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JPS6326011B2 - - Google Patents
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JPS6326011B2 - - Google Patents

Info

Publication number
JPS6326011B2
JPS6326011B2 JP55145110A JP14511080A JPS6326011B2 JP S6326011 B2 JPS6326011 B2 JP S6326011B2 JP 55145110 A JP55145110 A JP 55145110A JP 14511080 A JP14511080 A JP 14511080A JP S6326011 B2 JPS6326011 B2 JP S6326011B2
Authority
JP
Japan
Prior art keywords
packaging container
sealed
container
oxygen gas
radiation
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.)
Expired
Application number
JP55145110A
Other languages
Japanese (ja)
Other versions
JPS5777420A (en
Inventor
Hirotaka Tsunoda
Akira Hayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP14511080A priority Critical patent/JPS5777420A/en
Publication of JPS5777420A publication Critical patent/JPS5777420A/en
Publication of JPS6326011B2 publication Critical patent/JPS6326011B2/ja
Granted legal-status Critical Current

Links

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、無菌性で、かつ、容体内部の臭気の
低い包装容体を得るための包装容体の滅菌処理方
法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for sterilizing a packaging container to obtain a packaging container that is sterile and has a low odor inside the container.

〔従来の技術〕[Conventional technology]

内周面層がプラスチツクフイルム層で形成され
ている包装容体を滅菌処理する方法としては、包
装容体にそのままγ線や電子線等の放射線を照射
する方法や、エチレンオキサイドを利用する滅菌
処理方法等が使用されている。
Methods for sterilizing a packaging container whose inner surface layer is made of a plastic film layer include a method of directly irradiating the packaging container with radiation such as gamma rays and electron beams, and a method of sterilization using ethylene oxide. is used.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

ところで、前記した従来の包装容体の滅菌処理
方法のうちの前者のγ線や電子線等の放射線を照
射する方法は、包装容体の内周面層が、放射線の
照射によつて分解する性質を有する成分を含有し
ている場合、すなわち、包装容体の内周面層が、
例えば、ポリプロピレンや塩素含有樹脂等による
プラスチツクフイルム層で形成されている場合
や、熱接着性を有する内周面層として汎用されて
いるポリエチレン系樹脂、例えば、低密度ポリエ
チレン、ポリエチレン−酢酸ビニル共重合体、ア
イオノマー等の樹脂で形成されている場合には、
これらの内周面層を構成している樹脂に、架橋、
分解等が発生し、容体内部に異臭が発生するた
め、これが容体内部の内填物に移行するという欠
点を有している。
By the way, in the former method of irradiating radiation such as gamma rays or electron beams among the conventional methods for sterilizing packaging containers described above, the inner circumferential surface layer of the packaging container has the property of being decomposed by radiation irradiation. In other words, when the inner peripheral surface layer of the packaging container contains a component that has
For example, it may be formed of a plastic film layer made of polypropylene or chlorine-containing resin, or it may be made of polyethylene resin, which is commonly used as an inner peripheral surface layer with thermal adhesive properties, such as low-density polyethylene, polyethylene-vinyl acetate copolymer, etc. If it is made of resin such as coalescence or ionomer,
The resin that makes up these inner peripheral layers is cross-linked,
This has the disadvantage that decomposition occurs and a foreign odor is generated inside the container, which is transferred to the filling inside the container.

また、後者のエチレンオキサイドを利用する滅
菌処理方法は、処理中に包装容体が破裂すること
があり、また、エチレンオキサイドに対して高い
反応性を有する包装容体には利用することが出来
なく、更には、容体内部に内填される内填物の種
類によつては、エチレンオキサイドを嫌うものが
ある等の欠点を有している。
In addition, the latter sterilization method using ethylene oxide may cause the packaging to rupture during processing, and cannot be used for packaging that is highly reactive to ethylene oxide. However, depending on the type of filler packed inside the container, some have drawbacks such as the fact that they dislike ethylene oxide.

これに対して本発明方法は、前記包装容体にそ
のままγ線や電子線等の放射線を照射する方法
や、あるいは、エチレンオキサイドを使用する方
法等からなる従来の滅菌処理方法における欠点を
悉く解消するもので、滅菌処理によつて包装容体
に強度低下等の弊害がもたらされるようなことが
なく、しかも、容体内部における臭気の低い無菌
性の包装容体を得る方法を提供するものである。
In contrast, the method of the present invention eliminates all the drawbacks of conventional sterilization methods, such as methods of directly irradiating the packaging container with radiation such as gamma rays and electron beams, or methods of using ethylene oxide. The present invention provides a method for obtaining a sterile packaging container which does not have any harmful effects such as a decrease in strength due to sterilization treatment and has a low odor inside the container.

〔問題点を解決するための手段〕 本発明の包装容体の滅菌処理方法は、内周面層
がプラスチツクフイルム層で形成されており、し
かも、酸素ガスバリヤー性を具備する包装容体を
滅菌処理するものであり、前記包装容体の内部
に、不活性ガスを充填、密封するか、または、前
記包装容体の内部に、脱酸素剤を封入、密封する
か、あるいは、これらの両手段を併用することに
よつて、内部に酸素ガスが殆ど存在しない状態に
なつている密封包装容体を得る工程と、大気中
で、前記密封包装容体に、Co60を線源とする放射
線を照射する工程とからなるものである。
[Means for Solving the Problems] The method for sterilizing a packaging container of the present invention sterilizes a packaging container whose inner peripheral surface layer is formed of a plastic film layer and which has oxygen gas barrier properties. The packaging container is filled with an inert gas and sealed, or the packaging container is filled with an oxygen absorber and sealed, or both of these methods are used in combination. a step of obtaining a sealed packaging container in which almost no oxygen gas exists inside the container; and a step of irradiating the sealed packaging container with radiation using Co 60 as a radiation source in the atmosphere. It is something.

前記構成からなる本発明の包装容体の滅菌処理
方法における前段工程は、プラスチツクフイルム
層で構成されている内周面層を有しており、しか
も、酸素ガスバリヤー性を具備する包装容体、す
なわち、例えば、酸素ガス透過率が、100cc/
m2・24hr以下、好ましくは20cc/m2・24hr以下の
酸素ガスバリヤー性を有する合成樹脂成形容体
や、例えばアルミニウム箔、アルミニウム蒸着フ
イルム、ポリアミドフイルム、塩化ビニリデンフ
イルム、塩化ビニリデンコートフイルム、ポリビ
ニルアルコールフイルムあるいはこれらを含む積
層シート等による酸素ガス透過率100cc/m2
24hr以下、好ましくは20cc/m2・24hr以下の酸素
ガスバリヤー性を有する包装材料を製袋した包装
袋等の包装容体の容体内部に、不活性ガスを性を
封入して該容体内部の酸素ガスを不活性ガスで置
換し、密封するか、あるいは前記と同様の包装容
体の容体内部に、該容体内部の酸素ガスを十分に
吸収し得る能力を有する脱酸素剤、例えばハイド
ロサルフアイトを主剤とし、これに水酸化カルシ
ウム、活性炭、水等を併用したもの、亜硫酸塩と
活性炭、炭化鉄とアルカリ硫化物、活性炭とアル
カリ硫化物等を封入、密封し、容体内部の酸素ガ
スを前記脱酸素剤に吸収せしめるか、または同じ
く前記と同様の包装容体の容体内部に不活性ガス
を封入するとともに、該容体内部に脱酸素剤を封
入、密封するものであり、経済的にしかも手際良
く、内部に酸素ガスが殆ど存在していない状態の
包装容体を得るものである。
The first step in the method for sterilizing a packaging container of the present invention having the above configuration is a packaging container that has an inner circumferential surface layer made of a plastic film layer and has oxygen gas barrier properties, that is, For example, if the oxygen gas permeability is 100cc/
Synthetic resin molded containers with oxygen gas barrier properties of 20 cc/m 2 24 hr or less, preferably 20 cc/m 2 24 hr or less, such as aluminum foil, aluminum vapor deposited film, polyamide film , vinylidene chloride film, vinylidene chloride coated film, polyvinyl alcohol Oxygen gas permeability of film or laminated sheets containing these is 100cc/ m2 .
An inert gas is sealed inside the container such as a packaging bag made of a packaging material having an oxygen gas barrier property of 24 hr or less, preferably 20 cc/m 2.24 hr or less. The gas is replaced with an inert gas and the container is sealed, or an oxygen scavenger having the ability to sufficiently absorb the oxygen gas inside the container, such as hydrosulfite, is used as a main ingredient inside the packaging container similar to the above. A combination of calcium hydroxide, activated carbon, water, etc., sulfite and activated carbon, iron carbide and alkali sulfide, activated carbon and alkali sulfide, etc. are sealed and sealed, and the oxygen gas inside the container is deoxidized. Alternatively, an inert gas is sealed inside the same packaging container as above, and an oxygen scavenger is sealed inside the container, which is economical and convenient. A packaging container in which almost no oxygen gas is present is obtained.

なお、前記工程において、包装容体の容体内部
の不活性ガスを封入する工程は、通常のガス充填
機を使用して容易に行なえるが、不活性ガスとし
て特に窒素ガスを利用することが経済性、取扱い
作業性等の点から好ましい。
In the above process, the step of filling the inside of the package with inert gas can be easily carried out using a normal gas filling machine, but it is economical to use nitrogen gas as the inert gas. , is preferable from the viewpoint of handling workability.

〔実施例〕〔Example〕

以下、本発明の包装容体の滅菌処理方法につい
てその具体的な構成を実施例に基づいて説明説明
する。
Hereinafter, the specific structure of the packaging container sterilization method of the present invention will be explained based on Examples.

実施例 厚さ80μの塩化ビニリデン共押し出し多層フイ
ルム〔サラネツクス(登録商標名):旭ダウ(株)製〕

と厚さ50μの低密度ポリエチレンフイルムとを、
厚さ60μのエチレン−酢酸ビニル共重合体(酢酸
ビニル成分10%)を間に挾んで積層した酸素ガス
透過率20cc/m2・24hr・atmの積層シートを、該
シートにおける低密度ポリエチレンフイルム層面
が袋の内周面層となるようにして製袋し、得られ
た長さ45cm、幅30cm、内容物充填容積10lの口付
密封袋を、包装容体として使用する。
Example: Vinylidene chloride coextruded multilayer film with a thickness of 80μ [Saranex (registered trademark name): manufactured by Asahi Dow Co., Ltd.]

and a 50μ thick low-density polyethylene film,
A laminated sheet with an oxygen gas permeability of 20 cc/m 2 / 24 hr / atm, which is made by laminating a 60 μ thick ethylene-vinyl acetate copolymer (vinyl acetate component 10%) in between, is placed on the low-density polyethylene film layer side of the sheet. The bag is made in such a manner that the inner circumferential surface layer of the bag is formed, and the resulting sealed bag with a mouth having a length of 45 cm, a width of 30 cm, and a filling volume of 10 liters is used as a packaging container.

前記口付密封袋に、脱酸素剤〔エージレスZ
(登録商標名):三菱瓦期化学(株)製〕の10gの小袋
を封入、密封し、3日間放置後、大気中にて、こ
の口付密封袋にCo60を線源とする放射線2.5Mrad
を照射し滅菌処理を行なつた。
In the sealed bag with opening, oxygen absorber [Ageless Z
(Registered Trademark Name): Made by Mitsubishi Kawara Kagaku Co., Ltd.] A 10g pouch is sealed and sealed, and after being left for 3 days, this sealed bag with a mouth is exposed to 2.5 doses of radiation from Co 60 as a source. Mrad
was irradiated and sterilized.

前記放射線照射処理後、前記口付密封袋内の脱
酸素剤の小袋を該密封袋の底部端部に移し、該端
部をヒートシールすることにより、脱酸素剤の小
袋が、密封袋内に内填される内填物と接触しない
ようにし、しかる後に、無菌充填機にて食用クリ
ームを充填し、1週間放置後に密封袋内の食用ク
リームの官能試験を行なつたところ、密封袋の内
面からの食用クリームへの臭気の移行は全くな
く、また、食用クリームの腐敗もなく、良好なる
結果が得られた。
After the radiation irradiation treatment, the oxygen absorber pouch in the sealed bag with a mouth is transferred to the bottom end of the sealed bag, and the end is heat-sealed, so that the oxygen absorber pouch is placed inside the sealed bag. After making sure not to come into contact with the filling material, the edible cream was filled with an aseptic filling machine, and after being left for one week, a sensory test was conducted on the edible cream inside the sealed bag. Good results were obtained, with no odor transfer from the cream to the edible cream, and no spoilage of the edible cream.

なお、前記実施例で包装容体として使用した口
付密封袋と同一構造の口付密封袋内に、ガス充填
機を使用して窒素ガスを充填、密封し、しかる後
に、大気中にて前記密封袋にCo60を線源とする放
射線2.5Mradを照射して滅菌処理した結果、前記
実施例の場合と全く同様に、包装容体内部に異臭
の発生を伴うことなく無菌の口付密封袋を得るこ
とが出来た。
A sealed bag with a cap having the same structure as the sealed bag used as the packaging material in the above example is filled with nitrogen gas using a gas filling machine and sealed, and then the sealed bag is sealed in the atmosphere. As a result of sterilizing the bag by irradiating it with 2.5 Mrad of radiation from Co 60 as a radiation source, a sterile sealed bag with a spout is obtained without producing any strange odor inside the package, just as in the case of the above example. I was able to do it.

〔発明の作用、効果〕[Action and effect of the invention]

本発明の包装容体の滅菌処理方法は、内周面層
がプラスチツクフイルム層で形成されており、し
かも、酸素ガスバリヤー性を具備する包装容体の
内部に、不活性ガスを充填、密封するか、また
は、前記包装容体の内部に、脱酸素剤を封入、密
封するか、あるいは、これらの両手段を併用する
ことによつて、包装容体内部に酸素ガスが殆ど存
在しない状態の密封包装容体を得る前段工程と、
前記得られた密封包装体に、大気中にて、Co60
線源とする放射線を照射する後段工程とからなる
ものである。
The method for sterilizing a packaging container of the present invention includes filling and sealing an inert gas inside a packaging container whose inner peripheral surface layer is formed of a plastic film layer and which also has oxygen gas barrier properties; Alternatively, by enclosing and sealing an oxygen absorber inside the packaging container, or by using both of these methods in combination, a sealed packaging container in which almost no oxygen gas is present inside the packaging container can be obtained. The front stage process and
It consists of a subsequent step of irradiating the obtained sealed package with radiation using Co 60 as a radiation source in the atmosphere.

しかして、前記構成からなる本発明方法におい
ては、容体の内部に酸素ガスが殆ど存在していな
い状態とされている容体に、Co60を線源とする放
射線を照射するものであるから、包装容体の容体
内部の酸素ガスの存在に伴う反応、すなわち、酸
素ガスが放射線の照射でオゾンとなり、更に、こ
れが窒素と反応して窒化酸化物を生成する等の現
象が回避されるものである。
However, in the method of the present invention having the above-mentioned configuration, since radiation from a Co 60 source is irradiated to a container in which almost no oxygen gas exists inside the container, the packaging This avoids reactions associated with the presence of oxygen gas inside the container, such as oxygen gas turning into ozone when irradiated with radiation, which then reacts with nitrogen to produce nitrided oxides.

従つて、従来の放射線の照射処理による包装容
体の滅菌処理の際における弊害、すなわち、放射
線が照射される雰囲気中の酸素ガスの存在が原因
する前述の諸現象によつて生ずるところの包装容
体内部でのポリエチレン臭の発生、窒素酸化物に
よる異臭の発生等を伴うことなく、内周面層がプ
ラスチツクフイルム層で構成されている包装容体
に効果的な滅菌処理が行なえるものである。
Therefore, there are disadvantages in sterilizing packaging containers by conventional radiation irradiation treatment, namely, damage to the inside of the packaging container caused by the above-mentioned phenomena caused by the presence of oxygen gas in the atmosphere to which radiation is irradiated. It is possible to effectively sterilize a package whose inner surface layer is made of a plastic film layer, without causing the generation of polyethylene odor or the generation of foreign odor due to nitrogen oxides.

Claims (1)

【特許請求の範囲】 1 内周面層がプラスチツクフイルム層で形成さ
れており、しかも、酸素ガスバリヤー性を具備す
る包装容体の内部に、不活性ガスを充填、密封す
るか、または、前記包装容体の内部に、脱酸素剤
を封入、密封するか、あるいは、これらの両手段
を併用することによつて、包装容体内部を酸素ガ
スが殆ど存在しない状態にした後、大気中にて、
前記密封状態とされている包装容体に、Co60を線
源とする放射線を照射することを特徴とする包装
容体の滅菌処理方法。
[Scope of Claims] 1. An inert gas is filled and sealed inside a packaging container whose inner peripheral surface layer is formed of a plastic film layer and which has oxygen gas barrier properties, or After making the inside of the packaging container almost completely free of oxygen gas by enclosing and sealing an oxygen scavenger inside the container, or by using both of these methods in combination,
A method for sterilizing a packaging container, comprising irradiating the sealed packaging container with radiation using Co 60 as a radiation source.
JP14511080A 1980-10-17 1980-10-17 Method of sterilizing and treating packing solution Granted JPS5777420A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14511080A JPS5777420A (en) 1980-10-17 1980-10-17 Method of sterilizing and treating packing solution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14511080A JPS5777420A (en) 1980-10-17 1980-10-17 Method of sterilizing and treating packing solution

Publications (2)

Publication Number Publication Date
JPS5777420A JPS5777420A (en) 1982-05-14
JPS6326011B2 true JPS6326011B2 (en) 1988-05-27

Family

ID=15377607

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14511080A Granted JPS5777420A (en) 1980-10-17 1980-10-17 Method of sterilizing and treating packing solution

Country Status (1)

Country Link
JP (1) JPS5777420A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61175A (en) * 1984-06-06 1986-01-06 大倉工業株式会社 Blister packaging for medical instruments sterilized by radiation irradiation
US20100293892A1 (en) * 2008-12-12 2010-11-25 Edwards Lifesciences Corporation Method of Packaging and Package for Sensors

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55145109A (en) * 1979-05-01 1980-11-12 Kawasaki Steel Corp Method and apparatus for collecting dust on casting floor of blast furnace

Also Published As

Publication number Publication date
JPS5777420A (en) 1982-05-14

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