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Re: heat vinyl query - problem and supplier request

Posted: 28 Dec 2017, 23:05
by TQfan
Hi

I have been buying heat vinyl from Sign Making and Supplies. I have been buying their polyflex vinyl. Previously bought yellow and white, then purchased black (all 50cm rolls) and a few A4 sheets of red/royal blue/orange as I did not need a lot of those colours at present.

The yellow worked fine once I got going, haven't used the white yet, but the issue started when I used the black. I had black text, with some red, blue, and orange, and even a bit of layering, everything worked fine except for a small corner - the Y on mummy in the first, and the corner above the S in the second (as you will see from the photos). I then pressed another item in completely black, and again an issue with one corner. The opposite corner from before. No matter how often I pressed it, it just would not stick. Got to the point where I singed one item :rolleyes::biggrin:
vB_ID:4978
vB_ID:4978
vinylissues.jpg (16.41 KiB) Viewed 30 times
vB_ID:4978
vB_ID:4978
vinylissues.jpg (16.41 KiB) Viewed 30 times
Anyone have any ideas what would cause this?? The seller said he'd never had this before and was going to press some items to check. Not heard back... Just seems weird that it was only the black that had the issue and on a small part!!

This is the vinyl here

Anyone else have any other suppliers??

thanks :smile:

Re: heat vinyl query - problem and supplier request

Posted: 28 Dec 2017, 23:26
by webtrekker
Any more information, eg. press make, temp, time, material?

Re: heat vinyl query - problem and supplier request

Posted: 28 Dec 2017, 23:44
by TQfan
putting the vinyl onto those baby vests, think they are pure cotton.
here is the vinyl info taken from the site. i use a pix max press.
vB_ID:4980
vB_ID:4980
wm-poly-flex.jpg (92.84 KiB) Viewed 30 times

Re: heat vinyl query - problem and supplier request

Posted: 29 Dec 2017, 00:03
by webtrekker
Have you tried a lower temperature and cold peel, as per this video?...

Re: heat vinyl query - problem and supplier request

Posted: 29 Dec 2017, 09:42
by John G
Were both failures quite near a seam, or close to the edge of your heat plate?
It looks like a pressure issue (due to being close to a seam) on the "Straight outta" image.
Cheers John

Re: heat vinyl query - problem and supplier request

Posted: 29 Dec 2017, 16:29
by TQfan
webtrekker;128873 wrote:Have you tried a lower temperature and cold peel, as per this video?...
didn't think you could do cold peel, since it said it was hot peel. i'll check the video!

Re: heat vinyl query - problem and supplier request

Posted: 29 Dec 2017, 16:36
by TQfan
John G;128880 wrote:Were both failures quite near a seam, or close to the edge of your heat plate?
It looks like a pressure issue (due to being close to a seam) on the "Straight outta" image.
Cheers John
you know what, that makes sense. the corners are near seams. they were in the middle of the heat plate, cos quite small items (either newborn baby or 0-3 months).
i have another pad so i can put it inside garments just never thought to do it on this small item!!
i have a couple more baby vests, i will redo the straight outta mummy one, as the other i redid the y already. it was for my sister and other half to announce their pregnancy!
thanks!!

Re: heat vinyl query - problem and supplier request

Posted: 30 Dec 2017, 17:11
by pw66
I have had similar problems with a batch of red hot peel from MDP Supplies. Wouldn't stick properly and hard to remove backing no matter what press settings I used. They had never heard of the problem before either...

Subsequent batches have been fine. I just put it down to a faulty batch.

Re: heat vinyl query - problem and supplier request

Posted: 31 Dec 2017, 12:29
by theoriginalmadco
It may well be that the fact the bits that weren't sticking were by seams that there wasn't enough contact with the press and vinyl. Try a folded teflon sheet under the y to raise it to the height of or just over the seam.

Alternatively try with an iron (at correct temp and with lots of pressure as opposed to movement) which isn't affected by the seam in terms of contact. If it seals fine u know the issue was the seam affecting contact rather than the vinyl. If neither option works it's likely a dodgy batch. X

Sent from my SM-G930F using Tapatalk

Re: heat vinyl query - problem and supplier request

Posted: 01 Jan 2018, 10:07
by Fletcher
Hi, I had the same problem, so I stuck mouse mats under the printed area and it was fine. You will probably find its due to the seams. Other option would to be try more pressure.