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PB69 PolyBak backer is a .020 inch thick sheet measuring 37 x 120 inches that works as a balancing backer on laminated substrates. The 37 x 120 inch size lets you cover larger panel surfaces in a single piece, which helps reduce seams on the back side. The .020 inch thickness matches typical thin backer applications, so it supports panel construction without adding unnecessary bulk. As a PB69 series backer from Richwood Industries, it is designed for use behind decorative laminates, helping provide structure on the reverse face. PB69 is 2.5 times stronger than a leading saturated Kraft paper backer of the same thickness, giving the panel backer layer added strength under normal shop handling. That higher strength supports panels during fabrication and installation where the back side still sees stress.
This PB69 PolyBak backer uses a .020 inch thickness that matches applications where a thin, structural backing layer is preferred behind laminate or veneer. The 37 inch width allows coverage on common panel widths, while the 120 inch length supports longer runs or multiple parts cut from a single sheet. Because the sheet is 2.5 times stronger than a leading saturated Kraft paper backer at the same thickness, it helps the overall panel handle clamping, routing, or transport forces on the back side. PB69s role as a balancing backer means it works with laminated fronts and veneer faces to support a more even construction through the panel core.
PB69 PolyBak backer is most commonly used as a backer for laminated substrates, so it fits projects where a decorative laminate is bonded to one face and the back needs a stable sheet. In this role, the .020 inch thickness pairs with the laminate face to support typical panel build-ups in woodworking shops. The 37 x 120 inch format lets fabricators use the PB69 backer on full-size panels for cabinets, fixtures, or similar workpieces before cutting them down. PB69 is also used as a paintable overlay for substrates and columns, which means the same sheet that balances laminate can also serve as a prepared surface where a painted finish is desired on exposed faces or wrapped elements.
PB69 is 2.5 times stronger than a leading saturated Kraft paper backer of the same thickness, so the back layer resists tearing or damage when panels are lifted, stacked, or processed. That strength helps the laminate or veneer face stay supported because the back of the panel remains intact under everyday shop handling. PB69 provides good wood veneer balance and functions as a balancing backer, so it works on projects where the construction relies on having a backing material opposite the face material. Using PB69 in this way supports more uniform behavior from the panel during service, since the back and front are designed to work together through the substrate.
The PB69 PolyBak backer is .020 inch thick and measures 37 x 120 inches, so it matches panel work that uses thin backers over a broad sheet area.
The PB69 PolyBak backer is most commonly used as a backer for laminated substrates, so it sits on the reverse side of laminate-faced panels to provide a balancing backing layer.
The PB69 backer is 2.5 times stronger than a leading saturated Kraft paper backer of the same thickness, so it helps panels withstand normal shop handling on the back side.
PB69 PolyBak backer is also used as a paintable overlay for substrates and columns, allowing one material to support both backing and paint-ready overlay applications.
PB69 is noted for good wood veneer balance and as a balancing backer, so it supports veneer applications that rely on a stable back layer opposite the face veneer.
PB69BR28 3X10 is the manufacturer part number for this .020 inch thick, 37 x 120 inch PB69 PolyBak backer sheet, helping match this specific size and type.
This PB69 PolyBak backer from Richwood Industries combines a .020 inch thickness, 37 x 120 inch sheet size, and strength 2.5 times that of a leading saturated Kraft paper backer of the same thickness. Those traits support laminated substrates, wood veneer balance, and paintable overlay work on substrates and columns. For projects that need a balancing backer or paintable overlay in one material, this PB69 sheet gives a defined size and performance level to plan around on the bench and at press.
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