Method for producing laminated film

A method for producing a laminated film, the method comprising:

• a printing step of applying an active energy ray-curable printing ink to a first substrate film formed of at least a plastic film;
• an adhesive application step of applying an adhesive;
• and
• a lamination step of laminating a second substrate;
• the steps being performed in this order in-line;
• wherein the method further comprises a curing step of irradiating the active energy ray-curable printing ink with an active energy ray to cure the active energy ray-curable printing ink after at least the adhesive application step;
• wherein the adhesive is an active energy ray-curable adhesive;
• wherein the method includes the curing step after the lamination step;
• wherein the active energy ray-curable printing ink and the active energy ray-curable adhesive are cured in the curing step;
• and
• wherein a viscosity β1 of the active energy ray-curable adhesive at a temperature of 30° C. and a shear rate of 300 s−1 is 0.1 Pa·s or more and 20 Pa·s or less.

A method for producing a laminated film, the method comprising:

• a printing step of applying an active energy ray-curable printing ink to a first substrate film formed of at least a plastic film;
• an adhesive application step of applying an adhesive;
• and
• a lamination step of laminating a second substrate;
• the steps being performed in this order in-line;
• wherein the method further comprises a curing step of irradiating the active energy ray-curable printing ink with an active energy ray to cure the active energy ray-curable printing ink after at least the adhesive application step;
• wherein the adhesive is an active energy ray-curable adhesive;
• wherein the method includes the curing step after the lamination step;
• wherein the active energy ray-curable printing ink and the active energy ray-curable adhesive are cured in the curing step;
• and
• wherein a viscosity α of the active energy ray-curable printing ink at a temperature of 30° C. and a shear rate of 300 s−1 is 10 Pa·s or more and 40 Pa·s or less.