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公开(公告)号：US20220205156A1
公开(公告)日：2022-06-30
申请号：US17694867
申请日：2022-03-15
摘要： A spunbonded nonwovens is made by first spinning thermoplastic continuous filaments and emitting them from a spinneret in a direction and then passing the filaments in the direction through a cooling chamber. Meanwhile cooling air is fed from respective manifolds flanking the chamber into the chamber to cool the filaments and the cooling air is guided into the manifolds through respective manifolds and through respective planar homogenizing elements each having a plurality of openings forming a free open surface area constituting 1 to 40% of the total surface area of the respective planar homogenizing element. The cooling air passes from the planar homogenizing element into the cooling chamber through a flow straightener.
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公开(公告)号：US20200157715A1
公开(公告)日：2020-05-21
申请号：US16587105
申请日：2019-09-30
申请人： Detlef FREY , Hans-Georg Geus , Michael Maas , Martin Neuenhofer , Michael Nitschke , Christine Noack , Hartmut Kopp
发明人： Detlef FREY , Hans-Georg Geus , Michael Maas , Martin Neuenhofer , Michael Nitschke , Christine Noack , Hartmut Kopp
摘要： A nonwoven web is made by first depositing fibers as a nonwoven web in a deposition area, then conveying the web away from the deposition area in a web-travel direction, preconsolidating the web in the path, and passing the preconsolidated web between a pair of rollers that compress and final consolidate the preconsolidated web. One of the rollers is separated from the web such that final consolidation of the web at a starting level is stopped and at the same time or immediately beforehand upstream preconsolidation of the web increased. After separating the one roller from the web, another roller is engaged with the web at the consolidation station and then final consolidation is recommenced, whereupon upstream preconsolidation of the web is reduced back to the starting level.
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公开(公告)号：US20210172104A1
公开(公告)日：2021-06-10
申请号：US17154198
申请日：2021-01-21
申请人： Detlef Frey , Martin Neuenhofer , Sebastian Sommer
发明人： Detlef Frey , Martin Neuenhofer , Sebastian Sommer
摘要： An apparatus for making spunbond from continuous thermoplastic filaments has a spinneret for spinning the continuous filaments and advancing them in a filament-travel direction, a cooler for cooling the filaments, a stretcher for stretching the filaments, a depositing device including a foraminous belt extending in a machine direction transverse to the filament-travel direction for deposition of the filaments as a nonwoven web and conveyance away from the stretcher, a diffusor between the stretcher and the foraminous belt so that filaments and primary air from the stretcher enter into the diffusor, and a suction device for extracting air through the foraminous belt at an unobstructed extraction region underneath the diffusor outlet and having a width b in a machine direction that is greater than a width B of the diffusor outlet. The diffusor forms upstream and downstream secondary air-inlet gaps at opposite ends through which secondary air is aspirated into the diffusor.
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公开(公告)号：US20230332342A1
公开(公告)日：2023-10-19
申请号：US18200610
申请日：2023-05-23
摘要： A spunbonded nonwovens is made by first spinning thermoplastic continuous filaments and emitting them from a spinneret in a direction and then passing the filaments in the direction through a cooling chamber. Meanwhile cooling air is fed from respective manifolds flanking the chamber into the chamber to cool the filaments and the cooling air is guided into the manifolds through respective manifolds and through respective planar homogenizing elements each having a plurality of openings forming a free open surface area constituting 1 to 40% of the total surface area of the respective planar homogenizing element. The cooling air passes from the planar homogenizing element into the cooling chamber through a flow straightener.
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公开(公告)号：US11697897B2
公开(公告)日：2023-07-11
申请号：US17694867
申请日：2022-03-15
摘要： A spunbonded nonwovens is made by first spinning thermoplastic continuous filaments and emitting them from a spinneret in a direction and then passing the filaments in the direction through a cooling chamber. Meanwhile cooling air is fed from respective manifolds flanking the chamber into the chamber to cool the filaments and the cooling air is guided into the manifolds through respective manifolds and through respective planar homogenizing elements each having a plurality of openings forming a free open surface area constituting 1 to 40% of the total surface area of the respective planar homogenizing element. The cooling air passes from the planar homogenizing element into the cooling chamber through a flow straightener.
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公开(公告)号：US20230203729A1
公开(公告)日：2023-06-29
申请号：US18118377
申请日：2023-03-07
申请人： Detlef FREY , Martin NEUENHOFER , Sebastian SOMMER
发明人： Detlef FREY , Martin NEUENHOFER , Sebastian SOMMER
摘要： An apparatus for making spunbond from continuous thermoplastic filaments has a spinneret for spinning the continuous filaments and advancing them in a filament-travel direction, a cooler for cooling the filaments, a stretcher for stretching the filaments, a depositing device including a foraminous belt extending in a machine direction transverse to the filament-travel direction for deposition of the filaments as a nonwoven web and conveyance away from the stretcher, a diffusor between the stretcher and the foraminous belt so that filaments and primary air from the stretcher enter into the diffusor, and a suction device for extracting air through the foraminous belt at an unobstructed extraction region underneath the diffusor outlet and having a width b in a machine direction that is greater than a width B of the diffusor outlet. The diffusor forms upstream and downstream secondary air-inlet gaps at opposite ends through which secondary air is aspirated into the diffusor.
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公开(公告)号：US11306421B2
公开(公告)日：2022-04-19
申请号：US16423049
申请日：2019-05-27
摘要： An apparatus for making spunbonded nonwovens has a spinneret for emitting continuous thermoplastic filaments in a filament-travel direction, a cooling chamber downstream in the direction from the spinneret for cooling the spun filaments with cooling air, two manifolds on opposite sides of the cooling chamber opening transversely of the direction into the cooling chamber, and a respective conduit having a conduit cross-sectional area and connected to each manifold for feeding cooling air thereto. The conduit cross-sectional area increases toward the manifold to a manifold cross-sectional area, and manifold cross-sectional area is at least twice as large as the conduit cross-sectional area. At least one flow straightener is provided upstream from the cooling chamber in each manifold for orienting air flow in an air-flow direction, and at least one perforated planar homogenizing element is provided in each manifold for homogenizing the cooling air flow.
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公开(公告)号：US11001942B2
公开(公告)日：2021-05-11
申请号：US16423048
申请日：2019-05-27
摘要： An apparatus for making spunbonded nonwoven has a spinneret for emitting the continuous filaments in a filament-travel direction, a cooling chamber downstream in the direction from the spinneret and receiving the filaments, and two air-supply manifolds flanking the chamber for feeding cooling air thereinto transverse to the direction. A flow straightener for equalizing flow of the cooling air on the filaments is provided in at least one of the air-supply manifolds and has passage walls forming a plurality of flow passages that extend transversely to a filament-travel direction. A flow cross section of the flow straightener is greater than 85% (preferably more than 90%) of a cross-sectional size of the straightener, a ratio of a length L of the flow passages to an inner diameter Di of the flow passages L/Di is 1 to 15.
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公开(公告)号：US11655571B2
公开(公告)日：2023-05-23
申请号：US16587105
申请日：2019-09-30
申请人： Detlef Frey , Hans-Georg Geus , Michael Maas , Martin Neuenhofer , Michael Nitschke , Christine Noack , Hartmut Kopp
发明人： Detlef Frey , Hans-Georg Geus , Michael Maas , Martin Neuenhofer , Michael Nitschke , Christine Noack , Hartmut Kopp
IPC分类号： D04H1/44 , D04H1/559 , D04H1/64 , D04H1/724 , D21G1/00 , D04H3/14 , D01D5/08 , D01D5/098 , D01H3/00 , D01H3/16
CPC分类号： D04H1/44 , D01D5/08 , D01D5/0985 , D01H3/00 , D01H3/16 , D04H1/559 , D04H1/64 , D04H1/724 , D04H3/14 , D21G1/00
摘要： A nonwoven web is made by first depositing fibers as a nonwoven web in a deposition area, then conveying the web away from the deposition area in a web-travel direction, preconsolidating the web in the path, and passing the preconsolidated web between a pair of rollers that compress and final consolidate the preconsolidated web, One of the rollers is separated from the web such that final consolidation of the web at a starting level is stopped and at the same time or immediately beforehand upstream preconsolidation of the web increased. After separating the one roller from the web, another roller is engaged with the web at the consolidation station and then final consolidation is recommenced, whereupon upstream preconsolidation of the web is reduced back to the starting level.
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公开(公告)号：US11603614B2
公开(公告)日：2023-03-14
申请号：US17154198
申请日：2021-01-21
申请人： Detlef Frey , Martin Neuenhofer , Sebastian Sommer
发明人： Detlef Frey , Martin Neuenhofer , Sebastian Sommer
摘要： An apparatus for making spunbond from continuous thermoplastic filaments has a spinneret for spinning the continuous filaments and advancing them in a filament-travel direction, a cooler for cooling the filaments, a stretcher for stretching the filaments, a depositing device including a foraminous belt extending in a machine direction transverse to the filament-travel direction for deposition of the filaments as a nonwoven web and conveyance away from the stretcher, a diffusor between the stretcher and the foraminous belt so that filaments and primary air from the stretcher enter into the diffusor, and a suction device for extracting air through the foraminous belt at an unobstructed extraction region underneath the diffusor outlet and having a width b in a machine direction that is greater than a width B of the diffusor outlet. The diffusor forms upstream and downstream secondary air-inlet gaps at opposite ends through which secondary air is aspirated into the diffusor.
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