Thermal control nonwoven material
AssigneeCarl Freudenberg KG
InventorsPeter Grynaeus, Duncan Russell, Terry O'Regan, David S. Dietel, Susan Gwynneth Johnson
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Abstract
A nonwoven textile having reversible enhanced thermal control properties, the material comprising: a bat or web bonded by polymeric binder containing thermal control material within the interior of the bat or web, wherein the thermal control material is dispersed throughout the interior of the polymeric binder, and wherein the thermal control material is substantially entirely within the interior of the nonwoven textile.
Claims22
A method for preparing a nonwoven fabric impregnated with thermal control material wherein the nonwoven fabric is suitable for use as a shoe insole, lining or interlining, comprising:
- preparing a loose fibrous bat or web containing fiber intersections and interstices, submerging the web in a bath comprising a dispersed mixture of polymeric binder and microcapsules containing phase-change thermal control material,
- removing the web from the bath, and
- drying the web to create a nonwoven fabric with phase-change thermal control material dispersed therein, wherein the phase-change thermal control material is dispersed in the binder and the binder acts as a bonding agent of the web to itself as well as the bonding agent of the microcapsules of phase-change thermal control material to each other and to the web, and wherein at least a part of the interstices is filled with gas which imparts thermal insulative properties to the web, and wherein the thickness of the nonwoven fabric after drying is in the range of 0.5 mm to 15 mm.
A method for preparing a shoe insole or lining, said insole or lining comprising a nonwoven fabric impregnated with thermal control material, the method comprising:
- preparing a loose fibrous bat or web containing fiber intersections and interstices, submerging the web in a bath comprising a dispersed mixture of polymeric binder and microcapsules containing phase-change thermal control material,
- removing the web from the bath, and
- drying the web to create a nonwoven fabric with phase-change thermal control material dispersed therein, wherein the phase-change thermal control material is dispersed in the binder and the binder acts as a bonding agent of the web to itself as well as the bonding agent of the microcapsules of phase-change thermal control material to each other and to the web, and wherein at least a part of the interstices is filled with gas which imparts thermal insulative properties to the web, and wherein the thickness of the nonwoven fabric after drying is in the range of 0.5 mm to 15 mm.
Dependencies are inferred from the claim text.