There are different products that fit that description. Searching for tubular bandage or tubular dressing will turn up a number of them, so those are two reasonably generic terms that you could use. Some examples of specific products are:
These all fit the "netting" part of your description, but I'm not sure that their primary purpose is to hold the edges of wounds together; (I'm not a doctor, but...) they seem to be used more to hold other dressing components in place. From personal experience as a patient, products used to hold skin together tend to be more adhesive or mechanical, such as butterflies, Steri-strips, glue, sutures, and staples. None of these bear much resemblance to netting, so I don't think they're what you're looking for.