Bus and coach manufacturers face particularly tough challenges for construction of roof assemblies for modern bus and coach vehicles. Apart from obvious requirements for long-term durability and resistance to harsh climates, additional requirements include lowest possible weight (vehicle handling and fuel economy), highest possible strength (roll-over resistance for occupant safety) and increased functional complexity (air conditioning units, sunroof apertures). Sika has developed a range of speciality formulations with ideal characteristics to enable vehicle OEM’s to meet these requirements with optimum quality, consistency and cost. Sikaflex provides high-performance elastic assembly within an easy-to-use one-component formulation. SikaForce two-component provides the high performance of polyurethane systems combined with long open time and process advantages. SikaPower structural adhesives and sealants are heat-curing products for metal bonding applications based on one- and two-component PUR-epoxy hybrid technology.
| |  Transportation Industry
Bus & Coach
Body Structure
Floor, Side Panels & Luggage...
Roof Bonding
Front & Rear Module
Direct Glazing
Interior Trim
Acoustic Management
Download Brochure
|
Modern roofs bonded with Sikaflex enable good
and durable sealing as well as cost effectiveness | | |
| | | |
| Technological Benefits | | |
| |
 |
|
|
| - |
|
Enhanced aesthetics and aerodynamics via elimination of visible fixings |
|
| - |
|
No damage to corrosion protection system |
|
| - |
|
Excellent resistance to harsh climatic conditions |
|
| - |
|
Reduced weight versus mechanical fastener based systems |
|
| - |
|
Improved water and moisture leak resistance |
|
| - |
|
Improved sound and vibration damping |
|
|
| | |
| | | |
| Why Use Bonded Roof Panels? | | |
| |
|
|
|
| - |
|
Bonded assemblies enable weight reduction versus mechanically fastened systems at the top of the vehicle, enabling weight reduction (better fuel economy and emissions) and optimising vehicle driving characteristics and active safety |
|
| - |
|
Use of adhesives and sealants does not damage the vehicle corrosion protection layer, therefore reducing the likelihood of repair |
|
| - |
|
Adhesive systems absorb vibration, improving interior and exterior vehicle noise levels |
|
| - |
|
Bonded and sealed systems provide enhanced water leakage resistance to minimise vehicle repair frequency and time |
|
|
| | |
| | | |
| Future Trends for Roof Panels | | |
| |
|
|
|
| - |
|
Increased use of advanced composites |
|
| - |
|
Use of more environment-friendly paint systems |
|
| - |
|
Increased requirements for vehicle roll-over protection |
|
|
| | |
| | | |
Best Recommended Sika Products
Features & Benefits | | |
|
Sikaflex-221 |
|
High-quality multi-purpose sealant and adhesive, suitable for making permanent elastic seals of high adhesive strength |
|
PDS MSDS |
|
|
Sikaflex-254 |
|
Extremely easy to use; long open time with fast curing time; multi-purpose system; widely OEM approved |
|
|
Sikaflex-521 UV |
|
Joint sealant with excellent UV, ageing and weatherresistance, reduced substrate surface preparation needed. Solvent and VOC-free |
|
|
Sikaflex-552 |
|
UV-stable assembly adhesive for sealing and bonding, excellent adhesion properties, ecology friendly; suitablealso for exterior joints
|
|
PDS MSDS |
|
|
SikaForce-7550 |
|
Two-Component, high-strength elastic assembly adhesive |
|
|
SikaPower-460 C1 |
|
Excellent dimensional bead stability with broad tolerance range; optimum read through resistance; pre-curing not required; high-performance corrosion protection; excellent mechanical properties |
|
|
SikaPower-496 |
|
Excellent adhesion on oily substrates; high-performancestructural adhesive; heat cured; crash/impact-resistant system |
|
| | |
