Stock material or miscellaneous articles – Article having latent image or transformation – Striated for iridescence
Patent
1992-02-27
1993-08-10
Ryan, Patrick J.
Stock material or miscellaneous articles
Article having latent image or transformation
Striated for iridescence
428130, 428155, 428176, 428167, 428212, 428213, 4284111, G02B 528
Patent
active
052347290
ABSTRACT:
A multilayered reflective polymeric body of alternating layers of polymers wherein at least a portion of the layers are in a folded-over relationship is provided along with a coextrusion apparatus and method of preparing the multilayer polymeric body. The reflective polymeric body includes at least first and second diverse polymeric materials having a sufficient number of alternating layers of the first and second polymeric materials such that a portion of the light incident on the body is reflected. The first and second polymeric materials differ from each other in refractive index by at least about 0.03. The reflective body is thermoformable and may be fabricated into wall panels, dishware, decorative trims, and the like, and may also find use in security applications such as credit cards, credit card emblems, or on currency.
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Schrenk Walter J.
Wheatley John A.
Wisniewski David M.
Lee Cathy K.
Ryan Patrick J.
The Dow Chemical Company
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