ACOUSTIC SYSTEMSQUIETER RIDESSTART WITH SIKA
LIGHTER | STRONGER | SAFER | QUIETER | GREENER

YOU NEED TO FIND WAYS TO MAKE YOUR
NEXT VEHICLE LIGHTER, STRONGER,SAFER, QUIETER OR GREENER.
SO WHERE DO YOU START?
Start with a trusted partner that can deliver global innovation on a localized scale, whereverand whenever it’s needed. Start with a commitment to continuous improvement, and theknowledge that it takes years to become an overnight success. Start with a collaborative
approach that can bring together great minds without knocking heads. Start with pioneering
innovation that clears a path for the vehicles of the future, no matter what form they take.
START WITH SIKA.
With a full suite of bonding, damping, sealing and reinforcing solutions, Sika is a key strategic
partner for both OEMs and component suppliers. By collaborating on advanced acoustic
systems in an early project stage, we help our customers to enhance global projects with highperformance as well as EHS-friendly products fitting your specific requirements.

CONTENT

04

Overview Acoustic systems

06

Cavity Sealing

09

Vibration Damping10Comfort

11

Lightweighting

13

Acoustic Testing

14

Innovation

ACOUSTIC SYSTEMS
Content3

CAVITY SEALING
Expand your NVH Options with SikaBaffle® and SikaSeal®

SIKABAFFLE® AND SIKASEAL® SOLUTIONS use lightweight,
pre-shaped molded, extruded, die-cut parts and bulk pumpables
within the primary body structure to effectively block common
noise transmission paths.
SikaBaffle® and SikaSeal® product families include thermoplastic
and elastomeric-based formulations. They are designed to beheat activated and expanded inside vehicle body cavities.

BENEFITŚ 100% sealing, preventing noise, water and moisture entering the vehicle
́ Applicable in the body shop with a wide curing temperature rangé Effectively resistant to multi-bake curing
́ Design solutions for both acoustics and water sealing concepts
́ Full range of design options through injection molding, extrusions
and bulk pumpables

THE RIGHT MATERIALS AT THE RIGHT PLACESikaBaffle® and SikaSeal® represent a full range of products
designed to improve vehicle acoustic performance by effectively
sealing the car body and reducing noise transmission. Materials
can be processed as injection molded parts to seal complex
cavity shapes; alternatively simple designed extruded parts canbe applied. Our new bulk pumpable baffle solution is applicablein the Body Shop and is ideal for automated application in areas
requiring narrow cavity filling.

ENGINEERED INJECTION MOLDED PARTS
Solutions that are applicable to protect any
body cavity section from noise propagation andelements intrusion. Watertight for lower-bodyareas, acoustic concepts for upper-body dry areas.

4

ACOUSTIC SYSTEMS
Overview

EXTRUSION TECHNOLOGY
Foam only applications targeting smallto medium-sized cavities. Adding versatility,adaptability and design flexibility.

PRODUCT KEYSealingDamping

BULK PUMPABLE TECHNOLOGY
One-component bulk sealants fornarrow cavities. Design flexibility
supporting full automation concepts.

VIBRATION DAMPING
Optimized Panel Damping with SikaDamp®

SIKADAMP® solutions comprise a broadfamily of sound deadeners based onelastomers or bitumen, which can also
be coupled with a constraining layer.
Designed for best-in-class weight-toperformance ratios, while still providing
industry-leading damping performance,
SikaDamp® can be applied at any point
during vehicle assembly or be installed at
the stamping location.
BENEFITŚ Full range of solutions that allow effective structureborne noise reduction of car body elements
́ Improved targeted acoustics without compromisingweight́ Hybrid versions available for damping performanceand panel stiffening in one product́ Ultra lightweight productś Automated application processes add value andperformance
HIGHLY TARGETED, HIGHLY EFFECTIVE
SikaDamp® is versatile in application as a magnetic,
self-adhesive, melt-adhesive or peel-and-stick productin standard and custom shapes. Placement and shapeof parts can be highly tuned through laser-vibrometer
analysis of the entire body panel system, whichallows for targeted, cost-efficient use, while achieving
maximum damping effect.

MONOLAYER DAMPING
Highly versatile for flat, curved, crimped,
vertical and overhead use. Can be applied
throughout the body production process.

CONSTRAINED LAYER DAMPING
Best-in-class acoustic performance, highly
effective on doors and panels. Hybrid
versions combine acoustic damping andpanel stiffening in a single product.

ULTRA LIGHTWEIGHT DAMPING
Constrained layer expandable materialsystem which achieves up to 80%
weight savings with exceptional acoustic
performance possible.

ACOUSTIC SYSTEMS
Overview

5

CAVITY SEALING

The right Materials with the right Design at the right Place

1

2

3
1 SikaBaffle® part in a body cavity
2 SikaBaffle® extruded, non-expanded
3 SikaSeal® pumpable Baffle expanded

APPLICATIONS

Typical applications for SikaBaffle® and SikaSeal® products include pillars, roof sections, cowl and rocker areas.
These products enable complete sealing of vehicle body cavities; with watertight solutions for the lower bodyand acoustic solutions for dry upper body areas.

6ACOUSTIC SYSTEMS
Cavity Sealing

PRODUCT SPECIFICATIONS
Cavity Sealing

SIKABAFFLE® AND SIKASEAL® products can be processed as highly engineered 3D parts which
optimize material usage and enhance performance at the best cost-to-volume ratio. Extrusion andbulk pumpable technology can be used as an alternative targeting applications on narrow-sizedcavities; simply designed parts can be added readily even during late stages of development.

SIKABAFFLE® AND SIKASEAL® PORTFOLIO
SikaBaffle®-­4 00 series

SikaSeal®-­700 series

SikaBaffle®-­200
tape seriesSikaSeal®-800
bulk series

SikaBaffle®-­2 7x
repair series

Applications

Acoustic, water sealing,fuel resistant

Water sealing

Acoustic, water sealing

Acoustic,
water resistantRepairTechnology

Thermoplastic

Thermoplastic

Rubber

1C Rubber

2C PU

Curing temperature(in °C)

140 to 210 °C

160 to 200 °C

160 to 205 °C

155-205 °C

ambient temp.

Steel+++++Aluminum+++++

Plastics+++++

Expansion Rate(% volume)

250 to 2000 %>1600 %

600 to 1200 %>500 %>2000 %

Design options

Injection molded
or extruded

Injection molded
or extrudedExtruded

Bulk pumpable

Aerosol canAdhesion

ProductSIKAMID®

Sikamid® is the proprietary material used to create supporting carriers forsealing and acoustic parts. It is available in a variety of colors formulated
to meet the specific mechanical, thermal and processing requirements ofeach application.

REPAIR SOLUTIONSSikaBaffle® Repair can be used for manual application in vehicle production
as well as for repair and service solutions. SikaBaffle® Repair is available
as a ready-to-use, 2C polyurethane foam that cures quickly at ambient
temperature and reliably seals cavities against noise, air, water and dust.

ACOUSTIC SYSTEMS
Cavity Sealing

7

COMFORT - THE EAR PLAYS A
CENTRAL PART
Some people can tell the make of a car from the slamming of the door alone. In the development
process of new vehicles, vehicle sound design is gaining importance in terms of shaping its character,
comfort optimization and value perception.
Customers' requirements are specifically geared towards eliminating or reducing low-frequency
background noise, in order to increase acoustic comfort during driving. At the same time, theadded value for our customers is in the cost effectiveness of the materials used and their weightreducing effect.
8

ACOUSTIC SYSTEMSSound Damping

PRODUCT SPECIFICATIONS
Vibration Damping

SIKADAMP® products - from the first idea through simulation and prototyping - are developed andmanufactured tailored to seal body structure and reduce structure-borne sound.

SIKADAMP® ACOUSTIC PORTFOLIO
Product

SikaDamp®-100 series

SikaDamp®-200 series

SikaDamp®-300 series

SikaDamp®-600 series

SikaDamp®-700
Ultralight series

Technology

Bitumen non magnetic

Bitumen magnetic

Bitumen-freeproduct line

Butyl

Expandable bitumen

Bottom LayerSelf-adhesive or
MeltsheetSelf-adhesive or
MeltsheetSelf-adhesiveor meltsheet

Self-adhesive

Self-adhesive or
Meltsheet

Place of Application

Body, Paint, Trim shop

Body, Paint, Trim shop

Body, Paint, Trim shop

Body, Paint, Trim shop

Paint, Trim shop

Steel+++++Aluminum+-+++Plastics

(+)

(+)

(+)

++

Function

Acoustic, Hybrid
acoustic/stiffening

Acoustic, Hybrid
acoustic/stiffening

Acoustic, Hybrid
acoustic/stiffening

Acoustic, sheet metal
hole sealing

Lightweight acoustic

Surface weight

2-5 kg/m2

3-8 kg/m22-8 kg/m2

2-4 kg/m2

1-3 kg/m2

Loss Factor

0,10-0,35

0,10-0,35

0,10-0,35

0,15-0,45

0,15-0,35

Design options

Die-cut,
automated application

Die-cut,
automated application

Die-cut,
automated application

Die-cut,
automated application

Die-cut,
automated application

SIKADAMP® AUTOPAD

Butyl-based system especially designed for automated application of sealing elements
for sheet metal holes, also providing corrosion protection, water tightness and targetednoise damping function.

SIKADAMP® HYBRIDAdvanced material system that adds stiffness and improves the structural noise
performance of the treated components such as door panels. It combines the highacoustic performance of SikaDamp® with the panel stiffening effect of SikaReinforcer®.

ACOUSTIC SYSTEMS
Vibration Damping

9OPTIMIZING COMFORTAND FUNCTIONALITY
THE FULL RANGE of Sika’s Acoustic Systems
provide more flexible and efficient solutions
that can be optimized and tuned throughout thedevelopment process to accommodate the NVH
impact of design decisions.

QUIETER RIDES WITH SIKA’S
ACOUSTIC SOLUTIONSSIKABAFFLE® ACOUSTIC
Acoustic designs which combine the advantages of materials
with designs to enhance acoustic performance for airborne
noise, tailored to specific body locations while also being able
to be used in any location of the vehicle.

SIKADAMP® HIGH DAMPING PERFORMANCE
Butyl or bitumen based HDP products specially formulated andcoupled with a constrained layer designed to achieve highest
damping effect to reduce structure borne noise.

2
1 Expanded SikaBaffle® in steel cavity

10

ACOUSTIC SYSTEMS
Comfort2 Automated application of SikaDamp®

1

AUTOMATED APPLICATION
SikaDamp® products can be optimized and robotically applied.
An automated system which combines the benefits ofdamping pads performance and LASD application.
SikaSeal® pumpable baffle is the ideal solution to seal longnarrow cavities when highly automated application is required.
This bulk solution can be applied in the body shop using
standard application conditions and equipment.

LIGHTWEIGHTINGWITH DESIGN FLEXIBILITY
LIGHTWEIGHTING WITH DESIGN FLEXIBILITY
With weight reduction a recognized key driver in the automotive design process, engineers are
increasingly creative in their efforts to meet lightweight goals. Cutting the weight, however, cancreate unanticipated noise issues late in vehicle development. Sika's lightweight solutions provide
reduced weight with no performance compromise.
ULTRA LIGHTWEIGHT DAMPING MATERIALS
Our newest innovation in damping offers up to 80 % weight reduction as compared to similar and competitive products.
Targeted damping is a highly effective way in eliminating noise associated with vibration in body panels. SikaDamp®-Ultralightis a constrained layer material which provides highly effective damping. In application, typically area weights of 5 kg/m2 can be
reduced to 1,1 kg/m2 while achieving higher acoustic performance.
HIGH-EXPANSION CAVITY SEALING MATERIALS
Our newest SikaBaffle®-400 family is available with a very high-expansion rate, which enables designs that use less material
without compromising the sealing and acoustic performance. In some cases material usage can be reduced by >20 % overconventional solutions.

121 SikaDamp®- Ultralight
2 SikaBaffle® injected parts
3 Application of 3D printing technology

THE FUTURE IS NOW - 3D PRINTING AS A DESIGN ADVANTAGE
Applications of additive manufacturing technology at Sika include design
validation and creation of functional parts. 3D printed molds can be used
to generate parts for validation, prototyping and small series. Additive
manufacturing is an effective solution for functional and performance
testing, optimized design and rapid prototyping.

3ACOUSTIC SYSTEMSLightweighting

11

STATE-OF-THE-ART
In our state-of-the-art acoustic test facilities, Sika engineers and application
experts perform virtual and physical testing, analyze the results and propose
solutions that deliver optimal weight-to performance ratios for each application
and acoustics treatment package for vehicles.

ACOUSTIC TESTING
State-of-the-Art Technology Centers

THE SIKA TECHNOLOGY CENTERS (STC)
have been designed to support the development,
validation and optimization of sealing, damping,bonding and reinforcing products and solutions.
A centerpiece of the STCs are the Acoustic Test Centers.
Each has a comprehensive range of material testing
capabilities, which includes sound absorption, vibration
damping and sound transmission loss. Additionally, vehicle
subsystems and full vehicles can be evaluated for noiseand vibration.
Sika Acoustic Test Centers also include scanning laser
vibrometers, psycho-acoustic equipment, and vehicle
body leakage testers to assess the effectiveness of theacoustic systems in support of product development andcustomer programs.

FULL VEHICLE NVH TESTING CAPABILITIESThe focal point of the Acoustic Test Centers is the vehicle
chassis dynamometer, housed in a hemi-anechoic environment.
Full vehicle NVH testing under a controlled environment canbe conducted. To demonstrate real-world driving performance,
testing can be done either indoors with a variety of simulatedroad surfaces or on a dedicated test track.
TARGETED STRUCTURAL NOISE OPTIMIZATION
For structure borne noise Laser Doppler Vibrometer (LDV)
studies can be performed to optimize damping packagelayouts. Reduced weight without compromising acoustics,
optimized acoustic performance without unnecessary costs.
OLF - A SIKA FIRST TECHNOLOGYThe newly developed OLF (optical determination of lossfactor) measuring technique enables the precise measurementof the damping characteristics of single and multiple layermaterials at different temperatures and in high-resolution
over a broad frequency range.

STC EFFORTS focus on the latest automotive megatrends
in terms of comfort and new challenges with the increasing
importance of new energy vehicles.

12

3

1 Acoustic test track
2 Laser vibrometer test equipment
3 OLF testing (optical determination of loss factor)

ACOUSTIC SYSTEMS
Acoustic Testing13

INNOVATION, IT STARTS WITHPASSION

AT SIKA, WE BELIEVE that a truly innovative company is one that starts with a culture within which apassion for innovation and creativity thrive. An innovative company should also take a customer-focusedview; one that anticipates customer needs with a thorough understanding of key market trends.
LIGHTERWe have a full range of products which enable ourcustomers to make their vehicles lighter. For example,
we were the first to engineer body shop adhesives(SikaPower®), which enable mixed-material bonding oflighter materials such as aluminum, carbon fiber reinforced
plastic, as well as traditional and high strength steels.
STRONGER AND SAFER
We were the pioneer in vehicle exterior parts bonding withour Sikaflex® + Booster and SikaForce® products and ourSikaReinforcer products, which not only help stiffen thevehicle for better overall dynamics but also improve crashperformance and increase vehicle occupant safety.
QUIETERWe provide solutions that make vehicles quieter; SikaBaffle®
seals noise pathways, while SikaDamp® reduces the body
panel vibration that contributes to audible noise in thevehicle. Both products are engineered for best-in-classweight-to-performance ratio. Used together, or separately,
our industry leading acoustics solutions improve vehicle
occupant comfort.
GREENERWe were the first to establish water-based pre-treatments
and polyurethane hotmelts with low monomericisocyanate content and reactive polyolefin hotmelts free ofclassification to the automotive interior market – a moreenvironmentally friendly approach that easily outperforms
the industry’s previous generation of products.
VALUE-ADDED INNOVATION
We continuously develop new, cost-effective solutions,which allow our customers to use less material or reducecomplexity in their manufacturing process. SikaPower®
structural adhesives, for example, allow the reduction ofwelds in vehicle body sections, while strengthening overallcrash durability. Anticipating megatrends we also offer
a full range of solutions for assembly of e-mobility
components and vehicles

14

ACOUSTIC SYSTEMS
Innovation

START WITH SIKA
30 MILLIONVEHICLES

MORE THAN

50% OF ALL
VEHICLESPRODUCED ANNUALLY WORLDWIDE CONTAIN
SIKA LAMINATION ADHESIVESUSE SIKA PRODUCTS ANDTECHNOLOGIES

25 MILLION PLUS

VEHICLES MADE STRONGER AND SAFER EACH
YEAR WITH OUR BODY SHOP ADHESIVES

30% WEIGHTREDUCTION
IN THE CAR BODY CAN BE ACHIEVED
WHEN SIKA® PROPRIETARY
HIGH-STRENGTH BONDING SOLUTIONSARE USED IN CONJUNCTION WITH
LIGHTWEIGHT MATERIALS AND THINNER
MATERIAL CONSTRUCTION

MORE THAN

300,000 LITERSOF VOCS WERE REDUCED THROUGH THE USE
OF SIKA’S PRIMERLESS TO GLASS WATER-BASEDPRE-TREATMENT SYSTEMSMORE THAN

SIKA HAS

CAR WINDOWS ARE BONDED
DURING ASSEMBLY USING
SIKAFLEX®

IN OVER

70 MILLION

20,000+ EMPLOYEES
100 COUNTRIESMORE THAN

MORE THANPARTS BASED ON OUR SIKABAFFLE®, SIKADAMP® AND
SIKAREINFORCER® TECHNOLOGIES ARE SUPPLIED ANNUALLYTO THE GLOBAL AUTOMOTIVE INDUSTRY

INTERIOR NOISE
REDUCTION IN VEHICLESTHANKS TO SIKA’S
ACOUSTIC SOLUTIONS

700 MILLION

30%

ACOUSTIC SYSTEMS
About Sika15GLOBAL REACH BUT LOCAL PARTNERSHIP

START WITH SIKA THROUGH ANY OF THE
CONTACT POINTS BELOW:AMERICAS
Sika Automotive N.A.
30800 Stephenson Hwy.
US-Madison Heights, MI 48071+1 248 577 0020

Sika Automotive
Hamburg GmbH
Reichsbahnstrasse 99
DE-22525 Hamburg+49 40 540 020

Sika S.A.
Av. Dr. Alberto Jackson
Byington, 1525
CEP 06276-000 Osasco
BR-São Paulo+55 11 2877 6521

Sika AutomotiveFrankfurt-Worms GmbH
Weinsheimer Str. 96
DE- 67547 Worms+49 62 41 3 010
Sika Automotive Belgium S.A.
Avenue Landas 2Zoning Industriel
BE-1480 Tubize - Saintes+32 2 367 21 20

Sika Mexicana S.A. DE C.V.
Carretera Libre a Celaya Km 8.5
Fracc. Ind. Balvanera
Corregidora, Qro.
CP 76920
MX-Querétaro
+52 442 238 5800

Sika Turkey Otomotiv San. ve
Tic. Ltd. Şti.
Yenişehir Mh. Reyhan Cd.,Enginsu Sit. VL1 D:37/12
34912 Pendik/Istanbul
Phone: +90 216 5600-801

Our most current General Sales Conditions shall apply.
Please consult the most current local Product Data Sheet prior to any use.

www.sikaautomotive.com

ASIA PACIFIC
Sika Ltd.
Akasaka-K-Tower 7F, 1-2-7
Moto-Akasaka, Minato-ku
JP-107-0051 Tokyo+81 4 6321 1101
Sika Korea Ltd.
35-8 nonhyeon-dong
Gangnam-gu
KR-135-815 Seoul+82 31 8056 7777
Sika India Pvt. Ltd.
501 & 502, B Wing,Lotus Corporate Park, Goregoan East
IN-Mumbai 400063+91 22 4038 4038
Sika (China) Ltd.
No. 28 Jing Dong Road
Suzhou Industrial Park
CN-215121 Suzhou+86 512 6273 2888

© 2022 Sika Automotive. All Rights Reserved. / Automotive Acoustic / 12.2022

EUROPE
Sika Automotive AG
Kreuzlingerstrasse 35CH-8590 Romanshorn+41 58 436 58 01