KR20160075164A - Apparatus for drying film and system for manufacturing film including the same - Google Patents

Apparatus for drying film and system for manufacturing film including the same Download PDF

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Publication number
KR20160075164A
KR20160075164A KR1020140184808A KR20140184808A KR20160075164A KR 20160075164 A KR20160075164 A KR 20160075164A KR 1020140184808 A KR1020140184808 A KR 1020140184808A KR 20140184808 A KR20140184808 A KR 20140184808A KR 20160075164 A KR20160075164 A KR 20160075164A
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South Korea
Prior art keywords
film
unit
conduit
support
chamber
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KR1020140184808A
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Korean (ko)
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KR101767632B1 (en
Inventor
전재형
여정현
박원찬
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주식회사 엘지화학
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Priority to KR1020140184808A priority Critical patent/KR101767632B1/en
Priority to PCT/KR2015/013335 priority patent/WO2016099064A1/en
Publication of KR20160075164A publication Critical patent/KR20160075164A/en
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Publication of KR101767632B1 publication Critical patent/KR101767632B1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Mathematical Physics (AREA)

Abstract

According to the present invention, disclosed is a film drying device which can uniformly spray a drying gas while minimizing a scale. According to an aspect of the present invention, the film drying device comprises: a transfer unit configured to transfer a film, on which a solvent is applied, in one direction; and a spray unit including a chamber, which has a conduit part configured to supply a gas into the chamber and accommodates the gas supplied through the conduit part, and a rectification plate in which a plurality of penetration holes are formed so that the gas accommodated in the chamber sprays to the outside through the penetration holes. The spray unit is arranged so that a gas spray direction of the spray unit becomes the same direction as a transfer direction of the film on which the solvent is applied.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a film drying apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film drying apparatus, and more particularly, to a film drying apparatus used for drying a solvent applied to a film and a film manufacturing system including the same.

Optical films such as a polarizing plate, a semi-glare (SG) film and the like, which are applied to a liquid crystal display panel (LCD) and the like, are main optical components providing transmitted light necessary for image formation.

Such a film is mainly composed of a solvent, a polymer, and fine particles, and the characteristics of the film depend on the structure and surface shape of the fine particles. In particular, since the characteristics of the film may vary depending on changes in the drying conditions and the drying rate, the step of drying the film is an essential step in the production of the film.

In general, the film drying process has been carried out by conveying the film using the conveying means and supplying the drying gas in the process of conveying the film to dry the film.

However, in general, a dry gas supplying apparatus that is generally used is not always uniformly supplied with dry gas or even if it can uniformly supply dry gas, it is often constituted with a complicated and large scale structure including an intake duct and an exhaust duct .

Further, in the process of transferring the film in one direction, shear stress is applied to the film. If shear stress is applied to the film in this manner, the film is subjected to minute damage, which affects the quality of the film. In particular, optical films are more susceptible to such damage.

The Applicant has recognized the need for a film drying apparatus capable of uniformly spraying dry gas while minimizing the scale of the film drying apparatus from the problems of the prior art. In addition, Applicants have recognized the need for a film drying apparatus that can minimize the shear stress applied to the film during the film drying process of the film drying apparatus.

It is an object of the present invention to provide a film dryer capable of uniformly spraying a drying gas while minimizing the scale.

Another object of the present invention is to provide a film drying apparatus capable of minimizing a shearing stress applied to a film in a film drying process.

Other objects and advantages of the present invention will become apparent from the following description, and it will be understood by those skilled in the art that the present invention is not limited thereto. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

According to an aspect of the present invention, there is provided a film drying apparatus including: a transfer unit for transferring a film coated with a solvent in one direction; And a jetting unit including a chamber accommodating a gas supplied through the conduit and a flow plate having a plurality of through holes formed therein for jetting gas contained in the chamber. Here, the gas injection direction of the injection unit may be arranged to be the same direction as the transport direction of the film on which the solvent is applied.

Each of the plurality of through holes has a hexagonal shape, and the plurality of through holes can form a honeycomb structure on the rectifying plate.

The rectifying plate may be a plate elongated along the width direction of the film.

The conduit portion may include a first conduit disposed to be long in parallel with the longitudinal direction of the rectifying plate and a second conduit connected to the first conduit and extending to the outside of the chamber.

A plurality of spray holes may be formed in the first conduit to supply the gas supplied through the second conduit to the chamber.

The spray hole may be formed on the opposite surface of the first conduit opposite to the rectification plate.

The injection unit may further include a filter interposed between the chamber and the rectifying plate.

The film drying apparatus further includes a support unit for supporting the injection unit, wherein the support unit includes a support frame, at least one support column having one end connected to the injection unit and the other end connected to the support frame .

The injection unit may be configured to be capable of tilting at a predetermined angle around the support unit.

The injection unit may be hinged to the support column.

The injection unit may be configured to be movable up and down about the support unit.

The support unit may further include a cylinder provided between the other end of the support column and the support frame, and the injection unit may move up and down by the lifting operation of the support column using the cylinder.

The film drying apparatus may further include a transport unit provided below the support unit to move the support unit in a horizontal direction.

The transport unit may include a transport wheel rotatably provided on a bottom surface of the support frame, and a brake for suppressing rotation of the transport wheel by pressing the transport wheel.

The transfer unit has a transfer roll rotating around a reference axis, and the film coated with the solvent can be transferred in one direction in accordance with the rotation of the transfer roll.

The transfer unit may further include a band that is wound on the transfer roll and moves in a tangential direction of the rotation direction of the transfer roll as the transfer roll rotates.

According to another aspect of the present invention, there is provided a film manufacturing system including the above-described film drying apparatus.

According to an aspect of the present invention, there is provided a film drying apparatus capable of reducing a shearing stress applied to a film.

According to another aspect of the present invention, there is provided a film drying apparatus which has a simple structure and can uniformly distribute a gas having a constant flow rate.

According to still another aspect of the present invention, there is provided a film drying apparatus capable of setting an optimum gas injection position.

In addition, the present invention can have various other effects, and other effects of the present invention can be understood by the following description, and can be more clearly understood by the embodiments of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further the understanding of the technical idea of the invention. And should not be construed as limiting.
1 is a perspective view schematically showing a film drying apparatus according to an embodiment of the present invention.
Fig. 2 is a view of Fig. 1 viewed from the direction A. Fig.
FIG. 3 is a view showing an internal configuration of a spraying unit provided in a film drying apparatus according to an embodiment of the present invention.
Fig. 4 is an enlarged view of a portion of the rectifying plate provided in the injection unit shown in Fig. 3;
5 is a view showing an internal configuration of a spraying unit provided in a film drying apparatus according to another embodiment of the present invention.
FIG. 6 is a view showing a conduit portion provided in the chamber of the injection unit shown in FIG.
7 is a schematic view of a film drying apparatus according to another embodiment of the present invention.
8 is a view showing a film drying apparatus according to another embodiment of the present invention.
Fig. 9 is a partially enlarged view of Fig. 8. Fig.
10 is a graph showing the shear stress acting on the surface of the film.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be construed as meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Fig. 1 is a perspective view schematically showing a film drying apparatus according to an embodiment of the present invention, and Fig. 2 is a view as seen from Fig. 1 in direction A. Fig.

Referring to FIGS. 1 and 2, a film drying apparatus according to an embodiment of the present invention includes a transfer unit 100 and a spray unit 200.

The transfer unit 100 can transfer the film F coated with the solvent in one direction.

According to one embodiment, the transfer unit 100 includes a transfer roll 110 as shown in FIGS. 1 and 2, and transfers the film F in one direction through the rotation of the transfer roll 110 . Here, the feed roll 110 can rotate around the reference axis 110C. The feed roll 110 has a cylindrical shape and can rotate with the center axis of the cylinder as the reference axis 110C. In this case, the film F coated with the solvent can be conveyed along the tangential direction of the rotation direction of the conveying roll 110 while being wound around the conveying roll 110.

According to another embodiment, the transfer unit 100 includes a transfer roll 110 and a band so that the film F that is seated on the band through the movement of the band can be transferred in one direction. The band may be implemented such that it is wound on the transport roll 110 and moved as the transport roll 110 rotates. That is, the band can be moved along the tangential direction of the rotation direction of the feed roll 110 while being wound around the feed roll 110. Preferably, the band is wound on at least two feed rolls 110 and is movable in a tangential direction of the rotational direction of the feed roll 110 in contact with two feed rolls 110 located at the outermost end have. In this case, the film F coated with the solvent can be transported along the tangential direction of the rotation direction of the transport roll 110 while being seated on the upper surface of the band.

The spraying unit can jet the gas for drying the solvent to the outside. The injection unit will be described with reference to Fig.

FIG. 3 is a view showing an internal configuration of a spraying unit provided in a film drying apparatus according to an embodiment of the present invention. That is, FIG. 3 is a sectional view taken along the line B-B 'in FIG. Referring to FIG. 3, an injection unit 200 according to an embodiment of the present invention includes a chamber 230, a rectification plate 220, and a housing 210.

The housing 210 defines the contour of the injection unit 200. That is, the chamber 230 may be formed in the housing 210, and the rectifying plate 220 may be disposed. For example, the housing 210 may have a structure in which one side is open, and the flow regulating plate 220 may be provided in the opened opening (O). A through hole may be formed in the housing 210 to allow a conduit 240 to pass through. The inner circumferential surface of the through hole may be provided with a sealing member for sealing the conduit 240 and the through hole.

The rectifying plate 220 is formed on one side of the injection unit 200 so that the gas contained in the chamber 230 is injected to the outside. For this, a plurality of through holes 220h may be formed in the rectifying plate 220. [ The rectifying plate 220 may be a plate elongated in one direction and the rectifying plate 220 may be arranged to extend along the width direction of the film F disposed in the transfer unit 100 .

Fig. 4 is an enlarged view of a portion of the rectifying plate provided in the injection unit shown in Fig. 3; That is, FIG. 4 is a view of the rectifying plate 220 of FIG. 3 as viewed in the direction C. FIG.

As shown in FIG. 4, the plurality of through holes 220h formed in the rectifying plate 220 may each be a hexagonal shape. The through holes 220h may be arranged in a hexagonal shape so as to form a honeycomb structure on the flow regulating plate 220. Such a honeycomb structure makes the flow rate of the gas injected to the outside constant, and allows the gas to be uniformly injected.

Referring again to FIG. 3, the chamber 230 provides a space for accommodating a gas for jetting out. The chamber 230 may include a conduit 240 for supplying gas into the chamber 230. That is, the gas is supplied to the chamber 230 through the conduit part 240, and the supplied gas can be received in the chamber 230. One end of the conduit 240 is provided inside the chamber 230 to supply gas into the chamber 230 and the other end of the conduit 240 is connected to an external gas supply device, To an air pump for supplying air.

Preferably, the above-described injection unit 200 is arranged such that the gas injection direction of the injection unit 200 is in the same direction as the transport direction of the film F on which the solvent is applied. That is, as shown in the drawing, it is preferable that the direction of feeding or running of the film F and the gas injection direction are the same. The shearing stress applied to the film F is reduced when the gas is injected in the same direction as the feeding direction of the film F. In this case,

Also, preferably, the injection unit 200 may have a structure elongated in one direction. That is, the housing 210 may have a structure elongated in one direction, and the rectifying plate 220 disposed on one side of the housing 210 may have a structure elongated in the same direction. 1 and 2, the injection unit 200 may be arranged so as to extend along the width direction of the film F. As shown in FIG. In other words, the injection unit 200 is preferably arranged so that the longitudinal direction of the injection unit 200 is perpendicular to the running direction of the film F. According to this structure, not only the gas can be uniformly distributed along the width direction of the film F to dry the film F uniformly, but also the shearing stress applied to the film F can be minimized.

5 is a view showing an internal configuration of a spraying unit provided in a film drying apparatus according to another embodiment of the present invention. 5, the injection unit 200 according to another embodiment of the present invention includes a chamber 230, a rectification plate 220, and a housing 210, and includes a chamber 230 and a rectification plate 220, And a filter (250) interposed between the two filters (250).

The filter 250 may remove impurities contained in the gas contained in the chamber 230. The filter 250 also prevents the gas in the chamber 230 from being injected directly through the rectifying plate 220 so that the gas can be evenly distributed in the chamber 230.

FIG. 6 is a view showing a conduit portion provided in the chamber of the injection unit shown in FIG.

Referring to FIGS. 5 and 6, the injection unit 200 according to another embodiment of the present invention is provided with a conduit unit 240 extending in a direction parallel to the rectification plate 220. That is, the rectifying plate 220 has a structure elongated in one direction, and the conduit part 240 provided in the chamber 230 is connected to the first conduit (not shown) disposed in parallel with the longitudinal direction of the rectifying plate 220 241). The conduit 240 may include a second conduit 242 connected to the first conduit 241 and extending to the outside of the chamber 230. The first conduit (241) and the second conduit (242) may be provided with an empty space to provide a passage for transporting the fluid.

Here, the second conduit 242 may extend outside the chamber 230 to supply a gas from an external gas supply device, and may provide a path for transferring the supplied gas to the first conduit 241. The first conduit 241 can supply the gas supplied from the second conduit 242 to the chamber 230. That is, in the first conduit 241, a plurality of spray holes may be formed. Accordingly, the gas supplied through the second conduit 242 can be supplied to the chamber 230 through the plurality of spray holes. At this time, the plurality of spray holes may be uniformly distributed along the longitudinal direction of the first conduit 241.

6, the plurality of spray holes may be formed on the outer surface of the first conduit 241 and may be formed on the opposite surface of one surface of the first conduit 241 facing the rectifying plate 220 As shown in FIG. That is, when the rectifying plate 220 and the first conduit 241 are arranged in parallel, the outer surface of the first conduit 241 facing the rectifying plate 220 and the first conduit 241 faces the first conduit 241, A plurality of spray holes may be formed on a surface of the first conduit 241 opposite to the one surface of the conduit 241. According to this structure, the gas supplied to the chamber 230 through the spray hole does not advance to the side where the rectification plate 220 is located, but proceeds to the opposite side of the rectification plate 220. Accordingly, the gas supplied to the chamber 230 can be evenly distributed in the chamber 230 without being directly blown out through the rectifying plate 220. [

7 is a schematic view of a film drying apparatus according to another embodiment of the present invention. Referring to FIG. 7, the film drying apparatus according to another embodiment of the present invention further includes a support unit 300 for supporting the above-described injection unit 200.

The support unit 300 is connected to the injection unit 200 to support the injection unit 200. The support unit 300 includes a support frame 310 and at least one support post 320. The support frame 310 is a basic structure of the support unit 300, and may be installed on the ground or the like. The support pillar 320 connects the support frame 310 and the injection unit 200. That is, one end of the support column 320 is connected to the injection unit 200, and the other end of the support column 320 is connected to the support frame 310. More specifically, one end of the support column 320 is connected to the housing 210 of the injection unit 200, and the other end of the support column 320 is connected to the support frame 310.

Here, the injection unit 200 may be configured to be able to tilt at a predetermined angle about the support unit 300. 7, the housing 210 of the injection unit 200 is hinged to the support pillars 320 of the support unit 300, so that the injection unit 200 can be tilted at a predetermined angle. The injection unit 200 can be tilted so as to form a proper or optimum injection angle in relation to the film F seated on the transfer unit 100. [

In addition, the injection unit 200 may be configured to be movable up and down about the support unit 300. As shown in FIG. 7, the injection unit 200 can be moved up and down by the lifting operation of the support pillars 320 provided in the support unit 300.

According to one embodiment, the support unit 300 includes a cylinder between the other end of the support column 320 and the support frame 310, and selectively supplies the fluid to the cylinder to support the support column 320 in the upward direction Or move it downward. At this time, a piston is provided inside the cylinder, and a piston rod fixed to the piston and performing linear motion together with the piston may be provided. The piston rod may have a separate structure, and the support column 320 itself may serve as a piston rod.

FIG. 8 is a view showing a film drying apparatus according to still another embodiment of the present invention, and FIG. 9 is a partially enlarged view of FIG.

8 and 9, a film drying apparatus according to another embodiment of the present invention includes a supporting unit 300 and a support unit 300. The film drying apparatus includes a supporting unit 300 and a supporting unit 300, And a transportation unit (400).

According to one embodiment, the transport unit 400 may include a transport wheel 410. The transportation unit 400 includes a wheel frame 420 coupled to a bottom surface of the support frame 310. The transfer wheel 410 is rotatably coupled to the wheel frame 420 through a wheel shaft 430. The transporting wheel 410 may rotate about the wheel shaft 430 to move the support frame 310 in a direction parallel to the ground.

Alternatively, the wheel frame 420 may be coupled to the support frame 310 of the support unit 300 so as to be rotatable 360 degrees (see the bearing shown by B in Fig. 9). Optionally, at one end of the wheel frame 420, a brake 440 may be provided which is rotatable at a predetermined angle about an axis of the wheel frame 420. The brakes 440 and the wheel frames 420 are formed with holes through which the fixing shafts 450 can be inserted respectively so that the brakes 440 and the wheel frames 420 are inserted through the fixing shafts 450 And is rotatably coupled. The brake 440 is configured to suppress the rotation of the transportation wheel 410 by pressing the transportation wheel 410 by rotating at a predetermined angle in one direction.

Such a transportation unit 400 enables horizontal movement of the injection unit 200, so that the gas injection direction or the injection distance can be adjusted. In addition, the transport unit 400 makes it easy to install or unload the film drying apparatus.

Hereinafter, the simulation result showing the effect of reducing the shear stress acting on the film surface when the gas is supplied in the same direction as the traveling direction of the film will be briefly described. In addition, the simulation results below show that the smaller the height difference between the film and the ejection unit (i.e., the gap between the film and the ejection unit, see D in Fig. 7), the smaller the shear stress acting on the surface of the film .

10 is a graph showing the shear stress acting on the surface of the film. Referring to FIG. 10, there is shown a simulation result for a case where a gas is not sprayed and a case where a gas is sprayed, in which the height difference between the film and the spray unit is different. In this simulation, the injection direction of the gas was in the same direction as the running direction of the film. This simulation was performed using Fluent15, one of the flow analysis programs.

In FIG. 10, the x-axis represents the position of the film when the position of the injection unit is zero, and the y-axis represents shear stress corresponding to the position of the film. The film advances in the -x axis direction, and the gas jet direction is also the -x axis direction.

First, when we look at the graph with no device, we can see that the overall shear stress applied to the film is large compared to the rest of the graph. That is, it can be confirmed that when the gas is supplied in the same direction as the traveling direction of the film, the shearing stress applied to the film is reduced.

Next, in the remaining graphs indicated by intervals 1, 2, and 3, it can be seen that as the spacing decreases, the shear stress applied to the film is generally reduced (here, The gap difference and the gap between interval_2 and interval_3 are the same). That is, it can be seen that as the distance between the film and the gas to be injected is reduced, the shear stress applied to the film is generally reduced.

According to another aspect of the present invention, the film drying apparatus described above may be a component of a film production system. That is, the film production system according to another aspect of the present invention may include the film drying apparatus described above. The film production system may further include, in addition to the film drying apparatus, an apparatus for forming a film fabric, an apparatus for stretching the film, a coating apparatus, and the like.

The present invention provides a film drying apparatus capable of reducing the shear stress applied to a film as described above. The present invention also provides a film drying apparatus which has a simple structure and can uniformly distribute a gas having a constant flow rate. Further, the present invention provides a film drying apparatus capable of setting an optimum gas injection position.

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 to be limited to the details thereof and that various changes and modifications will be apparent to those skilled in the art. And various modifications and variations are possible within the scope of the appended claims.

The features described in the individual embodiments herein may be combined and implemented in a single embodiment. Conversely, various features described herein in a single embodiment may be implemented in various embodiments individually or in a suitable subcombination.

F: Film 100: Feed unit
110: Feed roll 110C: Reference axis
200: injection unit 210: housing
220: rectification plate 220h: through hole
230 chamber 240 chamber
241: First conduit 241h: Spray hole
242: second conduit 250: filter
300: support unit 310: support frame
320: Support column 400: Transport unit
410: transport wheel 420: wheel frame
430: wheel shaft 440: brake
450: Fixed shaft B: Bearing

Claims (17)

A transfer unit for transferring the film coated with the solvent in one direction; And
And a flow regulating plate provided with a chamber accommodating the gas supplied through the conduit and a plurality of through holes for allowing the gas contained in the chamber to be discharged to the outside,
Wherein the gas ejection direction of the ejection unit is arranged so as to be in the same direction as the transport direction of the film coated with the solvent.
The method according to claim 1,
Wherein the plurality of through holes each have a hexagonal shape, and the plurality of through holes form a honeycomb structure on the rectifying plate.
The method according to claim 1,
Wherein the rectifying plate is a plate elongated along the width direction of the film.
The method of claim 3,
Wherein the conduit portion includes a first conduit arranged to be parallel to the longitudinal direction of the rectifying plate and a second conduit connected to the first conduit and extending to the outside of the chamber.
5. The method of claim 4,
Wherein a plurality of spray holes are formed in the first conduit to supply gas supplied through the second conduit to the chamber.
6. The method of claim 5,
Wherein the spray hole is formed on an opposite surface of one side of the first conduit opposite to the rectification plate.
The method according to claim 1,
Wherein the injection unit further comprises a filter interposed between the chamber and the rectifying plate.
The method according to claim 1,
The film drying apparatus further includes a support unit for supporting the injection unit,
Wherein the support unit includes a support frame and at least one support column having one end connected to the injection unit and the other end connected to the support frame.
9. The method of claim 8,
Wherein the injection unit is capable of tilting at a predetermined angle around the support unit.
10. The method of claim 9,
Wherein the injection unit is hinged to the support column.
9. The method of claim 8,
Wherein the spraying unit is movable up and down about the support unit.
12. The method of claim 11,
The support unit further includes a cylinder provided between the other end of the support column and the support frame,
Wherein the injection unit is vertically moved by an elevating operation of the support column using the cylinder.
9. The method of claim 8,
Wherein the film drying apparatus further comprises a transport unit provided below the support unit to move the support unit in a horizontal direction.
14. The method of claim 13,
Wherein the transport unit comprises a transport wheel rotatably provided on a bottom surface of the support frame, and a brake for suppressing rotation of the transport wheel by pressing the transport wheel.
12. The method of claim 11,
Wherein the conveying unit includes a conveying roll that rotates about a reference axis,
Wherein the solvent-coated film is transferred in one direction in accordance with rotation of the transport roll.
16. The method of claim 15,
Wherein the conveying unit further comprises a band wound on the conveying roll and moving in a tangential direction of a rotation direction of the conveying roll as the conveying roll rotates.
17. A film manufacturing system comprising a film drying apparatus according to any one of claims 1 to 16.

KR1020140184808A 2014-12-19 2014-12-19 Apparatus for drying film and system for manufacturing film including the same KR101767632B1 (en)

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
KR20200026349A (en) * 2018-08-29 2020-03-11 김영호 A apparatus for drying the coated film
CN111482328A (en) * 2020-04-13 2020-08-04 Tcl华星光电技术有限公司 Coating device and coating method thereof

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US20080099954A1 (en) * 2005-03-30 2008-05-01 Fujifilm Corporation Solution Casting Method
KR100691473B1 (en) 2005-11-17 2007-03-09 주식회사 케이씨텍 Air knife module for drying substrate and drying device using thereof
KR101272328B1 (en) * 2005-12-14 2013-06-07 삼성디스플레이 주식회사 Ink jet printing system and manufacturing method of thin film transistor array panel using the same
KR100753959B1 (en) * 2006-01-12 2007-08-31 에이펫(주) Drying method using apparatus for drying substrate
JP5648782B2 (en) * 2010-01-18 2015-01-07 日本ゼオン株式会社 Film manufacturing apparatus and manufacturing method
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KR20140042652A (en) * 2012-09-28 2014-04-07 후지필름 가부시키가이샤 Solution film-forming method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200026349A (en) * 2018-08-29 2020-03-11 김영호 A apparatus for drying the coated film
CN111482328A (en) * 2020-04-13 2020-08-04 Tcl华星光电技术有限公司 Coating device and coating method thereof

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