Why did the balloon burst when it was punctured? It turned out that the balloon was slightly damaged, its strength plummeted and it was easily torn. In fact, most of the materials are like this. For example, scraping the glass with glass cutter is easy to break.

When the balloon is punctured by a sharp object, the gas in the balloon rushes out of the hole. Because the strength of the balloon at the fracture suddenly decreases, the balloon is torn and exploded.

When the balloon is stuck with double-sided adhesive, transparent adhesive, etc. And punctured from the adhesive, the balloon will not be torn because it is "reinforced" by the adhesive, so at most, the balloon leaks air and will not explode.