For more than 40 years, if you were using can foam to air seal your project, you really only had two choices as to how to apply the air sealant. The first way would be for you to use a manual gun that you would load a 24 oz pressurize can onto and then you could apply a bead to fill cracks or joints. Your other option would be to use a Foam Kit that would provide a plastic foam gun and with that system you would be able to apply the foam in a spray pattern. Even then, you would need to interchange nozzles onto the gun so that you could get the right type of pattern that you were needing.
This is why we created the Spray Pods Gun, so that you could get your air sealing project done faster. The Spray Pods Gun uses compressed air to provide a spray pattern for both 24oz and 29oz polyurethane can foam and spray adhesive chemistries. This means that the only restriction that you have in operating the Spray Pods Gun is the length of your air hose. Also, because the gun is all metal, it is very durable and if purged with cleaner after each project, it can last a long time. Finally, because of the patent pending design, the Spray Pods Gun applies a higher yield foam per can which means that it’s more economical than just using typical manual gun.
Adhesion is the bond strength measurement of a coating to a substrate. When an adhesive is bonded to an item or surface, numerous physical, mechanical and chemical forces come into play, which may have an effect on each other. These need to be tested before a product can be used. One of the primary features of closed cell polyurethane chemistry is the adhesion strength on almost any substrate.
Determination of the failure point can be critical for the final use of the material and the adhesive. There are a large number of different adhesive products, which require different testing methods to characterise the properties of the material. Some examples include substrates, glue, creams, gels, paints and varnishes and bonding of different materials together in layers, which all require a different adhesive test, some times called pull testing. We decided to test the Dry Wall Adhesive and the Black Can Foam to show you how strong these polyurethane foam sealants are.
Determination of the failure point can be critical for the final use of the materials, depending on the final product they have been designed for. Tests can also be done at different temperatures to simulate real world use for the materials. Material characteristics can change at high or low temperatures due to expansion and contraction. Hopefully this Spray Sealants Blog post can help you to determine which sealants you should choose when considering your next air sealing project.