Paint - Anti Chip Coatings
Bulletin 84-10-11Date Mar '84
Ref. No. 84-147-10
SUBJECT: ANTI-CHIP COATINGS (PLASTISOL)
MODELS AFFECTED: ALL
Most late model vehicles have either a smooth anti-chip (gravel guard) material or the more familiar textured type applied to the lower front fenders, rocker panels and quarter panels..
FIGURE 1:
The smooth anti-chip, because of its smooth appearance, is very difficult to detect. One method of detecting its presence is to check the film build in the areas that require protection (See Figure 1). Normal unprotected exterior finishes have a total film build between 3.0 and 4.0 mils while protected areas have a range of 5.0 to 11.0 mils.
When repairing existing anti-chip or adding anti-chip material where there was none, the following guides will aid in achieving either a smooth or textured finish. In any case, manufacturer's label directions should be read prior to application.
Type of Finish Adjustment
Smoother (Less Texture) More thinner and/or
increase gun distance
Uneven (More Texture) Less thinner and/or
decrease gun distance
Tighter Pattern Decrease air pressure
and/or gun distance
Wider Pattern Increase air pressure
and/or gun distance