JP2004242521A - Freshness-retaining packaging bag for vegetable and fruit, and packaging body using the same - Google Patents
Freshness-retaining packaging bag for vegetable and fruit, and packaging body using the same Download PDFInfo
- Publication number
- JP2004242521A JP2004242521A JP2003033255A JP2003033255A JP2004242521A JP 2004242521 A JP2004242521 A JP 2004242521A JP 2003033255 A JP2003033255 A JP 2003033255A JP 2003033255 A JP2003033255 A JP 2003033255A JP 2004242521 A JP2004242521 A JP 2004242521A
- Authority
- JP
- Japan
- Prior art keywords
- fruits
- less
- vegetables
- freshness
- film
- 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
Landscapes
- Storage Of Fruits Or Vegetables (AREA)
- Laminated Bodies (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
- Packages (AREA)
Abstract
Description
【０００１】
【発明の属する技術分野】
本発明は、青果物の鮮度保持包装に関するものである。さらに言えば、ＭＡ（Ｍｏｄｉｆｉｅｄ Ａｔｍｏｓｐｈｅｒｅ）包装と一般に称される鮮度保持包装に関するものである。
【０００２】
【従来の技術】
青果物は収穫された後も呼吸作用を持続する。このため収穫後の貯蔵・流通の間および食するまでにも、青果物自身の呼吸によりエネルギーを消費し鮮度の劣化を引き起こす。青果物を低酸素濃度、高炭酸ガス濃度の雰囲気に置くと、青果物の呼吸が抑制され品質劣化を防止することが可能である。ただ、極端に酸素濃度を下げてしまうと、嫌気呼吸せざるをえない状態になり、この嫌気呼吸によって青果物中の糖分が消化され、アルコールやアルデヒド等の発生のため、袋を開けた時には異臭がするなどの問題が発生することがある。すなわち、青果物の呼吸作用に起因する低酸素状態での嫌気呼吸をさせないような酸素雰囲気を保持しつつ、しかも酸素による酸化に起因する品質の劣化を抑えるような条件を保持することが肝要である。一般に青果物を多孔質フィルム等で包装することでこのような青果物の呼吸抑制による鮮度保持効果を得る包装をＭＡ包装という。近年、このＭＡ包装された青果物が量販店の店頭でも多数見られるようになってきた。
【０００３】
この技術に関しては、青果物ごとで大きく異なる呼吸量、最適な包装内の酸素濃度に対し、いかに包装に使用するフィルムの透過量を適切に設定するかが、最も大きな技術のキーポイントとなる。
例えば、特許第３２３０８５３号「青果物鮮度保持包装用フィルム」にあるように平均孔径を１００〜３００μｍにするということが行われている。
この場合、微細孔の大きさを１００μｍ以上にすると孔１個あたりの透過量が大きくなりすぎ、孔数のコントロールを精度良く行う必要がある。フィルムに穿孔加工を行った後製袋をする場合に、一定間隔で孔が存在するとすると、袋サイズ、シール幅によって孔数のバラツキが大きくなる。
１００μｍ以下の微細孔であれば多少の孔数のバラツキは保存性の低下を招かないが孔径が大きくなればなるほどその影響は大きくなる。それを避けるためにはシール位置などの影響を受けないところにしか穿孔を行えないという問題が生じる。ある部分に孔が集中してしまうと、包装内に部分的に酸素濃度が非常に高い部分ができ保存性が損なわれる。
また、包装する青果物に応じて透過量を最適にするという微調整ができないという問題もある。さらに、孔径を大きくすることでフィルム強度の低下を引き起こしたり、包装時や輸送時などで青果物のとがった部分に引っかかって裂けるという問題が発生する。これは、包装時の作業性の低下やハンドリング性の低下など使い勝手の悪さを引き起こし重大な問題となる。
【０００４】
そのため、特許第２１３６５１７号「植物資材の包装方法」に見られるような孔径１００μｍ以下の微細孔をフィルムに穿孔することが行われている。このような微細孔を多数設ける方法に関しては、精度良く透過量の制御が可能であるため呼吸量の小さな青果物を包装する際にはたいへん有効な方法であるが、呼吸量の大きな青果物を包装する場合にはきわめて多数の微細孔を設けなければならず、生産性が悪いという問題があった。また、微細孔を狭い間隔で多数穿孔するとミシン目のように裂けてしまうという問題も発生する。また、１００μｍ以下の微細孔だけでは、包装後青果物から蒸散する水分により包装内に次第に結露を生じ透過量が極端に下がってしまうという問題が起こる可能性がある。
一方で、青果物やその青果物の流通条件等によっては、包装直後に比べて一定期間ののち、青果物の呼吸量が著しく低下するものもある。これらの青果物に適した鮮度保持を有する包装袋は存在しなかった
【０００５】
【特許文献１】
特許第２１３６５１７号
【特許文献２】
特許第３２３０８５３号
【特許文献３】
特許第３０２４３２６号
【０００６】
【発明が解決しようとする課題】
本発明は従来なかった、生産性が良くしかも精度良く透過量を制御することによりすぐれた鮮度保持効果を有しかつ十分な強度、使い勝手の良い青果物鮮度保持包装袋を提供することにある。
【０００７】
【課題を解決するための手段】
本発明は
（１）単層もしくは多層の高分子フィルムよりなる包装袋において、孔径が２０μｍ以上１００μｍ未満の微細孔と孔径が１００μｍ以上７００μｍ以下の微細孔がそれぞれ少なくとも１個以上存在し、かつ全体の孔数に対する２０μｍ以上１００μｍ未満の微細孔の割合が５％以上である青果物鮮度保持包装袋である。
【０００８】
更に好ましい形態としては、
（２）孔径が２０μｍ以上１００μｍ未満の微細孔の平均孔径が、平均孔径／フィルム厚みの比が３以下の関係を満たし、
（３）すべての微細孔の平均孔径が、平均孔径／フィルム厚みの比が３以下の関係を満たし、
（４）孔径が１００μｍ以上７００μｍ以下の微細孔の総開孔面積が、包装する青果物１００ｇ当たり、１．０×１０−８〜１．０ｍｍ２であり、
（５）総開孔面積が、包装する青果物１００ｇ当たり、１．０×１０−８〜１．０ｍｍ２であり、
（６）孔径が２０μｍ以上１００μｍ未満の微細孔と孔径が１００μｍ以上７００μｍ以下の微細孔とが異なる方法で設けられており、
（７）高分子フィルムがポリプロピレン又はポリエチレンの単層のフィルム、もしくはポリプロピレン及びポリエチレンのいずれかを含む層を少なくとも１層有する多層のフィルムであり、
（８）孔径が２０μｍ以上１００μｍ未満の微細孔のうち、孔径／フィルム厚みの比が２．７以下を満たす微細孔が存在する青果物鮮度保持包装袋である。
また、上記に記載の青果物鮮度保持包装袋を用いて青果物を包装した包装体である。
【０００９】
【発明の実施の形態】
本発明に用いる高分子フィルムとしては、青果物の包装に用いることができるものであればどのようなものであっても差し支えはないが、一般には無延伸ポリプロピレン、延伸ポリプロピレン、ポリエチレン、ポリ塩化ビニールポリスチレン等が用いられる。これ等以外のポリアミド、ポリエステル、ポリカーボネート等のフィルム、さらにはポリプロピレン／ポリエチレンやナイロン／ポリエチレン、ナイロン／ポリプロピレン、ポリエステル／ポリエチレン、ポリスチレン／エチレン酢酸ビニル共重合体、ナイロン／エチレンアクリル共重合体などの多層フィルムであっても良く、さらには、これらのフィルム表面にシーラント層を設けたものでも、防曇処理したフィルムであっても何等差し支えはない。これらは共重合体やブレンド物などを用いてもかまわない。
【００１０】
これらのフィルムの厚さは通常１５〜７０μｍのものが用いられる。さらに、これらのフィルムは透明であっても、不透明であっても良く、また印刷を付したものであっても何等差し支えはない。
ただ、消費者は中身を確認して青果物を購入することが多いので、透明であり、防曇性を有するほうがより望ましい。価格等も加味すれば防曇性を有する延伸ポリプロピレンフィルム、ポリエチレンフィルムなどは本発明に適した素材である。
【００１１】
本発明では、これらの素材にそれぞれの青果物の鮮度保持に適した微細孔を付与する。その際、２種類の孔径の微細孔を穿孔する事で常に内容物に対し適切な透過量を有するため良好な鮮度保持効果を有し、しかも生産性、強度にすぐれた鮮度保持包装袋を供給することが可能となった。本発明の鮮度保持包装袋では、２種類の孔のうちより微細な孔が結露により一部塞がれるので、透過量は低下する。低下する割合は２種類の孔の比率によりコントロールし青果物の低下した呼吸量にふさわしい透過量に調整できる。
【００１２】
本発明者は、鋭意検討を行った結果、孔径が２０μｍ以上１００μｍ未満の微細孔と孔径が１００μｍ以上７００μｍ以下の微細孔を穿孔することで内容物の鮮度保持効果を常に良い状態に保つことが可能となることを見出した。さらに、このような２種類の微細孔を穿孔することで、しかも精度良く透過量を制御することができるようになった。孔径が１００μｍ以上７００μｍ以下の微細孔で透過量を設定の透過量に近づけ、孔径が２０μｍ以上１００μｍ未満の微細孔で透過量の微調整を行なう。
【００１３】
穿孔方法は加熱針、レーザー、放電など特に問われない。２種類の孔をもうける方法が同一の方法であっても異なる方法であってもかまわないが、孔径が２０μｍ以上１００μｍ未満の微細孔と孔径が１００μｍ以上７００μｍ以下の微細孔とが異なる方法で設けられている方が、穿孔加工時の生産性などの観点からはより好ましい。
透過量の微調整のためには孔径は２０μｍ以上１００μｍ未満であることが好ましいが、２０μｍ未満であれば１孔あたりの透過量が小さすぎるため、孔数を多く取らざるを得ず、強度低下やコストアップの原因となるためであり、１００μｍ以上となると微細な孔が結露により一部塞がれるという透過量の変化の効果が少なくなり透過量の微調整が難しくなる可能性がある。
１００μｍ以上７００μｍ以下の微細孔に関しては、７００μｍを越えると１孔あたりの透過量が大きすぎるため設定が難しくなり、包装袋内で局所的に酸素濃度が高くなり保存性が低下するといった問題や、青果物の突起などに引っかかり裂けるといった問題が起こりやすく、好ましくは１００〜３００μｍである。
【００１４】
本発明において全体の孔数に対する２０μｍ以上１００μｍ未満の微細孔の割合が５％以上あることが必要である。５％未満であれば透過量の調整が精度良く行えない。好ましくは２０％以上であり、より好ましくは５０％以上である方が透過量の調整の精度はより良好となる。
【００１５】
ここで、包装内外のガスの移動は拡散によって行われるため、透過量は孔径だけではなくフィルム厚みにも影響を受ける。孔径２０μｍ以上１００μｍ未満の微細孔は、平均孔径／フィルム厚みの比が３以下の関係を満たすことが望ましい。透過量の微調整にこの程度の大きさの微細孔の方がより適している。
さらに、この微細孔のうち孔径／フィルム厚みの比が２．７以下である微細孔を適切な数存在させることで、内容物の水分蒸散による結露で包装後一定期間経過後透過量が減少するという効果が顕著に現れる。うち孔径／フィルム厚みの比が２．７以下である微細孔を満たす微細孔は孔径１００μｍの微細孔の内３０％以上であることが好ましい。内容物に応じてこのような設計が可能となる。
【００１６】
また、フィルムが薄くなれば穿孔加工により、より顕著にフィルム強度が低下する可能性があり、その点の配慮も行わなければならない。そのためすべての微細孔の平均孔径が、平均孔径／フィルム厚みが３以下であるという関係を満たすことが望ましい。これより大きくすると強度が低下し実用性がなくなる可能性がある。
例えば、なすのへたのように突起部分を有する青果物を入れる包装袋を設計する場合には、へたが当たる部分に孔径が１００μｍ以上７００μｍ以下の微細孔をもうけないようにすることも可能である。
【００１７】
総開孔面積は青果物ごとで異なるが、中に入れる青果物１００ｇ当たり、１．０×１０−８〜１．０ｍｍ２になるようにするのが好ましく、より好ましくは、１．０×１０−８〜０．４ｍｍ２である。この範囲内にある方が鮮度保持効果はより顕著となる可能性がある。
また、孔径が１００μｍ以上７００μｍ以下の微細孔の総開孔面積も、青果物ごとで異なるが、中に入れる青果物１００ｇ当たり、１．０×１０−８〜１．０ｍｍ２になるようにするのが好ましく、より好ましくは、１．０×１０−８〜０．４ｍｍ２である。この範囲内にある方が鮮度保持効果はより顕著となる可能性がある。
【００１８】
孔の面積がこれらの範囲より低い場合には、包装後の呼吸作用により、流通過程中で無酸素状態となり嫌気呼吸を始めてしまい、異臭を発生する可能性がある。また、孔の面積がこれらの範囲より高い場合には、青果物の呼吸作用が活発化し、糖分が消耗してしまい、ＭＡ包装による保存効果が発揮できない可能性がある。
【００１９】
包装袋の中に入れる青果物は特に限定されないが、例えば、ホウレンソウ、コマツナ、オオバ、シソ、ネギ、ワケギ、アサツキ、ニラ、エシャロット、ナバナ、ミズナ、ミブナ、アシタバ、パセリ、クレソン、ウォータークレス、レモンバーム、バジル、ローズマリー、レモングラス、タイム、セージ、ミント、各種ハーブ類、キャベツ、紫キャベツ、白菜、レタス、サニーレタス、ミツバ、野沢菜、シュンギク、ケール、セリ、セロリ、サラダナ、ブロッコリー、カリフラワー、アスパラガス、ミョウガ、ナス、トマト、ピーマン、シシトウ、カボチャ、パプリカ、トウモロコシ、ズッキーニ、ニガウリ、オクラ、エダマメ、サヤエンドウ、サヤインゲン、グリーンピース、ソラマメ、サンショウ、タケノコ、ゼンマイ、タデ、フキ、ツクシ、ワラビ、ゼンマイなどで本発明の包装方法による効果が認められる。また、モヤシ、豆苗、ブロッコリースプラウト、カイワレダイコン、アルファルファなどの芽物野菜やシイタケ、マイタケ、エノキタケ、マツタケ、ヤマブシタケ、シメジ、マッシュルーム、ナメコなどの菌茸類、大根、ニンジン、かぶら、ジャガイモ、サツマイモ、サトイモ、ヤマイモ、タマネギ、ワサビ、ゴボウ、レンコン、ラッキョウ、ニンニク、ショウガなどの根菜類、ウメ、リンゴ、スダチ、ユズ、ミカン、デコポン、グレープフルーツ、ポンカン、タンカン、各種柑橘類、モモ、カキ、イチゴ、ナシ、バナナ、パパイア、メロン、ウリ、サクランボ、ビワ、イチジク、マンゴー、アボカド、キウイ、ドリアン、グアバ、パイナップル、クランベリー、ブルーベリーなどの果実類でも効果が認められる。これらは、ホール野菜のみならずカット野菜、カット果実の状態でも効果が認められる。
包装前に洗浄、トリミング、殺菌、予冷などの前処理を行ってもかまわないし、ミックスして包装したものでもかまわない。本発明に関しては、キク、カーネーション、ラベンダー、バラ、カスミソウ、ジャスミンなどの花卉類、および前記の青果物や花卉の苗の保管、流通にも有功である。
【００２０】
本発明の青果物用鮮度保持包装袋を用いて青果物を包装した包装体は、例えば、用いる青果物に適した微細孔などを有する本発明の鮮度保持包装袋に青果物を入れ、包装袋の口をヒートシールして包装体とするなどの公知の方法により包装体とすることができる。
【００２１】
【実施例】
《実施例１》 厚み２０μｍの防曇ＯＰＰフィルム（東洋紡績製パイレンフィルムＯＴ 防曇タイプＦ＆Ｇ Ｐ−５５６７）を２００ｍｍ×３５０ｍｍの袋状に加工した。このフィルムにはあらかじめ１袋あたり、レーザーによる平均孔径５２μｍの微細孔が３５個、熱針加工により孔径１８０μｍの微細孔が２個穿孔してある。ほうれんそう２００ｇを入れヒートシールによって密封し、１２℃で１０日保存したが良好な状態が保たれた。なお、評価した試料数はｎ＝２０で行ない、以下の実施例、比較例も同数の試料数で評価を行なった。
《実施例２》 厚み２０μｍの防曇ＯＰＰフィルム（東洋紡績製パイレンフィルムＯＴ 防曇タイプＦ＆Ｇ Ｐ−５５６７）を２００ｍｍ×３５０ｍｍの袋状に加工した。このフィルムにはあらかじめ１袋あたり、レーザーによる平均孔径５０μｍの微細孔が３５個、熱針加工により孔径１２０μｍの微細孔が５個穿孔してある。ほうれんそう２００ｇを入れヒートシールによって密封し、１２℃で１０日保存したが良好な状態が保たれた。
《実施例３》 厚み２０μｍの防曇ＯＰＰフィルム（東洋紡績製パイレンフィルムＯＴ 防曇タイプＦ＆Ｇ Ｐ−５５６７）を２００ｍｍ×３５０ｍｍの袋状に加工した。このフィルムにはあらかじめ１袋あたり、レーザーによる平均孔径５７μｍの微細孔が３５個、熱針加工により孔径５００μｍの微細孔が１個穿孔してある。ほうれんそう２００ｇを入れヒートシールによって密封し、１２℃で１０日保存したが良好な状態が保たれた。
《実施例４》 厚み２０μｍ、４３０ｍｍ幅の防曇ＯＰＰフィルム（東洋紡績製パイレンフィルムＯＴ 防曇タイプＦ＆Ｇ Ｐ−５５６７）の中央付近に穿孔加工を行った。穿孔はレーザーによる平均孔径５８μｍの１０ｍｍ間隔で穿孔し、熱針加工により孔径３００μｍの微細孔を１５０ｍｍ間隔で穿孔してある。このフィルムをピロー包装機にかけて、ほうれんそう２００ｇ入りの包装体を２０袋作製した。この際、袋のピッチは３７０ｍｍ、シール幅は１０ｍｍとした。この場合、各包装の孔数を確認すると平均孔径５８μｍの孔は３４〜３６個、３００μｍの孔は２個であった。いずれの包装も、１２℃で１０日保存したが中のほうれんそうはすべて良好な状態が保たれた。
《実施例５》 厚み２０μｍ、４３０ｍｍ幅の防曇ＯＰＰフィルム（東洋紡績製パイレンフィルムＯＴ 防曇タイプＦ＆Ｇ Ｐ−５５６７）の中央付近に穿孔加工を行った。穿孔はレーザーによる平均孔径５７μｍの１０ｍｍ間隔で穿孔した。このフィルムをピロー包装機にかけて、ほうれんそう２００ｇ入りの包装体を２０袋作製した。この際、袋のピッチは３７０ｍｍ、シール幅は１０ｍｍとした。また、このピロー包装機にはフィルム巻きだし直後に熱針加工により孔径５００μｍの微細孔を穿孔できる機構をもうけておあり、各包装ごとに５００μｍの微細孔を１個設けた。１５０ｍｍ間隔で穿孔してある。この場合、各包装の孔数を確認すると平均孔径５７μｍの孔は３４〜３６個であった。いずれの包装も、１２℃で１０日保存したが中のほうれんそうはすべて良好な状態が保たれた。
《実施例６》 厚み２０μｍの防曇ＯＰＰフィルム（東洋紡績製パイレンフィルムＯＴ 防曇タイプＦ＆Ｇ Ｐ−５５６７）を１６０ｍｍ×２１０ｍｍの袋状に加工した。このフィルムにはあらかじめ１袋あたり、レーザーによる平均孔径５６μｍの微細孔が５１個、熱針加工により孔径４００μｍの微細孔が１個穿孔してある。えだまめ２００ｇを入れヒートシールによって密封し、１５℃で７日保存したが良好な状態が保たれた。
《実施例７》 厚み４０μｍのポリエチレン（ＬＬＤＰＥ）フィルム（東セロ（株）製トーセロＴ．Ｕ．Ｘ． ＴＣ＃４０）を２００ｍｍ×３２０ｍｍの袋状に加工した。このフィルムにはあらかじめ１袋あたり、レーザーによる平均孔径９８μｍの微細孔が４０個、熱針加工により孔径３００μｍの微細孔が２５個穿孔してある。アオウメ１Ｋｇを入れヒートシールによって密封し、１５℃で５日保存したが良好な状態が保たれた。
【００２２】
《比較例１》 厚み２０μｍの防曇ＯＰＰフィルム（東洋紡績製パイレンフィルムＯＴ 防曇タイプＦ＆Ｇ Ｐ−５５６７）を２００ｍｍ×３５０ｍｍの袋状に加工した。このフィルムには穿孔は行わなかった。ほうれんそう２００ｇを入れヒートシールによって密封し、１２℃で保存したが２日目から腐敗と異臭が観察され保存状態は極めて悪かった。
《比較例２》 厚み２０μｍの防曇ＯＰＰフィルム（東洋紡績製パイレンフィルムＯＴ 防曇タイプＦ＆Ｇ Ｐ−５５６７）を２００ｍｍ×３５０ｍｍの袋状に加工した。このフィルムにはあらかじめ１袋あたり、レーザーによる平均孔径５０μｍの微細孔が６４個、穿孔してある。ほうれんそう２００ｇを入れヒートシールによって密封し、１２℃で保存し、８日間良好な状態が保たれた。このフィルムの穿孔加工時は実施例１〜３に比べて３０〜４０％程度生産性が低下した。
《比較例３》 厚み２０μｍの防曇ＯＰＰフィルム（東洋紡績製パイレンフィルムＯＴ 防曇タイプＦ＆Ｇ Ｐ−５５６７）を２００ｍｍ×３５０ｍｍの袋状に加工した。このフィルムにはあらかじめ１袋あたり、熱針による平均孔径７５０μｍの微細孔が５個、穿孔してある。ほうれんそう２００ｇを入れヒートシールによって密封し、１２℃で保存したが、５日後から葉が黄化してきた。
《比較例４》 厚み２０μｍ、４３０ｍｍ幅の防曇ＯＰＰフィルム（東洋紡績製パイレンフィルムＯＴ 防曇タイプＦ＆Ｇ Ｐ−５５６７）の中央付近に穿孔加工を行った。穿孔は熱針加工により孔径３００μｍの微細孔を５０ｍｍ間隔で穿孔してある。このフィルムをピロー包装機にかけて、ほうれんそう２００ｇ入りの包装体を２０袋作製した。この際、袋のピッチは３７０ｍｍ、シール幅は１０ｍｍとした。この場合、各包装の孔数は６〜８個であった。２０袋中１８袋は、１２℃で１０日保存したがすべて良好な状態が保たれたが、２袋は４日程度で異臭が発生した。この包装は孔数が６個のものであった。
《比較例５》 厚み２０μｍの防曇ＯＰＰフィルム（東洋紡績製パイレンフィルムＯＴ 防曇タイプＦ＆Ｇ Ｐ−５５６７）を１６０ｍｍ×２１０ｍｍの袋状に加工した。このフィルムにはあらかじめ１袋あたり、熱針加工により孔径４００μｍの微細孔が２個穿孔してある。えだまめ２００ｇを入れヒートシールによって密封し、１５℃で保存したが３日目で異臭が発生した。
《比較例６》 厚み４０μｍのポリエチレン（ＬＬＤＰＥ）フィルム（東セロ（株）製トーセロＴ．Ｕ．Ｘ． ＴＣ＃４０）を２００ｍｍ×３２０ｍｍの袋状に加工した。このフィルムにはあらかじめ１袋あたり、レーザーによる平均孔径９８μｍの微細孔を２７０個、穿孔してある。アオウメ１Ｋｇを入れヒートシールによって密封し、１５℃で５日保存したが良好な状態が保たれた。しかし、袋強度が著しく低下し、取り扱い中に袋が破損した。
【００２３】
実施例及び比較例の条件を表１に、実施例及び比較例の評価結果を表２に示す。
【００２４】
【表１】
【表２】
【発明の効果】
本発明により、従来なかった、生産性が良くしかも精度良く透過量を制御することによりすぐれた鮮度保持効果を有しかつ十分な強度、使い勝手のよい青果物鮮度保持包装袋及び包装体を提供することができる。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to freshness-preserving packaging for fruits and vegetables. More specifically, the present invention relates to a freshness preserving package generally referred to as MA (Modified Atmosphere) packaging.
[0002]
[Prior art]
Fruits and vegetables continue to breathe after they are harvested. For this reason, during storage and distribution after harvesting and before eating, the fruits and vegetables themselves consume energy due to their breathing and cause deterioration of freshness. When the fruits and vegetables are placed in an atmosphere having a low oxygen concentration and a high carbon dioxide gas concentration, the respiration of the fruits and vegetables can be suppressed, and quality deterioration can be prevented. However, if the oxygen concentration is extremely reduced, anaerobic breathing must be performed, and the sugar in the fruits and vegetables is digested by this anaerobic breathing, and alcohol and aldehydes are generated. Problems such as rubbing may occur. In other words, it is important to maintain an oxygen atmosphere that does not allow anaerobic respiration in a low oxygen state caused by the respiratory action of fruits and vegetables, and also maintain conditions that suppress deterioration in quality caused by oxidation by oxygen. . Generally, packaging in which fruits and vegetables are packaged with a porous film or the like to obtain such a freshness retaining effect by suppressing respiration of fruits and vegetables is called MA packaging. In recent years, many MA-packaged fruits and vegetables have come to be seen at mass retailers.
[0003]
Regarding this technology, the key to the most important technology is how to appropriately set the amount of transmission of the film used for packaging with respect to the respiratory volume that varies greatly between fruits and vegetables and the optimal oxygen concentration in the packaging.
For example, as disclosed in Japanese Patent No. 3230853 “Film for keeping fresh fruits and vegetables”, the average pore diameter is set to 100 to 300 μm.
In this case, if the size of the fine holes is set to 100 μm or more, the permeation amount per hole becomes too large, and it is necessary to control the number of holes with high accuracy. When a bag is formed after perforating a film, if holes are present at regular intervals, the number of holes varies greatly depending on the bag size and the seal width.
In the case of micropores of 100 μm or less, a slight variation in the number of pores does not cause a decrease in storage stability, but the effect increases as the pore diameter increases. In order to avoid this, there is a problem that the perforation can be performed only in a place not affected by the seal position or the like. If the holes are concentrated in a certain portion, a portion having a very high oxygen concentration is partially formed in the package, and storage stability is impaired.
There is also a problem that it is not possible to make a fine adjustment to optimize the amount of permeation according to the fruits and vegetables to be packed. In addition, increasing the pore diameter causes a problem that the strength of the film is reduced, and that the fruits and vegetables are caught and broken at the sharp point during packaging or transportation. This causes inconvenience such as a reduction in workability at the time of packaging and a reduction in handleability, and is a serious problem.
[0004]
Therefore, fine holes having a hole diameter of 100 μm or less, as found in Japanese Patent No. 2136517 “Packaging method of plant material”, are being formed in a film. The method of providing a large number of such micropores is a very effective method for packaging fruits and vegetables with a small amount of respiration because the amount of permeation can be controlled with high precision, but packaging fruits and vegetables with a large amount of respiration is In such a case, an extremely large number of fine holes must be provided, and there is a problem that productivity is poor. Further, when a large number of fine holes are perforated at a narrow interval, there is a problem that the holes are torn like perforations. In addition, if only the micropores having a size of 100 μm or less are used, there is a possibility that moisture evaporating from the fruits and vegetables after packaging gradually causes dew condensation in the packaging and the amount of permeation extremely decreases.
On the other hand, depending on the fruits and vegetables and the distribution conditions of the fruits and vegetables, the respiratory volume of the fruits and vegetables may be significantly reduced after a certain period of time as compared to immediately after packaging. There was no packaging bag with freshness retention suitable for these fruits and vegetables.
[Patent Document 1]
Patent No. 2136517 [Patent Document 2]
Patent No. 3230853 [Patent Document 3]
Patent No. 3024326 [0006]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a fresh fruit / vegetable freshness-keeping packaging bag which has an excellent freshness-maintaining effect by controlling the amount of permeation with good productivity and high accuracy, and which has sufficient strength and is easy to use.
[0007]
[Means for Solving the Problems]
The present invention provides (1) a packaging bag made of a single-layer or multilayer polymer film, wherein at least one micropore having a pore size of 20 μm to less than 100 μm and at least one micropore having a pore size of 100 μm to 700 μm are present, and And a ratio of micropores having a size of 20 μm or more and less than 100 μm to the number of pores is 5% or more.
[0008]
As a more preferred form,
(2) The average pore diameter of the fine pores having a pore diameter of 20 μm or more and less than 100 μm satisfies a relation of a ratio of average pore diameter / film thickness of 3 or less,
(3) The average pore diameter of all the micropores satisfies the relationship of average pore diameter / film thickness ratio of 3 or less,
(4) The total open area of the micropores having a pore diameter of 100 μm or more and 700 μm or less is 1.0 × 10 −8 to 1.0 mm 2 per 100 g of the fruits and vegetables to be packaged,
(5) The total opening area is 1.0 × 10 −8 to 1.0 mm 2 per 100 g of fruits and vegetables to be packed,
(6) Micropores having a pore diameter of 20 μm or more and less than 100 μm and micropores having a pore diameter of 100 μm or more and 700 μm or less are provided by different methods,
(7) the polymer film is a single-layer film of polypropylene or polyethylene, or a multilayer film having at least one layer containing any of polypropylene and polyethylene;
(8) A freshness-keeping packaging bag for fruits and vegetables having micropores satisfying the ratio of pore diameter / film thickness of 2.7 or less among micropores having a pore diameter of 20 μm or more and less than 100 μm.
Moreover, it is the package which packaged fruits and vegetables using the packaging bag for freshness of fruits and vegetables described above.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
As the polymer film used in the present invention, any film can be used as long as it can be used for packaging of fruits and vegetables, but generally unstretched polypropylene, stretched polypropylene, polyethylene, polyvinyl chloride polystyrene Are used. Other films such as polyamide, polyester, polycarbonate, etc., and multilayers such as polypropylene / polyethylene, nylon / polyethylene, nylon / polypropylene, polyester / polyethylene, polystyrene / ethylene-vinyl acetate copolymer, nylon / ethylene acrylic copolymer, etc. Films may be used. Further, even if these films are provided with a sealant layer on their surfaces, or films subjected to antifogging treatment, there is no problem at all. These may be copolymers or blends.
[0010]
The thickness of these films is usually 15 to 70 μm. Further, these films may be transparent or opaque, and may be printed without any problem.
However, since consumers often purchase fruits and vegetables after checking their contents, it is more desirable that they be transparent and have anti-fog properties. Considering the price and the like, a stretched polypropylene film, a polyethylene film or the like having antifogging property is a material suitable for the present invention.
[0011]
In the present invention, these materials are provided with micropores suitable for maintaining the freshness of the fruits and vegetables. At this time, by supplying two kinds of fine pores, it always supplies a proper amount of permeation to the contents, so it has a good freshness holding effect, and supplies a freshness holding packaging bag with excellent productivity and strength. It became possible to do. In the freshness preserving packaging bag of the present invention, since the finer one of the two types of holes is partially closed by condensation, the transmission amount is reduced. The rate of decrease is controlled by the ratio of the two types of holes, and can be adjusted to a permeation rate suitable for the reduced respiration rate of the fruits and vegetables.
[0012]
The present inventor has conducted intensive studies and as a result, it has been found that a hole having a hole diameter of 20 μm or more and less than 100 μm and a hole having a hole diameter of 100 μm or more and 700 μm or less can always maintain a freshness maintaining effect of a content in a good state. I found that it was possible. Further, by perforating such two kinds of fine holes, the amount of transmission can be controlled with high accuracy. The permeation amount is brought close to the set permeation amount with the fine holes having a hole diameter of 100 μm or more and 700 μm or less, and the fine adjustment of the permeation amount is performed with the fine holes having a hole diameter of 20 μm or more and less than 100 μm.
[0013]
The method of perforation is not particularly limited, such as a heating needle, a laser, and electric discharge. The method of forming two types of holes may be the same method or different methods. However, a fine hole having a hole diameter of 20 μm or more and less than 100 μm and a fine hole having a hole diameter of 100 μm or more and 700 μm or less are provided by different methods. Is more preferable from the viewpoint of productivity at the time of drilling.
For fine adjustment of the transmission amount, the pore diameter is preferably 20 μm or more and less than 100 μm, but if it is less than 20 μm, the transmission amount per hole is too small, so that the number of holes has to be increased and the strength is reduced. When the thickness is 100 μm or more, the effect of the change in the transmission amount that the fine holes are partially blocked by dew condensation is reduced, and there is a possibility that the fine adjustment of the transmission amount becomes difficult.
With respect to micropores of 100 μm or more and 700 μm or less, if it exceeds 700 μm, the permeation amount per hole is too large, setting is difficult, and the oxygen concentration is locally increased in the packaging bag and the storage stability is reduced, A problem such as being caught by a protrusion of a fruit or vegetable is likely to occur, and is preferably 100 to 300 μm.
[0014]
In the present invention, it is necessary that the ratio of micropores having a size of 20 μm or more and less than 100 μm to the total number of holes is 5% or more. If it is less than 5%, the transmission amount cannot be adjusted with high accuracy. It is preferably at least 20%, more preferably at least 50%, so that the accuracy of transmission amount adjustment becomes better.
[0015]
Here, since the movement of gas inside and outside the package is performed by diffusion, the amount of permeation is affected not only by the pore diameter but also by the film thickness. Fine pores having a pore diameter of 20 μm or more and less than 100 μm desirably satisfy the relationship of average pore diameter / film thickness of 3 or less. A fine hole of this size is more suitable for fine adjustment of the transmission amount.
Furthermore, by allowing an appropriate number of micropores having a ratio of pore diameter / film thickness of 2.7 or less to exist in the micropores, the amount of permeation decreases after a certain period of time after packaging due to dew condensation due to moisture evaporation of the contents. The effect that appears remarkably. It is preferable that the ratio of the pores satisfying the pore diameter / film thickness ratio of 2.7 or less is 30% or more of the pores having a pore diameter of 100 μm. Such a design is possible depending on the contents.
[0016]
Also, if the film becomes thinner, there is a possibility that the strength of the film may be reduced more markedly by the perforation process, and consideration must be given to that point. Therefore, it is desirable that the average pore diameter of all the micropores satisfies the relationship that the average pore diameter / film thickness is 3 or less. If it is larger than this, the strength may be reduced and practicality may be lost.
For example, in the case of designing a packaging bag for putting fruits and vegetables having a protruding portion like an eggplant, it is also possible to prevent a micropore having a hole diameter of 100 μm or more and 700 μm or less from being applied to the portion hitting the egg. is there.
[0017]
Although the total aperture area varies depending on the fruits and vegetables, it is preferable that the total opening area be 1.0 × 10 −8 to 1.0 mm 2 per 100 g of fruits and vegetables put therein, and more preferably 1.0 × 10 −8. ０．４0.4 mm 2 . If it is within this range, the freshness preserving effect may be more remarkable.
In addition, the total open area of the fine pores having a pore diameter of 100 μm or more and 700 μm or less also differs for each fruit and vegetable, but should be 1.0 × 10 −8 to 1.0 mm 2 per 100 g of fruit and vegetables put therein. Preferably, it is more preferably 1.0 × 10 −8 to 0.4 mm 2 . If it is within this range, the freshness preserving effect may be more remarkable.
[0018]
If the area of the holes is smaller than these ranges, respiratory action after packaging may result in anoxic state during the distribution process and start anaerobic respiration, which may generate an odor. If the area of the pores is higher than these ranges, the respiratory action of the fruits and vegetables will be activated, the sugar will be consumed, and the preservation effect of the MA packaging may not be exhibited.
[0019]
Fruits and vegetables put in the packaging bag are not particularly limited, for example, spinach, komatsuna, psyllium, perilla, leek, scallion, Asatsuki, leek, shallot, nabana, mizuna, mibuna, ashitaba, parsley, watercress, water cress, lemon balm, Basil, rosemary, lemongrass, thyme, sage, mint, various herbs, cabbage, purple cabbage, Chinese cabbage, lettuce, sunny lettuce, honeysuckle, Nozawana, shungiku, kale, celery, celery, saladana, broccoli, cauliflower, asparagus Gas, ginger, eggplant, tomato, pepper, shishito, pumpkin, paprika, corn, zucchini, bitter gourd, okra, edamame, green peas, green bean, green peas, fava bean, sansho, bamboo shoot, spring, tade, fuki, tsuku , Bracken, effect is observed by the packaging method of the present invention in such as the mainspring. In addition, sprout vegetables and shiitake mushrooms such as bean sprouts, bean seedlings, broccoli sprout, sprouts, alfalfa, maitake, enokitake, matsutake, yamabushitake, shimeji, mushroom, nameko and other fungi, radishes, carrots, turnips, potatoes, sweet potatoes, Taro, yam, onion, wasabi, burdock, lotus root, rakkyo, garlic, ginger and other root vegetables, plum, apple, sudachi, yuzu, mandarin orange, dekopon, grapefruit, ponkan, tankan, various citrus, peach, oyster, strawberry, pear Also effective in fruits such as banana, papaya, melon, cucumber, cherry, loquat, fig, mango, avocado, kiwi, durian, guava, pineapple, cranberry and blueberry. These are effective not only in whole vegetables but also in cut vegetables and cut fruits.
Prior to packaging, pretreatments such as washing, trimming, sterilization, and pre-cooling may be performed, or those mixed and packaged. The present invention is also effective in storing and distributing flowers and plants such as chrysanthemums, carnations, lavenders, roses, gypsophila, and jasmine, and seedlings of the fruits and vegetables and flowers.
[0020]
A package in which fruits and vegetables are packaged using the freshness-keeping packaging bag for fruits and vegetables of the present invention is, for example, putting fruits and vegetables in the freshness-keeping packaging bag of the present invention having micropores and the like suitable for the fruits and vegetables used, and heating the mouth of the packaging bag. The package can be formed by a known method such as sealing to form a package.
[0021]
【Example】
Example 1 A 20 μm thick anti-fog OPP film (Toyobo Co., Ltd. Pyrene film OT anti-fog type F & G P-5567) was processed into a 200 mm × 350 mm bag shape. This film is preliminarily provided with 35 micropores having an average pore diameter of 52 μm by laser and two micropores having a pore diameter of 180 μm by hot needle processing per bag. 200 g of spinach was put in, sealed by heat sealing, and stored at 12 ° C. for 10 days, but a good condition was maintained. The number of samples evaluated was n = 20, and the following examples and comparative examples were also evaluated with the same number of samples.
Example 2 An anti-fogging OPP film (Toyobo Co., Ltd. Pyrene film OT anti-fogging type F & G P-5567) having a thickness of 20 μm was processed into a 200 mm × 350 mm bag shape. In this film, 35 micropores having an average pore diameter of 50 μm by laser and 5 micropores having a pore diameter of 120 μm were previously formed per bag by hot needle processing. 200 g of spinach was put in, sealed by heat sealing, and stored at 12 ° C. for 10 days, but a good condition was maintained.
Example 3 An anti-fogging OPP film (Toyobo Co., Ltd. Pyrene film OT anti-fogging type F & G P-5567) having a thickness of 20 μm was processed into a 200 mm × 350 mm bag shape. In this film, 35 micropores having an average pore diameter of 57 μm by laser and one micropore having a pore diameter of 500 μm were previously formed per bag by hot needle processing. 200 g of spinach was put in, sealed by heat sealing, and stored at 12 ° C. for 10 days, but a good condition was maintained.
Example 4 A hole was formed near the center of an anti-fogging OPP film (Pyren film OT, anti-fogging type F & G P-5567 manufactured by Toyobo Co., Ltd.) having a thickness of 20 μm and a width of 430 mm. Drilling is performed by laser at an interval of 10 mm with an average diameter of 58 μm, and fine holes with a diameter of 300 μm are formed at intervals of 150 mm by hot needle processing. The film was set on a pillow wrapping machine to prepare 20 bags of 200 g of spinach. At this time, the bag pitch was 370 mm, and the seal width was 10 mm. In this case, when the number of holes in each package was confirmed, the number of holes having an average diameter of 58 μm was 34 to 36, and the number of holes having an average diameter of 300 μm was two. All packages were stored at 12 ° C. for 10 days, but all the spinach inside remained in good condition.
Example 5 A hole was formed near the center of an anti-fogging OPP film (Pyren film OT, anti-fogging type F & G P-5567 manufactured by Toyobo Co., Ltd.) having a thickness of 20 μm and a width of 430 mm. The perforations were performed at 10 mm intervals with an average pore diameter of 57 μm using a laser. The film was set on a pillow wrapping machine to prepare 20 bags of 200 g of spinach. At this time, the bag pitch was 370 mm, and the seal width was 10 mm. The pillow wrapping machine was provided with a mechanism capable of piercing a fine hole having a hole diameter of 500 μm by hot needle processing immediately after unwinding the film, and one fine hole of 500 μm was provided for each package. It is perforated at 150 mm intervals. In this case, when the number of holes in each package was confirmed, the number of holes having an average hole diameter of 57 μm was 34 to 36. All packages were stored at 12 ° C. for 10 days, but all the spinach inside remained in good condition.
Example 6 A 20 μm thick anti-fogging OPP film (Pyrene film OT, anti-fogging type F & G P-5567 manufactured by Toyobo Co., Ltd.) was processed into a 160 mm × 210 mm bag. The film is preliminarily provided with 51 micropores having an average pore diameter of 56 μm by laser and one micropore having a pore diameter of 400 μm by hot needle processing per bag. 200 g of Edamame was put therein, sealed by heat sealing, and stored at 15 ° C. for 7 days, but a good state was maintained.
Example 7 A 40 μm-thick polyethylene (LLDPE) film (Tocello TUX TC # 40, manufactured by Tosello Co., Ltd.) was processed into a 200 mm × 320 mm bag shape. The film is preliminarily formed with 40 micropores having an average pore diameter of 98 μm by laser and 25 micropores having a pore diameter of 300 μm per hot bag process per bag. 1 kg of Aume was put therein, sealed by heat sealing, and stored at 15 ° C. for 5 days, but a good condition was maintained.
[0022]
Comparative Example 1 An anti-fogging OPP film (Pyren film OT, anti-fogging type F & G P-5567 manufactured by Toyobo Co., Ltd.) having a thickness of 20 μm was processed into a 200 mm × 350 mm bag shape. The film was not perforated. 200 g of spinach was put therein, sealed by heat sealing, and stored at 12 ° C. However, from the second day, decay and an unusual odor were observed, and the storage state was extremely poor.
Comparative Example 2 An anti-fogging OPP film (Pyren film OT, anti-fogging type F & G P-5567 manufactured by Toyobo Co., Ltd.) having a thickness of 20 μm was processed into a 200 mm × 350 mm bag shape. The film is preliminarily provided with 64 micropores having an average pore diameter of 50 μm per laser per bag. 200 g of spinach was put in, sealed by heat sealing, stored at 12 ° C., and kept in a good state for 8 days. At the time of perforation processing of this film, productivity was reduced by about 30 to 40% as compared with Examples 1 to 3.
Comparative Example 3 An anti-fogging OPP film (Pyren film OT, anti-fogging type F & G P-5567 manufactured by Toyobo Co., Ltd.) having a thickness of 20 μm was processed into a 200 mm × 350 mm bag shape. This film is preliminarily perforated with five fine holes having an average pore diameter of 750 μm per bag per bag. 200 g of spinach was put therein, sealed by heat sealing, and stored at 12 ° C., but after 5 days, the leaves had turned yellow.
<< Comparative Example 4 >> Perforation was performed in the vicinity of the center of an anti-fogging OPP film having a thickness of 20 µm and a width of 430 mm (Pyrene film OT, anti-fogging type F & GP-5567 manufactured by Toyobo Co., Ltd.). In the perforation, fine holes having a diameter of 300 μm were formed at intervals of 50 mm by hot needle processing. The film was set on a pillow wrapping machine to prepare 20 bags of 200 g of spinach. At this time, the bag pitch was 370 mm, and the seal width was 10 mm. In this case, the number of holes in each package was 6 to 8. Eighteen of the 20 bags were stored at 12 ° C. for 10 days, but all were kept in a good condition, but two bags produced an unpleasant odor in about 4 days. This package had six holes.
Comparative Example 5 An anti-fogging OPP film (Toyobo Co., Ltd. Pyrene film OT anti-fogging type F & G P-5567) having a thickness of 20 μm was processed into a 160 mm × 210 mm bag shape. In this film, two fine holes having a hole diameter of 400 μm were previously formed per bag by hot needle processing. 200 g of Edamame was put in, sealed by heat sealing, and stored at 15 ° C., but on the third day, an unusual odor was generated.
Comparative Example 6 A polyethylene (LLDPE) film having a thickness of 40 μm (Tocello TUX TC # 40 manufactured by Tosello Co., Ltd.) was processed into a 200 mm × 320 mm bag shape. In this film, 270 fine holes having an average hole diameter of 98 μm by laser were previously perforated per bag. 1 kg of Aume was put therein, sealed by heat sealing, and stored at 15 ° C. for 5 days, but a favorable state was maintained. However, the bag strength was significantly reduced and the bag was damaged during handling.
[0023]
Table 1 shows the conditions of Examples and Comparative Examples, and Table 2 shows the evaluation results of Examples and Comparative Examples.
[0024]
[Table 1]
[Table 2]
【The invention's effect】
According to the present invention, there is provided a fruit and vegetable freshness holding packaging bag and a package which have an excellent freshness holding effect by controlling the amount of permeation with good productivity and high accuracy, and have sufficient strength and ease of use. Can be.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003033255A JP4152214B2 (en) | 2003-02-12 | 2003-02-12 | Freshness-keeping packaging bag for fruits and vegetables and package using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003033255A JP4152214B2 (en) | 2003-02-12 | 2003-02-12 | Freshness-keeping packaging bag for fruits and vegetables and package using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2004242521A true JP2004242521A (en) | 2004-09-02 |
| JP4152214B2 JP4152214B2 (en) | 2008-09-17 |
Family
ID=33019293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003033255A Expired - Fee Related JP4152214B2 (en) | 2003-02-12 | 2003-02-12 | Freshness-keeping packaging bag for fruits and vegetables and package using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4152214B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007186247A (en) * | 2006-01-16 | 2007-07-26 | Sumitomo Bakelite Co Ltd | Package containing bean sprouts |
| GB2453590A (en) * | 2007-10-12 | 2009-04-15 | Sharp Interpack Ltd | Packaging tray with lid having apertures |
| JP2009077650A (en) * | 2007-09-26 | 2009-04-16 | Q P Corp | Method for producing packaged sterilized vegetable |
| WO2012160334A1 (en) * | 2011-05-24 | 2012-11-29 | Poyntz Oliver Nicholas | Insert for prolonging the shelf life of packaged food and especially fruit and vegetables |
| JP2014027884A (en) * | 2012-07-31 | 2014-02-13 | Sumitomo Bakelite Co Ltd | Method for preserving citrus |
| JP5556949B1 (en) * | 2013-11-11 | 2014-07-23 | 住友ベークライト株式会社 | Vegetable and fruit packaging bag and fruit and vegetable packaging |
| JP2014518094A (en) * | 2011-06-29 | 2014-07-28 | ローム アンド ハース カンパニー | How to handle mango |
| CN104757100A (en) * | 2015-04-15 | 2015-07-08 | 翟昕昕 | Mango air conditioned storage and preservation process |
| JP2015212161A (en) * | 2014-05-02 | 2015-11-26 | 住友ベークライト株式会社 | Freshness keeping container for garden stuff and method for manufacturing same, garden stuff-containing package, method for storing garden stuff and method for transporting garden stuff |
| CN114854075A (en) * | 2022-06-06 | 2022-08-05 | 江阴诚公转印包装材料有限公司 | Special fresh-keeping breathing film for fruits and vegetables and preparation method thereof |
-
2003
- 2003-02-12 JP JP2003033255A patent/JP4152214B2/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007186247A (en) * | 2006-01-16 | 2007-07-26 | Sumitomo Bakelite Co Ltd | Package containing bean sprouts |
| JP2009077650A (en) * | 2007-09-26 | 2009-04-16 | Q P Corp | Method for producing packaged sterilized vegetable |
| GB2453590A (en) * | 2007-10-12 | 2009-04-15 | Sharp Interpack Ltd | Packaging tray with lid having apertures |
| WO2012160334A1 (en) * | 2011-05-24 | 2012-11-29 | Poyntz Oliver Nicholas | Insert for prolonging the shelf life of packaged food and especially fruit and vegetables |
| JP2014518094A (en) * | 2011-06-29 | 2014-07-28 | ローム アンド ハース カンパニー | How to handle mango |
| JP2014027884A (en) * | 2012-07-31 | 2014-02-13 | Sumitomo Bakelite Co Ltd | Method for preserving citrus |
| JP5556949B1 (en) * | 2013-11-11 | 2014-07-23 | 住友ベークライト株式会社 | Vegetable and fruit packaging bag and fruit and vegetable packaging |
| JP2015212161A (en) * | 2014-05-02 | 2015-11-26 | 住友ベークライト株式会社 | Freshness keeping container for garden stuff and method for manufacturing same, garden stuff-containing package, method for storing garden stuff and method for transporting garden stuff |
| CN104757100A (en) * | 2015-04-15 | 2015-07-08 | 翟昕昕 | Mango air conditioned storage and preservation process |
| CN114854075A (en) * | 2022-06-06 | 2022-08-05 | 江阴诚公转印包装材料有限公司 | Special fresh-keeping breathing film for fruits and vegetables and preparation method thereof |
| CN114854075B (en) * | 2022-06-06 | 2023-08-22 | 江阴诚公转印包装材料有限公司 | Fresh-keeping breathing film special for fruits and vegetables and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4152214B2 (en) | 2008-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6372510B2 (en) | Fruit and vegetable mold growth suppression packaging bag, package containing fruits and vegetables, and method for maintaining freshness of fruits and vegetables | |
| JP2014208544A (en) | Method of manufacturing packaging bag for keeping freshness of garden stuff | |
| JP6786843B2 (en) | Freshness-preserving packaging bag for root vegetables, packaging with root vegetables, how to prevent germination of root vegetables and how to prevent discoloration of root vegetables | |
| JP6358372B2 (en) | Fruit and vegetable freshness-maintaining packaging bag, package containing fruits and vegetables using the same, and method for maintaining freshness of fruits and vegetables | |
| JP2015037972A (en) | Vegetables and fruits freshness keeping packaging bag, vegetables and fruits-containing package prepared using the same, and vegetables and fruits freshness keeping method | |
| JP2004242521A (en) | Freshness-retaining packaging bag for vegetable and fruit, and packaging body using the same | |
| JP2015212161A (en) | Freshness keeping container for garden stuff and method for manufacturing same, garden stuff-containing package, method for storing garden stuff and method for transporting garden stuff | |
| JP6826681B1 (en) | How to keep the freshness of cut vegetables | |
| JP6439275B2 (en) | Fruit and vegetable freshness-maintaining packaging bag, package containing fruits and vegetables using the same, and method for maintaining freshness of fruits and vegetables | |
| JPH0292236A (en) | Method for preserving cut vegetable | |
| WO2014103920A1 (en) | Produce freshness-retaining packaging bag, produce-containing packaging body using same, and produce freshness-retaining method | |
| JP2007290759A (en) | Packing bag for vegetable and fruit and package of vegetable and fruit | |
| JP2018172176A (en) | Freshness keeping container for garden stuff, garden stuff-containing package, and storage method of garden stuff | |
| JP2012144278A (en) | Packing bag for fruit and vegetable, and fruit and vegetable packing body | |
| JP2020048415A (en) | Method for suppressing growth of germs, packaging container suitable for maintaining freshness of vegetables and fruits, package using the same, and method for maintaining freshness of vegetables and fruits | |
| JP3216401U (en) | Vegetable packaging | |
| JPH06125700A (en) | Sliced cabbage-containing package | |
| JP2018076121A (en) | Vegetables and fruits freshness keeping packaging bag, vegetables and fruits-containing package, and vegetables and fruits freshness keeping method | |
| JP3154442B2 (en) | Package with sliced green onion | |
| JP2023148166A (en) | Packaging body, packaging body producing method, and fruit and vegetable packaging method | |
| JP2024073812A (en) | Freshness-preserving bag, packaging body, and freshness-preserving method | |
| JP2007186247A (en) | Package containing bean sprouts | |
| JP2024073811A (en) | Freshness-preserving bag, packaging body, and freshness-preserving method | |
| JP2014210616A (en) | Packaging bag for preserving freshness of garden stuff, garden stuff-containing package using the same, and method for preserving freshness of garden stuff | |
| JP2022010606A (en) | Packaging material for keeping freshness of garden stuff, packaging body containing garden stuff, packaging method for garden stuff and manufacturing method for packaging material for keeping freshness of garden stuff |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050905 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20070416 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080325 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080516 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20080701 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20080701 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110711 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110711 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120711 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130711 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130711 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140711 Year of fee payment: 6 |
|
| LAPS | Cancellation because of no payment of annual fees |