Multilayer optical film with antistatic additive
First Claim
1. An article, comprising:
- a multilayer optical film composed of alternating coextruded polymer layers, at least one of the polymer layers being birefringent; and
an antistatic additive incorporated into the multilayer optical film.
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Accused Products
Abstract
Methods and apparatuses are provided for the manufacture of coextruded polymeric multilayer optical films. The multilayer optical films have an ordered arrangement of layers of two or more materials having particular layer thicknesses and a prescribed layer thickness gradient throughout the multilayer optical stack. The methods and apparatuses described allow improved control over individual layer thicknesses, layer thickness gradients, indices of refraction, interlayer adhesion, and surface characteristics of the optical films. The methods and apparatuses described are useful for making interference polarizers, mirrors, and colored films that are optically effective over diverse portions of the ultraviolet, visible, and infrared spectra.
117 Citations
27 Claims
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1. An article, comprising:
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a multilayer optical film composed of alternating coextruded polymer layers, at least one of the polymer layers being birefringent; and
an antistatic additive incorporated into the multilayer optical film. - View Dependent Claims (2, 4, 5, 6)
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3. (canceled)
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7. An article, comprising:
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a multilayer optical film composed of alternating coextruded polymer layers, at least one of the polymer layers being birefringent; and
an antistatic additive coated onto the multilayer optical film. - View Dependent Claims (8, 10, 11, 12)
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9. (canceled)
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13. A method for making an article, comprising:
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(a) making a multilayer optical film having alternating polymeric layers formed by coextrusion; and
(b) incorporating an antistatic additive into the multilayer optical film. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification