WO2016117971A1

WO2016117971A1 - Method for controlling roll-to-roll process

Info

Publication number: WO2016117971A1
Application number: PCT/KR2016/000741
Authority: WO
Inventors: 이장환; 김옥진; 김영진; 천태수; 최동권
Original assignee: 성안기계 주식회사
Priority date: 2015-01-22
Filing date: 2016-01-22
Publication date: 2016-07-28
Also published as: KR20160090929A; KR101798142B1

Abstract

The present invention relates to a method for controlling a roll-to-roll process. A method for controlling a roll-to-roll process according to one embodiment of the present invention, the method controlling a roll-to-roll process of a roll-to-roll process apparatus comprising a film processing unit for processing film and a film transport unit for supplying the film to the film processing unit and recovering the film therefrom, comprises the steps of: suspending the transport of film located in the film processing unit; calculating a register error value for the film from at least one first alignment mark provided on the film located in the film processing unit; aligning the film processing unit by means of the register error value and at least one second alignment mark provided on the film processing unit; transporting the film located in the film processing unit; and processing the film transported from the film processing unit.

Description

Roll to Roll Process Control Method

The present invention relates to a roll-to-roll process control method, and more particularly, to a roll-to-roll process that can improve the quality of the product produced through the roll-to-roll process by performing a register control for the film in the roll-to-roll processing apparatus in a simpler method It relates to a process control method.

In general, a roll-to-roll processing apparatus performs various kinds of processes on a film or web (hereinafter, referred to herein as a film) in a roll form. Means a device. The roll-to-roll processing apparatus is a film processing unit for performing various processes for the film and the film wound in the form of a roll to release the film to supply the film processing unit or the film from the film processing unit after the process of the film rolled back to recover the roll form The film feeder is configured.

As an example of a roll-to-roll processing apparatus, the roll-to-roll printing apparatus which forms various patterns on the film which is a to-be-processed object is mentioned. In particular, recent roll-to-roll printing apparatus has been in the spotlight with the development of the printed electronics technology for manufacturing electronic devices by printing a functional ink on a film.

As such, a roll-to-roll processing apparatus such as a roll-to-roll printing apparatus must sequentially perform a series of processes (for example, overlay printing) on a film having a flexible material. Due to deformation caused by external conditions, a register error occurs when a series of processes are performed, which is likely to cause a decrease in production quality. Therefore, in order to perform a series of processes using a roll-to-roll processing apparatus, accurate measurement of register errors and register control through these are essential.

To this end, the conventional roll-to-roll processing apparatus measures the register error in order to reduce the register error, and then controls the components provided in the film processing unit (for example, phase compensation of the printing roller), and transfers the film from the film conveying unit. Resistor control was performed through control by speed change, control by tension change acting on the film, and the like. However, in the conventional roll-to-roll processing apparatus, not only accurate calculation of the register error for the film is difficult, but also the problem that the register control is not made correctly due to the additional deformation of the film generated when performing the register control by feeding back the register error is caused. there was.

Accordingly, there is a need for a roll-to-roll process control method capable of improving the quality of a product produced through the roll-to-roll process by performing register control on a film in a roll-to-roll process apparatus in a simpler manner.

The present invention has been invented to improve the above problems, and the problem to be solved by the present invention is to calculate the register error value in the state of stopping the film before performing the process for the film, and align the position of the film process unit Then, by controlling the film to be carried out while the film is transported, the roll-to-roll process can improve the quality of the product produced by the roll-to-roll process by performing register control of the film in the roll-to-roll processing apparatus in a simpler method. It is to provide a process control method.

Technical problem of the present invention is not limited to those mentioned above, another technical problem that is not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the roll-to-roll process control method according to an embodiment of the present invention, the film processing unit is a process for the film is performed, the film is supplied to the film processing unit and the film is the film processing unit A roll-to-roll process control method of a roll-to-roll processing apparatus including a film conveying unit to recover from the process, the method comprising: stopping the conveyance of the film located in the film processing unit, and at least one film provided in the film processing unit Calculating a register error value for the film from a first alignment mark, and aligning the position of the film process unit by using the register error value and at least one second alignment mark provided in the film process unit. And transferring the film located in the film processing unit, and for the film transferred from the film processing unit. A characterized in that it comprises the step of performing.

In this case, the calculating of the register error value for the film may include photographing a shear alignment mark provided on a film positioned at a front end of the film processing unit among the at least one first alignment mark, and Photographing a rear end alignment mark provided on a film positioned at a rear end of the film processing unit among at least one first alignment mark, and using the positional deviation of the front alignment mark and the positional deviation of the rear alignment mark To calculate the register error value for the film located in the film processing unit.

The aligning of the film processing unit may include calculating an alignment position with respect to the at least one second alignment mark using the register error value, and driving the film processing unit to align the film processing unit. And moving to a location.

In addition, the film processing unit is characterized in that it moves to the alignment position spaced apart from the film.

On the other hand, the film process unit, a backing roller for supporting one surface of the film, and guides the transfer of the film before and after the process and a pattern for performing a printing process on the film supported by the backup roller and the at least one And a printing roller having a second alignment mark, wherein the printing roller moves to the alignment position while the backup roller is stopped.

Alternatively, the film processing unit may support a surface of the film and guide the transfer of the film before and after the process, a pattern for performing a printing process on the film supported by the backup roller, and the at least one. A screen having a second alignment mark formed thereon, and movable to be in contact with or spaced apart from the screen, and a scraper for applying ink to the screen and movable to be in contact with or spaced from the screen And a squeegee which is positioned adjacent to the scraper and transfers the ink applied to the screen onto the film to perform a printing process, wherein the screen moves to the alignment position with the backup roller stopped. Characterized in that.

On the other hand, the film conveying part is located adjacent to the film processing part, the unwinder part for supplying the film to the film processing part by releasing the film continuously, and positioned adjacent to the film processing part, the film The rewinder unit which continuously winds the film supplied after the process unit is finished, and is located between the unwinder unit and the film process unit, and reciprocates in a first direction to move the film supplied from the unwinder unit. The first film control unit for maintaining a constant feed and the second film control positioned between the film processing unit and the rewinder, and reciprocating along the second direction to maintain a constant feed of the film supplied to the rewinder unit And a first film adjusting part and a second film adjusting part reciprocating in the first direction and the second direction, respectively. And it is characterized in that to stop the feeding of the film located at the film hole government or transferring the film.

Specific details of other embodiments are included in the detailed description and the drawings.

According to the roll-to-roll process control method according to an embodiment of the present invention, the resist error value is calculated in the state in which the film is stopped before performing the process for the film, and the film is transported after aligning the position of the film process unit By controlling to perform the process for, by a simpler method it is possible to improve the quality of the product produced through the roll-to-roll process by performing the register control for the film in the roll-to-roll processing apparatus.

Further, according to the roll-to-roll process control method according to an embodiment of the present invention, by aligning the film processing unit in a state spaced from the film when aligning the position of the film processing unit, further deformation of the film generated when performing the register control By minimizing this, more accurate register control can be performed.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a view schematically showing the structure of a roll-to-roll processing apparatus according to an embodiment of the present invention.

2 is a flowchart illustrating a process of a roll-to-roll process control method of a roll-to-roll process apparatus according to an embodiment of the present invention.

3 is a flowchart illustrating a process of calculating a register error value for a film by a control unit of a roll-to-roll processing apparatus according to an embodiment of the present invention.

4 to 6 are diagrams showing an example in which the control unit of the roll-to-roll processing apparatus according to an embodiment of the present invention calculates a register error value for the film.

FIG. 7 is a flowchart illustrating a process of aligning a position of a film processing unit by using a register error value and a second alignment mark by a controller of a roll-to-roll processing apparatus according to an embodiment of the present invention.

8 is a diagram illustrating an example in which a control unit of a roll-to-roll processing apparatus according to an embodiment of the present invention aligns a position of a film processing unit by using a register error value and a second alignment mark.

9 is a view showing a state in which the film processing unit of the roll-to-roll processing apparatus according to an embodiment of the present invention performs a process for the film.

10 and 11 are views showing an example of performing a printing process after aligning the position of the film processing unit in the rotary screen printing apparatus which is an example of a roll-to-roll processing apparatus according to an embodiment of the present invention.

12 and 13 are views illustrating an example of performing a printing process after aligning a position of a film processing unit in a flat screen printing apparatus, which is another example of a roll-to-roll processing apparatus according to an embodiment of the present invention.

14 is a view showing an example of a film transfer unit provided in a roll-to-roll processing apparatus according to an embodiment of the present invention.

15 and 16 are views showing the operation of the film transfer unit shown in FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings such that those skilled in the art may easily implement the present invention.

In describing the embodiments, descriptions of technical contents which are well known in the technical field to which the present invention belongs and are not directly related to the present invention will be omitted. This is to more clearly communicate without obscure the subject matter of the present invention by omitting unnecessary description.

For the same reason, in the accompanying drawings, some components are exaggerated, omitted or schematically illustrated. In addition, the size of each component does not fully reflect the actual size. The same or corresponding components in each drawing are given the same reference numerals.

Hereinafter, the present invention will be described with reference to the drawings for explaining a roll-to-roll process control method according to embodiments of the present invention.

As shown in FIG. 1, the roll-to-roll processing apparatus 100 according to an embodiment of the present invention includes a film processing unit 110, a film transfer unit 120, a first camera 130, and a second camera 140. And a controller 150.

The film processing unit 110 may perform various processes such as a printing process for the film (F). The film process unit 110 may be provided with at least one according to the number of processes performed on the film (F). For example, in FIG. 1, the film processing unit 110 prints a first pattern (# 1) for printing a first pattern (not shown) on the film F, and a film on which the first pattern is printed ( The example comprised by the 2nd printing process part # 2 for printing a 2nd pattern (not shown) in F) is shown. 1 illustrates an example in which two first printing process units # 1 and a second printing process unit # 2 are provided side by side as an example of the film process unit 110 provided on the film transfer unit 120. , This is exemplary, the number and arrangement of the film processing unit 110 can be changed by any person skilled in the art. Specific structure and operation of the film processing unit 110 will be described later in detail with reference to FIGS. 9 to 12.

The film transfer part 120 may supply the film F to the film process part 110 and recover the film F that has been processed in the film process part 110. 1 illustrates a roll-to-roll transfer structure arranged in a line to supply or recover the film F to two film processing units 110 provided side by side. However, this is merely an example, and the arrangement of the film transfer unit 120 may be described. The shape can be changed by any person skilled in the art according to the number, arrangement, and the like of the film processing unit 110. Detailed structure and operation of the film transfer unit 120 will be described later in detail with reference to FIGS. 14 to 16.

The first camera 130 is positioned adjacent to the film processing unit 110, and the film F is positioned in the film processing unit 110 before the process of the film F is performed in the film processing unit 110. At least one first alignment mark provided in the photographing apparatus may be photographed. In addition, the second camera 140 is positioned adjacent to the film processing unit 110 and at least one provided in the film processing unit 110 before performing the process for the film F in the film processing unit 110. The second alignment mark can be taken. The first camera 130 and the second camera 140 may use a complementary metal-oxide semiconductor (CMOS) camera, a charge-coupled device (CCD) camera, or the like.

In FIG. 1, two first cameras 130 for photographing the first alignment mark are provided at the front and rear ends of the film processing unit 110, respectively, and a second camera 140 for photographing the second alignment mark. ) Shows an example in which one is provided on the upper portion of the film processing unit 110, but this is merely an example, and the number and installation positions of the first camera 130 and the second camera 140 may be determined by those skilled in the art. you can change it.

Meanwhile, the first alignment mark and the second alignment mark photographed by the first camera 130 and the second camera 140 may be used to align the position of the film processing unit 110 with respect to the film F. FIG. Can be. A method of aligning the position of the film processing unit 110 using the first alignment mark and the second alignment mark will be described later in detail with reference to FIGS. 9 to 12.

The controller 150 may control operations of the film processing unit 110, the film transfer unit 120, the first camera 130, and the second camera 140 constituting the roll-to-roll processing apparatus 100. For example, the controller 150 controls the film processing unit 110 using process data (for example, process speed) for performing a process for the film F, and the film processing unit 110 controls the film processing unit 110. The film feeder 120 is controlled by generating the feed data (tension acting on the film F, the rotational speed of the feed roller, etc.) according to the process data of the process, and the process for the film F in the film process part 110. The first camera 130 and the second camera 140 are controlled to photograph the first align mark and the second align mark before performing the operation, and register error values from the first align mark and the second align mark. By calculating the position of the film processing unit 110 can be aligned.

Hereinafter, referring to FIGS. 2 to 15, a roll-to-roll process control method of the roll-to-roll processing apparatus 100 according to an embodiment of the present invention configured as described above is as follows.

First, when the film F is transferred to the film processing unit 110 by the driving of the film transporting unit 120, the controller 150 controls the film transporting unit 120 to position the film located in the film processing unit 110 ( F) can be stopped (S210). An example in which the film transfer unit 120 stops the transfer of the film F will be described later in detail with reference to FIGS. 14 to 16.

In addition, the controller 150 may calculate a register error value for the film F from at least one first alignment mark provided in the film F positioned in the film processing unit 110 (S220). Here, the register error value means a positional deviation caused by deformation of the film F in each process when a plurality of processes are sequentially performed on the film F. FIG. For example, when the film processing unit 110 sequentially prints the first pattern and the second pattern on the film F, the film processing unit 110 may be formed on the film F on which the first pattern is printed. The register error value to be calculated when printing the two patterns means a deviation between the position where the first pattern is to be printed and the position where the first pattern is actually printed.

3 is a flowchart illustrating a process of calculating a register error value for a film by a controller of a roll-to-roll processing apparatus according to an embodiment of the present invention, and FIGS. 4 to 6 are roll-to-roll processes according to an embodiment of the present invention. It is a figure which shows the example in which the control part of an apparatus calculates the register error value with respect to a film.

As shown in FIG. 3, the controller 150 is a shear provided on the film F positioned at the front end of the film processing unit 110 among at least one first alignment mark provided on the film F. As shown in FIG. The alignment mark may be photographed (S221). That is, as shown in FIGS. 4 and 5, the controller 150 controls the first camera 131 positioned at the front end of the film processing unit 110 based on the conveying direction of the film F so that the film ( Among the at least one first alignment mark provided on F), the shear alignment mark M1 ′ provided on the film F positioned at the front end of the film processing unit 110 may be photographed.

In addition, the controller 150 may photograph the rear end alignment mark provided on the film F positioned at the rear end of the film process unit 110 among the at least one first alignment mark provided on the film F. FIG. There is (S222). That is, as illustrated in FIGS. 4 and 5, the controller 150 controls the first camera 132 positioned at the rear end of the film processing unit 110 based on the conveying direction of the film F so that the film ( Among the at least one first alignment mark provided on F), the rear end alignment mark M2 ′ provided on the film F positioned at the rear end of the film processing unit 110 may be photographed.

3 illustrates an example in which the controller 150 sequentially photographs the front alignment mark M1 ′ and the rear alignment mark M2 ′ through the

first cameras

131 and 132 in steps S221 and S222. However, the controller 150 may control the

first cameras

131 and 132 to photograph the front alignment mark M1 ′ and the rear alignment mark M2 ′ at substantially the same moment.

After the controller 150 captures the front end alignment mark M1 ′ and the rear end alignment mark M2 ′ through the

first cameras

131 and 132 positioned at the front and rear ends of the film processing unit 110 ( S221 and S222, using the position deviation of the front alignment mark M1 'and the position deviation of the rear alignment mark M2', register error values for the film F positioned in the film processing unit 110 are determined. It may be calculated (S223).

In FIG. 5, in the example of FIG. 1, two first printing process units # 1 and a second printing process unit # 2 sequentially display a first pattern (not shown) and a second pattern (not shown). At the time of printing, the front-end alignment marks M1 and M1 'and the rear-end alignment marks M2 and M2' are shown.

FIG. 5A shows the reference position M1 of the front alignment mark and the reference position M2 of the rear alignment mark, which are printed together with the first pattern in the first printing process unit # 1 of FIG. 1. 5 (b) shows the actual shear freezing taken before printing the second pattern in the second printing process unit # 2 together with the reference positions M1 and M2 of the front and rear alignment marks. The in mark M1 'and the rear-end alignment mark M2' are shown. In FIG. 5, the front alignment marks M1 and M1 ′ and the rear alignment marks M2 and M2 ′ are provided at diagonal positions along the conveying direction and the width direction of the film F. By way of example, the number and arrangement positions of the front and rear alignment marks M1 and M1 'and the rear alignment marks M2 and M2' can be changed by those skilled in the art.

As shown in FIG. 6, the register error values of the reference positions M1 and M2 of the first align mark and the actually printed first alignment marks M1 ′ and M2 ′ correspond to the transfer direction of the film F. It can be calculated by dividing the machine direction (MD) and the vertical direction (Cross direction, CD) of the feed direction. Fig. 6A shows the positional deviations CD1 and MD1 measured at the reference position M1 of the front end alignment mark and the actually printed front end alignment mark M1 ', and in Fig. 6B, the rear end is shown. The positional deviations CD2 and MD2 measured at the reference position M2 of the alignment mark and the actually printed rear alignment mark M2 'are shown. Therefore, the controller 150 uses the position deviations CD1 and MD1 measured at the front alignment marks M1 and M1 'and the position deviations CD2 and MD2 measured at the rear alignment marks M2 and M2'. In this way, a register error value for the film F positioned in the film processing unit 110 may be calculated.

Referring back to FIG. 2, the controller 150 calculates a register error value for the film F from the first alignment marks M1 ′ and M2 ′ (S220), and then register error value and the film process unit. The position of the film processing unit 110 may be aligned using at least one second alignment mark provided at 110 (S230).

FIG. 7 is a flowchart illustrating a process of aligning a position of a film processing unit by using a register error value and a second alignment mark by a control unit of a roll-to-roll processing apparatus according to an embodiment of the present invention, and FIG. 8 is a view of the present invention. It is a figure which shows the example in which the control part of the roll-to-roll processing apparatus which concerns on an Example aligns the position of a film process part using a register error value and a 2nd alignment mark.

In FIG. 8A, the second alignment mark M3 included in the film processing unit 110 is photographed using the second camera 140. In FIG. 8B, the register error value is illustrated. And moving the film process part 110 to the alignment position M3 'computed using the 2nd alignment mark M3.

As illustrated in FIG. 7, the controller 150 may photograph at least one second alignment mark M3 provided in the film processing unit 110 (S231). That is, as shown in FIG. 8A, the controller 150 controls the second camera 140 installed at a position adjacent to the film processing unit 110 to control the second camera 140. The alignment mark M3 can be photographed. 8 illustrates an example in which one second alignment mark M3 is formed at the center upper end of the film processing unit 110, but the number and arrangement positions of the second alignment marks may be changed by those skilled in the art. .

In addition, the controller 150 may use the register error values calculated from the at least one first alignment marks M1 ′ and M2 ′ to align the position M3 ′ with respect to the at least one second alignment mark M3. It can be calculated (S232). That is, the controller 150 uses the film process unit (eg, the register error value calculated from the front alignment marks M1 and M1 'and the rear alignment marks M2 and M2') and the second alignment mark M3. The alignment position M3 ′ with respect to 110 may be calculated.

In addition, the controller 150 may drive the film processing unit 110 to move the film processing unit 110 to the alignment position M3 ′ (S233). The film processing unit 110 may be linearly moved or rotated in a horizontal or vertical direction to move to the alignment position M3 ′. In FIG. 8B, the film processing unit 110 may be moved at a predetermined angle with respect to the center of the film processing unit 110. An example in which the rotation is moved by is shown.

Meanwhile, the film processing unit 110 may move to the alignment position M3 ′ in a state spaced apart from the film F. That is, since the film processing unit 110 moves to the alignment position M3 ′ in a non-contact state with the film F, movement and deformation of the film F do not occur due to the movement of the film processing unit 110. Precise register control is possible.

Referring back to FIG. 2, the controller 150 may arrange the positions of the film processing unit 110 (S230) and then transfer the film F positioned in the film processing unit 110 (S240). In addition, the controller 150 may perform a process for the film F transferred from the film processing unit 110 (S250).

As shown in FIG. 9, the control unit 150 moves the film processing unit 110 to the alignment position M3 ′, and then controls the film transfer unit 120 to position the film positioned in the film processing unit 110 ( F) may be transferred, and at the same time, the film processing unit 110 may be controlled to perform a process on the film F transferred to the film processing unit 110. In FIG. 9, an example of printing the second pattern P2 on the film F in the second printing process unit # 2 of FIG. 1 is illustrated. As shown in FIG. 9, the film processing unit 110 may be formed in the film processing unit (for example, printing of the third pattern) after the second printing processing unit # 2 in addition to the second pattern P2. First alignment marks M1 ″ and M2 ″ used for the alignment of 110 may be printed.

10 to 13, the structure and operation of the film processing unit 110 constituting the roll-to-roll processing apparatus 100 according to an embodiment of the present invention will be described.

FIG. 10 illustrates a state in which the structure and the position of the film processing unit 110 of the rotary screen printing apparatus are aligned, and FIG. 11 illustrates the printing process performed by the film processing unit 110 of the rotary screen printing apparatus. .

As shown in FIG. 10, the film processing unit 110 of the rotary screen printing apparatus may include a backup roller 111 and a printing roller 112.

The backup roller 111 may support one surface of the film F, and guide the transfer of the film F before and after the process. In addition, the printing roller 112 is disposed spaced apart from the backup roller 111, at least one pattern (not shown) for performing a printing process on the film (F) supported by the backup roller 111 The second alignment mark M3 may be formed. The printing roller 112 may perform a printing process on the film F transported in contact with the backup roller 111.

As shown in FIG. 10A, the printing roller 112 has the shear alignment marks M1 and M1 in a state where the conveyance of the film F is stopped (that is, the backup roller 111 is stopped). Linear movement or rotational movement in the horizontal or vertical direction to the alignment position M3 'calculated using the register error value calculated from') and the trailing alignment marks M2 and M2 'and the second alignment mark M3. Can be. At this time, as shown in FIG. 10B, the printing roller 112 is moved from the film F in a state where the conveyance of the film F is stopped (that is, the backup roller 111 is stopped). It can be moved to the alignment position M3 'while being spaced apart.

As such, after finishing the alignment of the printing roller 112, as shown in FIG. 11, the film processing unit 110 contacts the printing roller 112 on the film F and backs up with the printing roller 112. The printing process may be performed on the film F while rotating the roller 111 to transfer the film F. FIG.

FIG. 12 illustrates a state in which the structure and positions of the film processing unit 110 of the flat screen printing apparatus are aligned, and FIG. 13 illustrates a printing process performed by the film processing unit 110 of the flat screen printing apparatus. .

As illustrated in FIG. 12, the film processing unit 110 of the flat screen printing apparatus may include a backup roller 111, a screen 112, a scraper 113, and a squeegee 114.

The backup roller 111 may support one surface of the film F, and guide the transfer of the film F before and after the process. In addition, the screen 112 is disposed spaced apart from the backup roller 111, a pattern (not shown) and at least one agent for performing a printing process on the film (F) supported by the backup roller 111. 2 alignment mark M3 may be formed. The screen 112 may perform a printing process on the film F which is transported in contact with the backup roller 111.

As shown in FIG. 12B, the scraper 113 is disposed to be movable to be in contact with or spaced apart from the screen 112 and to apply ink to the screen 112. In addition, the squeegee 114 is positioned adjacent to the scraper 113 so as to be movable to be in contact with or spaced apart from the screen 112, and transfers ink applied to the screen 112 to the film F. Printing process may be performed.

As shown in FIG. 12A, the screen 112 has shear alignment marks M1 and M1 ′ in a state where the conveyance of the film F is stopped (that is, the backup roller 111 is stopped). ) Or a linear error or rotational movement in the horizontal or vertical direction to the register position value M3 'calculated using the register error value calculated from the rear alignment marks M2 and M2' and the second alignment mark M3. have. At this time, as shown in FIG. 12B, the screen 112 is spaced apart from the film F in a state where the conveyance of the film F is stopped (that is, the backup roller 111 is stopped). Can be moved to the alignment position M3 '.

As such, after finishing the alignment of the screen 112, as shown in FIG. 13A, the film processing unit 110 applies the ink onto the film F by using the scraper 113. As shown in FIG. 13B, the screen 112 is brought into contact with the film F and the backup roller 111 is rotated to transfer the film F while using the squeegee 114. The printing process can be performed on F).

Hereinafter, with reference to FIGS. 14 to 16, the structure and operation of the film transfer unit 120 constituting the roll-to-roll processing apparatus 100 according to an embodiment of the present invention will be described.

14 is a view showing an example of a film transfer unit provided in the roll-to-roll processing apparatus according to an embodiment of the present invention, Figures 15 and 16 is a view showing the operation of the film transfer unit shown in FIG.

As shown in FIG. 14, the film transfer part 120 may include an unwinder part 121, a rewinder part 122, a first film adjusting part 123, and a second film adjusting part 124. have.

The unwinder 121 is positioned adjacent to the film processing unit 110, and may release the film F continuously to supply the film F to the film processing unit 110. In addition, the rewinder 122 may be positioned adjacent to the film processing unit 110, and may continuously wind the film F supplied after the film processing unit 110 finishes the process. At this time, the control unit 150 is a film (F) of the feed rate of the film (F) supplied from the unwinder unit 121 to the film process unit 110 and the film F recovered from the film process unit 110 to the rewinder unit 122 Can be controlled to have a constant feed rate.

The first film adjusting unit 123 is positioned between the unwinder unit 121 and the film processing unit 110, and reciprocates along the first direction so as to supply the film F from the unwinder unit 121. The transfer can be kept constant. In addition, the second film adjusting part 124 is positioned between the film processing part 110 and the rewinder part 122, and the second film adjusting part 124 is reciprocated along the second direction to provide the rewinder part 122. The transfer can be kept constant. In this case, the control unit 150 is a film (F) in which the first film control unit 123 and the second film control unit 124 reciprocate in the first direction and the second direction, respectively, and are located in the film processing unit 110. ) May be stopped or the film F may be transported.

As shown in FIG. 14, the first film adjusting unit 123 may be formed in a first direction (eg, to maintain a constant transfer of the film F between the unwinder 121 and the film processing unit 110. For example, the first driving roller 123a reciprocating in the vertical direction perpendicular to the conveying direction of the film F, and the pair of first guide rollers on both sides of the first driving roller 123a. 123b and 123c. In addition, the second film adjusting unit 124 may have a second direction (eg, the film F) in order to maintain a constant transfer of the film F between the film processing unit 110 and the rewinder unit 122. And a pair of

second guide rollers

124b and 124c on both sides of the second driving roller 124a reciprocating in the up and down direction perpendicular to the feeding direction of the second driving roller 124a. Can be.

Meanwhile, in FIG. 14, the first film control unit 123 and the second film control unit 124 are implemented in the same structure. However, the first film control unit 123 and the second film control unit may be used as necessary. 124 may be implemented in different structures.

On the other hand, between the unwinder 121 and the first film control unit 123, between the first film control unit 123 and the film process unit 110, the film process unit 110 and the second film control unit A plurality of

transfer rollers

125 and 126 for guiding the transfer of the film F may be provided between the second film adjusting unit 124 and the rewinder unit 122.

As described above, in order to stop the transfer of the film F located in the film processing unit 110 to align the position of the film processing unit 110, as shown in FIG. The first driving roller 123a of the first film adjusting part 123 does not send a portion of the film F supplied from the unwinder part 121 to the film processing part 110 without pulling it in the first direction (lower) Direction), and the second film adjusting unit 124 to compensate for the film F which is not supplied from the film processing unit 110 by the second driving roller 124a of the second film adjusting unit 124. The film F, which is pulled by the second driving roller 124a of the s), may be released and moved in the second direction (upper direction) to supply the rewinder unit 122.

On the contrary, in order to transfer the film F positioned in the film processing unit 110 and perform a process for the film F after aligning the position of the film processing unit 110, as shown in FIG. 16, After finishing the process for the film F in the film processing unit 110, the first drive roller 123a of the first film adjusting unit 123 is pulled and slowed down when the process for the film F is performed. (F) is moved in the first direction (upper direction) to release and supply to the film processing unit 110, the second drive roller 124a of the second film adjusting unit 124 from the film processing unit 110 A portion of the film F to be fed can be moved in the second direction (lower direction) to pull and slow it down without sending it to the rewinder.

Meanwhile, in the present invention, a roll-to-roll printing apparatus for performing a printing process on the film F of the roll-to-roll processing apparatus 100 is described as an example, but the scope of application of the present invention is not limited thereto, and the present invention is a roll Any device that performs a two-roll process can be applied to various processes and technical fields.

On the other hand, in the present specification and drawings have been described with respect to preferred embodiments of the present invention, although specific terms are used, it is merely used in a general sense to easily explain the technical details of the present invention and to help the understanding of the invention, It is not intended to limit the scope of the invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention can be carried out in addition to the embodiments disclosed herein.

The present invention relates to a roll-to-roll process control method, and more particularly, to a roll-to-roll process that can improve the quality of the product produced through the roll-to-roll process by performing a register control for the film in the roll-to-roll processing apparatus in a simpler method It is applicable to the technical fields related to process control systems and roll-to-roll process control methods.

Claims

In the roll-to-roll process control method of the roll-to-roll processing apparatus comprising a film process unit for performing a process for the film, and a film conveying unit for supplying the film to the film process unit and recovering the film from the film process unit,

Stopping the transfer of the film located in the film processing section;

Calculating a register error value for the film from at least one first alignment mark provided on the film positioned in the film processing unit;

Aligning the position of the film process unit by using the register error value and at least one second alignment mark provided in the film process unit;

Transferring a film located in the film processing unit; And

Roll to roll process control method comprising the step of performing a process for the film transferred from the film processing unit.
The method of claim 1,

Computing the register error value for the film,

Photographing a shear alignment mark provided on a film positioned at a front end of the film processing unit among the at least one first alignment mark;

Photographing a rear end alignment mark provided on a film positioned at a rear end of the film processing unit among the at least one first alignment mark; And

And calculating the register error value for the film located in the film processing unit by using the positional deviation of the front alignment mark and the positional deviation of the rear alignment mark. .
The method of claim 1,

Aligning the position of the film processing unit,

Photographing the at least one second align mark;

Calculating an alignment position with respect to the at least one second alignment mark using the register error value; And

And driving the film processing unit to move the film processing unit to the alignment position.
The method of claim 3, wherein

And the film processing unit moves to the alignment position in a state spaced apart from the film.
The method of claim 4, wherein

The film process unit,

A backup roller which supports one side of the film and guides the transfer of the film before and after the process; And

A printing roller having a pattern for performing a printing process on the film supported by the backup roller and the at least one second alignment mark,

And the printing roller moves to the alignment position while the backup roller is stopped.
The method of claim 4, wherein

The film process unit,

A backup roller which supports one side of the film and guides the transfer of the film before and after the process;

A screen having a pattern for performing a printing process on the film supported by the backup roller and the at least one second alignment mark;

A scraper disposed to be movable to be in contact with or spaced from the screen, the scraper applying ink to the screen; And

A squeegee positioned to be adjacent to the scraper so as to be in contact with or spaced apart from the screen and transferring the ink applied to the screen to the film to perform a printing process,

And said screen moves to said alignment position while said backup roller is stationary.
The method of claim 1,

The film transfer unit,

An unwinder unit positioned adjacent to the film process unit and supplying the film to the film process unit by releasing the film continuously;

A rewinder unit positioned adjacent to the film process unit and continuously winding the film supplied after the process is completed in the film process unit;

A first film control unit positioned between the unwinder unit and the film process unit and reciprocating along a first direction to maintain a constant feed of the film supplied from the unwinder unit; And

Located between the film processing unit and the rewinder unit, including a second film control unit for reciprocating along the second direction to maintain a constant transfer of the film supplied to the rewinder unit,

The first film control unit and the second film control unit reciprocating in the first direction and the second direction, respectively, characterized in that to stop the transfer of the film located in the film processing unit or to convey the film Roll to roll process control method.