CN115097561A - High-temperature-resistant iodine polarizer and production process thereof - Google Patents
High-temperature-resistant iodine polarizer and production process thereof Download PDFInfo
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- CN115097561A CN115097561A CN202210685333.7A CN202210685333A CN115097561A CN 115097561 A CN115097561 A CN 115097561A CN 202210685333 A CN202210685333 A CN 202210685333A CN 115097561 A CN115097561 A CN 115097561A
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- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 229910052740 iodine Inorganic materials 0.000 title claims abstract description 66
- 239000011630 iodine Substances 0.000 title claims abstract description 66
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 230000010287 polarization Effects 0.000 claims abstract description 45
- 238000001035 drying Methods 0.000 claims description 41
- 230000001681 protective effect Effects 0.000 claims description 40
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 38
- 239000003292 glue Substances 0.000 claims description 37
- 230000000694 effects Effects 0.000 claims description 32
- 238000005406 washing Methods 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 27
- 239000000047 product Substances 0.000 claims description 25
- 230000001070 adhesive effect Effects 0.000 claims description 24
- 239000000853 adhesive Substances 0.000 claims description 23
- 239000011265 semifinished product Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 230000008961 swelling Effects 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- 239000000654 additive Substances 0.000 claims description 9
- 239000007888 film coating Substances 0.000 claims description 9
- 238000009501 film coating Methods 0.000 claims description 9
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 claims description 9
- 238000010030 laminating Methods 0.000 claims description 8
- 238000010023 transfer printing Methods 0.000 claims description 8
- 238000004043 dyeing Methods 0.000 claims description 7
- 238000007667 floating Methods 0.000 claims description 7
- -1 iodide ions Chemical class 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 88
- 229920002451 polyvinyl alcohol Polymers 0.000 description 88
- 229920002284 Cellulose triacetate Polymers 0.000 description 56
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 56
- 230000000052 comparative effect Effects 0.000 description 9
- 238000012986 modification Methods 0.000 description 9
- 230000004048 modification Effects 0.000 description 9
- 238000012545 processing Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
- G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
- G02B5/305—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks including organic materials, e.g. polymeric layers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2401/00—Presence of cellulose
- C09J2401/006—Presence of cellulose in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2429/00—Presence of polyvinyl alcohol
- C09J2429/006—Presence of polyvinyl alcohol in the substrate
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Polarising Elements (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention discloses a high-temperature-resistant iodine polarizer and a production process thereof, and the polarizer adhered with a TAC film integrates the advantages of a universal iodine polarizer and a dye polarizer by matching a proper stretching ratio, specific temperature conditions in each treatment tank and specific materials for each layer of the iodine polarizer, has the advantages of high temperature resistance, high polarization degree and high reliability, the polarization degree is higher than 99.9%, the optical change value of high temperature 95 ℃ 1000H reaches 1.8%, the optical change value of 60 ℃ 90% 1000H reaches 2.8%, and the PSA performance of high temperature 95 ℃ 1000H and 60 ℃ 90% 1000H is determined, so that the requirements of outdoor products with high requirements on working environment on the performance of the polarizer are met, the application range of the conventional iodine polarizer is expanded, and the service life of the polarizer is prolonged.
Description
Technical Field
The invention relates to a high-temperature-resistant iodine polarizer and a production process thereof.
Background
In the current polarizer industry, polarizers are generally classified into two types, i.e., universal iodine type polarizers and dye type polarizers: the polarization degree distribution of the common iodine polarizer is wider, the polarization degree is generally between 90% and 99.999%, the optical polarizer is generally applied to the liquid crystal display products with low reliability requirements of common daily consumption, and the polarizer has the characteristics of high polarization degree and high contrast, but can only be applied to dry temperature: 70-80 ℃ 240H, high temperature and high humidity: the product has wide application range in the medium and low reliability products of 40 ℃ 95% 240H or 60 ℃ 90% 240H. The polarization degree of the dye-based polarizer is generally between 60% and 99%, and the dye-based polarizer can be applied to dry temperature: 90-95 ℃ 1000H, high temperature and high humidity: under the conditions of 60 ℃ 90% 1000H and the like, the dye-based polarizer has low polarization degree, but can be applied to outdoor products (such as electric meters and vehicle-mounted products) with high requirements on working environment; the dye-based polaroid has good reliability, but the application range of the product is narrow. Therefore, a polarizer with high temperature resistance, high polarization degree and high reliability is desired, which combines the advantages of the iodine-based polarizer and the dye polarizer.
Therefore, the prior art still needs to be improved and developed.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant iodine polarizer and a production process thereof, and aims to solve one or more problems in the prior art.
The technical scheme of the invention is as follows:
the technical scheme provides a production process of a high-temperature-resistant iodine polarizer, which specifically comprises the following steps:
step S1: immersing the PVA film into a solution containing iodine, and performing oriented stretching and drying to obtain the PVA film with a polarization effect;
step S2: attaching the PVA film with the polarization effect to an outer protective film and an inner protective film through adhesive water gel, and drying to obtain a semi-finished product of the polarizer;
step S3: laminating the PSA pressure-sensitive adhesive on the inner protective film of the semi-finished product of the polaroid in a PET release film coating and transfer printing mode to obtain a finished product of the iodine-based high-durability polaroid;
wherein, the steps S1 and S2 specifically include the following processes:
s 11: washing the PVA film with water at a stretching speed of 0-0.5 m/min in a washing tank at 10-15 ℃;
s 12: the washed PVA film enters a swelling tank at the temperature of 15-20 ℃ at the stretching speed of 0-0.5 m/min for swelling;
s 13: the swelled PVA film enters a dyeing tank at 10-15 ℃ at a stretching speed of 0-0.5 m/min, and is dyed by iodide ions;
s 14: the dyed PVA film enters a washing tank at 10-15 ℃ at a stretching speed of 0.2-0.7 m/min to wash away loose color;
s 15: the PVA film after washing away the floating color enters a stretching first tank at the temperature of 15-20 ℃ at the stretching speed of 0.5-1 m/min for accelerated stretching;
s 16: the PVA film stretched in the first stretching groove enters a second stretching groove at the temperature of 15-20 ℃ at the stretching speed of 0.5-1 m/min for accelerated stretching;
s 17: the stretched PVA film enters a color compensation groove at the temperature of 0-5 ℃ at the stretching speed of 1-1.5 m/min for color adjustment;
s 18: the color-supplemented PVA film enters a washing tank at the temperature of 10-15 ℃ to wash the film surface, and then is dried at the temperature of 35-40 ℃ to obtain the PVA film with the polarization effect;
s 21: and (3) adhering the dried PVA film with the polarization effect with an outer protective film and an inner protective film to form a polarizer, drying the adhered polarizer sequentially through four sections of ovens at 35-40 ℃, and cooling to obtain a semi-finished polarizer.
Further, in s11, the PVA film is washed with water at a drawing speed of 0.35m/min through a washing tank at 15 ℃; in s12, the PVA film after washing was put into a 17 ℃ swelling tank at a drawing speed of 0.38m/min and swelled.
Further, in s13, the swelled PVA film enters a dyeing tank at 15 ℃ at a drawing speed of 0.43m/min, and the PVA film is dyed by iodide ions; in s14, the dyed PVA film was fed at a drawing speed of 0.53m/min into a washing tank at 15 ℃ to wash off the floating color.
Further, in the s15, the PVA film after washing away the flooding enters a 16 ℃ stretching tank at a stretching speed of 0.76-1 m/min for accelerated stretching; and in the s16, the PVA film stretched in the first stretching groove enters a second stretching groove at the temperature of 18 ℃ at the stretching speed of 0.96-1 m/min for accelerated stretching.
Further, in the s17, the stretched PVA film enters a color compensation groove at 0 ℃ at a stretching speed of 1.26m/min for color adjustment; in s18, the color-supplemented PVA film is put into a 12 ℃ cleaning tank to clean the film surface, and then dried at 40 ℃ to obtain the PVA film with the polarization effect.
Further, in s21, the dried PVA film with the polarization effect is then bonded with the outer protective film and the inner protective film to form a polarizer, the bonded polarizer is dried sequentially through four sections of ovens at 40 ℃, and the polarizer semi-finished product is obtained after cooling.
This technical scheme still provides a high temperature resistant type iodine polaroid, adopts as above arbitrary production technology to make, by last TAC layer, PVA layer, second TAC layer and from type rete under to in proper order, first TAC layer with between the PVA layer with laminate through adhesion agent glue between the second TAC layer, the second TAC layer with be provided with the PSA layer between the type rete.
Further, the first TAC layer and the second TAC layer both adopt TAC films with the model number P905 of the German company LOFO High Tech Film GmbH.
Further, the PSA layer adopts a glue with the model number of J218 of Japanese Hokkaido; and coating the PSA layer between the second TAC layer and the release film layer, drying the high-temperature-resistant iodine polarizer sequentially by six sections of drying ovens with drying temperatures of 35 ℃, 45 ℃, 55 ℃, 75 ℃, 85 ℃, 70 ℃ and 60 ℃, and cooling to obtain a finished product.
Further, the adhesive glue is UV glue of Shantou Gaosheng adhesive company Limited which is added with a modified additive.
Through the above, the technical scheme combines the advantages of the general iodine polarizer and the dye polarizer after being attached with the TAC film by adopting the proper stretching ratio, the specific temperature conditions in each processing groove and the specific materials for each layer of the iodine polarizer, has the advantages of high temperature resistance, high polarization degree and high reliability, the polarization degree is higher than 99.9%, the optical change value of high temperature 95 ℃ 1000H reaches 1.8%, the optical change value of 60 ℃ 90% 1000H reaches 2.8%, and the PSA performance judgment of high temperature 95 ℃ 1000H and 60 ℃ 90% 1000H is excellent, meets the requirement of outdoor products with high requirements on working environment on the performance of the polarizer, widens the application range of the existing iodine polarizer, and prolongs the service life of the polarizer.
Drawings
Fig. 1 is a flow chart of steps of a production process of a high temperature resistant iodine polarizer according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, are used in the orientations and positional relationships indicated in the drawings, which are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
As shown in fig. 1, a production process of a high temperature resistant iodine polarizer specifically includes the following steps:
step S1: immersing the PVA film into a solution containing iodine, and performing oriented stretching and drying to obtain the PVA film with a polarization effect;
step S2: adhering the PVA film with the polarization effect to an outer protective film and an inner protective film through an adhesive water gel, and drying to obtain a semi-finished product of the polarizer;
step S3: laminating the PSA pressure-sensitive adhesive on the inner protective film of the semi-finished product of the polaroid in a PET release film coating and transfer printing mode to obtain a finished product of the iodine-based high-durability polaroid;
wherein, the steps S1 and S2 specifically include the following processes:
s 11: washing the PVA film with water at a stretching speed of 0-0.5 m/min in a washing tank at 10-15 ℃;
s 12: the washed PVA film enters a swelling tank at the temperature of 15-20 ℃ at the stretching speed of 0-0.5 m/min for swelling;
s 13: the swelled PVA film enters a dyeing tank at 10-15 ℃ at a stretching speed of 0-0.5 m/min, and is dyed by iodide ions;
s 14: the dyed PVA film enters a washing tank at 10-15 ℃ at a stretching speed of 0.2-0.7 m/min to wash away loose color;
s 15: the PVA film after washing away the floating color enters a stretching first tank at the temperature of 15-20 ℃ at the stretching speed of 0.5-1 m/min for accelerated stretching;
s 16: the PVA film stretched in the first stretching groove enters a second stretching groove at the temperature of 15-20 ℃ at the stretching speed of 0.5-1 m/min for accelerated stretching;
s 17: the stretched PVA film enters a color complementing groove at the temperature of 0-5 ℃ at the stretching speed of 1-1.5 m/min for color adjustment;
s 18: the color-supplemented PVA film enters a washing tank at 10-15 ℃ to wash the film surface, and then is dried at 35-40 ℃ to obtain the PVA film with the polarization effect;
s 21: and (3) adhering the dried PVA film with the polarization effect with an outer protective film and an inner protective film to form a polarizer, drying the adhered polarizer sequentially through four sections of ovens at 35-40 ℃, and cooling to obtain a semi-finished polarizer.
The high-temperature-resistant iodine polarizer obtained by the technical scheme has the advantages that the polarizer attached with the TAC film integrates the advantages of a universal iodine polarizer and a dye polarizer by matching with a proper stretching ratio and specific temperature conditions in each processing groove, has the advantages of high temperature resistance, high polarization degree and high reliability, the polarization degree is higher than 99.9%, the optical change value of high temperature 95 ℃ 1000H reaches 1.8%, the optical change value of 60 ℃ 90% 1000H reaches 2.8%, and the PSA performance judgment of high temperature 95 ℃ 1000H and 60 ℃ 90% 1000H is excellent, meets the requirement of outdoor polarizers with high requirements on working environments on performance, widens the application range of the existing iodine polarizers, and prolongs the service life of the polarizers.
In certain embodiments, the PVA film is washed in s11 with water at a draw rate of 0.35m/min through a wash tank at 15 ℃.
In some embodiments, in s12, the washed PVA film is stretched at 0.38m/min into a 17 deg.C swelling tank for swelling.
In some embodiments, in s13, the swelled PVA film enters a dyeing tank at 15 ℃ at a stretching speed of 0.43m/min, and the PVA film is dyed by iodide ions.
In some embodiments, the dyed PVA film is fed into a washing tank at 15 ℃ at a drawing speed of 0.53m/min to wash off the loose color in s 14.
In some embodiments, in s15, the PVA film after washing away the floating color enters a stretching tank at 16 ℃ for accelerated stretching at a stretching speed of 0.76-1 m/min.
In some embodiments, in s16, the PVA film after stretching in the first stretching groove enters the second stretching groove at 18 ℃ at a stretching speed of 0.96-1 m/min for accelerated stretching.
In certain embodiments, the stretched PVA film is subjected to color adjustment in s17 at a stretching speed of 1.26m/min into a color correction tank at 0 ℃.
In some embodiments, in s18, the PVA film after color compensation is put into a washing tank at 12 ℃ to wash the film surface, and then dried at 40 ℃ to obtain the PVA film with polarization effect.
In some embodiments, in s21, the dried PVA film with polarization effect is further bonded to an outer protective film and an inner protective film to form a polarizer, the bonded polarizer is sequentially dried in four ovens at 40 ℃, and a semi-finished polarizer is obtained after cooling.
The technical scheme also protects a high-temperature-resistant iodine polarizer which is prepared by the production process, and comprises a first TAC (Triacetyl Cellulose) layer 2, a PVA (Polyvinyl Alcohol) layer 3, a second TAC layer 4 and a release film layer 5 from top to bottom in sequence, wherein the first TAC layer 2 is attached to the PVA layer 3, the PVA layer 3 is attached to the second TAC layer 4 through Adhesive glue, and a PSA (Pressure Sensitive Adhesive) layer 6 is arranged between the second TAC layer 4 and the release film layer 5.
In some embodiments, the high temperature resistant iodine based polarizer further includes a protective film layer 1 disposed on the first TAC layer 2.
In some embodiments, the TAC films of type P905 from the german company LOFO High Tech Film GmbH are used as the first TAC layer 2 and the second TAC layer 4, and have uniform optical properties, good transparency, moisture and air isolation, and protection of the polarizing layer (i.e., the PVA layer 3).
In some embodiments, the PSA layer 6 is made of J218 (Soken) glue, which has good release force. And coating the PSA layer 6 between the second TAC layer 4 and the release film layer 5, drying the high-temperature-resistant iodine polarizer sequentially by six drying ovens with drying temperatures of 35 ℃, 45 ℃, 55 ℃, 75 ℃, 85 ℃, 70 ℃ and 60 ℃, and cooling to obtain a finished product.
In some specific embodiments, the adhesive glue is UV glue of a superstate adhesive limited company, Shantou, wherein different additives are added into the UV glue for modification according to actual application requirements, and the code after configuration is UV 1700.
According to the high temperature resistant iodine polarizer and the production process thereof in the technical scheme, specific examples and comparative examples are listed for comparative description:
example 1
The adhesive glue is UV glue of Shantou Gaosheng adhesive company Limited, wherein different additives are added into the UV glue for modification according to actual application requirements, and the configured code is UV 1700; the first TAC layer 2 and the second TAC layer 4 both adopt TAC films with the model number of P905 of the German company LOFO High Tech Film GmbH; the PSA layer 6 adopts a glue with the model number of J218 of the company of the national institute of Japan (Soken); coating the PSA layer 6 between the second TAC layer 4 and the release film layer 5, drying the high-temperature-resistant iodine polarizer in six drying ovens with drying temperatures of 35 ℃, 45 ℃, 55 ℃, 75 ℃, 85 ℃, 70 ℃ and 60 ℃ in sequence, and cooling to obtain a finished product; the high-temperature resistant iodine polarizer is prepared by the following steps:
step S1: immersing the PVA film into a solution containing iodine, and performing oriented stretching and drying to obtain the PVA film with a polarization effect;
step S2: attaching the PVA film with the polarization effect to an outer protective film and an inner protective film through adhesive water gel, and drying to obtain a semi-finished product of the polarizer;
step S3: laminating the PSA pressure-sensitive adhesive on the inner protective film of the semi-finished product of the polaroid in a PET release film coating and transfer printing mode to obtain a finished product of the iodine-based high-durability polaroid;
wherein, the steps S1 and S2 specifically include the following processes:
s 11: washing the PVA film with water at a stretching speed of 0.35m/min in a washing tank at 15 ℃;
s 12: the PVA film after washing enters a swelling tank with the temperature of 17 ℃ at the stretching speed of 0.38m/min for swelling;
s 13: the swelled PVA film enters a dyeing tank at 15 ℃ at a drawing speed of 0.43m/min, and is dyed by iodide ions;
s 14: the dyed PVA film enters a washing tank at 15 ℃ at a drawing speed of 0.53m/min to be washed away with loose color;
s 15: the PVA film after washing away the floating color enters a 16 ℃ stretching tank at a stretching speed of 0.76-1 m/min for accelerated stretching;
s 16: the PVA film stretched in the first stretching groove enters a second stretching groove at the temperature of 18 ℃ at the stretching speed of 0.96-1 m/min for accelerated stretching;
s 17: the stretched PVA film enters a color complementing groove at 0 ℃ at a stretching speed of 1.26m/min for color adjustment;
s 18: the PVA film after color compensation enters a 12 ℃ cleaning tank to clean the film surface, and then is dried under the condition of 40 ℃ to obtain the PVA film with the polarization effect;
s 21: and (3) bonding the dried PVA film with the polarization effect with an outer protective film and an inner protective film to form a polarizer, drying the bonded polarizer sequentially through four sections of ovens at 40 ℃, and cooling to obtain a semi-finished polarizer.
Comparative example 1:
the adhesive glue is a glue with the model number JC10 from Jv of Japan, wherein different additives are added into the JC10 glue for modification according to the actual application requirement, and the configured code is J102; the first TAC layer 2 and the second TAC layer 4 both adopt TAC films with the model number of P905 of LOFO High Tech Film GmbH of Germany company; the PSA layer 6 was made of a glue of type J213 from Soken corporation; the PSA layer 6 is coated between the second TAC layer 4 and the release film layer 5, and then the high-temperature-resistant iodine polarizer is dried sequentially by six drying ovens with drying temperatures of 20 ℃, 40 ℃, 60 ℃, 80 ℃, 70 ℃, 60 ℃ and 50 ℃ respectively, and then cooled to obtain a finished product; the iodine polarizer is prepared by the following steps:
immersing the PVA film into a solution containing iodine, and performing oriented stretching and drying to obtain the PVA film with a polarization effect; attaching the PVA film with the polarization effect to an outer protective film and an inner protective film through adhesive water gel, and drying to obtain a semi-finished product of the polarizer; laminating the PSA pressure-sensitive adhesive on the inner protective film of the semi-finished product of the polaroid in a PET release film coating and transfer printing mode to obtain a finished product of the iodine-based high-durability polaroid; wherein, the stretching process of the PVA film adopts the traditional stretching process and is consistent with the stretching process of a TAC (cellulose triacetate) film.
Comparative example 2:
the adhesive glue is a glue with the model number JC10 of the Japanese jv company, wherein different additives are added into the JC10 glue for modification according to the actual application requirement, and the prepared code is J105; the first TAC layer 2 and the second TAC layer 4 both adopt TAC films with the model number P905 of the German company LOFO High Tech Film GmbH; the PSA layer 6 is made of a glue with the model number J214 of the company Soken; the PSA layer 6 is coated between the second TAC layer 4 and the release film layer 5, and then the high-temperature-resistant iodine polarizer is dried sequentially by six sections of ovens with the drying temperatures of 30 ℃, 40 ℃, 50 ℃, 60 ℃, 70 ℃, 80 ℃ and 40 ℃ respectively, and then cooled to obtain a finished product; the iodine polarizer is prepared by the following steps:
immersing the PVA film into a solution containing iodine, and performing oriented stretching and drying to obtain the PVA film with a polarization effect; attaching the PVA film with the polarization effect to an outer protective film and an inner protective film through adhesive water gel, and drying to obtain a semi-finished product of the polarizer; laminating the PSA pressure-sensitive adhesive on the inner protective film of the semi-finished product of the polaroid in a PET release film coating and transfer printing mode to obtain a finished product of the iodine-based high-durability polaroid; wherein, the stretching process of the PVA film adopts the traditional stretching process and is consistent with the stretching process of a TAC (cellulose triacetate) film.
Comparative example 3:
the adhesive glue is a glue with the model number JC10 from Jv of Japan, wherein different additives are added into the JC10 glue for modification according to the actual application requirement, and the configured code is J108; the first TAC layer 2 and the second TAC layer 4 both adopt TAC films with the model number P905 of the German company LOFO High Tech Film GmbH; the PSA layer 6 is made of a glue with the model number J216 of the company Soken; the PSA layer 6 is coated between the second TAC layer 4 and the release film layer 5, and then the high-temperature-resistant iodine polarizer is dried sequentially by six sections of ovens with the drying temperatures of 30 ℃, 40 ℃, 50 ℃, 60 ℃, 70 ℃, 80 ℃ and 40 ℃ respectively, and then cooled to obtain a finished product; the iodine polarizer is prepared by the following steps:
immersing the PVA film into a solution containing iodine, and performing oriented stretching and drying to obtain the PVA film with a polarization effect; attaching the PVA film with the polarization effect to an outer protective film and an inner protective film through adhesive water gel, and drying to obtain a semi-finished product of the polarizer; laminating the PSA pressure-sensitive adhesive on the inner protective film of the semi-finished product of the polaroid in a PET release film coating and transfer printing mode to obtain a finished product of the iodine-based high-durability polaroid; wherein, the stretching process of the PVA film adopts the traditional stretching process and is consistent with the stretching process of a TAC (cellulose triacetate) film.
Comparative example 4:
the adhesive glue is Z-100 glue of Nissan Co, wherein different additives are added into the Z-100 glue for modification according to actual application requirements, and the prepared code is J111; the first TAC layer 2 and the second TAC layer 4 both adopt TAC films with the model number P905 of the German company LOFO High Tech Film GmbH; the PSA layer 6 is made of a glue with a model number J209 of the company Soken; the PSA layer 6 is coated between the second TAC layer 4 and the release film layer 5, and then the high-temperature-resistant iodine polarizer is dried sequentially by six drying ovens with drying temperatures of 20 ℃, 40 ℃, 60 ℃, 80 ℃, 100 ℃, 80 ℃ and 60 ℃ respectively, and then cooled to obtain a finished product; the iodine polarizer is prepared by the following steps:
immersing the PVA film into a solution containing iodine, and performing oriented stretching and drying to obtain the PVA film with a polarization effect; attaching the PVA film with the polarization effect to an outer protective film and an inner protective film through adhesive water gel, and drying to obtain a semi-finished product of the polarizer; laminating the PSA pressure-sensitive adhesive on the inner protective film of the semi-finished product of the polaroid in a PET release film coating and transfer printing mode to obtain a finished product of the iodine-based high-durability polaroid; wherein, the stretching process of the PVA film adopts the traditional stretching process and is consistent with the stretching process of a TAC (cellulose triacetate) film.
Comparative example 5:
the adhesive glue is UV glue of Fuding original company, wherein different additives are added into the UV glue for modification according to actual application requirements, and the prepared code is UV 1650; the first TAC layer 2 and the second TAC layer 4 both adopt TAC films with the model number of P905 of LOFO High Tech Film GmbH of Germany company; the PSA layer 6 is made of a glue having a model number J223 of Soken corporation; the PSA layer 6 is coated between the second TAC layer 4 and the release film layer 5, and then the high-temperature-resistant iodine polarizer is dried sequentially by six sections of ovens with the drying temperatures of 35 ℃, 55 ℃, 60 ℃, 75 ℃, 100 ℃, 80 ℃ and 60 ℃ respectively, and then cooled to obtain a finished product; the iodine polarizer is prepared by the following steps:
immersing the PVA film into a solution containing iodine, and performing oriented stretching and drying to obtain the PVA film with a polarization effect; attaching the PVA film with the polarization effect to an outer protective film and an inner protective film through adhesive water gel, and drying to obtain a semi-finished product of the polarizer; adhering PSA pressure-sensitive adhesive to the inner layer protective film of the semi-finished product of the polaroid in a PET release film coating and transfer mode to obtain a finished product of the iodine-based high-durability polaroid; wherein, the stretching process of the PVA film adopts the traditional stretching process and is consistent with the stretching process of a TAC (cellulose triacetate) film.
The high temperature resistant type iodine-based polarizer prepared in example 1 was optically and viewing angle-compared with the iodine-based polarizers prepared in comparative examples 1 to 5, and the comparison results are shown in table 1:
table 1 optical and viewing angle comparisons of iodine based polarizers of example 1, comparative examples 1 to 5
As can be seen from table 1, the reliability test of the high temperature resistant iodine polarizer obtained by the production process of the technical scheme and the specific materials selected for each layer of the iodine polarizer is the best compared with the iodine polarizer prepared by the conventional process and other materials, and the method integrates the advantages of the universal iodine polarizer and the dye polarizer, has the advantages of high temperature resistance, high polarization degree and high reliability, and increases the application range of the obtained high temperature resistant iodine polarizer.
In the description of the present specification, reference to the description of "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A production process of a high-temperature-resistant iodine polarizer is characterized by comprising the following steps:
step S1: immersing the PVA film into a solution containing iodine, and performing oriented stretching and drying to obtain the PVA film with a polarization effect;
step S2: adhering the PVA film with the polarization effect to an outer protective film and an inner protective film through an adhesive water gel, and drying to obtain a semi-finished product of the polarizer;
step S3: laminating the PSA pressure-sensitive adhesive on the inner protective film of the semi-finished product of the polaroid in a PET release film coating and transfer printing mode to obtain a finished product of the iodine-based high-durability polaroid;
wherein, the steps S1 and S2 specifically include the following processes:
s 11: washing the PVA film with water at a stretching speed of 0-0.5 m/min in a washing tank at 10-15 ℃;
s 12: the washed PVA film enters a swelling tank at the temperature of 15-20 ℃ at the stretching speed of 0-0.5 m/min for swelling;
s 13: the swelled PVA film enters a dyeing tank at 10-15 ℃ at a stretching speed of 0-0.5 m/min, and is dyed by iodide ions;
s 14: the dyed PVA film enters a washing tank at 10-15 ℃ at a stretching speed of 0.2-0.7 m/min to wash away loose color;
s 15: the PVA film after washing away the floating color enters a stretching first tank at the temperature of 15-20 ℃ at the stretching speed of 0.5-1 m/min for accelerated stretching;
s 16: the PVA film stretched in the first stretching groove enters a second stretching groove at the temperature of 15-20 ℃ at the stretching speed of 0.5-1 m/min for accelerated stretching;
s 17: the stretched PVA film enters a color compensation groove at the temperature of 0-5 ℃ at the stretching speed of 1-1.5 m/min for color adjustment;
s 18: the color-supplemented PVA film enters a washing tank at 10-15 ℃ to wash the film surface, and then is dried at 35-40 ℃ to obtain the PVA film with the polarization effect;
s 21: and (3) adhering the dried PVA film with the polarization effect with an outer protective film and an inner protective film to form a polarizer, drying the adhered polarizer sequentially through four sections of ovens at 35-40 ℃, and cooling to obtain a semi-finished polarizer.
2. The process for producing a high temperature resistant iodine-based polarizer according to claim 1, wherein in s11, the PVA film is washed with water at a stretching speed of 0.35m/min in a washing bath at 15 ℃; in s12, the PVA film after washing was put into a swelling tank at 17 ℃ at a draw speed of 0.38m/min and swollen.
3. The process for producing a high temperature resistant iodine-based polarizer according to claim 1, wherein in s13, the swollen PVA film is fed into a dyeing bath at 15 ℃ at a drawing speed of 0.43m/min, and the PVA film is dyed by iodide ions; in s14, the dyed PVA film was fed at a drawing speed of 0.53m/min into a washing tank at 15 ℃ to wash off the color.
4. The process for producing a high temperature resistant iodine polarizer according to claim 1, wherein in s15, the PVA film washed from the floating color is put into a 16 ℃ stretching tank at a stretching speed of 0.76 to 1m/min for accelerated stretching; and in the s16, the PVA film stretched in the first stretching groove enters a second stretching groove at the temperature of 18 ℃ at the stretching speed of 0.96-1 m/min for accelerated stretching.
5. The process for producing a high temperature resistant iodine polarizer according to claim 1, wherein in s17, the stretched PVA film is fed into a color compensation tank at 0 ℃ at a stretching speed of 1.26m/min for color adjustment; in s18, the color-supplemented PVA film is put into a 12 ℃ cleaning tank to clean the film surface, and then is dried under the condition of 40 ℃ to obtain the PVA film with the polarization effect.
6. The production process of the high-temperature-resistant iodine-based polarizer according to claim 1, wherein in s21, the dried PVA film with the polarization effect is bonded with the outer protection film and the inner protection film to form a polarizer, the bonded polarizer is dried sequentially through four sections of ovens at 40 ℃, and a semi-finished polarizer is obtained after cooling.
7. A high-temperature-resistant iodine polarizer is characterized by being manufactured by the production process according to any one of claims 1 to 6, and sequentially comprising a first TAC layer, a PVA layer, a second TAC layer and a release film layer from top to bottom, wherein the first TAC layer and the PVA layer and the second TAC layer are attached through adhesive glue, and a PSA layer is arranged between the second TAC layer and the release film layer.
8. The High temperature resistant iodine based polarizer according to claim 7, wherein said first TAC layer and said second TAC layer are TAC films of type P905 available from LOFO High Tech Film GmbH of Germany.
9. The high temperature resistant iodine based polarizer according to claim 7, wherein said PSA layer employs a glue of type J218 from japanese national research; and coating the PSA layer between the second TAC layer and the release film layer, drying the high-temperature-resistant iodine polarizer sequentially by six sections of drying ovens with drying temperatures of 35 ℃, 45 ℃, 55 ℃, 75 ℃, 85 ℃, 70 ℃ and 60 ℃, and cooling to obtain a finished product.
10. The iodine-based polarizer according to claim 7, wherein said adhesive glue is UV glue of Shantou Gaosheng adhesive Co., Ltd to which a modifying additive is added.
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