JP5706580B1 - 紙容器用積層材及びそれを用いた紙容器 - Google Patents
紙容器用積層材及びそれを用いた紙容器 Download PDFInfo
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- JP5706580B1 JP5706580B1 JP2014509402A JP2014509402A JP5706580B1 JP 5706580 B1 JP5706580 B1 JP 5706580B1 JP 2014509402 A JP2014509402 A JP 2014509402A JP 2014509402 A JP2014509402 A JP 2014509402A JP 5706580 B1 JP5706580 B1 JP 5706580B1
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- layer
- pet resin
- adhesive layer
- heat
- paper
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- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/42—Details of containers or of foldable or erectable container blanks
- B65D5/56—Linings or internal coatings, e.g. pre-formed trays provided with a blow- or thermoformed layer
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
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Abstract
Description
ユニチカ(株)製PET樹脂「MA−2101M」(固有粘度;0.62dl/g、水分量;2,900ppm)100部と、BASFジャパン(株)製鎖延長剤「AdR4368」を30重量%含有したPETのマスターバッチ1.5部とをヘンシェルミキサーで混合攪拌した。この混合樹脂を日立造船(株)製同方向回転2軸押出し機「HMT100」(L/D=38、吐出量;650kg/hr、2ベント孔)に投入し、押出し温度280℃、ベント孔から−755mmHgの高真空下で吸引・脱気しながら押出し、厚さ、35μmのフイルムを成形した。
40m/min.の加工スピードで連続押出し中のスクリュー及び真空吸引を一時停止し、押出し機の第1及び第2ベント孔位置の樹脂をサンプリングし、含有水分量を測定した。水分測定はプラスチック用水分気化装置ADP−351型(京都電子工業株式会社製)及びカールフィッシャー水分計MKC−210型(京都電子工業株式会社製)を用いた。結果を表2に示す。
前記、作製したヒートシール性PETフイルムを1cm×2cmの大きさに裁断し、表裏の表面積が250cm2に相当する多数の裁断片を、500mlのスリ合せ共栓付の硝子製の三角フラスコに投入した。
前記、作製したヒートシール性PETフイルムを5cm×10cmの大きさに裁断し、その5枚(計250cm2)を柑橘類の主要なフレーバー成分であるd−リモネン100%液に浸漬し、23℃の恒温槽に放置した。
前記、作製したヒートシール性PETフイルムを、170℃の恒温槽内に放置して、加熱処理し、非晶部分の異なるサンプルを作製した。非晶部分はセイコー電子DSC220示差走査熱量計でその溶解挙動を測定して、下記式に基づいて結晶部分の割合を測定し、非晶部分(%)=100−結晶部分(%)で算出した。
バリヤー層として、EVOHフイルム(クラレトレーディング(株)製「エバールEF−XLフイルム」12μm)を用いた。
中島精機エンジニアリング(株)ドライラミネート機「XL−3」にヘリオ彫刻によるスクリーン線数95線のグラビアロールをセットし、東洋モートン(株)製ウレタン接着剤(主剤:TM−569、硬化剤:CAT−RT37、溶剤:酢酸エチルエステル)を、EVOHフイルムに28m/min.の塗布速度で塗布し、熱風温度40℃、65℃、55℃の3ゾーンで乾燥させた。そして、前記ヒートシール性PETフイルムと貼合し、46℃の恒温室で3日間エージングを行ない、EVOH樹脂層(12μm:バリヤー層)/ウレタン接着剤層(ドライラミネート接着剤層)/ヒートシール性PET樹脂層(35μm)の積層材を作製した。
紙基材層として、250g/m2の紙基材を用いた。また、紙基材の一方の面(製函時、内側となる面)には、コロナ処理を施してある。
ユニチカ(株)製PET樹脂「MA−2101M」(固有粘度;0.62dl/g、水分量;2,850ppm)100部と、BASFジャパン(株)製鎖延長剤「AdR4368」を30重量%含有したPETのマスターバッチ1.5部とをヘンシェルミキサーで混合攪拌した。この混合樹脂を主押出機である日立造船(株)製同方向回転2軸押出し機「HMT100」(L/D=38、吐出量;650kg/hr、2ベント孔)に投入し、押出し温度280℃、ベント孔から−755mmHgの高真空下で吸引・脱気した後、共押出しTダイに導き、また、デュポン(株)製無水マレイン酸変性エチレンアクリレート樹脂「フサボンド(登録商標)21E830」を副押出機である日立造船(株)製同方向回転2軸押出機「HMT57」(L/D=36、吐出量:200kg/hr、2ベント孔)に投入し、押出温度280℃、ベント孔から−755mmHgの高真空下で吸引・脱気した後、共押出しTダイに導いた。
作製した紙容器用積層材の酸素ガスバリヤー性を、MOCON(登録商標)社製、酸素透過度測定器「OX−TRAN(登録商標)MODEL2/21」を用い、温度30℃、湿度65%RHの条件下で測定した。結果を表8に示す。
1リットルのゲーブルトップ型の紙容器を、ゲーブルトップ型製函機を用いて作製した。製函の条件は、ヒートシール層として通常のPE樹脂層を用いた紙容器用積層材とほぼ同一の条件で作製することが出来た。
ユニチカ(株)製PET樹脂「MA−2101M」(固有粘度;0.62dl/g、水分量;2,850ppm)100部と、BASFジャパン(株)製鎖延長剤「AdR4368」を30重量%含有したPETのマスターバッチ1.5部とをヘンシェルミキサーで混合攪拌した。この混合樹脂を主押出機である日立造船(株)製同方向回転2軸押出し機「HMT100」(L/D=38、吐出量;650kg/hr、2ベント孔)に投入し、押出し温度280℃、ベント孔から−755mmHgの高真空下で吸引・脱気した後、共押出しTダイに導き、また、無水マレイン酸変性エチレンアクリレート樹脂(デュポン(株)製「フサボンド(登録商標)21E830」)を副押出機である日立造船(株)製同方向回転2軸押出機「HMT57」(L/D=36、吐出量:200kg/hr、2ベント孔)に投入し、押出温度280℃、ベント孔から−755mmHgの高真空下で吸引・脱気した後、共押出しTダイに導いた。
次いで、ユニチカ(株)製PET樹脂「MA−2101M」(固有粘度;0.62dl/g、水分量;2,850ppm)100部と、BASFジャパン(株)製鎖延長剤「AdR4368」を30重量%含有したPETのマスターバッチ1.5部とをヘンシェルミキサーで混合攪拌した。この混合樹脂を主押出機である日立造船(株)製同方向回転2軸押出し機「HMT100」(L/D=38、吐出量;650kg/hr、2ベント孔)に投入し、押出し温度280℃、ベント孔から−755mmHgの高真空下で吸引・脱気した後、共押出しTダイに導き、また、デュポン(株)製フサポンド(登録商標)無水マレイン酸変性エチレンアクリレート樹脂「21E830」を副押出機である日立造船(株)製同方向回転2軸押出機「HMT57」(L/D=36、吐出量:200kg/hr、2ベント孔)に投入し、押出温度280℃、ベント孔から−755mmHgの高真空下で吸引・脱気した後、共押出しTダイに導いた。
作製した紙容器用積層材をMOCON(登録商標)社製、酸素透過度測定器「OX−TRAN(登録商標)、MODEL2/21を用い、温度30℃、湿度65%RHの条件下で測定した。結果を表9に示す。
図4に示すようなシール冶具を作製した。図4において、シール冶具30は、エンジニアリングナイロンで断面上下転倒した「T」字上に形成されており、その内部に「U」字状をした高周波加熱コイル31が埋め込まれており、高周波加熱コイル31は高周波電源に接続されている。このシール冶具30においては、交流電流を流すことによって加熱コイル31の周囲に電磁場が発生し、近くの導電体(Al箔層)に高密度のうず電流を発生させ、そのジュール熱によってAl箔層が発熱するものである。
紙容器用積層材を用い、300mlのゲーブルトップ型の紙容器をゲーブルトップ型製函機を用いて作製した。通常のPE樹脂接着剤層を用いた紙容器用積層材とほぼ同一条件で作製することが出来た。
2 スクリュー
3 第1ベント孔
4 第2ベント孔
30 シール冶具
31 高周波加熱コイル
Claims (7)
- 紙基材層/PET樹脂接着剤層/無水マレイン酸変性エチレンアクリレート樹脂接着剤層/バリヤー層/ドライラミネート接着剤層/ヒートシール性PET樹脂層から成り、該PET樹脂接着剤層/無水マレイン酸変性エチレンアクリレート樹脂接着剤層は、主押し出し機に、2個以上の多官能のエポキシ基を有する鎖延長剤を0.2〜2.0%添加した固有粘度が0.55〜0.7dl/gであるPET樹脂を投入し、PET樹脂が加熱・溶融した状態でベント孔から−750mmHg以上の高真空下で吸引・脱気後共押出しTダイに導くとともに、副押出機に、無水マレイン酸変性エチレンアクリレート樹脂を投入し、加熱・溶融後共押出しTダイに導き、PET樹脂接着剤層と無水マレイン酸変性エチレンアクリレート樹脂接着剤層とを、PET樹脂接着剤層をコロナ処理された紙基材層のコロナ処理面に合わせるとともに、無水マレイン酸変性エチレンアクリレート樹脂接着剤層を該バリヤー層/ドライラミネート接着剤層/ヒートシール性PET樹脂層から成る積層材のバリヤー層に合わせて共押出しすることにより形成したものであり、酸素ガスバリヤー性が2.0ml/m2・D・atm以下、該ヒートシール性PET樹脂層の下記の式で示される結晶部分が15%未満、非結晶部分が85%以上であること特徴とする紙容器用積層材。
- 紙基材層/PET樹脂接着剤層/無水マレイン酸変性エチレンアクリレート樹脂接着剤層/バリヤー層/無水マレイン酸変性エチレンアクリレート樹脂接着剤層/ヒートシール性PET樹脂層から成り、該PET樹脂接着剤層/無水マレイン酸変性エチレンアクリレート樹脂接着剤層は、主押し出し機に、2個以上の多官能のエポキシ基を有する鎖延長剤を0.2〜2.0%添加した固有粘度が0.55〜0.7dl/gであるPET樹脂を投入し、PET樹脂が加熱・溶融した状態でベント孔から−750mmHg以上の高真空下で吸引・脱気後共押出しTダイに導くとともに、副押出機に、無水マレイン酸変性エチレンアクリレート樹脂を投入し、加熱・溶融後共押出しTダイに導き、PET樹脂接着剤層と無水マレイン酸変性エチレンアクリレート樹脂接着剤層とを、PET樹脂接着剤層をコロナ処理された紙基材層のコロナ処理面に合わせるとともに、無水マレイン酸変性エチレンアクリレート樹脂接着剤層を該バリヤー層/無水マレイン酸変性エチレンアクリレート樹脂接着剤層/ヒートシール性PET樹脂層から成る積層材のバリヤー層に合わせて共押出しすることにより形成したものであり、酸素ガスバリヤー性が2.0ml/m2・D・atm以下、該ヒートシール性PET樹脂層の下記の式で示される結晶部分が15%未満、非結晶部分が85%以上であること特徴とする紙容器用積層材。
- 前記バリヤー層が、EVOH樹脂層、MXD−6NY樹脂層、PVDC樹脂層、無機(SiOxやAl2O3)蒸着されたPETフイルム層やO−NYフイルム層又はAl箔層であることを特徴とする請求項1記載の紙容器用積層材。
- 前記2個以上の多官能のエポキシ基を有する鎖延長剤が、スチレン−(メタ)アクリル酸メチル−メタクリル酸グリシジルであることを特徴とする請求項1、2、3又は4記載の紙容器用積層材。
- 前記請求項1、2、3、4又は5記載の紙容器用積層材を用い、ヒートシール性PET樹脂層面を内面にしてヒートシールにより接合したことを特徴とする紙容器。
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KR20200140757A (ko) * | 2019-06-07 | 2020-12-16 | 이헌국 | 종이 빨대 제조 시스템 |
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KR102297522B1 (ko) * | 2019-06-07 | 2021-09-03 | 이헌국 | 종이 빨대 제조 시스템 |
KR102297533B1 (ko) * | 2019-06-07 | 2021-09-03 | 이헌국 | 종이 빨대 제조 방법 |
KR102297537B1 (ko) * | 2019-06-07 | 2021-09-03 | 이헌국 | 종이 빨대 |
US12179455B2 (en) | 2019-06-07 | 2024-12-31 | Lee &B Inc. | Paper straw manufacturing method and paper straw manufacturing system |
US12179456B2 (en) | 2019-06-07 | 2024-12-31 | Lee & B Inc. | Paper straw |
Also Published As
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CN104718073A (zh) | 2015-06-17 |
EP2883697A1 (en) | 2015-06-17 |
TW201529310A (zh) | 2015-08-01 |
EP2883697B1 (en) | 2022-05-04 |
KR101879568B1 (ko) | 2018-07-20 |
KR20150087100A (ko) | 2015-07-29 |
EP2883697A4 (en) | 2016-05-18 |
US9926101B2 (en) | 2018-03-27 |
WO2015052741A1 (ja) | 2015-04-16 |
US20160075468A1 (en) | 2016-03-17 |
TWI611924B (zh) | 2018-01-21 |
JPWO2015052741A1 (ja) | 2017-03-09 |
CN104718073B (zh) | 2016-08-17 |
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