METHOD FOR FABRICATING A BELT WITH TREATED TENSION MEMBERS WITH ENVELOPE LAYER AND BELT THUS PRODUCED

摘要

A method for fabricating a belt with upstream treatment of a tension member. The belt comprises a belt body made of a polymeric material having elastic properties, having a top ply as belt backing and a substructure having a force transmission zone, and a tension member embedded into the belt body. The tension member has been treated with crosslinked polymer; in an upstream stage of the belt fabrication method, voids in the tension member are filled at least partly with crosslinked polymer and the tension member is sealed with an envelope layer of crosslinked polymer, this being done, in a single treatment stage or in at least two treatment stages, by wetting of the tension member with an overall treatment mixture comprising at least one prepolymer, at least one crosslinker and at least one solvent or dispersion medium, and then drying of the treated tension member.

主权项

1. A process for the manufacture of a belt with upstream treatment of a tension-member system, the process comprising:
performing an upstream treatment by:
wetting a tension-member system with a first complete treatment mixture including at least one prepolymer, at least one crosslinking agent, and at least one solvent or dispersion medium;filling cavities in the tension-member system at least to some extent with the first complete treatment mixture;sealing the tension-member system with an encapsulating layer to make an encapsulated tension-member system; and,drying the encapsulated tension-member system to prepare an at least partially crosslinked polymer and to complete the upstream treatment; forming a substructure of a belt having a force-transmission zone by embedding the encapsulated tension-member system in a polymeric material with elastic properties; and, forming a main belt structure by providing an outer layer as belt backing on the substructure having the force-transmission zone; wherein the wetting of the tension-member system is carried out in a single treatment stage or is carried out in at least two treatment stages.