You must have bought a water bottle for drinking. Have you ever seen horizontal lines on it ? Do you know why the water bottles have lines on it ?
Let us clear your all doubts:
1. The lines on the bottles neck, which give them strength, are the main cause of this. Let me inform you that soft plastic is utilised to produce water bottles rather than hard plastic, which is what you would have assumed. If these lines are not elevated on the water bottles in this condition, the bottles will flex easily and run the risk of shattering and bursting.
2. Also, to give bottles a good shape, and to attract the more customers by its design results in letting them buy it. To increase their income, popular brands mark the lines on water bottle to give a perfect design.
3. In addition to this, there is a another justification for these lines on water bottles. Water bottles are also marked with lines to help the person holding them maintain a firm grip and prevent the bottle from slipping out of their hands.