On 03/19/2018 08:22 AM, Clare Snyder wrote:
It will almost certainly be some sort of polyetheline or
poly-urethane -there is a product made for repairing the urethane
bumpers - a 2 part epoxy-type p[roduct - one I have used is Dynatron
#660 dynaweld. Works reasonably well - but NOT cheap at $81 US from
Napa.

Polyethylene and polypropylene both have a waxy feel and are very
difficult to bond. I've never tried it but supposedly the Loctite
product does work.

http://www.loctiteproducts.com/p/sg_...ing-System.htm

The usual technique has been plastic welding. 'White' Gorilla Glue, not
the woodworking type, is polyurethane and should work. You need to clamp
the backing material tightly since the glue foams as it sets.