JPH01227722A - Extraction vessel - Google Patents

Abstract

PURPOSE:To obtain a required flavor retaining property without losing the ease at the time of use by forming a housing part for the material to be extracting partly of water permeable members and covering the outside of the water permeable members of a barrier-type film having heat shrinkability. CONSTITUTION:The housing part 7 of the extraction vessel 1 having the housing part 7 for the material C (e.x.; coffee beans) which is to be extracted and is extracted by hot water is formed partly of the water permeable members 4, 5 (e.g.; porous stretched polypropylene film). Further, the outside of the water permeable member 4 is coated with the barrier-type film 3 having the heat shrinkability (e.g.; a coextruded, multilayered and stretched film consisting of an ethylene-vinyl acetate copolymer/ethylene-vinyl alcohol copolymer/nylon/ ethylene-vinyl acetate copolymer). Namely, the film 3 shrinks to expose the water permeable members when the film comes into contact with hot water at the time of extraction and, therefore, the necessary flavor retaining property is obtd. and the coffee, etc., are obtainable with ease.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an extraction container, and in particular to a container for storing extractables such as coffee, black tea, green tea, etc., which are extracted and drunk with hot water. This relates to an extraction vessel.

[Conventional technology]

In recent years, 1. With the individualization and simplification of luxury goods, for example, in the case of coffee, the amount of powder roasted per serving = 1 - Beans are individually placed in water-permeable filters made of non-woven fabric, etc. Packed with paper and supported by a paper support, or placed at the bottom of an injection molded cup,
Alternatively, various types are commercially available, including those that are used with special funnel-shaped containers and the like. Furthermore, black tea, green tea, etc. have been widely used in the form of so-called tea bags.

[Problem to be solved by the invention]

However, all of these focus on ease of use, so they are packed only with filters, etc., and multiple packs are packed together with barrier films or other materials. is wrapped in aluminum foil, etc.

Therefore, when the package is opened, the aroma retention properties are impaired, and the freshness of the coffee, etc. in the unused pack within the same package is lost. Furthermore, if each product is individually packaged with a barrier film or the like, the number of manufacturing steps increases, resulting in an increase in costs, and the ease of use is impaired. In addition, in both cases, it was necessary to separately prepare hot water.

Therefore, an object of the present invention is to provide an extraction container that has the necessary aroma retention properties without impairing the ease of use.

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention provides an extraction container having a storage part for an extracted material to be extracted with hot water.
At least a part of the storage section is formed of a water-permeable member, and the outside of the water-permeable member is covered with a barrier film having heat-shrinkable property.More specifically, , in the extraction container with the upper and lower openings of the storage section, both the upper and lower openings are covered with a water-permeable member, and the upper opening of the water-permeable member is covered with a barrier film having heat-shrinkable properties; However, it is characterized in that the lower part of the water permeable member at the lower opening is covered with aluminum foil or a barrier film.

[For production]

Therefore, since the material to be extracted in the storage compartment is individually coated with a heat-shrinkable barrier film, it has sufficient barrier properties, that is, aroma retention, until just before use, and also prevents contact with hot water during extraction. As a result, the heat-shrinkable barrier film shrinks and exposes the water-permeable member, so hot water comes into contact with the material to be extracted through this water-permeable member, and extraction can be performed.

Furthermore, since the extraction container with the upper and lower openings of the storage section is formed as described above, the extraction container is integrally provided at the bottom of the funnel-shaped container, and the barrier film at the lower opening of the extraction container is peeled off. When the cup is placed on top of the cup and water is poured into the funnel and heated in a microwave oven, the heated water causes the barrier film that has heat-shrinkable properties to shrink and the hot water flows down through the water-permeable member. The substance to be extracted can then be extracted.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a sectional view showing a state where the extraction container is attached to the bottom of the funnel-shaped container, and FIG. 2 is an explanatory diagram of the extraction state.

The extraction container 1 includes a ring-shaped main body 2 having upper and lower openings 2a, 2b, and upper and lower openings 2a, 2b of the main body 2.
3. Barrier film with heat shrinkability provided in 3. It is formed of water-permeable films 4 and 5 and a barrier film 6, and its interior is a storage section 7 for storing powdered roasted coffee beans C as the material to be extracted.

The main body 2 is made of a material that has aroma retention, heat resistance, and easy sealing properties, such as polypropylene/
A vacuum-formed ethylene-vinyl alcohol copolymer/polypropylene coextrusion film, an injection molded product of polypropylene resin, etc. can be used.

The inner (lower side) water permeable film 4 and the outer (upper side) heat-shrinkable barrier film 3 attached to the one-way opening 2a of the main body 2 are integrated as a laminate 1-film. The water-permeable film 4 is made of a material that has heat resistance, easy sealing properties, and water permeability, and may be made of non-woven fabric or the like. The diameter is 0.1-3,0111111, preferably 0.2-2.
It is desirable to use a perforated biaxially stretched polypropylene film having 10,000 to 3,000,000 holes/hole, preferably 100,000 to 1,000,000 holes/hole.

The heat-shrinkable barrier film 3 provided to cover the water-permeable film 4 may be a film made of a material with aroma retention and heat-shrinkability, such as an ethylene-vinyl acetate copolymer film. A coextruded multilayer stretched film made of a combination/ethylene-vinyl alcohol copolymer/nylon/ethylene-vinyl acetate copolymer is used.

The water-permeable film 4 and the heat-shrinkable barrier film 3 are heat-compressed after corona discharge treatment, and are integrally formed as a laminate film that is easily peelable with hot water. The transparent film 4 side is the main body part 2
It is pasted on the top surface of the board by heat sealing, etc. As mentioned above,
] If lamination is carried out by RONA discharge treatment, lamination can be performed at a low temperature, so that the heat shrinkability of the barrier film 3 having heat shrinkability will not be lowered by the heat during lamination.

On the other hand, there is a
The water-permeable film 5 is made of a material having heat resistance, easy sealing properties, and filtration properties that allow water to pass through but not allow the coffee beans C to pass through.
It is also possible to use the perforated film used in a, but if there is no need to laminate, for example, a film with a weight of 10 to 6
09/TIt, preferably a polypropylene nonwoven fabric or a polyethylene nonwoven fabric having a weight of 15 to 40 g/m.

Further, the barrier film 6 provided on the outside (lower side) of the lower opening 2b to cover the water-permeable film 5 is made of a material that has fragrance retention, easy sealing properties, and easy peelability. It can be made of various materials, such as metal sheets such as aluminum foil,
A multilayer film consisting of two-wheeled stretched polypropylene/aluminum foil/sealant or a hot melt adhesive layer, or a multilayer film consisting of polyethylene terephthalate/aluminum foil/hot melt adhesive layer, etc. can be used. In addition, the above sealant and hot melt 1
For the adhesive layer, polypropylene or boria O
A pyrene-based material can be used.

Both films 5.6 are heat-sealed and pasted at the contact portions with the periphery of the lower opening 2b of the main body 2, respectively.

In the extraction container 1 formed in this way, the upper and lower openings 2a and 2b of the extraction container 1 are covered with barrier films 3 and 6, respectively, until just before use, so that each extraction container 1 has the necessary and sufficient capacity. Since it has aroma retention properties, even when a package containing a large number of extraction containers 1 is opened, the freshness of the coffee beans C stored inside can be retained for a long period of time.

Moreover, the funnel-shaped container 8 holding the extraction container 1 is used for one batch,
That is, it is formed to a size that can store one cup of water, and is made of a heat-resistant material such as injection molded polypropylene resin or boria [1 pyrene/ethylene-vinyl alcohol copolymer/ It is formed by vacuum or pressure forming of a coextruded film made of polypropylene, and the bottom part has a fitting part 8a into which the spigot container 1 is fitted.
is formed. This fitting part 8a is formed in a shape corresponding to the outer shape of the main body and part 2, and when the extraction container 1 is fitted to the fitting part 8a and water is poured into the funnel-shaped container 8,
The extraction container 5 is formed to hold the extraction container 1 with enough force to cause the container 1 to float, and to prevent water from leaking between the two.

Further, a groove 8b is formed on the outer periphery of the bottom of the funnel-shaped container 8. As shown in FIG. 2, when the extraction container 1 is fitted into the funnel-shaped container 8 and set on the coffee cup 9, the groove 8b is formed between the bottom surface of the funnel-shaped container 8 and the upper edge of the coffee cup 9. A ventilation space is formed between the coffee cups 9 and 7 to remove air and steam from the coffee cup 9 during brewing, and it can also be formed with unevenness or ribs.

Next, how to use the extraction container 1 will be explained.

First, the extraction container 1 is fitted into the fitting part 8a at the bottom of the funnel-shaped container 8, and the barrier film 6 at the bottom of the extraction container 1 is fitted.
Peel off. Then, set this on a coffee cup 9, pour an appropriate amount of water into the funnel-shaped container 8, and heat it in a microwave oven 10.

Funnel-shaped container8. When the water inside is heated and becomes hot water, the barrier film 3 having heat absorbing properties covering the upper opening 2a of the extraction container 1 contracts and the water permeates through the water.
Peel from. As a result, the hot water is transferred to the wooden barrel film 4.
It enters into the storage part 7 and flows down into the coffee cup 9 through the water-permeable film 5 while coming into contact with the coffee beans C, and coffee is extracted. At this time, the air in the coffee cup 9 is released from the ventilation groove 8b, so that the flow of the hot water, that is, the extracted coffee, is not obstructed.

In this way, coffee can be easily made using water and a microwave oven, so there is no need to boil water separately, and one cup of coffee can be easily obtained. Furthermore, even if the extraction container 1 is fitted into the funnel-shaped container 8 and hot water is poured into the coffee cup 90, the heat-shrinkable barrier film 3 will similarly contract, making it easy to extract coffee. It can be carried out. .

Note that the barrier film 6 attached to the lower opening 2b of the extraction container 1 can also be a barrier film having heat shrinkability. If the extraction container 1 is formed by covering the outside of the rainwater permeable films 4 and 5 of the extraction container 1 with the barrier film 3 that has heat shrinkability, the barrier film 3 can be removed without peeling. Similarly to the above, extraction can be performed by placing it in a cup with water and using a microwave oven, or by pouring hot water into the cup.

In addition, a film 5 provided on the lower opening 2b side of the extraction container 1
, 6 are integrally formed as a laminate film, for example, a laminate film of a perforated polypropylene film and a coextruded PlusDeck multilayer film, in the same way as the films 3 and 4 provided in the upper opening 2a, and the lower opening 2b is
It can also be pasted on. Furthermore, the upper opening 2a is provided with (
It is also possible to form the pull films 3 and 4 separately and stick them to the upper opening 2a, respectively, but by using a laminated film as in this example, the sticking work can be simplified. be able to. In addition, the attachment of each film is not limited to heat sealing, and ultrasonic sealing, adhesion, etc. can also be used.

Alternatively, the abutting portions of the extraction container 1 and the funnel-shaped container 8 may be welded to integrally form them.

Next, FIG. 3 shows another embodiment of the present invention, in which a funnel part 11a is integrally formed in the upper part of the extraction container 11.

In FIG. 3, the same elements as those in FIG. 1 are given the same reference numerals and their explanations will be omitted.

Furthermore, as shown in FIG.
A laminated film made of the You can also extract tea by immersing it in hot water like a bag.

Furthermore, by changing the material and structure of the film and adjusting the temperature at which heat shrinkage, that is, peeling, begins, extraction can be performed at the optimal temperature.

Experimental Example 1 A coextruded film of polypropylene/1 dylene-vinyl alcohol copolymer/polypropylene having a thickness of 0.7 mm was vacuum-formed into the shape shown in Fig.
An extraction container 11 (dripper) having a size of mmφ, an upper opening of the storage part of 60n+mφ, and a lower opening of the storage part of 40mmφ was manufactured. Then, a weight 2 is placed on the upper surface of the opening edge of the lower opening 2b.
A water-permeable film 5 made of a polypropylene nonwoven fabric of 3 g/g/g and 45 a+mφ is heat-sealed and pasted, and the bottom surface is
Polyethylene terephthalate 1-12 / Aluminum foil 40 Jim / Polypropylene hot melt adhesive layer 1
A barrier film 6 made of a 5 μm multilayer film was similarly heat-sealed and attached.

After filling the storage section 7 with 7g of powdered roasted coffee beans C,
The upper opening 2a is attached by heat sealing with the water permeable film 4 side facing down of a 7Q mmφ laminate film obtained by corona discharge treatment and thermocompression bonding of a water permeable film 4 and a heat shrinkable barrier film 3. I put it on and covered it.

The water permeable film 4 has a thickness of 30 mm and a pore diameter of 0.5 mm.
A perforated stretched polypropylene film with a diameter of 640,000 pores/end was used, and the heat-shrinkable barrier film 3 was made of ethylene-vinyl acetate copolymer with a thickness of 13.5 μm.
(Crimp side) / Ethylene-vinyl alcohol copolymer 3-1/Nylon 10-1/Ethylene-vinyl acetate copolymer 13
．． A coextruded multilayer film with a thickness of 5 um was used. The heat shrinkage rate (95°C, 1 minute) of this film is 27 in the P direction.
-28%, and 22-25% in the ■ direction.

For thermocompression bonding, first, the pressure bonding sides of both films 3 and 4 were bonded using a VETAPHONE electric discharge machine (high frequency oscillation part: ε-TRE A T E RET4-4).
KW), the water-permeable film 4 was subjected to corona discharge treatment at an output of 2°4 KW, the heat-shrinkable barrier film 3 was subjected to a corona discharge treatment at an output of OKW, and a heat-pressing unit consisting of a heating roll and a pair of rolls was used. Heating roll temperature 105℃, clamping force 10 to 9/
cm (linear pressure) and thermocompression bonding speed of 15 m/min to obtain a laminate film.

After peeling off the barrier film 6 on the bottom of the extraction container 11 by hand, place the extraction container 11 on top of a coffee cup, pour 140cc of water into the extraction container 11, and heat it in a microwave oven (high frequency output 500W). As the heating progresses, just before boiling (about 2 minutes later), the barrier film 3 that controls heat shrinkage shrinks and peels off from the water permeable film 4, and the hot water flows from the water permeable film 4 into the storage compartment 7. The water flowed down and coffee extraction started, and in about 3 minutes I was able to obtain one cup of coffee.

Experimental Example 2 A water-permeable stretched polypropylene film with a thickness of 30u+n, a pore diameter of 1°Qn+m, and a hole spacing of 5.0 mm was used as a barrier film with heat shrinkability. Combined 13゜58m (crimped side)/Saponified ethylene-vinyl acetate copolymer 3um
/Nylon 10μm/Ethylene-vinyl acetate copolymer 1
Using 3.5 um, thermocompression bonding was performed in the same manner as in Experimental Example 1 to obtain a laminate film. When the interfacial adhesive strength of this laminate film was measured, it was found to be 40g72O
It was Ill1 wide.

In addition, the above laminate film was placed at the opening of an injection molded polypropylene dripper at 190℃ x 2゜0Kg/ct.
When heat sealing was performed under the conditions of dX1 and 5 seconds, and the seal strength between the laminate film and dripper was measured,
The width was greater than INg/20 mm, and the laminated film was strong enough to be cut.

When water was poured into a dripper using this laminate film and heated in the same way in a microwave for 2 minutes and 30 seconds, when the water temperature reached approximately 95°C, the barrier film, which has heat-shrinkable properties, shrunk and became visible. It was peeled off from the hole film. Furthermore, 9
No changes such as shrinkage or peeling occurred at temperatures below 5°C.

〔Effect of the invention〕

As explained above, in the extraction container of the present invention, at least a part of the storage portion of the material to be extracted is formed of a water-permeable member, and the outer side of the water-permeable member is made of a heat-shrinkable barrier material. Since it is coated with a film, it has sufficient barrier properties, that is, aroma retention properties, until immediately before use, and when it comes into contact with hot water during extraction, the barrier film contracts and exposes the water permeable member. Extraction can be carried out by bringing hot water into contact with the material to be extracted through the water-permeable member;
You can easily get coffee, tea, etc.

In addition, both the upper and lower openings of the extraction container, which is open at the top and bottom of the storage section, are each covered with a water-permeable member, and the upper part of the water-permeable member in the upper opening is covered with a barrier film that has heat-shrinkable properties, and the lower The lower part of the water-permeable member at the opening is covered with aluminum foil or a barrier film, so that the extraction container is attached to the bottom of the funnel-shaped container, or the funnel is integrally formed with the extraction container. After peeling off the barrier film covering the lower opening using the extractor, place it on a heating pot, etc., pour water into the extraction container, and heat it in the microwave to make one cup of coffee, etc. It can be easily obtained in a short period of time, has sufficient aroma retention properties, and can also improve ease of use.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the extraction container according to the present invention attached to the bottom of the funnel-shaped container, and FIG. 2 is an explanatory diagram showing the extraction state.
FIG. 3 is a sectional view of an extraction container showing another embodiment, and FIG. 4 is a bag-shaped embodiment. 1.11.21...Extraction container 2...Body part 2a
...Upper opening 2b...Lower opening 3...
・Barrier film with heat shrinkability 4.5...
Water permeable film 6...Barrier film 7...
・Storage part 8...Funnel-shaped container C...=1-Head bean patent applicant Mitsubishi Plastics Co., Ltd. agent Patent attorney Denki Kido
Kido −Production amount
Makoto Ogawa - 3rd Zugu Yuzu ■ Container collapse 4 Intun extraction equipment Zu 7 Go

Claims (1)

[Scope of Claims] 1. In an extraction container having a storage part for a material to be extracted with hot water, at least a part of the storage part is formed of a water permeable member, and the water permeable member is made of a water permeable member. An extraction container characterized in that the outside is covered with a heat-shrinkable barrier film. 2. In an extraction container with openings at the top and bottom of the storage part of the material to be extracted with hot water, both the top and bottom openings are covered with a water permeable member, and the area above the water permeable member in the upper opening is covered with a water permeable member. An extraction container characterized in that the water-permeable member at the lower opening is covered with aluminum foil or a barrier film.