From the Right view, which is presented in Fig. 6, it can be observed an increased intensity of defects in the longitudinal
direction of the conveyor belt sample, which was picked from the pipe conveyor. An extent of the defect is so much largescale
in the several points that even the textile carcass of the conveyor belt is uncovered. The existence of these cracks and
chaps is a result of the thermal degradation due to transport of the above-mentioned hot material. Almost all the defects and
cracks are contaminated by particles of the transported material. This material causes consequently also a separation of
small parts from the top cover of the belt as well as it causes a gradual uncovering of the conveyor belt carcass. A damage
of the belt bottom cover is not visible from the both considered points of view or it is possible to say that the bottom cover
damage is steady and with only a minimal intensity. From the Top view, which is presented in Fig. 5, there can be recorded
the single-sided thermal damage of the sample with the gradually created small ‘‘islets’’. The sample No. 5 in Fig. 7 is
damaged markedly on the top cover. The defects are created in the form of cracks with various depth and these cracks
are reaching up to the conveyor belt carcass of the pipe conveyor. The cracks are distinctive in the longitudinal and
transversal direction of the analysed sample. Such huge damage of the upper covering layer causes a very significantly
destruction of the strength characteristics of the conveyor belt and it affects negatively the stress-deformation conditions
in the belt during a current operation