Patent ID: 11939093
Assignee: I.M.A. INDUSTRIA MACCHINE AUTOMATICHE S.P.A.
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 10:
11. A method for forming a filter bag for infusion products, with a sheet of over-wrapping material, the method comprising the following steps:
providing a carousel rotating about a first axis and including at least one first and one second gripping devices including grippers movable in rotation about the first axis of rotation along a closed circular trajectory;
providing a sealing gripper, arranged outside the carousel and adjacent to the closed circular trajectory of the first and second gripping devices;
housing a U-shaped sheet of over-wrapping material inside only the first gripping device prepared in an open receiving position;
inserting a formed filter bag inside the U-shaped sheet of over-wrapping material arranged in the first gripping device;
passing the formed filter bag and the U-shaped sheet of over-wrapping material from only the first gripping device to the sealing gripper; the sealing gripper being arranged in a position adjacent close to the carousel;
closing the sheet of over-wrapping material about the formed filter bag by the sealing gripper during a moving away thereof from the carousel;
releasing the closed filter bag in the sheet of over-wrapping material to only the second gripping device by the sealing gripper during a further moving near of the sealing gripper to the carousel;
unloading the filter bag closed in the sheet of over-wrapping material in a receiving station of the closed filter bags.