Differences between Acrylic and rubber-based adhesives?

At my place of work, we use white velcro with a rubber-based adhesive on the back. We want to carry black velcro with this same adhesive, but the Black velcro only comes from our supplier in an acrylic-based adhesive.





Would there be any noticeable differences between the two?





We use the adhesive side on leather and plastic for the most part.Differences between Acrylic and rubber-based adhesives?
you would need to test the adhesive, on the products that you will apply them to. acrylic is a resin and water based adhesive ...it might become slimy and slide on plastics....


contact 3m.. their techs have done research on this subject....Differences between Acrylic and rubber-based adhesives?
I expect that the rubber based adhesive might bond better to plastics while the acrylic will be better on leather, but that is just a guess.


I guess you don't know that ';plastic'; could mean kevlar, styrofoam or saran wrap and that the properties are totally different between them?


I expect that acrylic will have better oxidation / weathering / aging / temperature discoloration resistance, too. And should remain more flexible at low temperatures.


The rubber based adhesive (hot melt?) may have better creep resistance. And should be lower cost.


So. you need to test them for creep, especially at your product's upper temperature limit.


And you need to check adhesion on the ';plastics'; you bond to. Be sure to use the same cleaning (or non-cleaning) methods you use in the factory since surface clenliness will influence results.


Both creep and adhesion can be checked by putting a weight on the one side of the velcro and seeing if there is a huge difference in which adhesive can carry:


1. more weight (for adhesive strength)


2. a weight for longer time (for creep at elevated temperature)


You can use 10%, 50% or 90% of the weight that the bond fails at in 1 for the load on 2. I'd use the same weight for both the acrylic and the rubber loads in 2 and 50% of the rubber's failure load (if thats pretty aggressive).


If the failure load is way more than what forces you know the strap must handle --- {Q: you and I are in the woods and suddenly a grizzly bear starts chasing us. How fast do I have to run to get away from the bear? A: just a bit faster than you ;p } since I expect the velcro will be the weakest link all the adhesive has to do is be stronger by a safe margin and not creep again when loaded with a litle bit extra. What's a safe margin? It all depends. for real world (rather than green house applications) I'd use a factor of 3x. But it could be as low as 1.5X or as high as 10X depending on the consequences of failure.


HTH


BTW, acrylic pressure sensitive IS rubber (probably - - unless its reactive) but you meant a synthetic or natural hydrocarbon rubber I assume. doesn't matter.


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Sophie is correct a good tech service call should answer some of your questions. Your vendor may need to call his/her adhesive vendors but just ask for the creep resistance of each adhesive, adhesion to leather (this isn't straighforward since most leather is coated) and adhesion to the ';plastics'; you bond to. Peel adhesion is better than shear adhesion, but getting both would be best.