Inventors:
Brian E. Spiewak - Inver Grove Heights MN
David W. Hegdahl - Lino Lakes MN
Assignee:
3M Innovative Properties Company - St. Paul MN
International Classification:
B32B 328
US Classification:
428167, 428 421, 428172, 428188, 428343, 156292, 150166
Abstract:
The present invention relates to a film comprising a backing and an adhesive. The backing comprises a base layer comprising a first major surface and a second major surface, and at least two rails, each rail comprising a tip surface. The rails extend from the second major surface of the base layer and define micro-channels therebetween. The micro-channels comprise a channel surface. The film comprises an adhesive on the tip surface of the rails. At least a portion of the channel surface is substantially free of adhesive. The present invention also relates to a method of protecting an automobile comprising preparing an automobile surface for application of a protective tape and applying a protective tape to the automobile surface. The present invention is additionally related to a method of manufacturing a protective film.