Production of oriented strand board
OwnerAlain Laplante, Mathieu Thibault +1inventors
InventorsAlain Laplante, Mathieu Thibault, Aleksander Nadezhdin
Life of this patent
Estimating the term…
Abstract
A method of making a wood particle board containing sticking type resin coated wood particles wherein the top of a layup of the coated wood particles is smoothed to provide a smooth a top surface on the layup and a release agent is applied on the top surface and the so coated layup is consolidated into a board in a consolidating press under heat and pressure with the coated top surface in direct contact with a press platen.
Claims15
A method for making wood particle boards, the method comprising:
- forming a layup of resin coated strands, wherein a resin of the resin coated strands is an isocyanate resin, and wherein the layup comprises a top surface;
- smoothing, by a steam press, the top surface of the layup, wherein smoothing comprises pre-pressing and steaming the top surface of the layup at the same time thereby forming a pre-pressed layup;
- applying a release agent to the smoothed top surface thereby forming a release agent coated top surface;
- cutting the pre-pressed layup into panels;
- consolidating, by a consolidating press, the panels by contacting a coated top surface of each panel with a metal press platen of the consolidating press thereby forming the wood particle boards;
- and
- removing the wood particle boards from the consolidating press,
- wherein steaming comprises applying a steam dosage per unit area of between 21 g/square meter and 140 g/square meter.
A method for making wood particle boards, the method comprising:
- forming a layup of resin coated strands, wherein a resin of the resin coated strands is an adhesive resin capable of adhering to a metal surface of a press platen of a consolidating press, and wherein the layup comprises a top surface;
- smoothing, by a steam press, the top surface of the layup, wherein smoothing comprises pre-pressing and steaming the top surface of the layup at the same time thereby forming a pre-pressed layup;
- applying a release agent to the smoothed top surface thereby forming a release agent coated top surface;
- cutting the pre-pressed layup into panels;
- consolidating, by the consolidating press, the panels by contacting a coated top surface of each panel with the press platen of the consolidating press thereby forming the wood particle boards;
- and
- removing the wood particle boards from the consolidating press,
- wherein steaming comprises applying a steam dosage per unit area of between 80 g/square meter and 120 g/square meter, and
- wherein the top surface of the layup is steamed in order to reduce stickiness of the top surfaces of the panels to press platens.
A method for making wood particle boards, the method comprising:
- forming a layup of resin coated strands, wherein a resin of the resin coated strands is an isocyanate resin, and wherein the layup comprises a top surface;
- smoothing, by a steam press, the top surface of the layup, wherein smoothing comprises pre-pressing and steaming the top surface of the layup thereby forming a pre-pressed layup;
- applying a release agent to the smoothed top surface thereby forming a release agent coated top surface;
- after applying the release agent and before consolidating, delaying the pre-pressed layup at a loader;
- cutting the pre-pressed layup into panels;
- consolidating, by a consolidating press, the panels by contacting a coated top surface of each panel with a metal press platen of the consolidating press thereby forming the wood particle boards;
- and
- removing the wood particle boards from the consolidating press,
- wherein delaying the pre-pressed layup at the loader comprises delaying the panels so that they spend an average of 3 minutes at the loader.
Dependencies are inferred from the claim text.