Material roll and method for manufacturing material roll

摘要

Provided are a material roll and a method for manufacturing the material roll in which lifting between base films and an optical film is hardly generated. Provided is a material roll (R), wherein a first base film (F12), a first pressure-sensitive adhesive layer (F14), an optical film (F11), a second pressure-sensitive adhesive layer (F15) and a second base film (F13) are wounded together in a manner that said layers are laminated in said order from outer side. An adhesive power A of the first pressure-sensitive adhesive layer (F14) at an interface on the first base film (F12) side, an adhesive power B of the first pressure-sensitive adhesive layer (F14) at an interface on the optical film (F11) side, an adhesive power C of the second pressure-sensitive adhesive layer (F15) at an interface on the optical film (F11) side, and an adhesive power D of the second pressure-sensitive adhesive layer (F15) at an interface on the second base film (F13) side satisfy the relationships A

主权项

1. A material roll, comprising:
an optical film; a first base film disposed on a first surface of the optical film with a first pressure-sensitive adhesive layer interposed between the first surface of the optical film and the first base film; and a second base film disposed on a second surface of the optical film with a second pressure-sensitive adhesive layer interposed between the second surface of the optical film and the second base film, wherein an adhesive power A of the first pressure-sensitive adhesive layer at an interface on the first base film side, an adhesive power B of the first pressure-sensitive adhesive layer at an interface on the optical film side, an adhesive power C of the second pressure-sensitive adhesive layer at an interface on the optical film side, and an adhesive power D of the second pressure-sensitive adhesive layer at an interface on the second base film side satisfy the relationships A