公开(公告)号：EP2969419B1

公开(公告)日：2018-05-16

申请号：EP14712893.8

申请日：2014-03-04

Applicant: 3M Innovative Properties Company

Inventor： SLAMA, David F. ,  ANTILA, Garth V. ,  FLANAGAN, Steven J. ,  HANSEN, Brent R.

IPC: B32B3/26 ,  B29C47/00 ,  B26F1/24 ,  B29C47/06 ,  B29K23/00 ,  B32B27/08 ,  B32B27/32 ,  B29C47/88 ,  B26D7/10 ,  B26F1/08 ,  B26F3/06

CPC classification number: B32B3/266 ,  B26D7/10 ,  B26F1/08 ,  B26F1/24 ,  B26F3/06 ,  B29C47/0021 ,  B29C47/003 ,  B29C47/0038 ,  B29C47/004 ,  B29C47/065 ,  B29C47/8805 ,  B29C47/8845 ,  B29C47/886 ,  B29K2023/06 ,  B29K2023/12 ,  B29K2995/0068 ,  B32B27/08 ,  B32B27/32 ,  B32B2307/102 ,  B32B2307/558 ,  B32B2307/726 ,  B32B2439/70 ,  B32B2535/00

Abstract: Polymeric multilayer film having first and second generally opposed major surfaces, an array of openings extending between the first and second major surfaces, and a thickness greater than 125 micrometers, wherein there are at least 30 openings/mm2, and wherein the openings each have a series of areas through the openings from the first and second major surfaces ranging from minimum to maximum areas, and wherein the minimum area is not at at least one of the major surfaces. Embodiments of polymeric multilayer film described herein are useful, for example, for filtration and acoustic absorption.

公开(公告)号：EP3079867A1

公开(公告)日：2016-10-19

申请号：EP14815519.5

申请日：2014-11-25

Applicant: 3M Innovative Properties Company

Inventor： SLAMA, David F. ,  ANTILA, Garth V. ,  HANSEN, Brent R.

IPC: B26F1/31 ,  B29C47/06 ,  B32B38/06 ,  B32B38/04 ,  B32B37/15

CPC classification number: B26F1/26 ,  B26F1/20 ,  B26F1/22 ,  B26F1/384 ,  B26F3/06 ,  B26F3/10 ,  B29C47/0021 ,  B29C47/003 ,  B29C47/004 ,  B29C47/065 ,  B29C47/32 ,  B29C47/8805 ,  B29C47/8845 ,  B29C47/886 ,  B29L2007/008 ,  B29L2009/00 ,  B32B37/153 ,  B32B38/0036 ,  B32B38/06 ,  B32B2038/047

Abstract: Method of making a polymeric multilayer films (115) having an array of openings by coextrusion. Embodiments of polymeric multilayer films made as described herein are useful, for example, filtration and acoustic absorption.

Abstract translation: 通过共挤出制造具有开口阵列的聚合物多层膜（115）的方法。 如本文所述制备的聚合物多层膜的实施例可用于例如过滤和吸声。