| 摘要 |
Form-fill-seal machine for making bag-shaped packagings for products, such as edible products, from a web of foil material, such as synthetic foil, the machine comprising a frame (2) having a stock of web of foil material (3) and a supply of the web of foil material in flat condition, and a form-fill unit positioned at a front side of the machine, wherein the form-fill unit comprises a form shoulder (13) for transforming the flat web of foil material into a foil tube, as well as a form-fill tube connecting to the form shoulder, having a vertical main plane of section, in which the machine furthermore comprises transverse sealing jaws (71) that are positioned below the lower end of the fill tube (14) for forming transverse seals in the foil tube and which are reciprocally moveable in a vertical plane perpendicular to the front side of the machine and the said vertical plane of section, the form shoulder being asymmetrically shaped for forming an overlap in the foil tube which extends to at least a short distance from or near the said vertical plane of section, wherein the machine is furthermore provided with first longitudinal sealing means (19) that are positioned at a first side, at one lateral side of the form tube, as considered from the front side of the machine, preferably at a short distance from or near the said vertical plane of section, for forming a first, severable longitudinal seal at the location of the overlap. |
