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I don't know either. I've always used normal patches, but sometimes they are too flexible so they get pushed through the hole and re-puncture. Maybe TL patches are stiffer.
Some people cut a bit off an old tyre, which should be stiff enough.But if you are patching, you need a track pump or compressor to reinflate. CO2 might work, but you only get 1 shot per canister you are carrying.
The other thing to think about is Dyno Plugs. They are a bit expensive but meant to be better than the standard anchovy/worms
http://www.dynaplug.com/bike.html
Not sure exactly, but the tube patches I bought en route didn't stick - should have tried some gorilla tape but didn't think of that