Sika is a key manufacturer of structural bonding solutions for vehicle manufacturing. For the replacement of outer panels as well as structural components of passenger cars Sika offers a complete system solution.

Most Effective Joining Technique

Structural bonding is the most effective joining technique employed in the body shop. Car manufacturers around the world rely on SikaPower® adhesives.

SikaPower®-4720 is a toughened, high strength two-component epoxy adhesive with built-in corrosion protection and excellent adhesive properties. It is suitable for panel bonding with exposure to high dynamic stress areas. This structural adhesive can easily be spot-welded, even when wet.
 

Car body repair with adhesive in a car factory

Best Recommended Products for Panel Bonding

Frequently Asked Questions

Can SikaPower®-4720 be spot-welded?

Yes, SikaPower®-4720 can be spot-welded within the working time.

Posted on: 11/07/2019
Why do I need to apply SikaPower®-4720 to both sides?

To ensure best corrosion protection behaviour, SikaPower®-4720 is applied on both bond faces covering all grinded areas.

Posted on: 11/07/2019
Why do I need to apply a round bead on the spread layer of SikaPower®-4720?

The round bead guarantees a bond without any air entrapments to ensure optimum strength and corrosion protection.

Posted on: 11/07/2019
Why is the surface of SikaPower®-4720 grainy?

The slightly structured surface is caused by glass beads which ensure a perfect bond thickness of 0.3mm and prevents from over clamping.

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What are benefits of panel bonding?
  • Mutli material design does often not allow to weld anymore and requires bonding technology
  • High strength steels types lose their performance if they are treated with heat -> Cold repair process with structural bonding combined with rivets lead to optimal repair performance
  • Welding applications often involve hours of preparation and dismantling work whereas bonding offers an efficient repair process
  • OE assembly is done using bonding technology
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How can I increase the extrusion speed of SikaPower®-4720?

As SikaPower®-4720 is filled in a convenient coaxial cartridge a rather high extrusion force is the result which can be lowered by warming up the cartridge before the application.

Posted on: 11/07/2019
Why a piston type gun is required?

An air pressured gun without piston could lead to extrusion of just one component or air intrusion having a negative effect on the performance. Piston type gun is a must to ensure performance.

Posted on: 11/07/2019
Is SikaPower®-4720 used for OE assembly?

Products use in OE metal bonding are 1C epoxy products curing during the paint process at high temperatures which cannot be applied for repair processes. Therefore a ambient temperature curing 2C Epoxy is used.

Posted on: 11/07/2019