JP2009060826A - Flat-type tea bag and packaged body thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flat-type tea bag enabling cold water extraction, enabling tea with good feeling at drinking to be prepared easily, facilitating the treatment, enabling the tea to be regulated to a desired strength, and enabling nutritional elements of tea leaves to be ingested exhaustively, and to provide a packaged body thereof. <P>SOLUTION: The flat-type tea bag 1 has a flat-type bag part 30 having a closed space between an upper cloth 35 and a lower cloth 34 comprising plane-shaped nonwoven fabric, and tea leaf fine powder 20 stored in the bag part 30 so as to be uniformly distributed within the range of 0.01-0.05 g/cm<SP>2</SP>surface density in the interior of the closed space, and having a particle diameter distribution in which ≥90% is in the range of 10-300 μm. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a flat tea bag containing green tea, black tea, oolong tea and other tea leaf powder and its package, and more particularly, tea leaf ingredients that are easy to drain water, are less likely to become dusty, and have high nutritional value. The present invention relates to a flat tea bag that can be taken in all the way and its package.

  Tea extraction by a teapot or the like is generally performed by putting tea leaves or the like into a container such as a teapot and pouring hot water or the like. After that, it is a time corresponding to the used tea leaves, and is usually allowed to stand for several tens of seconds to several minutes. At this time, the tea leaves are fully opened and steamed in the teapot. The tea extracted in this way has a good color, aroma and taste.

  In addition, the tea leaves can be easily extracted by using the tea leaves enclosed in the tea bag, and the disposal of the tea leaves after the extraction becomes easy. In recent years, it has been known that tea leaf fine powder is dissolved in water or hot water as it is in order to ingest all the nutrition of the tea leaf (see Patent Document 1).

JP 2002-125593 A

  However, when the teapot or tea bag described above is used, tea leaves generally need to be extracted with hot water, and cannot be drunk in places where hot water cannot be prepared. In recent years, products that can be extracted with water at room temperature are also commercially available. For example, hot water can be extracted in about 20 seconds, while water at 25 ° C. requires about 240 seconds of extraction time. It is not possible. In addition, the trouble of washing the teapot after extraction and the trouble of disposing of it are easier than in the case of extracting with a teapot, but garbage such as tea bags containing used tea leaves is generated. Also, in order to drink cold tea, it is necessary to cool it after extracting it with hot water. Furthermore, there were various problems that the nutrients of tea leaves were discarded without being extracted.

  Also, when the tea leaves fine powder (crushed tea) described in Patent Document 1 is melted and drunk as it is, it is often thought that if you have a bowl, you can enjoy the tea easily anywhere. Even if you try to fine-tune the intensity of the drink, it often fails. Moreover, even if it melt | dissolves, measuring with a measuring spoon etc. in containers, such as a hot water drink and an empty bottle, variation may arise. Further, in many cases, the tea leaf fine powder lump (a lump of tea leaf fine powder not dissolved in water) is caused, which is a cause of extreme deterioration in aesthetics and taste. In the event that lumps occur, it must be melted using tea or by shaking the bottle. However, lumps were left undissolved, making the aesthetics and taste extremely worse.

  The present invention has been made in view of the above-mentioned problems, can be drained, can easily prepare tea with good throat, can be easily handled and can be easily adjusted to the desired strength, An object of the present invention is to provide a flat tea bag and a packaged body thereof that can be ingested without excessive nutritional components.

  In order to achieve the above object, the present invention provides the following flat tea bag and its package.

[1] A flat bag portion having a closed space between an upper cloth and a lower cloth made of a planar nonwoven fabric, and a surface density within a range of 0.01 to 0.05 g / cm ² inside the closed space. A flat tea bag comprising: tea leaf fine powder that is contained in the bag portion so as to be uniformly distributed, and 90% or more of the particle size distribution is in the range of 10 to 300 μm.

  [2] The flat tea bag according to [1], wherein the bag portion has a thickness of 0.20 to 1.00 mm when the tea leaf fine powder is accommodated.

[3] The flat tea bag according to [1] or [2], wherein the basis weight of the nonwoven fabric is 15 to 35 g / m ² .

[4] The non-woven fabric is partially impregnated with tea leaf fine powder by embossing and the area of 1.0 to 4.0 mm ² of tea leaf fine powder hardly permeable region is equally spaced from 0.5 to 2.0 mm. The flat tea bag according to any one of [1] to [3].

  [5] The flat tea bag according to any one of [1] to [4], wherein the fibers constituting the nonwoven fabric are biodegradable plastics.

  [6] A flat container having an opening / closing part that can be opened and closed in an airtight manner and having a longitudinal or lateral dimension that is 5 to 30 mm longer than the flat tea bag according to any one of [1] to [5]. And at least one or a plurality of the stacked flat tea bags stored in the storage portion, the flat tea bag storing the open / close portion in the closed state. Flat tea bag package held by the inner wall of the section.

  The flat tea bag of the present invention accommodates fine tea leaf fine powder that can permeate this non-woven fabric in a flat and uniform shape within a flat bag portion made of a non-woven fabric. It is easy to drain water, and the tea leaf fine powder is less likely to become lumpy, and it is possible to take in all the tea leaf components with high nutritional value. Furthermore, the flat tea bag of the present invention also contributes to the reduction of waste after use in consideration of environmental problems. In addition, by laminating this flat tea bag and storing it in a package with a container slightly larger than the size of the flat tea bag, the flat tea bag is held so that the inner wall of the package presses down, It is possible to prevent scattering of tea leaf fine powder to the outside of the flat tea bag due to vibration, deformation, etc. during transportation, and uneven distribution of tea leaf fine powder inside the flat tea bag. In addition, it can be visually confirmed that the tea leaf powder melts out of the flat tea bag, and the tea leaf powder melts almost without any residue, which stimulates consumers' willingness to purchase as a novel tea leaf drinking style that has never been seen before. There is an effect.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will be described below, but the present invention is not limited to the following embodiment, and is based on the ordinary knowledge of those skilled in the art without departing from the gist of the present invention. It should be understood that modifications and improvements as appropriate to the following embodiments also fall within the scope of the present invention.

  In the present invention, tea leaves include not only leaves but also all raw materials for extracting so-called broad teas such as plant flowers, fruits, roots, stems, grains, and beans.

  A method for producing the tea leaf fine powder is not particularly limited, and known methods such as a stone mill type, a ball mill, a jet mill, a pin mill, and a cutter type crusher can be used. As for the particle size of the tea leaf fine powder, about 15 μm (used for green tea etc.) when using the flat mill type, and about 300 μm (used for cooking etc.) tea leaf fine powder when using a cutter type crusher can get. Further, commercially available powdered tea has a particle size of 20 μm, and powdered tea in powder form includes tea leaf fine powder having a particle size of 10 μm.

  As the range of the particle size of the tea leaf fine powder, 90% or more of the particle size distribution is preferably in the range of 10 to 300 μm, more preferably 95% of the particle size distribution is in the range of 10 to 300 μm, It is particularly preferred that 100% of the distribution is in the range of 10 to 300 μm. When the tea leaf powder having a small particle size in the above-mentioned range is directly poured into a cup such as a cup of water or an empty bottle while being measured with a measuring spoon or the like, it is often difficult to make the desired amount and it is often tedious. However, the tea leaf fine powder 20 is accommodated in the flat tea bag 1 of the present invention in a substantially uniform state so that it can be easily adjusted to the desired strength and is less likely to become lumpy.

  An embodiment of a flat tea bag according to an embodiment of the present invention is shown in FIGS. FIG. 1 is a plan view of a flat tea bag according to an embodiment of the present invention. 2 is a cross-sectional view of the flat tea bag according to the embodiment of the present invention taken along the line XX in FIG.

  As shown in FIG. 2, the flat tea bag 1 according to an embodiment of the present invention includes a bag portion 30 mainly composed of an upper cloth 35 and a lower cloth 34 made of a planar nonwoven fabric, and the bag portion 30. It comprises tea leaf fine powder 20 housed inside. The bag portion 30 is a flat closed space formed by thermal welding such as ultrasonic welding at an edge portion 36 between the upper cloth 35 and the lower cloth 34 in a state where the upper cloth 35 and the lower cloth 34 are overlapped. Have. The tea leaf fine powder 20 is accommodated almost uniformly in a planar shape inside a flat closed space inside the bag portion 30. The edge portion 36 does not necessarily have to be heat-welded, and may be a fold portion or a folded portion in which a closed space is formed. For example, a nonwoven fabric in which the upper fabric 35 and the lower fabric 34 are integrated is used, and the nonwoven fabric is folded back in half to form the upper fabric 35 and the lower fabric 34. The edges 36 can also be formed by heat welding the sides.

  Moreover, it is preferable that the thickness of the bag part 30 (flat tea bag 1) in the state which accommodated the tea leaf fine powder 20 in the flat tea bag 1 exists in the range of 0.20-1.00 mm. When the tea leaf fine powder 20 is distributed in a planar shape along the shape of the flat tea bag 1, the tea leaf fine powder 20 starts to melt immediately from the entire surface of the bag portion 30 when it is poured into the water and stirred to drain water. Water can be drained. Moreover, the nonwoven fabric which comprises the bag part 30 generally has high water permeability, and can drain water easily. Although it does not specifically limit as a dimension of this bag part 30, For example, the bag part 30 can be comprised using the nonwoven fabric of length x 7cm. Moreover, it is preferable to select the shape as appropriate according to the amount and type of tea leaf powder and the application.

  The definition of the nonwoven fabric used for the bag portion 30 of the flat tea bag of the present invention is a fiber sheet, web or bat defined in JIS L0222, in which fibers are unidirectionally or randomly oriented, alternating current, and / or Alternatively, the fibers are bonded by fusion and / or adhesion. However, paper, woven fabric, knitted fabric, tufts and contracted felt are excluded.

  The type of nonwoven fabric used for the bag portion 30 of the flat tea bag of the present invention is not particularly limited, but from the viewpoint of safety, it is based on thermal welding such as spunbond or thermal bond which hardly uses an adhesive. Those are preferred. As the fibers constituting the nonwoven fabric, it is preferable to use materials suitable for the configuration of the nonwoven fabric and various production methods. The use of a biodegradable plastic as the fiber constituting the nonwoven fabric is preferable from the viewpoint of environmental issues.

Preferably the weight per unit area as the nonwoven fabric used for the bag portion 30 of the flat tea bag 1 according to an embodiment of the present invention is 15 to 35 g / ^{m 2,} more preferably 20 to 30 g / ^{m 2.} In this case, the basis weight of the nonwoven fabric is measured by a method according to JIS L-1906. Moreover, as thickness of a nonwoven fabric, it is preferable that it is 0.09-0.25 mm, and it is still more preferable that it is 0.14-0.21 mm.

  FIG. 5 shows a partially enlarged cross-sectional view of the region C in the schematic cross-sectional view of the flat tea bag 1 according to the embodiment of the present invention in FIG. Since the bag part 30 consists of a nonwoven fabric and the inner wall of the nonwoven fabric has raised as shown in FIG. 5, the tea leaf fine powder 21 is hold | maintained between the fibers 33 raised so that it might get entangled. When the flat tea bag 1 of the present invention is stored, the tea leaf fine powder 21 is taken into the raised fibers 33, and even if the flat tea bag 1 is subjected to a load or deformation, the distribution state of the tea leaf fine powder 21 therein is maintained. Uniformity can be maintained.

  FIG. 3 shows a partially enlarged schematic view of region A of the flat tea bag according to the embodiment of the present invention in FIG. Moreover, the partial expansion schematic diagram of the area | region D of the flat tea bag which concerns on one Embodiment of this invention in FIG. 3 is shown in FIG. 3 and 4 show a case where the tea leaf fine powder hardly permeable region 31 is circular as one embodiment of the present invention. Nonwoven fabrics have many gaps between fibers constituting the nonwoven fabric, and generally have high water permeability. When using a non-woven fabric in which the gaps between fibers are larger than the particle size of the tea leaf powder, the tea leaf powder can be drained easily when draining water. It is also necessary to devise a solution that melts.

  The non-woven fabric used in the flat tea bag 1 of the present invention as shown in the region A shown in FIG. 3 is circular, square, textured, latticed as the tea leaf fine powder hardly permeable region 31 by embossing or heat welding. By improving the strength of the nonwoven fabric and partially lowering the permeability of tea leaf powder and water by forming any one of a shape, polka dot pattern, polygonal shape, etc., or a combination thereof on the entire surface at equal intervals It can prevent the tea leaf powder from melting at once. As shown in FIG. 4, the tea leaf fine powder permeable region 32 has many gaps between the fibers 33 constituting the nonwoven fabric, and has high permeability of water and tea leaf fine powder. On the other hand, the poorly permeable region 31 of tea leaf fine powder is welded at a portion where the fibers overlap with each other by embossing or heat welding, and the distance between the fibers becomes narrow, and the tea leaf fine powder is clogged. Easy and low permeability.

The diameter L1 of the tea leaf fine powder hardly permeable region 31 in the nonwoven fabric used for the flat tea bag 1 according to the embodiment of the present invention as shown in the region D shown in FIG. It is preferable that the value be 0.0 to 4.0 mm ² . This value is a case where the tea leaf fine powder poorly permeable region 31 is circular as one embodiment of the present invention. As another embodiment, when the tea leaf fine powder hardly permeable region 31 has a square shape, a textured shape, a lattice shape, a polka dot pattern, a polygonal shape, or the like, the tea leaf fine powder hardly permeable region 31 and the tea leaf fine powder permeable region 32 are used. May be the same as the area ratio in the case where the above-described tea leaf fine powder poorly permeable region 31 is circular.

  Moreover, the space | interval L2 of the tea leaf fine powder hardly permeable area | region 31 in the nonwoven fabric used for the flat tea bag 1 which concerns on one Embodiment of this invention like the area | region D shown in FIG. 4 shall be 0.5-2.0 mm. It is preferable. This is because water and tea leaf fine powder 20 permeate in the tea leaf fine powder permeable region 32, and this region needs to be sufficiently secured. This value is a case where the tea leaf fine powder hardly permeable region 31 is circular as one embodiment of the present invention, but the tea leaf fine powder hardly permeable region 31 is a square shape, a textured shape, a lattice shape, a polka dot pattern, a polygonal shape. The area ratio between the tea leaf fine powder hardly permeable region 31 and the tea leaf fine powder hardly permeable region 32 is preferably equal to that of a circular shape.

  FIG. 6 shows a partial cross-sectional enlarged view of region B in the schematic cross-sectional view of the flat tea bag 1 of the present invention in FIG. FIG. 7 shows a schematic partial enlarged cross-sectional view of the region E in FIG. As shown in FIG. 6, tea leaf fine powder 21 is gradually drained by arranging the tea leaf fine powder hardly permeable region 31 at equal intervals with the tea leaf fine powder permeable region 32 in between. It can be easily adjusted by taking out the flat tea bag.

  Further, as shown in FIG. 6, in the closed space of the bag portion 30, water flows in and / or out of the tea leaf fine powder permeable region 32 between adjacent tea leaf fine powder permeable regions 31 to generate turbulent flow. Let This turbulent flow crushes the lump of tea leaf fine powder 20, and can efficiently dissolve the tea leaf fine powder 21 in water outside the bag portion 30. When the flat tea bag 1 is put into water and stirred, as shown in FIG. 7, the fibers 33 raised on the inner wall of the nonwoven fabric, particularly the fibers 33 not thermally welded in the tea leaf fine powder permeable region 32, are tea leaf fine powder 20. Even if a stagnation occurs, the tea leaf fine powder 20 that has become a mass is scraped off and water can be drained easily.

  One embodiment of the package of the flat tea bag of the present invention is shown in FIGS. FIG. 8 shows a schematic plan view of the flat tea bag package 10 of the present invention. FIG. 9 schematically shows a YY cross-sectional view of the flat tea bag package 10 in FIG. The flat tea bag packaging body 10 of the present invention includes an opening / closing portion 12 and a packaging bag 11 that can be opened and closed in an airtight manner, and further accommodates one or more flat tea bags stacked in a housing portion inside the packaging bag. ing. When a load, vibration, deformation force or the like is applied to the bag portion 30 of the accommodated flat tea bag 1, the tea leaf fine powder 20 is biased inside the bag portion 30, and the lump of the tea leaf fine powder 20 tends to become lumpy. Furthermore, since the tea leaf powder 20 is finer than the gap between the nonwoven fabrics, there is a problem that the tea leaf powder 20 spills out of the bag portion 30 due to a slight load, vibration, deformation force, or the like.

  In order to prevent these problems, the dimensions of the accommodating portion 13 inside the packaging bag 11 of the flat tea bag packaging body 10 of the present invention are devised. That is, the size of the container 13 of the packaging bag 11 of the flat tea bag package 10 is such that at least one of the vertical and horizontal dimensions is slightly larger than the size of the flat tea bag 1, for example, 5 times larger than the size of the flat tea bag 1. Lengthen ~ 30mm. Since the inner wall of the packaging bag 11 of the flat tea bag package 10 holds the flat tea bag 1 as indicated by the arrow in FIG. 9 during storage, tea leaves are contained inside the flat tea bag 1 during transportation and storage. The fine powder 20 is prevented from being unevenly distributed due to gravity, vibration or the like, and is less likely to become lumpy. At the same time, it is possible to prevent the tea leaf fine powder 20 from leaking from the gap between the nonwoven fabrics to the outside of the bag portion 30 during transportation.

  In order for the packaging bag 11 of the flat tea bag packaging body 10 of the present invention to secure the holding force as shown by the arrow in FIG. 9, the material of the packaging bag 11 is difficult to deform, double structure or multi-layer structure. It is also preferable to use this material. The packaging bag 11 of the flat tea bag packaging body 10 of the present invention is preferably made of a material that is excellent in preservability of tea leaf powder over a long period of time and does not transmit light. The package 10 can be printed with a product name or the like on the surface so that it can be displayed at the store.

  As mentioned above, although demonstrated using one Embodiment of this invention, this invention is not limited only to this.

  The flat tea bag and its package of the present invention can be drained, can easily prepare tea with good throat, can be easily handled and can be easily adjusted to the desired strength, and the nutrition of tea leaves Ingredients can be ingested without any surplus, have excellent storage stability, can withstand loads and vibrations during transportation, and have the advantage of increasing consumers' willingness to purchase.

It is a schematic plan view of the flat tea bag of the present invention. It is typical sectional drawing of the flat tea bag of this invention. It is a typical partial enlarged plan view which shows one Embodiment of the area | region A of the flat tea bag of this invention in FIG. It is a typical partial enlarged plan view which shows one Embodiment of the area | region D of the flat tea bag of this invention in FIG. It is a typical partial expanded sectional view which shows the area | region C of the flat tea bag of this invention in FIG. It is the typical partial expanded sectional view which expanded the area | region B of the flat tea bag of this invention in FIG. 2 explaining how tea leaf fine powder melts in water. It is the typical partial expanded sectional view which expanded the area | region E in FIG. 6 explaining how tea leaf fine powder melt | dissolves in water. It is a typical top view which shows the package body of the flat tea bag of this invention. It is typical sectional drawing which shows the package body of the flat tea bag of this invention.

Explanation of symbols

1: Flat tea bag, 10: Flat tea bag package, 11: Packaging bag, 12: Opening and closing part, 13: Storage part, 20: Tea leaf fine powder, 21: Tea leaf fine powder, 30: Bag part, 31: Tea leaf fine powder Difficult permeability area, 32: Tea leaf fine powder permeability area, 33: Fiber, 34: Lower cloth, 35: Upper cloth, 36: Edge.

Claims (6)

A flat bag having a closed space between an upper cloth and a lower cloth made of a planar nonwoven fabric;
Tea leaf fine powder which is accommodated in the bag part in the range of 0.01 to 0.05 g / cm ^{2 in} the closed space and 90% or more of the particle size distribution is in the range of 10 to 300 μm. Flat tea bag.   The flat tea bag according to claim 1, wherein a thickness of the bag portion in a state where the tea leaf fine powder is accommodated is 0.20 to 1.00 mm. Flat tea bag according to claim 1 or 2 weight per unit area of the nonwoven fabric is 15 to 35 g / ^{m 2.} The non-woven fabric had tea leaf fine powder poorly permeable areas with an area of 1.0 to 4.0 mm ² in which the permeability of the tea leaf fine powder was partially reduced by embossing at equal intervals of 0.5 to 2.0 mm. The flat tea bag according to any one of claims 1 to 3.   The flat tea bag according to any one of claims 1 to 4, wherein the fibers constituting the nonwoven fabric are biodegradable plastics. A packaging having an opening and closing portion that can be opened and closed in an airtight manner, and having a flat storage portion that is 5 to 30 mm longer than the flat tea bag according to any one of claims 1 to 5 in any one of vertical and horizontal dimensions A bag,
Including at least one or a plurality of the stacked flat tea bags accommodated in the accommodating portion,
A flat tea bag package in which the flat tea bag is held by an inner wall of the housing portion with the opening / closing portion closed.

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