JP2002264912A - Method of filling content liquid and beverage in closure device - Google Patents
Method of filling content liquid and beverage in closure deviceInfo
- Publication number
- JP2002264912A JP2002264912A JP2001068483A JP2001068483A JP2002264912A JP 2002264912 A JP2002264912 A JP 2002264912A JP 2001068483 A JP2001068483 A JP 2001068483A JP 2001068483 A JP2001068483 A JP 2001068483A JP 2002264912 A JP2002264912 A JP 2002264912A
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- Japan
- Prior art keywords
- container
- content liquid
- nitrogen
- liquid
- beverage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Vacuum Packaging (AREA)
- Basic Packing Technique (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、果汁飲料、茶飲
料、炭酸飲料、アルコール飲料などを内容液として合成
樹脂製容器に充填する方法、および容器とキャップから
なる閉止装置内に飲料が充填された閉止装置入り飲料に
関し、特に、内容液の品質低下を防ぐことができる内容
液充填方法および閉止装置入り飲料に関する。BACKGROUND OF THE INVENTION The present invention relates to a method of filling fruit juice drinks, tea drinks, carbonated drinks, alcoholic drinks and the like into a synthetic resin container as a content liquid, and a method of filling a drink in a closing device comprising a container and a cap. In particular, the present invention relates to a content liquid filling method and a beverage containing a closure device, which can prevent the quality of the content liquid from deteriorating.
【０００２】[0002]
【従来の技術】果汁飲料、茶飲料、炭酸飲料、アルコー
ル飲料等を内容液として容器に充填するには、内容液を
容器内に供給した後、容器口部にキャップを装着する方
法が採られる。内容液の充填を行う際には、通常８０℃
以上の高温条件下で充填を行う熱充填や、予め殺菌処理
した容器およびキャップを用いて常温下で行う常温無菌
充填が採用されている。上記内容液を充填する容器とし
ては、ポリエチレンテレフタレート（以下、ＰＥＴとい
う）などからなる合成樹脂製容器が広く用いられてい
る。2. Description of the Related Art In order to fill a container with a fruit juice, a tea beverage, a carbonated beverage, an alcoholic beverage, or the like as a content liquid, a method is employed in which the content liquid is supplied into the container and a cap is attached to the container mouth. . When filling the contents liquid, usually 80 ° C
The hot filling for filling under the above high temperature condition and the normal temperature aseptic filling at room temperature using a container and a cap which have been sterilized in advance are adopted. As a container for filling the content liquid, a synthetic resin container made of polyethylene terephthalate (hereinafter, referred to as PET) or the like is widely used.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の充填方法で
は、特に熱充填によって内容液の充填を行う場合に、内
容液を充填した容器が外気により冷却され容器内の温度
が低くなると、蒸気圧の低下により容器内の圧力が大気
圧よりも低くなることがあった。一般に、合成樹脂材料
はガスを透過する性質を有することから、合成樹脂製の
容器は、わずかにガス透過性を示すことが多い。このた
め、合成樹脂製容器を用いる場合には、内容液の酸化等
の問題を防ぐため、外気が容器壁を透過して容器内に侵
入するのを防ぐ技術が要望されていた。また容器内圧が
低下した場合には、容器内外の圧力差や外部からの衝撃
により容器が変形しやすくなる問題があった。また内容
液が炭酸飲料である場合には、内容液中の二酸化炭素が
容器壁を透過して外部に逃散し、内容液中の溶存二酸化
炭素濃度が低下することがあった。本発明は上記事情に
鑑みてなされたもので、その目的は以下の通りである。 （１）内容液を充填した容器内に外気が侵入するのを防
ぐことができる内容液充填方法を提供する。 （２）容器の変形を防ぐことができる内容液充填方法を
提供する。 （３）内容液が炭酸飲料である場合に、内容液中の溶存
二酸化炭素濃度を高く維持することができる内容液充填
方法を提供する。In the above-mentioned conventional filling method, particularly when the content liquid is filled by hot filling, when the container filled with the content liquid is cooled by the outside air and the temperature in the container becomes low, the vapor pressure is reduced. In some cases, the pressure in the container became lower than the atmospheric pressure due to the decrease in the pressure. In general, since synthetic resin materials have a property of transmitting gas, a container made of synthetic resin often shows a slight gas permeability. Therefore, when a synthetic resin container is used, a technique for preventing outside air from penetrating through the container wall and entering the container has been demanded in order to prevent problems such as oxidation of the content liquid. Further, when the pressure inside the container is reduced, there is a problem that the container is easily deformed due to a pressure difference between the inside and outside of the container or an external impact. When the content liquid is a carbonated beverage, carbon dioxide in the content liquid may pass through the container wall and escape to the outside, and the concentration of dissolved carbon dioxide in the content liquid may decrease. The present invention has been made in view of the above circumstances, and has the following objects. (1) To provide a content liquid filling method capable of preventing outside air from entering a container filled with the content liquid. (2) To provide a content liquid filling method capable of preventing deformation of a container. (3) To provide a content liquid filling method capable of maintaining a high concentration of dissolved carbon dioxide in the content liquid when the content liquid is a carbonated beverage.
【０００４】[0004]
【課題を解決するための手段】本発明の内容液充填方法
は、合成樹脂製容器内に内容液を供給し、この容器の口
部にキャップを装着する内容液充填方法であって、合成
樹脂製容器内に、常温における容器内圧が常圧を越える
ように窒素を封入することを特徴とする。合成樹脂製容
器内に封入する窒素としては、液体窒素を用いるのが好
適である。合成樹脂製容器内に封入する窒素量は、常温
における容器内圧が０．３５〜３．５ｋｇ／ｃｍ2とな
るように設定するのが好ましい。本発明の閉止装置入り
飲料は、合成樹脂製容器と、その口部に装着されるキャ
ップとからなる閉止装置内に飲料が充填された閉止装置
入り飲料であって、閉止装置内に、常温における内圧が
常圧を越えるように窒素が封入されていることを特徴と
する。The content liquid filling method according to the present invention is a method for filling a content liquid into a synthetic resin container and attaching a cap to the mouth of the container. Nitrogen is sealed in the container so that the pressure inside the container at normal temperature exceeds the normal pressure. It is preferable to use liquid nitrogen as the nitrogen sealed in the synthetic resin container. The amount of nitrogen sealed in the synthetic resin container is preferably set so that the container internal pressure at room temperature is 0.35 to 3.5 kg / cm 2 . The beverage with a closure device of the present invention is a beverage with a closure device filled with a beverage in a closure device made of a synthetic resin container and a cap attached to the mouth thereof, and the inside of the closure device at room temperature. Nitrogen is sealed so that the internal pressure exceeds normal pressure.
【０００５】[0005]
【発明の実施の形態】以下、図１を参照して、本発明の
内容液充填方法の一実施形態を説明する。図１（ａ）お
よび図１（ｂ）に示すように、本実施形態の充填方法で
は、ＰＥＴなどの合成樹脂からなる合成樹脂製容器１
を、内容液供給ノズル２の下方に配置し、このノズル２
を通して、果汁飲料、茶飲料、炭酸飲料、アルコール飲
料等の内容液を容器１内に供給する。符号３は容器１内
に充填された内容液を示す。内容液の供給を行う際に
は、通常８０℃以上の高温条件下で内容液の充填を行う
熱充填を採用することができる。熱充填は、果汁飲料、
茶飲料などの充填に好適に用いることができる。また予
め殺菌処理した容器１およびキャップ５（後述）を用い
て常温下で行う常温無菌充填を採用することもできる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a content liquid filling method according to the present invention will be described with reference to FIG. As shown in FIGS. 1A and 1B, in the filling method according to the present embodiment, a synthetic resin container 1 made of a synthetic resin such as PET is used.
Is disposed below the content liquid supply nozzle 2, and this nozzle 2
Through the process, a content liquid such as a fruit juice beverage, a tea beverage, a carbonated beverage, an alcoholic beverage or the like is supplied into the container 1. Reference numeral 3 indicates a content liquid filled in the container 1. When the content liquid is supplied, hot filling in which the content liquid is charged under a high temperature condition of usually 80 ° C. or higher can be employed. Hot filling, juice drinks,
It can be suitably used for filling tea drinks and the like. Room temperature aseptic filling at room temperature using the container 1 and the cap 5 (described later) that have been sterilized in advance can also be employed.
【０００６】次いで、図１（ｃ）に示すように、内容液
３を充填した容器１を、液体窒素を供給する液体窒素供
給ノズル４の下方に配置し、図示せぬ液体窒素供給源か
ら供給された液体窒素（符号ＬＮで示す）を、液体窒素
供給ノズル４を通して容器１内に滴下する。液体窒素の
供給量は、後述の工程により容器１をキャップ５で閉止
した後の容器１内の圧力が、常温時（例えば２０〜２５
℃）において常圧を越えるように設定される。この窒素
供給量が上記範囲未満であると、外気の侵入や容器１の
変形を防ぐ効果が不十分となる。また内容液が炭酸飲料
である場合に、内容液中の溶存二酸化炭素濃度を高く維
持する効果が低下する。Next, as shown in FIG. 1C, the container 1 filled with the content liquid 3 is disposed below a liquid nitrogen supply nozzle 4 for supplying liquid nitrogen, and supplied from a liquid nitrogen supply source (not shown). The liquid nitrogen (denoted by a symbol LN) is dropped into the container 1 through the liquid nitrogen supply nozzle 4. The supply amount of the liquid nitrogen is such that the pressure in the container 1 after the container 1 is closed with the cap 5 in a later-described step is normal temperature (for example, 20 to 25).
(° C.). If the amount of supplied nitrogen is less than the above range, the effect of preventing intrusion of outside air and deformation of the container 1 becomes insufficient. In addition, when the content liquid is a carbonated beverage, the effect of maintaining a high concentration of dissolved carbon dioxide in the content liquid is reduced.
【０００７】液体窒素の供給量は、常温における容器１
の内圧が０．３５〜３．５ｋｇ／ｃｍ2（好ましくは
０．５〜２ｋｇ／ｃｍ2、さらに好ましくは１〜１．５
ｋｇ／ｃｍ2）となるように設定するのが好適である。
なお本明細書では常圧を０ｋｇ／ｃｍ2とする。この窒
素供給量が上記範囲未満であると、外気の侵入や容器１
の変形を防ぐ効果が低下する。また内容液が炭酸飲料で
ある場合に、内容液中の溶存二酸化炭素濃度を高く維持
する効果が低下する。また窒素供給量が上記範囲を越え
ると、容器１の内圧が高くなりすぎるため好ましくな
い。容器１内に供給された液体窒素の一部は気化し、容
器１内のヘッド空間（気相部分）１ａが窒素置換され、
このヘッド空間１ａが窒素で満たされる。[0007] The supply amount of liquid nitrogen is determined by the container 1 at room temperature.
Has an internal pressure of 0.35 to 3.5 kg / cm 2 (preferably 0.5 to 2 kg / cm 2 , more preferably 1 to 1.5 kg / cm 2) .
kg / cm 2 ).
In this specification, the normal pressure is 0 kg / cm 2 . If the nitrogen supply amount is less than the above range, intrusion of outside air and
The effect of preventing the deformation of the film decreases. In addition, when the content liquid is a carbonated beverage, the effect of maintaining a high concentration of dissolved carbon dioxide in the content liquid is reduced. On the other hand, if the supply amount of nitrogen exceeds the above range, the internal pressure of the container 1 becomes too high, which is not preferable. Part of the liquid nitrogen supplied into the container 1 is vaporized, and the head space (gas phase portion) 1a in the container 1 is replaced with nitrogen.
This head space 1a is filled with nitrogen.
【０００８】次いで、図１（ｄ）に示すように、キャッ
プ装着装置（図示略）を用いて、液体窒素供給後、直ち
にキャップ５を容器１の口部１ｂに装着し、容器１を密
封する。これによって上記窒素は容器１内に封入される
ことになる。キャップ５の装着後、容器１内の未気化の
液体窒素が気化し、容器１内の圧力が高められる。内容
液を容器１内に供給する際に熱充填を採用した場合に
は、外気による冷却によって容器１内の温度が低下する
に伴って容器１内の蒸気圧が低くなるが、上記窒素によ
って、容器１内の圧力は、常温時において常圧を越える
値となる。容器１の内圧は、上述の理由から、０．３５
〜３．５ｋｇ／ｃｍ2となることが好ましい。上記過程
によって、容器１とキャップ５とからなる閉止装置６内
に、内容液として飲料が充填された閉止装置入り飲料
（図１（ｄ）を参照）を得ることができる。Then, as shown in FIG. 1D, the cap 5 is immediately attached to the mouth 1b of the container 1 after the liquid nitrogen is supplied using a cap attaching device (not shown), and the container 1 is sealed. . As a result, the nitrogen is sealed in the container 1. After the cap 5 is mounted, the unvaporized liquid nitrogen in the container 1 is vaporized, and the pressure in the container 1 is increased. When hot filling is employed when the content liquid is supplied into the container 1, the vapor pressure in the container 1 decreases as the temperature in the container 1 decreases due to cooling by the outside air. The pressure in the container 1 exceeds the normal pressure at normal temperature. The internal pressure of the container 1 is 0.35 for the above-mentioned reason.
It is preferable to be 3.5 kg / cm 2 . Through the above process, a beverage (see FIG. 1 (d)) with a closing device filled with a beverage as a content liquid can be obtained in the closing device 6 including the container 1 and the cap 5.
【０００９】本実施形態の内容液充填方法によれば、合
成樹脂製容器１内に、常温における容器１の内圧が常圧
を越えるように窒素を封入するので、以下に示す効果を
得ることができる。 （１）窒素は、他のガスに比べ合成樹脂材料に対するガ
ス透過性が低い。例えば、ＰＥＴ（ポリエチレンテレフ
タレート）膜に対する酸素および二酸化炭素の透過速度
定数が、それぞれ２×１０-5、８×１０-5であるのに対
し、窒素の透過速度定数は、わずか８×１０-6である
（透過速度定数の単位はｇ／ｍ2／２４ｈ／ａｔｍ）。
すなわち、ＰＥＴ膜に対する窒素の透過性は、酸素の約
７分の１、二酸化炭素の約２７分の１であることにな
る。また窒素は、他のガスに比べ水に対する溶解性が低
い。例えば、水に対する酸素および二酸化炭素の溶解度
（０℃）は、それぞれ４．８ｍｌ／１００ｍｌ水、１７
１．３ｍｌ／１００ｍｌ水であるのに対し、窒素の水に
対する溶解度は、わずか３．８ｍｌ／１００ｍｌ水であ
る。本実施形態の方法では、低透過性かつ低水溶性のガ
スである窒素を用いるため、容器１内のガスが容器壁を
透過して外部に逃散するのを防ぐとともに、容器１内の
ガスが内容液に溶解するのを最小限に抑えることができ
る。このため、容器１内の圧力を高く維持することがで
きる。このため、外気が容器壁を透過して容器１内に侵
入するのを長期間にわたり防止することができる。よっ
て、熱充填を行う場合でも、外気中の酸素によって容器
１内の内容液が酸化し変質するのを未然に防ぎ、長期間
にわたって内容液の風味などの品質が低下するのを防止
することができる。従って、内容液の賞味期限を長く設
定することができる。According to the filling method of the present embodiment, nitrogen is sealed in the synthetic resin container 1 so that the internal pressure of the container 1 at room temperature exceeds the normal pressure, so that the following effects can be obtained. it can. (1) Nitrogen has lower gas permeability to synthetic resin materials than other gases. For example, while the transmission rate constants of oxygen and carbon dioxide for a PET (polyethylene terephthalate) membrane are 2 × 10 −5 and 8 × 10 −5 , respectively, the transmission rate constant of nitrogen is only 8 × 10 −6. (The unit of the transmission rate constant is g / m 2 / 24h / atm).
That is, the permeability of nitrogen to the PET film is about 1/7 of oxygen and about 27 times of carbon dioxide. Nitrogen has lower solubility in water than other gases. For example, the solubility (0 ° C.) of oxygen and carbon dioxide in water is 4.8 ml / 100 ml water and 17 ml, respectively.
The solubility of nitrogen in water is only 3.8 ml / 100 ml water, whereas 1.3 ml / 100 ml water. In the method of the present embodiment, since nitrogen, which is a gas having low permeability and low water solubility, is used, the gas in the container 1 is prevented from permeating through the container wall and escaping to the outside, and the gas in the container 1 Dissolution in the content liquid can be minimized. For this reason, the pressure in the container 1 can be maintained high. For this reason, it is possible to prevent outside air from penetrating into the container 1 through the container wall for a long time. Therefore, even in the case of performing hot filling, it is possible to prevent the content liquid in the container 1 from being oxidized and deteriorated by oxygen in the outside air beforehand, and to prevent the quality of the content liquid such as flavor from being deteriorated for a long period of time. it can. Therefore, the expiration date of the content liquid can be set long.
【００１０】（２）上述の通り、容器１の内圧を高く維
持することができるため、容器１（閉止装置６）の強度
を高めることができる。従って、熱充填を採用した場合
でも、容器１内外の圧力差や外部からの衝撃により容器
１が変形するのを長期間にわたって防ぐことができる。
このため、上記閉止装置入り飲料等の製品を複数積み重
ねて設置する場合に、この製品の積み置き段数を増やす
ことができ、設置スペースの効率的利用を図ることがで
きる。また容器１の変形を防ぐことができるため、容器
１自体の機械的強度を低く設定することができる。例え
ば容器１の肉厚を薄く設定することができ、容器１の軽
量化が可能となる。また容器１の製造コストを削減する
ことができる。(2) As described above, since the internal pressure of the container 1 can be kept high, the strength of the container 1 (closing device 6) can be increased. Therefore, even when the heat filling is employed, it is possible to prevent the container 1 from being deformed due to a pressure difference between the inside and outside of the container 1 or an external impact for a long period of time.
Therefore, when a plurality of products such as the beverages containing the closing device are stacked and installed, the number of stacking stages of the products can be increased, and the installation space can be efficiently used. Further, since the deformation of the container 1 can be prevented, the mechanical strength of the container 1 itself can be set low. For example, the thickness of the container 1 can be set thin, and the weight of the container 1 can be reduced. Further, the manufacturing cost of the container 1 can be reduced.
【００１１】（３）容器１内のヘッド空間１ａ内の窒素
は、低透過性かつ低水溶性であるため外部に逃散しにく
く、かつ内容液に溶解しにくい。このため、ヘッド空間
１ａ内の窒素濃度を高く維持することができる。よっ
て、内容液が炭酸飲料である場合において、内容液中の
溶存二酸化炭素が、ヘッド空間１ａを経由して容器壁を
透過し外部に逃散するのを防ぐことができる。従って、
内容液（炭酸飲料）中の溶存二酸化炭素濃度を高く維持
することができる。(3) Nitrogen in the head space 1a in the container 1 has a low permeability and a low water solubility, so that it hardly escapes to the outside and hardly dissolves in the content liquid. Therefore, the nitrogen concentration in the head space 1a can be kept high. Therefore, when the content liquid is a carbonated beverage, it is possible to prevent dissolved carbon dioxide in the content liquid from passing through the container wall via the head space 1a and escaping to the outside. Therefore,
The dissolved carbon dioxide concentration in the content liquid (carbonated beverage) can be kept high.
【００１２】（４）容器１に供給する窒素として、液体
窒素を用いることによって、この液体窒素の一部を、キ
ャップ５装着後に容器１内で気化させることができるよ
うになる。このため、窒素ガスを用いる場合に比べ、容
易な操作で、容器内圧が常圧を越えるように窒素を封入
することができる。また液体窒素は液状であるため取扱
いが容易であり、ノズル４を有する簡単な装置を用いて
滴下することにより容器１内に供給することができる。
このため、窒素封入操作が容易となる。(4) By using liquid nitrogen as nitrogen supplied to the container 1, a part of the liquid nitrogen can be vaporized in the container 1 after the cap 5 is attached. For this reason, nitrogen can be sealed so that the pressure inside the container exceeds the normal pressure by a simple operation as compared with the case where nitrogen gas is used. Since liquid nitrogen is in a liquid state, it is easy to handle, and can be supplied into the container 1 by dropping using a simple device having the nozzle 4.
For this reason, the nitrogen filling operation becomes easy.
【００１３】上記実施形態では、液体窒素を容器１内に
供給することによって、窒素の封入を行ったが、本発明
において窒素の封入方法はこれに限らず、高気圧条件下
で窒素ガスを容器１内に供給した後に、キャップ５の装
着を行う方法を採ることもできる。また内容液としては
果汁飲料等の飲料を例示したが、本発明はこれに限ら
ず、液状物全般に適用可能である。例えば調味料（醤油
等）、調理油（サラダ油等）、化粧品（化粧水等）など
に適用できる。In the above-described embodiment, nitrogen is sealed by supplying liquid nitrogen into the container 1. However, the method of sealing nitrogen is not limited to this in the present invention. After supply to the inside, a method of mounting the cap 5 may be adopted. In addition, a beverage such as a fruit juice beverage is exemplified as the content liquid, but the present invention is not limited to this, and can be applied to all liquid substances. For example, it can be applied to seasonings (such as soy sauce), cooking oil (such as salad oil), and cosmetics (such as lotion).
【００１４】[0014]
【実施例】（実施例１〜６）図１に示す手順に従って、
ＰＥＴ製容器１（容量１Ｌ）に、水０．９Ｌを内容液と
して熱充填により充填した。すなわち、８０℃に加温し
た水をノズル２を通して容器１内に供給し、この容器１
内に、液体窒素をノズル４を通して滴下した後、キャッ
プ５を容器口部１ｂに装着し、閉止装置入り飲料とし
た。液体窒素の滴下量は、常温における容器１の内圧が
表１に示す値となるように設定した。EXAMPLES (Examples 1 to 6) According to the procedure shown in FIG.
A PET container 1 (capacity: 1 L) was filled with 0.9 L of water as a content liquid by hot filling. That is, water heated to 80 ° C. is supplied into the container 1 through the nozzle 2 and the container 1
After dropping liquid nitrogen through the nozzle 4, the cap 5 was attached to the container opening 1b to obtain a beverage with a closing device. The amount of liquid nitrogen dropped was set such that the internal pressure of the container 1 at room temperature became a value shown in Table 1.
【００１５】（比較例１）液体窒素の供給を行わないこ
と以外は実施例１と同様にして容器１に水を充填し閉止
装置入り飲料を得た。常温における容器１の内圧を表１
に示す。Comparative Example 1 A container 1 was filled with water in the same manner as in Example 1 except that liquid nitrogen was not supplied, to obtain a beverage with a closure device. Table 1 shows the internal pressure of the container 1 at room temperature.
Shown in
【００１６】（実施例７）内容液を炭酸水とし、常温で
充填を行うこと以外は実施例１と同様にして閉止装置入
り飲料を得た。常温における容器１の内圧を表２に示
す。Example 7 A beverage with a closure device was obtained in the same manner as in Example 1 except that the content liquid was carbonated water and filling was performed at room temperature. Table 2 shows the internal pressure of the container 1 at room temperature.
【００１７】（比較例２）液体窒素の供給を行わないこ
と以外は実施例７と同様にして容器１に炭酸水を充填し
閉止装置入り飲料を得た。常温における容器１の内圧を
表２に示す。(Comparative Example 2) A container 1 was filled with carbonated water in the same manner as in Example 7 except that liquid nitrogen was not supplied, to obtain a beverage with a closure device. Table 2 shows the internal pressure of the container 1 at room temperature.
【００１８】上記実施例１〜７および比較例１、２の閉
止装置入り飲料を１ヶ月間放置した後、容器１のヘッド
空間１ａ内の酸素濃度を測定した。また、容器１の底部
に衝撃を加えたときの容器１の変形の有無を目視にて観
察した。また実施例７および比較例２については、内容
液中の二酸化炭素濃度を測定した。結果を表１および表
２に示す。After leaving the beverages in the closure devices of Examples 1 to 7 and Comparative Examples 1 and 2 for one month, the oxygen concentration in the head space 1a of the container 1 was measured. Further, the presence or absence of deformation of the container 1 when an impact was applied to the bottom of the container 1 was visually observed. In Example 7 and Comparative Example 2, the concentration of carbon dioxide in the content liquid was measured. The results are shown in Tables 1 and 2.
【００１９】[0019]
【表１】 [Table 1]
【００２０】[0020]
【表２】 [Table 2]
【００２１】表１および表２より、実施例の充填方法で
は、常温における内圧が常圧を越えるように窒素を容器
１内に封入することによって、容器１内の酸素濃度を低
く保つことができたことがわかる。また実施例の充填方
法では、外部からの衝撃によって容器１が変形するのを
防ぐことができたことがわかる。また内容液が炭酸水で
ある場合に、内容液中の溶存二酸化炭素濃度を高く維持
することができたことがわかる。From Tables 1 and 2, according to the filling method of the embodiment, the oxygen concentration in the container 1 can be kept low by filling nitrogen into the container 1 so that the internal pressure at room temperature exceeds the normal pressure. You can see that Further, it can be seen that the container 1 could be prevented from being deformed by the impact from the outside in the filling method of the example. Also, it can be seen that when the content liquid was carbonated water, the concentration of dissolved carbon dioxide in the content liquid could be kept high.
【００２２】[0022]
【発明の効果】以上説明したように、本発明の内容液充
填方法によれば、合成樹脂製容器内に、常温における容
器の内圧が常圧を越えるように窒素を封入するので、以
下に示す効果を得ることができる。 （１）合成樹脂製容器内の圧力を高く維持し、外気が容
器壁を透過して容器内に侵入するのを長期間にわたり防
止することができる。このため、熱充填を行う場合で
も、外気中の酸素によって容器内の内容液が酸化し変質
するのを未然に防ぎ、長期間にわたって内容液の品質低
下を防止することができる。従って、内容液の賞味期限
を長く設定することができる。 （２）容器の内圧を高く維持することができるため、熱
充填を採用した場合でも、容器内外の圧力差や外部から
の衝撃により容器が変形するのを防ぐことができる。 （３）内容液が炭酸飲料である場合において、内容液中
の溶存二酸化炭素が、容器壁を透過し外部に逃散するの
を防ぐことができる。従って、内容液中の溶存二酸化炭
素濃度を高く維持することができる。 （４）容器に供給する窒素として、液体窒素を用いるこ
とによって、容易な操作で、容器内圧が常圧を越えるよ
うに窒素を封入することができる。As described above, according to the liquid filling method of the present invention, nitrogen is sealed in a synthetic resin container so that the internal pressure of the container at room temperature exceeds normal pressure. The effect can be obtained. (1) The pressure in the synthetic resin container is kept high, and it is possible to prevent outside air from penetrating through the container wall and entering the container for a long time. For this reason, even when performing heat filling, it is possible to prevent the content liquid in the container from being oxidized and deteriorated by oxygen in the outside air, and to prevent the quality of the content liquid from being deteriorated for a long period of time. Therefore, the expiration date of the content liquid can be set long. (2) Since the internal pressure of the container can be maintained at a high level, even when heat filling is employed, the container can be prevented from being deformed due to a pressure difference between the inside and outside of the container or an external impact. (3) When the content liquid is a carbonated beverage, dissolved carbon dioxide in the content liquid can be prevented from permeating through the container wall and escaping to the outside. Therefore, the concentration of dissolved carbon dioxide in the content liquid can be kept high. (4) By using liquid nitrogen as the nitrogen to be supplied to the container, nitrogen can be sealed by an easy operation so that the internal pressure of the container exceeds normal pressure.
【図１】 本発明の内容液充填方法の一実施形態を説明
する工程図である。FIG. 1 is a process diagram illustrating one embodiment of a content liquid filling method of the present invention.
１・・・合成樹脂製容器、１ｂ・・・口部、２・・・内
容液供給ノズル、３・・・内容液、４・・・液体窒素供
給ノズル、５・・・キャップ、６・・・閉止装置DESCRIPTION OF SYMBOLS 1 ... Synthetic resin container, 1b ... Mouth part, 2 ... Content liquid supply nozzle, 3 ... Content liquid, 4 ... Liquid nitrogen supply nozzle, 5 ... Cap, 6 ...・ Closer
Claims (4)
の容器の口部にキャップを装着する内容液充填方法であ
って、 合成樹脂製容器内に、常温における容器内圧が常圧を越
えるように窒素を封入することを特徴とする内容液充填
方法。1. A method for filling a liquid content into a synthetic resin container and mounting a cap on the mouth of the container, wherein the pressure inside the synthetic resin container at normal temperature is equal to the normal pressure. A method of filling a content liquid, wherein nitrogen is sealed so as to exceed the content.
て、液体窒素を用いることを特徴とする請求項１記載の
内容液充填方法。2. The method according to claim 1, wherein liquid nitrogen is used as the nitrogen sealed in the synthetic resin container.
常温における容器内圧が０．３５〜３．５ｋｇ／ｃｍ2
となるように設定することを特徴とする請求項１または
２記載の内容液充填方法。3. The amount of nitrogen sealed in a container made of synthetic resin,
Container pressure at room temperature is 0.35 to 3.5 kg / cm 2
The method according to claim 1 or 2, wherein the setting is made such that
るキャップとからなる閉止装置内に飲料が充填された閉
止装置入り飲料であって、 閉止装置内に、常温における内圧が常圧を越えるように
窒素が封入されていることを特徴とする閉止装置入り飲
料。4. A beverage in a closure device in which a beverage is filled in a closure device comprising a synthetic resin container and a cap attached to the mouth thereof, wherein the internal pressure at normal temperature is normal pressure in the closure device. Characterized by being filled with nitrogen so as to exceed the pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001068483A JP2002264912A (en) | 2001-03-12 | 2001-03-12 | Method of filling content liquid and beverage in closure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001068483A JP2002264912A (en) | 2001-03-12 | 2001-03-12 | Method of filling content liquid and beverage in closure device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002264912A true JP2002264912A (en) | 2002-09-18 |
Family
ID=18926670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001068483A Pending JP2002264912A (en) | 2001-03-12 | 2001-03-12 | Method of filling content liquid and beverage in closure device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002264912A (en) |
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| JP2005350090A (en) * | 2004-06-09 | 2005-12-22 | Mitsukan Group Honsha:Kk | Method for filling liquid food in thermoplastic resin-made container |
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| WO2007007453A1 (en) * | 2005-07-07 | 2007-01-18 | Toyo Seikan Kaisha, Ltd. | Process and apparatus for producing beverage filled into container |
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| JP2006137463A (en) * | 2004-11-12 | 2006-06-01 | Toyo Seikan Kaisha Ltd | Manufacturing method and apparatus for drink bottled in plastic bottle |
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