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Pretreatment timing

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Old December 24th, 2019 Dec 24, 2019 12:41:36 AM -   #1 (permalink)
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Default Pretreatment timing

Hi everyone,

Does anyone know if print production is effected if garments are pretreated beforehand. I had batch treated a bunch of t shirts and when I came to print on a few I noticed some white ink flaking going on. I hypothesised that maybe the t shirt had sealed a bit too much with the pretreatment and hence the inks are sitting on top of the seal rather than being absorbed in? I thought I'd batch treat to save the hassle of having both pretreatment and printer on at the same time and save time doing shutdown maintenance on two Machines. Also I noticed resolute sell pretreated garments.

Any clarity on this would be great.


Thanks

Shimon
 
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Old December 26th, 2019 Dec 26, 2019 3:45:26 AM -   #2 (permalink)
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Default Re: Pretreatment timing

We have pretreated and let them set for a couple of months and had no issues.

The shirt needs to be prepressed for 10-20 seconds before printing to get moisture out and to make sure the fibers lay down.
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Old December 30th, 2019 Dec 30, 2019 3:53:13 PM -   #3 (permalink)
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Default Re: Pretreatment timing

Thanks for the feedback. I guess its the free garments I had given to me that are poor quality. they dont even have a brand name on them.
 
 
Old January 1st, 2020 Jan 1, 2020 9:14:15 PM -   #4 (permalink)
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Default Re: Pretreatment timing

Quote:
Originally Posted by SHIMSTAR
Hi everyone,

Does anyone know if print production is effected if garments are pretreated beforehand. I had batch treated a bunch of t shirts and when I came to print on a few I noticed some white ink flaking going on. I hypothesised that maybe the t shirt had sealed a bit too much with the pretreatment and hence the inks are sitting on top of the seal rather than being absorbed in? I thought I'd batch treat to save the hassle of having both pretreatment and printer on at the same time and save time doing shutdown maintenance on two Machines. Also I noticed resolute sell pretreated garments.

Any clarity on this would be great.


Thanks

Shimon
Hi,

We used to sell the RTP brand which are very good. For reasons beyond our control the price to import shot through the roof making them close to £4.50 a shirt which is not commercially viable unless you are printing both sides and sleeves.

If circumstances change we will be the first to stock them again, you will see most DTG printer sellers using them at trade shows as they are very reliable and instant.

Regards

Colin
 
Old January 2nd, 2020 Jan 2, 2020 2:19:58 AM -   #5 (permalink)
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Default Re: Pretreatment timing

Hello there!

Perhaps I can suggest something;
After pretreatment, I used to box the t-shirts without a plastic bag (to avoid condensation) and store them outside the print room (to avoid the high humidity)

Before printing; 5 seconds heat press.
And... if by any chance the pretreatment is not quite working; I used to spray water on the printable area and then heat press the t-shirt for 5 seconds prior printing.

I would suggest testing different t-shirt brands over some period of time in order to fine-tune the process with the machinery and the conditions of your print room.

All the best!
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