Sheet packaging material for producing sealed packages of pourable food products

摘要

A sheet packaging material for producing a sealed package of a pourable food product comprises one base layer, a number of lamination layers covering both sides of the base layer, and a removable portion which, in use, can be detached partly from the rest of the packaging material along at least one arc-shaped cutting line and folded at a folding zone extending between opposite ends of the cutting line to free a pour opening; the removable portion comprises a central area made of whole packaging material and which, in use, remains attached to the rest of the packaging material through a permanent bridge defined by the folding zone, and a peripheral area for cutting interaction, extending around part of the central area, containing the cutting line and including at least one pre-laminated opening formed by a through slot at least in the base layer and covered by one or more of the lamination layers.

主权项

1. A sheet packaging material for producing a sealed package of a pourable food product, said packaging material comprising:
at least one base layer for imparting stiffness; at least one lamination layer applied to and covering said base layer; and a removable portion which, in use, is covered by an opening device that includes a rotatable cutter, the removable portion, in use, being partly detachable from a remainder of said packaging material along at least one arc-shaped cutting line by rotation of the cutter and folded at a folding zone extending between opposite ends of said cutting line so as to free a pour opening by which to pour the food product from said package, the removable portion including a center; wherein said removable portion comprises: a central area made of whole packaging material and which, in use, remains attached to the rest of the packaging material through a permanent bridge defined by said folding zone, the central area which is made of whole packaging material and which, in use, remains attached to the rest of the packaging material through the permanent bridge defined by said folding zone including the center of the removable portion; and a peripheral area for cutting interaction, extending around part of said central area, containing said cutting line and including at least one pre-laminated opening, which is formed by a through slot provided at least in said base layer and covered by said at least one lamination layer, and wherein said whole packaging material comprises said at least one base layer and said at least one lamination layer.