WO2014097462A1 - Filtre d'extraction et sachet d'extraction - Google Patents

Filtre d'extraction et sachet d'extraction Download PDF

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Publication number
WO2014097462A1
WO2014097462A1 PCT/JP2012/083156 JP2012083156W WO2014097462A1 WO 2014097462 A1 WO2014097462 A1 WO 2014097462A1 JP 2012083156 W JP2012083156 W JP 2012083156W WO 2014097462 A1 WO2014097462 A1 WO 2014097462A1
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WO
WIPO (PCT)
Prior art keywords
extraction
bag
fine powder
thin film
filter
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PCT/JP2012/083156
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English (en)
Japanese (ja)
Inventor
亜希子 宮脇
充範 斎藤
Original Assignee
大紀商事株式会社
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Application filed by 大紀商事株式会社 filed Critical 大紀商事株式会社
Priority to PCT/JP2012/083156 priority Critical patent/WO2014097462A1/fr
Priority to PCT/JP2013/083799 priority patent/WO2014098097A1/fr
Priority to JP2014553163A priority patent/JP5860169B2/ja
Publication of WO2014097462A1 publication Critical patent/WO2014097462A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
    • B65D85/808—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package for immersion in the liquid to release part or all of their contents, e.g. tea bags

Definitions

  • the present invention relates to a beverage extraction filter and an extraction bag, and more particularly to an extraction filter and an extraction bag suitable for extraction of a beverage containing a fine powder of an extractable material such as green tea exhibiting moderate turbidity.
  • Green tea which is carefully extracted from high-quality tea leaves with hot water using a teapot, is known to have a high aroma, moderate bitterness and deliciousness. Moreover, the green tea carefully extracted in the teapot has a little turbidity because it contains fine powder of tea leaves, but the fine powder of tea leaves is said to be a factor in the taste of green tea.
  • extracting green tea using a teapot requires time and effort to dispose of the tea leaves after the extraction and washing the teapot.
  • fiber filters such as natural fibers and synthetic fibers can be used.
  • Patent Document 1 discloses that a water-soluble polymer compound such as polysaccharides or gelatin is attached to a filter made of nonwoven fabric or the like.
  • a tea bag filter is described in which the fiber gap is closed.
  • This filter for tea bags can prevent leakage of fine tea leaf powder filled and sealed in the tea bag because the fiber gap is closed in the dry state before use.
  • the water-soluble polymer compound that has blocked the fiber gap of the filter is dissolved in hot water, so that the fiber gap of the filter is opened and the tea leaf fine powder can be leaked to the outside.
  • this tea bag filter has a problem that the water-soluble polymer compound adhered to the filter is dissolved in the beverage, which may impair the flavor of the beverage.
  • Patent Document 2 discloses that a tea leaf fine powder having a controlled particle size is filled and sealed in a flat tea bag having a specific thickness, and a plurality of flat tea bags are provided.
  • Flat tea bags that can be stored in a packaging bag so that the tea powder is not easily leaked from the tea bag during transportation, and if the tea bag is immersed in water during extraction, the tea powder can be leaked. And its packaging.
  • the technique described in Patent Document 2 presses the flat tea bags in surface contact with each other and suppresses the movement of the fine tea leaf powder in the tea bag, thereby reducing the fine tea leaf from the tea bag during transportation. For example, when filling tea leaf fine powder in the tea bag manufacturing process or when storing a tea bag filled with tea leaf fine powder in a packaging bag, it is necessary to reduce the leakage of powder. There is a problem that powder leakage cannot be prevented.
  • the present invention has been made in view of the above problems, and when an extraction bag such as tea leaves is filled in an extraction bag or when an extraction bag filled with an extraction bag is transported.
  • Extraction of beverages that contain fine powder of the extract, such as green tea that can prevent leakage of the fine powder of the extract when it is not extracted, but can leak an appropriate amount of fine powder during extraction
  • An object is to provide a filter and an extraction bag.
  • the invention described in claim 1 of the present invention overlaps a thin film sheet that has been cut through the front and back with a coarse fiber sheet that has not been cut. It is a filter for extracting beverages containing fine powder of the extract.
  • the thin film sheet is a thin sheet made of a material that is difficult to pass through or does not pass through the fine powder of the extract such as tea leaves, for example, a sheet made of a fiber material such as woven fabric, nonwoven fabric, and paper.
  • the fiber gap is small, the fine powder of the extractable material that is liquid-permeable is difficult to pass through, or a synthetic resin film that is not liquid-permeable and does not allow the fine powder of the extractable material to pass through. It is a film-like sheet which uses as a raw material.
  • the coarse fiber sheet is a sheet made of fiber material such as woven fabric, non-woven fabric, paper, etc., and has a relatively large fiber gap, so that it has liquid permeability and allows fine powder of the extract to pass through. It is.
  • the thin film sheet is provided with notches penetrating the front and back.
  • the material constituting the thin film sheet is difficult to pass through the fine powder of the extraction object, or does not pass at all, so if the notch is in a closed state, it is difficult for the fine powder to pass through the thin film sheet.
  • the cut is in an expanded state, the fine powder can easily pass through the expanded portion.
  • the filter for extraction of the present invention is an embodiment in which the thin film sheet and the coarse fiber sheet are simply overlapped and are not adhered to each other. Therefore, the coarse fiber sheet to which no cut is attached is in a state of being supported in light contact with the thin film sheet having the cut.
  • the cuts made on the thin film sheet can be maintained in a substantially closed state.
  • the extraction filter of the present invention when a tensile force is applied by a conveying device or the like, the extraction bag is filled and sealed in the extraction bag made using the extraction filter, and the extraction filter is used. Even when the wall surface (extraction filter) of the bag is deformed, the cuts made on the thin film sheet are maintained in a substantially closed state.
  • the bag body filled with an extraction object such as tea leaves is sealed in hot water or water. Then, hot water and water flow into the bag body and are absorbed by the extraction object. At that time, since hot water and water have large specific gravity and generate resistance, they pass while expanding the cuts in the thin film sheet. As a result, the notch is expanded. Therefore, the fine powder contained in the substance to be extracted floats in the hot water or water that has flowed into the bag body, and the hot water or water convects and flows out of the bag body again through the expanded cut. When you do, it will leak along with hot water and water. In addition, since the comparatively big to-be-extracted substance which is not fine powder cannot pass a coarse fiber sheet, it does not leak from a bag main body irrespective of opening and closing of the cut
  • the extraction filter of the present invention is a beverage that has not been extracted, such as when an extraction bag is filled with an extract or when an extraction bag filled with the extract is transported. In some cases, it is possible to easily leak the fine powder during the extraction of the beverage, even though the leakage of the fine powder of the extract can be suppressed. Therefore, it is suitable as a filter for extracting beverages that contain fine powder of the extract, such as green tea that exhibits moderate turbidity.
  • the invention described in claim 2 is a beverage extraction filter comprising fine powder of the extract according to claim 1, wherein the thin film sheet and the coarse fiber sheet are overlapped and partially bonded. Partial adhesion between the thin film sheet and the coarse fiber sheet may be achieved by partially bonding the opposing surfaces of the two sheets overlapped by spotting or wire-attaching. It is desirable to arrange the cuts at positions and sizes that do not hinder the spread operation during beverage extraction. This is because, depending on the position and size of the bonding location, the degree of freedom of operation of the peripheral portion of the cut of the thin film sheet is hindered, and it may be difficult to expand the cut.
  • both sheets are integrated, so that the strength of the extraction filter is improved compared to the case where both sheets are simply superimposed, It is easy to handle when making the extraction bag. Moreover, the support effect
  • the method of partial adhesion between the thin film sheet and the coarse fiber sheet is not particularly limited.
  • the overlapping sheets can be partially welded by hot embossing. it can. It is also possible to perform partial adhesion by partially applying and pressing an adhesive between both sheets.
  • the invention described in claim 3 is a beverage extraction bag including a powder body to be extracted, comprising a bag body formed using the extraction filter according to claim 1 or 2.
  • a beverage extraction bag including a powder body to be extracted, comprising a bag body formed using the extraction filter according to claim 1 or 2.
  • the extract is finely powdered.
  • the bag body of the extraction bag of the present invention does not necessarily have to be made entirely using the extraction filter of the present invention, and may be partially made of other filters. .
  • the invention described in claim 4 uses the extraction filter according to claim 1 or 2 and is a bag made by forming a thin film sheet on the inner surface side and a coarse fiber sheet on the outer surface side. It is a bag for the extraction of the drink containing the fine powder of a to-be-extracted object provided with a main body.
  • the back body of such an extraction bag is a coarse fiber in which a thin-film sheet with cuts is arranged on the inner surface side that comes into contact with an object to be filled and sealed in the bag body, and the outer surface side is not cut. Since the sheet
  • the beverage when the beverage is not extracted, such as when the extraction bag is transported, some external force is applied to the bag body, and the thin film sheet disposed on the inner surface side is pressed against the filling and sealing object to be extracted. Even if it is deformed, the thin fiber sheet is supported by the coarse fiber sheet in contact with the surface from the outside, so the degree of deformation of the thin film sheet is mitigated, the notch is difficult to expand, and it remains almost closed Can do. Therefore, the leakage of the fine powder contained in the extract can be more effectively suppressed.
  • the extraction bag when a beverage is extracted using such an extraction bag, for example, when the bag body is immersed in hot water, the hot water flows into the bag body, but the thin film sheet on the inner surface side is a coarse fiber sheet on the outer surface side. Since it is located downstream from the inflow direction of hot water, it is difficult to receive a support action by the coarse fiber sheet. Therefore, since the cut of the thin film sheet is easily pushed out by the flowing hot water, the fine powder of the extraction object is easily leaked to the outside.
  • the extraction bag has a coarse fiber sheet on the outer surface that covers the thin film sheet on the inner surface side, so that it is difficult to see the cut of the thin film sheet from the outside. can do.
  • the filter for extraction according to claim 1, such as when filling the extraction bag into the extraction bag made using the filter, or transporting the extraction bag filled with the extraction bag, etc.
  • the fine powder can be easily leaked when the beverage is extracted, although the leakage of the fine powder of the extract can be suppressed. Therefore, it is suitable as a filter for extracting beverages containing a fine powder of an extract, such as green tea that exhibits moderate turbidity.
  • the filter for extraction according to claim 2 since the thin film sheet and the coarse fiber sheet are integrated by partial adhesion, the strength of the filter for extraction is improved, and when the bag for extraction is made, etc. Is easy to handle. Moreover, the support effect
  • the extraction bag described in claim 3 when the beverage is not extracted, such as when filling the body to be extracted or when carrying the extraction bag filled with the extraction object, Although the leakage of the fine powder of the extract can be suppressed, the fine powder can be easily leaked when the beverage is extracted. Therefore, it is suitable as an extraction bag for beverages containing fine powder of an extractable material such as green tea exhibiting moderate turbidity.
  • the coarse sheet supports the thin film sheet in surface contact from the outside, so that the incision of the thin film sheet is difficult to expand, and the fine powder of the extractables Can be effectively suppressed.
  • the fine powder of the extractables can be effectively suppressed.
  • the thin film sheet is not easily supported by the coarse fiber sheet, the cut of the thin film sheet can be easily expanded and the fine powder can be easily leaked. Therefore, it is suitable as an extraction bag for beverages containing a fine powder of an extract, such as green tea that exhibits moderate turbidity.
  • FIG. 5 is an explanatory diagram of a cross section taken along line AA of the extraction filter shown in FIG. 4. It is explanatory drawing showing the state at the time of extraction of the filter for extraction shown in FIG. It is explanatory drawing showing the form of the various cuts in the filter for extraction of this invention. It is explanatory drawing which shows the method of the extraction test by the bag for extraction of this invention.
  • the extraction filter 1 is an extraction filter suitable for extraction of beverages exhibiting moderate turbidity such as green tea, and the thin film sheet 2 and the coarse fiber sheet 3 are overlapped and formed in a long band shape.
  • the thin film sheet 2 and the coarse fiber sheet 3 are depicted as a rectangle and further shifted in an obliquely leftward direction.
  • the beverage to be extracted by the extraction filter 1 is not limited to green tea, but includes a wide variety of foods and medicines for drinking.
  • the extraction filter 1 is suitable for extracting tea leaves such as black tea, hojicha, oolong tea, chuchucha, barley tea, flower tea, coffee powder, bonito and bonito, etc. Can be used widely.
  • tea leaves such as black tea, hojicha, oolong tea, chuchucha, barley tea, flower tea, coffee powder, bonito and bonito, etc.
  • tea leaves such as black tea, hojicha, oolong tea, chuchucha, barley tea, flower tea, coffee powder, bonito and bonito, etc.
  • delicious green tea that is moderately turbid contains tea leaf fine powder having a particle size of about 500 ⁇ m or less, and among them, a relatively large amount is about 150 to 500 ⁇ m. It is.
  • the thin film sheet 2 is a thin sheet made of a material that is difficult to pass or does not pass through fine powder such as tea leaves, and is constituted by a fine fiber sheet or a film-like sheet. Further, the thin film sheet 2 is formed with a cut 4 penetrating the front and back.
  • the cuts 4 of the present embodiment shown in FIG. 1 are X-shaped with a size that can fit into a grid with a side of 10 mm, and a large number of them are regularly arranged at almost equal intervals.
  • the fine fiber sheet constituting the thin film sheet 2 is a sheet made of a fiber material such as a woven fabric, a non-woven fabric, or a paper in which synthetic fibers or natural fibers are interwoven or entangled and formed into a thin sheet as a whole.
  • the maximum pore diameter of the fiber gap is preferably 200 ⁇ m or less. This is because such a relatively small fiber gap can considerably suppress the passage of fine powder such as tea leaves.
  • the fine fiber sheet is a non-woven fabric
  • the fineness is preferably 4.0 denier or less, and the basis weight is 3 to 50 g / m 2 from the viewpoint of the function of suppressing the passage of fine powder such as tea leaves and the cost reduction. 2 is preferred.
  • the material of the nonwoven fabric include polyolefin fibers such as polyethylene, polypropylene and copolymer polypropylene, polyester fibers such as polyethylene terephthalate, copolymer polyester and aliphatic polyester, polylactic acid, polybutylene succinate, polyethylene succinate and aliphatic.
  • Short fibers or long fibers such as polyester or aromatic polyester biodegradable fibers can be used, and the sheath is made of polyethylene, polypropylene, copolymer polyester, aliphatic polyester, etc., and the core is made of polypropylene, polyethylene terephthalate, etc.
  • a composite fiber having a core-sheath structure can be used.
  • it does not specifically limit as a manufacturing method of this nonwoven fabric The well-known spun bond method, the melt blow method, the needle punch method, the spun lace method, the airlaid method, the carding method etc. are applicable.
  • polyester fibers such as polyethylene terephthalate, copolymer polyester, and aliphatic polyester, polyolefin fibers such as polyethylene, polypropylene, and copolymer polypropylene, polylactic acid, aliphatic polyester, and aromatic polyester Biodegradable fibers of the system can be preferably used.
  • monofilaments, multifilaments, core-sheath composite fibers in which two types of resins are combined, spun yarns, and the like can be used as the form of the woven yarn.
  • the film-like sheet constituting the thin-film sheet 2 is a synthetic resin film formed by thinly extending a heat-melted synthetic resin or a synthetic fiber sheet such as a nonwoven fabric by hot pressing to form a fiber gap.
  • a sheet made of a synthetic resin film or the like that is almost closed, and generally has no through-holes, and therefore does not allow liquid or fine powder such as tea leaves to pass through.
  • a material for such a film-like sheet a material excellent in hot water resistance is preferable.
  • polyolefin resins such as polyethylene, polypropylene and copolymer polypropylene
  • polyester resins such as polyethylene terephthalate, copolymer polyester and aliphatic polyester
  • polyamide Resin polystyrene resin
  • polylactic acid / polybutylene succinate / polyethylene succinate / aliphatic polyester-based or aromatic polyester-based biodegradable resin can be used.
  • the thin film sheet 2 of the embodiment shown in FIG. 1 is a fine fiber sheet made of melt blown nonwoven fabric, the material is polyethylene terephthalate, the fineness is 0.6 denier, the basis weight is 5 g / m 2 , and the maximum pore diameter of the fiber gap is 120 ⁇ m.
  • the maximum opening diameter of the fiber gap in the present invention is a value measured by a bubble point method (JIS K 3832). Specifically, the sample is immersed in 2-propanol so that 2-propanol is contained in all the pores of the sample by capillary action, and then air pressure is gradually applied from the lower surface side of the sample. The gas pressure is measured when the pressure exceeds the liquid surface tension in the pores and bubbles are generated. Since the bubble is initially generated from the maximum aperture diameter portion, the maximum aperture diameter can be calculated by measuring the gas pressure at that time.
  • the coarse fiber sheet 3 of the extraction filter 1 is a sheet made of a fiber material such as a woven fabric, a non-woven fabric, or a paper in which synthetic fibers or natural fibers are interwoven or entangled to form a thin sheet as a whole.
  • the fiber gap since the fiber gap is relatively large, it has liquid permeability and allows fine powder such as tea leaves to pass through.
  • the maximum aperture diameter of the fiber gap of the coarse fiber sheet is larger than the maximum aperture diameter of the fine fiber sheet and is 150 to 500 ⁇ m, although it depends on the size of fine powder such as tea leaves to be passed. preferable.
  • the coarse fiber sheet 3 has a breaking strength necessary for making an extraction bag, and from the viewpoint of reducing the cost, when the coarse fiber sheet 3 is a woven cloth wrinkle, a fineness of 15 to The denier is preferably 40 denier and the basis weight is 10 to 40 g / m 2.
  • the fineness is preferably 1.2 to 8 denier and the basis weight is 10 to 40 g / m 2 .
  • the material of the bag or the nonwoven fabric the fine fiber sheet constituting the thin film sheet 2 and substantially the same synthetic fiber can be used. However, in order to obtain a high heat seal strength when an extraction bag is made. In addition, it is preferable to employ a material having good welding compatibility with the thin film sheet 2. Moreover, if materials having different melting points are employed as the material of the thin film sheet 2 and the coarse fiber sheet 3, only the sheet having a low melting point is melted and functioned as an adhesive during the heat sealing process. Can be carried out easily and reliably.
  • the coarse fiber sheet 3 of the embodiment shown in FIG. 1 is a cocoon
  • the material of the weaving yarn is polyethylene terephthalate / low melting point polyester
  • the fineness is 25 denier
  • the basis weight is 21 g / m 2
  • the maximum pore size of the fiber gap is 220 ⁇ m.
  • the extraction filter 1 shown in FIG. 1 is a mode in which the thin film sheet 2 and the coarse fiber sheet 3 are simply overlapped and are not adhered to each other. Therefore, the coarse fiber sheet 3 not provided with the cuts is in a state of lightly contacting and supporting the thin film sheet 2 provided with the cuts 4. Therefore, since various physical effects applied from the outside to the thin film sheet 2 are alleviated by the coarse fiber sheet 3, the cuts 4 given to the thin film sheet can be maintained in a substantially closed state. For example, when a tensile force is applied by a conveying device or the like during the manufacture of the extraction filter 1, or the extraction bag 5 made by using the extraction filter 1 is filled and sealed with an extractable material for extraction. Even when the wall surface (extraction filter) of the bag 1 is deformed, the cut 4 given to the thin film sheet 2 is maintained in a substantially closed state.
  • a continuous long extraction filter 1 is used as a raw fabric, and this is sequentially cut and joined by a known bag making and filling device, It can be manufactured by filling and sealing the extractables.
  • the extraction bag 5 is picked up with a fingertip when using the extraction filter 1 shown in FIG. 1 to form a tetragonal (tetrahedral) bag body 6 and the extraction bag 5.
  • Tag 8 and a hanging thread 7 having one end bonded to one apex portion of the bag body 6 and the other end bonded to the tag 8.
  • the bag body 6 is formed by placing the thin film sheet 2 of the extraction filter 1 on the inner surface side and the coarse fiber sheet 3 on the outer surface side, and the bag body 6 has an object to be extracted (not shown). Is filled and sealed.
  • tea leaves for green tea and fine powder of tea leaves are filled and sealed as the extract.
  • the bag making method of the bag body 6 is not particularly limited.
  • the extraction filter 1 in which a continuous long thin film sheet 2 and a coarse fiber sheet 3 are preliminarily stacked is used as a raw fabric, and this is used for filling a known bag.
  • the apparatus may be used to form a bag by sequentially cutting and joining, and then filling and sealing tea leaves and tea leaf fine powder.
  • the continuous long thin film sheet 2 and the coarse fiber sheet 3 can be simultaneously set in the bag making and filling device, and the two sheets can be stacked to form a bag.
  • the joining method at the time of bag making can be heat sealing, fusing sealing, ultrasonic sealing, high frequency sealing and the like.
  • the form of the extraction bag 5 is not limited to that shown in FIG. 2.
  • the shape of the bag body 6 may be a pyramid shape or a flat bag shape. Also good.
  • the bag body 6 of the extraction bag 5 has a coarse fiber sheet 3 disposed on the outer surface side and a thin film sheet 2 disposed on the inner surface side.
  • the coarse fiber sheet 3 is in a state of supporting the thin film sheet 2 with the cuts 4 while lightly contacting the surface so as to cover from the outside. Therefore, before use of the extraction bag 5, that is, before extraction of green tea, for example, some external force is applied to the bag body 6 during transportation, and the thin film sheet 2 on the inner surface side is pressed against the filled and sealed tea leaves. Even when the thin film sheet 2 is deformed, the coarse fiber sheet 3 supports the thin film sheet 2 from the outside.
  • the degree of deformation of the thin film sheet 2 is alleviated, and the notch 4 is difficult to expand and maintains a substantially closed state. obtain. Therefore, leakage of tea leaf fine powder can be effectively suppressed. Further, in the extraction bag 5, since the coarse fiber sheet 3 on the outer surface side of the bag body 6 covers the thin film sheet 2 on the inner surface side, the cut 4 of the thin film sheet 2 is difficult to see from the outside. It is neat and beautiful.
  • the tea leaf fine powder floats in the hot water flowing into the bag body 6, and when the hot water convects and passes through the expanding portion 9 and flows out of the bag body 6 again, It will leak out. Further, if the fingertip having the tag 8 is moved up and down to shake the bag body 6 in the hot water to cause turbulent flow in the hot water inside and outside the bag main body 6, more tea leaf fine powder can be leaked. In addition, since the tea leaves larger than the tea leaf fine powder cannot pass through the coarse fiber sheet 3, they do not leak out from the bag body 6 regardless of opening and closing of the cuts 4 of the thin film sheet 2.
  • the extract to be filled and sealed in the bag body 6 of the extraction bag 5 is preferably a green tea leaf that is desired to exhibit moderate turbidity as described above, but is not limited thereto, and is a solvent such as hot water or water. It can be widely applied to foods and medicines that are extracted from and used for drinking.
  • the extract is tea leaves for green tea, it is possible to use only general tea leaves that have been cut and dried to a size of a few millimeters to a few tens of millimeters, but increase the degree of turbidity of green tea. Therefore, in order to shorten the extraction time, a tea leaf fine powder produced separately may be added.
  • the extraction filter 1 shown in FIG. 4 is formed in a long band shape by laminating a thin film sheet 2 and a coarse fiber sheet 3 as in the embodiment shown in FIG.
  • the thin film sheet 2 is the same melt blown nonwoven fabric as that of the embodiment of FIG. 1, but the cut 4 formed through the front and back is a straight line having a length of about 12 mm formed along the longitudinal direction of the extraction filter 1. It has a shape, and a large number are regularly arranged at almost equal intervals.
  • the coarse fiber sheet 3 is also the same ridge as the embodiment of FIG.
  • the extraction filter 1 of this embodiment since the thin film sheet 2 and the coarse fiber sheet 3 are partially bonded and integrated, the strength is high, and the mechanical suitability in the bag making process of the extraction bag 5 is improved. It is excellent and easy to handle. Furthermore, since the notch 4 of the thin film sheet 2 is formed in a straight line shape along the longitudinal direction of the extraction filter 1, for example, in the bag making process of the extraction bag 5, the extraction filter 1 is in the longitudinal direction. , The incision 4 is unlikely to expand due to friction or catching with the conveyance path or due to a tensile force applied in the longitudinal direction of the extraction filter 1.
  • the simplest form of the notch 4 can be the X shape shown in FIG. 1 or the straight shape shown in FIG. 4, but is not limited thereto.
  • the form can be appropriately changed in order to adjust the amount of the fine powder of the extract to be leaked at the time of beverage extraction or to improve the design of the extraction bag. Examples of such forms are shown in FIGS. 7 (a) to (e).
  • the notch 4 shown in (a) is a form in which three linear notches are combined in a radial shape.
  • the notch 4 shown in (b) is a form in which three linear notches are combined in an H shape.
  • the notch 4 shown in (c) is a waveform form represented by a curve.
  • the notch 4 shown in (d) is a waveform form represented by a straight line.
  • the notch 4 shown in (e) is a form in which long and short five linear notches are arranged in parallel.
  • Example samples A and B of two types of extraction bags 5 were manufactured using the extraction filter 1 of the embodiment shown in FIG.
  • the extraction filter 1 of the embodiment shown in FIG. 1 is obtained by overlapping the thin film sheet 2 and the coarse fiber sheet 3 without adhering to each other as described above.
  • the thin film sheet 2 is a fine fiber sheet made of a melt blown nonwoven fabric.
  • the material is polyethylene terephthalate, the fineness is 0.6 denier, the basis weight is 5 g / m 2 , and the maximum opening diameter of the fiber gap is 120 ⁇ m.
  • a large number of X-shaped cuts that are large enough to fit into a 10 mm side mesh that penetrates are regularly arranged.
  • the coarse fiber sheet 3 is cocoon
  • the material of the weaving yarn is polyethylene terephthalate / low-melting polyester
  • the fineness is 25 denier
  • the basis weight is 21 g / m 2
  • the maximum pore size of the fiber gap is 220 ⁇ m.
  • Samples A and B both have a tetra-shaped bag body 6 having a height of 50 mm, a hanging thread 7 having one end bonded to one apex of the bag body 6, and a tag 8 bonded to the other end of the hanging thread 7.
  • the bag body 6 is filled and sealed with about 2 g of green tea leaves containing about 10% of fine powder having a particle diameter of 500 ⁇ m or less.
  • the difference between sample A and B is the configuration of the wall of the bag body 6, and the bag body 6 of sample A has the thin film sheet 2 with the cutout 4 of the extraction filter 1 disposed on the inner surface side, The coarse fiber sheet 3 that is not cut is placed on the outer surface side to make a bag.
  • the bag body 6 of the sample B is placed on the inner surface side that is not cut.
  • the thin film sheet 2 provided with the cuts 4 is disposed on the outer surface side and is formed into a bag.
  • Example of the above extraction bag In place of the extraction filter 1 in the sample A, only the thin film sheet 2 provided with X-shaped cuts is used, and the other examples are the same as in the sample A. Sample C was made. In addition, instead of the thin film sheet 2 provided with the X-shaped cut in the comparative sample C, the same thin film sheet is used except that no cut is provided, and the other is the same as the sample C, and the extraction bag Comparative sample D was prepared. Further, in place of the extraction filter 1 in the example sample A, only the coarse fiber sheet 3 was used, and the other example of the extraction bag was prepared in the same manner as the sample A.
  • the test method is to suspend the suspension thread 7 of each sample fixed to the vibration part of a sieve tester (manufactured by IKA Labortechnik, model HS501), apply 125 Hz vibration in a fixed direction for 3 minutes, and leak from the bag body 6 The mass of the tea leaf fine powder dropped was measured.
  • the test results are shown in Table 1.
  • the same two kinds of example samples as the first test and three kinds of comparative examples are used to examine the leakage amount of the tea leaf fine powder from the bag body 6 at the time of green tea extraction. Went.
  • the bag body 6 of each sample is immersed in a water tank (beaker) 11 containing 200 ml of hot water 12 having a temperature of 90 ° C., and the bag body 6 is rotated clockwise three times.
  • the bag main body 6 was taken out from the hot water 12 after rotating counterclockwise three times and further shaking up and down 10 times.
  • the obtained green tea was observed with the naked eye, and the obtained green tea was further filtered to separate and collect the tea leaves and the tea leaf fine powder contained in the green tea, and the mass was measured after drying.
  • Table 1 The test results are shown in Table 1.
  • Example Sample A no leakage of tea leaf fine powder was observed when not extracted, and green tea exhibiting moderate turbidity was obtained during extraction, with the best results among all samples. there were. Further, in Example Sample B, a slight leakage of tea leaf powder was observed when not extracted, but green tea exhibiting moderate turbidity was obtained during extraction, and there was no practical problem. On the other hand, in the comparative sample C, a large amount of the mixture of tea leaves and tea leaves leaked both at the time of non-extraction and at the time of extraction, which was a very undesirable result.
  • tea leaf fine powder does not leak when unextracted and is good, but tea leaf fine powder leaks only slightly during extraction, and the obtained green tea is almost transparent and almost free of turbidity. This was an undesirable result. Furthermore, in Comparative Example Sample E, the amount of leakage of tea leaf fine powder when not extracted was large, which was an undesirable result.
  • the present invention includes a fine powder of the extract that can suppress the leakage of the fine powder of the extract when the beverage is not extracted, and can extract an appropriate amount of the fine powder of the extract when the beverage is extracted. It is useful as a beverage extraction filter and an extraction bag.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Apparatus For Making Beverages (AREA)

Abstract

La présente invention a pour but de concevoir un filtre d'extraction et un sachet d'extraction pour une boisson comprenant une poudre fine d'une substance à extraire telle que du thé vert, avec lesquels une distribution de la poudre fine de la substance à extraire est impossible si ce n'est lors de l'extraction, par exemple lors du remplissage du sachet d'extraction avec la substance à extraire telle que des feuilles de thé, ou lors du transport des sachets d'extraction remplis de la substance à extraire et scellés, et avec lesquels une quantité appropriée de la poudre fine est distribuée lors de l'extraction. A ces fins, dans ce filtre d'extraction, une feuille mince comportant des incisions perforant une surface arrière de celle-ci est placée de manière à chevaucher une feuille à fibres grossières ne comportant pas d'incisions. En outre, ce sachet d'extraction comporte un corps principal de sachet formé au moyen du filtre d'extraction.
PCT/JP2012/083156 2012-12-20 2012-12-20 Filtre d'extraction et sachet d'extraction WO2014097462A1 (fr)

Priority Applications (3)

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PCT/JP2012/083156 WO2014097462A1 (fr) 2012-12-20 2012-12-20 Filtre d'extraction et sachet d'extraction
PCT/JP2013/083799 WO2014098097A1 (fr) 2012-12-20 2013-12-17 Sachet d'extraction
JP2014553163A JP5860169B2 (ja) 2012-12-20 2013-12-17 抽出用バッグ

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PCT/JP2012/083156 WO2014097462A1 (fr) 2012-12-20 2012-12-20 Filtre d'extraction et sachet d'extraction

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2016159266A1 (ja) * 2015-04-03 2017-11-16 旭化成株式会社 単層又は複層ポリエステル長繊維不織布及びそれを用いた食品用フィルター
JP2018518964A (ja) * 2015-07-16 2018-07-19 ユニリーバー・ナームローゼ・ベンノートシヤープ 飲料前駆体

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6386681B1 (ja) * 2018-01-10 2018-09-05 日本紙工株式会社 フィルター成型品の製造方法
JP6410383B1 (ja) * 2018-01-19 2018-10-24 日本紙工株式会社 フィルター成型品の製造方法
JP6470463B1 (ja) * 2018-09-11 2019-02-13 日本紙工株式会社 原料通水性に優れたティーバッグ

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US2157656A (en) * 1937-06-23 1939-05-09 Ralph N Doble Tea bag, coffee bag, and the like
US2193974A (en) * 1938-07-13 1940-03-19 Luckhaupt Christopher Package for infusing material
DE3420128A1 (de) * 1984-05-30 1985-12-05 geb. Woitzik Helga 8414 Maxhütte-Haidhof Lischka Kraeuterpackung
JPH0210262U (fr) * 1988-06-23 1990-01-23
JPH03229606A (ja) * 1989-08-01 1991-10-11 Yamanaka Sangyo Kk コーヒーフィルター材料およびコーヒーフィルターバッグ
JP2004089543A (ja) * 2002-09-02 2004-03-25 Ito En Ltd ティーバッグ用紙フィルター
WO2009128493A1 (fr) * 2008-04-18 2009-10-22 大紀商事株式会社 Feuille fibreuse

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JPS5227913Y2 (fr) * 1974-12-24 1977-06-24
JPH05139472A (ja) * 1991-11-12 1993-06-08 Morinaga Milk Ind Co Ltd 茶葉包装体
CA2245995A1 (fr) * 1997-10-23 1999-04-23 Societe Des Produits Nestle S.A. Sachet de the pour la preparation de the glace

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Publication number Priority date Publication date Assignee Title
US2157656A (en) * 1937-06-23 1939-05-09 Ralph N Doble Tea bag, coffee bag, and the like
US2193974A (en) * 1938-07-13 1940-03-19 Luckhaupt Christopher Package for infusing material
DE3420128A1 (de) * 1984-05-30 1985-12-05 geb. Woitzik Helga 8414 Maxhütte-Haidhof Lischka Kraeuterpackung
JPH0210262U (fr) * 1988-06-23 1990-01-23
JPH03229606A (ja) * 1989-08-01 1991-10-11 Yamanaka Sangyo Kk コーヒーフィルター材料およびコーヒーフィルターバッグ
JP2004089543A (ja) * 2002-09-02 2004-03-25 Ito En Ltd ティーバッグ用紙フィルター
WO2009128493A1 (fr) * 2008-04-18 2009-10-22 大紀商事株式会社 Feuille fibreuse

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2016159266A1 (ja) * 2015-04-03 2017-11-16 旭化成株式会社 単層又は複層ポリエステル長繊維不織布及びそれを用いた食品用フィルター
CN107429459A (zh) * 2015-04-03 2017-12-01 旭化成株式会社 单层或多层聚酯长纤维无纺布以及使用其的食品用过滤器
JP2018518964A (ja) * 2015-07-16 2018-07-19 ユニリーバー・ナームローゼ・ベンノートシヤープ 飲料前駆体

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