12.11  Plastic  Panel  Information  and
Repair

12.11.1 Description and Operation
12.11.1.1 Description and Operation

The current interior and exterior cover part materials are mainly
modified PP, ABS, PC + ABS, PVC (artificial leather material),
all  of  which  are  thermoplastic  materials  or  modified
thermoplastic materials. Some interior and exterior non-cover
part  materials  are  POM,  PA  type  and  HDPE  type  materials.
Thermosetting plastics are rarely used in interior and exterior
parts.  Only  the  ashtray  is  made  from  thermosetting  plastics.
Thermosetting  plastics  are  mainly  used  in  electrical  and
electronic  structural  components.  ideally  the  thermoplastic
components are repaired with a hot iron welding, but usually
the  thermoplastic  components  are  replaced.  Thermosetting
plastics can be repaired with epoxy resin, or other more rigid
two-component  repair  materials.  This  chapter  is  only  a  brief
introduction  to  its  repair  practices  and  repair  is  not
recommended.

Plastic Types:
Thermosetting plastic is defined as a type of plastic that can be
cured or have insoluble (melt) properties when heated, such as
phenolic, epoxy plastics. Thermoplastic is defined as a type of
plastic that can be repeatedly hardened after heated and soften
after  cooled  within  a  specific  temperature,  such  as
polyethylene, 

PTFE 

and 

etc. 

Thermoplastics 

and

thermosetting  plastics  can  be  either  hard  plastics  or  soft
plastics.

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Plastic Panel Information and Repair

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12.11.2 Removal and Installation
12.11.2.1 Plastic Repair Notices

1. Apply protective cream to any exposed skin to avoid skin

irritation.

2. Wear rubber gloves.

3. When  use  compressed  air  or  sanding,  wear  protective

goggles.

4. Remove  any  mixture  that  comes  into  contact  with  skin

immediately, as the mixture will become solid very quickly.

5. When grinding or sanding, wear a dust mask and protective

goggles.

6. Wash the skin with cold water to minimize irritation caused

by resin dust.

7. Avoid dropping repair materials onto clothes.

8. Use repair materials in a well ventilated environment, as the

dust produced during repairs is toxic.

9. After use, close all the repair material containers. Dust or

moisture will contaminate the repair materials and weaken
the repair quality.

12.11.2.2 Thermosetting Plastic Dent Repair

1. Clean the area to be repaired.

2. Heat the dent part with a blower until the appropriate tools

can be used to press flat the dent.

3. Grind the dent area with sandpaper/emery paper.

4. Clean the dent area with cleaning agent and leave it dry 5

min.

5. Apply a thin layer of adhesive and leave it dry 10 min.

6. Fill the uneven surface with adhesive and smooth out with

putty knife.

7. Use an infrared light to accelerate the curing process and

raise the temperature to 60-70°C (140-158 ºF), heat 15 min.

8. Polish the dent area with sanding paper.

9. Remove dust debris.

10. Apply a thin layer of adhesive and leave it dry 10 min.

11. Restore the plastic surface according to the plastic surface

repair process.

12.11.2.3  Thermosetting  Plastic  Scratch
Repair

1. Clean the area to be repaired.

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Plastic Panel Information and Repair

Body, Sheet Metal and Painting

2. Use sanding paper to remove protruding material.

3. Clean the area with cleaning agent and leave it dry 5 min.

4. Apply a thin layer of adhesive and leave it dry 10 min.

5. Fill the uneven surface with adhesive and smooth out with

putty knife.

6. Use an infrared light to accelerate the curing process and

raise the temperature to 60-70°C (140-158 ºF), heat 15 min.

7. Polish the dent area with sanding paper.

8. Remove dust debris.

9. Apply a thin layer of adhesive and leave it dry 10 min.

10. Restore the plastic surface according to the plastic surface

repair process.

12.11.2.4 Thermosetting Plastic Crack Repair
(length less than 100 mm)

1. Clean the area to be repaired.

2. Pry open the crack tip 5 mm (0.19 in) long, and polish it into

a  V-shape  crack  to  eliminate  stress  and  protruding
materials.

3. Clean the area with cleaning agent and leave it dry 5 min.

4. Apply a thin layer of adhesive and leave it dry 10 min.

5. Apply  the  adhesive  to  the  back  of  the  repair

part,overlapping the damaged part at least 20 mm (0.79 in).

6. Use an infrared light to accelerate the curing process and

raise the temperature to 60-70°C (140-158 ºF), heat 15 min.

7. Fill the crack area with adhesive and smooth out with putty

knife.

8. Use  an  infrared  light  to  accelerate  the  crack  tip  curing

process.

9. Polish the dent area with sanding paper.

10. Apply a thin layer of adhesive and leave it dry 10 min.

11. Remove dust debris.

12. Apply a thin layer of adhesive and leave it dry 10 min.

13. Restore the plastic surface according to the plastic surface

repair process.

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Plastic Panel Information and Repair

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12.12 Collision Repair

12.12.1 Specifications
12.12.1.1 Collision Repair Materials

Vehicle body collisions will lead to structural deformation, metal
penal  cracking  and  solder  joints  seal  off.  Collisions  will  also
cause damage to the engine, chassis and other components.

To carry out body collision repair, materials such as adhesives,
sealants, anti-loose agent, surface protection materials, anti-
corrosion materials and other chemical materials may be used.
Please strictly follow the product instructions, scope of use and
the  standard  operation  instructions.  During  the  body  repair
process, choose repair materials that suit the application. The
following table lists the repair materials that maybe used in the
body repairs for reference.

Products

Type

Application

Recommended Model

Body Sealant

Single Unit Polyurethane

Body skin, interior and exterior trim panels, body
structure and other components bonding. This seal
has a strong cohesive force. It also has good
adhesion with metal and a variety of lacquer and so
on have a good adhesion.

Tianshan Kesaisi New:
1922,1923

Seam Sealant

Single Unit Polyurethane

Based

1. Room temperature curing adhesive used for

sealing the body welds.

2. Room temperature curing adhesive used for

doors, hood and trunk (hatchback) hem.

China's Auto Parts and
Accessory Corp: C8802

Anti-Collision Primer

Rubber and Resin

Cured at room temperature, form a layer of anti-
collision coating under the vehicle body. Around the
wheelhouse form a layer of permanently elastic anti-
aging, anti-corrosion protection coating, crack free at
low temperature.
These products can replace PVC coating with
excellent anti-rust, noise, anti-stoning, anti-
oxidation, protective coating and other functions.

China's Auto Parts and
Accessory Corp: C312DW

Windshield Sealant Single Unit Polyurethane

Room temperature curing polyurethane adhesives
for the automotive window direct bonding, sealing.
The adhesive has excellent adhesion properties, and
it reacts with moisture in the air to become solid and
has high strength, anti-aging, anti-vibration fatigue,
low temperature resistant and non-corrosive
characteristics.

China's Auto Parts and
Accessory Corp: C8802
Tianshan Kesaisi New:
1956,1924

Primer

-

The primer is applied before applying glue on the
windshield and the body and, so that the windshield
glass and the body are firmly bonded.

-

Cleaner

-

Clean all floor coatings and surfaces contacting
adhesives.

-

Pressure Sensitive

Tape

Acrylic Acid Tape

Used as the anti-scratch panels, nameplates, shield,
fenders, door protection, a variety of decorative body
adhesive strips.
This tape has excellent weathering resistance and
durability.

3M 4229P, 4215,4221 L

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Collision Repair

Body, Sheet Metal and Painting