公开(公告)号：US20210388550A1

公开(公告)日：2021-12-16

申请号：US17279984

申请日：2018-09-26

申请人： Kimberly-Clark Worldwide, Inc.

发明人： Jeffrey J. Krueger ,  Mehdi Gholipour Baradari ,  Adrienne M. Williams

IPC分类号： D04H3/007 ,  D01F8/06 ,  D04H3/016 ,  A61F13/62

摘要： A nonwoven loop material comprising a crimped bi-component fiber in a side-by-side arrangement with a first side and a second side, wherein the first side has a heat of fusion from about 99 to about 105 (J/g) and the second side has a heat of fusion from about 73 to about 86 (J/g); and wherein the first side has a first viscosity and the second side has a second viscosity and the first and second viscosities are within +/−5 (g/10 minutes) of each other; and the second side comprises a polyolefin and a low crystallinity additive.

公开(公告)号：US20140170922A1

公开(公告)日：2014-06-19

申请号：US14077637

申请日：2013-11-12

申请人： Kimberly-Clark Worldwide, Inc.

发明人： Simon K. Poruthoor ,  Charles W. Colman ,  Jeffrey J. Krueger ,  Ryan J. McEneany ,  Bryan D. Haynes ,  Wing-Chak Richard Ng

IPC分类号： C08K7/26 ,  B29C44/20 ,  B29C55/30 ,  B29C47/00 ,  A61L15/18 ,  A61L15/24

CPC分类号： B29C44/20 ,  A61L15/18 ,  A61L15/26 ,  A61L15/425 ,  A61L2400/12 ,  B29C44/358 ,  B29C48/05 ,  D01D5/247 ,  D01F1/08 ,  D01F1/10 ,  D01F6/04 ,  Y10T428/298 ,  Y10T442/60 ,  C08L67/04 ,  C08L67/02

摘要： Fibers that are formed from a thermoplastic composition that contains a polymer and high surface area nanostructures are provided. The fibers have a voided structure and low density while maintaining good strength characteristics. To achieve such a structure, a blowing agent in the thermoplastic composition is activated during extrusion to form bubbles in the fibers. The high surface area nanostructures in the formed fibers can be formed of or carry the blowing agent and can enhance the strength of the fibers and compensate for the non-load bearing voids of the fibers.

摘要翻译： 提供由含有聚合物和高表面积纳米结构的热塑性组合物形成的纤维。 纤维具有空隙结构和低密度，同时保持良好的强度特性。 为了实现这样的结构，热塑性组合物中的发泡剂在挤出过程中被激活以在纤维中形成气泡。 成形纤维中的高表面积纳米结构可以由发泡剂形成或携带，并且可以增强纤维的强度并补偿纤维的非承载空隙。

公开(公告)号：US11083816B2

公开(公告)日：2021-08-10

申请号：US15517540

申请日：2014-11-18

申请人： Kimberly-Clark Worldwide, Inc.

发明人： Mark G. Kupelian ,  Lei Huang ,  John H. Conrad ,  Jeffrey J. Krueger ,  Ray A. Sterling

IPC分类号： A61F13/15 ,  A61L15/22 ,  A61F13/511 ,  A61F13/514 ,  D04H1/4291 ,  A61L15/24 ,  A61L15/20 ,  C08L23/12 ,  D01F6/46

摘要： A nonwoven web that contains a plurality of fibers formed from a polyolefin composition is provided. The polyolefin composition contains a rigid propylene polymer that has a relatively high melting temperature and modulus of elasticity, which can provide good strength and durability to the nonwoven web. The polyolefin composition also contains a ductile propylene polymer that has a relatively high melt flow index, which can help achieve relatively fine fibers that minimize the stiffness of the web. In addition to a rigid and ductile polymer, the polyolefin composition also contains a slip additive (e.g., fatty acid derivative). Among other things, such an additive can even further enhance the overall softness of the composition.