The difference between a sealed and seamless inner liner of a thermos cup
1. Process difference: Welding vs. Integrated Forming (1) Seam inner liner: It is formed by welding metal sheets after curling, and the seams are usually laser or high-frequency welded. The advantage is that the production cost is low (about 30% lower than seamless inner liner), but the weld seam is prone to residual metal shavings […]
Reasons for the heating of the thermos cup lid and whether it affects the insulation effect
The heating of the thermos lid does not necessarily indicate poor insulation effect, but may be related to factors such as the sealing of the lid and the material used. 1. The reason for the heating of the thermos cup lid There may be several reasons for the heating of the thermos cup lid, including: […]
