Method for producing pressure-sensitive adhesive layer-carrying optical film

A method for producing a pressure-sensitive adhesive layer-carrying optical film comprising an optical film, and a pressure-sensitive adhesive layer laminated over at least one surface of the optical film with an anchor layer interposed between the optical film and the adhesive layer,

• comprising the step of applying, over the optical film, a coating liquid for anchor layer comprising a mixed solvent comprising 10 to 100% by weight of water and 90 to 0% by weight of an alcohol, and a polyoxyalkylene-group-containing polymer so as to give an applied-coat thickness before drying of 20 μm or less;
• and next drying the workpiece under drying conditions satisfying both of the following requirements (1) and (2):
• (1) the drying temperature T is from 40 to 70° C., and
• (2) a value obtained by multiplying the drying temperature T (° C.) by the drying period H (seconds), T×H, satisfies:
• 400 ≤(T×H)≤4000,
• thereby removing the mixed solvent to form the anchor layer,
• wherein the period from the time of applying of the coating liquid for anchor layer over the optical film to the time when drying is started is 30 seconds or less, and
• an ammonia content in the coating liquid for anchor layer is less than 0.03 parts by weight for 100 parts by weight of a solid content, and
• wherein the pressure-sensitive adhesive layer is a solvent based adhesive layer.