| 摘要 |
A machine for the packaging of products with stretchable and thermoplastic film, comprising of a tubularization means comprising a tubular forming head device having an inlet and an outlet, for the tubularization of a wrapping film taken from a feeding bobbin and means for the longitudinal tight-seal welding of the superimposed edges of such tubularization film; means which alternate in the transversal grip of the head of the tubular wrapping which comes out from the tubularization means, which are pre-arranged for the longitudinal movement of the wrapping, to longitudinally stretch it and to perform on same at least two transversal, parallel and tight seal weldings, a transversal cut placed between the weldings and to retain the wrapping upstream and downstream of the two welded zones separated by the cut; means for the cyclical introduction of a product through the inlet of the tubularization means and through the outlet of the tubularization means thereby advancing the tubular wrapping film; means to temporarily support the film wrapped packaging being formed downstream of the tubularization means; means to brake the forward movement of the tubular wrapping film by pressing it against the outlet end of the forming head device to longitudinally stretch the wrapping in its formation phase, under the action of the active introducing means and one of the gripping, double welding and interposed cutting means; and a conveyor for the taking and the moving away of the cyclically formed packaging.
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