1. Floating floors in rail cars
Advantages and benefits of elastic floor bearings
made of high tech PU
International Conference on Rail Coach Interiors
09th to 10th of October 2015, New Delhi

2. Company facts 300 employees worldwide Production based in Austria
Sales offices in Germany, France, USA,
Japan, China, India and Jordan
Production of approx tons of
high-tech PUR material per year
Sales 2014: EUR 70.3 Mio.
Export rate > ø86%
Brands: Sylomer® and Sylodyn®
Core competence:
More than 40 years of experience with vibration isolation and noise reduction within railway superstructure an embedded bearing of buildings.
We get the raw material only from PU supplier and develop in R&D and
Cellular product – mixed with sylomer and closed Sylodyn

3. Business areas products and material solutions Rail Heavy freight
High-speed
Urban transport
Standard-gauge railway
Light rail
Sub ballast mats, sleeper mats, etc since from 40 years, isolation of building , interiors sky scrapers new York , in down town in tokoyo,
Construction
Elastic shielding of buildings
Foundation bedding
Timber construction
Impact noise
Industry
– Machine bearing – Buildings
– Rolling stock – Customer-specific
products and material
solutions

4. From track superstructure into rolling stock vehicles
Getzner Polyurethane elastomers (Sylomer® and Sylodyn®) are used since decades in track superstructure. The excellent material properties like
resistance against environmental impact and aging
excellent creep resistant behaviour
proven long life
made it easy for Getzner to transfer the materials from rough superstructure conditions into the „safer environment“ of rolling stock vehicles.
German railway station in Ulmn – harsh environment experience for 40 years

5. Long term reference Sub-ballast mats for high-speed line
Hannover-Würzburg, DB AG
installed in year 1988
refurbished after 27 years because of change of ballast
approx t load changes since installation
external material test from technical university in Munich
Material properties are still conforming the original specification and data sheet.

6. Floating floor concept
1990 – rail car Austrian company delivered to Baverio , main concept complete decoupling of floor to structure.
Main target:
Decoupling floor construction of car body with elastic polyurethane stripes  floating floor concept

7. Main benefits Floating floor concepts have become very popular.
Depending on the solution and construction the main advantages are:
Reduction of noise level inside waggon
higher comfort
Reduction of floor height
reduction of complete waggon height, less cost and better aerodynamic
Reduction of weight
lower embeded power consumption during usage
in combination with
Reduction of vibration
 this is the part of PU elastic elements from Getzner.

8. Sylomer® stripes mounted in a new metro car
Coaches for DMRC

9. Sylomer® useage in a repair workshop
Sylomer® stripes bonded underneath floor panel

10. Who benefits?
Passengers Railway operators Rail car manufactures

11. Advantages of floating floors with elastic bearings
Material advantage
Benefit
vibration isolation
higher comfort
decreased Life-Cycle-Costs
reduction of secondary
air-borne noise
lower noise level inside rail car
low creeping
long life time
no cracks in seals 
longer service intervals
high efficiency at working load
reduction of floor height  better aerodynamic
lightweight material
lower energy consumption
no loss of material properties when prestressed
tolerance compensation during installation
flame retardant
fire safety norms complied
easy cutting and bonding
easy installation

12. Why using an PU elastic bearing?
Compared to other materials (rubber, silicone) an elastic bearing (like Sylomer® or Sylodyn®) can achieve a significant noise reduction (depending on floor construction).
Elastic material gets softer as it reachs the dynamic load range
Excellent Creep resisitance
Higher damping causes better acoustic performance

13. Noise reduction in rail cars
The noise reduction of a floating floor is depending on
floor underlayment (polyurethane, rubber-metal-compound, silicone)
thickness and width of stripes (e-modulus dependancy)
floor panel (wood, composite, aluminium-honeycomb)
floor covering
Possible noise improvment :
replacing rubber solutions  2 dB(A) to 7 dB(A)
replacing a rigid connection  up to 12 dB(A)
The tests for structure borne noise and vibration
reduction need to be designed for a specific project

14. Can an elastic polyurethane comply fire safety in trains?
The 2012 launched and new developed Sylomer® FR grade (fire retardant) can!
These materials are tested / conform EN for usage in floors.
R10 (formerly R9) – Floor composite (floor substrate and covering)
R22 (formerly R23) – Interior (not listed materials)
The EN is finally replacing all local norms (DIN , BS 6853, NF F ) in March 2016.

15. Flame retardant polyurethane Sylomer® FR
Certifications conform:
Norm:
Classification: EN
HL 3 (Hazard level)
DIN
S4, SR2, ST2
NF F
M3/F2
NFPA 130
ASTM E 662
ASTM E 648
ASTM E 1354
passed
JRMA

16. Support of Getzner Werkstoffe
material selection conform indicated load cases (empty car, traffic load, max. load)
support in optimal strip positioning
calculation of deflection and natural frequency for different load cases
bonding recommendation
internal load testings
chemical resistance testings
partnerships with floor panel, profile manufactures and rail coach manufacturers

17. Areas of Applications - other than Passenger cabins
Steel coil
bearings
Decoupling of
HVAC units
Bearing of
sanitary cabins
Cabin bearing in
measuring vehicles
screw compressors
drivers cabin

18. References Metro Ultra-light-floor tram High speed train
Vienna - Austria
High speed train
China
Metro
Bangkok - Thailand
Commuter trains Germany
Mainline trains UK
DMRC - India
1 – seimens
2 bombardier
3 seimens
4 bombardier
5 hitachi 6

19. Internal and external statements
Getzner can offer statements regarding
ROHS and REACH confirmation
VOC freedom
freedom of halogenated flame retardants
freedom of softening agents
From Deutsche Bahn AG we are listed as Q1 supplier since years.
Rohs -
Reach -

20. Thank you for your attention
The success of our partners
is our passion:
offering the best technology
in the world to deliver cost-effectiveness and reliability.
Thomas Gamsjegar
Amit Baikerikar
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