Conveyor belt of PVC provided with a compound layer of reinforci

Details Conveyor belt of PVC provided with a compound layer of reinforci Conveyor belt of PVC provided with a compound layer of reinforci

1988-06-02

1990-05-29

Spar, Robert J.

Conveyors: power-driven

Conveyor section

Endless conveyor

B65G 1530

Patent

active

049288121

ABSTRACT:
A conveyor belt, which has a high strength, tear resistance and flame retardancy, and which is particularly suitable for use in coal mines. It comprises a matrix of thermoplastic resinous material, e.g., PVC, reinforced with an armouring comprising a layer of primary tension elements extending substantially rectilinearly in the longitudinal direction of the belt and consisting of continuous filaments, and covering layers consisting of yarns or threads disposed on both sides of the primary tension elements so as to impart coherence in the transverse direction of the belt, the top and bottom covering layers being connected by tying yarns or threads. The primary tension elements are composed of cables or cords of aramid. Adjacent primary tension elements are separated by gaps having a width of 0.5 to 3 times, more particularly 2 times the outer diameter of the primary tension elements. The gaps are filled up with one or more elements such as, e.g., cotton cables or cords.

REFERENCES:
patent: 3063884 (1962-11-01), Glover et al.
patent: 3509006 (1970-04-01), Baxendale et al.
patent: 3612256 (1971-10-01), Limbach et al.
patent: 4403632 (1983-09-01), Romanski et al.
patent: 4427107 (1984-01-01), Roberts et al.
patent: 4650068 (1987-03-01), Vanassche et al.

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