Better releasing peel ply?

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Better releasing peel ply?

Author	Message
The Mould Destroyer	The Mould Destroyer posted 3 Years Ago HOT Topic Details
Group: Forum Members Posts: 21, Visits: 332	I'm dying with my peel ply, every time its a battle Are there any advancement in this area? any better releasing peel ply? Alternatively - any other way to create a good bonding surface?
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Hanaldo	Hanaldo posted 3 Years Ago HOT Post Details
Group: Forum Members Posts: 2.5K, Visits: 28K	Well what peel ply are you using? PA66 is the best performance wise, but also quite expensive. I won't use anything else though, cheaper stuff ends up costing more in labour to remove it. You can also get things like teflon coated fibreglass, or silicone coated peel ply which are supposed to be easier to remove. I can vouch that the teflon coated fibreglass is much easier, but I'm dubious about the silicone coated peel ply, I still found that harder to remove than PA66. Also keep in mind that any coated materials are going to effect your secondary bonding, so I absolutely wouldn't use anything but PA66 if you are using it to create a bonding surface. Otherwise you can also use a perforated release film, either in conjunction with a peel ply or on its own without the peel ply. If used with peel ply, it should make it easier to remove the infusion mesh first, and then you can remove the peel ply easier. Or, if used on its own then you would just abrade the surface before bonding to it.
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The Mould Destroyer	The Mould Destroyer posted 3 Years Ago Post Details
Group: Forum Members Posts: 21, Visits: 332	+x Hanaldo - 6/1/2021 5:56:34 AM Well what peel ply are you using? PA66 is the best performance wise, but also quite expensive. I won't use anything else though, cheaper stuff ends up costing more in labour to remove it. You can also get things like teflon coated fibreglass, or silicone coated peel ply which are supposed to be easier to remove. I can vouch that the teflon coated fibreglass is much easier, but I'm dubious about the silicone coated peel ply, I still found that harder to remove than PA66. Also keep in mind that any coated materials are going to effect your secondary bonding, so I absolutely wouldn't use anything but PA66 if you are using it to create a bonding surface. Otherwise you can also use a perforated release film, either in conjunction with a peel ply or on its own without the peel ply. If used with peel ply, it should make it easier to remove the infusion mesh first, and then you can remove the peel ply easier. Or, if used on its own then you would just abrade the surface before bonding to it. Thanks! I use the PP230 Aero-Grade Nylon 66 Peel Ply (Red Tracer) Im wondering if there is such a thing - reusable peel ply? I can attach to a caul and use it to press on the mould, pulling the caul will be much easier
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Warren (Staff)	Warren (Staff) posted 3 Years Ago HOT Post Details
Group: Administrators Posts: 2.5K, Visits: 7.9K	Cut it into strips on the edges to help ripping it off. I am not aware of any "easier" peel ply other than silicone coated ones which with experience are still not easy to remove and cause the secondary bonding issues Hanaldo mentions. As peel ply gets saturated with resin, it is not reusable. Warren Penalver Easy Composites / Carbon Mods - Technical Support Assistant
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Beau Broderick	Beau Broderick posted 3 Years Ago HOT Post Details
Group: Forum Members Posts: 2, Visits: 17	+x The Mould Destroyer - 5/30/2021 10:10:42 PM I'm dying with my peel ply, every time its a battle Are there any advancement in this area? any better releasing peel ply? Alternatively - any other way to create a good bonding surface? I've found that Precision Fabrics Code 60001 polyester peel ply to be pretty easy for removal. If the bond lines are super critical they also offer some non-silicone based "Super Release" products. I use Airtechs porous release ease TFP and nylon supelease blue (SRB) peel plies for surface finish only. The SRB is coated with silicone and will transfer. No issue with painting, but I'd never attempt to use it for bonding without an expectation for failure. Aside from using peel ply, mechanical preparation is the only other way I know of. Of our suppliers uses a grit blasting process for preparation, but it requires thorough rinsing and drying before bonding can occur. It is somewhat inconsistent and messy. The strips method works too, but the best thing you can do is pull up as perpendicular to the surface as possible, otherwise the support will tear, and then you know the rest...
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Fasta	Fasta posted 3 Years Ago Post Details
Group: Forum Members Posts: 468, Visits: 3.5K	There are other materials I use which are like a polyester or nylon fabric available from haberdashery retailers, it's the kind of stuff you would see as lining in clothing and jackets etc. Really cheap and much easier to peel off. Often it can also depend on what's on top of your peel ply too, infusion mesh can also make it more difficult than it might be without. That's where this cheaper one can also be a problem as it is not strong enough to come off with your infusion stack and it can tear into smaller pieces which may in turn also be a b#tch to get off with the time it may take. But maybe worth a try. I use both types of peel ply depending on the job, on a hand laid epoxy job without infusion this cheap stuff just peels up easy. Fastacraft Facebook page
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