| 摘要 |
The machine for the packaging of products with stretchable and thermoplastic film comprises:-Means for the tubularization of a wrapping film ( 5 ) taken from a feeding bobbin and means ( 6 ) for the longitudinal tight-seal welding of the super-imposed edges of such tubularized film;-Means ( 7, 7 ') which alternate in the transversal grip of the head of the tubular wrapping which comes out from said tubularization means, which are pre-arranged for the longitudinal movement of said wrapping, to longitudinally stretch it and to perform on same two transversal, parallel and tight seal weldings, a transversal cut placed between the said weldings and to retain the wrapping upstream and downstream of the two welded zones separated by the cut,-Means ( 2, 3, 4 ) for the cyclical introduction of a product (P) through the inlet of said tubularization means ( 1 ) and up to its outlet;-Means ( 10 ) to temporarily support the packaging being formed;-Means ( 12, 12 ') to stop the forward movement of the tubular wrapping on the outlet mouth of said tubularization means ( 1 ), to allow the longitudinal stretching of the wrapping in its formation phase, under the action of the active one of said gripping, double welding and interposed cutting means ( 7, 7 ');-A conveyor ( 11 ) for taking and moving away the formed packaging (Z).
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