"The Natural Philosopher" wrote in message
...
On 18/06/13 16:26, wrote:
I'm trying to find a 'proper' glue that will 'weld' flexible PVC
sheeting and I'm not having much success.


Of course the best way is a pair of hot wheels to melt the plstic and roll
a hot seam well along the length.

If you can afford a few grand for teh kit..:-)

Back in the early nineties i was YTS at a commercial garage, and it was my
job to be inside the curtain siders leaning on the board against the patch
that was being 'welded' on to close up the knife slits all curtain sider
trailers got when parked in certain laybys in the area,

The patch was cut from an old curtain taken off a wrecked trailer (just
thick pvc, always blue back then for some reason) so no heat activated glue
or owt (tho i believe the 'official' repair kits did have the heat activated
glued patches)
Anyway, they were heat welded using just a hot air gun and a steel roller
wheel, the roller was nothing special, just a wooden handle and metal wheel
with shallow ridges in it, but had to be pressed very hard against the
backing board to ensure a good joint, and the 'skill' was getting the
plastic to the right temp, which was not far below the point it began to
bubble then turn black and crispy.

But once repaired like this, the splits never came open again, naturally
that is, often we placed patches on patches on patches untill it became too
bulky and the curtain get jammed in the end winder when rolling it up.