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FABRICATION AND ASSEMBLY Rexcel Laminates must be bonded to a substrate of reliable
quality, such as particleboard, medium density fiberboard, or
plywood with one A face. High pressure laminates, plaster,
concrete, and gypsum board should not be considered suitable
substrates. Basic types laminate may not be used as structural
members. Recommended adhesives are permanent types such as urea and
polyvinyl acetate (PVA); and contact types. Lokweld® Adhesives
are recommended for most bonding conditions. Take care to ensure an appropriate moisture balance between
the laminates and the substrate prior to fabrication. The face
and backing laminates and the substrate should be conditioned in
the same environment for 48 hours before fabrication. Recommended conditioning temperature is about 75 degrees
Fahrenheit. Laminates should be conditioned at about 45% relative
humidity. With post forming machinery, a sheet will form at a
nominal temperature of 325 degrees Fahrenheit. Tools Carbide-tipped saw and router blades should be used for
cutting. High tool speed and low feed speed are advisable.
Cutting blades should be kept very sharp and hold-down must
prevent any vibration. Methods Fabrication should follow approved methods. Assembled pieces
should meet the specification of DLPA (Decorative Laminate
Products Association), ANSI A-161.2-1979, and Architectural
Woodwork, Quality Standards, Guide Specifications and Quality
Certification Program guidelines of the Architectural Woodwork
Institute where applicable. To avoid stress cracking, do not use square-cut inside
corners. All inside corners should have a minimum of 1/8"
(3.175mm) radius and all edges should be routed smooth. Drill
Holes for bolts and screws oversized. Screws or bolts should be
slightly countersunk into the face side of a laminate-clad
substrate. |
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