Molding machine and method for forming optical film

A molding machine for manufacturing an optical film, comprising:

• a hopper contoured to provide a raw material of the optical film and defining a narrow outlet;
• a first cylindrical roller rotatable about a first central axis of the first cylindrical roller;
• a second cylindrical roller rotatable about a second central axis of the second roller, wherein the first central axis is in parallel with the second central axis;
• the first and second cylindrical rollers are located at two opposite sides of the narrow outlet and positioned at substantially a same height below the narrow outlet, wherein a gap between the first and second cylindrical rollers allows the raw material to pass through the gap;
• an ultraviolet (UV) light source located in the second cylindrical roller, wherein an emission direction of the ultraviolet light source is orientated toward a space between the narrow outlet and the second cylindrical roller;
• and
• a holder contoured to hold the second cylindrical roller, the holder comprising:
• a central shaft coaxial with the second cylindrical roller, wherein the UV light source is connected to the central shaft;
• two rotatable shafts located at two opposite sides of the central shaft and paralleling the central shaft, outer surfaces of the two rotatable shafts contacting an inner surface of the second cylindrical roller;
• and
• at least one fixing unit connecting the central shaft and the two rotatable shafts.