Method and apparatus to make an endless, flat, flexible belt...

B - Operations – Transporting – 29 – D

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B29D 29/06 (2006.01) B29C 33/12 (2006.01) B29C 41/06 (2006.01) B29C 70/20 (2006.01) B29C 70/22 (2006.01) B65G 15/36 (2006.01) B29C 41/04 (2006.01)

Patent

CA 2069071

A method and an apparatus are presented for making an endless, flat, flexible belt of pourable plastics comprising a core, especially a multiple core, as tension bearer, for example in a conveyor belt of polyurethane. Spaced apart support fila- ments (4) extending transversely of the longitudinal direction of the belt (2) are tightened in a mold approximately in the center plane of the belt (2) to be cast so that the tension bearer will be placed as accurately as possible in the middle, based on the thickness of the belt to be produced. Subse- quently the tension bearer (6) is wound in longitudinal direc- tion of the belt (2) on the winding support formed by the sup- port filaments (4). Thereupon liquid plastic material is pour- ed into the mold and following that the support filaments (4) protruding from the side surfaces (11) of the belt are cut off upon termination of the curing.

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