modelling belt conveyor in simscape, is there any suggestion to model the belt ?

Dear friends,

i am going to model a simple short (1-2 m) belt conveyor for packet handling application via simscape, would be good to import my cad files from solidworks but it is not obligatory.

packet (10-20 kg) should be moved between two pulleys, and due to its weight changes in speed of belt, motor torque, and motor electrical current should be plotted.

more complexity is that belt has friction with has friction with conveyor body.

belt is an elastic body with specific mass which can be rounded around pulleys. the problem is the moving "belt" is not prepared as a component in simscape. and there is not any similar component which i can use to modify it.

any suggestion is greatly appreciated in advance.

best regards