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

摘要

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.