The Only Choice is “DRY GUY”

(A chemical explanation of the “ Dry Guys” superior advantages)

Hydrophobicity: noun: the property of being water-repellent; tending to repel and not absorb water. There are several methods which can be used to make surfaces hydrophobic (water proof):

1) LEAST BREATHABILITY:

The most common method to waterproof fabric, and the most cost effective for manufacturers, is to apply successive layers of an impermeable (water-repellent) coating until sufficient thickness is achieved that water cannot work its way into the surface (fabric). While this can be highly effective, it comes at the price of significantly reducing the migration of water vapour. This can be especially critical if there is a source of water vapour on the untreated side as temperature differentials can lead to a dew point effect within or on the substrate (fabric). This can lead to mildew or frost issues depending on whether one or both sides of the fabric are either warm or cold.

2) LESS BREATHABILITY:

The second most cost effective technique for manufacturers for making surfaces (fabrics) hydrophobic (water-repellent) is to apply a selectively permeable (waterproof) coating. Such materials are intended to have sufficiently small pore structures that liquid water cannot enter, but water vapour can pass through. While such an approach is certainly an improvement over the impermeable (water-repellent) coating as in example (1) , it still does hamper the ease of water molecules to directly transpire through the treated fabric surface. Some obstruction will occur and liquid water will eventually accumulate. Surface tension: noun: a property of liquids arising from unbalanced molecular cohesive forces at or near the surface, as a result of which the surface tends to contract and has properties resembling those of a stretched elastic membrane.

3) MAXIMUM BREATHABILITY:

The DRY GUY’s proprietary formula is the most effective technique for imparting hydrophobicity (water-repellency) to a porous surface (fabric) to alter the surface (fabric) tension properties. If the solid fabric surface has been impregnated with a material which interacts with the surface matrix so as to lower its surface energy, when liquid water comes in contact with such a fabric surface, it has a tendency to pull itself into water droplets (since the water molecules are more attracted to themselves than to the molecules which make up the treated surface). Once these water droplets form, they tend to simply run off the treated fabric surface rather than wet into the surface. One significant advantage of this proprietary formula is that water vapour can easily migrate through the pore structure of the treated fabric surface, essentially unimpeded.