PROCESS FOR PRODUCING MULTILAYERED POLYIMIDE FILM

WIPO Patent Application WO/2007/099801

A1

A process for producing a multilayered polyimide film which is even in film thickness in the film-width direction and in dimensional change and has a thermoplastic polyimide layer or the like serving as an adhesive layer. The process for multilayered polyimide film production comprises feeding at least two polyimide resin solutions or polyimide precursor resin solutions to a multilayer coextrusion die having two or more channels and spreading and casting them, and is characterized in that in at least one of the channels, a solvent is added to the resin solution and the amount of the solvent to be added is regulated separately from the amount of the resin solution to be fed to thereby control the thicknesses of the respective layers constituting the multilayered film.

YANAGIDA, Masami (1-5-18-402, Mise Otsu-sh, Shiga 04, 5200004, JP)
柳田 正美 (〒04 滋賀県大津市見世１－５－１８－４０２ Shiga, 5200004, JP)
UESHIMA, Kenji (1-3-1-307, Mayakaigan-dori Nada-ku, Kobe-sh, Hyogo 55, 6570855, JP)

JP2007/052950

September 07, 2007

February 19, 2007

Click for automatic bibliography generation  

KANEKA CORPORATION (2-4 Nakanoshima 3-chome, Kita-ku Osaka-sh, Osaka 88, 5308288, JP)
株式会社カネカ (〒88 大阪府大阪市北区中之島三丁目２番４号 Osaka, 5308288, JP)
YANAGIDA, Masami (1-5-18-402, Mise Otsu-sh, Shiga 04, 5200004, JP)
柳田 正美 (〒04 滋賀県大津市見世１－５－１８－４０２ Shiga, 5200004, JP)

B29C41/32; B29C41/52; B32B27/34; C09J7/02; C09J179/08; B29K79/00; B29L7/00; B29L9/00; B29C41/00; B29C41/34; B32B27/34; C09J7/02; C09J179/00

KANEKA CORPORATION (2-4 Nakanoshima 3-chome, Kita-ku Osaka-shi, Osaka 88, 5308288, JP)

View/Download PDF      PDF Help

Previous Patent: TRANSMITTING TIMING CONTROL SYSTEM, ITS METHOD, AND MOBILE STATION USED IN SAME

Next Patent: PROGRAM TABLE CREATION DEVICE, TELEVISION BROADCAST RECEPTION DEVICE, AND PROGRAM TABLE CREATION MET...