HDF Wood backup board

HDF Wood backup board Purpose: Mainly used for PCB drilling process;the pressed material surfaces are very flat and straight aftercarefully grinding, which can maximize the quantity of burrs and thewear of knives and tools; HY plates of even materials ensurethe excellent crumb-removing abilities and cleanness degree; which canbe used for various kinds of pore diameters (including 0.25 below); No drilling pollution produced from phenolic aldehyde particles or resins, and drilling ends abrasion are reduced; Woodfiber contains no resin and sand, which allows cutting edge of drillsto keep keen for longer time; the drilling crumbs can be dispelled outfrom the drilling crumb slots easier, therefore, it reduces the dangerof fractures of drilling bits; smaller friction can also allow thedrilling bits to keep under an ideal temperature scope.Advantages: 1. Good performance and low price. 2. Excellent flatness and thickness tolerance. 3. Environmental friendly. Thickness: 2.5mm Thickness Tolerance: ±0.15mm Size Tolerance: ±3mm Type£º BW Series-HDF BU Series- MDF Warpage: less than0.6% of diagonal Density: BW Series 850kg/m3 and above BU Series 800kg/m3 and above Hardness: 70±5 Shores D (BW) 60±5 Shores D (BU) Size: 37"*49";41"*49";43"*49"; 36x48 & so on