公开(公告)号：US20210154606A1

公开(公告)日：2021-05-27

申请号：US17047697

申请日：2018-05-16

申请人： South China University of Technology ,  Guangzhou Fiber Product Testing and Research Institute

发明人： Yurong Yan ,  Peng Zhang ,  Ruitian Zhu ,  Yaoming Zhao ,  Lingli Deng ,  Fei Zou ,  Suhan Yang ,  Wentao Zhang

IPC分类号： B01D39/16 ,  D04H1/541 ,  D04H1/544 ,  D04H1/545 ,  D04H1/548 ,  D04H1/549 ,  D04H1/55 ,  D04H1/559 ,  D04H1/728

摘要： The present invention discloses a micro gradient filter material of high-efficiency low-resistance micron-nano fibers and a preparation method therefor. The material comprises a nano fine filter layer, a micron support primary filter layer, and a protective surface layer; the micron support primary filter layer and the nano fine filter layer are alternately superimposed, and arranged between the two protective surface layers; the nano fine filter layer has a grid structure composed of a plane matrix fiber layer and cones, wherein the fibers between the point of the cone and the grid matrix fiber layer form a structure oriented from the point to the plane matrix fiber layer. In the present invention, the uncharged filter material of has a filtration efficiency of 99.9% to 99.999% and a pressure drop of 130-300 Pa for the NaCl aerosol with a mass median diameter of 0.26 μm, and the uncharged filter material has a filtration efficiency of 99.9% to 99.999% and a pressure drop of 30-250 Pa for the NaCl aerosol with a mass median diameter of 0.26 μm.

公开(公告)号：US09103056B2

公开(公告)日：2015-08-11

申请号：US13966774

申请日：2013-08-14

申请人： The Procter & Gamble Company

发明人： Linda Evers Smith ,  David William Cabell ,  Larry Neil Mackey ,  Gregory Charles Gordon ,  Paul Dennis Trokhan ,  Tedi-Lea Anne De Bruler

IPC分类号： D04H1/4309 ,  D04H1/545 ,  D04H3/14 ,  D01F6/50 ,  D04H3/005 ,  D01F6/88 ,  D04H1/4326 ,  D04H3/007 ,  D04H3/009 ,  D04H3/03 ,  D01F6/14 ,  D01F9/00 ,  D04H3/16 ,  D04H13/00

CPC分类号： D04H3/005 ,  B32B5/26 ,  B32B2555/00 ,  D01F6/14 ,  D01F6/50 ,  D01F6/88 ,  D01F9/00 ,  D04H1/4309 ,  D04H1/4326 ,  D04H1/545 ,  D04H1/551 ,  D04H3/007 ,  D04H3/009 ,  D04H3/013 ,  D04H3/03 ,  D04H3/14 ,  D04H3/16 ,  D04H13/002 ,  D04H13/007 ,  Y10T428/24479 ,  Y10T428/24942 ,  Y10T428/249921 ,  Y10T428/29 ,  Y10T428/2913 ,  Y10T442/2525

摘要： Polymer structures and methods for making such polymer structures are provided. More particularly, polymer structures comprising a hydroxyl polymer structure, such as a fiber comprising a hydroxyl polymer are provided. Even more particularly, fibrous structures comprising a hydroxyl polymer structure, such as a fiber comprising a hydroxyl polymer, wherein the fibrous structure exhibits a CETM Factor of less than 20 and/or a CETM*L2 Factor of less than 950 are provided.

公开(公告)号：US4639390A

公开(公告)日：1987-01-27

申请号：US794115

申请日：1985-11-01

申请人： Rikuo Shoji

发明人： Rikuo Shoji

IPC分类号： D04H1/4309 ,  D04H1/545 ,  B32B3/00

CPC分类号： D04H1/54 ,  Y10S428/913 ,  Y10T428/24603 ,  Y10T428/24802 ,  Y10T442/69 ,  Y10T442/692

摘要： The present invention is in a web and method for preparation of non-woven fabric which contains polyvinyl alcohol fiber comprising the steps offorming a web containing scarcely soluble polyvinyl alcohol fiber which is soluble or swellable in the presence of water at a temperature of 90.degree. C. or higher in the amount at least 10% by weight,providing water in said web, andpartially thermally bonding the web so that bonded area occupies 5 to 40% of the web area.

摘要翻译： 本发明是一种用于制备包含聚乙烯醇纤维的无纺织物的网和方法，包括以下步骤：在90℃的温度下在水存在下形成可溶或可溶胀的几乎不溶的聚乙烯醇纤维的网 C或更高的量为至少10重量％，在所述幅材中提供水，并部分地热粘合幅材，使得粘合区占网幅面积的5至40％。