discharge. In the coffee filter paper of the present invention, this Krem water absorption height is more preferably 1 mm or less, further preferably 0.5 mm or less, and most preferably 0 mm.
  • the coffee filter paper of the present invention has a drainage time (time after removing the sizing agent, which is measured in accordance with JIS P3801 (1995), through which 100 ml of water passes through the paper using a Hertzberg filtration degree tester). It is preferable that the period is not shorter than 0.8 seconds and shorter than 5.0 seconds. If the drainage time is less than 1.8 seconds, extraction cannot be performed sufficiently, and the flavor of the coffee beverage becomes thin. If the drainage time is longer than 5.0 seconds, the extraction time becomes longer.
  • the drainage time is more preferably 2.0 seconds or more and 4.0 seconds or less, and even more preferably 2.2 seconds or more and 3.0 seconds or less.
  • Example 1 Using 100% by mass of the disintegrated Manila hemp pulp as a raw material for papermaking, a base paper made by a short wire paper machine with a target weight of 22.0 g / m 2 was obtained. The obtained base paper is coated with 1.8% of polyamide epichlorohydrin (trade name: Caimen 557H, manufactured by PMC Japan) and 1.8% of polyacrylamide (trade name: Polystron 117, manufactured by Arakawa Chemical Industry Co., Ltd.). After performing size press coating with a liquid and drying once, an alkyl ketene dimer (manufactured by Arakawa Chemical Industries, trade name: size pine K-903-20) 2.5% coating liquid is subjected to size press coating, Coffee filter paper was obtained.
  • polyamide epichlorohydrin trade name: Caimen 557H, manufactured by PMC Japan
  • polyacrylamide trade name: Polystron 117, manufactured by Arakawa Chemical Industry Co., Ltd.
  • Example 2 100 mass% Manila hemp pulp maceration processing the papermaking material, except for using papermaking at a basis weight 20.0 g / m 2 target at short wire cloth paper machine, to obtain a coffee filter paper in the same manner as in Example 1.
  • Example 3 100 mass% Manila hemp pulp maceration processing the papermaking material, except for using papermaking at a basis weight 18.5 g / m 2 target at short wire cloth paper machine, to obtain a coffee filter paper in the same manner as in Example 1.
  • Example 4 Maceration treated Manila hemp pulp 70 wt%, except that the papermaking raw material a mixture of 30 wt% hardwood pulp maceration processing, and papermaking at a basis weight 22.0 g / m 2 target at short wire cloth paper machine, Example Coffee filter paper was obtained in the same manner as in 1.
  • Example 5> Except that a mixture of 85% by mass of defibrated Manila hemp pulp and 15% by mass of defibrated cotton pulp was used as a raw material for papermaking, and a short-mesh paper machine was used to make a paper with a basis weight of 22.0 g / m 2. Coffee filter paper was obtained in the same manner as in 1.
  • Measurement method of physical properties pore size (bubble point, average pore size, pore size ratio)
  • a sample having a diameter of 25 mm was punched from the obtained coffee filter paper. Pressure was applied to a sample (measurement area is about ⁇ 16 mm) immersed in a measurement liquid (manufactured by PMI, USA, trade name: SILWICK) using a pore diameter distribution measuring device, a palm porometer (manufactured by US PMI, model: CFP-1200A). Was added, and the air flow rate in the wet state and the air flow rate in the dry state were measured.
  • SILWICK pore diameter distribution measuring device
  • a palm porometer manufactured by US PMI, model: CFP-1200A
  • the pore diameter ratio was determined from the pore diameter distribution calculated from the ratio of the air flow rate in the dry state to the air flow rate in the wet state.
  • the bubble point maximum pore diameter
  • the average pore diameter was obtained by converting the average pore diameter from the pressure at a point where a curve indicating a slope of 1/2 of the pressure and flow rate curve in the dry state measurement and the curve in the wet state measurement intersect. The following equation 1 was used to convert the pressure and the pore diameter.
  • the grammage was measured according to JIS P8124, and the thickness was measured according to JIS P8118.
  • the dry tensile strength was measured according to JAPAN TAPPI NO. 71.
  • a test sample (about 15 mm in width and about 25 mm in length) was sufficiently immersed in an aqueous surfactant solution (manufactured by Daiichi Kogyo Seiyaku Co., Ltd., trade name: Neocol SW-C) and washed with running water. After removing the sizing agent and sandwiching it with filter paper to remove excess water adhering to the surface, JAPAN TAPPI NO. 71.
  • the Klemm water absorption was measured according to JIS P8141.
  • Drainage time For the drainage time, the test sample (about 50 to 100 mm square) was sufficiently immersed in an aqueous surfactant solution (manufactured by Daiichi Kogyo Seiyaku Co., Ltd., trade name: Neocol SW-C), washed with running water, and washed with running water. After removing, the time required for 100 ml of water to pass through the paper was measured using a Herzberg filtration degree tester according to JIS P3801 (1995).
  • Method for measuring physical properties of coffee Method for extracting coffee
  • 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).
  • AGF automatic syringe sampler
  • a fine particle counter particle counter in liquid, manufactured by Rion, model number: KS-42D
  • the particle size and number concentration of particles of 2.0 ⁇ m or more were measured.
  • the coffee beverage extracted using the coffee filter paper manufactured in Comparative Example 1 having a pore diameter ratio of 15 ⁇ m or more and about 20% had a small number of particles having a particle diameter of 15 ⁇ m or more and had a light flavor.
  • the coffee filter paper manufactured in Comparative Example 1 had low drainage, and the filtration time of the coffee beverage was longer than the others.
  • the coffee beverage extracted using the coffee filter paper manufactured in Comparative Example 2 having a pore diameter ratio of 30 ⁇ m or more and about 25% had a large number of particles having a particle diameter of 30 ⁇ m or more and had a strong taste.
  • the coffee beverage extracted using the coffee filter paper manufactured in Examples 3 and 5 in which the pore diameter ratio of 15 ⁇ m or more is about 70% and the pore diameter ratio of 30 ⁇ m or more is about 20% is 30 ⁇ m or more.
  • the coffee beverage extracted using the coffee filter paper manufactured in Example 4 having a pore diameter ratio of 15 ⁇ m or more of about 45% and a pore diameter ratio of 30 ⁇ m or more of about 5% has a particle number of 15 ⁇ m or more. Although slightly less in flavor, the flavor was slightly light and the taste was little.
  • the coffee beverage extracted using the coffee filter paper manufactured in Examples 1 and 2 in which the pore diameter ratio of 15 ⁇ m or more is about 60% and the pore diameter ratio of 30 ⁇ m or more is about 15% is 15 ⁇ m or more and 30 ⁇ m or more.
  • the particle number was not too large or too small, the flavor was strong, the taste was little, and the coffee was delicious.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Apparatus For Making Beverages (AREA)
  • Paper (AREA)
  • Tea And Coffee (AREA)

Abstract

L'invention concerne un papier-filtre à café permettant l'extraction mécanique d'une boisson à base de café dotée d'un arôme authentique et dont les goûts indésirables sont réduits. Le papier-filtre à café selon l'invention présente un rapport de diamètres de pore supérieurs ou égaux à 15 μm qui est supérieur ou égal à 40 %, ainsi qu'un rapport de diamètres de pore supérieurs ou égaux à 30 μm qui est inférieur ou égal à 20 %.
PCT/JP2019/025072 2018-07-12 2019-06-25 Papier-filtre à café WO2020012946A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201980043261.2A CN112367883A (zh) 2018-07-12 2019-06-25 咖啡滤纸

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018131988A JP7168362B2 (ja) 2018-07-12 2018-07-12 コーヒー濾紙
JP2018-131988 2018-07-12

Publications (1)

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WO2020012946A1 true WO2020012946A1 (fr) 2020-01-16

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JP (1) JP7168362B2 (fr)
CN (1) CN112367883A (fr)
WO (1) WO2020012946A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113445365A (zh) * 2020-03-26 2021-09-28 杭州特种纸业有限公司 一种定量滤纸及其制备方法

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CN113445365B (zh) * 2020-03-26 2023-12-12 杭州特种纸业有限公司 一种定量滤纸及其制备方法

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Publication number Publication date
JP7168362B2 (ja) 2022-11-09
CN112367883A (zh) 2021-02-12
JP2020006064A (ja) 2020-01-16

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