Flash tape and pre-preg

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Flash tape and pre-preg

Author	Message
Damien	Damien posted 3 Years Ago HOT Topic Details
Group: Forum Members Posts: 32, Visits: 132	Hi, I have used Flash tape as a resin barrier at the junction between the 2 pieces of a 2-part mould for prepreg (mould made using EC high temp gelcoat and high temp putty, prepreg is EC Xpreg). But to my surprise, when demoulding the part, the tape was really stuck on the prepreg. Impossible to easily remove. Only with a very thin blade...and sand paper. I actually saw here that someone else experienced this. Any suggestion? Should I simply change tape ? Shall I use PTFE tape instead ? Thanks !
	Reply Like 3
f1rob	f1rob posted 3 Years Ago HOT Post Details
Group: Forum Members Posts: 237, Visits: 4.8K	+x Damien - 1/1/2021 7:02:51 PM Hi, I have used Flash tape as a resin barrier at the junction between the 2 pieces of a 2-part mould for prepreg (mould made using EC high temp gelcoat and high temp putty, prepreg is EC Xpreg). But to my surprise, when demoulding the part, the tape was really stuck on the prepreg. Impossible to easily remove. Only with a very thin blade...and sand paper. I actually saw here that someone else experienced this. Any suggestion? Should I simply change tape ? Shall I use PTFE tape instead ? Thanks ! Use ptfe tape
	Reply Like 3
Fasta	Fasta posted 3 Years Ago HOT Post Details
Group: Forum Members Posts: 468, Visits: 3.5K	As Rob said, use PTFE (teflon tapes) Flash tape with work fine only when released from the tacky side, so you can tape onto the back of a pre preg laminate to hold bagging films in place or other reasons and that will peel off well. Using the flash tape on a mould surface as you want will only work with wet layup method, not for pre pregs. Fastacraft Facebook page
	Reply Like 3
Lester Populaire	L Lester Populaire posted 3 Years Ago HOT Post Details
L Group: Forum Members Posts: 311, Visits: 13K	+x Damien - 1/1/2021 7:02:51 PM Hi, I have used Flash tape as a resin barrier at the junction between the 2 pieces of a 2-part mould for prepreg (mould made using EC high temp gelcoat and high temp putty, prepreg is EC Xpreg). But to my surprise, when demoulding the part, the tape was really stuck on the prepreg. Impossible to easily remove. Only with a very thin blade...and sand paper. I actually saw here that someone else experienced this. Any suggestion? Should I simply change tape ? Shall I use PTFE tape instead ? Thanks ! You can also give it a quick wipe with some release agent and it will come off easily.
	Reply Like 5