| 摘要 |
A method for producing a film having a fine irregular pattern intermittently includes feeding a film to be processed intermittently from upstream side to the vicinity of the surface of a die having a fine irregular pattern, transferring the pattern to the surface of the film by pressing the film against the surface of a die, stripping the processed film on which a pattern is formed from the surface of a die, and then feeding a new film to be processed to the die, wherein the processed film is stripped from the surface of a die by gripping and moving the processed film to the upstream side, and then the processed film is fed by a length of intermittent feed to the surface of a die while preventing the processed film from creasing. |
| 主权项 |
1. A production apparatus for a film having a fine asperity pattern on a surface thereof, comprising:
(1-a) a mold having a mold surface on which a fine asperity pattern is provided, (1-b) a film take-out apparatus to take out a processing film from a long film strip supply source, (1-c) a film pressing apparatus to press said processing film against said mold surface, (1-d) a film peeling apparatus to peel off from said mold surface a processed film to having a fine asperity pattern produced by taking out the processing film from said film take-out apparatus, intermittently supplying it onto said mold surface, and pressing it against said mold surface in said film pressing apparatus to transfer said fine asperity pattern from said mold surface to a surface of said processing film, and (1-e) a film take-up apparatus in which said processed film delivered to the downstream side after being peeled off from said mold surface in said film peeling apparatus is taken up on a long film strip storage source located on the downstream side, thus processing a film in said film pressing apparatus to produce said processed film, peeling it off from said mold surface in said film peeling apparatus, and then delivering said processed film to said film take-up apparatus while another predetermined length of said processing film taken out from said film take-out apparatus is supplied intermittently onto said mold surface, in order to perform repeated production of said processed film by a predetermined length at a time, wherein (1-f) said film peeling apparatus includes a film holding apparatus that holds said processed film while moving from the downstream side to the upstream side in the length direction of said processed film, and (1-g) said film holding apparatus includes a crease formation prevention apparatus to prevent creases from being formed in said processing film supplied onto said mold surface, and the supply of said processing film is performed in coordination with the movement of said crease formation prevention apparatus from the upstream side toward the downstream side in the length direction of said processing film. |
