Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – By casting liquids on a solid supporting or shaping surface
Reexamination Certificate
2011-07-05
2011-07-05
Gupta, Yogendra N (Department: 1744)
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
By casting liquids on a solid supporting or shaping surface
Reexamination Certificate
active
07972547
ABSTRACT:
A casting dope (27) prepared from CAP, additive and solvent is cast onto a belt (46) and peeled as a wet film (74) that is drawn in the longitudinal direction in a transporting area (80). In a tenter device (47), while the wet film (74) is stretched in the widthwise direction, a relaxation of the wet film (74) in the longitudinal direction is made. If an extent percentage of the stretch is less than 70%, the relation is started. The wet film (74) is fed out as a polymer film (82) from the tenter device (47). On the polymer film (82), the in-plane retardation increases and the thickness retardation decreases. Thus the optical properties become preferable.
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CN Second Office Action, dated May 13, 2010, issued in corresponding CN Application No. 200680034657.3, 8 pages.
FUJIFILM Corporation
Gupta Yogendra N
Hindenlang Alison
Sughrue & Mion, PLLC
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