kincrome K15353, Быстрый старт

Страница: 5 / 10

5
PLASTICS WELDING KIT
Note: The below information is a guide only and should help confirm the material, however as some materials can be blended
together in the manufacturing process you may need to seek professional advise if you are unable to verify your material type. (Any
costs associated in the identification of your plastic material, will not covered by Kincrome). If possible, keep samples of plastic
materials that you already know to compare with the unknown plastic you are trying to weld or repair.
Warning: Some of the following tests may require the use of a flame. Always ensure that you use appropriate PPE safety
equipment & conduct any testing in an appropriate area.
Float Test
Fill a container with clear water (the water should be around room temperature). Cut small pieces of the plastic you want to test,
and add the plastic samples to the water and observe the behaviour of the materials. In most instances ONLY plastic HDPE, LDPE
& PP materials will float, All other plastics will normally sink.
Burn Test
This method is one of the most accurate tests you can do by yourself. Different plastic material reacts differently when
burning. For this test you should have prior knowledge as to how different types of plastics behave and smell while burning.
burning. Visit the Kincrome website kincrome.com.au , type in the product code for the plastics welding kit K15353, then
in the downloads section you will find a chart to assist you in identifying a plastic material using the burn test method.
Warning: Go to an open area with fresh air and ensure that you observe all safety requirements, then ensure that you have a
large enough sample of the material you want to burn test to avoid any potential burn hazard. Always make sure that there
is nothing on the ground under where you are burn testing the plastic to reduce the risk of a fire in or around your
work area. Avoid breathing in any smoke produced by the burn/flame test. Ensure all safety PPE is used during this
test method.
Use either the K15350 Kincrome gas soldering iron (not supplied) or a cigarette lighter (NOT matches), ignite your plastic
material sample & observe the reaction.
You need to pay attention as you are looking to identify flame or no flame, colour of flame, carbon above the flame, etc.
Take note of the odour the burning plastic omits as this also can assist you in identifying the material type,
but be very careful of
doing so as the fumes omitted from burning plastics can be toxic.
Then once you have extinguished the flame, try to identify the plastic material type by utilizing the following information,
• Plastics that ignite quite quickly and ‘drip molten flaming plastic’ are usually-
• Low-density polyethylene (PE-LD).
• Linear low-density polyethylene 4 (PE-LLD).
• High-density polyethylene 2 (PE-HD).
• Polypropylene 5 (PP).
• PET plastic generally ignites easily , however normally produced bubbles while melting.
• PVC (3) & ABS (7) will generally ignite but will show signs of softening/drooping without dripping molten plastic.
Flame/Smell Test
• PE-LD, PE-LLD (4), PE-HD (2) & Nylon plastics should produce a Blue flame/Yellow tip, smokes, and smells like
candle (paraffin).
• PP (5) should produce a Blue flame/Yellow flame, drips, and smells diesel fuel/paraffin like.
• PVC (3) should produce a Yellow flame/Green tip at initial contact with the flame and small like chlorine.
Warning: This smoke is very toxic so extreme caution is needed around this smoke.
• PET or PC (7) should generally omit a full Yellow flame / full body black smoke and smell like burnt sugar.
• PS (6) or ABS (7) should generate a full Yellow flame, soot like smoke and smell like styrene/burning
rubber. (soot like smoke normally can leave black residue on any material placed above the smoke during testing)
Feel Test
This test though not very accurate, can help to give you an insight in to what plastic you might be working with.
Some plastics like ABS or PVC are harder and some are softer like PE and PP. Usually PP & PE can be marked with
your thumb nail whereas ABS & PVC cannot.