The upgrade of the product mainly includes three aspects: one is the leakage of the product, the second is unclear printing, and the third is excess leftover material. There are mainly two parts for liquid leakage in the product, one is at the welding position between the membrane material and the mouth tube, and the other is at the welding position between the mouth tube and the combined cover. Adjusting the process parameters for these two welds will reduce the occurrence of product leakage. The printing is unclear. Adjusting the material supplier of the heat transfer film and re matching the process parameters will help solve this problem; Reducing excess leftovers can be achieved through local equipment modifications.