| abstract |
An object of the present invention is to provide a joining roll which can easily confirm the presence of deformation and adhered matter on the surface, and an apparatus and a manufacturing method of the optical film laminate using the joining roll. In order to solve the above-mentioned object, at least one of the first roll and the second roll has a surface composed of a rubber layer, which is composed of a first roll and a second roll and is used for bonding a plurality of optical films , The rubber layer has a luminous reflectance R SCI of 10% or less measured by the regular reflected light containing method, a durometer type A hardness according to JIS K 6253-3: 2012 of 80 ° or more, and an optical film laminate A manufacturing apparatus and a manufacturing method are provided. |