公开(公告)号：US09950202B2

公开(公告)日：2018-04-24

申请号：US13757373

申请日：2013-02-01

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： William A. Mittelstadt ,  Carl W. Raines, III ,  David R. Stein ,  Nathan A. Abel ,  David M. Blomberg ,  Michael J. Cowell ,  Gary E. Dwyer ,  Thomas I. Insley ,  Michael J. Svendsen

IPC: A61M16/06 ,  A61M16/20 ,  A62B9/02 ,  A62B18/00 ,  A62B18/10 ,  A62B27/00

CPC classification number: A62B27/00 ,  A61M16/0605 ,  A61M16/20 ,  A62B9/02 ,  A62B18/00 ,  A62B18/10

Abstract: A respiratory mask body defining a breathable air zone for a wearer and having a shut-off valve is provided. In an exemplary embodiment, the mask body includes one or more inlet ports configured to receive one or more breathing air source components. The shut-off valve is operable between a closed position and an open position, and when in a closed position the shut-off valve prevents fluid communication between the one or more inlet ports and the breathable air zone and the shut-off valve returns to an open position in the absence of an applied force.

公开(公告)号：US20150343722A1

公开(公告)日：2015-12-03

申请号：US14820796

申请日：2015-08-07

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Raymond P. Johnston ,  Thomas I. Insley

IPC: B29C71/00 ,  B29C55/06 ,  C08J5/18

CPC classification number: D01D5/423 ,  B29C33/62 ,  B29C43/222 ,  B29C55/00 ,  B29C55/06 ,  B29C59/04 ,  B29C71/0081 ,  B29K2067/00 ,  B29L2031/731 ,  C08J5/18 ,  C08J2323/12 ,  C08J2367/02 ,  G02B5/30 ,  Y10T428/24355 ,  Y10T428/2457 ,  Y10T428/249953 ,  Y10T428/249986 ,  Y10T428/2973 ,  Y10T428/2978

Abstract: Stretched articles, such as oriented polymeric films or fibers, having microstructure features on at least one surface thereof, and processes for making such articles, are disclosed. A method of making fibers comprises forming a polymeric film having a body having a first surface and a second surface and having a longitudinal dimension. The film also comprises a plurality of elongate microstructure features disposed on the first surface of the body in a direction substantially parallel to the longitudinal dimension of the body, wherein the elongate microstructure features are substantially parallel. The method further comprises stretching the polymeric film in a direction substantially parallel to the longitudinal dimension of the body, and fibrillating the stretched polymeric film along the longitudinal dimension of the body to provide one or more fibers, wherein each fiber has at least one microstructure feature thereon.

Abstract translation: 公开了在其至少一个表面上具有微结构特征的拉伸制品，例如定向聚合物膜或纤维，以及制造这种制品的方法。 制造纤维的方法包括形成具有主体的聚合物膜，其具有第一表面和第二表面并具有纵向尺寸。 膜还包括多个细长的微结构特征，其沿着与主体的纵向尺寸基本平行的方向设置在主体的第一表面上，其中细长微结构特征基本上平行。 该方法还包括在基本上平行于主体的纵向尺寸的方向上拉伸聚合物膜，以及沿着主体的纵向尺寸使拉伸的聚合物膜原纤化以提供一种或多种纤维，其中每种纤维具有至少一种微结构特征 上。