Classic screen printing with organic inks curable by UV light or heat treatment. This method allows representation of brilliant colours in almost all shades (depending on the production volume).
DECORATION TECHNOLOGIES & TECHNIQUES
RASTAL is a world leading supplier of premium glass finishing solutions: each day, up to 500,000 decorated articles leave the main factory in Höhr-Grenzhausen, Germany. At RASTAL, truly creative decoration design is combined with an unparallelled variety of classic and innovative technologies.
The goal you wish to attain with your decoration project and the desired production volume are key criteria for the selection of the optimum decoration method. But whatever your needs may be: are you looking for smart “ways” to appeal to frequenters of trendy venues? Do you wish to provide your promotional cup or mug with a pizzazzy effect, or are you flirting with the idea of an interactive concept? RASTAL will tailor your “one of one” solution from a huge variety of available options.
Whether classic or innovative and eco-friendly – RASTAL has YOUR solution.DATA CHECK System and software specifications for printable artwork
DECORATION TECHNOLOGIES : ECO DECORATION
ECO SILK-SCREEN PRINTING
ECO TRANSFER IMAGE
Decals / transfers printed with organic inks are applied to the glass like stickers and are then cured by heat treatment. This technique allows brilliant colours in almost all shades (depending on the production volume) to be represented.
ECO PAD/TAMPON PRINTING
Pad/tampon printing is an indirect intaglio process whereby the ink is pushed through the screen by means of an elastic pad/tampon made of silicone rubber. Thanks to the elastic deformability of the pad/tampon, “even uneven” or otherwise irregular base areas and surfaces of relief glasses can be printed with ink.
Full-surface painting of glass and ceramic with organic inks. This technique creates a translucent look in the near-entire range of pantone colours.
DECORATION : CLASSIC DECORATION
CLASSIC SILK-SCREEN PRINTING
Classic screen printing with inorganic inks. Finest glass particles / crystals blended with ink pigments are applied to the surface of the glass through the screen mesh. During a kiln firing process of several hours at around 600°C, the colours merge with the glass surface or with the glaze of a ceramic object. If true-colour precious metal inks are used in the decoration process, alloys up to 21 carat are employed, which gives the decorated object a high-quality glossy appearance.
CLASSIC TRANSFER IMAGE
Decals / transfers printed with inorganic inks are applied to the glass in a wet transfer process and, after a curing period, they are fired in the kiln at high temperatures. This method is particularly suitable for unusual shapes and/or complicated colour transitions / gradients.
Full-surface application of inorganic inks to glass and ceramic items for a colourful opaque or satin-finished look.
DECORATION TECHNOLOGIES : RASTAL EFFECT DECORATION
TEMPERATURE-SENSITIVE (COLOUR-CHANGING) DECORS
This decoration technique uses thermochromic colour-changing inks (i.e. inks sensitive to temperature changes) that appear plain white at the outset. As soon as their ambient temperature falls below a certain level – for example, when an ice-cold beverage is poured into the glass – they will unfold their true potential in amazing, blazing colours. The colours available are red, blue, orange, green and black. Whenever a hot beverage is filled into the glass, decors become “alive”: parts of the decoration previously concealed beneath a colour layer will become visible and create a special “wow” effect.
Luminescent decors are printed with fluorescent and phosphorescent (afterglow) inks. The glass items can be coated over their entire surface; as an alternative, only selected decor elements can be highlighted with colours. Fluorescent colours display their maximum effect under black light. Afterglow colours absorb normal short-wave light just like the luminous figures of a clock and then re-emit it in the dark.
RELIEF decors allow the application of either coloured or transparent decors in relief up to a thickness of 0.7 mm. The motif thus not only leaves an “outstanding” visual impression, but also provides a haptic experience to the consumer when it is gripped and while it is being held. With this decoration technique, either full-surface raised decors can be implemented, or selected decoration elements can be raised as particular “high”-lights.
Glass with a view: Motifs are applied by direct printing and allow a picture to be seen "inside" the glass through a free space in the decoration. This special effect is created by a multi-layer printing structure applied to the outside of the glass. An intriguing decoration method with a surprising effect.
Colour-it-yourself decors inspire the consumer to participate in the creative process. Freely designed motifs can be coloured or lettered with customary water-soluble coloured pencils. The colouring can be washed off, the basic decoration remains and can be coloured again.
Just test the QR code decoration out for yourself: Scan the QR code with your smartphone – and you are immediately directed to the campaign website of this glass promotion.
QR CODE DECORS
This method consists in applying QR codes to glasses and cups / mugs. An innovative decoration solution offering innumerable options for blending promotional campaigns designed in glass and porcelain with the world of mobile marketing.
Otherweise full-surface frosted glasses, glass cups/mugs, candle lamps etc. are provided with blank spaces for logos, names or brand motifs. The combination of satin-frosted and blank areas lends the items a distinctive, classy but unobtrusive appearance. When a drink is poured into the glass, the high quality of the design becomes even more apparent as the elements applied to the formerly blank surface will create an eye-catching effect.
RHINESTONE (STRASS) DECORS
STRASS is applied to the surface of the item and bonded with a special adhesive.
This glass has been provided with a nucleation point: tiny circular recesses are created in the glass base using the 2D laser process. These surface irregularities promote the bubble formation process (effervescence) in champagne and sparkling wine.
2D: Particles are removed from the surface of the glass by means of an energetically charged and parallel-aligned light ray. This method allows creation of nucleation points and logos.
3D: A process whereby concentrated light rays penetrate to the inside of the glass, creating visible laser points. Motifs with an interesting three-dimensional effect can be created in this way.
Like with the popular scratch cards, a special coating is applied to part of the decoration which can then be easily scratched off. The scratch glass or cup can continue in “post-scratch” use and will thus remain an advertising medium with a long-term promotional effect.
This glass features an AROMA decor with a strawberry fragrance: rubbing the strawberry will release a pleasant strawberry scent. Enjoy!
AROMA decors open up the way to new sensory impressions in glass decoration. This method uses aromatised or scented inks the fragrance of which is released by gently rubbing the decoration. If the glasses are washed by hand, the effect can be repeated a number of times.
DECORATION TECHNOLOGIES : RASTAL EFFECT COATING
Special painting processes allow full-surface or partial-surface frosting (satin-finishing) of glasses. The acid-etched painting process provides the entire glass surface with a finely structured, “ice-cooled” appearance.
TEMPERATURE-SENSITIVE (COLOUR-CHANGING) COATING
The TEMPERATURE-SENSITIVE COATING method consists in spaying ceramic cups or mugs over their entire surface with organic inks. As soon as their ambient temperature exceeds a certain level – for example, when a hot beverage is poured into the glass – they will unfold their true potential in amazing, blazing colours, which creates a particularly appealing effect.
DECORATION TECHNOLOGIES : TRADITION
Coloured pastes or precious metal pastes are applied by hand directly to glasses or ceramic items by means of a brush and then baked by firing.
High-quality, food-safe pewter alloys are shaped to form pewter lids, base rings, hinges or commemorative coins by pressing, stamping, casting or milling and are then applied to glass or ceramic articles by manual casting. Chemical ageing and brushing lend the pewter decoration a historical appearance.
The sandblasting process consists in blasting silica-sand particles onto the glass surface. The surfaces not to be decorated are covered with a stencil.