3m Innovative Properties Company

Daniel J Zillig

Sachin Talwar

Eric M Moore

Liyun Ren

Michael R Berrigan

William J Kopecky

Pingfan Peter Wu

Michael D Swan

Eumi Pyun

Pamela A Percha

Myles Lee Brostrom

Liming Song

Michael D Romano

Jeffrey A Chambers

Randy L Christiansen

Andrew John Ouderkirk

Shandon Dee Hart

Catherine A Leatherdale

Robert L Brott

Patrick R Fleming

Thomas P Hanschen

Akira Ito

Michael D Crandall

James G Carlson

Ronald W Gerdes

Thomas Herdtle

Yong K Wu

Tien T Wu

Margaret M Vogel-Martin

Ignatius A Kadoma

Thomas E Haskett

Gary L Olson

Huiwen Tai

Jonathan H Alexander

William P Klinzing

Gregory L Bluem

Timothy J Rowell

Joan M Frankel

Paul A Nielsen

Nurkan Turkdogru Gurun

Jinzhang You

Xiaojun Su

Qinrong Wu

Xiao Jun Su

Myles L Brostrom

Provided are non-woven fibrous webs, methods and assemblies thereof. The non-woven fibrous web comprises a plurality of melt-blown fibers. The plurality of melt-blown fibers include a thermoplastic polymer blended with a phosphinate and/or polymeric phosphonate. The provided non-woven articles can afford a fine fiber diameter for enhanced acoustic insulation properties, dimensional stability, and superior flame-retardant properties when compared with conventional non-woven articles having similar fiber diameters.

Flame-retardant non-woven fibrous webs

An assembly includes an enclosure including first and second regions spaced apart along a first direction, and a plurality of spaced apart acoustic baffles arranged along a second direction different from the first direction and disposed in the enclosure between the first and second regions. The plurality of spaced apart acoustic baffles includes adjacent first and second acoustic baffles. Each of the first and second acoustic baffles include an acoustically absorptive layer disposed on a sheet having a specific airflow resistance greater than 200 MKS Rayl. The first and second acoustic baffles define a channel therebetween. At least a portion of the channel extends along a longitudinal direction making an oblique angle with the first direction.

Assembly including acoustic baffles

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 process and apparatus for producing a dimensionally stable melt blown nonwoven fibrous web. The process includes forming a multiplicity of melt blown fibers by passing a molten stream including molecules of at least one thermoplastic semi-crystalline (co)polymer through at least one orifice of a melt-blowing die, subjecting at least a portion of the melt blown fibers to a controlled in-flight heat treatment operation at a temperature below a melting temperature of the at least one thermoplastic semi-crystalline (co)polymer immediately upon exiting from the at least one orifice, and collecting at least some of the melt blown fibers subjected to the controlled in-flight heat treatment operation on a collector to form a non-woven fibrous structure. The nonwoven fibrous structure exhibits a Shrinkage less than a Shrinkage measured on an identically-prepared structure including only fibers not subjected to the controlled in-flight heat treatment operation, and generally less than 15%.

Dimensionally-stable melt blown nonwoven fibrous structures, and methods and apparatus for making same

Process of making dimensionally-stable melt blown nonwoven fibrous structures

A nozzle, die, apparatus, system and method for forming a fiber population having a median diameter less than one micrometer, and nonwoven fibrous webs including a population of such sub-micrometer fibers. The nozzle includes a first conduit having a first terminal end, a second conduit positioned coaxially around the first conduit and having a second terminal end proximate the first terminal end, wherein the first and second conduit form an annular channel between the first and second conduit, and additionally wherein the first terminal end extends axially outwardly beyond the second terminal end. The die includes at least one such nozzle, and the apparatus and system include at least one such die. Methods of making nonwoven fibrous webs including a population of sub-micrometer fibers, and articles including such nonwoven fibrous webs, are also disclosed.

Apparatus, system, and method for forming nanofibers and nanofiber webs

A polarizing film is made of multilayer polarizing fibers embedded within a matrix. The fibers are formed with layers of at least a first and a second polymer material. Layers of the first polymer material are disposed between layers of the second polymer material. At least one of the first and second polymer materials is birefringent. In some embodiments the thickness of the layers of at least one of the materials varies across the fiber, and may include layers are selected as quarter-wavelength thickness for light having a wavelength of more than 700 nm.

Multilayer polarizing fibers and polarizers using same

A cleaning wipe including a fiber web and a tacky material. The fiber web defines opposing surfaces and an intermediate region between the opposing surfaces. In this regard, at least one of the opposing surfaces serves as a working surface for the cleaning wipe. The tacky material is applied to the web such that a level of tacky material is greater in the intermediate region than at the working surface. In one embodiment, the amount of tacky material per area of web material is greater in the intermediate region than at either of the opposing surfaces. In another embodiment, the fiber web is a nonwoven fiber web.

Cleaning wipe and method of manufacture

Growing community of inventors

Cottage Grove, MN, United States of America

Daniel J Zillig