CN108603973A - The manufacturing method of laminated optical film - Google Patents
The manufacturing method of laminated optical film Download PDFInfo
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- CN108603973A CN108603973A CN201780010113.1A CN201780010113A CN108603973A CN 108603973 A CN108603973 A CN 108603973A CN 201780010113 A CN201780010113 A CN 201780010113A CN 108603973 A CN108603973 A CN 108603973A
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
- B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
- B29C65/4845—Radiation curing adhesives, e.g. UV light curing adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
-
- 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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
-
- 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
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- 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
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- 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
-
- 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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
- B29L2009/005—Layered products coated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
-
- 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
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
- B32B2037/109—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure using a squeegee
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/412—Transparent
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/42—Polarizing, birefringent, filtering
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Polarising Elements (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of manufacturing method of laminated optical film, and laminated optical film can be inhibited to generate the defect caused by the damage of doubling roller, deformation.To importing the first optical film (2) between a pair of of doubling roller (1,1) of rotation and configuring the single-face side in the first optical film (2) or the second optical film (3) of two surface sides by adhesive layer or adhesive phase, the first optical film (2) is bonded with the second optical film (3).Herein, among a pair of of doubling roller (1,1), the outermost layer of at least one doubling roller (1) is rubber, the elastic restoration ratio of the rubber is 70% or more, therefore, doubling roller (1) is difficult to generate damage, and the deformation of doubling roller (1) is easy to restore.
Description
Technical field
The present invention relates to the manufacturing methods of laminated optical film.
Background technology
In the past, as one of the optical component for constituting liquid crystal display device etc., it is known that polarization plates.Polarization plates are usually polarizing
The single-face side of film or two surface sides are laminated with protective film, and mechanical strength, thermal stability, water resistance of polarizing coating etc. are made up.
Laminating method as polarizing coating and protective film, it is known that the method being bonded using a pair of of doubling roller.For example, specially
In sharp document 1, two films are bonded for a pair of of rubber rollers of rubber using roll surface.
Existing technical literature
Patent document
Patent document 1：No. 5399890 bulletins of Japanese Patent Publication No.
Invention content
Problems to be solved by the invention
In general, when being bonded optical film each other using doubling roller, if there is damage, deformation in doubling roller, these
Shape is transferred to optical film, leads to the laminated optical film for producing existing defects.
Thus, the object of the present invention is to provide a kind of manufacturing method of laminated optical film, can inhibit that optics is laminated
Film generates the defect caused by the damage of doubling roller, deformation.
The method for solving problem
The present invention is a kind of manufacturing method of laminated optical film, wherein imports first between a pair of of doubling roller of rotation
Optical film and the single-face side in the first optical film or the second optics of two surface sides are configured by adhesive layer or adhesive phase
First optical film is bonded by film with the second optical film, and among a pair of of doubling roller, the outermost layer of at least one doubling roller is
The elastic restoration ratio of rubber, rubber is 70% or more.
In the manufacturing method of the laminated optical film, a pair of of doubling roller at least one of doubling roller outermost layer be rubber
Glue, elastic restoration ratio are 70% or more, and therefore, doubling roller is difficult to generate damage, and the deformation of doubling roller is easy to restore.Therefore,
According to the manufacturing method of the laminated optical film, laminated optical film can be inhibited to generate and lacked caused by the damage of doubling roller, deformation
It falls into.
Herein, at least 1 among the second optical film can be hyaline membrane.
Also, hyaline membrane can be protective film, and the first optical film can be polarizing coating.In turn, polarizing coating can include
Polyvinyl alcohol resin.
In the manufacturing method of the laminated optical film, the thickness of polarizing coating can be for 20 μm hereinafter, the thickness of protective film can
30 μm are thought hereinafter, the thickness of the laminated optical film can be 100 μm or less.In general, the thickness of laminated optical film is smaller,
Then more it is easy to happen the defect caused by the damage of doubling roller, deformation, therefore, it can be stated that each film with the thickness is suitable for answering
With the present invention.
The other manner of manufacturing method as the laminated optical film, the first optical film can be to have polarizing coating and protection
First optical film can be bonded by the polarization plates of film by adhesive phase with the second optical film.
In this approach, the thickness of polarizing coating can be 20 μm hereinafter, the thickness of protective film can be 30 μm hereinafter, polarization
The thickness of plate can be 100 μm or less.
In above-mentioned arbitrary manufacturing method, according to JIS K 6253 measure rubber rubber hardness can be 83~
97°.Even the rubber hardness, if elastic restoration ratio meets above-mentioned value, the effect of the present invention is played.
In above-mentioned arbitrary manufacturing method, the outermost layer of a pair of of doubling roller all can be rubber, the elasticity of rubber restores
Rate can be 70% or more.At this point, playing the effect of the present invention better.
In above-mentioned arbitrary manufacturing method, at least one among a pair of of doubling roller of at least one pressing roller contact can be made
A doubling roller presses the doubling roller to a pair of of doubling roller direction closer to each other.At this point, being easy the width to doubling roller
Direction applies uniform load-carrying, so it is preferred that.
The effect of invention
In accordance with the invention it is possible to provide a kind of manufacturing method of laminated optical film, laminated optical film can be inhibited to generate
The defect caused by the damage of doubling roller, deformation.
Description of the drawings
Fig. 1 is the schematic diagram for the appearance that each film is bonded using a pair of of doubling roller.
Fig. 2 is the sectional view of the polarization plates described in first embodiment.
Fig. 3 is the definition graph of the computational methods of elastic restoration ratio.
(a) of Fig. 4 is the sectional view of the polarization plates of the subsidiary adhesive described in second embodiment.(b) of Fig. 4 is second
The sectional view of the polarization plates of other subsidiary adhesives described in embodiment.
Specific implementation mode
Hereinafter, being suitable for carrying out mode for the present invention, it is described in detail while with reference to attached drawing.It needs to illustrate
It is in the drawings, the same symbol to be marked to same section or corresponding portion, omits repeated explanation.In addition, the size of each attached drawing
Ratio is not necessarily consistent with actual dimensional ratios, especially with respect to thickness, has carried out exaggerating description.
<First embodiment>
As first embodiment, showing will the polarizing coating as the first optical film and the protective film as the second optical film
It is bonded, manufactures the example of the polarization plates as laminated optical film.
As shown in Figure 1, the protective film 3,3 by polarizing coating 2 and configuration in its two surface side is directed into rotation while transporting
A pair of of doubling roller 1,1 between, formed and be laminated with the stacked films 4 of two films.
Herein, before polarizing coating 2 and protective film 3,3 will be imported into a pair of of doubling roller 1,1, make polarizing coating 2 and protection
Adhesive layer 5,5 is sandwiched between film 3,3 (with reference to Fig. 2).Can be the two of polarizing coating 2 as the method for sandwiching adhesive layer 5
The mode of face coating adhesive can also be the face coating adhesive opposite with polarizing coating 2 among the face of protective film 3,3
Mode.By bonding agent, polarizing coating 2 is bonded with protective film 3,3.
When being bonded, a pair of of pressing roller 6,6 that a pair of of doubling roller 1,1 can be arranged in a manner of being in contact with it by
Pressure.Herein, a pair of of pressing roller 6,6 is arranged on the straight line for linking a pair of of doubling roller 1,1 and the position of doubling roller 1,1 is clamped
Place.Also, pressing roller 6,6 is pressed to the direction closer to each other of doubling roller 1,1.If using pressing roller 6,6, it is easy to fitting
The width direction of roller 1,1 applies uniform load-carrying, so it is preferred that.It should be noted that pressing roller is not necessarily required in pairs, also may be used
In the way of being set as the doubling roller by a pressing roller to press side.
Doubling roller 1,1 and pressing roller 6,6 can rotate.By by among doubling roller 1,1 and pressing roller 6,6 at least
One carries out rotation driving, and doubling roller 1,1 rotates, and polarizing coating 2 can be bonded and be transported with protective film 3,3.Not
The roller of rotation driving is carried out as the rotation of the roller contacted drives and rotates.
In the stacked film 4 after a pair of of doubling roller 1,1, polarizing coating 2 is carried out with protective film 3,3 by adhesive layer 5,5
Bonding.With the shape of polarization plates shown in Fig. 2 (laminated optical film) 10 by adhesive layer 5 is cured after stacked film 4
Formula is completed.
Protective film 3 is laminated to be formed by adhesive layer 5 and on the two sides of polarizing coating 2 in polarization plates 10.
As the material of polarizing coating 2, the well known materials for being used to manufacture polarization plates all the time can be used, example can be enumerated
Such as polyvinyl alcohol resin, vinylite, Ethylene/vinyl acetate (EVA) resin, polyamide, Polyester
Resin etc..
Wherein, preferably polyvinyl alcohol resin.Usually as the manufacture starting material of polarizing coating 2, such as use thickness
For the unstretching film of 5~100 μm, preferably 10~80 μm of polyvinyl alcohol resin film.Polarizing coating 2 is by by the unstretching film
Carry out dyeing processing, boric acid processing, stretch processing and obtain.
The thickness of polarizing coating 2 is preferably 3~20 μm, more preferably 5~18 μm, further preferably 7~16 μm.
Protective film 3 is the interarea for preventing polarizing coating 2, the film of the rupture of end, damage.Herein, " protective film " refers to：It is various
It can be laminated among the film of polarizing coating 2, the film being physically laminated at the position of polarizing coating 2.
Protective film 3 is preferably made of known various transparent resin films in the field of polarization plates.It can enumerate for example with three
Acetylcellulose is the cellulose-based resin of typical example, using polypropylene-based resin as the polyolefin-based resins of typical example, with drop
Bornylene system resin is the annular ethylene series resin of typical example, using polymethyl methacrylate system resin as the acrylic acid of typical example
It is resin, using PET series resin as polyester based resin of typical example etc..Wherein, object is represented as cellulose
It is resin.
Herein, it is 70% or more that protective film, which for " transparent " refers to according to the total light transmittance that JIS K 7361 are measured,.
Protective film 3,3 can be formed each other by same material, can also be formed by not same material.
Can be the film without optical function, or phase difference film, brightness enhancement film etc as protective film 3
The film for having both optical function.
The thickness of protective film 3 is preferably 5~30 μm, more preferably 7~27 μm, further preferably 9~25 μm.
As bonding agent, the various bonding agents for being used to manufacture polarization plates all the time can be used.For example, from weatherability,
The viewpoints such as refractive index, cationically polymerizable are set out, and preferably intramolecular is free of the epoxy resin of aromatic rings.Furthermore it is preferred that passing through
The irradiation of active energy beam (ultraviolet light or hot line) and cure.
As epoxy resin, preferably such as hydrogenated epoxy resin, alicyclic epoxy resin, aliphatic epoxy resin.
By adding polymerization initiator (for example, the light cationic polymerization for polymerizeing it by irradiation using ultraviolet light to epoxy resin
Initiator, the hot cationic polymerization for making it polymerize for being irradiated using hot line) and other additive (sensitizers
Deng), the composition epoxy resin of coating can be prepared to use.
In addition, as bonding agent, acrylamide, acrylate, urethane acrylate, epoxy third can also be used
The acrylic resins such as olefin(e) acid ester；The water system bonding agent of polyethenol series.
Polarization plates 10 fit in the one or two sides of the displays such as liquid crystal cells unit (image-displaying member).Polarization plates 10
The other optical layers being laminated on protective film 3 can be further contained in.As other optical layers, can enumerating transmission, certain is polarized
Light and reflection show the reflective polarizing film of the polarised light of opposite to that property；Surface has the subsidiary anti-dazzle of concaveconvex shape
The film of function；The film of subsidiary surface anti-reflection function；Surface has the reflectance coating of reflection function；Have both reflection function and transmission work(
The Transflective film of energy；View angle compensation film etc..
Thickness by this three layers polarization plates 10 formed of polarizing coating 2 and protective film 3,3 is preferably 20~100 μm, more preferably
It is 25~90 μm, further preferably 30~80 μm.
The outermost layer of a pair of of doubling roller 1,1 is formed by rubber.Doubling roller 1,1 can be formed with its entirety by rubber, also may be used
It is formed by metal with central part and only outermost layer is formed by rubber.In addition, as other manner, it can be with a doubling roller 1 most
Outer layer is formed by rubber, and the outermost layer of another doubling roller 1 is formed by metal.That is, among a pair of of doubling roller 1,1, at least
One outermost layer is formed by rubber.
The roller diameter of doubling roller 1,1 be preferably 50~500mm, more preferably 80~450mm, further preferably 100~
400mm.It is easy fully to assign line pressure to each film if the roller diameter of doubling roller 1,1 is in this range, when being bonded, is easy to inhibit
Stacked film 4 generates fold, bubble etc..
The thickness of rubber layer is preferably 1~50mm, more preferably 5~40mm, is more preferably 10~30mm, is especially excellent
It is selected as 10~20mm.If the thickness of rubber layer is excessively thin, the influence of metallic roll is strong, and in fitting, film easy tos produce fold etc..
On the other hand, if the thickness of rubber layer is blocked up, the line pressure of each film when being bonded sometimes for being stacked becomes inadequate, from
And the defects of bubble is generated in stacked film 4.In addition, if the thickness of rubber layer is blocked up, then manufactures rubber rollers and expend largely
It is time, therefore, not preferred from economic aspect.It should be noted that going out from the viewpoint of the cementability of rubber layer and metallic roll
Hair, rubber layer, which can be laminated with, forms different various materials.
The elastic restoration ratio of the rubber is 70% or more.It is difficult to generate the change of damage, generation from the surface of rubber when fitting
It describes from the perspective of easily restoring, elastic restoration ratio is preferably 75% or more, is more preferably 80% or more, further preferably
85% or more.As the upper limit of elastic restoration ratio, 99%, 97%, 95% etc. can be enumerated.
Herein, " elastic restoration ratio " refers to：Indentation live load is assigned to the component of display plastic deformation and flexible deformation
(Ya Write body bodyguard things amount) when, relative to based on two kinds deform live load (bodyguard thing amount) total amount, what flexible deformation was participated in
Ratio.
Elastic restoration ratio can use micro-hardness tester (for example, product name " Fisher Scope HM2000 ", Fisher
Instruments corporations) it is measured.I.e., it is possible to by Vickers indenter (Buddha's warrior attendant is made of stones, to face angle is 136 °) phase of tetragonal pyramid
Subjects are pressed into the loading speed of 350mN/10s from surface, after reaching maximum load 350mN, are being loaded
Have and keep 10s in the state of maximum load, thereafter, speed is unloaded by Vickers indenter from subjects surface with 350mN/10s
Removal, by this time test load and compression distance find out.
Specifically, compression distance (h) when Vickers indenter is pressed into subjects and the test load that observes
When the relationship of size (F) is shown in table, as shown in Figure 3.
Herein, among the height of the h expression Vickers indenters of horizontal axis, the length for the part being pressed into subjects.From measurement
Starting point t0It rises and passes through t1To reaching t2Until be pressed into Vickers indenter, thereafter, discharge be pressed into when reach t3。t3The compression distance at place
hpAs less than from t2The compression distance h that the mitigation at place is predicted when being line stylecValue.Herein, by t0~t3Each point surround area
Domain is the live load (W of plastic deformationplast), the t generated when being alleviated when release is pressed into2-t3Line, with pass through t2And it is parallel
In the h of the longitudinal axismaXLine and the live load (W that horizontal axis area encompassed is flexible deformationelast)。
Herein, elastic restoration ratio is such as undefined value：
Elastic restoration ratio (%)={ Welast/(Welast+Wplast)}×100。
The material of outermost rubber as doubling roller 1 can enumerate NBR (acrylonitrile-butadiene rubber), amino first
Acid esters rubber, silicon rubber, EPDM rubber, butyl rubber, fluorubber etc..
The rubber hardness of the rubber according to JIS K 6253-3 (2012) when being measured, preferably 83~97 °, more
Preferably 85~97 °, further preferably 85~90 °.Generally, there are the value of rubber hardness is smaller, elastic restoration ratio is got over
High tendency, but in present embodiment, even if rubber hardness is within the above range, elastic restoration ratio also shows that desired value.
The material of pressing roller 6,6 can be metal, can also be rubber.For rubber when, as preferred value, elasticity is extensive
Multiple rate and rubber hardness can enumerate numberical range identical with the elastic restoration ratio of the rubber in doubling roller 1 and rubber hardness.
The optimum condition of the pressure applied to the film being clamped by doubling roller 1,1 in fitting is not particularly limited, preferably
0.01~10MPa, more preferably 0.1~5MPa.If above-mentioned pressure is big, exist be easy to happen by doubling roller 1,1 damage,
The tendency of defect caused by deformation.In addition, if above-mentioned pressure is small, then exists uniformly be bonded, easy to produce bubble etc. and lack
Sunken tendency.
The preferred condition of the tension applied to each film in fitting can be changed according to the material of film, binding temperature etc.,
For the film before fitting, preferably 10~1000N/m, more preferably 50~500N/m.In addition, applied to the film after fitting
Power is preferably 10~2000N/m, more preferably 100~1500N/m.If tension is within the above range, film is more difficult to produce
Raw fold, relaxation can further decrease the possibility that elongation or fracture occur for film.
In the manufacturing method of polarization plates 10 described above, the outermost layer of a pair of of doubling roller 1,1 is rubber, and elasticity is extensive
Multiple rate is 70% or more, and therefore, doubling roller 1,1 is difficult to happen damage, deformation.In addition, even if doubling roller 1,1 occurs damage, becomes
Shape, they are also difficult to be transferred to polarization plates 10.Therefore, according to the manufacturing method of the polarization plates 10, polarization plates 10 can be inhibited to produce
Defect caused by raw damage by doubling roller 1,1, deformation.
Especially, the film to be bonded or the thickness for the polarization plates to be manufactured are smaller, then are more easy to happen the damage by doubling roller
Defect caused by wound, deformation, therefore, it can be stated that the manufacturing method is suitable for the small film of coating thickness.In addition, the film small in thickness
Fitting in, by the way that elastic restoration ratio and rubber hardness are set as above-mentioned value, be easy to be well controllled surface bad (flesh is bad),
The appearances such as striped.
It should be noted that in the above embodiment, shows and be bonded the example of protective film 3,3 on the two sides of polarizing coating 2
(three pieces fitting), but the mode (two panels fitting) of the single-sided lamination protective film 3 only in polarizing coating 2 can be set as.
It should be noted that in the above embodiment, show that the first optical film is polarizing coating 2 and the second optical film is guarantor
The example of cuticula 3,3, but they can be the film of other types.In addition, the film being bonded on the two sides of polarizing coating 2 is not necessarily required to
It is film of the same race, can also be film not of the same race.
<Second embodiment>
As second embodiment, show the polarization plates as the first optical film and other light as the second optical film
It learns film to be bonded, to manufacture the example of " polarization plates of subsidiary adhesive " as laminated optical film.Hereinafter, for the
The different point of one embodiment illustrates.
As shown in (a) of Fig. 4, the polarization plates 20A of the subsidiary adhesive manufactured in the manufacturing method of present embodiment is
The single side of the polarization plates 10 manufactured in one embodiment is fitted with temporary protective film (the second optical film) 8 by adhesive phase 7.
Temporary protective film 8 be can from be laminated with its polarization plates 10 remove film, be for protect be laminated with interim guarantor
The surface of the protective film 3 of cuticula 8 is not damaged, the film of abrasion etc..It is preferably poly- to benzene two as the material of temporary protective film 8
Formic acid glycol ester, polyethylene naphthalate, polyethylene glycol isophthalate, polybutylene terephthalate (PBT) etc. are poly-
Ester system resin can use material identical with protective film 3.
As long as having necessary strength and having the film of optics adaptability, then other plastic foils can be used, such as poly-
Alkene mesentery, poly- acetate membrane, polycarbonate membrane, polyphenylene sulfide film, PA membrane, polychloroethylene film, ethane-acetic acid ethyenyl ester
Co-polymer membrane, various liquid crystalline polymer films etc..
Temporary protective film 8 is after being laminated in protective film 3, until being bonded when the use of the polarization plates 20A of subsidiary adhesive
In protective film 3, removed when in use from protective film 3.At this point, adhesive phase 7 is in the state of being attached to 8 side of temporary protective film
It is removed from 10 side of polarization plates.
The thickness of temporary protective film 8 is preferably 5~70 μm, more preferably 10~60 μm, further preferably 15~50 μm.
Adhesive phase 7 can be made of acrylic resin, silicone-based resin, polyester, polyurethanes, polyethers etc..
The thickness of adhesive phase 7 is preferably 2~40 μm, more preferably 4~25 μm.
Can be for example on temporary protective film 8 to the one dosage type low temperature of acrylic acid series as the method for setting adhesive phase 7
Or after the various adhesives etc. headed by two adhesives of dosage form, elastomeric adhesive, silicone-based adhesive form adhesive phase 7,
The method for being laminated in protective film 3 again usually will over the binder layer be covered in the state of stripping film and temporarily be wound into roller shape
Product used after peeling the stripping film off before will being bonded (two fitting).Furthermore, it is possible to be the protection in polarization plates 10
Method of the coating comprising above-mentioned resin, the solution of arbitrary adding ingredient on film 3.After adhesive phase 7 is arranged, use is shown in FIG. 1
Polarization plates 10 are bonded (two fittings) by a pair of of doubling roller with temporary protective film 8, manufacture the polarization plates of subsidiary adhesive
20A。
In present embodiment, the polarization plates 20A of subsidiary adhesive can also be inhibited to generate damage, change by doubling roller 1,1
Defect caused by shape.
Second optical film illustrated above is the example of temporary protective film 8, but shown in (b) of the second optical film such as Fig. 4, can
Temporary protective film 8 is replaced to be diaphragm 9.
Diaphragm 9 is for protection adhesive phase 7, the purpose for preventing foreign matter attachment etc. and the strippable film that is bonded, attached
It is stripped off when the use of the polarization plates 20B with adhesive and exposes adhesive phase 7.Diaphragm 9 can be by such as polyethylene etc
The polyester based resin etc. of polyethylene-based resin, the polypropylene-based resin of polypropylene, polyethylene terephthalate etc
It constitutes.Wherein, the preferably stretched film of polyethylene terephthalate.
The adhesive phase 7 for being laminated with diaphragm 9 is that polarization plates 10 are being fitted in other articles (such as liquid crystal cells, touch-control
Panel) when the layer that functions.As the material of adhesive phase 7, material identical with when being laminated temporary protective film 8 can be used
Material.
It can be to contact in order to be easily peeled off when using the polarization plates 20B of subsidiary adhesive about diaphragm 9
The face of adhesive phase 7 utilizes the implementations demoulding processing such as silicone resin.If peeling diaphragm 9 off, adhesive phase 7 remains on polarization plates
10 sides.
The thickness of diaphragm 9 is preferably 5~70 μm, more preferably 10~60 μm, further preferably 15~50 μm.
It should be noted that in present embodiment, show that polarization plates 10 are further equipped with temporary protective film 8 or diaphragm 9
Subsidiary adhesive polarization plates 20A, 20B example, but polarization plates 20A, 20B of subsidiary adhesive can have interim protection
Both film 8 and diaphragm 9.
More than, it is illustrated for the mode that is suitable for carrying out of the present invention, but the present invention is not limited to above-mentioned implementation completely
Mode.For example, in the above embodiment, it is illustrated the film with polarizability as the first optical film, but can also be by it
It does not have the optical film of polarizability as object.
Embodiment
Hereinafter, enumerating embodiment and comparative example, present disclosure is further illustrated.It should be noted that this hair
It is bright to be not limited to following embodiments.
Used film is as follows.
Polyvinyl alcohol resin film (trade name " VF-PE#3000 ", Kuraray Corporation system) is used iodine staining by polarizing coating ...
And it after stretching, is dried and obtains.Thickness is 12 μm.
Protective film A ... tri acetyl celluloses film (trade name " KONICA MINOLTA OPTICAL FILM
KC2UAW ", U ニ カ ミ ノ Le タ ア De バ Application ス ト レ イ ヤ ー (Konica Minolta Advanced Layer) company
System).Thickness is 25 μm.
Protective film B ... annular ethylene series resins film (trade name " ZEONOR FILM ZF14-23 ", ZEON companies of Japan
System).Thickness is 23 μm.
Base material film and acrylic acid series tree of the temporary protective film ... of subsidiary adhesive by polyethylene terephthalate
The film (trade name " AS3-304 (19) ", rattan lumber's industry corporation) that the adhesive phase of fat is formed.Thickness is 58 μm (except debindered
The thickness of base material film itself after oxidant layer is 38 μm).
The diaphragm ... of subsidiary adhesive demoulds the diaphragm and third of the polyethylene terephthalate handled by implementing
The film (trade name " #L2-NCF ", LINTEC corporations) that the adhesive of olefin(e) acid system resin is formed.Thickness is 43 μm (except debindered
The thickness of diaphragm itself after oxidant layer is 38 μm).
Bonding agent is prepared as follows.Acetoacetyl modified polyvinyl alcohol (trade name is dissolved into the water of 100 parts of parts by weight
" Gohsefimer Z-200 ", Nippon Synthetic Chemical Industry Co.'s system) 4 parts by weight and sodiam glyoxlate (trade name " SPM-01 ", day
This synthetic chemical industry corporation) 4 parts by weight, prepare water system bonding agent.
Profit makes the rubber material used in doubling roller and pressing roller with the following method.
NBR polymer, sulphur, silica, phthalic acid system plasticizer are measured in a manner of reaching predetermined weight ratio,
After being kneaded with kneading machine, roll is shaped to by sheet forming and is used.The composition of made rubber material is set as
Weight rate below.
Rubber material A
NMR polymer:Sulphur:Silica:Phthalic acid system plasticizer=100:12:60:9.
Rubber material B
NMR polymer:Sulphur:Silica:Phthalic acid system plasticizer=100:7:60:8.
Rubber material C
NMR polymer:Sulphur:Silica:Phthalic acid system plasticizer=100:8:70:3.
The elastic restoration ratio (%) and hardness (°) of made rubber material are shown in table 1.
Used roller is as follows.
The whole roller diameter of outermost layer doubling roller ... formed of rubber is 300mm, the thickness of outermost rubber material
For 16.5mm.Rubber material has used above-mentioned rubber material A, B, C.
The stainless steel of metallic roll ....
Pressing roller ... rubber material is above-mentioned rubber material A.
(Examples 1 and 2)
Using doubling roller shown in table 1, protective film A is closed in a face paste of polarizing coating respectively, closes and protects in another face paste
Cuticula B (three pieces fitting), obtains polarization plates.At this point, bonding agent is coated on polarizing coating side.The thickness of gained polarization plates is 60 μm.
(embodiment 3)
Using doubling roller shown in table 1, by the temporary protective film of the polarization plates manufactured in embodiment 1 and subsidiary adhesive into
Row fitting (two panels fitting) obtains the polarization plates of subsidiary adhesive.
(embodiment 4)
Using doubling roller shown in table 1, the polarization plates manufactured in embodiment 1 are bonded with the diaphragm of subsidiary adhesive
(two panels fitting) obtains the polarization plates of subsidiary adhesive.
(embodiment 5)
Using doubling roller shown in table 1, protective film A is closed in a face paste of polarizing coating respectively, closes and protects in another face paste
Cuticula B (three pieces fitting), obtains polarization plates.At this point, bonding agent is coated on polarizing coating side.In addition, using pressing roller by metallic roll
It is pushed to rubber rollers side.The thickness of gained polarization plates is 60 μm.
(comparative example 1)
Using doubling roller shown in table 1, protective film A is closed in a face paste of polarizing coating respectively, closes and protects in another face paste
Cuticula B (three pieces fitting), obtains polarization plates.At this point, bonding agent is coated on polarizing coating side.The thickness of gained polarization plates is 60 μm.
Observe the polarization plates of the polarization plates obtained in Examples 1 to 5 and comparative example 1 and subsidiary adhesive by visual observation
Surface.The results are shown in Table 1 for it.
Evaluate mark
A ... does not observe defect.
B ... slightly observes the defect being regarded as transferred with damage or the deformation of doubling roller (in allowable range).
C ... observes a large amount of defects for being regarded as damage or deformation transferred with doubling roller.
[table 1]
[table 1]
Reference sign
1 ... doubling roller, 2 ... polarizing coatings (the first optical film), 3 ... protective films (the second optical film), 4 ... stacked films, 5 ... are glued
Connect oxidant layer, 6 ... pressing roller, 7 ... adhesive phases, 8 ... temporary protective films (the second optical film), 9 ... diaphragms (the second optical film),
10 ... polarization plates (laminated optical film, the first optical film), 20A, 20B ... are attached to the polarization plates (laminated optical film) of adhesive.
Claims (10)
1. a kind of manufacturing method of laminated optical film, wherein to imported between a pair of of doubling roller of rotation the first optical film and
The single-face side in first optical film or the second optical film of two surface sides are configured by adhesive layer or adhesive phase, by institute
The first optical film is stated to be bonded with second optical film,
Among the pair of doubling roller, the outermost layer of at least one doubling roller is rubber,
The elastic restoration ratio of the rubber is 70% or more.
2. the manufacturing method of laminated optical film according to claim 1, wherein at least 1 among second optical film
Piece is hyaline membrane.
3. the manufacturing method of laminated optical film according to claim 2, wherein the hyaline membrane is protective film,
First optical film is polarizing coating.
4. the manufacturing method of laminated optical film according to claim 3, wherein the polarizing coating includes polyethenol series tree
Fat.
5. the manufacturing method of laminated optical film according to claim 3 or 4, wherein the thickness of the polarizing coating is 20 μm
Hereinafter,
The thickness of the protective film be 30 μm hereinafter,
The thickness of the laminated optical film is 100 μm or less.
6. the manufacturing method of laminated optical film according to claim 2, wherein first optical film is to have polarizing coating
With the polarization plates of protective film,
First optical film is bonded with second optical film by described adhesive layer.
7. the manufacturing method of laminated optical film according to claim 6, wherein the thickness of the polarizing coating be 20 μm with
Under,
The thickness of the protective film be 30 μm hereinafter,
The thickness of the polarization plates is 100 μm or less.
8. the manufacturing method of laminated optical film according to any one of claims 1 to 7, wherein according to JIS K 6253
The rubber hardness of the rubber measured is 83~97 °.
9. according to the manufacturing method of laminated optical film according to any one of claims 1 to 8, wherein the pair of doubling roller
Outermost layer be rubber,
The elastic restoration ratio of the rubber is 70% or more.
10. according to the manufacturing method of laminated optical film according to any one of claims 1 to 9, wherein at least one is made to press
Roller contact the pair of doubling roller at least one of the doubling roller, which is connect each other to the pair of doubling roller
Close direction is pressed.
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| JP2016-021691 | 2016-02-08 | ||
| JP2016021691 | 2016-02-08 | ||
| JP2016202860A JP6378731B2 (en) | 2016-02-08 | 2016-10-14 | Method for producing laminated optical film |
| JP2016-202860 | 2016-10-14 | ||
| PCT/JP2017/003944 WO2017138449A1 (en) | 2016-02-08 | 2017-02-03 | Method for manufacturing layered optical film |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2017138449A1 (en) | 2017-08-17 |
| CN113524702B (en) | 2023-06-20 |
| CN108603973B (en) | 2021-12-28 |
| CN113524702A (en) | 2021-10-22 |
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