Patent ID: 7861488
Filing Date: 2011-01-04
Classification: E04B,E04F,Y10T

Abstract:
1. A sound insulation layer for a corrugated decking flooring system, comprising: a backing layer; and a voluminous core attached to the backing layer, the voluminous core including alternating flute resting portions and trough resting portions, the flute resting portion adapted to rest on a flute of a corrugated deck and the trough resting portion adapted to rest in a trough of the corrugated deck, the flute resting portion having a thickness such that the backing layer rests at a position above a high point of the flute when the sound insulation layer is positioned on the corrugated deck, wherein the flute resting portion includes a plurality of relatively small recesses formed of fused entangled filaments and the trough resting portion includes a plurality of relatively large recesses formed of fused entangled filaments, the relatively small recesses and relatively large recesses each having plateau bottoms residing in a same plane.