TSB
screen printing => Equipment => Topic started by: dirkdiggler on January 08, 2019, 10:54:55 AM
-
Does anyone have this problem with the big blobs of emulsion after the scrape like in this pic? Thanks in advance for your help.
-
NO, But try a little less emulsion in the trays. Also may have to do with screen tension being a little looser in the corners.
-
NO, But try a little less emulsion in the trays. Also may have to do with screen tension being a little looser in the corners.
Tried all that, still no luck!
-
Try upping the time on the Scrape Delay. 3 seconds works for us. If that doesn't help then you might have a tension issue like Rick said or another variable.
-
film it with a video camera and review in slow motion. It will give you some idea of what's going on.
pierre
-
Also important to note that all emulsions have different rheolgies and viscosities. Second, there are sharp/rounded options on the trays. Also speed can fall into play here. And number of coats/passes. Surely loose corners may be an issue as Rick mentioned. Tension meter will point that out. Check the corners vs center. Settings on the machine may be adjusted however, I would advise to check with M&R on that. This is not an uncommon issue, regardless of machine. Many keep scrape cards as a bandaid but the that sort of defeats the process of being automated. As I stand on my soap box....do the reseach and excersize one variable at a time. It normally takes time but the pay off is well worth it!
-
M&R are trying to duplicate it in their showroom, I know others have had this issue, just cant find the fix. It will come though.