Plastic Repairs: Diagnosis Saab 9-4X I

Float Test

1. Cut a shaving of plastic from the back of the part. The shaving should be free of mold release agents and paint.
2. Place the shaving in a container of water.

1. Thermoplastic polyolefin floats.
2. Thermoset non-polyolefin sinks.

Abrasion Test

1. Sand a spot near the damaged area with Grade 36 Roloc Disc.
2. Thermoplastic polyolefin material melts or frays when sanded.
3. Thermoset non-polyolefin material sands cleanly.

Thermoplastic and thermoset plastics can be either rigid or flexible. Thermoplastic plastic parts are best repaired with a hot iron plastic material-feed welder, but are usually replaced. Thermoset plastic can be repaired with epoxy or other more rigid 2 package repair material.

1. For rigid thermoset repair materials, refer to «RIGID PLASTIC PART REPAIR MATERIALS»(ref-652271-S18354707792014082300000) .
2. For flexible thermoset repair materials, refer to «FLEXIBLE PLASTIC PART REPAIR MATERIALS»(ref-652271-S38916461452014082300000) .
3. For general repair instructions, refer to «General Plastic Repair»(ref-652271-S26100390372014082300000) .