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Step 1 Identifying plastic |
| Code |
Plastic |
| ABS |
Acrylonitrile Butadiene Styrene |
| ABC/PC |
Polymer alloy of above |
| PA |
Polyamide (nylon) |
| PBT |
Polybutylene Terephtalate (POCAN) |
| PC |
Polycarbonate |
| PE |
Polyethylene |
| PP |
Polypropylene |
| PP/EPDM |
Polypropylene/Ethylenediene Rubber |
| PUR |
Polyurethane (Not all PUR is weldable)
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| PVC |
Polyvinyl Chloride |
| GRP/SMC |
Glass Fibre Reinforced Plastic (NOT
WELDABLE) |
RECOGNITION BY TEST WELDING
If all other
information is unavailable a test weld can be tried on the back of
the component using a rod from the identified mixed bundle of
plastic welding rods.
Method:
- Fit the
appropriate welding nozzle for the selected welding rod to the
LEISTER TRIAC hot air tool.
- Set the welding
temperature on the rotary control according to the welding rod
material to be employed in the test (see table on Main Welding).
Allow the tool to attain the desired temperature.
- Feed the welding
rod through the nozzle and Into contact with the surface of the
component.
- Following the
technique described in Main Welding operations, weld 2cm of the
test rod to the surface of the component.
- Remove the
welding tool from the rod and then cut the rod approximately 2cm
from the component surface.
- Allow the weld
to cool and then try to pull the rod from the surface of the
component. If it can be pulled from the component repeat the
test with a different rod. If it stays firmly placed the
component plastic has been positively identified.
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MARK YOUR
CALENDARS
for these special events!
Long Beach
Convention Center
July 17-19, 2008
SGIA 08 Booth 2119
October 15-18
Atlanta, GA
Pack Expo
Booth TBA
November 9-13
Chicago, IL
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