Cellulosic fibers having enhanced reversible thermal properties and methods of forming thereof
First Claim
1. A cellulosic fiber having enhanced reversible thermal properties, comprising:
- a fiber body formed of an elongated member, the elongated member including a blend of a cellulosic material and a non-encapsulated phase change material, the non-encapsulated phase change material forming a plurality of domains dispersed within the cellulosic material, the non-encapsulated phase change material having a transition temperature in the range of 15°
C. to 45°
C., the non-encapsulated phase change material providing thermal regulation based on at least one of melting and crystallization of the non-encapsulated phase change material at the transition temperature.
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Reexamination
Accused Products
Abstract
Cellulosic fibers having enhanced reversible thermal properties and methods of forming such cellulosic fibers are described. In one embodiment, a cellulosic fiber includes a fiber body formed of an elongated member. The elongated member includes a cellulosic material and a temperature regulating material dispersed within the cellulosic material. The temperature regulating material includes a phase change material having a transition temperature in the range of −5° C. to 125° C. The cellulosic fiber can be formed via a solution spinning process and can be used in various products where thermal regulating properties are desired. For example, the cellulosic fiber can be used in textiles, apparel, footwear, medical products, containers and packagings, buildings, appliances, and other products.
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Citations
51 Claims
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1. A cellulosic fiber having enhanced reversible thermal properties, comprising:
a fiber body formed of an elongated member, the elongated member including a blend of a cellulosic material and a non-encapsulated phase change material, the non-encapsulated phase change material forming a plurality of domains dispersed within the cellulosic material, the non-encapsulated phase change material having a transition temperature in the range of 15°
C. to 45°
C., the non-encapsulated phase change material providing thermal regulation based on at least one of melting and crystallization of the non-encapsulated phase change material at the transition temperature.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A cellulosic fiber having enhanced reversible thermal properties, comprising:
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a first elongated member, the first elongated member including a first cellulosic material and a temperature regulating material dispersed within the first cellulosic material, the temperature regulating material including a phase change material having a transition temperature in the range of 0°
C. to 50°
C.; anda second elongated member coupled to the first elongated member, the second elongated member including a second cellulosic material. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A cellulosic fiber having enhanced reversible thermal properties, comprising:
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a core member, the core member including a core polymeric material and a phase change material dispersed within the core polymeric material, the phase change material having a transition temperature in the range of 15°
C. to 45°
C.; anda sheath member surrounding the core member and forming an exterior of the cellulosic fiber, the sheath member including a sheath cellulosic material. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A cellulosic fiber having enhanced reversible thermal properties, comprising:
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a plurality of island members, at least one island member of the plurality of island members including a phase change material having a transition temperature in the range of 15°
C. to 45°
C.; anda sea member surrounding each of the plurality of island members and forming an exterior of the cellulosic fiber, the sea member including a sea cellulosic material. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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Specification