KR20230104169A - Method for manufacturing sheet-like products, sheet-like products, discs and intermediates - Google Patents

Abstract

(Problem) To provide a method for manufacturing a sheet-like product capable of contributing to finding out the cause when an abnormality occurs in a sheet-like product and improving the product ratio of the sheet-like product.
(Solution) In the present invention, a long disk S1 wound into a roll is drawn out, conveyed, and cut, or a long disk S1 wound into a roll is drawn out and conveyed to cut a large sheet-like intermediate body, A method for producing a plurality of sheet-like products (S2) by cutting an intermediate body, wherein a first marking (M1) is marked at a position where a defect (F) detected by inspecting a master is present on a master Step (ST1) and a second marking step (ST2) of marking a second mark (M2) indicating positional information on the disk on the disk or a plurality of sheet-like products, in the second marking step , The original sheet is marked with second marks so that a plurality of second marks exist on each of the plurality of sheet-like products after cutting.

Description

Method for manufacturing sheet-like products, sheet-like products, discs and intermediates

The present invention relates to a method for producing a sheet-like product such as a polarizing film or retardation film, a sheet-like product manufactured using this production method, and a raw material and intermediate for producing this sheet-like product. In particular, the present invention provides a method for producing a sheet-like product, a sheet-like product, a raw material and an intermediate body capable of contributing to finding out the cause when an abnormality such as a defect occurs in a sheet-like product and contributing to an improvement in the product ratio of the sheet-like product. It is about.

Conventionally, sheet-like products such as polarizing films and retardation films are produced by drawing out, transporting, and cutting a long disk wound into a roll shape, or by drawing out and conveying a long disk wound into a roll shape to form a large sheet-like intermediate product. is cut out and this intermediate body is cut to manufacture as a plurality of sheet-like products. And optical display devices, such as a liquid crystal display device, are manufactured by bonding each manufactured sheet-like product to optical display units, such as a liquid crystal panel.

Here, if it is possible to know where the sheet-like product after being bonded to the optical display unit was located on the disk before cutting or the disk before cutting out the intermediate body, it is possible to detect abnormalities such as defects in the sheet-like product. It is possible to contribute to finding out the cause and improving the product ratio of sheet-like products.

For this reason, for example, Patent Literature 1 proposes a method of marking a mark indicating positional information on a master before cutting.

Specifically, in Patent Literature 1, positional information (patent In Document 1, a method of marking a mark indicating roll information (in Patent Document 1, roll information holding means) is proposed (for example, see paragraphs 0131 to 0133 of Patent Document 1).

According to the method described in patent document 1, it is thought that it is possible to contribute to the investigation of the cause when an abnormality arises in a sheet-like product and the improvement of the product ratio of a sheet-like product.

On the other hand, as described in Patent Literature 2, a method of marking a mark at a position where a defect detected by inspecting a disc before cutting is also conventionally widely practiced (e.g., paragraph of Patent Literature 2). 0051 to 0053).

As described in Patent Literature 1, a method of marking a mark indicating positional information on the original sheet of a sheet-like product with respect to the original disc, and as described in Patent Literature 2, a defect detected by inspecting the original disc exists at a position If the method of marking marks is used together, since the position where the defect exists cannot be controlled, there is a possibility that both marks overlap and mark on the master. If both marks overlap, the mark representing the positional information cannot be read, and there is a risk that it may not be possible to contribute to finding out the cause when an abnormality occurs in the sheet-like product or improving the product ratio of the sheet-like product.

This problem similarly arises when a method of marking a mark indicating positional information on the original sheet product after cutting is used in combination with a method of marking a mark at a position where a defect detected by inspecting the original sheet exists. can

Japanese Unexamined Patent Publication No. 2009-294645 Japanese Unexamined Patent Publication No. 2005-114624

The present invention has been made in order to solve the problems of the prior art as described above, and for a disc before cutting into a sheet-like product or a disc before cutting an intermediate body, a mark is placed at a position where a defect detected by inspecting the disc exists. Even if the marking step is used in combination with the marking step of marking a mark indicating positional information in the original disk on the disk before cutting into sheet-like products, the disk before cutting out the intermediate body, or the sheet-like product after cutting, It is an object of the present invention to provide a method for producing a sheet-like product, a sheet-like product, a raw material, and an intermediate body that can contribute to identifying the cause when an abnormality occurs in a sheet-like product and improving the product ratio of the sheet-like product.

In order to solve the above problems, the present invention draws out, conveys and cuts a long disk wound into a roll shape, or draws out and conveys a long disk wound into a roll shape and cuts out a large sheet-like intermediate body, A method for producing a plurality of sheet-like products by cutting, comprising: a first step at a location where a defect detected by inspecting the original disk exists in the original disk before cutting, the intermediate body before cutting out, or the intermediate body; A first marking step of marking a mark, and a second indicating positional information on the master for the master before cutting, the intermediate before cutting out the master, the intermediate, or the plurality of sheet-like products after cutting. and a second marking step of marking 2 marks, wherein in the second marking step, the master before cutting and the intermediate body are cut so that a plurality of second marks are present on each of the plurality of sheet-like products after cutting. A method for producing a sheet-like product in which the second mark is marked on the raw material before cutting, the intermediate body, or the plurality of sheet-like products after cutting is provided.

According to the present invention, a first marking step of marking a first mark at a position where a defect detected by inspecting a disk before cutting, a disk before cutting an intermediate body, or an intermediate body, and a disk before cutting, The second marking step of marking the second mark indicating the positional information in the original film is used in combination with the raw material before the intermediate body is cut out, the intermediate body, or a plurality of sheet-like products after cutting, but in the second marking process, Marking is performed so that a plurality of second marks are present on each of the plurality of sheet-like products after cutting (ie, not singular, but a plurality of second marks are present for each sheet-like product). For this reason, the possibility that the first mark overlaps with all of the plurality of second marks is greatly reduced. Therefore, by reading the 2nd mark (the 2nd mark which does not overlap with the 1st mark) marked on each sheet-like product after cutting, it is possible to investigate the cause when an abnormality occurs in the sheet-like product and to improve the product ratio of the sheet-like product. it is possible to contribute

In the present invention, "positional information on the master" indicated by the second mark means information including at least the position of the master in the conveying direction. The position in the conveying direction of the master may be indicated by the distance from the tip in the conveying direction of the disk (downstream end in the conveying direction), or may be indicated by a number assigned sequentially according to the distance from the tip in the conveying direction of the disk. The "positional information on the master" indicated by the second mark may include a position in the width direction (direction orthogonal to the conveyance direction) of the master in addition to the position in the transport direction of the disk. Further, the second mark may indicate information related to a master for identifying a plurality of masters from each other. In addition, other auxiliary information may be indicated in the second mark.

In the present invention, the positional information indicated by the plurality of second marks marked on each sheet-like product may be the same positional information (for example, information on the center position of each sheet-like product), or may be different positional information ( For example, information on the position where each second mark is marked) may be used.

In the present invention, the first mark and the second mark may be marked using ordinary colored ink or transparent ink described later, or may be marked by laser engraving.

Preferably, in the second marking step, the second marks are set such that positions of the plurality of second marks in each of the plurality of sheet-like products after cutting are different from each other in the width direction of the master. mark

According to the preferred method described above, defects periodically occur along the conveying direction of the original due to, for example, a defect in the nip roller or the like that conveys the original (therefore, the first mark periodically occurs along the conveying direction of the original). marked), since the positions of the plurality of second marks in each sheet-like product include being different from each other with respect to the width direction (direction orthogonal to the conveying direction) of the master, the first mark and all of the plurality of marks The possibility that the second marks overlap is greatly reduced.

As the second mark, a one-dimensional code (bar code) or a two-dimensional code can be exemplified. As the two-dimensional code, DataMatrix (registered trademark) and QR code (registered trademark) can be exemplified.

Preferably, in the second marking step, when marking the second mark on the master before cutting or on the master before cutting out the intermediate body, the master is not overlapped with a predetermined cutting line of the master. The second mark is marked.

According to the preferred method described above, in each sheet-like product after cutting, a plurality of second marks can be reliably marked.

Preferably, in the first marking step, the first mark is marked using transparent ink, and/or, in the second marking step, the second mark is marked using transparent ink.

In the preferred method described above, the "transparent ink" is an ink that cannot be visually recognized by the human eye under normal lighting, and becomes fluorescently visible by irradiation with light of a specific wavelength. As the transparent ink, a UV ink that emits fluorescence by irradiating ultraviolet light can be exemplified.

According to the preferred method described above, since the first mark and/or the second mark are marked using transparent ink, the first mark and/or the second mark become invisible under normal lighting, and the appearance of the sheet-shaped product It has the advantage of not damaging the .

Preferably, in the second marking step, the second marks are marked such that positions of the second marks in the plurality of sheet-like products after cutting with respect to the cutting line are different from each other. .

In the preferred method described above, "including that the position of the second mark in the plurality of sheet-like products after cutting with respect to the cutting line is different from each other" among the plurality of sheet-like products after cutting Positions of a plurality of second marks (positions based on the cutting target line) in any one sheet-like product selected from , and positions of a plurality of second marks (scheduled to be cut) in any other sheet-shaped product selected from position relative to the line), the case where the second mark in another sheet-like product does not exist at the same position as any of the plurality of second marks in one sheet-like product means there is

According to the preferred method described above, when a plurality of sheet-like products are stacked and used, for example, when the second marks in each sheet-like product overlap, there is a concern that dents may occur in the overlapping portion. has the advantage of being able to reduce

In the present invention, for example, the first mark is composed of a plurality of dot-shaped marks aligned in the conveying direction of the master.

And, for example, at least one of the plurality of dot-shaped marks constituting the first mark becomes the second mark. In particular, when all of the plurality of dot-shaped marks constituting the first mark are used as the second marks, it is also possible to use the marking device for performing the first marking step as the marking device for performing the second marking step. .

In order to solve the above problems, the present invention cuts out a large sheet-like intermediate body by drawing out, conveying and cutting a long disk wound into a roll shape, or by drawing out and conveying a long disk wound into a roll shape, By cutting the intermediate body, as a sheet product manufactured in multiple numbers, a first mark is marked at a position where a defect detected by inspecting the original is present, and a plurality of second marks indicating positional information in the original are marked. It is also provided as a sheet-like product.

Furthermore, in order to solve the above problems, the present invention is a long disk wound into a roll shape for manufacturing a plurality of sheet-like products by drawing out, conveying and cutting, and the defect detected by inspecting the disk is located at a position. 1 mark is marked, and the 2nd mark which shows positional information in the said master is marked, and the said 2nd mark is so that a some said 2nd mark exists in each of the said some sheet-like product after cutting. Also available as marked discs.

Further, in order to solve the above problems, the present invention is a large sheet-like intermediate for producing a plurality of sheet-like products by drawing out, conveying, cutting, and cutting a long disk wound into a roll shape, and detecting the disk by inspecting the disk. A first mark is marked at the position where the defective defect exists, and a second mark indicating positional information in the master is marked, and a plurality of second marks are applied to each of the plurality of sheet-like products after cutting. In order to exist, it is also provided as an intermediate marked with the second mark.

According to the present invention, with respect to a master before cutting into a sheet-like product or a master before cutting out an intermediate, a step of marking a mark at a position where a defect detected by inspecting the master, and indicating positional information in the master Even when a marking process for marking a mark is used in combination, it is possible to contribute to finding out the cause when an abnormality occurs in sheet-like products and improving the product ratio of sheet-like products.

1 is a diagram showing a schematic configuration of a manufacturing apparatus for carrying out a method for manufacturing a sheet-like product according to an embodiment of the present invention.
Fig. 2 is a flowchart showing a schematic sequence of a manufacturing method according to an embodiment of the present invention.
Fig. 3 is an explanatory diagram for explaining the state of a disk and a sheet-like product in a manufacturing method according to an embodiment of the present invention.
FIG. 4 is a diagram explaining a modified example of the second marking step ST2 shown in FIG. 2 .
FIG. 5 is a diagram explaining a modified example of the first marking step ST1 shown in FIG. 2 .
Fig. 6 is a diagram showing a schematic configuration of a manufacturing apparatus for carrying out a method for manufacturing a sheet-like product according to a modified example of the present invention.

Hereinafter, with appropriate reference to the accompanying drawings, in a method for manufacturing a sheet-like product according to an embodiment of the present invention, a first mark is marked on a master before cutting, and a second mark is marked on a master before cutting. A case is explained as an example.

Examples of the sheet-like product manufactured by the manufacturing method according to the present embodiment include a polarizing film, a retardation film, a visual compensation film, a brightness improving film, and a laminated film obtained by laminating two or more types of these films. . Since the structure of each film is known, its detailed description is omitted here.

1 is a diagram showing a schematic configuration of a manufacturing apparatus for carrying out a method for manufacturing a sheet-like product according to the present embodiment. In FIG. 1, arrow X represents the conveyance direction (horizontal direction) of master S1 for manufacturing sheet-like product S2, and arrow Y represents the width direction (horizontal direction orthogonal to the conveyance direction) of master S1. , Arrow Z means the normal direction (vertical direction) of the surface of the disc S1, respectively.

As shown in FIG. 1, the manufacturing apparatus 100 of this embodiment includes the inspection apparatus 1, the 1st marking apparatus 2, the 2nd marking apparatus 3, the cutting apparatus 4, and control Equipped with a device (5). The control device 5 is electrically connected to the inspection device 1 , the first marking device 2 , the second marking device 3 and the cutting device 4 . Moreover, the manufacturing apparatus 100 of this embodiment is provided with feed-out roller R1, nip roller R2, and conveyor R3.

The manufacturing apparatus 100 of this embodiment feeds out the elongated disk S1 wound in roll shape by the feed roller R1, conveys it in the X direction by nip roller R2, conveyor R3, etc., and cutting device It is an apparatus which cuts by (4) and manufactures several sheet-like product S2.

The inspection device 1 is a device that detects defects existing in the master S1 by inspecting the master S1 before cutting. The inspection device 1 shown in FIG. 1 is disposed on one side of the Z direction with respect to the master S1 (below the master S1 in the example shown in FIG. 1 ), and emits light toward the master S1. (11) and disposed on the other side of the Z direction with respect to the master S1 (above the master S1 in the example shown in FIG. 1), and receiving light transmitted through the master S1 to form an image (image pickup). By applying known image processing, such as binarization, which extracts a pixel area having a different luminance value from another pixel area, to the imaging means 12 that generates a transmission image, and the transmission image input from the imaging means 12, An image processing means 13 for detecting defects is provided. In this embodiment, the control device 5 also functions as the image processing means 13 of the inspection device 1, but it is also possible to provide the image processing means 13 separately from the control device 5.

In addition, as the inspection device 1, as described above, it is not limited to the configuration of detecting defects based on the transmission image, and by arranging a light source and imaging means on one side in the Z direction with respect to the master S1, It is also possible to adopt a configuration for detecting defects based on the reflected image.

Further, when the master S1 (sheet-shaped product S2) is a polarizing film, as the inspection device 1, a light source and a polarizing filter for inspection are disposed on one side of the Z direction with respect to the master S1, Imaging means is disposed on the other side in the Z direction with respect to the master S1, or a light source is disposed on one side in the Z direction with respect to the master S1, and inspection is performed on the other side in the Z direction with respect to the master S1 It is also possible to employ a structure in which a defect is detected based on a cross Nicols image generated by arranging a polarizing filter and imaging means for use.

In addition, as the inspection device 1, it is also possible to employ a structure in which a defect is detected by combining two or more images of a transmission image, a reflection image, and a cross nicol image.

The first marking device 2 is a device that marks a mark (first mark) on the original S1 before cutting at a position where a defect detected by inspecting the original S1 with the inspection device 1 or the like exists. . Specifically, by inspecting the master S1 by the inspection device 1 or the like, the position where the detected defect exists is recognized by the control device 5, and the control device 5 controls the first marking device 2. By doing so, the first mark is marked at the position where the defect exists.

The first marking device 2 of the present embodiment is an inkjet marking device using transparent ink (specifically, UV ink), and by ejecting transparent ink from a plurality of nozzles arranged along the Y direction, It is a configuration that marks the mark. However, as the first marking device 2, it is also possible to adopt a configuration in which marking is performed by an inkjet method using a normal colored ink or a configuration in which marking is performed by laser engraving. In addition, in the case of using ink, it is also possible to employ a configuration in which marking is not limited to the inkjet method, but by a pen method. Since the specific configuration of these marking devices is known, the detailed description thereof is omitted here.

The second marking device 3 is a device for marking a mark (second mark) indicating positional information in the master S1 on the master S1 before cutting. Specifically, when the control device 5 controls the 2nd marking device 3, the 2nd mark is marked so that a some 2nd mark may exist in each of the some sheet-like product S2 after cutting.

Like the first marking device 2, the second marking device 3 of the present embodiment is an inkjet marking device using transparent ink (specifically, UV ink), and a plurality of marking devices arranged along the Y direction. It is a structure in which the 2nd mark is marked by ejecting transparent ink from a nozzle. However, as the second marking device 3, it is also possible to adopt a configuration in which marking is performed by an inkjet method using a normal colored ink or a configuration in which marking is performed by laser engraving.

The cutting device 4 is a device that manufactures a plurality of sheet-like products S2 by cutting the master S1 by known processing methods such as blanking processing and laser processing. Specifically, when the control device 5 controls the cutting device 4, the master S1 is cut along a predetermined cutting target line.

Hereinafter, a manufacturing method according to the present embodiment using the manufacturing apparatus 100 having the above structure will be described.

Fig. 2 is a flow diagram showing a schematic sequence of the manufacturing method according to the present embodiment. As shown in Fig. 2, the manufacturing method according to the present embodiment includes a first marking step (ST1) and a second marking step (ST2). Further, the manufacturing method according to the present embodiment includes a cutting step (ST3) and a recovery step (ST4).

3 : is explanatory drawing explaining the state of the master S1 and sheet-like product S2 in the manufacturing method by this embodiment. Fig. 3(a) is a diagram schematically showing the state of the master S1 immediately after performing the first marking step ST1. Fig. 3(b) is a diagram schematically showing the state of the master S1 immediately after performing the second marking step ST2. Fig. 3(c) is a diagram schematically showing the state of the master S1 (sheet-like product S2) immediately after performing the cutting step (ST3). Fig. 3(d) is a diagram schematically showing the state of the sheet-like product S2 in the process of executing the collection step (ST4).

Hereinafter, each process (ST1-ST4) is demonstrated in order.

<First marking process (ST1)>

As shown in Fig. 3(a), in the first marking step ST1, the defect F detected by inspecting the master S1 with respect to the master S1 before cutting (in Fig. 3(a) for convenience) , any defect F is shown in a star shape), the first mark M1 is marked by the first marking device 2 at the location where the defect F exists. The first mark M1 of the present embodiment is a plurality of circular dot-shaped marks that line up in the transport direction (X direction) of the master S1. More specifically, the first mark M1 of the present embodiment is a pattern composed of a plurality of circular dot-shaped marks aligned in the conveying direction (X direction) of the master S1, with the defect F interposed between the master ( They are lined up in pairs in the width direction (Y direction) of S1). The length (X-direction dimension) of each pattern determined by the number of dot-like marks is determined according to the length (X-direction dimension) of the defect F, for example. However, the present invention is not limited to this, and various types of marks can be employed as the first mark M1 as long as they are marked at the position where the defect F exists.

Control device 5 (image processing means 13) constituting inspection device 1 when marking the first mark M1 for the defect F detected by inspection by inspection device 1 can recognize the position (XY coordinates) of the defect F in the transmission image. Therefore, for example, the control device 5 determines the position (X coordinate) of the defect F in the recognized transmission image and the distance between the inspection device 1 and the first marking device 2 in the X direction. Based on the conveyance amount of the master (S1) measured by (L1) and an encoder (not shown) attached to the nip roller (R2), the detected defect (F) reaches the first marking device (2) timing can be calculated. And, for example, the control device 5 determines the position (Y coordinate) of the defect F in the recognized transparent image at the timing when the detected defect F reaches the first marking device 2. The first marking device 2 is controlled so that transparent ink is ejected from the corresponding nozzle of the first marking device 2 . As a result, the first mark M1 is marked at the position where the defect F exists.

Further, in the first marking step ST1, prior to the inspection by the inspection device 1, a first mark ( It is also possible to mark M1). In this case, the position of the defect F detected by the other inspection device (for example, XY coordinates based on the front end of the master S1 in the conveying direction) is input to the control device 5 in advance. And, for example, the control device 5 determines the position (X coordinate) of the input fault F, the feeding roller R1 and the separation distance L2 in the X direction of the first marking device 2, The timing at which the defect F detected by another inspection device reaches the first marking device 2 based on the conveyance amount of the master S1 measured by an encoder (not shown) or the like attached to the nip roller R2 can be computed. And, for example, the control device 5 corresponds to the position (Y coordinate) of the defect F detected by another inspection device at the timing when the detected defect F reaches the first marking device 2. The first marking device 2 is controlled so that transparent ink is ejected from the nozzle of the first marking device 2 to be printed. As a result, the first mark M1 is marked at the position where the defect F exists.

In addition, in order to calculate the timing at which the defect F detected by another inspection device reaches the first marking device 2, as described in Patent Document 2, for example, the width direction Y of the master S1 direction) end (the end not used as the sheet-like product S2), by recording identification information indicating the position in the conveying direction of the master S1, reading this identification information and inputting it to the control device 5, It is also possible to employ a structure that calculates the above timing.

<Second marking process (ST2)>

As shown in Fig. 3(b) , in the second marking step ST2, the second marking device 3 indicates positional information on the master S1 with respect to the master S1 before cutting. 2 Mark the mark (M2). The positional information indicated by the second mark M2 means information including at least the position of the master S1 in the conveying direction (X direction). The position of the master S1 in the conveying direction may be indicated by the distance from the tip of the master S1 in the conveying direction, or may be indicated by a number assigned sequentially according to the distance from the tip of the master S1 in the conveying direction. good night. The positional information indicated by the second mark M2 may include a position in the width direction (Y direction) of the master S1 in addition to the position in the transport direction of the master S1. In addition, the second mark M2 may indicate information about the master S1 for identifying the plurality of masters S1 from each other.

The second mark M2 in this embodiment is DataMatrix (registered trademark), which is a type of two-dimensional code. However, the present invention is not limited to this, and other two-dimensional codes such as QR codes (registered trademarks), one-dimensional codes (bar codes), and other positional information on the master S1 can be expressed. , various types of marks can be employed as the second mark M2.

In the 2nd marking process (ST2), by the 2nd marking device 3, the master S1 before cutting is made so that a some 2nd mark M2 may exist in each of the some sheet-like products S2 after cutting. A second mark M2 is marked for . Specifically, according to the dimensions and shape of the sheet-like product S2, the planned cutting line CL indicated by a broken line in Fig. 3(b) is determined in advance, and is stored in the control device 5. The planned cutting line CL is not actually drawn on the master S1, but is stored as XY coordinates based on the front end of the master S1 in the transport direction, for example. In the example shown in Fig. 3(b), the planned cutting lines CL are grid-like and are positioned within each rectangle (18 rectangles are shown in Fig. 3(b)) partitioned by the planned cutting lines CL. The site|part of disk S1 to do turns into sheet-like product S2, respectively after cutting. Therefore, in the 2nd marking process (ST2), by the 2nd marking device 3, a plurality of 2nd marks M2 exist in each rectangle partitioned by the planned cutting line CL, and the planned cutting line The second mark M2 is marked so as not to overlap with (CL). In the example shown in Fig. 3(b), four second marks M2 are marked in each rectangle, and the position of the four second marks M2 based on the planned cutting line CL is in which rectangle. are set in the same way. Specifically, in Fig. 3(b), the positions of the four second marks M2 existing in each rectangle are near the upper left apex, near the upper right apex, and lower left of the rectangle for any rectangle. near the apex and near the apex on the lower right. The position of the second mark M2 located near the upper left apex of the rectangle and the position of the second mark M2 located near the upper right apex of the rectangle are mutually related to each other in the width direction (Y direction) of the master S1. different. Further, the position of the second mark M2 located near the lower left apex of the rectangle and the position of the second mark M2 located near the lower right apex of the rectangle are in the width direction (Y direction) of the master S1. different about

When performing 2nd marking process (ST2), control apparatus 5 separates distance L3 of the X direction of drawing-out roller R1 and 2nd marking apparatus 3, and nip roller R2, for example The timing at which a predetermined portion of the master S1 reaches the second marking device 3 can be calculated based on the conveyance amount of the master S1 measured by an encoder (not shown) or the like attached thereto. And, for example, the control device 5 determines that a portion having predetermined XY coordinates based on the planned cutting line CL (a portion marking the four second marks M2 in each rectangle) is the second At the timing of reaching the marking device 3, the second marking device 3 is controlled so that transparent ink is ejected from the nozzle of the second marking device 3 corresponding to the Y coordinate of the predetermined XY coordinates. Thereby, the 2nd mark M2 is marked in each of the 4 parts in each rectangle.

<Cutting process (ST3)>

As shown in Fig. 3(c) , in the cutting step ST3, the original plate S1 marked with the first mark M1 and the second mark M2 is cut by the cutting device 4 along the planned cutting line CL. ) (see FIG. 3(b)) to manufacture a plurality of sheet-like products S2. When a blanking processing device is applied as the cutting device 4, the conveyance of the master S1 is temporarily stopped at the timing when the planned cutting line CL of the master S1 reaches the cutting device 4, The disc (S1) is cut. As the cutting device 4, when applying a laser processing device, it is also possible to cut while conveying the master S1, without stopping conveyance of the master S1.

When performing the cutting process (ST3), the control device 5 is, for example, the feed roller R1 and the separation distance L4 of the X direction of the cutting device 4 and the encoder attached to the nip roller R2 Based on the transport amount of the master S1 measured by (not shown) or the like, the timing at which the planned cutting line CL of the master S1 stored in the control device 5 reaches the cutting device 4 is calculated. possible. And the control device 5 controls and drives the cutting device 4 at the timing when the planned cutting line of the master S1 reaches the cutting device 4 . Thereby, master S1 is cut along the planned cutting line CL, and several sheet-like product S2 is manufactured.

<Recovery process (ST4)>

As shown in FIG.3(d), in collection process ST4, unnecessary part S11 which does not become sheet-like product S2, conveying cut master S1 by conveyor R3 (FIG. 3((d)), c)) is removed by a known removal device (not shown). After that, the sheet-like product S2 is conveyed by the conveyor R3, and the sheet-like product S2 is collected by gravity dropping it from the downstream end of the conveyor R3 in the conveying direction.

According to the manufacturing method according to this embodiment described above, for the master S1 before cutting, the first mark M1 is marked at the position where the defect F detected by inspecting the master S1 exists. One marking step (ST1) and the second marking step (ST2) of marking the second mark M2 indicating the positional information in the master S1 with respect to the master S1 before cutting are used together, but the second In the marking step ST2, a plurality of second marks M2 are present on each of the plurality of sheet-like products S2 after cutting (that is, for each sheet-like product S2, not singular, but a plurality of mark so that the second mark M2 exists). For this reason, the possibility that the first mark M1 overlaps with all of the plurality of second marks M2 is greatly reduced. Therefore, by reading the 2nd mark M2 (the 2nd mark M2 which does not overlap with the 1st mark M1) marked on each sheet-like product S2 after cutting, there is an abnormality in the sheet-like product S2. It is possible to contribute to the investigation of the cause in the case where this occurs and the improvement of the product ratio of the sheet-like product S2.

Further, according to the manufacturing method according to the present embodiment, in the second marking step ST2, the position of the plurality of second marks M2 in each of the plurality of sheet-like products S2 after cutting is the master S1 ), the second marks M2 are marked to include different ones in the width direction (Y direction). Specifically, the position of the second mark M2 located near the vertex on the upper left of each rectangle partitioned by the proposed cutting line CL and the position of the second mark M2 located near the vertex on the upper right Different from each other in the width direction of the master S1, the position of the second mark M2 located near the lower left apex of the rectangle and the position of the second mark M2 located near the lower right apex of the rectangle are the disk ( It is different for the width direction of S1). For this reason, defects periodically occur along the conveyance direction (X direction) of the master S1 due to a defect in the nip roller R2 or the like (thereby, the first mark M1 may appear in the master S1). ), even if it is marked periodically along the transport direction of), since the positions of the plurality of second marks M2 in each sheet-like product S2 include different ones with respect to the width direction of the master S1 , the possibility that the first mark M1 and all of the plurality of second marks M2 overlap is greatly reduced.

Moreover, according to the manufacturing method by this embodiment, in 2nd marking process ST2, the 2nd mark M2 is marked so that it may not overlap with the predetermined cutting line CL of master S1. For this reason, in each sheet-like product S2 after cutting, it can be made into the state in which the some 2nd mark M2 was marked reliably.

Further, according to the manufacturing method according to the present embodiment, in each of the first marking step (ST1) and the second marking step (ST2), the first mark M1 and the second mark are formed by an inkjet method using transparent ink. Mark (M2). For this reason, under normal illumination, the 1st mark M1 and the 2nd mark M2 become invisible, and it has the advantage that the external appearance of the sheet-shaped product S2 is not impaired.

Moreover, in this embodiment, in the 2nd marking process (ST2), as shown in FIG. 3(b), the four 2nd marks M2 are marked in each rectangle divided by the planned cutting line CL, , and the positions of the four second marks M2 based on the proposed cutting line CL have been described for an example in which the same is set for all rectangles, but the present invention is not limited to this.

4 is a diagram explaining a modified example of the second marking process (ST2). Specifically, FIG. 4 is a diagram schematically showing the state of the master S1 immediately after performing the modified example of the second marking step ST2. In addition, in FIG. 4, unlike FIG. 3(b), illustration of the fault F and the 1st mark M1 is abbreviate|omitted.

As shown in Fig. 4, also in the modified example of the second marking step ST2, as in the case shown in Fig. 3(b), four second marks M2 are placed in each rectangle partitioned by the projected line CL. ) is marked, and for any rectangle, the second mark M2 closest to the vertex on the upper left of the rectangle is M21, the second mark M2 closest to the vertex on the upper right of the rectangle is M22, and the left side of the rectangle The second mark M2 closest to the lower apex is referred to as M23, and the second mark M2 closest to the lower right vertex of the rectangle is referred to as M24. Then, the positions (XY coordinates) of the second marks M21 to M24 based on the proposed cutting line CL (based on each vertex at which the planned cutting line CL intersects) are set to (X1, Y1), respectively. , (X2,Y2), (X3,Y3), and (X4,Y4).

In this case, in the second marking step ST2 shown in FIG. 3(b), the positions of the four second marks M2 (corresponding to M21 to M24 shown in FIG. 4) in each rectangle are the same for all rectangles, That is, X1 to X4 and Y1 to Y4 are set identically for any rectangle. However, in the modified example of the second marking step ST2 shown in Fig. 4, the positions of the four second marks M21 to M24 in each rectangle are set to include different ones. That is, the positions of the four second marks M21 to M24 in any one rectangle selected from among all the rectangles are compared with the positions of the four second marks M21 to M24 in any other rectangle. In this case, there are cases where the four second marks M21 to M24 in another rectangle do not exist at the same position as any of the four second marks M21 to M24 in one rectangle. is set In particular, in the example shown in Fig. 4, as a preferable example, all the positions of the four second marks M21 to M24 are set to be different for each rectangle. That is, in the example shown in Fig. 4, the position (X1, Y1) of the second mark M21 is different for each rectangle, the position (X2, Y2) of the second mark M22 is different for each rectangle, and the second mark M23 is different for each rectangle. ) is different for each rectangle, and the position (X4, Y4) of the second mark M24 is different for each rectangle.

It is not limited to the example shown in Fig. 4, and as a modified example, for example, only the positions of the four second marks M2 in one rectangle are the same as the positions of the four second marks M2 in the remaining rectangles. Otherwise, the positions of the four second marks M2 of the remaining rectangles may be the same.

As a modified example, for example, only the position of one second mark M2 (for example, second mark M24) in one rectangle is one second mark to which the remaining rectangles correspond. (For example, the position of the second mark M24) and the position of the remaining second marks (eg, the second mark M21, the second mark M22, and the second mark M23) It may be the same for all rectangles.

As described above, in the modified example of the second marking step ST2, since the position of the four second marks M2 in each rectangle is set to include different ones, the plurality of sheet-like products S2 after cutting The position M2 of the second mark in the case includes different positions. Because of this, for example, when a plurality of sheet-like products S2 are laminated and used, the second mark M2 in each sheet-like product S2 overlaps, and there is a concern that dents may occur in the overlapped portion has the advantage of being able to reduce

Further, in the present embodiment, in the first marking step (ST1), as shown in Fig. 3 (a), it is composed of a plurality of circular dot-shaped marks aligned in the conveyance direction (X direction) of the master S1. Although the example of marking the 1st mark M1 was demonstrated, this invention is not limited to this.

5 is a diagram explaining a modified example of the first marking process (ST1). Specifically, FIG. 5 is a diagram schematically showing a state of a part of the master S1 immediately after performing a modified example of the first marking step ST1.

As shown in Fig. 5, in the modified example of the first marking step ST1, at least one (all in the example shown in Fig. 5) of the plurality of dot-like marks constituting the first mark M1 is the second mark. (M2). That is, at least one of the plurality of dot-shaped marks is not a circular mark, but is a second mark M2 such as a two-dimensional code representing positional information on the master S1. In particular, as shown in Fig. 5, when all of the plurality of dot-shaped marks constituting the first mark M1 are used as the second marks M2, the first step for executing the first marking step ST1 It is also possible to double use the marking device 2 as the second marking device 3 for executing the second marking step ST2.

Moreover, in this embodiment, in the 2nd marking process (ST2), about the master S1 before cutting so that four 2nd marks M2 may exist in each of the some sheet-like product S2 after cutting. Although the case of marking the second mark M2 has been described as an example, the present invention is not limited to this. As long as the second marks M2 are marked on the master S1 before cutting so that a plurality (that is, two or more) of the second marks M2 exist on each of the plurality of sheet-like products S2 after cutting. , there is no limit to the number.

In addition, in this embodiment, although the case where the elongate master S1 wound in the shape of a roll was drawn out, conveyed, and cut|disconnected to manufacture the some sheet-like product S2 was taken as an example and demonstrated, this invention is limited to this It is not. After drawing out and conveying the elongate master S1 wound in the form of a roll, and marking the 1st mark M1 and the 2nd mark M2, a large sheet-like intermediate body (dimensions smaller than several sheet-like products S2) It is also possible to employ an aspect in which a large sheet-like intermediate body) is once cut out, and this intermediate body is cut to manufacture a plurality of sheet-like products S2. Cutting of an intermediate body may be conveyed by conveyor R3 grade|etc., and it may be cut, and it is also possible to cut in the state mounted on the predetermined|prescribed cutting board.

In this embodiment, the case where the first mark M1 is marked on the master S1 before cutting has been described as an example, but the present invention is not limited to this, and the intermediate body cut from the master S1 is not limited thereto. It is also possible to mark the first mark M1. In the present embodiment, the case where the second mark M2 is marked on the master S1 before cutting has been described as an example, but the present invention is not limited to this, and the intermediate body cut from the master S1, It is also possible to mark the 2nd mark M2 with respect to some sheet-like product S2 after cutting.

Fig. 6 is a manufacturing apparatus for carrying out a method for manufacturing sheet-like products S2 according to a modified example of the present invention (a configuration in which second marks M2 are marked on a plurality of sheet-like products S2 after being cut). It is a drawing showing a schematic configuration. In FIG. 6, the same code|symbol is attached|subjected to the same component as the manufacturing apparatus 100 shown in FIG.

As shown in FIG. 6 , in the manufacturing apparatus 100' of the modified example, the 2nd marking device 3 is a conveyor R3 downstream of the cutting device 4 (downstream in the conveyance direction of the sheet-like product S2). ), and the 2nd marking device 3 marks the 2nd mark M2 with respect to the sheet-like product S2 before collection|recovery of the sheet-like product S2.

Specifically, for example, the control device 5 is the feed roller R1 and the X-direction separation distance L3' of the second marking device 3, and an encoder attached to the nip roller R2 (shown Based on the amount of conveyance of the master S1 measured by (omitted) or the like and the amount of conveyance of the sheet-like product S2 measured by the encoder (not shown) or the like attached to the rollers of the conveyor R3, the master ( After the predetermined portion of S1 is cut into the sheet-like product S2, the timing of reaching the second marking device 3 can be calculated. And, for example, the control device 5 is based on the planned cutting line CL of the master S1 (the cutting line used as the edge of the sheet-like product S2 after cutting into the sheet-like product S2). At the timing at which a portion having predetermined XY coordinates (in the example shown in FIG. 3 , a portion marked with four second marks M2 in each rectangle) reaches the second marking device 3, the predetermined The second marking device 3 is controlled so that transparent ink is ejected from the nozzles of the second marking device 3 corresponding to the Y coordinates of the XY coordinates of . Thereby, in the example shown in FIG. 3, the 2nd mark M2 is each marked on the 4 site|part in each rectangle (inside sheet-like product S2).

Moreover, as a method of marking the 2nd mark M2, it is also possible to employ|adopt the method of using the identification information described in patent document 2. Specifically, as described in Patent Literature 2, the position in the conveyance direction of the master S1 is indicated at the end (the end not used as the sheet-like product S2) in the width direction (Y direction) of the master S1. Identification information is recorded and, for example, this identification information is read by a predetermined reading device disposed immediately before the cutting device 4, and is input to the control device 5. The control unit 5 uses the read identification information and the conveyance amount of the sheet-like product S2 measured by an encoder (not shown) attached to a roller provided on the conveyor R3 or the like, and the sheet-like product after being cut. The position of (S2) in the conveying direction in the master (S1) is recognized, and the site having predetermined XY coordinates based on the edge of the sheet-like product (S2) conveyed sequentially after cutting (shown in FIG. 3 In the example, the timing at which each of the four second marks M2 in each rectangle is marked reaches the second marking device 3 can be calculated. And, the control device 5 also controls the second marking device 3 so that the transparent ink is ejected from the nozzle of the second marking device 3 corresponding to the Y coordinate of the predetermined XY coordinates at the above timing. possible.

In addition, in this embodiment, the 1st marking process (ST1), the 2nd marking process (ST2), the cutting process (ST3), and the recovery process (ST4) are single manufacturing apparatus 100 (in other words, a single manufacturing line) ) has been described as an example, but the present invention is not limited to this. For example, after performing the first marking process (ST1) and the second marking process (ST2), the first mark (M1) and the second mark (M2) are marked (M2) once the original (S1) winding roller (shown) It is also possible to adopt an aspect of winding up in (omitted), transporting to another production line, and executing the cutting step (ST3) and the collecting step (ST4). In other words, a series of processes of the first marking process (ST1), the second marking process (ST2), the cutting process (ST3), and the recovery process (ST4) are between the second marking process (ST2) and the cutting process (ST3). It is also possible to divide in In addition, it is also possible to divide a series of steps (ST1-ST4) between any process, such as dividing between 1st marking process (ST1) and 2nd marking process (ST2).

In this embodiment, the case where the first marking step (ST1) and the second marking step (ST2) are performed in order has been described as an example, but the present invention is not limited to this, and the second marking step (ST2) It is also possible to adopt an aspect of first executing the first marking step (ST1).

1 inspection device
2 First marking device
3 2nd marking device
4 cutting device
5 control unit
100 manufacturing units
F flaw
M1 first mark
M2 second mark
S1 discus
S2 sheet products

Claims (11)

A long disk wound into a roll is drawn out, conveyed and cut, or a long disk wound into a roll is drawn out and conveyed to cut out a large sheet-like intermediate body, and the intermediate body is cut to produce a plurality of sheet-like products. As a way to
A first marking step of marking a first mark at a position where a defect detected by inspecting the master is present in the master before cutting, the master before cutting the intermediate, or the intermediate;
A second marking step of marking a second mark indicating positional information on the master on the master before cutting, the intermediate before cutting out the master, the intermediate, or the plurality of sheet products after cutting. include,
In the second marking step, a plurality of second marks exist on each of the plurality of sheet-like products after cutting, so that the master before cutting, the intermediate before cutting, the intermediate, or after cutting The manufacturing method of the sheet-like product which marks the said 2nd mark with respect to the said some sheet-like product. According to claim 1,
In the second marking step, the plurality of second marks are marked such that the positions of the plurality of second marks in each of the plurality of sheet-like products after cutting are different from each other in the width direction of the master sheet. A method of manufacturing a phase product. According to claim 1 or 2,
wherein the second mark is a one-dimensional code or a two-dimensional code. According to any one of claims 1 to 3,
In the second marking step, when marking the second mark on the master before cutting or the master before cutting out the intermediate, the second mark so as not to overlap with a predetermined cutting line of the master A method for manufacturing a sheet-like product that marks a. According to any one of claims 1 to 4,
In the first marking step, the first mark is marked using transparent ink, and/or in the second marking step, the second mark is marked using transparent ink. manufacturing method. According to any one of claims 1 to 5,
In the second marking step, the second mark is marked so that the positions of the second marks in the plurality of sheet products after cutting based on the planned cutting line are different from each other. manufacturing method. According to any one of claims 1 to 6,
The method for manufacturing a sheet-like product, wherein the first mark is composed of a plurality of dot-like marks aligned in a conveyance direction of the master. According to claim 7,
The method for manufacturing a sheet-like product, wherein at least one of the plurality of dot-shaped marks constituting the first mark is the second mark. Sheet-like products produced in multiple numbers by drawing out, transporting and cutting a long disk wound into a roll shape, or by drawing out and conveying a long disk wound into a roll shape to cut out a large sheet-shaped intermediate body and cutting the intermediate body, ,
A sheet-like product in which a first mark is marked at a position where a defect detected by inspecting the master is present, and a plurality of second marks indicating positional information in the master are marked. As a long disk wound into a roll shape for producing a plurality of sheet-like products by drawing out, conveying and cutting,
A first mark is marked at a position where a defect detected by inspecting the master is present, and a second mark indicating positional information in the master is marked,
The master, wherein the second marks are marked so that a plurality of the second marks are present on each of the plurality of sheet-like products after cutting. As a large sheet-like intermediate for producing a plurality of sheet-like products by drawing out, conveying, cutting, and cutting a long disk wound into a roll shape,
A first mark is marked at a position where a defect detected by inspecting the master is present, and a second mark indicating positional information in the master is marked,
The intermediate body in which the second marks are marked so that a plurality of the second marks are present on each of the plurality of sheet-like products after cutting.

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