| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a cellulose ester laminated film to bring about effect enhancing the drying efficiency of a web on a support, making it hard to generate the curling of the web, suppressing the deterioration of optical and physical properties such as retardation or the like, making it hard to generate lumps of a dried dope in a casting die lip during casting, reducing the 'pushed' trouble or the breakage of the side parts of the web caused by the generation of lumps and more reducing the generation of lumps of the dried dope in the casting die lip by increasing the casting width of the outermost layer. SOLUTION: In the method for manufacturing the cellulose ester laminated film due to a solution casting film forming method for forming the web comprising at least two layers by together casting dopes on the support to obtain the laminated film, the average of the total content of a cellulose ester, an ultraviolet absorber, fine particles and a plasticizer at the part on the side of the support from the thickness center of the web on the support in an undried state is made higher than that of the total content at the part outside from the thickness center of the web. |
