Machine and method for forming capsules with pleated capsule body

A method for forming a capsule used for producing beverages comprising the steps of:

• forming a pleated capsule body in a first station;
• supplying a reinforcing element in a second station different from the first station;
• transporting the pleated capsule body from the first station to the second station;
• inserting the pleated capsule body into a first housing;
• inserting the reinforcing element into a second housing;
• positioning the first housing adjacent the second housing, thereby aligning the pleated capsule body with the reinforcing element;
• inserting a welder with an inner opening and having a movable thruster into the pleated capsule body;
• sucking air from the inner opening, whereby the pleated capsule body is held against the movable thruster;
• moving the movable thruster relative to the welder, wherein the welder is held adjacent a selected portion of the pleated capsule body;
• inserting the welder and the pleated capsule body into the reinforcing element to a position where the selected portion of the pleated capsule body is adjacent the reinforcing element;
• and
• welding the pleated capsule body at the selected portion to the reinforcing element with the welder.