STIAVELLI, Pavan Group Packaging Division, offers several systems and equipments suitable to check the quality of the bags produced.
The special MCR/STRIPPING sealing jaws assembly for Stiavelli horizontal packers for long goods is at present the best solution available on the market to the growing problem related to the production of bags with pasta scraps in the horizontal seals.
One of the unequalled features of these jaws which are controlled by an independent brushless motor is the possibility to work in two different conditions: MCR traditional operation and new STRIPPING action which cleans the seal area just before sealing thus remarkably reducing the production of bags with scraps. The shift to either operation is mechanic.
The max. percentage of bags with scraps with STRIPPING operation jaws is max. 1% (this data applies to 500-gram bags of dried spaghetti diam.1,7 mm).
Stiavelli visual sensors equipped with dedicated telecameras detect the bags with scraps in the horizontal seals thus enabling the production of good seal bags while similar systems checks the presence and correctness of the printing (bar code, batch number, production/expiry dates, etc.) made by a printer.
The metal detectors find any metallic piece casually fallen inside the pack. They can be supplied stand-alone or built-in together with the check-weighers that make sure the weight of the bags accepted is within the prearranged tolerance limits.
The wrong packs detected by the above mentioned equipments are rejected by means of different devices (pneumatic cylinder, air blow, rollers) depending on the type of pack.