Peel/Adhesion testing

Make a jig to mount your label in a consistent manner.Attach weights by means of a clip or an attachment which can be glued to the label in a repeatable manner. Slowly increase the weight until peel starts. Record results...do the stats...have a coffee..write a lengthy report...get promoted...etc

Del Gato, yu are killing me over here!

Thanks, thats a pretty good idea actually.

Del's right the simple solutions are the best. But if you tell anyone how you did it you'll never get promoted.

Yeh Davah! Soooooooooo right, your Boss will take the credit for delegating so cleverly !

Yah! Forgot to add 'What goes 'round comes'round'.

What is your budget?

My budget is a little less than 1000 USD. A few slabs of aluminum plating is probably good enough. Some pulleys and rollers and Im set. I already have 2 slabs of aluminum that I purchased for a project that apparently already had enough materials.

I work for Com-Ten; by the time you add up the EZ test stand, Digital Force Meter and clamps, you will go over budget (approximate cost will be $1900). You may want to consider just buying the digital force meter, and physically applying the force. My name is David, and I would be happy to help you find a low cost solution; please call me at 800-552-5546

Thanks, I just talked to my supervisor and he gave me a list of tests he wants conducted, among them, some speed tests that will require a linear translation motor/stage.

Also, thanks David, I will call you if there is anything more I need.

Speed test? Please elucidate!

How quickly you can be ripped off man!

Basically, the test is to see the adhesion of the label at a certain rate of jaw seperation. In my case, its 300 mm/minute. The only way to do that is to have some kind of linear translation stage. But it would be simpler if the jaws themselves were able to seperate at that speed. There's also an angle of attack when the label is being peeled, which are 180 and 90 degrees. I cant see how I could build something like that without purchasing a linear stage or something that would move the jaws at that speed.

The speed thing sounds like a BWFT to me. 300mm an minute ...? you are having a laugh? At those slow speed I'd bet it won't make any difference...

OK...there will be some difference between a 'snatch' and a s l o w peel...

(I reserve the right to be wrong here, but I'd willingly bet a pint...I can think of vastly better ways to spend the budget!)

The angle of attack thing is sensible.

Jeez are these labels for the space shuttle (or medical) or something special?...this is begining to sound like QA gone mad!

No , these are FINAT tests, haha. I think I can just get a hand cranked stage and place a motor on it. Using a ruler, I can just let the motor run and the digital gauge make the readings till the label peels off.

For your information, these are packaging labels, although Im sure NASA has million dollar equipment to test a bottle label.

FINAT... looked it up...whatever...

I'd still love to see a graph of peel force vs speed....

They have no interest in selling you expensive and irrelevant test gear I s'pose?

A little cynicism can save a lot of money. (Doubtless it won't end up in your pocket though!... Mine neither)

If you find that graph..pls post it ..It would be interesting, I'm not just a mouthy cynical old git...I am actually interested in learning too!

Have fun

Del

Maybe a phone call to 3M would save some time.

Take a look at the Pressure Sentive Tape Council web site where there is information on specific test methods for pressure sensitive tape (PSA) and the various devices to perform the tests. The test methods conform to both PSTC standards as well as ASTM.

www.pstc.org

Hi. i am amalan from india. Hang 1" label with a std. wt.(i can decide yourself). The time taken for the label to fail is the adhesive strength. It is comparative study only. You can compare with std. value.