CN105829062A - Method for producing resin plate - Google Patents
Method for producing resin plate Download PDFInfo
- Publication number
- CN105829062A CN105829062A CN201480069171.8A CN201480069171A CN105829062A CN 105829062 A CN105829062 A CN 105829062A CN 201480069171 A CN201480069171 A CN 201480069171A CN 105829062 A CN105829062 A CN 105829062A
- Authority
- CN
- China
- Prior art keywords
- delay
- chill roll
- length
- face
- resin sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 116
- 239000011347 resin Substances 0.000 title claims abstract description 116
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 229920005668 polycarbonate resin Polymers 0.000 claims abstract description 19
- 239000004431 polycarbonate resin Substances 0.000 claims abstract description 19
- 230000009477 glass transition Effects 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims description 47
- 238000000034 method Methods 0.000 claims description 30
- 239000004973 liquid crystal related substance Substances 0.000 claims description 28
- 239000000113 methacrylic resin Substances 0.000 claims description 22
- 230000009467 reduction Effects 0.000 claims description 22
- 229920001169 thermoplastic Polymers 0.000 claims description 10
- 239000004416 thermosoftening plastic Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 abstract description 8
- 229920005992 thermoplastic resin Polymers 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 18
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 16
- 238000012360 testing method Methods 0.000 description 14
- 239000003795 chemical substances by application Substances 0.000 description 10
- 230000008859 change Effects 0.000 description 8
- 210000003128 head Anatomy 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- 150000002148 esters Chemical class 0.000 description 7
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- -1 methyl acrylic ester Chemical class 0.000 description 6
- 239000000178 monomer Substances 0.000 description 6
- 229920001577 copolymer Polymers 0.000 description 5
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 4
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000010422 painting Methods 0.000 description 3
- 238000012800 visualization Methods 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- WDQMWEYDKDCEHT-UHFFFAOYSA-N 2-ethylhexyl 2-methylprop-2-enoate Chemical compound CCCCC(CC)COC(=O)C(C)=C WDQMWEYDKDCEHT-UHFFFAOYSA-N 0.000 description 2
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 125000005907 alkyl ester group Chemical group 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 239000002216 antistatic agent Substances 0.000 description 2
- AOJOEFVRHOZDFN-UHFFFAOYSA-N benzyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC1=CC=CC=C1 AOJOEFVRHOZDFN-UHFFFAOYSA-N 0.000 description 2
- OIWOHHBRDFKZNC-UHFFFAOYSA-N cyclohexyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC1CCCCC1 OIWOHHBRDFKZNC-UHFFFAOYSA-N 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000004611 light stabiliser Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000012860 organic pigment Substances 0.000 description 2
- QIWKUEJZZCOPFV-UHFFFAOYSA-N phenyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC1=CC=CC=C1 QIWKUEJZZCOPFV-UHFFFAOYSA-N 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 238000010094 polymer processing Methods 0.000 description 2
- DCTVCFJTKSQXED-UHFFFAOYSA-N (2-ethyl-2-adamantyl) 2-methylprop-2-enoate Chemical compound C1C(C2)CC3CC1C(CC)(OC(=O)C(C)=C)C2C3 DCTVCFJTKSQXED-UHFFFAOYSA-N 0.000 description 1
- FDYDISGSYGFRJM-UHFFFAOYSA-N (2-methyl-2-adamantyl) 2-methylprop-2-enoate Chemical compound C1C(C2)CC3CC1C(OC(=O)C(=C)C)(C)C2C3 FDYDISGSYGFRJM-UHFFFAOYSA-N 0.000 description 1
- BQTPKSBXMONSJI-UHFFFAOYSA-N 1-cyclohexylpyrrole-2,5-dione Chemical class O=C1C=CC(=O)N1C1CCCCC1 BQTPKSBXMONSJI-UHFFFAOYSA-N 0.000 description 1
- IYMZEPRSPLASMS-UHFFFAOYSA-N 3-phenylpyrrole-2,5-dione Chemical compound O=C1NC(=O)C(C=2C=CC=CC=2)=C1 IYMZEPRSPLASMS-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- GCTPMLUUWLLESL-UHFFFAOYSA-N benzyl prop-2-enoate Chemical compound C=CC(=O)OCC1=CC=CC=C1 GCTPMLUUWLLESL-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- KBLWLMPSVYBVDK-UHFFFAOYSA-N cyclohexyl prop-2-enoate Chemical compound C=CC(=O)OC1CCCCC1 KBLWLMPSVYBVDK-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- WRAQQYDMVSCOTE-UHFFFAOYSA-N phenyl prop-2-enoate Chemical compound C=CC(=O)OC1=CC=CC=C1 WRAQQYDMVSCOTE-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
- B29C48/9155—Pressure rollers
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0021—Combinations of extrusion moulding with other shaping operations combined with joining, lining or laminating
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92923—Calibration, after-treatment or cooling zone
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
-
- 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
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
- B29K2033/04—Polymers of esters
- B29K2033/12—Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
Abstract
Provided is a method for producing an extruded resin plate that reduces the proportion of decrease in the in-plane retardation value due to heating. A method for producing an extruded resin plate using a T die (11), first through third cooling rolls (12-14), and a take-off roll (15), wherein the temperature of the entire resin at a position where a thermoplastic resin laminate detaches from the third cooling roll (14) is the glass transition temperature of polycarbonate resin or lower, the circumferential velocity ratio (V3/V2) of the circumferential velocity (V3) of the third cooling roll (14) and the circumferential velocity (V2) of the second cooling roll (13) is from 1.0 to 1.01, the circumferential velocity ratio (V4/V2) of the circumferential velocity of the take-off roll (15) and the circumferential velocity (V2) of the second cooling roll (13) is from 0.98 to 1.00, and bank formation is controlled so that the predetermined thickness of the extruded resin plate is greater than 1.0 to 1.05 or less.
Description
Technical field
The present invention relates to the manufacture method of resin plate.More specifically, even if relating to manufacturing the method that the length of delay in face the most also can be made to obtain the resin plate controlled.
Background technology
Liquid crystal display arranges protection board on its front side sometimes for scuffing preventing surface etc..As protection board, have studied to use at least one face of resin substrate, form marresistance (painting property firmly), low reflexive curing overlay film and the resin plate that obtains.
Such as, Patent Document 1 discloses: using methacrylic resin plate as substrate, form curing overlay film on its at least one face, the display window protective panel as the portable data assistance of crystal liquid mode uses.
Additionally, Patent Document 2 discloses: the plywood obtained using stacking methacrylic resin layer on polycarbonate resin face is as substrate, this methacrylic resin layer is formed curing overlay film, thus uses in liquid crystal display cover.
As the manufacture method of resin plate, it is known to injection molding method, extrusion molding method etc..
Liquid crystal display protection board is arranged on the front face side (identification person side) of liquid crystal display and through this protection board to watch the picture of liquid crystal display; but for conventional liquid crystal display protection board; the polarity making the emergent light from the liquid crystal display outgoing as polarisation hardly changes; therefore; when putting on polarized sunglasses to watch picture; the axis of homology angulation of the polarizing axis according to emergent light and polarized sunglasses, picture is dimmed and be difficult to see that image sometimes.Therefore, the liquid crystal display protection board of the reduction of the identification of the image that can suppress when through polarity optical filters such as polarized sunglasses to watch the picture of liquid crystal display is studied.
Such as, Patent Document 3 discloses the technology that the length of delay in face is set as 85～300nm.
The surface of resin substrate as above is formed in the operation of marresistance (painting property firmly) and low reflexive curing overlay film, sometimes resin substrate is heated to about the temperature of 100 DEG C.Such as, in the case of covering material is Thermocurable, the curing process at overlay film heats.It addition, in the case of covering material is photo-curable, the irradiation along with light is heated.It addition, in the case of covering material contains organic solvent equal solvent, heat to be dried.
But, make length of delay reduce owing to resin substrate is exposed under high temperature, the most uncontrollable to wanting the scope that reaches.
In addition; in the case of on-vehicle display, portable phone, the smart mobile phones such as the auto-navigation system at use liquid crystal display were positioned in automobile under the sunshine in summer; liquid crystal display protection board remains on and is heated to high temperature sometimes, and the length of delay of resin substrate may reduce.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2004-299199 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2006-103169 publication
Patent documentation 3: Japanese Unexamined Patent Publication 2010-085978 publication
Summary of the invention
Invent problem to be solved
Even if the manufacture method of the resin plate that the reduction rate that it is an object of the invention to provide the length of delay being heated in high temperature, face is the least and liquid crystal display protection board.
For the method solving problem
The present inventor conducts in-depth research in order to achieve the above object, found that comprise the present invention of following mode.
That is, the present invention comprises following mode.
The extruded resin sheet of the present invention is (following, suitably " extruded resin sheet " is recited as " resin plate ") the manufacture method that a mode is the extruded resin sheet being laminated with methacrylic resin layer at least one side of polycarbonate resin of manufacture method, it implements following composition.
The operation that the thermoplastic resinous laminate being laminated with methacrylic resin layer at least one side of polycarbonate resin is extruded from T-shaped die head with molten condition.
The operation of above-mentioned thermoplastic resinous laminate is sandwiched while forming slope between the first chill roll and the second chill roll.
By being wound up into, after above-mentioned thermoplastic resinous laminate being wound up on above-mentioned second chill roll, the operation carrying out cooling down on the 3rd chill roll.
Above-mentioned thermoplastic resinous laminate is utilized and deflects from the operation that roller deflects from.
And, state condition in above-mentioned each operation fullness in the epigastrium and abdomen foot.
In the position that above-mentioned thermoplastic resinous laminate peels off from above-mentioned 3rd chill roll, temperature overall for resin is set as, and the glass transition temperature of polycarbonate resin is from the scope of+5 DEG C to-40 DEG C.
Peripheral speed ratio (V3/V2) of the peripheral speed (V3) of above-mentioned 3rd chill roll Yu the peripheral speed (V2) of above-mentioned second chill roll is set as more than 1.0 and less than 1.01.
Peripheral speed ratio (V4/V2) of the above-mentioned peripheral speed (V4) and the peripheral speed (V2) of above-mentioned second chill roll deflecting from roller is set as more than 0.98 and less than 1.00.
So that the thickness of manufactured above-mentioned extruded resin sheet by thickness ratio (TC/TS) meter being orthogonal to extrude the average thickness (TS) of average thickness (TC) and each 100mm in two ends of the central 100mm of the width in direction be more than 1.0 and be less than 1.05 mode control the formation on above-mentioned slope.
Additionally; in one mode of the liquid crystal display protection board comprising the extruded resin sheet obtained by the manufacture method of above-mentioned extruded resin sheet; above-mentioned extruded resin sheet is heated at a temperature of 75 DEG C～100 DEG C 5 little constantly; after before heating; a part at least width; length of delay in face is 50～210nm, and the reduction rate of the length of delay in face before and after above-mentioned heating is less than 62%.
In addition; one mode of the liquid crystal display protection board of the present invention is the extruded resin sheet being included in and being laminated with methacrylic resin layer at least one side of polycarbonate resin; above-mentioned extruded resin sheet is heated at a temperature of 75 DEG C～100 DEG C 5 little constantly; after before heating; a part at least width; length of delay in face is 50～210nm, and the reduction rate of the length of delay in face before and after above-mentioned heating is less than 62%.
Additionally, a mode of the extruded resin sheet obtained by a mode of the manufacture method of above-mentioned extruded resin sheet or above-mentioned liquid crystal display protection board further preferably has following characteristics.
Before and after above-mentioned heating, in a part at least width, the length of delay in face is preferably 80～180nm.
The reduction rate of the length of delay in face before and after above-mentioned heating is preferably smaller than 30%.
Preferably at least one face of above-mentioned extruded resin sheet, form curing overlay film and obtain.
Invention effect
The resin plate obtained by an optimal way of the manufacture method of the extruded resin sheet of the present invention has the length of delay in suitable face as liquid crystal display protection board when recognizing through polarized sunglasses.It addition, the ratio that the length of delay in its face reduces due to heating is little, therefore, it is possible to tolerance heating process, hot environment, productivity ratio, excellent durability.
Accompanying drawing explanation
Fig. 1 is the figure of the manufacture method of the resin plate utilizing coextrusion representing an embodiment of the invention.
Detailed description of the invention
Hereinafter, with reference to accompanying drawing, embodiments of the present invention are illustrated.In order to clearly state, following record and accompanying drawing are suitably omitted and have been simplified.In the accompanying drawings, to having the element of identical composition or function and the label that appropriate section mark is identical, and the description thereof will be omitted.
Embodiment 1
The resin plate of the present invention is stacking methacrylic resin layer at least one face of polycarbonate resin.
By being laminated with methacrylic resin layer on polycarbonate resin, the transparency of plate, resistance to impact, excellent abrasion.
Resin plate utilizes extrusion molding method to manufacture, and thus production efficiency is excellent.
In an embodiment of the invention, the methacrylic resin constituting methacrylic resin layer contains the construction unit deriving from methacrylate.
The content of the construction unit deriving from methacrylate is preferably more than 50 mass %, more than more preferably 80 mass %, is even more preferably more than 90 mass %.Can be 100 mass %.Derive from methacrylate construction unit content within the above range in the case of, the transparency is good.
As methacrylate, such as methyl methacrylate, ethyl methacrylate, butyl methacrylate, cyclohexyl methacrylate, phenyl methacrylate, benzyl methacrylate, 2-Ethylhexyl Methacrylate, 2-hydroxyethyl methacrylate etc. can be enumerated.Wherein, from the viewpoint of the transparency, preferably comprise the methyl methacrylate of more than 50 mass %.
Furthermore it is possible to be with can be with the copolymer of the monomer of methyl methacrylate copolymer.As can be with the monomer of methyl methacrylate copolymer, it is also possible to enumerate the methyl acrylic ester beyond methyl methacrylate.As this methyl acrylic ester, such as ethyl methacrylate, butyl methacrylate, phenyl methacrylate, benzyl methacrylate, 2-Ethylhexyl Methacrylate, 2-hydroxyethyl methacrylate etc. can be enumerated.Furthermore it is possible to enumerate: the methacrylic acid such as cyclohexyl methacrylate, methacrylic acid ring pentyl ester, methacrylic acid ring butyl ester monocyclic aliphatic race hydrocarbon ester；Methacrylic acid 2-norborneol ester, methacrylic acid 2-methyl-2-norborneol ester, methacrylic acid 2-ethyl-2-norborneol ester, methacrylic acid 2-isobornyl thiocyanoacetate, methacrylic acid 2-methyl-2-isobornyl thiocyanoacetate, methacrylic acid 2-ethyl-2-isobornyl thiocyanoacetate, methacrylic acid 8-tri-ring [5.2.1.02,6] last of the ten Heavenly stems ester, methacrylic acid 8-methyl-8-three ring [5.2.1.02,6] last of the ten Heavenly stems ester, methacrylic acid 8-ethyl-8-three ring [5.2.1.02,6] last of the ten Heavenly stems ester, methacrylic acid 2-Buddha's warrior attendant alkyl ester, 2-Methacryloyloxy-2-methyladamantane, 2-Ethyl-2-adamantyl methacrylate., methacrylic acid 1-Buddha's warrior attendant alkyl ester, methacrylic acid 2-turnip ester, the methacrylic acid multicyclic aliphatic hydrocarbon ester such as methacrylic acid 2-methyl-2-turnip ester or methacrylic acid 2-ethyl-2-turnip ester；Deng.
Additionally, as can be with the monomer of methyl methacrylate copolymer, it is also possible to enumerate esters of acrylic acid, phenylethylene, acrylonitrile, methacrylonitrile, maleic anhydride, phenyl maleimide, the N-cyclohexylmaleimides etc. such as acrylic acid methyl ester., ethyl acrylate, butyl acrylate, cyclohexyl acrylate, phenyl acrylate, benzyl acrylate, 2-EHA, acrylic acid 2-hydroxy methacrylate.This monomer can use one, it is also possible to is applied in combination two or more.
When methacrylic resin is the copolymer of methyl methacrylate and acrylic acid methyl ester., excellent transparency.Forming about preferred monomers now, when the total of monomer is set to 100 mass %, methyl methacrylate is preferably more than 80 mass %, more than more preferably 85 mass %, is even more preferably more than 90 mass %.Methyl methacrylate can be 100 mass %.
The methacrylic resin used in an embodiment of the invention, the melt flow rate (MFR) (MVR) measured according to ISO-1133 is preferably 0.5～20 (cm3/ 10 minutes, 230 DEG C, 37.3N).MVR within the range time, having good stability of extrusion molding.
In the methacrylic resin used in an embodiment of the invention, in order to improve resistance to impact, light resistance etc., known additive can be contained.As additive, antioxidant, heat deterioration preventing agent, UV absorbent, light stabilizer, lubricant, releasing agent, polymer processing aid, antistatic agent, fire retardant, dyes/pigments, light diffusing agent, organic pigment, delustering agent, resistance to impact modification agent, fluorophor etc. can be enumerated.
The polycarbonate resin used in an embodiment of the invention is not particularly limited, and the melt flow rate (MFR) (MVR) measured according to ISO-1133 is preferably 1～20 (cm3/ 10 minutes, 300 DEG C, 11.8N).MVR within the range time, having good stability of extrusion molding.
In the polycarbonate resin used in an embodiment of the invention, in order to improve light resistance etc., known additive can be contained.As additive, antioxidant, heat deterioration preventing agent, UV absorbent, light stabilizer, lubricant, releasing agent, polymer processing aid, antistatic agent, fire retardant, dyes/pigments, light diffusing agent, organic pigment, delustering agent, resistance to impact modification agent, fluorophor etc. can be enumerated.
Resin plate in an embodiment of the invention is at the two sides stacking methacrylic resin layer of polycarbonate resin, thus, from the viewpoint of excellent abrasion be difficult to because humidity change be preferred from the viewpoint of there is warpage.
The thickness of the resin plate in an embodiment of the invention is preferably 0.4～2mm, more preferably 0.5～1.5mm.When crossing thin, there is the tendency that rigidity becomes insufficient.Time blocked up, there is the light-weighted tendency that can hinder liquid crystal indicator etc..
The thickness of the methacrylic resin layer of the resin plate in an embodiment of the invention is preferably 20～200 μm.When this scope, marresistance is excellent with the balance of resistance to impact.More preferably 25～150 μm, more preferably 30～100 μm.
By in the resin substrate that an embodiment of the invention obtains, curing overlay film can be set on its at least one face.By arranging curing overlay film, it is possible to give the function such as marresistance, low reflexive.
Such as, the thickness of marresistance (painting property firmly) curing overlay film is preferably 2～30 μm, more preferably 3～10 μm.When crossing thin, case hardness becomes insufficient, time blocked up, may crack due to the bending in manufacturing process.
It addition, such as, the thickness of low reflexive curing overlay film is preferably 80～200nm, more preferably 100～150nm.This is because, mistake is the thinnest or blocked up all can make low reflecting properties become insufficient.
Resin plate in an embodiment of the invention out can be manufactured by co-extrusion.Polycarbonate resin and methacrylic resin are added heat fusing, from the discharge opening extrusion of the wide cut shape being referred to as T-shaped die head, utilizes the pair of rolls being made up of the first chill roll and the second chill roll clamping to be formed as lamellar.Then, after further resin plate being wound up on the second chill roll, it is wound up into the 3rd chill roll, thus cools down.It addition, sometimes resin plate is cooled down further with more chill roll after this.In Fig. 1, as an embodiment, it is shown that utilize by T-shaped die head the 11, first to the 3rd chill roll 12～14 and deflect from the summary of manufacture method of resin plate of the co-extrusion device that roller 15 is constituted.Utilize the pair of rolls clamping being made up of the first chill roll 12 and the second chill roll 13 from the resin of T-shaped die head 11 extrusion, be formed as the resin plate 16 of lamellar.Then, utilize the 3rd chill roll 14 to cool down resin plate 16 further, utilize the roller 15 that deflects from being made up of pair of rolls to deflect from.It should be noted that the invention is not restricted to the method.
T-shaped die head 11 can use single manifold-type, both manifold types, from the viewpoint of the thickness and precision of each layer is excellent, and preferably manifold type.
As chill roll, it is possible to use metal rigid body roller, both metallic elastic rollers.
When the reduction rate of the length of delay in the resin plate (extruded resin sheet) of an embodiment of the invention face when heating is less than 62%, especially less than 30%, if exposed to hankering, it also is able to be held in length of delay required degree, therefore, it is resistant to the heating process in manufacturing and also is able to tolerate the use environment reached a high temperature, the most preferably.During it addition, be less than 30%, the tendency that the deviation of the reduction rate that there is length of delay reduces, the most preferably.In other words, during less than 30%, the amplitude of the rate of change of length of delay is little, and therefore, the deviation of the absolute value after change reduces.Therefore, length of delay becomes uniform in resin plate, it is possible to expect good goods.The reduction rate of length of delay is the least, then the deterioration in manufacturing procedure, use environment is the fewest, is excellent accordingly, as products formed.
Postpone to refer to the light in molecular backbone direction and the phase difference of the light in the direction being perpendicular to main chain.Known macromolecule typically can obtain arbitrary shape by thermoforming, but produces certain stress in its heating, cooling procedure, and molecule carries out being orientated and producing delay.Therefore, in order to suppress to postpone, need to control the orientation of molecule.The stress when orientation of molecule such as utilizes the shaping near high molecular glass transition temperature and produce.
The inventors discovered that following method: control the orientation of molecule by manufacturing condition being carried out various adjustment during extrusion molding, thus prevent the minimizing of the length of delay added in thermally-induced face after being shaped by resin plate.Hereinafter, be divided into the impact on slope, the impact of peripheral speed ratio, the impact of thickness of resin plate, heating condition illustrate.
* about the impact on slope
Slope refers to the buildup of resin formed in the gap of the first chill roll 12 and the second chill roll 13.
And, the relation of slope amount with the length of delay in face to be evaluated, result is known, slope amount is the biggest, then the length of delay in face more increases.
Thinking that its reason is because, molten resin, when flowing to the minimum clearance of the first chill roll 12 and the second chill roll 13 from the position that there occurs buildup of resin, produces the current difference within resin, thus makes molecule be orientated along with the cooling of resin.
By improving the resin quantity delivered to roller or reducing the speed of roller, slope increases, such that it is able to be adjusted.
* about the impact of peripheral speed ratio
Peripheral speed is than the arbitrary chill roll referred in addition to the second chill roll 13 and deflects from the roller ratio relative to the peripheral speed of the second chill roll 13.
And, the 3rd chill roll 14 to be evaluated than the relation with the length of delay in face relative to the peripheral speed of the second chill roll 13, result is known, its peripheral speed ratio is the biggest, then the length of delay in face more increases.
Think that its reason is because, in the case of near the glass transition temperature that resin temperature is Merlon when resin and the 3rd chill roll 14 contact, when the peripheral speed of the 3rd chill roll 14 applies big tensile stress than becoming big to resin plate, the molecule of resin is orientated.
Then, being evaluated than the relation with the length of delay in face relative to the peripheral speed of the second chill roll 13 deflecting from roller 15, result is known, its peripheral speed ratio is the biggest, then the length of delay in face more increases.
Think that its reason is because, resin temperature when resin is peeled off from the 3rd chill roll 14 be than the scope of+5 DEG C to about-40 DEG C near the glass transition temperature of Merlon in the case of, when deflecting from the peripheral speed of roller 15 and apply big tensile stress than becoming big, the molecule of resin is orientated.
It addition, the temperature from the 3rd chill roll 14 stripping can be than the scope of+5 DEG C to-40 DEG C near the glass transition temperature of Merlon.Its reason is because, the too high or too low planar that all cannot obtain beauty compared with near glass transition temperature.
Then, the degree reduced the length of delay in face when being heated by extruded resin sheet is studied.
In the case of peripheral speed is than slowly increasing slope amount under conditions of constant, it is known that the length of delay in face slowly increases, but the reduction rate of the length of delay in the face after heating slowly reduces.
In the case of slowly increasing the peripheral speed ratio of the second chill roll 13 and the 3rd chill roll 14 under conditions of slope amount is constant, it is known that the length of delay in face slowly increases, and the reduction amount of the length of delay in face during heating the most slowly increases.
It addition, under conditions of slope is measured in the case of the slow peripheral speed ratio increasing the second chill roll 13 and deflect from roller 15, it is known that the length of delay in face the most slowly increases, but the reduction rate of the length of delay in the face after heating becomes very large.
It follows that for the purpose reaching the application, the peripheral speed ratio reducing the second chill roll 13 with deflecting from roller 15, adjust the peripheral speed ratio of slope amount and the second chill roll 13 and the 3rd chill roll 14 and the length of delay in chain of command.
Specifically, the peripheral speed of the second chill roll is set to V2, time the peripheral speed of the 3rd chill roll is set to V3, the peripheral speed deflecting from roller is set to V4, such as, peripheral speed ratio (V3/V2) of the 3rd chill roll and the second chill roll is set as more than 1.0 and less than 1.01, peripheral speed ratio (V4/V2) deflecting from roller and the second chill roll is set as more than 0.98 and less than 1.00.
It should be noted that, the peripheral speed ratio of the second chill roll 13 and the 3rd chill roll 14 is during more than 1.01, there is the tendency (with reference to comparative example 3 described later) more than 210nm of the length of delay in face, during less than 1.0, there is the tendency (with reference to comparative example 2 described later) less than 50nm of the length of delay in face.From obtaining in preferred face from the viewpoint of length of delay, in the case of slope amount is little, second chill roll 13 and the peripheral speed ratio more preferably 1.002～1.010 of the 3rd chill roll 14, particularly preferably 1.005～1.007 (with reference to embodiments 7 described later), in the case of slope amount is big, peripheral speed ratio preferably 1.000～1.003, particularly preferably 1.001～1.003.
Additionally, second chill roll 13 with deflect from the peripheral speed ratio of roller 15 during more than 1.00, the reduction rate of the length of delay in face after heating becomes very large (with reference to comparative example 1 described later), during less than 0.98, the tension force of resin plate is not enough, the resin plate contacted with the 3rd chill roll is unable to maintain that closed state is peeled off from roller, it is impossible to keep beautiful planar.
Then, on using metal rigid body roller or metallic elastic roller to be evaluated as the impact brought to the length of delay in face during the second chill roll 13, result is known, in the case of using metallic elastic roller, the length of delay in face is less.Thinking that its reason is because, for metallic elastic roller, the situation generally reducing slope amount is more, and the molecularly oriented shaped based on slope is little.Thus, it can be known that in order to utilize metallic elastic roller to control the delay in suitable face, need to adjust the second chill roll 13 and the peripheral speed ratio of the 3rd chill roll 14.
* about the impact of thickness
The THICKNESS CONTROL of the width orthogonal with extrusion direction in extrusion molding generally can be controlled with the gap of the second chill roll 13, the adjoint extrusion capacity of resin quantity delivered, the peripheral speed of the second chill roll, slope amount by the first chill roll 12.
Here, generally slope amount is the biggest, then increasing to the squeeze pressure of the first chill roll 12 and the second chill roll 13, chill roll is squeezed curved.Therefore, along with the increase of slope amount, the thickness distribution of the width orthogonal with flow direction becomes drum type, and central authorities are neighbouring thickening and both ends are thinning.
As the method that the thickness distribution making width is smooth, there is the slope amount method more than the slope amount near central authorities at the two ends making width.In this case, the length of delay at the both ends of width increases.
Therefore, in order to control to be appropriate value by the deviation of the length of delay of width and the reduction rate of length of delay, need the thickness distribution of width is optimized.
It can thus be appreciated that, in order to reach the purpose of the application, need to be set greater than 1.0 with thickness ratio (TC/TS) of the average thickness (TC) near the average thickness (TS) and central authorities at the two ends in the effective range of the orthogonal width in extrusion direction and be less than 1.05.Average thickness (TC) near central authorities calculates at the central 100mm of the width orthogonal with extrusion direction of resin plate 16, and the average thickness (TS) at two ends calculates with the average thickness (adding up to the average thickness of 200mm) of each 100mm in two ends of the width orthogonal with extrusion direction.
More specifically, a part for the width of resin plate, the length of delay at the position selected by mensuration are selected.Then, heat at a temperature of any one in 75 DEG C～100 DEG C of selected position, measure the length of delay after heating.
Here, width is the direction that the direction carried in extrusion device with resin plate is orthogonal, a part for width refers to the region of the random length of the width comprising resin plate.
To the result being measured with the position of such procedure Selection it is, the length of delay in face before and after heating be 50～210nm and heat before and after face in length of delay reduction rate less than 62% time, obtained resin plate can realize the effect of the application, the most preferably.
During it should be noted that thickness ratio (TC/TS) is more than 1.05, slope quantitative change is too much, therefore, sometimes cannot stably manufacture, when thickness ratio (TC/TS) is less than 1.0, slope quantitative change obtains very few, and therefore, the length of delay in face obtains little value.
It should be noted that slope amount is adjusted and by being visually evaluated by changing resin quantity delivered.
Because it is found that the impact of thickness as above, therefore, in the manufacturing process of extruded resin sheet, by make the thickness of the extruded resin sheet of manufacture than reach more than 1.00 and be less than 1.05 numerical range in the way of control the formation (slope amount) on slope.When the control of thickness is insufficient, the such as end at the width of extruded resin sheet forms the region of length of delay deviation target value scope, may produce the situation being not suitable as goods.Therefore, in order to stably manufacture good goods, it is also preferred that control the thickness of resin plate.
During it should be noted that the length of delay in the face of liquid crystal display protection board is more than 210nm, in the case of through polarizing filter viewings such as polarized sunglasses, it is seen that the transmission rate variance of each wavelength of optical range becomes big, accordingly, it is difficult to recognize various color.On the other hand, when the length of delay in the face of liquid crystal display protection board is less than 50nm, it is seen that the full Thewavelengthtransmittance of optical range is greatly reduced, and becomes pitch-dark image, it is impossible to identification.Time in the range of 50nm～210nm, it is the brightest to be worth the biggest then image, and value is the least, and color more alleviates.Particularly, when the length of delay in face is set as 80nm～180nm, brightness is good with the balance of color, and identification is excellent, is more preferably set as the situation of 100nm～150nm.
* about heating condition
About the heating condition in the present invention, it is set as 75 DEG C～the scope of 100 DEG C, but in the case of being measured, uses 75 DEG C, 5 hours and 100 DEG C, one in 5 hours.Above-mentioned heating environment with reference to the acid extraction during common formation curing overlay film, is preferably able to tolerate this heating environment and maintain delay.
Specifically, by within 5 hours, being measured in test film is put into the autoclave that management is 100 DEG C ± 3 DEG C or 75 DEG C ± 3 DEG C.
As discussed above, in the manufacture method of above-mentioned extruded resin sheet, preferably it is controlled in the way of making the extruded resin sheet of manufacture have following characteristic.
Extruded resin sheet controls manufacturing process the most as follows: extruded resin sheet is heated at a temperature of 75 DEG C～100 DEG C 5 little constantly, after before heating, in a part at least width, the length of delay in face is 50～210nm, and the reduction rate of the length of delay in face before and after heating is less than 62%.
Control manufacturing process the most as follows: extruded resin sheet before heating after, in a part at least width, the length of delay in face is 80～180nm.
Manufacturing process is controlled in the way of preferably the reduction rate of the length of delay in the face after making extruded resin sheet before heating is less than 30%.
Embodiment
Below, it is shown that embodiment comes in more detail that the present invention will be described.But, the present invention is not by any restriction of described embodiment.
Resin and the physical property of resin plate is measured by following method.
[MVR]
Use melt indexer (" TAKARAL241-153 ", Co., Ltd. テ Network ノ セ Block Application manufactures), be measured according to ISO-1133.
[methacrylic resin]
Prepare " パ ラ ペ ッ ト (registered trade mark) HR " (MVR:2.0cm that Kuraray Co., Ltd. manufactures3/ 10 minutes) as methacrylic resin.
[polycarbonate resin]
Prepare firmly to change " SD Port リ カ (registered trade mark) PCX " (MVR:8cm that ス タ イ ロ Application Port リ カ ボ ネ ト Co., Ltd. manufactures3/ 10 minutes, glass transition temperature: 151 DEG C) as polycarbonate resin.
[heating condition]
Test film reciprocating sow is cut off, makes the square test film of 100mm.About heating, test film is put in the autoclave that management is 100 DEG C ± 3 DEG C 5 hours.
[mensuration of length of delay]
Test film reciprocating sow is cut off, makes the square test film of 100mm.About length of delay, being placed more than 10 minutes by test film in the environment of 25 DEG C ± 3 DEG C, the WPA-100 (-L) utilizing Co., Ltd. Off ォ ト ニ ッ Network ラ テ ィ ス to manufacture is measured.About locating, it is measured near the central authorities of test film.
[visual valuation method when polarized sunglasses is worn]
Test film reciprocating sow is cut off, makes the square test film of 100mm.
Then, image is shown at the position configuration liquid crystal indicator of distance eyes 35cm.Then, by the test film before the heating of embodiment and comparative example between liquid crystal indicator and eyes, the picture of position and the display device of distance eyes 30cm configures abreast.
First, not wearing polarized sunglasses, the thickness direction of permeability test sheet carries out visualization to image.
Then, wear polarized sunglasses, when making face towards image, head is tilted to the left and right, as described above image is carried out visualization.
Then, the test film before heating is changed into the test film after heating, in addition, as described above to not wearing the situation of polarized sunglasses and wearing the situation visualization image of polarized sunglasses.
Zero: the outward appearance of image occurs notable change not according to wearing with or without of polarized sunglasses, it is possible to no problem ground recognition graph picture.
×: compared with the situation not wearing polarized sunglasses, the outward appearance of image, in the case of wearing polarized sunglasses, becomes dark reflection or observes deep coloring and be difficult to see that image when being tilted to certain angle by head.
[embodiment 1]
(manufacture method of resin plate)
Methacrylic resin utilize 150mm φ single screw extrusion machine [Toshiba Machinery Co., Ltd.'s manufacture] melt, polycarbonate resin utilizes 150mm φ single screw extrusion machine [Toshiba Machinery Co., Ltd.'s manufacture] melt, both are carried out stacking across manifold pattern type.The resin (resin plate 16) of stacking is clamped into the first chill roll 12 and the second chill roll 13 shown in Fig. 1, manufactures.Here, the first chill roll the 12, second chill roll 13 and the 3rd chill roll 14 all metal rigidity roller.It addition, so that the mode that average thickness (TC) near central authorities reaches 1mm thickness forms, cools down.It addition, be held in the state that slope amount is big, peripheral speed ratio (V3/V2) of the second chill roll 13 and the 3rd chill roll 14 adjusted to 1.000, the second chill roll 13 and peripheral speed ratio (V4/V2) deflecting from roller 15 are adjusted to 0.99.It addition, in the position peeled off from the 3rd chill roll 14, utilize infrared emission thermometer to measure the temperature of resin plate 16 entirety, result is 130 DEG C.The evaluation result of manufacturing condition and obtained resin plate is shown in Table 1.
[embodiment 2～9]
In addition to the kind of the second chill roll, slope amount, the second chill roll 13 and peripheral speed ratio (V3/V2) of the 3rd chill roll 14, the second chill roll 13 being changed according to table 1 with peripheral speed ratio (V4/V2) deflecting from roller 15, manufacture resin plate similarly to Example 1.The evaluation result of obtained resin plate is shown in Table 1.
[comparative example 1～4]
In addition to the kind of the second chill roll, slope amount, the second chill roll 13 and peripheral speed ratio (V3/V2) of the 3rd chill roll 14, the second chill roll 13 being changed according to table 1 with peripheral speed ratio (V4/V2) deflecting from roller 15, manufacture resin plate similarly to Example 1.The evaluation result of obtained resin plate is shown in Table 1.
[reference example 1]
Reduce in addition to slope is measured, manufacture resin plate similarly to Example 1.The evaluation result of obtained resin plate is shown in Table 1.
From embodiment and the comparison of comparative example of table 1, by forming slope, making thickness ratio (TC/TS) more than 1.0 and is less than 1.05.
In addition we know, meet thickness ratio (TC/TS) more than 1.0 and be less than 1.05, peripheral speed ratio (V3/V2) be more than 1.0 and less than 1.01, peripheral speed ratio (V4/V2) be more than 0.98 and less than 1.00 time, length of delay resin plate in the range of 50～210nm can be obtained, even and if after this resin plate is heated 5 hours at 100 DEG C, length of delay is also in the range of 50～210nm, and its reduction rate before and after above-mentioned heating is also within 30%.Thus, even if when wearing polarized sunglasses, the identification of image when observing through obtained resin plate is the most excellent, and this is the most applicable before and after the heating of this resin plate.
It should be noted that in the case of reference example 1, do not have sloping formation, peripheral speed ratio (V3/V2 and V4/V2) is the least, therefore cannot give delay, but the reduction rate postponed is suppressed to low value.
Industrial applicability
The resin plate of the present invention can be used in such as liquid crystal display protection board, is suitable for on-vehicle display, portable phone, smart mobile phone, PC, television set etc..
It should be noted that the invention is not restricted to above-mentioned embodiment, suitably can change without departing from the range of purport.
This application claims the priority based on Japanese publication Patent 2013-262127 of December in 2013 proposition on the 19th, its entire disclosure is incorporated in this specification.
Label declaration
11T pattern head
12 first chill rolls
13 second chill rolls
14 the 3rd chill rolls
15 deflect from roller
16 resin plates
Claims (7)
1. a manufacture method for extruded resin sheet, it is the manufacture method of the extruded resin sheet being laminated with methacrylic resin layer at least one side of polycarbonate resin, wherein,
Including following operation:
The thermoplastic resinous laminate being laminated with methacrylic resin layer at least one side of polycarbonate resin is extruded from T-shaped die head with molten condition,
Described thermoplastic resinous laminate is sandwiched while forming slope between the first chill roll and the second chill roll,
Cool down by being wound up on the 3rd chill roll after described thermoplastic resinous laminate being wound up on described second chill roll,
Described thermoplastic resinous laminate utilization is deflected from roller deflect from；
Further, in the position that described thermoplastic resinous laminate peels off from described 3rd chill roll, temperature overall for resin is set as the glass transition temperature relative to polycarbonate resin from the scope of+5 DEG C to-40 DEG C,
Peripheral speed ratio (V3/V2) of the peripheral speed (V3) of described 3rd chill roll Yu the peripheral speed (V2) of described second chill roll is set as more than 1.0 and less than 1.01,
Peripheral speed ratio (V4/V2) of the described peripheral speed (V4) and the peripheral speed (V2) of described second chill roll deflecting from roller is set as more than 0.98 and less than 1.00,
So that the thickness of manufactured described extruded resin sheet by thickness ratio (TC/TS) meter being orthogonal to extrude the average thickness (TS) of average thickness (TC) and each 100mm in two ends of the central 100mm of the width in direction be more than 1.0 and be less than 1.05 mode control the formation on described slope.
2. a liquid crystal display protection board, it comprises the extruded resin sheet obtained by the manufacture method of the extruded resin sheet described in claim 1,
Described extruded resin sheet is heated at 75 DEG C 5 little constantly, before heating after, in a part at least width, the length of delay in face is 50～210nm, the reduction rate of the length of delay in face before and after described heating be less than 62%.
3. a liquid crystal display protection board, it comprises the extruded resin sheet obtained by the manufacture method of the extruded resin sheet described in claim 1,
Described extruded resin sheet is heated at 100 DEG C 5 little constantly, before heating after, in a part at least width, the length of delay in face is 50～210nm, the reduction rate of the length of delay in face before and after described heating be less than 62%.
4. a liquid crystal display protection board, it is included in the extruded resin sheet being laminated with methacrylic resin layer at least one side of polycarbonate resin,
Described extruded resin sheet is heated at a temperature of 75 DEG C～100 DEG C 5 little constantly, before heating after, in a part at least width, the length of delay in face is 50～210nm, the reduction rate of the length of delay in face before and after described heating be less than 62%.
5. the liquid crystal display protection board as according to any one of claim 2～4, wherein, before and after described heating, in a part at least width, the length of delay in face is 80～180nm.
6. the liquid crystal display protection board as according to any one of claim 2～5, wherein, the reduction rate of the length of delay in face before and after described heating is less than 30%.
7. the liquid crystal display protection board as according to any one of claim 2～6, it forms curing overlay film at least one face of described extruded resin sheet and obtains.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-262127 | 2013-12-19 | ||
| JP2013262127 | 2013-12-19 | ||
| PCT/JP2014/006243 WO2015093037A1 (en) | 2013-12-19 | 2014-12-16 | Method for producing resin plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105829062A true CN105829062A (en) | 2016-08-03 |
| CN105829062B CN105829062B (en) | 2017-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201480069171.8A Active CN105829062B (en) | 2013-12-19 | 2014-12-16 | The manufacture method of resin plate |
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| Country | Link |
|---|---|
| JP (1) | JP6266021B2 (en) |
| KR (1) | KR102258868B1 (en) |
| CN (1) | CN105829062B (en) |
| TW (1) | TWI658918B (en) |
| WO (1) | WO2015093037A1 (en) |
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| CN109283738A (en) * | 2018-04-28 | 2019-01-29 | 惠州市德赛西威汽车电子股份有限公司 | A kind of backlight package assembly of vehicle-carrying display screen |
| CN109562553A (en) * | 2016-08-12 | 2019-04-02 | 株式会社可乐丽 | The manufacturing method and extruded resin sheet of extruded resin sheet |
| CN110944841A (en) * | 2017-07-28 | 2020-03-31 | 株式会社可乐丽 | Laminated extruded resin sheet and protective sheet for liquid crystal display with infrared sensor |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102365231B1 (en) * | 2014-09-08 | 2022-02-18 | 주식회사 쿠라레 | Method for manufacturing liquid crystal display protection plate |
| TWI729089B (en) * | 2016-03-23 | 2021-06-01 | 日商可樂麗股份有限公司 | Manufacturing method of extruded resin board and extruded resin board |
| JP6997771B2 (en) * | 2017-04-28 | 2022-02-04 | 株式会社クラレ | Extruded resin plate and its manufacturing method |
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Also Published As
| Publication number | Publication date |
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| JP6266021B2 (en) | 2018-01-24 |
| WO2015093037A1 (en) | 2015-06-25 |
| KR20170009810A (en) | 2017-01-25 |
| CN105829062B (en) | 2017-09-19 |
| JPWO2015093037A1 (en) | 2017-03-16 |
| TW201536525A (en) | 2015-10-01 |
| KR102258868B1 (en) | 2021-05-31 |
| TWI658918B (en) | 2019-05-11 |
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