Resin Infusion Problems - dry patches


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Balakrishnan Seeni
Balakrishnan Seeni
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Dear sir,

I did resin infusion process for 175 x 150 mm flat plate in glass and carbon fabric. But I faced huge problem. Here i attached the photos. Kindly help me to solve this problem.

I used Vacuum pump, specification is  630 mm of Hg (or )  24 in Hg. and its dry vacuum pump single stage. Is sufficient to do the infusion process?

Some times plate get good finishing. Some times problem will come (See the photos)
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Lester Populaire
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To me this does not look like a pump/vacuum issue, but rather something that can be solved with the right infusion setup. Can you provide a picture of the opposite side of the part with the flow media?

It might already be enough to just heat the vacuum bag with a heat gun along the sides, so it can conform better to the edge of the fabric to avoid race tracking.

cheers, Lester
Balakrishnan Seeni
Balakrishnan Seeni
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Lester Populaire - 2/8/2019 11:34:43 AM
To me this does not look like a pump/vacuum issue, but rather something that can be solved with the right infusion setup. Can you provide a picture of the opposite side of the part with the flow media?

It might already be enough to just heat the vacuum bag with a heat gun along the sides, so it can conform better to the edge of the fabric to avoid race tracking.

cheers, Lester

Thank You for valuable reply Lester..  here i attached the opposite side of the part. This side is fully impregnated.  help me to solve the above problem 

Lester Populaire
L
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Balakrishnan Seeni - 3/3/2019 2:00:02 PM
Lester Populaire - 2/8/2019 11:34:43 AM
To me this does not look like a pump/vacuum issue, but rather something that can be solved with the right infusion setup. Can you provide a picture of the opposite side of the part with the flow media?

It might already be enough to just heat the vacuum bag with a heat gun along the sides, so it can conform better to the edge of the fabric to avoid race tracking.

cheers, Lester

Thank You for valuable reply Lester..  here i attached the opposite side of the part. This side is fully impregnated.  help me to solve the above problem 

I meant a picture of the bagged part with the flow media and vacuum line. A sketch would do if you don't have a picture...

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