公开(公告)号：US20190030855A1

公开(公告)日：2019-01-31

申请号：US15661108

申请日：2017-07-27

Applicant: Hollingsworth & Vose Company

Inventor： Nagendra Anantharamaiah ,  Mark A. Gallimore

IPC: B32B5/26 ,  B32B5/02 ,  B32B7/12 ,  B32B37/18 ,  B32B38/00 ,  B32B37/14 ,  B32B37/12 ,  B32B7/02 ,  A61B46/00 ,  A41D13/12 ,  A41D31/00 ,  A41H43/04 ,  D04H1/56

Abstract: Protective clothing materials and related methods and garments are provided. In some embodiments, a protective clothing material may comprise a fibrous layer that serves as a barrier to certain fluids (e.g., bodily fluids, water) and microbes. The impermeability of the fibrous layer may be due, at least in part, to the structural uniformity and/or relatively small pore size of the fibrous layer. In some embodiments, the fibrous layer may have a relatively high air permeability that imparts beneficial properties (e.g., relatively high air flow, breathability) to the protective clothing material without adversely affecting its protection rating. In certain embodiments, the protective clothing material may also comprise one or more coarse nonwoven webs that impart beneficial properties (e.g., splash resistance) to the protective clothing material. The protective clothing materials, described herein, may be particularly useful for a wide variety of applications, including the formation of AAMI level 4 protective garments.

公开(公告)号：US20180001247A1

公开(公告)日：2018-01-04

申请号：US15217718

申请日：2016-07-22

Applicant: Hollingsworth & Vose Company

Inventor： Sudheer Jinka ,  David T. Healey ,  Mark A. Gallimore

IPC: B01D46/00 ,  B01D39/16

CPC classification number: B01D39/1623 ,  B01D2239/0435 ,  B01D2239/0659 ,  B01D2239/1258 ,  B01D2275/10

Abstract: Filter media for filtering gas streams (e.g., air) are described herein. In some embodiments, the filter media may be designed to have desirable properties such as stable filtration efficiency, high oil repellency, low instantaneous resistance, and/or stable service life. In certain embodiments, one or more layers of the media may have a certain value of basis weight over air permeability (and/or a ratio of a value of basis weight over air permeability between two layers). The filter media may optionally comprise a support layer with a relatively high air permeability (e.g., greater than or equal to 1100 CFM). In some cases, the filter media may have a relatively low initial resistance and/or may have a particular final E1 efficiency. The filter media described herein may be particularly well-suited for applications that involve filtering gas streams (e.g., face masks, cabin air filtration, vacuum filtration, respirator equipment, as well as residential heating ventilation and air conditioning (HVAC) and industrial HVAC systems), though the media may also be used in other applications.