Flame retardant ultraviolet cured multi-layered film
AssigneeMinnesota Mining and Manufacturing Company
InventorTodd R. Williams
Life of this patent
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Abstract
A flame resistant composite film includes a first layer and a second layer that are joined together. The first layer has a light transmission of at least 93 percent and is substantially constructed from a radiation-cured polymer and a flame retardant material. The second layer is constructed primarily from thermoplastic polymer resin. The first and second layer when taken as a whole have a flame retardancy sufficient to pass VTM-2 standard of Oct. 27, 1988, of Underwriters' Laboratories, Inc. Also, microstructured films comprising such flame retardant films, backlit displays comprising such microstructured films, and computers comprising such displays.
Claims32
A flame resistant multi-layered film comprising:
- a first layer and a second layer joined together,
- the first layer being substantially composed of a polymerized (meth)acrylic-functional oligomeric composition and a flame retardant chemical and having a light transmission rate of at least 93 percent, and
- the second layer substantially composed of thermoplastic polymer,
- wherein the first and second layers have a combined flame retardancy sufficient to pass VTM-2 standard of Oct. 27, 1988, of Underwriters' Laboratories, Inc.
A flame resistant brightness enhancement film for use in a liquid crystal display comprising:
- a first layer being substantially constructed from a polymerized (meth)acrylic-functional oligomeric composition and a flame retardant material, the first layer having a light transmission rate of at least 93 percent, and
- a second layer substantially composed of thermoplastic polymer resin,
- the first and second layer being joined together and having a combined flame retardancy sufficient to pass VTM-2 standard of Oct. 27, 1988, of Underwriters' Laboratories, Inc.
Dependencies are inferred from the claim text.