WO2015016299A1

WO2015016299A1 - Defect inspection system, and film manufacturing device

Info

Publication number: WO2015016299A1
Application number: PCT/JP2014/070166
Authority: WO
Inventors: 綾子末松; 圭太井村
Original assignee: 住友化学株式会社
Priority date: 2013-08-02
Filing date: 2014-07-31
Publication date: 2015-02-05
Also published as: JP2015031612A; JP6410413B2; TWI630381B; CN105408737A; TW201506385A; CN105408737B; KR102241700B1; KR20160040544A

Abstract

A defect inspection system which comprises: a film conveyance unit which conveys a belt-shaped film; a defect inspection unit which performs defect inspection on the film which is conveyed by the film conveyance unit; and a recording unit which is provided downstream from the defect inspection unit on a film conveyance path comprising the film conveyance unit, and is capable of recording defect information on the film, said defect information pertaining to defects detected by the defect inspection unit. The film conveyance unit includes: a first conveyance roller unit on which the film is wound in either a first mode, in which the defect information is recorded on a first surface of the film by the recording unit, or a second mode, in which the defect information is recorded on a second surface; and a second conveyance roller unit on which the film is wound in one of either the first mode or the second mode.

Description

Defect inspection system and film manufacturing apparatus

The present invention relates to a defect inspection system and a film manufacturing apparatus.
This application claims priority based on Japanese Patent Application No. 2013-161809 for which it applied on August 2, 2013, and uses the content here.

A film such as a polarizing plate is wound around a core material after performing a defect inspection such as a foreign matter defect or an uneven defect. Information on the position and type of the defect (hereinafter referred to as defect information) is recorded on the film by printing a barcode on the edge of the film or marking the defective part. When the winding amount reaches a certain amount, the film wound around the core is separated from the upstream film and shipped as a raw roll. As a defect inspection system for inspecting a film defect as described above, a system including a defect inspection unit and a recording unit for recording defect information on a film is known on a film conveyance path ( For example, see Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-7779

In the defect inspection system as described above, for example, when the adhesion of the ink is poor depending on the material of the recording surface, or when the recording surface is used as a bonding surface to which another film member is bonded after the defect inspection process. In addition, it is necessary to appropriately change the film recording surface on which defect information is recorded to either the front surface or the back surface.

Therefore, it is conceivable that recording portions corresponding to the front and back surfaces of the film are respectively installed and used by appropriately selecting them. However, in this configuration, the cost increases due to an increase in the installation cost, or the system itself increases in size due to an increase in the installation space of the recording unit. In addition, the cost increases due to an increase in size of the system.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a defect inspection system and a film manufacturing apparatus capable of recording defect information on both sides of a film at a low cost while suppressing an installation space.

In order to achieve the above object, the present invention employs the following means.
(1) A defect inspection system according to an aspect of the present invention includes a film transport unit that transports a belt-shaped film, a defect inspection unit that performs defect inspection of the film transported by the film transport unit, and the film transport unit. A recording unit that is provided on the downstream side of the defect inspection unit in the film conveyance path that is configured to record defect information related to defects detected by the defect inspection unit on the film, and the film conveyance unit includes: The first conveying roller on which the film is wound in each of the first mode in which the defect information is recorded on the first surface of the film and the second mode in which the defect information is recorded on the second surface by the recording unit And a second transport roller portion around which the film is wound in one of the first mode and the second mode. .

(2) In the aspect of (1), the first transport roller unit changes the transport direction of the film in a part of the film transport path in response to switching between the first mode and the second mode. You may switch.

(3) In the aspect of (1) or (2), the film transport unit transports the film in a first film transport path in the first mode, and transports the film in a second mode in the second mode. The first transport roller unit, and the distance between the defect inspection unit and the recording unit of the first film transport route and the second film transport route are equal to each other, and A 2nd conveyance roller part may be installed.

(4) In any one of the above aspects (1) to (3), the recording unit may record the defect information on the film wound around the first transport roller unit.

(5) In any one of the above aspects (1) to (4), at least one of the first transport roller unit and the second transport roller unit may include a plurality of roller members.

(6) A film manufacturing apparatus according to an aspect of the present invention includes a film manufacturing unit that manufactures a strip-shaped film, and a defect inspection unit that performs defect inspection of the film manufactured by the film manufacturing unit. The defect inspection unit has any one of the above (1) to (5).

According to the present invention, it is possible to record defect information on both sides of the film at a low cost while suppressing installation space.

The figure which shows schematic structure of a film manufacturing apparatus, and shows the state conveyed by the 1st film conveyance path | route. The figure which shows schematic structure of a film manufacturing apparatus, and shows the state conveyed by the 2nd film conveyance path | route. The figure which shows schematic structure of a film manufacturing part.

Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments. In all the drawings below, the dimensions and ratios of the constituent elements are appropriately changed in order to make the drawings easy to see. In the following description and drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant description is omitted.

1 and 2 are schematic configuration diagrams of a film manufacturing apparatus according to an embodiment of the present invention. FIG. 1 shows a state in which a film is conveyed by a first film conveyance path, and FIG. The state conveyed by the 2nd film conveyance path | route is shown.
As shown in FIGS. 1 and 2, the film manufacturing apparatus 1 is a film manufacturing unit 10 for manufacturing a predetermined film 100 and a predetermined defect inspection of the film 100 manufactured by the film manufacturing unit 10. A defect inspection unit 5 and a control unit 50 are provided.
In addition, each component of the film manufacturing apparatus 1 is comprehensively controlled by the said control part 50 as an electronic control apparatus. The defect inspection unit 5 is constituted by a defect inspection system according to an embodiment of the present invention.

The defect inspection unit 5 includes a defect inspection unit 20, a recording unit 30 capable of recording defect information related to defects detected by the defect inspection unit 20 on both sides of the film 100, a film manufacturing unit 10, a defect inspection unit 20, and And a film transport unit 40 that sequentially transports the film 100 between the recording units 30.

In the defect inspection unit 5, the film transport section 40 can transport the film 100 manufactured by the film manufacturing unit 10 via the first film transport path 40A or the second film transport path 40B. Switching of the first film transport path 40A or the second film transport path 40B in the film transport unit 40 is performed by an operator's work.

In the present embodiment, when the film 100 conveyed via the first film conveyance path 40A reaches the recording unit 30, one side (first surface) 100b side faces the recording unit 30. On the other hand, when the film 100 conveyed via the second film conveyance path 40 B reaches the recording unit 30, the other surface (second surface) 100 c side faces the recording unit 30. That is, when the first film transport path 40A is selected in the film transport unit 40, the recording unit 30 can record defect information on the one surface 100b side of the film 100, and the second film transport in the film transport unit 40. When the path 40B is selected, the recording unit 30 can record defect information on the other surface 100c side of the film 100. In addition, the one surface 100b of the film 100 is a surface on the side where the first protection film 100B is bonded in the film 100 manufactured by the film manufacturing unit 10 as described later, and the other surface 100c of the film 100 These are the surfaces on the side where the second protection film 100C is bonded (see FIG. 3).

The defect inspection unit 20 detects defects in the film 100 by executing inspection processing such as reflection inspection, transmission inspection, oblique transmission inspection, and crossed Nicol transmission inspection on the film 100 being conveyed. The installation position of the defect inspection unit 20 is not limited to the place shown in FIG. 1, and may be any position as long as it is between the film manufacturing unit 10 and the recording unit 30 in the transport path of the film 100. .

The defect inspection unit 20 is a defect in the film 100 of the

illumination units

21 a and 22 a that irradiate the film 100 with light, and the light that is irradiated from the

illumination units

21 a and 22 a and passes through the film 100 (one or both of reflection and transmission). And

photodetectors

21b and 22b capable of detecting changes due to the presence or absence of the light. The defect inspection unit 20 includes an illumination unit and a photodetector for each type of defect to be inspected.

The

illumination units

21a and 22a irradiate light whose light intensity, wavelength, polarization state, etc. are adjusted according to the type of inspection performed by the defect inspection unit 20. The

photodetectors

21b and 22b are configured by an image pickup device such as a CCD, and pick up an image of a portion of the film 100 irradiated with light by the

illumination units

21a and 22a. The detection results (imaging results) of the

photodetectors

21b and 22b are output to the control unit 50.

In this embodiment, the film transport unit 40 causes the film 100 to be defective so that the other surface 100c faces the

photodetectors

21b and 22b in both the first film transport path 40A and the second film transport path 40B. It is conveyed to the inspection unit 20.

The control unit 50 analyzes the images captured by the

photodetectors

21b and 22b, and determines the position and type of the defect. When it is determined that the film 100 has a defect, the control unit 50 controls the recording unit 30 to record defect information on the film 100 as described later.

In the present embodiment, the control unit 50 is configured to include a computer system.
This computer system includes an arithmetic processing unit such as a CPU and a storage unit such as a memory and a hard disk. The control unit 50 of the present embodiment includes an interface that can execute communication with an external device of the computer system. An input device that can input an input signal may be connected to the control unit 50. The input device includes an input device such as a keyboard and a mouse, or a communication device that can input data from a device external to the computer system. The control unit 50 may include a display device such as a liquid crystal display that indicates the operation status of each unit of the film manufacturing apparatus 1 or may be connected to the display device.

An operating system (OS) that controls the computer system is installed in the storage unit of the control unit 50. The storage unit of the control unit 50 stores a program that causes the arithmetic processing unit to control each unit of the film manufacturing apparatus 1 to execute processing for causing each unit of the film manufacturing apparatus 1 to accurately transport the film 100. Yes. Various types of information including programs recorded in the storage unit can be read by the arithmetic processing unit of the control unit 50. The control unit 50 may include a logic circuit such as ASIC (Application Specific Integrated する Circuit) that executes various processes required for controlling each part of the film manufacturing apparatus 1.

The storage unit is a concept including a semiconductor memory such as a RAM (Random Access Memory) and a ROM (Read Only Memory), and an external storage device such as a hard disk, a CD-ROM reader, and a disk-type storage medium. The storage unit is functionally a storage area for storing program software in which the control procedure of operations of the film manufacturing unit 10, the defect inspection unit 20, the recording unit 30, and the film transport unit 40 is described, and various other storage areas Is set.

The recording unit 30 is provided on the downstream side in the transport direction from the defect inspection unit 20 in the first film transport path 40A or the second film transport path 40B in which the film 100 is transported. The recording unit 30 displays defect information relating to defects detected by the defect inspection unit 20 on one side 100b (the side on which the first protection film 100B is bonded) or the other side 100c (second protection film 100C) of the film 100. On the side where the is bonded). The defect information includes information on the position and type of the defect.

The recording unit 30 records defect information on the film 100 at a predetermined timing after the defect inspection is performed by the defect inspection unit 20. The timing at which recording is performed by the recording unit 30 is determined by the transport distance of the film 100 from the defect inspection unit 20 to the recording unit 30.
For example, when a rotary encoder that measures the transport amount of the film 100 is disposed on the transport path of the film 100 and the transport amount of the film 100 (the number of pulses counted by the rotary encoder) reaches a predetermined value. The control unit 50 controls the recording unit 30 to record defect information on the film 100.

The recording unit 30 is, for example, an end of the surface (one surface 100b and the other surface 100c) of the film 100 in the form of defect information in the form of identification codes (one-dimensional barcode, two-dimensional barcode, QR code (registered trademark), etc.) To record. The identification code includes, for example, information (defects) indicating how far the defect detected by the defect inspection unit 20 is located along the film width direction from the position where the barcode is attached. Information on the location of the). The identification code may include information regarding the type of detected defect.

The recording unit 30 directly displays the position of the defect on the surface of the film 100 (marking) by attaching a dot-shaped, line-shaped, or frame-shaped mark that includes the defect to the defective portion of the film 100. May be. At this time, information on the type of the result may be recorded by showing a symbol or pattern indicating the type of the defect together with the mark in the defective part.
Moreover, the structure which affixes the label which attached | subjected the said marking on the surface of the film 100 may be sufficient as the recording part 30. FIG.

The film transport unit 40 includes a first transport roller unit 43, a second transport roller unit 45, and a film winding unit 44.

As shown in FIGS. 1 and 2, the first transport roller unit 43 has a case where defect information is recorded on one surface (first surface) 100 b of the film 100 by the recording unit 30 (first mode) and the other surface (first surface). 2 side) When the defect information is recorded on 100c (second mode), the film 100 is wound. That is, the first transport roller unit 43 is configured to wind the film 100 when any one of the first film transport path 40A and the second film transport path 40B is selected in the film transport unit 40. In other words, the first transport roller section 43 is used in the first film transport path 40A and the second film transport path 40B, unlike the second transport roller section 45 described later.

When the defect information is recorded on one surface (first surface) 100b of the film 100 by the recording unit 30 (first mode), the second transport roller unit 45 records defect information on the other surface (second surface) 100c. The film 100 is wound in one of the modes (second mode). That is, the second transport roller unit 45 changes the winding method of the film 100 in response to the switching of the path between the first film transport path 40A and the second film transport path 40B in the film transport unit 40. Is. The second transport roller unit 45 is not used in the first film transport path 40A and the second film transport path 40B.

In the present embodiment, the second transport roller unit 45 includes a one-side recording roller unit 41 and a second-side recording roller unit 42.
The one-side recording roller unit 41 is a portion around which the film 100 is wound when the recording unit 30 records the defect information on the one side 100b of the film 100. That is, the one-side recording roller unit 41 is the one on which the film 100 is wound when the first film transport path 40A is selected.

On the other hand, as shown in FIG. 2, the other side recording roller portion 42 is a portion around which the film 100 is wound when the recording unit 30 records the defect information on the other side 100 c of the film 100. That is, the other-side recording roller unit 42 is configured to wind the film 100 when the second film transport path 40B is selected in the film transport unit 40.

In the present embodiment, the one-side recording roller unit 41 includes a plurality (two in the present embodiment) of rollers 41a. In FIG. 1, the arrows shown along the outer periphery of each roller 41a indicate the rotation direction of the roller 41a.

The roller 41a may be composed of a driven roller that is rotated by the transport force of the film 100, may be composed of a main roller that imparts a transport force to the film 100, or is composed of these in a mixed manner. May be. In the one-side recording roller unit 41, the number of rollers 41a is not limited to the above two, and may include one or three or more rollers 41a.

In the present embodiment, the other-side recording roller unit 42 is composed of one roller 42a. In FIG. 1, the arrows shown along the outer periphery of the roller 42a indicate the rotation direction of the roller 42a.
The roller 42a may be constituted by a driven roller that rotates by the conveyance force of the film 100, may be constituted by a main driving roller that imparts conveyance force to the film 100, or is constituted by mixing these. May be. In the other side recording roller section 42, the number of rollers 42a is not limited to one, and may include a plurality of rollers 42a.

The first transport roller unit 43 includes a front stage part 43A, a middle stage part 43B, and a rear stage part 43C. The front-stage part 43A, the middle-stage part 43B, and the rear-stage part 43C are each composed of a plurality of rollers. For example, the front stage portion 43A is configured by a plurality (three in the case of this embodiment) of rollers 43a, and the middle stage portion 43B is configured by a plurality of (three in the case of this embodiment) rollers 43b. 43C includes a plurality of (four in the case of this embodiment) rollers 43c.

In addition, these

rollers

43a, 43b, and 43c may be comprised from the driven roller which rotates with the conveyance force of the film 100, may be comprised from the driving roller which provides the conveyance force to the film 100, and these. May be mixed. Further, in the front stage part 43A, the middle stage part 43B, and the rear stage part 43C, the number of the

rollers

43a, 43b, 43c is not limited to the above, and can be changed as appropriate.

1 and 2, the arrows shown along the outer peripheries of the

rollers

43a, 43b, and 43c indicate the rotation directions of the

rollers

43a, 43b, and 43c. 1 and 2, the rollers 43b constituting the middle stage 43B are referred to as rollers 43b1, 43b2, and 43b3 in the order arranged from the upper side to the lower side of the figure for convenience and constitute the front stage 43A. For convenience, the rollers 43a are referred to as rollers 43a1, 43a2, and 43a3 in the order in which they are disposed from the upstream side toward the downstream side in the transport direction of the film 100 in the figure.

Here, a case where the first film transport path 40A is selected by the operator will be described.
In this case, as shown in FIG. 1, the film 100 drawn out from the film manufacturing unit 10 is composed of the front stage portion 43A (roller 43a), the one-side recording roller portion 41 (roller) from the upstream side toward the downstream side in the transport direction. 41a), the middle step portion 43B (roller 43b), and the rear step portion 43C (roller 43c).

In the first film transport path 40A, the film 100 is passed along the common inscribed line direction of the rollers 43a2 and 43a3 constituting the front stage 43A, and then drawn upward via the rollers 43a3. It is wound around the one-side recording roller unit 41.

The film 100 that has passed through the one-side recording roller unit 41 is wound around the rollers 43b1, 43b2, and 43b3 of the middle stage 43B in this order. At this time, as shown in FIG. 1, all the rollers 43b1, 43b2, 43b3 rotate counterclockwise, only the roller 43a2 of the front stage 43A rotates clockwise, and the rollers 43a1, 43a3 counteract respectively. Rotate clockwise.

When the first film transport path 40A is thus selected, the film 100 passes through the recording unit 30 so as to go from the upper side to the lower side in the vertical direction through the one-side recording roller unit 41. At this time, the film 100 is conveyed so that the one surface 100b faces the recording unit 30. Therefore, the recording unit 30 can record defect information on the one surface 100b of the film 100 conveyed via the first film conveyance path 40A.

The film 100 that has passed through the roller 43b3 of the middle step portion 43B is folded back upward in the vertical direction, and is then wound around the film winding portion 44 via the rear step portion 43C (roller 43c).

Next, a case where the operator selects the second film transport path 40B will be described.
In this case, as shown in FIG. 2, the film 100 drawn out from the film manufacturing unit 10 is composed of the front stage portion 43A (roller 43a) and the other side recording roller portion 42 (roller) from the upstream side toward the downstream side in the transport direction. 42a), the middle step portion 43B (roller 43b), and the rear step portion 43C (roller 43c) are wound in this order.

After the film 100 is stretched along the common outer tangent direction of the rollers 43a2 and 43a3 constituting the front stage 43A, the film 100 is drawn downward via the roller 43a3 so as to reach the other-side recording roller 42. Wrapped. As shown in FIG. 2, only the roller 43a1 of the front stage 43A rotates counterclockwise, and the rollers 43a2 and 43a3 rotate clockwise.

The film 100 that has passed through the other-side recording roller portion 42 is wound around the rollers 43b3, 43b2, and 43b1 of the middle portion 43B in this order. At this time, as shown in FIG. 2, the rollers 43b1 and 43b2 rotate clockwise, and the roller 43b3 rotates counterclockwise.

When the second film conveyance path 40B is selected in this way, the film 100 passes through the recording unit 30 so as to go from the lower side in the vertical direction to the upper side through the other side recording roller unit 42. At this time, the film 100 is conveyed so that the other surface 100 c faces the recording unit 30. Therefore, the recording unit 30 can record defect information on the other surface 100c of the film 100 conveyed via the second film conveyance path 40B.

The film 100 that has passed through the roller 43b1 of the middle stage portion 43B is wound around the film winding portion 44 through the rear stage portion 43C (roller 43c).

As described above, in the present embodiment, one of the film transport paths in the first transport roller unit 43 is selected when the first film transport path 40A is selected and when the second film transport path 40B is selected. The conveyance direction of the film 100 is switched at the part.

That is, the first transport roller unit 43 includes the roller 43a3 and the middle stage 43B of the front stage 43A when the second film transport path 40B is selected and when the first film transport path 40A is selected. The rotation directions of the rollers 43b1 and 43b2 are switched. The rotation direction of the rollers 43a3, 43b1, and 43b2 may be switched only by driving the film winding unit 44 when, for example, each of these rollers is constituted by a driven roller. On the other hand, for example, when each of these rollers is composed of a main driving roller, a rotation driving unit (not shown) that rotates each of the rollers in accordance with the selection by the selection of the first and second film transport paths 40A and 40B. It is only necessary to switch the rotation direction.

Further, in the present embodiment, the film transport unit 40 is arranged on one side so that the distance between the defect inspection unit 20 and the recording unit 30 in the first film transport path 40A and the second film transport path 40B is equal. A recording roller unit 41, the other side recording roller unit 42, and a first transport roller unit 43 are provided. That is, the arrangement position, pitch, and the like between the

rollers

41a, 42a, 43a, 43b, and 43c constituting the one-side recording roller unit 41, the other-side recording roller unit 42, and the first transport roller unit 43 are the above conditions. Optimized to meet.

Therefore, when the film transport unit 40 records defect information on the one surface 100b in the first film transport path 40A and when it records defect information on the other surface 100c in the second film transport path 40B, the defect inspection unit 20 Thus, the time from when the defect inspection is performed until the recording of the defect information by the recording unit 30 (timing of recording the defect information by the recording unit 30) can be made the same. Therefore, it is possible to eliminate the trouble of adjusting the recording timing by the recording unit 30 in accordance with the switching between the first film transport path 40A and the second film transport path 40B. Therefore, the defect information can be accurately recorded at the predetermined position at the timing when the predetermined position of the film 100 where the defect information is detected by the defect inspection unit 20 reaches the recording unit 30.

FIG. 3 is a diagram showing a schematic configuration of the film manufacturing unit 10. As shown in FIG. 3, the film manufacturing unit 10 manufactures the said film 100 by bonding the protection films (surface protection film) 100B and 100C to the film base material 100A. The film base material 100A and the

protection films

100B and 100C may be any strip-like film having flexibility, and the material and configuration thereof are not particularly limited. Hereinafter, the

protection films

100B and 100C may be referred to as a first protection film 100B and a second protection film 100C, respectively.

As shown in FIG. 3, the film manufacturing unit 10 includes a first line 11, a second line 12, a third line 13, a fourth line 14, and a fifth line 15. The second line 12, the third line 13, and the fifth line 15 constitute a transport line for the first protection film 100B. The fourth line 14 and the fifth line 15 constitute a transport line for the second protection film 100C. Further, the first line 11, the third line 13, and the fifth line 15 constitute a transport line for the film substrate 100 A.

In each of the

lines

11, 12, 13, 14, and 15, a plurality of rolls (for example, a guide roll 31 and a nip roll 33 in the present embodiment) for forming a transport path for the film base 100A and the

protection films

100B and 100C are provided. , 34, 35, 36).

The first line 11 manufactures and transports the film substrate 100A. In the present embodiment, the film substrate 100A is a polarizing film, but the film substrate 100A is not limited thereto. In the first line 11, a dyeing process, a crosslinking process, a stretching process, and the like are performed on a PVA (Polyvinyl Alcohol) film that is a base material of a polarizer.
Thereafter, a film protective substrate 100A is manufactured by pasting a polarizer protective film made of TAC (Triacetylcellulose) or the like on both sides thereof. The film substrate 100A is not limited to a polarizing film, but may be other films such as a retardation film, a light diffusion film, a light reflecting film, a lens film, a conductive film, an insulating film, and a photosensitive film.

The 2nd line 12 unwinds and conveys the 1st protection film 100B from the 1st original fabric roll R1. In the present embodiment, the first protection film 100B is a PET (Polyethylene terephthalate) film, but the first protection film 100B is not limited to this.

The third line 13 has a pair of nip rolls 33 and 34 arranged in parallel with each other in the axial direction. A predetermined gap is formed between the pair of nip rolls 33 and 34, and the inside of the gap is a bonding position between the film base 100A and the first protection film 100B. In the gap, the film base 100A and the first protection film 100B are introduced in an overlapping manner. 100 A of film base materials and the 1st protection film 100B are sent out downstream while being pinched by the nip rolls 33 and 34. Thereby, the 1st protection film 100B is bonded by one side of 100A of film base materials.

The 4th line 14 unwinds and conveys the 2nd protection film 100C from the 2nd original fabric roll R2. In the present embodiment, the second protection film 100C is a PET (Polyethylene terephthalate) film, but the second protection film 100C is not limited to this.

5th line 15 bonds the 2nd protection film 100C on the other side (surface opposite to the surface where the 1st protection film 100B was bonded) of film substrate 100A, and conveys it. The said film 100 is manufactured by bonding the 1st protection film 100B and the 2nd protection film 100C to one side and the other side of 100 A of film base materials.

The fifth line 15 has a pair of nip rolls 35 and 36 that are arranged with their axial directions parallel to each other. A predetermined gap is formed between the pair of nip rolls 35 and 36, and the inside of the gap is a bonding position between the film base 100A and the second protection film 100C. In the gap, the film base 100A and the second protection film 100C are overlapped and introduced. 100 A of film base materials and the 2nd protection film 100C are sent out downstream while being pinched by the nip rolls 35 and 36. FIG. Thereby, the second protection film 100C is bonded to the other surface of the film base 100A.
Thus, the film manufacturing unit 10 can manufacture the film 100 by bonding the first protection film 100B and the second protection film 100C to both surfaces of the film base 100A.

As described above, according to the film manufacturing apparatus 1 according to the present embodiment, the operator changes the first film transport path 40 A or the second film transport path 40 B as the transport path of the film 100, so The defect information can be recorded on each of both the inspected and inspected defects (one side 100b and the other side 100c).
Therefore, since it becomes possible to record defect information on both sides of the film 100 with only one recording unit 30, the installation space of the apparatus can be reduced compared to the case where two recording units are provided for double-sided recording as in the past. However, the defect inspection of the film can be performed at a low cost. In addition, the film 100 on which defect information is recorded can be manufactured at a low cost.

As described above, the preferred embodiment according to the present embodiment has been described with reference to the accompanying drawings, but the present invention is not limited to the example. Various shapes, combinations, and the like of the constituent members shown in the above-described examples are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention. For example, in the said embodiment, although the case where the defect inspection part 20 arrange | positions only the downstream of the film manufacturing unit 10 was mentioned as an example, it is not limited to this, The 1st line 11 of the said film manufacturing unit 10, 2nd A defect inspection unit may be provided in the middle of at least one of the line 12 and the fourth line 14. According to this, the defect inspection in 100 A of film base materials before the

protection films

100B and 100C are bonded can be performed, and the precision improvement of the defect inspection in the film 100 is achieved.

In the above embodiment, the configuration in which the defect inspection unit 5 is incorporated in the film manufacturing apparatus 1 that inspects the film 100 manufactured by the film manufacturing unit 10 is taken as an example. It can also function as a single inspection apparatus for inspecting defects of the film manufactured in the above. In this case, the defect inspection of the film is performed by conveying the film from the raw roll to be inspected to the recording unit 30 while being unwound by the film conveying unit 40 and recording predetermined defect information, and then the film winding unit 44. It ends by being wound up by. Thus, after manufacturing the original fabric roll to be inspected, the film can be transported to another factory, and the defect inspection of the film can be performed using only the defect inspection unit 5 in the other factory.

Moreover, in the said embodiment, although the case where the 2nd conveyance roller part 45 included both the roller part 41 for one side recording and the roller part 42 for the other side recording was mentioned as an example, only one of them was included. A configuration may be adopted. For example, the 2nd conveyance roller part 45 may be comprised only from the roller part 41 for one side recording. In this case, the film 100 passing through the second film transport path 40B where defect recording is performed on the other surface 100c is transported by being wound only on the first transport roller unit 43, and defect recording is performed on the one surface 100b. The film 100 passing through the first film transport path 40A is transported by being wound around the first transport roller unit 43 and the second transport roller unit 45 (one-side recording roller unit 41).

Or the 2nd conveyance roller part 45 may be comprised only from the roller part 42 for recording on the other side. In this case, the film 100 passing through the second film transport path 40B where defect recording is performed on the other surface 100c is wound around the first transport roller unit 43 and the second transport roller unit 45 (the other surface recording roller unit 42). The film 100 that is transported and passes through the first film transport path 40 A where defect recording is performed on the one surface 100 b is transported by being wound only on the first transport roller unit 43.

DESCRIPTION OF SYMBOLS 1 ... Film manufacturing apparatus, 5 ... Defect inspection unit (defect inspection system), 10 ... Film manufacturing unit, 20 ... Defect inspection part, 30 ... Recording part, 40 ... Film conveyance part, 40A ... First film conveyance path, 40B ... Second film transport path, 41... One side recording roller section (second transport roller section), 41 a... Roller, 42... Other side recording roller section (second transport roller section), 42 a. Transport roller unit, 43a ... roller, 43b ... roller, 43c ... roller, 45 ... second transport roller unit, 50 ... control unit, 100 ... film, 100b ... one side (first surface), 100c ... other side (second) surface)

Claims

A film transport section for transporting a belt-shaped film;
A defect inspection unit for inspecting defects of the film conveyed by the film conveyance unit;
A recording unit provided on the downstream side of the defect inspection unit in the film conveyance path formed by the film conveyance unit, and capable of recording defect information on the defect detected by the defect inspection unit on the film;
The film transport unit is
A first transport roller unit around which the film is wound in each of a first mode in which the defect information is recorded on the first surface of the film and a second mode in which the defect information is recorded on a second surface by the recording unit. When,
And a second transport roller section around which the film is wound in either one of the first mode and the second mode.
The defect inspection system according to claim 1, wherein the first transport roller unit switches a transport direction of the film in a part of the film transport path in response to switching between the first mode and the second mode.
The film transport unit transports the film in a first film transport path in the first mode, transports the film in a second film transport path in the second mode, and the first film transport path and the The first transport roller unit and the second transport roller unit are installed so that distances between the defect inspection unit and the recording unit in the second film transport path are equal to each other. Described defect inspection system.
The defect inspection system according to any one of claims 1 to 3, wherein the recording unit records the defect information on the film wound around the first transport roller unit.
The defect inspection system according to any one of claims 1 to 4, wherein at least one of the first transport roller unit and the second transport roller unit includes a plurality of roller members.
A film production unit for producing a strip-shaped film;
A defect inspection unit that performs a defect inspection of the film manufactured by the film manufacturing unit,
A film manufacturing apparatus having the defect inspection system according to any one of claims 1 to 5 as the defect inspection unit.