Louisiana-Pacific has filed a patent for a manufactured wood panel or board with an integrated conveying laminate that conveys a fire-resistant additive during the manufacturing process. The laminate not only provides fire resistance but also enhances structural integrity. The patent also includes a method for producing fire-resistant wood composite products. GlobalData’s report on Louisiana-Pacific gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Louisiana-Pacific, structure building framework was a key innovation area identified from patents. Louisiana-Pacific's grant share as of September 2023 was 28%. Grant share is based on the ratio of number of grants to total number of patents.
Manufactured wood panel with fire-resistant conveying laminate
A recently filed patent (Publication Number: US20230311446A1) describes a method for producing fire-resistant (FR) wood composite products. The method involves treating wood strands with chemicals that do not include fire-resistant or fire-retardant chemicals. These treated wood strands are then used to form one or more layers of a strand mat. A first FR-additive conveying laminate is placed on the strand mat, and pressure and heat are applied using a primary press to form a board. The board is then processed to create FR wood composite products.
The patent claims also describe various additional steps and variations of the method. For example, the FR wood composite products can specifically be oriented strand board panels. The FR-additive conveying laminate can either have a pre-applied FR-additive or have the FR-additive applied after being placed on the strand mat. In some cases, a second FR-additive conveying laminate can be applied on top of the first one before applying pressure and heat. The first and second FR-additive conveying laminates can be made of different materials or the same material.
The method also includes the option of placing a bottom FR-additive conveying laminate on a forming line before forming the layers of the strand mat. The FR-additive conveying laminate can be made of various materials, such as fiberglass, non-woven polymer, cellulose material, or mesh. The purpose of the FR-additive conveying laminate is to provide resistance to combustion and flame spread during a fire event, as well as resistance to loss of structural integrity in the wood strand substrate portion of the product.
The patent also mentions the creation of an integrated wood composite panel with an FR-additive conveying laminate, as well as an integrated multi-layer wood composite panel or board. The multi-layer panel includes engineered wood strands that have not been treated with fire-retardant or fire-resistant additives. It also includes a first FR-additive conveying laminate, a fines layer, and an overlay layer. In some cases, a bottommost FR-additive conveying laminate and a second FR-additive conveying laminate can be included in the panel or board.
Overall, this patent describes a method for producing fire-resistant wood composite products using treated wood strands and FR-additive conveying laminates. The method offers various options and variations to achieve different levels of fire resistance and structural integrity during a fire event.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
