JP7270108B2 - 多層フィルム及びその製造方法 - Google Patents
多層フィルム及びその製造方法 Download PDFInfo
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- JP7270108B2 JP7270108B2 JP2022519111A JP2022519111A JP7270108B2 JP 7270108 B2 JP7270108 B2 JP 7270108B2 JP 2022519111 A JP2022519111 A JP 2022519111A JP 2022519111 A JP2022519111 A JP 2022519111A JP 7270108 B2 JP7270108 B2 JP 7270108B2
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Images
Classifications
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- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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Landscapes
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Description
熱可塑性であり、少なくとも1つの芳香族ポリエステルを含み、1ヘルツ及び25℃における少なくとも70メガパスカルの損失弾性率を有する第1の層と、
第1の層と接触する第2の層であって、熱可塑性であり、1ヘルツ及び25℃における60メガパスカル以下の損失弾性率を有し、
熱可塑性エラストマー及び
(i)非芳香族ジカルボン酸二量体酸を含み、非芳香族ジカルボン酸二量体酸のモル分率が、ポリアミド樹脂を形成するために使用されるジカルボン酸の総モルを基準として、0.10~1.00である、ジカルボン酸と、
(ii)ジアミンと
の反応生成物であるポリアミド樹脂を含み、ポリアミド樹脂は、アミン末端処理されており、アミン末端基を有する、第2の層と、
第2の層と接触する第3の層であって、熱可塑性であり、少なくとも1つの芳香族ポリエステルを含み、1ヘルツ及び25℃における少なくとも70メガパスカルの損失弾性率を有する、第3の層と、を含む、多層フィルムであって、
第2の層は、第1の層と第3の層の間に挟まれている、多層フィルムを提供する。
第1の層は、熱可塑性であり、少なくとも1つの芳香族ポリエステルを含み、1ヘルツ及び25℃における少なくとも70メガパスカルの損失弾性率を有し、
第2の層は、第1の層に接触しており、熱可塑性であり、1ヘルツ及び25℃における60メガパスカル以下の損失弾性率を有し、且つ
第2の層は、熱可塑性エラストマー及び
(i)非芳香族ジカルボン酸二量体酸を含み、非芳香族ジカルボン酸二量体酸のモル分率が、ポリアミド樹脂を形成するために使用されるジカルボン酸の総モルを基準として、0.10~1.00である、ジカルボン酸と、
(ii)ジアミンと
の反応生成物であるポリアミド樹脂を含み、ポリアミド樹脂は、アミン末端処理されており、アミン末端基を有し、
第3の層は、熱可塑性であり、1ヘルツ及び25℃における少なくとも70メガパスカルの損失弾性率を有し、少なくとも1つの芳香族ポリエステルを含み、
第2の層は、第1の層と第3の層の間に挟まれている、方法を提供する。
ABCBA構造のフィルムキャストシートは、全てをLeistritz Extrusionstechnik GMBH,Nuremberg,Germanyから入手した3つの押出機を使用して製造した。層Aは、ゾーン1:260℃、ゾーン2及び3:265℃、ゾーン4~6:268℃、ゾーン7及び8:271℃の温度プロファイルにより18mmの二軸スクリューを使用した。層Bは、ゾーン1:121℃、ゾーン2:135℃、ゾーン3:149℃、ゾーン4:163℃、ゾーン5:190℃、ゾーン6~8:204℃の温度プロファイルを有する27mmの二軸スクリューであった。R4を有する試料について、層B押出機の温度プロファイルは、ゾーン1:149℃、ゾーン2:163℃、ゾーン3:177℃、ゾーン4:190℃、ゾーン5:204℃、ゾーン6:218℃、ゾーン7:265℃、ゾーン8:282℃であった。層Cは、ゾーン1:232℃、ゾーン2:246℃、ゾーン3:254℃、ゾーン4:260℃、ゾーン5:265℃、ゾーン6-ダイ:271℃の温度プロファイルを有する25mm二軸スクリュー押出機であった。全ての押出速度を表2にkg/時で示す。ペレット形態の全ての熱可塑性樹脂をフィーダー(Coperion K-Tron America,Pitman,New Jersey製モデル KCL24/KQX4)により二軸スクリューに供給した。表2(下記)は、製造されたフィルム鋳造シートの説明を記載し、A=スキン層(第1及び第5の層)、B=接続層(第2及び第4の層)、及びC=中心層(第3の層)である。
実施例1のキャストシートから製造したフィルムを、歯科装置、BIOSTAR VI(Scheu-Dental GmbH,Iserlohn,Germany)用の圧力成形機を使用して熱成形した。次に、フィルムキャストシートを直径125mmのディスクへと打ち抜いた。ディスクをBIOSTAR上に置き、IRヒーターを使用して150℃に加熱した後、91psi(627kPa)の圧力下でアライナトレイの3Dプリント成形型に対して熱成形した。次いで、超音波カッターを使用して熱成形トレイをトリミングし、手で3Dプリント成形型から取り外した。
ABCBA構造のフィルムキャストシートは、全てをLeistritz Extrusionstechnik GMBH,Nuremberg,Germanyから入手した3つの押出機を使用して製造した。層Aは、ゾーン1:260℃、ゾーン2及び3:265℃、ゾーン4~6:268℃、ゾーン7及び8:271℃の温度プロファイルにより18mmの二軸スクリューを使用した。層Bは、ゾーン1:121℃、ゾーン2:135℃、ゾーン3:149℃、ゾーン4:163℃、ゾーン5:190℃、ゾーン6~8:204℃の温度プロファイルを有する27mmの二軸スクリューであった。層Cは、ゾーン1:232℃、ゾーン2:246℃、ゾーン3:254℃、ゾーン4:260℃、ゾーン5:265℃、ゾーン6-ダイ:271℃の温度プロファイルを有する25mm二軸スクリュー押出機であった。全ての押出速度を表5にkg/時で示す。ペレット形態の全ての熱可塑性樹脂をフィーダー(Coperion K-Tron America,Pitman,New Jersey製モデルKCL24/KQX4)により二軸スクリューに供給した。最終フィルムキャストシート厚さは、52ミル~55ミル(1.32mm~1.40mm)の範囲であった。表5(下記)は、製造されたフィルムキャストシートの説明を記載し、A=スキン層(第1及び第5の層)、B=接続層(第2及び第4の層)、及びC=中心層(第3の層)である。
元のフィルムキャストシートから100mm×100mmの正方形を切り出した。正方形を装填して実験室二軸フィルムストレッチャー(Bruckner Maschinenbau GmbH&Co.KG,Siegsdorf,Germany製KARO IV)を使用して延伸した。表6に示すように、95℃~130℃の範囲の温度を、機械の全てのゾーンの設定点として使用し、ファン速度設定を50%に設定した。フィルムキャストシートを、10%/秒の速度で同時に二軸延伸した。45秒の予熱及び30秒の後熱を使用した。後熱中、フィルムをサイクル中に到達した最大伸びでクランプして保持した。最終延伸フィルムの厚さを、キャリパーゲージで測定した。表6(下記)は、延伸(配向)フィルムを製造するためのプロセス条件を示す。
2つの二軸スクリュー押出機を使用して、個々の重量測定フィーダーを各々使用し、13層フィルムを製造した。第1の押出機(A層)は、Coperion GmbH,Stuttgart,Germany製K-トロン二軸スクリューフィーダーを有するBerstorff,Germany製の固定40mmであった。第2の押出機は、Coperion GmbHの携帯型K-Tronコンパクト重量測定フィーダーを有する、Berstorff,Germany製の携帯型25mmであった。押出機温度プロファイルは、ゾーン1:176.7℃、ゾーン2:204.4℃、ゾーン3:232.2℃、ゾーン4:260℃、ゾーン5~8:273.9℃であった。フィードブロック及びダイも273.9℃に保持した。フィルムを約3.6fpmの速度でダイから引き出し、次いで、長さ方向に配向し(Killion Davis Standard,Hartford,CT)、ロール1及び3を79.5℃に設定し、ロール2及び4を82℃に設定し、ロール5を54.5℃に設定した。長さ方向への配向に続いて、テンター(Cellier/Bruckner,Germany)を介してフィルムを横方向に配向し、ゾーン1:87.8℃、ゾーン2:93.3℃、ゾーン3:98.9℃、ゾーン 4~6:107.2℃、並びにゾーン7及び8:121.1℃とした。配向後の最終フィルム厚さは、0.12~0.14mmの範囲であった。表7(下記)は、層A=奇数番目の層、及び層B=偶数番目の層であるように層が交互になっている、13個の層フィルムの説明を示す。
Claims (14)
- 熱可塑性であり、少なくとも1つの芳香族ポリエステルを含み、1ヘルツ及び25℃における少なくとも70メガパスカルの損失弾性率を有する第1の層と、
前記第1の層と接触する第2の層であって、熱可塑性であり、1ヘルツ及び25℃における60メガパスカル以下の損失弾性率を有する、第2の層と、
前記第2の層と接触する第3の層であって、熱可塑性であり、少なくとも1つの芳香族ポリエステルを含み、1ヘルツ及び25℃における少なくとも70メガパスカルの損失弾性率を有する、第3の層と、を含む、多層フィルムであって、
前記第2の層は、
熱可塑性エラストマー、並びに下記(i)及び(ii)の反応生成物であるポリアミド樹脂:
(i)非芳香族ジカルボン酸二量体酸を含み、前記非芳香族ジカルボン酸二量体酸のモル分率が、前記ポリアミド樹脂を形成するために使用されるジカルボン酸の総モルを基準として、0.10~1.00である、ジカルボン酸、及び
(ii)ジアミン
を含み、
前記ポリアミド樹脂は、アミン末端処理されており、アミン末端基を有し、
前記第2の層は、前記第1の層と前記第3の層の間に挟まれている、
多層フィルム。 - 前記第2の層が、少なくとも10パーセントの引張伸びに対応して実質的に弾性である、請求項1に記載の多層フィルム。
- 前記多層フィルムが、前記多層フィルムの厚さ方向に沿って見た場合に、少なくとも90パーセントの透明度を有する、請求項1又は2に記載の多層フィルム。
- 前記多層フィルムが、前記多層フィルムの厚さ方向に沿って見た場合に、5ヘイズパーセント未満の透過ヘイズを有する、請求項1~3のいずれか一項に記載の多層フィルム。
- 前記多層フィルムが、一軸配向又は二軸配向である、請求項1~4のいずれか一項に記載の多層フィルム。
- 前記第1の層が、ポリエチレンテレフタレートを含む、請求項1~5のいずれか一項に記載の多層フィルム。
- 前記第1の層が、グリコール変性ポリエチレンテレフタレートを含む、請求項1~6のいずれか一項に記載の多層フィルム。
- 前記第1の層が、それぞれの重量比が4:1~9:1であるポリエチレンテレフタレートとグリコール変性ポリエチレンテレフタレートとのブレンドを含む、請求項1又は7に記載の多層フィルム。
- 前記熱可塑性エラストマーが、アイオノマーエラストマー、熱可塑性ポリウレタンエラストマー、熱可塑性ポリエステルエラストマー、熱可塑性コポリエステルエラストマー、熱可塑性ポリエーテルブロックアミドエラストマー、スチレンブロックコポリマーエラストマー、エチレンとプロピレンのエラストマーコポリマー、又はエチレン-酢酸ビニルエラストマーのうちの少なくとも1つを含む、請求項1~8のいずれか一項に記載の多層フィルム。
- 第4の層及び第5の層を更に含み、前記第4の層は前記第3の層と前記第5の層との間に挟まれ、前記第2及び第4の層が同じ組成を有し、前記第1、第3、及び第5の層が同じ組成を有する、請求項1に記載の多層フィルム。
- 第6の層及び第7の層を更に含み、前記第6の層が前記第5の層と前記第7の層との間に挟まれ、前記第2、第4、及び第6の層が同じ組成を有し、前記第1、第3、第5、及び第7の層が同じ組成を有する、請求項10に記載の多層フィルム。
- 前記非芳香族ジカルボン酸二量体酸の数平均分子量が、300g/mol~1400g/molである、請求項1~11のいずれか一項に記載の多層フィルム。
- 前記非芳香族ジカルボン酸二量体酸中の炭素原子の数が、12~100である、請求項1~12のいずれか一項に記載の多層フィルム。
- 多層フィルムを製造する方法であって、第1、第2、及び第3の層を共押出することを含み、
前記第1の層は、熱可塑性であり、少なくとも1つの芳香族ポリエステルを含み、1ヘルツ及び25℃における少なくとも70メガパスカルの損失弾性率を有し、
前記第2の層は、前記第1の層に接触しており、熱可塑性であり、1ヘルツ及び25℃における60メガパスカル以下の損失弾性率を有し、且つ
前記第2の層は、熱可塑性エラストマー及び
(i)非芳香族ジカルボン酸二量体酸を含み、前記非芳香族ジカルボン酸二量体酸のモル分率が、ポリアミド樹脂を形成するために使用されるジカルボン酸の総モルを基準として、0.10~1.00である、ジカルボン酸と、
(ii)ジアミンと
の反応生成物であるポリアミド樹脂を含み、前記ポリアミド樹脂は、アミン末端処理されており、アミン末端基を有し、
前記第3の層は、熱可塑性であり、1ヘルツ及び25℃における少なくとも70メガパスカルの損失弾性率を有し、少なくとも1つの芳香族ポリエステルを含み、
前記第2の層は、前記第1の層と前記第3の層の間に挟まれている、
方法。
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