TSB

screen printing => Ink and Chemicals => Topic started by: ScreenPrinter123 on December 15, 2013, 10:12:04 PM

Title: Thickening ink
Post by: ScreenPrinter123 on December 15, 2013, 10:12:04 PM

Got some really thin/runny plastisol. Aside from corn starch and flour, what are you guys using to thicken your inks that are too thin to make it more like a maxopake ink?

Title: Re: Thickening ink
Post by: screenxpress on December 15, 2013, 10:34:42 PM

I have found Union Black to be more runny than I like so I mix it 50/50 with QCM Black which I find too thick on its own.  Result is a medium body Black.  Can you do something like that or is color matching an issue?

Title: Re: Thickening ink
Post by: Frog on December 15, 2013, 10:49:40 PM

Short answer, most ink manufacturers sell a thickener..
For instance

Rutland Paste Thickener M 00333

Union Paste Thickener PLUS-9114

Title: Re: Thickening ink
Post by: ScreenPrinter123 on December 15, 2013, 11:02:47 PM

Cool. Thanks frog. Can't dc the job and the lines throughout the print are wayyyy to thin to do an under base of white for it to look good, so pfp of the same ink it must be. But I need it to have more body. Thanks.

Title: Re: Thickening ink
Post by: ZooCity on December 16, 2013, 01:12:58 AM

Cabosil otherwise known as "fumed silica".  There are other amendments in ink that make it thick such as with an HO plastisol but adding some cabosil will help if it's just too runny.

Title: Re: Thickening ink
Post by: noortrd on December 16, 2013, 11:53:13 AM

Yes cabosil or aerosil powder. But it makes ink on matt side.