Hi,

On one of products i have problem that not in each shot is same material cushion. Anyhow i have like 100 shots OK, than few with less or more cushion than should be. On this parts i have shout thru material (is overmold), or not fulfilled part. And that again all is OK for some time.
Now i need to fix this problem, but i cant relay find solution.
I check injection pressure, switch over volume, switch over pressure, cycle, dosage and injection time, and all values are within tolerances.
First what i looked was screw coupling but since i dont have problems on other products (different material) i excluded that as problem, also we use only virgin material.
Wet material test didn't give us wanted result, so im wondering what else i could try to prevent this from happening.

Best regards,
Nemanja.