What are the difficulties in producing large-capacity stainless steel water cups?

Today I will briefly talk about the difficulty of producing large-capacity stainless steel water cups. Why do we want to talk about this topic? Mainly because from 2020 to now, due to market demand, large-capacity water bottles have gradually become popular in many markets around the world.

Large-capacity stainless steel water cups usually refer to large-capacity water cups with a capacity of more than 1 liter. Recently, the most popular stainless steel water cups on the market are stainless steel water cups with a capacity of more than 1.5 liters. Large-capacity stainless steel water cups usually come in two shapes. One is a cup with a smaller mouth diameter and a higher verticality. The other is that the mouth of the cup is larger, and the diameter of the cup body is also larger, so that the water cup itself is shorter.

These two types of water cups also have the problem that the inner tank is not easy to polish. Due to the large capacity of the water cup, the ratio of the cup mouth to the cup body is usually large, so it is difficult to fully polish the inside of the water cup.

Secondly, the higher the water cup body, the gap between the inner and outer shells must be fully considered in design and production. The higher the water cup body, the more likely it is that the inner tank will shift when the two shells are welded. Once the gap between the two layers is If it is too small, the inner tank will shift and the inner and outer layers will come into contact, which will directly cause problems such as poor thermal insulation effect.

The larger the inner diameter of the water cup, the harder it is for workers to control during processing, and it is difficult to implement each process during work. In particular, if the inner diameter of the water cup is too large, the greater the ratio to the diameter of the cup mouth, the difficulty in the necking process will increase exponentially, and in severe cases, it will directly cause the necking to explode.