TW200930540A - Antiglare film, and its manufacturing method - Google Patents

Abstract

In the manufacture of an antiglare film for preventing the reflection of a reflected image from giving remarkable inpression at the time of using an image display device such as a liquid crystal display, an organic EL display or a plasma display, there are provided an antiglare film, which is enabled to suppress the transverse irregularity of a web conveyance to a small level thereby to prevent the occurrence of the cramp or wrinkle of the film by making the web conveying tension different at the two transverse ends of the web, so that the film can be excellent in flatness and reduced in the surface glare and the foreign matter error, and a method for manufacturing the antiglare film. This antiglare film manufacturing method according to a solution flow-stretch filming method makes the web conveying tension different at the two transverse ends of the web on the upstream side or the downstream side in the web conveying direction of the molding roll. On the same side, there is disposed means for measuring the web conveying tensions independently right and left, and a web conveying tension adjusting mechanism is so finely adjusted that the difference between the measured values of the web conveying tensions of the two transverse web end portions by the measuring means may be 1 to 5 %.

Description

200930540 IX. OBJECT OF THE INVENTION [Technical Field] The present invention relates to an anti-glare film and a method of manufacturing the same. [Prior Art] • On the surface of an image display device, in order to prevent less display performance of external light flashing, more The surface is provided with a fine concave concave light and scattered anti-glare property. There is also a layer above the bump surface. The anti-glare layer has a visibility that blurs the outline of the surface reflection image, and is used in a liquid crystal display, an image display device of an organic EL display, etc., and the reflected light reflected on the light source side without reflection image is appropriately blurred. It has the effect of suppressing glare. Moreover, the surface of the display is touched by hand without causing damage and fingerprinting. 〇 The surface of the transparent film substrate is applied as a front panel of such an image display device, or is applied to the antiglare film by full embossing, and an antireflection layer is further formed by coating or electroless plating. In recent years, in order to increase the screen size of the display device, it is necessary to have a wide width. Especially in a large screen, planarity is required to be excellent, but the conventional anti-glare film is particularly inferior to a wide width, and the scratch-resistant property is also satisfactory in a wide-area film. In the reflection, the embossing is given to make the reflection step set anti-reflection and reduce the reflection image and the electric prize display. In addition, it is made from a variety of sparks, and it is also required to be an anti-glare film. A good anti-glare film which is obtained by chemically or physically evaporating an anti-glare film has excellent planarity, and has not been obtained. 2009200930540 Previously, it was known to apply an inorganic or organic single type to the film on the anti-glare film. Or a plurality of kinds of particles having different particle diameters, and a method of providing irregularities on the surface, but there are problems of glittering due to larger particles and problems of impurities during production. On the other hand, a method in which a special anti-glare layer is not provided, an unevenness is provided on the substrate itself, and a hard coat layer and an anti-reflection layer are provided thereon to obtain an anti-glare film having an anti-glare effect are also known from the past. . Regarding such a patent document which imparts irregularities to the substrate itself φ and causes an anti-glare effect, the following documents have been conventionally used. Patent Document 1 discloses that a polarizing plate in which a cellulose-based plastic-based protective layer is adhered to a board is embossed on the surface of the protective substrate to form a fine uneven surface, and the uneven surface is partially covered with an organic solvent. Dissolved, providing a non-reflective polarizing plate technology. Further, in Patent Document 2, it is disclosed that in the production of a triacetonitrile cellulose film, an uneven surface is provided on a support of a mixed liquid flow, and at the same time as the film is formed, unevenness is imparted to the film surface to produce an anti-glare triacetate. Further, in Patent Document 3, a method of embossing a regular shape of a thin film having a residual solvent state is disclosed. Further, in Patent Document 4, after the antireflection layer or the hard coat layer is provided on the support, the layer is pre-hardened by irradiation of an active energy ray, and then embossed and then irradiated with the active energy ray. A method of obtaining an anti-glare film. Patent Document 1: Japanese Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. In the method of Patent Document 1, since the organic solvent is dissolved by the concave 0 convex surface, the substrate itself is deteriorated in planarity due to the solvent, and The solvent has a drawback that the substrate is cloudy, which is not preferable. In the method of Patent Document 2, it is necessary to form a special flow support in the flow device, and to form an uneven surface in a state containing a high residual solvent. Therefore, it is difficult to control the formation of the uneven surface, and it is difficult to peel off and peeling easily occurs. Obstacles, the problem of poor flatness of the film. Moreover, it takes a lot of money to clean and maintain the rogue support, and the productivity is poor. In the method of Patent Document 3, the solvent content G at the start of the embossing process is processed in a state of 2.0 to 4.0 times higher than the solid content of the film, so that the coil (film) is soft and the flat processed surface must be flat. Deformation occurs when the web (film) enters the embossing roll, which has the disadvantage of easy lifting and wrinkling. In addition, when the amount of the residual solvent of the coil (film) is large, the shrinkage of the film in the processing direction is large, and the shrinkage of the film in the wide-axis direction or the conveyance direction is large, and the shrinkage of the mold roll for embossing is difficult to be performed due to shrinkage. The shape is precisely transferred, and in particular, due to shrinkage in the direction of the wide axis of the film, there is a problem that the wide axis direction is slightly damaged. Furthermore, in the method of Patent Document 4, according to the pre-hardening condition, the release property of the coating liquid and the embossing processing roll is poor, the peeling of the coating film, unevenness on the surface unevenness, cracks on the surface, and anti-reflection are provided in 200930540. The layer or hard coating peels off and is susceptible to humidity fluctuations. Therefore, in recent years, in order to anticipate the occurrence of an anti-glare film which can be customized at a low cost, it is easy to produce an anti-glare film which is broad and/or a film, and which is difficult to cause sparking of a film surface and an impurity barrier, and which is excellent in planarity. status. SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems of the prior art, and to provide an antiglare film which is excellent in planarity, reduces surface sparking, and impairs impurities, and a method for producing the same. (Means for Solving the Problem) The inventors of the present invention have found that the resin is dissolved in a solvent mixture (resin solution) according to the solution flowing film forming method in view of the above-described results, and is supported by a rotary drive having a smooth surface. The liquid flows on the body, and the solvent is volatilized until it can be peeled off from the support to form a coil (a film containing a residual solvent after the ruthenium-doped mixture is called a coil), and the residual solvent is removed by the support. The coil material is excellent in workability, and the coil material is easily subjected to full embossing processing. On the other hand, since the coil material is soft, the precision of the mold processing roller and the support roller during embossing processing is thin. The film is likely to wrinkle, and it is assumed that even if the precision is sufficient, the film thickness distribution of the meandering and/or skewing and the width of the coil in the direction of the wide axis is fluctuated, and wrinkles are likely to occur. In the upstream side or the downstream side of the coil conveying direction of the type processing roll, the left and right end portions of the coil are adjusted to be different from each other by the conveying tension of the coil, and the reduction of the coil conveyance can be suppressed. The left and right are not -7-200930540, and the film can be prevented from being lifted and collapsed, and the present invention is completed. In order to achieve the above object, the invention of claim 1 is a resin solution in which a resin is dissolved in a solvent, and has After the smoothing surface of the rotating drive branch is held on the holding body, the solvent is volatilized until it can be peeled off from the support, and the coil is formed into a coil (the film containing the residual solvent after the mixture on the support is called a coil) A method for producing an anti-glare film in which a surface of a film is pressed against a surface of a roll and a film is formed on the surface of the film by a solution-flowing method, which is formed by a method of drying the roll from which the support is removed, and forming a film on the surface of the film. In order to convey the tension of the web in the upstream side or the downstream side of the roll processing direction of the mold processing roll, the left and right end portions of the coil are adjusted to be different from each other. The invention of claim 2 is the method for producing an anti-glare film according to the first aspect of the invention, characterized in that the coil is conveyed on the upstream side or the downstream side of the coil processing direction of the mold processing roll. The tension is adjusted to a coil conveyance tension adjusting mechanism 不同 which is different from each other at the left and right end portions of the coil, and a means for independently measuring the tension of the web conveyance is provided on the same side, and the left and right ends of the coil are measured according to the measuring means. The measurement of the material conveyance tension is 1 to 5%, and the coil conveyance tension adjustment mechanism is finely adjusted. The invention of claim 3 is the method for producing an anti-glare film according to the first or second aspect of the invention, which is characterized in that the amount of residual solvent in the coil is formed by forming a concave portion of the mold processing roll. It is 10 to 70% by mass. The invention of claim 4 is the method for producing an anti-glare film according to any one of claims 1 to 3, characterized in that, when the forming rolls are formed into irregularities, the coil is cast. When processing light contact -8- 200930540 is 2.5x1 0·3~1 .〇 seconds. The invention of claim 5 is the method for producing an anti-glare film according to any one of claims 1 to 4, characterized in that the pressure of the casting processing roll for the coil is 200 to 50000 N. /m. The invention of claim 6 is the method for producing an anti-glare film according to the second aspect of the invention, characterized in that the coil conveying tension adjusting mechanism and the coil at the left and right ends of the coil according to the measuring means The difference in the measurement of the transport tension is adjusted to 2 to 4.5%. The invention of the anti-glare film of claim 7 is characterized in that it is manufactured by the method described in any one of the first to sixth aspects of the patent application. (Effects of the Invention) The invention of claim 1 is a blending solution (resin solution) in which a thermoplastic resin is dissolved in a solvent, and flows on a rotary drive support having a smooth surface to volatilize the solvent until it can be peeled off on the support. When the φ coil is formed, the coil is peeled off from the support, and the surface of the coil is pressed against the surface of the coil to form an anti-glare film on the surface of the film. In the manufacturing method, the tension of the web in the upstream side or the downstream side of the coil processing direction of the mold processing roll is adjusted to be different from each other at the left and right end portions of the coil, according to the first item of the patent application scope. According to the invention, it is possible to prevent the occurrence of sling, wrinkles, and minute damage on the surface, and to achieve an effect of producing an anti-glare film which is excellent in flatness, reduced surface sparking, and impaired impurities under high productivity. The invention of claim 2 is the method for producing an anti-glare film as described in the first paragraph of the patent application -9-200930540, which is characterized in that the upstream side or the downstream side of the roll conveying direction of the mold processing roll is The coil conveying tension adjusting mechanism that adjusts the conveying tension of the coil to the left and right end portions of the coil to be different from each other, and the means for independently measuring the tension of the coil conveyance on the same side, and the coils according to the measuring means are provided. The measurement of the web conveyance tension at both ends is 1 to 5%. The micro-motion adjustment coil conveyance tension adjustment mechanism does not cause lifting or wrinkling according to the invention of the second application of the patent application. ❹ and minor damage to the surface, and the effect of producing an anti-glare film which is excellent in planarity, reduced surface sparking, and impurity barrier under high productivity. The invention of claim 3 is the method for producing an anti-glare film according to the first or second aspect of the invention, wherein the amount of residual solvent in the coil when the forming roll is formed by the forming roll is 10 to 70 If the quality is %, according to the invention of claim 3, there will be no sling, wrinkles, and minor damage to the surface, and an anti-glare film which is excellent in planarity, reduces surface sparking, and impairs impurities. Effect. The invention of claim 4 is the method for producing an anti-glare film according to any one of the preceding claims, wherein the forming of the forming roll is used to form a roll for the mold. If the contact time of the processing roller is 2·5χ10_3~1.0 seconds, if it is issued according to the fourth paragraph of the patent application scope, no lifting, wrinkles and minor damage to the surface will occur, and high production can be achieved. The effect of producing an anti-glare film which is excellent in planarity and reduces surface sparking and impurity barriers. The invention of claim 5 is the manufacturer of the method for producing an anti-glare film according to any one of the above-mentioned claims, wherein the invention is based on the fifth aspect of the patent application. The invention of the anti-glare film can achieve the effects of excellent planarity, reduced surface sparking, and impurity barrier. [Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings, but the present invention is not limited thereto. In this specification, the front and rear and the left and right are based on FIG. 1 , and the front side means the right side of FIG. 1 , that is, the conveying direction of the web or the film, the so-called back means the same as the left side, and the left and right means the front side. . The method for producing an anti-glare film of the present invention is a blending solution (resin solution) in which a resin is dissolved in a solvent, flowing on a rotary drive support having a smooth surface, and volatilizing the solvent until it can be peeled off from the support to form a roll. After the material is scraped, the film processing roll is brought into contact with the surface of the coil to form a solution flowing and forming a film on the surface of the film. In the method for producing the antiglare film of the present invention, the web is conveyed in tension on the upstream side or the downstream side in the coil conveying direction of the mold processing roll, and is adjusted to be different from each other at the left and right end portions of the web. Generally, the coil material containing the residual solvent amount is soft on the surface of the coil, and the surface of the surface is excellent in workability. However, when the coil is pressed to the mold roll, the coil is liable to be hoisted and wrinkled. The lifting and wrinkling of the coiled material is a non-uniformity in the width direction of the film thickness by the conveyance of the coil material, a slight left-right deviation of the conveying device such as a roller row, or a left-right wind speed difference of the drying wind during drying. And the temperature difference occurs. The left and right deviation of the equipment is as small as possible during the installation of the production equipment. It is also small due to the repeated temperature changes of the temperature changes at the beginning and end of the production, which is extremely difficult to maintain in the long run. Lifting and wrinkling conditions. Then, in the present invention, it has been found that the lifting tension and the wrinkles can be suppressed by the difference in the transport tension between the left and right ends of the coil in the upstream or downstream side of the direction in which the coil of the mold processing roll is conveyed. . In the upstream side of the coil, the tension between the left and right end portions of the coil is different, and the tension applied to the width direction of the coil member is less likely to cause lifting and wrinkling. Further, it is considered that when the conveying tension between the left and right end portions of the coil is different on the downstream side of the coil, the tension applied to the width direction of the coil acts to resist the lifting and the entanglement that has occurred. In this embodiment, in the upstream side or the downstream side of the roll processing direction of the roll processing roll, the web conveyance tension adjustment in which the conveyance tension of the web is adjusted to be different from each other in the left and right end portions of the web is provided. The mechanism is provided on the same side as the means for independently measuring the tension of the coil conveyance. Then, the coil conveyance tension adjusting mechanism is finely adjusted in accordance with the measurement of the conveyance tension of the web at the left and right end portions of the coil by the measurement means of 2 to 4.5%. Here, according to the measurement of the web conveyance tension of the left and right end portions of the coil of the measuring means, if the control is adjusted in the same manner, it is susceptible to the malfunction of the arrangement of the apparatus and the variation in the thickness of the processed coil, and It is easy to cause unevenness in the width direction and the conveying direction of the web, which is not preferable. Further, the web material has a different film thickness variation in the width direction depending on the conveyance direction, and the web conveyance tension at the left and right end portions fluctuates from time to time. However, if the fluctuation is adjusted and controlled to be zero, the roll is rolled. The material is slightly hoisted in the direction of transport ' -12- 200930540 and it is not uniform because of the bulging. Further, if the measurement enthalpy difference of the web conveyance tension at the left and right end portions of the coil is excessively large depending on the measuring means, the coil is likely to be hoisted and wrinkled when it enters the mold processing roll. For such reasons, it is preferable that the difference in conveying tension between the left and right end portions of the coil is 1 to 5%, and more preferably 2 to 4.5%. In the method of the present invention, it is preferred that the amount of residual solvent in the web when the mold processing rolls are formed into irregularities is 10 to 70% by mass. © Here, when the surface of the coil containing the residual solvent amount is processed, the coil is dried to shrink the coil in the wide axis direction and the conveying direction, and the surface of the casting roll has a relative speed and the mold The unevenness on the surface of the roll causes minute damage in the width direction and the conveying direction of the surface of the coil. This damage can be suppressed by the residual solvent amount of the coil material being 70% by mass or less. However, if the amount of the residual solvent of the coil is less than 10% by mass, the concave and convex processing of the insert roller must be subjected to a large pressing force, and wrinkles of the film are more likely to occur. Further, in the present invention, when the irregularities are formed by the mold processing rolls, the contact time of the film on the mold processing rolls is preferably 2.5 x 10 · 3 to 1.0 second. That is, when the packaging time and the packaging time of the film and the mold roll are large, hoisting and damage are liable to occur, and in the case of the hour, the workability is deteriorated, and the appropriate packaging time and packaging time are present. According to the method of the present invention, slings, wrinkles, and minute damage to the surface do not occur, and an anti-glare film which is excellent in planarity and which reduces surface sparkling and impurity defects can be produced with high productivity. The method for producing the antiglare film of the present invention is described below in the order of the solution flowing film forming method. -13-200930540 (Polymer) The resin preferably used in the method for producing an anti-glare film of the present invention may, for example, be cellulose acetate, cellulose acetate propionate or cellulose acetate butyrate. a cellulose ester resin having a thiol substitution degree of 1.8 to 2.80, a resin, or a cellulose ether resin having a degree of alkyl substitution of 2.0 to 2.80, such as cellulose methyl ether, cellulose ethyl ether or cellulose propyl ether, a cycloolefin resin, and a raw material. Borneene terpene resin, polycarbonate resin, or polyamine resin of a polymer of an alkyl dicarboxylic acid and a diamine, or a polymer of an alkyl dicarboxylic acid and a diol, an alkylene glycol and a polymer of a dicarboxylic acid, a polymer of a cyclohexanedicarboxylic acid and a diol, a polymer of a cyclohexanediol and a dicarboxylic acid, a polymer of an aromatic dicarboxylic acid and a diol, or the like, or a vinyl acetate resin such as polyvinyl acetate or a vinyl acetate copolymer, or a polyvinyl acetal resin such as polyvinyl acetal or polyvinyl butyral, an epoxy resin, a ketone resin or an alkylene group. A polyaminol group of a linear polymer such as a diisocyanate and an alkylene glycol Q tree aliphatic ester, etc., and which contains at least one selected preferably. Among them, cellulose ester resins such as cellulose acetate, cellulose acetate propionate, and cellulose acetate butyrate, a cycloolefin resin, an original borneol resin, and a polycarbonate resin are particularly preferred. Further, it is also possible to dissolve two or more kinds of polymers having compatibility, and to dissolve the mixture described later, but the present invention is not limited thereto. Other resins preferably used in the present invention include monomers or copolymers having ethylenically unsaturated monomer units. More preferably, polymethyl acrylate, polyethyl acrylate, poly propyl acrylate, polycyclohexyl acrylate, copolymer of propylene-14 - 200930540 acid alkyl ester, polymethyl methacrylate, polyethyl methacrylate A monomer or copolymer of acrylic acid or methacrylic acid ester such as polycyclohexyl methacrylate or alkyl methacrylate copolymer. Further, since the ester of acrylic acid or methacrylic acid is excellent in transparency and compatibility, it is a monomer or copolymer having an acrylate or methacrylate unit, particularly, having an acrylic acid or methyl methacrylate unit. A monomer or copolymer is preferred. In particular, polymethyl methacrylate is preferred. The alicyclic alkyl ester of acrylic acid or methacrylic acid such as polyacrylic acid or poly(meth)acrylate is preferably one having the advantages of high heat resistance, low hygroscopicity, and low birefringence. (Cellulose ester) The cellulose of the cellulose ester raw material used in the present invention is not particularly limited, and examples thereof include cotton cotton linters, wood pulp, and kenaf. The cellulose esters obtained therefrom are used singly or in any ratio. In the present invention, in the case where the cellulose ester is a anhydride of acetic anhydride (acetic anhydride, propionic anhydride, butyric anhydride), an organic solvent such as an organic acid such as acetic acid or dichloromethane is used and used. The protonic catalyst is reacted with sulfuric acid. In the case where the oxime agent is decyl chloride (ch3coci, c2h5coci, c3h7coci), an amine-like basic compound can be used as a catalyst for the reaction. Specifically, the 〇 cellulose ester can be synthesized by a method described in JP-A-10-45804 to react a thiol group with a hydroxyl group of a cellulose molecule. Cellulose Molecules consist of a number of glucose units linked to each of the glucose units from -15 to 200930540 with three hydroxyl groups. The number of fluorenyl groups derived from the three hydroxyl groups is referred to as the degree of substitution. For example, cellulose triacetate in which all three hydroxyl groups of the glucose unit are combined with an ethyl group. The cellulose ester which can be used for the cellulose ester film preferably has a total thiol substitution degree of 2.4 to 2.8. The molecular weight of the cellulose ester used in the present invention may be a number average molecular weight (??) of from 50,000 to 200,000. It is more preferably 60,000 to 200,000, and 80,000 to 200,000 is particularly good. The cellulose ester used in the present invention is a ratio of a mass average molecular weight (Mw) to a number average molecular weight (??), and Mw/Mn is preferably from 1.4 to 3.0 as described above, more preferably from 1.7 to 2.2. The average molecular weight and molecular weight distribution of the cellulose ester can be measured by a known method using high-speed liquid chromatography. Using this, the number average molecular weight and the mass average molecular weight were calculated, and the ratio (Mw/Mn) was calculated. The measurement conditions were as follows. Solvent: dichloromethane

〇 Column: Shodex-K806, K805, K803G (Showing 3 columns of Showa Denko Co., Ltd.)

Column temperature: 2 5 °C Sample concentration: 0.1% by mass. Detector: RI Model 504 (manufactured by GL Science) Pump: L6 000 (manufactured by Hitachi, Ltd.) Flow rate: 1 · 0 m 1 / mi η Calibration curve : A calibration curve of 13 200930540 samples using standard polystyrene STK standard polystyrene (manufactured by Tosoh Corporation) Mw = 1000000 to 500. It is preferred that 13 samples are used at approximately equal intervals. The cellulose ester used in the present invention is a carboxylate having a carbon number of from 2 to 22, and particularly preferably a lower fatty acid ester of cellulose. The lower fatty acid in the lower fatty acid ester of cellulose means a fatty acid having 6 or less carbon atoms. For example, cellulose acetate, cellulose propionate, cellulose butyrate, cellulose acetate 酞 can be used. Cellulose acetate, acrylic acid, cellulose, etc., as described in JP-A-H05-45804, JP-A-8-231761, and JP-A No. 2,311,052 A mixed fatty acid ester such as acetate butyrate. Further, an ester of an aromatic carboxylic acid and cellulose, and a cellulose oxime described in JP-A-2002-2751, JP-A-2002-265639, and JP-A-2002-265563A are also preferred. use. Among the above, the lower fatty acid ester of cellulose which is particularly preferably used is cellulose triacetate or cellulose acetate acrylic acid. These cellulose esters can also be used in combination. G cellulose esters other than cellulose triacetate, having a fluorenyl group having 2 to 4 carbon atoms as a substituent, and the degree of substitution of the ethyl thiol group is regarded as X, and the degree of substitution of the propyl fluorenyl group or the butyl fluorenyl group is regarded as In the case of Y, the cellulose esters of the following formulas (a) and (b) are simultaneously satisfied. Formula (a) 2.4 S X + Y $ 2.8 Formula (b) 0SXS2.5 The moiety which is not substituted by a mercapto group is usually present in a hydroxyl form. It can be synthesized by a known method. -17- 200930540 These thiol substitutions can be determined according to the method specified in ASTM-D8 17-96. In the case of acetaminophen, if the vinegarization rate is to be increased, the time for the acetation reaction must be prolonged. However, if the reaction time is too long, the decomposition proceeds at the same time, causing the cutting of the polymer chain and the decomposition of the acetyl group, which also causes a poor effect. Therefore, it is necessary to set the reaction time to a certain range by increasing the degree of acetification and suppressing the decomposition to some extent. The reaction conditions specified by the reaction time are various, and the other conditions of the reaction apparatus and equipment are greatly changed, so that it is not suitable. As the polymer is decomposed and the molecular weight distribution is broadened, in the case of the cellulose ester, the degree of decomposition can also be specified by the mass average molecular weight (Mw) / number average molecular weight (?n) which is usually used. That is, in the vinegarization process of cellulose triacetate, the mass average molecular weight (Mw) / number average molecular weight of an index which is not excessively long and decomposed and which is subjected to a sufficient time for vinegarization reaction on vinegar is used. (Μη)値. When an example of a method for producing a cellulose ester is shown below, 100 parts by mass of cotton cotton linter which is a raw material of the cellulose is pulverized, and 40 parts by mass of acetic acid is added and pretreated at 36 ° C. 20 minutes. Thereafter, 8 parts by mass of sulfuric acid, 260 parts by mass of acetic anhydride, and 350 parts by mass of acetic acid were added, and esterification was carried out at 36 ° C for 120 minutes. After neutralizing with 11 parts by mass of a 24 mass% magnesium acetate aqueous solution, it was alkalized and aged at 63 ° C for 35 minutes to obtain acetaminophen cellulose. This was stirred for 160 minutes at room temperature using a 10-fold aqueous acetic acid solution (acetic acid: water = 1 : 1 (mass ratio)), and then filtered and dried to obtain purified acetonitrile cellulose having a degree of substitution of 2.75. The acetamidine cellulose had a Μη of 92,000, a Mw of 156,000, and a Mw/Mn of 1.7. Also adjust the esterification conditions of cellulose esters ( -18- 200930540 degrees to obtain the combination of the pieces of water, \)y mix, time, temperature

A cellulose ester having a different Mw/Mn ratio. Further, it is preferred that the cellulose ester to be synthesized is subjected to purification to remove a low molecular weight component and to remove unacetified components by filtration. Further, in the case of the acidified cellulose ester, it can be obtained by the method described in JP-A-10-45804. The method for determining the degree of substitution of thiol can be determined in accordance with ASTM-817-96. © In addition, cellulose esters are also affected by trace metals in cellulose esters. It is considered that it is related to the water used in the production step, and it is preferable that the amount of the insoluble core is small, and the metal ions such as iron, calcium, and magnesium form a salt with a polymer decomposition product or the like which may contain an organic acid group. Insoluble matter can be formed, so it is preferable to use less. The iron (Fe) component is preferably 1 ppm or less. The calcium (Ca) component is contained in a large amount in groundwater, river water, etc., and if it is a lot, it becomes hard water, and it is not suitable as a hydrazine water, and an acidic component, such as a carboxylic acid, and a sulfonic acid, and many ligands are formed easily. Coordination compound, €> That is, a complex compound that forms dregs from many insoluble calcium (insoluble precipitate, turbidity). The Chiang (Ca) component is 60 ppm or less, preferably 0 to 30 ppm. When the magnesium (Mg) component is too large, an insoluble component is produced. Therefore, it is preferably 0 to 70 ppm, particularly preferably 0 to 20 ppm. The metal component such as the content of iron (Fe), the content of the bell (Ca), and the content of magnesium (Mg) is such that the dried cellulose ester is subjected to a micro-dip wet decomposition apparatus (sulfuric acid decomposition) and alkali fusion. After the pretreatment, analysis can be performed by using ICP-AES (Induction Combined Plasma Luminescence Spectroscopic Analyzer). -19- 200930540 (Organic solvent) Dissolve cellulose ester to form a blending solution (solvent is a chlorine-based organic solvent and a non-chlorine-based organic solvent, methylene chloride, and is suitable for the dissolution of cellulose ester. Review of non-chlorine The organic solvent may, for example, be methyl acetate, φ, acetone, tetrahydrofuran, 1,3-dioxane, 1, ethyl formate, 2,2,2·trifluoroethanol, 2, 2, 3, 3 · Fluor-2-propanol, 1,1,1,3,3,3-hexafluoro-2-methyl. Hexafluoro-2-propanol, 2,2,3,3,3-pentafluoro-1 -propanol is a method of dissolving such an organic solvent with respect to a cellulose ester at normal temperature, and is preferably dissolved by using a dissolution method, a high-pressure dissolution method, etc. For cellulose triacetate, © using dichloro Methane, but with methyl acetate, ethyl acetate, especially methyl acetate. The organic solvent with good solubility in the present invention is called a good solvent in the present invention, so that the blend contains only 1 to 40 mass. % of the carbon atoms 1 to 4 on the body, the mixture is flowed, the solvent is evaporated, the film is mixed (coil), and the coil becomes solid. The organic solvent which is easily peeled off and has a useful organic solvent on the cellulose ester liquid which promotes a non-chlorinated organic solvent. The chlorine-based organic solvent is solvable. The use of machine solvents. Ethyl chloroacetate, amyl acetate 4-dioxane, cyclohexanone, hexafluoro-1-propanol, 1,3-di-2-propanol, l,l,l,3,3,3-, Nitroethane and the like. In the case of use, the high-temperature dissolution method and the cooling method can also reduce the cellulose ester other than the insoluble matter, and the ester and acetone can be preferably used. The above cellulose ester has the above organic solvent, and the alcohol is preferred. . It is used in the case where the ratio of the amount of the alcohol is increased, and it is used as a gold-soluble one and dissolves when the ratio is small. -20- 200930540 The alcohol having 1 to 4 carbon atoms may, for example, be methanol, ethanol, n-propanol, isopropanol, n-butanol or second butanol 't-butanol. Among them, ethanol is preferred from the viewpoints of excellent stability of the blending liquid, low boiling point, and good drying property. These organic solvents are not soluble in cellulose ester alone, so they are called poor solvents. The concentration of the cellulose ester in the blending solution is 15 to 30% by mass, and the viscosity of the blending solution is such that the measured enthalpy of the B-type viscometer is adjusted to a range of 1 〇~1 〇〇pa*s, which is good for obtaining a good film surface. Quality is better. Additives added to the blend are plasticizers, UV absorbers, antioxidants, dyes, microparticles. In the present invention, these additives may be added at the time of preparing a cellulose ester solution, and may also be added at the time of preparation of a fine particle dispersion of a matting agent or the like. It is preferable to add a plasticizer, an antioxidant, an ultraviolet absorber or the like which imparts heat resistance and moisture resistance to the polarizing plate of the liquid crystal image display device. The following description pertains to the additive. Ο (plasticizer) In the present invention, in the cellulose ester solution or the blending liquid, in order to improve mechanical properties, impart softness, impart water absorption resistance, reduce water vapor permeability, adjust retention, etc., Preferred compounds of the plasticizer are preferred, and for example, a phosphate ester and a carboxylate are preferably used. The phosphate ester may, for example, be triphenyl phosphate, tricresyl phosphate or phenyl diphenyl phosphate. The carboxylic acid esters are phthalic acid esters and citrate esters, and the phthalic acid esters may, for example, be phthalocyanine-21 - 200930540 dimethyl acid, diethyl phosphate, dioctyl phthalate and diethyl hexyl citrate, etc., citric acid Examples of the esters include acetaminoethyl citrate and tributyl citrate. Further, examples thereof include butyl oleate, methyl decyl ricinolate, and dibutyl sebacate 'glycerin triacetate. Alkyl mercaptoalkyl glycolate is also preferably used for this purpose. The alkyl group of the alkyl mercaptoalkyl glycolate is an alkyl group having 1 to 8 carbon atoms. Examples of the alkyl mercapto alkyl glycolate include methyl mercapto methyl glycolate, ethyl mercapto ethyl glycolate, propyl mercapto propyl glycolate, and butyl mercapto butyl glycolate. Ester, octyldecyl octyl glycolate, methyl decyl ethyl glycolate, ethyl decyl methyl glycolate, ethyl decyl propyl glycolate, propyl decyl ethyl glycolic acid Ester, methylmercaptopropyl glycolate, methyl decyl butyl glycolate, ethyl decyl butyl glycolate, butyl decyl methyl glycolate, butyl decyl ethyl glycolic acid Ester, propyl decyl butyl glycolate, butyl decyl propyl glycolate, methyl decyl octyl glycolate, ethyl decyl octyl glycolate, octyl decyl methyl glycolate Ester 'octyl decyl ethyl glycolate, etc., and methyl 酞 Φ methyl glycolate, ethyl decyl ethyl glycolate, propyl propyl propyl glycolate, butyl fluorenyl Butyl glycolate and octyldecyl octyl glycolate are preferably used. Further, these alkyl mercapto alkyl glycol esters may be used in combination of two or more kinds. Further, a polyvalent alcohol ester is also preferably used. The polyvalent alcohol used in the present invention is represented by the following general formula. R1 - (OH)n However, in the formula, R1 is an organic group η which represents η valence is a positive integer of -22 to 200930540 indicating 2 or more, and an OH group is an alcoholic and/or phenolic hydroxyl group. The polyvalent alcohol ester-based plasticizer is a plasticizer composed of an ester of a divalent or higher aliphatic polyvalent alcohol and a monocarboxylic acid, and preferably has an aromatic ring or a ring g-based ring in the molecule. An aliphatic polyvalent alcohol ester having a valence of 2 to 20 is preferred. Examples of preferred polyvalent alcohols include, for example, the following, but the present invention is not limited thereto. Examples thereof include ribitol, arabitol, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,2-propylene glycol, 1,3-propanediol, dipropylene glycol, tripropylene glycol, and 1 , 2-butanediol, 1,3-butanediol, 1,4-butanediol, dibutylene glycol, 1,2,4-butanetriol, 1,5-pentanediol, 1, 6-hexanediol, hexanetriol, galactitol, mannitol, 3-methylpentane-1,3,5-triol, o-di-tertiol, sorbitol, trimethylolpropane , trimethylolethane, xylitol, and the like. In particular, triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol, sorbitol, trimethylolpropane, and xylitol are preferred. The monocarboxylic acid to be used for the polyvalent alcohol ester is not particularly limited, and a known aliphatic monocarboxylic acid, alicyclic monocarboxylic acid, aromatic monocarboxylic acid or the like can be used. When an alicyclic monocarboxylic acid or an aromatic monocarboxylic acid is used, it is preferable in terms of improving moisture permeability and retention. The preferred examples of the monocarboxylic acid include the following, but the present invention is not limited thereto. As the aliphatic monocarboxylic acid, a fatty acid having a linear or side chain having a carbon number of 1 to 32 is preferably used. It is more preferable that the carbon number is from 1 to 20, and it is particularly preferable that it is 1 to 1 inch. If acetic acid is contained, the compatibility with cellulose ester is increased, so it is preferable to use acetic acid in combination with other monocarboxylic acids. Preferred aliphatic monocarboxylic acids include acetic acid, propionic acid, butyric acid 'valeric acid-23-200930540, caproic acid, heptanoic acid, caprylic acid, capric acid, capric acid, 2-ethyl-hexanoic acid, undecanoic acid. , lauric acid, tridecanoic acid, myristic acid, pentadecanoic acid, palmitic acid, heptadecanoic acid, stearic acid, nonadecanic acid, arachidic acid, behenic acid, tetracosanoic acid, twenty a saturated fatty acid such as hexaic acid, heptacosanoic acid, montanic acid, melamine acid or lacquer acid, undecylenic acid, oleic acid, sorbic acid, linoleic acid, linolenic acid, arachidonic acid, etc. Unsaturated fatty acids, etc. Preferred examples of the alicyclic monocarboxylic acid include cyclopentanecarboxylic acid, cyclohexanecarboxylic acid, cyclooctanecarboxylic acid, or a derivative thereof. Examples of the preferred aromatic monocarboxylic acid include those in which a benzene ring of benzoic acid such as benzoic acid or toluic acid is introduced into an alkyl group, and two or more benzene rings such as a biphenylcarboxylic acid, a naphthalenecarboxylic acid or a tetrahydronaphthalenecarboxylic acid. An aromatic monocarboxylic acid, or a derivative thereof. Especially benzoic acid is preferred. The molecular weight of the polyvalent alcohol ester is not particularly limited, and is preferably 300 to 15 00, and more preferably 3 to 50 to 75. The carboxylic acid used in the case of a large molecular weight is difficult to volatilize, and the carboxylic acid used as a polyvalent alcohol ester in terms of moisture permeability and compatibility with a cellulose ester may be one type, and may also be Mixing 2 or more types. Further, the mercapto group in the polyvalent alcohol may be all esterified, and a part of the mercapto group may remain as it is. These compounds are preferably contained in an amount of from 1 to 30% by mass, preferably from 1 to 20% by mass, based on the cellulose ester. Further, in order to suppress bleeding during stretching and drying, it is preferred to use a compound having a vapor pressure of 1400 Pa or less in TC. These compounds can be added together with a cellulose ester and a solvent when preparing a cellulose ester solution. In addition, in the present invention, it is preferred to use an aromatic terminal ester-based plasticizer represented by the following general formula (2).

General formula (2) B-(GA)nGB (wherein B represents a benzene monocarboxylic acid residue, and G represents an alkyl diol residue having a carbon number of 2 to 12 or a carbon number of 6 to 12 a diol residue, or an alkylene diol residue having a carbon number of 4 to 12, and A is an alkylene dicarboxylic acid residue having a carbon number of 4 to 12 or a carbon number of 6 to 12 The dicarboxylic acid residue, n is an integer representing 1 or more). In the general formula (2), the benzene monodecanoic acid residue and the G are not an alkyl diol residue or an oxygen alkyl diol residue or an aryl diol residue. The alkylene dicarboxylic acid residue or the aryl dicarboxylic acid residue represented by Α can be obtained by the same reaction as the usual polyester plasticizer. The benzene monocarboxylic acid component of the aromatic terminal ester-based plasticizer used in the present invention is, for example, benzoic acid, p-tert-butylbenzoic acid, o-toluic acid, meta-toluic acid G, p-toluic acid, dimethylbenzoic acid, and B. The benzoic acid, n-propyl benzoic acid, amino benzoic acid, ethoxy benzoic acid, and the like can be used singly or in combination of two or more kinds. The aromatic terminal ester-based plasticizer used in the present invention has a carbon number of 2 to 12; the alkylene glycol component is ethylene glycol, 1,2-propanediol, and 1,3-propanediol. 2-butanediol, 1,3-butanediol, 2-methyl-1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 2,2-dimethyl-1 , 3-propanediol (neopentylene glycol), 2. 2-Diethyl-1,3-propanediol (3,3-dimethylolpentane), 2-n-butyl-2-ethyl-1,3-propanediol (3,3-dihydroxymethylglycol) Alkane), 3-methyl-1,5-pent-25- 200930540 alkanediol 1,6-hexanediol, 2,2,4-trimethyl-1,3-pentanediol, 2-B -1,3-hexanediol '2-methyl-1,8-octanediol' 1,9-nonanediol, 1,10-nonanediol, 1,12-octadecanediol, etc. These diols may be used alone or in combination of two or more. Further, the aromatic terminal ester has a carbon number of 4 to 12, and the alkylene glycol component is, for example, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, or tripropylene glycol. One type or a mixture of two or more types may be used for the alcohol. Further, the aryl diol component having 6 to 12 carbon atoms of the aromatic terminal ester is, for example, hydroquinone, resorcin, bisphenol A, bisphenol F, bisphenol or the like, and these diols can be used. Kind or a mixture of two or more kinds. The alkylene dicarboxylic acid component having a carbon number of 4 to 1 2 of the aromatic terminal ester is, for example, succinic acid, maleic acid, fumaric acid, glutaric acid, adipic acid, azelaic acid, or azelaic acid. The acid, dodecanedicarboxylic acid, etc. may be used alone or in combination of two or more kinds. The aryldicarboxylic acid component having 6 to 12 carbon atoms is citric acid, p-citric acid, 1,5-naphthalene dicarboxylic acid, 1,4-naphthalenedicarboxylic acid or the like. ❹ The aromatic terminal ester type plasticizer has a number average molecular weight of preferably from 300 to 2,000, more preferably from 500 to 1,500. Also, its acid value is 0. 5 mgKOH/g or less, the hydroxyl value is 25 mgKOH/g or less, more preferably the acid value is 0. 3 mgKOH/g or less, and a hydroxyl group value of 15 mgKOH/g or less is appropriate. The acid value of the aromatic terminal ester means that the acid contained in 1 gram of the sample (the carboxyl group in the terminal of the molecule) is neutralized. The number of milligrams of potassium hydroxide. The acid value and the hydroxyl value can be measured in accordance with JIS K 0070 (1992). The content of the aromatic terminal ester-based plasticizer used in the present invention is preferably, for example, 1 to 20% by mass in the cellulose ester film of -26 to 200930540, particularly preferably 3 to 11% by mass. (Ultraviolet Absorber) In the present invention, the cellulose ester film may contain an ultraviolet absorber. - A UV absorber which can be used, for example, a hydroxybenzophenone-based compound, a benzotriazole-based compound, a salicylate-based compound, a benzophenone-based compound, a cyanoacrylate-based compound, and a nickel-stack salt The compound, the tri-till compound, and the like are preferably a benzotriazole-based compound having less coloration. Further, the ultraviolet absorber described in Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. Polymers described in Japanese Unexamined Patent Publication No. Publication No. JP-A No. 2002-473 No. Ultraviolet absorbers are also preferred. The ultraviolet absorbing agent is excellent in ultraviolet absorbing energy at a wavelength of 3 to 70 nm or less, and preferably has a small absorption of visible light having a wavelength of 400 nm or more from the viewpoint of liquid crystal display properties. Specific examples of the ultraviolet absorber usable in the present invention include 2-(2'-'hydroxy-5'-methylphenyl)benzotriazole, 2-(2,-hydroxy-3',5'-di- Tert-butylphenyl)benzotriazole, 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)benzotriazole, 2-(2'-hydroxy-3 ',5'-di-t-butylphenyl)-5-chlorobenzotriazole, 2-( 2'-hydroxy-3'-( 3",4",5",6"-tetrahydro酞醯iminomethyl)-5'-methylphenyl)benzotriazole, 2,2-methylenebis(4- -27- 200930540 (1,1,3,3-tetramethylbutyl) )-6-(2H-benzotriazol-2-yl)phenol), 2_(2'-hydroxy-3'-t-butyl-5'-methylphenyl)·5-chlorobenzotriene Oxazole, 2-( 2Η-benzotriazol-2-yl)-6-(linear and side chain dodecyl)-4-methylphenol, octyl-3-[3-tert-butyl- 4-hydroxy-5-(chloro-2H-benzotriazol-2-yl)phenyl]propionate with 2-ethylhexyl-3-[3-tri-butyl-4-hydroxy-5 - a mixture of (5-chloro-2H-benzotriazol-2-yl)phenyl]propionate, etc. 'but is not limited thereto. Further, commercially available products 〇 ITNUVIN 109, TINUVIN 171, and TINUVIN 326 (all manufactured by Ciba Specialty Chemicals Co., Ltd.) are preferably used. Examples of the polymer ultraviolet absorber include a reactive ultraviolet absorber RUVA-93 manufactured by Otsuka Chemical Co., Ltd. Specific examples of the benzophenone-based compound include 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, and 2-hydroxy-4-methoxy-5-sulfonate. But benzophenone, bis(2-methoxy-4-hydroxy-5-benzylidene phenylmethane), and the like, but is not limited thereto. The above-mentioned ultraviolet absorber which is preferably used in the present invention is preferably a benzotriazole-based ultraviolet absorber and a benzophenone-based ultraviolet absorber which are excellent in transparency and excellent in preventing deterioration of the polarizing plate and the liquid crystal element, and are unnecessary. A benzotriazole-based ultraviolet absorber having less coloration is particularly preferred. The method for adding the ultraviolet absorber to the blending solution is not limited if the ultraviolet absorber is dissolved in the blending solution. In the present invention, the ultraviolet absorber is dissolved in dichloromethane, methyl acetate, diolanole, or the like. A mixed organic solvent for a cellulose ester as a good solvent or a poor solvent and a poor solvent of a lower aliphatic alcohol (methanol, ethanol, propanol, butanol, etc.) and added to the cellulose ester solution in a UV absorber solution form. Or it can be added directly to the mixed composition of -28-200930540. If it is insoluble in organic solvents like inorganic powder, it can be added to the blending solution by using a dissolving rod and sanding in an organic solvent and a polymer, and dispersing. The content of the ultraviolet absorber is 0. 01 to 5 mass%, especially 0. 5 to 3 mass%. In the present invention, the ultraviolet absorbers may be used singly or in combination of two or more kinds. ❹ (Antioxidant) The antioxidant is preferably a hindered phenol-based compound, for example, 2,6-di-t-butyl-p-cresol, pentaerythritol-tetra[3-(3,5-di- Tributyl-4-hydroxyphenyl)propionate], triethylene glycol-bis[3-(3-tert-butyl-5-methyl-4-hydroxyphenyl)propionate], 1, 6-hexanediol-bis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], 2,4-bis-(n-octylthio)-6-( 4-hydroxy-3,5-di-t-butylanilino)-1,3,5-three tillage, 2,2-thio-indole diethyl bis[3-(3,5-di- Tert-butyl-4-hydroxyphenyl)propionate], octadecyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, n,N'- Benzyl bis(3,5-di-t-butyl-4-hydroxy-hydroaminocyanide), :l,3,5-trimethyl-2,4,6-tris(3,5-di- Tributyl-4-hydroxybenzyl)benzene, tris-(3,5-di-t-butyl-4-hydroxybenzyl)-isocyanurate, and the like. Especially 2,6-di-t-butyl-p-cresol, pentaerythritol-tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], triethylene Alcohol-bis[3-(3-tert-butyl-5-methyl-4-hydroxyphenyl)propionate] is preferred. Further, for example, it is also possible to use ^-chuan,-bis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propanium] oxime, etc. -29-200930540 A phosphorus-based processing stabilizer such as a metal inert agent and tris(2,4-di- gastric tributylphenyl) phosphite. The amount of these compounds added is 1 ppm to 1 by mass relative to the cellulose ester. 0% is preferable, and 10 to 1 〇〇〇 ppm is more preferable. Hereinafter, examples of the fine particles used in the present invention are listed, but are not limited thereto.  Examples of the fine particles include inorganic compound particles or organic compound particles. Examples of the inorganic compound particles include metals such as cerium oxide, titanium oxide, aluminum oxide, chromium oxide, kaolin, talc, clay, calcined calcium citrate, calcium citrate hydrate, aluminum citrate, magnesium citrate, and calcium phosphate. Oxide, hydroxide, citrate, phosphate, carbonate, calcium citrate, potassium titanate, aluminum borate, basic magnesium sulfate, glass fiber, and the like. Examples of the organic compound particles include fine particles of a polyfluorene resin, a fluororesin, and an acrylic resin, and a polyoxyxylene resin is preferable, and those having a three-dimensional network structure are particularly preferable. For example, Tospearl 103, the same 105, the same 108, the same 120, the same 145, the same 3120, and the same 240 (made by Toshiba Silicone Co., Ltd.) can be cited. In addition, it is also possible to use two or more different types (compositions) and shape particles. Examples of the cerium oxide microparticles include Aerosil (AEROSIL) 200, 200V, 300, R972, R972V, R974, R202, R812, R805, 0X50, TT600, etc., manufactured by Aerosil Co., Ltd., preferably Aerosil 200V, R972, R972V, R974, R202, R812. These microparticles may be used in combination of two or more kinds. When two or more types are used, they can be mixed in any ratio of -30 - 200930540. (Interacting Agent) The blending liquid or fine particle dispersion used in the present invention preferably contains an interface 'active agent, and is not particularly limited to a phosphate system, a sulfonic acid system, a carboxylic acid system, a nonionic system, a cationic system, or the like. . For example, it is described in Japanese Laid-Open Patent Publication No. SHO-61-243 83. The amount of the surfactant added is 0. 002~2% by mass is preferred, and is 0. 01 to 1% by mass is more preferable. If the amount added is less than 0. When the amount of addition is 0.001% by mass, the effect of addition is not sufficiently exhibited. When the amount of addition exceeds 2% by mass, precipitation or insoluble matter occurs. The nonionic surfactant is a surfactant of a polyoxyethylene, polyoxypropylene, polyoxybutylene, polyglycidyl group, and sorbitan as a nonionic hydrophilic group, and specific examples thereof include polyoxyethylene. Alkane ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene-polyoxypropylene glycol, polyvalent alcohol fatty acid partial ester, polyoxyethylene polyvalent alcohol fatty acid partial ester, polyoxyethylene fatty acid ester, polyfluorene glycerin fatty acid ester, Fatty acid diethanolamine, triethanolamine fatty acid partial ester. The anionic surfactant is a carboxylate, a sulfate, a sulfonate or a phosphate salt. The representative is a fatty acid salt, an alkylbenzenesulfonate, an alkylnaphthalenesulfonic acid salt, an alkylsulfonate, and a- Olefin sulfonate, dialkyl sulfosuccinate, α-sulfonated fatty acid salt, Ν-methyl-Ν-oleyl taurine, petroleum sulfonate, alkyl sulfate, sulfated fat, polyoxygen Vinyl ether ether sulfate, polyoxyethylene alkyl phenyl ether sulfate, polyoxyethylene styrenated phenyl ether sulfate, alkyl phosphate, polyoxyethylene vinyl ether phosphate, naphthalene sulfonate formaldehyde condensation-31 - 200930540 Things and so on. Examples of the cationic surfactant include an amine salt, a quaternary ammonium salt, and a pyridine gun salt, and examples thereof include a first to third aliphatic amine salt and a fourth-order salt (tetraalkylammonium salt, trialkylbenzylammonium salt, Alkyl pyridyl salt, alkyl imidazole gun salt, etc.). The amphoteric surfactants are carboxybetaine, sulfobetaine, etc., N-trialkyl-N-carboxymethylammonium betaine, N-trialkyl-N-sulfoalkylammonium betaine, and the like. Further, the fluorine-based surfactant is an interfacial surfactant having a fluorocarbon chain as a water-repellent group. (Peel-Promoting Agent) Further, a peeling accelerator for reducing the load at the time of peeling may be added to the blending liquid. The surfactant is effective for the surfactant, and is a phosphate, sulfonic acid, carboxylic acid, nonionic or cationic system, but is not limited thereto. Such a peeling accelerator is described, for example, in JP-A-61-243 83, 〇, and the like. A polyethoxylated phosphate ester is disclosed as a release accelerator in Japanese Patent Publication No. 5-7-500833. It is disclosed in JP-A-61-69845 that a non-esterified hydroxyl group is a mono- or di-phosphate of a free acid form, and can be quickly peeled off by adding it to a cellulose ester. Further, Japanese Laid-Open Patent Publication No. Hei 1-199847 discloses that a phosphate compound containing a non-esterified hydroxyl group and a propylene oxide chain and inorganic particles are added, whereby the peeling load can be reduced. (Other additives) In addition, thermal particles such as kaolin, talc, diatomaceous earth, quartz, sulfuric acid-32-200930540 bismuth, titanium oxide, aluminum oxide, etc., and alkaline earth metal salts such as calcium and magnesium may be added. Agent. Further, antistatic agents, flame retardants, slip agents, oil agents, and the like are sometimes added. The method for producing an anti-glare film of the present invention comprises a step of preparing a blending liquid (dissolution step), a flowing step, a drying step, and a winding step. [Dissolution Step] In the method for producing an anti-glare film of the present invention, in the case where the polymer film is a cellulose ester film, first, the dissolution of the cellulose ester is a stirring dissolution method generally used in a dissolution pot. a method of heating, stirring, and dissolving at a temperature above the boiling point of the solvent at a normal pressure of the solvent and at a temperature at which the solvent does not boil under a pressure, a method of heating and dissolving, a method of supersonic dissolving, and the like, since the so-called gel, It is better to have a blocky undissolved matter of the dough. In addition, the method of cooling and dissolving described in JP-A-9-9553, or the method of dissolving under high pressure described in JP-A No. Hei 1 1 - 2 1 3 79 can be used. A method in which a cellulose ester is mixed with a poor solvent to wet or swell, and then mixed with a good solvent is preferably used. In this case, means for mixing or swelling the cellulose ester with the poor solvent and a device for mixing and dissolving with the good solvent may be separately provided. The type of the pressurized container used for dissolving the cellulose ester is not particularly limited, and if it can withstand the specified pressure, it can be heated and stirred under pressure. In the pressurized container, a gauge such as a pressure gauge or a thermometer may be appropriately disposed. The pressurization may be carried out by a method of pressurizing an inert gas such as nitrogen gas or by increasing the vapor pressure of the solvent -33-200930540 by heating. It is preferable that the heating is performed externally, for example, the casing type is easy to control the temperature and is preferable. The heating temperature of the solvent to be added is not less than the boiling point of the solvent to be used, and in the case of two or more kinds of mixed solvents, it is preferable to heat the temperature at a temperature higher than the boiling point of the solvent having a lower boiling point and to be in a temperature in which the solvent is not boiling. If the heating temperature is too high, the necessary pressure becomes large and the productivity is deteriorated. Preferably, the heating temperature is in the range of 20 to 120 ° C, more preferably 30 to 1001, and still more preferably in the range of φ 40 to 80 ° C. Again, the pressure is adjusted at the set temperature until the solvent does not boil. In addition to the cellulose ester and the solvent, an additive such as a plasticizer or an ultraviolet absorber as needed is a solvent which is previously mixed with a solvent, dissolved or dispersed, and then put into a solvent before dissolution of the cellulose ester, or a mixture of the cellulose ester dissolved therein. can. After the cellulose ester is dissolved, it is taken out from the container while being cooled, or extracted from the container by a chestnut or the like, and cooled by a heat exchanger or the like to supply a blended liquid of the obtained polymerized material to a film, and the cooling temperature at this time. It can also be cooled to room temperature. The particle diameter d of the cellulose ester as a raw material is 0. The particle of 1 mm S dS 20 mm is composed of a ratio of 60% by mass or more, and since agglomerates of cellulose ester do not occur and good solubility can be obtained, it is preferable. ' The mixture of the raw cellulose ester and the solvent is dissolved in a dissolving pot with a stirrer. At this time, the peripheral speed of the stirring wing is at least 〇. 5 m / sec or more, and it is better to stir and dissolve for more than 30 minutes. In the process of the present invention, the cellulose ester blend dissolved in the pot is dissolved, pumped to a filter, and filtered in a filter. This filtration can be carried out according to the usual method of -34-200930540, but the solvent is heated at a temperature above the boiling point of the normal pressure and the temperature of the solvent is not boiling, and the pressure is heated under pressure to make the differential pressure before and after the filter material (below , called the filter pressure) rises small, preferably. In the method of the present invention, the cellulose ester blending liquid must be an impurity which is different from the image recognition by filtering to remove impurities, particularly in a liquid crystal image display device. The quality of the protective film for a polarizing plate can also be determined by this filtration. 0 The filter material used for filtration is preferably one with a small absolute filtration accuracy. However, if the absolute filtration accuracy is too small, the pores of the filter material are likely to clog, and frequent replacement of the filter material may cause a problem of reduced productivity. Therefore, in the method of the present invention, the filter medium used in the cellulose ester blending solution has an absolute filtration precision of 0. Those below 020mm are preferred. The filter paper may, for example, be No. of Anji Filter Paper Co., Ltd., which is a commercial product. 244 and 277, etc., and are preferably used. The material of the filter material is not particularly limited, and a normal filter medium can be used, and a filter material made of a plastic fiber such as ruthenium polypropylene or Teflon (registered trademark) and a metal filter material such as stainless steel fiber are not detached from the fiber, and the like. good. The preferred temperature range for the blending solution is 45 to 120 ° C, more preferably 45 to 70 ° C, and more preferably in the range of 4 5 to 5 5 ° C. The filtration pressure is preferably 3 500 kPa or less, more preferably 3,000 kPa or less, and more preferably 2,500 kPa or less. In addition, the filtration pressure can be controlled by appropriately selecting the filtration flow rate and the filtration area. The blended liquid thus obtained is stored in a storage tank, defoamed, and used for flowing. In this way, in the dissolving pot, pre-mixing to form the functional zone material and the fiber and the solvent to prepare the blending liquid, usually, it is not necessary to add the functional zone material to the pipeline. However, all or a portion of the functional zone forming material may be mixed in the pipeline as needed. For example, a fine particle dispersion which is mixed or dispersed in a suitable solvent in a dissolving pot is pumped to a filter and filtered in a filter. The resulting mixture is stored in a second storage tank and defoamed. a cellulose ester solution (〇 or a mixture solution) transferred from a first storage tank by means of a pump in a conduit, and a functional zone material solution (microparticle dispersion) transferred from a second storage tank by means of a pump in a conduit Liquid), confluence with a confluence tube. In front of the merging pipe, a filter is disposed, for example, a block or a large impurity generated by the path accompanying the exchange of the filter material can be removed from the fine particle dispersion or the mixed solution in the liquid. Here, a metal filter having solvent resistance is preferably used. From the viewpoint of durability, the filter material is preferably made of metal, particularly stainless steel. From the viewpoint of pore clogging, it has a porosity of 60 to 80%. It is preferable to filter the metal filter material having an absolute filtration accuracy of 30 to 60/z m and a porosity of 60 to 80%, so that it is possible to remove coarse impurities for a long period of time. For the metal filter material having an absolute filtration accuracy of 30 to 60/zm and a porosity of 60 to 80%, for example, NF-10 of the Fine Pore NF series manufactured by Nippon Seisakusho Co., Ltd., NF-12, and NF-13 can be cited. Since the two liquids merged as described above are transferred in a layered manner in the catheter, it is difficult to mix them as they are. Then, after the two liquids are combined, they are transferred to the next step while being thoroughly mixed by a mixer (19) of a line mixer. -36- 200930540 A line mixer which can be used in the present invention, for example, a Static Mixer SWJ (East Mine Static In-Tube Mixer, Hi-Mixer, manufactured by Toray Engineering) is preferred. [Flowing Step] Fig. 1 is a schematic flow chart showing an apparatus for manufacturing an anti-glare film using a forming surface of a casting roll for carrying out the method of the present invention, and Fig. 1a is a schematic side view of the entire 0, and Figure lb is the same as the main Partial floor plan. Referring to FIG. 1a, the blending liquid prepared by dissolving the pot is fed to the rogue mold (1) via a conduit, and is in a flowing position on the support body (2) which is infinitely transferred, for example, a slewing drive stainless steel endless belt. The step of mixing the flowing stream by the rogue mold (1). In the present invention, the flowing mold (1) is preferably a press mold which can adjust the slit shape of the nozzle portion and which is easy to make the film thickness uniform. The flowing mold (1) preferably has an angle of 40 to 90° with respect to the surface of the inner slit wall and the surface of the support (2), and particularly preferably 60 to 75°. The gap between the die lip of the flow mold (1) and the surface of the support (2) is separated by 0. The gap between 2~10ΙΠ1» is set to be better, and more is 0. A gap of 5 to 5 mm is more preferable. The gap of the slit of the flow mold (1) is 〇. 〇5~1. 5 mm is preferred, and 〇15~1.  Omm is better. Secondly, the surface roughness Ra of the rogue support (2) is 〇. 〇〇01~1 ym, with 0. 0003 ~0. 1//m is better and is 0. 0005 ~0. 05/zm is better. Membrane having a rotary drive endless belt as an illustration of the support (2) - 37- 200930540 In the apparatus, the belt support (2) is disposed between a pair of drums and the middle thereof, and the endless belt support body (2) The upper transition portion and the lower transition portion are each composed of a plurality of support rollers (not shown) supported on the back side. Further, one of the both ends of the endless belt support (2), or both drums, is provided with a driving device that applies tension to the belt support (2), and thereby the belt support (2) is It is used in a state of being pulled apart by tension. In the case where the endless belt is used as the support (2), the belt temperature at the time of film formation is from 0 ° C to the boiling point of the solvent at a normal temperature range, and is 5 ° C to the boiling point of the solvent - 5 ° C. The range is better. At this time, the ambient atmosphere humidity must be controlled above the dew point. Moreover, the conveying speed of the support (2) is 1 〇m/min or more, and the flow film which is formed in the lip of the rogue mold (1) is suppressed from being decompressed to mix air, and is formed into a horizontal section in the width direction of the film. The flow of the stripe is sticky, and a decompression chamber is provided on the upstream side of the rogue mold (1), and a pressure of 10 to 600 Pa is preferable, and more preferably 10 to 200 Pa. The gap between the lower end surface of the decompression chamber and the surface of the support (2) is 0. In the range of 5 to 5 mm, the suction air volume is not excessively large, and it is preferable to suppress the occurrence of a dry film in the blending liquid at the lip end portion of the flowing mold (1). Further, in order to increase the film forming speed, two or more pressurized weir molds (1) are provided on the flow support member (2), and the amount of the mixed liquid may be divided and the film may be formed by overlapping. When the blend liquid flows on the support (2), it is controlled so as not to reach the boiling point of the solvent used for dissolving the polymer of the raw material, and the mixed solvent is preferably controlled to a boiling point temperature of the boiling point solvent of -38 to 200930540. In the method of using the endless belt as the support (2), on the support (2), the coil (the film containing the residual solvent after the flow of the blend on the support is referred to as a coil) (10) is dried and cured to be The strength of the film which can be peeled off by the peeling roll (3) on the support (2), so that the amount of residual solvent in the coil (10) is preferably dried to 150% by mass or less, and more preferably 80 to 120%. . Further, it is preferable that the temperature of the coil when the coil (10) is peeled off from the support (2) is 0 ❹ to 30 °C. Further, immediately after the coil (10) is peeled off from the support (2), the temperature is temporarily lowered rapidly due to evaporation of the solvent from the side of the support surface of the support (2), and the volatiles such as water vapor and solvent vapor in the atmosphere are volatile. The composition is easily concentrated, so that the temperature of the coil at the time of peeling is preferably 5 to 30 °C. Here, the amount of residual solvent is represented by the following formula. The amount of residual solvent (% by mass) = {(M - N) / N} x 100 where Μ is the mass of the coil at any time, and N is the mass of the mass Μ material dried at 〇 11 〇 °c for 3 hours. [Solvent evaporation step] The blended film (coil) formed from the blended liquid flowing on the endless support (2) is heated on the support (2), and the solvent is evaporated to the support (2). The step of peeling off the web by the peeling roll (3). The solvent is evaporated, and there is a method of blowing air from the side of the coil, and/or a method of transferring heat from the inside of the support body (2) by heat transfer from the surface by radiant heat. -39- 200930540 [Peeling step] In the method of using the endless belt in the support (2), the peeling tension when the support (2) and the coil (10) are peeled off by the peeling roll (3) is usually 20 - 25 kg /m is peeled off, but the cellulose ester film produced by the present invention which is thinner than before is not wrinkled by the coil (1〇) when peeled off, and the minimum tension of peelable is ~1 7 kg/m. It is preferable to carry out the peeling and preferably to peel off at a minimum tension of ~1 4 kg / m. [Step of Forming Concavity and Concavation] Next, referring to Fig. 1a and Fig. 1b, the method for producing the antiglare film of the present invention is a blending solution (resin solution) in which a thermoplastic resin is dissolved in a solvent, and flowing from the flowing mold (1) to A coiled material (1 〇) on a rotary-driven stainless steel flow belt (support) having a smooth surface and a strip (1 〇) peeled off by a support roller (3) In the middle of the dry drying step, the mold processing roll (7) is pressed against the surface of the web (!), and an uneven surface is formed on the surface of the film via the opposite back roll (8). Thereafter, the web (10) is dried by a drying device (13) to form a thin film, which is taken up by a take-up roll (15). The concave-convex processed surface of the coil (10) can be appropriately selected from the air side (A surface) when flowing to the support (2), or the surface (B surface) connected to the support (2), but it is easy to process. In terms of sex and sentence, it is better to process on the B side. In the method of the present invention, the amount of the residual solvent in the coil (10) of the mold processing roll (7) is preferably from 1 to 70% by mass, preferably from 15 to 50% by mass. Here, in the table containing the amount of residual solvent (10), by drying the coil (10), the coil (10) is shrunk in the conveying direction, and the surface of the casting roll (7) is applied. The speed and the unevenness of the surface of the casting roll (7) cause minute damage to the surface of the coil and the direction of conveyance. The damage is suppressed in the coil (the amount of the solvent is 70% by mass or less. Further, if the amount of the residual solvent of the embossed material (1 〇) is too large, the coil (1 〇) is soft and easy, but it is liable to hang up and wrinkle. Fold, and depending on the situation, 10) break during transport. However, if the amount of residual solvent of the coil (10) is not %, it is necessary to have a large bending deformation via the back roll (8) in the uneven processing of the casting roll (7), and it is still prone to hoisting and smashing the film. The width is from 1 000 mm to 3 000 mm and the thickness is preferably 20. The casting roll (7) / back roll (8) may also have a mechanism as needed. The concave and convex shape can be controlled at an appropriate temperature. When the residual solvent amount of the coil (10) is 30% by mass or more, (7) / back roll (8) is heated to prevent the coil (1 〇) agent and other additives from being applied to the casting roll (7) / Back roll (8) The upper roll (7) / back roll (8) is suitable for the temperature of the roll (1 〇 solvent amount is different 'but preferably 1 〇 ~ 1 〇〇 ° C. Residual solvent amount is used When the temperature is light, the flatness is deteriorated. When the surface is formed into a concave and convex, and the surface has a relatively wide axis on the wide axis, the residual working time is rolled up, and the processing capacity of the coil (up to 10 mass pressure,折折。 ~ 200 β m Adjust the temperature, the mold roll will be volatilized during processing. If the residue of the mold is large, the temperature of the mold roll (7) / back roll (8) is The temperature-controlled heat medium in the roll is circulated and a metal heater is placed inside the roll to be controlled. In the present invention, the mold processing roll (7) for forming the uneven surface can be appropriately selected from those having a fine shape and a thick shape, and a concave or convex portion formed by a part of a spherical surface can be used as a bottom plate shape or a lenticular lens shape. The molds forming the prismatic irregularities are regularly aligned or randomly arranged. 0, for example, the convex portion or the concave portion has a diameter of 5 to 100 / / m and a height of 0. A concave portion or a convex portion formed by a part of a ball of 1 to 2/zm may be combined with large irregularities and small irregularities. When the concavo-convex processing is performed in a state in which the amount of residual solvent is present in the film, it is assumed that the film is dried after the processing to cause a film shrinkage amount in the conveyance direction/wide axis direction/thickness direction, and is selected to become a desired film concavity after dry winding. The shape of the shape of the casting roll (7). When the width is stretched by the tenter before or after the unevenness is processed, and when the conveyance direction is stretched, it is necessary to select the shape of the surface of the mold roll (7) by making the appropriate shape of the film as follows. In the case where the film stretching after the uneven processing is greatly different in the wide axis direction and the conveying direction, the thickness and the pitch of the casting roll (7) may be different in the direction of the connecting direction and the direction of the axis. Further, in the case where the hard coat layer and the antireflection layer are applied after the unevenness is formed, the surface of the mold roll (7) which reduces the uneven shape of the uneven hole by coating is selected. The surface roughness of the finished film is 0. The average roughness (Ra) specified in JIS B 060 1 is 0.  1~1. 5 // m, spacing (Sm) is 5~100 # m is better -42 - 200930540 The casting rolls (7) and back rolls (8) can be made of metal, carbon steel, aluminum alloy, titanium alloy, ceramic, Glass, hard rubber or these composite materials, etc., but the strength of the strength and ease of processing, the casting roll (7) is preferably metal. In particular, the ease of cleaning is also important, using a stainless steel or hard chrome-plated casting roll (7, the surface can also be water repellent or water repellent processing. f) forming the desired bump on the casting roll (7) Surface method, method, pulse laser method, mechanical method of electric discharge machining, chemical method such as etching method, and even mechanical method combining chemical method and chemical method for simultaneous blowing of reactive agent After the surface of the roll is coated, it is blown on the undried adhesive, the method of drying the fixed particles by the adhesive, the method of blowing the substance containing the fine agent to the roll, and the method of using the metal mold to the back roll (8) Use hard rubber, hard plastic or enamel or metal elastic roller. The casting roll (7) or the back roll (8) may be formed by either of them. As in the case of the present invention, when the residual film is processed, since the conveying direction of the film is shrunk, it is preferable to use the moving speed. Further, the eccentricity of the casting roll (7) and the back roll (8) is preferably 5 Å/z, and more preferably 20 " m, and particularly preferably 〇~5//m. The diameter of the casting roll (7) is preferably 5 to 200 cm, and more preferably 100 cm is more preferably 1 to 50 cm. , stainless steel, plastic, plastic, and durability. The sandblasting method, quality and honing method can also be used. The microparticle rear and the bonded bismuth metal roller are controlled by a light force or a thin force of a solvent to drive the inside of the metal to 1 〇~ -43- 200930540. The roll pressure when forming the unevenness is 200 to 50000 N/m'. 5 00 to 3 000 ON/m is appropriately determined in consideration of the type of the thermoplastic resin, the shape of the unevenness formed, the temperature, and the like. Next, the method for producing the anti-glare film of the present invention is such that the coil (1〇) in the upstream side of the coil processing direction of the mold processing roll '(7) conveys the tension - on the left and right sides of the coil (10) The ends are adjusted to be different from each other. Generally, the coil (1〇) containing the residual solvent amount is soft on the surface of the coil, and the surface workability is excellent. However, when the coil (1 〇) is pressed to the casting roll (7), the coil (10) is used. Suspension and wrinkles are prone to occur. The lifting and wrinkling of the coil (10) is a non-uniformity in the width direction of the coil material during transport, and a slight left-right deviation of the conveying device such as a roller row or a dry wind at the time of drying. Wind speed difference and temperature difference occur. The left and right deviation of the equipment is reduced as much as possible even during the installation of the production equipment, and the change in temperature due to the repeated temperature changes at the beginning and end of the production causes a change in time, which is extremely difficult to maintain for a long period of time without lifting and wrinkling. Folded state. In the present embodiment, the transport tension of the coil (10) is measured on the upstream side of the coil processing direction of the mold processing roll (7), and as a result, the web conveyance tension adjusting mechanism is obtained. In the operation, the difference between the measurement of the web transport tension at the left and right ends of the coil is reduced to an allowable range, and the occurrence of lifting and wrinkles can be suppressed. Specifically, the web (1 〇) peeled off from the support (2) by the peeling roll (3) is conveyed to the mold processing roll (7) via the guide roll (4), and the mold processing roll (7) In the upstream side of the coil conveying direction, a roll-44 - 200930540 material conveying tension adjusting mechanism that adjusts the conveying tension of the coil to the left and right end portions of the coil is provided, and is disposed on the same side as the left and right independent The tension meter (9A) (9B) for measuring the tension of the coil conveyance is preferably 1 to 5%, preferably 1 to 5%, of the tension of the web conveyance tension at the left and right ends of the tension meter (9A) (9B). For 2~4. 5%-like, micro-motion adjustment of the coil conveyance tension adjustment mechanism. That is, the right and left tensions before the concavo-convex processing of the coil (10) are independently measured left and right by the tensiometer (9A) (9B) shown in Figs. 1a and 1b, and are passed through the film guiding device on the upstream side ( 1 1) When the roller of (1 2) moves to the left or right, the tension meter (9A) (9B) can be adjusted to the desired level. In Fig. 1 a and Fig. 1 b, the right end portion (5a) (6a) of the two transport tension adjusting rollers (5) (6) arranged in a plurality of intervals at the upper and lower intervals is used as a base point, so that the same left end portion (5b) (6b) Shake back and forth separately to adjust. Next, for example, on the rear side of Fig. 1a and Fig. 1b, if the right end portion (5a) of the lower roller (5) serves as a base point, the left end portion (5b) of the same roller is rocked in front, and the left end portion of the same roller (5b) is pressed to the left end portion of the conveying coil (10), so that the film conveying tension is increased in this portion. On the other hand, on the front side of FIGS. 1a and 1b, if the right end portion (6a) of the upper roller (6) serves as a base point and the left end portion (6b) of the same roller is rocked in the front, the left end portion (6b) of the same roller When the pressure is applied to the left end portion of the conveyance coil, the film conveyance tension is increased in this portion, so that the conveyance tension of the left end portion of the conveyance coil (10) and the conveyance tension of the same right end portion can be opposite to each other. Different changes. Further, in the method of the present invention, when the concave shape is formed by the casting processing roll (7), the contact time of the film with the casting processing roll (7) is 2. 5χ1 (Γ3~-45- 200930540 1.  Leap seconds are better. That is, when the packaging time and packaging time of the film and the casting roll (7) are large, hoisting and damage are liable to occur, and in the case of the hour, the workability is deteriorated, and the appropriate packaging time and packaging time are present. According to the method of the present invention, slings, wrinkles, and minute damage on the surface do not occur. It is possible to produce an anti-glare film which is excellent in planarity and which reduces surface sparkling and impurity barriers under high productivity. Fig. 2 is a side elevational view showing the principal part of a second embodiment of the apparatus for forming a concave-convex surface using a film tension adjusting mechanism and a casting roll (7) for carrying out the method of the present invention, and for a back roll (8) 2 Root casting roll (7Α) (7Β). The number of the embossed casting rolls (7) may be one. However, if a plurality of casting rolls (7) are used, the uniformity of the concavities and convexities is increased, and a complicated concave-convex shape can be easily obtained. In addition, when a plurality of casting rolls (7 inches) (7 inches) are used, it is possible to easily control the anti-glare characteristics and the sharpness of the image by using a mold roll (7Α) (7Β) having different surface irregularities. White blur and sparkle on the surface of the film are reduced. Thus, when two casting rolls (7Α) (7Β) are used for one back roll (8), the position of the casting roll (7 A ) ( 7B ) is set to 1 with respect to the center of the back roll ( 8 ). At the position of 80°, it is not easy to cause unevenness of the unevenness due to the bending of the back roll (8), so that it is preferable. Fig. 3 is a side elevational view showing a principal part of a third embodiment of the apparatus for forming a concave-convex surface using a film tension adjusting mechanism and a casting roll (7) for carrying out the method of the present invention, using four castings for one back roll (8). Roller (7 A ) ( -46-

200930540 7B) ( 7C ) ( 7D ). When 7A) ( 7B ) (7) is used for one back roll (8), if the position of the mold roll (7A) (7D) is set to the position of the center of the back roll (8), it is not easy to back. It is preferable that the roll (8) is formed by bending. Fig. 4 is a view showing a fourth embodiment of the apparatus for forming a concave-convex surface using a film and a casting roll (7) for carrying out the method of the present invention, wherein the forming roll (7) is formed with a concave-convex 10; The entire circumference of the type processing roll (7) is about a film (coil) (1 〇) long for the mold processing roll (7). That is, the film (coil) (10) and the mold roll and the packaging time are appropriate, so that the lifting and damage of the ink can be prevented. Fig. 5 is a view showing a fifth embodiment of the method of forming a concave-convex surface using a film for carrying out the method of the present invention and a casting roll (7), and a plurality of sets of casting J rolls (8) may be disposed at one place. As shown in the figure, one set of casting rolls (7) and two sets are used. Thus, if a plurality of casting rolls (7) are used, the bevels of the casting rolls (7) are randomly formed and can be easily convex. Fig. 6 is a mold having a method for carrying out the method of the present invention: using four casting rolls ((7B) (7C) [on the front and rear sides: unevenness of unevenness; tension adjusting mechanism: application form, at this time] , so that the coil (1/3 surface, so that the contact time is increased (7) when packaging, and the processing tension adjustment mechanism is applied, in this type of roller (7) and back 1 back roller (8) Further, a more complicated, complicated concave light (7) can be formed, and a flow chart of another anti-glare film manufacturing apparatus for forming a concave-convex surface device according to the embodiment is shown, and FIG. 6a is an overall side view of the outline. Fig. 6b is a plan view of the same main part. In the sixth embodiment, the tension meter (9A) (9B) and the film guiding roller (11) (12) are placed on the casting processing roll (7) and the back roll (8). In the second embodiment to the sixth embodiment of the present invention in the above-described FIGS. 2 to 6 , in the present invention, the coil of the mold processing roll (7) is transported. In the upstream side of the direction, the transport tension of the coil (1 〇) is independently measured, and according to the result, the tension of the coil is adjusted. When the mechanism is operated and the measurement of the web conveyance tension at the left and right end portions of the coil is as small as the allowable range, the occurrence of lifting and wrinkles can be suppressed as in the case of the first embodiment. In the second embodiment to the sixth embodiment of the present invention, the transporting of the coil (10) is provided on the upstream side of the coil processing direction of the mold processing roll (7). The tension conveyance tension adjustment mechanism which adjusts the tension to the left and right ends of the coil (10), and the tension meter (9A) (9B) which is a means for independently measuring the tension of the coil conveyance is provided on the same side. According to the tension meter (9A) (9B), the measurement of the web transport tension at the left and right end portions of the tension meter is 1 to 5%, preferably 2 to 4.5%, and the coil moving tension adjusting mechanism is finely adjusted. In other words, the left and right tensions before the uneven processing of the coil (1 inch) are independently measured by the tension meter (9A) (9B), and the rolls of the film guiding device (11) (12) located on the upstream side thereof move left and right. Then adjust the tension meter (9A) (9B) to the desired level. -48- 200930540 The right end portion (5〇(6a) of the two transport tension adjusting rollers (5) (6) arranged at a plurality of intervals in the upper and lower intervals is used as the base point, so that the same left end portion (5b) (6b) Then, the adjustment is performed by shaking back and forth. Next, if the right end portion (5 a ) of the roller ( 5 ) in the lower side of the rear side is used as the base point, and the left end portion (5b) of the same roller is rocked in the front, the left end portion of the same roller (5b) The pressure is applied to the left end of the transporting web (10), so that the film transport tension is increased in this portion. On the other hand, if the front end of the roll (D 6) of the preceding stage is the base point, When the left end portion (6b) of the same roller is rocked in the front, the left end portion (6b) of the same roller is pressed to the left end portion of the conveying paper, so that the film conveying tension is increased in this portion, so that the conveying paper can be transported ( 10) The transport tension at the left end portion and the transport tension at the right end portion are changed so as to be different from each other. Fig. 7 is a schematic flow chart of still another anti-glare film manufacturing apparatus for carrying out the method of the present invention, using a drum as a support (22), Fig. 7a is a schematic side view, and Fig. 7b is a side view The main part of the floor plan. As described above, the uneven surface forming apparatus used in the present invention can be applied not only to the apparatus using the flow band, but also to the apparatus using the flow drum (22). In this case, a casting roll (7) for forming an uneven surface and a back roll (8) opposed thereto are also disposed. In the same figure, in the same manner as above, a blending solution (resin solution) in which a thermoplastic resin is dissolved in a solvent is prepared, and the blending liquid is passed through a pressurized type quantitative gear pump and sent to a flowing mold (1) in a flowing position. The blending liquid flows from the -49-200930540 flowing mold (1) to the hard chrome-plated drum support (22). 'Get the coil (10) 'The coil (10) is the rotation through the drum support (22) And about 3/4 weeks of movement, peeling off with a peeling roll (3). In the case where the drum is used as the support (22), the temperature of the drum support (22) is 'dry-cured on the drum support (22) until the film strength of the web (1) can be peeled off from the support (22). Cooling to below lOt is preferred, and cooling to below 〇 ° C is more preferable, and cooling to -1 (the following is better than TC. The blending liquid on the surface of the drum is to increase the strength of the gel film by cooling gelation. (film strength), and the strength (film strength) of the gel film can be increased by promoting drying between stripping. Next, the amount of residual solvent supported by the coil (10) is 10 to 250% by mass. It is preferable that the state is peeled off in a state of 20 to 220% by mass, and if the amount of the residual solvent is more than 250% by mass, peeling of the thermoplastic resin occurs on the support (22). (22) The peeling tension at the time of peeling off from the coil (10) is preferably 0.1 to 6 kg/m. Further, in the embodiment of Fig. 7, the downstream of the coil processing direction of the mold processing roll (7) On the side, the transport tension of the coil (10) is independently measured on the left and right sides, and according to the result, the volume is When the conveyance tension adjusting mechanism is operated and the measurement error of the web conveyance tension at the left and right end portions of the coil is reduced to the allowable range, the occurrence of lifting and wrinkles can be suppressed as in the case of the first embodiment described above. In the drawings, the same reference numerals are attached to the same parts. [Tramer Stretching Step] -50- 200930540 Next, although not shown, before or after the embossing is formed as described above, If necessary, the web (10) is subjected to a stretching process in the direction of the wide axis or the direction in which the web is conveyed. The image shows a film for the member, and the two side edges of the web (or film) (10) are clipped. The tenter type such as the fixed stretcher is known, and it is preferable because the flatness and the dimensional stability can be improved. In particular, in the drying step after the support (2) is peeled off, the coil is caused by the evaporation of the dissolved Q agent. (or the film) shrinks in the direction of the broad axis. The more dry at a high temperature, the greater the shrinkage. The shrinkage is suppressed as much as possible and dried, so that the planarity of the finished film is good and good. The method of using a tenter is, for example, dried The step of all or part of the step of holding the both ends of the width of the coil with a clip in the wide axis direction and drying is preferably performed. The amount of residual solvent is 10 to 100% by mass at 80 to 130 ° C. And/or when the amount of the residual solvent is 5 to 1% by mass, when it is held at 90 to 150 ° C, if the width is maintained by a drawing frame or the stretching of the film width is about 1 to 20 %, for example, the height is raised. The cellulose ester film has a large planar effect and is particularly excellent. Further, it is preferable that the difference in tension between the webs (10) before and after the tenter in the transport direction is 8 N/mm 2 or less. (10) Preheating step of preheating, after this preheating step, 'the stretching step of stretching the coil (10) by using a tenter dryer, and after the stretching step, the coil (1 〇) The tempering step of mitigating only a part of the stretching amount of the stretching step, and the temperature T1 in the preheating step and the stretching step is (the glass transition temperature Tg-6(rc) of the film is higher than 200930540, Further, it is preferable that the temperature T2 in the relaxation step is (T1 ° C - l 〇 ° C ) or less. In particular, the ratio of the elongation of the web (10) of the above-mentioned stretching step is 0 to 30% with respect to the width of the web before entering the stretching step. On the other hand, the web of the easing step is desired. The elongation rate of (10) is -10 to 10%. In the stretching step of the tenter device, for example, the elongation ratio at the time of producing the cellulose ester film is 1.01 to 3 times Torr, preferably 1.5 to 3 times, with respect to the film forming direction or the broad axis direction. When stretching in the biaxial direction, the stretching side at a high magnification is 1.01 to 3 times, preferably 1 to 5 to 3 times, and the stretching ratio in the other direction is 0.8 to 1.5 times, preferably 0.9 to 1.2 times. Pull. Such width-maintaining or lateral stretching of the manufacturing step is preferably carried out by a tenter device, and may be either a tenter or a tenter. In addition, in the stretching step of the tenter device, the warm air (24) is blown in from the front portion of the bottom portion of the tenter device, and the wind (24) is discharged from the rear portion of the tenter of the tenter device to make the coil (10) At the same time, it is stretched and dried. ❹ [Drying step] After the stretching step of the tenter device (not shown), for example, as shown in Figs. 1, 6, and 7, the drying device (13) is preferably provided. In the drying device (13), the plurality of conveying rollers (14) which are arranged in a staggered manner on the side cause the coil (1 〇) to meander, and the coil (10) is dried. Further, the film transporting tension of the drying device (13) is preferably 30 to 250 N/m, depending on the physical properties of the blending liquid, the amount of residual solvent during peeling and the film transporting step, and the temperature of the drying device (13). It is preferably 60 to 150 N/m. -52- 200930540 80~120N/m is the best. Further, the means for drying the web (or film) (1 〇) is not particularly limited. Generally, it is carried out by hot air, infrared rays, heating rolls, microwaves or the like. It is preferable to use hot air drying in terms of simplicity, for example, by blowing the warm air discharged from the rear portion of the bottom portion of the drying device (13') and the lower portion of the drying device (13). The drying temperature is preferably 40 to 160 ° C, and it is preferably 50 to 160 ° C in planarity and good dimensional stability. 0 The steps from flowing to drying are carried out under an air atmosphere, and may also be carried out under an inert gas atmosphere such as nitrogen. At this time, of course, the dry atmosphere is carried out in consideration of the critical concentration of the explosion of the solvent. The web conveying tension at the time of drying is 30 to 300 N/width m, and more preferably 40 to 270 N/width m. After the end of the drying, the cutter is cut off before the winding, and it is preferable to obtain a good roll posture. Q [embossing step] Next, it is preferable that the polymer film which has been subjected to the transport drying step is subjected to embossing of the film by an embossing device before the introduction of the winding step. Here, the height h (μηι) of the embossing is set to a range of 0.05 to 0.3 times the film thickness τ, and the width W is set to be in the range of 0.005 to 0.02 times the film width L. For example, when the film thickness is 40# m and the film width is 100 cm, the thickness of the embossing 31 is 2 to 12/zm, and the embossing width is set to 5 to 3 mm. Embossing can also be formed on both sides of the film. At this time, the height of the embossing -53 - 200930540 hi + h2 (Am) is set to a range of 0.05 to 0.3 times the film thickness T of the film, and the width W is in the range of 0.005 to 0.02 times the film width L. For example, when the film thickness is 40 /zm, the height hl+h2 (#m) of the embossing is set to 2 to 12 μm. It is preferable that the embossing width is set to 5 to 30 mm. • [Winding Step] The film of the dried film (20) is taken up by the winding device (15) to take the basic roll of the anti-glare film. When the amount of the residual solvent of the film (20) to be dried is 0.5% by mass or less, preferably 0.1% by mass or less, a good film having dimensional stability can be obtained. If the film winding method is a general winding machine, a method of controlling the tension such as a constant torque method, a constant tension method, a tapered tension method, or a program tension control method with a constant internal stress can be used. Just use it. The joining of the film to the take-up core (core) can be carried out on either side or on one side. The film thickness of the anti-glare film of the present invention varies depending on the purpose of use. However, from the viewpoint of thinning of the liquid crystal display device, it is preferable that the film has a thickness of 10 to 150 /im, and it is 20 to 1 Å. The range is better, especially in the range of 25~80" m. If the film thickness of the film is too thin, it may be impossible to obtain, for example, a required strength as a protective film for a polarizing plate. If the film thickness of the film is too thick, the superiority of the film formation of the previous cellulose ester film becomes insufficient. Adjusting the thickness of the film to control the concentration of the blending solution, the amount of liquid to be pumped, the slit gap of the nozzle of the flowing mold, the pressure of the flowing mold, the pressure of the flowing mold, the speed of the support body, etc. It is better. Further, it is preferable that the means for making the film thickness uniform is to use the film thickness detecting means to feed back the programmed feedback information to the respective devices. In the step of flowing from the flow of the solution flowing film forming method to drying, the atmosphere in the drying device may be made air, or may be carried out under an inert gas atmosphere such as nitrogen gas or carbon dioxide gas. However, it is of course necessary to always consider the critical danger of explosion of evaporating solvents in dry atmospheres. Φ The antiglare film of the present invention is useful for a liquid crystal display member in terms of good moisture permeability, dimensional stability, and the like, and is particularly preferably used for a protective film for a polarizing plate. In particular, in the protective film for a polarizing plate which has strict requirements for moisture permeability and dimensional stability, the antiglare film of the present invention is preferably used. In general, when a cellulose ester film is used as a protective film for a polarizing plate, alkali is alkalized in order to form a good adhesion to a polarizer. The film and the polarizer after alkalization of the alkali are adhered by using an aqueous solution of polyvinyl alcohol as an adhesive. Therefore, if the contact angle of the alkali-treated Q of the cellulose ester film with water is high, it cannot be aggregated. Vinyl alcohol is bonded and is a problem as a protective film for a polarizing plate. When the cellulose ester film produced by the method of the present invention is used as a member for LCD, in order to reduce light leakage of the film, high planarity is required, and the center line average roughness (Ra) of the anti-glare film is defined by JIS B 0601. The measurement method may, for example, be a stylus method or an optical method. In the present invention, the cellulose ester film preferably has a center line average roughness (Ra) of 20 nm or less, more preferably 10 nm or less, and particularly preferably 4 nm or less. The polarizing plate is, for example, a protective film for a polarizing plate comprising an antiglare film produced by the method of the present invention at -55 - 200930540 on at least one side. The liquid crystal display device has the above-described polarizing plate on at least one side of the liquid crystal element. Next, a description will be given of such a polarizing plate and a liquid crystal display device using the polarizing plate. • Polarizers can be made in the usual way. The cellulose ester film of the present invention which is alkalized by an alkali is obtained by immersing a polyvinyl alcohol film in at least one side of a polarizer produced by stretching in an iodine solution, and adhering it using a fully alkalized polyvinyl alcohol aqueous solution. It is better. On the other hand, the cellulose ester film of the present invention can also be used, and other protective films for polarizing plates can be used. For the anti-glare film of the present invention, the protective film for polarizing plates used for the other side can be a commercially available cellulose ester. film. For example, a commercially available cellulose ester film is preferably KC8UX2M, KC4UX, KC5UX, KC4UY, KC8UY, KC12UR, KC8UY-HA, KC8UX-RHA, KC8UX-RHA-N (above, Konica-Minoltaopto Co., Ltd.), etc. . Alternatively, a film of a cyclic olefin resin other than the cellulose ester film, an acrylic resin, a polyester, or a polycarbonate may be used as the protective film for a polarizing plate. At this time, since the saponification is low in suitability, it is preferred to apply it to the polarizing plate through a suitable subsequent layer. In the polarizing plate, the antiglare film of the present invention is used as a protective film for a polarizing plate on at least one side of a polarizer. At this time, it is preferable that the retardation axis of the anti-glare film is substantially parallel or perpendicular to the absorption axis of the polarizer. This polarizing plate is preferably used as a polarizing plate in which a liquid crystal element of a horizontal electric field switching type is sandwiched between -56 and 200930540, and the cellulose ester film of the present invention is disposed on the side of the liquid crystal display element. The polarizer to be preferably used for the polarizing plate is a polyvinyl alcohol-based polarizing film which is dyed with iodine in a polyvinyl alcohol-based film and dyed with a dichroic dye. As the polyvinyl alcohol-based film, a modified polyvinyl alcohol-based film modified with ethylene is preferably used. The polarizer is formed by using a polyvinyl alcohol aqueous solution to form a film, and it is subjected to uniaxial stretching dyeing, or after uniaxial stretching after dyeing, it is preferred to carry out durability treatment with a boron compound. The film thickness of the polarizer is 5 to 40 / zm, preferably 5 to 30 / zm, and particularly preferably 5 to 20 / m. On the surface of the polarizer, the anti-glare film of the present invention is bonded to one side to form a polarizing plate. Preferably, it is bonded by a water-based adhesive containing, as a main component, a fully alkalized polyvinyl alcohol. Further, in the case of a resin film other than the cellulose ester film, it is processed through a suitable adhesive layer to a polarizing plate. Because the polarizer is stretched in the uniaxial direction (usually in the long axis direction), if the polarizing plate is placed in a high temperature and high humidity environment, the stretching direction (through the long axis direction) shrinks relative to the extension. The pull is extended in the vertical direction (usually in the wide axis direction). When the film thickness of the protective film for a polarizing plate is thinner, the expansion ratio of the polarizing plate is increased, and the amount of shrinkage in the stretching direction of the polarizing element is large. In general, the direction in which the polarizer is stretched is bonded to the flow direction ('MD direction) of the protective film for a polarizing plate. Therefore, when the protective film for a polarizing plate is formed into a thin film, it is particularly important to suppress the expansion ratio in the flow direction. The antiglare film of the present invention is excellent in dimensional stability and is suitable for use as a protective film for such a polarizing plate. The polarizing plate is formed by attaching a protective film to the other surface of the polarizing plate and bonding the insulating film to the reverse surface. The protective film and the release film are used for the purpose of protecting the polarizing plate during shipment of the polarized light-57-200930540, and during product inspection. The liquid crystal display device using the anti-glare film produced by the method of the present invention has excellent quality such as no unevenness on the screen. Since the polarizer is stretched in the uniaxial direction (usually in the long axis direction), if the polarizing plate is placed in a high temperature and high humidity environment, the stretching direction (usually the long axis direction) shrinks, relative to the stretching. Extends in the vertical direction (usually the broad axis direction). When the film thickness of the protective film for a polarizing plate is thinner, the expansion ratio of the polarizing plate 变 becomes large, and the amount of shrinkage in the stretching direction of the polarizing element is large. In general, the direction in which the polarizer is stretched is bonded to the flow direction (MD direction) of the protective film for a polarizing plate. Therefore, when the protective film for a polarizing plate is formed into a thin film, it is particularly important to suppress the expansion ratio in the flow direction. The antiglare film of the present invention is excellent in dimensional stability and is suitable for use as a protective film for such a polarizing plate. The polarizing plate is formed by attaching a protective film to the other surface of the polarizing plate and bonding the insulating film to the reverse surface. The protective film and the release film are used for the purpose of protecting the polarizing plate when the polarizing plate is shipped or during product inspection. 〇 (Liquid Crystal Display Device) A liquid crystal display device having excellent visibility can be produced by assembling a polarizing plate using the anti-glare film of the present invention to a liquid crystal display device. The anti-glare film of the present invention preferably uses a reflection type, a penetration type, and a semi-penetration

LCDs of various types of driving such as LCD, TN type, STN type, OCB type, HAN type, VA type (PVA type, MVA type), and IPS type. In particular, in a display device with a screen size of 30 吋 or more, especially for a large screen of 30 吋 to 5 4 ', there is no smear in the peripheral portion of the screen, and this effect can be maintained for a long period of time in the MVA-58-200930540 liquid crystal display device. See a significant effect. In particular, there are fewer spots, shimmers, and wavy spots, and even if it is appreciated for a long time, it has the effect that the eyes do not fatigue. As described above, the liquid crystal display device having the polarizing plate using the antiglare film of the present invention on at least one side of the liquid crystal element is excellent in display quality. EXAMPLES Hereinafter, examples of the present invention will be described, but the present invention is not limited thereto. Examples 1 to 9 (cellulose ester film 1) (Production of cerium oxide dispersion A)

Aerosil 972V (manufactured by Nippon Aerosil Co., Ltd.) 12 parts by mass (average particle diameter of primary particles: 16 nm, apparent specific gravity: 90 g/liter) Q 88 parts by mass of ethanol, the above materials were stirred and mixed with a dissolving rod for 30 minutes, and then homogenized. Dispersion was carried out to prepare a cerium oxide dispersion A. Then, in the cerium oxide dispersion A, 88 parts by mass of methylene chloride was introduced while stirring, and the mixture was stirred and mixed for 30 minutes with a dissolving rod to prepare a cerium oxide dispersion diluent A. (Production of the line addition liquid A) -59- 200930540 TINUVIN 109 (manufactured by Ciba Specialty Chemicals Co., Ltd.) 11 parts by mass of TINUVIN 171 (manufactured by Ciba Specialty Chemicals Co., Ltd.) 5 parts by mass of methylene chloride 100 parts by mass The container is sealed, heated while stirring, and 0 is completely dissolved' and filtered. In the above, 6 parts by mass of the above-mentioned cerium oxide dispersion diluent A3 was added while stirring, and after stirring for further 30 minutes, the cellulose acetate acrylate (acetate substitution degree 1.9, propyl ketone substitution degree 0.8) 6 The mass fraction was added while stirring, and after stirring for another 60 minutes, it was filtered with a polypropylene wind Catridge Filter TCW-PPS-1N of Advantech Toyo Co., Ltd. to prepare a line addition liquid a. (Preparation of Blend A) Q Cellulose Triacetate 1 part by mass (synthesized from cotton velvet, Mn = 95000, Mw = 323000, Mw/Mn = 3.4, acetal substitution 2.9) 5.0 parts by mass of a propane tribenzoate (aliphatic polyvalent alcohol ester) ethyl decyl ethyl glycolate 5.5 parts by mass of dichloromethane 44 0 parts by mass of ethanol 40 parts by mass - 60 - 200930540 Putting the above materials into a sealed state The container was stirred while being heated, and completely dissolved, and filtered using Angstrom filter paper No. 24 manufactured by Anji Paper Co., Ltd. to prepare a blend A. Next, for the filtered blend A1 00 parts by mass, 2 parts by mass of the filtered line addition liquid A was added, and thoroughly mixed with a line mixer (Early static type tube internal mixer Hi-Mixer, SWJ). Next, the belt-flowing device shown in Fig. 1 was used, and the flowing mold (1 ❹) was uniformly flowed on the stainless steel belt support (2) at a temperature of 35 ° C and a width of 1 800 mm. On the stainless steel belt support (2), the solvent was evaporated until the residual solvent amount was 100%, and the stainless steel belt support (2) was peeled off by the peeling roll (3). Next, while ejecting the stripped cellulose triacetate (10) at 40 ° C while evaporating the solvent, the casting roll (center line average surface roughness Ra; 1.5 km m, uneven pitch Sm) 20 em ) ( 7 ), in the formation of a concave-convex device composed of a back roll [a surface of a stainless steel roll wound with MC nylon (registered trademark) having a thickness of 10 mm] (8 Q ), a coil containing a solvent ( Ίο) clamped and touched the casting roll (7) on the B side of the coil (10) (the side connected to the support of the stainless steel strip as the B side and the opposite side as the A side), and at A The back side roller (8) is disposed on the surface side, and irregularities are formed on the B surface side by passing between the two rolls. The pressing pressure of the casting roll (7) with respect to the back roll (8) was 5000 (N/m), and a static eliminating electric wire was provided in the vicinity of the uneven portion to suppress charging of the film. Examples 1 to 9 were carried out by adjusting the difference in the amount of residual solvent of the coil (10) and the difference in left and right tension on the side of the coil (10). The difference in conveyance tension between the left and right end portions of the coil (10) is adjusted to the desired direction by the film guiding device (the angle of the changing roller with respect to the film conveying direction) provided on the upstream side of the casting roll-61 - 200930540 (7) . Here, in Examples 1 to 4, the difference in conveyance tension between the left and right end portions of the coil (10) was 2.4%, and in Examples 5 to 8, the difference in conveyance tension between the left and right end portions of the coil (1) was It is 4.0%. In the ninth embodiment, the left side of the coil (1 〇) has a transport tension difference of 0.8%. Further, in the first to ninth embodiments, the amount of residual solvent in the coil (10) when the mold processing roll (7) was formed into irregularities was variously changed in the range of 10 to 70% by mass. Moreover, the contact time of the casting roll (7) with the coil (10) is the position of the casting roll (7) and the back roll (8) when the specified pressing pressure is measured by a micrometer, and is measured by each of the measured rolls. The outer diameter of the roll is calculated geometrically. In Examples 1 to 9, the contact time between the casting roll (7) and the coil (10) was 2.5 x 1 (Γ3 seconds). Thus, after the unevenness was formed on the surface of the coil (10), a plurality of conveying rolls (14) were used. ) It is conveyed in the heating zone (13) at 110 °C and 120 °C, and the drying is finished at 0, and it is cut into 1400 mm width, and knurled with a width of 15 mm and an average height is applied to both ends of the film, and the winding roller is used. (15) Winding up to obtain a cellulose triacetate film (20). The volume of residual solvent of the wound cellulose triacetate film (20) is 0.1%, the average film thickness is 70 "m, and the number of rolls is Next, the surface unevenness of the antiglare film of Examples 1 to 9 thus produced was measured by Zygo Corporation New View 6200 according to the method of JIS B065 l 200 1 , and the surface roughness (Ra) of the film was measured, according to The transfer rate of the unevenness is calculated as described above. -62- 200930540 Transfer rate = (film Ra) / (cast roll Ra) xl00 (%) The number of transfer rates obtained is divided into the following four-stage grades, which are regarded as transfer Evaluation of transferability. Evaluation of transferability ◎: Transfer rate of 70% or more Q 〇: Transfer rate: 50 to 70% △: Transfer rate: 30 to 50% X: The transfer rate was 30%, and the transfer rate was measured at 5 points in the width direction of the anti-glare film, and the deviation in the width direction of the transfer rate was calculated as an evaluation of unevenness. 〇〇: within 5% of the deviation of the transfer rate Δ: within 10% of the deviation of the transfer rate X: a deviation of the transfer rate of 10% or more, and the obtained antiglare films of Examples 1 to 9 were visually evaluated. Folding occurs. Evaluation of wrinkles: No wrinkles occur -63- 200930540 △: Weak wrinkles occur. Although it can be conveyed, wrinkles remain in the product. X: Wrinkles occur in the processing rolls. Cannot be transported. In the first side, the conveyance tension (tension 1) of the right end (base end side) of the coil (1 〇) and the same left end portion (shaking end side) are shown in the upstream side of the coil conveyance direction of the mold processing roll. The conveyance tension (tension 2), the difference between the left and right (%), and the upstream side of the coil conveyance direction of the mold processing roll, the amount of residual solvent (% by mass) of the coil (1 〇), processed by casting When the roll forms unevenness, the contact time (seconds) of the coil to the mold processing roll, and the pressing pressure of the mold processing roll (N/m) And the result of the evaluation of the transfer property of the unevenness and the evaluation result of the presence or absence of wrinkles. Example 1 0 to 2 1 Although the same as the case of the above-described Examples 1 to 9, the case with the above Examples 1 to 9 The difference between the examples in the examples 10 to 17 is that the amount of residual solvent of the coil when the mold processing roll (Q 7) is formed into irregularities is less than 10% by mass, or more than 70% by mass, and in Example 18 In the upper side of the coil processing direction of the mold processing roll, the web transport tension adjusting mechanism that adjusts the transport tension of the web to the left and right end portions of the web is provided, and is disposed on the same side. The means for independently measuring the tension of the web conveyance is such that the difference in the measurement of the web transport tension between the left and right ends of the coil of the measuring means is less than or greater than 5%. With respect to the obtained antiglare film of Example 1 〇~2 1 , the occurrence of the E 卩 rate, unevenness, and collapse was evaluated in the same manner, and the results obtained are shown in Table 1 below -64 - 200930540. [Table 1] Tension 1 Right end tension 2 Left end left and right difference (%) Residual solvent amount (% by volume) Contact time (seconds) Pressing pressure (N/m) Transferability wrinkles unevenness Example 1 120 123 2.4 70 2·5χ10·3 5000 〇〇〇Example 2 120 123 2.4 50 2.5x1 O'3 5000 〇〇〇Example 3 120 123 2.4 30 2.5χ10'3 5000 〇〇〇Example 4 120 123 2.4 10 2.5 Χ10'3 5000 〇〇〇Example 5 120 125 4.0 70 2.5x10-3 5000 〇〇〇Example 6 120 125 4.0 50 2.5χ10'3 5000 〇〇〇Example 7 120 125 4.0 30 2·5χ10-3 5000 〇〇〇Example 8 120 125 4.0 10 2.5χ10'3 5000 〇〇〇Example 9 120 121 0.8 50 2.5x10-3 5000 〇〇Δ Example 10 120 123 2.4 80 2.5χ10'3 5000 ◎ Δ Δ Example 11 120 123 2.4 80 2.5χ10'3 5000 Δ Δ 〇 Example 12 120 123 2.4 75 2.5χ10'3 5000 Δ Δ Δ Example 13 120 123 2.4 8 2.5x1 Ο*3 5000 Δ 〇Δ Example 14 120 123 2.4 8 2.5x10-3 10000 Δ Δ Δ Example 15 120 123 2.4 5 2.5χ10'3 5000 Δ 〇Δ Example 16 120 125 4.0 75 2.5x10-3 5000 〇Δ Δ Example 17 120 125 4.0 8 2.5χ1〇·3 5000 Δ 〇Δ Example 18 120 127 5.5 70 2·5χ10.3 5000 〇Δ Δ Example 19 120 127 5.5 50 2.5x10"3 5000 〇Δ Δ Example 20 120 127 5.5 30 2.5χ1〇·3 5000 〇Δ Δ Example 21 120 127 5.5 10 2.5x10-3 5000 〇Δ Δ -65- 200930540 As shown in the results of Table 1, the anti-glare of Examples 1 to 21 Good results were obtained in the film, and the anti-glare films of Examples 1 to 8 were particularly excellent in transferability, and no wrinkles were observed. Examples 22 to 27. The contact time of the mold roll (?) and the film was changed using the apparatus shown in Fig. 2 and Fig. 5, and an experiment was conducted. In the apparatus of Fig. 2, the number of 0 of the casting rolls (7) was two and the contact time was twice. Further, in the apparatus of Fig. 5, the film is wrapped with a casting roll (7) to control the contact time. Next, the finished 1400 mm wide anti-glare film was taken to have a length of 1000 mm, and the state of the film surface was examined visually to evaluate the presence or absence of minute defects. 'Evaluation of the presence or absence of a small flaw ◎: There is no 长度30/zm or more in length: 未 未 长度 : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 长度 长度The results obtained by 瑕疵 are six or more, and the results are shown in Table 2 below. Further, in the following Table 2, in the same manner as in the above-described first to second embodiments, the right end portion of the coil (10) is shown in the upstream side of the conveyance direction of the coil processing machine. The transport tension (tension 1) at the end side and the transport tension (tension 2) at the same left end (shaking end side), and the difference between the left and right (%) and the coil conveyance direction of the mold processing roll-66-200930540 In the upstream side, the amount of residual solvent (% by mass) of the coil (1 ο) is evaluated by the contact time (seconds) of the coil with respect to the mold processing roll and the transferability of the unevenness when the mold forming rolls are formed into irregularities. The results, and the results of the evaluation of whether or not wrinkles occurred. [Table 2] Tension 1 Tension 2 Left and right difference (%) Residual solvent amount (% by weight, contact time (seconds) Transferability wrinkles Micro malaria Example 22 120 125 4.0 70 5.0 xlO·3 ◎ 〇 ◎ Example 23 120 125 4.0 70 5.0χ10_2 ◎ 〇 ◎ Example 24 120 125 4.0 70 0.5 ◎ 〇〇 Example 25 120 125 4.0 70 1.0 ◎ 〇〇 Example 26 120 125 4.0 70 2.5xl 〇 · 3 〇〇 ◎ Example 27 120 125 4.0 70 1.5 〇Δ △ As shown in the results of Table 2, if the contact time of the coil to the mold processing roll is long, the enthalpy is increased, and the contact time is 1 or less, and wrinkles and less glare are obtained. In addition, in the above-described embodiment, the film transport tension on the upstream side in the film transport direction of the mold roll (7) is independently adjusted, but the left side of the film roll transport direction of the mold roll (7) is independent. The same result can be obtained by adjusting the film transport tension. [Simplified illustration of the drawings] Fig. 1 is a view showing an apparatus for manufacturing an anti-glare film having a concave-convex surface forming apparatus according to a first embodiment of the casting roll using the method of the present invention. Flowchart, Fig. 1a is a schematic overall side view, and Fig. 1b is a plan view of a main portion. -67- 200930540 Fig. 2 is a view showing a film tension adjusting mechanism and a forming roll forming device using the method of the present invention. Fig. 3 is a side view showing a principal part of a third embodiment. Fig. 4 is a side view showing a main part of the fourth embodiment. Fig. 5 is a view showing the same Fig. 6 is a schematic flow chart showing another apparatus for manufacturing an anti-glare film comprising a forming apparatus for forming a concave-convex surface using a casting roll for carrying out the method of the present invention, and Fig. 6a is a schematic side view of the entire apparatus. Figure 6b is a plan view of a main part of the same. Fig. 7 is a schematic flow chart showing still another apparatus for manufacturing an anti-glare film using the apparatus for forming a concave-convex surface of a casting roll for carrying out the method of the present invention, and Figure 7a is a schematic side view of the entire body. Fig. 7b is a plan view of the main part. [Description of main component symbols] 1: Flowing mold ❾ 2: Rotary drive stainless steel endless belt (support) 3: Peeling roller 4: Guide roller 5: Front side conveying tension adjustment The entire roller 5 a : the right end portion 5 b : the left end portion 6 a _ the right end portion 6 b : the left end portion 6 : the rear side conveyance tension adjusting roller - 68 - 200930540 7 : the mold processing roller processing roller roller material transfer tension measuring means) Transfer tension measuring means) 7 A~7 D : Mold 8: Reverse roll

8A, 8B: Reverse 9A: Tensiometer (j. 9B: Tensiometer U 1 0 : Coil φ 1 1 : Guide roller rust steel drum (support) 12: Guide roller 1 3 : Drying device 1 4 : Conveying roller 1 5 : take-up roll 20 : film 22 : rotary drive] ❹ -69-

Claims (1)

200930540 X. Patent Application No. 1. A method for producing an anti-glare film, which is a resin solution in which a resin is dissolved in a solvent, which flows on a rotary drive support having a smooth surface, and volatilizes the solvent until it can be peeled off from the support. After forming the coil, in the process of drying the web from which the support is peeled off, the mold processing roll is pressed against the surface of the coil, and an anti-glare film is formed by forming a film by the solution flowing on the surface of the film. The method is characterized in that the web conveying tension in the upstream side or the downstream side in the direction in which the roll is conveyed in the winding direction of the roll is adjusted to be different from each other at the left and right end portions of the coil. 2. The method for producing an anti-glare film according to the first aspect of the invention, wherein the coil conveyance tension is applied to the left and right ends of the coil on the upstream side or the downstream side of the coil processing direction of the mold processing roll The coil conveying tension adjusting mechanism is adjusted to be different from each other, and the means for independently measuring the conveying tension of the web is provided on the same side, and the measurement of the web conveying tension at the left and right end portions of the coil obtained by the measuring means is 1~ 5%-like, micro-motion adjustment of the coil 〇 conveyance tension adjustment mechanism. (3) The method for producing an anti-glare film according to the first or second aspect of the patent application, wherein the residual solvent in the web when the forming rolls are formed into irregularities is 10 to 70% by mass. 4. The method for producing an anti-glare film according to any one of claims 1 to 3, wherein the contact time of the coil to the mold processing roll is 2. Seconds. 5. The method for producing an anti-glare film according to any one of claims 1 to 4, wherein the mold processing roll has a pressure of -70 to 200930540 2 00 to 5 0000 N/m for the coil. 6. The method for producing an anti-glare film according to the second aspect of the invention, wherein the coil conveying tension adjusting mechanism adjusts a measurement difference of a web conveying tension of the left and right end portions of the coil obtained by the measuring means. For 2~4.5%. An anti-glare film, which is produced by the method of any one of claims 1 to 6. -71 -