JPH04201814A - Method for controlling internal pressure of vessel by means of mixed gas - Google Patents
Method for controlling internal pressure of vessel by means of mixed gasInfo
- Publication number
- JPH04201814A JPH04201814A JP32542390A JP32542390A JPH04201814A JP H04201814 A JPH04201814 A JP H04201814A JP 32542390 A JP32542390 A JP 32542390A JP 32542390 A JP32542390 A JP 32542390A JP H04201814 A JPH04201814 A JP H04201814A
- Authority
- JP
- Japan
- Prior art keywords
- mixed gas
- container
- carbon dioxide
- gas
- vessel
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000007789 gas Substances 0.000 claims abstract description 53
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 32
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 32
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 8
- 238000007664 blowing Methods 0.000 abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 abstract 2
- 235000013305 food Nutrition 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 230000001954 sterilising effect Effects 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 235000021485 packed food Nutrition 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 235000012041 food component Nutrition 0.000 description 1
- 239000005417 food ingredient Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 235000021055 solid food Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Vacuum Packaging (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、食品を密封した容器の内圧を混合ガスにより
制御する方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of controlling the internal pressure of a sealed container containing food using a mixed gas.
（従来の技術）
プラスチック成形容器や缶や袋等の容器に充填して密封
した容器詰食品は、内部に充填した食品が腐敗変敗した
場合、腐敗菌が発するガスにより容器内部が陽圧になり
、蓋等が膨らむ現象を呈し、それにより内容物の腐敗を
識別することができる。(Conventional technology) For packaged foods that are filled and sealed in containers such as plastic molded containers, cans, and bags, if the food filled inside spoils and deteriorates, the gas emitted by putrefying bacteria creates a positive pressure inside the container. This causes the lid to swell, which can be used to identify spoilage of the contents.
一方、プラスチック容器詰食品は、長期保存を可能にす
るため通常レトルト殺菌等の加熱殺菌を行なっているが
、加熱殺菌中に食品成分から二酸化炭素が生成されてヘ
ッドスペースに溜り、その分容器ヘッドスペースが陽圧
となって蓋が膨らみ、内容物が腐敗したものと区別がつ
かなくなることがある。On the other hand, food packed in plastic containers is usually heat sterilized by retort sterilization to enable long-term storage, but during heat sterilization carbon dioxide is generated from food ingredients and accumulates in the head space, causing Positive pressure in the space can cause the lid to swell, making the contents indistinguishable from spoiled food.
そのため、従来、容器詰食品の場合、加熱殺菌中に内容
物から生成゛される二酸化炭素による蓋の膨らみを防止
するために、レトルト殺菌後容器ヘッドスペースが負圧
になるように、密封する際に容器内圧を制御する手段を
講じている。For this reason, conventionally, in the case of packaged foods, in order to prevent the lid from bulging due to carbon dioxide generated from the contents during heat sterilization, when sealing the container, after sterilizing the retort, the head space of the container is under negative pressure. Measures are taken to control the internal pressure of the container.
従来、そのための内圧制御方法としては、（イ）容器内
を一旦真空にしてから、不活性ガスである窒素ガスを容
器内に吹き込み、大気圧前に密封する方法、（ロ）容器
内にスチームを吹き込むと共に窒素ガスを吹き込む方法
、（ハ）ホットパックの場合において、窒素ガスを吹き
込む方法が行われている。Conventionally, the internal pressure control methods for this purpose include (a) once creating a vacuum inside the container, then blowing inert nitrogen gas into the container and sealing it before atmospheric pressure, and (b) adding steam inside the container. (c) In the case of a hot pack, a method of blowing nitrogen gas is used.
（発明が解決しようとする問題点）
前記従来の密封容器の内圧制御方法において、（イ）の
方法はバッチで行なうので効率が悪い欠点があり、また
（口）の方法は蒸気により内圧のコントロールが可能で
あるが、大掛かりな設備を必要とし、設備費がかかりコ
スト高になる欠点があり、さらに（ハ）の方法は内容物
が固体食品である場合、内容品を加熱するための特別の
装置が必要となり、前記同様に設備費がかかりコスト高
になる欠点がある。(Problems to be Solved by the Invention) Among the conventional methods for controlling the internal pressure of a sealed container, the method (a) has the drawback of low efficiency because it is carried out in batches, and the method (b) uses steam to control the internal pressure. is possible, but it requires large-scale equipment and has the drawback of increasing equipment costs and costs.Furthermore, method (c) requires special equipment for heating the contents when the contents are solid foods. This method requires a device, and as mentioned above, there is a drawback that the equipment cost is high and the cost is high.
本発明は、前記従来の密封容器の内圧制御方法の欠点を
解消しようとするものであり、正確に且つ効率良く密封
容器の内圧制御ができ、しかも簡単な設備で容易にでき
、コストの低減化を図ることができる密封容器の内圧制
御方法を提供することを目的とする。The present invention aims to eliminate the drawbacks of the conventional method for controlling the internal pressure of a sealed container, and it is possible to accurately and efficiently control the internal pressure of a sealed container, and it can be easily performed with simple equipment, reducing costs. An object of the present invention is to provide a method for controlling the internal pressure of a sealed container.
（問題点を解決するための手段）
本発明者は、二酸化炭素が食品に溶解し易いことに着目
し、密封直前にヘッドスペースに二酸化炭素を吹き込む
という逆の発想をして研究を重ねた結果、二酸化炭素を
容器ヘッドスペースに吹き込むことによって、確実に減
圧状態が得られ、二酸化炭素の量を制御することにより
、容器内圧の制御ができることを知得し、本発明に到達
したものである。(Means for solving the problem) The present inventor focused on the fact that carbon dioxide easily dissolves in food, and as a result of repeated research with the opposite idea of blowing carbon dioxide into the head space immediately before sealing. The present invention was achieved based on the knowledge that by blowing carbon dioxide into the head space of a container, a reduced pressure state can be reliably obtained, and that by controlling the amount of carbon dioxide, the internal pressure of the container can be controlled.
即ち、本発明は、容器詰食品の密封直前に、二酸化炭素
と窒素ガスの混合ガスを容器ヘッドスペースに吹き込み
、二酸化炭素と窒素ガスの割合を変えることによって、
容器内圧を制御するようにしたことを特徴とする混合ガ
スによる内圧制御方法によって前記問題点を解決するこ
とができた。That is, the present invention blows a mixed gas of carbon dioxide and nitrogen gas into the container headspace immediately before sealing the packaged food to change the ratio of carbon dioxide and nitrogen gas.
The above-mentioned problems could be solved by a method of controlling internal pressure using a mixed gas, which is characterized in that the internal pressure of the container is controlled.
（作用）
二酸化炭素は食品に溶解し易く、容器ヘッドスペース内
に充填された二酸化炭素は、密封後内容物内に吸収され
、その分ヘッドスペース内の圧力が減少して負圧になり
、ヘッドスペース州減少し、容器の蓋に凹みの張りを発
生させることができる。(Function) Carbon dioxide is easily dissolved in food, and the carbon dioxide filled in the head space of the container is absorbed into the contents after sealing, and the pressure in the head space decreases to negative pressure, causing the head space to become negative. Space can cause tension to decrease and dent the lid of the container.
従って、二酸化炭素の量を制御することにより、容器内
圧が制御できるが、食品の酸素による酸化劣化等の悪影
響を排除するためには、ヘッドスペースの空気を排除す
ることが望ましく、そのため本発明では、窒素ガスとの
混合ガスにすることによって、二酸化炭素の量にとられ
れず容器ヘッドスペースの空気を混合ガスと置換するこ
とができ、容器の内圧制御と同時に食品の酸素による悪
影響を排除するという、二重の効果を同時に達成するこ
とができる。Therefore, by controlling the amount of carbon dioxide, the internal pressure of the container can be controlled, but in order to eliminate the adverse effects such as oxidative deterioration of food due to oxygen, it is desirable to eliminate the air in the head space. By mixing the gas with nitrogen gas, it is possible to replace the air in the head space of the container with the mixed gas regardless of the amount of carbon dioxide, controlling the internal pressure of the container and eliminating the negative effects of oxygen in the food. , dual effects can be achieved at the same time.
そして、単に二酸化炭素と窒素ガスの混合割合を変える
ことで、内圧制御が容易に且つ確実にでき、また二種の
ガスの流量は容易に観察できるため、その管理も簡単で
常に一定の減圧度を保つことができる。By simply changing the mixing ratio of carbon dioxide and nitrogen gas, the internal pressure can be easily and reliably controlled, and the flow rate of the two gases can be easily observed, making it easy to manage and always maintain a constant degree of depressurization. can be kept.
（実施例）
以下、本発明の実施例を図面に基づいて詳細に説明する
。(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.
第１図は本発明の方法を実施するための装置の一例を示
し、該装置によって内容物を充填した成形容器に本発明
方法を実施した場合について説明する。FIG. 1 shows an example of an apparatus for carrying out the method of the present invention, and a case where the method of the present invention is carried out using the apparatus on a molded container filled with contents will be explained.
前工程で内容物が充填された成形容器１は、コンベヤ２
のパケットに支持されて搬送され、混合ガス充填装置５
の混合ガス吹き出しユニット６が配置された下部に達す
ると、該吹き出しユニット６から連続的に吹き出してい
る混合ガスが開口内部に吹き込まれる。それにより、容
器ヘッドスペースの空気が混合ガスに置換される。吹き
出しユニット６の下流側には、蓋材フィルム７が案内ロ
ーラ群８に案内されて容器搬送方向に沿って繰り出され
ており、混合ガスが充填された容器ｌの開口部を覆って
、容器内への外部からの空気の流入を防ぎながら容器を
搬送し、下流側に配置されているヒートシール装置９で
、該蓋材フィルムを容器開口部のフランジ面にヒートシ
ールし、その後、その下流で図示しないトリミング装置
により蓋材のトリミングを行なう。The molded container 1 filled with the contents in the previous process is transferred to the conveyor 2
The mixed gas filling device 5
When reaching the lower part where the mixed gas blowing unit 6 is arranged, the mixed gas continuously blown from the blowing unit 6 is blown into the opening. Thereby, the air in the container headspace is replaced by the mixed gas. On the downstream side of the blow-off unit 6, a lidding film 7 is guided by a group of guide rollers 8 and is fed out along the container transport direction, covering the opening of the container l filled with mixed gas and discharging the inside of the container. The container is transported while preventing air from entering from the outside, and the lidding film is heat-sealed to the flange surface of the container opening using the heat sealing device 9 located downstream. The lid material is trimmed by a trimming device (not shown).
前記混合ガス充填装置５は、ガス混合ユニットｌ○と混
合ガス吹き出しユニット６がら構成されている。ガス混
合ユニット１０は、二酸化炭素ボンベ１１及び窒素ガス
ボンベ１２に接続され、夫々のボンベからのガス流量を
制御して混合率を調節して両ガスを混合し、混合ガスを
吹き呂しユニット６に送るための装置であり、夫々のガ
スの流量を知るための流量計１３．１４及び流量を調節
する流量調節弁１５．１６を有し、それらの弁を調節す
ることにより、混合割合を簡単に制御できる。なお、１
７．１８は夫々のガスボンベの元バルブである。The mixed gas filling device 5 includes a gas mixing unit l○ and a mixed gas blowing unit 6. The gas mixing unit 10 is connected to a carbon dioxide cylinder 11 and a nitrogen gas cylinder 12, controls the gas flow rate from each cylinder, adjusts the mixing ratio, mixes both gases, and blows the mixed gas to the unit 6. It is a device for sending gases, and has a flowmeter 13.14 for knowing the flow rate of each gas and a flow rate adjustment valve 15.16 for adjusting the flow rate, and by adjusting these valves, the mixing ratio can be easily adjusted. Can be controlled. In addition, 1
7.18 is the original valve of each gas cylinder.
混合ガス吹き出しユニット６は、図示のように容器開口
部を覆う程度の面積を有し、混合ガス吹き出し穴１９が
多数形成された平坦な底板２０を有するチャンバー状に
形成され、上部に前記ガス混合ユニット１０からガス供
給管２１が連結され、混合ガス吹き出し穴１９からほぼ
均一に混合ガスが吹き出されるようになっている。As shown in the figure, the mixed gas blowing unit 6 is formed into a chamber shape with a flat bottom plate 20 having an area large enough to cover the opening of the container and in which a large number of mixed gas blowing holes 19 are formed. A gas supply pipe 21 is connected to the unit 10, and the mixed gas is blown out almost uniformly from the mixed gas blowing hole 19.
以上のような装置によって行なった、本発明の実施例を
次に示す。Examples of the present invention carried out using the above-described apparatus will be described below.
ｒＪ１
容器：ポリプロピレンとスチール箔との積層複合材で成
形された成形容器で、滴注
内容量が１０５ｍＱ
内容物：水
充填量：５０グラム、従って、充填後の容器ヘッドスペ
ース量は５５ｍＱである。rJ1 Container: A molded container made of a laminated composite material of polypropylene and steel foil, with a dripping capacity of 105 mQ.Contents: Water filling amount: 50 grams, therefore, the container headspace amount after filling is 55 mQ.
第１表
上記の条件で充填された容器に、第１表に示すように混
合ガスの二酸化炭素と窒素ガスの割合を変えて充填し、
所定時間経過後に容器ヘッドスペース量を測定した結果
、第１表に示すようになった。Table 1: The container filled under the above conditions was filled with different ratios of carbon dioxide and nitrogen gas in the mixed gas as shown in Table 1.
The container headspace amount was measured after a predetermined period of time, and the results are shown in Table 1.
上表から明らかなように、混合ガスが窒素ガス単独であ
る場合は、ヘッドスペースの変化はなかったが、二酸化
炭素の割合を増やすにつれ、ヘッドスペース量の減少が
顕著であり、窒素ガス／二酸化炭素が３／１７（Ｑ／分
）になるとヘッドスペースが約３６％も減少し、二酸化
炭素の量を制御することによって、確実に容器内圧がコ
ントロールでき、それにより蓋材の張り具合もコントロ
ールできることが確認された。As is clear from the table above, when the mixed gas was nitrogen gas alone, there was no change in headspace, but as the proportion of carbon dioxide was increased, the amount of headspace decreased significantly, and When the carbon content is 3/17 (Q/min), the headspace decreases by about 36%, and by controlling the amount of carbon dioxide, the internal pressure of the container can be reliably controlled, and the tension of the lid material can also be controlled accordingly. was confirmed.
なお、上記の全ての場合において、ヘッドスペースの酸
素濃度は１．５％以下であった。この値は容器内の食品
の酸化劣化に影響を与えない値である。Note that in all of the above cases, the oxygen concentration in the headspace was 1.5% or less. This value does not affect the oxidative deterioration of the food inside the container.
スＪＪＬλ
容器：実施例１と同じ
内容物：焼鳥調理食品
充填量＝５０グラム、その時のヘッドスペース量は５６
ｍｌであった。Container: Same as Example 1 Contents: Yakitori cooked food filling amount = 50 grams, head space amount at that time was 56
It was ml.
上記の条件で充填された容器に、第２表に示すように混
合ガスの二酸化炭素と窒素ガスの割合を変えて充填して
容器を密封し、１２０℃で２０分間殺菌し、冷却後のヘ
ッドスペース量を測定した結果、第２表に示すようにな
った。また、この結果をグラフに表すと第２図に示すよ
うになった。The container filled under the above conditions was filled with a mixed gas of varying ratios of carbon dioxide and nitrogen gas as shown in Table 2, the container was sealed, sterilized at 120°C for 20 minutes, and the head after cooling. The results of measuring the amount of space are shown in Table 2. Furthermore, this result was expressed in a graph as shown in Fig. 2.
上記実施例において、Ｎ、／Ｃｏヨが２０１０の場合は
、初期ヘッドスペース５６ｍＱから殺菌後は５８ｒ＋＋
Ｑに増加しているから、蓋材は凸ぎみになった。これは
、内容物から二酸化炭素が生成されたことによる。本実
施例においても前記実施例と同様に二酸化炭素の割合の
増加に応じてヘッドスペースが減少（即ち内圧の減少）
していることが明確に観察された。また、混合ガスが内
容物の味覚に及ぼす影響を調べた結果、二酸化炭素量が
かなり増大すると、内容物の味覚に変化をもたすことが
観察された。In the above example, when N and /Co are 2010, the initial head space is 56 mQ and the after sterilization is 58 r++
Since it has increased to Q, the lid material has become slightly convex. This is due to the production of carbon dioxide from the contents. In this example, as in the previous example, the head space decreases (i.e., the internal pressure decreases) as the proportion of carbon dioxide increases.
It was clearly observed that Furthermore, as a result of investigating the effect of mixed gas on the taste of the contents, it was observed that when the amount of carbon dioxide increases considerably, the taste of the contents changes.
以上の観察結果から、本実施例の場合、蓋材の凹みと内
容物の品質の関係より適切な混合ガスの割合は、Ｎ、／
Ｃｏ、が１７／３〜１０／１０程度あり、保存中の二酸
化炭素の増加分を考えると１５１５〜１０／１０の割合
が最適であると考えられる。From the above observation results, in the case of this example, the appropriate ratio of mixed gas is N, /
Co is about 17/3 to 10/10, and considering the increase in carbon dioxide during storage, a ratio of 1515 to 10/10 is considered to be optimal.
以上、内容物が液体の場合と固形物の場合の代表例とし
て、２つの実施例を示したが、これらの実施例から明ら
かなように、本発明の方法は、内容物が液体、固体を問
わずあらゆる形態の内容物において、確実に且つ正確に
容器内圧が制御できることが判明した。また、前記実施
例では、成形容器の場合を示したが、本発明の方法は、
成形容器に限らず、缶、袋、等ヘッドスペースの生じる
容器詰食品であれば、容器の形態を問わず適用できるこ
とは云うまでもない。Above, two examples have been shown as representative examples in which the contents are liquid and solid, but as is clear from these examples, the method of the present invention is suitable for cases where the contents are liquid or solid. It has been found that the internal pressure of the container can be controlled reliably and accurately for all types of contents. In addition, although the above example shows the case of a molded container, the method of the present invention
Needless to say, the present invention is applicable not only to molded containers but also to cans, bags, and other packaged foods that have a head space, regardless of the form of the container.
なお、混合ガスの二酸化炭素と窒素ガスの最適な割合は
必ずしも一律でなく、食品の種類、ヘッドスペースの量
（ヘッドスペースが多い程、二酸化炭素の割合は減らせ
る）、容器形状（コツプ状かトレイ状かによっても異な
る）等に影響する。Note that the optimal ratio of carbon dioxide and nitrogen gas in the mixed gas is not necessarily uniform, and varies depending on the type of food, the amount of head space (the more head space, the lower the ratio of carbon dioxide), and the shape of the container (pop-shaped or round). (depending on the tray shape) etc.
従って、それらの条件に応じて、最適割合を選択すれば
良い。Therefore, the optimum ratio may be selected according to those conditions.
（効果）
本発明は、以上のような構成からなり、次のような格別
の効果を奏する。(Effects) The present invention has the above-described configuration and provides the following special effects.
単に二酸化炭素と窒素ガスの混合割合を変えることで、
内圧制御が容易に且つ確実にできる。そして、窒素ガス
との混合ガスであるので、二酸化炭素の量に関係なく容
器ヘッドスペースの空気を混合ガスと置換することがで
き、容器の内圧制御と同時に食品の酸素による悪影響を
排除することができる。By simply changing the mixing ratio of carbon dioxide and nitrogen gas,
Internal pressure can be controlled easily and reliably. Since it is a mixed gas with nitrogen gas, it is possible to replace the air in the container headspace with the mixed gas regardless of the amount of carbon dioxide, and simultaneously control the internal pressure of the container and eliminate the negative effects of oxygen in the food. can.
二酸化炭素と窒素ガスの混合装置を取り付けるのみで簡
単に実施できるので、設備費が安価である。The equipment cost is low because it can be easily implemented by simply installing a mixing device for carbon dioxide and nitrogen gas.
また二種のガスの流量は容易に観察できるため、その管
理も簡単で常に一定の減圧度を保つことができる。Furthermore, since the flow rates of the two types of gas can be easily observed, their management is simple and a constant degree of vacuum can be maintained at all times.
第１図は本発明を実施するための装置の一例を示す概略
図、第２図は第１図のＡ−Ａ断面図、第３図は第２実施
例における混合ガスの窒素ガスと二酸化酸素の混合割合
とヘッドスペース量との関係を示すグラフである。
ｌ：容器 ２：コンベヤ ５：混合ガス充填装置
６：混合ガス吹き出しユニット７：蓋材フィルム
９：ヒートシール装置１０：ガス混合ユニット １１
：二酸化炭素ボンベ １２：窒素ガスボンベ １３
．１４：流量計 １５．１６：流量調節弁 １９：
混合ガス吹き出し穴
特許出願人 東洋製罐株式会社
出願人代理人 弁理士 佐藤文男
（他２名）
第 ２ １ＡFIG. 1 is a schematic diagram showing an example of an apparatus for carrying out the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. 3 is a mixed gas of nitrogen gas and oxygen dioxide in the second embodiment. It is a graph showing the relationship between the mixing ratio and the amount of headspace. l: Container 2: Conveyor 5: Mixed gas filling device
6: Mixed gas blowing unit 7: Lid film
9: Heat sealing device 10: Gas mixing unit 11
: Carbon dioxide cylinder 12: Nitrogen gas cylinder 13
．． 14: Flowmeter 15.16: Flow rate control valve 19:
Mixed gas outlet hole patent applicant Toyo Seikan Co., Ltd. Applicant agent Patent attorney Fumio Sato (and 2 others) No. 2 1A
Claims (1)
と窒素ガスの混合ガスを容器ヘッドスペースに吹き込み
、該混合ガスの二酸化炭素と窒素ガスの割合を変えるこ
とによって、容器内圧を制御するようにしたことを特徴
とする混合ガスによる容器内圧の制御方法。1) Immediately before sealing the filled container, a mixed gas of carbon dioxide and nitrogen gas is blown into the head space of the container, and the internal pressure of the container is controlled by changing the ratio of carbon dioxide and nitrogen gas in the mixed gas. A method for controlling the internal pressure of a container using a mixed gas, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2325423A JPH0790847B2 (en) | 1990-11-29 | 1990-11-29 | Control method of vessel internal pressure by mixed gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2325423A JPH0790847B2 (en) | 1990-11-29 | 1990-11-29 | Control method of vessel internal pressure by mixed gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04201814A true JPH04201814A (en) | 1992-07-22 |
| JPH0790847B2 JPH0790847B2 (en) | 1995-10-04 |
Family
ID=18176690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2325423A Expired - Fee Related JPH0790847B2 (en) | 1990-11-29 | 1990-11-29 | Control method of vessel internal pressure by mixed gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0790847B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06135415A (en) * | 1992-10-27 | 1994-05-17 | Toyo Seikan Kaisha Ltd | Method and apparatus for automatically monitoring carbon dioxide gas concentration in control of container internal pressure with mixed gas |
| JPH07329929A (en) * | 1994-06-02 | 1995-12-19 | Godo Ink Kk | Method and apparatus for filling and packaging printing ink, paint, etc. and container for filling and packaging |
| JP2015009872A (en) * | 2013-07-01 | 2015-01-19 | 東罐興業株式会社 | Manufacturing method and manufacturing apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63162426A (en) * | 1986-12-18 | 1988-07-06 | 東洋製罐株式会社 | Method of filling canned drink |
-
1990
- 1990-11-29 JP JP2325423A patent/JPH0790847B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63162426A (en) * | 1986-12-18 | 1988-07-06 | 東洋製罐株式会社 | Method of filling canned drink |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06135415A (en) * | 1992-10-27 | 1994-05-17 | Toyo Seikan Kaisha Ltd | Method and apparatus for automatically monitoring carbon dioxide gas concentration in control of container internal pressure with mixed gas |
| JPH07329929A (en) * | 1994-06-02 | 1995-12-19 | Godo Ink Kk | Method and apparatus for filling and packaging printing ink, paint, etc. and container for filling and packaging |
| JP2015009872A (en) * | 2013-07-01 | 2015-01-19 | 東罐興業株式会社 | Manufacturing method and manufacturing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0790847B2 (en) | 1995-10-04 |
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