Fibrous mats having reduced formaldehyde emissions
AssigneeGeorgia-Pacific Chemicals LLC
InventorsKim Tutin, Ramji Srinivasan, Natasha Wright, Peter Boyer
Life of this patent
Estimating the term…
Abstract
A process for making a fibrous product using a binder based on a formaldehyde-containing resin and especially for making fiberglass insulation, and to the fibrous product itself, wherein a formaldehyde scavenger is separately applied to the fibrous mat, such as by treating the fibers with an aqueous mixture consisting essentially of the formaldehyde scavenger or with a neat form of the scavenger, with the result that the fibrous product exhibits a reduced level of formaldehyde emissions.
Claims32
In a process of producing a fibrous mat wherein fibers are treated with an aqueous binder comprising a formaldehyde-containing resin, and the resin-treated fibers are collected and passed through an oven to cure the resin, the improvement comprising separately applying a formaldehyde-scavenger to the fibrous mat.
A fibrous mat having fibers bonded to one another with a binder comprising a cured formaldehyde-containing resin, wherein the fibrous mat contains a reaction product of formaldehyde and a formaldehyde scavenger separate from the cured binder, the formaldehyde scavenger having been supplied in an amount sufficient to reduce formaldehyde emissions from the fibrous mat.
A method of making a fibrous mat having fibers bonded to one another with a binder comprising a cured formaldehyde-containing resin wherein the fibrous mat exhibits reduced formaldehyde emissions comprising applying a formaldehyde scavenger to the fibrous mat separate from application of the binder.
Dependencies are inferred from the claim text.