JPS645232Y2 - - Google Patents
Info
- Publication number
- JPS645232Y2 JPS645232Y2 JP1981122514U JP12251481U JPS645232Y2 JP S645232 Y2 JPS645232 Y2 JP S645232Y2 JP 1981122514 U JP1981122514 U JP 1981122514U JP 12251481 U JP12251481 U JP 12251481U JP S645232 Y2 JPS645232 Y2 JP S645232Y2
- Authority
- JP
- Japan
- Prior art keywords
- color
- layer
- oxygen gas
- transparent
- paper
- 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
Links
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Description
【考案の詳細な説明】
この考案は、酸素ガスの存在を嫌う物品の密封
包装体内に同封して、同封した脱酸素剤の機能低
下あるいは外部からの酸素ガスの透入等により、
包装体内の酸素ガス濃度の増大を警告するために
用いる酸素濃度表示シートに関する。従来、食
品、薬品等の保存期間を延長するために、酸化防
止剤の添加、真空包装、不活性ガス充填包装、脱
酸素剤同封包装などの方法が行われている。[Detailed description of the invention] This invention is designed to prevent the presence of oxygen gas by enclosing it in a sealed package of an article that does not like the presence of oxygen gas, thereby reducing the function of the enclosed oxygen absorber or infiltrating oxygen gas from the outside.
The present invention relates to an oxygen concentration display sheet used to warn of an increase in oxygen gas concentration within a package. Conventionally, in order to extend the shelf life of foods, medicines, etc., methods such as adding antioxidants, vacuum packaging, packaging filled with inert gas, and packaging with oxygen absorbers included have been used.
これらは、何れも包装体内の内容物に対する酸
化変敗を防止するものであり、特に包装体内の酸
素ガス量を極力低下維持することが望ましく、こ
のために不測の原因による包装体内の酸素ガス量
の増加を検知する必要性が生じ、低酸素ガス濃度
域で可逆的変色反応を起す酸素濃度表示体を包装
体内に同封する方法が行われるようになり、この
酸素濃度表示体として、酸素ガス透過性基体シー
トとして紙を用い、その変色インキ印刷層、透明
オーバーコート層、感圧接着剤層、離型紙を順次
積層してなるシート状表示体が提案されている。
（例えば特開昭55−30605号公報参照）
しかし、上記のごとき酸素ガス透過性基体シー
トとして紙、不織布を用い、その片面に直接変色
インキ印刷層を形成してなるシート状表示体にお
いては、比較的多量の変色インキを用いても均一
印刷層厚を得ることが難しく、しかも、酸素ガス
の有無による酸化還元反応速度を充分に向上する
ことが困難であるなどの問題点があつた。 All of these prevent oxidative deterioration of the contents inside the package, and it is particularly desirable to keep the amount of oxygen gas inside the package as low as possible. The need to detect an increase in oxygen concentration has arisen, and a method of enclosing an oxygen concentration indicator that causes a reversible color change reaction in the low oxygen gas concentration region in the package has been used. A sheet-like display has been proposed in which a color-changing ink printing layer, a transparent overcoat layer, a pressure-sensitive adhesive layer, and a release paper are sequentially laminated using paper as a transparent substrate sheet.
(For example, see Japanese Patent Application Laid-open No. 55-30605.) However, in the sheet-like display body as described above, in which paper or nonwoven fabric is used as the oxygen gas permeable base sheet, and a color-changing ink printing layer is directly formed on one side of the base sheet, There are problems in that it is difficult to obtain a uniform printed layer thickness even when a relatively large amount of color-changing ink is used, and it is also difficult to sufficiently improve the redox reaction rate depending on the presence or absence of oxygen gas.
本考案は上記のごときシート状表示体として、
紙または不織布を基材シートとし、その片面にア
ルカリ性充填材を配合してなる目止め層、低酸素
ガス濃度域で酸化還元して変色する変色インキ印
刷層、透明オーバーコート層、透明感圧接着剤
層、離型紙を順次積層してなる酸素濃度表示シー
トである。 The present invention can be used as a sheet-like display body as described above.
A sealing layer made of paper or non-woven fabric as a base sheet and an alkaline filler mixed on one side, a color-changing ink printing layer that changes color due to oxidation and reduction in a low oxygen gas concentration range, a transparent overcoat layer, and a transparent pressure-sensitive adhesive. This is an oxygen concentration display sheet made by sequentially laminating an agent layer and a release paper.
本考案は特に基材シートとしてガス透過性が大
である紙または不織布を用い、その片面にアルカ
リ性充填材を配合した目止め層を形成した後、変
色インキ印刷層を形成するものであるので、その
変色インキ印刷量を低減して均一塗膜を形成でき
るとともに基材シート、目止め層の充分な酸素ガ
ス透過性を維持しつつ変色インキ印刷層の酸化還
元反応を迅速均一に行い得るようになして、前記
従来の問題点を解決したものである。 In particular, the present invention uses paper or nonwoven fabric with high gas permeability as the base sheet, and after forming a sealing layer containing an alkaline filler on one side, a color-changing ink printing layer is formed. The amount of color-changing ink printed can be reduced to form a uniform coating film, and the redox reaction of the color-changing ink printed layer can be performed quickly and uniformly while maintaining sufficient oxygen gas permeability of the base sheet and sealing layer. Thus, the above-mentioned conventional problems are solved.
そして、本考案の表示シートは、使用時に離型
紙を剥脱してその透明感圧接着剤層を、透明フイ
ルム製の包装袋の内面に貼着せしめた後内容物を
収容密封することにより、包装袋内の酸素ガスの
低濃度域における酸素ガス濃度の増減変動に応ず
る変色インキ印刷層の変色状態が外部から容易に
視認できるものである。 When the display sheet of the present invention is used, the release paper is peeled off and the transparent pressure-sensitive adhesive layer is attached to the inner surface of a transparent film packaging bag, after which the contents are contained and sealed. The discoloration state of the discoloration ink printing layer corresponding to the increase/decrease fluctuation in the oxygen gas concentration in the low concentration region of oxygen gas within the bag can be easily recognized from the outside.
なお低酸素ガス濃度域で変色する変色インキ組
成物としてはチアジン系、インジゴイド系、チオ
インジゴイド系染料、硫化染料などの１種以上と
還元性糖類とアルカリ性物質とを樹脂溶液中に溶
解または分散させ、さらに要すればグリセリンを
配合したものが用いられる。 The color-changing ink composition that changes color in a low oxygen gas concentration range is prepared by dissolving or dispersing one or more of thiazine, indigoid, thioindigoid dyes, sulfur dyes, etc., reducing sugars, and alkaline substances in a resin solution. Furthermore, if necessary, one containing glycerin may be used.
以下本考案の実施例を図面により説明する。 Embodiments of the present invention will be described below with reference to the drawings.
図面は酸素濃度表示シートの断面を示し、１は
50g／m2の不織布よりなる基材シート、２はアル
カリ性充填材として水酸化マグネシウムを40〜60
重量％（以下単に％と表示する）、バインダー樹
脂６〜10％、溶剤30〜50％よりなる目止めインキ
を平滑に印刷し、固形分が10g／m2になるように
形成した目止め層、３は下記組成よりなる変色イ
ンキを固形分が５〜10g／m2になるように形成し
た変色インキ印刷層である。 The drawing shows a cross section of the oxygen concentration display sheet, and 1 is
Base sheet made of 50g/ m2 nonwoven fabric, 2 contains 40~60% magnesium hydroxide as an alkaline filler.
A sealing layer made by smoothly printing a sealing ink consisting of weight% (hereinafter simply referred to as %), binder resin 6 to 10%, and solvent 30 to 50% so that the solid content is 10g/m 2 , 3 is a color-changing ink printing layer formed with a color-changing ink having the following composition so that the solid content is 5 to 10 g/m 2 .
メチレンブルー 0.05〜0.3％
サフラニンＴ 0.01〜0.2％
グルコース 10〜50％
グリセリン ５〜15％
セルロースアセテートプロピオネート５〜10％
トルエン 20〜40％
エタノール 20〜40％
を混合した染料インキを準備し
水酸化マグネシウム 40〜60％
セルロースアセテートプロピオネート１〜10％
トルエン 10〜30％
エタノール 10〜30％
を混合したアルカリインキ中に、染料インキ量が
インキ全量の40〜60％になるように混合した。４
は20μ厚のエチレン酢酸ビニル共重合樹脂よりな
る透明オーバーコート層、５はクマロン樹脂配合
合成ゴム系の透明感圧接着剤層、６はシリコン含
浸した離型紙であり、この積層シートは所定寸法
に裁断して使用に供され、0.1％の酸素ガス濃度
を変色境界として、それ以下で赤色、それ以上で
青色に変色して酸素ガス濃度表示作用を生じた。 Prepare a dye ink containing methylene blue 0.05-0.3%, Safranin T 0.01-0.2%, glucose 10-50%, glycerin 5-15%, cellulose acetate propionate 5-10%, toluene 20-40%, and ethanol 20-40%, and hydroxylate it. An alkaline ink containing 40 to 60% magnesium, 1 to 10% cellulose acetate propionate, 10 to 30% toluene, and 10 to 30% ethanol was mixed so that the amount of dye ink was 40 to 60% of the total amount of ink. 4
5 is a transparent overcoat layer made of ethylene-vinyl acetate copolymer resin with a thickness of 20μ, 5 is a transparent pressure-sensitive adhesive layer made of synthetic rubber containing coumaron resin, and 6 is a release paper impregnated with silicone. It was cut into pieces and used, and the color change was set at an oxygen gas concentration of 0.1%, below which the color changed to red, and above which the color changed to blue, producing an oxygen gas concentration display function.
以上、説明したように、本考案の酸素濃度表示
シートは、低酸素ガス濃度域で変色する表示層が
酸素ガス透過性の大きな紙または不織布の片面に
形成したアルカリ性充填材を含有する目止め層面
上に、印刷により形成されているので、変色イン
キの僅かな使用量で大きな変色表示面が得られ、
しかもその変色反応は均一鋭敏であるとともに、
該変色表示面に透明オーバーコート層、透明感圧
接着剤層が設けられて包装袋内面に貼着使用され
るので、特に包装内容物が食品、医薬品のように
不純物の混入を極度に防止する必要がある場合に
は、甚だ好ましく、かつ積層シート状であるので
保存取扱いに便利であるとともに、その製造も印
刷、ラミネート手段により連続生産が容易である
など実用上の効果は優れたものである。 As explained above, in the oxygen concentration display sheet of the present invention, the display layer that changes color in the low oxygen gas concentration region is formed on one side of paper or nonwoven fabric with high oxygen gas permeability, and is formed on the sealing layer containing an alkaline filler. Since it is formed by printing on the top, a large color changing display surface can be obtained with a small amount of color changing ink,
Moreover, the color change reaction is uniform and sensitive, and
A transparent overcoat layer and a transparent pressure-sensitive adhesive layer are provided on the discoloration display surface and are used to adhere to the inner surface of the packaging bag, thereby extremely preventing contamination of the packaged contents with impurities such as foods and medicines. If necessary, it is highly desirable and has excellent practical effects, as it is convenient to store and handle as it is in the form of a laminated sheet, and continuous production is easy using printing and laminating methods. .
図面は本考案の実施例の断面図である。
１……基材シート、２……目止め層、３……変
色インキ印刷層、４……透明オーバーコート層、
５……透明感圧接着剤層、６……離型紙。
The drawing is a cross-sectional view of an embodiment of the present invention. 1... Base sheet, 2... Sealing layer, 3... Color-changing ink printing layer, 4... Transparent overcoat layer,
5...Transparent pressure-sensitive adhesive layer, 6...Release paper.
Claims (1)
アルカリ性充填材を配合してなる目止め層２、低
酸素ガス濃度域で酸化還元して可逆的に変色する
変色インキ印刷層３、透明オーバーコート層４、
透明感圧接着剤層５、離型紙６を順次積層してな
ることを特徴とする酸素濃度表示シート。 A sealing layer 2 made of an alkaline filler compounded on one side of a base sheet 1 made of paper or nonwoven fabric, a color-changing ink printing layer 3 that reversibly changes color through oxidation and reduction in a low oxygen gas concentration range, and a transparent overcoat layer. 4,
An oxygen concentration display sheet characterized by being formed by sequentially laminating a transparent pressure-sensitive adhesive layer 5 and a release paper 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12251481U JPS5832349U (en) | 1981-08-19 | 1981-08-19 | Oxygen concentration display sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12251481U JPS5832349U (en) | 1981-08-19 | 1981-08-19 | Oxygen concentration display sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5832349U JPS5832349U (en) | 1983-03-02 |
| JPS645232Y2 true JPS645232Y2 (en) | 1989-02-09 |
Family
ID=29916432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12251481U Granted JPS5832349U (en) | 1981-08-19 | 1981-08-19 | Oxygen concentration display sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5832349U (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0231499A1 (en) * | 1986-01-02 | 1987-08-12 | Allied Corporation | Activatable time-temperature indicator |
| JP2003322648A (en) * | 2002-04-30 | 2003-11-14 | Toppan Printing Co Ltd | Oxygen indicator |
| JP4241086B2 (en) * | 2003-02-27 | 2009-03-18 | 凸版印刷株式会社 | Oxygen indicator |
| JP5363838B2 (en) * | 2009-03-05 | 2013-12-11 | 公益財団法人東洋食品研究所 | Indicator device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54134492A (en) * | 1978-04-10 | 1979-10-18 | Dainichiseika Color Chem | Composite substance for indicating oxygennsensitive indicating |
| JPS5530605A (en) * | 1978-08-25 | 1980-03-04 | Dainichi Seika Kogyo Kk | Oxygen detective sheet material |
| JPS5543428A (en) * | 1978-09-25 | 1980-03-27 | Toyo Ink Mfg Co Ltd | Oxygen detection member and detection method of presence of oxygen |
| JPS568547A (en) * | 1979-07-03 | 1981-01-28 | Mitsubishi Gas Chem Co Inc | Printable detecting agent |
-
1981
- 1981-08-19 JP JP12251481U patent/JPS5832349U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5832349U (en) | 1983-03-02 |
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