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Tuesday, July 8, 2014

All About Adhesives Tutorial Series - Wet Adhesives Final

Rounding out the end of wet adhesives, there's one more thing I wanted to add...a bit of technical stuff, but I'm sure you can handle it. I love knowing all the ins and outs of a product...how it works and why it works the way it does.

 

All-Purpose Craft Glues/Tacky GluesGlues in this category are easy to clean and dry clear. They are suitable for use on lightweight material such as paper, leather, and some types of wood. 


Things to consider when using craft glues:
a)  Water content - Some glues tend to warp the paper due to the amount of water in the glue, so it’s best to always test glue on a scrap paper to see how it will react in your project.
b)  Discoloration - Some white glues can easily discolor decorative papers and tissues…not a good thing for collages and paper arts.
c)   pH -  Remember that from Chemistry class?  pH measures the acidity or basicity of a solution. The lower the pH, the more acidic the solution is. The higher the pH, the more basic the solution is.


Why is this important?
Acid can migrate from adhesives, paper, art supplies, and memorabilia, causing the papers in your project to eventually darken and become brittle. Not a big deal if you are creating kids crafts, but definitely something to think about if you are a scrapbooker or want to prepare a project that needs to be archival. 

To find out pH and other important safety info about a product, locate the MDSD (Material Safety Data Sheet) for the product on the company website. It is important to use the MDSD specific to both country and supplier, as the same product (e.g. paints sold under identical brand names by the same company) can have different formulations in different countries.

OK, all that was pretty technical….I think we’re done now!

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