halima 1 Posted January 13, 2020 Hi everybody, I have color marks on the back side of fabric after press. Most of the time with blue color. But with yellow too. Kind of product: soccer jersey , towels Printer: Epson SCF7200 720x720 2 pass Ultrachrome DS epson ink. Press 200°C 40 seconds press time 3bars pressure Underlay protection paper: i use used sublimation paper or craft paper I try to increase and decrease pressure but with no result. Increase and decrease pressing time. To avoid this problem I have to change underlay protection paper every 3pcs. But i'm loosing a lot time. I have 2 press machine of 2 different brand. The problem is the same on the both machine. Somebody can help me to solve this problem ? I 'm out of idea. thx a lot. Share this post Link to post Share on other sites
Dakotagrafx 7,297 Posted January 13, 2020 Are you using a protective paper on the platen and disposing after every press? If not the ink as it is in gas form attaches to your platen and regasses on subsequent presses Share this post Link to post Share on other sites
halima 1 Posted January 13, 2020 Hi Dakotagrafx, Of course I use protective paper on the platen. When protective paper is new everything good. But after 3 press marks (like ink gasses) begins to appear on the backside of the fabric. As protective paper I use sublimation paper or craft paper. Craft paper is better I have to change it after 5 press. But when you have 2500pcs towel production it takes a lot of protective paper and a lot of time to cut it and replace it.... If I find a solution to avoid this marks or to only change protective paper every 50 press it would be better. What kind of protective paper shall I take? Thx Share this post Link to post Share on other sites
Dakotagrafx 7,297 Posted January 13, 2020 Not changing after every press you will get this, I use butcher paper on an old school butcher paper dispenser so very easy to have fresh every time. Nature of sublimation ink, you are just collecting the ink and redistributing it where you don’t want it by reusing the protective paper . Sblimationink goes from solid to gas and will find its way on other items and when reheated it turns to gas again, the reason it is coming off your reused paper on 3 rd press with same sheet Share this post Link to post Share on other sites
halima 1 Posted January 14, 2020 Hi Dakotagrafx, Thank you for your tips. Cause of you i have some new idea to test. I let you know. Thx. 1 Share this post Link to post Share on other sites