What is the advantage of using pressure sensitive adhesives on silicone sponge and silicone foam?
The main reason we supply silicone sponge and silicone foams with adhesive is to speed installation. Once the protective release liner is
removed the silicone gasket can be positioned in place to facilitate assembly. In addition, the adhesive and liner allow continuous die cutting so
products can be supplied on an easy to dispense roll thereby reducing the total installed cost.
What are standard pressure sensitive adhesives used on silicone sponge and silicone foam and how to they differ?
Silicone and acrylic adhesives are available on most silicone sponge and silicone foam products.
Silicone adhesive use temperature -100oF (73oC) +500oF (+260oC)
Acrylic adhesive use temperature -20oF (-29oC) +300oF (+149oC)
Besides temperature, what are some of the other differences between silicone and acrylic adhesives?
Acrylic adhesives provides a more aggressive bond to substrates, has a greater initial tack, has a 2 year minimum shelf life and is resistant to many
solvents. Silicone adhesives are best for high temperatures applications that require clean removal, UV (ultra violet light) resistance and plasticizer
migration. Silicone adhesives have a 6 month shelf life.
Silicone adhesives are hard adhesives, designed to withstand the higher temperatures and therefore do not have the higher tack levels and quick stick
characteristics like the acrylic adhesives.
Acrylic adhesives are softer than silicone adhesives have better tack and higher quick stick characteristics.