GLASS WOOL SHAPED ARTICLE AND METHOD OF FORMATION THEREOF

摘要

A glass wool shaped article comprised of a laminate of short glass fibers, wherein the laminate contains no binder and is unified by needle punching conducted in the direction orthogonal to the longitudinal direction of short glass fibers so as to form a glass wool shaped article and wherein the short glass fibers have an average fiber length of 3 to 7 mum and a fiber length of 10 to 200 mm. Preferably, the laminate has a multilayer structure in the direction orthogonal to the longitudinal direction of short glass fibers wherein the short glass fibers constituting the first layer have a different average fiber length. Preferably, the shaped article has a multilayer structure in the direction orthogonal to the longitudinal direction of short glass fibers wherein the short glass fibers constituting the second layer have a different average fiber length, or the density of the second layer is different from that of the first layer.