Patent ID: 7174747

Claim:
In a method for making an insulation product in the form of a glass mat, comprising the steps of: conveying recycled fiber mat comprised of small pieces through smooth pipes; adding the recycled fiber mat to virgin fiber and a binder; forming a glass mat comprised of, the virgin fiber, the binder and the recycled fiber mat that was conveyed through the smooth pipes; and curing the binder to form the insulation product in the form of the glass mat, wherein the glass mat has a measured density and a corresponding thermal conductivity; the improvement comprising the step of; conveying the recycled fiber mat through corrugated hoses, prior to performing further steps of; adding the recycled fiber mat to the virgin fiber and the binder; forming a glass mat thereof comprised of the virgin fiber, the binder and the recycled fiber mat that was conveyed through the corrugated hoses; and curing the binder; such that, said glass mat thereof; (a) is of lower corresponding thermal conductivity where said glass mat thereof has a measured density that is equal, by comparison, to said measured density of the glass mat comprised of, the virgin fiber, the binder and the recycled fiber mat that was conveyed through the smooth pipes, or (b) is of unchanged corresponding thermal conductivity where said glass mat thereof has a measured density that is exceeded by said measured density of the glass mat comprised of, the virgin fiber, the binder and the recycled fiber mat that was conveyed through the smooth pipes.