Spectratek and laminate issues on HP 800w

[Pearlljelly]

Recently we switched over to an HP 800W but I've been having issues with some of the media. Spectratek Stardust comes out very "webbed" and our heat settings are on the lowest. Our over lam stickers are having troubles as well peeling up from the backer after the laminate process (we run lam cold). Here is a picture of the spectratek issue: View attachment 175183

 

[balstestrat]

Are you sure it's good to print on latex? It doesn't seem like it.

 

[BigNate]

... from way out in left field here... but did the media stretch or did the backer shrink? is it possible to cut a strip, flatten both and see? I run a 700w and have seen this. most of my printing is sheet fed these days... when we hit paper, (supposedly humidity stable to our shop paper), with the fuser of a toner press, the flash in temp drops the humidity of the sheet --- resting paper should be around 4% and post-fusing it is around 0.5%.... you can take a new sheet and an freshly printed sheet and see the printed is slightly smaller - (1/128" - 1/64" shrinkage on the 11" length....)...

I have often pondered if the heat in the curing area has a similar effect on the paper backers - leading to the trouble you see. I have notes to test which one deformed if/when it happens again on the 700w.

 

[Pearlljelly]

Are you sure it's good to print on latex? It doesn't seem like it.

We were told that it is able to be printed on latex printers but I think it is simply too hot for the material even at the lowest setting. Just wasn't sure if there was a work around anyone has come up with.

... from way out in left field here... but did the media stretch or did the backer shrink? is it possible to cut a strip, flatten both and see? I run a 700w and have seen this. most of my printing is sheet fed these days... when we hit paper, (supposedly humidity stable to our shop paper), with the fuser of a toner press, the flash in temp drops the humidity of the sheet --- resting paper should be around 4% and post-fusing it is around 0.5%.... you can take a new sheet and an freshly printed sheet and see the printed is slightly smaller - (1/128" - 1/64" shrinkage on the 11" length....)...

I have often pondered if the heat in the curing area has a similar effect on the paper backers - leading to the trouble you see. I have notes to test which one deformed if/when it happens again on the 700w.

That is a good idea to check out, I will compare the backer on a printed piece to an unprinted piece and take notes!