Method for applying an extruded seal to a surface
AssigneeSacmi Cooperativa Meccanici Imola Societa' Cooperativa
InventorsDanilo Albonetti, Andrea Sallioni
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Abstract
A method for applying a sealant to the surface of an object includes forming an annular dose of synthetic plasticised material supplied from an extruder, depositing the dose on the surface of object and compression forming the dose to form a seal. The extruder includes an annular outlet which is opened and closed to deposit successive doses. Each dose that exits the annular outlet is separated from a supply of plasticized material in the extruder.
Claims9
1-22. (canceled)
A method for applying a sealant to a surface of an object by an extruder having an annular channel communicating with an annular outlet, comprising the steps of:
- supplying a continuous flow of synthetic plasticised material through the annular channel as far as the annular outlet;
- continuing to supply said continuous flow, making an annular portion of the synthetic plasticised material exit the annular outlet, with the annular outlet in an open position, by pressurizing the synthetic plasticised material upstream of the annular channel;
- subsequently closing the annular outlet so that said exited annular portion is separated from the synthetic plasticised material that remains:inside the annular outlet;
- performing opening and closing cycles of the annular outlet to form at each cycle at least one annular dose;
- separating the annular dose that has exited the annular channel from the rest of the material remaining inside the annular channel;
- depositing the annular dose that has exited the annular channel on the surface, wherein the annular dose that has just exited adheres to the surface and is then separated from plasticized material remaining in the annular channel;
- and
- compression forming the annular dose on the surface to form a seal.
Dependencies are inferred from the claim text.