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公开(公告)号：US5955012A
公开(公告)日：1999-09-21
申请号：US950942
申请日：1997-10-16
CPC分类号： B65H18/26 , B65H18/16 , D04H3/07 , B65H2701/177 , Y10T156/1087 , Y10T156/12
摘要： Substantially constant tension is maintained on a melt-blown nonwoven fibrous sheet by mounting the sheet take-up roller for longitudinal movements relative so as to accommodate the increasing diameter of the sheet material being wound convolutely on the take-up roller. Sheet tension during production is thereby maintained substantially constant by virtue of a continual increase in the longitudinal distance (in relation to the machine direction) between the fiber collection mandrel and the take-up roll. Preferably, tension control is achieved by a pneumatic pressure-regulating system which includes at least one rotatable press roller which is longitudinally fixed in position relative to the collection mandrel and is in contact with the sheet material being wound around the take-up roll. The take-up roller is pneumatically advanced toward the press roller by the pneumatic actuation of at least one air cylinder. Thus, as the diameter of the sheet material being wound around the take-up roll increases, the pneumatic ram of the air cylinder will cause the pneumatic pressure of the air cylinder to correspondingly increase. This increase in pneumatic pressure is sensed by a pneumatic pressure regulator which vents sufficiently to decrease the pneumatic pressure acting on the air cylinder to a predetermined set point pressure. In this manner, the pressure exerted on the sheet material between the positionally fixed press roller and the longitudinally movable take-up roller is maintained substantially constant during production of the nonwoven sheet material.
摘要翻译： 通过安装用于纵向移动的片材卷取辊以保持缠绕在卷取辊上的片材的直径增加，在熔喷非织造纤维片材上保持基本上恒定的张力。 由于纤维收集心轴和卷取辊之间的纵向距离（相对于机器方向）的持续增加，生产期间的片张力由此保持基本恒定。 优选地，张力控制通过气动压力调节系统来实现，所述气动压力调节系统包括至少一个可旋转的压辊，所述至少一个可旋转的压辊相对于收集心轴纵向地固定在适当的位置，并与缠绕在卷取辊上的片材接触。 卷取辊通过至少一个气缸的气动驱动而朝向压辊气动地前进。 因此，随着缠绕在卷取辊上的片材的直径增加，气缸的气动冲杆将导致气缸的气动压力相应地增加。 通过气动压力调节器感测气压的这种增加，气动压力调节器充分排气以将作用在气缸上的气压降低到预定的设定点压力。 以这种方式，在非织造片材的生产期间，施加在位置固定的压辊和纵向移动的卷取辊之间的片材的压力保持基本上恒定。
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公开(公告)号：US5829708A
公开(公告)日：1998-11-03
申请号：US725258
申请日：1996-10-02
CPC分类号： B65H18/26 , B65H18/16 , D04H3/07 , B65H2701/177 , Y10T156/1087 , Y10T156/12
摘要： Substantially constant tension is maintained on a melt-blown nonwoven fibrous sheet by mounting the sheet take-up roller for longitudinal movements relative so as to accommodate the increasing diameter of the sheet material being wound convolutely on the take-up roller. Sheet tension during production is thereby maintained substantially constant by virtue of a continual increase in the longitudinal distance (in relation to the machine direction) between the fiber collection mandrel and the take-up roll. Preferably, tension control is achieved by a pneumatic pressure-regulating system which includes at least one rotatable press roller which is longitudinally fixed in position relative to the collection mandrel and is in contact with the sheet material being wound around the take-up roll. The take-up roller is pneumatically advanced toward the press roller by the pneumatic actuation of at least one air cylinder. Thus, as the diameter of the sheet material being wound around the take-up roll increases, the pneumatic ram of the air cylinder will cause the pneumatic pressure of the air cylinder to correspondingly increase. This increase in pneumatic pressure is sensed by a pneumatic pressure regulator which vents sufficiently to decrease the pneumatic pressure acting on the air cylinder to a predetermined set point pressure. In this manner, the pressure exerted on the sheet material between the positionally fixed press roller and the longitudinally movable take-up roller is maintained substantially constant during production of the nonwoven sheet material.
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公开(公告)号：US06662842B2
公开(公告)日：2003-12-16
申请号：US09941674
申请日：2001-08-30
申请人： Brian Mozelack , Robert J. Schmitt , Steven D. Barboza , Praveen Jana , Son Ngoc Nguyen , Ronald R. Gschwandtner , Robert D. Connor , Timothy W. Yingling
发明人： Brian Mozelack , Robert J. Schmitt , Steven D. Barboza , Praveen Jana , Son Ngoc Nguyen , Ronald R. Gschwandtner , Robert D. Connor , Timothy W. Yingling
IPC分类号： B32B3100
CPC分类号： B01D46/0001 , B01D46/2411 , Y10T156/12 , Y10T428/139
摘要： Filter cartridges may have a core element formed of a non-filtering, self-supporting non-woven mass of indefinite length continuous synthetic polymeric core fibers, and at least one annular filtration zone layer formed of a mass of non-woven indefinite length continuous synthetic polymeric filtration fibers. The non-woven core element is most preferably formed in situ during filter cartridge manufacturing by melt-blowing synthetic polymeric core fiber streams toward a forming mandrel. The non-woven core element is completely solidified prior to the filtration zone fibers being melt-blown thereon so that the core and filtration fibers are predominantly mechanically interlocked with one another, instead of being melt-bonded thereto. Filter cartridges of predetermined length may be cut from an upstream filter cartridge preform of indefinite length by subjecting the preform to forced cooling air to thereby minimize (if not eliminate entirely) significant filter cartridge shrinkage over time. In addition, a cutter assembly may be mounted laterally of the preform, but is capable of rate-synchronized longitudinal movement with the preform during its cutting operation.
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公开(公告)号：US06342283B1
公开(公告)日：2002-01-29
申请号：US09358886
申请日：1999-07-22
申请人： Brian Mozelack , Robert J. Schmitt , Steven D. Barboza , Praveen Jana , Son Ngoc Nguyen , Ronald R. Gschwandtner , Robert D. Connor , Timothy W. Yingling
发明人： Brian Mozelack , Robert J. Schmitt , Steven D. Barboza , Praveen Jana , Son Ngoc Nguyen , Ronald R. Gschwandtner , Robert D. Connor , Timothy W. Yingling
IPC分类号： B01D2913
CPC分类号： B01D46/0001 , B01D46/2411 , Y10T156/12 , Y10T428/139
摘要： Filter cartridges may have a core element formed of a non-filtering, self-supporting non-woven mass of indefinite length continuous synthetic polymeric core fibers, and at least one annular filtration zone layer formed of a mass of non-woven indefinite length continuous synthetic polymeric filtration fibers. The non-woven core element is most preferably formed in situ during filter cartridge manufacturing by melt-blowing synthetic polymeric core fiber streams toward a forming mandrel. The non-woven core element is completely solidified prior to the filtration zone fibers being melt-blown thereon so that the core and filtration fibers are predominantly mechanically interlocked with one another, instead of being melt-bonded thereto. Filter cartridges of predetermined length may be cut from an upstream filter cartridge preform of indefinite length by subjecting the preform to forced cooling air to thereby minimize (if not eliminate entirely) significant filter cartridge shrinkage over time. In addition, a cutter assembly may be mounted laterally of the preform, but is capable of rate-synchronized longitudinal movement with the preform during its cutting operation.
摘要翻译： 过滤筒可以具有由非过滤自支撑的无限长度的连续合成聚合物芯纤维的非织造织物形成的芯部元件，以及至少一个环形过滤区层，其由大量无定形长度的连续合成纤维 聚合物过滤纤维。 非织造芯元件最优选在通过将合成聚合物芯纤维流熔化成成型心轴的过滤器滤芯制造期间原位形成。 在过滤区域纤维被熔融吹塑之前，无纺芯芯元件完全固化，使得芯和过滤纤维主要彼此机械地互锁，而不是与其熔融粘结。 预定长度的过滤筒可以通过使预成型坯经受强制冷却空气从而从不确定长度的上游过滤器滤芯预制件切割，从而使显着的滤筒随时间的收缩最小化（如果不是完全消除）。 此外，切割器组件可以在预成型件的侧面安装，但是在切割操作期间能够与预成型件进行速率同步的纵向移动。
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