Capacitance sensor for measuring thickness of blown film includi

Details Capacitance sensor for measuring thickness of blown film includi Capacitance sensor for measuring thickness of blown film includi

1991-08-01

1993-04-27

Strecker, Gerard R.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324663, 264 401, G01R 2726, G01B 708

Patent

active

052065995

ABSTRACT:
A sensor system for measuring the thickness of blown film, by mounting a linear motor system on either side of a collapsing frame to permit the linear travel of a forcer element substantially across the width of the collapsing frame. A sensor is affixed to the forcer element and is positioned in close contact with blown film surface, to provide a plurality of measurement samples of thickness during the traversal of the linear motor across the blown film surface.

REFERENCES:
patent: 3300716 (1967-01-01), Engert
patent: 4339403 (1982-07-01), Upmeier et al.
patent: 4947131 (1990-08-01), Mayer et al.
Parke, "Linear Motor Systems", pp. D1-D6.

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