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Heat Seal - Heat Press - Whatever you want to call it! => General Heat Seal => Topic started by: printguy on December 15, 2016, 11:28:26 AM

Title: Adherence Problem
Post by: printguy on December 15, 2016, 11:28:26 AM
Heat presses a slew of nylon jackets using Siser Easyweed vinyl - left chest. Most had no issues adhering to the jackets, however some lost adhesion & peeled off. Need to know if there is something else that needs to be done that will help with adhesion. Possibly time, temperature or pressure needs to be adjusted or possibly defective vinyl material? Thoughts, please.
Title: Re: Adherence Problem
Post by: aauusa on December 15, 2016, 11:42:03 AM
you may have a coating on the jackets which is the cause.  I would wipe the jacket with some letter off or something similar the do the vinyl.
Title: Re: Adherence Problem
Post by: Frog on December 15, 2016, 11:49:51 AM
Regular Easyweed? Nylon requires their Easyweed Extra.
Title: Re: Adherence Problem
Post by: mimosatexas on December 15, 2016, 12:11:57 PM
like frog said, need to use a nylon specific vinyl.  Easyweed Extra is one, but there are a handful of other options as well.  Most of the brands have one specific to nylon.
Title: Re: Adherence Problem
Post by: cleveprint on December 15, 2016, 12:22:29 PM
gorilla grip from stahls. i do not think it will ever come off of anything. we have one customer who comes back once or twice a year to get a few jackets for new employees. his jacket has to be 6-7 years old and its beat to crap, but the lettering on the back is still perfect.
Title: Re: Adherence Problem
Post by: larryk on December 15, 2016, 05:14:39 PM
Ran into that problem a few years back and found out the jackets had a coating on them... one swipe from a rag with acetone on it removed the coating. Be very carefull with the acetone should you use it as it is extremely flamable..... and too much can melt the nylon as well.
Title: Re: Adherence Problem
Post by: mk162 on December 16, 2016, 09:44:58 AM
You can also use rubbing alcohol.  I prefer the 91 or 94%, whatever is the highest at the store.  Works just as well.
Title: Re: Adherence Problem
Post by: T Shirt Farmer on December 16, 2016, 09:54:32 AM
gorilla grip from stahls. i do not think it will ever come off of anything. we have one customer who comes back once or twice a year to get a few jackets for new employees. his jacket has to be 6-7 years old and its beat to crap, but the lettering on the back is still perfect.

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