Mending polypropylene?

cymru

Seaman
Joined
Sep 19, 2008
Messages
55
Don't know if this is the right forum, but anyway.....

Anyone know of a good way to repair a piece made of PP? As it is a type of plastic which doesn't react to solvents I suppose that melting it may be the only way to go....
 

drrpm

Senior Chief Petty Officer
Joined
Oct 24, 2008
Messages
707
Re: Mending polypropylene?

Polyethylene is weldable with a heat gun, scrap PE and patience. It is frequently done to repair damaged whitewater kayaks and the results can be quite good if done by someone with skill and patience. Patience is key because its easy to go too fast and melt a hole in the plastic. Polypropylene can also be welded. If the broken piece is important you'll want someone with experience to fix it.
 

pmillar

Petty Officer 1st Class
Joined
Sep 23, 2009
Messages
298
Re: Mending polypropylene?

If you do it yourself try not to breath any fumes.
 

Fishing Dude too

Lieutenant Junior Grade
Joined
May 13, 2011
Messages
1,035
Re: Mending polypropylene?

Grind into small peices, heat in extruder to 329 f, mixes with virgin material, form new peice. Oh wait that is how they made it the first time.
 

BobList

Petty Officer 2nd Class
Joined
May 20, 2010
Messages
135
Re: Mending polypropylene?

I use a regular soldering gun, and use a razor blade to slice a piece of non-essential plastic off the original part, and use that as a "welding rod".. slow is the key...

Bob
 
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