In a first aspect, the present invention relates to a flat belt as an endless traction means suitable for conveyor belts, wherein the flat belt has no fabric insert in the force transmission region and optionally no fabric insert in the back of the belt. In a further aspect, a method for producing a flat belt as an endless traction means is provided. This method is a multistage method involving the steps of forming a flat belt with a main body and endless tension member elements, present therein, by means of a rotary vulcanization process, and subsequently forming at least a part of the force transmission region on the flat belt obtained by the rotary vulcanization process. Furthermore, drive means for conveyor belts, comprising a flat belt according to the invention are provided, and agricultural machines having a conveying device, designed to convey agricultural harvested material, having a flat belt or conveyor belt according to the invention.

An object is to provide a polyurethane transmission belt offering excellent durability, as well as a belt-molding material for manufacturing such transmission belt. As a solution, a polyurethane transmission belt is provided that contains 1,2-cyclohexane dicarboxylic acid diisononyl ester expressed by Chemical Formula (1) below. ##STR00001##

An object is to provide a polyurethane transmission belt offering excellent durability, as well as a belt-molding material for manufacturing such transmission belt. As a solution, a polyurethane transmission belt is provided that contains 1,2-cyclohexane dicarboxylic acid diisononyl ester expressed by Chemical Formula (1) below. ##STR00001##