WO2005068196A1 - Apparatus for laminating green sheet - Google Patents

Apparatus for laminating green sheet Download PDF

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Publication number
WO2005068196A1
WO2005068196A1 PCT/KR2004/002077 KR2004002077W WO2005068196A1 WO 2005068196 A1 WO2005068196 A1 WO 2005068196A1 KR 2004002077 W KR2004002077 W KR 2004002077W WO 2005068196 A1 WO2005068196 A1 WO 2005068196A1
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WO
WIPO (PCT)
Prior art keywords
green sheet
cutting
glass panel
head
lamination
Prior art date
Application number
PCT/KR2004/002077
Other languages
French (fr)
Inventor
Hyeon-Taeg Gim
Byung-Hyun Im
Hyun-Il Kim
Original Assignee
One System Co., Ltd.
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 One System Co., Ltd. filed Critical One System Co., Ltd.
Publication of WO2005068196A1 publication Critical patent/WO2005068196A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B18/00—Layered products essentially comprising ceramics, e.g. refractory products
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
    • C03C17/32—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/10—Removing layers, or parts of layers, mechanically or chemically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/18—Handling of layers or the laminate
    • B32B38/1825—Handling of layers or the laminate characterised by the control or constructional features of devices for tensioning, stretching or registration
    • B32B38/1833—Positioning, e.g. registration or centering
    • B32B38/1841—Positioning, e.g. registration or centering during laying up
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/6346—Polyesters
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • C04B35/645—Pressure sintering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/77—Uncured, e.g. green
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
    • B32B2315/02—Ceramics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
    • B32B2315/08—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
    • H01J2211/20—Constructional details
    • H01J2211/34—Vessels, containers or parts thereof, e.g. substrates
    • H01J2211/36—Spacers, barriers, ribs, partitions or the like

Definitions

  • the present invention relates to a green sheet lamination apparatus for joining a green sheet to a glass panel in order to form a dielectric rib and a barrier rib of Plasma Display Panel (PDP), more particularly to the green sheet lamination apparatus that the green sheet, which is wound and provided from a bobbin, maintains the direction of unwound, and has little change of curvature, is provided for a glass panel, and prevents the green sheet from being damaged by reverse bending.
  • PDP Plasma Display Panel
  • FIG. 1 is a cross sectional view showing the constitution of the green sheet.
  • the green sheet 1 has a ceramic film layer 2 and protection films 3 and 3' attached to both sides of the ceramic film layer 2.
  • the protection films 3 and 3' are made of PET (polyethylene terephthalate).
  • FIG. 2 is a schematic view showing the constitution of conventional green sheet laminating apparatus.
  • the conventional green sheet lamination apparatus has a material roller 20 providing the green sheet 1, a lamination head (not shown) aligning the ceramic film layer 2 of the green sheet 1 that the protecting film 3 is stripped at a wanted position on a glass panel 4, a hot roller 60 pressing and attaching the green sheet 1 to the glass panel 4.
  • the conventional green sheet lamination apparatus also has a retrieving roller 30 collecting the protection film 3 and a cutting unit 50 cutting the green sheet 1 by the wanted length.
  • the green sheet 1 which is unwounded from the material roller 20 and gets changed in direction from a direction (clockwise) winded at the material roller to a direction (counter clockwise), changes direction by being peeled from an idle roller 82, once more changes direction (to counter clockwise) as passing through the cutting unit 50, is pressed and attached to the glass panel 4.
  • the green sheet 1 endures the bending and the reverse bending, on the surface of the green sheet 1 consisted of materials having different strength of elasticity and plasticity, uneven damages happen.
  • the present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a green sheet lamination apparatus that doesn't endure bending and reverse bending for pressing and attaching a glass sheet to a glass panel.
  • a green sheet lamination apparatus comprising a material roller around which a green sheet is wound; a lamination head located on upper side of a glass panel for introducing the green sheet from the material roller to the upper side of the glass panel, and introducing and stripping a lower protection film attached to a bottom of the green sheet to the reverse direction to the proceeding direction of the green sheet; a retrieving roller winding and retrieving the lower protection film separated from the green sheet; a cutting unit located between the material roller and the lamination head for cutting the green sheet by the size of the glass panel; and a hot roller joining the green sheet to the upper surface of the glass panel by heating and pressing the green sheet.
  • the lamination apparatus can further include a horizontal table moving and locating the glass panel at a certain position. It is considerable for the green sheet unwounded and provided from the stroller not to have a bending variance opposite direction to bending variance which is in situation wounded in the material roller until the under protection film is stripped from the lamination head.
  • the lamination head may include a vacuum plate absorbing the end of the green sheet, and a knife, the lower protection film extended over an end of the knife, helping the under protection film stripped from the green sheet as the retrieving roller winds and draws the under protection film.
  • the lamination apparatus may further comprises an aligning camera installed on the upper side of the end of the lamination head so as to be moved up and down for sensing the position when the lamination head aligns the green sheet on the glass panel, and a controller moving the lamination head so as to correct the location of the lamination head by using image information sensed from the aligning camera.
  • the cutting unit may include a cutting table, on the upper surface of which the green sheet passes through with surface-contacting, a cutting head installed on the cutting table for cutting the green sheet by rotating, and a cutting head transmitting part for transmitting the cutting head on the cutting table.
  • the cutting head transmitting part may include a plurality of linear transmitting means for transmitting the cutting head to the horizontal direction and the vertical direction with respect to the upper surface of the cutting table.
  • FIG. 1 is a partial cross sectional view of a green sheet
  • FIG. 2 is a side view of a conventional green sheet lamination apparatus
  • FIG. 3 is a side view of a green sheet lamination apparatus according to the present invention
  • FIG. 4 is an enlarged view of part "A" in FIG. 3
  • FIG. 5 is a plan view of the horizontal table illustrating the method of correcting the position and direction of the horizontal table
  • FIG. 6 is a side view of a cutting unit used in the green sheet lamination apparatus according to the present invention
  • FIG. 7 is an enlarged view of part "B" in FIG. 6
  • FIG. 8 through FIG. 13 are views step- wisely illustrating the processes of joining the green sheet on the glass panel by use of the green sheet lamination apparatus according to the present invention.
  • FIG. 3 is a schematic side view of a lamination apparatus according to the present invention.
  • the lamination apparatus 100 has a horizontal table 70 aligning and fixing a glass panel 4, a lamination head 10 peeling a protection film 3 at the under side from the green sheet 1 which is composed of a ceramic film layer 2 and two protection films 3 joined respectively at the upper and lower side of the film layer 2, and aligning the green sheet 1 at the wanted position in order that the ceramic film layer 2 can be pressed and attached to the glass panel 4, a hot roller 60 heating and adhering the green sheet 1 to the upper side of the glass panel 4, material rollers 20 and 20' providing the green sheet 1, retrieving rollers 30 and 30' winding the protection film 3 stripped from the green sheet 1, a cutting unit 50 having the cutting head 51 for cutting the green sheet 1 at the wanted position.
  • FIG. 3 there are illustrated two material rollers 20 and 20' and two retrieving rollers 30 and 30' in the lamination apparatus according to the
  • the hot roller 60 when the green sheet 1 is situated at a position adhered to the glass panel 4, by rolling and pressing the upper side of the green sheet 1, performs the function of joining the green sheet 1 to the glass panel 4.
  • the hot roller 60 has a heater (not shown) heating the hot roller 60. A part of the green sheet 1 contacting the hot roller 60 is heated.
  • the material rollers 20 and 20' which are composed of a form of bobbin winding the green sheet 1, have the green sheet 1 wind off and provided according to the speed of the green sheet 1. As described above, the material rollers 20 and 20' can be equipped with plural according to necessity.
  • the retrieving rollers 30 and 30' which are composed of a form of bobbin winding the protection film 3 stripped from the green sheet 1 at the lamination head 10, have continuous peeling proceed by winding the protection film 3 according to wording speed.
  • an aligning camera 80 which is equipped to be able to move up and down, is equipped at the upper side of the lamination head 10.
  • the aligning camera 80 which performs the function of sensing whether positions are within the range of error, can control the position of the lamination head precisely by user's operation or automatic control algorithm from the image information sensed from the aligning camera 80.
  • the elevation movement of up and down direction of the aligning camera 80 can be driven by a straight-line motion apparatus like an oil- pressured cylinder with a certain stroke.
  • the horizontal table 70 may have, on the upper side of which the glass panel 4 is situated and fixed, a keeping-warmth unit (not shown) to keep warmth of the glass panel heated before flowed in the green sheet lamination apparatus, a transmitting unit (not shown) transmitting the horizontal table toward the same direction of the proceeding direction of the green sheet, and a direction adjusting unit (not shown) adjusting precisely the position and direction on the surface of the horizontal table.
  • the direction adjusting unit as shown in FIG. 5, performs a function of adjusting the position of the x-axis and the y-axis on the plane of the horizontal table, and the rotation angle around the z-axis. By doing so, it makes the green sheet 1 and the glass panel 4 joined at an exact position.
  • the keeping- warmth unit can be an electric heater
  • the transmitting unit can be composed of a linear guide installed parallel to the transmitting direction and a motor driving the linear guide.
  • the direction adjusting unit can be composed of a linear guide equipped in parallel at three edges of the horizontal table with a form of a rectangle and the motor driving the linear guide.
  • FIG. 4 is an enlarged view of part "A" in FIG. 3. As shown in FIG. 4, the lamination head 10 has a vacuum plate 11 absorbing the end of the green sheet 1, and a knife 12 the end of which is formed sharply. The lower protection film 3 of the green sheet 1 is stripped by the knife 12.
  • FIG. 6 is a side view of the cutting unit. As shown in FIG. 6, the cutting unit
  • the 50 has a cutting table 56 on the upper side of which the green sheet 1 passes through, a disc-shaped cutting head 51, which is positioned on the cutting table 56, rotating and cutting the green sheet 1 by a certain length, a cutting head transmitting part that transmits the cutting head to the x', y', and z'-axis with respect to the green sheet on the cutting table 56.
  • the x', y', and z'-axis is the Cartesian coordinate referenced to the cutting table, as shown in FIG. 6.
  • the cutting head transmitting part has a x'-axis transmitting part 55 transmitting the cutting head 51 perpendicular to the drawing (the x'-axis direction) on the cutting table 56, a y'-axis transmitting part 53 transmitting the cutting head 51 according to the direction of the green sheet on the cutting table 56, a z'-axis transmitting part 55 transmitting the cutting head 51 perpendicular to the cutting table 56 (the z-axis direction).
  • the cutting head 51 is driven by a motor (not shown).
  • the cutting head 15 rotates and cuts the green sheet 1.
  • the x'-axis transmitting part 55 is composed of a linear guide and moves the rotating cutting head 15 to the direction perpendicular to the proceeding direction of the green sheet 1 so that the green sheet 1 is cut.
  • the y'-axis and z'-axis transmitting part 53 and 52 may be composed of an oil-pressured cylinder. Meanwhile, the cutting unit 50 may have an angle control part (not shown), the vacuum plate 54 absorbing and fixing the green sheet on the course of cutting process.
  • the x', y', and z'-axis transmitting part 52, 53, and 55 can be composed of linear guides respectively, they are not confined to that, and various linear transmitting apparatus can be used.
  • FIG. 7 is an enlarged view of part "B" in FIG. 6. As shown in FIG. 7, the cutting head 51 of the cutting unit 50 doesn't cut the green sheet completely, but uses the half cutting method which cuts through the ceramic film layer 2.
  • FIG. 8 through FIG. 13 are views showing the process of pressing the green sheet on the glass panel by use of the green sheet lamination apparatus according to the invention.
  • the lamination head 10 and the aligning camera 80 are positioned downward, and the hot roller 60 stays in the outward state.
  • the glass panel 4 and the green sheet 1 are provided toward the lamination head 10.
  • the aligning camera is raised.
  • FIG. 11 after the lamination head 10 is raised and the hot roller 60 enters at the pressing position, by rotating the hot roller 60, the process of joining the green sheet 1 on the glass panel is started.
  • the hot roller 60 rotates at the pressing position and has the green sheet 1 join to the glass panel 4, has the glass panel 4 and the green sheet 1 progress.
  • FIG. 12 when joining process is completed, the hot roller 60 is raised and the knife is backward. After that, as shown in FIG. 13, the lamination apparatus 100 has returned to the stand-by state.
  • the components are aligned in order that the green sheet 1 provided from the material roller 20 and 20' is not bent to the opposite direction of winding. That is, as the direction the green sheet 1 in the state of wound at the material rollers 20 and 20' wound off and provided are provided for the table of the cutting unit, and is transmitted along with the table surface, and is provided to the lamination head 10. In other words, by maintaining the direction of wind-off, the curvature at the green sheet 1 is maintained within a certain range, reverse bending opposite to bending has not caused.
  • the invention can prevent from causing the parting line on the green sheet 1 and uneven of plastic layer after combining with the glass panel (4) by preventing the green sheet from repeatedly bending. Also, according to the present invention, since the lower protection film of the green sheet is stripped right before pressed on the glass panel 4, even when the entry of glass is delayed, it can be avoided that the ceramic film layer part is opened in advance from being pressed unevenly. Also, according to the present invention, the margin management becomes easy by cutting in advance before lamination progression, whereas the variance of margin is large by the cutting of the green sheet in the conventional lamination apparatus.
  • the green sheet is laminated by lamination apparatus according to the invention, the invention can be applied to various kinds of films with a certain width, and it also is included in the range of the invention.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Abstract

A green sheet lamination apparatus has a material roller around which a green sheet is wound, a lamination head located on upper side of a glass panel for introducing the green sheet from the material roller to the upper side of the glass panel, and introducing and stripping a lower protection film attached to a bottom of the green sheet to the reverse direction to the proceeding direction of the green sheet, a retrieving roller winding and retrieving the lower protection film separated from the green sheet, a cutting unit located between the material roller and the lamination head for cutting the green sheet by the size of the glass panel, and a hot roller joining the green sheet to the upper surface of the glass panel by heating and pressing the green sheet. The green sheet lamination apparatus can prevent from causing the parting line on the green sheet and uneven of plastic layer after combining with the glass panel, as it can prevent the green sheet from repeatedly bending.

Description

APPARATUS FOR LAMINATING GREEN SHEET
TECHNICAL FIELD The present invention relates to a green sheet lamination apparatus for joining a green sheet to a glass panel in order to form a dielectric rib and a barrier rib of Plasma Display Panel (PDP), more particularly to the green sheet lamination apparatus that the green sheet, which is wound and provided from a bobbin, maintains the direction of unwound, and has little change of curvature, is provided for a glass panel, and prevents the green sheet from being damaged by reverse bending.
BACKGROUND ART FIG. 1 is a cross sectional view showing the constitution of the green sheet. As shown in FIG. 1 , the green sheet 1 has a ceramic film layer 2 and protection films 3 and 3' attached to both sides of the ceramic film layer 2. The protection films 3 and 3' are made of PET (polyethylene terephthalate). FIG. 2 is a schematic view showing the constitution of conventional green sheet laminating apparatus. As shown in FIG. 2, the conventional green sheet lamination apparatus has a material roller 20 providing the green sheet 1, a lamination head (not shown) aligning the ceramic film layer 2 of the green sheet 1 that the protecting film 3 is stripped at a wanted position on a glass panel 4, a hot roller 60 pressing and attaching the green sheet 1 to the glass panel 4. The conventional green sheet lamination apparatus also has a retrieving roller 30 collecting the protection film 3 and a cutting unit 50 cutting the green sheet 1 by the wanted length. In the conventional green sheet lamination apparatus, the green sheet 1 which is unwounded from the material roller 20 and gets changed in direction from a direction (clockwise) winded at the material roller to a direction (counter clockwise), changes direction by being peeled from an idle roller 82, once more changes direction (to counter clockwise) as passing through the cutting unit 50, is pressed and attached to the glass panel 4. As such, for the green sheet 1 endures the bending and the reverse bending, on the surface of the green sheet 1 consisted of materials having different strength of elasticity and plasticity, uneven damages happen. Such damaged portions leave after the green sheet is attached to the glass panel 4 and have cause badness of products. Meanwhile, in the conventional lamination apparatus, as the work process of stripping the protection film 3 for the green sheet 1 has occur in advance before the glass panel 4 enter the lamination apparatus, the chance that the ceramic film layer 2 is exposed for more than a certain time happens frequently. Because of this, as the exposing time to air is longer, 'there is a problem that the joining performance of the apparatus has been declined because the junction between the green sheet 1 and the glass panel 4 doesn't do well. Therefore, the necessities for developing the green sheet lamination apparatus that can avoid damages caused by enduring bending and reverse bending repeatedly, and join the glass panel 4 to the green sheet 1 right after filling are gathering strength.
DETAILED DESCRIPTION OF THE INVENTION TECHNICAL PROBLEM TO BE SOLVED The present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a green sheet lamination apparatus that doesn't endure bending and reverse bending for pressing and attaching a glass sheet to a glass panel.
TECHNICAL SOLVING METHOD The above object is accomplished by providing a green sheet lamination apparatus comprising a material roller around which a green sheet is wound; a lamination head located on upper side of a glass panel for introducing the green sheet from the material roller to the upper side of the glass panel, and introducing and stripping a lower protection film attached to a bottom of the green sheet to the reverse direction to the proceeding direction of the green sheet; a retrieving roller winding and retrieving the lower protection film separated from the green sheet; a cutting unit located between the material roller and the lamination head for cutting the green sheet by the size of the glass panel; and a hot roller joining the green sheet to the upper surface of the glass panel by heating and pressing the green sheet. Besides, the lamination apparatus according to the invention can further include a horizontal table moving and locating the glass panel at a certain position. It is considerable for the green sheet unwounded and provided from the stroller not to have a bending variance opposite direction to bending variance which is in situation wounded in the material roller until the under protection film is stripped from the lamination head. The lamination head may include a vacuum plate absorbing the end of the green sheet, and a knife, the lower protection film extended over an end of the knife, helping the under protection film stripped from the green sheet as the retrieving roller winds and draws the under protection film. Furthermore, the lamination apparatus may further comprises an aligning camera installed on the upper side of the end of the lamination head so as to be moved up and down for sensing the position when the lamination head aligns the green sheet on the glass panel, and a controller moving the lamination head so as to correct the location of the lamination head by using image information sensed from the aligning camera. The cutting unit may include a cutting table, on the upper surface of which the green sheet passes through with surface-contacting, a cutting head installed on the cutting table for cutting the green sheet by rotating, and a cutting head transmitting part for transmitting the cutting head on the cutting table. The cutting head transmitting part may include a plurality of linear transmitting means for transmitting the cutting head to the horizontal direction and the vertical direction with respect to the upper surface of the cutting table.
BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. 1 is a partial cross sectional view of a green sheet; FIG. 2 is a side view of a conventional green sheet lamination apparatus; FIG. 3 is a side view of a green sheet lamination apparatus according to the present invention; FIG. 4 is an enlarged view of part "A" in FIG. 3; FIG. 5 is a plan view of the horizontal table illustrating the method of correcting the position and direction of the horizontal table; FIG. 6 is a side view of a cutting unit used in the green sheet lamination apparatus according to the present invention; FIG. 7 is an enlarged view of part "B" in FIG. 6; and FIG. 8 through FIG. 13 are views step- wisely illustrating the processes of joining the green sheet on the glass panel by use of the green sheet lamination apparatus according to the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION FIG. 3 is a schematic side view of a lamination apparatus according to the present invention. As shown in FIG. 3, the lamination apparatus 100 according to the present invention has a horizontal table 70 aligning and fixing a glass panel 4, a lamination head 10 peeling a protection film 3 at the under side from the green sheet 1 which is composed of a ceramic film layer 2 and two protection films 3 joined respectively at the upper and lower side of the film layer 2, and aligning the green sheet 1 at the wanted position in order that the ceramic film layer 2 can be pressed and attached to the glass panel 4, a hot roller 60 heating and adhering the green sheet 1 to the upper side of the glass panel 4, material rollers 20 and 20' providing the green sheet 1, retrieving rollers 30 and 30' winding the protection film 3 stripped from the green sheet 1, a cutting unit 50 having the cutting head 51 for cutting the green sheet 1 at the wanted position. In FIG. 3, there are illustrated two material rollers 20 and 20' and two retrieving rollers 30 and 30' in the lamination apparatus according to the present invention.
However, it is not necessary for the invention to be equipped with two material rollers and two retrieving rollers respectively, and it is possible to be equipped with one or more material roller and retrieving roller. The hot roller 60, when the green sheet 1 is situated at a position adhered to the glass panel 4, by rolling and pressing the upper side of the green sheet 1, performs the function of joining the green sheet 1 to the glass panel 4. The hot roller 60 has a heater (not shown) heating the hot roller 60. A part of the green sheet 1 contacting the hot roller 60 is heated. The material rollers 20 and 20', which are composed of a form of bobbin winding the green sheet 1, have the green sheet 1 wind off and provided according to the speed of the green sheet 1. As described above, the material rollers 20 and 20' can be equipped with plural according to necessity. The retrieving rollers 30 and 30', which are composed of a form of bobbin winding the protection film 3 stripped from the green sheet 1 at the lamination head 10, have continuous peeling proceed by winding the protection film 3 according to wording speed. It is considerable that an aligning camera 80, which is equipped to be able to move up and down, is equipped at the upper side of the lamination head 10. The aligning camera 80, which performs the function of sensing whether positions are within the range of error, can control the position of the lamination head precisely by user's operation or automatic control algorithm from the image information sensed from the aligning camera 80. The elevation movement of up and down direction of the aligning camera 80 can be driven by a straight-line motion apparatus like an oil- pressured cylinder with a certain stroke. The horizontal table 70 may have, on the upper side of which the glass panel 4 is situated and fixed, a keeping-warmth unit (not shown) to keep warmth of the glass panel heated before flowed in the green sheet lamination apparatus, a transmitting unit (not shown) transmitting the horizontal table toward the same direction of the proceeding direction of the green sheet, and a direction adjusting unit (not shown) adjusting precisely the position and direction on the surface of the horizontal table. The direction adjusting unit, as shown in FIG. 5, performs a function of adjusting the position of the x-axis and the y-axis on the plane of the horizontal table, and the rotation angle around the z-axis. By doing so, it makes the green sheet 1 and the glass panel 4 joined at an exact position. Known means can be used as the keeping- warmth unit, the transmitting unit, and the direction adjusting unit. For example, the keeping-warmth unit can be an electric heater; the transmitting unit can be composed of a linear guide installed parallel to the transmitting direction and a motor driving the linear guide. Moreover, the direction adjusting unit can be composed of a linear guide equipped in parallel at three edges of the horizontal table with a form of a rectangle and the motor driving the linear guide. FIG. 4 is an enlarged view of part "A" in FIG. 3. As shown in FIG. 4, the lamination head 10 has a vacuum plate 11 absorbing the end of the green sheet 1, and a knife 12 the end of which is formed sharply. The lower protection film 3 of the green sheet 1 is stripped by the knife 12. In other words, in the situation that the lower protection film 3 of the green sheet 1 crosses over at the sharp edge of the knife 12, as the hot roller 60 pressing the upper side of the green sheet rotates and draws the lower protection film 3, and at the same time the retrieving rollers 30 and 30' rotate and draw the lower protection film 3, and then the lower protection film 3 is peeled from the green sheet 1. Moreover, the lamination head 10 performs a function of aligning the end of the green sheet 1 at a certain attaching position on the glass panel 4. FIG. 6 is a side view of the cutting unit. As shown in FIG. 6, the cutting unit
50 has a cutting table 56 on the upper side of which the green sheet 1 passes through, a disc-shaped cutting head 51, which is positioned on the cutting table 56, rotating and cutting the green sheet 1 by a certain length, a cutting head transmitting part that transmits the cutting head to the x', y', and z'-axis with respect to the green sheet on the cutting table 56. Wherein, the x', y', and z'-axis is the Cartesian coordinate referenced to the cutting table, as shown in FIG. 6. The cutting head transmitting part has a x'-axis transmitting part 55 transmitting the cutting head 51 perpendicular to the drawing (the x'-axis direction) on the cutting table 56, a y'-axis transmitting part 53 transmitting the cutting head 51 according to the direction of the green sheet on the cutting table 56, a z'-axis transmitting part 55 transmitting the cutting head 51 perpendicular to the cutting table 56 (the z-axis direction). The cutting head 51 is driven by a motor (not shown). The cutting head 15 rotates and cuts the green sheet 1. The x'-axis transmitting part 55 is composed of a linear guide and moves the rotating cutting head 15 to the direction perpendicular to the proceeding direction of the green sheet 1 so that the green sheet 1 is cut. The y'-axis and z'-axis transmitting part 53 and 52 may be composed of an oil-pressured cylinder. Meanwhile, the cutting unit 50 may have an angle control part (not shown), the vacuum plate 54 absorbing and fixing the green sheet on the course of cutting process. The x', y', and z'-axis transmitting part 52, 53, and 55 can be composed of linear guides respectively, they are not confined to that, and various linear transmitting apparatus can be used. FIG. 7 is an enlarged view of part "B" in FIG. 6. As shown in FIG. 7, the cutting head 51 of the cutting unit 50 doesn't cut the green sheet completely, but uses the half cutting method which cuts through the ceramic film layer 2. By doing so, the lower protection film 3 can be retrieved and wound by the retrieving rollers 30 and 30', and the progression of the green sheet 1 can be performed continuously. Hereafter, the process of pressing the green sheet to the glass panel is described by use of the green sheet lamination according to the invention. FIG. 8 through FIG. 13 are views showing the process of pressing the green sheet on the glass panel by use of the green sheet lamination apparatus according to the invention. As shown in FIG.8, at stand-by state, the lamination head 10 and the aligning camera 80 are positioned downward, and the hot roller 60 stays in the outward state. As 'shown in FIG. 9, on the state that components are allocated to the equal state to the stand-by state, the glass panel 4 and the green sheet 1 are provided toward the lamination head 10. As shown in FIG. 10, after an end of the green sheet 1 is pressed on an end of the glass panel 4 by the lamination head 10 when aligning the glass panel 4 and the green sheet 1 , the aligning camera is raised. Then, as shown in FIG. 11 , after the lamination head 10 is raised and the hot roller 60 enters at the pressing position, by rotating the hot roller 60, the process of joining the green sheet 1 on the glass panel is started. The hot roller 60 rotates at the pressing position and has the green sheet 1 join to the glass panel 4, has the glass panel 4 and the green sheet 1 progress. As shown in FIG. 12, when joining process is completed, the hot roller 60 is raised and the knife is backward. After that, as shown in FIG. 13, the lamination apparatus 100 has returned to the stand-by state. In the lamination apparatus 100 according to the present invention, in the process that the green sheet 1 is joined to the glass panel, the components are aligned in order that the green sheet 1 provided from the material roller 20 and 20' is not bent to the opposite direction of winding. That is, as the direction the green sheet 1 in the state of wound at the material rollers 20 and 20' wound off and provided are provided for the table of the cutting unit, and is transmitted along with the table surface, and is provided to the lamination head 10. In other words, by maintaining the direction of wind-off, the curvature at the green sheet 1 is maintained within a certain range, reverse bending opposite to bending has not caused.
INDUSTRIAL APPLICABILITY As described above, the invention can prevent from causing the parting line on the green sheet 1 and uneven of plastic layer after combining with the glass panel (4) by preventing the green sheet from repeatedly bending. Also, according to the present invention, since the lower protection film of the green sheet is stripped right before pressed on the glass panel 4, even when the entry of glass is delayed, it can be avoided that the ceramic film layer part is opened in advance from being pressed unevenly. Also, according to the present invention, the margin management becomes easy by cutting in advance before lamination progression, whereas the variance of margin is large by the cutting of the green sheet in the conventional lamination apparatus. Although preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. Especially, according to the embodiment, the green sheet is laminated by lamination apparatus according to the invention, the invention can be applied to various kinds of films with a certain width, and it also is included in the range of the invention.

Claims

WHAT IS CLAIMED IS:
1. A green sheet lamination apparatus comprising: a material roller around which a green sheet is wound; a lamination head located on upper side of a glass panel for introducing the green sheet from the material roller to the upper side of the glass panel, and introducing and stripping a lower protection film attached to a bottom of the green sheet to the reverse direction to the proceeding direction of the green sheet; a retrieving roller winding and retrieving the lower protection film separated from the green sheet; a cutting unit located between the material roller and the lamination head for cutting the green sheet by the size of the glass panel; and a hot roller joining the green sheet to the upper surface of the glass panel by heating and pressing the green sheet.
2. The apparatus as claimed in claim 1 further comprising a horizontal table moving and locating the glass panel move at a certain position.
3. The apparatus as claimed in claim 2, wherein the green sheet, which is unwound and provided from the stroller, has not the opposite direction of bending variance which is in the situation wounded at the material roller until the lower protection film is stripped from the lamination head.
4. The apparatus as claimed in claim 2, wherein the lamination head comprises a vacuum plate absorbing the end of the green sheet, and a knife, the lower protection film extended over an end of the knife, helping the under protection film stripped from the green sheet as the retrieving roller winds and draws the under protection film.
5. The apparatus as claimed in claim 2 further comprising: an aligning camera installed on the upper side of the end of the lamination head so as to be moved up and down for sensing the position when the lamination head aligns the green sheet on the glass panel; and a controller moving the lamination head so as to correct the location of the lamination head by using image information sensed from the aligning camera.
6. The apparatus as claimed in claim 2, wherein the cutting unit comprises, a cutting table, on the upper surface of which the green sheet passes through with surface-contacting; a cutting head installed on the cutting table for cutting the green sheet by rotating; and a cutting head transmitting part for transmitting the cutting head on the cutting table.
7. The apparatus as claimed in claim 6, wherein the cutting head transmitting part includes a plurality of linear transmitting means for transmitting the cutting head to the horizontal direction and the vertical direction with respect to the upper surface of the cutting table.
PCT/KR2004/002077 2004-01-16 2004-08-18 Apparatus for laminating green sheet WO2005068196A1 (en)

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KR10-2004-0003331A KR100507583B1 (en) 2004-01-16 2004-01-16 Apparatus for Laminating Green Sheet

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US7229519B2 (en) * 2004-01-27 2007-06-12 Lg Electronics, Inc. Burning equipment for green sheet of plasma display panel and method of burning the same
CN1982053B (en) * 2005-12-14 2010-05-19 株式会社日立工业设备技术 Method for adhesion of film and apparatus thereof

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KR101857288B1 (en) 2011-08-26 2018-05-14 삼성디스플레이 주식회사 Methods and apparatus for peeling a donor film from a substrate
KR101256789B1 (en) * 2012-08-27 2013-04-19 주식회사 필옵틱스 Cutting unit for laminator
KR102247443B1 (en) * 2014-05-19 2021-05-03 엘지전자 주식회사 Apparatus for attaching the film
KR101694194B1 (en) * 2015-02-17 2017-01-09 주식회사 에스에프에이 Laminating apparatus for manufacturing functional film
CN105836200B (en) * 2016-05-20 2018-07-27 南通冠东模塑股份有限公司 laminator

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US7229519B2 (en) * 2004-01-27 2007-06-12 Lg Electronics, Inc. Burning equipment for green sheet of plasma display panel and method of burning the same
CN1982053B (en) * 2005-12-14 2010-05-19 株式会社日立工业设备技术 Method for adhesion of film and apparatus thereof

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