Mazda CX-7 2007 Bodyshop Manual page 134

PROCEDURE[PLASTIC BODY PARTS]
Repair of polypropylene bumpers having damage that has reached the surface of the polypropylene and are too
serious to be restored by painting only.
Hole
A-A Section
1. Cut the rough edges around the damage with a knife to make it smooth. Sand the area with a sander to make
an angle of about 45°.
A-A, B-B, C-C Section
Cut with knife
Sand
09-80E–4
BODY STRUCTURE [PLASTIC BODY PARTS]
A
A
1
B-B,
C-C
2
3
4
1
Top coat layer
3
Primer layer
Polypropylene surface
45°
Angle necessary for deposit of polypropylene welding rog
Crack
B
C
B
C
Section
2
Primer surface layer
4
Polypropylene layer
Flaw
D-D Section
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D-D Section
Cut with knife
Sand
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D
D