Method for producing film
AssigneeSumitomo Chemical Company, Limited
InventorsYusuke Kon, Tatsuya Kataoka, Hideyuki Hamamura
Life of this patent
Estimating the term…
Abstract
The separator production method in accordance with an embodiment of the present invention includes a coated article taking up step of taking up a separator original sheet by winding the separator original sheet on an outer peripheral surface of a core while oscillating the core in the rotation axis direction; a coated article winding off step of winding off the separator original sheet, which has been taken up in the coated article taking up step, from the core; and a transferring step of transferring the separator original sheet, which has been wound off in the coated article winding off step, such that a state of being distorted in a wavelike manner in the transverse direction is maintained.
Claims5
A method for producing a film, said method comprising the steps of:
- taking up a film by a first step of winding the film on an outer peripheral surface of a core while oscillating the core in a rotation axis direction, such that the film is in a state of being distorted in a wavelike manner in the rotation axis direction;
- a second step of winding off the film, which has been taken up in the taking up step and is in the state of being distorted in the wavelike manner in the rotation axis direction, from the core;
- and transferring the film, which has been wound off in the second winding off step, such that the state of being distorted in the wavelike manner in the rotation axis direction is maintained.
Dependencies are inferred from the claim text.