JP5122357B2 - Oxygen detector package - Google Patents

Oxygen detector package Download PDF

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JP5122357B2
JP5122357B2 JP2008115280A JP2008115280A JP5122357B2 JP 5122357 B2 JP5122357 B2 JP 5122357B2 JP 2008115280 A JP2008115280 A JP 2008115280A JP 2008115280 A JP2008115280 A JP 2008115280A JP 5122357 B2 JP5122357 B2 JP 5122357B2
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oxygen
packaging material
detection agent
inner packaging
detector
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JP2009264946A (en
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雅夫 高田
洋 有辺
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Ueno Fine Chemicals Industry Ltd
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本発明は、主に食品分野において密封包装内または密封容器内の脱酸素状態を確認するために用いられる、酸素検知剤を封入してなる酸素検知剤包装体に関する。   The present invention relates to an oxygen detection agent package in which an oxygen detection agent is used, which is mainly used in the field of food to confirm the deoxygenation state in a sealed package or a sealed container.

食品分野では、食品の酸化等による劣化を防止する手段として脱酸素剤を利用した保存技術が普及しており、それに伴って包装系内の脱酸素状態を確認する目的で酸素検知剤も利用されている。酸素検知剤としては、種々のものが知られているが、メチレンブルー等の酸化還元色素をシリカ等の基材に担持させたものが広く使用されている。   In the food field, preservative technology using oxygen scavengers has become widespread as a means to prevent food deterioration due to oxidation, etc., and oxygen detectors are also used for the purpose of confirming the oxygen scavenging status in packaging systems. ing. Various oxygen detectors are known, and those in which a redox dye such as methylene blue is supported on a substrate such as silica are widely used.

メチレンブルーを利用した酸素検知剤は、メチレンブルーが酸素の存在下で青色に変化することを利用したものであるが、メチレンブルーは無酸素状態では無色（白色）であるため、視認性向上のために赤色色素を混在させたものが普及している。このような酸素検知剤は、無酸素状態では赤色、有酸素状態では青色を示すことになり、酸素の有無を容易に確認できるようになっている。   The oxygen detector using methylene blue uses the fact that methylene blue turns blue in the presence of oxygen. However, since methylene blue is colorless (white) in the absence of oxygen, it is red for improved visibility. A mixture of pigments is widespread. Such an oxygen detection agent shows red in an oxygen-free state and blue in an aerobic state, and can easily check the presence or absence of oxygen.

酸素検知剤は、通常、例えば特許文献１に記載されるように、フィルム袋に封入された酸素検知剤包装体の形態とし、脱酸素剤の表面に貼付した形で利用されている。   As described in Patent Document 1, for example, the oxygen detection agent is usually used in the form of an oxygen detection agent package enclosed in a film bag and attached to the surface of the deoxidation agent.

酸素検知剤包装体は一般に、流通に際しては、脱酸素剤と共にガスバリア性袋に入れて脱気することにより、圧縮された真空状態で保管されているが、このような圧縮された状態で保管されている酸素検知剤包装体においては、保管期間が長期間に亘ると、シリカ等の基材に担持されたメチレンブルーや赤色色素が包装袋に転写し、包装袋が青色または赤色に着色することがあった。例えば、包装材が青色に着色されると、無酸素状態で本来赤色に視認されるべきところ、外観的に青色と視認されることから、酸素検知剤の役目を果たさなくなるという問題が発生していた。   In general, oxygen detector packs are stored in a compressed vacuum state by degassing them in a gas barrier bag together with an oxygen scavenger during distribution, but they are stored in such a compressed state. In the oxygen detector package, the methylene blue or red pigment supported on a substrate such as silica is transferred to the packaging bag and the packaging bag is colored blue or red when the storage period is long. there were. For example, if the packaging material is colored blue, it should be visually recognized as red in an oxygen-free state, but since it is visually recognized as blue in appearance, there is a problem that it does not serve as an oxygen detector. It was.

一方、従来の酸素検知剤包装体が抱える別の問題として、高湿度下における利用が挙げられる。多くの酸素検知剤包装体は、酸素との反応速度を向上させるために、通常、包装袋に貫通孔を設けているが、貫通孔を有する包装体を高湿度下で使用すると、酸素検知剤が水分を吸収することによってメチレンブルーや着色用色素が染み出して保存食品に付着し、商品価値を損なうという問題があった。   On the other hand, utilization under high humidity is mentioned as another problem which the conventional oxygen detection agent package has. Many oxygen detection agent packaging bodies are usually provided with through holes in the packaging bag in order to improve the reaction rate with oxygen. However, when a packaging body having through holes is used under high humidity, the oxygen detection agent As a result of absorption of moisture, methylene blue and coloring pigments ooze out and adhere to stored foods, which impairs commercial value.

このように、従来の酸素検知剤は高湿度下では使用が困難であり、特に水分活性が０．９を超えるような高水分食品等では、酸素検知剤を用いて脱酸素状態を確認することができなかった。   In this way, conventional oxygen detectors are difficult to use under high humidity, especially in high moisture foods where the water activity exceeds 0.9, use oxygen detectors to check the deoxygenated state. I could not.

また、高水分食品等に用いられる脱酸素剤には、酸素の吸収に伴い、炭酸ガスを発生するタイプのものがあり、このような脱酸素剤と共に従来の酸素検知剤包装体を用いると、炭酸ガスの影響によりメチレンブルーの変色が不安定になる傾向があった。   In addition, oxygen scavengers used for high moisture foods and the like include a type that generates carbon dioxide gas along with absorption of oxygen, and when using a conventional oxygen detector packaging with such a scavenger, The discoloration of methylene blue tended to become unstable due to the influence of carbon dioxide.

従って、長期保管時にも色素の転写が無く、高湿度下においても使用可能な酸素検知剤包装体が望まれていた。
特許第３３９２２７０号公報 Accordingly, there has been a demand for an oxygen detection agent package that can be used even under high humidity without transferring dye during long-term storage.
Japanese Patent No. 3392270

本発明は、酸素検知剤に含まれる色素が包装材に転写することにより発生する視認不良を防止すると共に、高水分食品等（高湿度下）においても使用可能な酸素検知剤を提供することを目的とする。   The present invention provides an oxygen detection agent that can be used even in high-moisture foods and the like (under high humidity) while preventing poor visibility caused by transfer of a dye contained in the oxygen detection agent to a packaging material. Objective.

本発明者等は、酸素検知剤包装体について鋭意研究した結果、特定の材料からなる外包材と内包材を用いて、外包材と内包材の間に空隙を有し、内包材の内面同士が対向するように周縁部を接着して包装袋を構成し、この包装袋に酸素検知剤を封入することにより、保管中に酸素検知剤に含まれる色素が包装材に転写することによる視認不良が発生せず、また高湿度下であっても色素が流出することなく脱酸素状態が容易に確認できることを見出し、本発明を完成させるに至った。   As a result of earnest research on the oxygen detector package, the present inventors have used an outer packaging material and an inner packaging material made of a specific material, have a gap between the outer packaging material and the inner packaging material, and the inner surfaces of the inner packaging material are By forming the packaging bag by adhering the peripheral edge so as to face each other, and encapsulating the oxygen detection agent in this packaging bag, poor visibility due to transfer of the dye contained in the oxygen detection agent to the packaging material during storage It has been found that the deoxygenated state can be easily confirmed without being generated and without the dye flowing out even under high humidity, and the present invention has been completed.

すなわち本発明は、酸素透過性を有する無孔プラスチックフィルムからなる外包材と、貫通孔を有するプラスチックフィルムからなる内包材とを、外包材と内包材の間に空隙を有するように重ね合わせ、内包材の内面同士が対向するように外包材と内包材の周縁部を接着して構成された包装袋の中に、酸素検知剤を封入してなる酸素検知剤包装体を提供する。   That is, the present invention provides a method for superposing an outer packaging material made of a non-porous plastic film having oxygen permeability and an inner packaging material made of a plastic film having a through-hole so as to have a gap between the outer packaging material and the inner packaging material. Provided is an oxygen detection agent package in which an oxygen detection agent is enclosed in a packaging bag formed by bonding the outer packaging material and the peripheral edge of the inner packaging material so that the inner surfaces of the materials face each other.

以下に本発明の実施形態について詳細に説明する。
図１に示すように、本発明の酸素検知剤包装体は外包材１と内包材２との二重構造で構成される。内包材２は内面同士が対向するように周縁部３で外包材１と共に接着され、外包材１と内包材２の間には空隙４が設けられている。内包材２の内部には、酸化還元色素を担体に担持させた酸素検知剤５が充填されている。 Hereinafter, embodiments of the present invention will be described in detail.
As shown in FIG. 1, the oxygen detection agent package of the present invention has a double structure of an outer packaging material 1 and an inner packaging material 2. The inner packaging material 2 is bonded together with the outer packaging material 1 at the peripheral edge 3 so that the inner surfaces face each other, and a gap 4 is provided between the outer packaging material 1 and the inner packaging material 2. The inner packaging material 2 is filled with an oxygen detecting agent 5 in which a redox dye is supported on a carrier.

外包材１は酸素透過性を有する無孔プラスチックフィルムからなる。外包材としては、酸素透過率が１００ｍｌ／ｍ２・２４ｈｒ以上であり、且つ水蒸気透過率が５０ｇ／ｍ２・２４ｈｒ・４０℃・９０％ＲＨ以下であるフィルムが好ましく、酸素透過率が１０００〜３０００ｍｌ／ｍ２・２４ｈｒであり、且つ水蒸気透過率が１〜１０ｇ／ｍ２・２４ｈｒ・４０℃・９０％ＲＨであるフィルムがより好ましい。 The outer packaging material 1 is made of a non-porous plastic film having oxygen permeability. As the outer packaging material, a film having an oxygen permeability of 100 ml / m 2 · 24 hr or more and a water vapor permeability of 50 g / m 2 · 24 hr · 40 ° C. or 90% RH or less is preferable, and the oxygen permeability is 1000 to 1000 A film having 3000 ml / m 2 · 24 hr and a water vapor transmission rate of 1 to 10 g / m 2 · 24 hr · 40 ° C · 90% RH is more preferable.

酸素透過率が１００ｍｌ／ｍ２・２４ｈｒ未満の場合、酸素検知速度が低下する傾向があり、水蒸気透過率が５０ｇ／ｍ２・２４ｈｒ・４０℃・９０％ＲＨを超える場合、酸素検知剤が過剰に水分を含むことにより視認性が悪化する傾向がある。 If the oxygen transmission rate is less than 100 ml / m 2 · 24 hr, the oxygen detection rate tends to decrease, and if the water vapor transmission rate exceeds 50 g / m 2 · 24 hr · 40 ° C · 90% RH, the oxygen detection agent is excessive. Visibility tends to deteriorate due to the water content.

このような酸素透過性を有する無孔プラスチックフィルムとしては、二軸延伸ポリプロピレン（ＯＰＰ）、ポリエチレンテレフタレート（ＰＥＴ）等が例示される。また、二軸延伸ポリプロピレンとポリエチレン（ＰＥ）の積層フィルム等の積層フィルムを採用してもよいが、その場合、積層フィルムとして上記酸素透過率および水蒸気透過率の条件を満たすことが好ましい。   Examples of such a non-porous plastic film having oxygen permeability include biaxially oriented polypropylene (OPP) and polyethylene terephthalate (PET). In addition, a laminated film such as a laminated film of biaxially stretched polypropylene and polyethylene (PE) may be employed. In that case, it is preferable that the laminated film satisfy the above conditions of oxygen permeability and water vapor permeability.

外包材１としては強度、防水性および酸素透過性に優れ、且つコストバランスの点で有利な二軸延伸ポリプロピレンの単層フィルムが特に好ましく使用される。   As the outer packaging material 1, a single-layer film of biaxially oriented polypropylene which is excellent in strength, waterproofness and oxygen permeability and advantageous in terms of cost balance is particularly preferably used.

尚、本発明において、酸素透過率は、ＪＩＳ Ｚ １７０７に規定される方法により測定され、水蒸気透過率は、ＪＩＳ Ｚ ０２０８ 条件Ｂに規定される方法により測定される。   In the present invention, the oxygen transmission rate is measured by a method specified in JIS Z 1707, and the water vapor transmission rate is measured by a method specified in JIS Z 0208 Condition B.

外包材１に使用する無孔プラスチックフィルムの厚みは、５〜５０μｍであるのが好ましく、８〜３０μｍであるのがより好ましい。外包材１の厚みが５μｍ未満の場合、強度が不足し、ヒートシール時に破損しやすい傾向があり、５０μｍを超える場合には酸化反応が遅くなる傾向がある。   The thickness of the nonporous plastic film used for the outer packaging material 1 is preferably 5 to 50 μm, and more preferably 8 to 30 μm. When the thickness of the outer packaging material 1 is less than 5 μm, the strength is insufficient and tends to be damaged during heat sealing, and when it exceeds 50 μm, the oxidation reaction tends to be slow.

内包材２は貫通孔を有するプラスチックフィルムからなる。内包材２の貫通孔６の穿設方法としては、例えば加熱針、剣山状の金属ブラシ金型、レーザー光等を用いた方法が採用される。   The inner packaging material 2 is made of a plastic film having a through hole. As a method for drilling the through hole 6 of the inner packaging material 2, for example, a method using a heating needle, a sword mountain-shaped metal brush mold, laser light or the like is employed.

孔径は特に限定されず、又、穿設される貫通孔６の数は、孔径、酸素検知剤包装体のサイズ、酸素検知剤量などによって適宜定めればよいが、内包材のガーレ式透気度が０．１ｓ／１００ｍｌ以上、好ましくは１〜５０００ｓ／１００ｍｌ、より好ましくは５〜２０００ｓ／１００ｍｌとなるように、孔径及び孔数を設定するのが良い。内包材の透気度が０．１ｓ／１００ｍｌ未満の場合、酸素検知速度が低下する傾向がある。また、内包材の貫通孔の孔径が大きすぎると、フィルム強度が弱くなる。   The hole diameter is not particularly limited, and the number of through-holes 6 to be drilled may be determined as appropriate depending on the hole diameter, the size of the oxygen detection agent package, the amount of oxygen detection agent, and the like. The pore diameter and the number of holes may be set so that the degree is 0.1 s / 100 ml or more, preferably 1 to 5000 s / 100 ml, more preferably 5 to 2000 s / 100 ml. When the air permeability of the inner packaging material is less than 0.1 s / 100 ml, the oxygen detection speed tends to decrease. Moreover, when the hole diameter of the through-hole of an inner packaging material is too large, film strength will become weak.

貫通孔６の形状についても限定されるものではないが、包装袋の強度の点で円形または楕円形が好ましい。   The shape of the through hole 6 is not limited, but a circular or elliptical shape is preferable from the viewpoint of the strength of the packaging bag.

好ましい内包材２としては、無延伸ポリプロピレン（ＣＰＰ）、ポリエチレンテレフタレート（ＰＥＴ）、または、無延伸ポリプロピレンまたはポリエチレンテレフタレートとポリエチレンと（ＰＥ）の積層体のいずれかに、貫通孔６を穿設したフィルムが例示され、強度やヒートシール性に優れ、コストバランスの点においても有利であることから、無延伸ポリプロピレンの単層フィルムに貫通孔を穿設したフィルムまたはポリエチレンテレフタレートとポリエチレンの積層体に貫通孔を穿設したフィルムがより好ましく使用される。   As a preferable inner packaging material 2, a film in which through-holes 6 are formed in any of unstretched polypropylene (CPP), polyethylene terephthalate (PET), or a laminate of unstretched polypropylene or polyethylene terephthalate and polyethylene and (PE). And is excellent in strength and heat-sealability, and is advantageous in terms of cost balance. Therefore, a film in which a through-hole is formed in a single layer film of unstretched polypropylene or a through-hole in a laminate of polyethylene terephthalate and polyethylene A film having a perforated hole is more preferably used.

前記積層体を採用した場合には、酸素検知剤５と接する面がポリエチレンテレフタレートまたは無延伸ポリプロピレンとなるように使用される。ポリエチレンテレフタレートまたは無延伸ポリプロピレンといった材料を酸素検知剤５と接する面に用いることにより、圧縮状態で長期間保管されても色素の転写が防止され、酸素の有無を確実に視認することが可能となる。   When the laminate is employed, the surface in contact with the oxygen detector 5 is used so as to be polyethylene terephthalate or unstretched polypropylene. By using a material such as polyethylene terephthalate or unstretched polypropylene on the surface in contact with the oxygen detector 5, dye transfer is prevented even when stored in a compressed state for a long period of time, and the presence or absence of oxygen can be reliably observed. .

内包材２に使用する貫通孔を有するプラスチックフィルムの厚みは、１５〜５０μｍであるのが好ましく、２０〜３０μｍであるのがより好ましい。内包材２の厚みが１５μｍ未満の場合には、強度不足となる傾向があり、５０μｍを超える場合には通気安定性が悪化する傾向がある。   The thickness of the plastic film having a through-hole used for the inner packaging material 2 is preferably 15 to 50 μm, and more preferably 20 to 30 μm. When the thickness of the inner packaging material 2 is less than 15 μm, the strength tends to be insufficient, and when it exceeds 50 μm, the ventilation stability tends to deteriorate.

本発明の酸素検知剤包装体においては、図１に示すように外包材１と内包材２とが完全に密着（一体化）されず、接着部７によって部分的に接着した形態、または図４に示すように接着せずに重ね合わせた形態となっており、いずれも外包材１と内包材２の間に空隙４を有している。外包材１と内包材２の間に空隙４を設けることによって、外包材１を通過した酸素が阻害されることなく、内包材２の貫通孔を通過し、内部の酸素検知剤と反応するため、速やかに脱酸素状態を確認することができる。   In the oxygen detection agent packaging body of the present invention, as shown in FIG. 1, the outer packaging material 1 and the inner packaging material 2 are not completely adhered (integrated), and are partially bonded by the bonding portion 7, or FIG. As shown in FIG. 2, the two layers are overlapped without being bonded, and each has a gap 4 between the outer packaging material 1 and the inner packaging material 2. By providing the gap 4 between the outer packaging material 1 and the inner packaging material 2, oxygen that has passed through the outer packaging material 1 passes through the through hole of the inner packaging material 2 and is reacted with the oxygen detector inside. The deoxygenated state can be confirmed promptly.

なお、本発明において空隙とは外包材１と内包材２との間に空気が滞留しうる空間が存在することを意味し、外包材１と内包材２とが部分的に接着されたものであっても、空気が滞留しうるものは本発明の範囲に属する。   In the present invention, the void means that there is a space in which air can stay between the outer packaging material 1 and the inner packaging material 2, and the outer packaging material 1 and the inner packaging material 2 are partially bonded to each other. Even if it exists, what can retain air belongs to the scope of the present invention.

部分的に接着する形態をとる場合、接着部分は図１に示す格子状の他、ストライプ状、ドット状であってもよい。またこの場合、接着部７の総面積は、フィルム全体の面積に対し５〜７５％とするのが好ましい。   When taking the form which adhere | attaches partially, an adhesion | attachment part may be stripe form and a dot form other than the grid | lattice form shown in FIG. In this case, the total area of the bonding portion 7 is preferably 5 to 75% with respect to the area of the entire film.

上述のような外包材１と内包材２との二重構造とすることにより、高水分食品などにおいても良好な酸素検知速度を有すると共に、長期保管時にも色素の転写のない酸素検知剤包装体が提供される。   By having a double structure of the outer packaging material 1 and the inner packaging material 2 as described above, the oxygen detection agent package has a good oxygen detection speed even in high moisture foods and the like, and has no dye transfer even during long-term storage. Is provided.

本発明の酸素検知剤包装体において周縁部３および接着部７の接着方法としては、ヒートシール、接着剤等の方法が挙げられるが、外包材１に単層フィルムを使用した場合、接着剤による接着が好ましい。また、ヒートシールによる製袋方法には折り込み三方シールおよび四方シールがあり、本発明においてはいずれの製袋方法でもよいが、様々なサイズの袋を効率良く製造できる点やヒートシール時のトラブルが少ない点で折り込み三方シール包装体とするのが好ましい。   In the oxygen detection agent package of the present invention, examples of the bonding method of the peripheral portion 3 and the bonding portion 7 include methods such as heat sealing and an adhesive. When a single-layer film is used for the outer packaging material 1, an adhesive is used. Adhesion is preferred. In addition, there are folding three-side seals and four-side seals as bag making methods by heat sealing, and any bag making method may be used in the present invention, but there are problems in efficiently producing bags of various sizes and troubles during heat sealing. It is preferable to use a folded three-way sealed package in terms of few points.

本発明の酸素検知剤包装体において内部に封入する酸素検知剤に使用する酸化還元色素としては、メチレンブルー、ニューメチレンブルー、ラウスバイオレット、メチレングリーン等、従来から酸素検知剤に使用されているものを使用することができる。   As the redox dye used for the oxygen detector encapsulated in the oxygen detector package of the present invention, those conventionally used for oxygen detectors such as methylene blue, new methylene blue, rous violet, and methylene green are used. can do.

また、脱酸素状態を示すための着色用色素としては、赤色１０６号、赤色１０４号、赤色１０２号等の色素が例示される。   Examples of coloring pigments for indicating the deoxygenated state include pigments such as Red No. 106, Red No. 104, and Red No. 102.

また、上記酸化還元色素を担持させる担体も、色素を担持させることが可能であれば特に限定されず、シリカ、紙、糸、セルロースとシリカの混合物等、従来から酸素検知剤に使用されているものを採用することができる。   The carrier for supporting the oxidation-reduction dye is not particularly limited as long as it can support the dye, and is conventionally used as an oxygen detector, such as silica, paper, thread, a mixture of cellulose and silica. Things can be adopted.

酸素検知剤の剤型としては、特に限定されないが、粉末、錠剤、酸素検知剤を濾紙等に含浸させたシート等が使用できる。この中でも酸素との反応速度が速い点で粉末状の酸素検知剤が好ましく採用される。   The dosage form of the oxygen detector is not particularly limited, and powders, tablets, a sheet obtained by impregnating an oxygen detector with filter paper or the like can be used. Among these, a powdery oxygen detector is preferably employed because of its high reaction rate with oxygen.

以下、実施例により本発明を更に説明する。   The following examples further illustrate the present invention.

実施例１および比較例１
酸素検知剤包装体の保管試験
試験方法：自力反応型脱酸素剤（４．５ｃｍ×４．０ｃｍ）の中央部に表１に示す酸素検知剤包装体（３．０ｃｍ×２．０ｃｍ）をホットメルト接着剤にて貼付した酸素検知剤付脱酸素剤２００個を酸素バリヤ性の包装袋に入れ、脱気した後、ヒートシーラーにて密封し、室温で１ヶ月間保管した。次に、包装袋を開封し、酸素検知剤と空気を十分に反応させた後、色素が内包材に転写し、視認不良が発生している個体数をカウントした。 Example 1 and Comparative Example 1
Storage test of oxygen detection agent package Test method: Oxygen detection agent package (3.0 cm × 2.cm) shown in Table 1 at the center of a self-reactive oxygen absorber (4.5 cm × 4.0 cm). Oxygen detector-attached oxygen scavenger attached with a hot melt adhesive was placed in an oxygen barrier packaging bag, degassed, sealed with a heat sealer, and stored at room temperature for 1 month. Next, after opening the packaging bag and allowing the oxygen detector and air to sufficiently react, the dye was transferred to the inner packaging material, and the number of individuals with poor visual recognition was counted.

Figure 0005122357
Figure 0005122357

結果：本発明の酸素検知剤包装体では、色素の転写による視認不良が発生した個体は確認されなかったが、比較例の酸素検知剤包装体では、２００個中１９６個に視認不良が発生した個体が確認された。 Result: In the oxygen detection agent packaging body of the present invention, no individual was found to have a poor visibility due to the transfer of the dye, but in the oxygen detection agent packaging body of the comparative example, 196 out of 200 poor visibility occurred. The individual was confirmed.

実施例２および比較例２
酸素検知剤包装体の耐水試験
試験方法：水１０ｍｌを染み込ませた脱脂綿をバランスディッシュに入れ、その上に表１に示す酸素検知剤包装体（３．０ｃｍ×２．０ｃｍ）を置き、自力反応型脱酸素剤と共に酸素バリア性の包装袋に入れ、４０℃の恒温器内で５週間保存し、高湿度下での変化を確認した。また、５週間経過後に包装袋を開封し、酸素検知機能を確認した。 Example 2 and Comparative Example 2
Water resistance test of oxygen detector package : Test method: Put absorbent cotton soaked with 10 ml of water into a balance dish, and put the oxygen detector package (3.0 cm × 2.0 cm) shown in Table 1 on it. It was placed in an oxygen barrier packaging bag together with a self-reactive oxygen scavenger and stored in a 40 ° C. incubator for 5 weeks to confirm changes under high humidity. Moreover, the packaging bag was opened after 5 weeks, and the oxygen detection function was confirmed.

結果：本発明の酸素検知剤包装体では５週間経過後も染み出し等の発生は確認されず、大気中では速やかに青色に変色し、酸素検知機能が維持されていた。これに対し比較例の酸素検知剤包装体では１週間経過後に色素が染み出し、脱脂綿が変色していた。また、未開封の状態で青色に変化し、開封後も変化が無く、酸素検知機能が失われていた。結果を表２に示す。 Result: In the oxygen detection agent package of the present invention, no exudation or the like was confirmed even after 5 weeks, and it quickly turned blue in the atmosphere, maintaining the oxygen detection function. On the other hand, in the oxygen detection agent package of the comparative example, the dye oozed out after one week and the absorbent cotton was discolored. Moreover, it changed to blue in the unopened state, there was no change after opening, and the oxygen detection function was lost. The results are shown in Table 2.

Figure 0005122357
Figure 0005122357

本発明の酸素検知剤包装体の実施形態を示す断面図である。It is sectional drawing which shows embodiment of the oxygen detection agent packaging body of this invention. 本発明の酸素検知剤包装体に使用する包装フィルムの一例（外包材側）を示す斜視図である。It is a perspective view which shows an example (outer packaging material side) of the packaging film used for the oxygen detection agent packaging body of this invention. 本発明の酸素検知剤包装体に使用する包装フィルムの一例（内包材側）を示す斜視図である。It is a perspective view which shows an example (inner packaging material side) of the packaging film used for the oxygen detection agent packaging body of this invention. 本発明の酸素検知剤包装体の他の実施形態を示す断面図である。It is sectional drawing which shows other embodiment of the oxygen detection agent packaging body of this invention.

符号の説明Explanation of symbols

１ 外包材
２ 内包材
３ 周縁部
４ 空隙
５ 酸素検知剤
６ 貫通孔
７ 接着部 DESCRIPTION OF SYMBOLS 1 Outer packaging material 2 Inner packaging material 3 Peripheral part 4 Space | gap 5 Oxygen detection agent 6 Through-hole 7 Bonding part

Claims (6)

酸素透過率が１００ｍｌ／ｍ ２ ・２４ｈｒ以上の無孔プラスチックフィルムからなる外包材と、貫通孔を有するプラスチックフィルムからなる内包材とを、外包材と内包材の間に空隙を有するように重ね合わせ、内包材の内面同士が対向するように外包材と内包材の周縁部を接着して構成された包装袋の中に、酸素検知剤を封入してなる酸素検知剤包装体。 An outer packaging material made of a non-porous plastic film having an oxygen permeability of 100 ml / m 2 · 24 hr or more and an inner packaging material made of a plastic film having a through hole are overlapped so as to have a gap between the outer packaging material and the inner packaging material. An oxygen detection agent packaging body in which an oxygen detection agent is enclosed in a packaging bag formed by adhering the peripheral portions of the outer packaging material and the inner packaging material so that the inner surfaces of the inner packaging material face each other. 外包材の水蒸気透過率が５０ｇ／ｍ２・２４ｈｒ・４０℃・９０％ＲＨ以下である請求項１記載の酸素検知剤包装体。 Oxygen detecting agent package of claim 1, wherein the water vapor transmission rate of the outer cover material is not more than 50g / m 2 · 24hr · 40 ℃ · 90% RH. 外包材が、二軸延伸ポリプロピレンまたはポリエチレンテレフタレートのいずれかである請求項１または２記載の酸素検知剤包装体。   The oxygen detector packaging body according to claim 1 or 2, wherein the outer packaging material is either biaxially oriented polypropylene or polyethylene terephthalate. 内包材のガーレ式透気度が０．１ｓ／１００ｍｌ以上である請求項１から３いずれかに記載の酸素検知剤包装体。   The oxygen detector packaging body according to any one of claims 1 to 3, wherein the inner packaging material has a Gurley air permeability of 0.1 s / 100 ml or more. 内包材が、無延伸ポリプロピレン、ポリエチレンテレフタレート、または、無延伸ポリプロピレンまたはポリエチレンテレフタレートとポリエチレンとの積層体のいずれかに、貫通孔を穿設したフィルムである請求項１から４いずれかに記載の酸素検知剤包装体。   5. The oxygen according to claim 1, wherein the inner packaging material is a film in which a through hole is formed in any of unstretched polypropylene, polyethylene terephthalate, or unstretched polypropylene or a laminate of polyethylene terephthalate and polyethylene. Detection agent package. 酸素検知剤の剤型が、粉末、錠剤またはシートのいずれかである請求項１〜５いずれかに記載の酸素検知剤包装体。   The oxygen detector agent package according to any one of claims 1 to 5, wherein a dosage form of the oxygen detector is powder, tablet or sheet.
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