Protective film
AssigneeNeXolve Corporation
InventorsJames D. Moore, Brian G. Patrick, Brandon S. Farmer, Garrett D. Poe, David L. Rodman, Lonnie F. Bradburn, Jr., Amy S. Davis
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Abstract
A protective film has a soluble polyimide polymer base layer and an exterior layer directly contacting the base layer exterior surface. The base layer is less than 12 microns thick, and is at least 2 meters long. The exterior layer includes at least one of a fluorinated polymer, a dielectric layer, one or more metallic layers, a metalloid layer, or a plurality of dielectric layers where each dielectric layer has a dielectric layer thickness that varies no more than 3%. The exterior layer or the base layer can also include additives, as desired.
Claims5
A process for making a protective film comprising:
- a) providing a first carrier film having a length greater than 2 meters;
- b) coating the first carrier film with a dope comprising a soluble polyimide polymer and a solvent, wherein the soluble polyimide polymer is 6FDA-BDAF;
- c) curing the dope to form a base layer by evaporating the solvent such that the base layer has a base layer thickness less than 12 microns, and where the base layer has a length of at least 2 meters, an exterior surface, and an interior surface;
- d) coating the base layer exterior surface with an exterior layer where the exterior layer comprises a dielectric material;
- e) removing the first carrier film;
- f) connecting a second carrier film to the base layer exterior coated surface;
- g) coating the base layer interior surface with an interior layer, where the interior layer comprises a metallic layer, wherein the protective film comprises the base layer with the interior and exterior surfaces coated;
- and
- h) applying the protective film to a substrate such that the interior layer faces the substrate.
Dependencies are inferred from the claim text.