JP6330979B2 - フレキソ印刷用金属ナノ粒子インクを用いた積層体の製造方法 - Google Patents
フレキソ印刷用金属ナノ粒子インクを用いた積層体の製造方法 Download PDFInfo
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- JP6330979B2 JP6330979B2 JP2017566433A JP2017566433A JP6330979B2 JP 6330979 B2 JP6330979 B2 JP 6330979B2 JP 2017566433 A JP2017566433 A JP 2017566433A JP 2017566433 A JP2017566433 A JP 2017566433A JP 6330979 B2 JP6330979 B2 JP 6330979B2
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- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 1
- 125000001302 tertiary amino group Chemical group 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M thiocyanate group Chemical group [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 1
- 125000000101 thioether group Chemical group 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical group C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 1
- 239000003021 water soluble solvent Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F5/00—Rotary letterpress machines
- B41F5/24—Rotary letterpress machines for flexographic printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/02—Letterpress printing, e.g. book printing
- B41M1/04—Flexographic printing
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/52—Electrically conductive inks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/38—Improvement of the adhesion between the insulating substrate and the metal
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- Life Sciences & Earth Sciences (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Printed Wiring (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Laminated Bodies (AREA)
- Conductive Materials (AREA)
- Manufacturing Of Electric Cables (AREA)
Description
温度計、攪拌機、滴下漏斗、窒素導入管及び還流冷却器を備えた四つ口フラスコに、メチルエチルケトン(以下、MEK)32質量部及びエタノール32質量部を仕込んで、窒素気流中、攪拌しながら80℃に昇温した。次に、ホスホオキシエチルメタクリレート20質量部、メトキシポリエチレングリコールメタクリレート(分子量1,000)70質量部、グリシジルメタクリレート10質量部、メルカプトプロピオン酸メチル4.1質量部、MEK80質量部からなる混合物、及び重合開始剤(和光純薬株式会社製品「V−65」、2,2’−アゾビス(2,4−ジメチルバレロニトリル))0.5質量部、MEK5質量部からなる混合物をそれぞれ2時間かけて滴下した。滴下終了後、4時間ごとに重合開始剤(日油株式会社製「パーブチルO」0.3質量部を2回添加し、80℃で12時間攪拌した。得られた樹脂溶液に水を加え転相乳化し、減圧脱溶剤した後、水を加えて濃度を調整して、不揮発物含量76.8質量%のグリシジル基を有するアクリル重合体の水溶液が得られた。該樹脂のゲルパーミエーション・クロマトグラフィーにより測定された重量平均分子量はポリスチレン換算で4,200、酸価は96.2mgKOH/gであった。
特許第4573138号公報記載の実施例1にしたがって、銀ナノ粒子とカチオン性基(アミノ基)を有する有機化合物の複合体である灰緑色の金属光沢があるフレーク状の塊からなるカチオン性銀ナノ粒子を得た。
攪拌機、還流冷却管、窒素導入管、温度計及び滴下漏斗を備えた反応容器に、メチルエチルケトン450質量部、メチルメタクリレート46質量部、n−ブチルアクリレート45質量部、メタクリル酸9質量部を混合したアクリル単量体混合物100質量部のうちの5質量部を仕込んだ後、過酸化ベンゾイル0.5重量部を添加した。次いで、反応容器内温度を80℃に保ちながら、前記アクリル単量体混合物の残りの95質量部を120分間かけて滴下して重合することにより、カルボキシル基を有するプライマー層用樹脂のメチルエチルケトン溶液を得た。
攪拌機、還流冷却管、窒素導入管、温度計及び滴下漏斗を備えた反応容器に、メチルエチルケトン450質量部、メチルメタクリレート46質量部、n−ブチルアクリレート45質量部、グリシジルメタクリレート9質量部を混合したアクリル単量体混合物100質量部のうちの5質量部を仕込んだ後、過酸化ベンゾイル0.5重量部を添加した。次いで、反応容器内温度を80℃に保ちながら、前記アクリル単量体混合物の残りの95質量部を120分間かけて滴下して重合することにより、グリシジル基を有するプライマー層用樹脂のメチルエチルケトン溶液を得た。
製造例1で得られたアニオン性銀ナノ粒子5g、エタノール45g、イオン交換水29g、及びレベリング剤(信越シリコーン株式会社製「KF−351A」)0.1gを混合し、3時間攪拌することによって、フレキソ印刷用金属ナノ粒子インク(1)(水性媒体中の炭素原子数1〜3のアルコール含有率69質量%、銀含有率4.7質量%、粘度1.0mPa・s)を調製した。
製造例2で得られたカチオン性銀ナノ粒子5g、メタノール63g、イオン交換水29g、グリセリン3g、及びレベリング剤(信越シリコーン株式会社製「KF−351A」)0.1gを混合し、3時間攪拌することによって、フレキソ印刷用金属ナノ粒子インク(2)(水性媒体中の炭素原子数1〜3のアルコールの含有率68質量%、銀含有率4.8質量%、粘度1.5mPa・s)を調製した。得られたフレキソ印刷用金属ナノ粒子インク(2)を用いて、実施例1と同様に行い積層体を得た。
製造例3で得られたカルボキシル基を有するプライマー層用樹脂のメチルエチルケトン溶液を、乾燥膜厚が0.3μmになるように、ポリイミドフィルム(東レ・デュポン株式会社製「Kapton150ENC」、厚さ50μm)の表面に、スピンコーターを用いて塗工し、熱風乾燥機を用いて80℃で3分間乾燥することによって、プライマー層を形成した基材を得た。
製造例1で得られたアニオン性銀ナノ粒子5g、エタノール9g、イオン交換水86g、及びレベリング剤(信越シリコーン株式会社製「KF−351A」)0.1gを混合し、3時間攪拌することによって、フレキソ印刷用金属ナノ粒子インク(R1)(水性媒体中の炭素原子数1〜3のアルコール含有率9質量%、銀含有率4.5質量%、粘度1.0mPa・s、)を調製した。
製造例2で得られたカチオン性銀ナノ粒子を用いて、表2及び3に示した組成に変更した以外は、実施例1と同様に行い、フレキソ印刷用金属ナノ粒子インク(4)〜(10)及び(R2)〜(R4)を調製した。
製造例4で得られたグリシジル基を有するプライマー層用樹脂のメチルエチルケトン溶液を、乾燥後のプライマー層の膜厚が0.1μmになるように、ポリイミドフィルム(東レ・デュポン株式会社製「Kapton150ENC」、厚さ50μm、長さ1000m)の表面に、小径グラビアコーターを用いて塗工し、熱風乾燥機を用いて80℃で3分間乾燥することによって、プライマー層を形成したポリイミドフィルムのロール基材を得た。
上記の実施例1〜11及び比較例1〜4で得られた積層体それぞれについて、下記の方法により、印刷適性の評価を行った。
上記で得られた印刷パターン(図3)のベタ部をマイクロスコープ(キーエンス社製VHX−900)を用い、倍率180倍にて無作為に写真撮影後2値化処理を行い、インクがはじいた面積比率を評価した。
A:インクが全くはじかなかった。
B:インクが1%未満の範囲ではじいた。
C:インクが1%以上10%未満の範囲ではじいた。
D:インクが10%以上30%未満の範囲ではじいた。
E:インクが30%以上の範囲ではじいた。
実施例1〜10及び比較例1〜4で得られた積層体について、上記で得られた印刷パターン(図3)のベタ部の表面を陰極とし、含リン銅を陽極として、硫酸銅を含む電解めっき液を用いて電流密度2A/dm2で15分間電解めっきを行うことによって、前記導電層の表面に厚さ8μmの銅めっき層を積層した。なお、電解めっき液は、硫酸銅70g/L、硫酸200g/L、塩素イオン50mg/L、トップルチナSF(奥野製薬工業株式会社製の光沢剤)5g/Lを含むものを用いた。次いで、得られた銅めっき層を積層した印刷パターンのベタ部のめっき層表面をマイクロスコープ(株式会社キーエンス製「VHX−900」)を用い、倍率180倍にて無作為に写真撮影後、2値化処理を行い、めっき膜欠陥の面積比率を評価した。
A:全く欠陥がなかった
B:1%未満の範囲で欠陥があった。
C:1%以上10%未満の範囲で欠陥があった。
D:10%以上30%未満の範囲で欠陥があった。
E:30%以上の範囲で欠陥があった。
実施例1〜10及び比較例1〜4で得られた積層体について、上記で得られた線幅100μm、長さ6cmの直線の両端に一辺が2mmの正方形のベタのパッド部を一辺の中点で接続した印刷パターン(図1)及びパッド部間を1mmで20本ならべた印刷パターン(図2)の表面を陰極とし、含リン銅を陽極として、硫酸銅を含む電解めっき液を用いて電流密度2A/dm2で15分間電解めっきを行うことによって、前記導電層の表面に厚さ8μmの銅めっき層を積層した。なお、電解めっき液は、硫酸銅70g/L、硫酸200g/L、塩素イオン50mg/L、トップルチナSF(奥野製薬工業株式会社製の光沢剤)5g/Lを含むものを用いた。次いで、得られた銅めっき層を積層した2種の印刷パターン(図1及び2)のパッド部にテスターの電極をあて、40本(20本×2パターン)中の断線した比率を評価した。
Claims (6)
- 基材表面に、反応性官能基(Y)を有する樹脂(d)を含有するプライマー層(D)を形成した後、金属ナノ粒子(A)及び前記反応性官能基(Y)と反応して結合を形成する反応性官能基(X)を有する有機化合物(B)の複合体と、水及び炭素原子数1〜3のモノアルコールを含み、前記モノアルコールの含有率が45質量%以上である水性媒体(C)とを含有するフレキソ印刷用金属ナノ粒子インクをフレキソ印刷法により印刷することを特徴とする積層体の製造方法。
- 前記金属ナノ粒子(A)のインク中の含有率が1〜20質量%の範囲である請求項1記載の積層体の製造方法。
- 粘度が0.1〜25mPa・sの範囲である請求項1又は2項記載の積層体の製造方法。
- 前記有機化合物(B)が、カチオン性基又はアニオン性基を有するものである請求項1〜3のいずれか1項記載の積層体の製造方法。
- 前記金属ナノ粒子(A)の金属種が、銀、金、銅又はパラジウムである請求項1〜4のいずれか1項記載の積層体の製造方法。
- 請求項1〜5のいずれか1項記載の積層体の製造方法により得られた積層体のフレキソ印刷用金属ナノ粒子インクで形成されたインク層の表面に、さらに無電解めっき及び/又は電解めっきにより金属めっき層(E)を形成することを特徴とする積層体の製造方法。
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