Eurailmag - #15 - March 2007 - (Page 18)

Coatings TECHNICAL AND DECORATIVE FILM LAMINATES FUNCTION The SNCF’s anti-graffiti service introduced adhesive coatings in 1989. The “decorative” function of these laminates includes architectural, events, promotional and institutional purposes, and meets growing demand for renewing liveries and interior decoration offered by design firms. • The anti-graffiti function is regulated through tests in accordance with French norm NF F 31-112 and STM-C-004, which stipulates a G1 category, i.e., 100% cleanable with a specific product that doesn’t carry a danger label, and which doesn’t leave residual shadow • The decoration function - combines appearance and decoration - is achieved on-demand using silk screen or digital printing on smooth or textured laminates • Fire resistant laminates are classed M1/F1 or M1/F3 • Other functions (mechanical features, ageing ) are stipulated by French norm NF F 19-483 • Institutional and architectural: last 3 years / 10 years • Single Vision laminates applied on glass last 6 months / 1 year COMPOSITION Today, laminates are multi-layer complexes, e.g. Single layer solutions are also being developed. (See p.20) © SNCF PRODUCTION • Laminate suppliers must meet technical and economic specifications, and products are subject to approval • Both transformers in charge of laminating, cutting formats and silk screen or digital printing (color, decoration), and fitters must also meet technical and economic specifications. Products currently used on interiors for cleaning graffiti: • On localized, vulnerable areas (Z 5300, Z2N 5600 / 8800, Z2N 20500), in progress or full (MI2N, renovation of Z6400 combined with decoration), in progress (TRD, B10 C10, TER X2200 Limousin, V2N, Transilien) Lifetime and removeability depends on the type of glue used: • Events: last 6 months / 1 year • Promotions: last 1 year / 3 years Products are used on exteriors for cleaning graffiti from various types of surface. And using its 15 years experience, unless vandals start using a new scratching technique, the service should extend its reach to include all urban materials. Work is currently underway to develop a single layer complex offering double resistance. A new niche – “global livery”, e.g. for Transilien, combining single color painting and final decoration with laminates. The “global livery” approach is currently being used for renovation work on CORAIL–TRD trains, GL locomotives and various regional and tourist liveries. Another important external use is promoting events or products. For example, the launch of EOLE, TRN, TGV Mediterranean and most recently, the Renovation TGV project, or the TGV R / SONY World Cup or Beatles “Yellow Submarine” events. Another use is protecting glass from impacts, breaking and entering (frontal windows) and scratching (embedded graffiti), e.g. Z2N 20900 and Transilien Patrick Martineau, SNCF DECORATIVE FILM LAMINATE adhesive topped with a laminated surface adhesive. And glues used to attach the coatings - vital to ensure the product remains firmly in place – were also improved. Today, products last from a few months for advertising purposes, to over 12 months for adhesive coatings such as those currently used on third generation TGVs. The most obvious use of adhesive coatings is decorative, i.e., for events or promotional purposes (e.g., Découverte products), as well as institutional (TEOZ, TER, passenger locomotives, third generation TGVs). But they are more often selected for their anti-graffiti and antiscratching properties, than their design appeal. Adhesive coatings also play a maintenance role. They can be applied as a temporary measure, where painted areas are damaged, and remain in place until they can be properly restored. Because adhesive coatings are always used as an additional extra to the final coat of paint on rolling stock. The advantage of adhesives is that no special set up is needed to apply them, unlike paint, and this enables greater availability of the rolling stock treated. On one condition – the adhesives must be applied in an open workshop, at a room temperature of 15°C minimum, and remain in place for 24 hours. When the product has done its job, it is simply removed - cold removal for event-type coatings; hot for permanent coatings Patrick Martineau, SNCF © SNCF P atrick MARTINEAU, head of coordination and communication at RIM - the SNCF’s materials engineering department - has a wealth of experience in adhesive coating techniques. A paint specialist, he soon discovered that these adhesives had poor resistance to graffiti as well as limited design appeal. Together with other experts, he studied ways of extending adhesive techniques for use on rolling stock. The adventure began in 1990, together with Joël SOUCHARD, head of rail in France for 3M, the company responsible for designing the first antigraffiti, adhesive coatings for SNCF rail. Over the next 15 years, using progress in techniques and experience gained, the resistance of these coatings was boosted by using a base Issue 15 EURAILmag Business & Technology

Table of Contents for the Digital Edition of Eurailmag - #15 - March 2007

SOMMAIRE
NOTICE BOARD
COATINGS
NEWS
SERVICES
INFRASTRUCTURE
HIGH-SPEED LINES
TUNNELS
PEOPLE
ROLLING STOCK
WEBSITE DIRECTORY

Eurailmag - #15 - March 2007

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