Author Topic: flash cure and flash heater  (Read 1021 times)

Offline noortrd

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flash cure and flash heater
« on: August 30, 2013, 12:22:48 PM »
Is there any difference between flash cure and flash heater.? Its fan is necessary to cure?


Offline Frog

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Re: flash cure and flash heater
« Reply #1 on: August 30, 2013, 12:26:02 PM »
Flash Dryer, Flash Heater, Flash Cure Unit, Flash Cure(er)

"Flash Cure" does not really denote the unit itself, but rather what the flash dryer is designed to do, a partial cure to the gel stage.

Fans are nice but not necessary
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Offline abchung

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Re: flash cure and flash heater
« Reply #2 on: August 30, 2013, 12:32:21 PM »
Fan is not necessary for plastisol.
It is great for water based inks. (Non-discharge)

Offline noortrd

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Re: flash cure and flash heater
« Reply #3 on: August 30, 2013, 12:35:44 PM »
Our enduser have heater without fan but in print flash print of water base the print still sticky and wet and not able to print other color.

Offline screenprintguy

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Re: flash cure and flash heater
« Reply #4 on: August 30, 2013, 03:56:21 PM »
you shouldn't need to flash your water based colors, unless you are trying to put a second coat for more opacity. we do up to  8 color wet on wet water based printing all the time, no flash unit at all. If you are trying to do an additional coat for higher opacity, you need to either flash longer, for water based ink, you are going to really need more time flashing than plastisol to evaporate the water out of the image, which can be tough on lighter shirts as the longer you flash, the closer to scorching you come. If your colors aren't opaque enough, you need to deepen the pigment load by a couple maybe 4-5% more. Or use a lower mesh count to get more ink into the shirt fabric in one pass. Depending on what type of flash you have, and how much heat it puts out, you could be there all day trying to flash water based prints and the flash is not even necessary as the inks are designed for wet on wet printing.
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