Can I glue polyurethane products with weldbond?

I am trying to bond polyurethane plastic sheet to itself and to polyurethane foam. I was told by home depot staff to use weldbond. I would like a second opinion because the first glue they recommended failed miserably and I don’t want to repeat my work for a third time if this is again the wrong glue.

I checked the website and while it specifically excludes polyethylene, unbacked vinyl, PVC, Teflon, polypropylene and vinyl to vinyl; it does not specifically exclude polyurethane. It also does not specifically include it either.

It does say that it will not harm foams and can be used on some plastics.

I appreciate any help people might be able to offer. Thanks in advance and I look forward to reading your responses.
John it is to create an air mattress and must hold it’s seal. It is bonding sheet to sheet and foam to sheet all polyurethane. Bigger plastic would just mean I need trim the plastic. Don’t worry about strength because it will be re-enforced with nylon. It will be exposed to humidity and moisture (from blowing it up) but isn’t expected to be a life raft or anything silly like that.

Most glues have a solvent in them,
look for a polyurethane spray, use it to bond them together,