TWI715592B - Manufacturing method of laminated optical film, manufacturing apparatus of laminated optical film, and peeling method of peeling film - Google Patents
Manufacturing method of laminated optical film, manufacturing apparatus of laminated optical film, and peeling method of peeling film Download PDFInfo
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- TWI715592B TWI715592B TW105118831A TW105118831A TWI715592B TW I715592 B TWI715592 B TW I715592B TW 105118831 A TW105118831 A TW 105118831A TW 105118831 A TW105118831 A TW 105118831A TW I715592 B TWI715592 B TW I715592B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
- G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H39/00—Associating, collating, or gathering articles or webs
- B65H39/16—Associating two or more webs
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Laminated Bodies (AREA)
- Collation Of Sheets And Webs (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
一實施形態之貼合光學膜之製造方法具備如下步驟:以使與光學膜11之寬度方向正交之第1假想平面P1之朝向固定的方式搬送光學膜;以使與保護膜13之寬度方向正交之第2假想平面P2與第1假想平面交叉之方式搬送保護膜;以使保護膜之寬度方向與第1假想平面之法線方向一致之方式,對搬送而來之保護膜之搬送方向進行變更;以及將已變更搬送方向之保護膜與搬送而來之光學膜以使相互之長度方向一致之方式連續地貼合,而形成貼合光學膜與保護膜而成之貼合光學膜10。 The manufacturing method of the laminated optical film of one embodiment includes the steps of: conveying the optical film so that the direction of the first imaginary plane P1 orthogonal to the width direction of the optical film 11 is fixed; The second imaginary plane P2 that is orthogonal to the first imaginary plane crosses the protective film; the width direction of the protective film is consistent with the normal direction of the first imaginary plane, and the conveying direction of the protective film Make changes; and continuously bond the protective film whose conveying direction has been changed and the conveyed optical film so that their longitudinal directions coincide with each other to form a laminated optical film 10 in which the optical film and the protective film are laminated .
Description
本發明係關於一種貼合光學膜之製造方法,且亦關於一種貼合光學膜之製造裝置及剝離膜之剝離方法。 The present invention relates to a manufacturing method of a laminated optical film, and also relates to a manufacturing device of a laminated optical film and a peeling method of a release film.
作為貼合光學膜,例如已知有將保護作為光學膜之偏光膜之保護膜貼合於該偏光膜而成之偏光板、或者將用以保護作為光學膜之偏光板或相位差膜之保護膜(例如防護膜)貼合於該偏光板或相位差膜而成之膜。 As a laminated optical film, for example, a polarizing plate formed by bonding a protective film to protect a polarizing film as an optical film to the polarizing film, or a protection to protect a polarizing plate or retardation film as an optical film is known A film (for example, a protective film) is laminated to the polarizing plate or retardation film.
如此,當於光學膜之厚度方向上貼合保護膜而製造貼合光學膜時,於上下方向呈並列狀地配置光學膜之搬送機構與保護膜(例如防護膜)之搬送機構(參照專利文獻1)。而且,一面向同一個方向搬送光學膜與保護膜,一面貼合該光學膜與保護膜,從而製造出貼合而成之貼合光學膜。又,例如,於自貼合有剝離膜之光學膜將剝離膜剝離之情形時,亦同樣於上下方向呈並列狀地配置光學膜之搬送機構與自光學膜剝離之剝離膜之搬送機構。 In this way, when a protective film is laminated in the thickness direction of the optical film to produce a laminated optical film, the transport mechanism of the optical film and the transport mechanism of the protective film (for example, protective film) are arranged side by side in the vertical direction (see Patent Literature 1). Furthermore, the optical film and the protective film are conveyed in the same direction, and the optical film and the protective film are laminated on the other side, thereby manufacturing a laminated optical film formed by bonding. Also, for example, when the release film is peeled from the optical film to which the release film is bonded, the transport mechanism of the optical film and the transport mechanism of the release film peeled from the optical film are also arranged side by side in the vertical direction.
[專利文獻1]日本專利特開2012-181276號公報 [Patent Document 1] Japanese Patent Laid-Open No. 2012-181276
然而,於先前技術中,當將製造貼合光學膜之裝置或自光學膜將剝離膜剝離之裝置設置於工廠時,裝置佈局之自由度降低,有時無法有效地靈活運用工廠空間。 However, in the prior art, when the device for manufacturing the laminated optical film or the device for peeling the release film from the optical film is installed in the factory, the freedom of the device layout is reduced, and sometimes the factory space cannot be effectively utilized.
因此,本發明之目的在於提供如下技術,該技術能於貼合複數個膜時,或自貼合有剝離膜之光學膜將剝離膜剝離時有效地靈活運用工廠空間。 Therefore, the object of the present invention is to provide a technology that can effectively utilize the factory space when laminating a plurality of films or peeling the peeling film from an optical film with a peeling film.
本發明之一態樣之貼合光學膜之製造方法具備:光學膜搬送步驟,其以使與光學膜之寬度方向正交之第1假想平面之朝向固定的方式搬送帶狀之光學膜;第1保護膜搬送步驟,其以使與保護膜之寬度方向正交之第2假想平面與第1假想平面交叉的方式搬送帶狀之保護膜;第1保護膜搬送方向變更步驟,其以使保護膜之寬度方向與第1假想平面之法線方向一致之方式,對於第1保護膜搬送步驟搬送而來之保護膜之搬送方向進行變更;以及貼合步驟,其將已於第1保護膜搬送方向變更步驟中變更搬送方向之保護膜、與於光學膜搬送步驟搬送而來之光學膜以使相互之長度方向一致之方式連續地貼合,而形成貼合光學膜與保護膜而成之帶狀之貼合光學膜。 A method of manufacturing a laminated optical film according to one aspect of the present invention includes: an optical film conveying step of conveying the strip-shaped optical film in a manner that fixes the direction of the first imaginary plane orthogonal to the width direction of the optical film; 1 protective film conveying step, which conveys a strip-shaped protective film such that the second imaginary plane orthogonal to the width direction of the protective film crosses the first imaginary plane; the first protective film conveying direction changing step, which protects The width direction of the film is consistent with the normal direction of the first imaginary plane, the conveying direction of the protective film from the first protective film conveying step is changed; and the laminating step, which will be conveyed on the first protective film The protective film whose conveying direction is changed in the direction changing step, and the optical film conveyed in the optical film conveying step are continuously bonded so that their longitudinal directions are aligned to form a tape formed by bonding the optical film and the protective film Lamination optical film in shape.
於上述製造方法中,以使與帶狀之光學膜之寬度方向正交之第1假想平面的朝向固定之方式搬送該帶狀之光學膜。另一方面,以使與帶狀之保護膜之寬度方向正交之第2假想平面與第1假想平面交叉的方式搬送該帶狀之保護膜,且以使保護膜之寬度方向與第1假想平面之法線方向一致之方式,對該搬送而來之保護膜之搬送方向進行變更。其後,將已變更搬送方向之保護膜與光學膜以使相互之長度方向一致之方式連續地貼合,而形成貼合光學膜與保護膜而成之帶狀之貼合光學膜。如此,由於對保護膜之搬送方向之朝向進行變更,故而製造貼合光學膜時之製造裝置之佈局之自由度提高。其結果,可有效地靈活 運用設置裝置之工廠空間。 In the above-mentioned manufacturing method, the strip-shaped optical film is conveyed so that the direction of the first imaginary plane orthogonal to the width direction of the strip-shaped optical film is fixed. On the other hand, the belt-shaped protective film is conveyed so that the second imaginary plane orthogonal to the width direction of the belt-shaped protective film crosses the first imaginary plane, and the width direction of the protective film is aligned with the first virtual plane. Change the conveying direction of the protective film from the conveying method by the way that the normal direction of the plane is consistent. After that, the protective film and the optical film whose conveying direction has been changed are continuously bonded so that their longitudinal directions coincide with each other to form a tape-shaped bonded optical film formed by bonding the optical film and the protective film. In this way, since the orientation of the conveyance direction of the protective film is changed, the degree of freedom of the layout of the manufacturing device when manufacturing the laminated optical film is improved. As a result, it can be effectively flexible Use the factory space of the installation device.
於一實施形態中,亦可於第1保護膜搬送方向變更步驟中,藉由將保護膜捲繞於以如下軸為中心旋轉之輥而對保護膜之搬送方向進行變更,上述軸為與第1保護膜搬送步驟中之保護膜之寬度方向交叉之方向的軸。 In one embodiment, in the first protective film transport direction change step, the transport direction of the protective film can be changed by winding the protective film around a roller rotating around the following axis, which is the same as the first 1 The axis of the direction in which the width direction of the protective film intersects in the protective film transport step.
於一實施形態中,亦可於第1保護膜搬送步驟中,在將帶狀之剝離膜能夠剝離地貼合於保護膜之狀態下搬送保護膜,於第1保護膜搬送方向變更步驟中,在將剝離膜貼合於保護膜之狀態下,對保護膜之搬送方向進行變更。又,亦可進而包括:剝離步驟,其連續地自於第1保護膜搬送方向變更步驟中已變更搬送方向之保護膜將剝離膜剝離;以及剝離膜搬送步驟,其以使剝離膜之寬度方向與第1假想平面之法線方向一致之方式,搬送於剝離步驟中剝離之剝離膜;且於貼合步驟中,將剝離膜已剝離之保護膜貼合於光學膜。 In one embodiment, in the first protective film transport step, the protective film may be transported in a state where the strip-shaped release film is peelably attached to the protective film, and in the first protective film transport direction change step, With the release film attached to the protective film, change the transport direction of the protective film. In addition, it may further include: a peeling step of continuously peeling the peeling film from the protective film whose conveying direction has been changed in the first protective film conveying direction changing step; and a peeling film conveying step of making the width direction of the peeling film The peeling film peeled off in the peeling step is transported in a manner consistent with the normal direction of the first imaginary plane; and in the bonding step, the protective film from which the peeling film has been peeled is bonded to the optical film.
於一實施形態中,亦可於貼合步驟中,在上述保護膜於帶狀之剝離膜能夠剝離地貼合之狀態下,以使剝離膜位於與光學膜為相反側之方式將保護膜貼合於光學膜,上述貼合光學膜之製造方法進而包括:貼合光學膜搬送步驟,其以使貼合光學膜之寬度方向與第1假想平面之法線方向一致之方式,搬送於貼合步驟中形成之貼合光學膜;剝離步驟,其自於貼合光學膜搬送步驟所搬送之貼合光學膜將剝離膜剝離;以及剝離膜搬送步驟,其以使剝離膜之寬度方向與第1假想平面之法線方向一致之方式,搬送於剝離步驟中剝離之剝離膜。 In one embodiment, in the bonding step, the protective film may be pasted so that the release film is located on the opposite side to the optical film in a state where the protective film is peelably bonded to the strip-shaped release film To the optical film, the manufacturing method of the above-mentioned laminated optical film further includes: a laminated optical film conveying step, which conveys the laminated optical film so that the width direction of the laminated optical film coincides with the normal direction of the first virtual plane The laminating optical film formed in the step; the peeling step, which peels the peeling film from the laminating optical film conveyed in the laminating optical film conveying step; and the peeling film conveying step, which makes the width direction of the peeling film and the first The normal direction of the imaginary plane is the same, and the peeling film peeled in the peeling step is transported.
亦可於上述第1保護膜搬送方向變更步驟中,將該保護膜以使保護膜之兩個面中之貼合有剝離膜之側的面於貼合有剝離膜之狀態下,與以如下軸為中心而旋轉之輥接觸之方式捲繞於該輥,藉此,對保護膜之搬送方向進行變更,上述軸為與第1保護膜搬送步驟中之保護膜之寬度方向交叉之方向的軸。 In the step of changing the conveying direction of the first protective film, the protective film may be such that the surface of the two sides of the protective film on the side where the release film is attached is in the state where the release film is attached, and the following The axis is the center and the rotating roller is in contact with the roller, thereby changing the conveying direction of the protective film. The above-mentioned axis is the axis that intersects the width direction of the protective film in the first protective film conveying step .
於上述形態中,可使用輥而對保護膜之搬送方向進行變更。自保護膜剝離之剝離膜與輥接觸。因此,即使因對搬送方向進行變更時之負載或摩擦而於剝離膜產生損傷,亦不會對貼合光學膜之光學特性產生影響。 In the above-mentioned form, the conveyance direction of a protective film can be changed using a roller. The release film peeled from the protective film is in contact with the roller. Therefore, even if the release film is damaged due to load or friction when changing the conveying direction, it will not affect the optical properties of the laminated optical film.
亦可進而包括剝離膜搬送方向變更步驟,該剝離膜搬送方向變更步驟將於上述剝離膜搬送步驟搬送而來之剝離膜之搬送方向變更為與第1假想平面交叉之方向。 It may further include a peeling film conveying direction changing step that changes the conveying direction of the peeling film from the peeling film conveying step to a direction crossing the first imaginary plane.
亦可於上述剝離膜搬送方向變更步驟中,藉由將剝離膜捲繞於以如下軸為中心旋轉之輥,而對剝離膜之搬送方向進行變更,上述軸為與剝離膜搬送步驟中之剝離膜之寬度方向交叉之方向的軸。 It is also possible to change the conveying direction of the release film by winding the release film on a roller rotating around the following axis, which is the same as the release film conveying step. The axis of the direction where the width direction of the film crosses.
於一實施形態之貼合步驟中,保護膜亦可以能夠剝離之方式貼合於光學膜。 In the bonding step of one embodiment, the protective film may be bonded to the optical film in a peelable manner.
於上述情形下,例如當將光學膜貼合於其他構件等而使用時,可於將貼合光學膜貼合於其他構件之後,自貼合光學膜將保護膜剝離。藉此,可利用保護膜保護光學膜直至將光學膜貼合於其他構件等為止。 In the above case, for example, when the optical film is bonded to another member and used, after bonding the bonded optical film to the other member, the protective film may be peeled from the bonded optical film. Thereby, the optical film can be protected by the protective film until the optical film is bonded to other members and the like.
於一實施形態中,亦可於貼合步驟中,將與保護膜不同之帶狀之第2保護膜貼合於光學膜的與貼合有保護膜之面相反之面。 In one embodiment, in the bonding step, a band-shaped second protective film different from the protective film may be bonded to the surface of the optical film opposite to the surface to which the protective film is bonded.
於一實施形態中,亦可於貼合步驟中,將保護膜能夠剝離地貼合於光學膜,並且將與保護膜不同之帶狀之第2保護膜貼合於光學膜的與貼合有保護膜之面相反之面,藉此,獲得貼合有第2保護膜之狀態下之貼合光學膜,上述貼合光學膜之製造方法進而包括:貼合光學膜搬送步驟,其以使貼合光學膜之寬度方向與第1假想平面之法線方向一致之方式搬送所獲得之貼合光學膜;剝離步驟,其自於貼合光學膜搬送步驟所搬送之貼合光學膜將保護膜剝離;以及第2保護膜搬送步驟,其以使保護膜之寬度方向與第1假想平面之法線方向一致之方 式搬送於剝離步驟中剝離之保護膜。 In one embodiment, in the bonding step, the protective film may be peelably bonded to the optical film, and a tape-shaped second protective film different from the protective film may be bonded to the optical film. The surface opposite to the protective film is used to obtain a bonded optical film in a state where the second protective film is bonded. The manufacturing method of the above-mentioned bonded optical film further includes: a bonding optical film transport step, which enables the bonding Transport the obtained laminated optical film in such a way that the width direction of the laminated optical film coincides with the normal direction of the first imaginary plane; the peeling step, which peels off the protective film from the laminated optical film transported in the laminated optical film transport step ; And the second protective film transport step, which makes the width direction of the protective film consistent with the normal direction of the first imaginary plane The protective film that is peeled off in the peeling step is conveyed in a simple manner.
亦可進而包括第2保護膜搬送方向變更步驟,該第2保護膜搬送方向變更步驟將於上述第2保護膜搬送步驟搬送而來之保護膜之搬送方向變更為與第1假想平面交叉之方向。 It may further include a second protective film conveying direction changing step, which changes the conveying direction of the protective film from the second protective film conveying step to a direction crossing the first imaginary plane .
亦可於第2保護膜搬送步驟中,藉由將保護膜捲繞於以如下軸為中心而旋轉之輥而對保護膜之搬送方向進行變更,上述軸為與第2保護膜搬送步驟中之保護膜之寬度方向交叉之方向的軸。 In the second protective film transport step, the transport direction of the protective film can be changed by winding the protective film around a roller rotating around the following axis, which is the same as the second protective film transport step. The axis of the cross direction of the width direction of the protective film.
本發明之其他態樣之貼合光學膜之製造方法包括:光學膜搬送步驟,其以使與光學膜之寬度方向正交之假想平面之朝向固定的方式搬送帶狀之光學膜;保護膜搬送步驟,其於能夠剝離地貼合有帶狀之剝離膜之狀態下,以使保護膜之寬度方向與上述假想平面之法線方向一致之方式搬送帶狀之保護膜;剝離步驟,其連續地自保護膜將剝離膜剝離;剝離膜搬送步驟,其以使剝離膜之寬度方向與上述法線方向一致之方式搬送於剝離步驟中剝離之剝離膜;剝離膜搬送方向變更步驟,其將於剝離膜搬送步驟搬送而來之剝離膜之搬送方向變更為與上述假想平面交叉之方向;以及貼合步驟,其以使相互之長度方向一致之方式,將於保護膜搬送步驟搬送而來之保護膜、與於光學膜搬送步驟搬送而來之光學膜貼合,而形成貼合光學膜與保護膜而成之帶狀之貼合光學膜,剝離步驟於貼合步驟之前或之後實施。 The manufacturing method of the laminated optical film of another aspect of the present invention includes: an optical film conveying step of conveying the strip-shaped optical film in a manner that fixes the direction of an imaginary plane orthogonal to the width direction of the optical film; and protective film conveying Step, in the state where the strip-shaped release film is peelably attached, transport the strip-shaped protective film in such a way that the width direction of the protective film is consistent with the normal direction of the above-mentioned imaginary plane; the peeling step, which is continuous The peeling film is peeled from the protective film; the peeling film conveying step, which conveys the peeling film peeled in the peeling step so that the width direction of the peeling film is consistent with the above normal direction; the peeling film conveying direction change step, it will be peeled The conveying direction of the peeling film from the film conveying step is changed to the direction that intersects the above-mentioned imaginary plane; and the laminating step, which makes the mutual length directions consistent, and the protective film conveyed in the protective film conveying step , Bonding with the optical film conveyed in the optical film conveying step to form a tape-shaped laminated optical film formed by bonding the optical film and the protective film, and the peeling step is implemented before or after the bonding step.
於上述製造方法中,以使與帶狀之光學膜之寬度方向正交之假想平面的朝向固定之方式搬送該帶狀之光學膜。又,於能夠剝離地貼合有帶狀之剝離膜之狀態下,以使保護膜之寬度方向與假想平面之法線方向一致之方式搬送帶狀之保護膜。將以上述方式搬送而來之光學膜與保護膜貼合。於將該光學膜與保護膜貼合之前或之後,自保護膜將剝離膜剝離。藉此,所製造之貼合光學膜為貼合有光學膜與保護膜且不包含剝離膜之膜。於上述製造方法中,將剝離後之剝離膜之搬送 方向變更為與上述假想平面交叉之方向。藉此,製造貼合光學膜時之製造裝置之佈局之自由度提高。其結果,可有效地靈活運用設置裝置之工廠空間。 In the above-mentioned manufacturing method, the strip-shaped optical film is conveyed so that the direction of the imaginary plane orthogonal to the width direction of the strip-shaped optical film is fixed. In addition, in a state where the strip-shaped release film is peelably attached, the strip-shaped protective film is conveyed so that the width direction of the protective film coincides with the normal direction of the imaginary plane. The optical film and the protective film conveyed in the above manner are bonded together. Before or after bonding the optical film and the protective film, the release film is peeled from the protective film. Thereby, the manufactured laminated optical film is a film in which an optical film and a protective film were bonded, and a peeling film was not included. In the above manufacturing method, the peeled film is transported The direction is changed to the direction intersecting the above imaginary plane. Thereby, the degree of freedom of the layout of the manufacturing device when manufacturing the laminated optical film is improved. As a result, it is possible to effectively utilize the plant space where the device is installed.
於在貼合步驟之前實施剝離步驟之形態中,亦可於貼合步驟中,將於剝離步驟中剝離了剝離膜後之保護膜貼合於光學膜。 In a form in which the peeling step is performed before the bonding step, in the bonding step, the protective film after the peeling film is peeled in the peeling step may be bonded to the optical film.
於在貼合步驟之後實施剝離步驟之形態中,亦可於貼合步驟中,以使剝離膜位於與光學膜為相反側之方式,於貼合有剝離膜之狀態下將保護膜貼合於光學膜,於剝離步驟中,自於貼合步驟中形成之貼合光學膜將剝離膜剝離。 In the form where the peeling step is performed after the bonding step, in the bonding step, the protective film may be bonded with the peeling film so that the release film is located on the opposite side of the optical film In the optical film, in the peeling step, the peeling film is peeled from the bonded optical film formed in the bonding step.
亦可於剝離膜搬送方向變更步驟中,藉由將剝離膜捲繞於以如下軸為中心而旋轉之輥而對剝離膜之搬送方向進行變更,上述軸為與剝離膜搬送步驟中之剝離膜之寬度方向交叉之方向的軸。 It is also possible to change the conveying direction of the release film by winding the release film on a roller rotating around the following axis, which is the release film in the release film conveying step The axis of the direction crossing the width direction.
於一實施形態之貼合步驟中,保護膜亦可以能夠剝離之方式貼合於光學膜。 In the bonding step of one embodiment, the protective film may be bonded to the optical film in a peelable manner.
於上述情形下,例如當將光學膜貼合於其他構件等而使用時,可於將貼合光學膜貼合於其他構件之後,自貼合光學膜將保護膜剝離。藉此,可利用保護膜保護光學膜直至將光學膜貼合於其他構件等為止。 In the above case, for example, when the optical film is bonded to another member and used, after bonding the bonded optical film to the other member, the protective film may be peeled from the bonded optical film. Thereby, the optical film can be protected by the protective film until the optical film is bonded to other members and the like.
於一實施形態中,亦可於貼合步驟中,將與保護膜不同之帶狀之第2保護膜貼合於光學膜的與貼合有保護膜之面相反之面。 In one embodiment, in the bonding step, a band-shaped second protective film different from the protective film may be bonded to the surface of the optical film opposite to the surface to which the protective film is bonded.
本發明之另一態樣之貼合光學膜之製造方法包括:光學膜搬送步驟,其以使與光學膜之寬度方向正交之假想平面之朝向固定的方式搬送帶狀之光學膜;第1剝離膜搬送步驟,其以使剝離膜之寬度方向與假想平面之法線方向一致之方式搬送帶狀之剝離膜;保護膜搬送步驟,其以使保護膜之寬度方向與上述法線方向一致之方式搬送帶狀之保護膜;貼合步驟,其以使相互之長度方向一致且利用剝離膜與保護 膜夾住光學膜的方式,將光學膜、剝離膜及保護膜貼合而形成貼合光學膜;貼合光學膜搬送步驟,其以使貼合光學膜之寬度方向與上述法線方向一致之方式搬送於貼合步驟中形成之貼合光學膜;剝離步驟,其自於貼合光學膜搬送步驟搬送之貼合光學膜將剝離膜剝離;第2剝離膜搬送步驟,其以使剝離膜之寬度方向與上述法線方向一致之方式搬送於剝離步驟中剝離之剝離膜;以及剝離膜搬送方向變更步驟,其將於第2剝離膜搬送步驟搬送而來之剝離膜之搬送方向變更為與假想平面交叉之方向。 A method of manufacturing a laminated optical film according to another aspect of the present invention includes: an optical film conveying step of conveying the strip-shaped optical film in a manner such that the direction of an imaginary plane orthogonal to the width direction of the optical film is fixed; The peeling film conveying step is to convey the strip-shaped peeling film in such a way that the width direction of the peeling film is consistent with the normal direction of the imaginary plane; the protective film conveying step is to make the width direction of the protective film consistent with the above normal direction The belt-shaped protective film is conveyed by the method; the laminating step is to make the mutual length direction consistent and use the peeling film and protection The optical film is sandwiched by the film, the optical film, the release film, and the protective film are bonded together to form a laminated optical film; the laminated optical film transport step is to make the width direction of the laminated optical film consistent with the above-mentioned normal direction The method of transporting the laminated optical film formed in the bonding step; the peeling step, which peels the release film from the laminated optical film transported in the bonding optical film transport step; the second release film transport step, which causes the release film to The peeling film that is peeled off in the peeling step is transported in a way that the width direction is consistent with the above normal direction; and the peeling film transport direction is changed step, which will change the transport direction of the peeling film from the second peeling film transport step to match the imaginary The direction where the plane crosses.
於上述製造方法中,以使與帶狀之光學膜之寬度方向正交之假想平面的朝向固定之方式搬送該帶狀之光學膜。又,以使帶狀之剝離膜及保護膜之寬度方向與假想平面之法線方向一致之方式搬送該帶狀之剝離膜及保護膜。以利用保護膜與剝離膜夾住光學膜之方式,將以上述方式搬送而來之光學膜、剝離膜及保護膜貼合而形成貼合光學膜。其後,自該貼合光學膜將剝離膜剝離。藉此,可製造貼合有光學膜與保護膜之貼合光學膜。於上述製造方法中,以使剝離後剝離膜之寬度方向與上述法線方向一致之方式搬送該剝離後剝離膜,其後,將剝離膜之搬送方向變更為與上述假想平面交叉之方向。藉此,製造貼合光學膜時之製造裝置之佈局之自由度提高。其結果,可有效地靈活運用設置裝置之工廠空間。 In the above-mentioned manufacturing method, the strip-shaped optical film is conveyed so that the direction of the imaginary plane orthogonal to the width direction of the strip-shaped optical film is fixed. In addition, the strip-shaped release film and the protective film are conveyed so that the width direction of the strip-shaped release film and the protective film coincides with the normal direction of the imaginary plane. The optical film, the release film, and the protective film conveyed in the above manner are bonded together to form a bonded optical film by sandwiching the optical film with the protective film and the release film. After that, the release film was peeled off from the bonded optical film. Thereby, a bonded optical film in which an optical film and a protective film are bonded can be manufactured. In the above-mentioned manufacturing method, the peeled film after peeling is transported so that the width direction of the peeled film after peeling coincides with the normal direction, and then the transport direction of the peeled film is changed to a direction crossing the virtual plane. Thereby, the degree of freedom of the layout of the manufacturing device when manufacturing the laminated optical film is improved. As a result, it is possible to effectively utilize the plant space where the device is installed.
上述光學膜亦可為對聚乙烯醇系樹脂膜實施延伸處理及交聯處理而成之偏光膜。 The above-mentioned optical film may be a polarizing film obtained by subjecting a polyvinyl alcohol-based resin film to stretching treatment and crosslinking treatment.
實施過延伸處理及交聯處理之偏光膜存在容易開裂之傾向。於此種偏光膜為光學膜之情形時,若對偏光膜之搬送方向進行變更,則存在光學膜因該變更時之影響而受到損傷之虞。相對於此,於上述製造方法中,對保護膜或剝離膜之搬送方向進行變更,因此對於光學膜,不會產生伴隨搬送方向變更之損傷。藉此,上述製造方法對於光 學膜為上述偏光膜之情形更有效。 The polarizing film that has undergone stretching treatment and cross-linking treatment tends to crack easily. When such a polarizing film is an optical film, if the transport direction of the polarizing film is changed, the optical film may be damaged due to the influence of the change. On the other hand, in the above-mentioned manufacturing method, the conveying direction of the protective film or the release film is changed, and therefore, the optical film does not suffer damage accompanying the change of the conveying direction. With this, the above-mentioned manufacturing method is It is more effective when the academic film is the above-mentioned polarizing film.
本發明之另一態樣之貼合光學膜之製造裝置包括:光學膜搬送部,其以使與光學膜之寬度方向正交之第1假想平面之朝向固定的方式搬送帶狀之光學膜;保護膜搬送部,其以使與保護膜之寬度方向正交之第2假想平面與第1假想平面交叉之方式搬送帶狀之保護膜;保護膜搬送方向變更部,其以使保護膜之寬度方向與第1假想平面之法線方向一致之方式,對保護膜搬送部所搬送而來之保護膜之搬送方向進行變更;以及貼合部,其以使相互之長度方向一致之方式,連續地將搬送方向已利用保護膜搬送方向變更部變更之保護膜、與光學膜搬送部所搬送而來之光學膜貼合,而形成貼合光學膜與保護膜而成之帶狀之貼合光學膜。 Another aspect of the manufacturing apparatus of the laminated optical film of the present invention includes: an optical film conveying section that conveys the strip-shaped optical film in a manner that fixes the direction of the first imaginary plane orthogonal to the width direction of the optical film; The protective film conveying part, which conveys the protective film in a strip form so that the second imaginary plane orthogonal to the width direction of the protective film crosses the first imaginary plane; the protective film conveying direction changing part, which makes the width of the protective film The direction is consistent with the normal direction of the first imaginary plane, and the conveying direction of the protective film from the protective film conveying section is changed; and the laminating section, which continuously matches the longitudinal direction of each other The protective film whose conveying direction has been changed by the protective film conveying direction changing section and the optical film conveyed by the optical film conveying section are bonded together to form a tape-like laminated optical film formed by bonding the optical film and the protective film .
於上述製造裝置中,藉由光學膜搬送部,以使與帶狀之光學膜之寬度方向正交之第1假想平面的朝向固定之方式搬送該帶狀之光學膜。又,藉由保護膜搬送部,以使與帶狀之保護膜之寬度方向正交之第2假想平面與第1假想平面交叉的方式搬送該帶狀之保護膜。保護膜搬送方向變更部以使保護膜之寬度方向與第1假想平面之法線方向一致之方式,對該搬送而來之保護膜之搬送方向進行變更。繼而,貼合部以使相互之長度方向一致之方式,連續地將已變更搬送方向之保護膜與光學膜貼合,而形成貼合光學膜與保護膜而成之帶狀之貼合光學膜。如此,於上述製造裝置中,對保護膜之搬送方向之朝向進行變更,因此,製造貼合光學膜時之製造裝置之佈局之自由度提高。其結果,可有效地靈活運用設置裝置之工廠空間。 In the above-mentioned manufacturing apparatus, the strip-shaped optical film is transported by the optical film transport section so that the direction of the first imaginary plane orthogonal to the width direction of the strip-shaped optical film is fixed. In addition, the protective film conveying section conveys the belt-shaped protective film so that the second virtual plane orthogonal to the width direction of the belt-shaped protective film crosses the first virtual plane. The protective film conveying direction changing section changes the conveying direction of the protective film from the conveying so that the width direction of the protective film coincides with the normal direction of the first imaginary plane. Then, the bonding part continuously bonds the protective film and the optical film whose conveying direction has been changed so that the longitudinal directions of each other are aligned, to form a tape-shaped laminated optical film formed by bonding the optical film and the protective film . In this way, in the above-mentioned manufacturing apparatus, the orientation of the conveying direction of the protective film is changed, and therefore, the degree of freedom of the layout of the manufacturing apparatus when manufacturing the laminated optical film is improved. As a result, it is possible to effectively utilize the plant space where the device is installed.
本發明之另一態樣之貼合光學膜之製造裝置包括:光學膜搬送部,其以使與上述光學膜之寬度方向正交之假想平面之朝向固定的方式搬送帶狀之光學膜;保護膜搬送部,其於能夠剝離地貼合有帶狀之剝離膜之狀態下,以使上述保護膜之寬度方向與上述假想平面之法線 方向一致之方式搬送帶狀之保護膜;剝離部,其連續地自保護膜將剝離膜剝離;剝離膜搬送部,其以使剝離膜之寬度方向與上述假想平面之法線方向一致之方式搬送剝離部所剝離之剝離膜;剝離膜搬送方向變更部,其將剝離膜搬送部所搬送而來之剝離膜之搬送方向變更為與上述假想平面交叉之方向;以及貼合部,其以使相互之長度方向一致之方式,將保護膜搬送部所搬送而來之保護膜、與光學膜搬送部所搬送而來之光學膜貼合,形成貼合光學膜與保護膜而成之帶狀之貼合光學膜。 A manufacturing apparatus for a laminated optical film according to another aspect of the present invention includes: an optical film conveying section that conveys a strip-shaped optical film in a manner that fixes the direction of an imaginary plane orthogonal to the width direction of the optical film; The film conveying section, in a state where a strip-shaped release film is peelably attached, so that the width direction of the protective film is aligned with the normal line of the virtual plane The strip-shaped protective film is conveyed in the same direction; the peeling part, which continuously peels the peeling film from the protective film; the peeling film conveying part, is conveyed in a way that the width direction of the peeling film is consistent with the normal direction of the above-mentioned imaginary plane The peeling film peeled by the peeling part; the peeling film conveying direction changing part, which changes the conveying direction of the peeling film conveyed by the peeling film conveying part to a direction that intersects the above-mentioned imaginary plane; and the laminating part, which makes mutual The length direction is the same, the protective film conveyed by the protective film conveying part and the optical film conveyed by the optical film conveying part are bonded together to form a tape-shaped sticker formed by bonding the optical film and the protective film合optical film.
於上述製造裝置中,光學膜搬送部以使與帶狀之光學膜之寬度方向正交之假想平面的朝向固定之方式搬送該帶狀之光學膜。又,保護膜搬送部於能夠剝離地貼合有帶狀之剝離膜之狀態下,以使保護膜之寬度方向與上述假想平面之法線方向一致之方式搬送帶狀之保護膜。繼而,貼合部以使相互之長度方向一致之方式,將保護膜搬送部所搬送而來之保護膜、與光學膜搬送部所搬送而來之光學膜貼合,形成貼合光學膜與保護膜而成之帶狀之貼合光學膜。上述製造裝置具有剝離部,因此,可連續地自保護膜將剝離膜剝離。而且,剝離膜搬送部以使剝離膜之寬度方向與上述假想平面之法線方向一致之方式搬送剝離後之剝離膜。其後,剝離膜搬送方向變更部以與上述假想平面交叉之方式,對剝離膜之搬送方向進行變更。可利用剝離部自保護膜將剝離膜剝離,因此,可製造貼合有光學膜與保護膜之貼合光學膜。繼而,將剝離後之剝離膜之搬送方向變更為與上述假想平面交叉之方向。藉此,製造貼合光學膜時之製造裝置之佈局之自由度提高。其結果,可有效地靈活運用設置裝置之工廠空間。 In the above-mentioned manufacturing apparatus, the optical film conveying part conveys the strip-shaped optical film so that the direction of the imaginary plane orthogonal to the width direction of the strip-shaped optical film is fixed. In addition, the protective film conveying section conveys the protective film in the form of a strip in a state where the strip-shaped release film is peelably attached so that the width direction of the protective film coincides with the normal direction of the virtual plane. Then, the laminating section aligns the protective film conveyed by the protective film conveying section and the optical film conveyed by the optical film conveying section so that the longitudinal directions of each other are aligned to form a laminated optical film and protection A tape-shaped laminated optical film made of film. The above-mentioned manufacturing apparatus has a peeling part, and therefore, the peeling film can be continuously peeled from the protective film. Furthermore, the peeling film conveyance part conveys the peeling film after peeling so that the width direction of a peeling film may correspond with the normal direction of the said virtual plane. After that, the peeling film conveying direction changing section changes the conveying direction of the peeling film so as to cross the above-mentioned virtual plane. Since the peeling film can be peeled from the protective film by the peeling part, it is possible to manufacture a bonded optical film in which the optical film and the protective film are bonded. Then, the conveying direction of the peeling film after peeling was changed to the direction crossing the said virtual plane. Thereby, the degree of freedom of the layout of the manufacturing device when manufacturing the laminated optical film is improved. As a result, it is possible to effectively utilize the plant space where the device is installed.
本發明之另一態樣之貼合光學膜之製造裝置包括:光學膜搬送部,其以使與光學膜之寬度方向正交之假想平面之朝向固定的方式搬送帶狀之光學膜;第1剝離膜搬送部,其以使剝離膜之寬度方向與上 述假想平面之法線方向一致之方式搬送帶狀之剝離膜;保護膜搬送部,其以使保護膜之寬度方向與上述法線方向一致之方式搬送帶狀之保護膜;貼合部,其以使相互之長度方向一致且利用剝離膜與保護膜夾住光學膜之方式,將光學膜、剝離膜及保護膜貼合而形成貼合光學膜;貼合光學膜搬送部,其以使貼合光學膜之寬度方向與上述法線方向一致之方式搬送貼合部所形成之貼合光學膜;剝離部,其自貼合光學膜搬送部所搬送之貼合光學膜將剝離膜剝離;第2剝離膜搬送部,其以使剝離膜之寬度方向與上述法線方向一致之方式搬送剝離部所剝離之剝離膜;以及剝離膜搬送方向變更部,其將第2剝離膜搬送部所搬送而來之剝離膜之搬送方向變更為與上述假想平面交叉之方向。 A manufacturing apparatus for a laminated optical film according to another aspect of the present invention includes: an optical film conveying section that conveys a strip-shaped optical film in a manner that fixes the direction of an imaginary plane orthogonal to the width direction of the optical film; first The peeling film conveying part, which makes the width direction of the peeling film and The strip-shaped release film is conveyed in a way that the normal direction of the imaginary plane is consistent; the protective film conveying part, which conveys the strip-shaped protective film in such a way that the width direction of the protective film is consistent with the normal direction; the laminating part, which The optical film, the release film, and the protective film are bonded together to form a bonded optical film by aligning the longitudinal directions of each other and sandwiching the optical film with the release film and the protective film; bonding the optical film conveying section to make The laminated optical film formed by the bonding part is transported in such a way that the width direction of the combined optical film is consistent with the above normal direction; the peeling part, which peels the release film from the laminated optical film transported by the laminated optical film transport part; 2 The peeling film conveying section, which conveys the peeling film peeled by the peeling section so that the width direction of the peeling film coincides with the above-mentioned normal direction; and the peeling film conveying direction changing section, which conveys the second peeling film conveying section. The conveying direction of the coming release film is changed to a direction intersecting the above-mentioned imaginary plane.
於上述製造裝置中,光學膜搬送部以使與帶狀之光學膜之寬度方向正交之假想平面的朝向固定之方式搬送該帶狀之光學膜。第1剝離膜搬送部及保護膜搬送部分別以使剝離膜及保護膜之寬度方向與上述假想平面之法線方向一致之方式搬送上述剝離膜及保護膜。貼合部以利用保護膜與剝離膜夾住光學膜之方式,將以上述方式搬送而來之光學膜、剝離膜及保護膜貼合。其後,剝離部自光學膜將貼合於光學膜之剝離膜剝離。藉此,可製造貼合有光學膜與保護膜之貼合光學膜。於上述製造裝置中,第2剝離膜搬送部以使剝離膜之寬度方向與上述法線方向一致之方式搬送剝離後之剝離膜之搬送方向,其後,剝離膜搬送方向變更部將剝離膜之搬送方向變更為與上述假想平面交叉之方向。藉此,製造貼合光學膜時之製造裝置之佈局之自由度提高。其結果,可有效地靈活運用設置裝置之工廠空間。 In the above-mentioned manufacturing apparatus, the optical film conveying part conveys the strip-shaped optical film so that the direction of the imaginary plane orthogonal to the width direction of the strip-shaped optical film is fixed. The first peeling film conveying section and the protective film conveying section respectively convey the peeling film and the protective film so that the width direction of the peeling film and the protective film coincides with the normal direction of the virtual plane. The bonding part bonds the optical film, the peeling film, and the protective film conveyed in the above manner so that the optical film is sandwiched between the protective film and the release film. After that, the peeling part peels the peeling film bonded to the optical film from the optical film. Thereby, a bonded optical film in which an optical film and a protective film are bonded can be manufactured. In the above-mentioned manufacturing apparatus, the second release film transport section transports the transport direction of the release film after peeling so that the width direction of the release film coincides with the above-mentioned normal direction. After that, the release film transport direction changing section changes the direction of the release film. The conveying direction is changed to the direction intersecting the above imaginary plane. Thereby, the degree of freedom of the layout of the manufacturing device when manufacturing the laminated optical film is improved. As a result, it is possible to effectively utilize the plant space where the device is installed.
本發明之又一態樣之剝離膜之剝離方法係自能夠剝離地貼合有帶狀之剝離膜之光學膜將剝離膜剝離之方法,其包括:光學膜搬送步驟,其以使與光學膜之寬度方向正交之假想平面之朝向固定的方式,於貼合有剝離膜之狀態下搬送光學膜;剝離步驟,其自於光學膜搬送 步驟搬送而來之光學膜將剝離膜剝離;剝離膜搬送步驟,其以使剝離膜之寬度方向與上述假想平面之法線方向一致之方式搬送於剝離步驟中剝離之剝離膜;以及剝離膜搬送方向變更步驟,其將於剝離膜搬送步驟搬送而來之剝離膜之搬送方向變更為與上述假想平面交叉之方向。 The peeling method of the peeling film of another aspect of the present invention is a method of peeling the peeling film from the optical film to which the strip-shaped peeling film is releasably attached, and includes: the optical film conveying step to make the optical film The direction of the imaginary plane perpendicular to the width direction is fixed, and the optical film is transported with the release film attached; the peeling step is from the transport of the optical film The optical film from the step of transporting peels the release film; the step of transporting the release film in which the width direction of the release film coincides with the normal direction of the above-mentioned imaginary plane; and the release film transporting the release film. The direction changing step changes the conveying direction of the peeling film from the peeling film conveying step to a direction that intersects the above-mentioned imaginary plane.
於上述剝離方法中,自能夠剝離地貼合有帶狀之剝離膜之光學膜將剝離膜剝離之後,將該剝離膜之搬送方向變更為與上述假想平面交叉之方向。藉此,自貼合有剝離膜之光學膜將剝離膜剝離之裝置之佈局的自由度提高。其結果,可有效地靈活運用設置裝置之工廠空間。 In the above-mentioned peeling method, after peeling the peeling film from the optical film to which the strip-shaped peeling film was affixed peelably, the conveyance direction of this peeling film is changed to the direction which intersects the said virtual plane. Thereby, the degree of freedom of the layout of the device for peeling the peeling film from the optical film to which the peeling film is attached is improved. As a result, it is possible to effectively utilize the plant space where the device is installed.
於一實施形態中,在光學膜搬送步驟中,光學膜亦可於貼合有帶狀之保護膜之狀態下貼合有剝離膜。 In one embodiment, in the optical film conveyance step, the optical film may be bonded with a release film in a state where a tape-shaped protective film is bonded.
於一實施形態中,亦可於剝離膜搬送方向變更步驟中,藉由將剝離膜捲繞於以如下軸為中心而旋轉之輥,對剝離膜之搬送方向進行變更,上述軸為與剝離膜搬送步驟中之剝離膜之寬度方向交叉之方向的軸。 In one embodiment, in the step of changing the transport direction of the release film, the transport direction of the release film can be changed by winding the release film around a roller that rotates around the following axis, which is the same as the release film The axis of the direction in which the width direction of the release film intersects in the transport step.
根據本發明,可提供如下技術,該技術能於貼合複數個膜時,或自貼合有剝離膜之光學膜將剝離膜剝離時,有效地靈活運用工廠空間。 According to the present invention, it is possible to provide a technology that can effectively utilize the factory space when a plurality of films are bonded, or when a release film is peeled from an optical film to which a release film is bonded.
10、10A、10B‧‧‧偏光板(貼合光學膜) 10, 10A, 10B‧‧‧Polarizing plate (bonding optical film)
11‧‧‧偏光膜(光學膜) 11‧‧‧Polarizing film (optical film)
12‧‧‧保護膜(第2保護膜) 12‧‧‧Protective film (Second protective film)
13‧‧‧保護膜 13‧‧‧Protective film
20‧‧‧積層保護膜(能夠剝離地貼合有剝離膜之保護膜) 20‧‧‧Laminated protective film (protective film with peeling film attached to it in a peelable manner)
21‧‧‧剝離膜 21‧‧‧Peeling film
30、30A、30B、30C、30D‧‧‧製造裝置(貼合光學膜之製造裝置) 30, 30A, 30B, 30C, 30D‧‧‧Manufacturing equipment (manufacturing equipment for laminating optical films)
31‧‧‧膜搬送部(光學膜搬送部) 31‧‧‧Film transport department (optical film transport department)
31a‧‧‧輥 31a‧‧‧roller
32‧‧‧膜搬送部 32‧‧‧Film Transport Department
32a‧‧‧輥 32a‧‧‧roller
33‧‧‧膜搬送部(保護膜搬送部) 33‧‧‧Film transport department (protective film transport department)
33a‧‧‧輥 33a‧‧‧roller
34‧‧‧膜搬送部(第1剝離膜搬送部) 34‧‧‧Film transport section (1st release film transport section)
34a‧‧‧輥 34a‧‧‧roller
35‧‧‧膜搬送部(貼合光學膜搬送部) 35‧‧‧Film transport section (Laminated optical film transport section)
35a‧‧‧輥 35a‧‧‧roller
36‧‧‧膜搬送部(剝離膜搬送部、第2剝離膜搬送部) 36‧‧‧Film transport section (release film transport section, second release film transport section)
36a‧‧‧輥 36a‧‧‧roller
37‧‧‧貼合部 37‧‧‧Lamination Department
37a‧‧‧輥 37a‧‧‧roller
37b‧‧‧輥 37b‧‧‧roller
38‧‧‧剝離部 38‧‧‧Striping Department
40‧‧‧積層體 40‧‧‧Layered body
40A‧‧‧積層體 40A‧‧‧Laminated body
40B‧‧‧積層體 40B‧‧‧Layered body
50‧‧‧附表面保護膜之偏光板(貼合光學膜) 50‧‧‧Polarizing plate with surface protective film (laminated optical film)
51‧‧‧偏光板(光學膜) 51‧‧‧Polarizing plate (optical film)
52‧‧‧表面保護膜(保護膜) 52‧‧‧Surface protective film (protective film)
53‧‧‧黏著劑層 53‧‧‧Adhesive layer
54‧‧‧表面保護膜(保護膜) 54‧‧‧Surface protective film (protective film)
60‧‧‧積層表面保護膜(能夠剝離地貼合有剝離膜之保護膜) 60‧‧‧Laminated surface protective film (protective film with peelable film attached)
61‧‧‧剝離膜 61‧‧‧Peeling film
70、70A、70B‧‧‧製造裝置(貼合光學膜之製造裝置) 70, 70A, 70B‧‧‧Manufacturing equipment (manufacturing equipment for laminating optical film)
71‧‧‧膜搬送部(光學膜搬送部) 71‧‧‧Film transport department (optical film transport department)
71a‧‧‧輥 71a‧‧‧roller
72‧‧‧膜搬送部(保護膜搬送部) 72‧‧‧Film Transport Department (Protective Film Transport Department)
72a‧‧‧輥 72a‧‧‧roller
73‧‧‧膜搬送部 73‧‧‧Film Transport Department
73a‧‧‧輥 73a‧‧‧roller
74‧‧‧膜搬送部(剝離膜搬送部) 74‧‧‧Film conveying part (peeling film conveying part)
74a‧‧‧輥 74a‧‧‧roller
75‧‧‧膜搬送部(貼合光學膜搬送部) 75‧‧‧Film transport section (Laminated optical film transport section)
75a‧‧‧輥 75a‧‧‧roller
76‧‧‧剝離部 76‧‧‧Stripping Department
77‧‧‧貼合部 77‧‧‧Lamination Department
77a‧‧‧輥 77a‧‧‧roller
77b‧‧‧輥 77b‧‧‧roller
A1‧‧‧方向 A1‧‧‧ direction
A2‧‧‧方向 A2‧‧‧direction
A3‧‧‧方向 A3‧‧‧ direction
A4‧‧‧方向 A4‧‧‧direction
A5‧‧‧方向 A5‧‧‧direction
A6‧‧‧方向 A6‧‧‧direction
F‧‧‧膜 F‧‧‧film
P1‧‧‧假想平面(第1假想平面) P1‧‧‧Imaginary plane (1st imaginary plane)
P2‧‧‧假想平面(第2假想平面) P2‧‧‧Virtual plane (the second virtual plane)
P3‧‧‧假想平面(第1假想平面) P3‧‧‧Virtual plane (1st imaginary plane)
P4‧‧‧假想平面(第2假想平面) P4‧‧‧Imaginary plane (2nd imaginary plane)
TB‧‧‧搬送方向變更部 TB‧‧‧Transfer direction change department
TB1‧‧‧搬送方向變更部(保護膜搬送方向變更部) TB1‧‧‧Transfer direction change section (protective film transport direction change section)
TB2‧‧‧搬送方向變更部(剝離膜搬送方向變更部) TB2‧‧‧Transfer direction change section (Release film transport direction change section)
TB3‧‧‧搬送方向變更部(保護膜搬送方向變更部) TB3‧‧‧Transfer direction change section (protective film transport direction change section)
TB4‧‧‧搬送方向變更部(剝離膜搬送方向變更部) TB4‧‧‧Transfer direction change section (Release film transport direction change section)
圖1係表示第1實施形態中之貼合光學膜之層構成之模式圖。 Fig. 1 is a schematic diagram showing the layer structure of the laminated optical film in the first embodiment.
圖2係表示用於圖1所示之貼合光學膜之製造之積層保護膜之層構成的模式圖。 Fig. 2 is a schematic diagram showing the layer structure of a laminated protective film used in the manufacture of the laminated optical film shown in Fig. 1.
圖3係用以對用於圖1所示之貼合光學膜之製造之搬送方向變更部進行說明的圖式。 Fig. 3 is a diagram for explaining a conveying direction changing part used in the manufacture of the laminated optical film shown in Fig. 1.
圖4係用以對圖1所示之貼合光學膜之製造方法進行說明之圖式。 Fig. 4 is a diagram for explaining the manufacturing method of the laminated optical film shown in Fig. 1.
圖5係用以對圖1所示之貼合光學膜之製造方法進行說明之圖式。 Fig. 5 is a diagram for explaining the manufacturing method of the laminated optical film shown in Fig. 1.
圖6係用以對圖1所示之貼合光學膜之製造方法之其他例進行說明的圖式。 Fig. 6 is a diagram for explaining another example of the manufacturing method of the bonded optical film shown in Fig. 1.
圖7係用以對圖1所示之貼合光學膜之製造方法之另一例進行說明的圖式。 FIG. 7 is a diagram for explaining another example of the manufacturing method of the bonded optical film shown in FIG. 1.
圖8係表示第1實施形態中之貼合光學膜之其他例之層構成的模式圖。 Fig. 8 is a schematic diagram showing the layer structure of another example of the bonded optical film in the first embodiment.
圖9係用以對圖8所示之貼合光學膜之製造方法進行說明之圖式。 Fig. 9 is a diagram for explaining the manufacturing method of the laminated optical film shown in Fig. 8.
圖10係表示第1實施形態中之貼合光學膜之其他例之層構成的模式圖。 Fig. 10 is a schematic diagram showing the layer structure of another example of the bonded optical film in the first embodiment.
圖11係用以對圖10所示之貼合光學膜之製造方法進行說明之圖式。 FIG. 11 is a diagram for explaining the manufacturing method of the laminated optical film shown in FIG. 10.
圖12係用以對圖10所示之貼合光學膜之製造方法進行說明之圖式。 Fig. 12 is a diagram for explaining the manufacturing method of the laminated optical film shown in Fig. 10.
圖13係表示第2實施形態中之貼合光學膜之層構成之模式圖。 Fig. 13 is a schematic diagram showing the layer structure of the laminated optical film in the second embodiment.
圖14係表示用於製造圖13所示之貼合光學膜之積層表面保護膜之層構成的模式圖。 FIG. 14 is a schematic diagram showing the layer structure of the laminated surface protective film for manufacturing the laminated optical film shown in FIG. 13.
圖15係用以對圖13所示之貼合光學膜之製造方法進行說明之圖式。 FIG. 15 is a diagram for explaining the manufacturing method of the laminated optical film shown in FIG. 13.
圖5係用以對圖13所示之貼合光學膜之製造方法進行說明之圖式。 Fig. 5 is a diagram for explaining the manufacturing method of the laminated optical film shown in Fig. 13.
圖17係用以對圖13所示之貼合光學膜之製造方法之其他例進行 說明的圖式。 Figure 17 is used to perform other examples of the manufacturing method of the laminated optical film shown in Figure 13 Illustrated schema.
圖18係用以對圖13所示之貼合光學膜之製造方法之另一例進行說明的圖式。 FIG. 18 is a diagram for explaining another example of the manufacturing method of the bonded optical film shown in FIG. 13.
以下,一面參照圖式,一面對本發明之實施形態進行說明。對相同要素附上相同符號。將重複之說明省略。圖式之尺寸比率未必與說明之物之情況一致。於說明中,「上」、「下」等表示方向之用語為基於圖式所示之狀態之方便的用語。 Hereinafter, the embodiments of the present invention will be described with reference to the drawings. The same symbols are attached to the same elements. The repeated description will be omitted. The size ratio of the drawing may not be consistent with the description. In the description, terms such as "up" and "down" indicating directions are convenient terms based on the state shown in the diagram.
(第1實施形態) (First Embodiment)
作為第1實施形態,對製造帶狀之偏光板之形態進行說明,該帶狀之偏光板具有圖1所模式性所示之剖面構成。於以下之說明中,「帶狀」係指俯視時(自厚度方向觀察時)具有固定寬度之細長之平面形狀。 As a first embodiment, a description will be given of a form of manufacturing a strip-shaped polarizing plate, which has a cross-sectional structure schematically shown in FIG. 1. In the following description, "belt-shaped" refers to a slender planar shape with a fixed width in plan view (when viewed from the thickness direction).
偏光板10具有偏光膜11與保護膜12、13。偏光板10係將保護膜12、13貼合於偏光膜11而成之貼合光學膜。偏光板10之寬度(與厚度方向正交之長度)之例為1000mm以上,長度方向之長度之例為500m~10000m。偏光板10之厚度之例為10μm以上且為200μm以下。偏光板10例如貼合於液晶單元而構成液晶面板。
The
偏光膜11為具有直線偏光特性之光學膜,該直線偏光特性係指選擇性地使於特定方向上振動之光透過之特性。偏光膜11之厚度之例為5μm~30μm。偏光膜11係藉由對成為偏光膜11之原料膜實施延伸步驟、染色處理步驟及交聯步驟而製成。
The
原料膜之例包含:聚乙烯醇(以下亦存在稱為「PVA」之情形)系樹脂膜、聚乙酸乙烯酯樹脂膜、乙烯/乙酸乙烯酯(以下存在稱為「EVA」之情形)樹脂膜、聚醯胺樹脂膜及聚酯樹脂膜。通常,根據雙色性染料之吸附性及配向性之觀點,可使用PVA系樹脂膜,尤其可 使用PVA膜。只要無特別說明,則於以下之說明中,原料膜為PVA膜。 Examples of raw film include: polyvinyl alcohol (hereinafter referred to as "PVA") resin film, polyvinyl acetate resin film, ethylene/vinyl acetate (hereinafter referred to as "EVA") resin film , Polyamide resin film and polyester resin film. Generally, from the viewpoint of the adsorption and orientation properties of dichroic dyes, PVA-based resin films can be used, especially Use PVA film. Unless otherwise specified, in the following description, the raw material film is a PVA film.
於延伸步驟中,於長度方向上對帶狀之原料膜進行單軸延伸。延伸方法亦可為乾式及濕式之延伸方法中之任一種延伸方法。延伸倍率之例為3倍~8倍。原料膜之單軸延伸可於雙色性色素染色之前、染色之同時、或染色之後進行。於在染色之後進行單軸延伸之情形時,該單軸延伸亦可於後述之交聯處理之前或交聯處理過程中進行。又,亦可於上述複數個階段進行單軸延伸。於染色處理步驟中,利用雙色性色素對原料膜進行染色。用於染色之雙色性色素之例包含碘及雙色性染料。藉由染色處理步驟,雙色性色素向原料膜之延伸方向配向而吸附於該原料膜。其結果,染色後之原料膜具有直線偏光特性。於交聯步驟中,將經由染色處理步驟之原料膜浸漬於含有交聯劑之水溶液中而進行交聯處理。交聯劑之較佳之例為硼酸,但亦可使用如硼砂般之硼化合物、乙二醛、戊二醛等其他交聯劑。該交聯處理為藉由交聯而實現耐水化或色相調整(防止帶有藍色)等之處理。 In the stretching step, the strip-shaped raw film is uniaxially stretched in the length direction. The extension method may also be any one of dry and wet extension methods. The stretch magnification is 3 to 8 times. The uniaxial stretching of the raw film can be carried out before the dyeing of the dichroic pigment, simultaneously with the dyeing, or after the dyeing. In the case of uniaxial stretching after dyeing, the uniaxial stretching may also be performed before or during the crosslinking treatment described later. Moreover, it is also possible to perform uniaxial stretching in the above-mentioned plural stages. In the dyeing treatment step, the raw film is dyed with dichroic dye. Examples of dichroic pigments used for dyeing include iodine and dichroic dyes. Through the dyeing process, the dichroic dye is aligned in the extending direction of the raw film and adsorbed on the raw film. As a result, the raw film after dyeing has linear polarization characteristics. In the cross-linking step, the raw film that has passed through the dyeing treatment step is immersed in an aqueous solution containing a cross-linking agent for cross-linking treatment. A preferred example of the crosslinking agent is boric acid, but other crosslinking agents such as boron compounds such as borax, glyoxal, and glutaraldehyde can also be used. This cross-linking treatment is a treatment to achieve water resistance or hue adjustment (to prevent bluishness) by cross-linking.
保護膜(第2保護膜)12為用以保護偏光膜11之膜。保護膜12係隔著接著劑層(未圖示)而設置於偏光膜11之單面。構成保護膜12之樹脂膜之材質例如可為如鏈狀聚烯烴系樹脂(聚丙烯系樹脂等)、環狀聚烯烴系樹脂(降莰烯系樹脂等)般之聚烯烴系樹脂;如三乙醯纖維素、二乙醯纖維素般之纖維素系樹脂;如聚對苯二甲酸乙二酯、聚對苯二甲酸丁二酯般之聚酯系樹脂;聚碳酸酯系樹脂;如甲基丙烯酸甲酯系樹脂般之(甲基)丙烯酸系樹脂;聚苯乙烯系樹脂;聚氯乙烯系樹脂;丙烯腈‧丁二烯‧苯乙烯系樹脂;丙烯腈‧苯乙烯系樹脂;聚乙酸乙烯酯系樹脂;聚偏二氯乙烯系樹脂;聚醯胺系樹脂;聚縮醛系樹脂;改性聚苯醚系樹脂;聚碸系樹脂;聚醚碸系樹脂;聚芳酯系樹脂;聚醯胺醯亞胺系樹脂;聚醯亞胺系樹脂等。又,保護膜12可為如相位差
膜、亮度提高膜般之兼具有光學功能之保護膜。保護膜12之厚度之例為10μm~200μm。
The protective film (second protective film) 12 is a film for protecting the
保護膜13與保護膜12同樣為用以保護偏光膜11之膜。保護膜13係隔著接著劑層(未圖示)而設置於偏光膜11的與設置有保護膜12之面相反之面。構成保護膜13之樹脂膜之例與保護膜12之情形相同。構成保護膜12、13之樹脂膜可相同,亦可不同。保護膜13之厚度之例亦與保護膜12相同。保護膜13之厚度可與保護膜12之厚度相同,亦可與其不同。
The
其次,對偏光板10之製造方法進行說明。以使帶狀之保護膜12、13之長度方向一致之方式,將該帶狀之保護膜12、13貼合於帶狀之偏光膜11之兩個面,藉此製造偏光板10。
Next, the manufacturing method of the
於偏光板10之製造過程中,使用圖2所模式性所示之帶狀之積層保護膜20。圖2中模式性地表示有與積層保護膜20之長度方向正交之剖面構成(或積層構造)。積層保護膜20為以使帶狀之剝離膜21與保護膜13之長度方向一致之方式,將該帶狀之剝離膜21能夠剝離地貼合於保護膜13之單面而成的膜。
In the manufacturing process of the
例如可使用單獨具有黏著性之自我黏著性樹脂膜作為剝離膜21。作為自我黏著性樹脂膜之材質,考慮到易於處理,可確保某程度之透明性,產業上可大量生產且廉價,可較佳使用聚乙烯系樹脂、聚丙烯系樹脂、聚苯乙烯系樹脂及聚對苯二甲酸乙二酯系樹脂等,較佳為使用其中具有較柔軟之性質之聚乙烯系樹脂膜。又,亦可將如下膜用作能夠剝離之膜,上述膜係使上述樹脂中之一種或兩種以上成形為單層或多層狀所得之膜。剝離膜21之厚度之例為5μm~200μm,較佳為10μm~100μm。此處,例示了自我黏著性樹脂膜作為剝離膜21,但剝離膜21亦可為具有黏著劑層之膜。
For example, a self-adhesive resin film having adhesiveness alone can be used as the
於偏光板10之製造過程中,使用圖3所模式性所示之搬送方向變
更部TB。搬送方向變更部TB為用以變更於一個方向搬送而來之膜F之搬送方向的構件。具體而言,搬送方向變更部TB為如下輥,該輥係以旋轉軸方向相對於膜F之寬度方向交叉之狀態而配置於膜F之搬送路徑上。作為搬送方向變更部TB之配置方向(旋轉軸之方向)之基準的膜F之寬度方向係指進入至搬送方向變更部TB之前的膜F之寬度方向。作為搬送方向變更部TB之輥係以轉向桿而為人所知。圖3中表示有膜F之寬度方向與搬送方向變更部TB之旋轉軸以約45°交叉之例。
In the manufacturing process of the
可使用先前眾所周知之輥作為轉向桿即搬送方向變更部TB。搬送方向變更部TB之例包含:金屬輥、橡膠輥、海綿橡膠輥、樹脂輥及碳輥等。作為金屬輥之材質,可列舉SUS304、SUS316等不鏽鋼或鋁等,作為橡膠輥之材質,可列舉矽橡膠、氟橡膠、氯丁二烯橡膠、腈橡膠等,作為海綿橡膠輥之材質,可列舉氯丁二烯、乙烯丙烯二烯橡膠等,作為樹脂輥之材質,可列舉氟樹脂等,作為碳輥之材質,可列舉碳纖維強化塑膠等。 A previously well-known roller can be used as the steering lever, that is, the conveying direction changing portion TB. Examples of the conveying direction changing portion TB include metal rollers, rubber rollers, sponge rubber rollers, resin rollers, carbon rollers, and the like. As the material of the metal roller, stainless steel or aluminum such as SUS304 and SUS316 can be cited. As the material of the rubber roller, silicone rubber, fluorine rubber, chloroprene rubber, nitrile rubber, etc. can be cited. As the material of the sponge rubber roller, there can be cited Chloroprene, ethylene propylene diene rubber, etc., as the material of the resin roller, fluororesin, etc. can be cited, and as the material of the carbon roller, carbon fiber reinforced plastic, etc. can be cited.
金屬輥、橡膠輥、樹脂輥及碳輥較佳為以使其表面粗糙度之JIS B 0601(表面粗糙度)之粗糙度曲線之最大高度成為0.1μm~1.0μm的方式研磨而成之輥。亦可於最表面形成鍍鉻層、鍍鎳層、類鑽碳等保護皮膜。即使於在最表面形成有保護皮膜之情形時,亦較佳為以使最表面之表面粗糙度的JIS B 0601(表面粗糙度)之粗糙度曲線之最大高度成為0.1μm~1.0μm之方式研磨。 Metal rollers, rubber rollers, resin rollers, and carbon rollers are preferably rollers that are ground such that the maximum height of the surface roughness of the JIS B 0601 (surface roughness) roughness curve becomes 0.1 μm to 1.0 μm. It is also possible to form a protective film such as a chromium plating layer, a nickel plating layer, and diamond-like carbon on the outermost surface. Even when a protective film is formed on the outermost surface, it is preferable to grind so that the maximum height of the roughness curve of JIS B 0601 (surface roughness) of the outermost surface is 0.1μm~1.0μm .
當使用橡膠輥時,以利用JIS K 6301之試驗方法而測定出之JIS蕭氏C刻度計,該橡膠輥之硬度較佳為約60度~90度。 When a rubber roller is used, the hardness of the rubber roller is preferably about 60 degrees to 90 degrees on a JIS Shore C scale measured by the test method of JIS K 6301.
當使用海綿橡膠輥時,較佳為以利用JIS K 6301之試驗方法而測定出之JIS蕭氏C刻度計,海綿之硬度為約20度~60度,進而為約25度~50度,密度為約0.4g/cm3~0.6g/cm3,進而為約0.42g/cm3~0.57g/cm3,且表面粗糙度之JIS B 0601(表面粗糙度)之粗糙度曲線之 最大高度為約10μm~30μm。 When using a sponge rubber roller, it is better to use the JIS Shore C scale measured by the test method of JIS K 6301. The hardness of the sponge is about 20 degrees to 60 degrees, and then about 25 degrees to 50 degrees. It is about 0.4g/cm 3 ~0.6g/cm 3 , and then about 0.42g/cm 3 ~0.57g/cm 3 , and the maximum height of the roughness curve of JIS B 0601 (surface roughness) of surface roughness is About 10μm~30μm.
利用圖4及圖5,對偏光板10之製造裝置(貼合光學膜之製造裝置)30進行說明。圖4對應於自上側觀察製造裝置30之情形。圖5對應於自側方觀察製造裝置30時之圖式。
4 and 5, the manufacturing apparatus (manufacturing apparatus for bonding optical film) 30 of the
圖4中之影線部分表示圖5中之自上方向朝下方向搬送之保護膜12。於圖5中,為了便於說明,對偏光膜11、保護膜12及積層保護膜20之厚度加以強調而圖示了該等膜。積層保護膜20具有保護膜13與剝離膜21之積層構造,但模式性地圖示為具有固定厚度之膜,於已將剝離膜21剝離之情形時,利用粗實線表示該已剝離之剝離膜21。
The hatched part in FIG. 4 represents the
為了進行說明,亦存在如下情形,即,亦將圖5中之上下方向稱為鉛垂方向,將與鉛垂方向正交之方向稱為水平方向。於圖4之說明中,亦存在基於與圖5之對應關係而利用上述鉛垂方向及水平方向之情形。 For the purpose of explanation, there are cases where the up and down direction in FIG. 5 is also referred to as the vertical direction, and the direction orthogonal to the vertical direction is referred to as the horizontal direction. In the description of FIG. 4, there are also cases where the above-mentioned vertical direction and horizontal direction are used based on the corresponding relationship with FIG. 5.
如圖4及圖5所模式性所示,製造裝置30包括:膜搬送部31、32、33、34、35、36、搬送方向變更部TB1、TB2、貼合部37及剝離部38。
As schematically shown in FIGS. 4 and 5, the
膜搬送部(光學膜搬送部)31為用以於偏光膜11之長度方向上搬送該偏光膜11之搬送機構。膜搬送部31向貼合部37搬送偏光膜11。
The film transport section (optical film transport section) 31 is a transport mechanism for transporting the
膜搬送部31具有以使旋轉軸彼此平行之方式配置之複數個輥31a。輥31a之數量並不限定於圖4及圖5所示之數量。複數個輥31a係以使其等之旋轉軸之延伸方向與偏光膜11之寬度方向一致(或與偏光膜11之長度方向正交)之方式配置。藉此,膜搬送部31以使與偏光膜11之寬度方向正交之假想平面(第1假想平面)P1之朝向實質上固定的方式搬送偏光膜11。換言之,膜搬送部31以使假想平面P1之法線方向實質上與偏光膜11之寬度方向一致之方式搬送偏光膜11。於圖5所示之形態中,偏光膜11於水平方向上搬送。於圖4及圖5中,為了便於圖
示而以固定之大小表示假想平面P1,但假想平面P1為假想之無限平面。
The film conveyance
膜搬送部32為用以於長度方向上搬送保護膜12之搬送機構。膜搬送部32向貼合部37搬送保護膜12。膜搬送部32配置於膜搬送部31所搬送之偏光膜11之單面側。於圖5所示之形態中,膜搬送部32於鉛垂方向上,配置於較偏光膜11更靠上側。
The
膜搬送部32具有以使旋轉軸彼此平行之方式配置之複數個輥32a。輥32a之數量並不限定於圖4及圖5所示之數量。複數個輥32a係以如下方式配置,即,其等之旋轉軸之延伸方向實質上與保護膜12之寬度方向一致(或實質上與保護膜12之長度方向正交),並且實質上與輥31a之旋轉軸之延伸方向平行。藉此,膜搬送部32以使保護膜12之寬度方向實質上與假想平面P1之法線方向一致的方式搬送保護膜12。
The film conveyance
膜搬送部(保護膜搬送部)33(參照圖4)為用以於長度方向上搬送積層保護膜20之搬送機構。膜搬送部33相對於膜搬送部31所搬送之偏光膜11而配置於膜搬送部32之相反側。於圖4及圖5所示之形態中,膜搬送部33於鉛垂方向上,配置於較偏光膜11更靠下側。
The film conveyance part (protective film conveyance part) 33 (refer FIG. 4) is a conveyance mechanism for conveying the laminated
膜搬送部33具有以使旋轉軸之延伸方向平行之方式配置之複數個輥33a。輥33a之數量並不限定於圖4所示之數量。複數個輥33a係以如下方式配置,即,其等之旋轉軸之延伸方向實質上與積層保護膜20之寬度方向一致(或實質上與積層保護膜20之長度方向正交),並且與輥31a之旋轉軸之延伸方向交叉(於圖4之例中為正交)。藉此,膜搬送部33以如下方式搬送積層保護膜20,該方式係指與積層保護膜20之寬度方向正交之假想平面P2之朝向實質上固定,且假想平面P2與假想平面P1交叉。於圖4中,為了便於圖示而以固定之大小表示假想平面P2,但與假想平面P1同樣地,假想平面P2為假想之無限平面。
The film conveyance
搬送方向變更部(保護膜搬送方向變更部)TB1係以如下軸為中心
而旋轉之輥(或轉向桿),該軸與膜搬送部33所搬送之積層保護膜20之寬度方向交叉。換言之,搬送方向變更部TB1為將圖3之膜F設為積層保護膜20時之搬送方向變更部TB。搬送方向變更部TB1係以使積層保護膜20之寬度方向實質上與假想平面P1之法線方向一致之方式,對搬送而來之積層保護膜20之搬送方向進行變更。於圖4中表示有如下例,即,捲繞於搬送方向變更部TB1之前的積層保護膜20之寬度方向與搬送方向變更部TB1之旋轉軸以約45°交叉。再者,當將積層保護膜20捲繞於搬送方向變更部TB1時,較佳為以使剝離膜21與搬送方向變更部TB1接觸之方式捲繞積層保護膜20。
The conveying direction changing part (protective film conveying direction changing part) TB1 is centered on the following axis
As for the rotating roller (or steering lever), the shaft crosses the width direction of the laminated
膜搬送部34為用以於長度方向上搬送如下積層保護膜20之搬送機構,該積層保護膜20之搬送方向已由搬送方向變更部TB1變更。膜搬送部34相對於膜搬送部31所搬送之偏光膜11,配置於膜搬送部32之相反側。於圖4及圖5所例示之形態中,膜搬送部34於鉛垂方向上,配置於較偏光膜11更靠下側。膜搬送部34係以使保護膜13位於偏光膜11側之方式將積層保護膜20搬送至貼合部37。
The
膜搬送部34具有以使旋轉軸之延伸方向平行之方式配置之複數個輥34a。輥34a之數量並不限定於圖5所示之數量。複數個輥34a係以如下方式配置,即,其等之旋轉軸之延伸方向實質上與積層保護膜20之寬度方向一致(或實質上與積層保護膜20之長度方向正交),並且實質上與輥31a之旋轉軸之延伸方向平行。藉此,膜搬送部34以使積層保護膜20之寬度方向實質上與假想平面P1之法線方向一致之方式搬送積層保護膜20。
The film conveyance
貼合部37具有將偏光膜11、保護膜12及積層保護膜20貼合之一對輥37a、37b。一對輥37a、37b係以使其等之旋轉軸彼此平行且與輥31a之旋轉軸之延伸方向平行的方式配置。一對輥37a、37b於偏光膜11之厚度方向上,介隔偏光膜11而相對向地配置。一對輥37a、37b只
要以如下程度分離地配置即可,該程度係指能夠對送入至其等之間的複數個膜進行按壓而使其貼合。
The
貼合部37藉由一對輥37a、37b而於厚度方向上對偏光膜11、保護膜12及積層保護膜20進行按壓,藉此,使該等膜貼合,從而連續地形成帶狀之積層體40。積層體40為將剝離膜21貼合於圖1所示之貼合光學膜即偏光板10而成之膜。
The
膜搬送部35為用以於長度方向上搬送自貼合部37送出之積層體40之搬送機構。積層體40包含第1實施形態中之貼合光學膜即偏光板10。藉此,膜搬送部35為貼合光學膜搬送部。
The film conveyance
膜搬送部35具有以使旋轉軸之延伸方向平行之方式配置之複數個輥35a。輥35a之數量並不限定於圖4及圖5所示之數量。複數個輥35a係以如下方式配置,即,其等之旋轉軸之延伸方向實質上與積層體40之寬度方向一致(或實質上與積層體40之長度方向正交),並且實質上與輥31a之旋轉軸之延伸方向平行。藉此,膜搬送部35以使積層體40之寬度方向實質上與假想平面P1之法線方向一致之方式搬送積層體40。
The film conveyance
剝離部38為自積層體40將剝離膜21剝離之輥。此種輥作為剝離輥而為人所知。剝離部38於積層體40之搬送方向上配置於貼合部37之下游,並且以與剝離膜21接觸之方式配置。
The peeling
膜搬送部(剝離膜搬送部)36為用以於長度方向上搬送剝離部38所剝離之剝離膜21之搬送機構。膜搬送部36具有以使旋轉軸彼此平行之方式配置之複數個輥36a。輥36a之數量並不限定於圖4及圖5所示之數量。複數個輥36a係以如下方式配置,即,其等之旋轉軸之延伸方向實質上與剝離膜21之寬度方向一致(或與剝離膜21之長度方向正交),並且實質上與輥31a之旋轉軸之延伸方向平行。藉此,膜搬送部36以使剝離膜21之寬度方向實質上與假想平面P1之法線方向一致之方式搬
送剝離膜21。
The film conveyance part (peel film conveyance part) 36 is a conveyance mechanism for conveying the peeling
搬送方向變更部(剝離膜搬送方向變更部)TB2係以如下軸為中心而旋轉之輥(或轉向桿),該軸與膜搬送部36所搬送之剝離膜21之寬度方向交叉。換言之,搬送方向變更部TB2為將圖3之膜F設為剝離膜21時之搬送方向變更部TB。搬送方向變更部TB2將膜搬送部36所搬送而來之剝離膜21之搬送方向變更為與假想平面P1交叉(於圖4中為正交)之方向。於圖4中表示有如下例,即,捲繞於搬送方向變更部TB2之前的剝離膜21之寬度方向與搬送方向變更部TB2之旋轉軸以約45°交叉。
The conveying direction changing part (the peeling film conveying direction changing part) TB2 is a roller (or steering lever) that rotates around an axis that intersects the width direction of the peeling
對利用有製造裝置30之偏光板之製造方法進行說明。於製造偏光板10之情形時,藉由膜搬送部31而向貼合部37搬送作為光學膜之偏光膜11(光學膜搬送步驟)。膜搬送部31以使與偏光膜11之寬度方向正交之假想平面P1之朝向固定的方式搬送偏光膜11。於該情形下,如圖4所示,當自上側觀察製造裝置30時,偏光膜11向中空箭頭所示之A1方向搬送。
The manufacturing method of the polarizing plate using the
可準備帶狀之偏光膜11作為原片輥,亦可不呈輥狀地捲繞對原料膜實施延伸步驟、染色步驟、交聯步驟而製成之偏光膜11,而是連續地供給該偏光膜11。於準備偏光膜11作為原片輥之情形時,於偏光膜11之搬送步驟中,自原片輥送出偏光膜11,膜搬送部31向貼合部37搬送偏光膜11。於不呈輥狀地捲繞對原料膜實施延伸步驟、染色步驟、交聯步驟而製成之偏光膜11,而是連續地供給該偏光膜11之情形時,將經由各步驟而獲得之偏光膜11供給至膜搬送部31,從而向貼合部37搬送。於圖5所示之形態中,偏光膜11於水平方向上搬送,但只要與偏光膜11之寬度方向正交之假想平面P1之朝向固定,則搬送路徑並不限定於朝向水平方向之搬送。
The strip-shaped
一面搬送偏光膜11,一面藉由膜搬送部32而向貼合部37搬送保護
膜12。膜搬送部32以使保護膜12之寬度方向實質上與假想平面P1之法線方向一致之方式搬送保護膜12。於圖5所示之形態中,保護膜12由複數個輥32a搬送,並且以與偏光膜11之上表面接觸之方式被搬送至貼合部37,上述複數個輥32a於鉛垂方向上,配置於較偏光膜11更靠上側。
The
通常,準備帶狀之保護膜12作為原片輥。因此,於保護膜12之搬送步驟中,自原片輥送出保護膜12,藉由膜搬送部32而向貼合部37搬送保護膜12。
Usually, a belt-shaped
一面向貼合部37搬送偏光膜11及保護膜12,一面藉由膜搬送部33而搬送帶狀之積層保護膜20(第1保護膜搬送步驟)。膜搬送部33以使與積層保護膜20之寬度方向正交之假想平面P2與假想平面P1交叉(於圖4中為正交)的方式搬送積層保護膜20。於該情形下,如圖4所示,當自上側觀察製造裝置30時,積層保護膜20向中空箭頭所示之A2方向搬送。
While conveying the
通常,準備帶狀之積層保護膜20作為原片輥。因此,於藉由膜搬送部33而搬送積層保護膜20之搬送步驟中,自原片輥送出積層保護膜20,藉由膜搬送部33而搬送積層保護膜20。
Usually, a belt-shaped laminated
藉由搬送方向變更部TB1,以使積層保護膜20之寬度方向與假想平面P1之法線方向一致之方式,對膜搬送部33所搬送而來之積層保護膜20之搬送方向進行變更(第1保護膜搬送方向變更步驟)。即,將積層保護膜20之搬送方向自A2方向變更為A1方向。於對積層保護膜20之搬送方向進行變更之步驟中,以使積層保護膜20中之剝離膜21與搬送方向變更部TB1接觸之方式,預先將積層保護膜20捲繞於搬送方向變更部TB1。藉此,即使因由搬送方向變更部TB1引起之負載或摩擦而於剝離膜21產生損傷,由於剝離膜21會於後續步驟中被剝離,故而不會對偏光板10之光學特性產生任何影響。
The conveying direction changing section TB1 changes the conveying direction of the laminated
藉由膜搬送部34而向貼合部37搬送變更搬送方向後之積層保護膜20。膜搬送部34以使積層保護膜20之寬度方向實質上與假想平面P1之法線方向一致之方式搬送積層保護膜20。膜搬送部34係以如下方式搬送積層保護膜20,即,於積層保護膜20中之保護膜13位於偏光膜11側之狀態下,將積層保護膜20送入至貼合部37。於圖5所示之形態中,以使保護膜13與偏光膜11之下表面接觸之方式,將積層保護膜20送入至貼合部37。
The laminated
如此,將偏光膜11、保護膜12及積層保護膜20於各自之長度方向一致之狀態下,連續地送入至構成貼合部37之一對輥37a、37b之間。
In this way, the
將偏光膜11、保護膜12及積層保護膜20送入至一對輥37a、37b之間後,一對輥37a、37b對其等之間的3張膜進行按壓,連續地將保護膜12及積層保護膜20貼合於偏光膜11之兩個面(貼合步驟)。藉此,形成包含偏光膜11、保護膜12及積層保護膜20之帶狀之積層體40。
After the
積層保護膜20係以使剝離膜21位於偏光膜11之相反側之方式被搬送至貼合部37。藉此,如上所述,藉由將保護膜12及積層保護膜20貼合於偏光膜11之兩個面而形成之積層體40為於作為貼合光學膜之偏光板10貼合有剝離膜21者。
The laminated
對於偏光膜11與保護膜12之接合而言,例如可預先將接著劑塗佈於該等膜中之至少一者之接合面,或者亦可於將偏光膜11及保護膜12送入至一對輥37a、37b之間之前,將接著劑塗佈於上述一對輥37a、37b之間。可利用水溶系之接著劑或紫外線硬化型之接著劑等作為接著劑。又,亦可代替接著劑而使用黏著劑。偏光膜11與積層保護膜20之接合亦相同。
For the bonding of the
當將於貼合部37形成之積層體40自貼合部37送出時,膜搬送部35以使積層體40之寬度方向實質上與假想平面P1之法線方向一致之方式搬送積層體40(貼合光學膜搬送步驟)。藉此,如圖4所示,當自上
側觀察製造裝置30時,積層體40向中空箭頭所示之A1方向搬送。
When the
其後,設置於膜搬送部35之搬送路徑上之剝離部38連續地自積層體40將剝離膜21剝離(剝離步驟)。藉此,可獲得作為貼合光學膜之偏光板10。
After that, the peeling
自積層體40將剝離膜21剝離之後,膜搬送部36以使剝離膜21之寬度方向實質上與假想平面P1之法線方向一致之方式搬送剝離膜21(剝離膜搬送步驟)。
After the
藉由搬送方向變更部TB2,以與假想平面P1交叉之方式,對膜搬送部36所搬送而來之剝離膜21之搬送方向進行變更(剝離膜搬送方向變更步驟)。具體而言,以使與剝離膜21之寬度方向正交之假想平面與假想平面P1交叉(例如正交)之方式,對剝離膜21之搬送方向進行變更。於圖4中例示有將搬送方向變更為中空箭頭A3方向之形態。以上述方式變更搬送方向後之剝離膜21被搬送固定距離之後,例如較佳為捲繞於輥。
The conveyance direction change part TB2 changes the conveyance direction of the peeling
於偏光板10之製造方法中,當自上側觀察製造裝置30時,一面向A1方向搬送偏光膜11,一面將保護膜12及積層保護膜20貼合而形成積層體40。一面進而向A1方向搬送以上述方式形成之積層體40,一面連續地將剝離膜21剝離而製造偏光板10。
In the manufacturing method of the
於偏光板10之製造方法中,進而在直至將積層保護膜20送入至貼合部37為止之搬送過程中,對積層保護膜20之搬送方向進行變更。利用圖4所示之A1方向及A2方向而具體地進行說明。
In the manufacturing method of the
如上所述,偏光膜11向A1方向被搬送。相對於此,積層保護膜20首先向與A1方向交叉(於圖4中為正交)之A2方向被搬送。其後,將積層保護膜20之搬送方向變更為A1方向。
As described above, the
偏光板10具有積層構造,因此,當將保護膜12、偏光膜11及積層保護膜20貼合時,該等膜於厚度方向上積層。因此,即使於自最初
起,將積層保護膜20之搬送方向設為A1方向之形態下,亦必需於至少直至偏光膜11及積層保護膜20之貼合部37為止之整個搬送路徑中形成多段構造,該多段構造係搬送該等膜之搬送機構於鉛垂方向上彼此重疊之多段構造。
The
於上述情形時,將偏光板之製造裝置設置於工廠時之佈局實質上已固定,無法有效地利用工廠空間。又,如將膜捲掛於搬送用之輥等般之作業或維護作業之作業效率下降。進而,針對製造裝置所具有的多段地配置有各膜之搬送機構之多段構造整體而設置空氣清潔裝置,該空氣清潔裝置具備用以將空氣中之污物、塵埃等除去之空氣過濾器(例如HEPA(High Efficiency Particulate Air,高效顆粒空氣)過濾器)等。藉此,難以於下段之膜搬送路徑中除去污物等,從而容易於所製造之偏光板中產生由污物等引起之缺陷。 In the above situation, the layout of the polarizing plate manufacturing device when installed in the factory is essentially fixed, and the factory space cannot be effectively used. In addition, the work efficiency of operations such as hanging the film roll on a conveying roller or maintenance work decreases. Furthermore, an air cleaning device is provided for the entire multi-stage structure of the manufacturing device in which the transport mechanism of each film is arranged in multiple stages. The air cleaning device is provided with an air filter for removing dirt, dust, etc. in the air (for example, HEPA (High Efficiency Particulate Air, high efficiency particulate air) filter) etc. As a result, it is difficult to remove dirt and the like in the film conveying path of the lower stage, and defects caused by dirt and the like are likely to occur in the manufactured polarizer.
相對於此,於在搬送中途對積層保護膜20之搬送方向進行變更之情形時,如圖4所示,能夠相對於偏光膜11之搬送方向(A1方向),自橫方向(A2方向)搬入積層保護膜20而使偏光膜11及積層保護膜20積層。因此,將製造裝置30設置於工廠內時之佈局之自由度高,可有效地靈活運用工廠空間。
On the other hand, when changing the conveying direction of the laminated
進而,於偏光膜11及積層保護膜20之搬送過程中,由於可形成該等膜於鉛垂方向上不重疊之搬送區域,故而膜之捲掛作業或維護作業之作業性亦提高。藉此,偏光板10之生產性亦提高。
Furthermore, during the conveying process of the
又,於偏光膜11及積層保護膜20之搬送過程中,由於可形成該等膜於鉛垂方向上不重疊之搬送區域,故而例如能夠分別針對偏光膜11及積層保護膜20而設置空氣清潔裝置。因此,可減少所製造之偏光板中含有污物,或由該污物引起之缺陷。其結果,偏光板10之製造良率高,且偏光板10之生產性亦提高。
In addition, during the conveying process of the
當將積層保護膜20捲繞於搬送方向變更部TB1而變更搬送方向
時,積層保護膜20與搬送方向變更部TB1接觸。容易因伴隨搬送方向變更部TB1對於積層保護膜20之方向變更之負載或摩擦而於與搬送方向變更部TB1接觸之表面產生損傷(例如擦傷等),但剝離膜21與搬送方向變更部TB1接觸。剝離膜21為由剝離部38剝離之膜,因此,即使因由搬送方向變更部TB1引起之負載或摩擦而於剝離膜21中產生損傷,亦不會對偏光板10之光學特性產生任何影響。藉此,使工廠之佈局之自由度提高,且亦使偏光板10之生產性提高。
When the laminated
如上所述,偏光膜11係於其製造過程中,於在延伸步驟延伸之後經過交聯步驟而製成。如此,包含延伸步驟及交聯步驟而製成之偏光膜11存在容易向一個方向開裂之傾向。藉此,例如若為了使工廠中之佈局之自由度提高而使用搬送方向變更部TB對偏光膜之搬送方向進行變更,則偏光膜容易受到損傷。相對於此,對於上述製造裝置30及利用其之製造方法而言,對積層保護膜20之搬送方向進行變更。藉此,可使工廠之佈局之自由度提高,且可使偏光板10之生產性提高。
As described above, the
於利用有製造裝置30之偏光板10之製造方法中,自積層體40將剝離膜21剝離之後,亦對剝離膜21之搬送方向進行變更。具體而言,於已自積層體40剝離之剝離膜21之搬送過程之中途,以向與假想平面P1交叉之方向前進之方式對剝離膜21之搬送方向進行變更。於圖4所示之形態中,將剝離膜21之搬送方向變更為與偏光膜11及積層體40之搬送方向大致正交之方向。
In the manufacturing method of the
剝離膜21為於自積層體40剝離之後最終被處理之膜。然而,為了將剝離膜21剝離,及為了將剝離膜21搬送至捲繞於輥之部位以例如進行處理,必需對剝離膜21施加張力。即,為了對剝離膜21施加張力,會產生固定之搬送距離。藉此,例如若積層體40之搬送方向、與剝離後之剝離膜21之搬送方向於鉛垂方向上重疊,則會導致工廠之佈局固定。相對於此,於中途對剝離膜21之搬送方向進行變更之情形
時,製造裝置30之佈局之自由度高,可更有效地靈活運用工廠空間。
The peeling
當製造薄型偏光板時,存在偏光板因於貼合部37之按壓狀態等之影響而變形,從而成為缺陷之虞。
When a thin polarizing plate is manufactured, the polarizing plate may deform due to the influence of the pressing state of the
相對於此,於第1實施形態中,利用貼合部37將積層保護膜20、偏光膜11及保護膜12貼合。繼而,自貼合有偏光膜11與積層保護膜20之積層體40將剝離膜21剝離,從而獲得偏光板10。積層保護膜20由於在保護膜13上貼合有剝離膜21,故而較保護膜13更厚。繼而,於形成積層體40之後,自積層體40將剝離膜21剝離。因此,能夠一面抑制由貼合部37引起之偏光板10之變形,一面製造薄型偏光板10。因此,可使偏光板10之生產性提高。
On the other hand, in the first embodiment, the laminated
於以上所說明之第1實施形態中,包含作為貼合光學膜之偏光板10之積層體40亦為剝離膜所貼合之光學膜。於該情形時,自貼合部37送出後之步驟對應於自貼合有剝離膜21之光學膜將剝離膜剝離之剝離方法。
In the first embodiment described above, the
(變化例1-1) (Variation 1-1)
於利用圖4及圖5而說明之偏光板之製造方法中,於自積層體40將剝離膜21剝離之後,具有對剝離膜21之搬送方向進行變更之步驟。然而,亦可不具備該步驟。即,如圖6所示之製造裝置30A所示,亦可不具備搬送方向變更部TB2。即使於該情形時,由於已對積層保護膜20之搬送方向進行變更,故而可使將製造裝置30A設置於工廠時之佈局之自由度提高。進而,亦可使偏光板10之生產性提高。
In the manufacturing method of the polarizing plate demonstrated using FIGS. 4 and 5, after peeling the peeling
(變化例1-2) (Variation 1-2)
於利用圖4及圖5而說明之偏光板之製造方法中,具有對積層保護膜20之搬送方向進行變更之步驟。然而,亦可不具備該步驟。即,如圖7所示之製造裝置30B般,可不具備搬送方向變更部TB1,亦可不具備膜搬送部33。於該情形時,只要以使積層保護膜20之寬度方向實
質上與假想平面P1之法線方向一致之方式,藉由膜搬送部34而搬送積層保護膜20即可。例如,於準備積層保護膜20作為原片輥之情形時,自原片輥送出之積層保護膜20由膜搬送部34搬送。於變化例1-2中,由於剝離膜21之搬送方向亦已變更,故而可使將製造裝置30B設置於工廠時之佈局之自由度提高。
In the manufacturing method of the polarizing plate described using FIGS. 4 and 5, there is a step of changing the conveying direction of the laminated
(變化例1-3) (Variations 1-3)
偏光板之構成並不限定於如圖1所示之於偏光膜11之兩個面貼合有保護膜12、13之形態,亦可如圖8所示之偏光板10A般,將保護膜13僅貼合於偏光膜11之單面。即,圖1所示之偏光板10亦可不具有保護膜12。
The structure of the polarizing plate is not limited to the form in which the
偏光板10A例如可由圖9所示之製造裝置30C製造。製造裝置30C除了不具備膜搬送部32以外,與製造裝置30之構成相同。於利用有製造裝置30C之偏光板之製造方法除了不具備偏光板10之製造方法中的保護膜12之搬送步驟以外,與利用有製造裝置30之偏光板之製造方法相同。由於不具備保護膜12之搬送步驟,故而於利用貼合部37之貼合步驟中,將偏光膜11與積層保護膜20貼合而形成該等膜之積層體40A。其後,於利用剝離部38之剝離步驟中,自積層體40A將剝離膜21剝離,藉此形成偏光板10A。
The
變化例1-3所說明之製造方法製造如下偏光板10A,該偏光板10A僅於偏光膜11之單面而非兩個面設置有保護膜13。藉此,可製造薄型偏光板10A,該薄型偏光板10A較於偏光膜之兩個面設置有保護膜之情形更薄。此種薄型偏光板10A例如可較佳地使用於薄型液晶顯示裝置等。
The manufacturing method described in the modified examples 1-3 manufactures the following
當製造薄型偏光板時,存在偏光板因貼合部37處之按壓狀態等之影響而變形,從而成為缺陷之虞。
When manufacturing a thin polarizing plate, the polarizing plate may be deformed due to the influence of the pressing state at the
相對於此,於變化例1-3中,利用貼合部37而將積層保護膜20與
偏光膜11貼合。繼而,自貼合有偏光膜11與積層保護膜20之積層體40A將剝離膜21剝離,從而獲得偏光板10A。積層保護膜20由於在保護膜13上貼合有剝離膜21,故而較保護膜13更厚。繼而,於形成積層體40A之後,自積層體40A將剝離膜21剝離。因此,能夠一面抑制由貼合部37引起之偏光板10A之變形,一面製造薄型偏光板10A。因此,變化例1-3之製造方法可使偏光板10之生產性提高,並且有助於製造薄型偏光板。
In contrast, in Modifications 1-3, the laminated
對於變化例1-3中之偏光板10A之製造方法,可有效地靈活運用工廠空間之方面、作業性提高之方面及偏光板10A之生產性提高之方面如利用圖4及圖5而進行之說明所述。
Regarding the manufacturing method of the
該變化例1-3亦與變化例1-1同樣地,亦可不具備對剝離膜21之搬送方向進行變更之步驟。或者,與變化例1-2同樣地,亦可不具備對積層保護膜20之搬送方向進行變更之步驟。
This modification 1-3 is also the same as modification 1-1, and the step of changing the conveyance direction of the
(變化例1-4) (Variations 1-4)
與變化例1-3相反,偏光板亦可為如圖10所示之偏光板10B般於偏光膜11貼合有保護膜12之構成。為了對製造步驟之差異進行說明,分開地對偏光板10A與偏光板10B進行說明,但偏光板10A與偏光板10B實質上相同。
Contrary to Modification 1-3, the polarizing plate may also have a configuration in which a
偏光板10B例如可由圖11及圖12所示之製造裝置30D製造。製造裝置30D之構成與製造裝置30A相同。然而,利用有製造裝置30D之製造方法與偏光板10之製造方法之不同點在於:代替帶狀之積層保護膜20而使用未貼合有剝離膜之帶狀之保護膜13。
The
根據上述不同點,於利用有製造裝置30D之偏光板之製造方法中,膜搬送部33搬送保護膜13,搬送方向變更部TB1對保護膜13之搬送方向進行變更,進而,膜搬送部34亦搬送保護膜13。繼而,貼合部37將保護膜12、偏光膜11及保護膜13貼合而形成積層體40B。於利用
貼合部37之貼合步驟中,將保護膜13能夠剝離地貼合於偏光膜11而形成積層體40B。只要預先對用以使偏光膜11與保護膜13接著之接著劑之接著力進行調整即可達成此舉。又,亦可使用如下之表面保護膜(防護膜)作為保護膜13,該表面保護膜(防護膜)於與偏光膜11貼合之側具有黏著劑。
Based on the above differences, in the manufacturing method of the polarizing plate using the
其後,剝離部38自積層體40B將保護膜13剝離,膜搬送部36搬送剝離後之保護膜13,搬送方向變更部TB2進而對保護膜13之搬送方向進行變更。於該製造方法中,藉由自積層體40B將保護膜13剝離而獲得偏光板10B。圖12之影線部表示搬送方向被搬送方向變更部TB2變更後之保護膜13。
After that, the peeling
膜搬送部33亦搬送保護膜13,因此,藉由膜搬送部36搬送保護膜13之搬送步驟可視為第2保護膜搬送步驟。同樣地,搬送方向變更部TB1亦對保護膜13之搬送方向進行變更,因此,藉由搬送方向變更部TB2而對保護膜13之搬送方向進行變更之步驟可視為第2保護膜搬送方向變更步驟。
The
偏光膜11及保護膜12薄,因此,例如若欲僅將上述兩個膜貼合,則與變化例1-3中所說明之情形同樣地,亦會存在如下情形,即,貼合而形成之偏光板因一對輥37a、37b之按壓力而變形,從而產生由該變形引起之缺陷。
The
相對於此,於利用製造裝置30D而製造偏光板10B之情形時,保護膜13亦一併被貼合,因此,保護膜13作為將偏光膜11及保護膜12貼合時之加強用之膜而發揮功能。藉此,於將偏光膜11及保護膜12貼合而形成積層體40B之情形時,構成積層體40B之一部分之偏光板10B不易產生變形等。
On the other hand, when the
又,形成積層體40B之後,自積層體40B將保護膜13剝離。因此,所製造之偏光板10B具有圖10所示之構成,與於偏光膜11之兩個
面貼合有保護膜之情形相比較,實現了薄型化。即,於變化例1-4所說明之製造方法中,能夠一面抑制由貼合部37引起之偏光板10B之變形,一面製造薄型偏光板10B。換言之,變化例1-4之製造方法可使偏光板10之生產性提高,並且有助於製造薄型偏光板。
Furthermore, after the
變化例1-4亦係於貼合部37之貼合步驟之前,對最終剝離之保護膜13之搬送方向進行變更。因此,與偏光板10之製造方法之情形同樣地,將製造裝置30D設置於工廠時之佈局之自由度提高。進而,即使因搬送方向變更部TB1而於保護膜13中產生損傷,亦不會對偏光板10B之光學特性產生任何影響,因此,偏光板10B之生產效率提高。進而,於貼合步驟之後,在中途對自積層體40B剝離之保護膜13之搬送方向進行變更,因此,根據該點,將製造裝置30D設置於工廠時之佈局之自由度亦會提高。
In the modified example 1-4, before the bonding step of the
如上所述,於變化例1-4中,自積層體40B將保護膜13剝離,因此,保護膜13可視為一種剝離膜。藉此,例如亦可代替保護膜13而使用剝離膜21。
As described above, in Modifications 1-4, the
變化例1-4亦與變化例1-1同樣地,於貼合之後,亦可不具備對已剝離之保護膜13之搬送方向進行變更之步驟。或者,亦可與變化例1-2同樣地,於貼合之前,不具備對保護膜13之搬送方向進行變更之步驟。
Modification 1-4 is also the same as Modification 1-1, and after bonding, the step of changing the conveying direction of the peeled
(變化例1-5) (Variations 1-5)
將如下形態作為變化例1-5而進行說明,該形態係指代替變化例1-4中之保護膜13而使用剝離膜21,並且與變化例1-2同樣地,於貼合之前,不對剝離膜21之搬送方向進行變更。
The following form will be described as Modified Example 1-5, which means that the
於上述情形時,以使剝離膜21之寬度方向實質上與假想平面P1之法線方向一致之方式,藉由膜搬送部34而搬送剝離膜21。藉此,膜搬送部34作為搬送剝離膜21之第1剝離膜搬送部而發揮功能,藉由膜
搬送部34而搬送剝離膜21之搬送步驟可視為第1剝離膜搬送步驟。又,膜搬送部36作為搬送已剝離之剝離膜之第2剝離膜搬送部而發揮功能,藉由膜搬送部36而搬送剝離膜21之搬送步驟可視為第2剝離膜搬送步驟。進而,如利用圖4及圖5進行之說明所述,搬送方向變更部TB2作為剝離膜21之搬送方向變更部而發揮功能,藉由搬送方向變更部TB2而對剝離膜21之搬送方向進行變更之步驟可視為剝離膜搬送方向變更步驟。
In the above case, the
變化例1-5對應於如下形態,即,代替變化例1-4中之保護膜13而使用剝離膜21,且於貼合之前,不對剝離膜21之搬送方向進行變更,因此,具有與變化例1-4相同之作用效果。
Modifications 1-5 correspond to the following form, that is, instead of the
(第2實施形態) (Second Embodiment)
將如下形態作為第2實施形態而進行說明,該形態係製造具有圖13所模式性所示之剖面構成的帶狀之附表面保護膜之偏光板50者。附表面保護膜之偏光板50例如藉由貼合於液晶單元而構成液晶面板。
The following form will be described as the second embodiment, which is a form of manufacturing a strip-shaped
如圖13所示,附表面保護膜之偏光板50為包括偏光板51與表面保護膜(防護膜)52之貼合光學膜。帶狀之附表面保護膜之偏光板50的寬度方向之長度及長度方向之長度之例可與偏光板10之情形相同。附表面保護膜之偏光板50之厚度之例為50μm~300μm。
As shown in FIG. 13, the
偏光板51為具有直線偏光特性之第2實施形態中之光學膜。偏光板51可為第1實施形態所製造之偏光板10、10A、10B。
The
表面保護膜52為單獨具有黏著性之自我黏著性樹脂膜、於單面形成有黏著劑層53之膜等,且能夠剝離地貼合於偏光板51。圖13中表示了於單面形成有黏著劑層53之表面保護膜。表面保護膜52之厚度之例可與保護膜12、13相同。表面保護膜52之材料之例為聚乙烯、聚丙烯、聚苯乙烯及聚酯。表面保護膜52為如下膜,其於貼合有附表面保護膜之偏光板50之液晶單元等作為液晶顯示裝置而流通至市場時,亦
可自附表面保護膜之偏光板50被剝離。
The
黏著劑層53之厚度之例為5μm~30μm。構成黏著劑層53之黏著劑之例包含丙烯酸系黏著劑、環氧系黏著劑、胺基甲酸酯系黏著劑及矽酮系黏著劑。
An example of the thickness of the
於以下之說明中,只要無特別說明,則於表面保護膜52之單面形成有黏著劑層53。當自附表面保護膜之偏光板50將表面保護膜52剝離時,黏著劑層53亦一併被剝離。因此,於以下之說明中,亦將形成有黏著劑層53之表面保護膜52稱為表面保護膜54。再者,於單面形成有黏著劑層53之表面保護膜52亦為一種附黏著劑層之剝離膜。
In the following description, unless otherwise specified, the
其次,對附表面保護膜之偏光板50之製造方法進行說明。以使帶狀之表面保護膜54與帶狀之偏光板51之長度方向一致之方式,將帶狀之表面保護膜54貼合於帶狀之偏光板51之單面,藉此製造附表面保護膜之偏光板50。
Next, the manufacturing method of the
於附表面保護膜之偏光板50之製造過程中,使用如圖14模式性所示之帶狀之積層表面保護膜60。圖14模式性地表示與積層表面保護膜60之長度方向正交之剖面構成(或積層構造)。積層表面保護膜60包含表面保護膜54與帶狀之剝離膜61。
In the manufacturing process of the
剝離膜61為能夠剝離地貼合於表面保護膜54之膜。如圖14所示,剝離膜61貼合於表面保護膜54中之黏著劑層53。剝離膜61之例可與剝離膜21相同。
The peeling
利用圖15及圖16,對附表面保護膜之偏光板50之製造裝置70進行說明。圖15對應於自上側觀察附表面保護膜之偏光板50之製造裝置70之情形。圖16對應於自側方觀察製造裝置70之情形。
The
於圖16中,為了便於說明,對偏光板51及積層表面保護膜60之厚度加以強調而圖示該偏光板51及積層表面保護膜60。積層表面保護膜60具有表面保護膜54及剝離膜61之積層構造,但模式性地圖示為具
有固定厚度之膜,於已將剝離膜61剝離之情形時,利用粗實線表示該已剝離之剝離膜61。為了進行說明,亦存在如下情形,即,於圖16中,亦將上下方向稱為鉛垂方向,將與鉛垂方向正交之方向稱為水平方向。於圖15之說明中,亦存在基於與圖16之對應關係而利用上述鉛垂方向及水平方向之情形。
In FIG. 16, for convenience of description, the thickness of the
如圖15及圖16模式性所示,製造裝置70包括:膜搬送部71、72、73、74、75、搬送方向變更部TB3、TB4、剝離部76及貼合部77。
As shown schematically in FIGS. 15 and 16, the
膜搬送部(光學膜搬送部)71為用以於偏光板51之長度方向上搬送該偏光板51之搬送機構。膜搬送部71向貼合部77搬送偏光板51。
The film conveying part (optical film conveying part) 71 is a conveying mechanism for conveying the
膜搬送部71具有以使旋轉軸彼此平行之方式配置之複數個輥71a。輥71a之數量並不限定於圖15及圖16所示之數量。複數個輥71a係以使其等之旋轉軸之延伸方向實質上與偏光板51之寬度方向一致(或與偏光板51之長度方向正交)之方式配置。藉此,膜搬送部71以使與偏光板51之寬度方向正交之假想平面(第1假想平面)P3之朝向固定的方式搬送偏光板51。換言之,膜搬送部71以使假想平面P3之法線方向實質上與偏光板51之寬度方向一致之方式搬送偏光板51。於圖15及圖16中,為了便於圖示而以固定之大小表示假想平面P3,但假想平面P3為假想之無限平面。
The film conveyance
膜搬送部(保護膜搬送部)72(參照圖15)為用以於積層表面保護膜60之長度方向上搬送該積層表面保護膜60之搬送機構。膜搬送部72具有以使旋轉軸之延伸方向平行之方式配置之複數個輥72a。輥72a之數量並不限定於圖15所示之數量。
The film conveyance part (protective film conveyance part) 72 (refer FIG. 15) is a conveyance mechanism for conveying the laminated
複數個輥72a係以如下方式配置,即,其等之旋轉軸之延伸方向實質上與積層表面保護膜60之寬度方向一致(或與積層表面保護膜60之長度方向正交),並且與輥71a之旋轉軸之延伸方向交叉(於圖15之
例中為正交)。藉此,膜搬送部72以如下方式搬送積層表面保護膜60,該方式係指與積層表面保護膜60之寬度方向正交之假想平面(第2假想平面)P4之朝向固定,且假想平面P4與假想平面P3交叉。於圖15中,為了便於圖示而以固定之大小表示假想平面P4,但與假想平面P3同樣地,假想平面P4為假想之無限平面。
The plurality of
搬送方向變更部(保護膜搬送方向變更部)TB3係以如下軸為中心而旋轉之輥(或轉向桿),該軸與膜搬送部72所搬送之積層表面保護膜60之寬度方向交叉。換言之,搬送方向變更部TB3為將圖3之膜F設為積層表面保護膜60時之搬送方向變更部TB。搬送方向變更部TB3係以使積層表面保護膜60之寬度方向實質上與假想平面P3之法線方向一致之方式,對搬送而來之積層表面保護膜60之搬送方向進行變更。於圖15中表示有如下例,即,捲繞於搬送方向變更部TB3之前的積層表面保護膜60之寬度方向與搬送方向變更部TB3之旋轉軸以約45°交叉。再者,當將積層表面保護膜60捲繞於搬送方向變更部TB3時,較佳為以使剝離膜61與搬送方向變更部TB3接觸之方式捲繞積層表面保護膜60。
The conveying direction changing unit (protective film conveying direction changing unit) TB3 is a roller (or steering lever) that rotates around an axis that intersects the width direction of the laminated surface
膜搬送部73為用以於積層表面保護膜60之長度方向上搬送該積層表面保護膜60之搬送機構,該積層表面保護膜60之搬送方向已由搬送方向變更部TB3變更。膜搬送部73具有以使旋轉軸之延伸方向平行之方式配置之複數個輥73a。輥73a之數量並不限定於圖15及圖16所示之數量。
The
複數個輥73a係以如下方式配置,即,其等之旋轉軸之延伸方向實質上與積層表面保護膜60之寬度方向一致(或與積層表面保護膜60之長度方向正交),並且實質上與輥71a之旋轉軸之延伸方向平行。藉此,膜搬送部73以使積層表面保護膜60之寬度方向實質上與假想平面P3之法線方向一致之方式搬送積層表面保護膜60。
The plurality of
如下所述,於膜搬送部73之積層表面保護膜60之搬送路徑中設置有剝離部76,自積層表面保護膜60將剝離膜61剝離。藉此,藉由膜搬送部73,將剝離膜61已自積層表面保護膜60剝離之狀態下之積層表面保護膜60即表面保護膜54送入至貼合部77。
As described below, a
剝離部76為自積層表面保護膜60將剝離膜61剝離之輥。此種輥作為剝離輥而為人所知。剝離部76於積層表面保護膜60之搬送過程中,以與剝離膜61接觸之方式配置。
The peeling
膜搬送部(剝離膜搬送部)74為用以於剝離膜61之長度方向上搬送該剝離膜61之搬送機構,該剝離膜61已由剝離部76剝離。膜搬送部74具有以使旋轉軸彼此平行之方式配置之複數個輥74a。輥74a之數量並不限定於圖15及圖16所示之數量。
The film conveying part (peeling film conveying part) 74 is a conveying mechanism for conveying the peeling
複數個輥74a係以如下方式配置,即,其等之旋轉軸之延伸方向實質上與剝離膜61之寬度方向一致(或與剝離膜61之長度方向正交),並且實質上與輥71a之旋轉軸之延伸方向平行。藉此,膜搬送部74以使剝離膜61之寬度方向實質上與假想平面P3之法線方向一致之方式搬送剝離膜61。
The plurality of
搬送方向變更部(剝離膜搬送方向變更部)TB4係以如下軸為中心而旋轉之輥(或轉向桿),該軸與膜搬送部74所搬送之剝離膜61之寬度方向交叉。換言之,搬送方向變更部TB4為將圖3之膜F設為剝離膜61時之搬送方向變更部TB。搬送方向變更部TB4係以與假想平面P3交叉之方式對搬送而來之剝離膜61之搬送方向進行變更。於圖15中表示有如下例,即,捲繞於搬送方向變更部TB4之前的剝離膜61之寬度方向與搬送方向變更部TB4之旋轉軸以約45°交叉。
The conveying direction changing section (release film conveying direction changing section) TB4 is a roller (or steering lever) that rotates around an axis that intersects the width direction of the
貼合部77具有將偏光板51及表面保護膜52貼合之一對輥77a、77b。一對輥77a、77b係以使其等之旋轉軸彼此平行且與輥71a之旋轉軸之延伸方向平行的方式配置。一對輥77a、77b於偏光板51之厚度方
向上,介隔偏光板51而相對向地配置。一對輥77a、77b只要以如下程度分離地配置即可,該程度係指能夠對送入至其等之間的複數個膜進行按壓而使其貼合。
The
貼合部77藉由一對輥77a、77b而於厚度方向上對偏光板51及表面保護膜52進行按壓,藉此,使上述偏光板51及表面保護膜52貼合,從而形成作為貼合光學膜之附表面保護膜之偏光板50。
The
膜搬送部(貼合光學膜搬送部)75為用以於自貼合部77送出的附表面保護膜之偏光板50之長度方向上搬送該附表面保護膜之偏光板50的搬送機構。膜搬送部75具有以使旋轉軸之延伸方向平行之方式配置之複數個輥75a。輥75a之數量並不限定於圖15及圖16所示之數量。
The film conveyance part (bonding optical film conveyance part) 75 is a conveyance mechanism for conveying the
複數個輥75a係以如下方式配置,即,其等之旋轉軸之延伸方向實質上與附表面保護膜之偏光板50之寬度方向一致(或與附表面保護膜之偏光板50之長度方向正交),並且實質上與輥71a之旋轉軸之延伸方向平行。藉此,膜搬送部75以使附表面保護膜之偏光板50之寬度方向實質上與假想平面P3之法線方向一致之方式搬送附表面保護膜之偏光板50。
The plurality of
對利用有製造裝置70之附表面保護膜之偏光板之製造方法進行說明。於製造附表面保護膜之偏光板50之情形時,膜搬送部71向貼合部77搬送作為光學膜之偏光板51(光學膜搬送步驟)。膜搬送部71以使與偏光板51之寬度方向正交之假想平面P3之朝向固定的方式搬送偏光板51。於該情形下,如圖15所示,當自上側觀察製造裝置70時,偏光板51向中空箭頭所示之A4方向被搬送。
The manufacturing method of the polarizing plate with a surface protection film using the
於帶狀之偏光板51為第1實施形態所說明之偏光板10、10A、10B之情形時,膜搬送部71可為如下搬送機構,該搬送機構實質上與在第1實施形態中製造偏光板10、10A、10B之後,對該等偏光板進行搬送之搬送機構相同。或者,於準備偏光板51作為原片輥之情形時,於偏
光板51之搬送步驟中,自原片輥送出偏光板51,膜搬送部71向貼合部77搬送偏光板51。
When the strip-shaped
如圖16所示,只要以使與偏光板51之寬度方向正交之假想平面P3之朝向固定的方式進行搬送,則偏光板51之搬送路徑並無特別限定。
As shown in FIG. 16, as long as the direction of the imaginary plane P3 orthogonal to the width direction of the
一面搬送偏光板51,一面藉由膜搬送部72而搬送帶狀之積層表面保護膜60(第1保護膜搬送步驟)。膜搬送部72以使與積層表面保護膜60之寬度方向正交之假想平面P4與假想平面P3交叉(於圖15中為正交)之方式搬送積層表面保護膜60。於該情形下,如圖15所示,當自上側觀察製造裝置70時,積層表面保護膜60向中空箭頭所示之A5方向被搬送。
While conveying the
通常,準備帶狀之積層表面保護膜60作為原片輥。因此,於利用膜搬送部72而搬送積層表面保護膜60之步驟中,自原片輥送出積層表面保護膜60,藉由膜搬送部72而搬送積層表面保護膜60。
Usually, a belt-shaped laminated
藉由搬送方向變更部TB3,以使積層表面保護膜60之寬度方向與假想平面P3之法線方向一致之方式,對膜搬送部72所搬送而來之積層表面保護膜60之搬送方向進行變更(第1保護膜搬送方向變更步驟)。於對積層表面保護膜60之搬送方向進行變更之步驟中,以使積層表面保護膜60中之剝離膜61與搬送方向變更部TB3接觸之方式,預先將積層表面保護膜60捲繞於搬送方向變更部TB3。藉此,即使因由搬送方向變更部TB3引起之負載或摩擦而於剝離膜61中產生損傷,由於剝離膜61會於後續步驟中被剝離,故而不會對附表面保護膜之偏光板50之光學特性產生任何影響。
The conveying direction changing section TB3 changes the conveying direction of the laminated surface
藉由膜搬送部73而向貼合部77搬送變更搬送方向後之積層表面保護膜60。膜搬送部73以使積層表面保護膜60之寬度方向實質上與假想平面P3之法線方向一致之方式搬送積層表面保護膜60。
The laminated
於上述搬送過程中,藉由剝離部76而連續地自積層表面保護膜60將剝離膜61剝離(剝離步驟)。藉此,於膜搬送部73之搬送過程中,在藉由剝離部76而實施剝離步驟之後,藉由膜搬送部73而搬送表面保護膜54即於單面形成有黏著劑層53之表面保護膜52。
In the above-mentioned conveyance process, the peeling
膜搬送部73以使黏著劑層53位於偏光板51側之方式向貼合部77搬送表面保護膜54。又,膜搬送部73於將表面保護膜54送入至貼合部77時,以使偏光板51及表面保護膜54之長度方向一致且其等之搬送方向一致之方式搬送表面保護膜54。於圖16中,以使黏著劑層53與偏光板51之下表面接觸之方式,由表面保護膜54搬送貼合部77。
The film conveyance
自積層表面保護膜60將剝離膜61剝離之後,藉由膜搬送部74,以使剝離膜61之寬度方向實質上與假想平面P3之法線方向一致之方式搬送剝離膜61。
After the
藉由搬送方向變更部TB4,以與假想平面P3交叉之方式,對膜搬送部74所搬送而來之剝離膜61之搬送方向進行變更。具體而言,以使與剝離膜61之寬度方向正交之假想平面與假想平面P3交叉(例如正交)之方式,對剝離膜61之搬送方向進行變更。於圖15中,將剝離膜61之搬送方向變更為中空箭頭A6方向。以上述方式變更搬送方向後之剝離膜61被搬送固定距離之後,例如較佳為捲繞於輥。
The conveyance direction change part TB4 changes the conveyance direction of the peeling
構成貼合部77之一對輥77a、77b對連續地送入其等之間的偏光板51及表面保護膜52進行按壓,藉此,將表面保護膜54貼合於偏光板51(貼合步驟)。藉此,形成經由黏著劑層53而貼合有偏光板51及表面保護膜52之附表面保護膜之偏光板50。
The pair of
以使附表面保護膜之偏光板50之寬度方向實質上與假想平面P3之法線方向一致之方式,利用膜搬送部75而搬送所製造之附表面保護膜之偏光板50。膜搬送部75所搬送之附表面保護膜之偏光板50為帶狀。因此,膜搬送部75所搬送之附表面保護膜之偏光板50亦可捲繞於
輥。或者,亦可繼而進行將帶狀之附表面保護膜之偏光板50加工(例如切斷)為所期望之大小的步驟。
The
於利用有製造裝置70之附表面保護膜之偏光板50之製造方法中,如圖15所示,當自上側觀察製造裝置70時,一面向A4方向搬送偏光板51,一面將偏光板51及表面保護膜54貼合而形成附表面保護膜之偏光板50。於附表面保護膜之偏光板50之製造方法中,進而在直至將表面保護膜54送入至貼合部77為止之搬送過程中,對包含表面保護膜54之積層表面保護膜60之搬送方向進行變更。利用圖15所示之A4方向及A5方向而具體地進行說明。
In the manufacturing method of the
如上所述,偏光板51向A4方向被搬送。相對於此,積層表面保護膜60首先向與A4方向交叉(於圖15中為正交)之A5方向搬送。其後,以使積層表面保護膜60之寬度方向與假想平面P3正交之方式,對積層表面保護膜60之搬送方向進行變更。
As described above, the
因此,利用製造裝置70之附表面保護膜之偏光板50之製造方法至少具有與第1實施形態之利用有製造裝置30之偏光板10之製造方法相同之作用效果。即,製造裝置70之佈局之自由度高,可有效地靈活運用設置製造裝置70之工廠空間。又,作業性亦佳,並且亦可使附表面保護膜之偏光板50之生產性提高。
Therefore, the manufacturing method of the
當將積層表面保護膜60捲繞於搬送方向變更部TB3而變更搬送方向時,剝離膜61與搬送方向變更部TB3接觸。因此,亦具有與第1實施形態之情形中的將剝離膜21捲繞於搬送方向變更部TB1時相同之作用效果。
When the layered
又,於利用製造裝置70之附表面保護膜之偏光板50之製造方法中,於自積層表面保護膜60將剝離膜61剝離之後,亦對剝離膜61之搬送方向進行變更。藉此,與第1實施形態中之對剝離後之剝離膜21之搬送方向進行變更的情形同樣地,製造裝置70之佈局之自由度進一步
提高,可更有效地靈活運用工廠空間。
Moreover, in the manufacturing method of the
(變化例2-1) (Variation 2-1)
於利用圖15及圖16而說明之偏光板之製造方法中,亦可於自積層表面保護膜60將剝離膜61剝離之後,具備對剝離膜61之搬送方向進行變更之步驟。然而,亦可不具備該步驟。即,亦可如圖17所示之製造裝置70A般不具備搬送方向變更部TB4。即使於該情形時,亦對積層表面保護膜60之搬送方向進行變更,因此,可使將製造裝置70A設置於工廠時之佈局之自由度提高。進而,亦可使附表面保護膜之偏光板50之生產性提高。
In the manufacturing method of the polarizing plate demonstrated using FIG. 15 and FIG. 16, after peeling the peeling
(變化例2-2) (Modification 2-2)
於利用圖15及圖16而說明之偏光板之製造方法中,具有對積層表面保護膜60之搬送方向進行變更之步驟。然而,亦可不具備該步驟。即,如圖18所示之製造裝置70B般,可不具備搬送方向變更部TB3,亦可不具備膜搬送部72。於該情形時,只要藉由膜搬送部73,以使積層表面保護膜60之寬度方向實質上與假想平面P3之法線方向一致之方式搬送積層表面保護膜60即可。例如,於準備積層表面保護膜60作為原片輥之情形時,自原片輥送出之積層表面保護膜60由膜搬送部73搬送。於變化例2-2中,亦對剝離膜61之搬送方向進行變更,因此,可使將製造裝置70B設置於工廠時之佈局之自由度提高。
In the manufacturing method of the polarizing plate demonstrated using FIG. 15 and FIG. 16, there is a process of changing the conveyance direction of the laminated surface
於至此為止之第2實施形態及其變化例之說明中,例示了用以保護偏光板表面之表面保護膜作為保護膜。然而,例如,保護膜於在偏光板之單面形成將附表面保護膜之偏光板貼合於液晶單元時的黏著劑層之形態中,亦可為如下保護膜(所謂之無載體膜),該保護膜(所謂之無載體膜)用以防止污物等附著於黏著劑層,直至將附表面保護膜之偏光板貼合於液晶單元為止。此例如對應於表面保護膜52能夠剝離地與黏著劑層53貼合之形態。
In the description of the second embodiment and its modified examples so far, the surface protection film for protecting the surface of the polarizing plate has been exemplified as the protection film. However, for example, the protective film may also be the following protective film (so-called carrierless film) in the form of an adhesive layer formed on one side of a polarizing plate to attach a polarizing plate with a surface protective film to a liquid crystal cell. The protective film (the so-called carrierless film) is used to prevent dirt and the like from adhering to the adhesive layer until the polarizing plate with the surface protective film is attached to the liquid crystal cell. This corresponds to, for example, a form in which the
又,於第2實施形態及其變化例之說明中,光學膜並不限定於偏光板。例如,光學膜亦可為相位差膜。於該情形時,貼合光學膜為相位差板。 In addition, in the description of the second embodiment and its modification examples, the optical film is not limited to a polarizing plate. For example, the optical film may be a retardation film. In this case, the bonded optical film is a phase difference plate.
以上,對本發明之各種實施形態及變化例進行了說明,但本發明並不限定於所例示之各種實施形態及變化例,本發明由申請專利範圍表示,且意圖包含與申請專利範圍均等之含義及範圍內之全部變更。 The various embodiments and modifications of the present invention have been described above, but the present invention is not limited to the various embodiments and modifications illustrated. The present invention is represented by the scope of the patent application and is intended to include the meaning equivalent to the scope of the patent application And all changes within the scope.
10‧‧‧偏光板(貼合光學膜) 10‧‧‧Polarizing plate (bonding optical film)
11‧‧‧偏光膜(光學膜) 11‧‧‧Polarizing film (optical film)
12‧‧‧保護膜(第2保護膜) 12‧‧‧Protective film (Second protective film)
13‧‧‧保護膜 13‧‧‧Protective film
20‧‧‧積層保護膜(能夠剝離地貼合有剝離膜之保護膜) 20‧‧‧Laminated protective film (protective film with peeling film attached to it in a peelable manner)
21‧‧‧剝離膜 21‧‧‧Peeling film
30‧‧‧製造裝置(貼合光學膜之製造裝置) 30‧‧‧Manufacturing device (manufacturing device for laminating optical film)
31‧‧‧膜搬送部(光學膜搬送部) 31‧‧‧Film transport department (optical film transport department)
31a‧‧‧輥 31a‧‧‧roller
32‧‧‧膜搬送部 32‧‧‧Film Transport Department
32a‧‧‧輥 32a‧‧‧roller
34‧‧‧膜搬送部(第1剝離膜搬送部) 34‧‧‧Film transport section (1st release film transport section)
34a‧‧‧輥 34a‧‧‧roller
35‧‧‧膜搬送部(貼合光學膜搬送部) 35‧‧‧Film transport section (Laminated optical film transport section)
35a‧‧‧輥 35a‧‧‧roller
36‧‧‧膜搬送部(剝離膜搬送部、第2剝離膜搬送部) 36‧‧‧Film transport section (release film transport section, second release film transport section)
36a‧‧‧輥 36a‧‧‧roller
37‧‧‧貼合部 37‧‧‧Lamination Department
37a‧‧‧輥 37a‧‧‧roller
37b‧‧‧輥 37b‧‧‧roller
38‧‧‧剝離部 38‧‧‧Striping Department
40‧‧‧積層體 40‧‧‧Layered body
P1‧‧‧假想平面(第1假想平面) P1‧‧‧Imaginary plane (1st imaginary plane)
TB1‧‧‧搬送方向變更部(保護膜搬送方向變更部) TB1‧‧‧Transfer direction change section (protective film transport direction change section)
TB2‧‧‧搬送方向變更部(剝離膜搬送方向變更部) TB2‧‧‧Transfer direction change section (Release film transport direction change section)
Claims (27)
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