3m Innovative Properties Company

James P Burke

Timothy J Hebrink

Vivian Wynne Jones

Moses Mekala David

Alan B Campbell

Haiyan Zhang

Dale L Ehnes

Daniel S Wertz

Todd G Pett

Derek J Dehn

Milind Balwant Sabade

Michelle M Mok

Mary E Johansen

Lon R Johnson

Caleb T Nelson

James A Phipps

Laura R Nereng

Vivan W Jones

Michelle M S Mok

A composite cooling film comprises an ultraviolet-reflective multilayer optical film and a reflective microporous layer secured thereto. The ultraviolet-reflective multilayer optical film is at least 50 percent reflective of ultraviolet radiation over a majority of the wavelength range of at least 340 but less than 400 nanometers. The reflective microporous layer has a continuous phase comprising a nonfluorinated organic polymer and is diffusely reflective of solar radiation over a majority the wavelength range of 400 to 2500 nanometers, inclusive. The composite cooling film has an average absorbance over the wavelength range of 8 to 13 microns of at least 0.85. An article comprising the composite cooling film adhered to a substrate is also disclosed.

Composite cooling film and article including the same

Anti-reflective article includes a layer defining an anti-reflective surface. The anti-reflective surface includes a series of alternating micro-peaks and micro-spaces extending along an axis. The surface also includes a series of nano-peaks extending along an axis. The nano-peaks are disposed at least on the micro-spaces and, optionally, the micro-peaks. The article may be disposed on a photovoltaic module or skylight to reduce reflections and resist the collection of dust and dirt.

Anti-reflective surface structures

A composite cooling film () comprises an antisoiling layer () secured to a first major surface of a reflective microporous layer (). The reflective microporous layer () comprises a first fluoropolymer and is diffusely reflective of electromagnetic radiation over a majority of wavelengths in the range of 400 to 2500 nanometers. The antisoiling layer () has an outwardly facing antisoiling surface () opposite the micro-voided polymer film. An article () comprising the composite cooling film () secured to a substrate () is also disclosed.

A composite cooling film including a reflective nonporous inorganic-particle-filled organic polymeric layer, an ultra-violet-protective layer or layers, and an antisoiling layer.

Composite cooling film comprising a reflective nonporous organic polymeric layer and a UV-protective layer

A composite cooling film including non-fluorinated organic polymeric layer, a metal layer disposed inwardly of the non-fluorinated organic polymeric layer, and an antisoiling, ultraviolet-absorbing hardcoat layer that is disposed outwardly of the non-fluorinated organic polymeric layer.

Composite cooling film comprising an organic polymeric layer, a UV-absorbing layer, and a reflective metal layer

Methods of fly-cutting a workpiece are disclosed, and in methods in which the position of a fly-cutting head or its associated cutting element is known as a function of time. Also disclosed are methods of forming features, such as grooves or groove segments, in a workpiece such as a cylindrical roll. The features may be provided according to one or more disclosed patterns. Articles made using tools machined in the manner described are also provided, such as polymeric film or sheeting that exhibit certain beneficial properties.

Fly-cutting system and method, and related tooling articles

Fly-cutting system and method, and related tooling and articles

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Saint Paul, MN, United States of America

James P Burke