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-   -   Tube Patch Plastic (https://www.bikeforums.net/bicycle-mechanics/715098-tube-patch-plastic.html)

vision646 02-21-11 09:49 PM

Tube Patch Plastic
 
I just patched my first tube using one of the patch kits which have the rubber cement. Am I supposed to peel the flimsy plastic backing off the patch after placing it or just leave it on there. When I read the park tools tutorial and the bicycletutor.com tutorial neither one mentioned what to do with it. Thanks.

10 Wheels 02-21-11 09:51 PM

I take it off.

prathmann 02-21-11 10:11 PM

Most of the patches that I've used have a thin slit in that plastic. Gently stretching the tube and patch breaks that slit open and facilitates removal of the plastic from the patch.

cyccommute 02-21-11 11:04 PM


Originally Posted by prathmann (Post 12260736)
Most of the patches that I've used have a thin slit in that plastic. Gently stretching the tube and patch breaks that slit open and facilitates removal of the plastic from the patch.

Fold the patch in half (it also makes you pinch the tube in place...a good thing). Plastic should split in the middle. Peel the plastic from the middle towards the outside of the patch. If you peel the plastic from the outer edge, you can lift the patch if it hasn't set completely.

Or leave it on. It doesn't hurt anything.

Waxbytes 02-22-11 12:13 AM

I just leave it on, I've pulled off a patch trying to get the plastic off so I just let it ride. Does no harm.

waldowales 02-22-11 09:57 AM

Leave it on to keep the patch from sticking to the tire. It'll fall off soon enough, by then the glue will be dry and the patch cured enough it won't stick.

vision646 02-22-11 10:51 AM

Thanks everyone, I guess I'll just leave it on there since it doesn't seem to be a big deal.

Jose Mandez 02-22-11 03:49 PM

Glad you asked that, I, too; traditionally I've always tried to get it off, but doing so runs the risk of pulling the newly placed patch off the tire. I'll probably switch over to leaving it on.

Chombi 02-22-11 05:49 PM

If you installed the patch correctly, you should have no problem taking it off......take it off, it does not have any use inside your tire. It's just to help you handle the patch after you peel off the waxed paper or foil on the other side.

Chombi

noglider 02-22-11 07:34 PM

I heard folklore that said that leaving the plastic on could keep the humidity of the glue under the patch, making it lose its stickum. Is that merely a rumor? I'll be glad to learn I can leave the plastic on!

TromboneAl 02-23-11 03:16 PM

If you leave it on, it will send signals to the mother ship of the flat gods, and you'll get a garage flat.

noglider 02-23-11 03:21 PM

:roflmao: Hey, I said it was rumor. I love it when I'm set straight (told I'm wrong).

cyccommute 02-23-11 05:00 PM


Originally Posted by noglider (Post 12265203)
I heard folklore that said that leaving the plastic on could keep the humidity of the glue under the patch, making it lose its stickum. Is that merely a rumor? I'll be glad to learn I can leave the plastic on!

You don't have to worry about humidity. The glue is hydrophobic, i.e. water hating, and the solvent for the glue should have evaporated before you stuck the patch on. The plastic will crumble and break up in the tire but that doesn't cause any problems other than having small bits of plastic in your tire.

noglider 02-23-11 05:02 PM

Heh. That makes total sense. Thanks. :thumb:


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