Infusion Molding with Reusable Silicone Vacuum Bag
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- Опубликовано: 30 сен 2024
- Reusable Vacuum Bag (RVB) silicone membranes increase productivity and improve the quality in composite molding. 🚀 ▶️ goo.gl/ycS2AH
Fiber reinforced polymer (FRP) composites are increasingly being used to make molded parts for a wide variety of industries: automotive (including trucks and off-road vehicles), renewable energy (components such as wind-power propellers), aerospace, marine construction, architectural structures, etc. These composites combine excellent mechanical properties with a low density, and feature high resistance to water, chemical and environmental pressure.
Traditionally, these materials were composed by a fiber like glass, carbon, aramid fibers as well as natural fibers or hybrid materials and other specialty combinations, and by resins like epoxies, unsaturated polyesters, DCPD polyesters, vinyl esters, phenolics, polyurethane and hybrids.
One of the methods to produce FRP composites and hybrid materials is the infusion molding process with the use of disposable plastic bag sheets that are manually placed and assembled by highly skilled operators. This process is extremely time consuming and generates a great deal of waste since every mold requires a change of bagging. In recent years, manufacturers focused their attention on reusable vacuum bag (RVB) membranes that increase productivity, reduce costs (in particular for larger batches) and improve the quality and consistency of parts produced. This process also contributes to better industrial safety and workplace cleanliness, while reducing the use of consumables and thus lowering waste.
However, because introducing RVBs into a production process can require capital investments and process changes, it is essential to choose the right technologies and products from the start. Depending on these choices and the composites being processed, RVBs can be reused from 20 to 300 times.
Learn more about silicones for infusion molding : goo.gl/ycS2AH
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can I just use some of those silicone tubes one buys in the shops? like for bathrooms and stuff`?
Making such a messy job look so clean. Superb attention to detail. I bet even that guys work car is clean every day. Impressive.
Hello, Is this product obtainable in the USA? Who are the sellers? Can I buy retail, online? I am only a hobbyist but this product would certainly work for me.
Dear, you can contact our experts directly here: goo.gl/vvdHM2
If it's for your personal use, they will probably connect you to our distribution partners in the USA!
Can you also brush on the silicone to make the bag instead of the special spray machine?
Yes, absolutely! Our slow curing version (RTV3720 SC : goo.gl/QNWDqA) Is perfect for brushing! You can contact our experts for more information here: goo.gl/vvdHM2
@@ElkemASA - That's really good to know, 'cause I have a one off project that may turn into something more, and I want to be prepared for that possibility.
Plus, I just hate the idea of wasting so much time fiddling with the bags.
Those RVB's are just such an elegant solution, one that occurred to me (lucky for me, they already exist).
I'm aware of another company that has a spray gun with a price tag that makes no sense to me.
I assume the spray gun I saw in this video would similarly be out of my price range, too bad 'cause it's a better solution.
However, for the small project I have in mind, a brushable material will fit the bill.
Unfortunately, the link to RTV3720 SC didn't work, but I found it through a Google search.
I did a search for it on your website, but it wasn't found; the Google link got me there.
@@tsrjs What great news! Would you like to get in touch with one of our experts or distribution partners to exchange on your project and get some silicone advice?
@@ElkemASA Thanks for your reply, sorry I missed it.
I don't RUclips very well.
Just now realized I had some comments waiting.
Regarding the RVB's, looks like for my one-off project, that's a little bit too ambitious.
I've got about a dozen parts to infuse, and the RVB, even the brush-on would make my project prohibitively expensive.
Since the majority of the parts are fairly flat, I believe standard vacuum bag material will suffice.
For those parts that have more curvature, I believe the Stretchlon 200 will meet my needs.
Again thanks for your interest.
After rewatching this a year later I'd be very curious why you don't "need" a flow medium? In all vacuum infusion videos with disposable vacuum film you need to use a flow medium above a release film.
Is this simply a matter of speed? Or is the geometry well suited here? Or is the silicone stiff enough to not get sucked into every single fiber and seal it off?
Thanks again for the video!
Dear Dejay, this is the starting point of an interesting discussion! If you'd like to dig deeper on technical aspects of the process, I'd suggest you to reach our tech team via our website contact form: bit.ly/Elkem-Contact
a.
By flow medium do you mean 'breather cloth'? ... It does appear to flow very well although it's not real-time video so it's difficult to know exactly.
@@daltanionwaves I think breather cloth is for vacuum bagging only.
They actually do use a flow medium here, the black netting like material but only at the bottom.
I also learned that if you use scored and perforated foam core that works as a flow medium (and increases bonding to foam)
@@dejayrezme8617 Part of the answer is that, as with many silicone bag infusions, they use glass mat instead of cloth of multiaxials, which is much more permeable to resin.