Enhanced heat mirror films
First Claim
1. A process for making a film comprising:
- a) providing a visible light-transmissive birefringent dielectric multilayer support that reflects at least 50% of light in a band at least 100 nm wide in a wavelength region of interest, and b) forming in either order atop the support;
i) a visible light-transmissive metal or metal alloy layer, and ii) a crosslinked polymeric layer, whereby the thickness of the metal or metal alloy layer is such that the film is visible light-transmissive and its reflection band is broadened with respect to that of the support.
1 Assignment
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Accused Products
Abstract
A heat mirror film containing visible light-transmissive and infrared reflective film comprising a birefringent dielectric multilayer support that reflects at least 50% of light in a band at least 100 nm wide in a wavelength region of interest, a metal or metal alloy layer whose thickness is such that the film is visible light-transmissive and its reflection band is broadened, and a crosslinked polymeric layer has improved infrared reflecting properties. The film can be joined or laminated into glazing (especially non-planar vehicular safety glazing) with reduced likelihood that the metal or metal alloy layer will be damaged or distorted.
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Citations
46 Claims
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1. A process for making a film comprising:
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a) providing a visible light-transmissive birefringent dielectric multilayer support that reflects at least 50% of light in a band at least 100 nm wide in a wavelength region of interest, and b) forming in either order atop the support;
i) a visible light-transmissive metal or metal alloy layer, and ii) a crosslinked polymeric layer, whereby the thickness of the metal or metal alloy layer is such that the film is visible light-transmissive and its reflection band is broadened with respect to that of the support. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A process for making a glazing article comprising:
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a) assembling a layer of glazing material and a film comprising a birefringent dielectric multilayer support that reflects at least 50% of light in a band at least 100 nm wide in a wavelength region of interest, a metal or metal alloy layer whose thickness is such that the film is visible light-transmissive and its reflection band is broadened, and a crosslinked polymeric layer, and b) bonding the glazing material and film together into a unitary article. - View Dependent Claims (15)
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16. A process for making a laminate article comprising:
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a) assembling;
i) a first layer of a glazing material, ii) a first mechanical energy-absorbing layer, iii) a visible light-transmissive and infrared-reflective film comprising a birefringent dielectric multilayer support that reflects at least 50% of light in a band at least 100 nm wide in a wavelength region of interest, a metal or metal alloy layer whose thickness is such that the film is visible light-transmissive and its reflection band is broadened, and a crosslinked polymeric layer, iv) a second mechanical energy-absorbing layer and v) a second layer of glazing material, b) removing residual air from between the layers, and c) heating and applying pressure to bond the layers together into a unitary article. - View Dependent Claims (17, 18, 19, 20, 21)
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- 22. A film comprising a birefringent dielectric multilayer support that reflects at least 50% of light in a band at least 100 nm wide in a wavelength region of interest, a metal or metal alloy layer whose thickness is such that the film is visible light-transmissive and its reflection band is broadened with respect to that of the support, and a crosslinked polymeric layer.
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34. A safety glazing pre-laminate comprising at least one layer of a mechanical energy-absorbing material joined to a visible light-transmissive and infrared-reflective film comprising a birefringent dielectric multilayer support that reflects at least 50% of light in a band at least 100 nm wide in a wavelength region of interest, a metal or metal alloy layer whose thickness is such that the film is visible light-transmissive and its reflection band is broadened with respect to that of the support, and a crosslinked polymeric layer.
- 35. A glazing article comprising at least one layer of glazing material joined to a visible light-transmissive and infrared-reflective film comprising a birefringent dielectric multilayer support that reflects at least 50% of light in a band at least 100 nm wide in a wavelength region of interest, a metal or metal alloy layer whose thickness is such that the film is visible light-transmissive and its reflection band is broadened with respect to that of the support, and a crosslinked polymeric layer.
- 45. A vehicle with glazing comprising at least one windshield, backlight, side window or skylight comprising a visible light-transmissive and infrared reflective film comprising a birefringent dielectric multilayer support that reflects at least 50% of light in a band at least 100 nm wide in a wavelength region of interest, a metal or metal alloy layer whose thickness is such that the film is visible light-transmissive and its reflection band is broadened with respect to that of the support, and a crosslinked polymeric layer.
Specification