| 摘要 |
The present invention relates to an apparatus for forming air-laid absorbent cores (15,16), comprising a first and second mat-forming wheel (1,2), each of the mat-forming wheels having a series of moulds (3,4) along their peripheral surface, air-laying means (6,10 and 8,12) for supplying air-entrained fibrous material to the moulds on each mat-forming wheel, suction means (13,14) maintaining the formed core elements in the respective moulds during a part of the path of the moulds on the respective mat-forming wheel and means for transferring a core element (16) on the second mat-forming wheel onto a core element (15) on the first mat-forming wheel while the latter core element still is maintained in its mould, at least the air-laying means (8,12) associated with the second mat-forming wheel comprises means for supplying a mixture of air-entrained fibrous material and discrete particles. According to the invention means (5,9 and 7,11) are arranged for applying a protective layer (22,23) to the bottom of each mould (3,4) of at least the second mat-forming wheel (2), which protective layer (22,23) has the function of protecting the mould from discrete particles during air-laying of a mixture of air-entrained fibrous material and discrete particles and for preventing discrete particles from exit out of the second core element during and after transfer, and the two mat-forming wheels (1,2) forms such a nip between each other that the second core element (16) will abut the first core element (15) before transfer. |
