Formaldehyde-free duct liner
OwnerMark Trabbold, Alain Yanginventors
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Abstract
A substantially formaldehyde-free duct liner is manufactured from at least one fiber component that may be mineral or organic fibers blended with at least one non-liquid substantially formaldehyde-free binder. The fiber component may comprise virgin textile glass fibers, virgin rotary glass fibers, organic fibers, or natural fibers. The non-liquid substantially formaldehyde-free binder may be plastic-containing bonding fibers, a powder binder, or a mixture thereof.
Claims89
A substantially formaldehyde-free duct liner comprising:
- a fiber component;
- and
- a non-liquid substantially formaldehyde-free binder bonding at least a portion of said fiber component together, wherein said duct liner has a substantially uniform density throughout its volume.
A substantially formaldehyde-free duct liner comprising:
- a final mat having a first side and a second side, the mat comprising:
- a fiber component;
- a non-liquid substantially formaldehyde-free binder bonding at least a portion of said fiber component together, wherein said duct liner has a substantially uniform density throughout its volume;
- and
- a facing layer bonded to at least one of the two sides.
A method of making substantially formaldehyde-free duct liner, comprising the steps of:
- opening bulk fiber component;
- blending the opened fiber component of said duct liner and a non-liquid substantially formaldehyde-free binder into a fiber blend;
- forming said fiber blend into a mat having a first side and a second side;
- applying a facing layer to at least one of said first and the second sides;
- and
- heating said mat and said facing layer to form a substantially formaldehyde-free duct liner.
Dependencies are inferred from the claim text.