How does the cloth became a positive charge when it is rub by a plastic sheet?

when the cloth is rubbed by a plastic sheet, the electrons from the cloth get transferred to the plastic sheet and it becomes positively charged as it loses its electrons to the plastic sheet


How does the cloth became a positive charge when it is rub by a plastic sheet?
its because of electron transfer..How does the cloth became a positive charge when it is rub by a plastic sheet?
it just dos why so worried