Decoration Technology
|
| Rastal, as leader in
decoration technology, has a huge variety of technical processes at its
disposal. At the same time, the combination and recombination of these
technologies expands the opportunities even further so that Rastal can
implement the ideal solution for its clients. |
|
 |
Silk-screening 1:
Viscous, inorganic (silicate) inks and precious metals are transferred
directly onto the objects either wet with interim drying or
thermoplastically using a silk-screen stencil. They are then fired at
temperatures from 560 to 800 °C so that they become scratch-proof and
light-stable.
Silk-screening 2:
Organic single or dual-component ink systems as well as silver and
gold-bronzes are transferred directly, in a viscous state, through a
silk-screen stencil onto the objects which are then thermally cured at
temperatures up to 200°C.
|
Decal
1:
Color prints made in inorganic inks and precious metals which have been
applied to metallic paper either by silk-screening and/or offset
printing are then applied to the objects using an aqueous stepped-frame
process and then fired at 560 to 800 °C.
Decal 2:
The thermal transfer of colored print decals, which have been created
either though silk-screening or offset printing, onto a paper coated
with a ‘wax’. Heated silicone swabs remove the picture from the paper
and apply it directly to the object, even on geometrically intricate
shapes. |
|
Rims:
 |
Precious metal
rims:
Imitation gold, polished gold, rosé gold and imitation platinum pastes
are applied directly to the glass or the piece of ceramic either
automatically using a roller or manually with a brush. The later firing
process is very important for good adhesion and resistance.
Colored rims:
A huge variety of colors can be applied to rims by hand. With a calm
hand and a certain eye, additional colorful accents can be created.
|
Ice crystal decor:
Either colorless or coarsely painted glass is applied to a previously
imprinted fluxing agent and melts during firing into an inspiring,
tactile layer of relief glazing. In a complex second firing step, this
layer can also be covered with a high-quality layer of precious metal.
|
|
|
Glass cutting:
The glass surface is worked with diamond cutting discs and corundum
cutters. The structuring and ornamentation of the glass surface, also in
various cutting depths, creates permanent decorations in hand made
quality much appreciated by collectors.
|
 |
Engraving:
Pastes resistant to hydrofluoric acid roughen the surface of the glass
so that silky-satin, cut-like decorations are created. By covering parts
of the glass with insulation lacquer systems, relief-like cuttings can
be engraved into the surface of the glass.
|
Lasers:
Surface decoration: A high-energy
beam of ‘bundled’ light blasts or melts particles out of the glass
surface so that matte areas in either lettering or pictures are created.
|
|
Inside decoration:
In this case, the laser beam penetrates into the interior of the glass
blocks and allows the creation of illustrations which then appear almost
three-dimensional.
Novography:
Fine grains of corundum sand are fired at high pressure onto the
partially covered surface of the glass. These sharp grains blast
particles of glass from the surface when they hit it and create decors
of fascinating depth. |
Luster:
Compounds made up of precious metals are applied in very thin layers to
glass or ceramic either by dipping, spraying, brushing or
silk-screening. The reflections and interferences form decor layers that
shimmer in all the colors of the rainbow. They can also be further
structured by adding marbling, crackling or run-off solutions. The
products must be tempered at 560 to 800 °C.
|
 |
Coating:
Inorganic colors and precious metal pastes are applied by dipping,
spraying or brushing either to the entire glass or ceramic object or to
a part thereof and then fired. For ‘non-flammable’ items, this is also
feasible with organic colors (see Silk-screening 2).
|
Pewter casting:
Pewter badges, base rings, hinges and lids are manufactured from pewter
ingots or billets made out of the finest quality, food-suitable pewter
alloys by extruding, stamping, casting and milling them. They are
subsequently applied to the glass or ceramic object by manual casting.
Chemical aging, polishing and brushing give the pewter decoration an
historical, handmade character. |
|
Holography:
Virtual, three-dimensional pictures are produced on a hot press using a
complex, laser-aided photo-technical process and then applied to the
glass or ceramic object. |
 |
Luminous coloring:
These are organic colors which are either pressed or sprayed directly
onto the glass. Fluorescent colors (particularly luminous under black
light) are just as feasible as luminescent colors (post-luminescent
under black light).
|
Scratch
decoration:
Rastal has achieved yet another breakthrough and, applying the latest
decoration technology, has developed the first scratch glass. The
popular scratch fields are now at last available for promotions
exploiting the effectiveness of the glass as advertising medium. The
scratch glass remains, of course, fully usable after the special
one-time use, all of the basic decoration remains. |
 |
 |
"Do-it-yourself
decoration":
A successful innovation that communicates directly with the youngest
target group. Decorated cups and glasses with spaces children can fill
with their own pictures. The colored-pencil drawings are easily washed
off, but the basic decoration is permanent.
|
|
[ Glass Decoration Techniques ] [ Catalog Request ]
[ Home ] [ Rastal Glassware Decoration, Design and Manufacturing ] [ Apparel Screen Printing and Embroidery ]
|