KR20120047426A - Die coaters for forming a coating layer having uniform thickness - Google Patents

Die coaters for forming a coating layer having uniform thickness Download PDF

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Publication number
KR20120047426A
KR20120047426A KR1020100108982A KR20100108982A KR20120047426A KR 20120047426 A KR20120047426 A KR 20120047426A KR 1020100108982 A KR1020100108982 A KR 1020100108982A KR 20100108982 A KR20100108982 A KR 20100108982A KR 20120047426 A KR20120047426 A KR 20120047426A
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KR
South Korea
Prior art keywords
coating
die
die block
coating liquid
heater
Prior art date
Application number
KR1020100108982A
Other languages
Korean (ko)
Inventor
김철수
Original Assignee
김철수
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 김철수 filed Critical 김철수
Priority to KR1020100108982A priority Critical patent/KR20120047426A/en
Publication of KR20120047426A publication Critical patent/KR20120047426A/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
    • 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
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • 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
    • 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
    • B05C9/14—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 involving heating or cooling

Abstract

Die-coating machine that secures a sufficient portion of heat applied to solve thermal imbalance, eliminates thermal deformation between control pin and control pin, and forms coating layer of uniform thickness by being free from shaking without being affected by impurities. To present. The coater is installed in the first die block and the second die block, which are coupled to each other to form a gap between the flow space and the outlet, which are determined according to the type of coating liquid, respectively. It includes a temperature sensor for measuring the temperature of the coating liquid flowing, and includes a control unit for controlling the heat applied to the heater to maintain a constant at a temperature determined according to the type of coating liquid to be coated on the coating body by the die coating machine.

Description

Die coaters for forming a coating layer having uniform thickness

The present invention relates to a die coater, and more particularly, to a die coater for discharging a coating liquid under optimized conditions to form a coating layer having a uniform thickness on the coated body.

In order to form a thin film on the to-be-coated body, a method of discharging the coating liquid using a coating slot is used. Such coating can be conveniently done using a die coater having a cavity in communication with the slot. That is, the coating liquid under constant pressure and temperature is injected jointly, and then the coating film is formed on the to-be-coated body by discharging out of the coating slot.

On the other hand, the thickness of the coating is determined by adjusting the gap of the slot exit by a lip (lip) for discharging the coating liquid through the coating slot. Conventional die coaters have a double lip shape that adjusts the gap at the slot exit using bolt-like adjustment pins on both sides of the lip and a control formed on a thin and flexible neck. It uses the form of a flexible lip that uses a pin to adjust the gap at the slot exit.

By the way, both types of die coating machine requires a separate space for the operation of the adjusting pin to adjust the lip, thereby causing thermal imbalance because only about 30% of the entire die coating machine is heated by the heater. In addition, there is a problem that the thermal deformation occurs between the control pin and the adjustment pin is assembled with the body at intervals of about 50mm adjustment pins for fixing the plurality of ribs. Furthermore, impurities, in particular carbide, are accumulated between the lip and the body where the control pin is installed and added to the coating liquid, which has a fatal effect on the quality of the coating film.

The die coater of the flexible form deforms the flexible part due to heat and pressure of the coating liquid, causing deformation of the lip. In particular, the flexible portion is shaken by heat and pressure generated during the coating process, which causes a coating film having a non-uniform thickness. Even breakage of the flexible part may occur due to fatigue or external shocks, resulting in replacement of the entire die coater.

The problem to be solved by the present invention is to ensure a sufficient portion of the heat is applied to solve the thermal imbalance, to remove the thermal deformation between the control pin and the control pin, and to ensure that there is no shaking without being affected by impurities and uniform It is to provide a die coater for forming a coating layer of thickness.

The die coating machine of the present invention for solving the above problems is provided with a first die block and a second die block coupled to each other to form a gap between the flow space and the outlet determined according to the type of the coating liquid, which is divided into the body portion and the discharge portion It includes a die block. In addition, each of the first die block and the second die block, and installed in the longitudinal direction and a heater for heating the entire body portion and a temperature sensor for measuring the temperature of the coating liquid flowing through the flow space. It includes a control unit for controlling the heat applied to the heater to maintain a constant at a temperature determined according to the type of the coating liquid to be coated on the coated body by the die coater.

In the die coating machine of the present invention, the heater may be installed inside the first die block and the second die block, and may be installed on the outer walls of the first die block and the second die block. In addition, the outlet gap may be determined according to the width of the coating slot included in the flow space, the height and the inclination angle of the inclined portion formed between the outlet and the coating slot and the type of coating liquid.

The die coating machine according to the present invention has a flow space and an outlet gap determined according to the coating liquid, and controls the temperature according to the coating liquid, thereby sufficiently securing a portion to which heat is applied to solve thermal imbalance, and between the control pin and the adjusting pin. Eliminates thermal deformation, and can be formed without coating the body to be shaken without affecting the impurities to form a coating layer of uniform thickness.

1 is a cross-sectional view showing a die coating machine according to an embodiment of the present invention.
2 is a cross-sectional view showing a die coating machine according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below may be modified in various forms, and the scope of the present invention is not limited to the embodiments described below. Embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art.

Embodiment of the present invention to secure a sufficient portion of the heat is applied without using the adjusting pin for adjusting the gap of the slot exit to solve the thermal imbalance, to remove the thermal deformation between the control pin and the control pin, impurities A die coater for forming a coating layer having a uniform thickness on a coated body without being affected by and without shaking. To this end, hereinafter, a structure of a die coater capable of forming a coating layer having a uniform thickness even without adjusting pins will be described in detail.

1 is a cross-sectional view showing a die coater 100 according to an embodiment of the present invention.

Referring to FIG. 1, the first die coater 100 includes a die block 10 including a first die block 10a and a second die block 10b coupled to each other by a fastening portion 20. The fastening portion 20 preferably uses a bolt and nut structure, but is not limited within the scope of the present invention. The combined first die block 10 provides a flow space 50 consisting of the manifold cavity 50a and the coating slot 50b to secure a space in which the coating liquid flows. The flow space 50 provides a space for flowing the coating liquid for coating the coating body.

One side of the coating slot 10b forms an inclined portion 56 such that the coating liquid is discharged toward the coated body, and an end portion c has an outlet c whose gap G is determined by the lip 54. In other words, the width W of the coating slot 10b is gradually narrowed by the inclined portion 56 so that the gap of the outlet c becomes G. The gap G of the outlet c depends on the height H of the inclined portion 56 and the inclined inclination angle θ of the inclined portion 56. The gap G of the outlet c according to the sealing example of the present invention may be determined by adjusting the width W of the coating slot and the height H and the inclination angle θ of the coating slot 56 without a separate adjusting pin. .

The die block 10 is divided into a body part (a) and a discharge part (b) that incorporate the heater 40 and hold the first die coater 100. Here, the discharge portion (b) has a shape in which the outlet (c) in the body portion (a) is gradually narrowed and converged as shown. Body portion (a) includes a manifold cavity (50a) and the heater 40, the heater 40 is connected to an external power line (not shown) to heat the body portion (a). The applied heat is a high temperature of about 330 ~ 350 ℃, to increase the temperature of the body portion (a) which is a thermal conductor to control the temperature of the coating liquid flowing in the manifold cavity (50a).

The heater 40 is installed in each of the first die block 10a and the second die block 10b, and has a structure capable of heating the entire body portion a in the longitudinal direction. That is, the heater 40 extends from one side of the body portion (a) to reach the discharge portion (b) and is embedded therein. The heater 40 may have a plate shape or a cylindrical shape, and may have various shapes according to the size or material of the die coater 100. By setting the heater 40 to heat the entire body portion a, it is possible to supply sufficient heat, particularly to the manifold cavity 50a. The heater 40 is preferably covered with a cover 60 to reduce heat dissipation to the outside.

On the other hand, there are many kinds of coating liquids to be coated on the coating material, the use, the use environment, and the like of the coating material. Various conditions are required to make the coating layer applied to the coated object uniform. In the embodiment of the present invention, these various conditions are determined in advance according to the coating liquid. Hereinafter, the important ones of the conditions will be described one by one.

First, in the form of a manifold cavity 50a through which the coating liquid flows, a flow space 50 consisting of a coating slot 50b and an outlet c. The shape here is expressed dimensionally, such as the diameter of the manifold cavity 50a, the width W of the coating slot 50b, the length of the coating slot 50b, and the gap G of the outlet. The coating liquid has different physical properties depending on the type. In particular, the difference in viscosity gives a change in the fluidity of the coating liquid. The shape of the flow space 50 and the outlet (c) depends on the properties of the coating liquid as described above.

Embodiments of the present invention are in the form of flow space 50 and outlet c, such as the diameter of manifold cavity 50a, the width W of coating slot 50b, the length of coating slot 50b and the outlet of The gap G is determined in advance to produce the first die block 10a and the second die block 10b. According to the die coating machine 100 of the present invention, by determining the shape of the flow space 50 in advance, there is no need to use the control pin in the conventional compatible form or flexible form, between the control pin and the control pin Since there is no thermal deformation or shaking of the outlet c and no impurities are accumulated, a coating layer having a uniform thickness can be formed.

In addition, another condition for making the coating layer applied to the coated object uniform is the amount of heat applied to the coating liquid. In the present invention, the amount of heat is determined in advance according to the type of coating liquid. On the other hand, in order to measure the amount of heat, the die coater 100 of the present invention uses a temperature sensor 30 for measuring the temperature of the manifold cavity 50a and the coating slot 50b. In addition, the control unit 70 for controlling the amount of heat applied to the heater 40 to be kept constant at a predetermined temperature according to the coating liquid.

2 is a cross-sectional view showing a die coater 200 according to another embodiment of the present invention. Here, the die coater 200 is different from the die coater 100 of FIG. 1 and the heater 42 are installed on the outer wall of the body portion a. Accordingly, components that play the same function and role are represented by the same reference numerals. In addition, detailed descriptions of the parts related to the die block 10, the fastening part 20, and the flow space 50 will be omitted.

Referring to FIG. 2, the heaters 42 of the die coating machine 200 are respectively installed on the outer walls of the first die block 10a and the second die block 10b, and heat the entire body portion a in the longitudinal direction. It has a structure that can be done. Here, the outer wall is a portion of the body portion a that is exposed to the outside except the discharge portion b. That is, the heater 42 extends from one side of the body portion (a) to the discharge portion (b) and is mounted.

The heater 42 may have various shapes according to the size, material, shape, etc. of the die coating machine 200. By setting the heater 42 to be capable of heating the entire body portion a, sufficient heat can be supplied to the manifold cavity 50a. The heater 42 is preferably covered with a cover 60 to reduce heat dissipation to the outside.

On the other hand, there are many kinds of coating liquids to be coated on the coating material, the use, the use environment, and the like of the coating material. Various conditions are required to make the coating layer applied to the coated object uniform. In the embodiment of the present invention, these various conditions are determined in advance according to the coating liquid. Hereinafter, the important ones of the conditions will be described one by one.

First, in the form of a manifold cavity 50a through which the coating liquid flows, a flow space 50 consisting of a coating slot 50b and an outlet c. The shape here is expressed dimensionally, such as the diameter of the manifold cavity 50a, the width W of the coating slot 50b, the length of the coating slot 50b, and the gap G of the outlet. The coating liquid has different physical properties depending on the type. In particular, the difference in viscosity gives a change in the fluidity of the coating liquid. The shape of the flow space 50 and the outlet (c) is dependent on the properties of the coating liquid as described above.

Embodiments of the present invention are in the form of flow space 50 and outlet c, such as the diameter of manifold cavity 50a, the width W of coating slot 50b, the length of coating slot 50b and the outlet of The gap G is determined in advance to produce the first die block 10a and the second die block 10b. According to the die coating machine 200 of the present invention, by determining the shape of the flow space 50 and the outlet (c) in advance, there is no control pin used in the conventional compatible form or flexible form, the control pin and the adjustment Since there is no thermal deformation between the fins or shaking of the outlet c and no impurities are accumulated, a coating layer having a uniform thickness can be formed.

In addition, another condition for making the coating layer applied to the coated object uniform is the amount of heat applied to the coating liquid. In the present invention, the amount of heat is determined in advance according to the type of coating liquid. On the other hand, in order to measure the heat amount, the die coater 200 of the present invention uses a temperature sensor 32 for measuring the temperature of the manifold cavity 50a and the coating slot 50b. It also includes a control unit 72 for controlling the amount of heat applied to the heater 42 to be kept constant at a predetermined temperature in accordance with the coating liquid.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but many variations and modifications may be made without departing from the scope of the present invention. It is possible.

10; Die block 10a; First die block
10b; Second die block 20; The fastening portion
30, 32; Temperature sensors 40, 42; heater
50; Flow space 50a; Manifold joint
50b; Coated slot 54; Lip
56; Inclined portion 60; cover

Claims (4)

A die block having a first die block and a second die block coupled to each other to form a gap between the flow space and the outlet, the die block being divided into a body part and a discharge part;
A heater installed at each of the first die block and the second die block and capable of heating the entire body portion in a longitudinal direction;
A temperature sensor for measuring a temperature of the coating liquid flowing through the flow space; And
And a control unit for controlling the heat applied to the heater to maintain the temperature constant according to the type of the coating liquid coated on the coated object by the die coating machine. The die coater of claim 1, wherein the heater is installed inside the first die block and the second die block. The die coater of claim 1, wherein the heater is installed on outer walls of the first die block and the second die block. The method of claim 1, wherein the exit gap is
A width of the coating slot included in the flow space;
A height and an inclination angle of the inclined portion formed between the outlet and the coating slot; And
Die coating machine for forming a coating layer of uniform thickness, characterized in that determined according to the type of coating liquid.
KR1020100108982A 2010-11-04 2010-11-04 Die coaters for forming a coating layer having uniform thickness KR20120047426A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100108982A KR20120047426A (en) 2010-11-04 2010-11-04 Die coaters for forming a coating layer having uniform thickness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100108982A KR20120047426A (en) 2010-11-04 2010-11-04 Die coaters for forming a coating layer having uniform thickness

Publications (1)

Publication Number Publication Date
KR20120047426A true KR20120047426A (en) 2012-05-14

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KR1020100108982A KR20120047426A (en) 2010-11-04 2010-11-04 Die coaters for forming a coating layer having uniform thickness

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3984653A4 (en) * 2020-03-19 2022-11-02 LG Energy Solution, Ltd. Slot die coating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3984653A4 (en) * 2020-03-19 2022-11-02 LG Energy Solution, Ltd. Slot die coating device

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