Procelain (or glass) object are wrapped in paper or straw before packing to reduce the chances of damage during transportation. During transportation sudden jerks or even fall takes place.
When objects are packed in paper or straw etc, the objects take more time to stop or change velocity during jerks i.e. the force take longer time to reach the procelain, the objects through paper or straw for same change in momentum as $F=\frac{\Delta p}{\Delta t}$. Hence a lesser force acts on object become more safe.