Use a low cure white and add low cure additive to additional colors. DO NOT add more low cure additive to an already low cure ink, as it will not do what you want. We usually add about 5% by weight. The curing temp gets reduced from 320 to about 275 with plastisol. You'll burn through (literally) a ton of them your first time, but once you figure it out, they are a piece of cake.
non-woven bags
Hello all. I am trying to print on some non-woven polypropylene drawstring sports Bags. Are there any special precautions I need to worry about? Any special temperature? Any special belt speed? Any special ink or additives?i
Any tips and/or tricks are greatly appreciated.
Thanks so much.
Any tips and/or tricks are greatly appreciated.
Thanks so much.
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My first try resulted in burned bags 
I had read another trick to add a nylon catalyst to the ink, run it at a low temp, and air dry. Have you heard anything similar?
I had read another trick to add a nylon catalyst to the ink, run it at a low temp, and air dry. Have you heard anything similar?
I printed these non woven bags on an M&R Sportsman auto a few years ago.
I needed to get creative with the process as the bags can easily and quickly burn under normal ink flashing/curing temperatures so I made a flat board with a hole larger than the print area but smaller than the shirt board, this was covered with tin foil and positioned under the flash unit. This allowed the heat (flash) to be applied only to the print area and not to the substrate hanging off the edge of the shirt board which is prone to burning/melting. This method allowed me to use sufficient heat when flashing between colours without risk of burning the bag. It is important to have good tack on the shirt boards as any lifting of the bag can result in burning.
Also, I put a clear ink under the entire image down first, this gave a nicer surface to lay the colours on to. The yellow and blue were under-based with white to make them pop. Nylobond was added to all inks therefore allowing for very low heat curing through the tunnel dryer. They turned out great!
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I needed to get creative with the process as the bags can easily and quickly burn under normal ink flashing/curing temperatures so I made a flat board with a hole larger than the print area but smaller than the shirt board, this was covered with tin foil and positioned under the flash unit. This allowed the heat (flash) to be applied only to the print area and not to the substrate hanging off the edge of the shirt board which is prone to burning/melting. This method allowed me to use sufficient heat when flashing between colours without risk of burning the bag. It is important to have good tack on the shirt boards as any lifting of the bag can result in burning.
Also, I put a clear ink under the entire image down first, this gave a nicer surface to lay the colours on to. The yellow and blue were under-based with white to make them pop. Nylobond was added to all inks therefore allowing for very low heat curing through the tunnel dryer. They turned out great!
1 - 11 of 11 Posts
