Absorbent sheet
    1.
    发明申请
    Absorbent sheet 有权
    吸水片

    公开(公告)号:US20080008860A1

    公开(公告)日:2008-01-10

    申请号:US11901673

    申请日:2007-09-18

    IPC分类号: B31F1/12 D21H11/00

    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。

    Process for producing absorbent sheet
    2.
    发明申请
    Process for producing absorbent sheet 有权
    生产吸收性片材的方法

    公开(公告)号:US20080047675A1

    公开(公告)日:2008-02-28

    申请号:US11901599

    申请日:2007-09-18

    IPC分类号: D21H11/00

    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。

    High solids fabric crepe process for producing absorbent sheet with in-fabric drying
    3.
    发明申请
    High solids fabric crepe process for producing absorbent sheet with in-fabric drying 有权
    用于生产具有织物干燥的吸收性片材的高固含量织物起皱方法

    公开(公告)号:US20050279471A1

    公开(公告)日:2005-12-22

    申请号:US11151761

    申请日:2005-06-14

    摘要: A method of making a fabric-creped absorbent cellulosic sheet is provided which includes dewatering a papermaking furnish and partially drying the web without wet-pressing before applying it to a translating transfer surface moving at a first speed. The process further includes fabric-creping the web from the transfer surface at a consistency of from about 30 to about 60 percent utilizing a creping fabric, the creping step occurring under pressure in a 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 surface and redistributed on the creping fabric. After creping, the web is dried, preferably with a plurality of can dryers to a consistency of at least about 90 percent while it is held in the creping fabric.

    摘要翻译: 提供了一种制造织物起皱吸收性纤维素片材的方法,其包括使造纸配料脱水并且在将其施加到以第一速度移动的平移转移面之前不进行湿压部分干燥。 该方法还包括使用起皱织物以约30至约60%的稠度从转印表面织物卷起纸幅,起皱步骤在转印表面和起皱织物之间限定的起皱辊隙中在压力下发生,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,速度三角形和幅材一致性被选择为使得幅材从表面起皱并重新分布在起皱织物上。 在起皱之后,将纸幅干燥,优选用多个罐式烘干机将其保持在起皱织物中至少约90%的稠度。

    Fabric crepe and in fabric drying process for producing absorbent sheet
    4.
    发明申请
    Fabric crepe and in fabric drying process for producing absorbent sheet 有权
    织物绉纱和织物干燥工艺用于生产吸收性片材

    公开(公告)号:US20050241787A1

    公开(公告)日:2005-11-03

    申请号:US11108458

    申请日:2005-04-18

    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。

    Low compaction, pneumatic dewatering process for producing absorbent sheet
    5.
    发明申请
    Low compaction, pneumatic dewatering process for producing absorbent sheet 有权
    低压缩,气动脱水工艺生产吸收片

    公开(公告)号:US20060000567A1

    公开(公告)日:2006-01-05

    申请号:US11167348

    申请日:2005-06-27

    IPC分类号: B31F1/12

    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。