Thermal insulating material for housing use and method of using the same

Abstract

The present invention provides a thermal insulating material for housing use. The thermal insulating material includes a fiber structural body or a fiber laminate body, which is obtained by heat treating a mixture of a polyester fiber and a sheath-core type composite fiber. The fibers included in the fiber structural body or the fiber laminate body are mutually fused to one another by means of the molten sheath component of the sheath-core type composite fiber.

1 . A thermal insulating material made of a polyester fiber for housing use, said thermal insulating material comprising a fiber structural body, which is obtained by blending (A) a polyester fiber with (B) a sheath-core type composite fiber, whose sheath component has a lower melting point than that of a core component, to form a non-woven fabric and heat treating the non-woven fabric, characterized in that the fibers included in said fiber structural body are mutually fused to one another by means of the molten sheath component of said sheath-core type composite fiber.  
     
     
         2 . A thermal insulating material made of a polyester fiber for housing use, said thermal insulating material comprising a fiber laminate body, which is obtained by blending (A) a polyester fiber with (B) a sheath-core type composite fiber, whose a sheath component has a lower melting point than that of a core component, to form a laminate of card webs and heat treating the laminate of card webs, characterized in that intersections of three-dimensionally continuous fibers are mutually fused to one another by means of the molten sheath component of said sheath-core type composite fiber.  
     
     
         3 . The thermal insulating material for housing use according to  claim 2 , wherein said fiber laminate body has density of 0.02 to 0.1 g/cm 3  and can be cut in any direction of length, width, and height, the density varying within a range of ±5% in any direction of length, width, and height.  
     
     
         4 . A method of using the thermal insulating-material for housing of any one of  claims 1  to  3 , characterized in that a laminating direction of the fibers is arranged along a direction of thickness of wall.  
     
     
         5 . A method of using the thermal insulating material for housing of any one of  claims 1  to  3 , characterized in that a laminating direction of the fibers is arranged perpendicular to a direction of thickness of wall.