Film producing method and film washing device
AssigneeSumitomo Chemical Company, Limited
InventorsRikuri UEJIMA, Akihiko SHIN
Life of this patent
Estimating the term…
Abstract
Contamination of a washing liquid in a washing tank is suppressed at a downstream side of a path for transferring a film. A washing device includes a roller for transferring a heat-resistant separator from a washing tank to another washing tank. Two rollers contact one surface of the heat-resistant separator, and a remaining roller, between the two rollers, contacts the other surface of the heat-resistant separator. A washing liquid removed from the heat-resistant separator by the remaining roller returns to the washing tank.
Claims14
A film producing method, comprising the steps of:
- washing a film in a first washing tank;
- and
- transferring the film to the second washing tank by causing a first roller, a second roller, and a third roller to contact the film after the film is transferred from the first washing tank,
- in the step of transferring the film,
- the first roller and the third roller contacting one surface of the film, and the second roller contacting, between the first roller and the third roller, the other surface of the film, so that a washing liquid is removed from the film, and
- the washing liquid removed from the film by the second roller being returned to the first washing tank.
A film washing device, comprising:
- a first washing tank and a second washing tank each for washing a film;
- and
- a first roller, a second roller, and a third roller each for contacting the film after the film is transferred from the first washing tank and transferring the film to the second washing tank,
- the first roller and the third roller contacting one surface of the film, and the second roller contacting, between the first roller and the third roller, the other surface of the film, so that the second roller removes a washing liquid from the film, and
- the washing liquid removed from the film by the second roller being returned to the first washing tank.
Dependencies are inferred from the claim text.