ordinary bags are made of either paper or plastic material . due to a puncture of the bag , the point of puncture quickly becomes a ripping point to further enlarge an originally small opening . the present invention overcomes this shortcoming of ordinary bags by using a new material that is produced by adhering a web material with a base material . the web material would effectively serve as a safety net to prevent further ripping of the bag once the base material of the bag is punctured .