Solution casting apparatus and solution casting method

A solution casting method for producing a multilayered film having a cellulose acylate layer including cellulose acylate and additives, and a matting agent layer including matting agents, said cellulose acylate and said additives, said solution casting method comprising the steps of:

• sending a first dope forming said cellulose acylate layer to a casting die through a first pipe;
• sending a second dope forming said matting agent layer to said casting die through a second pipe;
• adding dilute liquid to said second dope using a dilute liquid supply device provided to said second pipe;
• stirring a mixture of said dilute liquid and said second dope using a first inline mixer provided to said second pipe;
• adding matting liquid including said matting agents and said cellulose acylate to said second dope using a matting agent supply device provided to said second pipe at downstream from said first inline mixer;
• stirring a mixture of said matting liquid and said second dope using a second inline mixer provided to said second pipe;
• casting said first dope and said second dope such that said first dope and said second dope are layered on a running support to form a casting film having said matting agent layer and said cellulose acylate layer;
• peeling said casting film from said support to be a wet film;
• and
• drying said wet film to be said multilayered film.