Troubleshooting procedures for foamable resins are much the same as for other thermoplastics. This table is presented as a quick reference guide. Only one solution to a given problem should be tried at any one time; never attempt to combine possible remedies.
This information is intended to be used only as a guideline for designers and processors of modified thermoplastics for injection molding. Because injection mold design and processing is complex, a set solution will not solve all problems. Observation on a “trial and error” basis may be required to achieve desired results.