Polymeric materials providing improved infrared emissivity
AssigneeClopay Plastic Products Company, Inc.
InventorsCarol Blaney, Gregory K. Jones, David G. Bland
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Abstract
Polymeric fibers and films that incorporate IR-emitting materials are disclosed. These fibers and films can be loaded with higher concentrations of IR-emitting materials than was previously thought possible. The IR emissivity of the resulting polymeric materials can be enhanced by increasing the surface area of these fibers and films. Laminates of the fibers or films with other substrate layers are also disclosed.
Claims71
An IR-emitting bicomponent polymeric fiber comprising
- a) a first polymer composition comprising finely-divided particles of an IR-emitting material and a thermoplastic polymer, and
- b) a second polymer composition comprising a thermoplastic polymer,
- wherein the first polymer composition comprises the sheath of a sheath-core bicomponent fiber structure and the second polymer composition comprises the core of said sheath-core bicomponent fiber structure.
An IR-emitting polymeric fiber comprising a first polymer composition comprising finely-divided particles of an IR-emitting material and a thermoplastic polymeric matrix, wherein the fiber surface area is greater than the surface area of a comparable fiber of circular cross-section with a smooth surface.
An IR-emitting multilayer polymeric film comprising
- a) a first polymer composition comprising finely-divided particles of an IR-emitting material and a thermoplastic polymeric matrix, and
- b) a second polymer composition comprising a thermoplastic polymer,
- wherein the first polymer composition comprises the skin layer of the multilayer film and the second polymer composition comprises the core layer of the multilayer film.
A laminated material comprising:
- a) a layer of an IR-emitting polymeric fibrous web of fibers comprising a polymer composition comprising finely-divided particles of an IR-emitting material and a first thermoplastic polymeric matrix, and
- b) a layer of an IR-emitting polymeric film comprising a polymer composition comprising finely-divided particles of an IR-emitting material and a second thermoplastic polymeric matrix.
Dependencies are inferred from the claim text.