Method for controlling uniformity in tire tread stock

Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling rate of movement of molding material or its...

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264 404, 264164, 264210R, 264216, 425141, B29C 1700, D01F 1102

Patent

active

040874990

ABSTRACT:
Uniformity in weight per unit length of continuously extruded tire tread stock is improved by measuring a dimension thereof such as thickness in the tread stock between the extruder die face and the conveyor and controlling the speed of the conveyor in response to deviations from an arbitrary norm of the dimension. A laser beam measuring device for measuring thickness variations in the tread stock before it reaches the conveyor and while the tread stock remains dimensionally unstable following its extrusion.

REFERENCES:
patent: 3265786 (1966-08-01), Voelker
patent: 3890078 (1975-06-01), Straumanis
patent: 3975126 (1976-08-01), Wireman et al.
patent: 3989779 (1976-11-01), Bruanhofer

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