Method and device for the continuous stretching of a plastics ma

Details Method and device for the continuous stretching of a plastics ma Method and device for the continuous stretching of a plastics ma

1985-10-10

1988-08-30

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

26 71, 100162R, 100168, 100176, 2642356, 2642884, 264DIG73, 425145, 425367, B29C 5506, B29D 701

Patent

active

047675780

ABSTRACT:
The invention relates to a method for the continuous stretching of a plastics material film, of the type where the film is run off in engagement with two successive rollers which are driven at different tangential speeds, the second roller having a tangential speed which is greater than that of the first roller. The film is run off in engagement with at least a third roller, arranged downstream of the second roller and driven at a tangential speed which is greater than that of the second roller, and it is possible to select as required those of the three rollers in engagement with the film.

REFERENCES:
patent: 2142718 (1939-01-01), Dreyfus
patent: 3076232 (1963-02-01), Dengler
patent: 3208100 (1965-09-01), Nash
patent: 4408974 (1983-10-01), Comerio
patent: 4654180 (1987-03-01), Herrington

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