Maybe this will help Steve. :lol:
"How Velcro Fastens"
The technology behind Velcro is essentially the same that is used by many plants in the spread of their seeds. Some plant seeds are encased in shells with hook like burrs, or spines that can cling to animal fur or clothing. Velcro works by joining two panels of material, one with a surface of fairly rigid plastic hooks, and one with as surface of thinner wispy loops of plastic that the hooks will cling to when the panels are pressed up against reach other. When the panels are pressed together, the Velcro will hold in place fairly firmly, unless the panels are pealed back from one another. This allows for quick and secure fastening and release. Velcro is commonly used for children's shoes, who may not know how to tie them, and as straps on various devices such as backpacks, life vests, luggage, and joint braces. Hook and loop fasteners have evolved into a fairly ubiquitous technology."
Bob
Read more :
http://www.ehow.com/how-does_4689227_velcro-work.html