Patent ID: 8449947
Filing Date: 2013-05-28
Classification: A43B,D04H,D06M,D21H,Y10T

Abstract:
1. 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.