WO1998032890A1 - Coating thickness control - Google Patents
Coating thickness control Download PDFInfo
- Publication number
- WO1998032890A1 WO1998032890A1 PCT/AU1998/000030 AU9800030W WO9832890A1 WO 1998032890 A1 WO1998032890 A1 WO 1998032890A1 AU 9800030 W AU9800030 W AU 9800030W WO 9832890 A1 WO9832890 A1 WO 9832890A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mouth
- air knife
- lips
- facing
- relative
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/20—Strips; Plates
-
- 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
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/06—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with a blast of gas or vapour
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
- D21H25/16—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with a blast of vapour or gas, e.g. air knife
Definitions
- This invention relates to the control of thickness of a coating applied to the
- the present invention has been particularly developed for controlling the
- the hot dip galvanising process aims to apply a controlled amount of a protective
- galvanising line is employed to coat the sheet.
- the galvanising line 1 includes input coils 2 which carry a
- the metal sheet 3 is fed into an accumulator 4 and then passed
- X-ray gauges 47 are located down the line beyond the air knives 15 to monitor the
- the coat thickness is above the minimum required for the product in question.
- the coating thickness is controlled by the application of a high pressure wiping
- a typical air knife 15 is depicted schematically in
- the distance from the air knife mouth to the sheet surface is controlled by
- a bowed sheet profile can occur as the sheet exits the molten zinc bath
- proximal sheet surface 32 This has the effect of introducing a variation in the thickness
- Fig 3b illustrates a typical coating profile on the upper or
- Fig. 3c illustrates a typical coating profile on the lower or
- the width of the mouth opening varies at different points along its length. Constricting the width of the mouth reduces the gas flow at that point thus reducing the wiping effect
- US-4524716 discloses an air knife in which movable obstructions are provided
- gases gases, or even liquids, may be used and are encompassed by the invention.
- an air knife assembly including:
- moving means operable to move the lips relative to the air knife body.
- the present invention also provides an air knife mouth arrangement for use in an
- pressurised fluid passes to operate on a coating applied to a surface of a sheet material
- the air knife mouth arrangement including a pair of facing lips defining the
- the facing lips adapted to be movable relative to the air knife body.
- the lips is varied along at least part of the length of the mouth
- the present invention also preferably provides an air knife mouth arrangement
- pressurised fluid passes to operate on a coating applied to a surface of a sheet material
- the air knife mouth arrangement including a mouth defined by a pair of facing
- said facing lips configured and adapted to co-operate with each other such that upon
- mouth of the air knife can be employed to break free, and hence remove, small lumps of
- each lip of the pair of facing lips has, in front elevation, a curved
- each lip is provided along substantially the entire
- each lip is defined by a mathematical function which,
- each lip, in front elevation is defined by an odd
- each lip has an identical shape to the other lip, although for some reasons
- an initial non-uniform mouth width along its length may be required.
- the moving means of the air knife assembly is operable to move both
- the moving means is operative in response to signals from control
- control means including sensing means located past the air knife and
- this form of the present invention can be utilised to control the
- Fig. 1 is a diagrammatic view of a typical hot dip galvanising line for coating
- Fig. 2 is a schematic perspective view of a conventional air knife
- Fig. 3a is a horizontal sectional view of a pair of air knives operating on a bowed
- Figs. 3b & 3c illustrate a typical profile of the coating thickness resulting from
- Fig. 4 is a schematic perspective view of one preferred embodiment of an air
- Fig. 5 graphically depicts the mouth shape and mouth width variation of a
- Fig. 6 graphically depicts the mouth shape and mouth width variation of a
- Fig. 7 graphically depicts the mouth shape and mouth width variation of a
- FIG. 8a to 8c schematically depict plan views of a further preferred embodiment
- Fig. 9 schematically depicts a further preferred embodiment of air knife
- the present invention relates to an air knife mouth
- arrangement 20 comprises a mouth 16 defined by a pair of facing lips 17, 18, each lip
- lips 17, 18 face each other.
- the lips 17, 18 of the air knife mouth arrangement are
- the present invention also provides an air knife assembly 15, the assembly
- Means 12 are provided for distributing a fluid under pressure through the
- the moving means passing the air knife to thereby control the thickness of the coating.
- each lip 17, 18 is
- the mathematical function defining the shape or profile of the lips 17, 18 may be
- x lateral (transverse) coordinate, with origin as shown in Fig. 4
- A,B,C,D tuning constants chosen appropriately to achieve desired gap
- each air knife by lateral or sideways displacement of the respective facing lips.
- Fig. 4 and Fig. 6 will narrow the width of the mouth midway along the length of the
- the amplitude of the variation in width of the mouth will vary dependent on the
- the moving means 41 for displacing the lips laterally can be any suitable means.
- a mechanical arrangement such as gears may be used.
- a mechanical arrangement such as gears may be used.
- a mechanical arrangement such as gears may be used.
- a mechanical arrangement such as gears may be used.
- a mechanical arrangement such as gears may be used.
- a mechanical arrangement such as gears
- Fig. 4 is operative to simultaneously move both lips in opposite lateral directions.
- the moving means comprises racks 42, 43 connected to the
- the moving means 41 may be
- control means 46 including
- sensing means 47 located past the air knife and operative to sense the coating thickness
- air knife assembly enable the selective control of the width of the mouth at different
- the mouth arrangement can be relatively simple in construction
- mouth arrangement may be capable of being retro fitted to existing air knives so that the
- invention provides for the adjustment of the mean distance between the mouth of the air
- the air knife 15 is schematically depicted in plan view.
- FIG 8a depicts the air knife 15 with the lips of the air knife mouth 20 in a
- the moving means 86 can by utilised to move one end of the mouth forward and the
- a wedge member 92 may be located to act upon either or both of the lip
- the air knife supporting structure can be used to position the air
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9916682A GB2336377B (en) | 1997-01-22 | 1998-01-22 | Coating thickness control |
JP53142198A JP4020217B2 (en) | 1997-01-22 | 1998-01-22 | Coating thickness control |
US09/341,818 US6199301B1 (en) | 1997-01-22 | 1998-01-22 | Coating thickness control |
DE19881989T DE19881989B4 (en) | 1997-01-22 | 1998-01-22 | An air knife orifice assembly for operation in an air knife assembly and air knife assembly |
AU56476/98A AU721545B2 (en) | 1997-01-22 | 1998-01-22 | Coating thickness control |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPO4732A AUPO473297A0 (en) | 1997-01-22 | 1997-01-22 | Coating thickness control |
AUPO4732 | 1997-01-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998032890A1 true WO1998032890A1 (en) | 1998-07-30 |
Family
ID=3799036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU1998/000030 WO1998032890A1 (en) | 1997-01-22 | 1998-01-22 | Coating thickness control |
Country Status (6)
Country | Link |
---|---|
US (1) | US6199301B1 (en) |
JP (1) | JP4020217B2 (en) |
AU (1) | AUPO473297A0 (en) |
DE (1) | DE19881989B4 (en) |
GB (1) | GB2336377B (en) |
WO (1) | WO1998032890A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2140944A1 (en) * | 2008-07-03 | 2010-01-06 | Linde AG | Adjustable baffles for gas wiping |
Families Citing this family (37)
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US6749391B2 (en) | 1996-07-15 | 2004-06-15 | Semitool, Inc. | Microelectronic workpiece transfer devices and methods of using such devices in the processing of microelectronic workpieces |
US6749390B2 (en) | 1997-12-15 | 2004-06-15 | Semitool, Inc. | Integrated tools with transfer devices for handling microelectronic workpieces |
US6752584B2 (en) * | 1996-07-15 | 2004-06-22 | Semitool, Inc. | Transfer devices for handling microelectronic workpieces within an environment of a processing machine and methods of manufacturing and using such devices in the processing of microelectronic workpieces |
US6921467B2 (en) * | 1996-07-15 | 2005-07-26 | Semitool, Inc. | Processing tools, components of processing tools, and method of making and using same for electrochemical processing of microelectronic workpieces |
TWI223678B (en) * | 1998-03-20 | 2004-11-11 | Semitool Inc | Process for applying a metal structure to a workpiece, the treated workpiece and a solution for electroplating copper |
US6565729B2 (en) | 1998-03-20 | 2003-05-20 | Semitool, Inc. | Method for electrochemically depositing metal on a semiconductor workpiece |
US6497801B1 (en) * | 1998-07-10 | 2002-12-24 | Semitool Inc | Electroplating apparatus with segmented anode array |
US20030038035A1 (en) * | 2001-05-30 | 2003-02-27 | Wilson Gregory J. | Methods and systems for controlling current in electrochemical processing of microelectronic workpieces |
EP1192298A4 (en) * | 1999-04-13 | 2006-08-23 | Semitool Inc | System for electrochemically processing a workpiece |
US7585398B2 (en) * | 1999-04-13 | 2009-09-08 | Semitool, Inc. | Chambers, systems, and methods for electrochemically processing microfeature workpieces |
US7189318B2 (en) * | 1999-04-13 | 2007-03-13 | Semitool, Inc. | Tuning electrodes used in a reactor for electrochemically processing a microelectronic workpiece |
US6368475B1 (en) * | 2000-03-21 | 2002-04-09 | Semitool, Inc. | Apparatus for electrochemically processing a microelectronic workpiece |
US6916412B2 (en) * | 1999-04-13 | 2005-07-12 | Semitool, Inc. | Adaptable electrochemical processing chamber |
US7160421B2 (en) * | 1999-04-13 | 2007-01-09 | Semitool, Inc. | Turning electrodes used in a reactor for electrochemically processing a microelectronic workpiece |
US7020537B2 (en) * | 1999-04-13 | 2006-03-28 | Semitool, Inc. | Tuning electrodes used in a reactor for electrochemically processing a microelectronic workpiece |
US6623609B2 (en) | 1999-07-12 | 2003-09-23 | Semitool, Inc. | Lift and rotate assembly for use in a workpiece processing station and a method of attaching the same |
WO2001090434A2 (en) * | 2000-05-24 | 2001-11-29 | Semitool, Inc. | Tuning electrodes used in a reactor for electrochemically processing a microelectronic workpiece |
AU2001282879A1 (en) * | 2000-07-08 | 2002-01-21 | Semitool, Inc. | Methods and apparatus for processing microelectronic workpieces using metrology |
KR20030018175A (en) * | 2001-08-27 | 2003-03-06 | 주식회사 포스코 | An apparatus for measuring a gap of air-knife nozzle with strip |
US6630360B2 (en) | 2002-01-10 | 2003-10-07 | Advanced Micro Devices, Inc. | Advanced process control (APC) of copper thickness for chemical mechanical planarization (CMP) optimization |
US20030159921A1 (en) * | 2002-02-22 | 2003-08-28 | Randy Harris | Apparatus with processing stations for manually and automatically processing microelectronic workpieces |
US6991710B2 (en) * | 2002-02-22 | 2006-01-31 | Semitool, Inc. | Apparatus for manually and automatically processing microelectronic workpieces |
US6893505B2 (en) * | 2002-05-08 | 2005-05-17 | Semitool, Inc. | Apparatus and method for regulating fluid flows, such as flows of electrochemical processing fluids |
US20040031167A1 (en) * | 2002-06-13 | 2004-02-19 | Stein Nathan D. | Single wafer method and apparatus for drying semiconductor substrates using an inert gas air-knife |
US7114903B2 (en) * | 2002-07-16 | 2006-10-03 | Semitool, Inc. | Apparatuses and method for transferring and/or pre-processing microelectronic workpieces |
KR20040048263A (en) * | 2002-12-02 | 2004-06-07 | 주식회사 포스코 | Air knife with a function of controling air ventilation mass in the direction of width |
US20050092611A1 (en) * | 2003-11-03 | 2005-05-05 | Semitool, Inc. | Bath and method for high rate copper deposition |
KR100903180B1 (en) * | 2006-05-22 | 2009-06-17 | 주식회사 엘지화학 | Method of Controlling Coating-Quantity of Separator for Lithium-ion Polymer Battery |
WO2007142396A1 (en) * | 2006-06-05 | 2007-12-13 | Posco | Gas wiping apparatus |
CN1928147B (en) * | 2006-09-12 | 2012-09-19 | 攀钢集团攀枝花钢铁研究院 | Air knife for controlling zinc coat thickness |
DE102008058513B4 (en) * | 2008-11-21 | 2011-03-10 | Berger, Bernd, Dr.-Ing. | Device for removing liquid from the surface of a moving belt and belt processing plant with such a device |
JP5602371B2 (en) * | 2009-03-06 | 2014-10-08 | 三菱日立製鉄機械株式会社 | Gas wiping device |
DE102010008989B4 (en) | 2009-03-06 | 2018-07-26 | Primetals Technologies Japan, Ltd. | The gas wiping |
KR101125649B1 (en) * | 2010-05-24 | 2012-03-27 | 삼성에스디아이 주식회사 | Active material coating apparatus and coating method using the same |
JP5857577B2 (en) * | 2011-09-22 | 2016-02-10 | 日本電気株式会社 | Coating die head |
CN103510032B (en) * | 2012-06-20 | 2015-12-02 | 鞍钢股份有限公司 | The deviate control method of cold rolling hot dip galvanizing plating uniformity |
KR102362174B1 (en) | 2018-10-01 | 2022-02-10 | 주식회사 엘지에너지솔루션 | Slot die coater adjusting device for adjusting the distance between the upper discharge port and the lower discharge port of the slot die coater and Electrode active material coating system comprising the same |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2568492A (en) * | 1949-04-16 | 1951-09-18 | Gen Aniline & Film Corp | Adjustable nozzle |
US3272176A (en) * | 1964-04-13 | 1966-09-13 | Du Pont | Air knife |
US4106429A (en) * | 1977-05-23 | 1978-08-15 | Beloit Corporation | Air knife with adjustable lip |
GB2019916A (en) * | 1978-04-26 | 1979-11-07 | Albany Int Corp | Air or other fluid knife |
EP0249234A1 (en) * | 1986-06-12 | 1987-12-16 | DUMA Konstruktionsbüro | Blow-off device for the continuous two-sided coating of strip metal |
DE4024229C1 (en) * | 1990-07-31 | 1991-07-18 | Heinrich 4100 Duisburg De Pannenbecker | |
GB2254808A (en) * | 1991-04-03 | 1992-10-21 | Air Control Installations | "air knife" |
AU3700593A (en) * | 1992-04-17 | 1993-10-21 | Clecim | Air knife device for regulating a metal deposit |
Family Cites Families (9)
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BE758803A (en) * | 1969-11-12 | 1971-04-16 | Jones & Laughlin Steel Corp | METHOD FOR CHECKING THE COATING OF A SUBSTRATE |
FR2090313B1 (en) * | 1970-05-27 | 1974-04-26 | Italsider Spa | |
US4041895A (en) * | 1975-09-29 | 1977-08-16 | Republic Steel Corporation | Coating thickness and distribution control |
DD152143A1 (en) * | 1980-07-22 | 1981-11-18 | Lothar Werk | DEVICE FOR GENERATING THICKNESS METAL LAYERS ON A REINFORCED RIBBON STEEL |
US4359964A (en) * | 1981-05-20 | 1982-11-23 | Beloit Corporation | Air knife coater with pivoted lip |
US4697542A (en) * | 1985-05-13 | 1987-10-06 | The Kohler Coating Machinery Corporation | Adjustable nozzle for coating equipment |
US5221345A (en) * | 1990-10-12 | 1993-06-22 | National Galvanizing Inc. | Method and apparatus for coating a strip |
ATE197822T1 (en) * | 1994-07-14 | 2000-12-15 | Fontaine Eng & Maschinen Gmbh | DEVICE AND METHOD FOR CONTROLLING THE COATING WEIGHT OF A METAL COATING USING BLOW NOZZLES |
FR2726288B1 (en) * | 1994-10-27 | 1997-01-17 | Clecim Sa | AIR BLADE DEVICE FOR ADJUSTING THE THICKNESS OF A DEPOSIT |
-
1997
- 1997-01-22 AU AUPO4732A patent/AUPO473297A0/en not_active Abandoned
-
1998
- 1998-01-22 DE DE19881989T patent/DE19881989B4/en not_active Expired - Fee Related
- 1998-01-22 GB GB9916682A patent/GB2336377B/en not_active Expired - Fee Related
- 1998-01-22 US US09/341,818 patent/US6199301B1/en not_active Expired - Lifetime
- 1998-01-22 JP JP53142198A patent/JP4020217B2/en not_active Expired - Fee Related
- 1998-01-22 WO PCT/AU1998/000030 patent/WO1998032890A1/en active IP Right Grant
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2568492A (en) * | 1949-04-16 | 1951-09-18 | Gen Aniline & Film Corp | Adjustable nozzle |
US3272176A (en) * | 1964-04-13 | 1966-09-13 | Du Pont | Air knife |
US4106429A (en) * | 1977-05-23 | 1978-08-15 | Beloit Corporation | Air knife with adjustable lip |
GB2019916A (en) * | 1978-04-26 | 1979-11-07 | Albany Int Corp | Air or other fluid knife |
EP0249234A1 (en) * | 1986-06-12 | 1987-12-16 | DUMA Konstruktionsbüro | Blow-off device for the continuous two-sided coating of strip metal |
DE4024229C1 (en) * | 1990-07-31 | 1991-07-18 | Heinrich 4100 Duisburg De Pannenbecker | |
GB2254808A (en) * | 1991-04-03 | 1992-10-21 | Air Control Installations | "air knife" |
AU3700593A (en) * | 1992-04-17 | 1993-10-21 | Clecim | Air knife device for regulating a metal deposit |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2140944A1 (en) * | 2008-07-03 | 2010-01-06 | Linde AG | Adjustable baffles for gas wiping |
Also Published As
Publication number | Publication date |
---|---|
AUPO473297A0 (en) | 1997-02-20 |
JP2001508358A (en) | 2001-06-26 |
GB2336377A (en) | 1999-10-20 |
US6199301B1 (en) | 2001-03-13 |
GB2336377B (en) | 2001-07-25 |
JP4020217B2 (en) | 2007-12-12 |
DE19881989B4 (en) | 2009-05-14 |
DE19881989T1 (en) | 2000-02-10 |
GB9916682D0 (en) | 1999-09-15 |
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