Patent ID: 9284078
Filing Date: 2016-03-15
CPC Classification: B29C,B29L,B65B

Claim Text:
1. A packaging unit for producing sealed packages from a tube of a sheet packaging material fed, in use, along a feed path having a first axis; each said package comprising a pair of axially opposite sealing bands, a main body and two axially opposite pairs of folded flaps projecting on opposite lateral side of said main body; said unit comprising: jaw means movable cyclically along said path between a seal position in which they grip and seal said tube to form said sealing bands, and a rest position in which they are detached from said tube; and folding flaps fitted movably to said jaw means; said folding flaps being movable between: an open position in which they are detached, in use, from said tube; and a fully closed position in which they cooperate, in use, with said tube for forming, in each said package, one pair of said folded flaps; said jaw means being also cyclically movable in a plurality of intermediate positions, which are set between said rest position and said seal position; wherein said folding flaps are movable relative to said jaws means into a partly closed position, which is arranged between said open position and said fully closed position; said folding flaps being movable relative to said jaw means into said partly closed position, when said jaw means are set, in at least one of said intermediate positions.