Film stretching apparatus

Details Film stretching apparatus Film stretching apparatus

2011-03-01

2011-03-01

Gupta, Yogendra N (Department: 1744)

Plastic article or earthenware shaping or treating: apparatus

Continuous filament forming or film casting means with...

C425S073000, C425S297000, C425S404000, C425S445000, C425SDIG053

Reexamination Certificate

active

07896634

ABSTRACT:
In a tenter dryer, while a film is dried, the stretch or the relaxation of the film are made. The tenter dryer includes first-third drying chambers for independently controlling the drying conditions and a shiftable stretch/relaxation device for making the stretch and the relaxation of the film with holding the film. When the stretch/relaxation device holds four edges, cutter blades provided in a drying nozzle cut the film to sheet films. Then while holding the film, the stretch/relaxation device moves between the first-third drying chambers in which drying conditions are previously controlled.

REFERENCES:
patent: 2698967 (1955-01-01), Reichel et al.
patent: 2912716 (1959-11-01), Frownfelter et al.
patent: 2918696 (1959-12-01), Bottoms et al.
patent: 5512229 (1996-04-01), Bosse et al.
patent: 6099791 (2000-08-01), Shannon et al.
patent: 2004/0099992 (2004-05-01), Merrill et al.
patent: 2002-265636 (2002-09-01), None

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