3m Innovative Properties Company

Minnesota Mining and Manufacturing Company

Other

Thomas P Hanschen

Ronald Wayne Ausen

William J Kopecky

Thomas J Nelson

Aaron K Nienaber

Joseph B Eckel

Steven J Keipert

Eric M Moore

Brant A Moegenburg

Dennis L Krueger

Jonathan H Alexander

William Ward Merrill

Jeffery N Jackson

Joseph T Bartusiak

William C Unruh

Neelakandan Chandrasekaran

Anthony B Ferguson

Fred J Roska

Timothy P Pariseau

Raymond R Rivera

Albert I Everaerts

Michael R Berrigan

Steven S Kantner

Alan J Sipinen

Ronald W Gerdes

Stephen W Bany

Walter R Romanko

Ramasubramani Kuduva Raman Thanumoorthy

Ronald P Leseman

Suresh Iyer

Akira Ito

David F Slama

Mark F Schulz

Paul A Martinson

Daniel E Meyer

Paul D Graham

John F Reed

Martin E Denker

Thomas Herdtle

Mark A Peltier

Gerald Steven Deeb

Brent R Hansen

Erin D Spring

William H Sikorski, Jr

Wei Zhang

Chiu Ping Wong

Vathsala Rajagopal

Vasav Sahni

James E Sax

James J Pedginski

Scott G Norquist

Seungkyu Lee

Karen M Capik

Paul S Wallis

Gregory P Karp

Robert H Menzies

Stanley C Erickson

Philip Miller

Terry L Morris

Shou-Lu G Wang

Michelle L Legatt

Robert J Kinney

Rebecca A Shipman

Timothy Diekmann

Sachin Talwar

Richard J Thompson

Daniel J Zillig

James C Nygard

Thomas L Wood

Megan A Creighton

Raymond R Gosselin

Herbert J Fox

Garth V Antila

Victor P Thalacker

Liyun Ren

Todd L Nelson

John Stuart Bolton

Georg Eichhorn

Julian B Cooley

Mark A Wright

Thomas Herdtie

Taewook Yoo

Sharon N Mitchell

Jan Ockeloen

Ronald R Borst

Jinzhang You

Xiaojun Su

Qinrong Wu

Mary Beth Henke

Kent R Schoenherr

Chetan P Jariwalla

Susan J Newhouse

Gerald S Deeb

Xiao Jun Su

William H Sikorski

Steven J Flanagan

Timothy J Diekmann

Shou-Lu Wang

Provided are acoustic articles having a porous layer () placed in contact with a heterogeneous filler comprising porous carbon and having an average surface area of from 0.1 m/g to 10,000 m/g. The acoustic articles can have a flow resistance of from 10 MKS Rayls to 5000 MKS Rayls. Optionally, the porous layer includes a non-woven fibrous layer or a perforated film having a plurality of apertures with an average narrowest diameter of from 30 micrometers to 5000 micrometers. The heterogeneous filler can enhance low frequency performance without significantly compromising high frequency performance, thickness or weight.

Acoustic article and related methods

Coextruded polymeric article comprising first segments each having first and second opposed major surfaces and a thickness, the first segments comprising first material; second segments comprising second material, wherein adjacent first segments are joined together via a second segment, wherein the second segments extend from the second major surface past the first major surface of each first adjacent segment and has a distal end, the second segments having first and second oppose sides; first protrusions each extending from the first side of a second segment and extending no more than to the first major surface of the respective first segment adjacent to the second segment, the first protrusions comprising third material; and second protrusions each extending from the first side of a second segment, contacting the first protrusion extending from the second segment and extending not more than to the distal end of the second segment, the second protrusions comprising fourth material, wherein at least one of the second and third or second and fourth materials are different, and wherein the first segments, second segments, first protrusions, and second protrusions each extend continuously for at least 5 mm. Uses for coextruded polymeric articles described herein include adhesive articles and household cleaning products (e.g., a mop, a duster, a brush, a cleaning cloth, or a lint roller).

Coextruded polymeric article and method of making the same

Coextended polymeric article comprising a layer comprising first and second opposed major surfaces, wherein a plurality of attached projection pairs comprising first and second projections extend from only the first major surface (i.e., the second major surface is free of any projections), wherein each first projection has at least first and second opposed sides and a height from the first major surface to a distal end, wherein each first projection has at least first and second opposed sides and a height from the first major surface to a distal end. Uses for coextruded polymeric articles described herein include adhesive articles and household cleaning products (e.g., a mop, a duster, a brush, a cleaning cloth, or a lint roller).

The provided articles, assemblies, and methods use a non-woven fibrous web () having one or more layers () that are densified in situ to provide a layer that is densified relative to one or more adjacent layers, collectively within a unitary non-woven construction. The non-woven web () can be made from fibers having a composition and/or structure that resist shrinkage induced by polymer crystallization when subjected to high temperatures. Advantageously, the provided non-woven webs () can be molded to form a three-dimensional shaped article that displays dimensional stability.

Non-woven fibrous web and methods thereof

A coated abrasive disc includes a disc backing having an outer circumference. An abrasive layer is disposed on the disc backing. The abrasive layer comprises triangular abrasive platelets secured to a major surface of the disc backing by at least one binder material. The triangular abrasive platelets are outwardly disposed at regularly-spaced points along a spiral pattern extending outwardly toward the outer circumference. Each triangular abrasive platelet has respective top and bottom surfaces connected to each other, and separated by, three sidewalls. On a respective basis, one sidewall of at least 90 percent of the triangular abrasive platelets is disposed facing and proximate to the disc backing, and at least 70 percent of the triangular abrasive platelets are disposed in a recurring sequential orientation having an oscillating Z-axis rotational orientation of the first respective sidewall relative to the tangents to the spiral pattern at regularly-spaced points. Methods of making and using the coated abrasive disc are also disclosed.

Coated abrasive disc and methods of making and using the same

A coated abrasive disc includes a disc backing and an abrasive layer disposed thereon. The abrasive layer comprises abrasive elements secured to a major surface of the disc backing by at least one binder material. The abrasive elements are disposed at contiguous intersections of horizontal and vertical lines of a rectangular grid pattern. Each abrasive element has two triangular abrasive platelets, each having respective top and bottom surfaces connected to each other, and separated by, three sidewalls. On a respective basis, one sidewall of the triangular abrasive platelets is disposed facing and proximate to the disc backing. A first portion of the abrasive elements is arranged in alternating first rows wherein the triangular abrasive platelets are disposed lengthwise aligned with the vertical lines. A second portion of the abrasive elements is arranged in alternating second rows wherein the triangular abrasive platelets are disposed lengthwise aligned with the horizontal lines. The first and second rows repeatedly alternate along the vertical lines. Methods of making and using the coated abrasive disc are also disclosed.

A multilayer damping material for damping a vibrating surface comprising: at least one constraining layer; at least one dissipating layer; and at least one kinetic spacer layer comprising multiple spacer elements. The kinetic spacer layer is arranged between the constraining layer and the vibrating surface, when used for damping the vibrating surface. Each spacer element has opposite ends. At least one end of each of the multiple spacer elements is embedded in, bonded to, in contact with, or in close proximity to the dissipating layer, such that energy is dissipated within the multilayer damping material, through movement of the at least one end of each of the multiple spacer elements.

Multilayer damping material

A film having first segments and second segments arranged across the film's width direction is disclosed. The first and second segments are separated from each other by polymer interfaces. The first segments include a first polymeric composition and the second segments include a second polymeric composition. At least some of the second segments are layered second segments having first and second layers in the film's thickness direction, and one of the first or second layers includes a third polymeric composition different from the second polymeric composition. An extrusion die useful for making the film and a method for making the film using the extrusion die are also disclosed.

Film with layered segments and apparatus and method for making the same

Three-dimensional polymeric strand netting, wherein a plurality of the polymeric strands are periodically joined together in a regular pattern at bond regions throughout the array, wherein a majority of the polymeric strands are periodically bonded to at least two (three, four, five, six, or more) adjacent polymeric strands, and wherein no polymeric strands are continuously bonded to a polymeric strand. Three-dimensional polymeric strand netting described herein have a variety of uses, including wound care, tapes, filtration, absorbent articles, pest control articles, geotextile applications, water/vapor management in clothing, reinforcement for nonwoven articles, self bulking articles, floor coverings, grip supports, athletic articles, and pattern coated adhesives.

Three-dimensional polymeric strand netting, dies, and methods of making the same

Coated abrasive belt

Coated abrasive disc

A laminate of an at least partially reticulated thermoplastic film joined to an extensible carrier. The reticulated thermoplastic film includes a backing with openings and discrete elements protruding from the first major surface. There are two discrete elements aligned in a first direction abutting opposite ends of any given opening. In a second direction perpendicular to the first direction, there is one discrete element between the given opening and an adjacent opening aligned in the second direction. Each portion of the thermoplastic backing around the given opening is plastically deformed in its lengthwise direction. A method of making a laminate is also disclosed. The method includes stretching a thermoplastic backing having a plurality of discrete elements in the first direction and laminating the backing to an extensible carrier. Subsequently stretching the laminate in a second direction forms a tear in the thermoplastic backing between two adjacent of the discrete elements.

Laminates including a reticulated thermoplastic film and method of making the same

Netting () comprising an array of polymeric strands () periodically joined together at bond regions () throughout the array, and methods and dies for making the same. Nettings described herein have a variety of uses, including wound care and other medical applications, filtration, absorbent articles, pest control articles, and geotextile applications.

Nettings, dies, and methods of making the same

Growing community of inventors

Mendota Heights, MN, United States of America

Thomas P Hanschen