trouble shot
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One month ago we made a mold for tray, this part was injected by hot nozzle from bottom, inner surface is made texture, when we tested mold at the first time, the problem came out and never disappear by now. There is a mark where hot nozzle injected. We already tried many ways,such as: changing the thickness of the wall, changing the texture lever on inner surface, adjusting the injection parameter and etc. all the ways failed, they only can make the mark lighter but can not remove. But our customer can not accept their tray with the mark, because this tray is used to high class restaurant.

when you see this two picture,then will clearly understand what I am saying,maybe many people met the same problem.

Can you find some solution,or give some good suggestion to avoid this problem in the future?Please share your experience,Thanks!

Jackie