Body Repairs - General Information » Plastic Repairs
Plastic adhesive bonding
Adhesive bonding of plastics has some advantages
over welding methods:
- Within the group of thermoelastic plastics, all
semi-rigid ancillary components (such as
bumpers, front grilles, etc.) can be repaired
without identification.
- A two-component polyurethane based adhesive
is used for all thermoplastic parts.
- Reinforcement strips can be attached behind
splits (split length up to max. 100mm) and openings to ensure the original
strength
properties.
Tools and equipment also familiar from paint
repairs can be used in making adhesive repairs to
thermoplastic components.
Angle grinders and belt sanders can be used to
grind out scratches and splits. Orbital sanders with
extractors are used for fine sanding.
The infrared heater is used to provide fast and
certain drying throughout.
Plastic adhesive set
Item |
Description |
1 |
2-component adhesive |
2 |
Cartridge gun |
3 |
Mixing tube |
Apart from the components shown, other materials
may be needed to bond plastics, depending on the
repair position.
For large scale repairs, it may be necessary to
insert reinforcement panel strips and reinforcement
matting as fixing aids.
Repair sequence during plastic adhesive bonding:
NOTE: Follow the manufacturer's guidelines when
using adhesives.
- Prepare the location of the bond. Remove paint
residues and sand the area to be bonded. Drill
out the ends of the split to stop it spreading
further. Prepare the bond location into a
V-shape and clean it with plastic cleaner.
- Apply the adhesive. The two-component
adhesive is applied to the cleaned and primed
repair location using a hand gun. Spread and
smooth the adhesive using a flexible plastic
spatula.
- Rework the bond location. After cooling, sand
the raised adhesive. Clean the sanded repair surface using plastic cleaner.
Apply plastic
primer thinly to the repair surface. Apply paint.
More about «Plastic Repairs»:
Plastic adhesive bonding