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Brown spot defect
Hi all,
This week we have an issue with Nylon6,6 GF30 injection a Brown spot appeared in the extremity of the part. First, we clean up the mold vents thinking that's a problem in gas evacuation but it didn't work secondly we verify the clamping force but it didn't work also.
Any suggestions would be appreciated.
Thanks.
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Re: Brown spot defect
Pictures of the defect will definitely help.
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1 Attachment(s)
Re: Brown spot defect
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Re: Brown spot defect
Very difficult to see. But it appears as gas trapped or material degradation.
I'd recommend slowly the injection speed. If that doesn't work, perhaps lowering the barrel temps.
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Re: Brown spot defect
thank you, I take your advice into consideration and I will give you the feedback.
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Re: Brown spot defect
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Re: Brown spot defect
yes, I fix it. as you said I worked on the injection speed in the level of filling this area of the part and the results were Good.
Thank you very much for your support.