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    Absorbent foam
    1.
    发明授权
    Absorbent foam 失效
    吸水泡沫

    公开(公告)号：US5985434A

    公开(公告)日：1999-11-16

    申请号：US977918

    申请日：1997-11-25

    申请人： Jian Qin ,  Palani Raj Ramaswami Wallajapet ,  Gary D. Williams

    发明人： Jian Qin ,  Palani Raj Ramaswami Wallajapet ,  Gary D. Williams

    IPC分类号： A61L15/22 ,  A61L15/42 ,  C08J9/28 ,  A61F13/15 ,  B32B3/26

    CPC分类号： C08J9/28 ,  A61L15/22 ,  A61L15/425 ,  C08J2201/052 ,  C08J2300/00 ,  Y10S521/905 ,  Y10T428/249978 ,  Y10T428/24998

    摘要： Disclosed is an absorbent foam that exhibits desirable softness and flexibility properties yet is highly absorbent. In one embodiment, the absorbent foam comprises a water-swellable, water-insoluble polymer wherein the absorbent foam exhibits a Free Swell value of at least about 10 grams of liquid per gram of absorbent foam and a Softness value that is less than about 30 grams of force per gram per square meter of absorbent foam. In a second embodiment, the absorbent foam has an average cell size of the cells in the absorbent foam between about 10 microns to about 100 microns and an average wall thickness of the cells in the absorbent foam between about 0.1 micron to about 30 microns. Such an absorbent foam may be used in a disposable absorbent product intended for the absorption of fluids such as body fluids.

    摘要翻译： 公开了一种吸收性泡沫，其表现出所需的柔软性和柔软性，但是具有高吸收性。 在一个实施方案中，吸收性泡沫包括水溶胀性水不溶性聚合物，其中吸收性泡沫体表现出每克吸收性泡沫体至少约10克液体的自由溶胀值和小于约30克的柔软度值 的力每克/平方米的吸收性泡沫。 在第二个实施方案中，吸收性泡沫体具有在约10微米至约100微米之间的吸收性泡沫体中的细胞的平均泡孔尺寸和约0.1微米至约30微米的吸收性泡沫体中的细胞的平均壁厚度。 这种吸收性泡沫可以用于旨在吸收诸如体液的流体的一次性吸收产品中。

    Process for preparing an absorbent foam
    2.
    发明授权
    Process for preparing an absorbent foam 失效
    制备吸收性泡沫的方法

    公开(公告)号：US5948829A

    公开(公告)日：1999-09-07

    申请号：US978263

    申请日：1997-11-25

    申请人： Palani Raj Ramaswami Wallajapet ,  Jian Qin ,  Gary D. Williams

    发明人： Palani Raj Ramaswami Wallajapet ,  Jian Qin ,  Gary D. Williams

    IPC分类号： A61L15/22 ,  A61L15/42 ,  C08J9/28

    CPC分类号： C08J9/28 ,  A61L15/22 ,  A61L15/425 ,  C08J2201/052 ,  C08J2300/00

    摘要： Disclosed is a process for preparing an absorbent foam. The process generally comprises forming a solution of a polymer in a solvent, freezing the solution at a relatively slow cooling rate to a temperature below the freezing point of the solvent, removing the solvent from the frozen solution, and recovering the polymer to form a water-swellable, water-insoluble polymeric foam. The process has been found to enable one to prepare an absorbent foam that exhibits desirable softness and flexibility properties yet is highly absorbent. Such an absorbent foam may be used in a disposable absorbent product intended for the absorption of fluids such as body fluids.

    摘要翻译： 公开了一种制备吸收性泡沫体的方法。 该方法通常包括在溶剂中形成聚合物溶液，以比较缓慢的冷却速度将溶液冷冻至低于溶剂凝固点的温度，从冷冻溶液中除去溶剂，并回收聚合物以形成水 不溶于水的聚合物泡沫。 已经发现该方法使得能够制备显示出所需的柔软性和柔性的吸收性泡沫体，但是它是高吸收性的。 这种吸收性泡沫可以用于旨在吸收诸如体液的流体的一次性吸收产品中。

    Synthetic fiber nonwoven web and method
    5.
    发明授权
    Synthetic fiber nonwoven web and method 失效
    合成纤维非织造纤维网及方法

    公开(公告)号：US06692825B2

    公开(公告)日：2004-02-17

    申请号：US10091801

    申请日：2002-03-06

    申请人： Jian Qin ,  Yong Li ,  Wendy Lynn Van Dyke ,  Anthony John Wisneski ,  Palani Raj Ramaswami Wallajapet ,  Hannong Rhim

    发明人： Jian Qin ,  Yong Li ,  Wendy Lynn Van Dyke ,  Anthony John Wisneski ,  Palani Raj Ramaswami Wallajapet ,  Hannong Rhim

    IPC分类号： B32B300

    CPC分类号： D04H3/16 ,  D01D5/0985 ,  D01D5/14 ,  Y10T428/24612 ,  Y10T428/249921 ,  Y10T428/29 ,  Y10T428/2913 ,  Y10T428/2967 ,  Y10T428/2969 ,  Y10T428/31725 ,  Y10T442/183 ,  Y10T442/184 ,  Y10T442/20 ,  Y10T442/2025 ,  Y10T442/60 ,  Y10T442/607 ,  Y10T442/613 ,  Y10T442/622

    摘要： A nonwoven web and method of preparing a novel nonwoven web of synthetic fiber are disclosed. An aqueous solution amide crosslinked synthetic precursor polymer is extruded under defined conditions through a plurality of die orifices to form a plurality of threadlines. The threadlines are attenuated with a defined primary gaseous source to form fiber under conditions of controlled macro scale turbulence and under conditions sufficient to permit the viscosity of each threadline, as it leaves a die orifice and for a distance of no more than about 8 cm, to increase incrementally with increasing distance from the die, while substantially maintaining uniformity of viscosity in the radial direction, at a rate sufficient to provide fiber having the desired attenuation and mean fiber diameter without significant fiber breakage. The attenuated threadlines are dried with a defined secondary gaseous source. The resulting fibers are deposited randomly on a moving foraminous surface to form a substantially uniform web. The moving foraminous surface is positioned about 10 to about 100 cm from the last gaseous source to contact the threadlines. The fibers have a mean fiber diameter in the range of about 0.1 to 30 &mgr;m and are substantially free of shot. The attenuating and drying steps are carried out under conditions of controlled macro scale turbulence.

    摘要翻译： 公开了一种制备合成纤维的新的非织造纤维网的非织造纤维网和方法。 将水溶液酰胺交联的合成前体聚合物通过多个模孔在规定的条件下挤出以形成多条丝线。 在受控的大规模湍流的条件下和在足以允许每个丝线的粘度的条件下，当纱线离开模口并且距离不超过约8厘米的条件下，丝线用限定的主要气态源减弱以形成纤维， 随着距离模具的距离的增加而逐渐增加，同时基本上保持径向粘度的均匀性，其速率足以提供具有期望的衰减和平均纤维直径的纤维而没有显着的纤维断裂。 衰减的丝线用限定的二次气源干燥。 所得纤维随机地沉积在移动的多孔表面上以形成基本均匀的网。 移动的多孔表面位于离最后气态源约10至约100厘米处以接触线。 纤维的平均纤维直径在约0.1至30μm的范围内，并且基本上没有喷射。 衰减和干燥步骤在受控的大规模湍流条件下进行。

    Absorbent composition
    6.
    发明授权
    Absorbent composition 失效
    吸收剂组合物

    公开(公告)号：US06951895B1

    公开(公告)日：2005-10-04

    申请号：US08759108

    申请日：1996-12-02

    申请人： Jian Qin ,  Palani Raj Ramaswami Wallajapet

    发明人： Jian Qin ,  Palani Raj Ramaswami Wallajapet

    IPC分类号： A61F13/15 ,  A61F13/53 ,  A61L15/60 ,  B01J20/26 ,  C08J3/075 ,  C08L5/08 ,  C08L101/14 ,  C08K3/00

    CPC分类号： C08L101/14 ,  A61L15/60 ,  C08J3/075

    摘要： Disclosed is an absorbent composition comprising each of an acidic and a basic material, wherein the absorbent composition exhibits desirable absorbent properties. Specifically, the present invention relates to an absorbent composition comprising either an acidic water-swellable, water-insoluble polymer having a pKa between about 2 to about 12 or a basic water-swellable, water-insoluble polymer having a pKb between about 2 to about 12 and either a basic or an acidic second material. The absorbent composition has the ability to slowly absorb a large quantity of liquid, particularly while under an external pressure. The absorbent composition is useful in disposable absorbent products, such as those disposable absorbent products that are used to absorb bodily liquids.

    摘要翻译： 公开了一种包含酸性和碱性物质的吸收剂组合物，其中吸收组合物表现出所需的吸收性能。 具体而言，本发明涉及一种吸收组合物，其包含具有约2至约12的pK值的酸性水溶胀性水不溶性聚合物或碱性水溶胀性水不溶性聚合物 具有约2至约12之间的pK b 2和碱性或酸性第二材料。 吸收剂组合物具有缓慢吸收大量液体的能力，特别是在外部压力下。 吸收组合物可用于一次性吸收产品，例如用于吸收身体液体的那些一次性吸收产品。

    Structure having balanced pH profile
    8.
    发明授权
    Structure having balanced pH profile 有权
    具有平衡pH分布的结构

    公开(公告)号：US07317135B2

    公开(公告)日：2008-01-08

    申请号：US11317860

    申请日：2005-12-22

    申请人： Palani Raj Ramaswami Wallajapet ,  Alice Y. Romans-Hess ,  Edwin T. Ta ,  Jian Qin

    发明人： Palani Raj Ramaswami Wallajapet ,  Alice Y. Romans-Hess ,  Edwin T. Ta ,  Jian Qin

    IPC分类号： A61F13/15

    CPC分类号： A61F13/15203 ,  A61L15/18 ,  A61L15/20 ,  A61L15/225 ,  A61L15/60 ,  Y10S524/916

    摘要： Disclosed is an absorbent structure comprising an acidic or basic water-swellable, water-insoluble polymer, a basic or acidic second material, and, optionally, a buffering agent, wherein the absorbent structure exhibits desirable absorbent properties. Specifically, the present invention relates to an absorbent structure having the ability to absorb a large quantity of liquid while maintaining a substantially desired and balanced pH profile on or along the upper surface of the absorbent structure. The absorbent structure is useful in disposable absorbent products, such as those disposable absorbent products that are used to absorb body liquid.

    摘要翻译： 公开了一种吸收结构，其包含酸性或碱性水溶胀性水不溶性聚合物，碱性或酸性第二材料和任选的缓冲剂，其中吸收性结构显示出期望的吸收性能。 具体而言，本发明涉及具有吸收大量液体的能力的吸收结构，同时在吸湿结构的上表面上或沿着吸湿结构的上表面保持基本上期望的和平衡的pH分布。 吸收结构可用于一次性吸收产品，例如用于吸收体液的那些一次性吸收产品。

    Structure having balanced pH profile
    9.
    发明授权
    Structure having balanced pH profile 失效
    具有平衡pH分布的结构

    公开(公告)号：US06639120B1

    公开(公告)日：2003-10-28

    申请号：US09188358

    申请日：1998-11-10

    申请人： Palani Raj Ramaswami Wallajapet ,  Alice Y. Romans-Hess ,  Edwin T. Ta ,  Jian Qin

    发明人： Palani Raj Ramaswami Wallajapet ,  Alice Y. Romans-Hess ,  Edwin T. Ta ,  Jian Qin

    IPC分类号： A61F1315

    CPC分类号： A61L15/225 ,  A61F13/15203 ,  A61L15/18 ,  A61L15/20 ,  A61L15/46 ,  A61L15/60 ,  A61L2300/00

    摘要： Disclosed is an absorbent structure comprising an acidic or basic water-swellable, water-insoluble polymer, a basic or acidic second material, and, optionally, a buffering agent, wherein the absorbent structure exhibits desirable absorbent properties. Specifically, the present invention relates to an absorbent structure having the ability to absorb a large quantity of liquid while maintaining a substantially desired and balanced pH profile on or along the upper surface of the absorbent structure. The absorbent structure is useful in disposable absorbent products, such as those disposable absorbent products that are used to absorb body liquids.

    摘要翻译： 公开了一种吸收结构，其包含酸性或碱性水溶胀性水不溶性聚合物，碱性或酸性第二材料和任选的缓冲剂，其中吸收性结构显示出期望的吸收性能。 具体而言，本发明涉及具有吸收大量液体的能力的吸收结构，同时在吸湿结构的上表面上或沿着吸湿结构的上表面保持基本上期望的和平衡的pH分布。 吸收结构可用于一次性吸收产品，例如用于吸收身体液体的那些一次性吸收产品。