Sheet packaging material for producing sealed packages of pourable food products

A sheet packaging material for producing a sealed package of a pourable food product is disclosed. The packaging material may include at least one base layer for imparting stiffness to the sheet packaging material, at least one lamination layer applied to and covering said base layer, and a partially laminated opening zone. The opening zone may include a laminated cutting area having at least three longitudinal portions extending between the center and the periphery of the opening zone, and at least three removable portions adjacent to the laminated cutting area, each removable portion being located between two longitudinal portions and having a folding zone adjacent to the periphery of the opening zone. In use, the removable portions are partly detached from the packaging material by penetration of the laminated cutting area prior to being folded at the folding zone to form an opening in the packaging material for pouring a food product from the package. A sealed package formed by folding and sealing the sheet packaging material is also disclosed.