CN107015303A - The manufacture method of laminated optical film and the manufacture device of laminated optical film - Google Patents
The manufacture method of laminated optical film and the manufacture device of laminated optical film Download PDFInfo
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- CN107015303A CN107015303A CN201610818658.2A CN201610818658A CN107015303A CN 107015303 A CN107015303 A CN 107015303A CN 201610818658 A CN201610818658 A CN 201610818658A CN 107015303 A CN107015303 A CN 107015303A
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- China
- Prior art keywords
- optical film
- layered product
- active energy
- energy beam
- curable resin
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- 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
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/26—Layered products comprising a layer of synthetic resin characterised by the use of special additives using curing agents
-
- 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
- B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
- B32B37/003—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality to avoid air inclusion
-
- 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
-
- 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
- G02F1/133528—Polarisers
Abstract
The present invention is the manufacture method of laminated optical film (12), and it possesses following process：By curable resin, the 2nd optical film (2) is overlapped on one side or the two sides of the 1st optical film (4), obtain the lamination process of layered product (6)；The 1st curing process for solidifying curable resin；And after the 1st curing process, the 2nd curing process for further solidifying curable resin.After the 1st curing process and before the 2nd curing process, layered product is not transported by contact-type conveyer.
Description
Technical field
The present invention relates to the manufacture method of laminated optical film and the manufacture device of laminated optical film.
Background technology
In the past, as one of optical component for constituting liquid crystal display device etc., it is known that one side or two sides in the polarizer
On be laminated the Polarizer of diaphragm.
It is used as the manufacture method of Polarizer, it is known that layer is carried out by adhesive while the polarizer is transported with diaphragm
It is folded, solidify the method for adhesive by irradiating active energy beam (for example, Japanese Patent Laid-Open 2009-134190 public affairs
Report).
The content of the invention
In conventional manufacture method, due to the foreign matter being attached in transport roller, exist and beaten on the surface of Polarizer
The situation of trace defect.Beat trace defect due to the cycle corresponding to the transport roller for being attached with foreign matter continuously to occur, thus cause partially
The product yield of tabula rasa is greatly reduced.The problem points are and also same in the manufacture of all laminated optical films not only in Polarizer
Sample is present.
Therefore, it is an object of the invention to provide the manufacture method of the laminated optical film for the generation that can suppress to beat trace defect
And the manufacture device of laminated optical film.
The present invention provides the manufacture method of laminated optical film, and the manufacture method has following process：By curable resin,
Make the 2nd optical film overlapped in the one or two sides of the 1st optical film, and obtain the lamination process of layered product；Make curable resin
1st curing process of solidification；After the 1st curing process, the 2nd curing process for further solidifying curable resin；And
After the 1st curing process and before the 2nd curing process, layered product is not transported by contact-type conveyer.
In the manufacture method, by implementing the 1st curing process, curability tree to the layered product obtained in lamination process
Fat starts solidification, and then by implementing the 2nd curing process, curable resin further solidifies.Herein, it is firm in the 1st curing process
After just terminating, the solidification of curable resin is in insufficient state, it may be said that the contact-type contacted after being attached to
The state that trace defect is easiest to produce on layered product is beaten caused by foreign matter on conveyer.In the past, due in the 1st solidification
Layered product contacted, transport or is turned with contact-type conveyer after process, thus generate dozen trace defect.With this phase
It is right, the present invention manufacture method in, after the 1st curing process, before the 2nd curing process, i.e., be easiest to generation beat trace
In the stage of defect, layered product is not transported by contact-type conveyer.Therefore, according to the present invention it is possible to suppress to beat trace defect
Generation.
In the manufacture method of the present invention, after the 1st curing process and before the 2nd curing process, it is possible to have
Carriage direction converting process, the carriage direction converting process is the transport by non-contact type conveyer, conversion layered product
The process in direction.In the case where that can change the carriage direction of layered product, the free degree of the design of delivery line is high, easily enters
The space-efficient design of row section.Further, since non-contact type conveyer is used in the conversion of carriage direction, thus it is solid the 1st
After chemical industry sequence and before the 2nd curing process, the state for making layered product not contacted with contact-type conveyer can be maintained.
Herein, the 1st curing process and at least one party in the 2nd curing process or active energy beam irradiation work
Sequence, the active energy beam irradiation process is the work irradiated active energy beam on layered product and solidify curable resin
Sequence.Irradiate active energy beam on layered product moreover, the 1st curing process and the 2nd curing process may each be and make curability
The active energy beam irradiation process of resin solidification.
In the case of curable resin solidification is used active energy beam, active energy beam can be ultraviolet
Line.
In addition, for make curable resin solidification use active energy beam in the case of, the 1st curing process can also
It is that while layered product is adjacent in the outer peripheral face of the roller of rotation, active energy beam is irradiated on layered product, and makes solid
The active energy beam irradiation process of the property changed resin solidification.
The manufacture method of the present invention can also be, after the 2nd curing process, with further solidifying curable resin
At least one add curing process, and after the 2nd curing process and before whole addition curing process, not by connecing
The type of touching conveyer transports the mode of layered product.In order that the solidification of curable resin is relatively reliable and implements further solid
In the case of chemical industry sequence, in order to more reliably suppress the generation for beating trace defect, untill terminating last irradiation, layered product is not allowed
Contact and be advisable with contact-type conveyer.
In addition, in the case of with above-mentioned additional curing process, after the 2nd curing process and in additional curing process
Before, it is possible to have carriage direction converting process, the carriage direction converting process is turned by non-contact type conveyer
The process for changing the carriage direction of layered product.
In the manufacture method of the present invention, the 1st optical film can be the polarizer, and the 2nd optical film can be diaphragm.From
In the case that these films manufacture Polarizer as laminated optical film, the particularly suitable effect for obtaining the present invention.
The present invention provides a kind of manufacture device of laminated optical film, it is characterised in that the manufacture device possesses following device：
By curable resin, make the 2nd optical film overlapped in the one or two sides of the 1st optical film, the stacked laminator of acquisition layered product；
The 1st solidification equipment for solidifying curable resin；And the curable resin of the layered product provided by the 1st solidification equipment is entered one
Walk the 2nd solidification equipment of solidification；And the manufacture device does not possess contact-type between the 1st solidification equipment and the 2nd solidification equipment
Conveyer.
In the manufacture device, by being applicable the 1st solidification equipment, curable resin to the layered product obtained by stacked laminator
Start solidification, then by being applicable the 2nd solidification equipment, curable resin further solidifies.Herein, just it is being applicable the 1st solidification
After device, curable resin is in the state of semi-solid preparation, it may be said that the contact-type conveyer contacted after being attached to
On foreign matter caused by beat the state that trace defect is easiest to produce on layered product.In the past, due in applicable 1st solidification equipment
Layered product contacted, transport or is turned with contact-type conveyer afterwards, thus generate dozen trace defect.On the other hand,
The present invention manufacture device in, between the 1st solidification equipment and the 2nd solidification equipment, i.e., be easiest to generation beat trace defect
Under place, do not possess contact-type conveyer.Therefore, according to the present invention it is possible to suppress to play the generation of trace defect.
The manufacture device of the present invention can possess conversion stacking between the 1st solidification equipment and the 2nd solidification equipment, further
The non-contact type conveyer of the carriage direction of body.
Herein, the 1st solidification equipment and at least one party in the 2nd solidification equipment or active energy beam irradiation dress
Put, the active energy beam irradiation unit is the dress for irradiating active energy beam to layered product and solidifying curable resin
Put.Irradiate active energy beam moreover, the 1st solidification equipment and the 2nd solidification equipment may each be to layered product and make curability tree
The active energy beam irradiation unit of fat solidification.
The manufacture device of the present invention can also possess layered product and be adjacent to the roller rotated while outer peripheral face, its
In, the 1st solidification equipment is, to the layered product being adjacent on the outer peripheral face of the roller of rotation, to irradiate active energy beam, and is made solid
The device of the property changed resin solidification.
In addition, the manufacture device of the present invention can also be following device：Possess at least one and add solidification equipment, it is described to chase after
Plus solidification equipment is the device for further solidifying the curable resin of the layered product provided by the 2nd solidification equipment；In the 2nd solidification
Between device and the addition solidification equipment of whole, do not possess contact-type conveyer.
Herein, the 1st optical film can be the polarizer, and the 2nd optical film can be diaphragm.
According to the present invention it is possible to provide the manufacture method and layer of the laminated optical film for the generation that can suppress to beat trace defect
The manufacture device of folded optical film.
Brief description of the drawings
Fig. 1 is the overview side view of the manufacture device for the Polarizer for showing the 1st embodiment of the present invention.
Fig. 2 is the overview side of the manufacture device of the Polarizer for another embodiment for showing the 1st embodiment of the present invention
View.
Fig. 3 is the overview side view of the manufacture device for the Polarizer for showing the 2nd embodiment of the present invention.
Fig. 4 is the overview side view of the manufacture device for the Polarizer for showing other embodiments of the present invention.
Symbol description
1、1A、100、200：The manufacture device (manufacture device of laminated optical film) of Polarizer；2(2A、2B)：Diaphragm
(the 2nd optical film)；4：The polarizer (the 1st optical film)；5：Doubling roller (stacked laminator)；6：Layered product；7：Roller；8：1st activity
Energy-ray irradiation unit (the 1st solidification equipment, the 1st active energy beam irradiation unit)；9：Non-contact type conveyer；10：
2nd active energy beam irradiation unit (the 2nd solidification equipment, the 2nd active energy beam irradiation unit)；12：Polarizer (stacking light
Learn film)；108：1st drying oven (the 1st solidification equipment)；110：2nd drying oven (the 2nd solidification equipment).
Embodiment
Hereinafter, the suitable embodiment to the present invention is described in detail.
The embodiment ＞ of ＜ the 1st
As the 1st embodiment of the present invention, display is using as the polarizer of the 1st optical film and being used as the 2nd optical film
Diaphragm laminating, the example of manufacture Polarizer (laminated optical film).In the manufacture device and manufacture method, pass through active-energy
Ray-curable resin, overlaps diaphragm and is configured on the one side of the membranaceous polarizer or two sides, and constitutes layered product,
On this, point multiple stages irradiate active energy beam, make active energy ray-curable resin solidification.Manufactured at this
Cheng Zhong, layered product is transported by transport roller.
(polarizer)
As the polarizer, the known material used in the past in manufacture Polarizer can be used.It can typically include：
On polyvinyl alcohol film through uniaxial tension, dyed with iodine or dichroic dye, then carry out film formed by boric acid processing.
The thickness of the polarizer is preferably 0.1~50 μm, more preferably 1~30 μm.
(diaphragm)
Diaphragm is the film of the rupture or the damage that prevent the polarizer.As material, for example, it can include following films.
A groups：Amorphous polyolefins resin film can be included, it is polyester based resin film, (methyl) acrylic resin film, poly-
The low resin films of moisture permeability such as carbonic ester resin film, polysulfones resin film, ester ring type polyimides system resins film.Amorphism is gathered
In olefin-based resin film, for example, it can include：" ト パ ス (TOPAS) ", the JSR (strains of German Ticona (Ticona) company manufacture
Formula) commercial firm's manufacture " ア ー ト Application (ARTON) ", Japanese auspicious father-in-law (Zeon) (strain formula) commercial firm manufacture " ゼ オ ノ ア (ZEONOR) "
Or " ゼ オ ネ ッ Network (ZEONEX) ", " the ア ペ Le (APL) " of the manufacture of Mitsui Chemicals (strain formula) commercial firm etc..
B groups：In addition to material cited in A groups, tri acetyl cellulose film, diacetyl cellulose can be included
The cellulose acetate resin film such as film.In tri acetyl cellulose film, for example, it can include Fujiphoto (strain formula) commercial firm's system
" Off ジ タ ッ Network (FUJITAC) TD80 ", " Off ジ タ ッ Network TD80UF " and " Off ジ タ ッ Network TD80UZ ", the Konica made
(Konica) " KC8UX2M " and " KC8UY " of Co., Ltd.'s manufacture etc..
The species for the diaphragm being laminated on the two sides of the polarizer is same to each other or different to each other.The situation of the different film of stacking
Under, each selection is a kind of preferably from above-mentioned A groups and B groups.
For diaphragm, before the polarizer is fitted in, saponification process, sided corona treatment, bottom can be implemented on binding face
The easily adhesion process such as paint processing, grappling coating process.In addition, the surface of the opposite side in the face fitted with the polarizer of diaphragm
On, it is possible to have the various process layers such as hard conating, anti-reflection layer, antiglare layer.
Both can be not have the pure diaphragm or phase retardation film of optical function or change as diaphragm
Have the diaphragm of optical function as kind brightness film concurrently.
The thickness of diaphragm is preferably 5~200 μm, more preferably 5~120 μm, more preferably 5~85 μm.
(active energy ray-curable resin)
The polarizer can be fitted with diaphragm by active energy ray-curable resin.It is used as active energy ray-curable
Property resin, can use bonding agent or adhesive.
Bonding agent refers to, will be not intended to after bonding between two films (being herein the polarizer and diaphragm) of stripping
Fixed material.As bonding agent, the various bonding agents used in the past in the manufacture of Polarizer can be used.With regard to weatherability or
For the viewpoints such as refractive index, cationically polymerizable, the epoxy resin of aromatic rings is preferably free of in intramolecular.
As epoxy resin, such as preferred hydrogenated epoxy resin, alicyclic epoxy resin, aliphatic epoxy resin.Can
To add polymerization initiator into epoxy resin (for example, drawing for the light cationic polymerization that polymerization is allowed under being irradiated in ultraviolet
Hair agent, hot cationic polymerization or another additive (sensitizer for being allowed to polymerization by heat ray irradiation
Deng), the composition epoxy resin of coating is prepared to use.
In addition, as bonding agent, acrylamide, acrylate, urethane acrylate, epoxy acrylic can also be used
The acrylic resins such as ester.
Thickness before the solidification of bond layer after the polarizer is fitted with diaphragm using doubling roller described later, preferably
0.01~5 μm.
Adhesive refers to, fixed material between two films peeling off will be also intended to after bonding.As adhesive,
Preferably generally：By polymer based on acrylic resin, phenylethylene resin series, silicone-based resin etc., and add wherein
The composition of the crosslinking agents such as isocyanate compound, epoxide, aziridine cpd is added.It is further possible to set
It is set to the adhesive containing particulate, display scattering.
In the range of the characteristic of processability and durability is not damaged, adhesive is preferably formed as relatively thin, by the polarizer with
Thickness after diaphragm laminating is preferably 1~40 μm, more preferably 3~25 μm.If the thickness of adhesive is 3~25 μm, especially
From with good processability and suppress the polarizer change in size in terms of for be suitable.
As the method for laminating adhesive on the polarizer or on diaphragm, for example, can be in the polarizer or protection
On film, coating includes the method for the solution of each composition headed by above-mentioned base polymer or used on barrier film and is somebody's turn to do
After solution formation adhesive phase, the method that stacking is transferred on the polarizer or diaphragm.
Bonding agent and adhesive are all solidified by active energy beam (ultraviolet or heat ray).
(Polarizer)
Polarizer is with the material fitted on the one side of unit (image-displaying member) or two sides in displays such as liquid crystal cells.
Polarizer may further include the other optical layers being laminated on diaphragm.As other optical layers, it can include：Through
Certain polarisation, reflective display goes out the reflection type polarizing film of the polarisation of opposite to that property；There is concaveconvex shape on the surface
Add the film of anti-dazzle function；It is additional to prevent the film of surface reflection function；There is the reflectance coating of reflection function on the surface；Have concurrently anti-
Penetrate function and the semipermeable reflection film through function；Compensate the film at visual angle etc..
The thickness of Polarizer is preferably 20~500 μm, more preferably 20~200 μm.
(manufacture device)
Hereinafter, referring to the drawings while, the manufacture device and manufacture method of Polarizer are illustrated.Herein, in the polarizer
Two sides stacked guard film and active energy ray-curable resin illustrate for the situation of bonding agent.In addition, in each figure, in phase
With additional identical symbol in part or considerable part, the repetitive description thereof will be omitted.
The manufacture device 1 of Polarizer shown in Fig. 1, is disposed with along the carriage direction of layered product 6：For in protection
The bonding agent apparatus for coating 3 (3A, 3B) of coating adhesive on the one side of film 2 (2A, 2B), for make the polarizer 4 and diaphragm 2A,
Doubling roller (stacked laminator) 5 that 2B overlaps each other, the layered product 6 for making to be fitted with the polarizer 4 and diaphragm 2A, 2B are adjacent to
Roller 7, the 1st active energy beam irradiation unit being arranged on the position relative with the outer peripheral face of roller 7 (the 1st solidification equipment,
1st active energy beam irradiation unit) 8, the non-contact type conveyer 9 of carriage direction for changing layered product 6, also have and set
Put the 2nd active energy beam irradiation unit (the 2nd solidification equipment, the 2nd active energy ray irradiation dress in carriage direction downstream
Put) 10, with transporting roll (nip roll) 11.
As the manufacture method of the Polarizer using the manufacture device 1, first to from being wound as the state of roll continuously
Diaphragm 2A, 2B of releasing, with bonding agent apparatus for coating 3A, 3B on one side coating adhesive (bonding agent painting process).So
Afterwards, by doubling roller 5, by bonding agent, respectively overlap diaphragm 2A, 2B and continuously extracted out from the state for being wound as roll
The polarizer 4 two sides on, formed layered product 6 (bonding process).It is lamination process above.
Then, transported, now, lived from the 1st while layered product 6 is adjacent on the outer peripheral face of the roller 7 of rotation
Performance amount beam exposure apparatus 8, active energy beam is irradiated to the layered product 6 being adjacent on the outer peripheral face of roller 7, starts bonding
Solidification (the 1st curing process of agent.Hereinafter, due to irradiation active energy beam, also referred to as " the 1st active energy beam irradiates work
Sequence ".).
Then, by non-contact type conveyer 9, the layered product 6 that the solidification of bonding agent starts is changed into carriage direction (fortune
Send direction converting process).Then, from the 2nd active energy beam irradiation unit 10, active energy beam is irradiated to layered product 6, is entered
One step makes bonding agent solidify (the 2nd curing process.Hereinafter, due to irradiation active energy beam, also referred to as " the 2nd active energy beam
Irradiation process ".).Finally, layered product 6 is taken up as Polarizer 12 by transporting roll 11 on takers-in 13.
By above process, Polarizer 12 can be manufactured.Hereinafter, each operation is described in detail.
In above-mentioned manufacture method, to the method for diaphragm 2A, 2B coating adhesive, there is no particular limitation, for example can be with
Utilize the various coating methods such as scraper, bar, die type coating machine, comma coating machine, gravure coater.Wherein, it is contemplated that
To film coated, the free degree, the adaptation of width of trace (path line) etc., preferably gravure roll is used as bonding agent apparatus for coating
3A、3B。
The outer peripheral face of roller 7 is formed to pass the convex surface of mirror finish, layered product 6 is carried out while being adjacent to its surface
Transport, in this process, by the 1st active energy beam irradiation unit 8, solidify bonding agent.From make bonding agent solidification, make layer
From the aspect of stack 6 is fully adjacent to, there is no particular limitation for the diameter of roller 7, it is preferred that adhesive layer is uncured shape
The layered product 6 of state is during by roller 7, with the bias integrating meter of ultraviolet, irradiates 30mJ/cm2Active-energy above is penetrated
Line.Roller 7 is set as carrying out rotation driving corresponding to the rotary speed of linear velocity.
In order to when solidifying bonding agent by irradiating active energy beam, make the heat on layered product 6 be difficult to increase, also may be used
It regard roller 7 as chill roll.In this case, the surface temperature of chill roll is preferably 20~25 DEG C.
There is no particular limitation for the light source of active energy beam in the 1st active energy beam irradiation process, can make
There is the ultraviolet of luminous distribution used in below wavelength 400nm, for example Cooper-Hewitt lamp, middle medium pressure mercury lamp, high-pressure mercury-vapor lamp, super
High-pressure mercury-vapor lamp, chemical lamp, black light lamp, microwave-excitation mercury vapor lamp, metal halide lamp etc..On to composition epoxy resin
Photo-irradiation intensity, for the viewpoint of reaction time or heating, contained polymerization triggers in preferred pair composition epoxy resin
The exposure intensity of the effective wave-length coverage of activation of agent is 0.1~100mW/cm2。
The irradiation of active energy beam in the 1st active energy beam irradiation process, for the mesh of increase integrating light quantity
, preferably repeatedly carry out.The manufacture device 1 of present embodiment has two the 1st active energy beam irradiation units 8, carries out 2 times
The irradiation of active energy beam.
In the 1st active energy beam irradiation process, it may refrain from the wavy uneven viewpoint in Polarizer 12 and suppress
For the viewpoint of cure shrinkage in 2nd active energy beam irradiation process, to pass through the ultraviolet (UVB) during roller 7
Integrating light quantity is preferably 10~185mJ/cm2, more preferably 60~175mJ/cm2Ground, irradiates active energy beam.
There is no particular limitation for the linear velocity of layered product 6,75~1150N/m preferably on length direction (carriage direction)
Under tension force, at least exposure intensity is 30mW/cm in addition2Above, irradiation time is that under conditions of more than 0.3 second, layered product 6 is shone
Penetrate active energy beam.
Non-contact type conveyer 9 in carriage direction converting process, can not contact with layered product 6 and change layered product
6 carriage direction, identically with common transport roller, the width more than width with layered product 6.Non-contact type conveyer
Carriage direction of 9 surface along layered product 6 bends to curved, and its surface opening has multiple holes.Moreover, with logical from inside
Cross the structure of the hole and blow out air
Layered product 6 is by the air blown out out of non-contact type conveyer 9, from the surface of non-contact type conveyer 9
Float, can prevent from contacting with non-contact type conveyer 9, while its carriage direction can be to constitute the angle of acute angle or even obtuse angle
Degree is changed.As the non-contact type conveyer 9 with this structure, for example, it can include BELLMATIC (strain formula) meeting
" Airturnbar " of society's manufacture.The angle turned can determine suitably according to the situation of the design of delivery line,
Usually 10 °~180 °.Although in addition, a non-contact type conveyer 9 has only been drawn in Fig. 1, according to delivery line
The situation of design, can also set multiple non-contact type conveyers 9.
In manufacture device 1, the 1st active energy beam irradiation unit 8 and the 2nd active energy beam irradiation unit 10 it
Between transport interval on, in the absence of the contact-type conveyer such as roller contacted with layered product 6.Herein, contact-type conveyer
Refer to, when transporting, the device of power for transport is contacted, transmitted with layered product 6, or only have and support layer in transit
The device of the effect of stack 6.Usually as transmission for the device of the power transported, there are guide roller or roll (niproll)
Deng, as only have support layered product 6 effect device, have guide rod or free roll etc..
2nd active energy beam irradiation process, is to compensate for the work brought by the 1st active energy beam irradiation unit 8
The integrating light quantity of property energy-ray and set.2nd active energy is set in the carriage direction downstream of non-contact type conveyer 9
Beam exposure apparatus 10 is measured, is penetrated to the boost active-energy of layered product 6 supplied by the 1st active energy beam irradiation process
Line, further carries out the solidification of bonding agent.The manufacture device 1 of present embodiment has three the 2nd active energy beam irradiation dresses
10 are put, the irradiation of 3 active energy beams is carried out.
The light source of 2nd active energy beam irradiation unit 10, light that both can be with the 1st active energy beam irradiation unit 8
Source is identical, can also be different from.
Photo-irradiation intensity in 2nd active energy beam irradiation process, is set as adding with the 1st active energy ray irradiation process
The integrating light quantity of ultraviolet (UVB) in all process steps got up is 10mJ/cm2More than, particularly preferably 60~5000mJ/
cm2。
The ratio that bonding agent solidifies after whole active energy beam irradiation process, i.e. reactivity be preferably 90% with
On, more preferably more than 95%.
(action effect)
In the manufacture method using the Polarizer of above-mentioned manufacture device 1, pass through the stacking to being obtained in lamination process
Body 6, irradiates the 1st active energy beam in the 1st active energy beam irradiation process, and bonding agent is started solidification, Ran Houtong
The 2nd active energy beam of irradiation in the 2nd active energy beam irradiation process is crossed, bonding agent further solidifies.
Herein, after the 1st active energy beam irradiation process just terminates, the solidification of bonding agent is in insufficient shape
State, it may be said that the trace defect of beating caused by the foreign matter being attached on the contact-type conveyer then contacted is easiest in stacking
The state produced on body 6.In the past, after the 1st active energy beam irradiation process, due to contacting layered product 6 and roller etc.
Type conveyer contacts and is transported or it is turned, and produces and beat trace defect.On the other hand, manufacture is being used
In the manufacture method of device 1, after the 1st active energy beam irradiation process, the 2nd active energy beam irradiation process it
Before, i.e., beat trace defect be easiest to produce stage in, do not pass through contact-type conveyer transport layered product 6.Therefore, according to this
Embodiment, can suppress to play the generation of trace defect.
In addition, in the manufacture method, after the 1st active energy beam irradiation process and in the 2nd active energy beam
Before irradiation process, due to turning with the carriage direction that the carriage direction of layered product 6 is changed by non-contact type conveyer 9
Process is changed, so the carriage direction of layered product 6 can be changed.Accordingly, the free degree of the design of shipping line is improved, and is easily saved
Design space-efficient.Further, since non-contact type conveyer 9 is used in the conversion of carriage direction, so in the 1st active energy
After amount radiation exposure process and before the 2nd active energy beam irradiation process, layered product 6 can be maintained not transported with contact-type
The state for sending device to contact.
More than, although the suitable embodiment to the present invention is illustrated, but the present invention is not limited to above-mentioned reality completely
Apply form.For example, in above-mentioned embodiment, although be used as manufacture device 1, it is shown that equipped with non-contact type conveyer 9
Embodiment, but as shown in Fig. 2 the implementation for not possessing non-contact type conveyer 9 is also may be set to as manufacture device 1A
Mode.In this case, in the area from the 1st active energy beam irradiation process untill the 2nd active energy beam irradiation process
Between in, layered product 6 is transported with not changing direction.
In addition, in above-mentioned embodiment, although as Fig. 1, the cross sectional shape of non-contact type conveyer 9 is set as
Circle, but cross sectional shape is not necessarily required to closure, non-contact type conveyer 9 can also be to provide the tabular of curved surface.In addition, non-
Contact-type conveyer 9 is not necessarily required to possess curved surface, or plane.In this case, layered product 6 can be not accompanied by turning
Change direction and transported.
In addition, in above-mentioned embodiment, although show the example that active energy beam is ultraviolet, but active-energy
Ray can also be heat ray.In this case, hot cationic polymerization can be used as polymerization initiator, using red
Outside line etc. is as heat ray, as that should give the energy of layered product 6, identical with the situation of above-mentioned ultraviolet.
In addition, in above-mentioned embodiment, it is shown that three layers of laminating of diaphragm 2 of being fitted on the two sides of the polarizer 4
Embodiment of the embodiment but it is also possible to be two layers of laminating of diaphragm 2 of being fitted only on the one side of the polarizer 4.
In addition, though in above-mentioned embodiment, it is shown that with the 1st active energy beam irradiation process (the 1st active energy
Measure beam exposure apparatus 8) with the embodiment party of the 2nd active energy beam irradiation process (the 2nd active energy beam irradiation unit 10)
Formula, but can also be in the carriage direction downstream of the 2nd active energy beam irradiation process, further with the such as the 3rd active energy
Measure radiation exposure process (the 3rd active energy beam irradiation unit) or the 4th active energy beam irradiation process (the 4th active-energy
Beam exposure apparatus) as boost process (boost device).In this case, shone in the 2nd active energy beam
Penetrate after process and before whole boost processes, preferably layered product 6 is not transported by contact-type conveyer.
The embodiment ＞ of ＜ the 2nd
Hereinafter, the 2nd embodiment to the present invention is illustrated.It is different from the 1st embodiment as the 2nd embodiment
Point, including：Active energy ray-curable resin is replaced as curable resin using water system curable resin, and solid
In chemical industry sequence, it is run through drying oven to replace irradiating active energy beam to layered product.
As the 2nd embodiment, show and paste the polarizer as the 1st optical film with the diaphragm as the 2nd optical film
Close, manufacture the example of Polarizer (laminated optical film).In the manufacture device and manufacture method, the membranaceous polarizer is being configured to
One side or two sides on, make diaphragm overlapping by water system curable resin and constitute layered product, by it in drying oven point
Multiple stages are dried, and solidify water system curable resin.In the manufacturing process, layered product is transported by transport roller
Send.
Hereinafter, a pair point different from the 1st embodiment is illustrated.
(water system curable resin)
Water system curable resin is water system bonding agent, i.e. bonding agent composition is dissolved in the water or is dispersed in water and
Obtained bonding agent.As water system curable resin, the resin by heat cure is used.
As water system curable resin, as principal component such as can use polyvinyl alcohol resin, polyurethane resin,
In order to improve cementability, the composition for being mixed with isocyanates based compound, epoxide etc. can be used.
Use polyvinyl alcohol resin as water system curable resin main composition when, except partly-hydrolysed polyvinyl alcohol
Or outside fully saponified polyvinyl alcohol, carboxy-modified polyvinyl alcohol, acetoacetyl modified polyvinyl alcohol, hydroxyl can also be used
The modified polyvinyl alcohol resins such as methyl modified polyvinylalcohol, amino modified polyvinyl alcohol.Using such polyethylene
In the case of alcohol system resin, the aqueous solution using polyvinyl alcohol resin is used as water system curable resin.Relative to 100 parts by weight
Water, the concentration of polyvinyl alcohol resin is usually 1~10 parts by weight in water system curable resin, preferably 1~5 parts by weight.
The thickness of dried bond layer is usually 0.001~5 μm or so, preferably more than 0.01 μm, it is additionally preferred to
For less than 2 μm, more preferably less than 1 μm.If the thickness of bond layer is excessive, the outward appearance of Polarizer easily becomes bad.
Water system curable resin can contain thermal curing agents.
(manufacture device)
The manufacture device 100 of Polarizer involved by 2nd embodiment, as illustrated in fig. 3, instead of the 1st embodiment institute
Roller 7, the 1st active energy beam irradiation unit 8, the irradiation of the 2nd active energy beam in the manufacture device 1 for the Polarizer being related to
Device 10, possesses the drying oven (the 2nd solidification equipment) 110 of the 1st drying oven (the 1st solidification equipment) the 108 and the 2nd.
The polarizer 4 and diaphragm 2A, 2B by water system curable resin (bonding agent) overlap formed by layered product 6,
The 1st drying oven 108 (the 1st curing process) is imported into while transport.From layered product 6 derived from the 1st drying oven 108, then by
Import the 2nd drying oven 110 (the 2nd curing process).From layered product 6 derived from the 2nd drying oven 110, eventually as the quilt of Polarizer 12
Takers-in 13 is wound.
Do not limited particularly as the drying mode of the 1st drying oven 108, for example, can include hot air type drying oven, red
Outer wire type drying oven, hot air type and infrared-type and drying oven etc..
The total length of the transport path of layered product 6 in 1st drying oven 108 is 10~60m, preferably 20~50m.1st dries
Drying temperature in stove 108, for removing the moisture of water system curable resin and being difficult to produce the viewpoint of curling, generally
For 30 DEG C~100 DEG C, more preferably 60 DEG C~100 DEG C.
Drying time, i.e., it is imported into from layered product 6 in the 1st drying oven 108 to layered product 6 by the 1st drying oven 108
Time untill being exported, usually 50~1200 seconds, more preferably preferably 60~1000 seconds, 100~600 seconds.Such as dried fruit
The dry time is too short, dries deficiency, the polarizer 4 tends to be easily peeled off with diaphragm 2A, 2B, if drying time is more than 1200
Second, it is not preferred for the viewpoint of productivity ratio.It is appropriate that the drying temperature can be carried out according to species of water system curable resin etc.
Ground is adjusted.
In 1st drying oven 108, in order to control the transport path of layered product 6, guide roller can also be set.In addition, along layer
The transport path of stack 6, can also set pinch roll (pinch roll).These guide rollers and pinch roll are entirely driven
Roller, the layered product 6 that can be transported according to the driving of the takers-in (not shown) by batching layered product 6 it is mobile and driven.
On the other hand, in the 1st drying oven 108, guide roller and pinch roll can be also not provided with.In this case, can prevent
Produced due to beating trace defect caused by these rollers on layered product 6.In addition, in this case, due under the influence of gravity
It is difficult to transport layered product 6 in the horizontal direction, so as illustrated in fig. 3, preferred vertical transports downwards layered product 6.
In manufacture device 100, on transport between the 1st drying oven 108 and the 2nd drying oven 110 interval, in the absence of with layer
The contact-type conveyers such as the roller that stack 6 is contacted.
Those phases with the 1st drying oven 108 such as drying mode, total length, drying temperature, drying time of the 2nd drying oven 110
Together.
(action effect)
In the manufacture method using the Polarizer of above-mentioned manufacture device 100, it is laminated by being dried in the 1st curing process
Body 6, makes bonding agent start solidification, layered product 6 is then further dried in the 2nd curing process, bonding agent further solidifies.
Herein, after the 1st curing process just terminates, the solidification of bonding agent is in insufficient state, it may be said that be attached
The shape that trace defect is easiest to produce on layered product 6 of beating caused by the foreign matter on the contact-type conveyer then contacted
State.In the past, transported or changed due to contacting the contact-type conveyers such as layered product 6 and roller after the 1st curing process
Direction, thus generate dozen trace defect.On the other hand, in the manufacture method using manufacture device 100, work is solidified the 1st
After sequence, before the 2nd curing process, i.e., be easiest to produce beat in the stage of trace defect, do not pass through contact-type conveyer
Transport layered product 6.Therefore, according to present embodiment, it can suppress to play the generation of trace defect.
For above-mentioned 2nd embodiment, the change same with the 1st embodiment can be carried out.For example, in above-mentioned implementation shape
In state, although show the embodiment of three layers of laminating for diaphragm 2 of being fitted on the two sides of the polarizer 4 but it is also possible to be only
The embodiment of two layers of laminating of laminating diaphragm 2 on the one side of the polarizer 4.
In addition, in above-mentioned 2nd embodiment, although show with the 1st curing process (the 1st drying oven 108) and the 2nd
The embodiment of curing process (the 2nd drying oven 110), but in the carriage direction downstream of the 2nd curing process, one can also be entered
There is step the additional curing process as the 3rd curing process (the 3rd drying oven) or the 4th curing process (the 4th drying oven) (to chase after
Plus solidification equipment).In this case, after the 2nd curing process and before whole addition curing process, preferred layered product
6 are not transported by contact-type conveyer.
Although listing the form that is preferable to carry out of the present invention above, the embodiment of the present invention is not limited to above-mentioned implementation
Form.
For example, it is also possible to which manufacture device 200 is like that, active using the 1st in the 1st embodiment as shown in Figure 4
Energy-ray irradiation unit 8 is filled as the 1st solidification equipment using the 2nd drying oven 110 in the 2nd embodiment as the 2nd solidification
Put.In this case, being used as curable resin, it is preferred to use the active energy ray-curable resin in the 1st embodiment.Enter one
Step ground, it is considered to which the heat cure in the 2nd curing process, the active energy ray-curable resin can contain thermal curing agents.
In addition, though in above-mentioned embodiment, it is shown that diaphragm 2 of being fitted on the polarizer 4 is used as the 2nd optical film
Example, but the 2nd optical film can also be other films.For example, it is also possible to which the films such as phase retardation film, compensation film for angular field of view are fitted in
On the polarizer 4, Polarizer is constituted.
In addition, in above-mentioned two embodiment, although show the example that laminated optical film is Polarizer, but be laminated
Optical film can also be other films.That is, in above-mentioned embodiment, although show the implementation that the 1st optical film is the polarizer 4
Mode, but the 1st optical film can also be other films.For example, it is also possible to be pasted on the films such as phase retardation film, transparent and electrically conductive film
Diaphragm 2 etc. is closed, laminated optical film is constituted.
Claims (16)
1. a kind of manufacture method of laminated optical film, it is characterised in that with following process：
By curable resin, make the 2nd optical film overlapped in the one or two sides of the 1st optical film, the stacking of acquisition layered product
Process；
Make the 1st curing process of the curable resin solidification；And
After the 1st curing process, further make the 2nd curing process of the curable resin solidification；
After the 1st curing process and before the 2nd curing process, do not transport described by contact-type conveyer
Layered product.
2. the manufacture method of laminated optical film according to claim 1, wherein, after the 1st curing process and
Before 2nd curing process, with carriage direction converting process, the carriage direction converting process is transported by non-contact type
The process for sending device to change the carriage direction of the layered product.
3. the manufacture method of laminated optical film according to claim 1 or 2, wherein, the 1st curing process and described
At least one party in 2 curing process is active energy beam irradiation process, and the active energy beam irradiation process is described
Active energy beam is irradiated on layered product and makes the process of the curable resin solidification.
4. the manufacture method of laminated optical film according to claim 1 or 2, wherein, the 1st curing process and described
2 curing process are active energy beam irradiation process, and the active energy beam irradiation process can be photograph well in the layered product
Penetrate active energy beam and make the process of the curable resin solidification.
5. the manufacture method of the laminated optical film according to claim 3 or 4, wherein, the active energy beam is ultraviolet
Line.
6. the manufacture method of the laminated optical film according to any one of claim 3~5, wherein, the 1st curing process
It is that while the layered product is adjacent in the outer peripheral face of the roller of rotation, the active-energy is irradiated on the layered product
Line, and make the active energy beam irradiation process of the curable resin solidification.
7. according to the manufacture method of laminated optical film according to any one of claims 1 to 6, wherein, solidify work the described 2nd
After sequence, curing process is added with least one of the curable resin solidification is further made；In the 2nd curing process
Afterwards and before whole additional curing process, the layered product is not transported by contact-type conveyer.
8. the manufacture method of laminated optical film according to claim 7, wherein, after the 2nd curing process and
Before the additional curing process, with carriage direction converting process, the carriage direction converting process is by non-contact type
The process that conveyer changes the carriage direction of the layered product.
9. according to the manufacture method of laminated optical film according to any one of claims 1 to 8, wherein, the 1st optical film is
The polarizer；2nd optical film is diaphragm.
10. a kind of manufacture device of laminated optical film, it is characterised in that possess following device：
By curable resin, make the 2nd optical film overlapped in the one or two sides of the 1st optical film, the stacking of acquisition layered product
Device；
Make the 1st solidification equipment of the curable resin solidification；And
The 2nd solidification dress for making the curable resin of the layered product provided by the 1st solidification equipment further solidify
Put；
Between the 1st solidification equipment and the 2nd solidification equipment, do not possess contact-type conveyer.
11. the manufacture device of laminated optical film according to claim 10, wherein, the 1st solidification equipment with it is described
Between 2nd solidification equipment, it is further equipped with changing the non-contact type conveyer of the carriage direction of the layered product.
12. the manufacture device of the laminated optical film according to claim 10 or 11, wherein, the 1st solidification equipment and institute
It is active energy beam irradiation unit to state at least one party in the 2nd solidification equipment, the active energy beam irradiation unit be to
The layered product irradiates active energy beam and makes the device of the curable resin solidification.
13. the manufacture device of laminated optical film according to claim 12, wherein, the 1st solidification equipment and the described 2nd
Solidification equipment is active energy beam irradiation unit, and the active energy beam irradiation unit is to irradiate to live to the layered product
Property energy-ray and make the device of curable resin solidification.
14. the manufacture device of the laminated optical film according to claim 12 or 13, it possesses the layered product and is adjacent to outside
The roller rotated while on side face, wherein, the 1st solidification equipment is to described in the roller being adjacent in rotation
The layered product on outer peripheral face, irradiates the active energy beam, and makes the device of the curable resin solidification.
15. the manufacture device of the laminated optical film according to any one of claim 10~14, wherein, possess at least one
Additional solidification equipment, the additional solidification equipment is further to make the institute of the layered product by the 2nd solidification equipment offer
State the device of curable resin solidification；Between the 2nd solidification equipment and the additional solidification equipment of whole, do not possess and connect
The type of touching conveyer.
16. the manufacture device of the laminated optical film according to any one of claim 10~15, wherein, the 1st optics
Film is the polarizer；2nd optical film is diaphragm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015180469 | 2015-09-14 | ||
| JP2015-180469 | 2015-09-14 |
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| CN107015303A true CN107015303A (en) | 2017-08-04 |
Family
ID=58390254
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610818658.2A Pending CN107015303A (en) | 2015-09-14 | 2016-09-12 | The manufacture method of laminated optical film and the manufacture device of laminated optical film |
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| Country | Link |
|---|---|
| JP (1) | JP2017058664A (en) |
| KR (1) | KR20170032186A (en) |
| CN (1) | CN107015303A (en) |
| TW (1) | TWI701148B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113613799A (en) * | 2019-04-25 | 2021-11-05 | 日东电工株式会社 | Method for manufacturing laminated polarizing film and apparatus for manufacturing laminated polarizing film |
| CN113853300A (en) * | 2019-06-27 | 2021-12-28 | 日东电工株式会社 | Method for producing laminated film |
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| CN113853300A (en) * | 2019-06-27 | 2021-12-28 | 日东电工株式会社 | Method for producing laminated film |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20170032186A (en) | 2017-03-22 |
| JP2017058664A (en) | 2017-03-23 |
| TWI701148B (en) | 2020-08-11 |
| TW201722714A (en) | 2017-07-01 |
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