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US 7,582,236 B2Granted
Film stretching apparatus and solution film-forming method
AssigneeFUJIFILM Corporation
InventorsHidekazu Yamazaki, Sadanobu Fujimoto, Toshinao Arai
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AssigneeFUJIFILM Corporation
InventorsHidekazu Yamazaki, Sadanobu Fujimoto, Toshinao Arai
Estimating the term…
A clip to hold the film has a clip body, a flapper, a press slider and a rail mount. A pair of the press sliders is located in both sides of the flapper. A coil spring presses the press slider upward. A pair of entrance side film release members, provided in the tenter entrance, presses the press slider downward to press the lateral edge portions of the film by the press sliders. At the film hold position, the flapper rotates from a release position to a hold position to hold the film, and the flapper is kept at the hold position by a torsion spring. The flapper holds the film 26 after the press slider holds the lateral edge portions of the film, so the flapper can hold the film even when the lateral edge portions of the film are curled.
A solution film-forming method for forming a polymer film by casting polymer solution on a support, peeling the polymer film off the support, and stretching the polymer film by a film stretching apparatus, the film stretching apparatus having plural clips, each clip having first and second holders, the clips being attached to a pair of endless members for holding both lateral portions of the polymer film, the film stretching apparatus stretching the polymer film in the direction that crosses a film feeding direction while driving the endless members to feed the polymer film in the film feeding direction, the method comprising:
Dependencies are inferred from the claim text.