Hard coat film, process for producing the hard coat film, and antireflection film using the hard coat film

• Main Authors: ONO, TOSHIYA, NAKASHIMA, KOJI
• Format: Patent
• Language: Chinese; English
• Published: 16.09.2010
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING

Disclosed is a hard coat film that is used in optical applications such as polarizing plate protecting films for liquid crystal display devices and has a high quality without sacrificing flatness even when the ratio of the thickness of the hard coat layer to the layer thickness of a resin film base material is large. Also disclosed are a process for producing the hard coat film and an antireflection film. In a process of curing the hard coat layer provided by coating onto the resin film base material by actinic radiation irradiation, the average thickness of an entrained air layer in a space between the resin film base material and a backup roll is 0.5 to 10 [mu]m. Preferably, the net contact area between the backup roll (2) and the resin film base material (1) is 0.1 to 10% of the apparent contact area.