Rigidizing thermoformed ABS?

[LenHodder]

I'm searching for a method of rigidizing a thermoformed ABS part. The thermoforming process thins the plastic quite a bit - to about 0.040" in places (started at 0.118"). The walls of this product, in selected locations, need to be supported. We're currently using a polyurethane foam, but the cost is prohibitive - both the material and labor. This is a very cost sensitive application, so a low-cost solution is required.

I'm wondering if there is a spray-on coating that would adhere well to ABS that would add some degree of rigidity. It can't be overly exothermic as it cures, as that would distort the plastic. Any ideas?

Thanks.
Len

 

[bvanhiel]

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