Infusion and envelope bagging

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Infusion and envelope bagging

Author	Message
ajb100	ajb100 posted 12 Years Ago HOT Topic Details
Group: Forum Members Posts: 346, Visits: 4.4K	Hi guys, I've got a project at the moment were the mould has been supplied by the customer and wants a carbon part making. The problem is the customer is used to wet lay fibreglass and I don't think he fully appreciated the ins and outs of vac infusion so has drilled a few holes and cutout in the mould. Now I've had one go already having sealed the holes the best I can but it's just not worked properly. I know someone on here once said that they infused parts by envelope bagging the whole mould and infusing. Now this would solve all my problems but can't help but worry the resin is going to go around the back of the mould when it reaches the edge of the stack? Has anyone got any experience envelope bagging and infusing and did you have to do anything special? Thanks in advance
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Matthieu Libeert	Matthieu Libeert posted 12 Years Ago HOT Post Details
Group: Forum Members Posts: 955, Visits: 3.4K	I always envelope the entire mould into a bag, gives me the best results and saves me a lot of time. when you envelope the bag you don't have to put tackytape around the flange where you have a lot of places where tiny airleaks can form. How I work is; I infuse from center with a spiral tube around the entire flange, this gives a good and contant vacuum around the entire part. you can see one of my video's if interested on how the setup is done: Matthieu Libeert Founder MAT2 Composites X Sports website: www.mat2composites.com
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andygtt	andygtt posted 12 Years Ago HOT Post Details
Group: Forum Members Posts: 157, Visits: 1.2K	only a very small amount of resin will find its way around the back of teh mould because there are not voids or material for it to flow into and the bag is tight against the mould itself. I always envelope bag my large parts.
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ajb100	ajb100 posted 12 Years Ago HOT Post Details
Group: Forum Members Posts: 346, Visits: 4.4K	Thanks for the confirmation, managed to get it to work in the end, turns out his MEKP wasn't happy with my resin causing the gel coat to wrinkle The issue I'd have with running spiral around the outside is the resin hits places up to 30 min before its finished so would only want to try it with mti hose but haven't got the budget for that just yet
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