EP2564939A1 - Beschichtungsvorrichtung und Beschichtungsverfahren - Google Patents

Beschichtungsvorrichtung und Beschichtungsverfahren Download PDF

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Publication number
EP2564939A1
EP2564939A1 EP12181701A EP12181701A EP2564939A1 EP 2564939 A1 EP2564939 A1 EP 2564939A1 EP 12181701 A EP12181701 A EP 12181701A EP 12181701 A EP12181701 A EP 12181701A EP 2564939 A1 EP2564939 A1 EP 2564939A1
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EP
European Patent Office
Prior art keywords
coating
web
upstream side
liquid
coating liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12181701A
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English (en)
French (fr)
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EP2564939B1 (de
Inventor
Atsushi Oshima
Nobuyuki Sone
Rie Koseki
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Fujifilm Corp
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Fujifilm Corp
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Publication of EP2564939A1 publication Critical patent/EP2564939A1/de
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    • 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
    • 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
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
    • 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
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
    • 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
    • B05C5/0262—Coating heads with slot-shaped outlet adjustable in width, i.e. having lips movable relative to each other in order to modify the slot width, e.g. to close it

Definitions

  • the present invention relates to a coating apparatus and a coating method, and in particular to a coating apparatus and a coating method which can perform application of coating liquid stably when the coating liquid is applied by a bar coater while a web is being conveyed.
  • a lithographic printing plate is generally manufactured by graining at least one face of a web made of pure aluminum or aluminum alloy, forming an anode oxide film on the at least one face, as necessary, to form a support web, then applying image recording layer coating liquid to the grained face, drying the same to form an image recording layer, and forming an overcoat layer on the image recording layer if necessary.
  • a bar coater As such a coating apparatus for applying coating liquid, a bar coater is generally used.
  • the bar coater includes a bar which contacts with a lower face of a continuously-running web and rotates.
  • the bar coater forms a coating liquid reservoir portion by discharging coating liquid on an upstream side of the bar in a running direction of the web and applies the coating liquid on the lower face of the web.
  • a gas-liquid-solid interfaces exists at a weir (coating liquid reservoir portion) positioned on an upstream side of the bar.
  • a weir coating liquid reservoir portion
  • the drying affects bead formation and a streak failure is caused or a foreign material adhesion where a solidified material adheres to a coated surface is caused.
  • Such a phenomenon easily occurs especially when the coating liquid has a high liquid viscosity (3mPa ⁇ s or more) and a high surface tension (30mN/m or more).
  • Japanese Patent Application Laid-Open No. H08-266978 it is disclosed that a ceramic sintered compact such as Al 2 O 3 is used as a material for a coating apparatus, and a ceramic coat layer having a center-line mean roughness Ra of 0.01 ⁇ m to 1.00 ⁇ m is provided on a liquid-contacting surface of the ceramic sintered compact so that the coating liquid is well prevented from soaking.
  • a ceramic sintered compact such as Al 2 O 3
  • a ceramic coat layer having a center-line mean roughness Ra of 0.01 ⁇ m to 1.00 ⁇ m is provided on a liquid-contacting surface of the ceramic sintered compact so that the coating liquid is well prevented from soaking.
  • H10-235256 it is disclosed that in a coating apparatus for a magnetic recording medium which applies a coating material on a band-like film while contacting with an outer face of a coating material outlet in a sliding manner, the outer face of the coating material outlet is coated with a diamond-like carbon (DLC) so as to prevent powder dropping.
  • DLC diamond-like carbon
  • corrosion resistance is improved by coating a portion at which a coater dice contacts with a web and/or coating liquid with a film having a film hardness (Vickers hardness) of HV 1700 or more.
  • the present invention has been made, and an object thereof is to provide a coating apparatus and a coating method where, when a coating liquid is applied to a web while running in a bar coater, the solidification of the coating liquid can be prevented in a gas-liquid-solid interface of a weir positioned on an upstream side of a bar (coating liquid reservoir portion) so as not to cause a streak failure or a foreign material adhesion which is a failure caused by adhesion of the solidified material to a coated surface.
  • a coating apparatus including: at least a bar which contacts with a lower face of a web running continuously; a coating liquid supplying passage which supplies coating liquid on an upstream side of the bar to form a liquid reservoir portion; and an upstream side block which, on an upstream side of the liquid reservoir portion, forms another liquid reservoir portion of the coating liquid, wherein a tip end of the upstream side block is formed in an acute angle, a material of a surface of the tip end is subjected to treatment for any one of DLC, CrN, hard Cr, and TiAlN, and a surface roughness Ra of the tip end is in a range of 1.3 to 5.0 ⁇ m.
  • the coating liquid reservoir portion In the gas-liquid-solid interface of the weir positioned on the upstream side of the bar (the coating liquid reservoir portion), there is such a problem that the coating liquid becomes solidified to cause a streak failure or result in occurrence of a foreign material adhesion where a solidified material adheres to a coated surface, but, since the tip end of the upstream side block is formed in an acute angle, the surface material of the upstream side block positioned at the tip end is subjected to a treatment for any one of DLC, CrN, hard Cr, and TiAlN, and the surface roughness Ra of the tip end of the upstream side block is set in a range of 1.3 to 5.0 ⁇ m in the present invention, wettability of the coating liquid to a material of the tip end of the upstream side block is improved so that such a phenomenon can be prevented that the coating liquid becomes solidified to cause a streak failure or result in a foreign material adhesion where a solidified material adheres to a coated surface.
  • a contacting angle of a surface of the material of the upstream side block at the tip end in a range from a moment when the liquid contacts with the surface of the tip and to 200 ms after the moment can be set to 65° or less, so that wettablity of the surface is improved.
  • the surface roughness Ra of the tip end of the upstream side block is less than 1.3 ⁇ m or more than 5.0 ⁇ m, drying of the coating liquid occurs at the tip end of the upstream side block, so that a streak failure is easily caused.
  • DLC, CrN, hard Cr, or TiAlN is preferred in coating liquid containing water as a main solvent
  • CrN, hard Cr, or TiAlN is preferred in liquid containing an organic solvent, for example, alcohol or ketones, as a main solvent.
  • the main solvent means a solvent which occupies 60% or more in all the solvents of the coating liquid.
  • an upper end of the bar is disposed at a position higher than that of the tip end of the upstream side block.
  • a clearance between the tip end of the upstream side block and the web is in a range of 0.2 mm to 1 mm.
  • the clearance between the tip end of the upstream side block and the web By setting the clearance between the tip end of the upstream side block and the web to 0.2 mm or more to apply the coating liquid, it becomes hard to occur drying of the coating liquid at the tip end of the upstream side block so that it becomes hard to cause a streak failure.
  • the present invention provides a coating method which applies coating liquid using the above-described coating apparatus.
  • an coated film which includes neither a streak failure nor a foreign material adhesion can be provided by applying coating liquid using the coating apparatus of the present invention.
  • the coating liquid is applied to the web in a liquid-feeding amount per unit width of the web of 3 L/m ⁇ min. or more.
  • the liquid-feeding amount of the coating liquid By setting the liquid-feeding amount of the coating liquid to 3L/m ⁇ min. or more, drying of the coating liquid hardly occurs at the tip end of the upstream side block, so that it becomes hard to cause a streak failure.
  • a liquid viscosity of the coating liquid is 3 mPa ⁇ s or more.
  • a surface tension of the coating liquid is 30 mN/m or more.
  • the application of the coating apparatus and the coating method according to the present invention is not limited to manufacturing of a lithographic printing plate, and the coating apparatus and the coating method according to the present invention can be used when application is performed using a bar in manufacture of a photosensitive material such as a photographic film, manufacture of a magnetic recording material such as a recording tape, manufacture of painted metal thin plate such as a colored iron plate, or the like.
  • flexible base materials which is formed in a continuous band shape and made of metal, plastic, paper, or the like, such as a lithographic printing plate precursor web obtained by forming a photosensitive or thermosensitive plate-making face on a grained face of a support web, a base material for a photographic film, a baryta paper for a developing paper, a base material for a recording tape, a base material for a video tape, a base material for floppy (registered trademark) disk, or the like are involved in addition to the support web described in the Description of the Related Art.
  • the coating liquid solution which is used to be applied to a web to be dried to form a film is involved, specifically, an overcoat layer forming liquid for protecting the photosensitive layer or the thermosensitive layer after formed is involved in addition to photosensitive layer forming liquid and thermosensitive forming liquid.
  • an intermediate layer forming liquid used to form an intermediate layer on a surface of a web to improve adhesion of a plate-making layer photosensitive agent colloid liquid for a photosensitive film used to from a photosensitive layer for a photographic film, photosensitive agent colloid liquid for a developing paper used to form a photosensitive layer for a developing paper, a magnetic layer forming liquid used to form a magnetic layer for a recording tape, a video tape, or a floppy (registered trademark) disk, various paints used for painting a metal, and the like are involved as the coating liquid.
  • the coating apparatus and the coating method according to the present invention when coating liquid is applied to a web while the web is caused to run in a bar coater, the applied liquid is prevented from becoming solidified to cause a streak failure or result in occurrence of a foreign material adhesion where a solidified material adheres to a coated surface in a gas-liquid-solid interface of a weir (coating liquid reservoir portion) positioned on an upstream side of a bar.
  • Fig. 1 and Fig. 2 show a configuration of an embodiment of a coating apparatus according to the present invention.
  • Fig. 3 shows a configuration of an applying section of the coating apparatus.
  • a coating apparatus 10 of a bar-coater type is an apparatus for performing application to a lower face of a running web, and is mainly composed of a bar 12, a bar supporting member 14, an upstream side block (also called "weir plate") 16, and a base 18.
  • a web W is supported with path rollers 20 and 22, and runs in a direction of arrow "A".
  • the bar 12 is formed in a cylindrical shape and is rotatably supported by the bar supporting member 14.
  • the bar 12 is rotated about an axial line while contacting with a lower face of the running web W. It is preferred that a rotation direction of the bar 12 is a direction opposed to a running direction "A" of the web W and a peripheral velocity of the bar 12 is set within 1% of a running velocity of the web W. Incidentally, a rotation direction of the bar 12 may be the same as the running direction "A".
  • a surface of the bar 12 may be finished to be smooth, but may be provided with grooves disposed at a constant interval in a circumferential direction thereof, and it has a wire densely wound thereon.
  • a diameter of the wire wound on the bar 12 is preferably in a range of 0.07 to 1 mm, more preferably 0.07 to 0.4 mm.
  • a coating thickness of a photosensitive layer forming liquid can be made thin by making the depth of the grooves and the thickness of the wire small, while the coating thickness of the photosensitive layer forming liquid can be made thick by making the depth of the grooves and the thickness of the wire large.
  • the diameter of the bar 12 is in a range of 6 to 25 mm because of manufacture thereof and such a range is further preferred because a vertical streak hardly occurs on an coated film of the photosensitive layer forming liquid formed on the web W.
  • the bar 12 is generally longer than the width of the web W, but may have the same length as the width of the web W.
  • the web W comes in contact with the bar 12 at a predetermined wrap angle in a state where the web W has been applied with tension.
  • An entrance angle between the web W on an upstream side and a horizontal face is preferably in a range of 3° to 30 °, more preferably in a range of 5° to 10°. By setting the entrance angle in this manner, thick coating at the start time of coating and at the ending time of coating can be prevented, and wear of the bar 12 can be suppressed.
  • An angle (exit angle) between the web W on a downstream side and the horizontal face is not limited to a specific one, but the wrap angle is set such that the contact angle falls within a predetermined value.
  • the bar supporting member 14 is formed by assembling a plurality of blocks, and has an arc-shaped groove 14A on its upper face.
  • the bar 12 engages with the groove 14A and is rotatably supported therein.
  • An upstream side upper face 14B inclined with respect to a horizontal face is formed on an upstream side of the groove 14A in the running direction "A" of the web W (hereinafter, simply referred to as "upstream side").
  • a horizontal downstream side upper face 14C is formed on a downstream side of the groove 14A in the running direction "A" of the web W (hereinafter, simply referred to as "downstream side").
  • the downstream side upper face 14C is formed at a height position lower than the upstream side upper face 14B.
  • a wall face 14D of the bar supporting member 14 on the upstream side is formed vertically, and an upstream side block 16 is disposed on the upstream side to face the wall face 14D.
  • the upstream side block 16 is a plate-like member provided vertically, and a lower end thereof is fixed to the base 18. Further, as shown in Fig. 3 , an upper end (tip end) 16A of the upstream side block 16 is formed in an acute-angled wedge shape. That is, a taper face 16B for forming a wedge shape whose vertical-sectional shape gradually becomes narrower toward the tip end 16A is formed on a face of the upstream side block 16 on the upstream side in the running direction of the web W.
  • the tip end 16A of the upstream side block 16 is formed in a straight-line shape along the wide direction of the web W, and a parallel degree thereof is set in a range of 0.01 mm to 0.2 mm.
  • the parallel degree is preferably 0.01 mm or more, more preferably 0.05 mm or more.
  • the tip end 16A of the upstream side block 16 is formed in the acute-angled wedge shape and extends in a straight line along the width direction of the web W in this manner, a contact line where the web W first contacts with coating liquid is formed in a straight line along the width direction of the web W, and coating liquid passing through a clearance between the web W and the weir plate tip end 16A is pressurized (pressure is applied) in the contact line. Therefore, involved air on a surface of the web is effectively prevented from passing through the contact line to be brought into a coating liquid reservoir portion A. Thereby, even when a line velocity of the web W (a running velocity of the web) is increased for a high-speed coating, reliable coating can be performed without coating defect.
  • the angle of the tip end 16A is particularly preferably in a range of 5 to 45°.
  • machining accuracy is improved so that a high-precision block can be manufactured, and by setting the angel to 45° or less, stability of the above-described contact line is further improved.
  • a material of the surface of the tip end 16A of the upstream side block 16 is subject to a treatment for any one of DLC, CrN, hard Cr, and TiAlN, and a surface roughness Ra of the tip end 16A of the upstream side block 16 is set to fall within a range of 1.3 to 5.0 ⁇ m, so that a contact angle between a surface of the material of the tip end 16A of the upstream side block 16 and the coating liquid becomes 65° or less in a range from a moment when the coating liquid contacts to the surface of the tip end 16A of the upstream side block 16 to 200 ms after the moment.
  • an even overflow over a whole surface can be formed, and solidification of the coating liquid can be prevented so as no to cause a streak failure or a foreign material adhesion where the solidified material adheres to a coated surface.
  • the surface roughness Ra of the tip end 16A of the upstream side block 16 is in a range of 1.3 to 5.0 ⁇ m.
  • the surface roughness Ra of the tip end of the upstream side block is less than 1.3 or larger than 5.0, shortage of overflow occurs at the tip end of the upstream side block and the drying of the coating liquid occurs, which causes a streak failure easily.
  • a distance C1 from the web W to the parallel line 17 is 1 mm or less.
  • the distance C1 is not less than 0.2 mm.
  • an upper end 12A of the bar 12 is disposed at a position higher than the tip end 16A of the upstream side block 16. That is, a difference H in height between the upper end 12A of the bar 12 and the tip end 16A of the upstream side block 16 is set to be positive. In other words, it is preferred that the position of the upper end 12A of the bar 12 is higher than the position of the tip end 16A of the upstream side block 16.
  • the tip end 16A of the upstream side block 16 is disposed at a position higher than an upstream side upper end 14E of an upstream side upper face 14B of the bar supporting member 14.
  • the tip end 16A of the upstream side block 16 is disposed at a position closer to the web W than the upstream side upper face 14B of the bar supporting member 14.
  • the upstream side block 16 is provided to be parallel to the wall face 14D of the bar supporting member 14 so as to have a predetermined clearance between the upstream side block 16 and the wall face 14D, so that a slit-like supply flow passage 24 is formed between the upstream side block 16 and the wall face 14D.
  • the supply flow passage 24 is narrow in view of such a point that a discharge pressure can be elevated without changing a supply amount of coating liquid (image recording layer coating liquid, overcoat layer coating liquid or the like), and it is preferred that the coating liquid is supplied such that a liquid-feeding amount per unit width of a web is 3L/m ⁇ min or more.
  • the supply flow passage 24 is in communication with a temporary resevoir chamber 26 provided within the base 18.
  • the temporary reservoir chamber 26 is connected to a discharge side of a pump P which supplies the coating liquid from a reservoir tank (not shown) for coating liquid, and coating liquid is supplied to the temporary reservoir chamber 26 by driving the pump P.
  • the temporary reservoir chamber 26 temporarily reserves coating liquid supplied and has a function of suppressing fluctuation of a flow rate of the coating liquid supplied from the supply flow passage 24 when a discharge rate of the pump P fluctuates.
  • the coating liquid supplied to the temporary reservoir chamber 26 flows from a lower end of the supply flow passage 24 to an upper end thereof to be discharged from an outlet at the upper end toward a lower face of the web W.
  • the coating liquid reservoir portion A is formed in a space enclosed by the lower face of the web W, the upstream side upper face 14B of the bar supporting member 14, the bar 12 and the upstream side block 16.
  • the coating liquid in the coating liquid reservoir portion A is caused to adhere to the surface of the web W so that application (coating) is performed.
  • the base 18 is provided with an overflow liquid pool 28 on the upstream side of the upstream side block 16, and coating liquid which has overflowed beyond the tip end 16A of the upstream side block 16 to the upstream side can be received in the overflow liquid pool 28.
  • the base 18 is provided with an overflow liquid pool 30 on the downstream side of the bar supporting member 14, and coating liquid, which does not adhere to the web W and overflows to the downstream side, of the coating liquid in the coating liquid reservoir portion A can be received in the overflow liquid pool 30.
  • the coating liquids received in the overflow liquid pools 28 and 30 are returned to the reservoir tank (not shown) through return pipes (not shown).
  • side plates 32 and 34 are provided at both side edges of the base 18, so that side walls of the overflow liquid pools 28 and 30, the supply flow passage 24, and the temporary reservoir chamber 26 are formed.
  • the above-described base 18 is supported by an elevating device (not shown) and can be moved in a height direction (vertical direction). Therefore, the bar 12 can be advanced toward the web W (namely, upward direction) to be caused to contact with the web W and can be retracted from the web W (namely, moved downward) to be separated from the web W.
  • a running position of the web W can be changed by ascending or descending the path rollers 20 and 22 instead of movement of the base 18.
  • the coating apparatus 10 including a weir (coating liquid reservoir portion) only on the upstream side has been described, but same holds true for a coating apparatus where a weir is also provided on the downstream side in addition to the upstream side.
  • a weir is also provided on the downstream side in addition to the upstream side
  • a lithographic printing plate precursor is obtained by applying an image recording layer on an aluminum support which has been subjected to surface roughing treatment and then anode oxidation treatment.
  • An undercoat may be applied between the aluminum supporting layer and the image recording layer, or an overcoat layer may be applied to the image recording layer if needed.
  • Main solvents of coating liquids of the image recording layer and the undercoat are organic solvents, where alcohol solvent or ketone solvent is preferably used.
  • alcohol solvent methanol, ethanol, propanol, 1-methoxy-2-propanol, and the like are preferably used, while as the ketone solvent, acetone, methyl ethyl ketone, and the like are preferably used.
  • Main solvent of coating liquid of the overcoat layer is water. Examples
  • a contact angle of coating liquid at a moment of liquid adhesion was measured using a surface force apparatus DM700 (trademark) manufactured by KYOWA INTERFACE SCIENCE CO., LTD.
  • DM700 trademark
  • the contact angle of liquid at a moment when the coating liquid contacts with the tip end of the block was unstable due to vibrations of liquid droplet, so that wettability of a substrate was evaluated at a contact angle when 200 ms after the moment when the coating liquid contacts to the surface of the tip end.
  • Mica-dispersed liquid (1) was obtained by adding synthetic mica ("somasif ME-100 (trademark)" produced by Co-op Chemical Co., Ltd. and Aspect ratio: 1000 or more) of 32g in water of 368g, and dispersing the synthetic mica such that an average particle diameter (measured by a laser light scattering method) reached 0.5 ⁇ m using a homogenizer.
  • Roughness of a base plate could be measured by using a general roughness gauge, but roughness was measured by using SURFCOM 1400 (trademark) manufactured by TOKYO SEIMITSU CO., LTD in this patent application. Measurement conditions were as follows:
  • the aluminum plate was dipped in aqueous sodium hydroxide of 25 mass% at a temperature of 45°C for 9 seconds, and etching was performed. After washed with water, the aluminum plate was dipped in nitric acid of 20 mass% at a temperature of 60°C for 20 seconds and was washed with water.
  • the etching amount of the sand-grained surface at this time was about 3 g/m 2 .
  • Electrolytic solution used at this time was aqueous solution of nitric acid of 1 mass% (containing aluminum ions of 0.5 mass%) at a liquid temperature of 50°C.
  • electro-chemical surface roughing treatment was performed utilizing a carbon electrode as an opposite electrode. Ferrite was used as an auxiliary anode.
  • a current density was 30A/dm 2 at a peak value of current, and 5% of current flowing from a power source to the auxiliary anode was shunted.
  • An electric amount in nitric acid electrolysis was 175C/dm 2 which was an electric amount at an anode time of the aluminum plate.
  • the aluminum plate was washed with water by spraying.
  • an electro-chemical surface roughing treatment was performed in a method similar to the nitric acid electrolysis in electrolytic solution of aqueous solution of hydrochloric acid of 0.5 mass% (containing aluminum ions of 0.5 mass%) at a liquid temperature of 50°C under such a condition that an electric amount at an anode time of the aluminum plate was 50C/dm 2 , and thereafter, the aluminum plate was washed with water by spraying.
  • No. 3 sodium silicate aqueous solution means Di Sodium Tri Silicate aqueous solution (Na 2 O-3SiO 2 ) having mole ratio of three, which is specified by JIS K1408 (JIS: Japanese Industrial Standards).
  • the deposit amount of Si was 10 mg/m 2 .
  • a center-line mean roughness of the base plate which was measured using a needle having a diameter of 2 ⁇ m was 0.51 ⁇ m.
  • ⁇ compound for a undercoat having a structure described below (1): 0.18 g ⁇ hydroxyethyl iminodiacetic acid: 0.10 g ⁇ ethanol 55.24 g ⁇ water 6.15 g
  • coating liquid for an image recording layer having the composition described below was applied to the undercoat formed in the above manner by an application machine for an image recording layer, the coating liquid was dried by a dryer for an image recording layer. An application amount of the image recording layer was set to 1.0 g/m 2 after dried.
  • the coating liquid for an image recording layer was obtained by mixing and stirring photosensitive liquid (1) described below and micro-gel liquid (1) immediately before applied.
  • ⁇ binder polymer (1) 0.240 g ⁇ infrared absorbing dye (1) [structure described below]: 0.030 g ⁇ radical polymerization initiator (1) [structure described below]: 0.162 g ⁇ radical polymerizable compound tris(acryloyl oxyethyl)isocyanurate (NK Ester A produced by Shin-Nakamura Chemical Co., Ltd.): 0.192 g ⁇ low-molecular hydrophilic compound tris(2-hydroxyethyl)isocyanurate: 0.062 g ⁇ low-molecular hydrophilic compound (1) [structure described below]: 0.050g ⁇ polymer containing ammonium group [structure described below]: [reduction ratio viscosity: 44cSt/g/ml] 0.035 g ⁇ fluorochemical surfactant (1) [structure described below]: 0.008 g ⁇ 2-butanone: 1.091 g ⁇ 1-methoxy-2-propanol: 8.609 g
  • binder polymer (1) radical polymerization initiator (1), infrared absorbing dye (1), low-molecular hydrophilic compound (1), fluorochemical surfactant (1), and polymer containing ammonium group, and a synthesis method of the microgel (1) are as follows:
  • the oil-phase components and the water-phase component were mixed and emulsified for 10 minutes at 12,000rpm using a homogenizer. After the emulsified material obtained was added to distilled water of 25g and stirred at a room temperature for 30 minutes, the emulsified material was further stirred at a temperature of 50°C for 3 hours.
  • the microgel thus obtained was diluted using distilled water such that a concentration of a solid component of the microgel became 15 mass%, which resulted in the microgel (1). When an average particle diameter of the microgel was measured by a light scattering method, the average particle diameter was 0.2 ⁇ m.
  • overcoat layer coating liquid (1) (viscosity: 3mPa ⁇ s and surface tension: 35 mN/m) was applied to a web W applied with tension of 100 kg/m at a rate (line speed or web speed) of 50 m/min in an application amount of 10cc/m 2 while the bar 12 was rotated at a rotation speed of 5rmp in a direction opposite to the running direction "A" of the produced web W before applied using a wedge-shaped block where the angle of the upstream side block 16 was an acute angle of 30° in the bar coater 10 shown in Fig. 1 and Fig. 2 .
  • the clearance between the web and the tip end of the upstream side block was 0.2 mm and the liquid feeding amount was 3L/m ⁇ min. While the material of the upstream side block (weir) and the surface roughness were changed, dries of coating liquid at the upstream side block and coating defects were confirmed. The test result was shown in TABLE 2.
  • the viscosity and the surface tension of the coating liquid was measured by the following measuring method.
  • the viscosity was measured using B-type viscometer (TVB-10) (trademark) manufactured by TOKI SANGYO CO., LTD.
  • the surface tension was measured by using DY300 (trademark) manufactured by KYOWA INTERFACE SCIENCE CO., LTD.
  • the aluminum plate was dipped in aqueous sodium hydroxide of 25 mass% at a temperature of 45°C for 9 seconds, and etching was performed. After washed with water, the aluminum plate was dipped in nitric acid of 20 mass% at a temperature of 60°C for 20 seconds and was washed with water.
  • the etching amount of the sand-grained surface at this time was about 3 g/m 2 .
  • Electrolytic solution used at this time was aqueous solution of nitric acid of 1 mass% (containing aluminum ions of 0.5 mass%) at a liquid temperature of 50°C.
  • electro-chemical surface roughing treatment was performed utilizing a carbon electrode as an opposite electrode. Ferrite was used as an auxiliary anode.
  • a current density was 30A/dm 2 at a peak value of current, and 5% of current flowing from a power source to the auxiliary anode was shunted.
  • An electric amount in nitric acid electrolysis was 175C/dm 2 which was an electric amount at an anode time of the aluminum plate.
  • the aluminum plate was washed with water by spraying.
  • an electro-chemical surface roughing treatment was performed to the aluminum plate in a method similar to the nitric acid electrolysis in electrolytic solution of aqueous solution of hydrochloric acid of 0.5 mass% (containing aluminum ions of 0.5 mass%) at a liquid temperature of 50°C under such a condition that an electric amount at an anode time of the aluminum plate was 50C/dm 2 , and thereafter, the aluminum plate was washed with water by spraying.
  • silicate treatment was performed to the aluminum plate using sodium silicate aqueous solution No. 3 of 2.5 mass% at a temperature of 60°C for 10 seconds and thereafter the aluminum plate was washed with water to obtain a band-like support.
  • the deposit amount of Si was 10 mg/m 2 .
  • a center-line mean roughness of the base plate which was measured using a needle having a diameter of 2 ⁇ m was 0.51 ⁇ m.
  • the coating liquid described below (viscosity: 10mPa ⁇ s and surface tension: 25mN/m) was applied to the web W applied with tension of 100 kg/m in an application amount (coating amount) of 10 cc/m 2 while the bar 12 was being rotated at a speed of 5rpm in a direction opposite to the running direction "A" of the web W.
  • the clearance between the web and the tip end of the upstream side block was 0.2 mm and the liquid feeding amount was 3L/m ⁇ min. While the material of the upstream side block (weir) and the surface roughness were changed, dries of coating liquid at the upstream side block and coating defects were confirmed.
  • ⁇ binder -1 5.0g ⁇ diazo resin - 1: 2.5g ⁇ oil-soluble dye (Victoria Pure blue BOH): 0.15g ⁇ fluorochemical surfactant (Megafack F-177(trademark) produced by DIC CORPORATION)
  • ⁇ tricresyl phosphate 0.2g ⁇ phosphorous acid: 0.03g ⁇ maleic acid: 0.03g ⁇ half ester according to n-Hexyl alcoholof styrene-maleic anhydride copolymer: 0.05g
  • the diazo resin -1 is hexafluorophosphate of condensation product of p-diazodiphenylamine with paraformaldehyde, which is described in Synthesis Example - 1 in Japanese Patent Application Laid-Open No. S59-78340 .
  • the binder - 1 is water-insoluble and alkaline water-soluble film-forming polymer of 2-hydroxyethyl methacrylate/acrylonitrile/methyl methacrylate/methacrylic acid copolymer (weight ratio: 50/20/26/4, average molecular weight: 75,000, and acid content: 0.4meq/g).
  • the coating liquid is applied in such a condition that the liquid-feeding amount per unit width of web is 3L/m ⁇ min or more. Further, it is also understood that it is preferred that the coating liquid is applied in such a condition that the clearance between the tip end of the upstream side block and the web is 0.2 mm or more. When the clearance is more than 1 mm, application becomes impossible so that such a clearance cannot be adopted.

Landscapes

  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Materials For Photolithography (AREA)
EP20120181701 2011-08-26 2012-08-24 Beschichtungsvorrichtung und Beschichtungsverfahren Active EP2564939B1 (de)

Applications Claiming Priority (1)

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Publication number Priority date Publication date Assignee Title
WO2019181916A1 (ja) * 2018-03-22 2019-09-26 富士フイルム株式会社 塗布装置および塗布システム
KR102306424B1 (ko) 2019-02-13 2021-09-28 삼성에스디아이 주식회사 분리막 코팅 장치

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5978340A (ja) 1982-10-28 1984-05-07 Fuji Photo Film Co Ltd 感光性組成物
US4521459A (en) * 1982-05-19 1985-06-04 Fuji Photo Film Co., Ltd. Coating method and apparatus
JPH0615214A (ja) 1992-03-06 1994-01-25 Konica Corp 塗布装置
JPH08266978A (ja) 1995-03-31 1996-10-15 Fuji Photo Film Co Ltd 塗布装置及び塗布方法
JPH10235256A (ja) 1997-02-26 1998-09-08 Sony Corp 磁気記録媒体用塗布装置
EP1297900A2 (de) * 2001-09-28 2003-04-02 Fuji Photo Film Co., Ltd. Auftragsverfahren und -vorrichtung
JP2003236439A (ja) * 2002-02-15 2003-08-26 Fuji Photo Film Co Ltd 塗布装置および塗布方法
EP1342508A1 (de) * 2002-03-06 2003-09-10 Fuji Photo Film Co., Ltd. Vorrichtung und Verfahren zur Beschichtung
JP2003275642A (ja) * 2002-03-25 2003-09-30 Fuji Photo Film Co Ltd 塗布装置および塗布方法
EP1872860A1 (de) * 2006-06-29 2008-01-02 Fujifilm Corporation Beschichtungsvorrichtung und Beschichtungsverfahren
EP1872861A2 (de) * 2006-06-28 2008-01-02 FUJIFILM Corporation Verfahren und Vorrichtung zum Auftragen einer Beschichtungslösung mit einem Rakelstab

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000262953A (ja) * 1999-03-18 2000-09-26 Fuji Photo Film Co Ltd 塗布装置
JP2002192050A (ja) * 2000-12-26 2002-07-10 Fuji Photo Film Co Ltd 塗布装置および塗布方法
JP2003071364A (ja) * 2001-09-06 2003-03-11 Fuji Photo Film Co Ltd 計量塗布装置及び計量塗布方法

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521459A (en) * 1982-05-19 1985-06-04 Fuji Photo Film Co., Ltd. Coating method and apparatus
JPS5978340A (ja) 1982-10-28 1984-05-07 Fuji Photo Film Co Ltd 感光性組成物
JPH0615214A (ja) 1992-03-06 1994-01-25 Konica Corp 塗布装置
JPH08266978A (ja) 1995-03-31 1996-10-15 Fuji Photo Film Co Ltd 塗布装置及び塗布方法
JPH10235256A (ja) 1997-02-26 1998-09-08 Sony Corp 磁気記録媒体用塗布装置
EP1297900A2 (de) * 2001-09-28 2003-04-02 Fuji Photo Film Co., Ltd. Auftragsverfahren und -vorrichtung
JP2003236439A (ja) * 2002-02-15 2003-08-26 Fuji Photo Film Co Ltd 塗布装置および塗布方法
EP1342508A1 (de) * 2002-03-06 2003-09-10 Fuji Photo Film Co., Ltd. Vorrichtung und Verfahren zur Beschichtung
JP2003275642A (ja) * 2002-03-25 2003-09-30 Fuji Photo Film Co Ltd 塗布装置および塗布方法
EP1872861A2 (de) * 2006-06-28 2008-01-02 FUJIFILM Corporation Verfahren und Vorrichtung zum Auftragen einer Beschichtungslösung mit einem Rakelstab
EP1872860A1 (de) * 2006-06-29 2008-01-02 Fujifilm Corporation Beschichtungsvorrichtung und Beschichtungsverfahren

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JP5300101B2 (ja) 2013-09-25
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