Patent ID: 6807793
Filing Date: 2004-10-26
Classification: B65B,B65D

Abstract:
An apparatus for preparing and feeding materials used to make a filter bag (1) to contain an infusion product, the apparatus comprising the following arranged in succession around the edge of a power-driven revolving wheel (70):first means (71) for forming filter bag (1) pick-up tags (6) from a web (39) of suitable material and arranging them in suitable order around the edge of the revolving wheel (70); second means (72) for feeding a continuous thread (31) and forming in it first loops (10) at regular intervals from each other at positions corresponding to the pick-up tags (6) carried by the revolving wheel (70); third means (73) acting on the tags (6) for delimiting separate faces (9a, 9b) on each tag (6) and folding these faces (9a, 9b) onto each other in such a way that the first loops (10) of thread are held between the faces (9a, 9b) of the tags (6); fourth means (74) for joining the faces (9a, 9b) of each tag (6) to each other; fifth means (75) for associating a web (17) of filter paper to the edge of the revolving wheel (70) and positioning it above the continuous thread (31) and the tags (6) connected to it; sixth means (76) associated with the revolving wheel (70) for pushing a portion (7) of the continuous thread stretched on the edge of the wheel (70) through the web (17) of filter paper in such a way as to form a second loop (11) extending outwards from the wheel (70) and protruding from a face of the filter paper web (17) opposite the face adjoining the tags (6).