JP2013052329A5 - - Google Patents
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- JP2013052329A5 JP2013052329A5 JP2011190873A JP2011190873A JP2013052329A5 JP 2013052329 A5 JP2013052329 A5 JP 2013052329A5 JP 2011190873 A JP2011190873 A JP 2011190873A JP 2011190873 A JP2011190873 A JP 2011190873A JP 2013052329 A5 JP2013052329 A5 JP 2013052329A5
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即ち、本発明の多層膜付きフィルムの製造方法は、バックアップローラに支持されて連続走行するウエブの表面に粘度が40mPa・s以下の塗布液を同時重層塗布することにより、多層膜付きフィルムを製造する多層膜付きフィルムの製造方法であって、複数のブロックで構成されたダイと、空気を吸引する吸引装置とを準備する準備工程と、前記ダイの、前記ウエブの走行方向に対して上流側から前記吸引装置により空気を吸引することにより、前記ダイの先端部と前記ウエブとの間の空間を減圧する減圧工程と、前記減圧工程で減圧しながら前記ウエブに前記ダイの先端部から前記塗布液を吐出して前記ウエブに多層膜を製膜する製膜工程と、を備え、前記ダイは、前記複数のブロックを組み合わせることにより形成された前記塗布液を貯留するためのポケットを有し、前記ポケットは、当該ポケットから供給された塗布液がウエブに吐出されて、ウエブまたはウエブ上に形成された塗布膜に接触した位置である塗布点よりも下の位置に配置され、前記ブロックのうち前記走行方向に対して最下流のブロックの先端面である下流リップと、前記ウエブと、の最短距離をd1とし、前記最下流のブロックの一つ上流側にあるブロックの先端面であり、前記下流リップの隣に位置する隣接リップと、前記ウエブと、の最短距離をd2とし、前記隣接リップの前記走行方向の幅をL2とし、最上層を除く全ての膜の総膜厚をh2とし、最下流リップとウエブとの間におけるウエブ搬送方向の圧力勾配をdP/dXとしたとき、式1〜式4の全てを満たすように前記ブロックが設置されて前記ダイが構成されたことを主要な特徴にしている。
10μm≦(d1−d2)≦200μm 式1
d2≦3×h2 式2
50μm≦L2≦200μm 式3
dP/dX>0 式4
これにより、段ムラ、スジの不良を低減することができる
That is, the method for producing a film with a multilayer film according to the present invention produces a film with a multilayer film by simultaneously applying a coating liquid having a viscosity of 40 mPa · s or less onto the surface of a web that is continuously supported by a backup roller. A method for producing a film with a multilayer film, comprising: a preparation step of preparing a die composed of a plurality of blocks and a suction device for sucking air; and an upstream side of the die in the running direction of the web From the tip of the die to the web while reducing the pressure in the pressure reducing step, by reducing the space between the tip of the die and the web by sucking air from the suction device A film forming step of discharging a liquid to form a multilayer film on the web, and the die stores the coating liquid formed by combining the plurality of blocks And a pocket below the application point which is a position where the coating liquid supplied from the pocket is discharged to the web and is in contact with the web or a coating film formed on the web. The shortest distance between the downstream lip, which is the tip surface of the most downstream block with respect to the traveling direction of the blocks, and the web is d1, and is one upstream of the most downstream block. All the films except the uppermost layer are d2 as the shortest distance between the adjacent lip located next to the downstream lip and the web, which is the front end surface of the block, and the width in the running direction of the adjacent lip is L2. the total film thickness and h2, when the pressure gradient of the web conveying direction between the most downstream lip and the web was dP / dX, the die the block is installed so as to satisfy all of the formulas 1 to 4 That is configured is a major feature.
10 μm ≦ (d1−d2) ≦ 200 μm Formula 1
d2 ≦ 3 × h2 Formula 2
50 μm ≦ L2 ≦ 200 μm Formula 3
dP / dX> 0 Equation 4
Thereby, step unevenness and streak defects can be reduced.
また、本発明の塗布装置は、複数のブロックで構成されたダイの先端部から粘度が40mPa・s以下の塗布液を塗布し、バックアップローラに支持されて連続走行するウエブの表面に前記塗布液による2層以上の膜を同時に製膜する塗布装置であって、前記ダイの、前記ウエブの走行方向に対して上流側から空気を吸引することにより前記ダイの先端部と前記ウエブの表面との間の空間を減圧するための吸引装置と、前記複数のブロックを組み合わせることにより形成された前記塗布液を貯留するためのポケットと、を備え、前記ポケットは、当該ポケットから供給された塗布液がウエブに吐出されて、ウエブまたはウエブ上に形成された塗布膜に接触した位置である塗布点よりも下の位置に配置され、前記ブロックのうち前記走行方向に対して最下流のブロックの先端面である下流リップと、前記ウエブと、の最短距離をd1とし、前記最下流のブロックの一つ上流側にあるブロックの先端面であり、前記下流リップの隣に位置する隣接リップと、前記ウエブと、の最短距離をd2とし、前記隣接リップの前記走行方向の幅をL2とし、最上層を除く全ての膜の総膜厚をh2とし、最下流リップとウエブとの間におけるウエブ搬送方向の圧力勾配をdP/dXとしたとき、式1〜式4の全てを満たすように前記ブロックが設置されて前記ダイが構成されたことを主要な特徴にしている。
10μm≦(d1−d2)≦200μm 式1
d2≦3×h2 式2
50μm≦L2≦200μm 式3
dP/dX>0 式4
In addition, the coating apparatus of the present invention applies a coating liquid having a viscosity of 40 mPa · s or less from the tip of a die constituted by a plurality of blocks, and the coating liquid is supported on the surface of a web that is continuously supported by a backup roller. A coating device for simultaneously forming two or more layers of the die by sucking air from the upstream side of the die in the running direction of the web, and the tip of the die and the surface of the web A suction device for decompressing the space between and a pocket for storing the coating liquid formed by combining the plurality of blocks, the pocket being filled with the coating liquid supplied from the pocket Disposed on the web and disposed at a position below the application point that is in contact with the application film formed on the web or on the web. The shortest distance between the downstream lip, which is the front end surface of the most downstream block, and the web is d1, and is the front end surface of the block on the upstream side of one of the most downstream blocks, and is located next to the downstream lip. The shortest distance between the adjacent lip and the web is d2, the width in the running direction of the adjacent lip is L2, the total film thickness of all the films except the uppermost layer is h2, and the most downstream lip and web The main feature is that the die is constructed by installing the block so as to satisfy all of Equations 1 to 4, where dP / dX is the pressure gradient in the web conveyance direction between the two .
10 μm ≦ (d1−d2) ≦ 200 μm Formula 1
d2 ≦ 3 × h2 Formula 2
50 μm ≦ L2 ≦ 200 μm Formula 3
dP / dX> 0 Equation 4
Claims (2)
複数のブロックで構成されたダイと、空気を吸引する吸引装置とを準備する準備工程と、
前記ダイの、前記ウエブの走行方向に対して上流側から前記吸引装置により空気を吸引することにより、前記ダイの先端部と前記ウエブとの間の空間を減圧する減圧工程と、
前記減圧工程で減圧しながら前記ウエブに前記ダイの先端部から前記塗布液を吐出して前記ウエブに多層膜を製膜する製膜工程と、
を備え、
前記ダイは、前記複数のブロックを組み合わせることにより形成された前記塗布液を貯留するためのポケットを有し、
前記ポケットは、当該ポケットから供給された塗布液がウエブに吐出されて、ウエブまたはウエブ上に形成された塗布膜に接触した位置である塗布点よりも下の位置に配置され、
前記ブロックのうち前記走行方向に対して最下流のブロックの先端面である下流リップと、前記ウエブと、の最短距離をd1とし、
前記最下流のブロックの一つ上流側にあるブロックの先端面であり、前記下流リップの隣に位置する隣接リップと、前記ウエブと、の最短距離をd2とし、
前記隣接リップの前記走行方向の幅をL2とし、
最上層を除く全ての膜の総膜厚をh2とし、最下流リップとウエブとの間におけるウエブ搬送方向の圧力勾配をdP/dXとしたとき、式1〜式4の全てを満たすように前記ブロックが設置されて前記ダイが構成された多層膜付きフィルムの製造方法。
10μm≦(d1−d2)≦200μm 式1
d2≦3×h2 式2
50μm≦L2≦200μm 式3
dP/dX>0 式4 A method for producing a film with a multilayer film, in which a film with a multilayer film is produced by simultaneously applying a coating liquid having a viscosity of 40 mPa · s or less onto the surface of a web continuously supported by a backup roller,
A preparation step of preparing a die composed of a plurality of blocks and a suction device for sucking air;
Of the die, by sucking air by the suction device from the upstream side with respect to the running direction of the web, a depressurizing step of depressurizing the space between the a tip portion of the die webs,
A film forming step of forming a multilayer film on the web by discharging the coating liquid from the tip of the die to the web while reducing the pressure in the pressure reducing step;
With
The die has a pocket for storing the coating liquid formed by combining the plurality of blocks,
The pocket is disposed at a position below the application point where the coating liquid supplied from the pocket is discharged to the web and is in contact with the web or a coating film formed on the web,
D1 is the shortest distance between the downstream lip, which is the tip surface of the most downstream block with respect to the traveling direction, and the web among the blocks,
D2 represents the shortest distance between the web and the adjacent lip located next to the downstream lip, which is the front end surface of the block on the upstream side of the most downstream block,
The width of the adjacent lip in the running direction is L2 ,
When the total film thickness of all the films excluding the uppermost layer is h2, and the pressure gradient in the web conveyance direction between the most downstream lip and the web is dP / dX , the above formulas 1 to 4 are satisfied. The manufacturing method of the film with a multilayer film by which the block was installed and the said die | dye was comprised.
10 μm ≦ (d1−d2) ≦ 200 μm Formula 1
d2 ≦ 3 × h2 Formula 2
50 μm ≦ L2 ≦ 200 μm Formula 3
dP / dX> 0 Equation 4
前記ダイの、前記ウエブの走行方向に対して上流側から空気を吸引することにより前記ダイの先端部と前記ウエブの表面との間の空間を減圧するための吸引装置と、
前記複数のブロックを組み合わせることにより形成された前記塗布液を貯留するためのポケットと、
を備え、
前記ポケットは、当該ポケットから供給された塗布液がウエブに吐出されて、ウエブまたはウエブ上に形成された塗布膜に接触した位置である塗布点よりも下の位置に配置され、
前記ブロックのうち前記走行方向に対して最下流のブロックの先端面である下流リップと、前記ウエブと、の最短距離をd1とし、
前記最下流のブロックの一つ上流側にあるブロックの先端面であり、前記下流リップの隣に位置する隣接リップと、前記ウエブと、の最短距離をd2とし、
前記隣接リップの前記走行方向の幅をL2とし、
最上層を除く全ての膜の総膜厚をh2とし、最下流リップとウエブとの間におけるウエブ搬送方向の圧力勾配をdP/dXとしたとき、式1〜式4の全てを満たすように前記ブロックが設置されて前記ダイが構成された塗布装置。
10μm≦(d1−d2)≦200μm 式1
d2≦3×h2 式2
50μm≦L2≦200μm 式3
dP/dX>0 式4 A coating solution having a viscosity of 40 mPa · s or less is applied from the tip of a die composed of a plurality of blocks, and two or more layers of the coating solution are simultaneously formed on the surface of the web that is continuously supported by a backup roller. A coating device for forming a film,
A suction device for reducing the pressure of the space between the tip and the web of the surface of the die by sucking air from the upstream side with respect to the running direction of the die, the web,
A pocket for storing the coating liquid formed by combining the plurality of blocks;
With
The pocket is disposed at a position below the application point where the coating liquid supplied from the pocket is discharged to the web and is in contact with the web or a coating film formed on the web,
D1 is the shortest distance between the downstream lip, which is the tip surface of the most downstream block with respect to the traveling direction, and the web among the blocks,
D2 represents the shortest distance between the web and the adjacent lip located next to the downstream lip, which is the front end surface of the block on the upstream side of the most downstream block,
The width of the adjacent lip in the running direction is L2 ,
When the total film thickness of all the films excluding the uppermost layer is h2, and the pressure gradient in the web conveyance direction between the most downstream lip and the web is dP / dX , the above formulas 1 to 4 are satisfied. A coating device in which a block is installed and the die is configured.
10 μm ≦ (d1−d2) ≦ 200 μm Formula 1
d2 ≦ 3 × h2 Formula 2
50 μm ≦ L2 ≦ 200 μm Formula 3
dP / dX> 0 Equation 4
Priority Applications (2)
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JP2011190873A JP5688345B2 (en) | 2011-09-01 | 2011-09-01 | Coating apparatus and method for producing film with multilayer film |
CN201210320199.7A CN103056066B (en) | 2011-09-01 | 2012-08-31 | The manufacture method of the film of apparatus for coating and band multilayer film |
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JP2011190873A JP5688345B2 (en) | 2011-09-01 | 2011-09-01 | Coating apparatus and method for producing film with multilayer film |
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JP2013052329A JP2013052329A (en) | 2013-03-21 |
JP2013052329A5 true JP2013052329A5 (en) | 2014-02-13 |
JP5688345B2 JP5688345B2 (en) | 2015-03-25 |
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CN103084290B (en) * | 2011-10-31 | 2015-10-28 | 细美事有限公司 | Nozzle unit, substrate board treatment and substrate processing method using same |
JP6420997B2 (en) * | 2014-09-03 | 2018-11-07 | 日東電工株式会社 | Coating apparatus and coating film manufacturing method |
JP6475843B2 (en) * | 2015-08-11 | 2019-02-27 | 富士フイルム株式会社 | Functional film manufacturing method and functional film manufacturing apparatus |
CN110198792B (en) * | 2017-02-03 | 2021-10-26 | 日本汽车能源株式会社 | Coating die, coating device, coating method, and method for manufacturing secondary battery |
KR102237953B1 (en) | 2018-01-08 | 2021-04-08 | 주식회사 엘지화학 | Electrode slurry coating device and method |
JP6473837B1 (en) * | 2018-03-19 | 2019-02-20 | 日東電工株式会社 | Coating apparatus and coating film manufacturing method |
KR102480809B1 (en) * | 2018-08-20 | 2022-12-22 | 후지필름 가부시키가이샤 | Manufacturing method of laminate |
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JP2001170543A (en) * | 1999-12-21 | 2001-06-26 | Konica Corp | Extrusion type die, coating applicator and coating method |
JP2002059062A (en) * | 2000-08-24 | 2002-02-26 | Konica Corp | Extrusion coating method, extrusion coating device |
JP2003260400A (en) * | 2002-03-08 | 2003-09-16 | Fuji Photo Film Co Ltd | Coating method and apparatus |
TW590808B (en) * | 2002-07-26 | 2004-06-11 | Dainippon Printing Co Ltd | Method of forming coating |
US20040247794A1 (en) * | 2003-06-03 | 2004-12-09 | Fuji Photo Film Co., Ltd. | Coating method and coater |
JP4358010B2 (en) * | 2004-03-25 | 2009-11-04 | 富士フイルム株式会社 | Coating apparatus and coating method |
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