JP7189609B2 - Sheet material for beverage extraction and bag for beverage extraction - Google Patents

Description

The present invention relates to a beverage extraction sheet material capable of extracting a beverage from an extraction material such as tea leaves, herbs, or powdered coffee, and a beverage extraction sheet material manufactured by subjecting the beverage extraction sheet material to processing such as cutting and welding. Regarding the bag for beverage extraction, in particular, the sheet material for beverage extraction that has excellent instantaneous water permeability that allows water and hot water to permeate in a short time, is resistant to static electricity and has excellent antistatic properties, and the sheet material for beverage extraction. It relates to a beverage extraction bag manufactured by

Conventionally, beverage extraction sheet materials, which are materials for beverage extraction bags used for extracting beverages such as black tea, green tea, herbs, coffee, and soup, have been widely used from the viewpoint of processing flexibility and cost reduction. Long-fiber nonwoven fabrics and woven fabrics made of synthetic resin such as lactic acid are often used.
However, since many of synthetic resins such as PET and polylactic acid are hydrophobic, when a sheet material for beverage extraction is made of nonwoven fabrics or fabrics made of such synthetic resins, water and hot water cannot be used. There is a problem that it is difficult to extract the beverage in a short time because it is repelled by the surface of the sheet material and is difficult to permeate.

Therefore, in order to increase the water permeability of the sheet material for beverage extraction, a water permeation treatment is widely performed in which a treatment agent having a surfactant function is attached to the sheet material for beverage extraction.
For example, in the following Patent Document 1 (Japanese Patent No. 3939326), a sheet material for beverage extraction made of nonwoven fabric of polyolefin fibers such as polypropylene or polyester fibers such as polyethylene terephthalate is coated with sorbitan fatty acid ester, polyglycerin fatty acid ester , or by adhering an aqueous solution of a treatment agent containing sucrose fatty acid ester or the like, the water permeability of the sheet material for beverage extraction can be increased.

However, aqueous solutions of these processing agents have insufficient dispersibility of the processing agents in water. There is a problem that it is difficult to make the adhesive adhere evenly to the surface of the sheet material, and uneven adhesion tends to occur. If there is uneven adhesion of the treatment agent, for example, in a tea bag formed by making and filling a sheet material for beverage extraction, the treatment agent does not adhere to the part that first comes into contact with the surface of the hot water during use. In this case, the tea bag did not sink smoothly in hot water, and the beverage could not be extracted in an appropriate state.

Therefore, in order to prevent uneven adhesion of the treatment agent to the beverage extraction sheet material, it is conceivable to increase the amount of the treatment agent adhered. However, in that case, for example, when performing ultrasonic sealing or heat sealing in the process of bag-making the sheet material for beverage extraction to produce tea bags, etc., the treatment attached to the sheet material for beverage extraction There is a problem that the agent interferes with the sealing and the sealing strength at the sealed portion is lowered. Furthermore, if a large amount of the treatment agent adheres to the beverage extraction sheet material, the treatment agent may be eluted into the extracted beverage, degrading the flavor of the beverage.

In addition, synthetic resin sheet materials for beverage extraction generate static electricity by friction with bag-making and filling equipment when making tea bags, etc. by making bags and filling them with extraction materials (tea leaves, etc.). may carry. If the sheet material for beverage extraction is charged with static electricity, the attraction of static electricity will cause extraction materials such as tea leaves and foreign matter to adhere to the sheet material for beverage extraction and get caught in the sealing area, lowering the sealing strength. I had a problem. Furthermore, when the sheet material for beverage extraction is processed into bags and filled to produce tea bags, etc., there is a problem that the sheet material for extraction may stick to each part of the bag making/filling device and may not be transferred smoothly. was there.

The following Patent Document 2 (Japanese Patent No. 5005150) discloses that a binder mixture containing a surfactant is attached to a nonwoven fabric web material to impart antistatic properties to the nonwoven fabric web material to make it difficult to be charged with static electricity. technique is described.
However, Patent Literature 2 does not disclose a technique for uniformly applying a binder-free surfactant or antistatic agent to a nonwoven web without uneven adhesion.

Japanese Patent No. 3939326 Japanese Patent No. 5005150

Therefore, the present invention uses a long-fiber nonwoven fabric, woven fabric or knitted fabric made of polyester fiber or polyamide fiber as a main material, has excellent instantaneous water permeability, can extract beverages in an appropriate state, and can be controlled. To provide a sheet material for beverage extraction which has high electrical conductivity, is less likely to be charged with static electricity during bag making, filling processing, etc., and does not impair the flavor of the beverage.
Another object of the present invention is to provide a beverage extraction bag having a high sealing strength at the sealing portion, which is formed of the above beverage extraction sheet material.

The above problems have been solved by the following means.

[1] A treatment agent containing the following A component and either one or both of the following B component and C component in a ratio of 70: 30 to 95: 5 is applied to a polyester fiber Alternatively, it is attached to a long fiber nonwoven fabric, woven fabric or knitted fabric made of polyamide fibers in an amount of 0.001 to 1.00%, and the surface resistance value is 2.00 × 10 ¹³ Ω or less. Characteristic sheet material for beverage extraction.
Component A: A polyoxyethylene fatty acid ester represented by Chemical Formula 1 below.
Chemical Formula 1...R1-O-( _CH2 - _CH2 -O)nH
(In Chemical Formula 1, R1 is an acyl group having 8 to 18 carbon atoms, and n is an integer of 1 to 30.)
Component B: A linear alkylsulfonate represented by Chemical Formula 2 below.
Chemical formula 2...R2 ^- SO3 _- X1 ⁺
(In Chemical Formula 2, R2 is a linear aliphatic hydrocarbon group having 10 to 18 carbon atoms, and X1 is sodium or potassium.)
Component C: An aliphatic hydrocarbon sulfate salt represented by the following chemical formula 3.
Chemical formula ₃ ...R3-SO3 ^- X2 ⁺
(In Chemical Formula 3, R3 is an alkoxy group derived from animal and vegetable oils and fats having 10 to 18 carbon atoms, and X2 is sodium or potassium.)

[2] A beverage extraction sheet according to [1] above, wherein the treatment agent is attached to the long fiber nonwoven fabric, woven fabric or knitted fabric in an amount of 0.001 to 0.25%. material.

[3] A beverage extraction bag characterized by being formed of the beverage extraction sheet material according to [1] or [2] above.

(a) According to the beverage extraction sheet material according to the above [1], the following effects can be obtained.

(a-1) The sheet material for extracting beverages of the present invention comprises a specific polyoxyethylene fatty acid ester (ingredient A), which is a nonionic surfactant, and a specific linear alkylsulfonate (component A), which is an anionic surfactant. (Component B) and one or both of a specific aliphatic hydrocarbon sulfate (Component C) in a ratio of 70:30 to 95:5; 001 to 1.00%, and the surface resistance value is 2.00×10 ¹³ Ω or less.
The beverage extraction sheet material of the present invention has a surface electrical resistance value (surface resistance value) of 2.00×10 even though the amount of the treatment agent attached is as small as 0.001 to 1.00%. It has a resistance of ¹³ Ω or less, is easy to conduct electricity, and has high antistatic properties. It is presumed that this is because the treating agent having a surfactant function adheres almost uniformly to the surface of the beverage extraction sheet material, forming a continuously connected thin layer of the treating agent.
As described above, the sheet material for beverage extraction of the present invention has the treatment agent adhered substantially uniformly, so that it has excellent instantaneous water permeability, and the beverage can be extracted in an appropriate state.

(a-2) The sheet material for beverage extraction of the present invention has a surface resistance value of 2.00×10 ¹³ Ω or less and has high antistatic properties. Since it is difficult to be charged with static electricity during manufacturing, there are problems such as the adhesion of extraction materials and foreign matter to the beverage extraction sheet material due to the attraction of static electricity, and the beverage extraction sheet sticking to each part of the bag making and filling equipment. can be prevented from occurring.

(a-3) Since the sheet material for beverage extraction of the present invention has a small amount of treatment agent adhered to it, at 0.001 to 1.00%, the amount of treatment agent eluted into the extracted beverage can be reduced. , which does not impair the flavor of the beverage. Therefore, even if the beverage to be extracted has a delicate flavor such as green tea, it can be used satisfactorily.

(b) According to the sheet material for beverage extraction according to the above [2], in addition to the effects described in (a) above, the following specific effects can be obtained.
That is, since the amount of the treatment agent attached to the beverage extraction sheet material is as small as 0.001 to 0.25%, even when beverage extraction bags are continuously manufactured from the beverage extraction sheet material over a long period of time. Also, it is possible to prevent the treating agent from gradually moving from the beverage extracting sheet material and adhering and accumulating as dirt on the heat seal bar, ultrasonic horn, anvil, or the like of the bag making/filling device. Therefore, it is possible to prevent stain transfer to the beverage extraction bag and seal failure.

(c) According to the beverage extraction bag according to the above [3], the following effects can be obtained.
That is, since the beverage extraction bag according to the present invention is formed of the beverage extraction sheet material according to the invention [1] or [2], the beverage extraction bag described in (a) or (b) above can be used. It has the same effect as the effect of the sheet material.
In addition, since the treatment agent is evenly attached to the surface of the bag body of the beverage extraction bag, when the bag body is lowered to the surface of the hot water during use, which part of the bag comes into contact with the surface of the hot water. Since the hot water permeates instantly even when the bag is soaked, the bag body can be smoothly submerged in the hot water, and the beverage can be extracted in an appropriate state.

Furthermore, since the amount of the treatment agent adhering to the beverage extraction bag can be reduced, if the beverage extraction bag is subjected to ultrasonic sealing or heat sealing in the manufacturing process, the sealing strength of the sealed portion can be increased. can be high.

1 is a perspective view showing an embodiment of a beverage extraction bag of the present invention; FIG.

Embodiments of the present invention will be described below. However, the present invention is not limited to these embodiments.
Further, in the present invention, a numerical range represented by "-" means a range including the numerical values described before and after "-" as lower and upper limits.
Furthermore, in the present invention, "%" means "% by mass" unless otherwise specified.

The beverage extraction sheet material of the present embodiment is a bag containing an extraction material, like a tea bag, and is suitable as a material for a beverage extraction bag that is used by being immersed in hot water or water.
Here, the extraction material is a beverage material that extracts the components contained in hot water, water or alcohol. - Shavings such as dried mackerel, dashi kelp, dried sardines, herbal medicines, etc. can be mentioned.

The beverage brewing sheet material of the present embodiment is made of a long-fiber nonwoven fabric, woven fabric, or knitted fabric made of fibers of polyester resin or polyamide resin.

As the polyester-based resin, linear polyester, copolymer polyester, etc., for example, polyethylene terephthalate, polybutylene terephthalate, or the acid component of polyethylene terephthalate/polyethylene isophthalate copolymer, the polymerization ratio of terephthalic acid/isophthalic acid is Those adjusted to an appropriate range can be suitably used. In addition, terephthalic acid is the main component, and 5-sodium sulfoisophthalic acid other than isophthalic acid, 4-hydroxybenzoic acid, adipic acid, naphthalenedicarboxylic acid, phthalic acid, naphthalenecarboxylic acid, diethylene glycol, propylene glycol, 1,4-butane Polymerization of diol, pentaerythritol, etc. in an appropriate ratio can be used. Additionally, polytrimethylene terephthalate or polylactic acid can be used.

Examples of polyamide resins include polyamide 6 obtained by ring-opening polymerization of ε-caprolactam, polyamide 66 obtained by condensation polymerization of hexamethylenediamine and adipic acid, polyamide 11 obtained by condensation polymerization of 11-aminoundecanoic acid, and ω-laurolactam. Polyamide 12 obtained by ring polymerization or condensation polymerization of 12-aminododecanoic acid, polyamide 610, polyamide 6T, polyamide 6I, hexamethylenediamine and aromatic dicarboxylic acid obtained by condensation polymerization of hexamethylenediamine with sebacic acid, terephthalic acid and isophthalic acid, respectively Polyamide obtained by condensation polymerization of acid, polyamide obtained by condensation polymerization of plant-derived diamine and carboxylic acid, and the like can be used. In addition, those obtained by appropriately copolymerizing the above various polyamide-based resins can be used.

Other commonly used ingredients can be added to the polyester-based resin and the polyamide-based resin used for the sheet material for beverage extraction within a range that does not impair the effects of the present invention. For example, impact modifiers such as various elastomers, crystal nucleating agents, anti-coloring agents, delustering agents, antioxidants, heat-resistant agents, plasticizers, lubricants, weather-resistant agents, coloring agents or pigments can be added as appropriate. can be done.

As the long-fiber nonwoven fabric, a long-fiber nonwoven fabric manufactured by a spunbond method, a meltblown method, or the like, or a laminate of these in multiple layers can be preferably used, but the form and manufacturing method are not limited. Also. The woven fabric and knitted fabric using continuous filaments are not limited in their form or manufacturing method.

As the form of the long-fiber nonwoven fabric, woven fabric, or knitted fabric constituting the sheet material for beverage extraction, monofilaments, multifilaments, or composite fibers having a core-sheath structure in which two types of resin are combined can be used. Furthermore, the cross-sectional shape of these fibers does not necessarily have to be round, and may be oval, triangular, polygonal, or other irregular shape, or even hollow.

A treatment agent having a surfactant function is attached to the long-fiber nonwoven fabric, woven fabric, or knitted fabric constituting the sheet material for beverage extraction in order to impart good water permeability and antistatic properties to the sheet material for beverage extraction. .
The surfactant contained in the treatment agent must contain the following component A, and at least one of the following components B and C must be contained.

Component A is a nonionic surfactant, which is a polyoxyethylene fatty acid ester represented by Chemical Formula 1 below.
Chemical Formula 1...R1-O-( _CH2 - _CH2 -O)nH
In this chemical formula 1, R1 is an acyl group having 8 to 18 carbon atoms, for example, a linear acyl group (octanoyl group, nonyl group, decanoyl group, undecanoyl group, dodecanoyl group, tridecanoyl group, tetradecanoyl group, penta decanoyl group, hexadecanoyl group, heptadecanoyl group, octadecanoyl group, etc.), or a part of the structure of these acyl groups may contain a branch or double bond. In addition, R1 is not limited to a single structure acyl group, and may be a mixture of multiple types of acyl groups such as acyl groups obtained from animal and vegetable oils and fats.
In Chemical Formula 1, n is an integer of 1-30.
The polyoxyethylene fatty acid ester of component A can be produced by a known method.

Component B is an anionic surfactant, which is a linear alkylsulfonate represented by the chemical formula 2 below.
Chemical formula 2...R2 ^- SO3 _- X1 ⁺
In this chemical formula 2, R2 is a linear aliphatic hydrocarbon group having 10 to 18 carbon atoms, for example, a linear alkyl group (decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group, etc.), or linear alkenyl groups (decenyl group, undecenyl group, dodecenyl group, tridecenyl group, tetradecenyl group, pentadecenyl group, hexadecenyl group, heptadecenyl group, octadecenyl group, etc.).
Also, in Chemical Formula 2, X1 is sodium or potassium.
Such linear alkyl sulfonate of component B can be produced by a known method.

Component C is an anionic surfactant, and is an aliphatic hydrocarbon sulfate salt represented by Chemical Formula 3 below.
Chemical formula ₃ ...R3-SO3 ^- X2 ⁺
In this chemical formula 3, R3 is an alkoxy group having 10 to 18 carbon atoms and derived from animal and vegetable oils and fats, and a mixture of multiple types of alkoxy groups. For example, linear alkoxy group (decyloxy group, undecyloxy group, dodecyloxy group, tridecyloxy group, tetradecyloxy group, pentadecyloxy group, hexadecyloxy group, heptadecyloxy group, octadecyloxy group, etc.) , or those in which a part of the structure of these alkoxy groups contains a branch or a double bond, etc. are mixed.
Further, in chemical formula 3, X2 is sodium or potassium. Such an aliphatic hydrocarbon sulfate ester salt of component C can be produced by a known method.

The processing agent used for the beverage extraction sheet material of the present invention is a combination of the above component A and one or both of the above component B and C so that the ratio is 70:30 to 95:5. It can be produced by mixing to
Since both the B component and the C component are anionic surfactants and have similar properties, it is possible to use only one of them. It is possible to further improve the performance.

Other commonly used ingredients can be added to such a treatment agent as long as they do not impair the effects of the present invention. For example, surfactants other than the above, hydrophilicity-imparting agents, lubricants, lubricating aids, antioxidants, heat-resistant improvers, oil film enhancers, preservatives, antifoaming agents, wetting agents, etc. may be added as appropriate. can.

The above treatment agent is attached to the long-fiber nonwoven fabric, woven fabric or knitted fabric constituting the sheet material for beverage extraction so as to be 0.001 to 1.00%.
In order to attach the treatment agent to the long fiber nonwoven fabric, woven fabric or knitted fabric, for example, the treatment agent is diluted with water to form an aqueous solution (dispersion or emulsion) with a concentration of 1 to 10%, and the long fiber nonwoven fabric or the like is used. It may be sprayed or applied with a roller or the like, and then dried. In this case, the adhesion amount can be adjusted by appropriately changing the aqueous solution concentration of the treatment agent and the spray amount or coating amount. In addition, if necessary, it is possible to make a difference in the adhesion amount between the front and back sides of the long-fiber nonwoven fabric or the like, or to make it adhere only to one of the front and back sides.

When the amount of the treatment agent attached to the long fiber nonwoven fabric or the like is reduced to 0.001 to 0.25%, even if the beverage extraction bag is continuously manufactured over a long period of time, It is possible to prevent the treatment agent from gradually moving from the beverage extraction sheet material and adhering and accumulating as dirt on the heat seal bar, ultrasonic horn, anvil, or the like of the bag-making/filling device. Therefore, it is possible to prevent stain transfer to the beverage extraction bag and seal failure.

Next, an embodiment of a beverage extraction bag manufactured using the beverage extraction sheet material of the present invention will be described with reference to FIG.
The beverage extraction bag 1 is a product generally called a tea bag. Secondly, it consists of a tag 5 to be picked up by fingertips and a hanging thread 4 having one end adhered to the upper part of the bag body 2 and the other end adhered to the tag 5. - 特許庁The bag body 2 is made into a bag shape by forming line-welded parts 3 on the edges of each side by ultrasonic sealing, and inside the bag body, dried tea leaves for green tea, etc., are contained as an extraction material (not shown). of extraction material is enclosed.
When using such a beverage extraction bag 1, for example, the tag 5 is held with a fingertip, the bag 2 is immersed in a cup containing hot water for several seconds to several minutes, and the extraction material in the bag 2 is reconstituted with hot water. What is necessary is just to elute a beverage component.

The bag body 2 is formed by, for example, forming the bag body 2 by cutting and ultrasonically sealing the continuous elongated beverage extraction sheet material as a raw material using a known bag-making/filling apparatus. It is only necessary to fill and seal the extraction material. In addition, as other welding methods, heat sealing, fusion sealing in which the extraction sheet is cut and welded at the same time, or the like can be adopted.

The shape of the bag body 2 is not limited to the tetra shape shown in FIG. is also not particularly limited. Furthermore, it is also possible to temporarily adhere the hanging string 4 and the tag 5 to the surface of the bag body 2 with such a strength that they can be easily peeled off at the time of use.

The beverage extraction bag 1 after production is made of a resin film or paper (not shown) in order to maintain the flavor of the extraction material in the bag body 2 and to prevent contamination. It is preferable to package it in an outer bag or an outer container.

EXAMPLES The present invention will be specifically described below with reference to Examples, but the present invention is not limited to these Examples.
First, a method for measuring or testing each index in the present invention will be described.

(1) Adhesion amount (unit: %)
The amount of treatment agent adhered to the beverage extraction sheet material was measured using a Soxhlet extractor, and petroleum ether was used instead of diethyl ether as the measurement solvent used in the measurement method specified in JIS L 1095 9.28. Other than that, it was carried out according to the same measurement method.

(2) Surface resistance value (unit: Ω)
The surface resistance value of the beverage extraction sheet material was measured using a high resistivity meter (Hiresta-UP MCP-HT450, manufactured by Mitsubishi Chemical Analytech Co., Ltd.) in accordance with JIS K 6911 5.13. A URS probe with d1 (diameter of center electrode)=0.59 cm, d2 (inner diameter of ring electrode)=1.1 cm, and d3 (outer diameter of ring electrode)=1.8 cm was used as the probe. At the time of measurement, the temperature was 20°C and the relative humidity (RH) was 40%.

[Example 1: Sheet material for beverage extraction]
<1: Non-woven sheet material>
Polyethylene terephthalate melted by heating is extruded from a spinning nozzle to form fibers, and the fibrous resin is cooled while being drawn at a spinning speed of 5000 m/min using an ejector to form long fibers. was accumulated on a belt conveyor moving at a constant speed to form a spunbond nonwoven fabric (first layer).
Next, the polyester melted by heating (the polymerization ratio of terephthalic acid/isophthalic acid as the acid component is 86/14) is extruded from a spinning nozzle to form fibers, and air heated to 370° C. is applied to the fibrous resin. A meltblown nonwoven fabric (second layer) is formed by spraying and accumulating on the upper surface of the spunbond nonwoven fabric moving at a constant speed to cause it to scatter and solidify, and the two nonwoven fabrics are bonded together, and then flat rolled. By adjusting the thickness to 70 μm through the gap, a long nonwoven fabric sheet material having a width of 120 mm was produced.

In the obtained nonwoven fabric sheet material, the average fiber diameter of the spunbond nonwoven fabric forming the first layer was 21 μm, and the basis weight was 12 g/m ² . The melt-blown nonwoven fabric forming the second layer had an average fiber diameter of 18 μm and a basis weight of 6 g/m ² .
In addition, in such a nonwoven fabric sheet material, the first layer corresponds to the front side, and the second layer corresponds to the back side.

<2: Treatment agent>
A processing agent was prepared by mixing the following A1 component, B1 component and C1 component at a ratio of 80:10:10.
A1 component: Polyoxyethylene fatty acid ester represented by the following formula.
R1-O-( _CH2 - _CH2 -O)nH
Here, R1 = an acyl group derived from coconut oil, n = 15.
B1 component: a linear alkylsulfonate represented by the following formula.
R2 ^- SO3 _- X1 ⁺
Here, R2 = dodecyl group, X1 = potassium.
C1 component: an aliphatic hydrocarbon sulfate represented by the following formula.
R3-SO3 ^- X2 ⁺
Here, R3=coconut oil-derived alkoxy group, X2=potassium.

<3. Sheet material for beverage extraction>
The treating agent obtained in <2: treating agent> was diluted with water to prepare an aqueous solution (dispersion) having a concentration of 4.5%. Next, the above aqueous solution is sprayed on the back side (second layer side) of the nonwoven fabric sheet material obtained in <1: Nonwoven fabric sheet material> with a sprayer, and then dried to form a long beverage extraction with a width of 120 mm. We manufactured sheet material for

The amount of the treating agent adhered to the obtained sheet material for beverage extraction was 0.05%. The surface resistance value of the surface side (first layer side) of the sheet material for beverage extraction was 5.07×10 ¹¹ Ω.
Thus, the obtained sheet material for beverage extraction has a low surface resistance value in spite of the small amount of the treatment agent adhered. It is inferred that the agent adheres almost uniformly, forming a continuously connected thin layer of the treatment agent.

[Example 2: Beverage extraction bag]
The beverage extraction sheet material of Example 1 above is set in a bag making and filling device (Tsubakimoto Kogyo Co., Ltd. TWINKLE, filling capacity 200 bags / minute), and the front side of the beverage extraction sheet material is outside and the back side is A tetra-shaped (50 mm on a side) bag body 2 is formed by line-welding a predetermined portion with an ultrasonic seal so that it is inside, and dry green tea leaves (1.8 g) are enclosed, as shown in FIG. A beverage extraction bag (green tea bag) 1 shown was manufactured.
During manufacture of the beverage extraction bag 1, dry tea leaves will not adhere to the beverage extraction sheet material due to the attraction of static electricity, and the beverage extraction sheet will not stick to each part of the bag making/filling device. No defective products occurred.
Also, no contamination was observed in the ultrasonic sealing process parts (horn and anvil) of the bag-making/filling device.

Next, holding the tag 5 of the obtained beverage extraction bag 1, the bag body 2 was slowly lowered onto the surface of 200 ml of hot water of about 95°C in a cup. Even the dried tea leaves in 2 were permeated, and the bag body 2 settled smoothly in hot water.
After that, the bag 2 was immersed in hot water for 1 minute, and then slowly shaken up and down five times to extract green tea. When the extracted green tea was tasted, the flavor was good, and the effect of the treatment agent on the flavor was not felt.

[Test example]
<<1: Creating a sample of sheet material for beverage extraction>>
The A1 component, B1 component and C1 component described in <2: Treatment agent> of [Example 1] above are mixed in the "mixing ratio" column of beverage extraction sheet material samples S1 to S7 in Table 1 below. , were mixed at 7 different mixing ratios to prepare 7 types of treatment agents.
The obtained 7 types of treatment agents were applied to the nonwoven fabric sheet material described in <1: Nonwoven fabric sheet material> in [Example 1] according to the method described in <3: Beverage extraction sheet material>. By adhering them, samples S1 to S7 of sheet material for beverage extraction shown in Table 1 below were prepared. The sample S3 is the same as the beverage extraction sheet material of [Example 1].

Next, the treatment agent described in <2: Treatment agent> of [Example 1] above is diluted with water to prepare an aqueous solution (dispersion) having a concentration of 4.5%. On the surface side of the nonwoven fabric sheet described in <1: Nonwoven fabric sheet material> of Example 1], the spraying amount was changed in 7 ways with a sprayer, and dried, and the treatment agent described in Table 1 below. Samples S8 to S14 of sheet material for beverage extraction having different adhesion amounts were prepared.

<<2: Making a sample of a beverage extraction bag>>
Samples T1 to T14 of beverage extraction bags (green tea bags) shown in Table 1 below were prepared according to the method described in [Example 2] using the beverage extraction sheet material samples S1 to S14. .

<<3-1: Sedimentation test of beverage extraction bag in hot water>>
Ten beverage extraction bag samples T1 to T14 were prepared, and each of these samples was placed on the surface of 200 ml of hot water of about 95°C in a cup while holding the tag 5 and placing the bag 2 thereon. It was lowered slowly, and the sedimentation state of the bag body 2 of each sample in the hot water was observed.
Evaluation in this test was based on the following criteria.
a: For all 10 samples, when the bag body 2 was lowered to the surface of the hot water for the first time, it settled smoothly in the hot water.
b: Among the 10 samples, when the bag 2 was first lowered to the surface of the hot water, it did not sink smoothly in the hot water, and it floated on the surface of the hot water for several seconds, and then slowly settled in the hot water. There were more than one sample with
The results of this test are shown in the "Evaluation: Sedimentation in hot water" column of Table 1 below.

<<3-2: Flavor test of extracted green tea>>
For samples T1 to T14 of the beverage extraction bag, the bag body 2 was immersed in 200 ml of hot water of about 95° C. in a cup for 1 minute while holding the tag 5 and slowly reciprocated up and down five times. Green tea was extracted from each sample by shaking. Each green tea extracted was evaluated for flavor by 5 evaluators.
Evaluation in this test was based on the following criteria.
a: None of the five evaluators felt any offensive taste or offensive odor.
b: One or more of the five evaluators felt an offensive taste or offensive odor.
The results of this test are as shown in the "Evaluation: Flavor" column in Table 1 below.

<<3-3: Observation test of dirt on bag making/filling equipment>>
Using the beverage extraction sheet material samples S1 to S14, according to the method described in [Example 2] above, a large number of beverage extraction bag (green tea bag) samples T1 to T14 shown in Table 1 below were prepared. did. At that time, the operating time of the device is 60 minutes for each sample from S1 to S14, and each time the operating time for each sample ends, the degree of contamination of the ultrasonic sealing process part (horn and anvil) of the bag making / filling device is checked. I visually observed.
Evaluation in this test was based on the following criteria.
a: No contamination was observed.
b: Stain due to the treatment agent transferred from the sheet material for beverage extraction was slightly observed.
c: Dirt due to the processing agent transferred from the beverage extraction sheet material accumulated, and cleaning was required.
The results of this test are shown in the "Evaluation: Stain" column in Table 1 below.

From Table 1, the treatment agent prepared by mixing the A1 component and either one or both of the B1 component and the C1 component in a ratio of 70:30 to 95:5 was applied to the nonwoven fabric sheet material. The surface resistance value of the beverage extraction sheet material (S2 to S6, S9 to S13) prepared by attaching so that the adhesion amount is 0.001 to 1.00% is 2 × 10 ¹³ Ω or less. is understandable.

In addition, the beverage extraction bags (T2 to T6, T9 to T13) made from such beverage extraction sheet materials (S2 to S6, S9 to S13) smoothly settle in hot water, and the flavor of the extracted green tea is enhanced. It can be understood that it is good.

Furthermore, with the sheet material for beverage extraction (S2 to S6, S11 to S13) in which the amount of the treatment agent adhered was 0.001 to 0.25%, the beverage extraction bag was continuously manufactured for 60 minutes. However, it can be understood that the processing agent is less likely to move from the beverage extraction sheet material to the ultrasonic sealing process sites (horn and anvil) of the bag-making/filling apparatus and accumulate as dirt.

The beverage extraction sheet material and beverage extraction bag according to the present invention can be suitably used in the field of beverage extraction sheet material and beverage extraction bag used for extraction of beverages such as black tea, green tea, coffee, and soup.

1 Beverage extraction bag 2 Bag body 3 Line welding part 4 Suspension thread 5 Tag

Claims (3)

A treatment agent containing the following A component and either one or both of the following B component and C component in a ratio of 70: 30 to 95: 5, polyester fiber or polyamide It is attached to a long fiber nonwoven fabric, woven fabric or knitted fabric formed by fibers in an amount of 0.001 to 1.00%, and has a surface resistance value of 2.00 × 10 ¹³ Ω or less. Sheet material for beverage extraction.
Component A: A polyoxyethylene fatty acid ester represented by Chemical Formula 1 below.
Chemical Formula 1...R1-O-( _CH2 - _CH2 -O)nH
(In Chemical Formula 1, R1 is an acyl group having 8 to 18 carbon atoms, and n is an integer of 1 to 30.)
Component B: A linear alkylsulfonate represented by Chemical Formula 2 below.
Chemical formula 2...R2 ^- SO3 _- X1 ⁺
(In Chemical Formula 2, R2 is a linear aliphatic hydrocarbon group having 10 to 18 carbon atoms, and X1 is sodium or potassium.)
Component C: An aliphatic hydrocarbon sulfate salt represented by the following chemical formula 3.
Chemical formula ₃ ...R3-SO3 ^- X2 ⁺
(In Chemical Formula 3, R3 is an alkoxy group derived from animal and vegetable oils and fats having 10 to 18 carbon atoms, and X2 is sodium or potassium.) 2. The sheet material for extracting beverages according to claim 1, wherein the treatment agent is attached to the long fiber nonwoven fabric, woven fabric or knitted fabric in an amount of 0.001 to 0.25%. A beverage brewing bag formed of the beverage brewing sheet material according to claim 1 or 2.

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