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公开(公告)号：US08562786B2
公开(公告)日：2013-10-22
申请号：US13460891
申请日：2012-05-01
CPC分类号： D21F11/14 , B31F1/126 , D21H25/005 , D21H27/002 , D21H27/005 , D21H27/008 , Y10T428/24446 , Y10T428/24455 , Y10T428/24479 , Y10T428/249965
摘要： A method of making a fabric-creped absorbent cellulosic sheet. A papermaking furnish is compactively dewatered to form a nascent web. The nascent web is applied to a translating transfer surface and is fabric-creped from the transfer surface at a consistency of from about 30 to about 60 percent utilizing a creping fabric. The creping fabric travels at a fabric speed that is slower than the speed of the transfer surface. The nascent web is creped from the transfer surface and redistributed on the creping fabric to form a creped web with a drawable reticulum having a plurality of interconnected regions of different local basis weights. The creped web is dried to form a dried web, and the dried web is drawn. The drawing step includes drawing the dried web between a first draw roll and a second draw roll.
摘要翻译： 制造织物起皱吸收性纤维素片材的方法。 造纸配料被紧密脱水以形成新生网。 初生纤维网被施加到平移转印表面，并且利用起皱织物以约30至约60％的稠度从转印表面织物起皱。 起皱织物以比转印表面的速度慢的织物速度行进。 新生的纤维网从转移表面起皱并重新分布在起皱织物上以形成具有可拉网的起皱纤维网，其具有不同局部基重的多个相互连接的区域。 将起皱纤维网干燥以形成干燥的纤维网，并且拉伸干燥的纤维网。 拉伸步骤包括在第一拉伸辊和第二拉伸辊之间拉伸干燥的纤维网。
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公开(公告)号：US07670457B2
公开(公告)日：2010-03-02
申请号：US12286435
申请日：2008-09-30
IPC分类号： B31F1/12
CPC分类号： D21F11/14 , B31F1/126 , D21H25/005 , D21H27/002 , D21H27/005 , D21H27/008 , Y10T428/24446 , Y10T428/24455 , Y10T428/24479 , Y10T428/249965
摘要： A method of making a cellulosic web includes: forming a nascent web from a papermaking furnish, the nascent web having a generally random distribution of papermaking fiber; b) transferring the web having a generally random distribution of papermaking fiber to a translating transfer surface moving at a first speed; drying the web to a consistency of from about 30 to about 60 percent including compactively dewatering the web prior to or concurrently with transfer to the transfer surface; fabric-creping the web from the transfer surface at a consistency of from about 30 to about 60 percent utilizing a creping fabric with a patterned creping surface, the fabric creping step occurring under pressure in a fabric creping nip defined between the transfer surface and the creping fabric wherein the fabric is traveling at a second speed slower than the speed of said transfer surface, the fabric pattern, nip parameters, velocity delta and web consistency being selected such that the web is creped from the transfer surface and redistributed on the creping fabric such that the web has a plurality of fiber-enriched regions arranged in a pattern corresponding to the patterned creping surface of the fabric, optionally drying the wet web while it is held in the creping fabric. Preferably, the formed web is characterized in that its void volume increases upon drawing.
摘要翻译： 制造纤维素网的方法包括：从造纸配料形成初生纤维网，初生纤维网通常具有造纸纤维的随机分布; b）将具有大致随机分布的造纸纤维的幅材转印到以第一速度移动的平移转印表面; 将幅材干燥至约30％至约60％的稠度，包括在转移到转印表面之前或同时转移至纸幅上的压实脱水; 织物使用具有图案化的起皱表面的起皱织物以约30至约60％的稠度从转印表面起皱织物，织物起皱步骤在压力下在织物起皱辊隙中发生，所述织物起皱辊隙限定在转移表面和起皱之间 织物，其中织物以比所述转移表面的速度慢的第二速度行进，织物图案，辊隙参数，速度增量和幅材稠度被选择为使得纤维网从转印表面起皱并重新分布在起皱织物上，如 纤维网具有以对应于织物的图案化起皱表面的图案布置的多个纤维富集区域，任选地在湿纸幅被保持在起皱织物中时干燥。 优选地，所形成的纤维网的特征在于其拉伸时其空隙体积增加。
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3.发明授权公开(公告)号：US07442278B2
公开(公告)日：2008-10-28
申请号：US11108458
申请日：2005-04-18
CPC分类号： D21F11/14 , B31F1/126 , D21H25/005 , D21H27/002 , D21H27/005 , D21H27/008 , Y10T428/24446 , Y10T428/24455 , Y10T428/24479 , Y10T428/249965
摘要： A method of making a cellulosic web includes: forming a nascent web from a papermaking furnish, the nascent web having a generally random distribution of papermaking fiber; b) transferring the web having a generally random distribution of papermaking fiber to a translating transfer surface moving at a first speed; drying the web to a consistency of from about 30 to about 60 percent including compactively dewatering the web prior to or concurrently with transfer to the transfer surface; fabric-creping the web from the transfer surface at a consistency of from about 30 to about 60 percent utilizing a creping fabric with a patterned creping surface, the fabric creping step occurring under pressure in a fabric creping nip defined between the transfer surface and the creping fabric wherein the fabric is traveling at a second speed slower than the speed of said transfer surface, the fabric pattern, nip parameters, velocity delta and web consistency being selected such that the web is creped from the transfer surface and redistributed on the creping fabric such that the web has a plurality of fiber-enriched regions arranged in a pattern corresponding to the patterned creping surface of the fabric, optionally drying the wet web while it is held in the creping fabric. Preferably, the formed web is characterized in that its void volume increases upon drawing.
摘要翻译： 制造纤维素网的方法包括：从造纸配料形成初生纤维网，初生纤维网通常具有造纸纤维的随机分布; b）将具有大致随机分布的造纸纤维的幅材转印到以第一速度移动的平移转印表面; 将幅材干燥至约30％至约60％的稠度，包括在转移到转印表面之前或同时转移至纸幅上的压实脱水; 织物使用具有图案化的起皱表面的起皱织物以约30至约60％的稠度从转印表面起皱织物，织物起皱步骤在压力下在织物起皱辊隙中发生，该织物起皱辊隙限定在转移表面和起皱之间 织物，其中织物以比所述转移表面的速度慢的第二速度行进，织物图案，辊隙参数，速度增量和幅材稠度被选择为使得纤维网从转印表面起皱并重新分布在起皱织物上，如 纤维网具有以对应于织物的图案化起皱表面的图案布置的多个纤维富集区域，任选地在湿纸幅被保持在起皱织物中时干燥。 优选地，所形成的纤维网的特征在于其拉伸时其空隙体积增加。
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4.发明授权公开(公告)号：US07416637B2
公开(公告)日：2008-08-26
申请号：US11167348
申请日：2005-06-27
申请人： Frank C. Murray , Greg A. Wendt
发明人： Frank C. Murray , Greg A. Wendt
CPC分类号： D21H27/002 , B31F1/126 , D21F3/0254 , D21F11/006 , D21F11/14
摘要： A low-compaction method of making an absorbent cellulosic web includes: forming a nascent web from a papermaking furnish; dewatering the nascent web to a consistency of from about 10 to about 30 percent on a foraminous forming support traveling at a first speed; rush-transferring the web at a consistency of from 10 to about 30 percent to an open texture fabric traveling at a second speed slower than the first speed of the forming support; further dewatering the web on the impression fabric to a consistency of from about 30 to about 60 percent by way of (i) combining the open texture fabric bearing said web with a fluid distribution membrane and an anti-rewet felt as the three pass through a nip into a pressure chamber defined in part by a plurality of nip rolls, the fluid distribution membrane bearing against the side of the open texture fabric away from the web, with the anti-rewet felt bearing against the web, and (ii) applying a pneumatic pressure gradient from the distributor membrane through the web thereby dewatering the web; and drying the web. Preferably the process includes the steps of selecting the papermaking furnish and controlling the process such that the dried web has a void volume fraction of at least 0.7, a hydraulic diameter in the range of from about 3 to about 20 microns and a Wet Springback Ratio of at least about 0.65. Optionally provided is a high solids fabric crepe in a pressure nip.
摘要翻译： 制造吸收性纤维素网的低压实方法包括：从造纸配料形成新生网; 在初始速度下移动的多孔成形支撑件上将初生纤维网脱水至约10％至约30％的稠度; 以相对于成形支撑件的第一速度慢的第二速度行进的开放纹理织物以10％至约30％的一致性将幅材冲压转移; 通过（i）将带有所述纤维网的开放纹理织物与流体分布膜和防再润湿毡组合起来，将印模织物上的幅材进一步脱水至约30至约60％的稠度， 夹持在由多个压辊部分限定的压力室中，流体分配膜抵靠打开的织物织物远离纸幅的方向承载，抗再湿润毡轴承抵靠纸幅，并且（ii）施加 从分配器膜通过纤维网的气动压力梯度，从而使幅材脱水; 并干燥网。 优选地，该方法包括选择造纸配料并控制该方法的步骤，使得干燥的幅材具有至少0.7的空隙体积分数，约3至约20微米的水力直径和湿回弹比 至少约0.65。 任选地，在压力压区中提供高固体织物绉纹。
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公开(公告)号：US08568559B2
公开(公告)日：2013-10-29
申请号：US13460936
申请日：2012-05-01
CPC分类号： D21F11/14 , B31F1/126 , D21H25/005 , D21H27/002 , D21H27/005 , D21H27/008 , Y10T428/24446 , Y10T428/24455 , Y10T428/24479 , Y10T428/249965
摘要： A method of making a cellulosic absorbent sheet. A cellulosic web is prepared from an aqueous papermaking furnish. The web is fabric-creped. The fabric-creping step forms a creped web with a drawable reticulum having a plurality of interconnected regions of different local basis weights including at least: (i) a plurality of fiber-enriched regions of a relatively high local basis weight, interconnected by way of (ii) a plurality of lower local basis weight linking regions. The drawable reticulum includes a cohesive fiber matrix capable of increasing in void volume upon drawing. The creped web is dried, while substantially preserving the drawable reticulum, to form a dried web, and the dried web is drawn. The drawing step increases the void volume of the dried web.
摘要翻译： 制造纤维素吸收片的方法。 由水性造纸配料制备纤维素网。 网状织物起皱。 织物起皱步骤形成具有可拉伸网状物的起皱网状物，其具有多个不同局部基重的相互连接的区域，至少包括：（i）多个相对较高的局部基重的纤维富集区域，其通过 （ii）多个下部局部基重连接区域。 可拉伸网状物包括能够在拉伸时空隙体积增加的内聚纤维基体。 将起皱纤维网干燥，同时基本上保留可拉伸网状物，以形成干燥的纤维网，并且拉伸干燥的纤维网。 拉伸步骤增加了干燥纤维网的空隙体积。
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6.发明授权公开(公告)号：US08435381B2
公开(公告)日：2013-05-07
申请号：US13460885
申请日：2012-05-01
IPC分类号： B31F1/16
CPC分类号： D21F11/14 , B31F1/126 , D21H25/005 , D21H27/002 , D21H27/005 , D21H27/008 , Y10T428/24446 , Y10T428/24455 , Y10T428/24479 , Y10T428/249965
摘要： An absorbent fabric-creped cellulosic web includes a plurality of fiber-enriched regions of a relatively high local basis weight, interconnected by way of a plurality of lower local basis weight linking regions. The fiber-enriched regions comprise a plurality of microfolds with fold lines extending transverse to the machine direction (MD).
摘要翻译： 吸收性织物起皱纤维素纤维网包括多个相对较高的局部基重的富含纤维的区域，其通过多个下部局部基重重量连接区域相互连接。 纤维富集区域包括多个具有横向于机器方向（MD）延伸的折叠线的微型塑料。
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公开(公告)号：US20120211187A1
公开(公告)日：2012-08-23
申请号：US13460940
申请日：2012-05-01
IPC分类号： D21H23/00
CPC分类号： D21F11/14 , B31F1/126 , D21H25/005 , D21H27/002 , D21H27/005 , D21H27/008 , Y10T428/24446 , Y10T428/24455 , Y10T428/24479 , Y10T428/249965
摘要： A method of making a cellulosic absorbent sheet. A cellulosic web is prepared from an aqueous papermaking furnish. The web is fabric-creped. The fabric-creping step forms a creped web with a drawable reticulum having a plurality of interconnected regions of different local basis weights including at least: (i) a plurality of fiber-enriched regions of a relatively high local basis weight, interconnected by way of (ii) a plurality of lower local basis weight linking regions. The drawable reticulum includes a cohesive fiber matrix capable of increasing in void volume upon drawing. The creped web is dried, while substantially preserving the drawable reticulum, to form a dried web, and the dried web is drawn. The drawing step increases the bulk of the dried web.
摘要翻译： 制造纤维素吸收片的方法。 由水性造纸配料制备纤维素网。 网状织物起皱。 织物起皱步骤形成具有可拉伸网状物的起皱网状物，其具有多个不同局部基重的相互连接的区域，至少包括：（i）多个相对较高的局部基重的纤维富集区域，其通过 （ii）多个下部局部基重连接区域。 可拉伸网状物包括能够在拉伸时空隙体积增加的内聚纤维基体。 将起皱纤维网干燥，同时基本上保留可拉伸网状物，以形成干燥的纤维网，并且拉伸干燥的纤维网。 拉伸步骤增加了干燥幅材的体积。
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8.发明授权公开(公告)号：US08226797B2
公开(公告)日：2012-07-24
申请号：US13041706
申请日：2011-03-07
CPC分类号： D21F11/14 , B31F1/126 , D21H25/005 , D21H27/002 , D21H27/005 , D21H27/008 , Y10T428/24446 , Y10T428/24455 , Y10T428/24479 , Y10T428/249965
摘要： A method of making a fabric-creped absorbent cellulosic sheet. A papermaking furnish is compactively dewatered to form a nascent web having an apparently random distribution of papermaking fiber. The dewatered web is applied to a translating transfer surface. The web is fabric-creped from the transfer surface at a consistency of from about 30 to about 60 percent utilizing a creping fabric, under pressure, in a fabric creping nip defined between the transfer surface and the creping fabric. The fabric is traveling a fabric speed that is slower than the speed of the transfer surface. The web is creped from the transfer surface and redistributed on the creping fabric to form a web with a drawable reticulum having a plurality of interconnected regions of different local basis weights. The web is dried and the web is drawn. The step of drawing the web preferentially attenuates the fiber-enriched regions of the web.
摘要翻译： 制造织物起皱吸收性纤维素片材的方法。 造纸配料被紧密地脱水以形成具有造纸纤维的显然随机分布的初生纤维网。 脱水网被施加到平移传送表面。 织物在织物起皱辊隙中，在转移表面和起皱织物之间，在压力下，以约30至约60％的稠度从织物起皱。 织物行进的织物速度比转印表面的速度慢。 幅材从转印表面起皱并重新分布在起皱织物上以形成具有可拉网状物的网，该网具有具有不同局部基重的多个相互连接的区域。 纸幅被干燥并且纸幅被拉伸。 拉伸纤维网的步骤优先地减弱纤维网的纤维富集区域。
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公开(公告)号：US20110155337A1
公开(公告)日：2011-06-30
申请号：US13041706
申请日：2011-03-07
IPC分类号： B31F1/12
CPC分类号： D21F11/14 , B31F1/126 , D21H25/005 , D21H27/002 , D21H27/005 , D21H27/008 , Y10T428/24446 , Y10T428/24455 , Y10T428/24479 , Y10T428/249965
摘要： A method of making a cellulosic web includes: forming a nascent web from a papermaking furnish, the nascent web having a generally random distribution of papermaking fiber; b) transferring the web having a generally random distribution of papermaking fiber to a translating transfer surface moving at a first speed; drying the web to a consistency of from about 30 to about 60 percent including compactively dewatering the web prior to or concurrently with transfer to the transfer surface; fabric-creping the web from the transfer surface at a consistency of from about 30 to about 60 percent utilizing a creping fabric with a patterned creping surface, the fabric creping step occurring under pressure in a fabric creping nip defined between the transfer surface and the creping fabric wherein the fabric is traveling at a second speed slower than the speed of said transfer surface, the fabric pattern, nip parameters, velocity delta and web consistency being selected such that the web is creped from the transfer surface and redistributed on the creping fabric such that the web has a plurality of fiber-enriched regions arranged in a pattern corresponding to the patterned creping surface of the fabric, optionally drying the wet web while it is held in the creping fabric. Preferably, the formed web is characterized in that its void volume increases upon drawing.
摘要翻译： 制造纤维素网的方法包括：从造纸配料形成初生纤维网，初生纤维网通常具有造纸纤维的随机分布; b）将具有大致随机分布的造纸纤维的幅材转印到以第一速度移动的平移转印表面; 将幅材干燥至约30％至约60％的稠度，包括在转移到转印表面之前或同时转移至纸幅上的压实脱水; 织物使用具有图案化的起皱表面的起皱织物以约30至约60％的稠度从转印表面起皱织物，织物起皱步骤在压力下在织物起皱辊隙中发生，所述织物起皱辊隙限定在转移表面和起皱之间 织物，其中织物以比所述转移表面的速度慢的第二速度行进，织物图案，辊隙参数，速度增量和幅材稠度被选择为使得纤维网从转印表面起皱并重新分布在起皱织物上，如 纤维网具有以对应于织物的图案化起皱表面的图案布置的多个纤维富集区域，任选地在湿纸幅被保持在起皱织物中时干燥。 优选地，所形成的纤维网的特征在于其拉伸时其空隙体积增加。
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公开(公告)号：US20100126682A1
公开(公告)日：2010-05-27
申请号：US12657645
申请日：2010-01-25
IPC分类号： D21H15/04
CPC分类号： D21F11/14 , B31F1/126 , D21H25/005 , D21H27/002 , D21H27/005 , D21H27/008 , Y10T428/24446 , Y10T428/24455 , Y10T428/24479 , Y10T428/249965
摘要： A method of making a cellulosic web includes: forming a nascent web from a papermaking furnish, the nascent web having a generally random distribution of papermaking fiber; b) transferring the web having a generally random distribution of papermaking fiber to a translating transfer surface moving at a first speed; drying the web to a consistency of from about 30 to about 60 percent including compactively dewatering the web prior to or concurrently with transfer to the transfer surface; fabric-creping the web from the transfer surface at a consistency of from about 30 to about 60 percent utilizing a creping fabric with a patterned creping surface, the fabric creping step occurring under pressure in a fabric creping nip defined between the transfer surface and the creping fabric wherein the fabric is traveling at a second speed slower than the speed of said transfer surface, the fabric pattern, nip parameters, velocity delta and web consistency being selected such that the web is creped from the transfer surface and redistributed on the creping fabric such that the web has a plurality of fiber-enriched regions arranged in a pattern corresponding to the patterned creping surface of the fabric, optionally drying the wet web while it is held in the creping fabric. Preferably, the formed web is characterized in that its void volume increases upon drawing.
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