KR101537368B1

KR101537368B1 - System for forming patterned film having an apparatus for forming pattern on web

Info

Publication number: KR101537368B1
Application number: KR1020130057400A
Authority: KR
Inventors: 조선동
Original assignee: (주)피엔티
Priority date: 2013-05-21
Filing date: 2013-05-21
Publication date: 2015-07-16
Also published as: KR20140136834A

Abstract

Disclosed is a raw pattern forming apparatus for forming and discharging a concave-convex pattern on a raw film continuously supplied continuously without interruption, and a pattern film forming system having the same. The disclosed pattern forming apparatus includes a coating unit for coating a coating agent on one side of a fabric, a roller having a concavo-convex pattern formed on the outer circumferential surface thereof, and supporting the fabric so that the side coated with the coating material faces the outer circumferential surface of the fabric, A concave-convex roller for advancing the fabric in one direction, a concave-convex pattern of the concave-convex roller on the side coated with the coating agent when the raw material coated with the coating agent passes through the nip so as to form a nip, And a curing unit for forming a pattern film by curing the concavo-convex pattern before the cloth engraved with the concavo-convex pattern leaves the concavo-convex roller.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pattern film forming system having a fabric pattern forming apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a raw pattern forming apparatus for forming a fine concave-convex pattern on the surface of a raw material film and a pattern film forming system having the same.

For example, in many electronic devices such as a display device, a smart phone, and the like, a prism sheet used for a backlight unit of an LCD device has many fine irregular patterns formed thereon . According to a first conventional example for forming a concave-convex pattern on a raw film, it is possible to apply a coating agent for pattern formation to the raw film and a workpiece film on which a coating agent is applied by a concave- To form a pattern was progressed discontinuously, resulting in a very low productivity.

1 shows a main configuration of a device for forming a concave-convex pattern on a raw film according to a second conventional example. According to the second conventional example shown in Fig. 1, the concavo-convex roller 6 And the rollers 5 for supplying the raw film 1 are brought into close contact with each other to form a nip and the raw film 1 is fed to the nip and the coating agent 7 is fed into the rollers 6 The raw film 1 is successively cured by the curing unit 9 and cooled by the cooling roller 8 to form a concave-convex pattern on the raw film 1, Shaped pattern. However, even in the case of the second example, bubbles are generated in the process of transferring the coating agent 7 from the concavo-convex roller 6 to the fabric film 1, resulting in a high defective rate in the completed pattern film, The operation speed is slow and the productivity is lowered.

The present invention provides a raw pattern forming apparatus for forming and discharging a concave-convex pattern on a raw film continuously fed continuously without interruption, and a pattern film forming system having the same.

Further, the present invention provides an apparatus for forming a concave-convex pattern on a raw film, which comprises a raw pattern forming apparatus and a pattern film forming system including the pattern forming apparatus.

The present invention relates to an apparatus for forming a concavo-convex pattern on a fabric that is continuously supplied continuously without interruption, comprising: a coating unit for coating a coating agent on one side of a fabric; And a roller for supporting the fabric so that the side coated with the coating material faces the outer circumferential surface of the roller so as to form a nip which rotates to advance the fabric in one direction, A nip roller for closely adhering the fabric to the irregular roller so that the irregular pattern corresponding to the irregular pattern of the irregular roller is engraved on the side to which the coating agent is applied when the cloth coated with the coating agent passes through the nip; And a hardening unit for hardening the concavo-convex pattern to form a pattern film before the fabric having the concavo-convex pattern engages out of the concavo-convex roller A pattern forming apparatus for a fabric is provided.

The coating unit may include a slot die for applying the coating agent to the fabric by flowing the coating agent through a slot extending in the width direction of the fabric.

The curing unit may include a UV lamp that irradiates ultraviolet light to the fabric supported by the uneven roller.

The UV lamp may be configured to project ultraviolet light from the outside of the irregular roller toward the irregular lamp side.

The curing unit may include cooling means for cooling the fabric supported by the uneven roller.

The cooling means may include a cooling water channel formed inside the irregular roller so that the cooling water can pass through the irregular roller.

The pattern forming apparatus of the present invention further comprises a test lamp for irradiating the pattern film with visible light onto the pattern film so that the pattern film proceeding beyond the irregular roller can be visually inspected. ).

Wherein the nip roller is movable between a first position in which the nip roller is in contact with the rugged roller and a second position in which it is spaced from the rugged roller and the rugged roller has an operating position when the nip roller is in the second position And can be configured to be movable between a loading / unloading position.

The present invention also provides a fabric feeding device for continuously supplying a fabric without interruption, a method of forming a pattern film by forming a concave-convex pattern on one side of a fabric fed from the fabric feeding device, And a pattern film collecting device for collecting the pattern film that has passed through the heat treatment apparatus. The pattern film forming apparatus of the present invention comprises: a pattern forming apparatus for forming a pattern film on a substrate;

The pattern film forming system according to the present invention is characterized in that a pattern film forming system of the present invention is arranged between the far-end feeding device and the pattern forming device and, when supply delay occurs in the far- And a first accumulator for supplying the previously accumulated fabric to the pattern forming apparatus.

The pattern film forming system of the present invention is arranged between the heat treatment apparatus and the pattern film collecting apparatus, and when a collection object is generated in the pattern film collecting apparatus, a pattern film traveling path between the heat processing apparatus and the pattern film collecting apparatus The pattern accumulating device may further include a second accumulator for delaying the progress of the pattern film proceeding to the pattern film collecting device.

The pattern film forming system of the present invention may further include a protective film attaching device disposed between the heat treatment device and the pattern film collecting device and attaching the protective film to the concavo-convex pattern formed on the pattern film.

The heat treatment apparatus may include a UV irradiation unit for irradiating the pattern film with ultraviolet light and a heating unit for heating the pattern film.

In order to reduce the planarity occupied by the pattern film forming system, the thermal processing apparatus may be disposed on a layer different from the material supplying apparatus and the pattern film collecting apparatus.

According to the present invention, a coating agent is applied to a fabric, and while the fabric coated with the coating agent is supported by the corrugated rollers, pressing, curing, and cooling are performed to form a pattern. Accordingly, the defective operation due to bubble generation is reduced, and the productivity of the pattern forming operation is improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a main configuration of an apparatus for forming a concave-convex pattern on a raw film according to a conventional example.
2 is a configuration diagram showing a pattern film forming system according to an embodiment of the present invention.
Fig. 3 is an enlarged view of the pattern forming apparatus of Fig. 2. Fig.
4 is a view showing a state in which the irregular roller of Fig. 3 is moved to the attachment / detachment position.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. The terminology used herein is a term used to properly express the preferred embodiment of the present invention, which may vary depending on the intention of the user or operator or the custom in the field to which the present invention belongs. Therefore, the definitions of these terms should be based on the contents throughout this specification.

2 is an enlarged view of the pattern forming apparatus of FIG. 2, FIG. 4 is a cross-sectional view of the pattern forming apparatus of FIG. And FIG. Referring to FIG. 2, a pattern film forming system 20 according to an embodiment of the present invention includes a pattern film 11 having a concavo-convex pattern formed on one side of a raw cloth 12 continuously fed without interruption ) Is produced and collected. The pattern film forming system 20 includes a raw material supplying device 21, a pattern forming device 30, a heat treatment device 70, a protective film attaching device 76, a pattern film collecting device 85, a first accumulator, (27), and a second accumulator (80). Between each of the devices, the transport rollers guide the fabric 12 or the pattern film 11 to the next stage device.

The fabric feeding device 21 has a pair of far end unwinding rollers 22 and a rotating plate 24 for detachably supporting a pair of far end unwinding rollers 22. [ The far-end unwinding roller 22 loosens the roll 12 in the form of a roll and feeds it toward the pattern forming device 30. [ When all the raw materials 12 are discharged from one of the pair of raw material unwinding rollers 22, the rotating plate 24 rotates by a half turn and the other end of the original raw material 12 The starting end of the raw end 12 of one raw unwinding roller 22 is connected and the raw end 12 is continuously discharged from the other raw unwinding roller 22. The raw unwinding roller 22 from which the raw fabric 12 has been completely discharged is separated from the rotating plate 24 and a new raw unwinding roller 22 is supported on the rotating plate 24. [ In this way, the fabric 12 can be continuously supplied to the pattern forming apparatus 30 without interruption. However, the fabric feeder is not limited to the embodiment shown in FIG. 2, and various other structures are possible.

Referring to FIGS. 2 and 3, the pattern forming apparatus 30 is a device for forming a concavo-convex pattern on one side of a raw cloth 12 supplied in a row without interruption. The fabric 12 is supplied to the pattern forming device 30 via the first accumulator 27. The first accumulator 27 will be described later. The pattern forming apparatus 30 includes a dancer roller 55, a corrugating roller 31, a nip roller 45, a coating unit, a curing unit, and a test lamp 52 Respectively.

The dancer roller 55 supports the fabric 12 and moves left and right according to the tension change of the fabric 12 to appropriately maintain the tension of the fabric 12 supplied to the pattern forming apparatus 30 . The progress path of the raw material 12 from the dancer roller 55 to the concave roller 31 is guided by the plurality of guide rollers 58, 59, 60, 61, 62 before the pattern formation. The coating unit applies a coating agent 13a to one side of the raw fabric 12 before the raw fabric 12 enters the rugged roller 31. [ The coating unit includes a slot die for applying a coating agent 13a to the fabric 12 which flows upward through the slot 13 extending in the width direction of the fabric 12, (50). In Figure 3, the spacing between the slot die 50 and the fabric 12 is shown as spaced apart, but in practical applications the spacing may be closer.

The irregularity roller 31 supports the fabric 12 coated on one side with the coating agent 13a and rotates counterclockwise to advance the fabric 12 in the counterclockwise direction along its outer circumferential surface. Concave groove portions 33 and protrusions 34 are alternately arranged on the outer circumferential surface of the concave-convex roller 31 to form a concave-convex pattern 32 having a constant shape.

The nip roller 45 is brought into close contact with the outer peripheral surface of the rugged roller 31 so as to form a nip, and rotates clockwise as the rugged roller 31 rotates counterclockwise. The raw material 12 coated with the coating agent 13a passes through the nip between the rugged roller 31 and the nip roller 45 via the nip roller 45 and is supported on the outer peripheral surface of the rugged roller 31, 31 in the counterclockwise direction.

When the cloth 12 passes through the nip, the side to which the coating agent 13a is applied faces the outer peripheral surface of the rugged roller 31. [ Therefore, the pattern layer 13 is formed by pressing the side coated with the coating agent 13a through the nip by the concave-convex roller 31. The concave-convex pattern corresponding to the concave-convex pattern 32 on the outer circumferential face of the concave-convex roller 31 is engraved in the pattern layer 13. Concretely, the projection 15 corresponding to the shape of the concave groove portion 33 on the outer circumferential surface of the concave-convex roller 31 and the concave groove portion 14 corresponding to the shape of the convex portion 34 on the outer circumferential surface of the concave- (13).

The hardening unit forms the pattern film 11 by hardening the concavo-convex pattern formed on the pattern layer 13 before the raw material 12 on which the pattern layer 13 is formed leaves the uneven roller 31. The curing unit has a UV lamp 47 and cooling means for cooling the raw material 12 supported by the rugged roller 31. [ The UV lamp 47 irradiates ultraviolet light to the raw fabric 12 supported by the rugged roller 31 to accelerate the curing of the pattern layer 13 made of the coating agent 13a. The UV lamp 47 projects ultraviolet light UV from the outside of the concavo-convex roller 31 toward the concavo-convex lamp 31 side.

The cooling means includes a cooling water flow path (36) wired inside the uneven roller (31). Cooling water flows along the cooling water flow path 36 from the outside of the recessed and recessed rollers 31 to absorb heat from the recessed and recessed rollers 31 and then to the outside of the recessed and recessed rollers 31. Therefore, the pattern layer 13 of the fabric 12, which is in contact with the outer circumferential surface of the corrugated roller 31 and advances, is cooled, and contraction and hardening are promoted. The pattern layer 13 contracted and cured by the hardening unit is fixed firmly to the fabric 12 and is separated cleanly from the concavo-convex pattern 32 on the outer circumferential surface of the irregular roller 31 without leaving a remnant.

The pattern film 11 formed by fixing the pattern layer 13 to the fabric 12 is separated from the corrugated rollers 31 and guided to the heat treatment apparatus 70 by the guide rollers 64 and 65 after forming a plurality of patterns do. The inspection lamp 52 is provided with a plurality of light sources 53 such as fluorescent lamps and is provided with a pattern film (not shown) for visual inspection of the pattern film 11, 11 with a visible light. Similarly to the case where the doctor reads the X-ray picture on the back light board, the operator can visually check whether the pattern film 11 is defective by using the light of the inspection lamp 52.

3 and 4, when the nip roller 45 is always in close contact with the rugged roller 31, permanent deformation due to stress may occur. Therefore, when the pattern film forming system 20 is not operated The nip roller 45 can be spaced apart from the irregular roller 31 without being in close contact with it. The nip roller 45 is moved in the first position (see the dashed line in Fig. 4) in contact with the rugged roller 31 along the arrow AR1 and in the second position spaced apart from the rugged roller 31 ).

4) and the loading / unloading position (see FIG. 4) along the arrow AR2 when the nipping roller 45 is in the second position, See solid lines). Specifically, the uneven roller 31 is rotatably mounted on the roller supporting block 39, and the roller supporting block 39 is horizontally movable along the LM guide 38 extending in the horizontal direction. The operator can move to the attachment / detachment position when the irregularity roller 31 is inspected or repaired by his or her own human force. When the system 20 (see FIG. 2) is operated, the irregularity roller 31 is moved to the operation position Can be moved. On the other hand, the uneven rollers 31 can be configured to be movable between the operating position and the detachment / attachment position by the power of the motor 37, not by the worker's work force.

Referring again to FIG. 2, the pattern film 11 discharged from the pattern forming apparatus 30 passes through the heat treatment apparatus 70. The heat treatment apparatus 70 is a so-called " non-solvent type " apparatus which does not apply a chemical solvent to stabilize the pattern film 11 by heat treatment. The heat treatment apparatus 70 has a pair of UV irradiation units 74 and 75, and a heating unit 71 therebetween.

The pattern film 11 can not be regarded as being sufficiently cured such that the raw material 12 and the pattern layer 13 are completely integrated because the pattern film 11 has been cured for a short time before leaving the uneven roller 31 (see Fig. 3). The pair of UV irradiation units 74 and 75 irradiate the pattern film 11 with ultraviolet light (UV) to sufficiently cure the pattern layer 13. [ In the heating unit 71, the pattern film 11 is heated to a temperature higher than normal temperature for a sufficient time. This can be seen from the fact that the transfer path inside the heating unit 71 is considerably longer than the transfer path of the pair of UV irradiation units 74 and 75. The internal structure of the cured pattern layer 13 is stabilized through the heating process of the heating unit 71 and is stably fixed to the fabric 12 and integrated.

The protective film attaching device 76 attaches the protective film 17 to the concavo-convex pattern formed on the pattern film 11 that has passed through the heat treatment device 70, in other words, the surface of the pattern layer 13. The protective film 17 is supplied from the protective film supply unit 77. In Fig. 2, the protective film supply unit 77 in which the protective film 17 is wound in a roll form is disclosed, but the present invention is not limited thereto.

The pattern film 11 to which the protective film 17 is attached passes through the second accumulator 80 and is collected in the pattern film collecting device 85. The patterned film collecting device 85 is similar in structure to the previously described fabric feeder 21. Specifically, the pattern film collecting device 85 includes a pair of pattern film rewinding rollers 86 and a rotating plate 88 for detachably supporting a pair of rewinding rollers 86. The pattern film rewinding roller 86 winds the pattern film 11 flowing through the second accumulator 80 in a roll form. When the pattern film 11 is wound in one of the pair of pattern film rewinding rollers 86 at the maximum capacity, the rotating plate 88 rotates by a half turn to form a pattern toward the one pattern film rewinding roller 86 The film 11 is cut and its starting end is connected to another pattern film rewinding roller 86 and the pattern film 11 is newly wound on the other pattern film rewinding roller 86. [ The pattern film rewinding roller 86 wound up at the maximum capacity of the pattern film 11 is separated from the rotating plate 88 and a new pattern film rewinding roller 86 in which the pattern film 11 is not wound is wound around the rotating plate 88 . In this way, the pattern film 11 can be collected without stopping the operation in accordance with the production speed of the pattern film 11. However, the pattern film collecting apparatus is not limited to the embodiment shown in FIG. 2, and various other structures are possible.

The first accumulator 27 is disposed between the far-end feeder 21 and the pattern forming device 30. When a supply delay occurs in order to connect and supply the fabric 12 in the far-end feeder 21, The raw material 12 previously stored is supplied to the pattern forming apparatus 30 by shortening the travel path of the raw material 12 between the pattern forming apparatus 21 and the pattern forming apparatus 30. [ Accordingly, the pattern forming apparatus 30 can continuously perform the pattern layer forming operation at a constant speed without changing the traveling speed of the raw material 12. [

A plurality of upper rollers 28 and a plurality of lower rollers 29 are provided in the first accumulator 27 and the fabric 12 travels along a zigzag path between the rollers 28 and 29. When the supply delay of the raw fabric 12 is generated in the raw fabric feeder 21, the difference in vertical distance between the upper rollers 28 and the lower rollers 29 is narrowed so that the traveling path of the raw fabric 12 is shortened.

The second accumulator 80 is disposed between the protective film attaching device 76 and the pattern film collecting device 85. When the collection film is collected by the pattern film collecting device 85, The process advances the path of the pattern film 11 between the pattern film collecting devices 85 and delays the progress of the pattern film 11 proceeding to the pattern film collecting device 85. Accordingly, the heat treatment apparatus 70 and the protective film attaching apparatus 76 can continuously perform the operation at a constant speed without changing the advancing speed of the pattern film 11.

A plurality of upper rollers 81 and a plurality of lower rollers 82 are provided in the second accumulator 80 and the pattern film 11 advances along a zigzag path between the rollers 81 and 82 . When the collection film of the pattern film 11 described above is generated in the pattern film collecting device 85, a difference in vertical distance between the upper rollers 81 and the lower rollers 82 causes a path of travel of the pattern film 11 .

On the other hand, in the pattern film forming system 20, the heat treatment apparatus 70 occupies a much larger planar area than the other individual devices 21, 27, 30, 76, 80 and 85. Therefore, in order to reduce the planarity occupied by the pattern film forming system 20, the heat treatment apparatus 70 is disposed in two layers, and the other apparatuses 21, 27, 30, 76, 80, .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

11: pattern film 12: fabric
13: pattern layer 20: pattern film forming system
21: Fabric feeding device 30: Pattern forming device
31: rugged roller 45: nip roller
47: UV lamp 50: Slot die
70: heat treatment apparatus 85: pattern film collecting apparatus

Claims

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A fabric feeding device for continuously supplying the fabric without interruption;
A raw material pattern forming device for forming a pattern film by forming a concave-convex pattern on one side of a raw material supplied from the raw material feeding device;
A heat treatment apparatus for heat treating and stabilizing the pattern film discharged from the pattern forming apparatus; And
And a pattern film collecting device for collecting pattern films having passed through the heat treatment apparatus,
The pattern forming apparatus of the present invention includes a coating unit for applying a coating agent to one side of a fabric, a roller having a concave-convex pattern formed on the outer circumferential surface thereof, A concavo-convex roller, and a concave-convex roller which is in close contact with an outer circumferential surface of the concavo-convex roller to form a nip, and a side to which the coating agent is applied, And a curing unit for curing the concavo-convex pattern to form a pattern film before the fabric having the concavo-convex pattern engages with the convexo-concave pattern, and,
Wherein the nip roller is arranged to be movable between a first position in which the nip roller is in close contact with the rugged roller and a second position in which it is spaced from the rugged roller, the rugged roller is rotatably mounted on the roller support block, 2, the roller support block is disposed so as to be horizontally movable,
The heat treatment apparatus includes a pair of UV irradiation units for irradiating ultraviolet light onto the pattern film to cure the pattern layer and a pair of UV irradiation units interposed between the pair of UV irradiation units, And a heating unit for heating the patterned film to stabilize the internal structure of the pattern, wherein the UV irradiation unit, the heating unit, and another UV irradiation unit are arranged consecutively.

10. The method of claim 9,
Wherein when a supply delay occurs in the far-end feeding device, the far-end feeding path between the far-end feeding unit and the pattern forming device is shortened, Further comprising a first accumulator for supplying the pattern to the pattern forming apparatus.

10. The method of claim 9,
Wherein the pattern film collecting device is disposed between the heat treatment device and the pattern film collecting device and extends a pattern film traveling path between the heat treatment device and the pattern film collecting device when collection material is generated in the pattern film collecting device, Further comprising a second accumulator for delaying the progression of the pattern film to the apparatus.

10. The method of claim 9,
Further comprising a protective film attaching device disposed between the heat treatment device and the pattern film collecting device and attaching a protective film to the concavo-convex pattern formed on the pattern film.

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10. The method of claim 9,
Wherein the thermal processing apparatus is disposed in a layer different from the pattern supply apparatus and the pattern film collecting apparatus in order to reduce the planarity occupied by the pattern film forming system.