There are two reasons for this problem, which are related to both glue and bottle.

First, the reason for the glue. Except for a few high-end rubbers, other acid rubbers on the market now add a certain amount of filler to reduce costs, and the lower the grade of the glue, the more fillers are added, and the filler is Will react with the plastic bottle, so that the plastic bottle grows tall, deforms and the bottle body has oil; for example, high-grade plastic may cause the plastic bottle to react after 6 months, and lower-grade plastic may react after 6 months.

Second, the reason for plastic bottles. The quality of the material of the plastic bottle is also the reason for the growth. The raw materials used in the bottle body are also good or bad. If the raw materials used are good, the trend of the plastic bottle changes slowly. For example, good quality plastic bottles can be stored for 7-8 months without any response when loaded with high-grade plastics. On the contrary, even with better quality plastic bottles, they may be deformed in 2-3 months.