It is a four-piece canister structure. The diameter of the lid is larger than the body of the canister and is set on the canister. The top of the canister is crimped on the outside of the mouth.
The top and bottom round paper gaskets are heat-sealed and fused to the lid and body. Once the product is inside,
the lid sheet is heat-sealed and fused to the outer rolled edge port of the canister body. Different color printed labels are designed to give different visual impressions of the product.
This kind of structure has excellent sealing, generally the paper tube and paper cover material with special lamination paper material.
Widely used with puffed food and food packaging that requires more stringent moisture-proof.