Method and apparatus for forming a nonwoven fibrous web
专利汇可以提供Method and apparatus for forming a nonwoven fibrous web专利检索，专利查询，专利分析的服务。并且A method of forming a nonwoven fibrous web from multiple laps of staple fibers, the major proportion of fibers within each lap being substantially oriented in one direction. Laps of the staple fibers are fed into overlying relationship with the major proportion of oriented fibers in each lap disposed in the same direction. Air is entrapped between adjacent laps as they are fed into overlying relationship to create an air barrier between adjacent overlying laps. The overlying laps are spread transversely of the direction in which the major proportion of fibers are oriented, and fibers within overlying laps are reoriented transversely within the plane of the laps out of the direction in which the major proportion of fibers are oriented while maintaining the air barrier between the adjacent overlying laps. The laps are pressed together after the lap spreading and fiber reorienting steps to form a unitary nonwoven fibrous web and fibers of the unitary nonwoven fibrous web are then bonded together. An apparatus for forming a nonwoven fibrous web from multiple laps of staple fibers, the major proportion of fibers within each lap being substantially oriented in one direction. Lap forming means for forming the laps of staple fibers and for generating air currents. A lap-confining channel is defined in part by a lower, air-impervious conveyor belt, and a shield encloses the downstream end of each lap forming means and defines an enclosed flow path from the lap forming means to the lap-confining channel. The enclosed flow path permits the laps of staple fibers to be directed into overlying relationship with each other within the lap-confining channel and aids in establishing laminar flow of the air currents into the lap-confining channel to define air barriers between adjacent laps, and between the conveyor belt and lower lap. The conveyor belt feeds the overlying laps to a spreading and reorienting means disposed downstream of the lap forming means for spreading the overlying laps transversely of their direction of feed and for reorienting fibers within overlying laps transversely within the plane of respective laps out of the direction in which the major proportion of fibers are oriented while maintaining the air barrier between the adjacent overlying laps. Calendering means disposed downstream of the spreading and reorienting means for pressing the overlying laps together to form a unitary nonwoven fibrous web, and bonding means disposed downstream of the calendering means for bonding together fibers of the unitary nonwoven fibrous web.，下面是Method and apparatus for forming a nonwoven fibrous web专利的具体信息内容。
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