A balloon is made out of latex and rubber material. When you try to inflate a balloon, it can expand maximum to its elasticity point and the pressure reaches till 810 mmHg. If you still inflate the balloon it can expand up to 820 mmHg, 830 mmHg and then slowly to 830 mmHg of maximum pressure point. At the last, when you still pop up a balloon beyond its maximum pressure and elasticity point of 840 mmHg, the balloon gets blasted.