MACHINE AND METHOD FOR MAKING ABSORBENT SANITARY ARTICLES

摘要

This invention relates to a machine for making absorbent sanitary articles comprising at least an impermeable outer layer and an absorbent pad superposed on the outer layer. The machine comprises at least a feeding line for feeding the outer layer and a forming unit (110) for forming the absorbent pad. The forming unit (110) comprises: first feeding means (111) for feeding a first web (NW1) of non-woven fabric; second feeding means for feeding a second web of non-woven fabric; a joining station for joining the first web (NW1) to the second web of non-woven fabric; a metering and depositing station where at least one distribution of absorbent polymeric material (SAP) is deposited on the first web (NW1) of non-woven fabric; The metering and depositing station comprises: a containing and feeding unit (112) for the absorbent polymeric material (SAP) upstream of the first feeding means (111) for feeding the first web (NW1); metering and transferring means (113) for the absorbent polymeric material (SAP), these metering and transferring means (113) being interposed between the containing and feeding unit (112) and the first feeding means (111) and being provided with a plurality of calibrated cavities (114) on the outer surface. The containing and feeding unit (112) feeds the absorbent polymeric material (SAP) to the metering and transferring means (113) and the calibrated cavities (114) volumetrically meter the absorbent polymeric material (SAP) on the first web (NW1) of non-woven fabric.