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US 10,094,960 B2Granted
Retroreflective sheeting including a low elastic modulus layer
Assignee3M Innovative Properties Company
InventorsReema Chatterjee, Jeffrey A. Peterson, Christopher P. Gerlach, David W. Meitz
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Abstract
The present application generally relates to retroreflective articles and methods of making retroreflective articles. Some embodiments include a body layer having an elastic modulus of equal to or greater than 1750 MPa, a plurality of truncated cube corner elements, and a polymeric layer between the body layer and the cube corner elements, the polymeric layer having an elastic modulus of less than 1750 MPa.
Claims15
A retroreflective article, comprising:
- a body layer comprising at least one of polymethylmethacrylate, PET (polyethylene terephthalate), polycarbonate, acrylic copolymers, and polyurethane, and having an elastic modulus of 1750 MPa or greater;
- a plurality of truncated cube corner elements;
- and
- a polymeric layer between the body layer and the cube corner elements, the polymeric layer having an elastic modulus that is less than 1750 MPa.
1 more element
Dependencies are inferred from the claim text.