KR102034460B1 - Coating apparatus - Google Patents

Coating apparatus Download PDF

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Publication number
KR102034460B1
KR102034460B1 KR1020150173275A KR20150173275A KR102034460B1 KR 102034460 B1 KR102034460 B1 KR 102034460B1 KR 1020150173275 A KR1020150173275 A KR 1020150173275A KR 20150173275 A KR20150173275 A KR 20150173275A KR 102034460 B1 KR102034460 B1 KR 102034460B1
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KR
South Korea
Prior art keywords
coating
coating liquid
block
width
length
Prior art date
Application number
KR1020150173275A
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Korean (ko)
Other versions
KR20170066975A (en
Inventor
이채규
정창권
박순용
이명한
Original Assignee
주식회사 엘지화학
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Publication date
Application filed by 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to KR1020150173275A priority Critical patent/KR102034460B1/en
Publication of KR20170066975A publication Critical patent/KR20170066975A/en
Application granted granted Critical
Publication of KR102034460B1 publication Critical patent/KR102034460B1/en

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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
    • 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
    • B05C5/0258—Coating heads with slot-shaped outlet flow controlled, e.g. by a valve
    • 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

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  • Coating Apparatus (AREA)

Abstract

The present invention relates to a coating apparatus, according to an aspect of the present invention, a pair of each provided on both sides of the lip portion along the coating width direction to determine the body and the coating width having a lip portion outflow of the coating liquid to the substrate side At least one block is provided, the coating device is provided to increase the flow width of the coating liquid in at least some area along the outflow direction of the coating liquid.

Description

Coating apparatus

TECHNICAL FIELD The present invention relates to a coating apparatus, and more particularly, to a lip coater.

Lip coater is a device for applying the coating liquid on the substrate. The lip coater is provided with an edge block that restricts the flow of the coating liquid by blocking both ends of the coating liquid outlet to control the coating width.

One of the problems occurring in the lip coating process is a defect in that the thickness of the edge portion (the edge portion in the coating width direction) becomes thick during coating. This may be due to surface tension, film stretching (uniaxial / biaxial stretching), die swelling, and the like. In the case where the coating width direction thickness deviation appears throughout the coating, it can be controlled by changing the shape of the manifold, but it is difficult to improve because the defective edge portion appears only at the coating edge.

If such edge defects appear, there is a problem that the substrate is likely to tear at the time of winding. In addition, since the edge portion is to be cut out when the defect is severe, the yield is reduced.

The present invention is to solve the problem to provide a coating apparatus that can reduce the coating thickness variation occurring in the edge portion (edge) during coating in the lip coater.

In order to solve the above problems, according to an aspect of the present invention, a pair of blocks respectively provided on both sides of the lip portion along the coating width direction to determine the body and the coating width having a lip portion outflow of the coating liquid to the substrate side The at least one block is provided with a coating apparatus provided to increase the flow width of the coating liquid in at least some region along the outflow direction of the coating liquid.

In addition, according to another aspect of the present invention, includes a main body having a lip portion outflow of the coating liquid to the substrate side and a pair of blocks respectively provided on both sides of the lip portion along the coating width direction to determine the coating width, The pair of blocks is arranged at a predetermined interval so that the width therebetween is equal to the coating width, and each block is provided with a coating apparatus provided such that the width between the blocks increases in at least some region along the outflow direction of the coating liquid.

As described above, the coating apparatus according to an embodiment of the present invention has the following effects.

The edge block disclosed in the present invention can significantly reduce the edge portion thickness variation when coating compared to the existing edge block, to obtain a coating quality of a uniform quality.

In addition, in the coating apparatus, the coating liquid flow rate of the edge portion is distributed in the width direction by the champer while the coating liquid passes through the edge portion of the edge block, so that the edge portion coating thickness is reduced compared with the existing one.

In addition, by adjusting the length, angle, and shape of the chamfer according to the process conditions and physical properties, it is possible to improve the flow rate deviation to 1% level.

1 is a schematic view for explaining an operating state of a coating apparatus according to an embodiment of the present invention.
2 is a schematic view of the coating apparatus shown in FIG. 1.
Figure 3 is a schematic diagram showing the main configuration of the main body along the outflow direction of the coating liquid.
4 is a perspective view of a block constituting a coating apparatus according to an embodiment of the present invention.
5 is a plan view of the block shown in FIG. 4.
6 is a conceptual diagram illustrating a coating process using the block illustrated in FIG. 5.
7 and 8 are simulation results for checking the coating quality of the edge portion when using the block shown in FIG.
FIG. 9 is a graph illustrating a width direction coating thickness using the block illustrated in FIG. 5.

Hereinafter, a coating apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In addition, irrespective of the reference numerals, the same or corresponding components will be given the same or similar reference numerals, and redundant description thereof will be omitted. For convenience of description, the size and shape of each component member may be exaggerated or reduced. Can be.

1 is a schematic view for explaining one operating state of the coating apparatus according to an embodiment of the present invention, Figure 2 is a schematic view of the coating apparatus shown in Figure 1, Figure 3 is the main body of the main body according to the outflow direction of the coating liquid It is a schematic diagram which shows a structure.

4 is a perspective view of a block constituting a coating apparatus according to an embodiment of the present invention, and FIG. 5 is a plan view of the block shown in FIG. 4.

In addition, FIG. 6 is a conceptual diagram illustrating a coating process using the block illustrated in FIG. 5, and FIGS. 7 and 8 are simulation results for confirming coating quality of an edge portion when using the block illustrated in FIG. 5, and FIG. 9. Is a graph showing the width direction coating thickness using the block shown in FIG.

In this document, the coating apparatus 100 may be a lip coater.

According to an aspect of the present invention, the coating apparatus 100 has a coating width direction so as to determine the main body 101 and the coating width w having the lip portion 102 from which the coating liquid S flows out to the substrate 11 side. Accordingly, a pair of blocks 200 are provided on both sides of the lip 102.

1 and 3, the main body 101 is a manifold for distributing a coating pipe S through which the coating liquid is supplied into the main body 101 and a coating liquid S supplied from the supply pipe 110 in the width direction. 120 and the reservoir 130, which is a space where the coating liquid S, which has moved from the manifold 120, dwells before being applied onto the substrate 11. The reservoir 130 connects the manifold 120 and the lip 102, and the coating liquid is stored before application. The lip 102 represents a narrow space (eg, an outlet) for guiding the coating solution S inside the reservoir 130 to the outside of the main body 101. In addition, both sides of the lip 102 may be defined by a pair of blocks 200. To this end, the pair of blocks 200 are spaced apart at predetermined intervals such that the width therebetween is equal to the coating width.

The at least one block 200 is provided such that the flow width w of the coating liquid increases in at least some regions along the outflow direction (or coating direction) of the coating liquid S. In addition, each block 200 is provided to increase the width w between the blocks in at least a portion of the coating solution along the outflow direction. In addition, the block 200 may be provided so that the width between the blocks increases linearly.

In addition, the block 200 may be provided to increase the flow width of the coating liquid by 1 to 3mm.

Referring to FIG. 4, the block 200 has a flow surface 201 through which the coating liquid flows in contact. In addition, the block 200 has a shape in which the flow surface 201 is connected in at least two different directions. In addition, the block 200 includes an edge portion 210 provided to reduce the flow area of the flow surface 201 along the flow direction of the coating liquid.

Block 200 is provided with a chamfer (champer) 200 of a predetermined angle at the end edge in the outflow direction of the coating liquid. For example, the angle may be 45 degrees, but is not limited thereto, and the chamfer portion may be variously formed within a predetermined angle range.

Referring to FIGS. 5A and 5C, the chamfers 220 and 220 ″ may be provided so that the length in the outflow direction of the coating liquid S and the length in the coating width direction are the same. (A) shows a chamfer portion 220 having a length of 1 mm along the outflow direction of the coating liquid S, and a length of 1 mm in the coating width direction, as shown in Fig. 5 (c) in the outflow direction of the coating liquid S; A chamfer portion 220 ″ having a length of 3 mm and a length of 3 mm in the coating width direction is shown.

Referring to FIG. 5B, the chamfer 220 'may have a length different from a length in a coating width direction and a length corresponding to an outflow direction of the coating liquid. For example, the chamfer portion 220 ′ may have a length in the outflow direction of the coating liquid smaller than the length in the coating width direction. FIG. 5B illustrates a chamfer portion 220 'having a length of 3 mm in the outflow direction of the coating liquid S and a length of 1 mm in the coating width direction.

FIG. 6A is a schematic diagram illustrating a coating process using a block having a conventional shape without a chamfer portion, and a simulation result thereof is shown in FIG. 7, and corresponds to the graph A of FIG. 9. Referring to FIGS. 7 and 9, when using a conventional block having no chamfer portion, it can be seen that edge failure occurs.

FIG. 6B is a schematic diagram illustrating a coating process using the block illustrated in FIG. 5A, and a simulation result thereof is illustrated in FIG. 8A, and corresponds to the B graph of FIG. 9. In addition, Figure 6 (c) is a schematic diagram showing the coating process using the block shown in (b) of Figure 5, the simulation results thereof are shown in Figure 8 (b), corresponding to the C graph of Figure 9 . 6D is a schematic diagram showing a coating process using the block shown in FIG. 5C, and the simulation result thereof is shown in FIG. 8C, and corresponds to the D graph of FIG. 9. .

Referring to Figure 9, it can be seen that the coating thickness variation of the edge region is improved through the chamfer (220, 220 ', 220 "). Meanwhile, the horizontal axis of Figure 9 represents the length along the coating width direction, Only one side direction of the center (0) is shown, and the vertical axis of FIG. 9 represents the coating thickness.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art having various ordinary knowledge of the present invention will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. And additions should be considered to be within the scope of the following claims.

10: roll
11: Substrate
100: coating device
101: main body
110: supply pipe
120: manifold
130: reservoir
102: lip
200: block

Claims (15)

A main body having a lip portion through which the coating liquid flows out to the substrate side; And
A pair of blocks each provided on both sides of the lip along the coating width direction to determine the coating width,
At least one block is provided to increase the flow width of the coating liquid in at least some region along the outflow direction of the coating liquid,
The block has a flow surface in which the coating liquid flows in contact,
The block is provided to reduce the flow area of the flow surface along the flow direction of the coating liquid,
The coating device of the block is provided with a chamfer (champer) of a predetermined angle at the end edge along the outflow direction of the coating liquid. The method of claim 1,
The block is provided with a coating apparatus provided to increase the flow width of the coating liquid by 1 to 3mm. The method of claim 1,
Coating apparatus having a shape in which the fluid surface is connected in at least two different directions. The method of claim 1,
And the angle is 45 degrees. The method of claim 1,
The chamfering unit is provided with a length in the coating width direction and the length along the outflow direction of the coating liquid. The method of claim 1,
The chamfering unit is provided with a different length in the coating width direction and length in the outflow direction of the coating liquid. The method of claim 6,
And the chamfer portion has a length along the outflow direction of the coating liquid smaller than a length in the coating width direction. The method of claim 1, wherein the main body,
Supply pipe to which the coating liquid is supplied;
A manifold for distributing the coating liquid supplied from the supply pipe in the coating width direction; And
Coating device comprising a reservoir for connecting the manifold and the lip, the coating liquid is stored. A main body having a lip portion through which the coating liquid flows out to the substrate side; And
A pair of blocks each provided on both sides of the lip along the coating width direction to determine the coating width,
The pair of blocks are spaced apart at predetermined intervals so that the width between them is equal to the coating width,
Each block is provided so as to increase the width between the blocks in at least some area along the outflow direction of the coating liquid,
The block has a flow surface in which the coating liquid flows in contact,
The block is provided to reduce the flow area of the flow surface along the flow direction of the coating liquid,
The coating device is provided with a chamfer (champer) of a predetermined angle at the end edge in the block along the outflow direction of the coating liquid. The method of claim 9,
The block is provided with a coating device such that the width between the blocks increases linearly. delete The method of claim 9,
And the angle is 45 degrees. The method of claim 9,
The chamfering unit is provided with a length in the coating width direction and the length along the outflow direction of the coating liquid. The method of claim 9,
The chamfering unit is provided with a different length in the coating width direction and length in the outflow direction of the coating liquid. The method of claim 14,
And the chamfer portion has a length along the outflow direction of the coating liquid smaller than a length in the coating width direction.
KR1020150173275A 2015-12-07 2015-12-07 Coating apparatus KR102034460B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150173275A KR102034460B1 (en) 2015-12-07 2015-12-07 Coating apparatus

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Application Number Priority Date Filing Date Title
KR1020150173275A KR102034460B1 (en) 2015-12-07 2015-12-07 Coating apparatus

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KR20170066975A KR20170066975A (en) 2017-06-15
KR102034460B1 true KR102034460B1 (en) 2019-10-21

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4240641B2 (en) * 1999-03-05 2009-03-18 東レ株式会社 Plasma display manufacturing method and paste coating apparatus
KR101175029B1 (en) 2010-12-29 2012-08-17 삼성에스디아이 주식회사 Device for applying slurry and method for manufacturing the same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101125649B1 (en) * 2010-05-24 2012-03-27 삼성에스디아이 주식회사 Active material coating apparatus and coating method using the same
KR101750326B1 (en) * 2012-12-07 2017-06-23 주식회사 엘지화학 Improved slot die for chamber structure and coating apparatus having the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4240641B2 (en) * 1999-03-05 2009-03-18 東レ株式会社 Plasma display manufacturing method and paste coating apparatus
KR101175029B1 (en) 2010-12-29 2012-08-17 삼성에스디아이 주식회사 Device for applying slurry and method for manufacturing the same

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