3m Innovative Properties Company

John M Sever

Gordon P Knutson

William Blake Kolb

Peter T Benson

Gary Lee Huelsman

Nirmal K Jain

Kathleen M Cooklock

Richard G Sitz

A method of handling an adhesive laminate, wherein the adhesive laminate is provided releasably adhered to a first web, comprising a plurality of cut or punched sections and wherein adjacent sections of the adhesive laminate remain joined to one another in the longitudinal direction of the web through one or more tie points. A first supporting structure and a second supporting structure adjacent to the first supporting structure are provided. The first web is led over the first supporting structure. A second web is provided and led over the second supporting structure, wherein the second web is oriented such that the release surface of the second web faces the first supporting structure. A leading portion of a first section of adhesive laminate from the first web is attached to the release surface of the second web and the second web is advanced such that the first section of the adhesive laminate is detached from a second section of adhesive laminate and the leading edge of the second section of adhesive laminate is adhered to the second web in a spaced apart configuration from the trailing edge of the first section of the adhesive laminate. A transdermal drug delivery device prepared by such a method.

Method for handling adhesive laminate sections

Method of selectively removing volatile components from a composition, comprising coating the composition onto a first substrate surface of a substrate, wherein the composition comprises a nonresident volatile component and a resident volatile component. The method further includes positioning at least a portion of the coated substrate between a condensing surface having a condensing surface temperature and a heating surface having a heating surface temperature that is greater than the condensing surface temperature, wherein the condensing surface is in a spaced apart, confronting relationship to the coated surface of the substrate and wherein the heated surface is in thermal contact with a second substrate surface opposite the first substrate surface. In the method, the heated surface temperature and the condensing surface temperature are such that the positioning step causes the nonresident volatile component to be selectively removed from the portion of the coated substrate. The method is suitable for forming transdermal drug delivery compositions.

Drying method for selectively removing volatile components from wet coatings

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Lino Lakes, MN, United States of America

John M Sever