| Reliefs - Embossing-Coining,
Roll Forming, Paint-in-Relief
Numerous decorated sheet metal products are
produced with various types of reliefs. These raised or depressed
areas are done by the following methods:
A. Embossing - Coining
PLAIN METALS: The sheet metal will be "hit" with
an embossing die which will create either a depression or a
raised area in the sheet. By repeating the operation or by
using large dies or rollers, even large surfaces can be embossed.
Another example of embossing are coins.
METAL LAMINATES: The metal foil will be bonded to a substrate, like phenolic
resin, which has been produced with a relief. Pressure and bonding process
will telegraph the relief of a substrate through the foil.
B. Roll Forming
Only plain sheet metal can be roll formed. Since this process
requires an automated flow through technology, only coiled
sheet metal can be used. After unwinding from a coil, the metal
will be laminated between two pressure rollers with a design
pattern which is then pressed into the sheet.
A desirable byproduct of this process is the hardening of the metal. It
is therefore possible to specify a thinner material when it has been roll-formed.
Another, non-decorative form of roll forming is used to produce profiles
an moldings from sheet metal. In that case, a coiled sheet or strip of
metal passes through a succession of shaping rollers.
C. Paint-in-Relief
This proprietary formula allows for the production of sheet
metals, plain and laminate, with a customized relief in color.
While EMBOSSING and ROLL FORMING are large production runs only, this
method allows custom jobs from 1 to any number of sheets. |