Knowde Enhanced TDS
Identification & Functionality
- Product Type
- Technologies
- Product Families
- Varnish Gloss Level
At a 60o angle Diamond Sheen showed a specular gloss reading of 75.6 units on a #1 gloss coated sheet, at a standard film weight. If applied at a heavier film weight or as a second pass over printed areas on the sheet, gloss levels will be even higher!
- Varnish Clarity
At a standard film weight Gans Diamond Sheen gloss overprint varnish remains exceptionally clear, with a spectral b* reading of only 1.29 after zeroing out on a #1 gloss coated sheet. Not only is this gloss varnish clearer than most competitor’s overprint varnishes, Diamond Sheen will remain clearer, with less yellowing, for a longer period of time.
- Scuff-Resistance
Diamond Sheen rated a 4 out of 10 on Gans’ internal scale for scuff resistance. This test is performed on a #1 gloss coated sheet 24 hours after printing. Diamond Sheen will resist scuffing well on gloss and matte coated papers. When applied as a second pass over printed areas, scuff protection will be even better.
- Post Processing
Because Diamond Sheen contains highgloss waxes to enhance its appearance and scuff resistance, this varnish is not recommended for printed material requiring subsequent processing such as foil-stamping or imprinting. Diamond Sheen has been developed for the most eye-catching finish achievable with an overprint varnish. When post processing is required, Gans L-8500 wax-free gloss overprint varnish (S-1027) has the finishing friendly characteristics necessary for success.
- Overprint Varnish Tips
1. To reduce the chance of set-off when varnishing in-line, run only as much varnish as is necessary to keep the varnish plate clean of back-trapping. Start with varnish levels low and as the varnish film increases, the back-trapped image on the varnish plate will disappear. At this point, the varnish level is sufficient for the glossiest finish, while minimizing the risk of blocking or setting off in the delivery pile.
2. To finish the varnished sheet to a glassy smooth surface, polish it after it has thoroughly dried. Load the press with the varnished side of the sheet down so it will come in contact with the impression cylinder. Run the sheets back through the press on impression only, using as many units as the press allows for the smoothest, polished finish.
Features & Benefits
- Ready-to-Use Product Features
- Varnish Tack Reading
Diamond Sheen has a tack level of 7 to 8. The above tack readings are taken at 1200 RPM, 1 minute, 90o F, Thwing Albert 101 Inkometer.
Applications & Uses
- Markets
Technical Details & Test Data
- Set Speed
Gans Diamond Sheen overprint varnish rated 75.6 out of 100 on Gans’ internal scale for set speed on a #1 gloss coated sheet. Gans Marlite gloss overprint varnish (S-1300) will set slightly faster for projects where ultrafast set-speed is critical, however, Diamond Sheen will dry glossier and clearer!
- Varnish Stay Open (Skin Time)
Gans Diamond Sheen will not begin to develop a skin in the can or the fountain for at least 15 hours. Extreme ambient temperatures will affect this stay-open period.