Weird issuse with Shur-locs

[cbjamel]

 >:(Has anybody seen this or know what causes it? I just had 6 of them do this!

Happy New Year!
Thanks,
Shane

[mk162]

are chems staying in the channel and softening the plastic?

[cbjamel]

>:(Has anybody seen this or know what causes it? I just had 6 of them do this!

Happy New Year!
Thanks,
Shane

Happened after coated and drying.

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[cbjamel]

Can too much heat do it??
Shane

[LoneWolf2]

Looks like too much heat from whatever is near them/blowing on them while drying.

[cbjamel]

Yea possibly. Thats what I am trying to determine.
Shane

[244]

are chems staying in the channel and softening the plastic?

Bingo. That is what is happening. We see it in the auto washers often. The chemicals attack and soften the glue.

[GKitson]

>:(Has anybody seen this or know what causes it? I just had 6 of them do this!

Happy New Year!
Thanks,
Shane

What kind of tension are you maintaining and is it possible the mesh was re-tensioned prior to the failure?

Are you using a heated dip tank for ink/emulsion removal?

Proximity of any heat source in mesh drying area?

Did you observe the failure or find it?

[jvanick]

I'm impressed with the lack of screen tape... if we did that here the panels would likely not even last 1 trip around the shop.

[cbjamel]

>:(Has anybody seen this or know what causes it? I just had 6 of them do this!

Happy New Year!
Thanks,
Shane

What kind of tension are you maintaining and is it possible the mesh was re-tensioned prior to the failure?

Are you using a heated dip tank for ink/emulsion removal?

Proximity of any heat source in mesh drying area?

Did you observe the failure or find it?

Greg, No retensioning, soak tank not heated. 1.5' from heater but the heat was directly on the bottom 6 screen then these 6 more that did this and 2 more on top that didn't. Std tensions.
Using ir and er satti chems.
Thanks,
Shane

[cbjamel]

I'm impressed with the lack of screen tape... if we did that here the panels would likely not even last 1 trip around the shop.

Ok I have got to ask when do you tape? I tape after coating and don't use protectors.

Shane

[GKitson]

Did they separate on the heated side?


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[cbjamel]

Did they separate on the heated side?


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Greg, yes but no in direct line of heat.
Shane

[jvanick]

I'm impressed with the lack of screen tape... if we did that here the panels would likely not even last 1 trip around the shop.

Ok I have got to ask when do you tape? I tape after coating and don't use protectors.

Shane

I put polyken tape on the screens when I stretch them (polyken is that white duct-tape type tape)... leave it on until the panel is ready to be replaced.  (no protectors here either, I tried a few of them at first and hated them, so we just tape).

depending on the job, we'll use split tape or masking tape on the inside of the frame, but more often than not, we don't tape after exposing the screens.

[cbjamel]

OK, were do you you put the poly tape so that you can coat?

Thanks,
Shane