Processing and working instructions HPL and HPL elements PR ...

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PRODUCT INFORMATION Surface planer Feed speed: 5 – 15 m/min Cutting speed: 12 – 15 m/s Speed of rotation: 3,000 rpm For large production runs, carbide-tipped blades should be used, since normal jointer blades have only a short tool life. Double-end profilers This process is characterised by economic processing, particularly for large production runs. The equipment from the spindle moulder (see above) is also advisable in this case. 3.3 Edge finishing of Duropal window boards Edge sanding is recommended in order to avoid stress cracking under temperature and/or humidity stress. 3.4 Profiling of the edges of elements The profiling of element edges, e.g. for the post-forming or soft forming process, requires tools such as the hand router, spindle moulder or the double-end profiler. 4. DrILLINg OF DUrOPAL HPL AND DUrOPAL HPL ELEMENTS 4.1 general Please note: Drill holes in DUROPAL HPL should always be 0.5 mm larger than the screw diameter. The screws need this slight clearance all round to prevent cracks forming in the area around the drill hole in the event of temperature and humidity fluctuations. Raised countersunk head screws require rosette washers. For our DUROPAL window boards, use only plastic washers. 099 PI Processing and working instructions Page 8 of 34
PRODUCT INFORMATION 4.2 Drilling tools Twist bits Twist bits specially designed for plastics have a large pitch (steep twist) with wide cutting grooves). Tip angles of 60°- 80° are ideal for drilling DUROPAL HPL. Combi-bits Combi-bits or carbide disc drills are suitable for larger diameter drill holes. Step bits Step bits are ideal for drill holes of any type; this technique avoids double drilling. Hole cutters Hole cutters with guide pins should be used for larger drill hole diameters. If using adjustable hole cutters with guide pins, the hole must be drilled from both sides. 4.3 Drilling technique When adjusting the drilling rate, ensure that the melamine surface of the DUROPAL HPL is not damaged. The cutting speed for HSS drills is approx. 0.8 m/s, and for carbide-tipped drills up to 1.6 m/s. The advisable feed rate is 0.02-0.05 mm/rev, corresponding to 1,000 revolutions for 20-50 mm drilling depth/min. The possible accumulation of material at the exit of the drill bit can be avoided by using a hardwood or laminate underlay. For large production runs, even better results can be achieved using drilling jigs, which are equipped with drilling bushes on both sides to enable firm clamping. For countersinking, the guideline speeds should be halved. 099 PI Processing and working instructions Page 9 of 34
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Page 13 and 14: PRODUCT INFORMATION 6.3 Cutting spe
Page 15 and 16: PRODUCT INFORMATION MDF panels Part
Page 17 and 18: PRODUCT INFORMATION 7.6 Bonding Ple
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Page 21 and 22: PRODUCT INFORMATION Pressing temper
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Page 27 and 28: PRODUCT INFORMATION 8.3.3 Internal
Page 29 and 30: PRODUCT INFORMATION 8.3.9 Joints
Page 31 and 32: PRODUCT INFORMATION Limescale remai
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Processing and working instructions HPL and HPL elements PR ...

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