July 20, 2015

What’s the difference between a cartridge of adhesive & a bottle?

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Many adhesives, particularly PU Adhesives, come in different forms. They are commonly seen in both a bottle & in a cartridge form.

We are often asked what the difference is between a bottle of adhesive & a cartridge.

The simple answer to this is that there is no difference in the end product but there might be a difference to what form the adhesive takes.

Our PU adhesive, Wood Weld comes in a cartridge & a bottle form. The main differences are are that:

  • In a bottle, the adhesive is a liquid
  • In the cartridge, the adhesive is a gel

What does this mean?

Although the end result is the same (the bond strength of the adhesive is identical), a gel doesn’t run in the same way that an adhesive liquid does. This has a number of advantages in terms of how it is applied.

For many applications, professionals prefer to use an adhesive gel in a cartridge as, because it doesn’t run, it is more controllable & easier to apply. Cartridges are placed into cartridge guns & the gel is applied smoothly & evenly, giving greater accuracy.

Gels main advantage come with cleaning up. There is generally less mess with a gel when compared to a liquid as it is easier to clean (as it doesn’t run) and as there is less mess when the adhesive is applied. In addition, it is easier to apply gels on vertical surfaces.

Why is the end result the same?

The result in bond strength is the same for both liquid & gels because a gel is essentially a liquid with some slightly different properties. By weight, gels are mostly liquid, yet they behave like solids due to a three-dimensional cross-linked network within the liquid. It is the crosslinking within the fluid that give a gel its structure (hardness) and contribute to the adhesive stick.

Gel or liquid, the adhesive properties of the material are not changed, just the texture of the material while it is being applied.

Filed under Adhesives, Blog by admin

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