It is the part of the seamer that performs the deforming operation of the metal, to configure the lid and body hooks and the link between them, giving rise to the seam. There are two types, the first operation, which forms the hooks and binds them, and the second operation, which crushes them together. It also receives other names such as: Trucks, seaming wheels, molars, seaming roll ...
Seaming roll 1st operation: As we have said is the one that constitutes the hooks of the seam. Its function is more important than the 2nd operation, and its proper definition to achieve a good seam is essential.
There are many types in the market and their design can vary between them, although it is always linked to the type of seam that is to be made and the characteristics of the materials used in the manufacture of the container.