Method and device for forming cast film, and solution film forming method
A technology of casting film and dope, applied in the field of solution film making, can solve the problem of uneven optical properties
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[0238] (Experiments 1~8)
[0239] Experiments 1 to 8 were carried out according to the following method. Regarding the details of each experiment, Experiment 1 will be described in detail, and the description of the same parts as Experiment 1 will be omitted for Experiments 2 to 8, and the different parts will be described.
[0240] (Experiment 1)
[0241] The formulations of the compounds used to prepare the dope 24 are shown below.
[0242] The solid content will be constituted according to the following composition ratio, namely
[0243] 100 parts by mass of cellulose triacetate (degree of substitution 2.86),
[0244] 10 parts by mass of triphenyl phosphate (TPP),
[0245] 0.03 parts by mass of delustering agent (AEROSILR972)
[0246] Appropriately added to a mixed solvent composed of the following, and stirred and dissolved to prepare a dope 24, that is,
[0247] 80 parts by mass of dichloromethane,
[0248] 13.5 parts by mass of methanol,
[0249] 6.5 parts by mas...
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