| 摘要 |
Dual lanes of fitment-sealing apparatus, for sealing plastic spout fitments to carton blanks, are integrated in line with conventional form/fill/seal production lines. Each apparatus includes a carton blank supply, an indexing conveyor for advancing the blanks in tube form to a sealing station, a gravity-feed track for supplying fitments to the sealing station through an escapement, a pair of fitment retaining clamps for holding the fitment in registration with a spout hole cut in the carton blank, an anvil which is inserted inside the carton blank, a sealing head which is moved to press the fitment in contact with and to seal it to an extrusion layer on the external side of the carton blank, and a timing control for synchronizing the movements of the parts and advancing the carton blanks through the sealing station to an output thereof. The fitment may also be sealed to the extrusion layer with a hot-melt adhesive applied to the fitment just prior to pressing against the carton blank. Heat may be applied to tackify the adhesive by a hot anvil or sealing head equipped with heating elements.
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