Application
Mould release
Release without a transfer film
The situation
Compression, RTM and vacuum moulds, rollers, dies and fixtures where the moulding sticks, or where a release agent migrates into the part and has to be removed before the next process.
What fails today
- Silicone release sprays transfer to the part and have to be removed before painting.
- A release film that is too soft smears and builds up on the mould.
- Releases that work cold fail once the tool runs hot.
- Every reapplication stops the press.
Grades for this duty
SF-180VP
One bottle, four cure routes, 80–90 % ceramic yield
SF-NF4401
13–15 % fluorine, the entry grade for release and repellency
SF-NF4402
28–30 % fluorine in the trifluoropropyl chain
SF-NF4403
22–25 % fluorine, already at 105–110°
SF-NF4404
Long-chain fluorinated, 38–40 % fluorine
SF-NF4405
The highest fluorine load we make: 55–60 %
SF-NF4406
48–50 % fluorine, long-chain chemistry
How to apply it
Clean the tool to bare metal or bare resin before the first coat; release films do not bond through residue.
Thin and even: a thick film transfers to the part.
Cure fully before the first moulding cycle, then run a few scrap parts.
Top up rather than recoat where the process allows it.
How to qualify it
- Release force over repeated cycles on the real moulding compound.
- Surface energy by contact angle to ASTM D7334.
- Build-up on the mould after a production run, inspected rather than assumed.
- Film wear at the parting line, which is where a release coating fails first.
Bring your substrate and your target; we quote a grade and a cure schedule against it.
Next step