Device for conveying a tubular film

Details Device for conveying a tubular film Device for conveying a tubular film

2011-05-24

2011-05-24

Aftergut, Jeff H (Department: 1746)

Plastic article or earthenware shaping or treating: apparatus

Means treating shaped work

C425S326100, C226S174000, C226S177000, C165S120000

Reexamination Certificate

active

07946841

ABSTRACT:
A device for the transportation and chilling of a film tube extruded shortly before has at least one first pair of rollers, through the clearance between which rollers, the film tube enters into a chilling area, and a second pair of rollers, through the clearance between which rollers, the film tube leaves the chilling area. Thereby the film tube can discharge heat to its environment between the first and the second roller pair.The path length that the film traverses between the first roller pair and the second roller pair is variable.

REFERENCES:
patent: 3116787 (1964-01-01), Campbell
patent: 3340565 (1967-09-01), Holly
patent: 3768949 (1973-10-01), Upmeier
patent: 4105386 (1978-08-01), Thiel et al.
patent: 4676728 (1987-06-01), Planeta
patent: 5458841 (1995-10-01), Shirrell
patent: 0 531 021 (1993-03-01), None
patent: 1 320 552 (1973-06-01), None
patent: 2 201 371 (1988-09-01), None

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