B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 55/22 (2006.01) B29C 47/20 (2006.01) B29C 47/90 (2006.01) B29C 55/24 (2006.01) B29C 55/26 (2006.01) B29C 47/00 (2006.01)
Patent
CA 2514919
A manufacturing apparatus is provided for manufacturing a tubular resin film of high quality and little thickness variations, which is stretched and given an orientation, and suitable as retardation film or the like. It comprises a stretching section (6) for stretching the tubular resin film (20), and a maintaining section (7) for maintaining a shape of said tubular resin film (20) stretched. Further, said stretching section (6) is arranged to apply a stretching force to said tubular resin film for longitudinally and/or circumferentially stretching said tubular resin film (20).
La présente invention concerne une unité de production de film de résine tubulaire qui est orienté par étirage, qui est de haute qualité, qui possède une épaisseur uniforme et qui convient comme film ignifugé ou comme film de type similaire. Cette unité comprend une zone d'étirage (6) destinée à étirer un film de résine tubulaire (20) et une zone de support (7) destinée à conserver la forme de ce film de résine tubulaire (20). La zone d'étirage (6) est constituée de façon à appliquer sur la longueur et/ou sur la périphérie une force d'étirage à ce film de résine tubulaire.
Akazawa Seigou
Furuhara Shigeyoshi
Ikenaga Masanori
Maruyama Toyotaro
Nakao Toshio
Marks & Clerk
Sumitomo Bakelite Co. Ltd.
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