Types of Adhesives: Instant and Pressure Sensitive

by Andy on January 15, 2013

Loctite 49550 Instant AdhesiveToday’s article is the second in our Types of Adhesives series, now focusing on instant and pressure sensitive adhesives.

Instant adhesives are pretty straight forward and act as you would think from their name. These adhesives are used when you need short cure times to quickly bond two materials. To get a full cure you may need to wait up to 24 hours, but the fixture cure time can range from 90 seconds all the way down to 2 seconds depending on the material and adhesive. This allows you to affix two objects or materials quickly so that you can let them sit for a longer period by themselves for the full cure.

Pressure sensitive adhesives work in a very different way from instant adhesives. When using pressure sensitive adhesives you have to first apply it to one of the two surfaces that you want to join. Then you let the adhesive sit and it will start to become tacky and thicken. Once the adhesive dries and becomes tacky then you can press the second surface against the first, creating the bond. This makes pressure sensitive adhesives perfect for when you need to set up your adhesive to be assembled at a later point. Pressure sensitive adhesives also work on a wide variety of surfaces, giving you a wide range of use.

Join us again next week for our final segment on adhesives! Interested in learning about sealants? Check out last week’s blog post here for more information. Be sure to leave a comment below if you have any questions!

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