Minnesota Mining and Manufacturing Company

3m Innovative Properties Company

Gerald R Porter

Mandel L Desnick

Kenneth L Penttila

Thomas I Bradshaw

Eric N Hockert

A method of spin welding a fastener to an article and such an article. In a preferred mode, a method of spin welding a fastener to a surface conditioning treating article is disclosed. The fastener comprises a generally planar base including a first side, a second side, and a drive member extending from the second side. The surface treating article comprises a working surface adapted to treat a workpiece surface, and a back surface, the back surface comprising an open woven scrim. The first side of the fastener base is melt-bonded by the spin weld method to the open woven scrim of the surface treating article.

Method for attaching a fastener to a surface treating article, and such

An article made by spin welding a fastener to the article. In a preferred mode, a method of spin welding a fastener to a surface conditioning treating article is disclosed. The fastener comprises a generally planar base including a first side, a second side, and a drive member extending from the second side. The surface treating article comprises a working surface adapted to treat a workpiece surface, and a back surface, the back surface comprising an open woven scrim. The first side of the fastener base is melt-bonded by the spin weld method to the open woven scrim of the surface treating article.

Article made by spin welding a fastener thereto

A directional image is created in transparent sheeting comprising a monolayer of microlenses by forming deformations in at least some of the microlenses by irradiation with a laser beam which has a short pulse duration. The directional images may be formed in transparent sheeting which has been applied to a document as an overlay. When viewed under diffuse lighting conditions, the deformations appear as a dark image. The deformations may be formed so that when viewed under retroreflective conditions within a conical field the image is darker than the surrounding background, and when viewed under retroreflective conditions outside the conical field the image is brighter than the surrounding background.

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Prairie du Chien, WI, United States of America

Gerald R Porter