Sylocraft®
Vibration Isolation – Perfectly Shaped

Reduced noise and vibrationtransmission

Time and costs savings due tocustom-engineered design process

Increased comfort for end users

Shaping Technology

Getzner Sylocraft® offers the advanced vibration isolation performance to minimize primary andsecondary noise in custom product design of small and complex geometries. It is composed in threestandard foam grades with varying load bearing capacity obtained
through innovative injection-moulding technology.

Depending on the foaming grade,
Sylocraft® shows different stiffness properties for different needs
and load ranges. It is used in all applications where an advanced vibration
isolation in small parts with complex
geometry is necessary. In addition, thecustomer specific environment andthe desired long-term performanceare part of the specification.

Mass applied for 5 % compression
Pad(100 × 100 × 20 mm)

Grommet(H = 25 mm, ø = 25 mm)

Sylocraft® SCA 5001

330 kg

10 kg

Sylocraft® SCA 7001

610 kg

15 kg

Sylocraft® SCA 8501

1160 kg

25 kg

Product Portfolio

SCA 5001
SCA 7001
SCA 8501

2

Chemical resistance
Sylocraft® has a very good resistanceto acids and bases, aqueous solvents,fatty acids, glycols, aliphatic and organic cleaning solvents. As it is notchemical foamed there is no outgassing. No softeners are needed during
the production process. Sylocraft® isresistant to ozone and UV. Due to its
resilience, it is maintenance free andhas a clearly extended lifetime compared to other elastomers types. Sylocraft® is 100 % recyclable.

Chemical resistance

Test conditions

10 % sulphuric acid (H2SO4)

168 h / 23 °C

10 % caustic soda (NaOH)

168 h / 23 °C

50 % zinc chloride (ZnCl2)

168 h / 23 °C

Boiling water

168 h / 100 °C

Household Detergeant (30 g/l)

168 h / 95 °C

Potassium hydroxide (KOH)

168 h / 70 °C

ASTM N°1 oil

72 h / 100 °C

Isooctane (C8H18)

168 h / 23 °C

Paraffin (CnH2n+2)

168 h / 23 °C

Acetone (C3H6O)

168 h / 23 °C

Ethylene-glycol (C2H6O2)

168 h / 23 °C

Specific chemical resistance upon request.

Sylocraft® is a TPE (thermoplasticelastomer) with lots of advantages
regarding the use in applications,which are close to humans:— Smooth, silky surface haptics— Countless possibilities in colours— Odourless— Nor organoleptic impact (foodcontact quality available)— Suppresses vibration and noise

Vibration isolation – individually created for you

Customer request

321

Technical feasibility –geometry, prizing,delivery times *4

Initial Samples production –samples milled or cut
from blocks or made with
prototype mould *5Testing –in application

87

Offer tocustomer *6Order9P

Mould designand construction *Prototypes *Approval forserial production*support provided by Getzner Werkstoffe

3Noise Reduction due toCustomized Vibration Isolation

Machines, technical equipment, household appliances, sanitary equipment
and pipes cause vibrations. Vibrations spread in housings, furnishing and buildings where they cause
noise and other problems. Thus,an effective vibration isolation isneeded. Sylocraft® is the best solution to get when you need efficientvibration isolation in small andcomplex geometries.

Efficacy
To ensure an effective vibration isolation the ratio of static to dynamic
stiffness needs to be as low as possible. In practical terms, it corresponds
to a better noise and vibration reduction in the final application.

G

etzner is an expert when it comesto vibration isolation – just like
you are an expert in your business.
Use our experience and our knowledge to get the best possible result
for your product. Precise knowledge
how to design an elastic bearing is
crucial for vibrations isolation meeting
highest demands (see “Efficient vibration isolation in detail”).

Your benefits— Fitting vibration isolation resulting in more silent, compact
products which are increasing
the comfort of your customers— No in-house competence invibration isolation, tool design,
tool management and testingneeded on your side
— Time and costs savings due
to custom-engineered design
process

Dynamic / Static ratio
3.0
2.5 *

2.0
1.5 *

1.0

0.0
Standard rubber

4Sylocraft®

* at 10 Hz

Fe(t)

Elasticbearing

x(t)

s(t)

m [kg]

Machine massc [kN/mm]

Spring stiffness

DDamping of the elastc bearing

Fe(t)Exciting force

x(t) [mm]MMovement of the machines(t) [mm]MForce transmitted to the floor

Fu(t)[N]FForce transmitted into the foundationc, DFu(t)Efficient vibration isolation in detail
The elastic installation elements and the mounted construction
create, from a physical point of view, an oscillatory system.
This is described using the single mass oscillator model andpossesses a resonance or natural frequency. The characteristic vibration frequency is derived from the mass m of thesystem and the dynamic stiffness c of the elastic bearing.

ƒ012πcm

The oscillatory system is excited by an external stimulus
and starts to vibrate. The model refers to this as the exciting
force. When assessing the isolating effect of a single massoscillator, the frequency ratio η between the excitation

frequency of the external stimulus (ƒe ) and the natural frequency of the vibrating system (ƒ0 ) has to be considered.

ηƒƒe0An isolation effect only occurs in the frequency range
fe/f0 > √2. So-called low frequency tuning occurs when thenatural frequency f0 of the system is around a factor of 1.41
lower than the lowest frequency fe of the mechanical vibrations.
In the resonance range fe/f0 < √2 there is an amplificationof the mechanical vibration in all cases, independent of thedampening.

5Applications and References

Noise and vibrations have a huge impact on humans: Lower noise levels
result in higher comfort. In addition,
regulations demand lower noise levels for certain applications or the
reduction of transmission of vibrations into the surrounding (SIA 181,DIN 4109). Sylocraft® helps you tominimize noise and vibration transferof your products and meet the given
requirements.

Proven efficacy in application
Tests with household-appliances
showed significantly better noise levels
when Sylocraft®was used as elastic
decoupling.

Applications— Refrigeration and air
conditioning— Machine bearings— Floor systems— Household appliances— Transportation— Sensors and electronic devices— Sanitary— Furniture and fittings— Power tools— Compressors— Fastening systems

Noise levels in- andoutside the house
20 dB

Air conditioning
Microwave
Blender
Refrigerator
Dishwasher
Vacuum cleaner
Washing machine
Dryer
Toilet flushing
Drill
Lawn mower
Generator
Tractor630 dB

40 dB

50 dB

60 dB

70 dB

80 dB

90 dB

100 dB

Proven efficacy inhoushold applications

ProjectHigh-performance blenders spread unwanted vibrations from the base feet to theentire counter or work surface. Disruptive noises accompany these vibrations.
The performance of Sylocraft® feet compared to standard rubber products wasevaluated.

–40 %Results
On average, Sylocraft® feet reduced acceleration and thus vibration by approximately 40 %.

Project
Coffee machines with grinders generate vibrations in the kitchen area. Thesecan lead to disturbing airborne noise. Sylocraft® elastic feet were installed on
the outside of the machine instead of standard rubber products.

–5 dB

Results
In measurements an improvement of 5 dB was reached.

ProjectMicrowaves generate vibrations and airborne sound due to transformer and fanoperation. Depending on the place of installation, vibration might be radiated into
the environment as secondary airborne sound. Sylocraft® elastic feet were installed on the outside of the microwave instead of standard rubber products.

–10 dB

Results
Measurements show beginning with 60 Hz Sylocraft® works up to10 dB better.

7

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