2.3.8
Backing Sheet (BK) Grade
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NOTE: All panel substrates not mechanically
constrained, should be backed with a laminate
manufacturer's backing sheet to minimize moisture
absorption and provide substrate stabilization.
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Undecorated backing sheet grade laminate is formulated specifically to be
used on the backside of plastic laminated panel substrates to enhance
dimensional stability of the substrate. Backing sheet thickness shall be
0.51 mm 0.020 inches. Backing sheets shall be provided for all laminated
casework components where plastic laminate finish is applied to only one
surface of the component substrate.
2.4
THERMOSET DECORATIVE OVERLAYS (MELAMINE)
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NOTE: Thermoset decorative overlays are also called
low pressure decorative laminate or melamine. This
product is usually pre laminated by thermal fusion
to particleboard, medium density fiber board or
other cellulosic material to form a part of the
manufactured panel. Performance characteristics are
equal to a 0.51 mm (0.020 inch) thick general
purpose grade or liner grade HPDL laminate. Primary
use is as an alternate solution for liner grade
laminate for cabinet interiors. Drawback lies in
limited color availability from most manufacturers
compared to HPDL.
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Thermoset decorative overlays (melamine panels) shall be used for [casework
cabinet interior] [drawer interior] [all semi-exposed] [_____] surfaces.
2.5
EDGE BANDING
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NOTE: PVC edge banding for cabinet door and drawer
front edges is a standard, industry-wide approved
and widely used alternative to using plastic
laminate. Advantages include:
1) A more flexible material for better adhesion to
substrate and minimization of delamination problems
often occurring with laminate edges.
2) Solid color through the banding eliminates the
contrasting dark line at door and drawer edges
typically found when plastic laminate is used to
finish the edges, especially with light and solid
colored laminates.
3) PVC is more durable and less brittle under impact
than laminate. Typical installation detail and
product standard width allows the PVC edging to
overlap the laminate edge on the front and back
surfaces of the doors and drawers to protect and
SECTION 06410A
Page 12
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