Controlled tow stretching process

Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting

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Details

2642905, D02J 122

Patent

active

045017107

ABSTRACT:
This is an improved apparatus and process for stretching a tow of filaments by the tension caused by driven rolls dragging the tow across drag rolls. The improvement comprises continuously controlling at least one undriven or drag roll proportional to the sensed variation in a ratio of speed between at least one driven roll and at least one drag roll.

REFERENCES:
patent: 2123936 (1938-07-01), Dreyfus et al.
patent: 2359170 (1944-09-01), Symmes
patent: 2627103 (1953-02-01), Jennings
patent: 2999295 (1961-09-01), Manning et al.
patent: 3266082 (1966-08-01), Brandi
patent: 3296680 (1967-01-01), Iwnicki et al.
patent: 3983608 (1976-10-01), Stanley
patent: 4095318 (1978-06-01), Abbott et al.

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