1. Screw cap
As the name suggests, screw cap means that the cap is connected and matched with the container by rotating through its own thread structure. Thanks to the advantages of the thread structure, when the screw cap is tightened, a relatively large axial force can be generated through the engagement between the threads, and the self-locking function can be easily realized.
2. Snap cover
The lid that fixes itself on the container through structures such as claws is generally called a snap lid. The snap cover is designed based on the high toughness of plastic itself.
During installation, the claws of the snap cover can deform briefly when subjected to a certain amount of pressure. Then, under the action of the elasticity of the material itself, the claws quickly return to their original shape and hold the mouth of the container tightly, so that the lid can be fixed on the container.
3. Welding cover
A type of lid that uses welding ribs and other structures to directly weld the bottle mouth part to the flexible packaging by means of hot melt is called a welded lid. It is actually a derivative of the screw cap and snap cap. It just separates the liquid outlet of the container and assembles it on the cap.
Post time: Nov-16-2023