The strip probably does have some sort of adhesive already on it that would be activated by heat. The problem is that those strips are made of something called "post form" laminate, which means that it's very thin so that it can be heated and bent and glued to a particle board counter top by companies that make custom counter tops to order. Every city has several places that will make a counter top for you out of post form laminate.
Regular laminate is thicker and stronger and isn't meant to be glued to a curved surface.
What is being suggesting is to glue regular laminate to finish your exposed edge because it's stronger. If you can get a piece of regular laminate to match your top, great. Otherwise it's not a big deal if it doesn't match.
When I do this, I:
0. If you have a hole in that counter top for a sink, paint the exposed particle board around that hole with an oil based paint or boiled linseed oil. Also, paint the underside of the top around that hole for a good 6 inches. Ditto if you've cut holes for a faucet. The oil based paint will prevent the exposed particle board from absorbing moisture if there's a leak, and that will protect the top from damage until you discover and repair the leak.
1. cut the top about 1/4 inch wider than the cabinet
2. glue the laminate to the edge of the top (I've done this about 40 times in 20 kitchens in my apartment block and all of them were done with LePage's water based contact cement and I haven't had any problem. Other people post that the only time they've had a problem is when using water based contact cement. Go figure. It just goes to show how everyone's advice can be different because we've all had different experiences.
3. Trim the laminate edge you've glued on. And this can be done different ways. I have an edging accessory that allows me to trim the laminate with a V shaped bit so that I can trim the laminate so close I don't need to do very much filing. If this is your first time, I'd suggest you use a bearing piloted bit in a laminate trimmer which will allow you to cut that side piece so that it only sticks out about 1/32 of an inch from the counter top, and file it down the rest of the way with an ordinary file held at a 45 degree angle. Use the file so as to push the side piece onto the edge of the top, not to pull the side piece off the edge of the top.
4. Once your side edge is filed down, slide your laminate top onto the cabinet and secure it in place. I use something called "flanged insert nuts" available from Lee Valley to hold my laminate counter tops down to my existing square edge plywood tops. But, if you don't have an existing plywood top, you'll have to use a different method to fasten your top down to the cabinet.
5. Finally, squeeze some caulking in between the laminated edge of the top (which sticks out about 1/4 inch over the side of your cabinet) and the side of the cabinet so that if it receives a bump, the laminate is supported and doesn't break. I've always used silicone for this, but a caulk that cures harder would probably support the laminate better and be a better choice. If I had to do it again, I'd probably use PL Premium construction adhesive, which would cure to a strong and shock resistant backer material for the laminate.
But, as I say, we're all giving you different advice because we've all had success doing it different ways.