bag-face not glossy as tool face

Talk Composites - The Forum for Advanced Composites

Back

bag-face not glossy as tool face

Author	Message
MSm	M MSm posted 7 Years Ago HOT Topic Details
M Group: Forum Members Posts: 2, Visits: 7	Hi, i am making several CFRP plate using prepreg UD, vacuum bagging for testing according to standard for research purposes. Until now, i do not get clear solution to get the bag-face surface similar with tool face (glossy). I am using non-perforated release film, breather and bag after the laminate---oven cured with vacuum pressure. Any idea how to solve this? sanding and polishing? or any missing step? Please help me to achieve quality specimens.
	Reply Like 2
Warren (Staff)	Warren (Staff) posted 7 Years Ago HOT Post Details
Group: Administrators Posts: 2.5K, Visits: 7.9K	Using an unperforated release film will help the back of the part be gloss in finish as the film is gloss in finish. However without matched tooling, it will never be as smooth as the mould facing side. Warren Penalver Easy Composites / Carbon Mods - Technical Support Assistant
	Reply Like 2
scottracing	scottracing posted 7 Years Ago HOT Post Details
Group: Forum Members Posts: 460, Visits: 5.2K	you need to use a caul plate with a good release film like tygaflor if you are hoping to achieve gloss on both faces, or a closed tool as warren suggests.
	Reply Like 2
MSm	M MSm posted 7 Years Ago HOT Post Details
M Group: Forum Members Posts: 2, Visits: 7	+x scottracing - 9/22/2017 8:57:26 PM you need to use a caul plate with a good release film like tygaflor if you are hoping to achieve gloss on both faces, or a closed tool as warren suggests. Hi..thanks for the idea..i am preparing an Aluminium caul plate for this reason..just to clarify the arrangemnt...composite laminate-caul plate-perforated release film-breather-vacuum bag + breathable dam to cover all sides of compo plate...is that ok?
	Reply Like 2
scottracing	scottracing posted 7 Years Ago HOT Post Details
Group: Forum Members Posts: 460, Visits: 5.2K	+x MSm - 9/23/2017 3:39:52 PM +x scottracing - 9/22/2017 8:57:26 PM you need to use a caul plate with a good release film like tygaflor if you are hoping to achieve gloss on both faces, or a closed tool as warren suggests. Hi..thanks for the idea..i am preparing an Aluminium caul plate for this reason..just to clarify the arrangemnt...composite laminate-caul plate-perforated release film-breather-vacuum bag + breathable dam to cover all sides of compo plate...is that ok? Why are you using perf release?
	Reply Like 2