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US 12,447,646 B2Granted
Microstrand interface layer for improved engineered wood products
AssigneeLouisiana-Pacific Corp.
InventorsGareth Paul Merrick, Brian St. Germain
Life of this patent
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Abstract
An engineered wood based siding, cladding or panel with a microstrand interface layer (MIL) applied to the top of the main strand matrix layers to minimize telegraphing, add rigidity and strength, and provide an improved surface appearance. The MIL comprises microstrands applied to the surface of the strand matrix or mat during production, prior to deposition of a fines layer. The MIL prevents the loss of fines into the strand matrix, and helps prevent or eliminate strand telegraphing.
Claims20
A method of producing an engineered wood product, comprising the steps of:
- forming a strand matrix on a production line, said strand matrix comprising a top surface with strands of an average first length and an average first width;
- applying a microstrand interface layer on the top surface of the strand matrix, said microstrand interface layer comprising microstrands with an average second length and an average second width, wherein the average second length is less than the average first length, said microstrand interface layer further comprising an upper surface opposite the strand matrix;
- applying a fines layer on the upper surface of the microstrand interface layer;
- and
- consolidating and bonding the strand matrix, the microstrand interface layer, and the fines layer together.
2 more elements
Dependencies are inferred from the claim text.