WO2022158128A1 - 両面塗工装置 - Google Patents
両面塗工装置 Download PDFInfo
- Publication number
- WO2022158128A1 WO2022158128A1 PCT/JP2021/044042 JP2021044042W WO2022158128A1 WO 2022158128 A1 WO2022158128 A1 WO 2022158128A1 JP 2021044042 W JP2021044042 W JP 2021044042W WO 2022158128 A1 WO2022158128 A1 WO 2022158128A1
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- WO
- WIPO (PCT)
- Prior art keywords
- opening
- die
- gas
- paint
- double
- Prior art date
Links
- 239000011248 coating agent Substances 0.000 title claims abstract description 75
- 238000000576 coating method Methods 0.000 title claims abstract description 75
- 239000000463 material Substances 0.000 claims abstract description 62
- 238000012546 transfer Methods 0.000 claims abstract description 15
- 230000007723 transport mechanism Effects 0.000 claims abstract description 7
- 239000003973 paint Substances 0.000 claims description 56
- 239000000758 substrate Substances 0.000 claims description 50
- 230000032258 transport Effects 0.000 claims description 26
- 238000007599 discharging Methods 0.000 claims description 7
- 239000011267 electrode slurry Substances 0.000 claims description 6
- 239000011148 porous material Substances 0.000 description 16
- 238000001035 drying Methods 0.000 description 15
- 238000011144 upstream manufacturing Methods 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 7
- 239000010408 film Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
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- 238000013461 design Methods 0.000 description 4
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- 238000012986 modification Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009501 film coating Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0254—Coating heads with slot-shaped outlet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/10—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed before the application
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present disclosure relates to a double-sided coating device.
- an electrode active material layer is formed by applying a coating material containing an electrode active material on both sides of the substrate while conveying a substrate such as a metal foil by a roll-to-roll method.
- a double-side coating apparatus a structure is known in which first a first paint is applied to the first surface of the substrate and dried, and then a second paint is applied to the second surface of the substrate and dried. ing.
- first a first paint is applied to the first surface of the substrate and dried, and then a second paint is applied to the second surface of the substrate and dried. ing.
- first the first paint is applied to the first surface of the base material, then the second paint is applied to the second surface, and then the first paint and the second paint are dried at once.
- a tool has been proposed.
- the first paint can be applied to the first surface while the second surface is supported by the backup roll.
- the second coating is applied to the second surface, the first surface coated with the undried first coating cannot be supported by the backup roll. Therefore, it is necessary to apply the second paint to the second surface while the substrate is suspended in the air.
- Patent Document 1 proposes a thin film coating apparatus in which the tip of a nozzle portion that ejects paint is brought into contact with a substrate being conveyed, and the nozzle portion supports the substrate while applying the paint.
- the present disclosure has been made in view of such circumstances, and its purpose is to provide a technique for suppressing the deflection and vibration of the substrate while suppressing the generation of particles in a double-sided coating apparatus.
- a certain aspect of the present disclosure is a double-sided coating device.
- This apparatus comprises a conveying mechanism for continuously conveying a long substrate having a first surface and a second surface opposite to the first surface, and a first die for applying a first paint to the first surface. , a second die positioned downstream of the first die in the conveying direction of the base material to apply the second coating material to the second surface; A target coating height at which the second surface is separated from the second die by a predetermined amount by transferring gas to the second surface including at least one of discharging gas to and sucking gas interposed between the second die and the second surface and a support for supporting the base material.
- the second die has a first opening and a second opening facing the second surface, and a first space communicating with the first opening and a second space communicating with the second opening.
- a second paint flows into the first space, and the first opening constitutes an outlet for the second paint.
- a support portion is arranged in the second space, and the second opening constitutes a transfer port that performs at least one of gas ejection and suction.
- FIG. 4 is a plan view of a second die; It is sectional drawing of the 2nd die
- FIG. 1 is a side view schematically showing a double-sided coating device 1 according to an embodiment.
- FIG. 2 is a side view showing an enlarged part of the double-sided coating apparatus 1.
- the double-sided coating apparatus 1 includes a conveying mechanism 2, a first die 4, a second die 6, a support section 8, and a drying oven 10.
- the first die 4 , the second die 6 and the drying oven 10 are arranged in the listed order from the upstream side in the direction A in which the substrate 12 is conveyed by the conveying mechanism 2 .
- the first die 4, the second die 6 and the drying oven 10 are arranged approximately horizontally.
- the support part 8 is incorporated inside the second die 6 . Therefore, the second die 6 and the support portion 8 are positioned downstream in the transport direction A from the first die 4 .
- the transport mechanism 2 continuously transports the long thin-film base material 12 .
- the base material 12 is in a wound state, is drawn out from the wound body by the conveying mechanism 2, passes through the first die 4, the second die 6 and the drying oven 10, and is wound up on a winding reel (not shown).
- the conveying mechanism 2 has a roll 14 and a retracting section 16 .
- the roll 14 is located on the upstream side of the second die 6 in the conveying direction A of the substrate 12, and conveys the substrate 12 while supporting it on its peripheral surface.
- the roll 14 of the present embodiment is arranged so that the peripheral surface faces the discharge port of the first die 4 with a predetermined gap (coating gap), and functions as a backup roll.
- the base material 12 has a first surface 12a and a second surface 12b opposite to the first surface 12a.
- the roll 14 conveys the base material 12 and passes it through the gap between the first die 4 and the roll 14 while supporting the second surface 12b on its peripheral surface.
- the first die 4 applies the first paint 18 to the first surface 12 a of the base material 12 passing through the gap between the first die 4 and the roll 14 .
- the first die 4 is oriented so that the ejection port faces the horizontal direction, and is horizontally aligned with the roll 14 .
- the double-sided coating apparatus 1 of the present embodiment is used for manufacturing electrode plates of secondary batteries.
- An electrode plate of a secondary battery is a sheet-shaped electrode material obtained by applying an electrode slurry to a current collector and drying the slurry. Therefore, in the present embodiment, the base material 12 is a secondary battery current collector, and the first paint 18 is a secondary battery electrode slurry. The second paint 20 discharged from the second die 6 is also the electrode slurry of the secondary battery.
- a current collector is, for example, a metal foil.
- the electrode slurry is, for example, a mixture of a positive electrode active material or a negative electrode active material and a solvent.
- a positive electrode plate is produced by coating an aluminum foil with a slurry containing a positive electrode active material such as lithium cobalt oxide or lithium iron phosphate.
- the negative electrode plate is prepared by applying a slurry containing a negative electrode active material such as graphite onto a copper foil.
- the first paint 18 and the second paint 20 may be the same paint or different paints.
- the double-sided coating apparatus 1 can also be used for manufacturing articles other than electrode plates.
- the roll 14 feeds the substrate 12 downstream in the transport direction A with the first surface 12a coated with the first paint 18 facing upward and the second surface 12b not coated with the second paint 20 facing downward.
- the base material 12 is delivered from the roll 14 in a substantially horizontal direction.
- the upper end of the peripheral surface of the roll 14 is located at a position higher than the target coating height H1 of the substrate 12 .
- the height of the position 14a at which the substrate 12 is separated from the peripheral surface of the roll 14, that is, the delivery height H2 is higher than the target coating height H1.
- the target coating height H1 is the height at which the second surface 12b is separated from the second die 6 by a predetermined amount.
- a predetermined coating gap G is formed between the ejection port of the second die 6 and the second surface 12b.
- the delivery height H2 is roughly the same height as the upper end of the peripheral surface of the roll 14, but strictly speaking, the base material 12 is pulled downward by the pulling part 16, so that it shifts slightly below the upper end of the peripheral surface. .
- a retracting section 16 is arranged between the roll 14 and the second die 6 in the conveying direction A.
- the substrate 12 delivered from the roll 14 is drawn by the drawing section 16 so as to approach the target coating height H1.
- the lead-in portion 16 has a suction portion 22 that sucks gas such as atmospheric gas (for example, air).
- the retracting portion 16 can retract the base material 12 downward by sucking the atmospheric gas interposed between the second surface 12b and the suction portion 22 .
- the suction unit 22 can be composed of a known suction roller, suction plate, suction type air knife, or the like.
- the height of the suction part 22 is mechanically adjustable, and is adjusted to an optimum height according to the thickness and mass of the base material 12 .
- the retracting section 16 of the present embodiment has a plurality of suction sections 22 arranged in the transport direction A.
- Two suction units 22 are arranged in the transport direction A in FIGS.
- the plurality of suction units 22 are arranged so that the installation height becomes lower toward the downstream side in the transport direction A.
- the suction portion 22 located downstream in the transport direction A is lower than the suction portion 22 located upstream in the transport direction A, in other words, it is closer to the target coating height H1.
- the substrate 12 is drawn to the target coating height H1 by the drawing-in portion 16, and sent out to the downstream side in the conveying direction A.
- Three or more suction units 22 may be arranged in the transport direction A, or one suction unit 22 may be provided. Further, if the delivery height H2 of the rolls 14 substantially coincides with the target coating height H1, the retraction section 16 may be omitted.
- a second die 6 is arranged on the downstream side in the conveying direction A of the retracting section 16 .
- the second die 6 applies the second paint 20 to the second surface 12b of the base material 12 which is floating in the air. At least the area facing the second die 6 of the base material 12 is suspended in the air.
- the second die 6 is oriented so that the discharge port faces upward in the vertical direction, and applies the second paint 20 to the second surface 12b facing downward in the vertical direction.
- a support portion 8 is incorporated in the second die 6 .
- the support part 8 supports the substrate 12 at the target coating height H1 by transferring the gas to the second surface 12b. Transfer of the gas to the second surface 12b includes at least one of ejection of the gas to the second surface 12b and suction of the gas (that is, atmosphere gas) interposed between the second surface 12b and the second surface 12b.
- the support part 8 discharges gas
- the discharged gas is, for example, atmospheric gas.
- the support part 8 of the present embodiment supports the substrate 12 at the target coating height H1 by a combination of gas discharge and suction.
- the support part 8 may support the substrate 12 at the target coating height H1 only by discharging the gas, or may support the substrate 12 at the target coating height H1 only by sucking the gas. good.
- the second die 6 has a first body 24, a second body 26, an intermediate member 28, a first opening 30, a second opening 32, a first space 34, and a second space 36.
- the first main body 24, the second main body 26, and the intermediate member 28 are elongated in the width direction B of the substrate 12 perpendicular to the conveying direction A.
- the first main body 24 is arranged downstream in the transport direction A from the second main body 26 and the intermediate member 28 .
- the second main body 26 is arranged on the upstream side in the transport direction A from the first main body 24 and the intermediate member 28 .
- the intermediate member 28 is sandwiched between the first main body 24 and the second main body 26 in the transport direction A.
- Intermediate member 28 decreases in thickness as it approaches substrate 12 so that first body 24 and second body 26 approach.
- the intermediate member 28 of the present embodiment has a substantially triangular shape that tapers toward the base material 12 when viewed from the width direction B. As shown in FIG.
- a first opening 30 that opens toward the second surface 12 b and a first space 34 that communicates with the first opening 30 are arranged between the first main body 24 and the intermediate member 28 .
- a sheet-like first shim 25 is interposed between the first main body 24 and the intermediate member 28 .
- a gap corresponding to the thickness of the first shim 25 is formed between the first main body 24 and the intermediate member 28 .
- This gap constitutes the first space 34 .
- the open end facing the second surface 12b of the gap constitutes the first opening 30.
- the first main body 24 has a recess elongated in the width direction B on the surface facing the intermediate member 28 side. This recess forms a manifold 38 . Note that the manifold 38 may be provided on the intermediate member 28 .
- a supply pipe for the second paint 20 is connected to the manifold 38, and the second paint 20 is supplied from the outside.
- the end of the first space 34 opposite to the second opening 32 communicates with the manifold 38 .
- the second paint 20 supplied to the manifold 38 flows through the first space 34 and is discharged from the second opening 32 onto the second surface 12b. Therefore, the first space 34 constitutes a flow path for the second paint 20 and the first opening 30 constitutes an outlet for the second paint 20 .
- a second opening 32 that opens toward the second surface 12b and a second space 36 that communicates with the second opening 32 are arranged between the second main body 26 and the intermediate member 28 .
- a sheet-like second shim 27 (see FIG. 3) is interposed between the second main body 26 and the intermediate member 28 .
- a gap corresponding to the thickness of the second shim 27 is formed between the second main body 26 and the intermediate member 28 .
- This gap constitutes the second space 36 .
- the open end facing the second surface 12 b of this gap constitutes the second opening 32 .
- the second opening 32 is located upstream in the transport direction A from the first opening 30
- the second space 36 is located upstream in the transport direction A from the first space 34 . Note that the second opening 32 may be located downstream in the transport direction A from the first opening 30 .
- the support portion 8 is arranged in the second space 36, and the second opening 32 constitutes a transfer port for discharging and sucking gas.
- the second opening 32 constitutes a discharge port
- the support portion 8 only suctions gas the second opening 32 constitutes a suction port.
- the end of the support portion 8 on the second surface 12b side is arranged so as to be flush with the first opening 30 . Therefore, the support portion 8 and the first opening 30 are separated by the same distance from the second surface 12b.
- the support section 8 of the present embodiment has a porous material 40, a pipe 42 and an air supply device 44 as an example.
- the porous material 40 is inserted into the second space 36 , and the tip on the second surface 12 b side is exposed through the second opening 32 .
- the tip of the porous material 40 on the side of the second surface 12 b is substantially flush with the first opening 30 .
- FIG. 3 is a plan view of the second die 6.
- the x marks surrounded by circles represent the flow of gas to be sucked, and the marks surrounded by circles represent the flow of gas to be discharged.
- the porous material 40 of the present embodiment is divided into a plurality of regions having different gas transfer amounts (discharge amount and/or suction amount). For example, each area is airtightly partitioned by a partition plate.
- a region for discharging gas is referred to as a discharge region 40a
- a region for sucking gas is referred to as a suction region 40b.
- the porous material 40 of this embodiment has a plurality of ejection regions 40a and a plurality of suction regions 40b. At least part of the plurality of ejection regions 40a have different gas ejection amounts.
- at least some of the plurality of suction regions 40b differ from each other in gas suction amounts.
- the plurality of regions are arranged in the width direction B of the base material 12 .
- a plurality of ejection regions 40a and a plurality of suction regions 40b are alternately arranged in the width direction B.
- the more the ejection regions 40a are located outside in the width direction B the more the gas ejection amount decreases, and the more the plurality of suction regions 40b are located outside the width direction B, the more the gas suction amount increases. .
- the retraction amount of the base material 12 can be increased toward the outer side in the width direction B. As shown in FIG.
- the more the plurality of ejection regions 40a are located on the outer side in the width direction B the more the gas ejection amount is increased, and the more the plurality of suction regions 40b are located on the outer side of the width direction B, the more the gas suction amount is decreased.
- the extrusion amount of the base material 12 can be increased toward the outer side in the width direction B.
- the plurality of ejection regions 40a may have the same ejection amount, and the plurality of suction regions 40b may have different suction amounts. Also, the ejection amounts of the plurality of ejection regions 40a may be different from each other, and the suction amounts of the plurality of suction regions 40b may be equal to each other. Further, when the support portion 8 only discharges gas, the porous material 40 has only a plurality of discharge regions 40a, and the discharge amounts are different in at least some of the plurality of discharge regions 40a. Further, when the support portion 8 only sucks gas, the porous material 40 has only a plurality of suction regions 40b, and at least some of the plurality of suction regions 40b have different discharge amounts.
- the plurality of areas may be arranged in the transport direction A.
- the ejection area 40a may not be divided into a plurality of areas, and the ejection amount may be uniform.
- the suction area 40b of the support portion 8 may not be divided into a plurality of areas, and the suction amount may be uniform.
- an air supply device 44 is connected to the porous material 40 via a pipe 42 .
- the suction device 44 is composed of, for example, a compressor that discharges gas and a vacuum pump that sucks gas.
- a compressor is connected to each discharge region 40a through a pipe 42, and a vacuum pump is connected to each suction region 40b through a pipe 42.
- the different amount of air supplied to each discharge region 40a may be realized by connecting a separate compressor to each discharge region 40a, or by varying the porosity or the like of each discharge region 40a.
- the amount of suction in each suction region 40b may be realized by connecting a separate vacuum pump to each suction region 40b, or by varying the porosity of each suction region 40b. good too.
- the air supply device 44 By driving the air supply device 44, gas is blown from each discharge region 40a to the second surface 12b, and the gas interposed between the second die 6 and the second surface 12b is sucked from each suction region 40b.
- the substrate 12 floats in the air due to the balance between the positive pressure generated by the ejection of gas from each discharge region 40a and the negative pressure generated by suction of gas from each suction region 40b. It is supported at the working height H1.
- the second paint 20 is applied with a desired coating gap G formed between the base material 12 and the second die 6 and with the flatness of the base material 12 maintained with high accuracy. It can be applied to the second surface 12b.
- the support portion 8 may have another known structure capable of executing at least one of gas ejection and gas suction.
- a drying furnace 10 is arranged on the downstream side of the second die 6 in the transport direction A.
- gas injection nozzles 46 for blowing out gas (for example, hot air) for drying the first coating material 18 and the second coating material 20 are provided above and below.
- the substrate 12 having the first surface 12a coated with the first paint 18 and the second surface 12b coated with the second paint 20 is suspended in the drying furnace 10 by the gas jetted from the gas injection nozzle 46. is transported.
- the substrate 12, from which the first coating material 18 and the second coating material 20 have been dried in the course of passing through the drying oven 10, is taken up on a take-up reel after leaving the drying oven 10. As shown in FIG.
- the double-side coating apparatus 1 includes the transport mechanism 2, the first die 4, the second die 6, and the support section 8.
- the transport mechanism 2 continuously transports the substrate 12 having the first surface 12a and the second surface 12b.
- the first die 4 applies the first paint 18 to the first surface 12a.
- the second die 6 is positioned downstream in the transport direction A from the first die 4 and applies the second paint 20 to the second surface 12b.
- the support portion 8 is located downstream of the first die 4 in the conveying direction A, and is used for discharging gas to the second surface 12b and sucking gas interposed between the support portion 8 and the second surface 12b.
- Substrate 12 is supported at target coating height H1 by transport of gas containing at least one.
- the second die 6 has on its surface a first opening 30 and a second opening 32 that open toward the second surface 12b, and a first space 34 that communicates with the first opening 30 and a second space 34 that communicates with the second opening 32. 2 space 36 inside.
- the second paint 20 flows through the first space 34 , and the first opening 30 constitutes an outlet for the second paint 20 .
- a support portion 8 (porous material 40 in this embodiment) is arranged in the second space 36, and the second opening 32 constitutes a transfer port for at least one of gas ejection and suction.
- the base material 12 is supported at one end by a roll 14 and at the other end on the downstream side of the drying oven 10 by a transport roll or a take-up roll (not shown).
- a transport roll or a take-up roll (not shown).
- the portion of the substrate 12 between the two rolls is suspended in the air, and a state in which the substrate 12 is not in contact with the second die 6 can be created.
- the base material 12 in a state of being suspended in the air bends considerably due to its own weight.
- the vibration of the base material 12 due to the rotation of the rolls 14, the hot air from the drying furnace 10, etc. is likely to propagate through the base material 12, making it difficult to stably hold the position of the base material 12. become.
- the base material 12 is distorted and the flatness is lowered.
- the support unit 8 performs at least one of gas discharge and suction to the substrate 12, thereby performing target coating while the substrate 12 is suspended in the air. It is supported at height H1. Also, the support part 8 is incorporated inside the second die 6 . Therefore, the base material 12 can be supported at the target coating height H1 at a position extremely close to the ejection port of the second coating material 20 . As a result, generation of particles can be suppressed, and distortion and vibration of the substrate 12 at the ejection position of the second paint 20 can be suppressed.
- the second paint 20 can be applied to the second surface 12b while the position and flatness of the substrate 12 are maintained with high accuracy. As a result, it is possible to form a coating film of the second paint 20 with higher precision and higher quality.
- the support portion 8 is divided into a plurality of regions with different gas transfer amounts.
- the porous material 40 of the support portion 8 is divided into a plurality of ejection regions 40a and a plurality of suction regions 40b. At least some of the plurality of ejection regions 40a have different gas ejection amounts. At least some of the plurality of suction regions 40b have different gas suction amounts.
- the plurality of regions are arranged in the width direction B of the base material 12 .
- the substrate 12 tends to bend more easily at both ends than at the central portion in the width direction B. As shown in FIG. Therefore, by making it possible to adjust the extrusion amount and the retraction amount of the base material 12 in the width direction B, the flatness of the base material 12 can be further improved.
- the end of the support portion 8 on the second surface 12b side is arranged so as to be flush with the first opening 30 .
- the tip of the porous material 40 of the support portion 8 is flush with the first opening 30 .
- the first die 4 may also be provided with the support portion 8 .
- the first paint 18 is applied from the first die 4 to the first surface 12a while the substrate 12 is suspended in the air.
- FIG. 4 is a cross-sectional view of the second die 6 included in the double-sided coating apparatus 1 according to the modification.
- the second die 6 of this modified example has two second openings 32 arranged so as to sandwich the first opening 30 in the transport direction A. As shown in FIG. The support portion 8 then transfers the gas through each second opening 32 .
- the second die 6 is provided with two second openings 32 and two second spaces 36 .
- the two second openings 32 are arranged so as to sandwich the first opening 30 in the transport direction A.
- the two second spaces 36 are arranged so as to sandwich the first space 34 in the transport direction A.
- a second space 36 located upstream from the first space 34 communicates with a second opening 32 located upstream from the first opening 30 .
- a second space 36 positioned downstream of the first space 34 communicates with a second opening 32 positioned downstream of the first opening 30 .
- the support part 8 has two sets of combinations of the porous material 40, the pipe 42 and the air supply device 44.
- One porous material 40 is inserted into one second space 36 and the other porous material 40 is inserted into the other second space 36 .
- Each porous material 40 is connected to a separate air supply device 44 via tubing 42 .
- At least one of gas ejection and suction is performed from each of the second openings 32 to support the substrate 12 .
- the two porous materials 40 may be connected to a common air supply device 44 .
- the position and flatness of the portion of the substrate 12 facing the first opening 30 can be determined with higher accuracy. can be maintained. Further, by supporting the substrate 12 on the downstream side in the conveying direction A of the first opening 30, the vibration of the substrate 12 caused by being exposed to the hot air in the drying oven 10 is reduced to the first opening of the substrate 12. Propagation to the portion facing 30 can be suppressed. As a result, a coating film of the second paint 20 having a more uniform film thickness can be formed.
- Embodiments may be specified by items described below.
- the second die (6) has a first opening (30) and a second opening (32) that open toward the second surface (12b), and a first space (34) that
- the second die (6) has two second openings (32) arranged to sandwich the first opening (30) in the conveying direction (A), the support (8) transports gas through each second opening (32); A double-sided coating apparatus (1) according to item 1.
- the support part (8) is divided into a plurality of regions (40a, 40b) in which the amount of gas transferred is different from each other, 3.
- the plurality of regions (40a, 40b) are arranged in the width direction (B) of the substrate (12), A double-sided coating apparatus (1) according to item 3.
- a double-sided coating apparatus (1) according to item 3.
- the tip of the support portion (8) on the second surface (12b) side is arranged so as to be flush with the first opening (30), 5.
- a double-sided coating apparatus (1) according to any one of items 1 to 4.
- the base material (12) is a current collector of a secondary battery
- the first paint (18) and the second paint (20) are secondary battery electrode slurries, A double-sided coating apparatus (1) according to any one of items 1 to 5.
- the present disclosure can be used for double-sided coating equipment.
- 1 double-sided coating device 2 transport mechanism, 4 first die, 6 second die, 8 support part, 12 substrate, 12a first surface, 12b second surface, 18 first paint, 20 second paint, 30 second 1 opening, 32 second opening, 34 first space, 36 second space, A conveying direction, B width direction, H1 target coating height.
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- Materials Engineering (AREA)
- Coating Apparatus (AREA)
Abstract
Description
図4は、変形例に係る両面塗工装置1が備える第2ダイ6の断面図である。本変形例の第2ダイ6は、搬送方向Aで第1開口30を挟むように配置される2つの第2開口32を有する。そして、支持部8は、各第2開口32を介して気体を移送する。図4に示す例では、第2ダイ6に2つの第2開口32および2つの第2空間36が設けられている。2つの第2開口32は、搬送方向Aで第1開口30を挟むように配置される。2つの第2空間36は、搬送方向Aで第1空間34を挟むように配置される。第1空間34より上流側に位置する第2空間36は、第1開口30より上流側に位置する第2開口32に連通する。第1空間34より下流側に位置する第2空間36は、第1開口30より下流側に位置する第2開口32に連通する。
[項目1]
第1面(12a)、および第1面(12a)とは反対側の第2面(12b)を有する長尺状の基材(12)を連続搬送する搬送機構(2)と、
第1面(12a)に第1塗料(18)を塗布する第1ダイ(4)と、
第1ダイ(4)よりも基材(12)の搬送方向(A)の下流側に位置して第2面(12b)に第2塗料(20)を塗布する第2ダイ(6)と、
第1ダイ(4)よりも搬送方向(A)の下流側に位置し、第2面(12b)への気体の吐出および第2面(12b)との間に介在する気体の吸引の少なくとも一方を含む第2面(12b)に対する気体の移送により、第2ダイ(6)から第2面(12b)が所定量だけ離間する目標塗工高さ(H1)に基材(12)を支持する支持部(8)と、を備え、
第2ダイ(6)は、第2面(12b)に向けて開口する第1開口(30)および第2開口(32)と、第1開口(30)に連通する第1空間(34)および第2開口(32)に連通する第2空間(36)と、を有し、
第1空間(34)には第2塗料(20)が流れ、第1開口(30)は第2塗料(20)の吐出口を構成し、第2空間(36)には支持部(8)が配置され、第2開口(32)は気体の吐出および吸引の少なくとも一方を行う移送口を構成する、
両面塗工装置(1)。
[項目2]
第2ダイ(6)は、搬送方向(A)で第1開口(30)を挟むように配置される2つの第2開口(32)を有し、
支持部(8)は、各第2開口(32)を介して気体を移送する、
項目1に記載の両面塗工装置(1)。
[項目3]
支持部(8)は、気体の移送量が互いに異なる複数の領域(40a,40b)に区画される、
項目1または2に記載の両面塗工装置(1)。
[項目4]
複数の領域(40a,40b)は、基材(12)の幅方向(B)に並ぶ、
項目3に記載の両面塗工装置(1)。
[項目5]
支持部(8)の第2面(12b)側の先端は、第1開口(30)と面一となるように配置される、
項目1乃至4のいずれかに記載の両面塗工装置(1)。
[項目6]
基材(12)は、二次電池の集電体であり、
第1塗料(18)および第2塗料(20)は、二次電池の電極スラリーである、
項目1乃至5のいずれかに記載の両面塗工装置(1)。
Claims (6)
- 第1面、および前記第1面とは反対側の第2面を有する長尺状の基材を連続搬送する搬送機構と、
前記第1面に第1塗料を塗布する第1ダイと、
前記第1ダイよりも前記基材の搬送方向の下流側に位置して前記第2面に第2塗料を塗布する第2ダイと、
前記第1ダイよりも前記搬送方向の下流側に位置し、前記第2面への気体の吐出および前記第2面との間に介在する気体の吸引の少なくとも一方を含む前記第2面に対する気体の移送により、前記第2ダイから前記第2面が所定量だけ離間する目標塗工高さに前記基材を支持する支持部と、を備え、
前記第2ダイは、前記第2面に向けて開口する第1開口および第2開口と、前記第1開口に連通する第1空間および前記第2開口に連通する第2空間と、を有し、
前記第1空間には前記第2塗料が流れ、前記第1開口は前記第2塗料の吐出口を構成し、前記第2空間には前記支持部が配置され、前記第2開口は気体の吐出および吸引の少なくとも一方を行う移送口を構成する、
両面塗工装置。 - 前記第2ダイは、前記搬送方向で前記第1開口を挟むように配置される2つの前記第2開口を有し、
前記支持部は、各第2開口を介して気体を移送する、
請求項1に記載の両面塗工装置。 - 前記支持部は、気体の移送量が互いに異なる複数の領域に区画される、
請求項1または2に記載の両面塗工装置。 - 前記複数の領域は、前記基材の幅方向に並ぶ、
請求項3に記載の両面塗工装置。 - 前記支持部の前記第2面側の先端は、前記第1開口と面一となるように配置される、
請求項1乃至4のいずれか1項に記載の両面塗工装置。 - 前記基材は、二次電池の集電体であり、
前記第1塗料および前記第2塗料は、二次電池の電極スラリーである、
請求項1乃至5のいずれか1項に記載の両面塗工装置。
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US18/254,826 US20240024913A1 (en) | 2021-01-19 | 2021-12-01 | Double-sided coating apparatus |
CN202180079933.2A CN116568409A (zh) | 2021-01-19 | 2021-12-01 | 双面涂布装置 |
EP21921230.5A EP4282540A4 (en) | 2021-01-19 | 2021-12-01 | DOUBLE-SIDED COATING DEVICE |
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CN115183562A (zh) * | 2022-08-25 | 2022-10-14 | 安徽省金正塑业有限公司 | 一种用于pvc片材加工的恒温烘干设备 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0615761U (ja) * | 1992-07-29 | 1994-03-01 | 石川島播磨重工業株式会社 | 塗工装置 |
JPH0857396A (ja) * | 1994-08-26 | 1996-03-05 | Chugai Ro Co Ltd | ダイコータ |
JP2005246194A (ja) * | 2004-03-03 | 2005-09-15 | Toyota Motor Corp | 両面塗布装置 |
JP2011143388A (ja) | 2010-01-18 | 2011-07-28 | Clean Technology Kk | 薄膜塗工装置並びに両面薄膜塗工装置 |
JP2014079708A (ja) * | 2012-10-17 | 2014-05-08 | Tokyo Ohka Kogyo Co Ltd | 両面塗布装置 |
JP2019130491A (ja) * | 2018-02-01 | 2019-08-08 | パナソニックIpマネジメント株式会社 | 塗工方法および塗工装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4865893B2 (ja) * | 2009-09-28 | 2012-02-01 | パナソニック株式会社 | ダイヘッドおよび液体塗布装置 |
JP6539069B2 (ja) * | 2015-03-09 | 2019-07-03 | 東レエンジニアリング株式会社 | 塗布装置 |
-
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0615761U (ja) * | 1992-07-29 | 1994-03-01 | 石川島播磨重工業株式会社 | 塗工装置 |
JPH0857396A (ja) * | 1994-08-26 | 1996-03-05 | Chugai Ro Co Ltd | ダイコータ |
JP2005246194A (ja) * | 2004-03-03 | 2005-09-15 | Toyota Motor Corp | 両面塗布装置 |
JP2011143388A (ja) | 2010-01-18 | 2011-07-28 | Clean Technology Kk | 薄膜塗工装置並びに両面薄膜塗工装置 |
JP2014079708A (ja) * | 2012-10-17 | 2014-05-08 | Tokyo Ohka Kogyo Co Ltd | 両面塗布装置 |
JP2019130491A (ja) * | 2018-02-01 | 2019-08-08 | パナソニックIpマネジメント株式会社 | 塗工方法および塗工装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP4282540A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115183562A (zh) * | 2022-08-25 | 2022-10-14 | 安徽省金正塑业有限公司 | 一种用于pvc片材加工的恒温烘干设备 |
CN115183562B (zh) * | 2022-08-25 | 2023-06-23 | 安徽省金正塑业有限公司 | 一种用于pvc片材加工的恒温烘干设备 |
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